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Quantification of extracellular levels of corticosterone in the basolateral amygdaloid complex of freely-moving rats: A dialysis study of circadian variation and stress-induced modulation
Abstract Corticosterone influences emotion and cognition via actions in a diversity of corticolimbic structures, including the amygdala. Since extracellular levels of corticosterone in brain have rarely been studied, we characterized a specific and sensitive enzymatic immunoassay for microdialysis q...
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Published in: | Brain research 2012-05, Vol.1452, p.47-60 |
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description | Abstract Corticosterone influences emotion and cognition via actions in a diversity of corticolimbic structures, including the amygdala. Since extracellular levels of corticosterone in brain have rarely been studied, we characterized a specific and sensitive enzymatic immunoassay for microdialysis quantification of corticosterone in the basolateral amygdaloid complex of freely-moving rats. Corticosterone levels showed marked diurnal variation with an evening (dark phase) peak and stable, low levels during the day (light phase). The “anxiogenic agents”, FG7142 (20 mg/kg) and yohimbine (10 mg/kg), and an environmental stressor, 15-min forced-swim, induced marked and sustained (1–3 h) increases in dialysis levels of corticosterone in basolateral amygdaloid complex. They likewise increased dialysis levels of dopamine and noradrenaline, but not serotonin and GABA. As compared to basal corticosterone levels of ~ 200–300 pg/ml, the elevation provoked by forced-swim was ca. 20-fold and this increase was abolished by adrenalectomy. Interestingly, stress-induced rises of corticosterone levels in basolateral amygdaloid complex were abrogated by combined but not separate administration of the corticotrophin releasing factor1 (CRF1 ) receptor antagonist, CP154,526, and the vasopressin1b (V1b ) receptor antagonist, SSR149,415. Underpinning their specificity, they did not block forced-swim-induced elevations in dopamine and noradrenaline. In conclusion, extracellular levels of corticosterone in the basolateral amygdaloid complex display marked diurnal variation. Further, they are markedly elevated by acute stressors, the effects of which are mediated (in contrast to concomitant elevations in levels of monoamines) by co-joint recruitment of CRF1 and V1b receptors. |
doi_str_mv | 10.1016/j.brainres.2012.01.010 |
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Since extracellular levels of corticosterone in brain have rarely been studied, we characterized a specific and sensitive enzymatic immunoassay for microdialysis quantification of corticosterone in the basolateral amygdaloid complex of freely-moving rats. Corticosterone levels showed marked diurnal variation with an evening (dark phase) peak and stable, low levels during the day (light phase). The “anxiogenic agents”, FG7142 (20 mg/kg) and yohimbine (10 mg/kg), and an environmental stressor, 15-min forced-swim, induced marked and sustained (1–3 h) increases in dialysis levels of corticosterone in basolateral amygdaloid complex. They likewise increased dialysis levels of dopamine and noradrenaline, but not serotonin and GABA. As compared to basal corticosterone levels of ~ 200–300 pg/ml, the elevation provoked by forced-swim was ca. 20-fold and this increase was abolished by adrenalectomy. Interestingly, stress-induced rises of corticosterone levels in basolateral amygdaloid complex were abrogated by combined but not separate administration of the corticotrophin releasing factor1 (CRF1 ) receptor antagonist, CP154,526, and the vasopressin1b (V1b ) receptor antagonist, SSR149,415. Underpinning their specificity, they did not block forced-swim-induced elevations in dopamine and noradrenaline. In conclusion, extracellular levels of corticosterone in the basolateral amygdaloid complex display marked diurnal variation. Further, they are markedly elevated by acute stressors, the effects of which are mediated (in contrast to concomitant elevations in levels of monoamines) by co-joint recruitment of CRF1 and V1b receptors.