The Promoting Effects of 2, 3, 7, 8-Tetrachlorodibenzo-p-Dioxin on Nasal Tumors in Sprague-Dawley Rats

https://doi.org/10.22146/jifnp.20

R Wasito(1*)

(1) Gadjah Mada University
(*) Corresponding Author

Abstract


It was hypothesized that exposure to environmentally relevant dietary levels of 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD) or 2, 2', 4, 4', 5, 5'-hexachlorobiphenyl (245- HCB) could cause the development of nasal tumors and a combined exposure to these compounds could have a potentiating effect on tumor development. Thirty days after partial hepatectomy and NDEA administration, groups of 12 or 24 female Sprague-Dawley rats were fed a basal diet or diets containing 10 ppt TCDD, 10 ppt TCDD, 5 ppm 245-HCB, 10 ppt TCDD and 245-HCB or 100 ppt TCDD and 245-HCB for 140 days. Basal diets were fed from day 140 unit rats were killed on day 210 or day 420. Results indicated that TCDD or a combination of TCDD and 245-HCB significantly increased the incidence of nasal tumors by day 420. However, a combined exposure to TCDD and 245-HCB had no potentiating effect on the incidence of nasal tumors.


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DOI: https://doi.org/10.22146/jifnp.20

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Indonesian Food and Nutrition Progress (print ISSN 0854-6177; online ISSN 2597-9388) is published by the Indonesian Association of Food Technologists in collaboration with the Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada.

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