RESUMO
The study was aimed at evaluating various biological actions of widely consumed Areca catechu nut. The nut's ethanolic extract exhibited cytotoxicity (lung cancer cell line), embryotoxicity (chick embryo), phytotoxicity (Lemna minor), insecticidal (Rhyzopertha dominica), anti-bacterial (Pseudomonas aeruginosa), anti-fungal (Microsporum canis) and mitogenic (human blood lymphocytes) actions. The standardization results revealed presence of 1.7 µ g arecoline per mg of extract. In conclusion, the Areca nut is endowed with both harmful and beneficial biological actions. Keeping in view its wide consumption and ease of availability, the aforesaid information should be channelized for health and agricultural benefits.
Assuntos
Antineoplásicos Fitogênicos/farmacologia , Areca/química , Inseticidas/farmacologia , Extratos Vegetais/farmacologia , Animais , Antibacterianos/química , Antibacterianos/farmacologia , Antifúngicos/química , Antifúngicos/farmacologia , Antineoplásicos Fitogênicos/química , Araceae/efeitos dos fármacos , Arecolina/análise , Artemia/efeitos dos fármacos , Linhagem Celular Tumoral , Embrião de Galinha/efeitos dos fármacos , Avaliação Pré-Clínica de Medicamentos/métodos , Etanol/química , Humanos , Inseticidas/química , Índice Mitótico , Nozes/química , Extratos Vegetais/química , Extratos Vegetais/normasRESUMO
Cuscuta reflexa (Convolvulaceae), is commonly known as amarbel or akashbel. In Bangladesh and Nepal some of the tribes use C. reflexa against edema, body ache, cancer, skin infections and liver disorders. Despite its traditional uses there is no information regarding genotoxic effects of either the plant extract or its pure compounds. Methanolic extract of C. reflexa (MECR) and pure compounds derived from it namely, odoroside H, neritaloside, and strospeside, were evaluated in Allium cepa L. and A. sativum L. for their effects on root growth, root apical meristem mitotic index (MI) , and chromosomal aberrations (CAs). In this study, we adopted a new method of calculating percent change in root length. MECR caused a concentration- and time- dependent inhibition in root length at 100 - 10000µg/ml in A. cepa root. It was accompanied by a subsequent decline in MI which is an indicative of its cytotoxic effect. On the contrary, at low concentrations a significant rise in root length was noticeable. In A. sativum, MECR also reduced the root length having IC50 values ~8 x and 4.3 x lower than A. cepa. A variety of CAs were evident in both Allium systems after treatment with MECR, odoroside H and neritaloside. Thus in MECR, cardenolides glycosides, i.e. odoroside H and neritaloside could be accountable for its genotoxicity.