Page last updated: 2024-12-06

clentiazem

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Description

Clentiazem is a calcium channel blocker that was initially studied for its potential therapeutic effects in cardiovascular diseases. It inhibits the influx of calcium ions into cells, leading to a decrease in muscle contraction, particularly in the heart and blood vessels. However, clinical trials revealed that clentiazem possessed significant side effects, including hepatotoxicity, which limited its development as a viable drug. Despite its discontinued development for clinical use, clentiazem remains an object of scientific study, particularly in the context of understanding calcium channel modulation and its potential application in other therapeutic areas. The unique structural features of clentiazem and its interactions with calcium channels provide valuable insights into drug design and development strategies.'

clentiazem: structure given in first source [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID57026
CHEMBL ID348763
SCHEMBL ID33909
MeSH IDM0158699

Synonyms (26)

Synonym
PDSP2_000172
clentiazem [inn]
clentiazemum [inn-latin]
(+)-cis-2-(4-methoxyphenyl)-3-acetoxy-5-(2-(n,n-dimethylamino)ethyl)-8-chloro-2,3-dihydro-1,5-benzothiazepin-4(5h)-one
1,5-benzothiazepin-4(5h)-one, 3-(acetyloxy)-8-chloro-5-(2-(dimethylamino)ethyl)-2,3-dihydro-2-(4-methoxyphenyl)-, (25-cis)-
1,5-benzothiazepin-4(5h)-one, 3-(acetyloxy)-8-chloro-5-(2-(dimethylamino)ethyl)-2,3-dihydro-2-(4-methoxyphenyl)-, (2s,3s)-
clentiazem
PDSP1_000173
CHEMBL348763
cas_96128-92-6
bdbm81940
d-ta-3090
40dk034drc ,
96125-53-0
unii-40dk034drc
clentiazemum
(+)-(2s,3s)-8-chloro-5-(2-(dimethylamino)ethyl)-2,3-dihydro-3-hydroxy-2-(p-methoxyphenyl)-1,5-benzothiazepin-4(5h)-one acetate (ester)
clentiazem [mi]
clentiazem [who-dd]
1,5-benzothiazepin-4(5h)-one, 3-(acetyloxy)-8-chloro-5-(2-(dimethylamino)ethyl)-2,3-dihydro-2-(4-methoxyphenyl)-, (2s-cis)-
SCHEMBL33909
Q5131621
1,5-benzothiazepin-4(5h)-one,3-(acetyloxy)-8-chloro-5-[2-(dimethylamino)ethyl]-2,3-dihydro-2-(4-methoxyphenyl)-
[(2s,3s)-8-chloro-5-[2-(dimethylamino)ethyl]-2-(4-methoxyphenyl)-4-oxo-2,3-dihydro-1,5-benzothiazepin-3-yl] acetate
DTXSID901028074
1,5-benzothiazepin-4(5h)-one, 3-(acetyloxy)-8-chloro-5-[2-(dimethylamino)ethyl]-2,3-dihydro-2-(4-methoxyphenyl)-, (2s,3s)-

Research Excerpts

Actions

ExcerptReferenceRelevance
"Clentiazem appear to cause inhibition of PKC translocation that is induced by phorbol esters and PDGF-BB and the phosphorylation of the 80 kDa protein substrate of PKC in vascular smooth muscle cells."( Inhibition of vascular smooth muscle cell proliferation by the calcium antagonist clentiazem: role of protein kinase C.
Alam, R; Alam, S; Kataoka, S; Yatsu, F, 1996
)
1.24

Treatment

Treatment with clentiazem (3, 15, and 30 mg/kg) orally twice daily (b.i.d.) for 28 days after the occurrence of stroke reduced neurologic symptoms and histologic changes of brain and kidney in a dose-dependent manner. The clent Diazem-treated groups had fewer numbers of adherent monocytes and foam cells.

