Page last updated: 2024-11-05

vasotocin

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Description

Vasotocin: A nonapeptide that contains the ring of OXYTOCIN and the side chain of ARG-VASOPRESSIN with the latter determining the specific recognition of hormone receptors. Vasotocin is the non-mammalian vasopressin-like hormone or antidiuretic hormone regulating water and salt metabolism. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

vasotocin : A heterodetic cyclic peptide that is homologous to oxytocin and vasopressin. It is a pituitary hormone that acts as an endocrine regulator for water balance, osmotic homoeostasis and is involved in social and sexual behavior in non-mammalian vertebrates. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Cross-References

ID SourceID
PubMed CID24774
SCHEMBL ID15511347
MeSH IDM0022564

Synonyms (12)

Synonym
vasotocin
vasopressin, isoleucyl
3-isoleucyl vasopressin
vasopressin, non-mammalian
arginine oxytocin
9034-50-8
1-[19-amino-7-(2-amino-2-oxoethyl)-10-(3-amino-3-oxopropyl)-13-butan-2-yl-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]-n-[1-[(2-amino-2-oxoethyl)amino]-5-(diaminomethylideneamino)-1-oxopentan-2
[arg8]-vasotocin
vasopressin acetate
SCHEMBL15511347
cys-tyr-ile-gln-asn-cys-pro-arg-gly-nh2 acetate salt
vasotocin; dl-cysteinyl-dl-tyrosyl-dl-isoleucyl-dl-glutaminyl-dl-asparagyl-dl-cysteinyl-dl-prolyl-dl-arginyl-glycinamide (1->6)-disulfide

Research Excerpts

Overview

Vasotocin is a basic neurohypophysial nonapeptide in non-mammalian vertebrates. It is involved in diverse functions like osmoregulation, reproduction, metabolism and behavior.

ExcerptReferenceRelevance
"Vasotocin (VT) is a basic neurohypophysial nonapeptide in non-mammalian vertebrates and is involved in diverse functions like osmoregulation, reproduction, metabolism and behavior. "( Estrogen regulation of brain vasotocin secretion in the catfish Heteropneustes fossilis: an interaction with catecholaminergic system.
Chaube, R; Joy, KP; Singh, RK, 2012
)
2.11

Effects

Vasotocin (VT) has been shown to influence various aspects of social and sexual behaviors in a broad range of vertebrate species. Less is known about the mechanisms through which this peptide modulates behavior.

ExcerptReferenceRelevance
"Vasotocin (VT) has been shown to influence various aspects of social and sexual behaviors in a broad range of vertebrate species, but less is known about the mechanisms through which this peptide modulates behavior. "( Structure of neurohypophysial hormone genes and changes in the levels of expression during spawning season in grass puffer (Takifugu niphobles).
Ando, H; Hamabata, T; Motohashi, E, 2008
)
1.79
"Vasotocin and mesotocin have been identified by their biological activities and their retention times compared with those of synthetic peptides."( Isolation of neurosecretory granules containing vasotocin, mesotocin, MSEL- and VLDV-neurophysins from goose neurohypophysis.
Acher, R; Chauvet, J; Chauvet, MT; Lévy, B; Rouillé, Y, 1989
)
1.25

Actions

Vasotocin (AVT) promotes courtship in a wide range of vertebrates. It also plays an important role and enhances specific types of behaviors in amphibians.

ExcerptReferenceRelevance
"(4) Vasotocin also plays an important role and enhances specific types of behaviors in amphibians (frog calling, receptivity in female frogs, amplectic clasping in newts, and non-clasping courtship behaviors)."( Historical perspective: Hormonal regulation of behaviors in amphibians.
Boyd, SK; Kelley, DB; Moore, FL, 2005
)
0.81
"Vasotocin (AVT) promotes courtship in a wide range of vertebrates. "( Behavioral and hormonal effects of exogenous vasotocin and corticosterone in the green treefrog.
Burmeister, S; Somes, C; Wilczynski, W, 2001
)
2.01

Treatment

ExcerptReferenceRelevance
"Vasotocin treatment increased adenylate cyclase activity in glomeruli and in collecting ducts and did not modify it in proximal convoluted tubules and in early and late distal tubules."( Vasotocin-sensitive adenylate cyclase in frog glomeruli.
Ammar, A; Butlen, D; Roseau, S, 1995
)
2.46

Toxicity

ExcerptReferenceRelevance
" In addition, intravenous therapy was terminated more frequently as a result of maternal adverse events in the ritodrine group (29."( Double-blind, randomized, controlled trial of atosiban and ritodrine in the treatment of preterm labor: a multicenter effectiveness and safety study.
Boucher, M; Cohen, H; Dansereau, J; Fejgin, M; Glezerman, M; Hochner-Celnikier, D; Liston, RM; Mazor, M; Mohide, PT; Moutquin, JM; Rabinovici, J; Shalev, E; Sherman, D; Zimmer, EZ, 2000
)
0.31
"Atosiban was comparable in clinical effectiveness to conventional ritodrine therapy but was better tolerated than ritodrine, with no evidence of significant maternal or fetal adverse events."( Double-blind, randomized, controlled trial of atosiban and ritodrine in the treatment of preterm labor: a multicenter effectiveness and safety study.
Boucher, M; Cohen, H; Dansereau, J; Fejgin, M; Glezerman, M; Hochner-Celnikier, D; Liston, RM; Mazor, M; Mohide, PT; Moutquin, JM; Rabinovici, J; Shalev, E; Sherman, D; Zimmer, EZ, 2000
)
0.31
" Maternal side effects, particularly cardiovascular adverse events (8."( Effectiveness and safety of the oxytocin antagonist atosiban versus beta-adrenergic agonists in the treatment of preterm labour. The Worldwide Atosiban versus Beta-agonists Study Group.
, 2001
)
0.31
" We aimed to compare side effect profiles of beta2-agonist tocolytics."( Pragmatic comparison of beta2-agonist side effects within the Worldwide Atosiban versus Beta Agonists study.
Cabrol, D; Chan, J; Fisk, NM; Ingemarsson, I; Marsal, K; Moutquin, JM,
)
0.13
" Safety was assessed as the numbers of maternal adverse events and neonatal morbidity."( Multicentre, parallel group, randomised, single-blind study of the safety and efficacy of atosiban versus ritodrine in the treatment of acute preterm labour in Korean women.
Cho, YK; Kim, A; Lee, Y; Park, YW; Shim, JY; Yang, JH; Yoon, BH, 2006
)
0.33
" Maternal adverse events related to therapy were reported less frequently in the atosiban group (7."( Multicentre, parallel group, randomised, single-blind study of the safety and efficacy of atosiban versus ritodrine in the treatment of acute preterm labour in Korean women.
Cho, YK; Kim, A; Lee, Y; Park, YW; Shim, JY; Yang, JH; Yoon, BH, 2006
)
0.33
" Some women treated with tocolytics will experience adverse events, and some adverse events are particularly associated with different classes of tocolytic agents."( 'Normal' pregnancy with adverse events on initial tocolytic treatment.
Dudenhausen, J, 2006
)
0.33
" Tocolysis was terminated as a result of maternal adverse effects in the fenoterol group (9%)."( [Effectiveness and safety of atosiban vs. pulsatile administration of fenoterol in the treatment of preterm labour].
Dudenhausen, J; Hopp, H; Nonnenmacher, A, 2009
)
0.35
"The adverse effects in the pulsatile administration of fenoterol for short duration were only dependent on the initial dosage for the arrest of preterm labour."( [Effectiveness and safety of atosiban vs. pulsatile administration of fenoterol in the treatment of preterm labour].
Dudenhausen, J; Hopp, H; Nonnenmacher, A, 2009
)
0.35
"Atosiban was comparable in clinical effectiveness and was associated with fewer maternal and fetal adverse effects, so that fenoterol cannot be recommended."( [Effectiveness and safety of atosiban vs. pulsatile administration of fenoterol in the treatment of preterm labour].
Dudenhausen, J; Hopp, H; Nonnenmacher, A, 2009
)
0.35
"Following a systematic review of the literature, we have provided an overview of the use of tocolytics for the prevention of preterm birth and have examined the fetal and maternal adverse effects of the various tocolytic agents currently in use."( The safety of tocolytics used for the inhibition of preterm labour.
Jørgensen, JS; Lamont, CD; Lamont, RF, 2016
)
0.43
" β2-agonists are relatively safe for the fetus but have rare and potentially serious maternal adverse effects."( The safety of tocolytics used for the inhibition of preterm labour.
Jørgensen, JS; Lamont, CD; Lamont, RF, 2016
)
0.43
" Our results demonstrated that the cardioprotective effects of OT are mediated by NO release, and the activation of mitoKATP and the SAFE pathway through the JAK/STAT3 signaling cascade that finally lead to decrease in the apoptosis index during the early reperfusion phase."( The SAFE pathway is involved in the postconditioning mechanism of oxytocin in isolated rat heart.
Alizadeh, AM; Farnoosh, G; Ghayour-Mobarhan, M; Jamialahmadi, K; Jand, Y; Khori, V; Polshekan, M; Rajaei, M; Saeidi, M, 2019
)
0.51

