Estrogen deficiency exacerbates learning and memory deficits associated with glucose metabolism disorder in APP/PS1 double transgenic female mice  

作　　者：Min Luo Qinghua Zeng Kai Jiang Yueyang Zhao Zhimin Long Yexiang Du Kejian Wang Guiqiong He 

机构地区：[1]Chongqing Key Laboratory of Neurobiology,Chongqing Medical University,Chongqing 400016,PR China [2]Department of Pathology,Suining Municipal Hospital of TCM,Suining,Sichuan 629000,PR China [3]Department of Anatomy,Chongqing Medical University,Chongqing 400016,PR China [4]Department of Gastroenterology,Suining Central Hospital,Suining,Sichuan 629000,PR China

出　　处：《Genes & Diseases》2022年第5期1315-1331,共17页基因与疾病（英文）

基　　金：supported by the National Natural Science Foundation of China(No.81671257,81371221,and 31600825);the Innovation Research Group at Institutions of Higher Education in Chongqing(No.CXQTP19019019034).

摘　　要：Alterations in glucose metabolism occur in the brain in the early stage of Alzheimer's disease(AD),and menopausal women have more severe metabolic dysfunction and are more prone to dementia than men.Although estrogen deficiency-induced changes in glucose metabolism have been previously studied in animal models,their molecular mechanisms in AD remain elusive.To investigate this issue,double transgenic(APP/PS1)female mice were subjected to bilateral ovariectomy at 3 months of age and were sacrificed 1 week,1 month and 3 months after surgery to simulate early,middle and late postmenopause,respectively.Our analysis demonstrated that estrogen deficiency exacerbates learning and memory deficits in this mouse model of postmenopause.Estrogen deficiency impairs the function of mitochondria in glucose metabolism.It is possible that the occurrence of AD is associated with the aberrant mitochondrial ERβ-mediated IGF-1/IGF-1R/GSK-3βsignaling pathway.In this study,we established a potential mechanism for the increased risk of AD in postmenopausal women and proposed a therapeutic target for AD due to postmenopause.

关 键 词：Alzheimer’s disease Estrogen deficiency Glucose metabolism disorder GSK-3b IGF-1 MITOCHONDRIA 

分 类 号：R749.16[医药卫生—神经病学与精神病学]