Journal
JOURNAL OF ANATOMY
Volume 205, Issue 4, Pages 313-321Publisher
WILEY
DOI: 10.1111/j.0021-8782.2004.00337.x
Keywords
cerebellum; human; quantification; stereology; total neuron number
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The dentate nucleus is phylogenetically the most recent nucleus in the cerebellum. Owing to its connections to the thalamus and the prefrontal cortex it may be involved in the symptomathology in schizophrenia and other psychiatric illnesses. In this stereological study we implemented the smooth fractionator, which combines the unbiased principles of the optical fractionator with a new and more efficient sampling strategy to the dentate nucleus. The smooth fractionator represents the most efficient sampling strategy described so far in stereology, in terms of reducing the sampling variance and thus increasing the efficiency. It is the first application of the smooth fractionator to human brain tissue and presents estimations of total number of neurons in the dentate nuclei of eight patients with schizophrenia compared to eight control persons. The total number of neurons in the dentate nucleus was estimated to 3.36 x 10(6) in subjects with schizophrenia, which was not statistically significant different from 3.65 x 10(6) in control subjects (P = 0.63). The advantages and disadvantages of the smooth fractionator method are discussed and its precision in practical application is estimated.
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