Baclofen into the lateral parabrachial nucleus induces hypertonic sodium chloride and sucrose intake in rats

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Vasopressin and angiotensin receptors of the medial septal area in the control of mean arterial pressure induced by vasopressin

Introduction. Brain arginine(8)-vasopressin (AVP), through the V-1a- and V-2-receptors, is essential for the maintenance of mean arterial pressure (MAP). Central AVP interacts with the components of the renin-angiotensin system, which participate in MAP regulation. This study all to determine the effects of V-1a-, V-2- and V-1a/V-2-AVP selective antagonists and AT(1)- and AT(2)-angiotensin II (Ang II) selective antagonists on the MAP induced by AVP injected into the medial septal area (MSA) of the brain.Materials and methods. Male Holtzman rats with stainless steel cannulae implanted into the MSA were used in experiments. Direct MAP was recorded in Conscious rats.Results. AVP administration into the MSA caused a prompt and potent pressor response in a dose-dependent fashion. Pretreatment with the V-1a- and V-2-antagonists reduced, whereas prior injection of the V-1a/V-2-antagonist induced a decrease in the MAP that remained below the baseline. Both AT(1)- and AT(2)-antagonists elicited a decrease, While simultaneous injections of two antagonists were more effective in decreasing the MAP induced AVP.Conclusion. These results indicate there is a synergism bell the V-1a- and V-2-AVP, and AT(1)- AT, and AT(2)-Ang II receptors in the MSA in the regulation of MAP.

Activation of alpha(2)-adrenoceptors in the lateral hypothalamus reduces pilocarpine-induced salivation in rats

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Adrenergic mechanisms of the Kölliker-Fuse/A7 area on the control of water and sodium intake

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Involvement of the intermediate nucleus of the lateral septal area on angiotensin II-induced dipsogenic and pressor responses

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Lesions in the central amygdala impair sodium intake induced by the blockade of the lateral parabrachial nucleus

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Lateral parabrachial nucleus and central amygdala in the control of sodium intake

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Moxonidine into the lateral parabrachial nucleus reduces renal and hormonal responses to cell dehydration

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Inhibition of central angiotensin II-induced pressor responses by hydrogen peroxide

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Involvement of central alpha(1)-adrenoceptors on renal responses to central moxonidine and alpha-methylnoradrenaline

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Opioid activation in the lateral parabrachial nucleus induces hypertonic sodium intake

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Importance of central AT1 receptors for sodium intake induced by GABAergic activation of the lateral parabrachial nucleus

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Role of the medial septal area on pilocarpine-induced salivary secretion and water intake

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Central muscarinic receptor subtypes involved in pilocarpine-induced salivation, hypertension and water intake

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Purinergic mechanisms of lateral parabrachial nucleus facilitate sodium depletion-induced NaCl intake

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