Effects of methylene chloride/methanol leaf extract of Celtis durandii engler (Ulmaceae) on constriction of rat aorta.

Celtis durandii is a medicinal plant widely used in some part of Cameroon for the treatment of cardiovascular disorders. The vasorelaxant effects of the methylene chloride/methanol leaf extract of C. durandii were examined on isolated rat thoracic aorta.

Possible mechanisms of action of the neutral extract from Bidens pilosa L. leaves on the cardiovascular system of anaesthetized rats.

The aim of this study was to investigate the hypotensive and cardiac effects of the neutral extract from Bidens pilosa leaves. Intravenous administration of the extract resulted in a biphasic dose-related hypotensive activity. In normotensive rats (NTR), B.

Eremomastax speciosa: effects of leaf aqueous extract on ulcer formation and gastric secretion in rats.

The anti-ulcerogenic potential of the aqueous extract of Eremomastax speciosa leaves was investigated using two methods of ulcer induction: HCl/EtOH-induced ulceration and pylorus ligation. With both methods, the extract inhibited gastric ulceration in a dose-related manner. The highest oral dose tested (190 mg/kg) completely inhibited gastric ulceration and significantly reduced gastric acidity compared with the controls.