Publications by authors named "Naumova T"

Two new nematode species of the order Dorylaimida from Lake Baikal sediments are described and illustrated. Mesodorylaimus ushkaniensis sp. n.

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Article Synopsis
  • The study focused on the microbiomes of benthic invertebrates in Lake Baikal's methane seeps and low-temperature vents.
  • Microscopy revealed the presence of microorganisms in the intestines of oligochaetes, with the greatest microbial diversity identified in nematodes, encompassing 11 different phyla.
  • Detected prokaryotes include methanogens and nitrifiers, with significant similarities to symbiotic bacteria found in insects, and there were also common organisms from the lake's water and sediments in the invertebrates' microbiomes.
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Objective: To study risk factors (RF) of obstructive sleep apnea syndrome (OSAS) in the socio-demographic groups of the population of Chuvashia.

Materials And Methods: An anonymous survey included 2161 residents of Chuvashia (1007 men, 1154 women), aged from 18 to 70 years, average 36.5±13.

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A complete list of free-living nematodes found in Lake Baikal is presented. A total of 112 species of roundworms from 32 genera, 16 families and 8 orders are listed. The locations and depths of nematode finds in Baikal are indicated, information on their distribution is summarized, and zoogeographical characteristics for each species are given.

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Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Prodorylaimus baikalensis sp. n.

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Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Tobrilus saprophagus sp. n.

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Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Tobrilus methanus sp. n.

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Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Ethmolaimus riparius sp. n.

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In the serum of patients with alcoholism with varying degrees of severity of liver fibrosis were studied the content markers of fibrosis, endothelial dysfunction and proinflammatory cytokines. Concentration in blood indicators of fibrogenesis--collagen type 4, hyaluronic acid, TIMP-1, TIMP-2, YKL-40 and MMP-2 is considerably increased at the 4 degree of fibrosis and moderately increased at low and zero degrees of liver fibrosis. Similar results were obtained in respect of proinflammatory cytokines Il-6, IL-8, IL-12/p70 and IL-12/p40.

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A review of recent data on the role of the multifunctional enzyme, associated with high density lipoproteins - paraoxonase 1 (PON1) in maintaining healthy endothelial function by detoxifying both oxidized low density lipoproteins and homocysteine thiolactone. The additional contribution to the protection of the endothelium against damage makes organophosphatase activity of PON1 involved in the detoxification products of tobacco smoke. The reduction of antioxidant activity of PON1 promotes the differentiation of monocytes into macrophages and the development of inflammation.

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We conducted a comparative study of content proinflammatory cytokines, biomarkers of inflammatory process, biochemical indicators of congestive heart failure (CHF) and hemodynamic parameters in patients with alcoholic cardiomyopathy (ACMP) and ischemic heart disease (IHD) with various NYHA classes. We examined 62 men with ACMP (n = 45) and IHD (n = 17) and NYHA class III-IV CHF. Patients of both groups had lowered ejection fraction (EF), dilated cardiac chambers, and increased left ventricular (LV) myocardial mass index (MMI).

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We conducted a comparative study of content proinflammatory cytokines, biomarkers of inflammatory process, biochemical indicators of congestive heart failure (CHF) and hemodynamic parameters in patients with alcoholic cardiomyopathy (ACMP) and ischemic heart disease (IHD) with various NYHA classes. We examined 62 men with ACMP (n=45) and IHD (n=17) and NYHA class III-IV CHF. Patients of both groups had lowered ejection fraction (EF), dilated cardiac chambers, and increased left ventricular (LV) myocardial mass index (MMI).

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Current knowledge of immunocellular and lipoprotein mechanisms of the liver-induced anti-endotoxin tolerance has been summarized. The role of T regulatory cells, different macrophage phenotypes, high density lipoproteins, oxidized low density lipoproteins and their receptors as the key players in mechanism of tolerance to endotoxin has been discussed.

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Background: Genetically unreduced (2n) embryo sacs (ES) form in ovules of gametophytic apomicts, the 2n eggs of which develop into embryos parthenogenetically. In many apomicts, 2n ES form precociously during ovule development. Whether meiosis and sexual ES formation also occur precociously in facultative apomicts (capable of apomictic and sexual reproduction) has not been studied.

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The light microscopic and ultrastuctural events of apomictic seed development from the earliest stages through the embryo and endosperm development to maturity were compared with those of the sexual one. The problem of autonomous endosperm formation was postulated as the main problem in low apomictic seed set. The characteristic features of fine differentiation of megasporocytes at diplospory, aposporous initials at apospory, embryocytes at adventive embryony as well as the egg cells at parthenogenesis and synergids at apogamety were described and compared with sexual reproductive structures.

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The purpose of the investigation was to study the specific features and the course of Helicobacter pylori-associated duodenal ulcer (DU) concurrent with chronic opisthorchiasis (CO) A hundred and twenty-seven patients with H. pylori-associated DU were examined. Of them 78 patients were found to have H.

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Aim: To study possible pathogenetic role and clinical significance of DNA-hydrolysing autoantibodies (autoAB) or DNA-abzymes in patients with rheumatoid arthritis.

Material And Methods: Prevalence of DNA-abzymes and their catalytic activity were studied in 400 patients with rheumatoid arthritis (RA) and 88 healthy donors matched by age and gender.

Results: Associated with DNA-binding autoAB DNA-hydrolysing activity was detected in 41.

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Catalytic autoantibodies (abzymes) are autoantibodies that are potentially ready to realize certain effects in the organism, first of all antibody-mediated catalysis and cytotoxicity. Natural abzymes with protolytic (protabzymes) and DNA-hydrolyzing DNA-abzymes) activity are of the greatest interest. The most impressive example of the catalytic activity of protabzymes is hydrolysis of specific proteins, revealed in patients with autoimmune diseases, such as bronchial asthma (vasoactive intestinal neuropeptide), autoimmune thyroiditis (thyroglobulin), multiple sclerosis (myelin basic protein), and autoimmune myocarditis (cardiomyosin).

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The immunocytograms of 166 patients with opiomania, primarily of the heroin variation, aged 15 to 19, were examined. 18 healthy teenagers of the same age were in the control group. The sampling comprised both patients without any signs of infectious diseases (86 persons) and patients with viral hepatitis B and C.

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The responses of the salt-accumulating halophyte Seidlitzia rosmarinus to salt stress (500 mM NaCI) were studied. Observations were carried out over the span of 72 h. Three phases of responses were identified.

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