Endometrial receptivity markers in infertile women stimulated with letrozole compared with clomiphene citrate and natural cycles

    Authors

    A. Ganesh; N. Chauhan; S. Das; B. Chakravarty;K. Chaudhury

    Comments

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    Abbreviated Journal Title

    Syst. Biol. Reprod. Med.

    Keywords

    Clomiphene citrate; endometrial receptivity; integrin; letrozole; leukemia inhibitory factor; L-selectin; LEUKEMIA INHIBITORY FACTOR; OF-PHASE ENDOMETRIA; UTERINE RECEPTIVITY; UNEXPLAINED INFERTILITY; INTEGRIN EXPRESSION; EMBRYONIC IMPLANTATION; WINDOW; PINOPODES; FERTILE; HORMONE; Andrology; Reproductive Biology

    Abstract

    Though various advantages associated with the use of letrozole as an ovulation inducing drug are documented, there is inadequate information regarding its effect on endometrial receptivity. Expression of endometrial receptivity markers including alpha(v)beta(3) integrin, L-selectin, LIF, and pinopods during the implantation window in infertile women stimulated with letrozole or clomiphene citrate (CC), and spontaneous cycles is investigated. A total of 36 women were included in the study out of which 16 women were diagnosed with primary unexplained infertility and the other 20 women with severe oligoasthenozoospermic/azoospermic male partners. Both groups were sub-divided into three groups; women stimulated with letrozole, or with CC, and the third group was allowed to ovulate spontaneously (natural cycles). Women having natural cycles and not given any drug were considered as controls. Once ovulation was confirmed by ultrasonography, endometrial samples were collected on the seventh day post-ovulation and analyzed. In women with unexplained infertility treated with letrozole and CC, epithelial and stromal expression of alpha(v)beta(3) integrin, L-selectin, leukemia inhibitory factor (LIF), and pinopod formation was found to be significantly higher as compared to controls. Expression of these receptivity markers was found to be comparable amongst the letrozole, CC, and control groups in women with severe oligoasthenozoospermic/azoospermic male partners. Cell cycle analysis showed similar cell cycle phase fractions on comparing the CC and the letrozole groups. Stimulation with letrozole and CC appears to enhance endometrial receptivity in women with unexplained infertility. However, letrozole and CC did not have any significant effect on the endometrial receptivity markers of women with severe oligoasthenozoospermic/azoospermic male partners.

    Journal Title

    Systems Biology in Reproductive Medicine

    Volume

    60

    Issue/Number

    2

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    105

    Last Page

    111

    WOS Identifier

    WOS:000332167500006

    ISSN

    1939-6368

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