RGD Reference Report - Prenatal ethanol induces an anxiety phenotype and alters expression of dynorphin & nociceptin/orphanin FQ genes. - Rat Genome Database

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Prenatal ethanol induces an anxiety phenotype and alters expression of dynorphin & nociceptin/orphanin FQ genes.

Authors: Wille-Bille, Aranza  Miranda-Morales, Roberto Sebastián  Pucci, Mariangela  Bellia, Fabio  D'Addario, Claudio  Pautassi, Ricardo Marcos 
Citation: Wille-Bille A, etal., Prog Neuropsychopharmacol Biol Psychiatry. 2018 Jul 13;85:77-88. doi: 10.1016/j.pnpbp.2018.04.005. Epub 2018 Apr 18.
RGD ID: 401851055
Pubmed: PMID:29678771   (View Abstract at PubMed)
DOI: DOI:10.1016/j.pnpbp.2018.04.005   (Journal Full-text)

Animal models have suggested that prenatal ethanol exposure (PEE) alters the κ opioid receptor system. The present study investigated the brain expression of dynorphin and nociceptin/orphanin FQ related genes and assessed anxiety-like behavior in the light-dark box (LDB), shelter-seeking and risk-taking behaviors in the concentric square field (CSF) test, and ethanol-induced locomotion in the open field (OF), in infant or adolescent Wistar rats that were exposed to PEE (0.0 or 2.0 g/kg, intragastrically, gestational days 17-20). We measured brain mRNA levels of prodynorphin (PDYN), κ opioid receptors (KOR), the nociceptin/orphanin FQ opioid peptide precursor prepronociceptin (ppN/OFQ) and nociceptine/orphanin FQ receptors (NOR). Prenatal ethanol exposure upregulated PDYN and KOR mRNA levels in the ventral tegmental area (VTA) in infant and adolescent rats and KOR mRNA levels in the prefrontal cortex in infant rats. The changes in gene expression in the VTA were accompanied by a reduction of DNA methylation at the PDYN gene promoter, and by a reduction of DNA methylation at the KOR gene promoter. The PEE-induced upregulation of PDYN/KOR in the VTA was accompanied by lower NOR gene expression in the VTA, and lower PDYN gene expression in the nucleus accumbens. PEE rats exhibited hypolocomotion in the OF, greater avoidance of the white and brightly lit areas in the LDB and CSF, and greater preference for the sheltered area in the CSF test. These results suggest that PEE upregulates the dynorphin system, resulting in an anxiety-prone phenotype and triggering compensatory responses in the nociceptin/orphanin FQ system. These findings may help elucidate the mechanisms that underlie the effects of PEE and suggest that the dynorphin and nociceptin/orphanin FQ systems may be possible targets for the prevention and treatment of PEE-induced alterations.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
OPRK1Humanfetal alcohol spectrum disorder  ISOOprk1 (Rattus norvegicus)DNA more ...RGD 
OPRL1Humanfetal alcohol spectrum disorder  ISOOprl1 (Rattus norvegicus)mRNA:decreased expression:ventral tegmental areaRGD 
Oprk1Ratfetal alcohol spectrum disorder  IEP DNA more ...RGD 
Oprk1Mousefetal alcohol spectrum disorder  ISOOprk1 (Rattus norvegicus)DNA more ...RGD 
Oprl1Ratfetal alcohol spectrum disorder  IEP mRNA:decreased expression:ventral tegmental areaRGD 
Oprl1Mousefetal alcohol spectrum disorder  ISOOprl1 (Rattus norvegicus)mRNA:decreased expression:ventral tegmental areaRGD 
PDYNHumanfetal alcohol spectrum disorder  ISOPdyn (Rattus norvegicus)DNA more ...RGD 
PNOCHumanfetal alcohol spectrum disorder  ISOPnoc (Rattus norvegicus)mRNA:increased expression:nucleus accumbensRGD 
PdynRatfetal alcohol spectrum disorder  IEP DNA more ...RGD 
PdynMousefetal alcohol spectrum disorder  ISOPdyn (Rattus norvegicus)DNA more ...RGD 
PnocRatfetal alcohol spectrum disorder  IEP mRNA:increased expression:nucleus accumbensRGD 
PnocMousefetal alcohol spectrum disorder  ISOPnoc (Rattus norvegicus)mRNA:increased expression:nucleus accumbensRGD 

Objects Annotated

Genes (Rattus norvegicus)
Oprk1  (opioid receptor, kappa 1)
Oprl1  (opioid related nociceptin receptor 1)
Pdyn  (prodynorphin)
Pnoc  (prepronociceptin)

Genes (Mus musculus)
Oprk1  (opioid receptor, kappa 1)
Oprl1  (opioid receptor-like 1)
Pdyn  (prodynorphin)
Pnoc  (prepronociceptin)

Genes (Homo sapiens)
OPRK1  (opioid receptor kappa 1)
OPRL1  (opioid related nociceptin receptor 1)
PDYN  (prodynorphin)
PNOC  (prepronociceptin)


Additional Information