title: Induction of epithelial neoplasms by local application of N-nitrosobis(2-hydroxypropyl)amine and N-nitrosobis(2-acetoxypropyl)amine.
abstract: The local carcinogenic effect of N-nitrosobis(2-hydroxypropyl)amine (BHP) and N-nitrosobis(2-acetoxypropyl)amine (BAP) in Syrian golden hamsters was elucidated by weekly application to the cheek pouch, lip and vaginal epithelium. The tumor type and incidence in BHP- and BAP-treated hamsters, respectively, was as follows: trichoepitheliomas of the lip, 80 and 90%; cheek pouch papillomas, 10 and 0%, and vaginal papillomas, 80 and 70%. Other lesions were recorded in the perineum, rectum and external urethral ostium and could have been due to a local effect of these nitrosamines. In addition, internal organ tumors were observed with each compound and were possibly caused by absorption of the carcinogens.
mesh_terms: D000818:Animals; D002610:Cheek; D006224:Cricetinae; D005260:Female; D008048:Lip Neoplasms / Q000139:chemically induced; D008647:Mesocricetus; D009062:Mouth Neoplasms / Q000139:chemically induced*; D009374:Neoplasms, Experimental / Q000139:chemically induced; D009602:Nitrosamines / Q000008:administration & dosage / Q000633:toxicity*; D010212:Papilloma / Q000139:chemically induced*; D012878:Skin Neoplasms / Q000139:chemically induced*
chemical_list: D009602:Nitrosamines; C012457:diisopropanolnitrosamine; C013158:N-nitrosobis(2-acetoxypropyl)amine