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2001 JUN 7 - (NewsRx Network) -- by Sonia Nichols, senior medical writer - A protein that stimulates the formation of red blood cells may also influence the development of endometriosis in females, new research suggests.
Sachiko Matsuzaki and coworkers at Tohoku University School of Medicine in Japan have found women with endometriosis have greater levels of the protein erythropoietin in their peritoneal fluid as compared with women without endometriosis. Because erythropoietin may influence the early development of endometriosis, drugs designed to inhibit peritoneal erythropoietin levels could, potentially, be used for treating the initial stages of the disease.
Erythropoietin (Epo) is commonly known for its influence on erythropoiesis, the formation of new red blood cells. "However, recent studies have indicated that Epo also has angiogenic properties and plays an important role in the estrogen-dependent cyclical angiogenesis within the mouse uterus," said Matsuzaki and colleagues in the May 2001 issue of Human Reproduction.
To study comparable effects in humans, researchers tested the peritoneal fluid of 42 women with endometriosis and 18 without endometriosis for Epo concentrations.
All samples contained Epo, according to the researchers, but concentrations of Epo were higher in women with endometriosis than without endometriosis (13.1 [+ or -] 1.2 miIU/ml and 7.2 [+ or -] 0.7 mIU/ml, respectively, mean [+ or -] SE, P[less ...