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Science 12 July 1985:
Vol. 229. no. 4709, pp. 179 - 182
DOI: 10.1126/science.3892688
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Articles

Science, Vol 229, Issue 4709, 179-182
Copyright © 1985 by American Association for the Advancement of Science

articles

Diazepam-binding inhibitor: a neuropeptide located in selected neuronal populations of rat brain

H Alho, E Costa, P Ferrero, M Fujimoto, D Cosenza-Murphy, and A Guidotti

An endogenous polypeptide of rat brain has been identified that is capable of displacing 1,4-benzodiazepines and the esters of the 3-carboxylic acid derivatives of beta-carbolines from their specific synaptic binding sites. This polypeptide was termed diazepam-binding inhibitor (DBI). Previous studies have shown that DBI injected intraventricularly in rodents elicits "proconflict" responses and antagonizes the "anticonflict" action of benzodiazepines. An antiserum to this peptide, directed toward an immunodeterminant near its amino terminus, makes it possible to detect, measure, and study the neuronal location of this peptide in rat brain. In the rat cerebral cortex, DBI immunoreactivity is located in neurons that are not GABAergic (GABA, gamma-aminobutyric acid); in the cerebellum and hippocampus, however, it might be present also in GABAergic neurons.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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International Union of Pharmacology. XXI. Structure, Distribution, and Functions of Cholecystokinin Receptors.
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Evidence that background GABAergic tone and possible ligand release may alter the action of the 'neutral' benzodiazepine-receptor antagonist, Ro 15-1788, in hypothalamic self-stimulation.
L.J. Herberg, A.M.J. Montgomery, and I.C. Rose (1988)
J Psychopharmacol 2, 5-12
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Diazepam-Binding Inhibitor: A Brain Neuropeptide Present in Human Spinal Fluid: Studies in Depression, Schizophrenia, and Alzheimer's Disease.
M. L. Barbaccia, E. Costa, P. Ferrero, A. Guidotti, A. Roy, T. Sunderland, D. Pickar, S. M. Paul, and F. K. Goodwin (1986)
Arch Gen Psychiatry 43, 1143-1147
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