Pharmacokinetics

ExcerptReferenceRelevance
"099 (SEM) l/h kg and the half-life to 16."( Pharmacokinetics in the human of a new synthetic vasopressin and oxytocin uterine antagonist.
Akerlund, M; Fagerström, PO; Hauksson, A; Lundin, S; Melin, P, 1986
)
0.27
" After the completion of the infusion, plasma concentrations declined rapidly in a biexponential manner with initial and terminal half-life estimates of 13 +/- 3 and 102 +/- 18 minutes, respectively."( The pharmacokinetics of the oxytocin antagonist atosiban in pregnant women with preterm uterine contractions.
Abrams, LS; Goodwin, TM; Holland, ML; Millar, L; North, L; Weglein, RC, 1995
)
0.29
"8 l and the biological half-life was 39."( Pharmacokinetic properties of the tocolytic agent [Mpa1, D-Tyr(Et)2, Thr4, Orn8]-oxytocin (antocin) in healthy volunteers.
Broeders, A; Lundin, S; Melin, P, 1993
)
0.29
"The half-life was longer and the clearance of antocin was less than that found in a previous study when a non-specific antiserum was used."( Pharmacokinetic properties of the tocolytic agent [Mpa1, D-Tyr(Et)2, Thr4, Orn8]-oxytocin (antocin) in healthy volunteers.
Broeders, A; Lundin, S; Melin, P, 1993
)
0.29
"In two separate trials, we studied the concomitant administration of atosiban with labetalol and betamethasone to determine any possibility of a clinically relevant pharmacokinetic interaction."( Pharmacokinetic interaction studies of atosiban with labetalol or betamethasone in healthy female volunteers.
Larsen, LS; Rasmussen, BB; Senderovitz, T, 2005
)
0.33
" Study 2 was an open-label, randomised, three-period crossover pharmacokinetic study."( Pharmacokinetic interaction studies of atosiban with labetalol or betamethasone in healthy female volunteers.
Larsen, LS; Rasmussen, BB; Senderovitz, T, 2005
)
0.33
" Pharmacokinetic parameters (AUC, C(max), t(max)) did not differ markedly between treatments and all 90% CIs for ratios between treatments were fully within limits (80-125%)."( Pharmacokinetic interaction studies of atosiban with labetalol or betamethasone in healthy female volunteers.
Larsen, LS; Rasmussen, BB; Senderovitz, T, 2005
)
0.33

Compound-Compound Interactions

ExcerptReferenceRelevance
" Rofecoxib combined with ritodrine had a synergic effect."( In vitro study of tocolytic effect of rofecoxib, a specific cyclo-oxygenase 2 inhibitor. Comparison and combination with other tocolytic agents.
Benchaib, M; Doret, M; Gharib, C; Mellier, G; Pasquier, JC; Piacenza, JM, 2002
)
0.31
" Patients were divided into a research group receiving ritodrine combined with atosiban, owing to having no response to ritodrine alone (n=30), and a control group receiving ritodrine alone (n=22)."( Atosiban Combined with Ritodrine for Late Threatened Abortion or Threatened Premature Labor Patients with No Response to Ritodrine: A Clinical Trial.
Chen, H; Fu, S; Liu, Y; Mo, H; Tan, J; Xie, H; Xu, Q; Zhang, J; Zhong, Y; Zhu, L, 2021
)
0.62

Bioavailability

ExcerptReferenceRelevance
" After intranasal administration (100 nmol/kg/body weight), the bioavailability was 10."( Pharmacokinetics in the human of a new synthetic vasopressin and oxytocin uterine antagonist.
Akerlund, M; Fagerström, PO; Hauksson, A; Lundin, S; Melin, P, 1986
)
0.27
"Labetalol had no clinically relevant influence on the bioavailability (AUC) of atosiban."( Pharmacokinetic interaction studies of atosiban with labetalol or betamethasone in healthy female volunteers.
Larsen, LS; Rasmussen, BB; Senderovitz, T, 2005
)
0.33
"The co-administration of atosiban with betamethasone or labetalol had no clinically relevant influence on their bioavailability or tolerability."( Pharmacokinetic interaction studies of atosiban with labetalol or betamethasone in healthy female volunteers.
Larsen, LS; Rasmussen, BB; Senderovitz, T, 2005
)
0.33

Dosage Studied

Dose-response curves for each peptide showed that the augmentation of rate of fluid uptake did not differ in the absence or in the presence of NaCl. In ovo administration of high dose CORT significantly suppressed the growth rate from 3weeks of age and increased the frequency of aggressive behaviors.

