REGULATION OF AUTOPHAGY BY AMP-ACTIVATED PROTEIN KINASE/ SIRTUIN 1 PATHWAY REDUCES SPINAL CORD NEURONS DAMAGE

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YAN PENG; BAI LIANGJIE; LU WEI; GAO YUZHONG; BI YUNLONG; LV GANG

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Journal: Iranian Journal of Basic Medical Sciences Year:2017 | Volume:20 | Issue:9 Page(s): 1029-1036

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Title

REGULATION OF AUTOPHAGY BY AMP-ACTIVATED PROTEIN KINASE/ SIRTUIN 1 PATHWAY REDUCES SPINAL CORD NEURONS DAMAGE

Author(s)

Keywords

AMPK/SIRT1 PATHWAY

AUTOPHAGY FLUX

P62

RESVERATROL

SPINAL CORD INJURY

Abstract

Objective(s): AMP-activated protein kinase/sirtuin 1 (AMPK/SIRT1) signaling pathway has been proved to be involved in the regulation of autophagy in various models. The aim of this study was to evaluate the effect of AMPK/SIRT1 PATHWAY on autophagy after SPINAL CORD INJURY (SCI).Materials and Methods: The SCI model was established in rats in vivo and the primary spinal cord neurons were subjected to mechanical injury (MI) in vitro. The apoptosis in spinal cord tissue and neurons was assessed by TUNEL staining and Hoechst 33342 staining, respectively. The autophagy-related proteins levels were detected by Western blot. The activation of AMPK/SIRT1 PATHWAY was determined by Western blot and immunohistochemical staining.Results: We found that the apoptosis of spinal cord tissue and cell damage of spinal cord neurons was obvious after the trauma. The ratio of LC3II/LC3I and level of P62 were first increased significantly and then decreased after the trauma in vivo and in vitro, indicating the defect in autophagy. The levels of p-AMPK and SIRT1 were increased obviously after the trauma in vivo and in vitro. Further activation of the AMPK/SIRT1 PATHWAY by pretreatment with RESVERATROL, a confirmed activator of the AMPK/SIRT1 PATHWAY, alleviated the cell damage and promoted the AUTOPHAGY FLUX via downregulation of P62 in spinal cord neurons at 24 hr after MI.Conclusion: Our results demonstrate that regulation of autophagy by AMPK/SIRT1 PATHWAY can restrain spinal cord neurons damage, which may be a potential intervention of SCI.

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APA: Copy

YAN, PENG, BAI, LIANGJIE, LU, WEI, GAO, YUZHONG, BI, YUNLONG, & LV, GANG. (2017). REGULATION OF AUTOPHAGY BY AMP-ACTIVATED PROTEIN KINASE/ SIRTUIN 1 PATHWAY REDUCES SPINAL CORD NEURONS DAMAGE. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, 20(9), 1029-1036. SID. https://sid.ir/paper/695826/en

Vancouver: Copy

YAN PENG, BAI LIANGJIE, LU WEI, GAO YUZHONG, BI YUNLONG, LV GANG. REGULATION OF AUTOPHAGY BY AMP-ACTIVATED PROTEIN KINASE/ SIRTUIN 1 PATHWAY REDUCES SPINAL CORD NEURONS DAMAGE. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES[Internet]. 2017;20(9):1029-1036. Available from: https://sid.ir/paper/695826/en

IEEE: Copy

PENG YAN, LIANGJIE BAI, WEI LU, YUZHONG GAO, YUNLONG BI, and GANG LV, “REGULATION OF AUTOPHAGY BY AMP-ACTIVATED PROTEIN KINASE/ SIRTUIN 1 PATHWAY REDUCES SPINAL CORD NEURONS DAMAGE,” IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, vol. 20, no. 9, pp. 1029–1036, 2017, [Online]. Available: https://sid.ir/paper/695826/en

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