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Ann. N. Y. Acad. Sci. · Dec 1998
Coordinated role of vasoactive intestinal peptide and nitric oxide in cardioprotection.
- D K Das, R Kalfin, N Maulik, and R M Engelman.
- Department of Surgery, University of Connecticut School of Medicine, Farmington 06030-1110, USA. DDAS@NEURON.UCHC.EDU
- Ann. N. Y. Acad. Sci. 1998 Dec 11;865:297-308.
AbstractThe 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 mM VIP (Group II); 3 mM 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.
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