Immunocytochemical localization studies of myelin basic protein.
The location of myelin encephalitogenic or basic protein (BP) in peripheral nervous system (PNS) and central nervous system (CNS) was investigated by immunofluorescence and horseradish peroxidase (HRP) immunocytochemistry. BP or cross-reacting material could be clearly localized to myelin by immunofluorescence and light microscope HRP immunocytochemistry. Fine structural studies proved to be much more difficult, especially in the CNS, due to problems in tissue fixation and penetration of reagents. Sequential fixation in aldehyde followed by ethanol or methanol provided the best conditions for ultrastructural indirect immunocytochemical studies. In PNS tissue, anti-BP was localized exclusively to the intraperiod line of myelin. Because of limitations in technique, the localization of BP in CNS myelin could not be unequivocally determined. In both PNS and CNS tissue, no anti-BP binding to nonmyelin cellular or membranous elements was detected.
Mendell
J R
JR
Department of Medicine (Neurology), Ohio State University College of Medicine, Columbus 43210, USA.
Whitaker
J N
JN
D000818:Animals; D001921:Brain / Q000166:cytology* / Q000648:ultrastructure; D002417:Cattle; D002421:Caudate Nucleus / Q000166:cytology / Q000648:ultrastructure; D005267:Femoral Nerve / Q000166:cytology* / Q000648:ultrastructure; D006168:Guinea Pigs; D000882:Haplorhini; D006735:Horseradish Peroxidase; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods; D008854:Microscopy, Electron; D004676:Myelin Basic Protein / Q000032:analysis*; D009186:Myelin Sheath / Q000648:ultrastructure; D012584:Sciatic Nerve / Q000166:cytology* / Q000648:ultrastructure; D013233:Stellate Ganglion / Q000166:cytology* / Q000648:ultrastructure
D004676:Myelin Basic Protein; D006735:Horseradish Peroxidase