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Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade

Atypical antipsychotics such as clozapine and olanzapine have been shown to enhance histamine turnover and this effect has been hypothesized to contribute to their improved therapeutic profile compared to typical antipsychotics. In the present study, we examined the effects of antipsychotic drugs on...

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Autores principales: Fell, Matthew J., Katner, Jason S., Rasmussen, Kurt, Nikolayev, Alexander, Kuo, Ming-Shang, Nelson, David L. G., Perry, Kenneth W., Svensson, Kjell A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Research Foundation 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354526/
https://www.ncbi.nlm.nih.gov/pubmed/22629251
http://dx.doi.org/10.3389/fpsyt.2012.00049
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author Fell, Matthew J.
Katner, Jason S.
Rasmussen, Kurt
Nikolayev, Alexander
Kuo, Ming-Shang
Nelson, David L. G.
Perry, Kenneth W.
Svensson, Kjell A.
author_facet Fell, Matthew J.
Katner, Jason S.
Rasmussen, Kurt
Nikolayev, Alexander
Kuo, Ming-Shang
Nelson, David L. G.
Perry, Kenneth W.
Svensson, Kjell A.
author_sort Fell, Matthew J.
collection PubMed
description Atypical antipsychotics such as clozapine and olanzapine have been shown to enhance histamine turnover and this effect has been hypothesized to contribute to their improved therapeutic profile compared to typical antipsychotics. In the present study, we examined the effects of antipsychotic drugs on histamine (HA) efflux in the mPFC of the rat by means of in vivo microdialysis and sought to differentiate the receptor mechanisms which underlie such effects. Olanzapine and clozapine increased mPFC HA efflux in a dose related manner. Increased HA efflux was also observed after quetiapine, chlorpromazine, and perphenazine treatment. We found no effect of the selective 5-HT(2A) antagonist MDL100907, 5-HT(2c) antagonist SB242084, or the 5-HT(6) antagonist Ro 04-6790 on mPFC HA efflux. HA efflux was increased following treatment with selective H(1) receptor antagonists pyrilamine, diphenhydramine, and triprolidine, the H(3) receptor antagonist ciproxifan and the mixed 5-HT(2A)/H(1) receptor antagonist ketanserin. The potential novel antipsychotic drug FMPD, which has a lower affinity at H(1) receptors than olanzapine, did not affect HA efflux. Similarly, other antipsychotics with lower H(1) receptor affinity (risperidone, aripiprazole, and haloperidol) were also without effect on HA efflux. Finally, HA efflux after antipsychotic treatment was significantly correlated with affinity at H(1) receptors whereas nine other receptors, including 5-HT(2A), were not. These results demonstrate that both typical and atypical antipsychotics increase mPFC histamine efflux and this effect may be mediated via antagonism of histamine H(1) receptors.
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spelling pubmed-33545262012-05-24 Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade Fell, Matthew J. Katner, Jason S. Rasmussen, Kurt Nikolayev, Alexander Kuo, Ming-Shang Nelson, David L. G. Perry, Kenneth W. Svensson, Kjell A. Front Psychiatry Psychiatry Atypical antipsychotics such as clozapine and olanzapine have been shown to enhance histamine turnover and this effect has been hypothesized to contribute to their improved therapeutic profile compared to typical antipsychotics. In the present study, we examined the effects of antipsychotic drugs on histamine (HA) efflux in the mPFC of the rat by means of in vivo microdialysis and sought to differentiate the receptor mechanisms which underlie such effects. Olanzapine and clozapine increased mPFC HA efflux in a dose related manner. Increased HA efflux was also observed after quetiapine, chlorpromazine, and perphenazine treatment. We found no effect of the selective 5-HT(2A) antagonist MDL100907, 5-HT(2c) antagonist SB242084, or the 5-HT(6) antagonist Ro 04-6790 on mPFC HA efflux. HA efflux was increased following treatment with selective H(1) receptor antagonists pyrilamine, diphenhydramine, and triprolidine, the H(3) receptor antagonist ciproxifan and the mixed 5-HT(2A)/H(1) receptor antagonist ketanserin. The potential novel antipsychotic drug FMPD, which has a lower affinity at H(1) receptors than olanzapine, did not affect HA efflux. Similarly, other antipsychotics with lower H(1) receptor affinity (risperidone, aripiprazole, and haloperidol) were also without effect on HA efflux. Finally, HA efflux after antipsychotic treatment was significantly correlated with affinity at H(1) receptors whereas nine other receptors, including 5-HT(2A), were not. These results demonstrate that both typical and atypical antipsychotics increase mPFC histamine efflux and this effect may be mediated via antagonism of histamine H(1) receptors. Frontiers Research Foundation 2012-05-17 /pmc/articles/PMC3354526/ /pubmed/22629251 http://dx.doi.org/10.3389/fpsyt.2012.00049 Text en Copyright © 2012 Fell, Katner, Rasmussen, Nikolayev, Kuo, Nelson, Perry and Svensson. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited.
spellingShingle Psychiatry
Fell, Matthew J.
Katner, Jason S.
Rasmussen, Kurt
Nikolayev, Alexander
Kuo, Ming-Shang
Nelson, David L. G.
Perry, Kenneth W.
Svensson, Kjell A.
Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title_full Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title_fullStr Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title_full_unstemmed Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title_short Typical and Atypical Antipsychotic Drugs Increase Extracellular Histamine Levels in the Rat Medial Prefrontal Cortex: Contribution of Histamine H(1) Receptor Blockade
title_sort typical and atypical antipsychotic drugs increase extracellular histamine levels in the rat medial prefrontal cortex: contribution of histamine h(1) receptor blockade
topic Psychiatry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3354526/
https://www.ncbi.nlm.nih.gov/pubmed/22629251
http://dx.doi.org/10.3389/fpsyt.2012.00049
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