Cinnarizine

Identification

Summary

Cinnarizine is a drug used for the management of labyrinthine disorder symptoms, including vertigo, tinnitus, nystagmus, nausea, and vomiting.

Generic Name
Cinnarizine
DrugBank Accession Number
DB00568
Background

First synthesized by Janssen Pharmaceuticals in 1955, cinnarizine is an anti-histaminic drug mainly used for the control of vestibular disorders and motion sickness. Cinnarizine is a specific calcium channel blocker that primarily works on the central vestibular system to interfere with the signal transmission between vestibular apparatus of the inner ear and the vomiting centre of the hypothalamus. Cinnarizine could be also viewed as a nootropic drug because of its vasorelaxating abilities (due to calcium channel blockage), which happen mostly in brain. Combination use of cinnarizine with other nootropics, such as piracetam resulted in enhanced effect of boosting brain oxygen supply.

Type
Small Molecule
Groups
Approved, Investigational
Structure
Weight
Average: 368.524
Monoisotopic: 368.22524891
Chemical Formula
C26H28N2
Synonyms
  • 1-(Diphenylmethyl)-4-(3-phenyl-2-propenyl)piperazine
  • 1-Benzhydryl-4-cinnamylpiperazin
  • 1-Cinnamyl-4-(diphenylmethyl)piperazine
  • Cinarizina
  • Cinnarizine
  • Cinnarizinum
External IDs
  • 5-23-01-00233
  • 516 MD
  • 516-MD
  • BRN 0626121
  • R 1575
  • R 516

Pharmacology

Indication

For the treatment of vertigo/meniere's disease, nausea and vomiting, motion sickness and also useful for vestibular symptoms of other origins.

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Associated Conditions
Indication TypeIndicationCombined Product DetailsApproval LevelAge GroupPatient CharacteristicsDose Form
Management ofBalance disorders•••••••••••••••••••• •••••••• • •••••• ••••••
Treatment ofDizziness•••••••••••••••••••
Treatment ofMotion sickness•••••••••••••••••••
Used in combination to treatMotion sicknessCombination Product in combination with: Domperidone (DB01184)••••••••••••••••••
Treatment ofNausea•••••••••••••••••••
Contraindications & Blackbox Warnings
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Pharmacodynamics

Cinnarizine is an antihistamine and a calcium channel blocker. Histamines mediate a number of activities such as contraction of smooth muscle of the airways and gastrointestinal tract, vasodilatation, cardiac stimulation, secretion of gastric acid, promotion of interleukin release and chemotaxis of eosinophils and mast cells. Competitive antagonists at histamine H1 receptors may be divided into first (sedating) and second (non-sedating) generation agents. Some, such as Cinnarizine also block muscarinic acetylcholine receptors and are used as anti-emetic agents. Cinnarizine through its calcium channel blocking ability also inhibits stimulation of the vestibular system.

Mechanism of action

Cinnarizine inhibits contractions of vascular smooth muscle cells by blocking L-type and T-type voltage gated calcium channels. Cinnarizine has also been implicated in binding to dopamine D2 receptors, histamine H1 receptors, and muscarinic acetylcholine receptors.

TargetActionsOrganism
AHistamine H1 receptor
antagonist
Humans
AVoltage-dependent L-type calcium channel subunit alpha-1C
inhibitor
Humans
AVoltage-dependent L-type calcium channel subunit alpha-1D
inhibitor
Humans
AVoltage-dependent L-type calcium channel subunit alpha-1F
inhibitor
Humans
AVoltage-dependent L-type calcium channel subunit alpha-1S
inhibitor
Humans
AVoltage-dependent T-type calcium channel subunit alpha-1G
inhibitor
Humans
AVoltage-dependent T-type calcium channel subunit alpha-1H
inhibitor
Humans
AVoltage-dependent T-type calcium channel subunit alpha-1I
inhibitor
Humans
ND(2) dopamine receptor
other/unknown
Humans
UD(1) dopamine receptor
binder
Humans
UMuscarinic acetylcholine receptor
binder
Humans
Absorption

