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Abstract Title:

Chemopreventive effects of mustard (Brassica compestris) on chemically induced tumorigenesis in murine forestomach and uterine cervix.

Abstract Source:

Hum Exp Toxicol. 2005 Jun;24(6):303-12. PMID: 16004197

Abstract Author(s):

Gagandeep, M Dhiman, E Mendiz, A R Rao, R K Kale

Abstract:

"As there is a strong correlation between diet and cancer, the dietary constituents that inhibit mutagenesis and/or carcinogenesis are of paramount importance for the prevention of human cancer. In the present study, cancer chemopreventive potentials of different doses of mustard (Brassica compestris) seed mixed diets were evaluated against benzo(a)pyrene [B(a)P]-induced forestomach tumorigenesis and 3-methylcholantrene (MCA)-induced uterine cervix tumorigenesis. Results showed a significant inhibition of stomach tumour burden (tumours/ mouse) by mustard seeds. Tumour burden was 7.08 +/- 2.47 in the B(a)P-treated control group, whereas it was reduced to 1.36 +/- 1.12 (P<0.001) by the 2.5% dose and 1.18 +/- 0.87 (P<0.001) by the 5% dose of mustard seeds. The cervical carcinoma incidence, as compared to MCA-treated control group (73.33%), was reduced to nil (P<0.05) by the 5% diet of mustard seeds and to 13.33% (P<0.05) by the 7.5% diet of mustard seeds. The effect of the 2.5% and 5% mustard seed mixed diets was also examined on the antioxidant enzymes, glutathione content, lactate dehydrogenase (LDH) and lipid peroxidation in the liver of Swiss albino mice. The glutathione-S-transferase-specific activity was increased (P<0.05) by the 2.5% dose, whereas there was no significant change in the activity of DT-diaphorase. In antioxidant systems, significant elevation of the specific activities of superoxide dismutase and catalase was observed with both doses of mustard seeds (P<0.05). The level of reduced glutathione (GSH) measured as nonprotein sulphydryl content was elevated by the 2.5% dose of mustard seeds only (P<0.05). Lipid peroxidation measured as formation of thiobarbituric acid reactive substances production showed significant inhibition (P<0.05) by the 5% dose of mustard seed mixed diet. LDH activity was decreased significantly (P<0.05) by both the doses. The results strongly suggest the cancer chemopreventive potentials of mustard seeds and their ability to enhance the antioxidant defence system and in turn provide protection against the toxic effects of carcinogens. It is likely that the use of mustard seeds in the diet may contribute to reducing the risk of cancer incidence and burden in the human population..

Study Type : In Vitro Study

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Sayer Ji
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