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Parvalbumin‐immunoreactive cells in the olfactory bulb of the pigeon: Comparison with the rat
Author(s) -
Lee TaeKyeong,
Park Joon Ha,
Ahn Ji Hyeon,
Park Young Eun,
Park Cheol Woo,
Lee JaeChul,
Choi Jung Hoon,
Hwang In Koo,
Kim Sunhyo,
Shim Jaeho,
Go Seokmin,
Lee Eunji,
Seo Kangmoon,
Won MooHo
Publication year - 2019
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/ahe.12445
Subject(s) - parvalbumin , olfactory bulb , biology , cresyl violet , gabaergic , calretinin , calcium binding protein , immunohistochemistry , staining , endocrinology , medicine , inhibitory postsynaptic potential , neuroscience , calcium , central nervous system , immunology , genetics
The olfactory bulb (OB) shows special characteristics in its phylogenetic cortical structure and synaptic pattern. In the OB, gamma‐aminobutyric acid (GABA), as an inhibitory neurotransmitter, is secreted from GABAergic neurons which contain parvalbumin (a calcium‐binding protein). Many studies on the distribution of parvalbumin‐immunoreactive neurons in the rodent OB have been published but poorly reported in the avian OB. Therefore, in this study, we compared the structure of the OB and distribution of parvalbumin‐immunoreactive neurons in the OB between the rat and pigeon using cresyl violet staining and immunohistochemistry for parvalbumin, respectively. Fundamentally, the pigeon OB showed layers like those of the rat OB; however, some layers were not clear like in the rat OB. Parvalbumin‐immunoreactive neurons in the pigeon OB were predominantly distributed in the external plexiform layer like that in the rat OB; however, the neurons did not have long processes like those in the rat. Furthermore, parvalbumin‐immunoreactive fibres were abundant in some layers; this finding was not shown in the rat OB. In brief, parvalbumin‐immunoreactive neurons were found like those in the rat OB; however, parvalbumin‐immunoreactive fibres were significantly abundant in the pigeon OB compared to those in the rat OB.