RGD Reference Report - High-affinity neurotensin receptor is involved in phosphoinositide hydrolysis stimulation by carbachol in neonatal rat brain. - Rat Genome Database

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High-affinity neurotensin receptor is involved in phosphoinositide hydrolysis stimulation by carbachol in neonatal rat brain.

Authors: Pereyra-Alfonso, S  Lopez Ordieres, MG  Del V Armanino, M  De Lores Arnaiz, GR 
Citation: Pereyra-Alfonso S, etal., Brain Res Dev Brain Res. 2005 Feb 8;154(2):247-54. Epub 2005 Jan 11.
RGD ID: 9743914
Pubmed: PMID:15707678   (View Abstract at PubMed)
DOI: DOI:10.1016/j.devbrainres.2004.11.003   (Journal Full-text)

Ontogenetic studies indicate that inositol phosphate accumulation in rodent brain tissue by cholinergic muscarinic agonists as well as expression of high-affinity neurotensin receptor (NTS1) peak at 7 days after birth. Herein, potential participation of this receptor in such effect was investigated. Cerebral cortex prisms of 7-day-old rats were preloaded with [3H]myoinositol and later incubated during 60 or 20 min in the presence of muscarinic agonist carbachol plus neurotensin and SR 48692, a non-peptide NTS1 antagonist. In 60-min incubation experiments, inositol phosphate accumulation by 10(-3) M carbachol was roughly 320%, an effect which remained unaltered plus 10(-6) M to 10(-4) M neurotensin but partially decreased with equimolar SR 48692 concentration. In 20-min incubation experiments, inositol phosphate accumulation by 10(-3) M carbachol was circa 240%, a value which attained 320-360% plus 10(-7) M neurotensin; this effect was totally blocked by 10(-7) M SR 48692. It was concluded that in inositol phosphate accumulation by carbachol, besides the cholinergic muscarinic receptor, the NTS1 receptor is likewise involved; findings at 60 min are attributable to the effect of endogenous neurotensin whereas those at 20 min most likely involve both endogenous and exogenously added peptide.



Gene Ontology Annotations    

Biological Process

Objects Annotated

Genes (Rattus norvegicus)
Ntsr1  (neurotensin receptor 1)


Additional Information