Page last updated: 2024-10-25

clonidine and Mydriasis

clonidine has been researched along with Mydriasis in 14 studies

Clonidine: An imidazoline sympatholytic agent that stimulates ALPHA-2 ADRENERGIC RECEPTORS and central IMIDAZOLINE RECEPTORS. It is commonly used in the management of HYPERTENSION.
clonidine (amino form) : A clonidine that is 4,5-dihydro-1H-imidazol-2-amine in which one of the amino hydrogens is replaced by a 2,6-dichlorophenyl group.

Mydriasis: Dilation of pupils to greater than 6 mm combined with failure of the pupils to constrict when stimulated with light. This condition may occur due to injury of the pupillary fibers in the oculomotor nerve, in acute angle-closure glaucoma, and in ADIE SYNDROME.

Research Excerpts

ExcerptRelevanceReference
"The clonidine mydriasis model in rats has been widely applied in preclinical research to characterize alpha(2)-adrenoceptor antagonistic properties of drugs."7.73Rat clonidine mydriasis model: imidazoline receptors are not involved. ( Koss, MC; Yu, Y, 2005)
"The relationship between concentration and inhibitory effect of the alpha 2-adrenoceptor antagonist idazoxan on clonidine-induced mydriasis has been studied in the rat using pharmacokinetic-pharmacodynamic simultaneous modelling."7.69A pharmacokinetic-pharmacodynamic linking model for the alpha 2-adrenergic antagonism of idazoxan on clonidine-induced mydriasis in the rat. ( Jane, F; Menargues, A; Obach, R; Pruñonosa, J; Valles, J, 1995)
" Clonidine did not significantly reduce the mydriatic effects of MDMA, although it produced miosis when administered alone."4.88Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex. ( Hysek, CM; Liechti, ME, 2012)
"The clonidine mydriasis model in rats has been widely applied in preclinical research to characterize alpha(2)-adrenoceptor antagonistic properties of drugs."3.73Rat clonidine mydriasis model: imidazoline receptors are not involved. ( Koss, MC; Yu, Y, 2005)
"Apraclonidine testing, which is easy to perform and not distressing to the patient, identified PSD in nearly half of DM patients, the degree of mydriasis being correlated to the duration of DM and the presence of DR."3.73Topical apraclonidine testing discloses pupillary sympathetic denervation in diabetic patients. ( Firat, E; Kansu, T; Kavuncu, S; Koc, F, 2006)
" ligand displacement of [3H]2-(2-methoxy)-1,4-benzodioxan-2-yl)-2-imidazoline ([3H]RX 821002) from membranes prepared from rat cortex after noradrenergic denervation and, secondly, by antagonism of clonidine-induced mydriasis."3.69Receptor binding and functional evidence suggest that postsynaptic alpha 2-adrenoceptors in rat brain are of the alpha 2D subtype. ( Buckett, WR; Butler, SA; Cheetham, SC; Gosden, J; Heal, DJ; Prow, MR, 1995)
"The relationship between concentration and inhibitory effect of the alpha 2-adrenoceptor antagonist idazoxan on clonidine-induced mydriasis has been studied in the rat using pharmacokinetic-pharmacodynamic simultaneous modelling."3.69A pharmacokinetic-pharmacodynamic linking model for the alpha 2-adrenergic antagonism of idazoxan on clonidine-induced mydriasis in the rat. ( Jane, F; Menargues, A; Obach, R; Pruñonosa, J; Valles, J, 1995)
" ABT-200 also antagonized clonidine-induced mydriasis and increased the overflow of [3H]-norepinephrine in guinea pig hippocampal slices, manifestations of blockade of alpha-2 adrenoceptors in the central nervous system."3.69Preclinical pharmacological actions of (+/-)-(1'R*,3R*)-3-phenyl-1- [1',2',3',4'-tetrahydro-5',6'-methylene-dioxy-1'-naphthalenyl) methyl] pyrrolidine methanesulfonate (ABT-200), a potential antidepressant agent that antagonizes alpha-2 adrenergic recepto ( Brune, ME; Buckner, SA; Giardina, WJ; Hancock, AA; Kerkman, DJ; Lee, JY; Morse, PA; Oheim, KW; Stanisic, DS; Warner, RB, 1995)
"The specific binding of the agonist, [3H]UK 14304, and of the antagonist, [3H]RX 821002, to rat brain membranes, as well as clonidine-induced mydriasis, clonidine-induced inhibition and idazoxan-induced stimulation of brain 3,4-dihydroxyphenylalanine (DOPA) synthesis, and clonidine and UK 14304-induced inhibition of twitch responses in the vas deferens were used to evaluate the affinity and sensitivity of central and peripheral alpha 2-adrenoceptors after various treatments with reserpine."3.68Acute and chronic effects of reserpine on biochemical and functional parameters of central and peripheral alpha 2-adrenoceptors. ( García-Sevilla, JA; Garro, MA; Giralt, MT; Menargues, A; Miralles, A; Obach, R; Olmos, G; Pineda, J; Ugedo, L, 1993)
"The specific binding of the agonist [corrected], [3H]clonidine, to neural membranes and clonidine-induced mydriasis were used to evaluate the density and sensitivity [corrected] of alpha 2-adrenoceptors in the brain of spontaneously hypertensive rats (SHR) and sex- and age-matched normotensive Wistar-Kyoto (WKY) rats."3.68Decreased density and sensitivity of alpha 2-adrenoceptors in the brain of spontaneously hypertensive rats. ( Barturen, F; García-Sevilla, JA; Miralles, A; Olmos, G, 1991)
"Clonidine was a more potent inhibitor of fluctuations but significantly enhanced the light reflex."1.28Separate neural mechanisms mediate sufentanil-induced pupillary responses in the cat. ( Sharpe, LG, 1991)

