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Dietary intervention of cow ghee and soybean oil on expression of cell cycle and apoptosis related genes in normal and carcinogen treated rat mammary gland

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Abstract

The present study investigated the effect of cow ghee (clarified butter fat) versus soybean oil on the expression of cyclins A and D1, and apoptosis regulating Bax, Bcl-2 and PKC-α genes in mammary gland of normal and 7,12-dimethylbenz(a)anthracene (DMBA) treated rats. Two groups of 21 days old female rats were fed for 44 weeks diet containing cow ghee or soybean oil (10%). The animals were given DMBA (30 mg/kg body weight) through oral intubation after 5 weeks feeding. Another two groups fed similarly but not given DMBA served as respective controls. In control groups, the expression of cyclin A was similar on both cow ghee and soybean oil, but that of cyclin D1 was more on soybean oil diet. However, in DMBA treated groups, the expression levels of cyclins A and D1 were significantly greater on soybean oil than on cow ghee. The expression levels of Bax, Bcl-2 and PKC-α were similar in two control groups. However, in tumor tissue expression levels of Bcl-2 and PKC-α were significantly lower in cow ghee fed rats than in soybean oil fed ones, but Bax was similarly expressed in both DMBA treated groups. The pro-apoptotic ratio Bax/Bcl-2 increased and the anti-apoptotic ratio PKC-α*(Bcl-2/Bax) decreased in cow ghee group compared to soybean oil group in DMBA treated rats. Hence, the decreased expressions of cyclins A and D1, Bcl-2 and PKC-α mediate the mechanism by which cow ghee protects from mammary carcinogenesis.

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Acknowledgments

The authors are grateful to the Indian Council of Agricultural Research (ICAR), New Delhi for funding the project.

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Authors and Affiliations

  1. Division of Animal Biochemistry, National Dairy Research Institute, Karnal, 132001, Haryana, India

    Rita Rani, Vinod Kumar Kansal & Deepti Kaushal

  2. Animal Biotechnology Centre, National Dairy Research Institute, Karnal, 132001, Haryana, India

    Sachinandan De

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  1. Rita Rani
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  2. Vinod Kumar Kansal
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Correspondence to Vinod Kumar Kansal.

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Rani, R., Kansal, V.K., Kaushal, D. et al. Dietary intervention of cow ghee and soybean oil on expression of cell cycle and apoptosis related genes in normal and carcinogen treated rat mammary gland. Mol Biol Rep 38, 3299–3307 (2011). https://doi.org/10.1007/s11033-010-0435-1

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  • DOI: https://doi.org/10.1007/s11033-010-0435-1

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