Effects of proanthocyanidins on contractile activity of aortic smooth muscle and platelet aggregation in experimental animals / 中国应用生理学杂志
Chinese Journal of Applied Physiology
;
(6): 383-386, 2005.
Article
in Chinese
| WPRIM
| ID: wpr-254653
ABSTRACT
<p><b>AIM</b>To study effects of proanthocyanidins (PA) on contractile activity of isolated aortic smooth muscle in rats and rabbit platelet aggregation.</p><p><b>METHODS</b>Isolated rat aortic muscle rings were adopted to observe the effects of PA on their contraction induced by noradrenaline (NA) or KCl, and their tensions were recorded by BL-310 experimental system of biological function. Rabbit platelet aggregation induced by arachidonic acid (AA), adenosine diphosphate (ADP), and collagen (Coll) was assayed by turbidimetry.</p><p><b>RESULTS</b>PA could significantly inhibit the contraction induced by NA (10(-6) mol/L), low the concentration-response curves of NA and the maximal response on the endothelium-intact or endothelium-denuded aortic rings. But PA couldn't relax the aortic rings precontracted with KCl and had no influence on rabbit platelet aggregation induced by AA, ADP, and Coll.</p><p><b>CONCLUSION</b>PA can inhibit the contraction induced by NA but not by KCl on isolated rat aortic rings. It also has no influence on rabbit platelet aggregation.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Aorta
/
Pharmacology
/
Physiology
/
Potassium Chloride
/
Seeds
/
In Vitro Techniques
/
Norepinephrine
/
Chemistry
/
Platelet Aggregation
/
Rats, Wistar
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Applied Physiology
Year:
2005
Type:
Article
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