ExcerptReferenceRelevance
"The clentiazem-treated groups had fewer numbers of adherent monocytes and foam cells."( Inhibition of lipid deposition in the hypercholesterolemic rat by clentiazem, a calcium channel blocker.
Fisher, M; Nunnari, JJ; White, SD, 1992
)
1
"Treatment with clentiazem (3, 15, and 30 mg/kg) orally twice daily (b.i.d.) for 28 days after the occurrence of stroke reduced neurologic symptoms and histologic changes of brain and kidney in a dose-dependent manner."( Effect of clentiazem (TA-3090) with posttreatment on neurologic and histologic disorders of stroke-prone spontaneously hypertensive rats with history of stroke.
Iwasaki, H; Kikkawa, K; Kurosawa, H; Murata, S; Nagao, T; Toriumi, W, 1994
)
1.03
"Pretreatment with clentiazem lessened the decrease in cerebral blood flow (control, 4.8 +/- 1.4%; clentiazem, 14.1 +/- 4.1% of the preischemic level; P < .05) and prevented the disappearance of electroencephalographic activity in some rats during ischemia."( Effects of clentiazem on cerebral ischemia induced by carotid artery occlusion in stroke-prone spontaneously hypertensive rats.
Banno, K; Kikkawa, K; Murata, S; Nagao, T; Suzuki, T; Tetsuka, T; Yamauchi, R, 1994
)
1
"Treatment with clentiazem prevented epinephrine-induced death (P < .05), and attenuated the ventricular ischemic lesions and fibrosis, in a dose-dependent manner."( Protective effect of clentiazem against epinephrine-induced cardiac injury in rats.
Billingham, ME; Bristow, MR; Deisher, TA; Fowler, MB; Ginsburg, R; Hoffman, BB; Narita, H; Zera, P, 1993
)
0.94

Pharmacokinetics

In the present study we investigated the relationship between pharmacodynamic and pharmacokinetic properties of the benzothiazepine-like calcium antagonists, clentiazem and diltiazem.

ExcerptReferenceRelevance
" The terminal half-life of CLZ remained unchanged with increasing doses (13."( Single and multiple oral dose pharmacokinetics of clentiazem in normal volunteers.
Bhargava, VO; Giesing, DH; Nordbrock, EE; Shah, AK; Weir, SJ, 1993
)
0.54
" The values (mean [CV, %]) for systemic clearance, volume of distribution at steady-state, and half-life of CLZ were 63."( Pharmacokinetics of clentiazem after intravenous and oral administration in healthy subjects.
Bhargava, VO; Giesing, DH; Shah, AK; Weir, SJ, 1993
)
0.61
"In the present study we investigated the relationship between pharmacodynamic and pharmacokinetic properties of the benzothiazepine-like calcium antagonists, clentiazem and diltiazem."( Pharmacodynamics and pharmacokinetics of clentiazem and diltiazem in closed-chest anesthetized dogs.
Dumont, L; Garceau, D; Giasson, S; Homsy, W, 1995
)
0.75

Compound-Compound Interactions

ExcerptReferenceRelevance
" Diltiazem and nicardipine also exhibited a similar potentiation of the anti-platelet effect in combination with aspirin or ticlopidine."( Inhibitory effect of clentiazem (TA-3090) on platelet aggregation--alone and in combination with aspirin or ticlopidine.
Karasawa, T; Katoh, M; Odawara, A; Sasaki, Y; Tamura, K, 1994
)
0.61

Bioavailability

ExcerptReferenceRelevance
"2 L/h at 160 mg/d) and bioavailability increased (0."( Single and multiple oral dose pharmacokinetics of clentiazem in normal volunteers.
Bhargava, VO; Giesing, DH; Nordbrock, EE; Shah, AK; Weir, SJ, 1993
)
0.54
" The absolute bioavailability of PO CLZ was 45% (30."( Pharmacokinetics of clentiazem after intravenous and oral administration in healthy subjects.
Bhargava, VO; Giesing, DH; Shah, AK; Weir, SJ, 1993
)
0.61

Dosage Studied

After blood pressure was stable and greater than 160/95 mmHg with placebo for at least a 2-week observation period, oral clentiazem was administered once daily and dosage was increased stepwise from 10 to 40 mg over 10 weeks. Clent Diazem dose-response curves for both coronary dilation and negative inotropic effects were determined under control conditions.

