Ischemic preconditioning increases GSK-3β/β-catenin levels and ameliorates liver ischemia/reperfusion injury in rats

  • Authors:
    • Yichao Yan
    • Guangying Li
    • Xiaofeng Tian
    • Yingjiang Ye
    • Zhidong Gao
    • Jihong Yao
    • Feng Zhang
    • Shan Wang
  • View Affiliations

  • Published online on: March 23, 2015     https://doi.org/10.3892/ijmm.2015.2153
  • Pages: 1625-1632
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Abstract

Ischemic preconditioning (IPC) ameliorates ischemia/reperfusion (I/R) injury in a number of organs, and the glycogen synthase kinase-3β (GSK-3β)/β-catenin signaling pathway regulates I/R-induced proliferation and apoptosis in the central nervous system and heart. However, the function of this signaling pathway in IPC during liver I/R remains unclear. Thus, in this study, we aimed to investigte the role of the GSK-3β/β-catenin pathway during I/R and following ischemic preconditioning. For this purpose, 30 Sprague-Dawley rats were randomly divided into the sham-operated, the I/R and the IPC groups (n=10). Following reperfusion, liver pathology, as well as alanine aminotransferase (ALT), aspartate aminotransferase (AST), maleic dialdehyde (MDA) and superoxide dismutase (SOD) levels were assessed. Western blot analysis was performed to quantify the GSK-3β, Ser9-phospho-GSK-3β (p-GSK-3β), cytosolic and nuclear β-catenin, vascular endothelial growth factor (VEGF), Bcl-2 and survivin levels. In addition, the Bcl-2 and survivin mRNA levels were assessed by RT-qPCR. Compared with the sham-operated group, I/R increased serum ALT, AST and MDA activity and decreased SOD levels, while IPC significantly decreased serum ALT, AST and MDA activity and increased SOD levels, compared with the I/R group. Simultaneously, I/R increased p-GSK-3β protein expression, and decreased Bcl-2 and survivin protein and mRNA levels. IPC further increased the protein expression of p-GSK-3β, and also increased cytosolic and nuclear β-catenin and VEGF expression compared with the I/R group; the expression of Bcl-2 and survivin was also increased by IPC, both at the mRNA and protein level. The total GSK-3β expression remained unaltered in all the groups. In conclusion, our data demonstrate that IPC exerts protective effects against liver injury induced by I/R and activates the GSK-3β/β-catenin signaling pathway.
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June-2015
Volume 35 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Yan Y, Li G, Tian X, Ye Y, Gao Z, Yao J, Zhang F and Wang S: Ischemic preconditioning increases GSK-3β/β-catenin levels and ameliorates liver ischemia/reperfusion injury in rats. Int J Mol Med 35: 1625-1632, 2015.
APA
Yan, Y., Li, G., Tian, X., Ye, Y., Gao, Z., Yao, J. ... Wang, S. (2015). Ischemic preconditioning increases GSK-3β/β-catenin levels and ameliorates liver ischemia/reperfusion injury in rats. International Journal of Molecular Medicine, 35, 1625-1632. https://doi.org/10.3892/ijmm.2015.2153
MLA
Yan, Y., Li, G., Tian, X., Ye, Y., Gao, Z., Yao, J., Zhang, F., Wang, S."Ischemic preconditioning increases GSK-3β/β-catenin levels and ameliorates liver ischemia/reperfusion injury in rats". International Journal of Molecular Medicine 35.6 (2015): 1625-1632.
Chicago
Yan, Y., Li, G., Tian, X., Ye, Y., Gao, Z., Yao, J., Zhang, F., Wang, S."Ischemic preconditioning increases GSK-3β/β-catenin levels and ameliorates liver ischemia/reperfusion injury in rats". International Journal of Molecular Medicine 35, no. 6 (2015): 1625-1632. https://doi.org/10.3892/ijmm.2015.2153