ExcerptRelevanceReference
" dose-response curve is satisfactory."( [In vitro effect of vasotocin on the ventral aorta of freshwater eels].
Holder, FC, 1976
)
0.58
" Administration of 5-hydroxytryptophol or 5-methoxytryptamine at the same dosage inhibited ovarian but not uterine hypertrophy in mice pre-treated with HCG."( Inhibition of human chorionic gonadotrophin-induced hypertrophy of the ovaries and uterus in immature mice by some pineal indoles, 6-hydroxymelatonin and arginine vasotocin.
Reiter, RJ; Vaughan, GM; Vaughan, MK, 1976
)
0.45
" The slopes of the dose-response curves relating AVT to cutaneous water influx were about the same at the transition from the breeding to the nonbreeding state, but the level of influx was higher in the breeding state."( Effect of breeding state, moulting, dehydration, exposure to saturated atmosphere, and arginine vasotocin on cutaneous water permeability in the toad Bufo bufo.
Jørgensen, CB, 1992
)
0.5
" The strength of these contractions was related to the dosage of AVT and reduced by pretreatment in vivo with both progesterone and estradiol-17 beta."( In vitro uterine contractions in the viviparous lizard Tiliqua rugosa: effects of gestation and steroid pretreatment in vivo.
Bradshaw, SD; Fergusson, B, 1992
)
0.28
" Cumulative dose-response curves were generated for KCl (5-100 mM), NE (10(-10)-10(-5) M), AVP, and AVT (both 10(-10)-10(-6) M) in the presence and absence of a selective V1 vasopressinergic inhibitor, [1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid), 2-(O-methyl)tyrosine]arginine vasopressin ([d(CH2)5Tyr(Me)]AVP)."( Ontogeny of vasoconstrictor neurohypophysial hormone function in rats.
Balaraman, V; Claybaugh, JR; Ichimura, WM; Kullama, LK; Nakamura, KT, 1990
)
0.28
"In a previous study, a high dosage (2."( Induction of oviposition in cycling Anolis carolinensis requires a beta-adrenoreceptor blocker and a high dosage of arginine vasotocin.
Austin, HB; Jones, RE; Summers, CH, 1985
)
0.48
" Decreasing [Mg2+]0 from the optimal concentration of 1 to 0 mM caused a 20-fold parallel rightward displacement of the oxytocin dose-response curve."( Magnesium ions and oxytocin sensitivity of the male mouse anococcygeus.
Gibson, A, 1985
)
0.27
" Log dose-response curves were obtained for different doses of arginine-vasopressin (AVP), arginine-vasotocin (AVT), mesotocin (MT), oxitocin (OT) and ovine CRF (oCRF) and compared to the response obtained with dilutions of duck median eminence extracts (DME)."( The regulation of the corticomelanotropic cell activity in Aves--II. Effect of various peptides on the release of ACTH from dispersed, perfused duck pituitary cells.
Castro, MG; Estivariz, FE; Iturriza, FC, 1986
)
0.49
" Log dose-response curves were obtained for all the peptides ranging from 5 to 100 ng/ml."( The regulation of the corticomelanotropic cell activity in aves. III--Effect of various peptides on the release of MSH from dispersed, perfused duck pituitary cells. Cosecretion of ACTH with MSH.
Castro, MG; Estivariz, FE; Iturriza, FC, 1988
)
0.27
" A dose-response curve for amiloride obtained in the presence of AVT showed that amiloride completely inhibits ISC."( Stimulation of sodium transport by aldosterone and arginine vasotocin in A6 cells.
Bindels, RJ; Reif, MC; Schafer, JA, 1988
)
0.52
" Dose-response curves of duodenal and proventriculus extracts were parallel with synthetic AVT and MT standards."( Distribution of immunoreactive vasotocin and mesotocin in the chicken gastrointestinal tract.
Kinzler, SL; Koike, TI; Neldon, HL; Robinzon, B, 1988
)
0.56
" Comparison of the dose-response relationships between PAVT and glomerular and tubular mechanisms of antidiuresis revealed that tubular mechanisms are of primary importance and glomerular mechanisms of secondary importance in the conservation of water by the avian kidney."( Contributions of glomerular and tubular mechanisms to antidiuresis in conscious domestic fowl.
Braun, EJ; Stallone, JN, 1986
)
0.27
" Comparison of the dose-response relationships between PAVT and glomerular and tubular mechanisms of antidiuresis revealed that tubular mechanisms are of primary importance and glomerular mechanisms of secondary importance in the conservation of water by the avian kidney."( Contributions of glomerular and tubular mechanisms to antidiuresis in conscious domestic fowl.
Braun, EJ; Stallone, JN, 1985
)
0.27
" Dose-response curves for each peptide showed that in the case of 8-arginine vasopressin, 8-lysine vasopressin and 8-ornithine vasopressin the augmentation of rate of fluid uptake did not differ in the absence or in the presence of NaCl in the bathing solution; whereas in the case of 8-arginine vasotocin, oxytocin, and 8-ornithine oxytocin the augmentation was greater in the presence of sodium chloride."( Natriferic and hydrosmotic effects of neurohypophysial peptides and their analogues in augmenting fluid uptake by Bufo melanostictus.
Elliott, AB, 1968
)
0.42
"" The precision of the method derives from a direct comparison between the cumulative dose-response curve of an agonist of unknown potency acting on one hemibladder and that of a reference compound acting on the contralateral hemibladder."( A sensitive hydroosmotic toad bladder assay. Affinity and intrinsic activity of neurohypophyseal peptides.
Eggena, P; Schwartz, IL; Walter, R, 1968
)
0.25
" Dose-response curves for NE and ACh, which were prepared by measuring isometric contractions, are similar to those reported for mammalian vas deferens."( Contractions of amphibian Wolffian duct in response to acetylcholine, norepinephrine, and arginine vasotocin.
Lais, LT; Moore, FL; Zoeller, RT, 1983
)
0.48
" Two parameters were analyzed from the dose-response curve: pD2 and the relative contractile response compared to the maximal one induced by oxytocin."( Influence of estrogen and progesterone on the uterine sensitivity in vitro to neuropituitary hormones in the Brazilian marsupial Didelphis albiventris: comparison with lactating animals.
Calixto, SL; Ladosky, W, 1984
)
0.27
"Over a broad dose (or concentration) range, dose-response relationships frequently display a bell-shaped form."( Models to explain dose-response relationships that exhibit a downturn phase.
Pliska, V, 1994
)
0.29
" The drugs were: AVT, V1-agonist ([Phe2 Orn8]VT), and V2-agonist (DDAVP), in dosage of 50 pmol/kg*min each."( At low dose, arginine vasotocin has vasopressor rather than vasodepressor effect in chickens.
