Biomedical subjects

T V Radysh

Publications and source records attributed to T V Radysh.

5 recordsLinked to original sources

PubMed2005

[Immunopathophysiologic characteristics of early pregnancy in women with recurrent miscarriage].

UNLABELLED: The lymphocyte subsets, activation marker expression and activity of ConA-treated lymphocytes have been studied in 58 patients with a history of unexplainable pregnancy loss (UPL) and 22 normal pregnant women (control) in 4-7 weeks of pregnancy. The increase of CD16/56+ cell level and CD4+/ CD8+ ratio and decrease of CD19+ cell level have been found in peripheral blood of UPL patients in comparison with control. The expression of HLA-DR was upregulated on CD3+ and CD8+ cells and the expression of CD25 was downregulated on CD3+, CD4+, CD8+, and CD16/56+ cells in UPL women. According to correlation analysis results, low expression of CD25 was related to a low expression of CD8 on NK, high expression of CD45RA on CD4+ helper cells, high expression of HLA-DR on CD8+ cytotoxic cells. High frequency of ConA-induced activation, low frequency of ConA-induced suppression and low suppressive activity of ConA-induced lymphocyte were found in UPL patients compared to control. CONCLUSION: women with UPL have disorders in feto-maternal recognition in early pregnancy that led to a development of the inadequate immune response to fetus realized as a defect of NK activation, deficiency of T-cytotoxic cell limitation and memory helper cell generation, downregulation of TR cells and suppressor function.

Abortion, Habitual↗

PubMed2001

Immune disorders in women with premature ovarian failure in initial period.

PROBLEM: Premature ovarian failure (POF) may be considered as an autoimmune endocrine disease. Autoantibodies and lymphocyte subset changes are associated with premature ovarian failure. Immune cell parameters were studied in relation with anticardiolipin antibodies (ACAB) classes M and G in the initial period of POF. METHODS: Two-color flow cytometry was used to determine lymphocyte subsets and enzyme-linked immunosorbent assay (ELISA) was used to detect ACAB and hormones in the peripheral blood of 68 POF patients, 32 women with normal menopause (NM) and 13 healthy women as a normal control (NC). RESULTS: Patients in the initial period of POF had decreased levels of CD3+, CD19+, CD3+8+, and CD8+57+ lymphocytes and a high percentage of CD5 positive in CD19+ cell population compared to the control; frequencies of IgM ACAB in POF patients were significantly higher than both IgG ACAB and IgM ACAB in NC; correlation between lymphocyte subsets and hormone levels was absent. Women with early NM showed a low number of CD3+, CD3+4+, and CD3+8+ lymphocytes, a high number of CD3 + DR, and elevation of the percentage of CD5 positive in CD19+ lymphocytes compared with the control. The frequencies of both IgM and IgG ACAB were high; the levels of lymphocyte subsets had correlations with progesterone and estradiol concentrations. CONCLUSIONS: An increase of autoantibody producing B cells (CD5+19+) and a low number of effector suppressor/cytotoxic lymphocytes (CD8+57+) with active production of anticardiolipin autoantibodies class M were found. This suggested a primary autoimmune process in the initial period of POF. Autoimmune defeat of the ovary could be the primary cause of POF, whereas in NM autoimmunity is a result of hormone dysfunction.

Adult↗

PubMed1989

[Comparative analysis of pregnancy proteins and regulation of the functional activity of T-suppressors in pregnancy].

The relationship between the pregnancy specific proteins (SP1, SP3) and the functional activity of ConA-induced T-suppressors has been studied during normal gestation. There were a positive correlation between the activity of T-suppressors and the level of SP1 during 8-28 weeks of gestation; between the activity of T-suppressors and the level of SP3 during 8-36 weeks, especially during 29-36 weeks of gestation. It was shown that a progressive accumulation of these proteins apparently necessary for the formation a suppression's dominant in the condition of the immunoregulatory branches during gestation. These findings suggest that SP1 and SP3 as a natural endogenous immunoregulators may play an important role in reproductive strategy of human gestation.

Concanavalin A↗

PubMedDate not supplied

[Results of immunization with allogenic leukocytes in women with recurrent pregnancy loss].

Immunization with allogenic leukocytes has been proposed as immunotherapy of recurrent pregnancy loss. However efficacy, mechanism and immune monitoring of it remain not fully explainable. Our results suggest high clinical efficacy of alloimmunization related to normalizing effect on subsets, activation and suppressor function of lymphocytes, and placental protein production. Based on data obtained, the possible use of immune parameters and placental proteins for determination of alloimmunization efficacy was proposed.

Abortion, Habitual↗

PubMedDate not supplied

[Immunologic status in physiological pregnancy].

The levels of T gamma- and T mu-lymphocytes, functional activity of ConA-induced T-suppressors and the concentrations of SP1 and SP3 were determined in 164 normal pregnant women during 8-40 weeks of gestation. It is found that formation of the suppressor dominant is necessary for the immunological maintenance during 8-32 weeks of gestation. This dominant is intended to block superfluous maternal immune response to fetal alloantigens. The formation of such a dominant is evoked by high functional activity of ConA-induced T-suppressors and high levels of T gamma-lymphocytes with immunodeficiency of T mu-cells. Results of correlation analysis have shown a relationship between functional activity of T-suppressors and accumulation of two specific pregnancy proteins. It permits determining physiological role of SP1 and SP3 as natural endogenous immunoregulators of T-suppressors.

Female↗