Polymorphic variants progesterone receptor gene: case-control study among women with first trimester miscarriage
Keywords:progesterone, miscarriage, luteal phase deficiency, progesterone receptor, early reproductive losses, missed abortion
Low levels of progesterone and, accordingly, the associated luteal phase deficiency of the menstrual cycle, is traditionally considered the most common cause of such reproductive disorders as infertility and miscarriage. It is believed that insufficient levels of progesterone can result in the above-mentioned pathological conditions of the reproductive function of women. However, the prescribing physician therapy to restore the progesterone level is not always effective.
The search for the causes of the ineffectiveness of standard therapy led to the conclusion that the most common cause of luteal phase deficiency is the lack of effect of progesterone on the endometrium.
This article is provides an overview of published data on the role of progesterone receptor system and its genesis in the early reproductive losses. It has also conducted its own study to determine SNPs 1031G/C, 1978G/T, 2310C/Tgene PGR as one of the factors in the development of miscarriage I trimester. The study group consisted of 52 women with miscarriage (control group consisted 41 healthy women previously had labor, unencumbered reproductive history and asked for a medical abortion).
Analysis of the survey results showed that heterozygous carriers of mutations G1031C, C2310T, G1978T PGR gene is not an independent risk factor for miscarriage (mutant alleles were found in 40.4% of the women in the study group and 37.8% of women in the control group); genotype homozygous for the mutations G1031C, C2310T, G1978T PGR gene were found just only in the study group – 2.1, 2.14 and 5.2% of cases respectively, which probably can be attributed to factors propensity to miscarriages. The duration of the menstrual cycle in women who have PR gene mutations carriers was significantly higher for 2–3 days compared to women who are not carriers of mutations.
It is expedient to conduct such studies in the group of women with confirmed luteal phase deficiency on the basis of reliable criteria (histological studies, etc.) and large volume sample.
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Copyright (c) 2015 М. П. Веропотвелян, Ю. С. Погуляй, М. М. Свиридов, П. С. Горук
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