Koike, TI; Marks, PA; Robinzon, B, 1993
)
0.6
" Current trials are examining the efficacy and dosing regimens of atosiban."( Atosiban.
Shubert, PJ, 1995
)
0.29
" AVT, at a dosage of 100 microg/100 g toad, significantly increased both the amount of calling behavior per individual and the probability that an individual would call."( Differential effects of arginine vasotocin and gonadotropin-releasing hormone on sexual behaviors in an anuran amphibian.
Dixon, TB; Propper, CR, 1997
)
0.58
"Contractile activity was assessed by calculating the area under the curve, to obtain a dose-response curve of each drug."( In vitro study of tocolytic effect of rofecoxib, a specific cyclo-oxygenase 2 inhibitor. Comparison and combination with other tocolytic agents.
Benchaib, M; Doret, M; Gharib, C; Mellier, G; Pasquier, JC; Piacenza, JM, 2002
)
0.31
" Dose-response studies and phase III studies in which study or placebo groups could use alternative tocolytic agents also suggested that atosiban was an effective tocolytic agent with very few adverse events."( The development and introduction of anti-oxytocic tocolytics.
Lamont, RF, 2003
)
0.32
" In a dose-response study, 10-fold increases in serosal hydrin 2 concentration triggered significant changes in TEP and Isc, with maximal responses observed at 10 ng/ml."( Effects of hydrin 2 on cutaneous electrical properties of Rana pipiens.
Ford, NA; Robinson, GD, 2003
)
0.32
" CI snakes injected with a physiological dosage of AVT also evidenced thermal depression."( Physiological and hormonal control of thermal depression in the tiger snake, Notechis scutatus.
Bradshaw, D; Bradshaw, F; Ladyman, M, 2006
)
0.33
" Response selectivity was further established in a dose-response study that revealed an inverted U-shaped function."( New insights into neuropeptide modulation of aggression: field studies of arginine vasotocin in a territorial tropical damselfish.
Bass, AH; Santangelo, N, 2006
)
0.56
" However, the preferred type of beta-adrenergic receptor agonist and dosage are unclear."( Acute tocolysis for uterine activity reduction in term labor: a review.
de Heus, R; Derks, JB; Mulder, EJ; Visser, GH, 2008
)
0.35
" Estradiol replacement in 3-week ovariectomized fish produced dosage-dependent biphasic effects: the lower dosage (0."( Effects of hCG and ovarian steroid hormones on vasotocin levels in the female catfish Heteropneustes fossilis.
Joy, KP; Singh, V, 2009
)
0.61
"The adverse effects in the pulsatile administration of fenoterol for short duration were only dependent on the initial dosage for the arrest of preterm labour."( [Effectiveness and safety of atosiban vs. pulsatile administration of fenoterol in the treatment of preterm labour].
Dudenhausen, J; Hopp, H; Nonnenmacher, A, 2009
)
0.35
"The purpose of this study was to identify the effects of abdominal breathing on state anxiety, stress and tocolytic dosage for pregnant women in preterm labor."( [Effects of abdominal breathing on state anxiety, stress, and tocolytic dosage for pregnant women in preterm labor].
Song, JE; Yu, WJ, 2010
)
0.36
" "The Ritodrine dosage for the experimental group will be lower than that of the control group" was supported."( [Effects of abdominal breathing on state anxiety, stress, and tocolytic dosage for pregnant women in preterm labor].
Song, JE; Yu, WJ, 2010
)
0.36
" The sperm-release responses reported have been correspondingly diverse, highlighting a need to quantify dose-response relationships on a species-specific basis."( Effects of luteinizing hormone-releasing hormone and arginine-vasotocin on the sperm-release response of Günther's Toadlet, Pseudophryne guentheri.
Silla, AJ, 2010
)
0.6
"These results suggest that IVF-ET using lower dosage of atosiban may improve pregnancy outcomes of patients with RIF."( Use of an oxytocin antagonist in in vitro fertilization-embryo transfer for women with repeated implantation failure: a retrospective study.
Chang, FM; Chou, PY; Hung, KH; Pan, HA; Wu, MH, 2011
)
0.37
" In addition, AVT stimulation of absorptive Isc conformed to a dose-response curve, with significant effects achieved at 10(-8)M, which corresponds to physiological values of plasma AVT for this species."( AVT is involved in the regulation of ion transport in the intestine of the sea bream (Sparus aurata).
Canario, AV; Carvalho, ES; Fuentes, J; Gregório, SF; Mancera, JM; Martínez-Rodríguez, G; Martos-Sitcha, JA; Power, DM, 2013
)
0.39
" In ovo administration of high dose CORT significantly suppressed the growth rate from 3weeks of age and increased the frequency of aggressive behaviors, and the dosage was associated with elevated plasma CORT concentrations and significantly downregulated hypothalamic expression of arginine vasotocin (AVT) and corticotropin-releasing hormone (CRH)."( Embryonic exposure to corticosterone modifies aggressive behavior through alterations of the hypothalamic pituitary adrenal axis and the serotonergic system in the chicken.
Ahmed, AA; Ma, W; Ni, Y; Zhao, R; Zhou, Q, 2014
)
0.58
" We found that solely the experimental transient higher dosage of AVT led to a decrease of cleaners' willingness to feed against their preference, while IT and AVT antagonists had no significant effects."( Arginine vasotocin reduces levels of cooperative behaviour in a cleaner fish.
Bshary, R; Cardoso, SC; Oliveira, RF; Paitio, JR; Soares, MC, 2015
)
0.83
" In turn, AVT had a dual effect on killifish opercular Isc: an immediate response (~3min) with Isc reduction in an inverted bell-shaped dose-response manner with higher current decrease (-22 μA⋅cm(-2)) at 10(-8) M AVT, and a sustained dose-dependent stimulation of Cl(-) secretion (stable up to 1h), with a threshold significant effect at 10(-8) M and maximal stimulation (~20 μA⋅cm(-2)) at 10(-6)M."( AVT and IT regulate ion transport across the opercular epithelium of killifish (Fundulus heteroclitus) and gilthead sea bream (Sparus aurata).
Fuentes, J; Mancera, JM; MartínezRodríguez, G; Martos-Sitcha, JA, 2015
)
0.42
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (1,825)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990660 (36.16)18.7374
1990's369 (20.22)18.2507
2000's392 (21.48)29.6817
2010's341 (18.68)24.3611
2020's63 (3.45)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 41.51

