期刊
HIPPOCAMPUS
卷 32, 期 10, 页码 752-764出版社
WILEY
DOI: 10.1002/hipo.23464
关键词
aging; calbindin; calcium-binding proteins; calretinin; latexin; neuroanatomy; parvalbumin
The retrosplenial cortex (RSC) is a brain region involved in crucial cognitive functions and commonly affected in neurodegenerative diseases. This study identified distinct distributions and marker proteins in subregions of RSC, suggesting the potential of using bat RSC as a model for studying age-related neurodegeneration.
Retrosplenial cortex (RSC) is a brain region involved in critical cognitive functions including memory, planning, and spatial navigation and is commonly affected in neurodegenerative diseases. Subregions of RSC are typically described as Brodmann areas 29 and 30, which are defined by cytoarchitectural features. Using immunofluorescence, we studied the distributions of neurons immunoreactive for NeuN, latexin, and calcium binding proteins (calbindin, calretinin, and parvalbumin) in RSC of Carollia perspicillata, Seba's short-tailed fruit bat. We observed that latexin was specifically present in areas 29a and 29b but not 29c and 30. We further identified distribution patterns of calcium binding proteins that group areas 29a and 29b separately from areas 29c and 30. We conclude first that latexin is a useful marker to classify subregions of RSC and second that these subregions contain distinct patterns of neuronal immunoreactivity for calcium binding proteins. Given the long lifespan of Carollia, bat RSC may be a useful model in studying age-related neurodegeneration.
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