نتایج جستجو برای: ovine fetus
تعداد نتایج: 33686 فیلتر نتایج به سال:
Bovine and ovine embryos exposed to a variety of unusual environments prior to the blastocyst stage have resulted in the development of unusually large offspring which can also exhibit a number of organ defects. In these animals, the increased incidence of difficult parturition and of fetal and neonatal losses has limited the large-scale use of in vitro embryo production technologies commonly u...
Epidermal growth factor (EGF) has been reported to stimulate adrenocorticotropin hormone (ACTH), growth hormone and prolactin secretion from pituitary tissue in vitro, and in large doses evokes ACTH secretion in adult sheep in vivo. In order to assess a possible role for EGF in the pituitary hyperfunction characteristic of the in utero fetus, we measured changes in plasma immunoreactive ACTH co...
Before birth, glucocorticoids retard growth, although the extent to which this is mediated by changes in insulin signalling pathways in the skeletal muscle of the fetus is unknown. The current study determined the effects of endogenous and synthetic glucocorticoid exposure on insulin signalling proteins in skeletal muscle of fetal sheep during late gestation. Experimental manipulation of fetal ...
The role of receptor subtypes in opioid modulation of the hypothalamic-pituitary-adrenal (HPA) axis is well understood in the adult but has not been investigated in the developing fetus. Because the fetal HPA axis plays an important role in the development of several vital organs and in the onset of parturition, an understanding of the role of opioid receptor subtypes on the fetal HPA axis is i...
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