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01-10-2015 | Original Contribution

Protective effect of thymoquinone against high-fructose diet-induced metabolic syndrome in rats

Authors: Pankaj Prabhakar, K. H. Reeta, S. K. Maulik, A. K. Dinda, Y. K. Gupta

Published in: European Journal of Nutrition | Issue 7/2015

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Abstract

Purpose

Thymoquinone (TQ), a bioactive constituent of Nigella sativa (Linn.) seed, which is commonly used as a spice in Asian food, has been reported to possess a wide range of biological effects. The present study evaluated the effect of TQ on high-fructose diet (HFD)-induced metabolic syndrome (MetS) in male Wistar rats.

Methods

MetS was induced by 60 % HFD over 42 days. TQ (25, 50 and 100 mg/kg, p.o. once daily) was administered along with HFD for 42 days. Pioglitazone (10 mg/kg, p.o. once daily) was used as a standard drug. Plasma glucose, triglycerides, total cholesterol and HDL-cholesterol were estimated on days 0 and 42. Change in blood pressure, oral glucose tolerance and insulin resistance were measured. Hepatic thiobarbituric acid reactive substances (TBARS), reduced glutathione (GSH), superoxide dismutase (SOD) and catalase levels were estimated as measures of hepatic oxidative stress. Hepatic mRNA of PPAR-α and PPAR-γ was also studied.

Results

TQ prevented the characteristic features of HFD-induced MetS, such as hyperglycaemia, hypertriglyceridemia, hypercholesterolaemia and elevated systolic blood pressure. TQ also prevented impaired glucose tolerance and insulin resistance. It also ameliorated HFD-induced increase in hepatic TBARS and depletion of SOD, catalase and GSH. TQ prevented reduction in hepatic mRNA of PPAR-α and PPAR-γ in HFD rats, and the effects were comparable to those of pioglitazone.

Conclusions

This study demonstrates protective effect of TQ against HFD-induced MetS on rats which might have been mediated via PPAR mechanism.
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Metadata
Title
Protective effect of thymoquinone against high-fructose diet-induced metabolic syndrome in rats
Authors
Pankaj Prabhakar
K. H. Reeta
S. K. Maulik
A. K. Dinda
Y. K. Gupta
Publication date
01-10-2015
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nutrition / Issue 7/2015
Print ISSN: 1436-6207
Electronic ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-014-0788-7