title: Postnatal development of parvalbumin and calbindin D-28k immunoreactivities in the canine anterior cingulate cortex: transient expression in layer V pyramidal cells.
abstract: We have examined the ontogeny of parvalbumin (PV) and calbindin D-28k (CB) immunoreactivities in the canine anterior cingulate cortex (ACC) from the day of birth (P0) through P180. At P7, PV immunoreactivity first appeared in layer VI multipolar cells. The PV immunoreactivity in GABAergic nonpyramidal cells appeared to follow an inside-out gradient of radial emergence. Although immunoreaction was limited mainly to the developing nonpyramidal cells, pyramid-like PV immunoreactive cells were transitorily observed in layer V from P14 to P90. The developmental pattern of CB immunoreactivity differed from that of PV immunoreactivity. CB immunoreactivity first developed in layer V pyramidal cells from P0, which continued through P90. CB immunoreactive nonpyramidal cells were located in the infragranular layers and white matter at P0 and matured in both the supragranular and infragranular layers without clear inside-out gradient. This developmental study revealed the comparable belated expression of PV immunoreactivity and the transient expression of both calcium-binding proteins in layer V pyramidal cells. These results suggest that the transient expression of calcium-binding proteins in layer V pyramidal cells might be related to the critical period of early postnatal development.
authors.affiliation: Department of Anatomy, Chosun University Medical School, 375 Seosuckdong, Gwanju 501-759, South Korea.
authors.forename: Jeong Seok
authors.initials: JS
authors.lastname: Moon
authors.forename: Jong Joong
authors.initials: JJ
authors.lastname: Kim
authors.forename: In Youb
authors.initials: IY
authors.lastname: Chang
authors.forename: Yoon Young
authors.initials: YY
authors.lastname: Chung
authors.forename: Jae Yeoul
authors.initials: JY
authors.lastname: Jun
authors.forename: Ho Jin
authors.initials: HJ
authors.lastname: You
authors.forename: Sang Pil
authors.initials: SP
authors.lastname: Yoon
mesh_terms: D000375:Aging / Q000378:metabolism; D000818:Animals; D000831:Animals, Newborn; D064026:Calbindins; D002454:Cell Differentiation / Q000502:physiology*; D002465:Cell Movement / Q000502:physiology; D004285:Dogs; D015536:Down-Regulation / Q000502:physiology; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D006179:Gyrus Cinguli / Q000166:cytology / Q000254:growth & development* / Q000378:metabolism*; D007150:Immunohistochemistry; D007395:Interneurons / Q000166:cytology / Q000378:metabolism; D008297:Male; D009433:Neural Inhibition / Q000502:physiology; D010320:Parvalbumins / Q000378:metabolism*; D017966:Pyramidal Cells / Q000166:cytology / Q000378:metabolism*; D064030:S100 Calcium Binding Protein G / Q000378:metabolism*; D015854:Up-Regulation / Q000502:physiology; D005680:gamma-Aminobutyric Acid / Q000378:metabolism
chemical_list: D064026:Calbindins; D010320:Parvalbumins; D064030:S100 Calcium Binding Protein G; D005680:gamma-Aminobutyric Acid