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Kiyosawa, M. et al.

Cortical hypometabolism and its recovery following nucleus basalis lesions in baboons: a PET study.

The cerebral metabolic rate for glucose was measured serially with positron emission tomography and [18F]fluorodeoxyglucose in five baboons with stereotactic electrocoagulation of the left nucleus basalis of Meynert (NbM). Four days after lesion, a significant metabolic depression was present in the ipsilateral cerebral cortex, most marked in the frontotemporal region, and which recovered progressively within 6-13 weeks. These data demonstrate that adaptive mechanisms efficiently compensate for the cortical metabolic effects of NbM-lesion-induced cholinergic deafferentation. Moreover, unilateral NbM lesions also induced a transient reduction in contralateral cortical metabolic rate, the mechanisms of which are discussed. Explanation of these effects of cholinergic deafferentation in the primate could further our understanding of the metabolic deficits observed in dementia of the Alzheimer's type.[1]

References

Cortical hypometabolism and its recovery following nucleus basalis lesions in baboons: a PET study. Kiyosawa, M., Pappata, S., Duverger, D., Riche, D., Cambon, H., Mazoyer, B., Samson, Y., Crouzel, C., Naquet, R., MacKenzie, E.T. J. Cereb. Blood Flow Metab. (1987) [Pubmed]

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