Vasorelaxant effects of the extracts and some flavonoids from the buds of Coreopsis tinctoria.

Context: The buds of Coreopsis tinctoria Nutt (Compositae) are used in the treatment of hypertension in the Uyghur folk medicine in China.

Objective: To investigate vasorelaxant properties of extracts and some flavonoids from C. tinctoria (CT) and their underlying mechanisms in isolated rat thoracic aortic rings.

Hepatoprotective activities of a sesquiterpene-rich fraction from the aerial part of Cichorium glandulosum.

Background: Cichorium glandulosum Boiss. et Huet is used for treatment of liver disorders, and its effects are attributed to sesquiterpenes. This study aims to investigate the hepatoprotective effects of a sesquiterpene-rich fraction (SRF) from the aerial part of C.