RGD Reference Report - Neuroanatomical and cellular substrates of hypergrooming induced by microinjection of oxytocin in central nucleus of amygdala, an experimental model of compulsive behavior. - Rat Genome Database

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Neuroanatomical and cellular substrates of hypergrooming induced by microinjection of oxytocin in central nucleus of amygdala, an experimental model of compulsive behavior.

Authors: Marroni, SS  Nakano, FN  Gati, CD  Oliveira, JA  Antunes-Rodrigues, J  Garcia-Cairasco, N 
Citation: Marroni SS, etal., Mol Psychiatry. 2007 Dec;12(12):1103-17. Epub 2007 May 15.
RGD ID: 2304137
Pubmed: PMID:17505467   (View Abstract at PubMed)
DOI: DOI:10.1038/sj.mp.4002015   (Journal Full-text)

Oxytocin (OT) is a neurosecretory nonapeptide synthesized in hypothalamic cells that project to the neurohypophysis as well as to widely distributed sites in the central nervous system. Central OT microinjections induce a variety of cognitive, sexual, reproductive, grooming and affiliative behaviors in animals. Obsessive-compulsive disorder (OCD) includes a range of cognitive and behavioral symptoms that bear some relationship with OT. Here, we study the neuroanatomical and cellular substrates of the hypergrooming induced by administration of OT in the central nucleus of amygdala (CeA). In this context, this hypergrooming is considered as a model of compulsive behavior. Our data suggest a link between the CeA and the hypothalamic grooming area (HGA). The HGA includes parts of the paraventricular nucleus and the dorsal hypothalamic area. Our data on colocalization of OT (immunohistochemistry for peptide), OT receptor (binding assay) and its retrogradely labeled cells after Fluoro-Gold injection in the CeA suggest that CeA and connections are important substrates of the circuit underlying this OT-dependent compulsive behavioral pattern.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
grooming behavior  IDA 2304137 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Oxt  (oxytocin/neurophysin I prepropeptide)


Additional Information