PMID: 6111633Mar 7, 1981Paper

A role for prostacyclin (PGi2) in excessive menstrual bleeding

S K SmithD T Baird


The synthesis of prostanoids from arachidonic acid incubated with endometrium alone or together with myometrium was studied in women with excessive menstrual blood-loss (range 57--186 ml, median 86 ml). Production of prostaglandins F2 alpha, E2, and D2 was similar to that observed for the endometrium of women with normal periods (range 5--50 ml; median 11 ml). However, the endometrium from women with excessive menstrual blood-loss was more effective than endometrium from women with normal menstrual blood-loss at enhancing the production by a control preparation of myometrium of 6-oxo-prostaglandin F1 alpha, the stable metabolite of prostacyclin. The ability of the uterus to generate prostacyclin, a prostaglandin known to inhibit platelet aggregation and stimulate vasodilatation, may influence the degree and duration of menstrual bleeding.


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