</description><identifier>ISSN: 0006-8993</identifier><identifier>EISSN: 1872-6240</identifier><identifier>DOI: 10.1016/j.brainres.2012.01.010</identifier><identifier>PMID: 22464880</identifier><identifier>CODEN: BRREAP</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Amygdala ; Amygdala - drug effects ; Amygdala - metabolism ; Animals ; antagonists ; Biological and medical sciences ; Carbolines - pharmacology ; Chronobiology ; Circadian Rhythm - physiology ; cognition ; Corticosterone ; Corticosterone - metabolism ; Corticosterone - pharmacology ; corticotropin ; CRF ; diurnal variation ; dopamine ; Dopamine - metabolism ; Fundamental and applied biological sciences. Psychology ; gamma-Aminobutyric Acid - metabolism ; immunoassays ; Microdialysis ; monoamines ; Neurology ; norepinephrine ; Norepinephrine - metabolism ; Rats ; receptors ; recruitment ; serotonin ; Serotonin - metabolism ; Stress ; Stress, Psychological - metabolism ; Vasopressin ; Vertebrates: anatomy and physiology, studies on body, several organs or systems ; yohimbine ; Yohimbine - pharmacology</subject><ispartof>Brain research, 2012-05, Vol.1452, p.47-60</ispartof><rights>Elsevier B.V.</rights><rights>2012 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2012 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c510t-38225e87f58dff69cc14b7f758ec73381434c8b9f8c85519fd386c2e35d853b63</citedby><cites>FETCH-LOGICAL-c510t-38225e87f58dff69cc14b7f758ec73381434c8b9f8c85519fd386c2e35d853b63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25840701$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22464880$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bouchez, Gaëlle</creatorcontrib><creatorcontrib>Millan, Mark J</creatorcontrib><creatorcontrib>Rivet, Jean-Michel</creatorcontrib><creatorcontrib>Billiras, Rodolphe</creatorcontrib><creatorcontrib>Boulanger, Raphaël</creatorcontrib><creatorcontrib>Gobert, Alain</creatorcontrib><title>Quantification of extracellular levels of corticosterone in the basolateral amygdaloid complex of freely-moving rats: A dialysis study of circadian variation and stress-induced modulation</title><title>Brain research</title><addtitle>Brain Res</addtitle><description>Abstract Corticosterone influences emotion and cognition via actions in a diversity of corticolimbic structures, including the amygdala. Since extracellular levels of corticosterone in brain have rarely been studied, we characterized a specific and sensitive enzymatic immunoassay for microdialysis quantification of corticosterone in the basolateral amygdaloid complex of freely-moving rats. Corticosterone levels showed marked diurnal variation with an evening (dark phase) peak and stable, low levels during the day (light phase). The “anxiogenic agents”, FG7142 (20 mg/kg) and yohimbine (10 mg/kg), and an environmental stressor, 15-min forced-swim, induced marked and sustained (1–3 h) increases in dialysis levels of corticosterone in basolateral amygdaloid complex. They likewise increased dialysis levels of dopamine and noradrenaline, but not serotonin and GABA. As compared to basal corticosterone levels of ~ 200–300 pg/ml, the elevation provoked by forced-swim was ca. 20-fold and this increase was abolished by adrenalectomy. Interestingly, stress-induced rises of corticosterone levels in basolateral amygdaloid complex were abrogated by combined but not separate administration of the corticotrophin releasing factor1 (CRF1 ) receptor antagonist, CP154,526, and the vasopressin1b (V1b ) receptor antagonist, SSR149,415. Underpinning their specificity, they did not block forced-swim-induced elevations in dopamine and noradrenaline. In conclusion, extracellular levels of corticosterone in the basolateral amygdaloid complex display marked diurnal variation. Further, they are markedly elevated by acute stressors, the effects of which are mediated (in contrast to concomitant elevations in levels of monoamines) by co-joint recruitment of CRF1 and V1b receptors.