Risperidone potentiates the sympathetic and hyperthermic reactions induced by orexin A in the rat

Title:

Risperidone potentiates the sympathetic and hyperthermic reactions induced by orexin A in the rat

Creator:

Monda, M., Viggiano, An., Viggiano, Al., Viggiano, E., and De Luca, V.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:37a27037-685b-4097-b369-a8b70402f763
uuid:37a27037-685b-4097-b369-a8b70402f763

Subject:

Body temperature, Orexin A, Rat, Risperidone, and Sympathetic activity

Type:

article, model:article, and TEXT

Description:

This experiment tested the effect of risperidone on the sympathetic and thermogenic effects induced by orexin A. The firing rates of sympathetic nerves to interscapular brown adipose tissue (IBAT), along with IBAT and colon temperatures and heart rate were monitored in urethane-anesthetized male Sprague-Dawley rats before an injection of orexin A (1.5 nmol) into the lateral cerebral ventricle and over a period of 2 hours after the injection. The same variables were monitored in rats with an intraperitoneal administration of risperidone (50 mg/kg bw), injected 30 min before the orexin administration. The results show that orexin A increases the sympathetic firing rate, IBAT, colonic temperatures and heart rate. This increase is enhanced by the injection of risperidone. These findings suggest that risperidone elevates the responses due to orexin, probably through an involvement of serotoninergic and dopaminergic pathways, which are affected by risperidone. Furthermore, we suggested the name "hyperthermine A" as additional denomination of "orexin A" by considering the strong influence of this neuropeptide on body temperature.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2006 Volume:55 | Number:1

Harvested from:

CDK

Metadata only:

false