Lesions of the organum vasculosum of the lamina terminalis (OVLT) attenuate osmotically-induced drinking and vasopressin secretion in the dog

TN THRASHER, LC KEIL, DJ RAMSAY - Endocrinology, 1982 - academic.oup.com
TN THRASHER, LC KEIL, DJ RAMSAY
Endocrinology, 1982academic.oup.com
Drinking and secretion of arginine vasopressin (AVP) in response to intravenous infusion of
hypertonic NaCl were studied in dogs before and after destruction of the OVLT. The
functional relationship between plasma osmolality and plasma AVP was eliminated
following destruction of the OVLT. Furthermore, osmotically-induced drinking was
significantly reduced in dogs with OVLT lesions. These data are compatible with the
hypothesis that the OVLT contains osmoreceptors in the dog.
Drinking and secretion of arginine vasopressin (AVP) in response to intravenous infusion of hypertonic NaCl were studied in dogs before and after destruction of the OVLT. The functional relationship between plasma osmolality and plasma AVP was eliminated following destruction of the OVLT. Furthermore, osmotically-induced drinking was significantly reduced in dogs with OVLT lesions. These data are compatible with the hypothesis that the OVLT contains osmoreceptors in the dog.
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