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index41.51 (24.57)
Research Supply Index7.60 (2.92)
Research Growth Index4.43 (4.65)
Search Engine Demand Index65.84 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (41.51)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials69 (3.57%)5.53%
Reviews155 (8.01%)6.00%
Case Studies19 (0.98%)4.05%
Observational1 (0.05%)0.25%
Other1,690 (87.38%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Clinical Trials (2)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Phase 2 Study of Clinical Utility of Combination Tocolysis in Preterm Labor [NCT01429545]Phase 2110 participants (Actual)Interventional2007-04-30Completed
Randomized, Double-blind, Multicenter, Phase III Study Comparing the Efficacy and Safety of Retosiban Versus Atosiban Therapy for Women in Spontaneous Preterm Labor [NCT02292771]Phase 397 participants (Actual)Interventional2015-03-16Terminated(stopped due to The study was stopped due to the feasibility of recruiting the study in a timely manner)
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

TrialOutcome
NCT02292771 (42) [back to overview]Head Circumference of Neonates
NCT02292771 (42) [back to overview]Length of Neonatal Hospital Stay
NCT02292771 (42) [back to overview]Length of Stay in Specialized Care Unit
NCT02292771 (42) [back to overview]Number of Maternal Participants With AEs of Special Interest (AESI)
NCT02292771 (42) [back to overview]Number of Maternal Participants With Disease Related AEs (DRE)
NCT02292771 (42) [back to overview]Number of Neonatal Participants With AESI
NCT02292771 (42) [back to overview]Number of Neonatal Participants With DRE
NCT02292771 (42) [back to overview]Number of Neonates With Any Composite Neonatal Morbidity and Mortality, Excluding RDS
NCT02292771 (42) [back to overview]Number of Neonates With Composite Neonatal Morbidity and Mortality
NCT02292771 (42) [back to overview]Number of Newborn Participants With Hospital Readmission
NCT02292771 (42) [back to overview]Number of Participants With Births <=24 Hours From the First Study Treatment
NCT02292771 (42) [back to overview]Number of Participants With Births <=48 Hours From the First Study Treatment
NCT02292771 (42) [back to overview]Number of Participants With Births <=7 Days From the First Study Treatment
NCT02292771 (42) [back to overview]Number of Participants With Births at Term
NCT02292771 (42) [back to overview]Number of Participants With Births Prior to 28 0/7 Weeks Gestation
NCT02292771 (42) [back to overview]Number of Participants With Births Prior to 32 0/7 Weeks Gestation
NCT02292771 (42) [back to overview]Number of Participants With Births Prior to 35 0/7 Weeks Gestation
NCT02292771 (42) [back to overview]Number of Participants With Births Prior to 37 0/7 Weeks Gestation
NCT02292771 (42) [back to overview]Number of Participants With Fetal AESI
NCT02292771 (42) [back to overview]Retosiban Clearance
NCT02292771 (42) [back to overview]Time to Delivery From the Start of Investigational Product (IP) Administration
NCT02292771 (42) [back to overview]Volume of Distribution of Retosiban
NCT02292771 (42) [back to overview]Weight of Neonates
NCT02292771 (42) [back to overview]Change From Baseline in Albumin and Protein Levels in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Alkaline Phosphatase (ALP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), Gamma Glutamyl Transferase (GGT) and Lactate Dehydrogenase (LDH) Levels in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelets and Leukocytes Count in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Calcium, Chloride, Carbon Dioxide, Glucose, Potassium, Magnesium, Phosphate and Sodium Level in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Diastolic Blood Pressure (DBP) and Systolic Blood Pressure (SBP) in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Direct Bilirubin, Bilirubin, Indirect Bilirubin, Creatinine and Urate Levels in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Erythrocyte Mean Corpuscular Volume (MCV) and Mean Platelet Volume (MPV) in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Erythrocytes in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Heart Rate in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Hemoglobin and Erythrocyte Mean Corpuscular Hemoglobin Concentration (MCHC) in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Respiratory Rate in Maternal Participants
NCT02292771 (42) [back to overview]Change From Baseline in Temperature in Maternal Participants
NCT02292771 (42) [back to overview]Maternal Length of Stay in Hospital
NCT02292771 (42) [back to overview]Neonatal APGAR Scores
NCT02292771 (42) [back to overview]Number of Maternal Participants With Non-serious Adverse Events (AEs) and Serious Adverse Events (SAEs)
NCT02292771 (42) [back to overview]Number of Neonatal Participants With Non-serious AEs and SAEs
NCT02292771 (42) [back to overview]Number of Neonates With Each Individual Component of Composite Neonatal Morbidity and Mortality
NCT02292771 (42) [back to overview]Number of Participants Admitted to Particular Hospital Unit
NCT02292771 (42) [back to overview]Number of Participants With Fetal Non-serious AEs and SAEs

Head Circumference of Neonates

The head circumference was determined from the neonate birth record. Only those participants with data available at the specified data points were analyzed. (NCT02292771)
Timeframe: Up to 17 weeks

Interventioncentimeters (cm) (Mean)
Retosiban32.95
Atosiban33.00

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Length of Neonatal Hospital Stay

The length of stay was collected from medical records and was calculated as the days between the delivery date and time and discharge date and time. Log of length of stay was calculated as treatment plus GA at randomization plus established progesterone use based on Analysis of covariance (ANCOVA) model. The p-value was calculated using t-test method. Neonatal ITT Population comprised of all neonates whose mothers were the randomized participants who have been exposed to study treatment, that is, mothers from the ITT Population. (NCT02292771)
Timeframe: Up to 28 days post estimated date of delivery (EDD) of 40 0/7 weeks gestation

InterventionDays (Least Squares Mean)
Retosiban4.98
Atosiban4.38

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Length of Stay in Specialized Care Unit

Length of neonatal stay in specialized care unit like Intensive Care Unit (ICU) or Neonatal Intensive Care Unit (NICU) are reported. (NCT02292771)
Timeframe: Up to 28 days post EDD (40 0/7 weeks gestation)

InterventionDays (Median)
Retosiban13.65
Atosiban12.49

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Number of Maternal Participants With AEs of Special Interest (AESI)

Maternal AESI included: maternal death; chorioamnionitis and its complications (clinical chorioamnionitis, preterm premature rupture of membranes, endomyometritis, wound infection, pelvic abscess, bacteremia, septic shock, disseminated intravascular coagulation, and adult RDS); placental abruption; postpartum hemorrhage - postpartum hemorrhage and/or retained placenta and pulmonary edema. The number of participants with at least one AESI has been presented. (NCT02292771)
Timeframe: Up to 6 weeks post-delivery

InterventionParticipants (Number)
Retosiban4
Atosiban7

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Number of Neonatal Participants With AESI

Neonatal AESI included: Neonatal death; Asphyxia; Infections (early onset neonatal sepsis, septic shock, pneumonia, meningitis); RDS; Hypotension; IVH/periventricular leukomalacia; Bronchopulmonary dysplasia; Neonatal acidosis; Hyperbilirubinemia; Necrotizing enterocolitis; and Hypoxic ischemic encephalopathy. The number of neonatal participants who experienced at least one AESI has been presented. (NCT02292771)
Timeframe: Up to 28 days after EDD of 40 weeks gestation

InterventionParticipants (Number)
Retosiban19
Atosiban16

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Number of Neonatal Participants With DRE

The disease related neonatal events occurring in Infants born prior to 37 completed weeks included: apnea (severe), respiratory failure due to fatigue, hypoxia, or air leak from alveolar injury, patent ductus arteriosus, bradycardia, ventriculomegaly, cerebellar hemorrhage, hydrocephalus other than congenital, gastroesophageal reflux, aspiration pneumonia, anemia, retinopathy of prematurity (all stages), hearing disorder, temperature instability and hypoglycemia. The number of participants with at least one DRE has been presented. (NCT02292771)
Timeframe: Up to 28 days after EDD of 40 weeks gestation

InterventionParticipants (Number)
Retosiban5
Atosiban3

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Number of Neonates With Any Composite Neonatal Morbidity and Mortality, Excluding RDS

The neonatal composite endpoint was determined from review of medical records and included the following components: fetal or neonatal death, RDS, BPD, NEC or isolated perforation, sepsis based on positive blood culture with clinical features of sepsis, meningitis based on positive results for cerebrospinal fluid culture performed as part of infection workup, ROP, IVH, white matter injury and cerebellar hemorrhage. Number of neonates with any composite neonatal morbidity and mortality component, excluding RDS has been presented. (NCT02292771)
Timeframe: Up to 28 weeks after EDD (40 weeks gestation)

InterventionParticipants (Number)
Retosiban0
Atosiban1

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Number of Neonates With Composite Neonatal Morbidity and Mortality

The neonatal composite endpoint was determined from review of medical records and included the following components: fetal or neonatal death, Respiratory Distress Syndrome (RDS), bronchopulmonary dysplasia (BPD), necrotizing enterocolitis (NEC) or isolated perforation, sepsis based on positive blood culture with clinical features of sepsis, meningitis based on positive results for cerebrospinal fluid culture performed as part of infection workup, retinopathy of prematurity (ROP), Intraventricular Hemorrhage (IVH), white matter injury and cerebellar hemorrhage. (NCT02292771)
Timeframe: Up to 28 weeks after EDD (40 weeks gestation)

InterventionParticipants (Number)
Retosiban3
Atosiban2

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Number of Newborn Participants With Hospital Readmission

Newborn hospital readmission following hospitalization for birth was obtained from the newborn's medical records. Only those participants with data available at the specified data points were analyzed. (NCT02292771)
Timeframe: Up to 28 days of EDD (40 0/7 weeks gestation)

