Abstract |
We investigated the effects of CD-832 ((4R)-(-)-2-(nicotinoyl-amino)ethyl 3-nitroxypropyl 1,4-dihydro-2,6-dimethyl-4,3-nitrophenyl, 3,5-pyridine dicarboxylate), a dihydropyridine derivative with a nitrate ester moiety, on contractile responses in rabbit femoral arteries and veins. CD-832 (10(-8) to 10(-6) M and nifedipine inhibited the 64 mM KCl-induced and 10(-6) M norepinephrine-induced contractions of rabbit femoral arteries, while nitro compounds had no effect on the contractions. CD-832 (10(-8) to 10(-6) M) and nitro compounds inhibited the 10(-6) M norepinephrine-induced contractions in rabbit femoral veins, while other Ca2+ channel antagonists had little effect. The inhibitory effects of CD-832 (10(-7) M) on norepinephrine-induced contractions were antagonized by treatment with methylene blue (10(-5) M). These results indicate that CD-832 potently relaxes venous smooth muscle, and that it may be a useful agent for the treatment of angina pectoris.
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Authors | H Yamaura, N Miyata, K Takahashi, K Tsuchida, S Otomo |
Journal | European journal of pharmacology
(Eur J Pharmacol)
Vol. 260
Issue 2-3
Pg. 269-72
(Aug 01 1994)
ISSN: 0014-2999 [Print] Netherlands |
PMID | 7988656
(Publication Type: Comparative Study, Journal Article)
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Chemical References |
- CD 832
- Calcium Channel Blockers
- Niacinamide
- Potassium Chloride
- Nifedipine
- Norepinephrine
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Topics |
- Animals
- Calcium Channel Blockers
(pharmacology)
- Dose-Response Relationship, Drug
- Femoral Artery
(drug effects)
- Femoral Vein
(drug effects)
- In Vitro Techniques
- Male
- Muscle Contraction
(drug effects)
- Muscle, Smooth, Vascular
(drug effects)
- Niacinamide
(analogs & derivatives, pharmacology)
- Nifedipine
(analogs & derivatives, pharmacology)
- Norepinephrine
(pharmacology)
- Potassium Chloride
(pharmacology)
- Rabbits
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