PubMed Health⌕ Search

Biomedical subjects

I O Naslednikova

Publications and source records attributed to I O Naslednikova.

13 recordsLinked to original sources
PubMed2005

Molecular mechanisms of changes in TNF-alpha production by blood mononuclears in chronic viral hepatitis C.

Chronic viral hepatitis C is associated with decreased production of TNF-alpha by the peripheral blood mononuclear leukocytes irrespective of virus genotype and degree of the morphological activity of the process in the liver. This process positively correlates with the increase in the content of TNF-alpha soluble receptor (molecular weight 55 kDa), which can play a role in the mechanisms of immunopathogenesis of long persistence of hepatitis C virus in the body.

Adolescent↗
PubMed2005

Chronic tick-borne encephalitis virus antigenemia: possible pathogenesis pathways.

Study of the proliferative potential and immunophenotype of lymphocytes and cytokine-producing capacity of mononuclear cells in patients with chronic tick-borne encephalitis virus antigenemia showed changes in T cell lymphoproliferative response, relative content of T cells and T helper inductors, immunoregulatory index, and imbalance in the production of immunoregulatory Th1 and Th2 cytokines.

Adolescent↗
PubMed2005

[Immunoregulatory cytokines and chronization of type C hepatitis: matching of clinical and immunological manifestations].

The study demonstrates significant changes of cytokine-producing ability of mononuclear blood leucocytes in type 'hepatitis, correlating with the degree of hepatic lesion. The results showed that various morphologic types of chronic virus type C hepatitis were associated with disbalance in production of pro- and antiinflammatory cytokines, i.e. decrease of tumor necrosis factor (TNF)-alpha concentration and a significant rise of interleukin (IL)-4 and IL-10 concentations, which were the most prominent in cases of severe hepatic fibrosis and high histologic activity of hepatitis. The study established a direct correlation between increase of the ability of mononuclear blood leucocytes to synthesize IL-4, and the progress of the pathologic process.

Adolescent↗
PubMed2005

[Typical changes of lymphocyte surface architectonics in chronic viral infection].

With the use of scanning electron microscopy, lymphocyte surface architectonics has been described in cases of chronic viral persistence at tick-borne (vernal) encephalitis, hepatitis types A and B, and Herpes simplex. In lymphocytic population smooth and plicate cells in addition to cells with vesicles and outgrowths on the surface prevailed. The appearance of lymphocytes with a combined type of superficial microrelief was registered. It is supposed that despite the variety of types of lymphocyte surface architectonics and possible causes promoting their polymorphism, changes in superficial ultrastructure of immunocompetent cells for chronic viral infection have a nonspecific character.

Chronic Disease↗
PubMed2004

[The surface architectonics, functional characteristics, and metabolism in peripheral blood lymphocytes in acute herpes virus infection].

Twenty-five patients (males--11, females--14; aged 18 to 45) with chronic herpes virus infection relapsing at the time of clinical tests were examined, including investigations of the surface architectonics, the ability to blast-transformation and the metabolic status of peripheral-blood lymphocytes. Chronic herpes virus infection was found to be concurrent with changes of the percentage ratio of lymphocytes with the surface micro-patterns of different types, with a more intense activity of the immunity T-chain and with a changed nature of the intracellular metabolism of lymphocyte cells.

Adolescent↗
PubMed2003

Structure, metabolism, and functions of peripheral blood lymphocytes during long-term persistence of Epstein-Barr virus.

Study of surface architectonics, blast transformation potential, and cytochemical activity of peripheral blood lymphocytes from children infected with Epstein-Barr virus revealed imbalance between structural, metabolic, and functional state of lymphocytes. This imbalance persists in delayed period after infection and determines long-term viral persistence in the macroorganism.

Adolescent↗
PubMed2003

[Dehydrogenase activity in mononuclear cells of peripheral blood in infectious mononucleosis in children].

The study of the activity of dehydrogenases in blood cells could be an additional method at diagnostics of etiological variants of infectious mononucleosis (IM) of the viral and bacterial types. The activity of succinatedehydrogenasa (SDG) and of alpha-glycerophosphatedehydrogenase (alpha-GPDG) was increasing in lymphocytes and monocyte of the peripheral blood as compared to the same activity in healthy children. Such changes were preserved in the reconvalescense phase. The activity of enzymes in the lymphoid and monocytic cells was found at viral IM to meet the normal value. The atypical mononuclear cells, found in blood of patients with IM of both viral and bacterial nature, are a population of different-activity cellular dehydrogenases, in which cellular elements with the activity of SDG and alpha-GPDG, corresponding to the enzyme status of monocytes, are predominant.

Adolescent↗
PubMed2002

Subpopulation composition of peripheral blood lymphocytes in children with infectious mononucleosis.

In patients with viral and bacterial infectious mononucleosis during the acute period of disease and clinical convalescence blood content of CD72(+)and CD16(+)lymphocytes increased compared to normal. The count of CD8(+)cells increased in viral mononucleosis during convalescence and these changes persist in delayed periods after convalescence. In bacterial mononucleosis the content of CD72(+)lymphocytes return normal 18 months after convalescence.

Adolescent↗
PubMed2002

[Nucleic acid content in peripheral blood lymphocytes from patients with infectious mononucleosis].

An increase in RNA content in peripheral blood lymphocytes and increased number of macronuclear weakly basophilic cells (presumably due to increased content of B-lymphocytes which, in contrast to sharply basophilic T-lymphocytes, are characterized by light basophilic cytoplasm) are observed in patients with infectious mononucleosis. Macronuclear forms represented equally by hyper- and hypobasophilic elements predominate the structure of atypical mononuclears. Increased content of DNA in the peripheral blood lymphocytes is due to increased number of cells with high DNA content in the patient's blood and appearance of cells with 52-65 arb. units DNA (blast-transformed atypical mononuclears infected with the virus) which are normally absent.

Adolescent↗
PubMedDate not supplied

[Cytokines and antiviral immuniy].

In the review of modern literature and results of own research about role of immunoregulation cytokines imbalance system in pathogen of deep-rooted virus infections are analyzed. The question on molecular mechanisms of cytokine chain deregulation at persistent virus infections is discussed.

Animals↗
PubMedDate not supplied

[Immunopathogenetic features of tick-borne encephalitis under long-term viral antigenemia].

The occurrence of chronic tick-borne encephalitis viral antigenemia characterized by the asymptomatic course or minimal clinical manifestations is caused by the virus-immune cell interaction. Cellular immunity was studied in 183 patients with chronic (more than 6-month) tick-borne encephalitis viral antigenemia, by evaluating the immunophenotypic and cytogenetic statuses, structural and functional features, cytokine profile, and peripheral lymphocytic apoptosis. The findings suggest impairments in the cooperation of immunocompetent cells and in the classical scheme of antiviral immunity regulation in tick-borne encephalitis viral persistence due to the changes in lymphocytic structural and functional properties.

Antigens, Viral↗