title: Carcinogenicity of benzo[a]pyrene 4,5-, 7,8-, and 9,10-oxides on mouse skin.
abstract: Benzo[a]pyrene and three arene oxides of benzo[a]pyrene (benzo[a]pyrene 4,5-, 7,8-, and 9,10-oxides) have been tested for carcinogenicity in mice by topical application of each compound (0.1 or 0.4 mumol) once every 2 weeks for 60 weeks. At the high dose, benzo[a]pyrene and the 7,8-oxide were highly carcinogenic, whereas the 4,5-oxide (K-region oxide) was weakly active and the 9,10-oxide was inactive. At the low dose, only benzo[a]pyrene was highly carcinogenic. The carcinogenic activities of the three arene oxides of benzo[a]pyrene were not correlated with their stabilities or mutagenic activities.
mesh_terms: D000818:Animals; D001580:Benzopyrenes; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced*; D005260:Female; D005354:Fibrosarcoma / Q000139:chemically induced; D007636:Keratoacanthoma / Q000139:chemically induced; D051379:Mice; D008810:Mice, Inbred C57BL; D009153:Mutagens; D009374:Neoplasms, Experimental / Q000139:chemically induced; D010212:Papilloma / Q000139:chemically induced; D012878:Skin Neoplasms / Q000139:chemically induced*; D013329:Structure-Activity Relationship
chemical_list: D001580:Benzopyrenes; D009153:Mutagens