Ultrastructural localization of hyaluronan in myelin sheaths of the rat central and rat and human peripheral nervous systems using hyaluronan-binding protein-gold and link protein-gold

P S Eggli, J Lucocq, P Ott, W Graber, E van der Zypen

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Neural tissue of central (rat spinal cord) and peripheral origin (rat sciatic nerve, nerve fascicles of rat skin and iris and of human conjunctiva) was processed by osmium tetroxide/microwave fixation and embedded in epoxy resin. Hyaluronan-binding proteins and link proteins coupled to 15-20-nm gold particles were used as markers in a one-step post-embedding procedure for identifying hyaluronan (hyaluronic acid) at the ultrastructural level. All myelin sheaths in both rat and human material were found to be intensely labelled. The specificity of the hyaluronan-binding probes was demonstrated by the total loss of labelling following treatment of sections with hyaluronidase or by preincubating either the probes with hyaluronan oligosaccharides or the sections with unlabelled hyaluronan-binding protein. The identified hyaluronan appears to be located extracellularly, but is precise role here remains to be elucidated.
Original languageEnglish
Pages (from-to)737-44
Number of pages8
JournalNeuroscience
Volume48
Issue number3
Publication statusPublished - 1992

Keywords

  • Animals
  • Antigens, CD44
  • Carrier Proteins
  • Central Nervous System
  • Extracellular Matrix Proteins
  • Gold
  • Histocytochemistry
  • Humans
  • Hyaluronic Acid
  • Hyaluronoglucosaminidase
  • Myelin Sheath
  • Peripheral Nerves
  • Protein Binding
  • Proteins
  • Proteoglycans
  • Rats
  • Rats, Inbred Strains
  • Staining and Labeling

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