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Coordinated Role of Vasoactive Intestinal Peptide and Nitric Oxide in Cardioprotection a
Author(s) -
DAS DIPAK K.,
KALFIN RENI,
MAULIK NILANJANA,
ENGELMAN RICHARD M.
Publication year - 1998
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1998.tb11190.x
Subject(s) - vasoactive intestinal peptide , cardioprotection , nitric oxide , vasoactive , medicine , chemistry , arginine , endocrinology , pharmacology , ischemia , biochemistry , receptor , neuropeptide , amino acid
A bstract : The present study sought to examine the interrelationship between nitric oxide (NO) and vasoactive intestinal peptide (VIP) in myocardial protection. Isolated rat hearts were perfused for 15 min with buffer only (Group I); 0.3 μM VIP (Group II); 3 μM L‐arginine (a precursor of NO) (Group III); VIP and aminoguanidine (iNOS blocker) (Group IV); or L‐arginine plus VIP 10‐28 (VIP inhibitor) (Group V). Each heart was then made globally ischemic for 30 min followed by 2 h reperfusion. Both VIP and NO were found to provide cardioprotection during ischemia and reperfusion. However, the beneficial effects of VIP and NO were reduced by inhibition of NO and VIP, respectively, suggesting that cardioprotection by VIP is modulated by NO and vice versa. The results of this study suggested a coordinated regulation by cardioprotection by NO and VIP.