InterventionParticipants (Number)
Retosiban2
Atosiban3

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Number of Participants With Births <=24 Hours From the First Study Treatment

Number of participants who delivered in less than or equal to 24 hours from first dose of study treatment has been presented. (NCT02292771)
Timeframe: Up to 24 hours

InterventionParticipants (Number)
Retosiban3
Atosiban6

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Number of Participants With Births <=48 Hours From the First Study Treatment

Number of participants who delivered in less than or equal to 48 hours from first dose of study treatment has been presented. (NCT02292771)
Timeframe: Up to 48 hours

InterventionParticipants (Number)
Retosiban6
Atosiban6

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Number of Participants With Births <=7 Days From the First Study Treatment

Number of participants who delivered in less than or equal to 7 days from first dose of study treatment has been presented. (NCT02292771)
Timeframe: Up to 7 days

InterventionParticipants (Number)
Retosiban10
Atosiban7

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Number of Participants With Births at Term

Participants were considered to have delivered at term if the gestational age was >=37 0/7. The number of participants who delivered at term, that is, 37 0/7 to 41 6/7 weeks gestation has been presented. Logistic regression model was used to calculate p-values. (NCT02292771)
Timeframe: Up to 17 weeks

InterventionParticipants (Number)
Retosiban21
Atosiban22

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Number of Participants With Births Prior to 28 0/7 Weeks Gestation

The number of participants who delivered prior to 28 0/7 weeks gestation has been presented. Only those maternal participants who were randomized prior to 28 0/7 week's gestation and delivered were included. (NCT02292771)
Timeframe: Up to 4 weeks

InterventionParticipants (Number)
Retosiban0
Atosiban0

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Number of Participants With Births Prior to 32 0/7 Weeks Gestation

Number of participants who delivered prior to 32 0/7 weeks gestation has been presented. Only those maternal participants who were randomized prior to 32 0/7 week's gestation and delivered were included. (NCT02292771)
Timeframe: Up to 8 weeks

InterventionParticipants (Number)
Retosiban3
Atosiban3

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Number of Participants With Births Prior to 35 0/7 Weeks Gestation

Number of participants who delivered prior to 35 0/7 weeks gestation has been presented. Only those maternal participants who were randomized prior to 35 0/7 week's gestation and delivered were included. (NCT02292771)
Timeframe: Up to 11 weeks

InterventionParticipants (Number)
Retosiban14
Atosiban14

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Number of Participants With Births Prior to 37 0/7 Weeks Gestation

Gestational age (GA) at birth (weeks) is defined as the GA when the baby is born. Participants were considered to have delivered prior to 37 0/7 weeks, that is preterm , if the GA at birth is less than 37 0/7 weeks. The number of participants who delivered prior to 37 0/7 weeks gestation has been presented. Logistic regression model was used to calculate p-values. (NCT02292771)
Timeframe: Up to 13 weeks

InterventionParticipants (Number)
Retosiban25
Atosiban28

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Number of Participants With Fetal AESI

Fetal AESI included: intrauterine fetal demise; category II or III fetal heart rate tracing; and fetal inflammatory response syndrome characterized by cord blood interleukin-6 >11 picogram per milliliter (pg/mL), funisitis, or chorionic vasculitis. The number of participants who experienced at least one AESI has been presented. (NCT02292771)
Timeframe: Up to 17 weeks

InterventionParticipants (Number)
Retosiban5
Atosiban5

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Retosiban Clearance

Maternal blood samples were collected at the indicated time points for pharmacokinetic analysis. Data is a combined data set. Data is presented for 10 participants from retosiban arm of study 200719 (NCT02377466) and 43 participants from retosiban arm of study 200721 (NCT02292771). (NCT02292771)
Timeframe: Day 1 (2 to 4 hours, 10 to 14 hours) and Day 2 (22 to 26 hours, and 48 to 54 hours) post-infusion

InterventionLiters per hour (Geometric Mean)
Retosiban83.4

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Time to Delivery From the Start of Investigational Product (IP) Administration

Time to delivery is the number of days from the first dose of study treatment until delivery. The time to delivery was calculated as the days between the delivery and start time of the study treatment infusion using the formula: Time to delivery (days) = (date and time of delivery minus date and time of start of infusion) divided by (24 multiplied by 60). The adjusted mean number of days to delivery along with standard error has been presented. Maternal intent-to-treat (ITT) Population comprised of all mothers randomly assigned to treatment who have been exposed to study treatment irrespective of their compliance to the planned course of treatment. (NCT02292771)
Timeframe: Up to 17 weeks

InterventionDays (Mean)
Retosiban32.51
Atosiban33.71

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Volume of Distribution of Retosiban

Maternal blood samples were collected at the indicated time points for pharmacokinetic analysis. Data is a combined data set. Data is presented for 10 participants from retosiban arm of study 200719 (NCT02377466) and 43 participants from retosiban arm of study 200721 (NCT02292771). (NCT02292771)
Timeframe: Day 1 (2 to 4 hours, 10 to 14 hours) and Day 2 (22 to 26 hours, and 48 to 54 hours) post-infusion

InterventionLiters (Geometric Mean)
Retosiban68.6

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Weight of Neonates

The weight of neonates was obtained from the neonate birth record. The mean weight of neonates and standard deviation has been presented. Only those participants with data available at the specified data points were analyzed. (NCT02292771)
Timeframe: Up to 17 weeks

Interventiongrams (g) (Mean)
Retosiban2761.9
Atosiban2844.4

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Change From Baseline in Albumin and Protein Levels in Maternal Participants

Blood samples were collected for the evaluation of change in albumin and protein levels from Baseline. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventiongrams per liter (g/L) (Mean)
Albumin; Day 2, n=35, 35Albumin; Post-infusion assessment, n=30, 35Albumin; early withdrawal, n=1, 1Protein; Day 2, n=35, 35Protein; Post-infusion assessment, n=30, 35Protein; early withdrawal, n=1, 1
Atosiban-2.0-0.2-8.0-3.30.0-12.0
Retosiban-1.90.3-4.0-3.70.5-5.0

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Change From Baseline in Alkaline Phosphatase (ALP), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), Gamma Glutamyl Transferase (GGT) and Lactate Dehydrogenase (LDH) Levels in Maternal Participants

Blood samples were collected for the evaluation of change in ALP, ALT, AST, GGT and LDH from Baseline. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
InterventionInternational Units per liter (IU/L) (Mean)
ALP; Day 2, n=35, 35ALP; Post-infusion assessment, n=30, 35ALP; early withdrawal, n=1, 1AST; Day 2, n=34, 35AST; Post-infusion assessmet, n=29, 35AST; early withdrawal, n=1, 1ALT; Day 2, n= 35, 35ALT; Post-infusion assessment, n= 30, 35ALT; early withdrawal, n= 1, 1GGT; Day 2, n= 35, 35GGT; Post-infusion assessment, n=30, 35GGT; eearly withdrawal, n=1, 1LDH; Day 2, n=34, 35LDH; Post-infusion assessment, n=29, 35LDH; early withdrawal, n=1, 1
Atosiban-12.65.9-19.0-1.7-1.31.00.00.85.0-0.92.30.0-20.0-5.4-59.0
Retosiban-10.114.1-6.0-0.9-1.3-3.0-0.20.0-2.0-0.417.60.0-9.7-2.4-18.0

