Response to Letter Regarding Article, “Ventricular Phosphodiesterase-5 Expression Is Increased in Patients With Advanced Heart Failure and Contributes to Adverse Ventricular Remodeling After Myocardial Infarction in Mice”

2009 
We appreciate the comments by Cingolani et al on a possible involvement of Na+/H+ exchanger (NHE-1) in signaling mechanisms downstream of cGMP that can mediate cardioprotection after myocardial infarction. These authors previously reported that NHE-1 expression and activity are increased after myocardial infarction in rats (as a result of myocardial acidosis) and that sustained …
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