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• W2913771251 endingPage "235" @default.
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• W2913771251 abstract "Abstract In preterm infants, the changes from fetal life to ex‐utero conditions often coincide with reduced growth and white matter damage of the cerebellum. The premature increase in arterial oxygen tension caused by preterm birth may dysregulate cerebellar development. In a hyperoxia rat model of white matter damage to mimic a steep increase in oxygen levels by 24 h exposure to 80% O 2 from postnatal day 6 (P6) to day 7, we analyzed growth factor (GF) synthesis of cerebellar astrocytes. Determination of GF production was performed in astrocytes after Magnetic‐activated cell sorting (MACS) isolation from cerebelli after hyperoxia exposure ex vivo , and also in astroglial cultures. Oligodendrocyte progenitor cell (OPC) function was analyzed in cerebellar OPCs isolated by MACS after hyperoxia. Administration of PDGFA from P6 to P11, during hyperoxia and during 4 days recovery, was finally tested for protection of oligodendroglia and myelination. As a result, expression of the GFs Pdgfa , Fgf2 , and Bdnf was diminished in cerebellar astrocytes in vitro and in vivo . Gene expression of Olig1 , Olig2 , Sox9 , Sox10 , and Cnp was reduced in OPCs in vivo . Nasal PDGFA application improved oligodendroglial proliferation after hyperoxia at P7. However, this treatment effect vanished until P9. Impaired MBP expression after hyperoxia was attenuated by PDGFA treatment until P11, but not beyond when PDGFA supply was stopped. In this study on neonatal cerebellar injury, it is documented for the first time that improvement of oligodendroglial proliferation and of myelination can be achieved by PDGFA treatment. However, the treatment benefit is not maintained long term." @default.
• W2913771251 created "2019-02-21" @default.
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• W2913771251 date "2019-02-21" @default.
• W2913771251 modified "2023-10-16" @default.
• W2913771251 title "Transient Improvement of Cerebellar Oligodendroglial Development in a Neonatal Hyperoxia Model by PDGFA Treatment" @default.
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• W2913771251 doi "https://doi.org/10.1002/dneu.22667" @default.
• W2913771251 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30674088" @default.
• W2913771251 hasPublicationYear "2019" @default.
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