POTENTIAL ANTI-TUMOR AND ANTI-INFLAMMATORY ACTIVITY OF SIX MISTLETOE PLANTS IN THE FAMILY VISCACEAE PRESENT IN WESTERN GHATS, INDIA
To find out the cytotoxicity, anti-tumor and anti-inflammatory activities of six species of plants belongs to Viscaeceae family available in Western Ghats (India).
In vitro cytotoxicity of Viscum extracts was studied by trypan blue exclusion method and MTT assay using various cell lines. Anti-tumor activity was determined using Ehrlich ascites carcinoma (EAC) and Daltonâ€™s lymphoma ascites (DLA) cells in mice. Anti-inflammatory activities of Viscum extracts were studied using carrageenan and dextran induced mouse paw edema models in mice.
All six Viscaeceae plant extracts studied were cytotoxic towards transformed cell lines like DLA and EAC as well as to MCF-7, MDA-MB-231 and SKBR3 cell lines. V.orientale, V.nepalense and V.ramosissimum, V.trilobatum were cytotoxic towards normal cells while V.angulatum and V.capitellatum were found to be nontoxic. Excepting V.angulatum all the other species selected here showed toxicity to animals. Administration of nontoxic concentration of extracts of Viscaeceae plants significantly (P<0.001) increased the lifespan of ascites tumor bearing animals and reduced DLA cells induced solid tumor development. All these plants except V.capitallatum and V.trilobatum showed significant (P<0.001) anti-inflammatory activity against carrageenan and dextran models and reduced pro-inflammatory cytokine levels.
Out of six species studied four species of Viscum species studied were cytotoxic to tumour cells and inhibited tumour development. Of the six species studied V. angulatum was non-toxic to animals and showed maximum efficiency as an antitumour agent. These plants showed significant anti-inflammatory activity and reduced inflammatory markers.
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