Not Available

Volume of distribution

Not Available

Protein binding

Not Available

Metabolism

Hover over products below to view reaction partners

Route of elimination

Not Available

Half-life

Not Available

Clearance

Not Available

Adverse Effects
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Toxicity

Not Available

Pathways
PathwayCategory
Cinnarizine H1-Antihistamine ActionDrug action
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
DrugInteraction
AbametapirThe serum concentration of Cinnarizine can be increased when it is combined with Abametapir.
AbataceptThe metabolism of Cinnarizine can be increased when combined with Abatacept.
AbirateroneThe serum concentration of Cinnarizine can be increased when it is combined with Abiraterone.
AbrocitinibThe metabolism of Abrocitinib can be decreased when combined with Cinnarizine.
AcarboseThe risk or severity of hypoglycemia can be increased when Cinnarizine is combined with Acarbose.
Food Interactions
Not Available

Products

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Product Ingredients
IngredientUNIICASInChI Key
Cinnarizine hydrochloride5AKM4OA6VO25332-14-3LYXJDKBTSDYXQV-RSGUCCNWSA-N
International/Other Brands
Cinazyn (Italchimici) / Cinnageron (Streuli Pharma) / Folcodal (Ivax) / Sepan (Janssen-Cilag) / Stugeron (Janssen) / Stugeron Forte (Janssen) / Toliman (Scharper)
Over the Counter Products
NameDosageStrengthRouteLabellerMarketing StartMarketing EndRegionImage
AXCEL CINNARIZINE TABLETS 25 mgTablet25 mgOralKOTRA PHARMA MARKETING1999-05-17Not applicableSingapore flag
CELENID TABLET 25 mgTablet25 mgOralMEDISPEC RENAISSANCE PTE. LTD.1991-08-21Not applicableSingapore flag
CINNA TABLET 25 mgTablet25 mgOralYUNG SHIN PHARMACEUTICAL (SINGAPORE) PTE LTD1995-12-16Not applicableSingapore flag
CINNAR TABLET 25 mgTablet25 mgOralATLANTIC PHARMACEUTICAL (S) PTE LTD1997-06-19Not applicableSingapore flag
CINNARON 25 TABLET 25 mgTablet25 mgOralGOLDPLUS UNIVERSAL PTE LTD1989-05-22Not applicableSingapore flag
Mixture Products
NameIngredientsDosageRouteLabellerMarketing StartMarketing EndRegionImage
Arlevert 20 mg/40 mg TablettenCinnarizine (20 mg) + Dimenhydrinate (40 mg)TabletOralHennig Arzneimittel Gmb H & Co Kg2007-09-06Not applicableAustria flag

Categories

ATC Codes
N07CA52 — Cinnarizine, combinationsN07CA02 — Cinnarizine
Drug Categories
Classification
Not classified
Affected organisms
  • Humans and other mammals

Chemical Identifiers

UNII
3DI2E1X18L
CAS number
298-57-7
InChI Key
DERZBLKQOCDDDZ-JLHYYAGUSA-N
InChI
InChI=1S/C26H28N2/c1-4-11-23(12-5-1)13-10-18-27-19-21-28(22-20-27)26(24-14-6-2-7-15-24)25-16-8-3-9-17-25/h1-17,26H,18-22H2/b13-10+
IUPAC Name
1-(diphenylmethyl)-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine
SMILES
C(\C=C\C1=CC=CC=C1)N1CCN(CC1)C(C1=CC=CC=C1)C1=CC=CC=C1

References

Synthesis Reference

Janssen, P.A.J.; U.S. Patent 2,882,271; April 14, 1959; assigned to Laboratoria Pharmaceutica Dr. C. Janssen, Belgium.

