ABSTRACT
AIM To study the antithrombotic effects and mechanism of ethyl acetate fraction of Curcuma kwangsiensis S.G.Lee et C.F.Liang (CKEAF).METHODS To observe the antithrombotic effects of CKEAF on tail thrombotic mouse models and arteriovenous bypass thrombotic rat models induced by carrageenan,and in vivo thrombosis rat models induced by FeCl3.The serum levels of ET-1,6-keto-PGF1α,TXB2 in rats were measured by enzyme linked immunosorbent assay (ELISA),and the level of NO was determined by nitrate reductase method.Rat models of acute blood stasis were further established for hemorheological study.RESULTS CKEAF significantly decreased the number and length of blackened thrombotic tail of carrageenan-treated mice.Rat models shared significant wet weight loss in arteriovenous bypass thrombosis and in vivo thrombosis,increased levels of NO,6-keto-PGF1α,decreased levels of ET-1,TXB2,and decreased whole blood and plasma viscosity (rats of acute blood stasis model).CONCLUSION Significant antithrombotic effects by CKEAF may contribute to elevated levels of NO,6-keto-PGF1α,and decreased levels of ET-1,TXB2,and lowered whole blood and plasma viscosity.
ABSTRACT
<p><b>OBJECTIVE</b>To provide scientific methods for quality criterion by studying the chemical components of essential oil from Baeckea frutescens.</p><p><b>METHOD</b>The chemical components of essential oil from B. frutescens were identified by GC-MS-DS, TLC and capillary GC. The relative contents of main components were determined by area normalization.</p><p><b>RESULT</b>More than 50 peaks were separated, and 38 components were identified, which accounted for over 94% of the total GC peaks areas of the essential oil. The methods for quality evaluation of essential oil from B. frutescens by TLC and capillary GC were established.</p><p><b>CONCLUSION</b>The chemical components of essential oil from B. frutescens collected from different habitats and collecting periods have common characteristics as well as differences. Some components, such as linalool, can be used as a standard and chromatography fingerprint to analyze the quality of essential oil from B. frutescens.</p>