Publications by authors named "N N. Gulyaev"

The article presents a clinical case of secondary cardiomyopathy in an HIV patient with plasmablastic lymphoma due to the combined pathology (HIV infection with ongoing antiretroviral therapy in combination with antitumor therapy), in which the use of multimodal imaging contributed to establishing the correct diagnosis and excluding the unjustified use of invasive methods for diagnosing ischemic heart disease.

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The purpose of the research is comparison of glomerular filtration rate calculated on the basis of serum concentrations of creatinine and cystatin C in patients with chronic heart failure and sarcopenia. In this research 86 patients with chronic heart failure and sarcopenia aged 60 to 92 years (mean age 75±7 years) were examined. GFR calculation was determined using formulas based on creatinine (CKD-EPIC), cystatin C (CKD-EPICys) in blood and both markers (CKD-EPICr-Cys).

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A laboratory study of the cytokine profile and the content of the intercellular adhesion molecules was performed in 38 patients with initial signs of aortic hemilunus calcification. It has been determined that the content of IL-6 and IL-8 had significantly higher values compared with the control group, which indicates the direct role of nonspecific chronic inflammation in the development of calcifying aortic valve damage. A significantly lower content of sE-selectin was also identified, which may indicate the absence of activation of adhesion molecules at the initial stage of aortic valve calcification.

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A comprehensive study of lipidograms of 36 patients with initial signs of calcification of aortic semilunium was performed. It was determined that the content of apolipoprotein A-1 was significantly lower in comparison with the control groups, which requires further studies of the evaluation of the effect on the process of early development of calcification of drugs capable to increasing its content. If the concentration of apolipoprotein A-1 is less than 1,1 mg/dl and/or the apoB/apoA ratio is increased by more than 1, it is advisable to recommend dispensary follow-up with regular (no less than 1 time in 5 years) echocardiographic study with a detailed study of the functional state of the aortic valve.

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Detailed crystal chemical characterization of human pathological cardiovascular deposits (PCD) was conducted applying wide set of the instrumental methods (XRD, FTIR, Raman, SEM, different chemical analyses). There was some progress achieved in the understanding of it formation mechanism. The obtained data evidence that pathological cardiovascular deposits are presented by non-stoichiometric water-bearing B-type carbonated hydroxyapatite just like other apatites of the human body.

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