ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (8): 1348-1355.doi: 10.11843/j.issn.0366-6964.2015.08.010

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Studies on Changes of Sexual Organs and Their Related Hormones during the Early Phase in Dehydroepiandrosterone-induced Female Rat Polycystic Ovarian Syndrome Model

GUO Bao-ping,XU Ming-long,HU Jin,XU Yin-xue*   

  1. (College of Animal Science and Technology,Nanjing Agricultural University,Nanjing 210095,China)
  • Received:2014-11-26 Online:2015-08-23 Published:2015-08-23

Abstract:

This experiment was designed to study the effects of dehydroeplandrosterone (DHEA) on reproductive organs development,hormones level in serum and AMH mRNA expression with the development of rat polycystic ovarian syndrome (PCOS).Eighty immature female SD rats(21 d) were randomly divided into 2 groups:control group with no DHEA(n=40) and treatment group with DHEA(6 mg•(100 g body weight)-1n=40).Rats were injected daily with 0.2 mL seame oil for up to 20 days.Ten rats of each groups were killed at 5,10,15 and 20 days.The blood samples were obtained,and organ indexes were calculated by weights of body,ovary,uterus,livers,kidney,and spleen.The detection results showed that the weights of body (15,20 days),uterus (5,10,15,20 days) and ovarian (5,10 days)of treatment groups were significantly higher than the control groups (P<0.01);Serum AMH and T of treatment groups (5,10,15,20 days) were significantly higher than control groups(P<0.01 or P<0.05),while the serum P (15,20 days),LH and E2 (20 days) were higher (P<0.01 or P<0.05);The levels of AMH mRNA of treatment groups(5,10 days) were obvious different significantly higher (P<0.05).These results indicated that the sexual organs were given priority to development during early stage of prepuberty in treated group.The abnormal AMH production could be cause of pathogenesis and development marker of PCOS in rats.The expression of AMH mRNA in ovary and serum AMH level were not exactly the same,the results may supply the reference data for further research on PCOS in female rats.

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