Preparturient changes in allantoic fluid and fetal plasma from chronically catheterised ewes.
Before birth a marked rise in the potassium/sodium concentration ratio of allantoic fluid coincided with a similar rise in the corticosteroid levels of fetal plasma. The prepartum corticosteroid increase started at 134-136 days gestational age whether delivery occurred at 141 or 151 days.
D000305:Adrenal Cortex Hormones / Q000097:blood; D000482:Allantois; D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D001826:Body Fluids / Q000032:analysis; D005321:Extraembryonic Membranes; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D005865:Gestational Age; D007743:Labor, Obstetric; D011188:Potassium / Q000032:analysis; D011247:Pregnancy; D012756:Sheep / Q000378:metabolism* / Q000502:physiology; D012964:Sodium / Q000032:analysis
D000305:Adrenal Cortex Hormones; D001786:Blood Glucose; D012964:Sodium; D011188:Potassium