Abstract Title:

Butylated hydroxytoluene exposure is necessary to induce lung tumors in BALB mice treated with 3-methylcholanthrene.

Abstract Source:

Cancer Res. 1997 Jul 15;57(14):2832-4. PMID: 9230183

Abstract Author(s):

A M Malkinson, K M Koski, W A Evans, M F Festing

Article Affiliation:

Department of Pharmaceutical Sciences, School of Pharmacy, Colorado Cancer Center, University of Colorado Health Sciences Center, Denver 80262, USA. [email protected]


Chronic butylated hydroxytoluene (BHT) treatment after a single administration of a carcinogen increases lung tumor multiplicity in some inbred strains of mice. We report that BALB/cOla and BALB/cByJ mice given a low dose (10 microg/g of body weight) of 3-methylcholanthrene (MCA) develop no lung tumors unless this is followed by chronic BHT exposure. Slightly higher MCA doses (15 and 25 microg/g) induce low lung tumor multiplicities (0.6 and 1.9 tumors/mouse, respectively) that are increased 12-26-fold by chronic BHT administration. This low-dose MCA/BHT model in BALB mice will facilitate the identification of genes regulating susceptibility to lung tumor promotion and pulmonary chemopreventative agents that act at a postinitiation site.

Study Type : Animal Study

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