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The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway

  • Authors:
    • Tu Wang
    • Xiaoxu Sun
    • Haipeng Cui
    • Kai Liu
    • Juan Zhao
  • View Affiliations / Copyright

    Affiliations: Department of Pathophysiology, Chengde Medical University, Chengde, Hebei 067000, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1097-1106
    |
    Published online on: January 13, 2020
       https://doi.org/10.3892/mmr.2020.10934
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Abstract

The aim of the present study was to investigate the effect of urantide on collagen metabolism in the hearts of rats with atherosclerosis (AS) by evaluating the expression of Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) pathway constituents. Urantide was delivered to rats with AS via tail vein injection for 3, 7 and 14 days. Serological indicators were identified by an automated biochemical analyzer. Histomorphological changes in the cardiac tissue of rats were observed by pathological staining techniques. The expression of genes and proteins was assessed using reverse transcription‑quantitative PCR and western blot analysis, respectively. Localization of proteins was detected by immunofluorescence. Overexpression of urotensin II (UII) and its receptor, G protein‑coupled receptor 14 (GPR14), was observed in the hearts of rats with AS and the expression of both proteins significantly declined after urantide administration. Triglyceride, total cholesterol, low‑density lipoprotein, high‑density lipoprotein and calcium levels were improved in rats with AS following treatment with urantide. Notably, urantide was able to antagonize the UII/GPR14 system. Urantide treatment resulted in markedly decreased expression levels of matrix metalloproteinase 2 (MMP‑2), collagen type I/III, and genes and proteins in the JAK2/STAT3 pathway. By contrast, TIMP metallopeptidase inhibitor 2 (TIMP‑2) levels were increased. In addition, the MMP‑2/TIMP‑2 protein ratio was significantly decreased in rats treated with urantide compared with AS rats with no urantide treatment. Constituents of the JAK2/STAT3 pathway and collagen type I/III were found to be localized in the diseased tissue and blood vessels of the hearts of rats with AS. In conclusion, urantide was able to effectively block the UII/GPR14 system by regulating the JAK2/STAT3 pathway and collagen metabolism. Inhibition of the UII/GPR14 system may prevent and potentially treat atherosclerotic myocardial fibrosis. Based on the current results, it was hypothesized that collagen metabolism may be associated with the JAK2/STAT3 pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Wang T, Sun X, Cui H, Liu K and Zhao J: The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway. Mol Med Rep 21: 1097-1106, 2020.
APA
Wang, T., Sun, X., Cui, H., Liu, K., & Zhao, J. (2020). The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway. Molecular Medicine Reports, 21, 1097-1106. https://doi.org/10.3892/mmr.2020.10934
MLA
Wang, T., Sun, X., Cui, H., Liu, K., Zhao, J."The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway". Molecular Medicine Reports 21.3 (2020): 1097-1106.
Chicago
Wang, T., Sun, X., Cui, H., Liu, K., Zhao, J."The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway". Molecular Medicine Reports 21, no. 3 (2020): 1097-1106. https://doi.org/10.3892/mmr.2020.10934
Copy and paste a formatted citation
x
Spandidos Publications style
Wang T, Sun X, Cui H, Liu K and Zhao J: The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway. Mol Med Rep 21: 1097-1106, 2020.
APA
Wang, T., Sun, X., Cui, H., Liu, K., & Zhao, J. (2020). The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway. Molecular Medicine Reports, 21, 1097-1106. https://doi.org/10.3892/mmr.2020.10934
MLA
Wang, T., Sun, X., Cui, H., Liu, K., Zhao, J."The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway". Molecular Medicine Reports 21.3 (2020): 1097-1106.
Chicago
Wang, T., Sun, X., Cui, H., Liu, K., Zhao, J."The peptide compound urantide regulates collagen metabolism in atherosclerotic rat hearts and inhibits the JAK2/STAT3 pathway". Molecular Medicine Reports 21, no. 3 (2020): 1097-1106. https://doi.org/10.3892/mmr.2020.10934
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