Granot I, Dekel N, Bechor E, Segal I, Fieldust S, Barash A. Temporal analysis of connexin43 protein and gene expression throughout the menstrual cycle in human endometrium.
Fertil Steril 2000;
73:381-6. [PMID:
10685547 DOI:
10.1016/s0015-0282(99)00531-2]
[Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE
To analyze the pattern of connexin43 gene and protein expression in human endometrium throughout the menstrual cycle.
DESIGN
Controlled clinical study.
SETTING
An academic research center.
PATIENT(S)
Women with 28-day menstrual cycles who had mechanical infertility and failed to conceive after IVF treatment.
INTERVENTION(S)
Endometrial and blood samples were collected on days 8, 12, 14, 21, and 25 of spontaneous menstrual cycles.
MAIN OUTCOME MEASURE(S)
Endometrial expression of connexin43 protein and messenger RNA, endometrial thickness, and serum concentrations of gonadotropins and steroids.
RESULT(S)
The expression of connexin43 gene and protein decreased on day 12 and day 14 of the menstrual cycle and then increased on day 21 and day 25, respectively. A serum LH surge accompanied by a peak in the FSH concentration was observed on days 12-14. The progesterone concentration increased on days 21-25, but there was no significant change in the E2 concentration. The thickness of the endometrium increased between days 8 and 12 and did not change further between days 21 and 25.
CONCLUSION(S)
The expression of connexin43 gene and protein in human endometrium changes during the menstrual cycle in a pattern that is associated with the secretion of LH, FSH, and progesterone. This pattern may serve as a marker for implantation competence.
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