Anti-inflammatory effect of lycopene on carrageenan-induced paw oedema and hepatic ischaemia-reperfusion in the rat

Br J Nutr. 2009 Jul;102(1):126-33. doi: 10.1017/S0007114508137886. Epub 2009 Feb 10.

Abstract

The regular intake of tomatoes or its products has been associated with a reduced risk of chronic diseases and these effects have been mainly attributed to lycopene. Here, we evaluated the anti-inflammatory properties of lycopene and its protective effects on organ injury in two experimental models of inflammation. In order to study the effects of lycopene in local inflammation, a carrageenan-induced paw oedema model in rats was performed. Lycopene was administered as an acute (1, 10, 25 or 50 mg/kg, intraperitoneally, 15 min before carrageenan injection) and chronic treatment (25 or 50 mg/kg per d, 14 d). Inflammation was assessed by the measurement of paw volume increase after 6 h. Lycopene significantly inhibited paw oedema formation at two doses (25 and 50 mg/kg) in both acute and repeated administration. The effect of lycopene on liver inflammation was evaluated in a liver ischaemia-reperfusion (I/R) model. Rats were subjected to 45 min of ischaemia of three-quarters of the liver followed by 2 h of reperfusion. In this model, lycopene was administered daily at two doses (25 and 50 mg/kg) during the 14 d that preceded the experiments. Repeated administration of lycopene reduced liver injury induced by I/R, as demonstrated by the reduction of the increase in liver injury markers (aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and gamma-glutamyl transferase) and attenuation of liver tissue lipoperoxidation was evidenced by a decrease in malondialdehyde production. The present results show that lycopene exhibited local anti-inflammatory activity and also attenuated liver injury induced by I/R. We speculate that lycopene administration might be useful in the pharmacological modulation of inflammatory events.

Publication types

  • Comparative Study

MeSH terms

  • Acute Disease
  • Animals
  • Antioxidants / therapeutic use*
  • Biomarkers / analysis
  • Biomarkers / blood
  • Carotenoids / therapeutic use*
  • Carrageenan
  • Chronic Disease
  • Edema / pathology
  • Edema / therapy*
  • Hindlimb
  • Lipid Peroxidation
  • Liver / blood supply
  • Liver / metabolism
  • Liver / pathology
  • Liver Diseases / metabolism
  • Liver Diseases / pathology
  • Liver Diseases / therapy*
  • Lycopene
  • Male
  • Models, Animal
  • Phytotherapy / methods*
  • Rats
  • Rats, Wistar
  • Reperfusion Injury / pathology
  • Reperfusion Injury / therapy*

Substances

  • Antioxidants
  • Biomarkers
  • Carotenoids
  • Carrageenan
  • Lycopene