Endothelial cell proliferation in the endometrium of women with menorrhagia and in women following endometrial ablation

J.G. van Kooy, Nancy Taylor, D. Healy, Peter A. W. Rogers
In: Human Reproduction · 1996 · vol. 11(5) , pp. 1067–1072 · doi:10.1093/oxfordjournals.humrep.a019298 · PMID:8671392 · W2049336075
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Endometrial endothelial cell proliferation, a marker of angiogenesis, was significantly increased in women with menorrhagia but not in women after endometrial ablation.

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Abstract

Local endometrial aberrations are thought to be the major contributing factor to essential menorrhagia. Here we have examined the role of endometrial angiogenesis, the growth of new blood vessels, in essential menorrhagia. Our study tested two hypotheses: firstly that angiogenesis is disturbed in the endometrium of women with menorrhagia; and secondly that when menstrual blood loss is decreased following endometrial ablation, an endometrial environment favouring normal angiogenesis has returned. Angiogenesis was measured by endothelial cell proliferation. Proliferating endothelial cells were identified by an immunohistochemical double staining technique. A total of 57 women participated in this study, of whom 19 were controls, 20 had menorrhagia and 18 were 3-6 months post-ablation. There was a significant increase in endothelial cell proliferation in the endometrium of patients with menorrhagia compared with the control endometrium. Conversely, post-ablation endometrium showed a non-significant decrease in endothelial cell proliferation. The increased endothelial cell proliferation in the endometrium of patients with menorrhagia was not the result of a general increase in endometrial cellular proliferation and did not result in a change in endothelial cell concentration compared with control endometrium. These results support the hypothesis that angiogenesis is disturbed in the endometrium of patients with menorrhagia and normalized in post-ablation endometrium.

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