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Abstract Title:

Gallic acid, a common dietary phenolic protects against high fat diet induced DNA damage.

Abstract Source:

Eur J Nutr. 2018 Jul 23. Epub 2018 Jul 23. PMID: 30039436

Abstract Author(s):

Tahereh Setayesh, Armen Nersesyan, Miroslav Mišík, Rahil Noorizadeh, Elisabeth Haslinger, Tahereh Javaheri, Elisabeth Lang, Michael Grusch, Wolfgang Huber, Alexander Haslberger, Siegfried Knasmüller

Article Affiliation:

Tahereh Setayesh

Abstract:

PURPOSE: Aim of the study was to find out if gallic acid (GA), a common phenolic in plant foods, prevents obesity induced DNA damage which plays a key role in the induction of overweight associated cancer.

METHODS: Male and female C57BL6/J mice were fed with a low fat or a high fat diet (HFD). The HFD group received different doses GA (0, 2.6-20 mg/kg b.w./day) in the drinking water for 1 week. Subsequently, alterations of the genetic stability in blood and inner organs were monitored in single cell gel electrophoresis assays. To elucidate the underlying molecular mechanisms: oxidized DNA bases, alterations of the redox status, lipid andglucose metabolism, cytokine levels and hepatic NF-κB activity were monitored.

RESULTS: HFD fed animals had higher body weights; increased DNA damage and oxidation of DNA bases damage were detected in colon, liver and brain but not in blood and white adipose tissue. Furthermore, elevated concentrations of insulin, glucose, triglycerides, MCP-1, TNF-α and NF-κB activity were observed in this group. Small amounts of GA, in the range of human consumption, caused DNA protection and reduced oxidation of DNA bases, as well as biochemical and inflammatory parameters.

CONCLUSIONS: Obese animals have increased DNA damage due to oxidation of DNA bases. This effect is probably caused by increased levels of glucose and insulin. The effects of GA can be explained by its hypoglycaemic properties and indicate that the consumption of GA-rich foods prevents adverse health effects in obese individuals.

Study Type : Animal Study

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