[POLYMORPHISM OF CYP2C9 GENE AND RISK OF HEPATOTOXICITY DEVELOPMENT DURING ANTIRETROVIRAL THERAPY.].

We have studied the association of polymorphic variants of CYP2C9 genes with the risk of drug-induced liver injury (DILI) during antiretroviral therapy of HIV-infected patients. The analysis of polymorphic variants of CYP2C9*2.(Argl44Cys) and CYP2C9*3 (Ile359Leu) genes showed that the dominant genotype of CYP2C9*2 was the honiozygous CC carriership and for CYP2C9*3 it was the prevalence of AA genotype, the incidence of which was close and amounted to 80%.

[Nitric oxide modification of hemoglobin oxygen affinity in different conditions of oxygenation].

The aim of the present study was to investigate the role of nitric oxide (NO) in the regulation of hemoglobin oxygen affinity (HOA) in the presence of different oxygen partial pressure. In this research the effect of NO donors on gas-transport, acid-base balance, HOA indexes, metHb, iron-nitrosylhemoglobin amounts, and total nitrite/nitrate concentration was estimated in vitro. Experimentally, positive correlation was found between NO-dependent shift of HOA and hemoglobin oxygen saturation level.

[Peroxynitrite effect on the haemoglobin oxygen affinity in vitro in presence of different partial pressure of carbon dioxide].

Peroxynitrite (ONOO-) besides its toxic possesses regulatory action that includes the modulation of oxygen binding properties of blood. The aim of this work was to estimate ONOO- effect on the haemoglobin oxygen affinity (HOA) in vitro in presence of different partial pressure of carbon dioxide (CO2). The ONOO- presence in venous blood in conditions of hypercapnia induced oxyhaemoglobin dissociation curve shift leftward while in hypocapnic conditions the result of a different character was obtained.

Functional alterations in NO, PGI2 and EDHF pathways in the aortic endothelium after myocardial infarction in rats.

Background: Previous work on endothelial dysfunction in post-MI heart failure has shown conflicting results.

Aim: To analyze gender related alterations in NO-, PGI(2)- and EDHF-dependent endothelial function in the thoracic aorta 7 and 42 days after myocardial infarction (MI).

Methods And Results: MI was induced by coronary artery ligation in female and male Sprague-Dawley rats.

Nitric oxide effect on the hemoglobin-oxygen affinity.

The biological roles of nitric oxide (NO)-hemoglobin (Hb) derivatives are obscure. It is proposed that NO can function as an allosteric regulator of hemoglobin oxygen-binding properties. We aimed to estimate the effects of NO donors and NO-synthase substrate (L-arginine) on hemoglobin-oxygen affinity (HOA) in experiments in vitro with the various ratios between NO formed and Hb and various oxygen pressures.