Cypermethrin is a widely used insecticide belongs to type II pyrethroids. It highly in developing countries control many species of insects as it plays an important role pest control. Vitamin C intracellular antioxidant against insecticides. The aim the present study analyze toxic effects cypermethrin (CYP) and positive effect vitamin (VC) with graded doses (0 CYP, 200 VC, 12 CYP CYP+200 VC mg/...

Functional gap junctional communication between vascular cells has been implicated in ascending dilatation and the cytochrome P-450 (CYP) inhibitor-sensitive and NO- and prostacyclin-independent dilatation of many vascular beds. Here, we assessed the mechanisms by which the epoxyeicosatrienoic acids (EETs) generated by a CYP 2C enzyme control interendothelial gap junctional communication. In CY...

It is becoming clear that enzymes have dynamic structures that respond to changes in their environment (1–3). The presence of substrate and cofactors, the identities and oxidation states of ligands and metal centers, all can have a dramatic effect on the compactness, conformation, and oligomerization state of an enzyme. For membrane-bound or membrane-associated enzymes, how the enzyme interacts...

background: the omega-3 fatty acid (ω-3 fatty acid) such as eicosapentaenoic acid (epa) is currently used in the clinic as a nutritional supplement in the treatment of polycystic ovarian syndrome (pcos). the present study was designed to investigate the effect of epa on the expression levels of peroxisome proliferator-activated receptor gamma (pparγ) and cytochrome p450 aromatase (encoded by th...

ABSTRACT Cytochrome P450 (CYP) 2S1 is "orphan" CYP that is overexpressed in several epithelial tissues and many human tumors. The pure enzyme is required for better understanding of its biological functions. Therefore, human CYP2S1 was considered to be prepared by the gene manipulations and heterologous expression in Escherichia coli. Here, the conditions suitable for efficient expression of hu...

The enzyme kinetics of the metabolism of ezlopitant in liver microsomes from various species have been determined. The rank order of the species with regard to the in vitro intrinsic clearance of ezlopitant was monkey >> guinea pig > rat >> dog > human. CJ-12,764, a benzyl alcohol analog, was observed as a major metabolite, and a dehydrogenated metabolite (CJ-12,458) was equally important in hu...

The cytochrome P450s (CYPs) constitute a superfamily of isoforms that play an important role in the oxidative metabolism of drugs. Each CYP isoform possesses a characteristic broad spectrum of catalytic activities of substrates. Whenever 2 or more drugs are administered concurrently, the possibility of drug interactions exists. The ability of a single CYP to metabolise multiple substrates is re...

The ability of modafinil to affect human hepatic cytochrome P450 (CYP) activities was examined in vitro. The potential for inhibition of CYP1A2, CYP2A6, CYP2B6, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4/5, and CYP4A9/11 by modafinil (5-250 microM) was evaluated with pooled human liver microsomes. Modafinil exhibited minimal capacity to inhibit any CYP enzyme, except CYP2C19. Modafinil inhibited t...