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- W2519426072 abstract "More recent evidence in my lab shows that, in addition to the pathological role of MMP-2 in I/R, MMP-2 can also regulate MLC levels under physiological conditions. I have evidence showing that robust inhibition of MMP-2 activity increases MLC levels (impairing MLC turnover) resulting in increased contractility above homeostatic levels (normal). This emphasizes the importance of only targeting pathological activity while maintaining physiological homeostasis. I have also shown that I/R increases phosphorylation and nitration/nitrosylation of MLC proteins leading to increased degradation by MMP-2. These MLC modifications play important physiological roles in addition to targeting the protein for degradation. Nitration of MLC has been reported in the process of vascular aging, and the phosphorylation of MLC2 controls the sensitivity of myofilaments to calcium in the regulation of heart contractility. Thus, maintaining thephysiological activity of MMP-2 and functional MLC modifications while simultaneously providing protection from I/R is a difficult set of tasks. I suggest, that in addition to the existing approaches in clinical practice for protection and treatment of heart injury from MI or I/R; simultaneous pharmacological suppression of MMP-2 activity and MLC nitration/nitrosylation/phosphorylation will provide improved protection of the heart from ischemic injury while limiting drug associated side effects. My studies have shown that a mixture of low concentrations of potential therapeutic agents (inhibitors of MMP-2 activity and MLC nitration/nitrosylation/ phosphorylation) act in a synergistic manner to provide protection from reperfusion injury. Thus, development of a “drug cocktail” or a “super pill” to protect the hearts of human patients from I/R injury may be a legitimate approach. Additional drugs that target different pathways should also be explored for their potential to act synergistically for ultimate protection. Drugs such as inhibitors of apoptosis, c-Jun N-terminal kinases (JNK), glycogen synthase kinase (GSK) or modulators of energy metabolism may also prove beneficial. Because the basic molecular and cellular mechanisms of all I/R injury and protection are essentially similar throughout the body, this concept is important to all pathologies involving I/R; including transplantation or reattachment of limbs." @default.
- W2519426072 created "2016-09-23" @default.
- W2519426072 creator A5052813429 @default.
- W2519426072 date "2015-01-01" @default.
- W2519426072 modified "2023-09-26" @default.
- W2519426072 title "Low-dose multi target suppression of cardiac ischemia/reperfusion pathology for improved physiological outcome" @default.
- W2519426072 doi "https://doi.org/10.4172/2161-1459.s1.006" @default.
- W2519426072 hasPublicationYear "2015" @default.
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