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Related Experiment Videos

Altered subicular MAP2 immunoreactivity in schizophrenia.

Gorazd Rosoklija1, John G Keilp, Glen Toomayan

  • 1Department of Neuroscience, New York State Psychiatric Institute, New York, NY 10032, USA. gbr2@columbia.edu

Prilozi
|January 10, 2006
PubMed
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Reduced microtubule-associated protein 2 (MAP2) in the subiculum was observed in some schizophrenia patients, correlating with fewer symptoms. This MAP2 loss may be an adaptive response in schizophrenia, unlike in dementia where it indicates neuronal damage.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cell Biology

Background:

  • Microtubule-associated protein 2 (MAP2) is crucial for neuronal structure and function.
  • Previous studies suggested reduced MAP2 in the subiculum of schizophrenia patients.

Purpose of the Study:

  • To independently verify the loss of subicular MAP2 in schizophrenia.
  • To investigate clinical associations with subicular MAP2 loss in psychiatric disorders.

Main Methods:

  • Immunohistochemistry for MAP2 in the hippocampus of 94 psychiatric patients and 17 controls.
  • Evaluation of lifelong symptomatology using the modified Diagnostic Evaluation After Death.

Main Results:

  • Subicular MAP2 immunoreactivity was reduced in 20% of schizophrenia, 8% of mood disorder, and 22% of dementia cases, but not in controls.

Related Experiment Videos

  • In schizophrenia, MAP2 loss correlated with fewer positive and negative symptoms.
  • In dementia, MAP2 loss was associated with subicular gliosis; this was not observed in schizophrenia.
  • Conclusions:

    • Reduced subicular MAP2 is present in a subset of schizophrenia patients and may represent an adaptive response.
    • MAP2 loss in schizophrenia differs from dementia, where it is linked to neuronal damage (gliosis).
    • Further research is needed to determine the underlying causes of decreased MAP2 in schizophrenia.