Carbidopa
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Identification
- Summary
Carbidopa is a dopa decarboxylase inhibitor used in combination with levodopa for the symptomatic treatment of idiopathic Parkinson disease and other conditions associated with parkinsonian symptoms.
- Brand Names
- Crexont, Dhivy, Duodopa, Duopa, Lodosyn, Parcopa, Rytary, Sinemet, Stalevo
- Generic Name
- Carbidopa
- DrugBank Accession Number
- DB00190
- Background
Carbidopa presents a chemical denomination of N-amino-alpha-methyl-3-hydroxy-L-tyrosine monohydrate. It potently inhibits aromatic amino acid decarboxylase (DDC) and due to its chemical properties, it does not cross the blood-brain barrier. Due to its activity, carbidopa is always administered concomitantly with levodopa. An individual formulation containing solely carbidopa was generated to treat nausea in patients where the combination therapy levodopa/carbidopa is not efficient reducing nausea.9
The first approved product by the FDA containing only carbidopa was developed by Amerigens Pharmaceuticals Ltd and approved on 2014.10 On the other hand, the combination treatment of carbidopa/levodopa was originally developed by Watson Labs but the historical information by the FDA brings back to the approval of this combination therapy developed by Mayne Pharma in 1992.11
- Type
- Small Molecule
- Groups
- Approved
- Structure
- Weight
- Average: 226.2292
Monoisotopic: 226.095356946 - Chemical Formula
- C10H14N2O4
- Synonyms
- (-)-L-alpha-Hydrazino-3,4-dihydroxy-alpha-methylhydrocinnamic acid monohydrate
- (S)-(−)-carbidopa
- (S)-carbidopa
- (αS)-α-hydrazino-3,4-dihydroxy-α-methylbenzenepropanoic acid
- Carbidopa
- Carbidopa (anhydrous)
- Carbidopa anhydrous
- Carbidopum
- L-3-(3,4-dihydroxyphenyl)-2-methyl-2-hydrazinopropionic acid
- L-α-methyldopahydrazine
- External IDs
- MK-486
Pharmacology
- Indication
Carbidopa is indicated with levodopa for the treatment of symptoms of idiopathic Parkinson disease, postencephalitic parkinsonism and symptomatic parkinsonism followed by carbon monoxide or manganese intoxication.Label
The combination therapy is administered for the reduction of levodopa-driven nausea and vomiting.Label
The product of carbidopa should be used in patients where the combination therapy of carbidopa/levodopa provide less than the adequate daily dosage.Label
As well carbidopa can be used in patients where the dosages of carbidopa and levodopa require individual titration.Label
Reduce drug development failure ratesBuild, train, & validate machine-learning modelswith evidence-based and structured datasets.Build, train, & validate predictive machine-learning models with structured datasets.- Associated Conditions
Indication Type Indication Combined Product Details Approval Level Age Group Patient Characteristics Dose Form Used in combination to manage Parkinson's disease Combination Product in combination with: Levodopa (DB01235) •••••••••••• Used in combination to treat Postencephalitic parkinsonism Combination Product in combination with: Levodopa (DB01235) •••••••••••• Used in combination to treat Symptomatic parkinson disease Combination Product in combination with: Levodopa (DB01235) •••••••••••• •••••• •••••••• ••••••••••••• ••••••••• •••••••••••• Symptomatic treatment of Levodopa-driven nausea and vomiting •••••••••••• •••••• - Contraindications & Blackbox Warnings
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- Pharmacodynamics
When mixed with levodopa, carbidopa inhibits the peripheral conversion of levodopa to dopamine and the decarboxylation of oxitriptan to serotonin by aromatic L-amino acid decarboxylase. This results in an increased amount of levodopa and oxitriptan available for transport to the central nervous system. Carbidopa also inhibits the metabolism of levodopa in the GI tract, thus, increasing the bioavailability of levodopa.4
The presence of additional units of circulating levodopa can increase the effectiveness of the still functional dopaminergic neurons and it has been shown to alleviate symptoms for a time. The action of carbidopa is very important as levodopa is able to cross the blood-brain barrier while dopamine cannot.8 Hence the administration of carbidopa is essential to prevent the transformation of external levodopa to dopamine before reaching the main action site in the brain.
