Distribution of calcium-binding proteins parvalbumin and calbindin in the pigeon telencephalic auditory center

Immunoreactivity for calcium-binding proteins parvalbumin (PV) and calbindin (CB) was studied in the pigeon ( Columba livia ) telencephalic auditory center. All its regions displayed overlapping distribution patterns of PV and CB immunoreactivity, although in the central (L2) vs. peripheral (L1, L3,...

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Bibliographic Details
Published in:Journal of evolutionary biochemistry and physiology 2017-03, Vol.53 (2), p.143-152
Main Authors: Kenigfest, N. B., Belekhova, M. G., Chudinova, T. V.
Format: Article
Language:English
Subjects:
Animal Physiology
Biochemistry
Biomedical and Life Sciences
Birds
Calbindin
Calcium
Coordinate measuring machines
Cortex (auditory)
Ears & hearing
Evolutionary Biology
Immunoreactivity
Life Sciences
Morphological Basics for Evolution of Functions
Neurobiology
Neurons
Neuropil
Parvalbumin
Proteins
Telencephalon
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Summary:Immunoreactivity for calcium-binding proteins parvalbumin (PV) and calbindin (CB) was studied in the pigeon ( Columba livia ) telencephalic auditory center. All its regions displayed overlapping distribution patterns of PV and CB immunoreactivity, although in the central (L2) vs. peripheral (L1, L3, CMM) layers they were dissimilar. L2 and the inner L1 sublayer (L1i) were distinguished by a higher immunoreactivity of neuropil for both proteins and the presence (in L2) of numerous small densely packed granular-type cells: heavily stained PV-ir and, as a rule, poorly stained CB-ir neurons. In Lli, the number of neurons and the density of neuropil immunoreactive to both proteins decreased. The outer L1 sublayer (L1e) as well as L3 and CMM were characterized by a generally lesser density and irregular distribution of immunoreactive neuropil and a heterogenous repertoire of PV-ir and CB-ir neurons referring to diverse morphological types, with an increased number of large multipolar cells. The differences in PV and CB immunoreactivity among different regions of the pigeon telencephalic auditory center revealed the similarity of the latter to the laminar auditory cortex in mammals.
ISSN:0022-0930
1608-3202
DOI:10.1134/S1234567817020070