osmostat


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osmostat

 [oz´mo-stat″]
the regulatory centers that control the osmolality of the extracellular fluid.

osmostat

(ŏz′mō-stăt)
The area in the anterior region of the hypothalamus that contains cells that control osmolality.
References in periodicals archive ?
A diagnosis of reset osmostat was made, and the patient was discharged without any sodium tablets and fluid restriction.
Psychological stress and acute psychosis may contribute to this transient resetting of the osmostat. [7] Other postulated hypotheses include stimulation of thirst centers by elevated dopamine levels, drinking to counteract anticholinergic side effects of psychotropic medications, and changes in feedback regulation of the hypothalamic-pituitary axis induced by chronic polydipsia.
[51] However, hypernatremia itself is not inducing polydipsia (instead osmostat, i.e., Free water clearance versus osmolality graph is shifted to the left [52,53]).
Her subsequent clinical course and poor response to tolvaptan suggest that she may have reset osmostat. Increase in AVP levels with initiation of treatment suggested reset osmostat driving the increased thirst and AVP levels.
With glucocorticoid deficiency, the hypotonic suppression of the osmostat for AVP release is impaired.
After washing, the RBCs were resuspended (haematocrit 3%) in the incubation buffer (35 mM [Na.sub.2]S[O.sup.4], 90 mM NaCl, 25 mM HEPES [N-(2-hydroxyethyl)-piperazine-N1-2-ethanesulfonic acid], and 1.5 mM Mg[Cl.sup.2]), adjusted to pH 7.4 or 7.3 and 310 [+ or -] 20 mOsmol per kg, measured by an Osmostat OM-6020 apparatus (Daiichikagakuco, Kyoto, Japan).
Both urine and serum osmolality were measured by freezing-point depression, using a Kyoto Daiichi osmostat, OM 6020 (Japan).
This week's report of the appeal included many details which hadn't come out at the original trial, facts which indicated that the osmostat, which regulates salt, was not working normally.
At the retrial, retired chemical pathologist Dr Glyn Walters, told the court he believed that Christian's osmostat - which regulates the amount of sodium in the body - had been 'reset', leading to the high levels found in his blood.
The Court of Appeal overturned their convictions and ordered a retrial after hearing new medical evidence that suggested Christian may have suffered from a rare condition know as a "reset osmostat", which causes the body to retain sodium.
Court of Appeal, which overturned their convictions and ordered a retrial after hearing new medical evidence that suggested Christian may have suffered from a rare condition know as a "reset osmostat", which causes the body to retain sodium.
But the Gays called on evidence that a rare condition - a reset osmostat - may have been to blame for the high level of sodium in his body.