Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology · 2020
Expression of HLA-G and KIR2DL4 receptor in chorionic villous in missed abortion.
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Bespalova Olesya, Bakleicheva Margarita, Ivashchenko Tatiana, Tral Tatiana, Tolibova Gulrukhsor, Kogan Igor
Аннотация
OBJECTIVE: Human leukocyte antigen-G (HLA-G) is a molecule that was first known to confer protection to the fetus from destruction by the immune system of its mother. HLA-G expression is mainly restricted to the fetal-maternal interface on the extravillous cytotrophoblast, placenta, amnion.
UNLABELLED: Methods: The purpose of this study is to investigate the HLA-G and KIR2DL4 expression in chorionic villous among 2 groups with missed abortion: group 1 - 27cases with normal karyotype and group 2 - 22 with fetal polyploidy. Criteria of inclusion: abortive material from two groups of women with missed abortion; 6-12 weeks gestational age, singleton pregnancy, cytogenetic of chorionic villous was obligatory - normal fetal karyotype and polyploidy of fetus.
UNLABELLED: Results: During IHC investigations the average relative area of HLA-G expression in trophoblast was counted (in 1st group 33.9 ± 3.5 and in 2nd group 38.6 ± 2.8). Expression of HLA-G the most verified in extravillous chorion stroma. The average relative area of KIR2DL4 receptor was not statistically different among two groups (31.6 ± 2.4 and 32.2 ± 1.7).
CONCLUSIONS: These results suggest the role of HLA-G for the progression in early reproductive losses. Low expression of HLA-G is associated with pregnancy complications and can be one of the reasons for spontaneous abortion.
UNLABELLED: Methods: The purpose of this study is to investigate the HLA-G and KIR2DL4 expression in chorionic villous among 2 groups with missed abortion: group 1 - 27cases with normal karyotype and group 2 - 22 with fetal polyploidy. Criteria of inclusion: abortive material from two groups of women with missed abortion; 6-12 weeks gestational age, singleton pregnancy, cytogenetic of chorionic villous was obligatory - normal fetal karyotype and polyploidy of fetus.
UNLABELLED: Results: During IHC investigations the average relative area of HLA-G expression in trophoblast was counted (in 1st group 33.9 ± 3.5 and in 2nd group 38.6 ± 2.8). Expression of HLA-G the most verified in extravillous chorion stroma. The average relative area of KIR2DL4 receptor was not statistically different among two groups (31.6 ± 2.4 and 32.2 ± 1.7).
CONCLUSIONS: These results suggest the role of HLA-G for the progression in early reproductive losses. Low expression of HLA-G is associated with pregnancy complications and can be one of the reasons for spontaneous abortion.