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  • Cell & Developmental Biology  (2)
  • Pregnancy  (1)
Materialart
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 25 (1990), S. 101-109 
    ISSN: 1040-452X
    Schlagwort(e): mdr gene ; Pregnancy ; In situ hybridization ; Development ; Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: The multidrug resistance (mdr) gene family has been shown to encode a membrane glycoprotein, termed the P-glycoprotein, which functions as a drug efflux pump with broad substrate specificity. This multigene family is expressed in a tissue-specific fashion in a wide variety of normal and neoplastic tissues. The regulation of mdr gene expression in normal tissues is not understood. We have recently shown that mdr mRNA and the P-glycoprotein increases dramatically in the secretory luminal and glandular epithelium of the gravid murine uterus. This observation has suggested that mdr gene expression in the uterus is controlled by the physiologic changes associated with pregnancy. This report now demonstrates that mdr mRNA and P-glycoprotein are induced at high levels in the uterine secretory epithelium by the combination of estrogen and progesterone, the major steroid hormones of pregnancy. This regulation of mdr gene expression in the uterus does not require any other contribution from the fetus or placenta. The data indicate that this gene locus is hormonally responsive to estrogen and progesterone in the uterine secretory epithelium, suggesting an important and physiologically regulated role during pregnancy.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 0265-9247
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie , Medizin
    Notizen: Mouse pre-implantation development appears to be under the control of paracrine and autocrine growth factors. The epithelium of the oviduct and the uterus together, with the population of macrophages and lymphocytes present in the reproductive tract from the onset of pregnancy, are thought to be the major sources of paracrine growth factors targeted to the developing embryos. Some of the growth factors are synthesized by both uterine epithelial cells and activated lympho-hematopoietic cells, suggesting a partial overlap of the regulatory signals used by the reproductive and lympho-hematopoietic systems. Such growth factors may be the long sought-after mediators of the synchrony between the pre-implantation embryo and the sex-steroid hormone-induced changes in the uterus.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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