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Integration of sodium and osmosensory signals in vasopressin neurons. | LitMetric

Integration of sodium and osmosensory signals in vasopressin neurons.

Trends Neurosci

Laboratoire de Physiologie Oro-Faciale, Faculté de Chirurgie Dentaire, 63000 Clermont Ferrand, France.

Published: April 2002

AI Article Synopsis

Article Abstract

Vasopressin (antidiuretic hormone) release has been thought to be controlled by interacting osmoreceptors and Na(+)-detectors for > 20 years. Only recently, however, have molecular and cellular advances revealed how changes in the external concentration of Na+ and osmolality are detected during acute and chronic osmotic perturbations. In rat vasopressin-containing neurons, local osmosensitivity is conferred by intrinsic stretch-inactivated cation channels and by taurine release from surrounding glia. Na+ detection is accomplished by acute regulation of the permeability of stretch-inactivated channels and by changes in Na+ channel gene expression. These features provide a first glimpse of the integrative processes at work in a central osmoregulatory reflex.

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Source
http://dx.doi.org/10.1016/s0166-2236(02)02142-2DOI Listing

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