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Vasopressin release

ANPs play an important role in the maintenance of cardiovascular homeostasis by counterbalancing the renin—angiotensin (RAS) system. ANP, the main circulating form of the natriuretic peptides, effectively relaxes vascular smooth muscle, promotes the excretion of sodium and water, and in the CNS inhibits vasopressin release and antagonizes AT-II induced thirst. [Pg.528]

Vasopressin is a peptide hormone produced by the hypothalamus and secreted by the posterior pituitary in response to stimulation. Normal stimuli for vasopressin release are hyperosmolarity and hypovolemia, with thresholds for secretion of greater than 280 mOsm/kg and greater than 20% plasma volume depletion. A number of other stimuli, such as pain, nausea, epinephrine, and numerous drugs, induce release of vasopressin. Vasopressin release is inhibited by volume expansion, ethanol, and norepinephrine. The physiological effect of vasopressin is to promote free water clearence by altering the permeability of the renal collecting duct to water. In addition, it has a direct vasoconstrictor effect. Consequently, vasopressin results in water retention and volume restoration. In patients with septic shock, vasopressin is appropriately secreted in response to hypovolemia and to elevated serum osmolarity (R14). [Pg.97]

Ovarian hormones influence fluid intake by interaction with the brain renin-angiotensin system and it has been shown that gonadal steroids affect brain fluid-electrolyte balance by interactions with vasopressin. Both hyperos-molarity and increased intracranial pressure stimulate vasopressin release and intraperitoneal administration of vasopressin antagonists decrease brain volume. [Pg.596]

Vasopressin release is associated with sexual arousal and oxytocin release with orgasm. Oxytocin also may play a role in sexual satiety. (Murphy, et ah, 1987 reviewed Carter, 1992.)... [Pg.147]

Fluid and electrolytes Promote water excretion Increase glomerular filtration rate inhibit vasopressin release... [Pg.22]

Ebner K, Wotjak CT, Holsboer F, Landgraf R, Engelmann M (1999) Vasopressin released within the septal brain area during swim stress modulates the behavioimal stress response in rats. Em- J Nem-osci 11 997-1002... [Pg.134]

Levy, E, Kendrick, K.M., Goode, J.A., Guevara-Guzman, R., and Keverne, E.B. (1995) Oxytocin and vasopressin release in the olfactory bulb of parturient ewes changes with maternal experience and effects on acetylcholine, gamma-aminobutyric acid, glutamate and noradrenaline release. Brain Res 669 197-206. [Pg.208]

Vasopressin release has been claimed to be enhanced by metoclopramide, while aldosterone release is impaired (SED-12, 940). [Pg.622]

Dutton, A., and Dyball, R.E. Phasic firing enhances vasopressin release from the rat neurohypophysis. J Physiol 1979, 290 433-440. [Pg.226]

The regulation of vasopressin secretion by DA is multifaceted, likely involving participation of one or more separate populations of DA neurons under different physiological situations. Although the possibility exists that extrahypothalamic DA neurons may be involved in reflex activation of vasopressin release (Cornish et al., 1997),... [Pg.455]

There is also experimental evidence that central DA neurons may be involved in inhibiting activated vasopressin secretion. In normal hydrated rats icv administration of DA suppresses anesthesia-induced vasopressin secretion (Forsling and Williams, 1984). Conversely, icv injection of a DA antagonist enhances vasopressin secretion in response to hemorrhage (Yamaguchi et al., 1990). No information is availability, however, regarding the identity of diencephalic neurons mediating the suppressive effects of DA on stimulated vasopressin release. [Pg.457]

Brooks DP, Claybaugh JR (1982) Role of dopamine in the angiotensin Il-induced vasopressin release in the conscious dehydrated dog. J Endocrinol 94 243-249. [Pg.500]

Cornish JL, Wilks DP, Van den Buuse M (1997) A functional interaction between the mesolimbic dopamine system and vasopressin release in the regulation of blood pressure in concious rats. Neuroscience 81 69-78. [Pg.502]

Forsling ML, Williams H (1984) Central effects of dopamine on vasopressin release in the normally hydrated and water-loaded rat. J Physiol 346 49-59. [Pg.504]

Ivanyi T, Laczi F, Kovacs GL, Szabo G, Janaky T, Telegdy G, Laszlo FA (1986) Stimulatory effect of intracerebroventricularly administered dopamine on vasopressin release in rats. Exp Clin Endocrinol 5 303-308. [Pg.508]

Kimura T, Share L, Wang BC, Crofton JT (1981) Central effects of dopamine and bromocriptine on vasopressin release and blood pressure. Neuroendocrinology 33 347-351. [Pg.509]

Onaka T, Torigoe H, Yagi K (1992) A dopamine DI receptor antagonist, SCH 23390, selectively blocks vasopressin release after noxious stimuli in the rat. Neurosci Letts 736 157-160. [Pg.515]

Sladek CD (1983) Regulation of vasopressin release by neurotransmitters, neuropeptides and osmotic stimuli, In Cross BA, Leng G (Eds.), The Neurohypophysis Structure, Function and Control, Prog. Brain Res., Vol. 60, pp. 71-90. Elsevier, Amsterdam. [Pg.519]

Ikeda Y, Teramoto A, Nakagawa Y, Ishibashi Y, Yoshii T (1997b) Attenuation of cryogenic induced brain oedema by arginine vasopressin release inhibitor RU51599. Acta Neuiochir (Wien) 139 1173-1180... [Pg.160]

Ikeda Y, Toda S, Kawamoto T, Teramoto A (1997a) Arginine vasopressin release inhibitor RU51599 attenuates brain oedema following transient forebrain ischaemia in rats. Acta Neurochir (Wien) 139 1166-1172... [Pg.160]

Zubrzycka M, Janecka A (2007) Effect of tooth pulp stimulation on oxytocin tind vasopressin release into the cerebrospinal fluid and fluid perfusing the cerebral ventricles in tats. Endocr Regul 41 149-154... [Pg.535]

Bode U, Seif SM, and Eevin AS. Studies on the antidiuretic effect of cyclophosphamide vasopressin release and sodium excretion. Med Pediatr Oncol 8 295-303,1980... [Pg.530]

Dayanithi G, Weller U, Ahnert-Hilger G etal. (1992) The light chain of tetanus toxin inhibits calcium-dependent vasopressin release from permeabilized nerve endings. Neuroscience 46 489-93. [Pg.212]

Besides the osmoreceptor mechanism of vasopressin release, the physiological regulation of vasopressin secretion also involves a pressure-volume mechanism that is distinct from the osmotic sensor. AVP release is regulated by baro-receptors that respond to alterations in blood volume. For example, a reduction in plasma volume or arterial pressure,... [Pg.1991]

See other pages where Vasopressin release is mentioned: [Pg.274]    [Pg.1066]    [Pg.1068]    [Pg.391]    [Pg.185]    [Pg.466]    [Pg.89]    [Pg.261]    [Pg.330]    [Pg.362]    [Pg.363]    [Pg.365]    [Pg.223]    [Pg.228]    [Pg.150]    [Pg.174]    [Pg.442]    [Pg.456]    [Pg.457]    [Pg.274]    [Pg.1066]    [Pg.1068]    [Pg.188]    [Pg.1992]   
See also in sourсe #XX -- [ Pg.938 ]



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Vasopressin

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