ExcerptRelevanceReference
" After blood pressure was stable and greater than 160/95 mmHg with placebo for at least a 2-week observation period, oral clentiazem was administered once daily and dosage was increased stepwise from 10 to 40 mg over 10 weeks."( Efficacy and safety of clentiazem in patients with essential hypertension: results of an early pilot test.
Hirota, Y; Ishikawa, H; Ishikawa, K; Kagoshima, T; Katori, R; Kawakita, S; Kinoshita, M, 1991
)
0.8
"Following oral dosing of [14C]clentiazem to rats the metabolites in urine and bile were separated and their chemical structures were investigated by HPLC and GC-MS analyses."( Metabolism of clentiazem in rats.
Fukushima, T; Ito, Y; Nakamura, S; Ohashi, M; Sugawara, Y; Takaiti, O, 1993
)
0.94
"After washout and a 1-week placebo run-in period, patients received 20, 40, 80 or 120 mg/day of clentiazem tablets or placebo as a twice-daily dosage for 1 week of treatment after 1 week of dose titration."( A dose-response study of clentiazem, a chloro-derivative of diltiazem, in patients with stable angina. CAMCAT Study Group.
Garceau, D; Waters, D, 1993
)
0.81
"1) TA3090 dilates pial arteries and increases cerebral blood flow in normal brain regions in a dose-response fashion; 2) in ischemic regions compared with those in untreated animals, TA3090 results in a lesser reduction of cerebral blood flow during ischemia and in a lesser degree of hyperemia during reperfusion; 3) TA3090 is associated with less pial artery dilatation during ischemia, presumably due to improved collateral flow; and 4) the improved hemodynamic state with TA3090 is associated with significant reduction of cerebral edema and infarct size."( The effect of a new calcium antagonist, TA3090 (clentiazem), on experimental transient focal cerebral ischemia in cats.
Sakaki, T; Sasaoka, Y; Shintomi, K; Tsujimoto, S; Tsunoda, S, 1993
)
0.54
" Clentiazem dose-response curves for both coronary dilation and negative inotropic effects were determined under control conditions and in the presence of the nitric oxide (NO) synthase inhibitor, NG-nitro-L-arginine (L-NAME, 30 microM), and the cyclooxygenase inhibitor, indomethacin (10 microM)."( Coronary and cardiac sensitivity to the vasoselective benzothiazepine-like calcium antagonist, clentiazem, in experimental heart failure.
Blaise, G; Dumont, L; Jasmin, G; Tanguay, M, 1997
)
1.43
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Bioassays (28)

