... catecholamine concentrations in both groups of animals, p < 0.05. These results demonstrate that intrauterine catecholamine clearance is highly dependent on transporter-dependent mechanisms. Chronic intrauterine stress, manifested by increased circulating norepinephrine, is associated with a significant...

... and its pituitary content increases in concomitance with the fetal adrenal sprout. Moreover, these data indicate that the intermediate pituitary lobe could be activated by the stress of labor after the 20th week of pregnancy. Embryo Fetal pituitary α-MSH Desacetyl-α-MSH ACTH Stress HPLC Biol...

...Juan Hidalgo; Mercé Giralt; Justine S. Garvey; Antonio Armario The present experiment was designed to examine the influence of pregnancy on basal and stress levels of serum and liver metallothionein (MT). Eighteen-day pregnant rats showed higher serum MT levels and lower liver MT levels than...

... thereafter. Induction of adrenal ODC following the stress of immobilization is already observed in the rat at 4 days of age but the induction caused by maternal deprivation or cold exposure is obtained only at 17 days. The results suggest that the developmental pattern of ODC activity is independent of its...

... or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Sheep Fetal Lung fluid Lecithin/sphingomyelin ratio Surfactant Phospholipids Lung maturation Metabolite VIII of Bisolvon Stress Biol. Neonate 29: 315 - 322(1976) Indication...

... size Corticosterone Stress Pituitary Adrenal Gonads Rat Biol. Neonate 32: 83-93 (1977) Differential Effect of Pre-and Postnatal Litter Size Reduction on Body Weight and Development of Stress Response in the R at1 K. Milkovic, M. Peruzovic, R. Romic, J. Paunovic and K. Pope Institute of Biology...

...Clara Torda The effect of recurrent postnatal stress on the norepinephrine content of hypothalamus has been studied. Repeated exposure to hunger or to stimulation of the lateral nucleus of the hypothalamus served as stress-producing process. Regardless of their nature, recurrent stresses increased...

... littermates. At 21 days the smallest adrenals were in the rats treated with metopirone at 7–10 days. Metopirone increased resting and stress levels of adrenal and plasma corticosterone in the 14-day-old rats and the response to stress by the adrenal corticosterone increase in the 21-day-old rats...

...Lionel Hary; Jean-Paul Dupouy; Alain Chatelain ACTH level, determined by radioimmunoassay, has been used as a reliable test to investigate pituitary response to bilateral adrenalectomy, metyrapone treatment and ether stress in 8-day-old rat newborns. The pituitary gland was able to enhance ACTH...

... a higher mean level (47 ng/ml); and in these fetuses, there was an inverse relationship between the initial GH level and the fetal plasma glucose concentration. It is possible that the stress of induction of labour and sampling may have stimulated GH release. Maternal glucose infusion was associated...

...Gopi Menon; Neil McIntosh Newborn babies, even if extremely preterm, show responses to pain. The major stress responses seen with surgical pain are associated with serious adverse medical outcomes. There is an ethical imperative to consider pain relief in babies, despite the fact that they cannot...

... are exposed to 20-second bursts of hypoxic gas mix containing 10% oxygen (60 events/h; 6 h/day) from postnatal days 7 to 11. To determine whether subtle repetitive hypoxic insults also induce expression of stress-related genes, we employed real-time RT-PCR to assay gene transcription in neonatal rats...

... multiple fetal sources as a response to hypoxemic stress. As inhibins may affect the hypothalamus-pituitary-adrenal axis which plays an important role in the mechanisms of adaptations to the post-natal life, inhibin B in fetal circulation might then be beneficial to a fetus whose intrauterine survival...

... stimulator cells, either from a genetically unrelated animal or from a virally transformed monkey cell line. Periods of daily stress for 6 weeks in mid-late pregnancy (months 3.0–4.5) resulted in a significant decrease in proliferative responses, whereas the same stressor early in pregnancy (months 1.5–3.0...

... differences in behavioral responses to stress or novelty in the rat at adulthood. In comparison to animals born by rapid C-section alone, animals born by C-section with 10 or 15 min of added anoxia were significantly more immobile during forced swim stress administered for 6 trials over several weeks...

... preterm neonates to established or chronic pain. Acute physiologic changes caused by painful or stressful stimuli can be implicated as important factors in the causation or subsequent extension of early intraventricular hemorrhage (IVH) or the ischemic changes leading to periventricular leukomalacia (PVL...