Multidimensional analysis of the concentrations of 17 substances in the CSF of schizophrenics and controls

Beckmann, H.; Gattaz, W. F.
May 2002
Journal of Neural Transmission;May2002, Vol. 109 Issue 5/6, p931
Academic Journal
Summary. The concentrations of 17 substances were determined in the cerebrospinal fluid (CSF) of 28 paranoid schizophrenic patients and 16 controls. Results were standardized and stimultaneously evaluated through Multidimensional Scaling (MDS). The full data set can be considered as a cloud of points consisting of the 44 subjects in the 17-dimensional parameter space. MDS seeks a two-dimensional representation of this 17-dimensional cloud of points, while retaining as much as possible the distances between the subjects. The two-dimensional reduction of the 17 CSF parameters correctly separated 15 of 16 controls from the schizophrenic subjects. This indicates that a biological heterogeneity between schizophrenic and nonschizophrenic subjects can be detected by the simultaneous analysis of the CSF concentrations of substances related directly or indirectly to the neuronal activity in the brain.


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