General References
Not Available
KEGG Drug
D01295
PubChem Compound
2761
PubChem Substance
46506769
ChemSpider
1264793
BindingDB
50017657
RxNav
2549
ChEBI
31403
ChEMBL
CHEMBL43064
ZINC
ZINC000019632891
Therapeutic Targets Database
DAP000325
PharmGKB
PA164749342
PDBe Ligand
N90
Wikipedia
Cinnarizine
PDB Entries
7uhf

Clinical Trials

Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns
Not AvailableCompletedTreatmentEndocrine hypertension / Primary Aldosteronism1somestatusstop reasonjust information to hide
Not AvailableUnknown StatusPreventionSimulator Sickness1somestatusstop reasonjust information to hide
4CompletedTreatmentMethamphetamine-induced Psychosis1somestatusstop reasonjust information to hide
4RecruitingTreatmentDisorders of the Autonomic Nervous System / Vertigo1somestatusstop reasonjust information to hide

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
FormRouteStrength
TabletOral
TabletOral75.00 mg
Capsule, liquid filledOral75 mg
TabletOral75.0 mg
Tablet, film coatedOral25 MG
TabletOral75 mg
Capsule100 MG
Capsule75 MG
Solution / dropsOral75 MG/ML
SuspensionOral75 mg
Capsule
Solution / dropsOral
TabletOral
TabletOral75.000 mg
Capsule25 mg
TabletOral25 mg
Tablet, coatedOral25 mg
Prices
Not Available
Patents
Not Available

Properties

State
Solid
Experimental Properties
PropertyValueSource
water solubility750 mg/L (at 25 °C)YALKOWSKY,SH & DANNENFELSER,RM (1992)
logP5.77BIOBYTE (1995)
Predicted Properties
PropertyValueSource
logP5.88Chemaxon
pKa (Strongest Basic)8.1Chemaxon
Physiological Charge1Chemaxon
Hydrogen Acceptor Count2Chemaxon
Hydrogen Donor Count0Chemaxon
Polar Surface Area6.48 Å2Chemaxon
Rotatable Bond Count6Chemaxon
Refractivity119.86 m3·mol-1Chemaxon
Polarizability43.97 Å3Chemaxon
Number of Rings4Chemaxon
Bioavailability1Chemaxon
Rule of FiveNoChemaxon
Ghose FilterNoChemaxon
Veber's RuleYesChemaxon
MDDR-like RuleYesChemaxon
Predicted ADMET Features
PropertyValueProbability
Human Intestinal Absorption+0.9506
Blood Brain Barrier+0.977
Caco-2 permeable+0.6409
P-glycoprotein substrateSubstrate0.7107
P-glycoprotein inhibitor IInhibitor0.7461
P-glycoprotein inhibitor IINon-inhibitor0.8398
Renal organic cation transporterInhibitor0.7902
CYP450 2C9 substrateNon-substrate0.8549
CYP450 2D6 substrateSubstrate0.8919
CYP450 3A4 substrateNon-substrate0.7558
CYP450 1A2 substrateInhibitor0.7732
CYP450 2C9 inhibitorNon-inhibitor0.9488
CYP450 2D6 inhibitorInhibitor0.8931
CYP450 2C19 inhibitorNon-inhibitor0.9026
CYP450 3A4 inhibitorNon-inhibitor0.9346
CYP450 inhibitory promiscuityHigh CYP Inhibitory Promiscuity0.5
Ames testNon AMES toxic0.9279
CarcinogenicityNon-carcinogens0.9496
BiodegradationNot ready biodegradable0.9968
Rat acute toxicity2.0618 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Strong inhibitor0.5724
hERG inhibition (predictor II)Non-inhibitor0.524
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397)

Spectra

Mass Spec (NIST)
Not Available
Spectra
SpectrumSpectrum TypeSplash Key
Predicted MS/MS Spectrum - 10V, Positive (Annotated)Predicted LC-MS/MSsplash10-014i-0109000000-6aafd7aead713e954b51
Predicted MS/MS Spectrum - 10V, Negative (Annotated)Predicted LC-MS/MSsplash10-014i-0029000000-a8411e2cfb4c21265d14
Predicted MS/MS Spectrum - 20V, Positive (Annotated)Predicted LC-MS/MSsplash10-014i-0906000000-ef5571072f8d2c31a967
Predicted MS/MS Spectrum - 20V, Negative (Annotated)Predicted LC-MS/MSsplash10-014i-0009000000-961c386872609accb3c7
Predicted MS/MS Spectrum - 40V, Positive (Annotated)Predicted LC-MS/MSsplash10-00kf-9635000000-12b340bddf8bb5e19344
Predicted MS/MS Spectrum - 40V, Negative (Annotated)Predicted LC-MS/MSsplash10-01b9-1911000000-e220e47a7de32a02498d
Predicted 1H NMR Spectrum1D NMRNot Applicable
Predicted 13C NMR Spectrum1D NMRNot Applicable
Chromatographic Properties
Collision Cross Sections (CCS)
AdductCCS Value (Å2)Source typeSource
[M-H]-216.6330918
predicted
DarkChem Lite v0.1.0
[M-H]-194.14165
predicted
DeepCCS 1.0 (2019)
[M+H]+217.1474918
predicted
DarkChem Lite v0.1.0
[M+H]+196.49965
predicted
DeepCCS 1.0 (2019)
[M+Na]+216.6007918
predicted
DarkChem Lite v0.1.0
[M+Na]+203.15666
predicted
DeepCCS 1.0 (2019)

