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Fruit of  Cycas pectinata  Buch.-Ham has been used as medicine by the local community in some parts of the north eastern state of India. Despite its uses for different purposes, the safety assessment study has not been conducted. Therefore, we have evaluated the acute and the sub-acute toxicity of methanolic extract of  C. pectinata  fruit (CPFE) in a mice model via oral route of administration. Phytochemicals analysis was carried out by liquid chromatography-mass spectroscopy (LC-MS), nuclear magnetic resonance (NMR), and Fourier-transform infrared spectroscopy (FTIR). The acute toxicity study was performed at a single dose of 1000, 3000 and 5000 mg/kg and the sub-acute toxicity study at a dose of 100, 300 and 500 mg/kg was administered daily for 28 days. The calculated Lethal dose 50 (LD50) of CPFE was found to be 4000 mg/kg. Both acute and sub-acute studies showed that 5000 mg/kg and 500 mg/kg dose was toxic to the mice. The results of acute toxicity showed CPFE could have a mild toxic effect on the kidney at a dose of 3000 and 5000 mg/kg, as some deteriorated changes in the kidney along with increase creatinine levels were observed. Acute toxicity also showed an increase in white blood cells (WBC) at a dose of 3000 mg/kg. However, sub-acute toxicity studies do not show any detrimental effects on liver, kidney and hematological parameters. Thus, it can be suggested that CPFE at a dose of 100 and 300 mg/kg would be safe for consumption. The phytochemicals analysis by LC-MS, NMR and FTIR showed the presence of 32 major chemical compounds with certain biological activity like anti-neoplastic, antioxidant, and possible modulator of steroid metabolism (cholesterol antagonist and agonist of testosterone 17β-dehydrogenase) as predicted by PASS analysis.

Phytochemical analysis, in silico study and toxicity profile of Cycas pectinata Buch.-Ham seed in mice