No abstract

In the current investigation, phytochemical analysis, antioxidant, anti-ulcer and in vitro anthelmintic studies of Tabernaemontana dichotoma Methanol Extract (TCME) and Aqueous Extract (TCAE) from seeds were evaluated. Phytochemical analysis confirmed the occurrence of various secondary metabolites. Biological evaluation showed a dose dependent response of different extracts of T. dichotoma seeds. Both the extracts showed antioxidant potential. TCME displayed higher degree of H + K + ATPase on par with omeprazole, thus confirming the anti-ulcer potential of the plant. TCME also exhibited better wormicidal activity compared to the other extract in both paralysis of earthworms (Pheretimaposthuma), and confirming its role as anthelmentic medicine. The study confirms the anti-ulcer and anthelmentic properties of T. dichotoma seed extracts, with TCME showing higher efficacy.

In order to investigate the presence of adaptive response in cancerous cells, two monofunctional alkylating agents, namely, ethyl methanesulfonate (EMS) and methyl methanesulfonate (MMS), were employed to treat Ehrlich ascites carcinoma (EAC) cells in vivo. Conditioning dose of 80 mg/kg body weight of EMS or 50 mg/kg body weight of MMS and challenging dose of 240 mg/kg body weight of EMS or 150 mg/kg body weight of MMS were selected by pilot toxicity studies. Conditioned EAC cells when challenged after 8 h time lag resulted in significant reduction in chromosomal aberrations compared to challenging dose of respective agents. As has been proved in earlier studies with normal organisms, even in cancerous cells (EAC), there is presence of adaptive response to methylating and ethylating agents. Furthermore, it is also interesting to note in the present studies that the methylating agent, MMS, is a stronger inducer of the adaptive response than the ethylating agent, EMS.