2014年11月7日
Systemic angiotensin II and exercise-induced neurogenesis in adult rat hippocampus.
Brain research
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- 巻
- 1588
- 号
- 開始ページ
- 92
- 終了ページ
- 103
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.brainres.2014.09.019
Physical exercise is a robust stimulus that enhances hippocampal neurogenesis via cell proliferation in rodents. We examined the role of systemic angiotensin (Ang) peptides in exercise-dependent enhancement of neurogenesis in the adult rat hippocampus. Plasma angiotensin peptide concentration increased rapidly in response to 30 min of treadmill exercise. After undertaking this exercise once daily for a week, the number of proliferating cells in the hippocampus, identified by 5-bromo-2'-deoxyuridine (BrdU) incorporation, had increased compared with controls. To mimic the increase in plasma Ang peptide concentrations brought about by exercise, rats were injected with 10(-5)M Ang II once daily for a week. The number of BrdU-incorporating cells and of doublecortin (DCX)-expressing immature neurons in the hippocampus rose approximately 1.5 and 1.9-fold compared with controls, respectively. The effects were completely abolished by an Ang II receptor subtype 1 antagonist losartan. These findings, taken together, suggest that an increased concentrations of Ang peptides in the systemic circulation during exercise may promote neurogenesis in the adult rat hippocampus.
- リンク情報
- ID情報
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- DOI : 10.1016/j.brainres.2014.09.019
- PubMed ID : 25223907