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Enhanced therapeutic potential of naringenin‐phospholipid complex in rats

Naringenin is a naturally occurring flavanone, possessing a variety of biological activity. Due to its rapid elimination, naringenin needs frequent administration to maintain an effective plasma concentration. We have evaluated the therapeutic potential of naringenin‐phospholipid complex under oxidative stress conditions compared with free naringenin. Naringenin‐phospholipid complex was prepared and assessed for antioxidant activity in carbon tetrachloride intoxicated rats at a dose level of 100 mg kg−1 (p.o.). Liver function tests were studied by assessing serum glutamate oxaloacetate transaminase, serum glutamate pyruvate transaminase, serum alkaline phosphatase and total bilirubin. Marker enzymes of liver, namely glutathione peroxidase, superoxide dismutase, catalase and thiobarbituric acid reactive substances, were measured to evaluate the antioxidant potential at the same dose level. The plasma concentration of naringenin was also measured. It was observed that the naringenin‐phospholipid complex enhanced the antioxidant activity of the biomolecule and protected the liver significantly for a longer time as compared with free naringenin at the same dose level. Phospholipid complex of naringenin produced better antioxidant activity than the free compound with a prolonged duration of action, which may be helpful in reducing the fast elimination of the molecule from body.