Targets

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Use our structured and evidence-based datasets to unlock new
insights and accelerate drug research.
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Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Antagonist
General Function
G-protein-coupled receptor for histamine, a biogenic amine that functions as an immune modulator and a neurotransmitter (PubMed:33828102, PubMed:8280179). Through the H1 receptor, histamine mediates the contraction of smooth muscles and increases capillary permeability due to contraction of terminal venules. Also mediates neurotransmission in the central nervous system and thereby regulates circadian rhythms, emotional and locomotor activities as well as cognitive functions (By similarity)
Specific Function
G protein-coupled serotonin receptor activity
Gene Name
HRH1
Uniprot ID
P35367
Uniprot Name
Histamine H1 receptor
Molecular Weight
55783.61 Da
References
  1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [Article]
  2. Paton DM, Webster DR: Clinical pharmacokinetics of H1-receptor antagonists (the antihistamines). Clin Pharmacokinet. 1985 Nov-Dec;10(6):477-97. [Article]
  3. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Pore-forming, alpha-1C subunit of the voltage-gated calcium channel that gives rise to L-type calcium currents (PubMed:11741969, PubMed:12176756, PubMed:12181424, PubMed:15454078, PubMed:15863612, PubMed:16299511, PubMed:17071743, PubMed:17224476, PubMed:20953164, PubMed:23677916, PubMed:24728418, PubMed:26253506, PubMed:27218670, PubMed:29078335, PubMed:29742403, PubMed:30023270, PubMed:30172029, PubMed:34163037, PubMed:7737988, PubMed:8099908, PubMed:8392192, PubMed:9013606, PubMed:9087614, PubMed:9607315). Mediates influx of calcium ions into the cytoplasm, and thereby triggers calcium release from the sarcoplasm (By similarity). Plays an important role in excitation-contraction coupling in the heart. Required for normal heart development and normal regulation of heart rhythm (PubMed:15454078, PubMed:15863612, PubMed:17224476, PubMed:24728418, PubMed:26253506). Required for normal contraction of smooth muscle cells in blood vessels and in the intestine. Essential for normal blood pressure regulation via its role in the contraction of arterial smooth muscle cells (PubMed:28119464). Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group (Probable)
Specific Function
alpha-actinin binding
Gene Name
CACNA1C
Uniprot ID
Q13936
Uniprot Name
Voltage-dependent L-type calcium channel subunit alpha-1C
Molecular Weight
248974.1 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1D gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, and by benzothiazepines
Specific Function
alpha-actinin binding
Gene Name
CACNA1D
Uniprot ID
Q01668
Uniprot Name
Voltage-dependent L-type calcium channel subunit alpha-1D
Molecular Weight
245138.75 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1F gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, and by benzothiazepines. Activates at more negative voltages and does not undergo calcium-dependent inactivation (CDI), due to incoming calcium ions, during depolarization
Specific Function
high voltage-gated calcium channel activity
Gene Name
CACNA1F
Uniprot ID
O60840
Uniprot Name
Voltage-dependent L-type calcium channel subunit alpha-1F
Molecular Weight
220675.9 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Pore-forming, alpha-1S subunit of the voltage-gated calcium channel that gives rise to L-type calcium currents in skeletal muscle. Calcium channels containing the alpha-1S subunit play an important role in excitation-contraction coupling in skeletal muscle via their interaction with RYR1, which triggers Ca(2+) release from the sarcoplasmic reticulum and ultimately results in muscle contraction. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group
Specific Function
