Diverse changes in myelin protein expression in rat brain after perinatal methadone exposure

• Autorzy: Oberoi R. , Chu T. , Mellen N. , Jagadapillai R. , Ouyang H. , Devlin L.A. , Cai J.
• Języki publikacji: EN

Abstrakty

EN

The national incidence of neonatal abstinence syndrome has dramatically increased over the last decade due to an increase in antenatal opioid exposure. Recent human and animal studies suggest that antenatal opioid exposure impacts the developing brain. The purpose of this study is to evaluate the effects of perinatal methadone exposure on myelination in multiple regions in the developing rat brain. Pregnant Sprague-Dawley rats were randomly assigned into three experimental groups and subsequently exposed to drinking water alone or drinking water containing methadone from 7 days post coitum through day 7 or through day 19 after delivery. Two male neonatal rats were randomly selected from each litter and terminated at day 19. The cerebral cortex, hippocampus, cerebellum, and brainstem were dissected and analyzed for three myelin specific proteins – CNP, PLP, and MBP – by Western blot analysis. All pups with exposure to methadone demonstrated decreased expression of CNP, PLP, and MBP in the cerebral cortex and hippocampus. In the cerebellum, PLP expression was down-regulated without apparent alteration of CNP and MBP expression. PLP and MBP expression, but not CNP expression, were significantly inhibited in the brainstem. Compared to the pups with postnatal methadone exposure via maternal milk through day 7, partial recovery of CNP and PLP expression only occurred in the cerebral cortices of the pups exposed through day 19. The findings show that antenatal opioid exposure in rat pups is associated with regionally-specific alterations in brain myelination that diversely affects myelin proteins.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2019
• Tom: 79
• Numer: 4
• Opis fizyczny: p.367-373, fig.,ref.

Twórcy

autor

Oberoi R.

• Division of Neonatology, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA

autor

Chu T.

• Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA

autor

Mellen N.

• Department of Neurology, University of Louisville School of Medicine, Louisville, USA

autor

Jagadapillai R.

• Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA

autor

Ouyang H.

• Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA
• Department of Neurology, Danyang People’s Hospital, Danyang, P.R. China

autor

Devlin L.A.

• Division of Neonatology, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA

autor

Cai J.

• Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, USA

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Identyfikatory

DOI

10.21307/ane‑2019‑034