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Article Publish Status: FREE
Abstract Title:

Inhibitory activity of flaxseed oil against CdClinduced liver and kidney damage: Histopathology, genotoxicity, and gene expression study.

Abstract Source:

Toxicol Rep. 2020 ;7:1127-1137. Epub 2020 Aug 31. PMID: 32963966

Abstract Author(s):

Kawthar A Diab, Noha E Ibrahim, Maha A Fahmy, Emad M Hassan, Enayat A Omara

Article Affiliation:

Kawthar A Diab

Abstract:

The present work evaluated the effect of flaxseed oil (FO) against toxicity induced by cadmium chloride (CdCl) in the mouse liver and kidney. Male Swiss albino mice were treated with CdCl(4.5 mg/kg, intraperitoneally) with or without FO at three concentrations (4, 8, 12 mL/kg, orally) for two consecutive weeks. To analyze the effects of FO, we used the following techniques: (1) histopathological examination; (2) comet assay; (3) RT-PCR gene expression analysis of tumor necrosis factor (TNF-α) and tumor suppressor protein (p53); and (4) immunohistochemical analysis of caspase-9 protein expression. The gas chromatography-mass spectrometry results showed that FO had a high content of unsaturated fatty acids including, oleic acid, linolenic acid, and linoleic acid. Oral supplementation with FO (12 mL/kg) resulted in a normal histological appearance without alteration in the DNA integrity and gene expression of TNF-α, p53, and caspase-9 in liver and kidney tissues. As expected, CdClremarkably induced loss of histological integrity, increased DNA comet formation, increased TNF-α and p53 mRNA expression levels and increased the immunoreactivity of caspase-9 expression. When FO was given before administration of CdCl, these histopathological defects were reversed; necrosis, degeneration, inflammatory cell infiltration, hemorrhage, Kupffer cells, and pyknotic cells were all reduced. These histological improvements induced by FO were accompanied by reduced DNA breakage, downregulated mRNA expression of TNF-α and p53, and downregulated immunohistochemical expression of caspase-9 protein. In conclusion, FO and its constituents may act as signaling molecules and modify the expression of genes involved in proinflammatory cytokine production (TNF-α), cell cycle arrest (p53), and apoptosis (caspase-9), thereby improving biological activities and health.

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