{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T04:14:19Z","timestamp":1777436059333,"version":"3.51.4"},"reference-count":43,"publisher":"The Company of Biologists","issue":"3","license":[{"start":{"date-parts":[[1989,11,1]],"date-time":"1989-11-01T00:00:00Z","timestamp":625881600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/www.biologists.com\/user-licence-1-1\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1989,11,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Oligodeoxyribonucleotide excess solution hybridization, Northern blot and in situ hybridization were used to analyze metallothionein gene expression in mouse decidua and placentae during gestation. Metallothionein (MT) -I and -H mRNA levels were constitutively elevated, 11- and 13-fold, respectively, relative to the adult liver, in the deciduum (D8), and decreased coordinately about 6-fold during the period of development when the deciduum is replaced by the developing placenta (DIO-16). Coincident with this decline, levels of MT mRNA increased dramatically in the visceral yolk sac endoderm. In situ hybridization established that MT-I mRNA was present at low levels in the uterine luminal epithelium (D4), but was elevated at the site of embryo implantation exclusively in the primary decidual zone by D5, and then in the secondary decidual zone (D6-8). Although low levels of MT mRNA were detected in total placental RNA, in situ hybridization revealed constitutively high levels in the outer placental spongiotrophoblasts. Analysis of pulse-labeled proteins from decidua and placentae established that these tissues are active in the synthesis of MT. The constitutively high levels of MT mRNA in decidua were only slightly elevated following injection of cadmium (Cd) and\/or zinc (Zn), whereas in placentae they increased several-fold. MT mRNA levels were equally high in decidua and experimentally induced deciduomata (D8) which establishes that decidual MT gene expression is not dependent on the presence of the embryo or some embryo-derived factor. Although the functional role of MT during development is speculative, these results establish the concept that, from the time of implantation to late in gestation, the mouse embryo is surrounded by cells, interposed between the maternal and embryonic environments, which actively express the MT genes. This suggests that MT plays an important role in the establishment and maintenance of normal pregnancy.<\/jats:p>","DOI":"10.1242\/dev.107.3.611","type":"journal-article","created":{"date-parts":[[2021,4,26]],"date-time":"2021-04-26T00:43:56Z","timestamp":1619397836000},"page":"611-621","source":"Crossref","is-referenced-by-count":64,"title":["Cell-specific metallothionein gene expression in mouse decidua and placentae"],"prefix":"10.1242","volume":"107","author":[{"given":"Swapan K.","family":"De","sequence":"first","affiliation":[{"name":"University of Kansas Medical Center 1 Department of Biochemistry and Molecular Biology , , Kansas City, KS 66103, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael T.","family":"McMaster","sequence":"additional","affiliation":[{"name":"University of Kansas Medical Center 1 Department of Biochemistry and Molecular Biology , , Kansas City, KS 66103, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sudhansu K.","family":"Dey","sequence":"additional","affiliation":[{"name":"University of Kansas Medical Center 2 Departments of Obstetrics - Gynecology and Physiology, Ralph L. Smith Research Center , , Kansas City, KS 66103, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Glen K.","family":"Andrews","sequence":"additional","affiliation":[{"name":"University of Kansas Medical Center 1 Department of Biochemistry and Molecular Biology , , Kansas City, KS 66103, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"237","published-online":{"date-parts":[[1989,11,1]]},"reference":[{"key":"2023030315561771500_","doi-asserted-by":"publisher","first-page":"497","DOI":"10.1111\/j.1432-1033.1983.tb07289.x","article-title":"Levels of metallothionein in fetal, neonatal and maternal rat liver","volume":"131","author":"Andersen","year":"1983","journal-title":"Eur. J. 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