Dipsogenic effect of L-5-hydroxytryptophan in rats.

Abstract:

:The precursor of serotonin, l-hydroxytryptophan (5HTP), is a potent dipsogen in the rat. Peripheral administration of increasing doses of this compound increased water intake in a dose-dependent fashion. Peripheral administration of other analogs of tryptophan, including d-tryptophan, l-tryptophan and acetyltryptophan, failed to affect water intake at a dose at which 5HTP induced maximal drinking (25 mg/kg, SC). The dipsogenic effect of melatonin, one of the metabolites of serotonin, was also tested. At any of 6 different doses (0.5 to 50 mg/kg, SC), melatonin failed to affect water intake in the rat. The mechanism by which 5HTP induces drinking is not known with certainty but could involve its conversion to serotonin, a known dipsogenic agent.

journal_name

Brain Res Bull

journal_title

Brain research bulletin

authors

Fregly MJ,Connor TM,Kikta DC,Threatte RM

doi

10.1016/0361-9230(80)90211-7

subject

Has Abstract

pub_date

1980-11-01 00:00:00

pages

719-24

issue

6

eissn

0361-9230

issn

1873-2747

pii

0361-9230(80)90211-7

journal_volume

5

pub_type

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