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Change From Baseline in Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Platelets and Leukocytes Count in Maternal Participants

Blood samples were collected for the evaluation of change in basophils, eosinophils, lymphocytes, monocytes, neutrophils, platelets and leukocytes count. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
InterventionBillion cells per liter (L) (Mean)
Basophils;Day2,n=21,23Basophils;Post-infusion assessment,n=24,28Basophils;early withdrawal,n=1,1Eosinophils;Day2,n=21,23Eosinophils;Post-infusion assessment,n=24,28Eosinophils;early withdrawal,n=1,1Lymphocytes;Day2,n=21,23Lymphocytes;Post-infusion assessment,n=24,28Lymphocytes;early withdrawal,n=1,1Monocytes;Day2,n=21,23Monocytes;Post-infusion assessment,n=24,28Monocytes;early withdrawal,n=1,1Neutrophils;Day2,n=21,23Neutrophils;Post-infusion assessment,n=24,28Neutrophils;early withdrawal,n=1,1Platelets;Day2,n=22,25Platelets;Post-infusion assessment,n=24,31Platelets;early withdrawal,n=1,1Leukocytes;Day2,n=23,25Leukocytes;Post-infusion assessment,n=25,30Leukocytes;early withdrawal,n=1,1
Atosiban0.0100.0070.030-0.0370.0660.0500.0670.233-1.7700.0440.1330.4100.559-0.670-3.550-2.420.6-58.00.72-0.05-4.80
Retosiban0.0030.001-0.020-0.0100.0230.0300.1860.3480.2700.0820.222-0.1600.102-1.865-0.7100.021.5-33.00.17-1.18-0.60

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Change From Baseline in Calcium, Chloride, Carbon Dioxide, Glucose, Potassium, Magnesium, Phosphate and Sodium Level in Maternal Participants

Blood samples were collected for the evaluation of change from Baseline in levels of calcium, chloride, carbon dioxide, glucose, potassium, magnesium, phosphate, and sodium. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventionmillimoles per liter (mmol/L) (Mean)
Calcium; Day 2, n=34, 35Calcium; Post-infusion assessment, n=29, 35Calcium; early withdrawal, n=1, 1Chloride; Day 2, n=35, 35Chloride; Post-infusion assessment, n=30, 35Chloride; early withdrawal, n=1, 1Carbon dioxide; Day 2, n=34, 35Carbon dioxide, Post-infusion assessment, n=29,35Carbon dioxide, early withdrawal, n=1, 1Glucose; Day 2, n=35,35Glucose; Post-infusion assessment, n=30, 35Glucose; early withdrawal, n= 1, 1Potassium; Day 2, n= 34, 35Potassium; Post-infusion assessment, n= 29, 35Potassium; early withdrawal, n= 1,1Magnesium; Day 2, n= 35,35Magnesium, Post-infusion assessment, n= 30,35Magnesium; early withdrawal, n= 1,1Phosphate; Day 2, n= 35,35Phosphate; Post-infusion assessment, n= 30,35Phosphate; early withdrawal, n= 1,1Sodium; Day 2, n= 35,35Sodium; Post-infusion assessment, n= 30,35Sodium; early withdrawal, n= 1,1
Atosiban-0.0780.023-0.2301.4-1.38.00.31.96.01.51-0.35-5.20-0.060.180.50-0.0030.0090.030-0.1700.094-0.1200.1-0.23.0
Retosiban-0.0970.018-0.1201.5-1.52.00.71.9-2.00.13-0.700.700.060.21-0.100.0730.026-0.060-0.1010.0410.1000.7-1.1-1.0

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Change From Baseline in Diastolic Blood Pressure (DBP) and Systolic Blood Pressure (SBP) in Maternal Participants

SBP and DBP were measured during inpatient randomized treatment phase (15 to 30 minutes, 4 to 8 hours, and 20 to 24 hours after the start of the infusion, at the end of the infusion) and at the post-infusion assessment. Baseline is the last available assessment prior to first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). (NCT02292771)
Timeframe: Baseline and up to 1 week

,
InterventionMillimeter of mercury (mmHg) (Mean)
DBP; Day 1: 15 to 30 minutes, n=42,45DBP; Day 1: 4 to 8 hours, n=42,43DBP; Day 1: 20 to 24 hours, n=38,41DBP; Day 2, n=40,42DBP; Post-infusion assessment, n=35,41SBP; Day 1: 15 to 30 minutes, n=42,45SBP; Day 1: 4 to 8 hours, n=42,43SBP; Day 1: 20 to 24 hours, n=38,41SBP; Day 2, n=40,42SBP; Post-infusion assessment, n=35,41
Atosiban-0.7-3.7-4.1-2.61.3-0.4-3.3-5.2-3.0-2.1
Retosiban-3.6-4.3-5.7-4.4-1.6-2.5-4.3-4.1-3.9-1.5

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Change From Baseline in Direct Bilirubin, Bilirubin, Indirect Bilirubin, Creatinine and Urate Levels in Maternal Participants

Blood samples were collected for the evaluation of change from Baseline in levels of direct bilirubin, bilirubin, indirect bilirubin, creatinine and urate. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventionmicromoles per liter (µmol/L) (Mean)
Direct Bilirubin; Day2, n=35,35Post-infusion assessment, n=30,35Direct Bilirubin;early withdrawal, n=1,1Bilirubin;Day2, n= 35,35Bilirubin; Post-infusion assessment, n= 30, 35Bilirubin; early withdrawal, n= 1,1Indirect Bilirubin; Day2, n=35,35Indirect Bilirubin;Postinfusion assessment,n=30,35Indirect Bilirubin; early withdrawal, n=1,1Creatinine; Day2, n=35,34Creatinine; Post-infusion assessment, n=30,33Creatinine; early withdrawal, n=1,1
Atosiban-0.3-0.10.0-1.3-0.5-3.0-1.1-0.4-3.00.040.72-6.10
Retosiban-0.3-0.50.0-0.7-1.1-2.0-0.4-0.6-2.01.752.19-0.90

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Change From Baseline in Erythrocyte Mean Corpuscular Volume (MCV) and Mean Platelet Volume (MPV) in Maternal Participants

Blood samples were collected for the evaluation of change in MCV and MPV from Baseline. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventionfemtoliter (fL) (Mean)
MCV; Day 2, n=23, 27MCV; Post-infusion assessment, n=25, 31MCV; early withdrawal, n=1, 1MPV; Day 2, n=22, 25MPV, Post-infusion assessment, n=24, 31MPV, early withdrawal, n=1, 1
Atosiban-0.4-1.0-5.00.06-0.03-1.40
Retosiban0.3-1.2-1.00.05-0.100.00

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Change From Baseline in Erythrocytes in Maternal Participants

Blood samples were collected for the evaluation of change in erythrocytes from Baseline. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
InterventionTrillion cells per liter (Mean)
Day 2, n=23, 27Post-infusion assessment, n=25, 31Early withdrawal, n =1, 1
Atosiban-0.290.05-0.70
Retosiban-0.220.06-0.20

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Change From Baseline in Heart Rate in Maternal Participants

Heart rate was measured during inpatient randomized treatment phase (15 to 30 minutes, 4 to 8 hours, and 20 to 24 hours after the start of the infusion, at the end of the infusion) and at the post-infusion assessment. Baseline is the last available assessment prior to first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). (NCT02292771)
Timeframe: Baseline and up to 1 week

