National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Preferred Name

Carbidopa/Levodopa

Synonyms

Carbidopa Levodopa

Carbidopa-Levodopa

Carbidopa/Levodopa

Sinemet

Definitions

An orally available combination of carbidopa, an inhibitor of aromatic amino acid decarboxylation, and levodopa, an inert, metabolic precursor to dopamine, with dopaminergic and antiparkinsonian properties. Upon oral administration, levodopa crosses the blood-brain barrier (BBB) and is decarboxylated to dopamine via dopa decarboxylase in the brain, promoting increased activation of dopamine receptors. Carbidopa inhibits dopa decarboxylase in the periphery, thereby preventing decarboxylation of levodopa in extracerebral tissues and increasing the delivery of dopamine to the central nervous system (CNS). As carbidopa does not cross the BBB, it does not interfere with CNS levodopa metabolism.

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C153096

code

C153096

Concept_In_Subset

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C176424

DEFINITION

An orally available combination of carbidopa, an inhibitor of aromatic amino acid decarboxylation, and levodopa, an inert, metabolic precursor to dopamine, with dopaminergic and antiparkinsonian properties. Upon oral administration, levodopa crosses the blood-brain barrier (BBB) and is decarboxylated to dopamine via dopa decarboxylase in the brain, promoting increased activation of dopamine receptors. Carbidopa inhibits dopa decarboxylase in the periphery, thereby preventing decarboxylation of levodopa in extracerebral tissues and increasing the delivery of dopamine to the central nervous system (CNS). As carbidopa does not cross the BBB, it does not interfere with CNS levodopa metabolism.

FULL_SYN

Carbidopa Levodopa

Carbidopa-Levodopa

Carbidopa/Levodopa

Sinemet

label

Carbidopa/Levodopa

NCI_Drug_Dictionary_ID

793473

PDQ_Closed_Trial_Search_ID

793473

PDQ_Open_Trial_Search_ID

793473

Preferred_Name

Carbidopa/Levodopa

prefixIRI

Thesaurus:C153096

Semantic_Type

Pharmacologic Substance

UMLS_CUI

C0353697

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C38149

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C66884

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