Linked Life Data

7898751

Source:http://linkedlifedata.com/resource/pubmed/id/7898751

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1995-4-27
pubmed:abstractText
A central dysregulation of several neuropeptides could be at the origin of the marked hyperphagia of the obese Zucker rat, a well-known animal model used for the study of obesity. Neuropeptide Y (NPY), which stimulates food intake and increases early in life in obese rats, plays a major role in the development of this hyperphagia. The aim of our experiment was to test a proposed NPY antagonist namely PYX-2 in obese hyperphagic Zucker rats in order to know if it could be an interesting drug for limiting their food intakes. Four doses of PYX-2 (50-1000 pmol) were injected in a counterbalanced order in the lateral brain ventricles of 10 adult male Zucker rats. Food intake was recorded 0.5, 1, 2, 3, 6, and 23 h after PYX-2 injection and compared either to the rat's spontaneous food intake or to the food intake following injection of artificial CSF (vehicle) only. It was not modified by any dose of PYX-2 whatever the time considered (1 h after injection: 4.3 +/- 0.5 (1000 pmol) vs 4.6 +/- 0.8 (CSF) g; 23 h period: 27.0 +/- 1.9 (1000 pmol) vs 26.6 +/- 2.9 (CSF) g; N.S.). Thus, PYX-2, the putative NPY antagonist, totally failed to inhibit food intake in the obese rats. The absence of effect of PYX-2 on food intake can be explained by the structure of PYX-2, a modified 27-36 amino acid sequence that may not be recognized by the Y1-type NPY receptors which are involved in the regulation of feeding behavior.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
181
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
126-8
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Putative neuropeptide Y antagonist failed to decrease overeating in obese Zucker rats.
pubmed:affiliation
INSERM U.308, Mécanismes de Régulation du Comportement Alimentaire, Nancy, France.
pubmed:publicationType
Journal Article