Postnatal development and age-related changes in the distribution of nitric oxide synthase-immunoreactive neurons in the visual system of rats

  • Yoon Hee Chung
  • , Kyeung Min Joo
  • , Yun Jung Lee
  • , Dong Hoon Shin
  • , Choong Ik Cha

Research output: Contribution to journalArticlepeer-review

Abstract

We have determined postnatal development and age-related changes in the distribution of neuronal nitric oxide synthase (nNOS) in the visual system including superior colliculus (SC), dorsal nucleus of lateral geniculate body (dLGB) and visual cortex of rats. In SC, the number and intensity of immunoreactive cells were increased until postnatal day 21 (P21), and were comparably decreased during the following days. Both neurons and neuropil were intensely stained in dLGB at P21, and the staining intensity was decreased in aged rats. The number of nNOS-immunoreactive cells was increased from P7 to P28 and was decreased in aged rats. The first demonstration of different staining patterns in SC, dLGB and visual cortex during the postnatal days and aging suggests that NO may mediate both postnatal refinement and age-associated visual deficits in some brain regions.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalNeuroscience Letters
Volume360
Issue number1-2
DOIs
StatePublished - 22 Apr 2004
Externally publishedYes

Keywords

  • Aging
  • Lateral geniculate body
  • Nitric oxide synthase
  • Postnatal development
  • Rat
  • Superior colliculus
  • Visual cortex

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