title: Monoclonal antibody 473 selectively stains a population of GABAergic neurons containing the calcium-binding protein parvalbumin in the rat cerebral cortex.
abstract: Monoclonal antibody (MAb) 473 is shown to outline selectively a subpopulation of GABAergic neurons containing a specific calcium-binding protein parvalbumin (PV) in the adult rat parietal cortex, using preembedding immunocytochemistry at the light microscopic level. About 90% of MAb 473 stained cells in the rat parietal cortex were PV immunoreactive. Thus we compared MAb 473 staining with that of three chemical probes, previously shown to stain selectively a subpopulation of PV-containing GABAergic neurons in this brain region, namely, a lectin, Vicia villosa agglutinin (VVA), with a specific affinity for terminal N-acetyl-galactosamine, MAb 3B3 which is specific for chondroitin sulfate proteoglycan and MAb HNK-1 which is specific for some types of carbohydrate epitope containing a sulfated derivative of glucuronic acid. About 85% of MAb 473 immunoreactive cells were shown to be stained with VVA. Furthermore about 90% of MAb 473 immunoreactive cells were also stained with MAb 3B3. Thus MAb 473 positive cells were almost included into VVA and/or MAb 3B3 positive cells. On the other hand only about 34% of MAb 473 positive cells were HNK-1 positive, whereas about 44% of HNK-1 positive cells were MAb 473 positive. Thus these two MAbs defined different, though partially overlapping, subsets of PV-containing GABAergic neurons in the rat parietal cortex.
authors.affiliation: Department of Anatomy and Neurobiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kosaka
authors.forename: C W
authors.initials: CW
authors.lastname: Heizmann
authors.forename: S C
authors.initials: SC
authors.lastname: Fujita
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation / Q000032:analysis; D018959:CD57 Antigens; D002540:Cerebral Cortex / Q000166:cytology*; D007150:Immunohistochemistry / Q000379:methods; D008297:Male; D009474:Neurons / Q000166:cytology*; D010296:Parietal Lobe / Q000166:cytology*; D010320:Parvalbumins / Q000032:analysis* / Q000276:immunology; D051381:Rats; D011919:Rats, Inbred Strains; D013194:Staining and Labeling; D005680:gamma-Aminobutyric Acid / Q000032:analysis*
chemical_list: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation; D018959:CD57 Antigens; D010320:Parvalbumins; D005680:gamma-Aminobutyric Acid