Suppression of Lipopolysaccharide-induced Liver Injury by Various Types of Tea and Coffee in D-Galactosamine-sensitized Rats

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Abstract
Extracts of various types of tea and coffee significantly suppressed lipopolysaccharide (LPS)-induced liver injury, as assessed by the plasma enzyme activities, in D-galactosamine-sensitized rats when administered orally once before injecting the drugs. There was a significant negative correlation between the caffeine levels of these extracts and liver injury. Authentic caffeine also had a hepatoprotective effect. These results suggest that caffeine-containing beverages generally suppress LPS-induced liver injury according to their caffeine content.