The coadministration of carbidopa with levodopa has been shown to increase the half-life of levodopa more than 1.5 times while increasing the plasma level and decreasing clearance. The combination therapy has also shown an increase of the recovery of levodopa in urine instead of dopamine which proves a reduced metabolism. This effect has been highly observed by a significant reduction in levodopa requirements and a significant reduction in the presence of side effects such as nausea. It has been observed that the effect of carbidopa is not dose-dependent.9
- Mechanism of action
Carbidopa is an inhibitor of the DDC which in order, inhibits the peripheral metabolism of levodopa.3 DDC is very important in the biosynthesis of L-tryptophan to serotonin and the modification of L-DOPA to dopamine.4
DDC can be found in the body periphery and in the blood-brain barrier.4 The action of carbidopa is focused on peripheral DDC as this drug cannot cross the blood-brain barrier.8 Hence, it will prevent the metabolism of levodopa in the periphery but it will not have any activity on the generation of dopamine in the brain.
Target Actions Organism AAromatic-L-amino-acid decarboxylase inhibitorHumans - Absorption
When levodopa/carbidopa is administered orally, 40-70% of the administered dose is absorbed.12 Once absorbed, carbidopa shows bioavailability of 58%.5 A maximum concentration of 0.085 mcg/ml was achieved after 143 min with an AUC of 19.28 mcg.min/ml.6
- Volume of distribution
The volume of distribution reported for the combination therapy of carbidopa/levodopa is of 3.6 L/kg.7 However, carbidopa is widely distributed in the tissues, except in the brain.12 After one hour, carbidopa is found mainly in the kidney, lungs, small intestine and liver.1
- Protein binding
It is widely accepted that the protein binding of carbidopa is 76%. However, more studies are required or the presentation of the source of this information.
- Metabolism
The loss of the hydrazine functional group (probably as molecular nitrogen) represents the major metabolic pathway for carbidopa. There are several metabolites of carbidopa metabolism including 3-(3,4-dihydroxyphenyl)-2-methylpropionic acid, 3-(4-hydroxy-3-methoxyphenyl)-2-methylpropionic acid, 3-(3-hydroxyphenyl)-2-methylpropionic acid, 3-(4-hydroxy-3-methoxyphenyl)-2-methyllactic acid, 3-(3-hydroxyphenyl)-2-methyllactic acid, and 3,4-dihydroxyphenylacetone (1,2).1
Hover over products below to view reaction partners
- Route of elimination
In animal studies, 66% of the administered dose of carbidopa was eliminated via the urine while 11% was found in feces. These studies were performed in humans and it was observed a urine excretion covering 50% of the administered dose.1
- Half-life
The reported half-life of carbidopa is of approximately 107 minutes.6
- Clearance
The reported clearance rate for the combination therapy of levodopa/carbidopa is 51.7 L/h.7
- Adverse Effects
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- Toxicity
The LD50 of carbidopa is reported to be in the rat of 4810 mg/kg.MSDS In animal studies, carbidopa showed no incidences on neoplasia and showed no effect on the fertility status and development.Label
No reports of overdosage have been registered with the carbidopa-only product. In the event of overdosage, immediate gastric lavage is recommended as well as intravenous fluid administration. Continuous electrocardiographic monitoring is required.Label
- Pathways
- Not Available
- 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.
Drug Interaction Integrate drug-drug
interactions in your softwareAbacavir Carbidopa may decrease the excretion rate of Abacavir which could result in a higher serum level. Acebutolol The risk or severity of hypotension can be increased when Carbidopa is combined with Acebutolol. Aceclofenac Aceclofenac may decrease the excretion rate of Carbidopa which could result in a higher serum level. Acemetacin Acemetacin may decrease the excretion rate of Carbidopa which could result in a higher serum level. Acetaminophen Carbidopa may decrease the excretion rate of Acetaminophen which could result in a higher serum level. - Food Interactions
- No interactions found.
Products
- Drug product information from 10+ global regionsOur datasets provide approved product information including:dosage, form, labeller, route of administration, and marketing period.Access drug product information from over 10 global regions.
