Developmental gradients of vasoactive intestinal polypeptide (VIP)-containing neurons in the rat visual cortex detected by image analysis

Karl Zilles, M. Kálmán, Ferenc Hajós, Axel Schleicher

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The postnatal development of vasoactive intestinal polypeptide-immunoreactive (VIP-IR) neurons was followed by computer-assisted image analysis in the rat visual cortex. The laminar distribution of all VIP-IR structures was measured. These structures were subdivided into cell somata, dendritic profiles and axonal boutons and measured separately. VIP-IR neurons were first seen on postnatal day 1, mostly in the upper half of the presumptive visual cortex. A localization of cell bodies similar to that in the adult is reached between days 12 and 16. VIP-IR dendrites have a protracted growth period as compared to perikarya, involving a developmental gradient from an even distribution to a concentration in the upper cortical layers. This is due to the formation of dendritic terminal arbors after the second postnatal week. Scattered VIP-IT axonal boutons appear on day 3 in the midportion of the presumptive visual cortex. Their typical laminar distribution in layers II, IV and lower VI was observed after day 12. Our results suggest that the biochemically detected sharp increase in VIP levels after the second postnatal week is due to the maturation of cell processes as a morphological basis of neuronal connectivity.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalDevelopmental Brain Research
Volume60
Issue number2
DOIs
Publication statusPublished - Jun 21 1991

Fingerprint

Vasoactive Intestinal Peptide
Visual Cortex
Neurons
Computer-Assisted Image Processing
Carisoprodol
Dendrites
Dendritic Cells
Growth

Keywords

  • Image analysis
  • Immunohistochemistry
  • Ontogeny
  • Rat
  • Vasoactive intestinal peptide
  • Visual cortex

ASJC Scopus subject areas

  • Developmental Biology
  • Developmental Neuroscience

Cite this

Developmental gradients of vasoactive intestinal polypeptide (VIP)-containing neurons in the rat visual cortex detected by image analysis. / Zilles, Karl; Kálmán, M.; Hajós, Ferenc; Schleicher, Axel.

In: Developmental Brain Research, Vol. 60, No. 2, 21.06.1991, p. 137-144.

Research output: Contribution to journalArticle

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