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- W2090416654 abstract "Observations were made on neurons of the substantia nigra in 10 cases of idiopathic Parkinsonism and 5 age-matched controls. It was found that the melanin-containing neurons of the zona compacta in the normal brain have a close spatial relationship with the blood circulation. The capillary walls appear fused to the membranes of neuronal perikarya and processes. In the Parkinsonian zona compacta the close contact between nigral neuron and capillary is lost. The findings suggest that this is due to the infiltration of the proliferated glia between cell surface and capillary wall. This neuronal vascular contact in the zona compacta of the normal brain must be of importance for the functional metabolism of this area, since interruption of this contact was the only detectable nigral lesion in several patients with overt symptoms of recent date. Histochemical reactions of normal and Parkinsonian melanin-containing neurons showed that the nigral cells of the patients have a larger amount of lipofuscin component in the melanin area than those of the controls. Increased basophilia was observed in the Parkinsonian neurons and was inversely related to their melanin content. It is interpreted as an expression of reduced firing activity, indicating regression of function." @default.
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- W2090416654 date "1971-01-01" @default.
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- W2090416654 title "Neuronal vascular relationships in the zona compacta of normal and parkinsonian substantia nigra" @default.
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- W2090416654 doi "https://doi.org/10.1016/0006-8993(71)90439-2" @default.
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