[The regulatory role of natural antibodies and prostaglandin F2 alpha in the course of a myocardial infarct]. / Reguliatornaia rol' estestvennykh antitel i prostaglandinov F2 al'fa v techenii infarkta miokarda.

Concentration of PGF2 alpha were correlated to those of antiprostaglandin antibodies IgM and IgG to this mediator in donors and myocardial infarction patients. In donors correlation between PGF2 alpha concentration and IgG antibody levels is positive. In uneventful myocardial infarction relevant correlation partially recovered at the expense of IgM antibodies. This is not true for complicated myocardial infarction.

[Natural anti-PGF2alpha and anti-PGE2 antibodies in ischemic heart disease and hypertension]. / Estestvennye antitela k prostaglandinam F2alpha i E2 pri ishemicheskoi bolezni serdtsa i gipertonicheskoi bolezni.

The important role played by prostaglandins in the pathogenesis of coronary disease and essential hypertension is well known. The authors have attempted to reveal a relationship between blood levels of natural autoantibodies to PGF2 alpha and PGE2 and specific features of coronary disease and essential hypertension course and complications. A total of 87 subjects were examined, 23 of these--normal controls, 25 patients with myocardial infarction, 22 with angina pectoris, and 17 with essential hypertension. Solid-phase enzyme immunoassay was employed to detect anti-PGF2 alpha and anti-PGE2 antibodies. These antibodies were found in normal subjects, coronary patients and hypertensives. Blood levels of these antibodies correlated with some complications of coronary disease and essential hypertension. These results permit a hypothesis that the pathogenetic physiologic role of the detected natural antibodies to prostaglandins consists in their defense homeostatic function.

[Thrombin and anti-thrombin antibody levels in the blood of patients with acute myocardial infarction]. / Dinamika soderzhaniia trombina i antitel k nemu v krovi bol'nykh ostrym infarktom miokarda.

Simultaneous levels of thrombin and its natural antibodies were comparatively analyzed in donors and patients with myocardial infarction. Thrombin and its antibody levels were demonstrated to remain unchanged in the healthy subjects. With myocardial infarction development, there was an increase in thrombin concentrations and a decrease in natural antithrombin antibodies at the same time. A linear correlation was established between the levels of thrombin and its antibodies and failure in diagnosing coagulative disorders by one of the parameters studied was also ascertained, which made it possible to introduce a new diagnostic criterion, namely an "antithrombin index" that enabled the groups of donors and patients to be differentiated.

[Comparative analysis of the levels of anti-prostaglandin F2 alpha antibodies in the normal state and in cardiovascular diseases]. / Sravnitel'nyi analiz soderzhaniia autoantitel protiv prostaglandina F2 alpha v norme i pri serdechno-sosudistykh zabolevaniiakh.

The ELISA test was performed on sera of normal donors and patients with myocardial infarction (MI) and essential hypertension (EH) to detect autoantibodies against prostaglandin F2 alpha (a-PGF2 alpha). The a-PGF2 alpha level was much higher after immune complexes dissociation. Baseline a-PGF2 alpha was elevated in EH patients with a sudden rise in blood pressure, and in MI patients without hypertension and unstable angina. MI patients with bradyarrhythmias also had elevated a-PGF2 alpha levels. Baseline a-PGF2 alpha was rather low in the sera of donors, chronic EH patients with hypertension and unstable angina, suggesting that a-PGF2 alpha has a physiological role to play.