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Unaltered alpha(2)-noradrenergic/imidazoline receptors in suicide victims: a postmortem brain autoradiographic
R Gross-Isseroff1, A Weizman, S J Fieldust
1Department of Neurobiology, The Weizman Institute of Science, 76100, Rehovot, Israel. bmruth@weizmann.weizmann.ac.il
Abstract:
In vitro quantitative autoradiography of alpha(2)-adrenergic/imidazoline receptors, using [(125)I]iodoclonidine as a ligand, was performed on 24 human brains postmortem. Twelve brains were obtained from suicide victims and 12 from matched controls. We found no significant, region-dependent alterations in the density of alpha(2)-adrenergic receptors in brains of suicide victims as compared to matched controls. We also report age-dependent reductions in binding in the prefrontal cortex and hippocampus, as well as significant recent alcohol ingestion-dependent reductions in binding in the prefrontal cortex. Sex and time from death to autopsy did not affect iodoclonidine binding in our sample.