کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9009837 1124087 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Ya-hom on blood pressure in rats
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی داروشناسی
پیش نمایش صفحه اول مقاله
Effects of Ya-hom on blood pressure in rats
چکیده انگلیسی
The effects of Ya-hom, a traditional Thai herbal formulation, on blood pressure were evaluated to verify its use for fainting treatment. Ya-hom has several recipes, which are composed of different medicinal plants in varying ratio. We have selected the most popular commercial preparation to determine the effect on the blood pressure in rats. The water extract of Ya-hom at doses of 0.2, 0.4, 0.6 and 0.8 g/kg initially transiently decreased pressure and over time, increased blood pressure. The duration of the Ya-hom effect on decreasing and increasing blood pressure was dose dependent. The time to maximal effect of Ya-hom on increasing blood pressure was also dose dependent. Phentolamine attenuated the blood pressure decreasing effect but did not affect the blood pressure increasing effect of Ya-hom. Ya-hom was previously shown to increase aortic ring contraction, which was partially inhibited by phentolamine, and increased atrial contraction. It is possible that phentolamine inhibits the effect of Ya-hom on vascular smooth muscle contraction resulting in a prominent positive inotropic effect. This may be the same reason that phentolamine does not influence the effect of Ya-hom on increasing blood pressure. The dominant effect of Ya-hom on increasing blood pressure supports the use of Ya-hom for the treatment of fainting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Ethnopharmacology - Volume 97, Issue 3, 21 March 2005, Pages 503-508
نویسندگان
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