- Product Ingredients
Ingredient UNII CAS InChI Key Carbidopa hydrate MNX7R8C5VO 38821-49-7 QTAOMKOIBXZKND-PPHPATTJSA-N - Product Images
- Brand Name Prescription Products
- Generic Prescription Products
Name Dosage Strength Route Labeller Marketing Start Marketing End Region Image Carbidopa Tablet 25 mg/1 Oral Zydus Pharmaceuticals USA Inc. 2018-09-06 Not applicable US Carbidopa Tablet 25 mg/1 Oral bryant ranch prepack 2014-03-10 2023-09-30 US Carbidopa Tablet 25 mg/1 Oral ANI Pharmaceuticals, Inc. 2014-03-10 2023-09-30 US Carbidopa Tablet 25 mg/1 Oral NorthStar Rx LLC 2019-10-21 Not applicable US Carbidopa Tablet 25 mg/1 Oral Aurobindo Pharma Limited 2019-10-21 Not applicable US - Mixture Products
Name Ingredients Dosage Route Labeller Marketing Start Marketing End Region Image Aa-levocarb CR Carbidopa (50 mg) + Levodopa (200 mg) Tablet, extended release Oral Aa Pharma Inc 2003-11-13 Not applicable Canada Aa-levocarb CR Carbidopa (25 mg) + Levodopa (100 mg) Tablet, extended release Oral Aa Pharma Inc 2009-02-04 Not applicable Canada ANTIPAR 100 MG/ 25 MG/ 200 MG FİLM TABLET, 100 ADET Carbidopa hydrate (25 mg) + Entacapone (200 mg) + Levodopa (100 mg) Tablet, film coated Oral İLKO İLAÇ SAN.VE TİC. A.Ş. 2017-08-11 Not applicable Turkey ANTIPAR 125 MG/ 31.25 MG/ 200 MG FİLM TABLET, 100 ADET Carbidopa hydrate (31.25 mg) + Entacapone (200 mg) + Levodopa (125 mg) Tablet, film coated Oral İLKO İLAÇ SAN.VE TİC. A.Ş. 2017-08-11 Not applicable Turkey ANTİPAR 150 MG/37.5 MG/200 MG FİLM TABLET, 100 ADET Carbidopa hydrate (37.5 mg) + Entacapone (200 mg) + Levodopa (150 mg) Tablet, film coated Oral İLKO İLAÇ SAN.VE TİC. A.Ş. 2017-07-26 Not applicable Turkey
Categories
- Drug Categories
- Amines
- Anti-Dyskinesia Agents
- Anti-Parkinson Drugs
- Aromatic Amino Acid Decarboxylase Inhibitors
- Aromatic L-amino Acid Decarboxylase Inhibitors
- Benzene Derivatives
- Biogenic Amines
- Biogenic Monoamines
- Catecholamines
- Catechols
- Central Nervous System Agents
- Drugs that are Mainly Renally Excreted
- Enzyme Inhibitors
- Hydrazines
- Phenols
- Chemical TaxonomyProvided by Classyfire
- Description
- This compound belongs to the class of organic compounds known as phenylpropanoic acids. These are compounds with a structure containing a benzene ring conjugated to a propanoic acid.
- Kingdom
- Organic compounds
- Super Class
- Phenylpropanoids and polyketides
- Class
- Phenylpropanoic acids
- Sub Class
- Not Available
- Direct Parent
- Phenylpropanoic acids
- Alternative Parents
- Amphetamines and derivatives / Alpha amino acids and derivatives / Phenylpropanes / Catechols / 1-hydroxy-4-unsubstituted benzenoids / 1-hydroxy-2-unsubstituted benzenoids / Monocarboxylic acids and derivatives / Carboxylic acids / Alkylhydrazines / Organopnictogen compounds show 3 more
- Substituents
- 1-hydroxy-2-unsubstituted benzenoid / 1-hydroxy-4-unsubstituted benzenoid / 3-phenylpropanoic-acid / Alkylhydrazine / Alpha-amino acid or derivatives / Amphetamine or derivatives / Aromatic homomonocyclic compound / Benzenoid / Carbonyl group / Carboxylic acid show 14 more
- Molecular Framework
- Aromatic homomonocyclic compounds
- External Descriptors
- monocarboxylic acid, catechols, hydrazines (CHEBI:39585)
- Affected organisms
- Humans and other mammals
Chemical Identifiers
- UNII
- KR87B45RGH
- CAS number
- 28860-95-9
- InChI Key
- TZFNLOMSOLWIDK-JTQLQIEISA-N
- InChI
- InChI=1S/C10H14N2O4/c1-10(12-11,9(15)16)5-6-2-3-7(13)8(14)4-6/h2-4,12-14H,5,11H2,1H3,(H,15,16)/t10-/m0/s1
- IUPAC Name
- (2S)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoic acid
- SMILES
- C[C@@](CC1=CC(O)=C(O)C=C1)(NN)C(O)=O
References
- Synthesis Reference
Sweta GUPTA, "EXTENDED RELEASE PHARMACEUTICAL DOSAGE FORMS OF CARBIDOPA AND LEVODOPA AND PROCESS OF PREPARATION THEREOF." U.S. Patent US20130195973, issued August 01, 2013.
