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Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress
Background: Fluoxetine, a selective serotonin re-uptake inhibitor (SSRI), has been proposed to be more effective as an antidepressive drug as compared to other SSRIs. After chronic SSRI administration, the increase in synaptic levels of 5-HT leads to desensitization of somatodentritic 5-HT autorecep...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5059824/ https://www.ncbi.nlm.nih.gov/pubmed/27752230 http://dx.doi.org/10.1016/j.jsps.2015.03.006 |
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author | Farhan, Muhammad Haleem, Darakshan Jabeen |
author_facet | Farhan, Muhammad Haleem, Darakshan Jabeen |
author_sort | Farhan, Muhammad |
collection | PubMed |
description | Background: Fluoxetine, a selective serotonin re-uptake inhibitor (SSRI), has been proposed to be more effective as an antidepressive drug as compared to other SSRIs. After chronic SSRI administration, the increase in synaptic levels of 5-HT leads to desensitization of somatodentritic 5-HT autoreceptors in the raphe nuclei. Chronic stress may alter behavioral, neurochemical and physiological responses to drug challenges and novel stressors. Methods: Twenty four male rats were used in this study. Animals of CMS group were exposed to CMS. Animals of stressed and unstressed group were administrated with fluoxetine at dose of 1.0 mg/kg s well as 5.0 mg/kg repeatedly for 07 days 1 h before exposed to CMS. The objective of the present study was to evaluate that repeated treatment with fluoxetine could attenuate CMS-induced behavioral deficits. Results: Treatment with fluoxetine attenuated CMS-induced behavioral deficits. Fluoxetine administration induced hypophagia in unstressed as well as CMS rats. Acute and repeated administration of fluoxetine increased motor activity in familiar environment but only repeated administration increased exploratory activity in open field. Anxiolytic effects of fluoxetine were greater in unstressed rats. These anxiolytic effects were produced as result of repeated administration not on acute administration of fluoxetine at 1.0 mg/kg as well as 5.0 mg/kg. Conclusion: The present study demonstrated that CMS exposure resulted into behavioral deficits and produced depressive-like symptoms. Fluoxetine, an SSRI, administration attenuated behavioral deficits induced by CMS. Anxiolytic effects of repeated fluoxetine administration were greater in unstressed than CMS animals. |
format | Online Article Text |
id | pubmed-5059824 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-50598242016-10-17 Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress Farhan, Muhammad Haleem, Darakshan Jabeen Saudi Pharm J Original Article Background: Fluoxetine, a selective serotonin re-uptake inhibitor (SSRI), has been proposed to be more effective as an antidepressive drug as compared to other SSRIs. After chronic SSRI administration, the increase in synaptic levels of 5-HT leads to desensitization of somatodentritic 5-HT autoreceptors in the raphe nuclei. Chronic stress may alter behavioral, neurochemical and physiological responses to drug challenges and novel stressors. Methods: Twenty four male rats were used in this study. Animals of CMS group were exposed to CMS. Animals of stressed and unstressed group were administrated with fluoxetine at dose of 1.0 mg/kg s well as 5.0 mg/kg repeatedly for 07 days 1 h before exposed to CMS. The objective of the present study was to evaluate that repeated treatment with fluoxetine could attenuate CMS-induced behavioral deficits. Results: Treatment with fluoxetine attenuated CMS-induced behavioral deficits. Fluoxetine administration induced hypophagia in unstressed as well as CMS rats. Acute and repeated administration of fluoxetine increased motor activity in familiar environment but only repeated administration increased exploratory activity in open field. Anxiolytic effects of fluoxetine were greater in unstressed rats. These anxiolytic effects were produced as result of repeated administration not on acute administration of fluoxetine at 1.0 mg/kg as well as 5.0 mg/kg. Conclusion: The present study demonstrated that CMS exposure resulted into behavioral deficits and produced depressive-like symptoms. Fluoxetine, an SSRI, administration attenuated behavioral deficits induced by CMS. Anxiolytic effects of repeated fluoxetine administration were greater in unstressed than CMS animals. Elsevier 2016-09 2015-03-20 /pmc/articles/PMC5059824/ /pubmed/27752230 http://dx.doi.org/10.1016/j.jsps.2015.03.006 Text en © 2015 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Article Farhan, Muhammad Haleem, Darakshan Jabeen Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title | Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title_full | Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title_fullStr | Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title_full_unstemmed | Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title_short | Anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
title_sort | anxiolytic profile of fluoxetine as monitored following repeated administration in animal rat model of chronic mild stress |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5059824/ https://www.ncbi.nlm.nih.gov/pubmed/27752230 http://dx.doi.org/10.1016/j.jsps.2015.03.006 |
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