Anatomy and Embryology

, Volume 181, Issue 2, pp 157–166 | Cite as

Distribution of neuropeptide Y in the prosencephalon of man and Cotton-head Tamarin (Saguinus oedipus): colocalization with somatostatin in neurons of striatum and amygdala

  • M. Schwartzberg
  • J. Unger
  • A. Weindl
  • W. Lange
Article

Summary

The presence, chromatographic properties and localization of neuropeptide Y was demonstrated in postmortem human brain areas of neurologically and neuropsychiatrically normative controls using immunocytochemistry and high performance liquid chromatography combined with radioimmunoassay. NPY-immunoreactivity was found in many regions of the prosencephalon. Numerous perikarya and fibers were present in the neocortex, basal ganglia and limbic-hypothalamic areas. A moderate number of neurons and fibers was observed in the basal forebrain, including the septal complex. A comparative immunohistochemical investigation in perfusion-fixed brains of the old-world ape Saguinus oedipus revealed an almost identical distribution of NPY-immunoreactivity with only minor differences. Colocalization experiments on 1–2 μm thin consecutive paraffin sections revealed a large number of NPY neurons throughout the human neostriatum and amygdaloid complex that were also positive for somatostatin. Our findings indicate that detection of neuropeptides in fresh or fixed post-mortem human tissue by different immunochemical methods may actually reflect the in vivo conditions. In addition, the wide distribution of NPY throughout the human brain and its colocalization with other neurotransmitters suggests a physiological role as neuroactive substance, i.e. neuromodulator in the primate central nervous system.

Key words

Neuropeptide Y Human brain Immunocytochemistry High performance liquid chromatography Colocalization 

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • M. Schwartzberg
    • 1
  • J. Unger
    • 1
  • A. Weindl
    • 2
  • W. Lange
    • 1
  1. 1.Department of AnatomyUniversity of MunichMünchenFederal Republic of Germany
  2. 2.Department of NeurologyTechnical University of MunichMünchenFederal Republic of Germany

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