ABSTRACT
Type 2 myocardial infarction is an important part in all types of myocardial infarction , with the characteristics of high incidence , varied clinical manifestations and high mortality .For type 2 myocardial infarction, the pathophysiological mechanism is not fully clear yet and the curative efficacy is not definite.This article reviews the recent clinical research progress on type 2 myocardial infarction.
ABSTRACT
Objective To explore the distribution and accumulation regularity of catalpol in leaves during the growth of Rehmannia glutinosa var. huechingensis. Methods HPLC method was used to determine the catalpol content in fresh medicinal materials with acetonitrile-water (0.6:99.4) as the mobile phase and 210 nm as detection wavelength. Regression equation was Y = 377.26X - 1. 054 3. The water contents of the leaves at different developmental stages were also determined, so that the catalpol content could be achieved on dry matter basis.Results Both leaves and root tubers contained catalpol. The content of catalpol in leaves rised up to peak rapidly in August or September and then degraded gradually until leaves wither and fall. The content of catalpol in root tubers increased with the growth of root tubers and reached peak until harvest. Conclusions The variation of catalpol is caused by the physiological regulation of plants. The leaves contain a considerable amount of catalpol. Further study is needed to benefit the comprehensive utilization of Rehmannia glutinosa Libosch.