Brain noradrenergic receptors in major depression and schizophrenia

  • Klimek V
  • Rajkowska G
  • Luker S
 et al. 
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Abstract

The binding of [125I]p-iodoclonidine to alpha-2, and/or [125I]iodopindolol to beta-1 and beta-2 adrenoceptors was measured in right prefrontal cortex (Brodmann's area 10) and right hippocampus from subjects with DSM-III-R diagnoses of major depression (n = 15) or schizophrenia (n = 8) as well as from control subjects (n = 20). No significant differences between study groups were observed in binding to alpha-2 adrenoceptors in any of the six layers of prefrontal cortex or in any of the hippocampal fields. Likewise, there were no significant differences in beta-1 or beta-2 adrenoceptor binding in any of the hippocampal fields between control and major depressive subjects. In contrast, binding to beta-1 adrenoceptors, but not beta-2 adrenoceptors, was significantly lower (-13 to -27%) in most hippocampal fields of schizophrenic subjects as compared to control subjects or to major depressives. Alterations in beta-1 adrenoceptor binding in the hippocampus of schizophrenics provide further evidence for a role of central noradrenergic neurons in the neurochemical pathology of schizophrenia. Copyright (C) 1999 American College of Neuropsychopharmacology.

Author-supplied keywords

  • Depression
  • Hippocampus
  • Noradrenergic receptors
  • Postmortem
  • Prefrontal cortex
  • Schizophrenia

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