Research

Studies (14)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's8 (57.14)18.2507
2000's2 (14.29)29.6817
2010's3 (21.43)24.3611
2020's1 (7.14)2.80

Authors

AuthorsStudies
González Martín-Moro, J1
Mittendrein, V1
Pilo de la Fuente, B1
Gutiérrez-Ortiz, C1
Slattery, A1
Liebelt, E1
Gaines, LA1
Malem, A1
Hysek, CM1
Liechti, ME1
Yu, Y1
Koss, MC1
Koc, F1
Kansu, T1
Kavuncu, S1
Firat, E1
Heal, DJ2
Cheetham, SC1
Butler, SA1
Gosden, J1
Prow, MR2
Buckett, WR2
Valles, J1
Obach, R2
Menargues, A2
Pruñonosa, J1
Jane, F1
Hancock, AA1
Buckner, SA1
Giardina, WJ1
Brune, ME1
Lee, JY1
Morse, PA1
Oheim, KW1
Stanisic, DS1
Warner, RB1
Kerkman, DJ1
Ugedo, L1
Garro, MA1
Pineda, J1
Giralt, MT1
Miralles, A2
Olmos, G2
García-Sevilla, JA2
Redfern, WS1
Williams, A1
Barturen, F1
Sharpe, LG1

Clinical Trials (5)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Pharmacological Interaction Between Duloxetine and 3,4-Methylenedioxymethamphetamine (MDMA, Ecstasy): Pharmacodynamics (PD) and Pharmacokinetics (PK)[NCT00990067]Phase 116 participants (Actual)Interventional2009-11-30Completed
Pharmacological Interaction Between Reboxetine and 3,4-Methylenedioxymethamphetamine (MDMA, Ecstasy): Pharmacological Effects and Pharmacokinetics[NCT00886886]Phase 116 participants (Actual)Interventional2009-04-30Completed
Pharmacological Interaction Between Clonidine and 3,4-methylenedioxymethamphetamine (MDMA, Ecstasy)[NCT01136278]Phase 116 participants (Actual)Interventional2010-07-31Completed
Interactive Effects of Doxazosin and 3,4-Methylenedioxymethamphetamine (MDMA) in Healthy Subjects[NCT01386177]Phase 116 participants (Actual)Interventional2011-07-31Completed
"Effects of Carvedilol on the Cardiovascular and Subjective Response to MDMA (3,4-Methylenedioxymethamphetamine, Ecstasy)"[NCT01270672]16 participants (Actual)Interventional2011-01-31Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Reviews

2 reviews available for clonidine and Mydriasis

ArticleYear
Common ocular effects reported to a poison control center after systemic absorption of drugs in therapeutic and toxic doses.
    Current opinion in ophthalmology, 2014, Volume: 25, Issue:6

    Topics: Amphetamines; Analgesics, Opioid; Clonidine; Dextromethorphan; Humans; Miosis; Mydriasis; Nystagmus,

2014
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012
Effects of MDMA alone and after pretreatment with reboxetine, duloxetine, clonidine, carvedilol, and doxazosin on pupillary light reflex.
    Psychopharmacology, 2012, Volume: 224, Issue:3

    Topics: Adrenergic Agonists; Adrenergic alpha-2 Receptor Agonists; Adrenergic Uptake Inhibitors; Adult; Affe

