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CYP3A4 is a member of the cytochrome P450 superfamily of enzymes.The cytochrome P450 proteins are monooxygenases that catalyze many reactions involved in drug metabolism and synthesis of steroids (including cholesterol), and other lipids.
"Indiana University Department of Medicine Clinical Pharmacology Drug Interactions Flockhart Table ™". "INHIBITORS, INDUCERS AND SUBSTRATES OF CYTOCHROME P450 ISOZYMES". "The Life Raft Group: Long List of Inhibitors and Inducers of CYP3A4 and CYP2D6". "DRUGBANK Online: Cytochrome P-450 Enzyme Inhibitors".
Many substrates for CYP3A4 are drugs with a narrow therapeutic index, such as amiodarone [10] or carbamazepine. [11] Because these drugs are metabolized by CYP3A4, the mean plasma levels of these drugs may increase because of enzyme inhibition or decrease because of enzyme induction.
n/a Ensembl n/a n/a UniProt n a n/a RefSeq (mRNA) NM_000775 n/a RefSeq (protein) n/a n/a Location (UCSC) n/a n/a PubMed search n/a Wikidata View/Edit Human Cytochrome P450, family 3, subfamily A, also known as CYP3A, is a human gene locus. A homologous locus is found in mice. The CYP3A locus includes all the known members of the 3A subfamily of the cytochrome P450 superfamily of genes. These ...
Examples of drugs metabolized by CYP3A4 are statins (used to lower cholesterol levels), benzodiazepines (used to treat anxiety and insomnia), calcium channel blockers (used to treat high blood pressure), etc. By measuring 6β-hydroxycortisol levels in clinical trials, researchers can assess whether certain drugs affect the activity CYP3A4 which ...
Clonazepam is metabolized extensively via nitroreduction by cytochrome P450 enzymes, including CYP3A4. Erythromycin, clarithromycin, ritonavir, itraconazole, ketoconazole, nefazodone, cimetidine, and grapefruit juice are inhibitors of CYP3A4 and can affect the metabolism of benzodiazepines. [130] It has an elimination half-life of 19–60 hours ...
Almost all benzodiazepines are metabolised by the CYP3A4 and CYP2D6 pathways, and inhibition of these enzymes results in a higher area under the curve (i.e., the total effect over time of a given dose). Other examples of drugs dependent on CYP3A4 for their metabolism are escitalopram, [45] warfarin, [46] oxycodone, tramadol, and oxymorphone ...
Ciclosporin is highly metabolized by the CYP3A4 enzyme in ... Ikervis is a similar formulation with a concentration of 0.1%. ... The medication is approved in ...