PMID- 3390712 OWN - NLM STAT- MEDLINE DCOM- 19880825 LR - 20190614 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 448 IP - 1 DP - 1988 May 10 TI - Occlusion of rostroventral 3rd ventricle abolishes drinking but not AVP release in response to central osmotic stimulation. PG - 121-7 AB - Dogs were implanted with a device for chronic cannulation of the anterior part of the 3rd ventricle (A3V). Intracerebroventricular (i.c.v.) infusion of artificial cerebrospinal fluid (CSF) containing 0.35 M NaCl into the A3V of 7 normally hydrated dogs induced thirst (average water intake 11.8 +/- 2.0 ml.kg-1 b. wt.) and significantly increased arginine-vasopressin (AVP) concentration in the blood plasma from 3.4 +/- 0.3 to 8.2 +/- 1.2 pg.ml-1. When repeating the i.c.v. hypertonic infusion at intervals of one week or more in two dogs, its dipsogenic effect vanished within 3-5 months. X-ray analysis revealed an occlusion of the rostroventral part of the A3V. Subsequent controls on 3 other dogs confirmed that the dipsogenic response to i.c.v. osmotic stimulation was abolished in association with similar partial occlusions of the A3V. However, this stimulus still produced a significant increase of plasma AVP from 3.7 +/- 0.5 to 5.7 +/- 0.7 pg.ml-1 in the 5 dogs. Control of drinking in these dogs was otherwise unimpaired as indicated by their normal plasma osmolalities. Histological examination revealed that the loss of the dipsogenic response to i.c.v. infusion of 0.35 M NaCl was in each case associated with fibrinous occlusion of the A3V between its rostral wall and the mass intermedia, preventing the passage of the infusate to the supraoptic and infundibular recesses. FAU - Eriksson, S AU - Eriksson S AD - Department of Physiology I, Karolinska Institutet, Stockholm, Sweden. FAU - Simon-Oppermann, C AU - Simon-Oppermann C FAU - Simon, E AU - Simon E FAU - Gray, D A AU - Gray DA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 113-79-1 (Arginine Vasopressin) RN - 451W47IQ8X (Sodium Chloride) SB - IM MH - Animals MH - Arginine Vasopressin/blood/*metabolism MH - Cerebral Ventricles/drug effects/*physiology MH - Dogs MH - *Drinking Behavior/drug effects MH - Female MH - Injections, Intraventricular MH - Male MH - Sodium Chloride/administration & dosage/pharmacology MH - Water-Electrolyte Balance EDAT- 1988/05/10 00:00 MHDA- 1988/05/10 00:01 CRDT- 1988/05/10 00:00 PHST- 1988/05/10 00:00 [pubmed] PHST- 1988/05/10 00:01 [medline] PHST- 1988/05/10 00:00 [entrez] AID - 0006-8993(88)91108-0 [pii] AID - 10.1016/0006-8993(88)91108-0 [doi] PST - ppublish SO - Brain Res. 1988 May 10;448(1):121-7. doi: 10.1016/0006-8993(88)91108-0.