shogaol and Chemical-and-Drug-Induced-Liver-Injury

This analysis aims to see whether 6-shogaol could protect rats against D-galactosamine (D-GalN)-induced Hepatotoxicity. The Wistar rats were divided into four groups (n=6). Group 1 received a standard diet, Group 2 received an oral administration of 6-shogaol (20 mg/kg b.wt), Group 3 received an intraperitoneal injection of D-GalN (400 mg/kg b.wt) on 21st day, and Group 4 received an oral administration of 6-shogaol (20mg/kg b.wt) for 21 days and D-GalN (400 mg/kg b.wt) injection only on 21st day. The hepatic marker enzymes activity, lipid peroxidative markers level increased significantly and antioxidant activity/level significantly reduced in D-GalN-induced rats. 6-shogaol Pretreatment effectively improves the above changes in D-GalN-induced rats. Further, inflammatory marker expression and MAPK signaling molecules were downregulated by 6-shogaol. These findings showed that 6-shogaol exerts hepatoprotective effects via the enhanced antioxidant system and attenuated the inflammation and MAPK signaling pathway in D-GalN-induced rats.

Topics: Animals; Antioxidants; Chemical and Drug Induced Liver Injury; Galactosamine; Lipopolysaccharides; Liver; Rats; Rats, Wistar; Signal Transduction

Acetaminophen (APAP) is one of the most commonly used analgesics and antipyretics. It causes serious liver damage when taken in large quantities by adults or children. Also, 6-shogaol is an active compound obtained from ginger with anti-inflammatory and antioxidant properties. This study aimed at examining the therapeutic effect of 6-shogaol in APAP-induced hepatotoxicity.. The mice were separated into five groups. After the mice were sacrificed, the levels of alanine aminotransferase (ALT), aspartate transaminase (AST), and alkaline phosphatase (ALP) in the blood, glutathione (GSH) level in the liver tissue homogenate, and levels of induced nitrite oxide synthetase (INOS) and total nitrite/nitrate were measured by spectrophotometric methods.. APAP administration significantly increased the serum levels of ALT, AST, and ALP, INOS activity in liver tissue, and total nitrite/nitrate levels compared with control and significantly decreased GSH levels. After APAP toxicity, 6-shogaol and N-acetylcysteine (NAC) administration significantly decreased the levels of ALT, AST, INOS, and total nitrite/nitrate levels and significantly increased GSH levels compared with control. Also, 6-shogaol was found to be better than NAC in increasing the GSH level.. The study showed that 6-shogaol might have an early therapeutic effect on APAP-induced liver damage.

Topics: Acetaminophen; Acetylcysteine; Alanine Transaminase; Animals; Aspartate Aminotransferases; Chemical and Drug Induced Liver Injury; Glutathione; Liver; Liver Diseases; Mice; Nitrates; Nitrites

The antihepatotoxic effects of gingerols, shogaols, diarylheptanoids and related analogues were assessed utilizing carbon tetrachloride- and galactosamine-induced cytotoxicity in primary cultured rat hepatocytes. Most congeners exhibited significant actions in these assay methods. The carbon tetrachloride assay appeared to be most useful in defining structure-activity relationships. The antihepatotoxic activity of gingerols and shogaols was dependent on the length of the side chain with the [7]- and [8]-companions eliciting the strongest activity. The gingerols exerted more intense activity than the corresponding shogaols. In the diarylheptanoids, introduction of hydroxyl groupings on the phenyl rings caused increased activity; however, the effect of the positions and number of hydroxyls on activity was variable depending on the carbon skeleton.

Topics: Alanine Transaminase; Animals; Carbon Tetrachloride Poisoning; Catechols; Cell Survival; Cells, Cultured; Chemical and Drug Induced Liver Injury; Fatty Alcohols; Galactosamine; Heptanes; Plants, Medicinal; Rats