Age-related changes in [3H]GBR 12935 binding site density in the prefrontal cortex of controls and schizophrenics.

Abstract

We investigated dopamine transporter receptor ligand binding in the prefrontal cortex as a function of age in schizophrenic and control postmortem brains. [3H]GBR 12935 binding constants were calculated by Scatchard analysis from the autopsied brains from 29 individuals with schizophrenia, and 28 control subjects. There were wide interindividual variations in Bmax and KD that were not related to gender, age, or postmortem interval (PMI) in controls. While there were no significant associations between gender, PMI, and Bmax, or KD in individuals with schizophrenia, there was a significant negative correlation between age and Bmax (r = -.44, p = .02). The slope of the regression lines between age and Bmax for the two groups was significantly different. The results suggest a differential effect of age, or something associated with age, on [3H]GBR 12935 binding sites in the prefrontal cortex of controls and individuals with schizophrenia.

• Authors: A Hitri, M F Casanova, J E Kleinman, D R Weinberger, R J Wyatt
• Journal: Biological psychiatry (Biol Psychiatry) Vol. 37 Issue 3 Pg. 175-82 (Feb 01 1995) ISSN: 0006-3223 [Print] United States
• PMID: 7727626 (Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)

Chemical References

• Carrier Proteins
• Dopamine Plasma Membrane Transport Proteins
• Membrane Glycoproteins
• Membrane Transport Proteins
• Nerve Tissue Proteins
• Piperazines
• 1-(2 (diphenylmethoxy)ethyl)-4-(3-phenylpropyl)piperazine

Topics

• Adult
• Age Factors
• Aged
• Aged, 80 and over
• Carrier Proteins (metabolism)
• Dopamine Plasma Membrane Transport Proteins
• Female
• Humans
• Male
• Membrane Glycoproteins
• Membrane Transport Proteins
• Middle Aged
• Nerve Tissue Proteins
• Piperazines (pharmacokinetics)
• Prefrontal Cortex (pathology)
• Radioligand Assay
• Reference Values
• Schizophrenia (pathology)