Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments.

Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments. Research Abstract Details 

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Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments. Abstract Text:

Toshio Kosaka,Katsuko Kosaka,

The structural features of parvalbumin-positive neurons were studied in the mouse main olfactory bulb (MOB). Parvalbumin-positive neurons were heterogeneous, including numerous medium-sized interneurons in the external plexiform layer (EPL), some few large short-axon cells and a few periglomerular cells. Their overall distribution pattern and structural features resembled those of the rat MOB. However, large short-axon cells were frequently encountered in the internal plexiform and granule cell layers, which were rare in the rat MOB. In addition a few large short-axon cells were also encountered throughout the EPL. These short-axon cells extended their axons mainly in the EPL, usually making columnar axonal fields. Most parvalbumin-positive cells except periglomerular cells were confirmed to be glutamic acid decarboxylase positive. We examined the immuno-localization of the markers for the axon initial segments (AISs), betaIV-spectrin and sodium channels, to determine whether or not heterogeneous parvalbumin-positive neurons have axons. We confirmed their localization on the AISs of the large short-axon cells and periglomerular cells. However, these markers were encountered on some patch-like segments on the dendritic processes instead of the thin axon-like processes of the medium-sized EPL interneurons. The present study revealed the diversity of parvalbumin-positive neurons in the mouse MOB and their particular structural properties hitherto unknown.

Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments. Publishing Authors By Initials

T Kosaka,K Kosaka,

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Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Neuroscience research

VOLUME: 60

Page Numbers: 56-72

Journal Abbreviation: Neurosci. Res.

ISSN: 0168-0102

DAY: 29

MONTH: 09

YEAR: 2007

Heterogeneity of parvalbumin-containing neurons in the mouse main olfactory bulb, with special reference to short-axon cells and betaIV-spectrin positive dendritic segments. Information

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LANGUAGE: eng

NlmUniqueID: 8500749

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AFFILIATION: Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan.

Country: Ireland

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MEDLINETA: Neurosci Res

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