Assay IDTitleYearJournalArticle
AID1079942Steatosis, proven histopathologically. Value is number of references indexed. [column 'STEAT' in source]
AID1079938Chronic liver disease either proven histopathologically, or through a chonic elevation of serum amino-transferase activity after 6 months. Value is number of references indexed. [column 'CHRON' in source]
AID1079941Liver damage due to vascular disease: peliosis hepatitis, hepatic veno-occlusive disease, Budd-Chiari syndrome. Value is number of references indexed. [column 'VASC' in source]
AID1079949Proposed mechanism(s) of liver damage. [column 'MEC' in source]
AID1079936Choleostatic liver toxicity, either proven histopathologically or where the ratio of maximal ALT or AST activity above normal to that of Alkaline Phosphatase is < 2 (see ACUTE). Value is number of references indexed. [column 'CHOLE' in source]
AID1079934Highest frequency of acute liver toxicity observed during clinical trials, expressed as a percentage. [column '% AIGUE' in source]
AID1079948Times to onset, minimal and maximal, observed in the indexed observations. [column 'DELAI' in source]
AID56042In Vitro evaluation for the affinity for the diltiazem receptor in isolated guinea pig skeletal muscle microsomal preparations by inhibiting [3H]diltiazem binding1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 2. Structure-activity and drug metabolism studies leading to potent antihypertensive agents. Comparison with benzothiazepinones.
AID1079935Cytolytic liver toxicity, either proven histopathologically or where the ratio of maximal ALT or AST activity above normal to that of Alkaline Phosphatase is > 5 (see ACUTE). Value is number of references indexed. [column 'CYTOL' in source]
AID1079943Malignant tumor, proven histopathologically. Value is number of references indexed. [column 'T.MAL' in source]
AID1079931Moderate liver toxicity, defined via clinical-chemistry results: ALT or AST serum activity 6 times the normal upper limit (N) or alkaline phosphatase serum activity of 1.7 N. Value is number of references indexed. [column 'BIOL' in source]
AID1079939Cirrhosis, proven histopathologically. Value is number of references indexed. [column 'CIRRH' in source]
AID1079947Comments (NB not yet translated). [column 'COMMENTAIRES' in source]
AID1079940Granulomatous liver disease, proven histopathologically. Value is number of references indexed. [column 'GRAN' in source]
AID1079944Benign tumor, proven histopathologically. Value is number of references indexed. [column 'T.BEN' in source]
AID167822In vitro evaluation for the vasorelaxant effects in circumferential strips of potassium-depolarized rabbit aorta. (IC50 in rabbit aorta strips contracted with KCl)1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 3. Synthesis and structure-activity studies of 3-alkylbenzazepinones.
AID173376In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 0-6 h.1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 2. Structure-activity and drug metabolism studies leading to potent antihypertensive agents. Comparison with benzothiazepinones.
AID167821In vitro evaluation for the vasorelaxant effects in circumferential strips of potassium-depolarized rabbit aorta. (IC50 in rabbit aorta strips contracted with KCl1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 2. Structure-activity and drug metabolism studies leading to potent antihypertensive agents. Comparison with benzothiazepinones.
AID1079946Presence of at least one case with successful reintroduction. [column 'REINT' in source]
AID173377In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 0-6 h1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 3. Synthesis and structure-activity studies of 3-alkylbenzazepinones.
AID1079937Severe hepatitis, defined as possibly life-threatening liver failure or through clinical observations. Value is number of references indexed. [column 'MASS' in source]
AID1079933Acute liver toxicity defined via clinical observations and clear clinical-chemistry results: serum ALT or AST activity > 6 N or serum alkaline phosphatases activity > 1.7 N. This category includes cytolytic, choleostatic and mixed liver toxicity. Value is
AID173502In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 6-12 h1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 3. Synthesis and structure-activity studies of 3-alkylbenzazepinones.
AID1079932Highest frequency of moderate liver toxicity observed during clinical trials, expressed as a percentage. [column '% BIOL' in source]
AID1079945Animal toxicity known. [column 'TOXIC' in source]
AID173500In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 12-18 h1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 3. Synthesis and structure-activity studies of 3-alkylbenzazepinones.
AID173379In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 12-18 h.1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 2. Structure-activity and drug metabolism studies leading to potent antihypertensive agents. Comparison with benzothiazepinones.
AID173501In vivo evaluation for the percentage decrease in blood pressure at 135 umol/kg administered through oral route in spontaneously hypertensive rats and observed for 6-12 h.1992Journal of medicinal chemistry, Feb-21, Volume: 35, Issue:4
Benzazepinone calcium channel blockers. 2. Structure-activity and drug metabolism studies leading to potent antihypertensive agents. Comparison with benzothiazepinones.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (80)

TimeframeStudies, This Drug (%)All Drugs %
pre-19909 (11.25)18.7374
1990's69 (86.25)18.2507
2000's1 (1.25)29.6817
2010's0 (0.00)24.3611
2020's1 (1.25)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 105.56

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 very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index105.56 (24.57)
Research Supply Index4.49 (2.92)
Research Growth Index5.11 (4.65)
Search Engine Demand Index189.88 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (105.56)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials6 (7.32%)5.53%
Reviews1 (1.22%)6.00%
Case Studies0 (0.00%)4.05%
Observational0 (0.00%)0.25%
Other75 (91.46%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]