Cyclic azapeptide cluster of differentiation-36 receptor modulator attenuates left ventricular injury and temporarily reduces long-chain fatty acid accumulation after myocardial ischemia-reperfusion in mice
Radmannia, N.; Gauvin, J.; Huynh, D. N.; Menard, L.; Daneault, C.; Ahsanullah, A.; Carpentier, A. C.; Lubell, W. D.; Ruiz, M.; Ong, H.; Marleau, S.; Gravel, S.-P.
Show abstract
Ischemic heart disease remains a leading global cause of death. We investigated the cardio-protective effects of the selective cluster of differentiation-36 receptor (CD36) modulator azapeptide MPE-298 in a mouse model of myocardial ischemia-reperfusion. Before reperfusion, a single intravenous dose of azapeptide MPE-298 reduced infarct size by 37% and transiently decreased left ventricular (LV) long-chain fatty acid (LCFA) accumulation, independently of saturation status. Metabolomic profiling revealed shifts in amino acids involved in energy production and antioxidant defense. Gene expression analysis showed transient modulation of oxidative stress and inflammation in both heart and adipose tissue. Modulation of CD36 by azapeptide MPE-298 exhibited therapeutic potential for treating acute myocardial ischemia and reperfusion by supporting metabolic recovery and limiting excess LCFA uptake. O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=171 SRC="FIGDIR/small/674351v1_ufig1.gif" ALT="Figure 1"> View larger version (38K): org.highwire.dtl.DTLVardef@11aa899org.highwire.dtl.DTLVardef@132fc5borg.highwire.dtl.DTLVardef@55c32forg.highwire.dtl.DTLVardef@81585f_HPS_FORMAT_FIGEXP M_FIG C_FIG
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