Biological investigations of the methanol extract of Tetrastigma leucostaphylum (Dennst.) Alston ex Mabb. (Vitaceae) : In vivo and in vitro approach

Tetrastigma leucostaphylum (Family: Vitaceae) is popular for its medicinal value in Bangladeshi tribal communities. This study aims to investigate several pharmacological values of methanol extract of T. leucostaphylum (METL). In vivo analgesic and anti-inflammatory researches have been implemented by using acetic acid-induced writhing and formalin-induced paw licking test protocols in mice. Furthermore, in vitro thrombolytic and anthelmintic studies have been performed by following the blood clot lysis method and nematode mortality measurement method. In the in vivo study, METL did not minimize the acetic acid-induced writhes prominently but significantly attenuate both the peripheral and inflammatory pain in mice in a dose-dependent manner. In early and late phase, METL 400 (mg/kg, b.w; p.o) showed 39.63 % and 48.73 % paw licking inhibition. Again, METL (100 µL) reflected 56.62 % clot lysis in thrombolytic research. Besides, METL causes the death of nematodes in a dose-dependent manner. The bioassay of the methanol extract of T. leucostaphylum justified the analgesic, anti-inflammatory, thrombolytic and anthelmintic activities of the crude extract and finally suggests the test extract as a wellspring of anti-inflammatory, thrombolytic and anthelmintic agents as a crude drug source.