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A diet enriched with biologically active substances as a protecting factor against carcinogenesis process induced by 1,2-dimethylhydrazine in rat liver

ABSTRACT: The aim of this study was to evaluate the ability of a diet enriched with biologically active compounds to protect against 1,2-dimethylhydrazine - induced carcinogenesis in 14-month old rats liver.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE55378 | GEO | 2014/02/27

SECONDARY ACCESSION(S): PRJNA239440

REPOSITORIES: GEO

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A diet enriched with biologically active substances as a protecting factor against carcinogenesis process induced by 1,2-dimethylhydrazine in rat liver

Project description:The aim of this study was to evaluate the ability of a diet enriched with biologically active compounds to protect against 1,2-dimethylhydrazine - induced carcinogenesis in 14-month old rats liver. Rats from control and experimental groups after 14 months of experiment were given 5 times 1,2-dimethylhydrazine (DMH) by intraperitoneal treatment at a dose of 30mg/kg of body weight once a week to induce the process of carcinogenesis. RNA from their livers were hybridized to Agilent two color microarrays with a common reference. Then, the transcriptomic profile of these livers were compared to the transcriptomic profile of 14-month rats received the same control diet and diet enriched with biologically active substances, but without 1,2-dimethylhydrazine - induction (data from GEO Submission - GSE51657).

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Project description:According to the Hippocrates' theorem "Let food be your medicine and medicine be your food", dietary interventions may induce changes in the metabolic and inflammatory state by modulating the expression of important genes involved in the chronic disorders. The aim of the present study was to evaluate the influence of long-term (14 months) use of biologically active substances-enriched diet (BASE-diet) on transcriptomic profile of rats' liver. The experiment was conducted on 36 Sprague-Dawley rats divided into two experimental groups (fed with control or BASE-diet, both n = 18). Control diet was a semi-synthetic diet formulated according to the nutritional requirements for laboratory animals. The BASE-diet was enriched with a mixture of polyphenolic compounds, β-carotene, probiotics, and n-3 and n-6 polyunsaturated fatty acids. In total, n = 3,017 differentially expressed (DE) genes were identified, including n = 218 DE genes between control and BASE groups after 3 months of feeding and n = 1,262 after 14 months. BASE-diet influenced the expression of genes involved particularly in the gonadotrope cell activation pathway and guanylate cyclase pathway, as well as in mast cell activation, gap junction regulation, melanogenesis and apoptosis. Especially genes involved in regulation of GnRH were strongly affected by BASE-diet. This effect was stronger with the age of animals and the length of diet use. It may suggest a link between the diet, reproductive system function and aging.

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Rattus norvegicus

Project description:A diet enriched with biologically active substances as a protecting factor against carcinogenesis process induced by 1,2-dimethylhydrazine in rat liver

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