2012

Other Studies

12 other studies available for clonidine and Mydriasis

ArticleYear
Eponyms related to oculosympathetic paresis, the apraclonidine test and the comeback of Pourfour du Petit.
    Journal francais d'ophtalmologie, 2022, Volume: 45, Issue:6

    Topics: Clonidine; Eponyms; Humans; Mydriasis; Paresis

2022
Unequal pupils and ptosis.
    BMJ (Clinical research ed.), 2017, 02-23, Volume: 356

    Topics: Adrenergic alpha-2 Receptor Agonists; Aged; Anisocoria; Blepharoptosis; Carotid Arteries; Clonidine;

2017
Rat clonidine mydriasis model: imidazoline receptors are not involved.
    Autonomic neuroscience : basic & clinical, 2005, Jan-15, Volume: 117, Issue:1

    Topics: Adrenergic alpha-Agonists; Adrenergic alpha-Antagonists; Animals; Clonidine; Disease Models, Animal;

2005
Topical apraclonidine testing discloses pupillary sympathetic denervation in diabetic patients.
    Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society, 2006, Volume: 26, Issue:1

    Topics: Administration, Topical; Adrenergic alpha-Agonists; Clonidine; Diabetic Nephropathies; Disease Progr

2006
Receptor binding and functional evidence suggest that postsynaptic alpha 2-adrenoceptors in rat brain are of the alpha 2D subtype.
    European journal of pharmacology, 1995, Apr-24, Volume: 277, Issue:2-3

    Topics: Adrenergic Agents; Adrenergic alpha-Agonists; Adrenergic alpha-Antagonists; Animals; Benzylamines; B

1995
A pharmacokinetic-pharmacodynamic linking model for the alpha 2-adrenergic antagonism of idazoxan on clonidine-induced mydriasis in the rat.
    The Journal of pharmacy and pharmacology, 1995, Volume: 47, Issue:2

    Topics: Administration, Oral; Adrenergic alpha-Antagonists; Animals; Chromatography, High Pressure Liquid; C

1995
Preclinical pharmacological actions of (+/-)-(1'R*,3R*)-3-phenyl-1- [1',2',3',4'-tetrahydro-5',6'-methylene-dioxy-1'-naphthalenyl) methyl] pyrrolidine methanesulfonate (ABT-200), a potential antidepressant agent that antagonizes alpha-2 adrenergic recepto
    The Journal of pharmacology and experimental therapeutics, 1995, Volume: 272, Issue:3

    Topics: Adrenergic alpha-2 Receptor Antagonists; Adrenergic Uptake Inhibitors; Animals; Antidepressive Agent

1995
Acute and chronic effects of reserpine on biochemical and functional parameters of central and peripheral alpha 2-adrenoceptors.
    European journal of pharmacology, 1993, Aug-03, Volume: 239, Issue:1-3

    Topics: Adrenergic alpha-Agonists; Adrenergic alpha-Antagonists; Animals; Binding Sites; Brain; Brimonidine

1993
A re-evaluation of the role of alpha 2-adrenoceptors in the anxiogenic effects of yohimbine, using the selective antagonist delequamine in the rat.
    British journal of pharmacology, 1995, Volume: 116, Issue:3

    Topics: Adrenergic alpha-2 Receptor Antagonists; Adrenergic alpha-Antagonists; Amphetamine; Animals; Behavio

1995
Decreased density and sensitivity of alpha 2-adrenoceptors in the brain of spontaneously hypertensive rats.
    European journal of pharmacology, 1991, Nov-19, Volume: 205, Issue:1

    Topics: Animals; Brain; Clonidine; Hypertension; Male; Mydriasis; Pupil; Radioligand Assay; Rats; Rats, Inbr

1991
Separate neural mechanisms mediate sufentanil-induced pupillary responses in the cat.
    The Journal of pharmacology and experimental therapeutics, 1991, Volume: 256, Issue:3

    Topics: Analgesics, Opioid; Animals; Cats; Clonidine; Drug Interactions; Fentanyl; Male; Morphine; Mydriasis

1991
Effects of antidepressant drugs and electroconvulsive shock on pre- and postsynaptic alpha 2-adrenoceptor function in the brain: rapid down-regulation by sibutramine hydrochloride.
    Psychopharmacology, 1991, Volume: 103, Issue:2

    Topics: Animals; Antidepressive Agents; Biogenic Amines; Brain; Brain Chemistry; Clonidine; Cyclobutanes; Do

1991