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 Bulljournal_title
Brain research bulletinauthors
Fregly MJ,Connor TM,Kikta DC,Threatte RMdoi
10.1016/0361-9230(80)90211-7subject
Has Abstractpub_date
1980-11-01 00:00:00pages
719-24issue
6eissn
0361-9230issn
1873-2747pii
0361-9230(80)90211-7journal_volume
5pub_type
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