Title : Central carbachol stimulates vasopressin release into interstitial fluid adjacent to the paraventricular nucleus.

Pub. Date : 1992 Oct 2

PMID : 1450914






6 Functional Relationships(s)
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1 Central carbachol stimulates vasopressin release into interstitial fluid adjacent to the paraventricular nucleus. Carbachol arginine vasopressin Rattus norvegicus
2 We have used an in vivo double microdialysis probe technique in conscious rats to determine whether the application of carbachol to one paraventricular nucleus (PVN) can result in increased local release of vasopressin from that PVN. Carbachol arginine vasopressin Rattus norvegicus
3 When carbachol (100 micrograms/ml) was included in the perfusate of one probe for the first 10 min of a 30-min collection period, while the other probe continued to be perfused with saline alone, there was a seven-fold increase in the concentration of vasopressin in the dialysate from the carbachol-perfused probe; the vasopressin concentration in the dialysate from the contralateral probe increased only slightly. Carbachol arginine vasopressin Rattus norvegicus
4 When carbachol (100 micrograms/ml) was included in the perfusate of one probe for the first 10 min of a 30-min collection period, while the other probe continued to be perfused with saline alone, there was a seven-fold increase in the concentration of vasopressin in the dialysate from the carbachol-perfused probe; the vasopressin concentration in the dialysate from the contralateral probe increased only slightly. Carbachol arginine vasopressin Rattus norvegicus
5 When one of the paired probes was perfused with carbachol (100 micrograms/ml) for 30 min, there were similar increases in the concentration of vasopressin in the dialysate from both probes and a sustained increase in the plasma vasopressin concentration. Carbachol arginine vasopressin Rattus norvegicus
6 When one of the paired probes was perfused with carbachol (100 micrograms/ml) for 30 min, there were similar increases in the concentration of vasopressin in the dialysate from both probes and a sustained increase in the plasma vasopressin concentration. Carbachol arginine vasopressin Rattus norvegicus