Neurochemical Research

, Volume 9, Issue 8, pp 1051–1063 | Cite as

RNA synthesis in neuronal and glial cell nuclei from rat cerebral hemispheres during early postnatal development

  • I. Serra
  • R. Avola
  • A. Vanella
  • B. Lombardo
  • A. Agodi
  • A. M. Giuffrida
Original Articles


RNA synthesis in rat cerebral hemispheres at 1, 5, and 10 days of age and the relative contribution brought by neuronal and glial nuclei to RNA synthesis was investigated. The experiments were carried out both in vivo (by i.p. injection of [3H]uridine) and in vitro (either by incubation of tissue slices with [3H]uridine or by determination of RNA polymerase activities). The labeling of RNA decreases from 1 to 10 days of age both in vivo and in vitro; the decrease is of the same extent in neuronal and glial nuclei. RNA polymerase activity Mg2+-dependent does not change significantly from 1 to 10 days of age either in total, in neuronal, or in glial nuclei, whereas the Mn2+-dependent activity increases significantly over the same developmental period studied. The significance of RNA polymerase assay as an index of in vivo RNA synthesis is discussed.


Glial Cell Cell Nucleus Uridine Cerebral Hemisphere Developmental Period 
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Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • I. Serra
    • 1
  • R. Avola
    • 1
  • A. Vanella
    • 1
  • B. Lombardo
    • 1
  • A. Agodi
    • 1
  • A. M. Giuffrida
    • 1
  1. 1.Institute of BiochemistryUniversity of CataniaCataniaItaly

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