calmodulin binding
Gene Name
CACNA1S
Uniprot ID
Q13698
Uniprot Name
Voltage-dependent L-type calcium channel subunit alpha-1S
Molecular Weight
212348.1 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1G gives rise to T-type calcium currents. T-type calcium channels belong to the 'low-voltage activated (LVA)' group and are strongly blocked by mibefradil. A particularity of this type of channel is an opening at quite negative potentials and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes.
Specific Function
high voltage-gated calcium channel activity
Gene Name
CACNA1G
Uniprot ID
O43497
Uniprot Name
Voltage-dependent T-type calcium channel subunit alpha-1G
Molecular Weight
262468.62 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Voltage-sensitive calcium channel that gives rise to T-type calcium currents. T-type calcium channels belong to the 'low-voltage activated (LVA)' group. A particularity of this type of channel is an opening at quite negative potentials, and a voltage-dependent inactivation (PubMed:27149520, PubMed:9670923, PubMed:9930755). T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle (Probable). They may also be involved in the modulation of firing patterns of neurons (PubMed:15048902). In the adrenal zona glomerulosa, participates in the signaling pathway leading to aldosterone production in response to either AGT/angiotensin II, or hyperkalemia (PubMed:25907736, PubMed:27729216)
Specific Function
high voltage-gated calcium channel activity
Gene Name
CACNA1H
Uniprot ID
O95180
Uniprot Name
Voltage-dependent T-type calcium channel subunit alpha-1H
Molecular Weight
259160.2 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Inhibitor
General Function
Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. This channel gives rise to T-type calcium currents. T-type calcium channels belong to the 'low-voltage activated (LVA)' group and are strongly blocked by nickel and mibefradil. A particularity of this type of channels is an opening at quite negative potentials, and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes. Gates in voltage ranges similar to, but higher than alpha 1G or alpha 1H (By similarity)
Specific Function
high voltage-gated calcium channel activity
Gene Name
CACNA1I
Uniprot ID
Q9P0X4
Uniprot Name
Voltage-dependent T-type calcium channel subunit alpha-1I
Molecular Weight
245100.8 Da
References
  1. Singh BN: The mechanism of action of calcium antagonists relative to their clinical applications. Br J Clin Pharmacol. 1986;21 Suppl 2:109S-121S. [Article]
  2. Cohen CJ, Spires S, Van Skiver D: Block of T-type Ca channels in guinea pig atrial cells by antiarrhythmic agents and Ca channel antagonists. J Gen Physiol. 1992 Oct;100(4):703-28. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
No
Actions
Other/unknown
General Function
Dopamine receptor whose activity is mediated by G proteins which inhibit adenylyl cyclase (PubMed:21645528). Positively regulates postnatal regression of retinal hyaloid vessels via suppression of VEGFR2/KDR activity, downstream of OPN5 (By similarity)
Specific Function
dopamine binding
Gene Name
DRD2
Uniprot ID
P14416
Uniprot Name
D(2) dopamine receptor
Molecular Weight
50618.91 Da
References
  1. Brucke T, Wober C, Podreka I, Wober-Bingol C, Asenbaum S, Aull S, Wenger S, Ilieva D, Harasko-van der Meer C, Wessely P, et al.: D2 receptor blockade by flunarizine and cinnarizine explains extrapyramidal side effects. A SPECT study. J Cereb Blood Flow Metab. 1995 May;15(3):513-8. [Article]
  2. Kuzuhara S: [Drug-induced parkinsonism]. Nihon Rinsho. 1997 Jan;55(1):112-7. [Article]
  3. doi:10.1007/s00415-006-3004-8 [Link]
Kind
Protein group
Organism
Humans
Pharmacological action
Unknown
Actions
Binder
General Function
Dopamine receptor whose activity is mediated by G proteins which activate adenylyl cyclase
Specific Function
arrestin family protein binding