,
InterventionBeats per minute (Mean)
Day 1: 15 to 30 minutes, n=42,46Day 1: 4 to 8 hours, n=42, 43Day 1: 20 to 24 hours, n=38, 41Day 2, n=39, 41Post-infusion assessment, n=35, 41
Atosiban-0.8-3.0-3.1-2.3-1.8
Retosiban-3.0-5.0-1.2-2.2-2.7

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Change From Baseline in Hemoglobin and Erythrocyte Mean Corpuscular Hemoglobin Concentration (MCHC) in Maternal Participants

Blood samples were collected for the evaluation of change in hemoglobin levels and MCHC from Baseline. Baseline is defined as the last available assessment prior to the first dose of study treatment. Change from Baseline is the post-dose visit value minus. NA indicates standard deviation was not calculable for a single data point. (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventiongrams per liter (g/L) (Mean)
Hemoglobin; Day2, n=23, 27Hemoglobin; Post-infusion assessment, n=25, 31Hemoglobin; early withdrawal, n=1, 1MCHC; Day 2, n=23, 27MCHC; Post-infusion assessment, n=25, 31MCHC; early withdrawal, n=1, 1
Atosiban-8.40.5-19.00.90.424.0
Retosiban-5.40.8-8.01.01.0-3.0

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Change From Baseline in Respiratory Rate in Maternal Participants

Respiratory rate was measured during inpatient randomized treatment phase (15 to 30 minutes, 4 to 8 hours, and 20 to 24 hours after the start of the infusion, at the end of the infusion) and at the post-infusion assessment. Baseline is the last available assessment prior to first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventionbreaths per minute (Mean)
Day 1: 15 to 30 minutes, n=25, 28Day 1: 4 to 8 hours, n=23, 24Day 1: 20 to 24 hours, n=21, 21Day 2, n=23, 24Post-infusion assessment, n=22, 23
Atosiban-0.6-0.8-0.60.2-1.3
Retosiban0.30.00.2-0.3-0.3

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Change From Baseline in Temperature in Maternal Participants

Temperature was measured during inpatient randomized treatment phase (15 to 30 minutes, 4 to 8 hours, and 20 to 24 hours after the start of the infusion, at the end of the infusion) and at the post-infusion assessment. Baseline is the last available assessment prior to first dose of study treatment. Change from Baseline is the post-dose visit value minus Baseline. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). (NCT02292771)
Timeframe: Baseline and up to 1 week

,
Interventiondegree Celsius (Mean)
Day 1: 15 to 30 minutes, n=41, 43Day 1: 4 to 8 hours, n=40, 42Day 1: 20 to 24 hours, n=37, 41Day 2, n=40, 42Post-infusion assessment, n=35, 41
Atosiban0.020.00-0.03-0.06-0.20
Retosiban-0.02-0.06-0.07-0.07-0.18

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Maternal Length of Stay in Hospital

The length of hospital stay associated with hospital admission for preterm labor and term labor/term delivery was collected from review of medical records. Only those participants with data available at the specified data points were analyzed (represented by n=X in category title). (NCT02292771)
Timeframe: Up to 28 days post EDD (40 0/7 weeks gestation)

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InterventionDays (Median)
Preterm labor, n=13, 10Term labor, n=25, 28
Atosiban7.4873.398
Retosiban5.5493.146

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Neonatal APGAR Scores

APGAR is a quick test to assess the health of new born children. The test is performed at 1 and 5 minutes after birth. APGAR scale is determined by evaluating the new born on five categories (appearance, pulse, grimace, activity and respiration) on a scale from zero to two, then summing up the five values obtained. APGAR score ranges from 0 to 10 where a score of 7 and above is normal. The mean and standard deviation of APGAR scores at one minute and at five minutes of birth has been presented.Only those participants with data available at the specified data points were analyzed. (NCT02292771)
Timeframe: Up to 5 minutes after birth

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InterventionScore on APGAR scale (Mean)
one minute, n=46, 50five minutes, n=46, 50
Atosiban8.49.4
Retosiban8.29.1

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Number of Maternal Participants With Non-serious Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose: results in death; is life threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; important medical events that may require medical or surgical intervention to prevent one of the other outcomes described before; is associated with liver injury and impaired liver function. Maternal Safety Population comprised of all mothers randomly assigned to treatment who have been exposed to study treatment. The number of maternal participants who experienced at least one non-serious AE and one SAE has been presented. (NCT02292771)
Timeframe: Up to 6 weeks after delivery

,
InterventionParticipants (Number)
Non-serious AESAE
Atosiban259
Retosiban347

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Number of Neonatal Participants With Non-serious AEs and SAEs

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose: results in death; is life threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; important medical events that may require medical or surgical intervention to prevent one of the other outcomes described before; is associated with liver injury and impaired liver function. The number of participants who experienced at least one non-serious AE and one SAE has been presented. Neonatal Safety Population consisted of neonates whose mothers received randomized treatment. (NCT02292771)
Timeframe: Up to 28 days after the EDD of 40 weeks gestation

,
InterventionParticipants (Number)
Non-serious AEsSAEs
Atosiban1711
Retosiban2310

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Number of Neonates With Each Individual Component of Composite Neonatal Morbidity and Mortality

The neonatal composite endpoint was determined from review of medical records and included the following components: fetal or neonatal death, RDS, BPD, NEC or isolated perforation, sepsis based on positive blood culture with clinical features of sepsis, meningitis based on positive results for cerebrospinal fluid culture performed as part of infection workup, ROP, IVH, cerebellar hemorrhage and white matter injury included Periventricular Leukomalacia PVL), porencephalic cyst, and persistent ventriculomegaly. Number of neonates with with each individual component of the composite neonatal morbidity and mortality has been presented. (NCT02292771)
Timeframe: Up to 28 weeks after EDD (40 weeks gestation)

,
InterventionParticipants (Number)
Fetal deathNeonatal deathRDSBPDNEC or isolated perforationSepsisMeningitisROPIVHPVLPorencephalic CystPersistent VentriculomegalyCerebellar Hemorrhage
Atosiban0110000000000
Retosiban0030000000000

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Number of Participants Admitted to Particular Hospital Unit

Maternal healthcare resource utilization associated with an episode of preterm labor and normal term delivery were collected from the review of medical records. The number of participants who were admitted to a particular hospital unit like general ward, private/semi-private room, recovery, and other has been presented. (NCT02292771)
Timeframe: Up to 28 days post EDD (40 0/7 weeks gestation)

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InterventionParticipants (Number)
Preterm labor, general wardPreterm labor, private/semi-private roomPreterm, OtherNormal term labor, general wardNormal term labor, ward-not specifiedNormal term labor,private/semi-private roomNormal term labor, recoveryNormal term labor, Other
Atosiban704120727
Retosiban913162115

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Number of Participants With Fetal Non-serious AEs and SAEs

An AE is any untoward medical occurrence in a clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose: results in death; is life threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; important medical events that may require medical or surgical intervention to prevent one of the other outcomes described before; is associated with liver injury and impaired liver function. The number of participants who experienced at least one non-serious AE and one SAE has been presented. (NCT02292771)
Timeframe: Up to 17 weeks

,
InterventionParticipants (Number)
Non-serious AESAE
Atosiban62
Retosiban64

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