Open Access

TIMP3 attenuates cerebral ischemia/reperfusion‑induced apoptosis and oxidative stress in neurocytes by regulating the AKT pathway

  • Authors:
    • Linglei Meng
    • Yongting Zhang
    • Demao Li
    • Xinfang Shang
    • Xuejia Hao
    • Xin Chen
    • Fengxiao Gao
  • View Affiliations

  • Published online on: July 8, 2021     https://doi.org/10.3892/etm.2021.10405
  • Article Number: 973
  • Copyright: © Meng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Ischemic stroke seriously threatens human health and creates a large social burden. The present study investigated whether tissue inhibitor of metalloproteinases‑3 (TIMP3) prevented cerebral ischemia/reperfusion (I/R), with the aim to explore the underlying mechanism. A transient middle cerebral artery occlusion model was conducted in mice, and oxygen glucose deprivation and reoxygenation (OGD/R) was investigated in PC12 cells to mimic cerebral ischemia‑reperfusion injury (CIRI). Western blotting was used to determine the expression of TIMP3, Bax, Bcl‑2 and AKT. TUNEL was used to detect apoptosis in cerebral tissues or cultured PC12 cells. Expression levels of reactive oxygen species (ROS), superoxide dismutase (SOD) and malondialdehyde (MDA) were detected to reveal oxidative stress. The results demonstrated that TIMP3 expression was significantly decreased after I/R in vivo or OGD/R in vitro, and the number of TUNEL‑positive cells was reduced by the overexpression of TIMP3. The attenuation of Bax/Bcl‑2 ratio in OGD/R‑induced PC12 cells suppressed the expression levels of ROS and MDA; while also elevating SOD activity in the OGD/R‑induced neurocytes in vitro. In addition, TIMP3‑overexpression reversed the downregulation of phosphorylated‑AKT (Thr308 and Ser473) in OGD/R‑treated PC12 cells. However, the anti‑apoptotic and anti‑oxidative stress roles of TIMP3 in OGD/R‑induced PC12 cells were partially abolished after treatment with the AKT inhibitor, AZD5363. Overall, TIMP3 exerted an anti‑apoptotic and anti‑oxidative stress role in CIRI through the AKT pathway, which may be a potential therapeutic target for the treatment of CIRI.
View Figures
View References

Related Articles

Journal Cover

September-2021
Volume 22 Issue 3

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

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Meng L, Zhang Y, Li D, Shang X, Hao X, Chen X and Gao F: TIMP3 attenuates cerebral ischemia/reperfusion‑induced apoptosis and oxidative stress in neurocytes by regulating the AKT pathway. Exp Ther Med 22: 973, 2021
APA
Meng, L., Zhang, Y., Li, D., Shang, X., Hao, X., Chen, X., & Gao, F. (2021). TIMP3 attenuates cerebral ischemia/reperfusion‑induced apoptosis and oxidative stress in neurocytes by regulating the AKT pathway. Experimental and Therapeutic Medicine, 22, 973. https://doi.org/10.3892/etm.2021.10405
MLA
Meng, L., Zhang, Y., Li, D., Shang, X., Hao, X., Chen, X., Gao, F."TIMP3 attenuates cerebral ischemia/reperfusion‑induced apoptosis and oxidative stress in neurocytes by regulating the AKT pathway". Experimental and Therapeutic Medicine 22.3 (2021): 973.
Chicago
Meng, L., Zhang, Y., Li, D., Shang, X., Hao, X., Chen, X., Gao, F."TIMP3 attenuates cerebral ischemia/reperfusion‑induced apoptosis and oxidative stress in neurocytes by regulating the AKT pathway". Experimental and Therapeutic Medicine 22, no. 3 (2021): 973. https://doi.org/10.3892/etm.2021.10405