Journal of Capital Medical University ›› 2023, Vol. 44 ›› Issue (1): 54-61.doi: 10.3969/j.issn.1006-7795.2023.01.009

• Basic and Clinical Research on Cerebrovascular Diseases • Previous Articles     Next Articles

Limb remote ischemic perconditioning combined with remote ischemic postconditioning promotes neurogenesis in rat models of ischemic stroke

Qin Linhui1, Li Ning1, Yang Yu2, Yang Yong2, Ren Changhong1*   

  1. 1. Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    2. School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100096, China
  • Received:2022-11-01 Online:2023-02-21 Published:2023-01-13
  • Contact: *E-mail:rench@xwhosp.org
  • Supported by:
    National Natural Science Foundation of China (81971114, 82274401).

Abstract: Objective To explore comfirm the effect of limb remote ischemic per-conditioning (PerC) combined with post-conditioning (PostC) on neurogenesis after ischemic stroke, and to explore the effect of PerC combined with PostC on the rate-limiting enzyme of fatty acid β-oxidation (FAO): carnitine palmitoyl transferase 1A (CPT1A). Methods Adult male Sprague Dawley rats were subjected to middle cerebral artery occlusion (MCAO). Limb remote ischemic conditioning was applied 30 min after the MCAO model, followed by repeated short episodes of remote ischemic conditioning 24 h after reperfusion (post-conditioning). The neurogenesis in the subependymal ventricular zone(SVZ) region was analyzed with immunohistochemistry staining, and the expression of CPT1A was analyzed with enzyme linked immunosorbent assay(ELISA). Results PerC+PostC treatment significantly improved neurological function and increased the number of neural stem cells (NSCs) and the number of cells that migrated to the infarct area compared to the MCAO and PerC/PostC groups. Pearson correlation analysis showed that the number of neural stem cells had a negative correlation with neurological function. However, the number of apoptotic NSCs that migrated to the basal ganglia did not differ significantly between groups. Further mechanism studies showed that the treatment with PerC+PostC significantly increased the protein level of CPT1A. Conclusion PerC combined with PostC treatment can improve neurological function by increasing the number of NSCs. FAO of NSCs may be one of its mechanisms to promote the migration of NSCs.

Key words: ischemic stroke, limb remote ischemic conditioning, neurogenesis, fatty acid β-oxidation

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