Optical isomers of dihydropyridine calcium channel blockers display enantiospecific effects on the expression and enzyme activities of human xenobiotics-metabolizing cytochromes P450

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33160173" target="_blank" >RIV/61989592:15310/16:33160173 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15110/16:33160173

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0378427416332696" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0378427416332696</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.toxlet.2016.10.005" target="_blank" >10.1016/j.toxlet.2016.10.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optical isomers of dihydropyridine calcium channel blockers display enantiospecific effects on the expression and enzyme activities of human xenobiotics-metabolizing cytochromes P450

Popis výsledku v původním jazyce

Dihydropyridine calcium channel blockers (CCBs) are used as anti-hypertensives and in the treatment of angina pectoris. Structurally, CCBs have at least one chiral center in the molecule, thereby existing in two or more different enantiomers. In the current paper we examined effects of benidipine, felodipine and isradipine enantiomers on the expression and enzyme activities of human xenobiotics-metabolizing cytochromes P450. All CCBs dose-dependently activated aryl hydrocarbon receptor (AhR) and pregnane X receptor (PXR), as revealed by gene reporter assays. Activation of AhR, but not PXR, was enantiospecific. Consistently, CCBs induced CYP1A1 and CYP1A2 mRNAs, but not protein, in human hepatocytes and HepG2 cells, with following pattern: benidipine (-)>(+), isradipine (-)>(+) and felodipine (+)>(-). All CCBs induced CYP2A6, CYP2B6 and CYP3A4 mRNA and protein in human hepatocytes, and there were not differences between the enantiomers. All CCBs transformed AhR in its DNA-binding form, as revealed by electromobility shift assay. Tested CCBs inhibited enzyme activities of CYP3A4 (benidipine (+)>(-); felodipine (-)>(+); isradipine (-)-(+)) and CYP2C9 (benidipine (-)>(+); felodipine (+)>(-); isradipine (-)>(+)). The data presented here might be of toxicological and clinical importance.

Název v anglickém jazyce

Optical isomers of dihydropyridine calcium channel blockers display enantiospecific effects on the expression and enzyme activities of human xenobiotics-metabolizing cytochromes P450

Popis výsledku anglicky

Dihydropyridine calcium channel blockers (CCBs) are used as anti-hypertensives and in the treatment of angina pectoris. Structurally, CCBs have at least one chiral center in the molecule, thereby existing in two or more different enantiomers. In the current paper we examined effects of benidipine, felodipine and isradipine enantiomers on the expression and enzyme activities of human xenobiotics-metabolizing cytochromes P450. All CCBs dose-dependently activated aryl hydrocarbon receptor (AhR) and pregnane X receptor (PXR), as revealed by gene reporter assays. Activation of AhR, but not PXR, was enantiospecific. Consistently, CCBs induced CYP1A1 and CYP1A2 mRNAs, but not protein, in human hepatocytes and HepG2 cells, with following pattern: benidipine (-)>(+), isradipine (-)>(+) and felodipine (+)>(-). All CCBs induced CYP2A6, CYP2B6 and CYP3A4 mRNA and protein in human hepatocytes, and there were not differences between the enantiomers. All CCBs transformed AhR in its DNA-binding form, as revealed by electromobility shift assay. Tested CCBs inhibited enzyme activities of CYP3A4 (benidipine (+)>(-); felodipine (-)>(+); isradipine (-)-(+)) and CYP2C9 (benidipine (-)>(+); felodipine (+)>(-); isradipine (-)>(+)). The data presented here might be of toxicological and clinical importance.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FR - Farmakologie a lékárnická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-01809S" target="_blank" >GA13-01809S: Enantiospecifické interakce mezi klinicky užívanými chirálními léčivy a regulačními drahami humánních cytochromů P450.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Toxicology Letters

ISSN

0378-4274

e-ISSN

—

Svazek periodika

262

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

IE - Irsko

Počet stran výsledku

14

Strana od-do

173-186

Kód UT WoS článku

000386071200020

EID výsledku v databázi Scopus

—