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Pure Appl. Chem. 75(11/12), 2415-2418, 2003

Pure and Applied Chemistry

Vol. 75, Issues 11-12

Temporal responses to estrogen in the uterus

K. C. Fertuck and T. R. Zacharewski

Biochemistry and Molecular Biology, National Food Safety and Toxicology Center, and Institute for Environmental Toxicology, Michigan State University, East Lansing, MI 48824-1319, USA

Abstract: The estrogen receptor acts primarily as an estrogen-inducible transcription factor in target organs, however, until recently the identification of individual responsive transcripts has been cumbersome. In the present study, oligonucleotide GeneChip microarrays were used to describe and analyze the levels of approximately 6500 transcripts in the uteri of immature, ovariectomized mice at various times following oral exposure to 100 mg/kg of ethynyl estradiol. The most reproducible responses were identified and subjected to K-means clustering, and functional annotations were obtained for the transcripts within each cluster. Connections were made between the observed transcriptional responses and the known physiological responses to estrogen exposure, focusing here on effects on uterine cell cycle progression leading to estrogen-stimulated uterine growth.

*Report from a SCOPE/IUPAC project: Implication of Endocrine Active Substances for Human and Wildlife (J. Miyamoto and J.Burger, editors). Other reports are published in this issue, pp. 1617-2615.


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