Progression of Serosal Vascular Proliferative Lesions to Hemangiosarcomas in the Uterus of the 26-Week Tg.rasH2 Mice Carcinogenicity Studies.

Autor:	Paranjpe MG; BioReliance by SAFC, Rockville, MD, USA madhav.paranjpe@bioreliance.com., Belich JL; BioReliance by SAFC, Rockville, MD, USA., Richardson DR; BioReliance by SAFC, Rockville, MD, USA., Vidmar T; BioSTAT Consultants, Inc, Portage, MI, USA., Mann PC; EPL North West, Seattle, WA, USA., McKeon ME; BioReliance by SAFC, Rockville, MD, USA., Elbekai RH; PAREXEL International, Bethesda, MD, USA.
Jazyk:	angličtina
Zdroj:	International journal of toxicology [Int J Toxicol] 2017 Jan 01; Vol. 36 (1), pp. 29-34. Date of Electronic Publication: 2016 Jul 20.
DOI:	10.1177/1091581816659068
Abstrakt:	Tg.rasH2 mice are predisposed to hemangiosarcomas. Following the spleen, the uterus is the second most commonly affected organ in the female mice. Female mice are also predisposed to spontaneous vascular proliferative lesions on the serosal surface of the uterus, in which there is proliferation of normal vessels that are lined by well-differentiated endothelial cells. The hemangiosarcomas and vascular proliferative lesions can occur independently. In our facility, we have recorded a total of 47 uterine hemangiosarcomas in 3,985 female Tg.rasH2 mice assigned to various groups in 38 studies. Of these 47 cases, we have seen 22 (46.8%) cases where there was a clear progression of the serosal uterine vascular proliferative lesion into a hemangiosarcoma. In the remaining 25 (53.2%) cases, the uterine hemangiosarcomas involved myometrium and endometrium, but there was no serosal vascular proliferation. Based on the retrospective analysis of our data, we demonstrate that the vascular proliferative lesions noted on the serosal surfaces can progress to hemangiosarcomas and therefore these vascular proliferative lesions should be considered as preneoplastic lesions. (© The Author(s) 2016.)
Databáze:	MEDLINE
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