期刊
NEUROBIOLOGY OF DISEASE
卷 44, 期 2, 页码 161-173出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2011.06.005
关键词
Diabetes; Hypertension; Cerebral atrophy; White matter abnormalities; Vascular disease; Insulin receptor
资金
- Alberta Heritage Foundation for Medical Research (AHFMR)
Diabetes mellitus types 1 and 2 (DM1 and DM2) and/or hypertension (HTN) can contribute to cognitive decline, cerebral atrophy and white matter abnormalities in humans. Adult rat models of streptozotocin-induced DM1 and genetic strains of DM2 and HTN were used to investigate relative contributions of DM and HTN for alterations in cerebral structure and function as well as insulin receptor biology using cognitive testing, magnetic resonance imaging (MRI), and histological and molecular methods. The effects of DM1 or DM2 were generally similar. DM was associated with earlier onset of cognitive impairment than with HTN alone. DM was independently correlated with brain atrophy, whereas HTN had minimal effects on brain volume. The combination of DM and HTN led to identifiable mild hippocampal neuronal loss while either DM or HTN led to synaptic loss. Only DM led to downregulation of the insulin receptor pathways' activation. In contrast, only HTN was associated with vascular luminal reduction and restricted cerebral perfusion on MRI. The impacts of DM and HTN in the brain differ, while their separate contributions can lead to some additive adverse effects within rodent brain grey matter. (C) 2011 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据