Components:
References
  1. Nasu R, Matsuo H, Takanaga H, Ohtani H, Sawada Y: Quantitative prediction of catalepsy induced by amoxapine, cinnarizine and cyclophosphamide in mice. Biopharm Drug Dispos. 2000 May;21(4):129-38. [Article]
Kind
Protein group
Organism
Humans
Pharmacological action
Unknown
Actions
Binder
General Function
The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover
Specific Function
G protein-coupled acetylcholine receptor activity

Components:
References
  1. Nasu R, Matsuo H, Takanaga H, Ohtani H, Sawada Y: Quantitative prediction of catalepsy induced by amoxapine, cinnarizine and cyclophosphamide in mice. Biopharm Drug Dispos. 2000 May;21(4):129-38. [Article]

Enzymes

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of fatty acids, steroids and retinoids (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:18698000, PubMed:19965576, PubMed:20972997, PubMed:21289075, PubMed:21576599). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:19965576, PubMed:20972997). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 20-hydroxyeicosatetraenoic acid ethanolamide (20-HETE-EA) and 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:18698000, PubMed:21289075). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Catalyzes the oxidative transformations of all-trans retinol to all-trans retinal, a precursor for the active form all-trans-retinoic acid (PubMed:10681376). Also involved in the oxidative metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants
Specific Function
anandamide 11,12 epoxidase activity
Gene Name
CYP2D6
Uniprot ID
P10635
Uniprot Name
Cytochrome P450 2D6
Molecular Weight
55768.94 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Narimatsu S, Kariya S, Isozaki S, Ohmori S, Kitada M, Hosokawa S, Masubuchi Y, Suzuki T: Involvement of CYP2D6 in oxidative metabolism of cinnarizine and flunarizine in human liver microsomes. Biochem Biophys Res Commun. 1993 Jun 30;193(3):1262-8. doi: 10.1006/bbrc.1993.1761. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids and steroids (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:12865317, PubMed:15766564, PubMed:19965576, PubMed:21576599, PubMed:7574697, PubMed:9435160, PubMed:9866708). Catalyzes the epoxidation of double bonds of polyunsaturated fatty acids (PUFA) (PubMed:15766564, PubMed:19965576, PubMed:7574697, PubMed:9866708). Catalyzes the hydroxylation of carbon-hydrogen bonds. Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). Exhibits low catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes bisallylic hydroxylation and hydroxylation with double-bond migration of polyunsaturated fatty acids (PUFA) (PubMed:9435160, PubMed:9866708). Also metabolizes plant monoterpenes such as limonene. Oxygenates (R)- and (S)-limonene to produce carveol and perillyl alcohol (PubMed:11950794). Contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan (PubMed:25994031)
Specific Function
(R)-limonene 6-monooxygenase activity
Gene Name
CYP2C9
Uniprot ID
P11712
Uniprot Name
Cytochrome P450 2C9
Molecular Weight
55627.365 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Kariya S, Isozaki S, Uchino K, Suzuki T, Narimatsu S: Oxidative metabolism of flunarizine and cinnarizine by microsomes from B-lymphoblastoid cell lines expressing human cytochrome P450 enzymes. Biol Pharm Bull. 1996 Nov;19(11):1511-4. doi: 10.1248/bpb.19.1511. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:19965576, PubMed:9435160). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:11555828, PubMed:12865317). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2 (PubMed:11555828, PubMed:12865317). Metabolizes cholesterol toward 25-hydroxycholesterol, a physiological regulator of cellular cholesterol homeostasis (PubMed:21576599). May act as a major enzyme for all-trans retinoic acid biosynthesis in the liver. Catalyzes two successive oxidative transformation of all-trans retinol to all-trans retinal and then to the active form all-trans retinoic acid (PubMed:10681376). Primarily catalyzes stereoselective epoxidation of the last double bond of polyunsaturated fatty acids (PUFA), displaying a strong preference for the (R,S) stereoisomer (PubMed:19965576). Catalyzes bisallylic hydroxylation and omega-1 hydroxylation of PUFA (PubMed:9435160). May also participate in eicosanoids metabolism by converting hydroperoxide species into oxo metabolites (lipoxygenase-like reaction, NADPH-independent) (PubMed:21068195). Plays a role in the oxidative metabolism of xenobiotics. Catalyzes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin (PubMed:14725854). Metabolizes caffeine via N3-demethylation (Probable)