</description><subject>Amygdala</subject><subject>Amygdala - drug effects</subject><subject>Amygdala - metabolism</subject><subject>Animals</subject><subject>antagonists</subject><subject>Biological and medical sciences</subject><subject>Carbolines - pharmacology</subject><subject>Chronobiology</subject><subject>Circadian Rhythm - physiology</subject><subject>cognition</subject><subject>Corticosterone</subject><subject>Corticosterone - metabolism</subject><subject>Corticosterone - pharmacology</subject><subject>corticotropin</subject><subject>CRF</subject><subject>diurnal variation</subject><subject>dopamine</subject><subject>Dopamine - metabolism</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>gamma-Aminobutyric Acid - metabolism</subject><subject>immunoassays</subject><subject>Microdialysis</subject><subject>monoamines</subject><subject>Neurology</subject><subject>norepinephrine</subject><subject>Norepinephrine - metabolism</subject><subject>Rats</subject><subject>receptors</subject><subject>recruitment</subject><subject>serotonin</subject><subject>Serotonin - metabolism</subject><subject>Stress</subject><subject>Stress, Psychological - metabolism</subject><subject>Vasopressin</subject><subject>Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><subject>yohimbine</subject><subject>Yohimbine - pharmacology</subject><issn>0006-8993</issn><issn>1872-6240</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFktuKFDEQhhtR3HH0FdbcCN70mPQx7YXssniCBZF1r0M6qYwZ08mYdA_bz-bLWe3MKnizEAipfFX5U39l2TmjG0ZZ82a36aO0PkLaFJQVG8pw0UfZivG2yJuioo-zFaW0yXnXlWfZs5R2eCzLjj7NzoqiairO6Sr79XWSfrTGKjna4EkwBO7GKBU4NzkZiYMDuLTEVYijVSGNEIMHYj0ZvwPpZQpOYkw6Iod5q6ULViM87B3cLXkmArg5H8LB-i2JckxvySXRVro52UTSOOn5T30blcSwJwcZ7VGO9BoB_GXKrdeTAk2GoFHYcvs8e2KkS_DitK-z2w_vv119yq-_fPx8dXmdq5rRMS95UdTAW1NzbUzTKcWqvjVtzUG1ZclZVVaK953hitc164wueaMKKGvN67JvynX2-lh3H8PPCdIoBpuWBkkPYUqCNQ3FvlJWPoyiBxWtK9oh2hxRFUNKEYzYRzvIOCMkFo_FTtx7LBaPBWW4KCaen96Y-gH037R7UxF4dQJkUtKZKL2y6R9X84q2qHadvTxyRgYhtxGZ2xt8qUaRXVXwRePFkcARgIOFKJKy4NEGG0GNQgf7sNp3_5VQznocN_cDZki7MEWP5gkmEuaIm2Vml5FlxdIq_M1vJOHqww</recordid><startdate>20120503</startdate><enddate>20120503</enddate><creator>Bouchez, Gaëlle</creator><creator>Millan, Mark J</creator><creator>Rivet, Jean-Michel</creator><creator>Billiras, Rodolphe</creator><creator>Boulanger, Raphaël</creator><creator>Gobert, Alain</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QG</scope><scope>7TK</scope></search><sort><creationdate>20120503</creationdate><title>Quantification of extracellular levels of corticosterone in the basolateral amygdaloid complex of freely-moving rats: A dialysis study of circadian variation and stress-induced modulation</title><author>Bouchez, Gaëlle ; Millan, Mark J ; Rivet, Jean-Michel ; Billiras, Rodolphe ; Boulanger, Raphaël ; Gobert, Alain</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c510t-38225e87f58dff69cc14b7f758ec73381434c8b9f8c85519fd386c2e35d853b63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Amygdala</topic><topic>Amygdala - drug effects</topic><topic>Amygdala - metabolism</topic><topic>Animals</topic><topic>antagonists</topic><topic>Biological and medical sciences</topic><topic>Carbolines - pharmacology</topic><topic>Chronobiology</topic><topic>Circadian Rhythm - physiology</topic><topic>cognition</topic><topic>Corticosterone</topic><topic>Corticosterone - metabolism</topic><topic>Corticosterone - pharmacology</topic><topic>corticotropin</topic><topic>CRF</topic><topic>diurnal variation</topic><topic>dopamine</topic><topic>Dopamine - metabolism</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>gamma-Aminobutyric Acid - metabolism</topic><topic>immunoassays</topic><topic>Microdialysis</topic><topic>monoamines</topic><topic>Neurology</topic><topic>norepinephrine</topic><topic>Norepinephrine - metabolism</topic><topic>Rats</topic><topic>receptors</topic><topic>recruitment</topic><topic>serotonin</topic><topic>Serotonin - metabolism</topic><topic>Stress</topic><topic>Stress, Psychological - metabolism</topic><topic>Vasopressin</topic><topic>Vertebrates: anatomy and physiology, studies on body, several organs or systems</topic><topic>yohimbine</topic><topic>Yohimbine - pharmacology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bouchez, Gaëlle</creatorcontrib><creatorcontrib>Millan, Mark J</creatorcontrib><creatorcontrib>Rivet, Jean-Michel</creatorcontrib><creatorcontrib>Billiras, Rodolphe</creatorcontrib><creatorcontrib>Boulanger, Raphaël</creatorcontrib><creatorcontrib>Gobert, Alain</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Animal Behavior Abstracts</collection><collection>Neurosciences Abstracts</collection><jtitle>Brain research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bouchez, Gaëlle</au><au>Millan, Mark J</au><au>Rivet, Jean-Michel</au><au>Billiras, Rodolphe</au><au>Boulanger, Raphaël</au><au>Gobert, Alain</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantification of extracellular levels of corticosterone in the basolateral amygdaloid complex of freely-moving rats: A dialysis study of circadian variation and stress-induced modulation</atitle><jtitle>Brain research</jtitle><addtitle>Brain Res</addtitle><date>2012-05-03</date><risdate>2012</risdate><volume>1452</volume><spage>47</spage><epage>60</epage><pages>47-60</pages><issn>0006-8993</issn><eissn>1872-6240</eissn><coden>BRREAP</coden><abstract>Abstract Corticosterone influences emotion and cognition via actions in a diversity of corticolimbic structures, including the amygdala. Since extracellular levels of corticosterone in brain have rarely been studied, we characterized a specific and sensitive enzymatic immunoassay for microdialysis quantification of corticosterone in the basolateral amygdaloid complex of freely-moving rats. Corticosterone levels showed marked diurnal variation with an evening (dark phase) peak and stable, low levels during the day (light phase). The “anxiogenic agents”, FG7142 (20 mg/kg) and yohimbine (10 mg/kg), and an environmental stressor, 15-min forced-swim, induced marked and sustained (1–3 h) increases in dialysis levels of corticosterone in basolateral amygdaloid complex. They likewise increased dialysis levels of dopamine and noradrenaline, but not serotonin and GABA. As compared to basal corticosterone levels of ~ 200–300 pg/ml, the elevation provoked by forced-swim was ca. 20-fold and this increase was abolished by adrenalectomy. Interestingly, stress-induced rises of corticosterone levels in basolateral amygdaloid complex were abrogated by combined but not separate administration of the corticotrophin releasing factor1 (CRF1 ) receptor antagonist, CP154,526, and the vasopressin1b (V1b ) receptor antagonist, SSR149,415. Underpinning their specificity, they did not block forced-swim-induced elevations in dopamine and noradrenaline. In conclusion, extracellular levels of corticosterone in the basolateral amygdaloid complex display marked diurnal variation. Further, they are markedly elevated by acute stressors, the effects of which are mediated (in contrast to concomitant elevations in levels of monoamines) by co-joint recruitment of CRF1 and V1b receptors.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>22464880</pmid><doi>10.1016/j.brainres.2012.01.010</doi><tpages>14</tpages></addata></record> |
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subjects | Amygdala Amygdala - drug effects Amygdala - metabolism Animals antagonists Biological and medical sciences Carbolines - pharmacology Chronobiology Circadian Rhythm - physiology cognition Corticosterone Corticosterone - metabolism Corticosterone - pharmacology corticotropin CRF diurnal variation dopamine Dopamine - metabolism Fundamental and applied biological sciences. Psychology gamma-Aminobutyric Acid - metabolism immunoassays Microdialysis monoamines Neurology norepinephrine Norepinephrine - metabolism Rats receptors recruitment serotonin Serotonin - metabolism Stress Stress, Psychological - metabolism Vasopressin Vertebrates: anatomy and physiology, studies on body, several organs or systems yohimbine Yohimbine - pharmacology |
title | Quantification of extracellular levels of corticosterone in the basolateral amygdaloid complex of freely-moving rats: A dialysis study of circadian variation and stress-induced modulation |
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