Evaluation of Hepatoprotective and Antioxidant Activity of Ethanolic Extract of Artabotrys zeylanicus Stem against Various Hepatotoxins Induced Hepatotoxicity in Albino Wister Rats

The objective of the present study was to investigate the antioxidant and hepatoprotective activity of ethanolic stem extract of Artabotrys zeylanicus against paracetamol (PCT), Ethanol (ETN) and Isoniazid and Rifampicin (IR) induced hepatotoxicity in Albino wister rats.

Methodology: The material was dried in shade, they were powdered and extracted with ethanol. Preliminary Phytochemical tests were done. The hepatoprotective activity of the ethanol extract was assessed in Albino wister rats. PCT (3 g/kg), ETN (5 gm/kg) and IR (100 mg/kg) has enhanced the levels of various biochemical markers of hepatic damage like Serum Glutamic Oxaloacetic Trasaminase (SGOT), Serum Glutamic pyruvic transaminase (SGPT), Alkaline phosphatise (ALP), bilirubin. Antioxidant levels were tested in all the Hepatotoxins treated and untreated groups.

Results: The various biochemical and Histopathological investigations done were Serum Glutamic Oxaloacetic Trasaminase (SGOT), Serum Glutamic pyruvic transaminase (SGPT), Alkaline phosphatise (ALP), Bilirubin, antioxidant activity by 1,1-diphenyl 2-picryl hydrazyl (DPPH), Nitro Blue Tetrazolium (NBT), Hyderogen peroxide (H2O2), lipid perioxidation, hyderoxil radical and nitric oxide. Treatment of ethanolic extract of stem of A. zeylanicus (100mg/kg, 200mg/kg and 400mg/kg body weight) has brought back the altered levels of biochemical markers to the near normal levels in the dose dependent manner. Ethanolic extract of A. zeylanicus were observed to inhibit oxidant stress with the maximum value of 71% and 62% at the concentration of 100 µg/mL. The crude ethanolic extract of A. zeylanicus had a calculated IC50 value of 62.2 and 63.25 μg/mL, which is nearly similar to the calculated IC50 value of the known antioxidant, ascorbic acid, ie 65.3 μg/mL. While the rats treated with AZ extract (100, 200 and 400 mg/kg) which were shown as reduction/absence of inflammatory cells, vascular congestion, cellular degeneration, necrosis and vacuoles. In contrast, the lower doses (100 mg/kg) of ethanolic extract of AZ stem shown low protection than at higher dose 400 mg/kg.

Conclusion: Our findings suggested that A. zeylanicus ethanol stem extract possessed a potent antioxidant and hepatoprotective activity.