Abstract:
:The extracellular matrix surrounds different neuronal compartments in the mature nervous system. In a variety of vertebrates, most brain regions are loaded with a distinct type of extracellular matrix around the somatodendritic part of neurons, termed perineuronal nets. The present study reports that chondrotin sulfate proteoglycan-based matrix is structured differently in the human lateral geniculate body. Using various chondrotin sulfate proteoglycan-based extracellular matrix antibodies, we show that perisomatic matrix labeling is rather weak or absent, whereas dendrites are contacted by axonal coats appearing as small, oval structures. Confocal laser scanning microscopy and electron microscopy demonstrated that these typical structures are associated with synaptic loci on dendrites. Using multiple labelings, we show that different chondrotin sulfate proteoglycan components of the extracellular matrix do not associate exclusively with neuronal structures but possibly associate with glial structures as well. Finally, we confirm and extend previous findings in primates that intensity differences of various extracellular matrix markers between magno- and parvocellular layers reflect functional segregation between these layers in the human lateral geniculate body.
journal_name
J Neurosci Resjournal_title
Journal of neuroscience researchauthors
Lendvai D,Morawski M,Brückner G,Négyessy L,Baksa G,Glasz T,Patonay L,Matthews RT,Arendt T,Alpár Adoi
10.1002/jnr.22761subject
Has Abstractpub_date
2012-02-01 00:00:00pages
376-87issue
2eissn
0360-4012issn
1097-4547journal_volume
90pub_type
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