Specific Function
aromatase activity
Gene Name
CYP1A2
Uniprot ID
P05177
Uniprot Name
Cytochrome P450 1A2
Molecular Weight
58406.915 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Kariya S, Isozaki S, Uchino K, Suzuki T, Narimatsu S: Oxidative metabolism of flunarizine and cinnarizine by microsomes from B-lymphoblastoid cell lines expressing human cytochrome P450 enzymes. Biol Pharm Bull. 1996 Nov;19(11):1511-4. doi: 10.1248/bpb.19.1511. [Article]
  3. Zhou SF, Yang LP, Zhou ZW, Liu YH, Chan E: Insights into the substrate specificity, inhibitors, regulation, and polymorphisms and the clinical impact of human cytochrome P450 1A2. AAPS J. 2009 Sep;11(3):481-94. doi: 10.1208/s12248-009-9127-y. Epub 2009 Jul 10. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of endocannabinoids and steroids (PubMed:12865317, PubMed:21289075). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the epoxidation of double bonds of arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:21289075). Hydroxylates steroid hormones, including testosterone at C-16 and estrogens at C-2 (PubMed:12865317, PubMed:21289075). Plays a role in the oxidative metabolism of xenobiotics, including plant lipids and drugs (PubMed:11695850, PubMed:22909231). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850)
Specific Function
anandamide 11,12 epoxidase activity
Gene Name
CYP2B6
Uniprot ID
P20813
Uniprot Name
Cytochrome P450 2B6
Molecular Weight
56277.81 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Kariya S, Isozaki S, Uchino K, Suzuki T, Narimatsu S: Oxidative metabolism of flunarizine and cinnarizine by microsomes from B-lymphoblastoid cell lines expressing human cytochrome P450 enzymes. Biol Pharm Bull. 1996 Nov;19(11):1511-4. doi: 10.1248/bpb.19.1511. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
Exhibits a high coumarin 7-hydroxylase activity. Can act in the hydroxylation of the anti-cancer drugs cyclophosphamide and ifosphamide. Competent in the metabolic activation of aflatoxin B1. Constitutes the major nicotine C-oxidase. Acts as a 1,4-cineole 2-exo-monooxygenase. Possesses low phenacetin O-deethylation activity
Specific Function
arachidonic acid epoxygenase activity
Gene Name
CYP2A6
Uniprot ID
P11509
Uniprot Name
Cytochrome P450 2A6
Molecular Weight
56517.005 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Kariya S, Isozaki S, Uchino K, Suzuki T, Narimatsu S: Oxidative metabolism of flunarizine and cinnarizine by microsomes from B-lymphoblastoid cell lines expressing human cytochrome P450 enzymes. Biol Pharm Bull. 1996 Nov;19(11):1511-4. doi: 10.1248/bpb.19.1511. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of various endogenous substrates, including fatty acids, steroid hormones and vitamins (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15041462, PubMed:15805301, PubMed:18577768, PubMed:19965576, PubMed:20972997). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase) (PubMed:10681376, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15041462, PubMed:15805301, PubMed:18577768, PubMed:19965576, PubMed:20972997). Catalyzes the hydroxylation of carbon-hydrogen bonds. Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C15-alpha and C16-alpha positions (PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15805301). Displays different regioselectivities for polyunsaturated fatty acids (PUFA) hydroxylation (PubMed:15041462, PubMed:18577768). Catalyzes the epoxidation of double bonds of certain PUFA (PubMed:15041462, PubMed:19965576, PubMed:20972997). Converts arachidonic acid toward epoxyeicosatrienoic acid (EET) regioisomers, 8,9-, 11,12-, and 14,15-EET, that function as lipid mediators in the vascular system (PubMed:20972997). Displays an absolute stereoselectivity in the epoxidation of eicosapentaenoic acid (EPA) producing the 17(R),18(S) enantiomer (PubMed:15041462). May play an important role in all-trans retinoic acid biosynthesis in extrahepatic tissues. Catalyzes two successive oxidative transformation of all-trans retinol to all-trans retinal and then to the active form all-trans retinoic acid (PubMed:10681376). May also participate in eicosanoids metabolism by converting hydroperoxide species into oxo metabolites (lipoxygenase-like reaction, NADPH-independent) (PubMed:21068195)
