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Abstract Title:

Effects ofδ-tocotrienol on ochratoxin A-induced nephrotoxicity in rats.

Abstract Source:

J Cell Physiol. 2018 Nov ;233(11):8731-8739. Epub 2018 May 18. PMID: 29775204

Abstract Author(s):

Sara Damiano, Luigi Navas, Patrizia Lombari, Serena Montagnaro, Iris M Forte, Antonio Giordano, Salvatore Florio, Roberto Ciarcia

Article Affiliation:

Sara Damiano

Abstract:

Ochratoxin A (OTA), is a natural contaminant of the food chain worldwide involved in the development of different type of cancers in animals and humans. Several studies suggested that oxidative damage might contribute to increase the cytotoxicity and carcinogenicity capabilities of OTA. The aim of this study was to evaluate the possible protective effect ofδ-tocotrienol (Delta), a natural form of vitamin E, against OTA-induced nephrotoxicity. Male Sprague-Dawley rats were treated with OTA and/or Delta by gavage for 14 days. Our results shown that OTA treatment induced the increase of reactive oxigen species production correlated to a strong reductionof Glomerular Filtration Rate (GFR) and absoluted fluid reabsorption (Jv) with conseguent significant increase in blood pressure. Consistent, we noted in the kidney of rats treated with OTA, an increase in malondialdheyde and dihydroethidium production and a reduction of the activity of the catalase, superoxide dismutase, and glutathione peroxidase. Conversly, in the rat group subjected to the concomitant treatment OTA plus Delta, we observed the restored effect, compared the OTA treatment group, on blood pressure, GFR, Jv, and all activities of renal antioxidant enzymes. Finally, as far as concern the tissue damage induced by OTA and measured evaluating fibronectin protein levels, we observed that in OTA plus Delta group this effect is not restored. Our findings releval that a mechanism underlying the renal toxicity induced by OTA is the oxidative stress and provide a new rationale touse a Delta in order to protect, at least in part, against OTA-induced nephrotoxicity.

Study Type : Animal Study

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