US20130195973- General References
- Vickers S, Stuart EK, Bianchine JR, Hucker HB, Jaffe ME, Rhodes RE, Vandenheuvel WJ: Metabolism of carbidopa (1-(-)-alpha-hydrazino-3,4-dihydroxy-alpha-methylhydrocinnamic acid monohydrate), an aromatic amino acid decarboxylase inhibitor, in the rat, rhesus monkey, and man. Drug Metab Dispos. 1974 Jan-Feb;2(1):9-22. [Article]
- Vickers S, Stuart EK, Hucker HB: Further studies on the metabolism of carbidopa, (minus)-L-alpha-hydrazino-3,4-dihydroxy-alpha-methylbenzenepropanoic acid monohydrate, in the human, Rhesus monkey, dog, and rat. J Med Chem. 1975 Feb;18(2):134-8. [Article]
- Mittur A, Gupta S, Modi NB: Pharmacokinetics of Rytary((R)), An Extended-Release Capsule Formulation of Carbidopa-Levodopa. Clin Pharmacokinet. 2017 Sep;56(9):999-1014. doi: 10.1007/s40262-017-0511-y. [Article]
- Gilbert JA, Frederick LM, Ames MM: The aromatic-L-amino acid decarboxylase inhibitor carbidopa is selectively cytotoxic to human pulmonary carcinoid and small cell lung carcinoma cells. Clin Cancer Res. 2000 Nov;6(11):4365-72. [Article]
- Yeh KC, August TF, Bush DF, Lasseter KC, Musson DG, Schwartz S, Smith ME, Titus DC: Pharmacokinetics and bioavailability of Sinemet CR: a summary of human studies. Neurology. 1989 Nov;39(11 Suppl 2):25-38. [Article]
- Nyholm D, Lewander T, Gomes-Trolin C, Backstrom T, Panagiotidis G, Ehrnebo M, Nystrom C, Aquilonius SM: Pharmacokinetics of levodopa/carbidopa microtablets versus levodopa/benserazide and levodopa/carbidopa in healthy volunteers. Clin Neuropharmacol. 2012 May-Jun;35(3):111-7. doi: 10.1097/WNF.0b013e31825645d1. [Article]
- Chana P, Fierro A, Reyes-Parada M, Saez-Briones P: [Pharmacokinetic comparison of Sinemet and Grifoparkin (levodopa/carbidopa 250/25 mg) in Parkinson s disease: a single dose study]. Rev Med Chil. 2003 Jun;131(6):623-31. [Article]
- Rang, H. P. and Dale, M. M. (2012). Rang and Dale's Pharmacology (7th ed.). Edinburgh: Elsevier/Churchill Livingstone. [ISBN:978-0-7020-3471-8]
- Ahlskog J. (2009). Parkinson's disease treatment guide for physicians. Oxford University Press. [ISBN:978-0-19-537177-2]
- FDA approvals [Link]
- FDA approvals [Link]
- Glown [Link]
- External Links
- Human Metabolome Database
- HMDB0014336
- KEGG Drug
- D00558
- PubChem Compound
- 34359
- PubChem Substance
- 46508775
- ChemSpider
- 31640
- BindingDB
- 50418773
- 2019
- ChEBI
- 39585
- ChEMBL
- CHEMBL1201236
- ZINC
- ZINC000019168887
- Therapeutic Targets Database
- DAP000592
- PharmGKB
- PA448794
- PDBe Ligand
- 142
- RxList
- RxList Drug Page
- Drugs.com
- Drugs.com Drug Page
- Wikipedia
- Carbidopa
- PDB Entries
- 1js3 / 7cx0
- FDA label
- Download (280 KB)
- MSDS
- Download (73.4 KB)
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 Phase Status Purpose Conditions Count Start Date Why Stopped 100+ additional columns Unlock 175K+ rows when you subscribe.View sample dataNot Available Completed Not Available Neurodegenerative Disorders 1 somestatus stop reason just information to hide Not Available Completed Not Available Parkinson's Disease (PD) 1 somestatus stop reason just information to hide Not Available Completed Basic Science Dopamine Activity / Episodic Memory Consolidation / Response Preparation 1 somestatus stop reason just information to hide Not Available Completed Basic Science Parkinson's Disease (PD) 1 somestatus stop reason just information to hide Not Available Completed Diagnostic Parkinson's Disease (PD) / Parkinsonian Syndromes 1 somestatus stop reason just information to hide
Pharmacoeconomics
- Manufacturers
- Aton pharma inc
- Packagers
- Aton Pharma Inc.
