[Influence of the soybean flavonoid supplement on the synthesis of nitric oxide (NO) in the patients with atherosclerosis].

66 patients of 40-77 age group with atherosclerosis were studied. The observation period made up 4 weeks. The patients were divided into two groups. Group I- experimental group (50 patients) and group II-control group (16 patients) The patients of both groups were given standard therapy, but the patients of group I were additionally given 200mg soybean flavonoid supplement (daily dose 100mg. in capsules two times a day after meals). Clinical observation showed that the patients had no adverse reactions due to intake of the natural food supplement. Compared to the control patients better dynamics of clinical signs was observed in experimental group: reduction of chest pain intensity, arrhythmia and breathlessness, increase of tolerance to physical load, manifested of normalisation arterial hypertension and reduction of heart rate. Biochemical analysis showed an antiatherogenic and hypolipidemic effect of the soybean flavonoid supplement. Statistically reliable increase of NO; reduction of general peripherial vascular resistance and improvement of systolic function. Therefore it can be concluded that given biologically active supplement can be used in the treatment of atherosclerosis as an effective therapeutic tool.

[Predictor of early thrombolysis in acute coronary syndrome by estimation of the QT interval variability on 12 lead standard electrocardiogram].

It has been stated that decreased dispersion of QT interval (QTd) on 12 lead ECG is associated with successful thrombolysis (TH) in acute myocardial infarction but it is not clear whether QTd can predict early successful TH. The goal of the investigation was to evaluate significance of QTd and QT interval variability between adjacent precordial leads (QTdl) for prediction of successful early TH in acute coronary syndrome (ACS). Two groups of patients after 6 hours from the beginning of acute coronary attack with elevation of ST segment on ECG were under investigation: I group -- 26 patients with resolution of ST> or =70% after 60-90 min from the starting of TH and II group -- 21 patients with no resolution of ST. QTd was defined as the difference between maximal and minimal QT interval and QTd as the difference between adjacent precordial ECG leads. QTd is a marker of successful TH but does not predict its efficiency, QTde<50 predicted TH with 80% sensitivity, 85% specificity and 87% positive predictive value.

[QT interval variability in adjacent areas on standard ecg during ectopic activity in patients with acute coronary syndrome].

Clinical and experimental evidence closely link malignant ventricular arrhythmia with increased dispersion of refractoriness and thus electrical heterogeneity in different kinds of heart diseases. Most increased dispersion of refractoriness is due to inhomogenous action potential duration in adjacent areas, decreased local conduction velocity or both. The article focuses on ectopic ventricular activity and on QT interval variability in adjacent segments on standard ECG in patients with acute coronary syndrome. The adjacent QT dispersion was defined as a difference between two adjacent leads. Seventy nine patients aged 54+/-6,5 in 6 hour interval after the attack with elevation of ST segments on ECG were studied. Fifteen patients aged 48+/-7 without elevation of ST segment on ECG served as control subjects. Patients were allocated to two groups: one included patients with 1-2 ectopic degree; group two included patients with 3-5 ectopic degree. In patients with acute coronary syndrome QT max and QTd was significantly higher than in control subjects (p<0,05). The increase of ventricular ectopic degree is linked with the increased adjacent QT dispersion.

[Various biochemical mechanisms of the combined action of extreme factors]. / Nekotorye biokhimicheskie mekhanizmy kombinirovannogo deistviia ékstremal'nykh faktorov.

Biologically active substances exhibiting the radioprotective effect were formed in liver tissue after treatment with hypoxia and with electromagnetic irradiation of ultrahigh frequency. The protective factor was found to be among protein or peptide fractions. Possible mechanisms of formation and action of the biologically active substance are discussed.

[Possible mechanisms of the radiomodifying action of exogenous hypoxia and electromagnetic radiation in the SHF range]. / O vozmozhnykh mekhanizmakh radiomodifitsiruiushchego deistviia ékzogennoi gipoksii i élektromagnitnogo izlucheniia SVCh-diapazona.

It was shown that biologically active substances formed in the liver tissue under the effect of hypoxia and SHF electromagnetic radiation produce a radioprotective effect when administered 15 min before exposure and have no protective effect when administered after irradiation.