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Neocortical and hippocampal neuron and glial cell numbers in the rhesus monkey
- Source :
- Anatomical record (Hoboken, N.J. : 2007). 290(3)
- Publication Year :
- 2007
-
Abstract
- The rhesus monkey is widely used as an experimental animal model in the study of brain function and disease. While previous quantitative studies have provided knowledge of regional numbers, little is known of the total neocortical neuron and glial cell numbers in this species. The aim of this study is to establish quantitative norms. We use the optical fractionator and Cavalieri principle to examine the right hemisphere of eight young rhesus monkeys taken from the control group of an ongoing study. Applying these methods to agar-embedded and vibratome-sectioned tissue, we generate estimates of cell numbers and regional volumes of neocortical and hippocampal regions with coefficients of variance (CV) around 10%. The mean unilateral neocortical neuron number is 1.35 × 109 (CV ± 0.10) and the mean unilateral neocortical glial cell number is 0.78 × 109 (CV ± 0.17). Mean unilateral neocortical volume is found to be 8.5 (CV ± 0.10) cm3 after processing, or 19 cm3 when correcting for shrinkage. The neuron/glia ratio is 1.77. The neurons are distributed with 18% in the frontal cortex, 57% in the temporal and parietal cortices, and 25% in the occipital cortex. In the hippocampal subregions, we found unilateral neuron number of 1.72 × 106 (CV ± 0.13) and glial number of 2.25 × 106 (CV ± 0.17) in CA1, and 0.80 × 106 (CV ± 0.27) neurons and 1.05 × 106 (CV ± 0.26) glial cells in CA2–3. Comparisons with related studies show quantitative variation, but also variations in methods and applications. The results are phylogenetically consistent, apart from the neuron/glia ratio, which is remarkably higher than what is found in other species. Anat Rec, 2007. © 2007 Wiley-Liss, Inc.
- Subjects :
- Histology
Frontal cortex
Cell
Stereology
Cell Count
Neocortex
Biology
Hippocampal formation
Hippocampus
Reference Values
Cortex (anatomy)
medicine
Hippocampal neuron
Animals
Ecology, Evolution, Behavior and Systematics
Cell Size
Neurons
Models, Statistical
Anatomy
Macaca mulatta
medicine.anatomical_structure
Cavalieri's principle
nervous system
Neuron
Neuroglia
Biotechnology
Subjects
Details
- ISSN :
- 19328486
- Volume :
- 290
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Anatomical record (Hoboken, N.J. : 2007)
- Accession number :
- edsair.doi.dedup.....3015962944db9abc9e7c3b9ee07a834c