Biomaterial Database

Corticosterone levels during midgestation in the maternal plasma and fetus of cleft palate-sensitive and -resistant mice. 1979

D S Salomon, and V D Gift, and R M Pratt

Corticosterone levels in the maternal plasma and fetal extracts during days 11--15 of gestation were measured by RIA in cleft palate-sensitive A/J and -resistant C57BL/6J mice. In both strains, the maternal plasma corticosterone increased from 10 micrograms/100 ml in nonpregnant animals to 100 microgram/100 ml between days 12--13. In A/J mice, the corticosterone level declined to 60 micrograms/100 ml by day 15, whereas in C57BL/6J mice, the corticosterone concentration remained elevated during this period. In contrast, fetal corticosterone levels in both strains remained unchanged between days 11-13 (0.5--1.0 ng/embryo) and increased on days 14 and 15 to 4--7 ng/embryo. The absence of significant differences in the concentration of maternal or fetal corticosterone between A/J and C57BL/6J mice suggests that the in vivo strain differences in the glucocorticoid susceptibility to cleft palate production are not related to any intrinsic differences in the endogenous levels of corticosterone between these two strains during midgestation.

UI	MeSH Term	Description	Entries
D008815	Mice, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.	Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D002972	Cleft Palate	Congenital fissure of the soft and/or hard palate, due to faulty fusion.	Cleft Palate, Isolated,Cleft Palates,Palate, Cleft,Palates, Cleft
D003345	Corticosterone	An adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid. (From Goodman and Gilman's The Pharmacological Basis of Therapeutics, 8th ed, p1437)
D005260	Female		Females
D005333	Fetus	The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.	Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D005865	Gestational Age	The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination.	Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D051379	Mice	The common name for the genus Mus.	Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus