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The effect ofGongronema latifolium extracts on serum lipid profile and oxidative stress in hepatocytes of diabetic rats

Abstract

Diabetes is known to involve oxidative stress and changes in lipid metabolism. Many secondary plant metabolites have been shown to possess antioxidant activities, improving the effects of oxidative stress on diabetes. This study evaluated the effects of extracts fromGongronema latifolium leaves on antioxidant enzymes and lipid profile in a rat model of non insulin dependent diabetes mellitus (NIDDM). The results confirmed that the untreated diabetic rats were subjected to oxidative stress as indicated by significantly abnormal activities of their scavenging enzymes (low superoxide dismutase and glutathione peroxide activities), compared to treated diabetic rats, and in the extent of lipid peroxidation (high malondialdehyde levels) present in the hepatocytes. The ethanolic extract ofG. latifolium leaves possessed antioxidant activity as shown by increased superoxide dismutase and glutathione peroxidase activities and decreases in malondialdehyde levels. High levels of triglycerides and total cholesterol, which are typical of the diabetic condition, were also found in our rat models of diabetes. The ethanolic extract also significantly decreased triglyceride levels and normalized total cholesterol concentration.

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Abbreviations

CAT:

Catalase

GPx:

glutathione peroxidase

MDA:

malondialdehyde

NIDDM:

non insulin dependent diabetes mellitus

ROS:

reactive oxygen species

SOD:

superoxide dismutase

STZ:

streptozotocin

TG:

triglyceride

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Correspondence to N. H. Ugochukwu.

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Ugochukwu, N.H., Babady, N.E., Cobourne, M. et al. The effect ofGongronema latifolium extracts on serum lipid profile and oxidative stress in hepatocytes of diabetic rats. J. Biosci. 28, 1–5 (2003). https://doi.org/10.1007/BF02970124

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  • DOI: https://doi.org/10.1007/BF02970124

Keywords

  • Diabetes
  • Gongronema latifolium
  • lipid profile
  • oxidative stress