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J.Health Sci., 54(4), 503-507, 2008
Diesel Exhaust Exposure Enhances the Persistence of Endometriosis Model in Rats
Masakazu Umezawa,*, a, b Chika Sakata,a, b
Masako Tabata,b Naomi Tanaka,a, b
Sayaka Kudo,b Ken Takeda,b
Tomomi Ihara,aand Masao Sugamataa
aDepartment of Pathology, Tochigi Institute of Clinical Pathology, 2308-3 Minamiakatsuka, Nogi, Shimotsuga-gun, Tochigi 3290112, Japan and
bDepartment of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
Diesel exhaust (DE) is known to be one of the main causes of air pollution. Several studies have suggested that DE causes lung cancer, cardiovascular disease, abnormal reproductive function, and central nervous system damage as well as type I allergy in the airway. Type I allergy also plays a role in pathogenesis of endometriosis. In the present study, we examined the effect of exposure to DE on a rat model of endometriosis. Endometriosis was induced by autotransplantation of endometrium to the peritoneum in female Sprague-Dawley rats exposed to DE during prenatal and postnatal periods. Endometriotic lesions, normal peritoneum, and blood samples were obtained on days 4, 7, and 14 after autotransplantation. The extent of stromal proliferative lesions in the endometriosis model was greater in the rats of the DE exposure group than in those of the control group on day 14. Serum monocyte chemoattractant protein (MCP)-1 level was significantly higher in rats with endometriosis in the DE exposure group than in those in the control group on day 14. Results of this study suggest that DE exposure enhances the histologic and molecular pathology of endometriosis in rats.
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