PMID- 7591030 OWN - NLM STAT- MEDLINE DCOM- 19951128 LR - 20121115 IS - 0894-1491 (Print) IS - 0894-1491 (Linking) VI - 14 IP - 3 DP - 1995 Jul TI - Biochemical subtypes of oligodendrocyte in the anterior medullary velum of the rat as revealed by the monoclonal antibody Rip. PG - 185-97 AB - Oligodendrocytes were studied in the anterior medullary velum (AMV) of the rat using the monoclonal antibody Rip, an oligodendrocyte marker of unknown function. Confocal microscopic imaging of double immunofluorescent labelling with antibodies to Rip and carbonic anhydrase II (CAII) revealed two biochemically and morphologically distinct populations of oligodendrocyte which were either Rip+CAII+ or Rip+CAII-. Double immunofluorescent labelling with Rip and myelin basic protein (MBP) or glial fibrillary acidic protein (GFAP) provided direct evidence that Rip-labelled cells were phenotypically oligodendrocytes and confirmed that Rip did not recognise astrocytes. Oligodendrocytes which were Rip+CAII+ supported numerous myelin sheaths for small diameter axons, whilst Rip+CAII- oligodendrocytes supported fewer myelin sheaths for large diameter axons. Morphologically, Rip+CAII+ oligodendrocytes corresponded to types I or II of classical nomenclature, whilst Rip+CAII- oligodendrocytes corresponded to types III and IV. The results demonstrated a biochemical difference between oligodendrocytes which myelinated small and large diameter fibres. FAU - Butt, A M AU - Butt AM AD - Division of Physiology, U.M.D.S., Guy's Hospital, London, United Kingdom. FAU - Ibrahim, M AU - Ibrahim M FAU - Ruge, F M AU - Ruge FM FAU - Berry, M AU - Berry M LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Glia JT - Glia JID - 8806785 RN - 0 (Antibodies, Monoclonal) RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Myelin Basic Protein) RN - EC 4.2.1.1 (Carbonic Anhydrases) SB - IM MH - Animals MH - Antibodies, Monoclonal MH - Carbonic Anhydrases/analysis MH - Fluorescent Antibody Technique MH - Glial Fibrillary Acidic Protein/analysis MH - Male MH - Medulla Oblongata/*cytology MH - Microscopy, Confocal MH - Myelin Basic Protein/analysis MH - Oligodendroglia/*chemistry/immunology MH - Phenotype MH - Rats MH - Rats, Wistar EDAT- 1995/07/01 00:00 MHDA- 1995/07/01 00:01 CRDT- 1995/07/01 00:00 PHST- 1995/07/01 00:00 [pubmed] PHST- 1995/07/01 00:01 [medline] PHST- 1995/07/01 00:00 [entrez] AID - 10.1002/glia.440140304 [doi] PST - ppublish SO - Glia. 1995 Jul;14(3):185-97. doi: 10.1002/glia.440140304.