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Biomedical subjects

A V Solov'eva

Publications and source records attributed to A V Solov'eva.

6 recordsLinked to original sources

[The role of intravascular autorossette-formation in the onset of anemia in patients with chronic cardiac failure].

AIM: To study intensity of intravascular autorossette-formation (ARF) and its role in development of anemia in patients with chronic heart failure (CHF). MATERIAL AND METHODS: Blood smears (Romanovsky-Gimze stain) were obtained from 210 patients with CHF (functional class I-III) treated as indicated. Total number of autorossettes (AR) and AR with red cell lysis in them were calculated in the blood smears. RESULTS: The number of endogenic AR increases with higher functional class of CHF, duration of the disease, number of drugs. With increasing number of AR and AR with exocytic lysis, number of red cells and blood hemoglobin concentration lower. CONCLUSION: It is suggested that phenomenon of intravascular autorossette-formation is involved in pathogenesis of anemia in CHF patients and a cause of anemia may be much more complicated that it was thought initially.

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Changes in lymph microcirculation during pathological stress.

Stress caused by immobilization and acoustic stimulation produces considerable changes in lymph microcirculation. These changes manifested in dilation of microvessels, enhanced phasic contractile activity and its abnormal pattern, accelerated lymph flow, and recruitment of new lymphangions in drainage functions.

Animals↗

[Nitric oxide in the lymphatic microvessel regulation].

Topical application of sodium nitroprusside on rat mesentery has a marked influence on lymph microvessels function. The drug causes a dilation of majority of lymphangions and decrease of the pacemaker activity of the vessel wall structures and valves. These changes do not lead to lymph stasis, and lymph flow velocity does not reduce. The non-selective inhibitor of NO synthase (N-nitro-L-arginine) intensifies vasomotions of lymph microvessels, modulates phasic contractile activity and increases lymph flow velocity. There is a time dependent dynamic of changes in action of N-nitro-L-arginine. During inhibition of endogenous NO synthesis the responses of lymph microvessels on sodium nitroprusside application are modified: the constriction of majority lymphangions and activation of valve work are observed.

Animals↗

[Functional organization of lymphatic microvessels of the rat mesentery].

Lymph flow as measured with biomicroscopic and speckle-interferometrical techniques was very unstable and its rate did not depend on lymphangion diameter in the rat mesentery. A correlation was found between amount of cells in the lymph flow and other indices of lymphangion functions. All microvessels with phasic contractions and/or working valve were revealed as having a lymph flow. The phasic activity and the valve work correlated with each other. The higher the amplitude and frequency of the phasic activity and the longer the contraction cycle, the higher was the rate of the valve work.

Animals↗