title: Monoclonal antibody HNK-1 selectively stains a subpopulation of GABAergic neurons containing the calcium-binding protein parvalbumin in the rat cerebral cortex.
abstract: Monoclonal antibody HNK-1 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 pre- and postembedding immunocytochemistry at light microscopic level. About 98% of HNK-1 stained cells in the rat parietal cortex were PV immunoreactive. About 95% of HNK-1 immunoreactive cells were also shown to be stained with a lectin, Vicia villosa agglutinin (VVA), with a specific affinity for terminal N-acetylgalactosamine, which has been previously shown to stain selectively a subpopulation of PV-containing GABAergic neurons in this region. Furthermore almost all HNK-1 immunoreactive cells were also stained with a monoclonal antibody, 3B3, which is specific for chondroitin sulfate proteoglycan. 3B3 was shown in the present study to stain selectively a subpopulation of PV-immunoreactive neurons in the adult rat parietal cortex. In addition, a direct comparison of two monoclonal antibodies HNK-1 and VC1.1 revealed that these two were identical in their staining properties and that they defined the same subset of PV-containing GABAergic neurons in the rat parietal cortex.
authors.affiliation: Department of Anatomy, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kosaka
authors.forename: K
authors.initials: K
authors.lastname: Isogai
authors.forename: C J
authors.initials: CJ
authors.lastname: Barnstable
authors.forename: C W
authors.initials: CW
authors.lastname: Heizmann
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation / Q000032:analysis*; D018959:CD57 Antigens; D002540:Cerebral Cortex / Q000166:cytology*; D005455:Fluorescent Antibody Technique; D007150:Immunohistochemistry; D008297:Male; D009474:Neurons / Q000166:cytology*; D010296:Parietal Lobe / Q000166:cytology*; D010320:Parvalbumins / Q000032:analysis*; D051381:Rats; D011919:Rats, Inbred Strains; D005680:gamma-Aminobutyric Acid / Q000502:physiology*
chemical_list: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation; D018959:CD57 Antigens; D010320:Parvalbumins; D005680:gamma-Aminobutyric Acid