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Dimethylsulfoxide-soluble smoking particles and nicotine affect vascular contractibility.
- Source :
-
Archives of pharmacal research [Arch Pharm Res] 2009 Oct; Vol. 32 (10), pp. 1475-81. Date of Electronic Publication: 2009 Nov 08. - Publication Year :
- 2009
-
Abstract
- The aim is to study the effect of dimethylsulfoxide-soluble smoking particles (DSP) and nicotine on the contractility of rat mesenteric artery. The superior mesenteric artery segments were cultured with DSP or nicotine for 24 h. The vascular contractibility was recorded with myograph system. DSP 0.4 mL/L and nicotine 0.48 and 0.96 mg/L shifted the concentration-contractile curves induced by sarafotoxin 6c, a selective agonist for ET(B) receptor toward the left with increased E(max). DSP 0.4 mL/L and nicotine 0.96 mg/L shifted ET(A) receptor-mediated the concentration-contractile curves toward the left with increased E(max). However, nicotine 0.06 mg/L which is the equivalent concentration of nicotine in DSP 0.4 mL/L did not affect the curves and the E(max) mediated with ET(A) receptor and ET(B) receptor. DSP 0.2 and 0.4 mL/L shifted the concentration-contractile curves induced by noradrenaline toward the right with decreased E(max). Neither did nicotine 0.06 and 0.96 mg/L. Both DSP and nicotine shifted the concentration-contractile curves induced by 5-hydroxytryptamine (5-HT) toward the right parallely. DSP changed the phenotypes towards an increased efficacy of ET(A) receptor and ET(B) receptor, and a reduced efficacy of 5-HT receptor and alpha-adrenocceptor. The effects of DSP on ET(B) receptor, ET(A) receptor and alpha-adrenocceptor were independent of nicotine. The effect on 5-HT receptor was responsible to nicotine.
- Subjects :
- Animals
Dose-Response Relationship, Drug
Endothelin-1 pharmacology
Endothelium, Vascular drug effects
Endothelium, Vascular metabolism
Mesenteric Artery, Superior metabolism
Norepinephrine pharmacology
Organ Culture Techniques
Rats
Rats, Sprague-Dawley
Receptor, Endothelin A agonists
Receptor, Endothelin B agonists
Serotonin pharmacology
Solubility
Viper Venoms pharmacology
Dimethyl Sulfoxide chemistry
Mesenteric Artery, Superior drug effects
Nicotine toxicity
Tobacco Smoke Pollution adverse effects
Vasoconstriction drug effects
Vasodilation drug effects
Subjects
Details
- Language :
- English
- ISSN :
- 0253-6269
- Volume :
- 32
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Archives of pharmacal research
- Publication Type :
- Academic Journal
- Accession number :
- 19898813
- Full Text :
- https://doi.org/10.1007/s12272-009-2019-y