Ethiological mechanisms of perinatal stress on lifestyle-related diseases pathogenesis
Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Date (from‐to) : 2010/04 -2014/03
Author : MIKI Takanori; OHTA Kenichi; SUZUKI Shongo; YOKOYAMA Toshifumi; KUSAKA Takashi; TAKEUCHI Yoshiki
This study was carried out to examine the effects of early postnatal maternal separation stress on the brain development, biological properties of adipose tissue, and the interactions between them. Wistar rats were separated from their mothers in early life. The level of various neurotrophic factor ligands/receptors in the cerebral cortex and cerebellum showed abnormal time-dependent fluctuations. Given that these factors play important roles in brain development, it can be speculated that the altered expression of these factors induced by maternal separation may interrupt normal brain development and ultimately lead to functional disruption. Furthermore, there was a significant change in the level of various mitochondrial energy-expenditure molecules. Given that these molecules influence the mitochondrial metabolism, our study indicates that early postnatal maternal deprivation can influence the fate of adipose tissue proliferation, presumably leading to obesity later in life.