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Calpastatin peptide attenuates early brain injury following experimental subarachnoid hemorrhage

  • Authors:
    • Fei Teng
    • Yanxin Yin
    • Jia Guo
    • Ming Jiang
  • View Affiliations

  • Published online on: February 10, 2020     https://doi.org/10.3892/etm.2020.8510
  • Pages: 2433-2440
  • Copyright: © Teng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Calpain activation may have an important role in early brain injury (EBI) following subarachnoid hemorrhage (SAH). The present study investigated the effects of the calpastatin peptide, a cell‑permeable peptide that functions as a potent inhibitor of calpain, on EBI in a rat SAH model. It was revealed that calpastatin peptide treatment significantly reduced SAH‑induced body weight loss and neurological deficit at 72 h when compared with untreated SAH controls. Furthermore, the quantification of brain water content and the extravasation of Evans blue dye revealed a significant reduction in SAH‑induced brain edema and blood‑brain barrier permeability at 72 h due to treatment with the calpastatin peptide when compared with untreated SAH controls. Finally, calpastatin peptide treatment significantly attenuated the protein levels of Bax, cytochrome c, cleaved caspase‑9 and cleaved caspase‑3, and reduced the number of terminal deoxynucleotidyl transferase dUTP nick end labelling‑positive cells in the basal cortex at 72 h after SAH when compared with untreated SAH controls. These results indicated that the calpastatin peptide may ameliorate EBI following SAH in rat models.
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April-2020
Volume 19 Issue 4

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Teng F, Yin Y, Guo J and Jiang M: Calpastatin peptide attenuates early brain injury following experimental subarachnoid hemorrhage. Exp Ther Med 19: 2433-2440, 2020
APA
Teng, F., Yin, Y., Guo, J., & Jiang, M. (2020). Calpastatin peptide attenuates early brain injury following experimental subarachnoid hemorrhage. Experimental and Therapeutic Medicine, 19, 2433-2440. https://doi.org/10.3892/etm.2020.8510
MLA
Teng, F., Yin, Y., Guo, J., Jiang, M."Calpastatin peptide attenuates early brain injury following experimental subarachnoid hemorrhage". Experimental and Therapeutic Medicine 19.4 (2020): 2433-2440.
Chicago
Teng, F., Yin, Y., Guo, J., Jiang, M."Calpastatin peptide attenuates early brain injury following experimental subarachnoid hemorrhage". Experimental and Therapeutic Medicine 19, no. 4 (2020): 2433-2440. https://doi.org/10.3892/etm.2020.8510