title: High yields of granulosa cell tumors/luteomas in F344 rat ovaries after transplacental administration of N-nitrosobis(2-oxopropyl)amine.
abstract: Ovarian tumors were induced at very high incidence in the offspring of F344 rats receiving 3 subcutaneous injections of 10 mg/kg of N-nitrosobis(2-oxopropyl)amine on the 14th, 18th and 20 days of gestation. Histologically, all ovarian tumors were of the granulosa cell tumor and/or luteoma type. Many of them consisted of large, polygonal cells with abundant eosinophilic or vacuolated cytoplasm, arranged in sheets or in a pseudo-palisaded pattern separated by thin fibrovascular stroma, and they exhibited typical luteoma morphological character. The high yields, and the similarities in morphology as well as putative hormonal influence suggest that this experimental system may serve as a good animal model for granulosa cell tumor and/or luteoma development in women.
authors.affiliation: Division of Pathology, National Institute of Hygienic Sciences, Tokyo.
authors.forename: A
authors.initials: A
authors.lastname: Maekawa
authors.forename: H
authors.initials: H
authors.lastname: Onodera
authors.forename: Y
authors.initials: Y
authors.lastname: Matsushima
authors.forename: T
authors.initials: T
authors.lastname: Nagaoka
authors.forename: A
authors.initials: A
authors.lastname: Todate
authors.forename: J
authors.initials: J
authors.lastname: Kanno
authors.forename: M
authors.initials: M
authors.lastname: Shibutani
authors.forename: H
authors.initials: H
authors.lastname: Ogasawara
authors.forename: J
authors.initials: J
authors.lastname: Yoshida
authors.forename: Y
authors.initials: Y
authors.lastname: Hayashi
mesh_terms: D000818:Animals; D002273:Carcinogens; D005260:Female; D006099:Granuloma / Q000139:chemically induced* / Q000473:pathology; D009374:Neoplasms, Experimental / Q000139:chemically induced*; D009602:Nitrosamines / Q000494:pharmacology*; D010051:Ovarian Neoplasms / Q000139:chemically induced*; D011247:Pregnancy; D051381:Rats; D011916:Rats, Inbred F344; D013798:Thecoma / Q000139:chemically induced* / Q000473:pathology
chemical_list: D002273:Carcinogens; D009602:Nitrosamines; C013622:nitrosobis(2-oxopropyl)amine