Evolution of Menstruation

2019-09-17 02:47:42 | BioPortfolio


This study examines gene expression and gene regulation in the uterine lining during menses in women, for evolutionary comparison with other primates which do or do not menstruate. Samples will be obtained by non-invasive collection of menstrual fluid from healthy donors.


Menstruation corresponds to the shedding of the uterine lining when fecundation has not occurred. This is a recent evolutionary innovation in primates, and the cellular and genetic changes that led to the acquisition of menstruation are not well understood. Additionally, the uterine lining is poorly characterized in humans at the menstrual time point, which hinders both evolutionary and medically-relevant analyses.

In this study, the research team are collecting menstrual fluid samples from healthy female volunteers to profile gene expression and gene regulatory elements in the major cell types that compose the uterine lining during menstruation. The investigators will compare this data to similar samples collected from other primates at the same time point in the female hormonal cycle.

The objective is to identify genes that have acquired novel regulation and/or expression patterns and which may be involved in menstruation.

Study Design




Institut de Biologie de l'Ecole Normale Superieure
Ile De France


Not yet recruiting


Institut National de la Santé Et de la Recherche Médicale, France

Results (where available)

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Published on BioPortfolio: 2019-09-17T02:47:42-0400

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Medical and Biotech [MESH] Definitions

Variations of menstruation which may be indicative of disease.

Chemical compounds that induce menstruation either through direct action on the reproductive organs or through indirect action by relieving another condition of which amenorrhea is a secondary result. (From Dorland, 27th ed)

The periodic shedding of the ENDOMETRIUM and associated menstrual bleeding in the MENSTRUAL CYCLE of humans and primates. Menstruation is due to the decline in circulating PROGESTERONE, and occurs at the late LUTEAL PHASE when LUTEOLYSIS of the CORPUS LUTEUM takes place.

A condition in which a woman suffers from severe depression, irritability, and tension before MENSTRUATION. Premenstrual dysphoric disorder (PMDD) may involve a wide range of physical or emotional symptoms, which are more severe and debilitating than those seen with premenstrual syndrome (PMS), and which include at least one mood-related symptom. Symptoms usually stop when, or shortly after, menstruation begins.

Absence of menstruation.

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