- Bristol-Myers Squibb Co.
- Kaiser Foundation Hospital
- Medisca Inc.
- Merck & Co.
- Dosage Forms
Form Route Strength Powder Not applicable 1 kg/1kg Tablet Oral Tablet Oral 10 mg/1 Tablet, extended release Oral Tablet, extended release Oral 25 mg/1 Tablet, film coated Oral Tablet Oral 25 mg Gel Enteral Gel Intraduodenal Suspension Enteral Tablet, coated Oral Tablet Oral 25 mg/1 Capsule Oral Tablet, for suspension Oral Tablet, orally disintegrating Oral Capsule, extended release Oral Tablet, extended release Oral 50 mg Gel Intraileal - Prices
Unit description Cost Unit Carbidopa powder 27.54USD g Lodosyn 25 mg tablet 2.53USD tablet DrugBank does not sell nor buy drugs. Pricing information is supplied for informational purposes only.- Patents
Patent Number Pediatric Extension Approved Expires (estimated) Region US6500867 No 2002-12-31 2020-06-29 US US6797732 No 2004-09-28 2020-06-29 US US9089607 No 2015-07-28 2028-12-26 US US8377474 No 2013-02-19 2028-12-26 US US8454998 No 2013-06-04 2028-12-26 US US7094427 No 2006-08-22 2022-05-29 US US8557283 No 2013-10-15 2028-12-26 US US9089608 No 2015-07-28 2028-12-26 US US9463246 No 2016-10-11 2028-12-26 US US9533046 No 2017-01-03 2028-12-26 US US9901640 No 2018-02-27 2028-12-26 US US11033521 No 2021-06-15 2039-03-28 US US11439613 No 2019-03-28 2039-03-28 US US11819485 No 2019-03-28 2039-03-28 US
Properties
- State
- Solid
- Experimental Properties
Property Value Source melting point (°C) 203-208 °C 'MSDS' boiling point (°C) Decomposes Chemspider water solubility 3.8 mg/L 'MSDS' logP -1.9 Kirk K., Yoshida S., and Haufe G. Fluorine and Health. (2008) pKa 2.3 Konduru N. and Madhuri G. (2014). IJPSR. Vol. 5 - Predicted Properties
Property Value Source Water Solubility 3.73 mg/mL ALOGPS logP -0.16 ALOGPS logP -1.2 Chemaxon logS -1.8 ALOGPS pKa (Strongest Acidic) 2.35 Chemaxon pKa (Strongest Basic) 5.66 Chemaxon Physiological Charge -1 Chemaxon Hydrogen Acceptor Count 6 Chemaxon Hydrogen Donor Count 5 Chemaxon Polar Surface Area 115.81 Å2 Chemaxon Rotatable Bond Count 4 Chemaxon Refractivity 68.77 m3·mol-1 Chemaxon Polarizability 21.81 Å3 Chemaxon Number of Rings 1 Chemaxon Bioavailability 1 Chemaxon Rule of Five Yes Chemaxon Ghose Filter No Chemaxon Veber's Rule No Chemaxon MDDR-like Rule No Chemaxon - Predicted ADMET Features
Property Value Probability Human Intestinal Absorption + 0.8638 Blood Brain Barrier - 0.9659 Caco-2 permeable - 0.7517 P-glycoprotein substrate Substrate 0.5584 P-glycoprotein inhibitor I Non-inhibitor 0.9619 P-glycoprotein inhibitor II Non-inhibitor 0.9952 Renal organic cation transporter Non-inhibitor 0.9484 CYP450 2C9 substrate Non-substrate 0.7843 CYP450 2D6 substrate Non-substrate 0.8017 CYP450 3A4 substrate Non-substrate 0.6267 CYP450 1A2 substrate Inhibitor 0.9106 CYP450 2C9 inhibitor Non-inhibitor 0.9071 CYP450 2D6 inhibitor Non-inhibitor 0.9231 CYP450 2C19 inhibitor Non-inhibitor 0.9025 CYP450 3A4 inhibitor Non-inhibitor 0.8308 CYP450 inhibitory promiscuity Low CYP Inhibitory Promiscuity 0.9615 Ames test AMES toxic 0.9107 Carcinogenicity Non-carcinogens 0.7848 Biodegradation Not ready biodegradable 0.9741 Rat acute toxicity 2.0520 LD50, mol/kg Not applicable hERG inhibition (predictor I) Weak inhibitor 0.9868 hERG inhibition (predictor II) Non-inhibitor 0.9413
Spectra
- Mass Spec (NIST)
- Not Available
- Spectra
