Archives of Toxicology

, Volume 77, Issue 1, pp 42–47 | Cite as

Hibiscus protocatechuic acid inhibits lipopolysaccharide-induced rat hepatic damage

  •  W.-L. Lin
  •  Y.-J. Hsieh
  •  F.-P. Chou
  •  C.-J. Wang
  •  M.-T. Cheng
  •  T.-H. Tseng
Organ Toxicity and Mechanisms

Abstract.

Hibiscus protocatechuic acid (PCA), a phenolic compound found in the dried flowers of Hibiscus sabdariffa L. (Malvaceae), was demonstrated to have an antioxidant effect in vitro and in vivo, and an antitumor property in our previous study. In the present study, we used lipopolysaccharide (LPS, an endotoxin) to induce rat liver inducible nitric oxide synthase (iNOS), and found that pretreatment with PCA decreased the liver iNOS and the serum total nitrite induced by LPS. Our investigation showed that pretreatment of rats with PCA (0.2 and 0.5 mmol/kg dosed by gavage) for 5 days significantly decreased the serum levels of the hepatic enzyme markers alanine- and aspartate aminotransferase (ALT, alanine aminotransferase; AST, aspartate aminotransferase) induced by the 6-h treatment with LPS (i.p.; 5 mg/kg). Histopathological evaluation of the rat livers revealed that PCA reduced the incidence of liver lesions induced by LPS, including neutrophil infiltration, congestion, and liver cell swelling induced by LPS in rats. We conclude that PCA, an antioxidant, presents an inhibitory potential on iNOS and hepatic damage induced by LPS.

Hibiscus protocatechuic acid Lipopolysaccharide Inducible nitric oxide synthase 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  •  W.-L. Lin
    • 2
  •  Y.-J. Hsieh
    • 1
  •  F.-P. Chou
    • 1
  •  C.-J. Wang
    • 1
  •  M.-T. Cheng
    • 3
  •  T.-H. Tseng
    • 1
  1. 1.Institute of Biochemistry, Chung Shan Medical University, No.110, Section 1, Chien-Kuo N. Road, Taichung 402, Taiwan
  2. 2.Department of Pathology, Chung Shan Medical University Hospital, No. 110, Section 1, Chien Kuo N. Rd., Taichung 402, Taiwan
  3. 3.Division of Gastroenterology and Hepatology, Department of Pediatrics, Changhua Christian Hospital, No. 135, Nanhsiao Street, Changhua 500, Taiwan

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