Differing chemical compositions of three teas may explain their different effects on acute blood pressure in spontaneously XXXX @entity35 .

@entity1 @entity11559 @entity101 @entity70778 @entity1425 @entity5834 @entity35840 @entity2441 @entity61174 @entity35 @entity1063
BACKGROUND: Heavy tea consumption is suggested to be unsuitable for @entity101 @entity1 . However, the bioactive substances in different varieties of tea leaves are very different. This study compares the effects of three Chinese teas  -  @entity2441 , C. ptilophylla and C. assamica var. kucha  -  on blood pressure (BP) and heart rate in spontaneously @entity101 @entity35 (SHRs). RESULTS: Intragastric administration of @entity2441 extract led to an acute @entity101 (SBP), diastolic blood pressure (DBP) and heart rate in SHRs. However, C. ptilophylla and C. assamica var. kucha exerted no obvious influences on SBP, @entity11559 or heart rate. Similar to the extract of @entity2441 , intragastric administration of @entity5834 also led to an acute increase in BP and heart rate in SHRs. In contrast, @entity35840 and @entity70778  -  @entity61174 predominantly contained in C. ptilophylla and C. assamica var. kucha, respectively  -  had no pressor effects. The effect of @entity5834 on BP was related to the regulation of plasma @entity1425 and @entity1063 levels in SHRs. CONCLUSION: The different effects of @entity2441 , C. ptilophylla and C. assamica var. kucha on BP might be explained, at least partially, by the differences in the varieties and contents of @entity61174 .    2014 Society of Chemical Industry.
