Hepatoprotective Activity Of Methanolic Extract Research Articles

Modulation of di- (2- ethylhexyl) phthalate induced hepatic toxicity by Apium graveolens L. seeds extract in rats

In the present study, the hepatoprotective activity of methanolic extract of Apiumgraveolens L. (celery) seeds was tested against Di-(2- ethylhexyl) phthalate(DEHP) induced hepatotoxicity in rats. Oral administration of DEHP (1000 mg/kg b.wt/day) for 6 weeks in rats caused a significant increase in the levels of serum marker enzymes like serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT), alkaline phosphatases (ALP) and the levels of total bilirubin and hepatic lipid peroxidation (TBARS). The levels of serum protein, hepatic glutathione (GSH) and ascorbic acid were decreased, administration of A.graveolens seeds extract (300 mg/kg b.wt./day p.o.) for 6 weeks results in a significant recovery of these biochemical parameters toward normalcy compared with the DEPC treated and control rats. Key words: Apium graveolens, hepatic toxicity, di-(2- ethylhexyl) phthalate, hepatic marker enzymes

Protective effect ofHordeum vulgarelinn. on acetaminophen-induced liver damage

The objective of the present study has been to evaluate the hepatoprotective activity of methanolic extract of Hordeum vulgare Linn. (MEHV) seeds against acetaminophen-induced liver damage in rats. Acetaminopheninduced liver damage was produced by the treatment of acetaminophen (3g/kg/d, p.o.) for three days. Other groups of rats were pretreated with two doses of MEHV seeds (300 and 500 mg/kg/d, p.o) and silymarin (200 mg/kg/d, p.o) 30 min prior to acetaminophen ingestion. Liver damage was evidenced by elevated levels of biochemical parameters such as serum glutamate oxaloacetic transaminase and glutamate pyruvic transaminase (SGOT and SGPT), alkaline phosphatase (ALP), total and direct bilirubin (TBL and DBL), lactate dehydrogenase (LDH), gamma glutamyl transferase (GGT), malondialdehyde (MDA), decreased level of total protein (TP) and reduced glutathione (GSH) along with increased histopathological scores in the APAP control. Pretreatments with MEHV seeds produced signiÞ cant reversal in the above biochemical parameters and reduced histopathological scores of fatty degeneration, necrosis with signiÞ cant evidence of regeneration. The results of this study indicate that pretreatment with MEHV seeds possessed the signiÞ cant hepatoprotective activity. In conclusion, the possible mechanism of hepatoprotective action of methanolic extracts of Hordeum vulgare seeds may be due to its antioxidant activity as indicated by protection against increased lipid peroxidation and maintained glutathione contents. Key words: Antioxidant, APAP, hepatoprotective activity, Hordeum vulgare , phenolic compounds.

Hepatoprotective activity of Amomum subulatum Roxb against ethanol-induced liver damage.

The hepatoprotective activity of methanolic extract of Amomum subulatum Roxb (Zingiberaceae) seeds was studied against 20 % ethanol (3.76 g/kg/days, p.o for 18 days) induced liver damage in rats. Ethanol produced significant changes in various liver parameters such as functional (thiopentone-induced sleeping time) and physical (increased liver weight and volume). It also increased the biochemical parameters such as serum glutamate oxaloacetic transaminase and glutamate pyruvic transaminase, alkaline phosphatase, total and direct bilirubin, total cholesterol, triglyceride and decreased total protein along with changes in histological parameters (damage to hepatocytes). Treatment with methanolic extract of A. subulatum (100 and 300 mg/kg/day, p.o. for 18 days) and silymarin significantly prevented the functional, physical, biochemical and histological changes induced by ethanol, indicating the recovery of hepatic cells. These results demonstrate that methanolic extract of A. subulatum seeds possessed the hepatoprotective activity. Key words: Amomum subulatum, hepatoprotective activity, ethanol

Hepatoprotective activity of the methanolic extract ofTylophora indica(Burm. f.) Merill. leaves

The methanolic extract of Tylophora indica leaves was screened for hepatoprotective activity in carbon tetrachloride induced hepatotoxicity in albino rats. The degree of protection was measured by estimating biochemical parameters like Serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, total protein and level of serum bilirubin (both total and direct). Hepatoprotective activity of methanolic extract at a dose of 200 mg/kg and 300 mg/kg body weight, i.p., was compared with Silymarin (25 mg/kg, i.p.) treated animals. Tylophora indica leaves (200 and 300 mg/kg) exhibited significant reduction in serum hepatic enzymes when compared to rats treated with carbon tetrachloride alone. Furthermore, histopathological studies were also done to support the study. Key words: Carbon tetrachloride, hepatoprotective activity, Silymarin, Tylophora indica