Pejler, Gunnar
- Department of Animal Biosciences, Swedish University of Agricultural Sciences
- Uppsala University
Research article2016Peer reviewedOpen access
Tejada, Thor; Pejler, Gunnar; Åbrink, Magnus; Husain, Ahsan
Heart disease is a leading cause of death in adults. Here, we show that a few days after coronary artery ligation and reperfusion, the ischemia-injured heart elaborates the cardioprotective polypeptide, insulin-like growth factor-1 (IGF-1), which activates IGF-1 receptor prosurvival signaling and improves cardiac left ventricular systolic function. However, this signaling is antagonized by the chymase, mouse mast cell protease 4 (MMCP-4), which degrades IGF-1. We found that deletion of the gene encoding MMCP-4 (Mcpt4), markedly reduced late, but not early, infarct size by suppressing IGF-1 degradation and, consequently, diminished cardiac dysfunction and adverse structural remodeling. Our findings represent the first demonstration to our knowledge of tissue IGF-1 regulation through proteolytic degradation and suggest that chymase inhibition may be a viable therapeutic approach to enhance late cardioprotection in post-ischemic heart disease.
insulin-like growth factor-1; chymase; mouse mast cell protease 4; ischemia-reperfusion injury; cardioprotection
Proceedings of the National Academy of Sciences
2016, volume: 113, number: 25, pages: 6949-6954
Publisher: NATL ACAD SCIENCES
Future Animal Health and Welfare (until Jan 2017)
Immunology in the medical area
https://res.slu.se/id/publ/79422