Protein Abundance of Drug Metabolizing Enzymes in Human Hepatitis C Livers. 2023

Marek Drozdzik, and Joanna Lapczuk-Romanska, and Christoph Wenzel, and Lukasz Skalski, and Sylwia Szeląg-Pieniek, and Mariola Post, and Arkadiusz Parus, and Marta Syczewska, and Mateusz Kurzawski, and Stefan Oswald
Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, 70-111 Szczecin, Poland.

Hepatic drug metabolizing enzymes (DMEs), whose activity may be affected by liver diseases, are major determinants of drug pharmacokinetics. Hepatitis C liver samples in different functional states, i.e., the Child-Pugh class A (n = 30), B (n = 21) and C (n = 7) were analyzed for protein abundances (LC-MS/MS) and mRNA levels (qRT-PCR) of 9 CYPs and 4 UGTs enzymes. The protein levels of CYP1A1, CYP2B6, CYP2C8, CYP2C9, and CYP2D6 were not affected by the disease. In the Child-Pugh class A livers, a significant up-regulation of UGT1A1 (to 163% of the controls) was observed. The Child-Pugh class B was associated with down-regulation of the protein abundance of CYP2C19 (to 38% of the controls), CYP2E1 (to 54%), CYP3A4 (to 33%), UGT1A3 (to 69%), and UGT2B7 (to 56%). In the Child-Pugh class C livers, CYP1A2 was found to be reduced (to 52%). A significant trend in down-regulation of the protein abundance was documented for CYP1A2, CYP2C9, CYP3A4, CYP2E1, UGT2B7, and UGT2B15. The results of the study demonstrate that DMEs protein abundances in the liver are affected by hepatitis C virus infection and depend on the severity of the disease.

UI MeSH Term Description Entries
D008862 Microsomes, Liver Closed vesicles of fragmented endoplasmic reticulum created when liver cells or tissue are disrupted by homogenization. They may be smooth or rough. Liver Microsomes,Liver Microsome,Microsome, Liver
D002853 Chromatography, Liquid Chromatographic techniques in which the mobile phase is a liquid. Liquid Chromatography
D006526 Hepatitis C INFLAMMATION of the LIVER in humans caused by HEPATITIS C VIRUS, a single-stranded RNA virus. Its incubation period is 30-90 days. Hepatitis C is transmitted primarily by contaminated blood parenterally and is often associated with transfusion and intravenous drug abuse. However, in a significant number of cases, the source of hepatitis C infection is unknown. Hepatitis, Viral, Non-A, Non-B, Parenterally-Transmitted,Parenterally-Transmitted Non-A, Non-B Hepatitis,PT-NANBH,Parenterally Transmitted Non A, Non B Hepatitis
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016174 Hepacivirus A genus of FLAVIVIRIDAE causing parenterally-transmitted HEPATITIS C which is associated with transfusions and drug abuse. Hepatitis C virus is the type species. Hepatitis C virus,Hepatitis C-Like Viruses,Hepaciviruses,Hepatitis C Like Viruses,Hepatitis C viruses,Hepatitis C-Like Virus
D051544 Cytochrome P-450 CYP3A A cytochrome P-450 suptype that has specificity for a broad variety of lipophilic compounds, including STEROIDS; FATTY ACIDS; and XENOBIOTICS. This enzyme has clinical significance due to its ability to metabolize a diverse array of clinically important drugs such as CYCLOSPORINE; VERAPAMIL; and MIDAZOLAM. This enzyme also catalyzes the N-demethylation of ERYTHROMYCIN. CYP3A,CYP3A4,CYP3A5,Cytochrome P-450 CYP3A4,Cytochrome P-450 CYP3A5,Cytochrome P-450IIIA,Cytochrome P450 3A,Cytochrome P450 3A4,Cytochrome P450 3A5,Erythromycin N-Demethylase,Taurochenodeoxycholate 6-alpha-Monooxygenase,3A5, Cytochrome P450,6-alpha-Monooxygenase, Taurochenodeoxycholate,Cytochrome P 450 CYP3A,Cytochrome P 450 CYP3A4,Cytochrome P 450 CYP3A5,Cytochrome P 450IIIA,Erythromycin N Demethylase,N-Demethylase, Erythromycin,P-450 CYP3A, Cytochrome,P-450 CYP3A4, Cytochrome,P-450 CYP3A5, Cytochrome,P-450IIIA, Cytochrome,P450 3A, Cytochrome,P450 3A5, Cytochrome,Taurochenodeoxycholate 6 alpha Monooxygenase
D053719 Tandem Mass Spectrometry A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection. Mass Spectrometry-Mass Spectrometry,Mass Spectrometry Mass Spectrometry,Mass Spectrometry, Tandem
D019388 Cytochrome P-450 CYP1A2 A cytochrome P450 enzyme subtype that has specificity for relatively planar heteroaromatic small molecules, such as CAFFEINE and ACETAMINOPHEN. CYP1A2,Phenacetin O-Dealkylase,CYP 1A2,Caffeine Demethylase,Cytochrome P-450 LM(4),Cytochrome P-450 LM4,Cytochrome P-450d,Cytochrome P450 1A2,CYP1A2, Cytochrome P-450,Cytochrome P 450 CYP1A2,Cytochrome P 450 LM4,Cytochrome P 450d,Demethylase, Caffeine,O-Dealkylase, Phenacetin,P-450 LM4, Cytochrome,Phenacetin O Dealkylase
D019392 Cytochrome P-450 CYP2E1 An ethanol-inducible cytochrome P450 enzyme that metabolizes several precarcinogens, drugs, and solvents to reactive metabolites. Substrates include ETHANOL; INHALATION ANESTHETICS; BENZENE; ACETAMINOPHEN and other low molecular weight compounds. CYP2E1 has been used as an enzyme marker in the study of alcohol abuse. 4-Nitrophenol-2-Hydroxylase,CYP2E1,Dimethylnitrosamine N-Demethylase,CYP 2E1,CYP IIE1,CYPIIE1,Cytochrome P-450 (ALC),Cytochrome P-450 IIE1,Cytochrome P-450-J,Cytochrome P450 2E1,N-Nitrosodimethylamine Demethylase,4 Nitrophenol 2 Hydroxylase,Cytochrome P 450 CYP2E1,Cytochrome P 450 IIE1,Cytochrome P 450 J,Dimethylnitrosamine N Demethylase,N Nitrosodimethylamine Demethylase
D065729 Cytochrome P-450 CYP2C9 A cytochrome P-450 subtype that has specificity for acidic XENOBIOTICS. It oxidizes a broad range of important clinical drugs that fall under the categories of NONSTEROIDAL ANTI-INFLAMMATORY AGENTS; HYPOGLYCEMIC AGENTS; ANTCOAGULANTS; and DIURETICS. CYP2C9,CYPIIC9,Cytochrome P450 MP-4,Cytochrome P450 MP-8,Cytochrome P450 PB-1,CYP2C9, Cytochrome P-450,Cytochrome P 450 CYP2C9,Cytochrome P450 MP 4,Cytochrome P450 MP 8,Cytochrome P450 PB 1,MP-4, Cytochrome P450,MP-8, Cytochrome P450,P-450 CYP2C9, Cytochrome,P450 MP-4, Cytochrome,P450 MP-8, Cytochrome,P450 PB-1, Cytochrome,PB-1, Cytochrome P450

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