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Biomedical subjects

O V Andropova

Publications and source records attributed to O V Andropova.

3 recordsLinked to original sources

["Function-corrected" indexes for precise estimation of aortic stenosis severety].

The aim of the research was to study clinical significance of "function-corrected" indexes (FCI) in non-invasive evaluation of aortic valvular stenosis (AVS) severity. 85 patients with degenerative aortic valve calcification (42 - with AVS and 43 - without aortic ostium (AO) stenosis) were subjects of a cross-sectional study. Significant correlation between AO area and FCI indexes was demonstrated. When it is not possible to determine AO by planimetric methods, it may be counted using FCI with good sensitivity (87%) and specificity (94%).

Aged↗

[Factors facilitating development of degenerative aortic valvular stenosis].

The aim of the study was to determine factors of risk and progress of aortal valvular calcinosis (AVC) and aortic ostium stenosis (AOS). The subjects were 85 patients with AVC (42--with aortic valvular stenosis (AVS), and 43--without AOS). The study, which included analysis of the lipid and mineral metabolism, and immunological tests, shows that potential factors of AVC are: age (p < 0. 001), osteoporosis (p < 0.03), mitral ring calcification (p = 0.047), dislipidemia (high serum level of total cholesterol, cholesterol of low density lipoproteins, and apoB, atherogenic shift of apoB/apoA-1 ratio, low level of cholesterol of high density lipoproteins (CHDLP)), disbalance between intecellular matrix synthesis and destruction (high concentration of alkaline phosphatase and its bone fraction, and accelerated deoxypyridinoline excretion), inflammation (high concentration of C-reactive protein (CRP), fibrinogen, and interleukin-6 (IL-6)). The factors of AOS were: age (p < 0.001), smoking (p < 0.001), osteoporosis (p = 0.004), AVC (p < 0.001), mitral ring calcinosis (p = 0.033), dislipidemia (high levels of cholesterol of low density and very low density lipoproteins, low concentrations of CHDLP, and apoA-1), degradation of extracellular matrix, and inflammation (high concentrations of CRP, fibrinogen, IL-6, and IL-8). Thus, atherogenic dislipidemia and mineral dysmetabolism disorder facilitate AVC. The revealed immune status changes imply the role of inflammation in the development and progress of AVS.

Age Factors↗

[Aortic valve stenosis: persistence of infective agents or noninfective inflammatory process?].

The probable risk factors leading to aortic valve calcification are not clearly defined. The cross-sectional study of 85 patients with vascular and valvular calcification was performed. Correlations between the immune tests and aortic stenosis severity were investigated. The predictors of aortic valve calcification were probably C-reactive protein and interleukin-6. The predictors of aortic stenosis progression were interleukin-8, antibodies of Chlamydia pneumoniae and cytomegalovirus, and dysregulation of complement's components. Implication of immune reactivity could influence aortic valve calcification.

Aged↗