Intact osmoregulatory centers in the preterm ovine fetus: Fos induction after an osmotic challenge
نویسندگان
چکیده
منابع مشابه
Intact osmoregulatory centers in the preterm ovine fetus: Fos induction after an osmotic challenge.
We previously demonstrated a functional systemic dipsogenic response in the near-term fetal sheep (128-130 days; 145 days = full-term) with swallowing activity stimulated in response to central and systemic hypertonic saline. Preterm fetal sheep (110-115 days) do not consistently demonstrate swallowing in response to hypertonic stimuli, and it is unclear whether this is due to immaturity of osm...
متن کاملOsmotic threshold and sensitivity for vasopressin release and fos expression by hypertonic NaCl in ovine fetus.
In adults, hyperosmolality stimulates central osmoreceptors, resulting in arginine vasopressin (AVP) secretion. Near-term fetal sheep have also developed mechanisms to respond to intravascular hypertonicity with stimulation of in utero AVP release. However, prior studies demonstrating fetal AVP secretion have utilized plasma tonicity changes greater than those required for adult osmotically ind...
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Unilateral nephrectomy of the adult animal results in compensatory renal growth but does not involve formation of new nephrons. It is not clear whether compensatory growth can occur during the period of active nephrogenesis in utero and if so, whether more nephrons can be formed. Male ovine fetuses (n = 20) underwent unilateral nephrectomy (n = 10) or sham nephrectomy (n = 10) at 100 d of gesta...
متن کاملIntravenous angiotensin induces brain c-fos expression and vasopressin release in the near-term ovine fetus.
The effect of intravenous angiotensin II (ANG II) on fetal brain c-fos expression and arginine vasopressin (AVP) release was studied in the near-term ovine fetus. Fetuses with chronically implanted catheters received an intravenous infusion of ANG II or saline. Fetal plasma AVP concentrations were significantly increased after the peripheral administration of ANG II, with peak levels (3-fold) a...
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in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 2001
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.2001.281.6.h2626