Korean J Thorac Cardiovasc Surg.  2008 Oct;41(5):541-549.

In Vitro Effects of Nitroglycerin, Nicardipine, Verapamil, and Papaverine on Rabbit Brachial and Celiac Arterial Tone

• Shinn SH
• Kim YH
• Seo JK
• Kim JH
• Chung WS
• Jeon YB
• Chang BC
• Jang HJ

Abstract

BACKGROUND: Vasoconstrictor-induced reduction in arterial graft diameter can cause significant flow deprivation. The aim of this study was to evaluate the effect of vasodilator pretreatment on vasoconstrictor-induced blood vessel spasm in vitro. MATERIAL AND METHOD: Rabbit brachial arteries (BA) and celiac arteries (CA) were cut into rings (3~4 mm) and suspended with a force displacement transducer (TSD 125C(R), Biopac Inc. USA) in a tissue bath filled with 5 mL modified Krebs solution bubbled with 5% CO2 and 95% O2 at 38degrees C. The rings were contracted with vasoconstrictors, and the developed tension changes were considered control values. The rings were then pretreated with 30micrometer nitroglycerin, nicardipine, verapamil, and papaverine, respectively, for 40 minutes and rinsed with the physiologic buffered salt solution three times every 15 min. The vasoconstrictor-induced tension changes after the previous procedure were considered experimental values. Data are expressed as the percentage tension induced by vasoconstrictors before and after pretreatment with vasodilators. RESULT: Nicardipine depressed vasoconstriction induced by norepinephrine, angiotensin II (AII), and U46619 in both the BA and the CA more significantly than did nitroglycerin (p<0.01) and verapamil (p<0.05). Verapamil depressed vasoconstriction induced by 5-hydroxytryptamine (5HT), AII, and U46619 in the BA and by 5HT in the CA more significantly than did nitroglycerin (p<0.01). CONCLUSION: These findings suggest that both nicardipine and verapamil effectively depressed vasoconstrictor action. Nicardipine is thought to be more effective than verapamil for the prevention of vasoconstrictor action.

Keyword

Nitroglycerin; Nicardipine; Verapamil

MeSH Terms

15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid
Angiotensin II
Baths
Blood Vessels
Brachial Artery
Celiac Artery
Contracts
Displacement (Psychology)
Glycosaminoglycans
Isotonic Solutions
Nicardipine
Nitroglycerin
Norepinephrine
Papaverine
Serotonin
Spasm
Transducers
Transplants
Vasoconstriction
Vasoconstrictor Agents
Vasodilator Agents
Verapamil
15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid
Angiotensin II
Glycosaminoglycans
Isotonic Solutions
Nicardipine
Nitroglycerin
Norepinephrine
Papaverine
Serotonin
Vasoconstrictor Agents
Vasodilator Agents
Verapamil