Effect of oophorectomy and exogenous estrogen replacement on liver injury in experimental obstructive jaundice  

作　　者：Hamdi Bülent Uan Mehmet Kaplan Bülent Salman Utku YIlmaz B Bülent Mentes Cemalettin Aybay 

机构地区：[1]Department of General Surgery, Karaelmas University Medical School, Zonguldak 67100, Turkey [2]Department of General Surgery, Gaziantep State Hospital, Gaziantep [3]Department of General Surgery, Gazi University Medical School, Ankara 06500, Turkey [4]Department of Immunology, Gazi UniversityMedical School, Ankara 06500, Turkey

出　　处：《World Journal of Gastroenterology》2008年第18期2818-2824,共7页世界胃肠病学杂志（英文版）

摘　　要：AIM: To investigate the role of estrogen on liver injury in an experimental obstructive jaundice model.METHODS: Three groups of female rats were constituted; group 1 was oophorectomized and given E2 (n = 14), group 2 was oophorectomized and given placebo (n = 14), and group 3 was sham operated (n = 14). Fourteen days following constitution of bile duct ligation, all groups were compared in terms of serum tests, histopathologic parameters, and tissue levels of IFN-γ and IL-6.RESULTS: The parameters representing both the injury and/or the reactive response and healing were more pronounced in groups 1 and 2 (χ2 = 17.2, χ2 = 10.20; χ2 = 12.4, P < 0.05). In the sham operated or E2 administered groups significantly lower tissue levels of IFN-γ and higher IL-6 levels were found. In contrast, high IFN-γ and low IL-6 tissue levels were found in the oophorectomized and placebo group (P < 0.001). Kupffer cell alterations were observed to be more pronounced in the groups 1 and 3 (χ2 = 6.13, P < 0.05).CONCLUSION: Our study indicates that E2 impaired liver functions, accelerated both the liver damage and healing. In the conditions of bile duct obstruction, estrogen significantly changed the cytokine milieu in the liver.AIM： To investigate the role of estrogen on liver injury in an experimental obstructive jaundice model.METHODS： Three groups of female rats were constituted; group 1 was oophorectomized and given E2 （n = 14）, group 2 was oophorectomized and given placebo （n = 14）, and group 3 was sham operated （n = 14）. Fourteen days following constitution of bile duct ligation, all groups were compared in terms of serum tests, histopathologic parameters, and tissue levels of IFN-γ and IL-6.RESULTS： The parameters representing both the injury and/or the reactive response and healing were more pronounced in groups 1 and 2 （χ^2= 17.2, χ^2= 10.20; χ^2= 12.4, P 〈 0.05）. In the sham operated or E2 administered groups significantly lower tissue levels of IFN-γ and higher IL-6 levels were found. In contrast, high IFN-γ and low IL-6 tissue levels were found in the oophorectomized and placebo group （P 〈 0.001）. Kupffer cell alterations were observed to be more pronounced in the groups 1 and 3 （χ^2= 6.13, P 〈 0.05）.CONCLUSION： Our study indicates that E2 impaired liver functions, accelerated both the liver damage and healing. In the conditions of bile duct obstruction, estrogen significantly changed the cytokine milieu in the liver.

关 键 词：ESTROGEN Liver injury OOPHORECTOMY Obstructive jaundice 

分 类 号：R575[医药卫生—消化系统]