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Melatonin plus treadmill exercise synergistically promotes neurogenesis and reduce apoptosis in focal cerebral ischemic rats (877.17)
Author(s) -
Lee Minkyung,
Lee Seunghoon,
Hong Yonggeun
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.877.17
Subject(s) - melatonin , neurogenesis , medicine , endocrinology , ischemia , stroke (engine) , anesthesia , neuroscience , psychology , mechanical engineering , engineering
Ischemic stroke results from sudden decrease or loss of blood flow to the brain, resulting in damage to neurological function and neuronal networks, cognition. The purpose of this study, we determined whether melatonin and/or treadmill exercise could induce neurogenesis, thereby promoting functional recovery in ischemic brain. Following the MCAo, Sprague‐Dawley (SD) rats were randomly divided into control (Con), MCAo, MCAo+Exercise (MCAo+Ex), MCAo+Melatonin (MCAo+MT), Melatonin combined Exercise in MCAo (MCAo+MT+Ex). The 8 week old SD rats were treated twice daily with melatonin (10 mg/kg) at 17:00 and 19:00, and trained twice daily with treadmill exercise (20 m/min, 6 days/week) at 17:00 and 22:00. At the Golgi‐cox staining, dendrite density in the MCAo+MT+Ex group was higher than in MCAo group. We confirmed that MCAo+MT+ME group was significantly recovered the neurological symptom in behavioral assessment (p<.01). Moreover, MCAo+MT and MCAo+MT+Ex were significantly increased both DCx and GFAP mRNA expression. In conclusion, we suggest that melatonin with and without treadmill exercise intervention enhanced neurogenesis and neuronal cell reconstruction in damaged brain lesions, thereby induced improvement of neurological dysfunction in animal model. Key words: Melatonin, Treadmill exercise, Neurogenesis, Apoptosis, Focal cerebral ischemia