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Elevation of cell adhesion molecule immunoreactivity in the anterior cingulate cortex in bipolar disorder
Alan J Thomas1, Sue Davis, I Nicol Ferrier
1School of Neurology, Neurobiology and Psychiatry, University of Newcastle upon Tyne, UK.
Background:
Neuroimaging reports of increases in signal hyperintensities in white and deep gray matter and other work indicate that there might be an inflammatory response in affective disorders.
Methods:
The microvascular immunoreactivity of intercellular adhesion molecule-1 and vascular cell adhesion molecule-1 was measured with image analysis in postmortem tissue from the anterior cingulate cortex (ACC) and dorsolateral prefrontal cortex (DLPFC) from 15 unipolar and 15 bipolar subjects and compared with each other and with 15 subjects with schizophrenia and 15 control subjects.
Results:
Intercellular adhesion molecule-1 immunoreactivity in gray and white matter of the ACC in bipolar subjects was increased compared with control subjects (gray: p =.001; white: p <.001) and schizophrenic subjects (gray: p =.016; white: p =.025) and modestly increased in white matter compared with unipolar subjects (p =.049). No such differences were found in the DLPFC.
Conclusions:
These findings are consistent with the presence of an inflammatory response in the ACC in bipolar disorder.
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