Specific Function
arachidonic acid monooxygenase activity
Gene Name
CYP1A1
Uniprot ID
P04798
Uniprot Name
Cytochrome P450 1A1
Molecular Weight
58164.815 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [Article]
  2. Kariya S, Isozaki S, Uchino K, Suzuki T, Narimatsu S: Oxidative metabolism of flunarizine and cinnarizine by microsomes from B-lymphoblastoid cell lines expressing human cytochrome P450 enzymes. Biol Pharm Bull. 1996 Nov;19(11):1511-4. doi: 10.1248/bpb.19.1511. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
No
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of sterols, steroid hormones, retinoids and fatty acids (PubMed:10681376, PubMed:11093772, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:19965576, PubMed:20702771, PubMed:21490593, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:21490593, PubMed:21576599, PubMed:2732228). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C-16 position (PubMed:11555828, PubMed:12865317, PubMed:14559847). Plays a role in the metabolism of androgens, particularly in oxidative deactivation of testosterone (PubMed:15373842, PubMed:15764715, PubMed:22773874, PubMed:2732228). Metabolizes testosterone to less biologically active 2beta- and 6beta-hydroxytestosterones (PubMed:15373842, PubMed:15764715, PubMed:2732228). Contributes to the formation of hydroxycholesterols (oxysterols), particularly A-ring hydroxylated cholesterol at the C-4beta position, and side chain hydroxylated cholesterol at the C-25 position, likely contributing to cholesterol degradation and bile acid biosynthesis (PubMed:21576599). Catalyzes bisallylic hydroxylation of polyunsaturated fatty acids (PUFA) (PubMed:9435160). Catalyzes the epoxidation of double bonds of PUFA with a preference for the last double bond (PubMed:19965576). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:20702771). Plays a role in the metabolism of retinoids. Displays high catalytic activity for oxidation of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes atRA toward 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Responsible for oxidative metabolism of xenobiotics. Acts as a 2-exo-monooxygenase for plant lipid 1,8-cineole (eucalyptol) (PubMed:11159812). Metabolizes the majority of the administered drugs. Catalyzes sulfoxidation of the anthelmintics albendazole and fenbendazole (PubMed:10759686). Hydroxylates antimalarial drug quinine (PubMed:8968357). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850). Also involved in vitamin D catabolism and calcium homeostasis. Catalyzes the inactivation of the active hormone calcitriol (1-alpha,25-dihydroxyvitamin D(3)) (PubMed:29461981)
Specific Function
1,8-cineole 2-exo-monooxygenase activity
Gene Name
CYP3A4
Uniprot ID
P08684
Uniprot Name
Cytochrome P450 3A4
Molecular Weight
57342.67 Da
References
  1. Uesawa Y, Takeuchi T, Mohri K: Integrated analysis on the physicochemical properties of dihydropyridine calcium channel blockers in grapefruit juice interactions. Curr Pharm Biotechnol. 2012 Jul;13(9):1705-17. [Article]

Carriers

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Regulator
General Function
Binds water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs (Probable). Its main function is the regulation of the colloidal osmotic pressure of blood (Probable). Major zinc transporter in plasma, typically binds about 80% of all plasma zinc (PubMed:19021548). Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity). Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity). Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli (PubMed:6234017). Does not prevent iron uptake by the bacterial siderophore aerobactin (PubMed:6234017)
Specific Function
antioxidant activity
Gene Name
ALB
Uniprot ID
P02768
Uniprot Name
Albumin
Molecular Weight
69365.94 Da
References
  1. Martinez-Gomez MA, Carril-Aviles MM, Sagrado S, Villanueva-Camanas RM, Medina-Hernandez MJ: Characterization of antihistamine-human serum protein interactions by capillary electrophoresis. J Chromatogr A. 2007 Apr 20;1147(2):261-9. doi: 10.1016/j.chroma.2007.02.054. Epub 2007 Feb 22. [Article]

Drug created at June 13, 2005 13:24 / Updated at October 21, 2024 12:36