Localization of Eutr2, a locus controlling susceptibility to DES-induced uterine inflammation and pyometritis, to RNO5 using a congenic rat strain

Localization of Eutr2, a locus controlling susceptibility to DES-induced uterine inflammation and... In some rat strains chronic administration of exogenous estrogens induces pyometritis, an inflammation of the uterus associated with infection, suggesting that there is genetic variation in susceptibility to estrogen-induced inflammation and pyometritis. In this article we report that following 10 weeks of treatment with the synthetic estrogen diethylstilbestrol (DES), Fisher 344 (F344) rats exhibit modest uterine inflammation and a 0% incidence of pyometritis. By contrast, under identical experimental conditions, Brown Norway (BN) rats exhibit significant inflammation and a 100% incidence of pyometritis. Similarly, we also observed profound uterine inflammation and a 100% incidence of pyometritis in a congenic rat strain in which a segment of RNO5 from the BN strain is carried on the F344 strain. These data suggest that a locus on RNO5 controls both the magnitude of DES-induced uterine inflammation and susceptibility to DES-induced pyometritis. This locus, designated Eutr2, resides within the same segment of RNO5 as the Eutr1 locus, which confers susceptibility to E2-induced pyometritis in an F2 population generated in a cross between the BN and August × Copenhagen 9935, Irish (ACI) strains. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Localization of Eutr2, a locus controlling susceptibility to DES-induced uterine inflammation and pyometritis, to RNO5 using a congenic rat strain

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer Science+Business Media, Inc.
Subject
Life Sciences; Anatomy; Cell Biology; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s00335-005-0071-6
Publisher site
See Article on Publisher Site

Abstract

In some rat strains chronic administration of exogenous estrogens induces pyometritis, an inflammation of the uterus associated with infection, suggesting that there is genetic variation in susceptibility to estrogen-induced inflammation and pyometritis. In this article we report that following 10 weeks of treatment with the synthetic estrogen diethylstilbestrol (DES), Fisher 344 (F344) rats exhibit modest uterine inflammation and a 0% incidence of pyometritis. By contrast, under identical experimental conditions, Brown Norway (BN) rats exhibit significant inflammation and a 100% incidence of pyometritis. Similarly, we also observed profound uterine inflammation and a 100% incidence of pyometritis in a congenic rat strain in which a segment of RNO5 from the BN strain is carried on the F344 strain. These data suggest that a locus on RNO5 controls both the magnitude of DES-induced uterine inflammation and susceptibility to DES-induced pyometritis. This locus, designated Eutr2, resides within the same segment of RNO5 as the Eutr1 locus, which confers susceptibility to E2-induced pyometritis in an F2 population generated in a cross between the BN and August × Copenhagen 9935, Irish (ACI) strains.

Journal

Mammalian GenomeSpringer Journals

Published: Nov 11, 2005

References

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