Spectrum Spectrum Type Splash Key Predicted MS/MS Spectrum - 10V, Positive (Annotated) Predicted LC-MS/MS splash10-004i-0590000000-47d60b8745b7253310e8 Predicted MS/MS Spectrum - 10V, Negative (Annotated) Predicted LC-MS/MS splash10-002b-0930000000-e578be602978f34e8c8c Predicted MS/MS Spectrum - 20V, Positive (Annotated) Predicted LC-MS/MS splash10-01vk-2900000000-6a116e1e9fd4b13094f9 Predicted MS/MS Spectrum - 20V, Negative (Annotated) Predicted LC-MS/MS splash10-0002-1900000000-472e8e2a55ca7a96b5b8 Predicted MS/MS Spectrum - 40V, Positive (Annotated) Predicted LC-MS/MS splash10-0aos-9400000000-cb0a4bc67b6a2100f49f Predicted MS/MS Spectrum - 40V, Negative (Annotated) Predicted LC-MS/MS splash10-00r6-9500000000-db85df80540a68dbbd38 Predicted 1H NMR Spectrum 1D NMR Not Applicable Predicted 13C NMR Spectrum 1D NMR Not Applicable - Chromatographic Properties
Collision Cross Sections (CCS)
Adduct CCS Value (Å2) Source type Source [M-H]- 158.2051426 predictedDarkChem Lite v0.1.0 [M-H]- 146.96864 predictedDeepCCS 1.0 (2019) [M+H]+ 157.7696426 predictedDarkChem Lite v0.1.0 [M+H]+ 149.36421 predictedDeepCCS 1.0 (2019) [M+Na]+ 157.4271426 predictedDarkChem Lite v0.1.0 [M+Na]+ 155.27672 predictedDeepCCS 1.0 (2019)
Targets
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Inhibitor
- General Function
- Catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine and L-5-hydroxytryptophan to serotonin
- Specific Function
- 5-hydroxy-L-tryptophan decarboxylase activity
- Gene Name
- DDC
- Uniprot ID
- P20711
- Uniprot Name
- Aromatic-L-amino-acid decarboxylase
- Molecular Weight
- 53925.815 Da
References
- Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [Article]
- Durso R, Evans JE, Josephs E, Szabo G, Evans B, Fernandez HH, Browne TR: Variable absorption of carbidopa affects both peripheral and central levodopa metabolism. J Clin Pharmacol. 2000 Aug;40(8):854-60. [Article]
- Yee RE, Cheng DW, Huang SC, Namavari M, Satyamurthy N, Barrio JR: Blood-brain barrier and neuronal membrane transport of 6-[18F]fluoro-L-DOPA. Biochem Pharmacol. 2001 Nov 15;62(10):1409-15. [Article]
- Kaufmann H, Saadia D, Voustianiouk A, Goldstein DS, Holmes C, Yahr MD, Nardin R, Freeman R: Norepinephrine precursor therapy in neurogenic orthostatic hypotension. Circulation. 2003 Aug 12;108(6):724-8. Epub 2003 Jul 28. [Article]
- Orlefors H, Sundin A, Lu L, Oberg K, Langstrom B, Eriksson B, Bergstrom M: Carbidopa pretreatment improves image interpretation and visualisation of carcinoid tumours with 11C-5-hydroxytryptophan positron emission tomography. Eur J Nucl Med Mol Imaging. 2006 Jan;33(1):60-5. Epub 2005 Sep 24. [Article]
- Calabrese V, Mancuso C, Ravagna A, Perluigi M, Cini C, De Marco C, Butterfield DA, Stella AM: In vivo induction of heat shock proteins in the substantia nigra following L-DOPA administration is associated with increased activity of mitochondrial complex I and nitrosative stress in rats: regulation by glutathione redox state. J Neurochem. 2007 May;101(3):709-17. Epub 2007 Jan 4. [Article]
- Gilbert JA, Frederick LM, Ames MM: The aromatic-L-amino acid decarboxylase inhibitor carbidopa is selectively cytotoxic to human pulmonary carcinoid and small cell lung carcinoma cells. Clin Cancer Res. 2000 Nov;6(11):4365-72. [Article]
- 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]
Drug created at June 13, 2005 13:24 / Updated at August 02, 2024 07:23