Chronotype and biological rhythms in bipolar disorders

IntroductionBiological rhythms play an important role in the etiology of mood disorders. Several lines of evidence established a link between circadian rhythm disruption and mood episodes. Chronotypes are the behavioral manifestations of circadian rhythms and eveningness appears to be more frequent...

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Published in:European psychiatry 2021-04, Vol.64 (S1), p.S622-S622
Main Authors: Ahmed, A. Ben Cheikh, Ouali, U., Bouslama, I., Zgueb, Y., Nacef, F.
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Biological rhythms
Bipolar disorder
Bipolar Disorders
BRIAN scale
chronotype
Circadian rhythm
E-Poster Viewing
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container_title European psychiatry
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creator Ahmed, A. Ben Cheikh
Ouali, U.
Bouslama, I.
Zgueb, Y.
Nacef, F.
description IntroductionBiological rhythms play an important role in the etiology of mood disorders. Several lines of evidence established a link between circadian rhythm disruption and mood episodes. Chronotypes are the behavioral manifestations of circadian rhythms and eveningness appears to be more frequent in bipolar disorder (BD). The influence of chronotype on mood symptoms needs yet to be clarified.Objectives-Identifying the predominant chronotype in a Tunisian sample of patients with BD -Assessing the association between chronotype and biological rhythm disruptions in the sampleMethodsFor this study, a total of 80 euthymic outpatients with bipolar disorder and 80 control subjects were recruited. Biological rhythms disruptions were assessed using the Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN). Predominant chronotype was identified using the composite scale of morningness (CSM).ResultsBRIAN scores showed greater biological rhythms disruptions in bipolar patients than the control subjects (mean scores 35.26±9.21 vs 25.84±2.68). Low CSM scores in the patients’ group indicated a predominant evening chronotype whereas an intermediate chronotype was more frequent within the control group. The correlation analysis revealed a statistically significant negative correlation between the 2 scales (r=-0.716, p
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Ben Cheikh ; Ouali, U. ; Bouslama, I. ; Zgueb, Y. ; Nacef, F.</creator><creatorcontrib>Ahmed, A. Ben Cheikh ; Ouali, U. ; Bouslama, I. ; Zgueb, Y. ; Nacef, F.</creatorcontrib><description>IntroductionBiological rhythms play an important role in the etiology of mood disorders. Several lines of evidence established a link between circadian rhythm disruption and mood episodes. Chronotypes are the behavioral manifestations of circadian rhythms and eveningness appears to be more frequent in bipolar disorder (BD). The influence of chronotype on mood symptoms needs yet to be clarified.Objectives-Identifying the predominant chronotype in a Tunisian sample of patients with BD -Assessing the association between chronotype and biological rhythm disruptions in the sampleMethodsFor this study, a total of 80 euthymic outpatients with bipolar disorder and 80 control subjects were recruited. Biological rhythms disruptions were assessed using the Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN). Predominant chronotype was identified using the composite scale of morningness (CSM).ResultsBRIAN scores showed greater biological rhythms disruptions in bipolar patients than the control subjects (mean scores 35.26±9.21 vs 25.84±2.68). Low CSM scores in the patients’ group indicated a predominant evening chronotype whereas an intermediate chronotype was more frequent within the control group. The correlation analysis revealed a statistically significant negative correlation between the 2 scales (r=-0.716, p&lt;0.001): the CSM scores decreased as the BRIAN scores increased.ConclusionsThis study indicates that eveningness is more common in BD. This chronotype is more likely to disturb biological rhythms which may increase the risk of mood symptoms and lead to a poor prognosis for BD, thus the relevance of treating rhythm alterations, especially in evening-type patients, in order to improve their quality of life and prevent mood episodes.DisclosureNo significant relationships.</description><identifier>ISSN: 0924-9338</identifier><identifier>EISSN: 1778-3585</identifier><identifier>DOI: 10.1192/j.eurpsy.2021.1653</identifier><language>eng</language><publisher>Paris: Cambridge University Press</publisher><subject>Abstract ; Biological rhythms ; Bipolar disorder ; Bipolar Disorders ; BRIAN scale ; chronotype ; Circadian rhythm ; E-Poster Viewing</subject><ispartof>European psychiatry, 2021-04, Vol.64 (S1), p.S622-S622</ispartof><rights>The Author(s), 2021. Published by Cambridge University Press on behalf of the European Psychiatric Association. This work is licensed under the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>The Author(s) 2021 2021 The Author(s)</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/2560867674/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/2560867674?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,25753,27924,27925,37012,44590,53791,53793,74998</link.rule.ids></links><search><creatorcontrib>Ahmed, A. Ben Cheikh</creatorcontrib><creatorcontrib>Ouali, U.</creatorcontrib><creatorcontrib>Bouslama, I.</creatorcontrib><creatorcontrib>Zgueb, Y.</creatorcontrib><creatorcontrib>Nacef, F.</creatorcontrib><title>Chronotype and biological rhythms in bipolar disorders</title><title>European psychiatry</title><description>IntroductionBiological rhythms play an important role in the etiology of mood disorders. Several lines of evidence established a link between circadian rhythm disruption and mood episodes. Chronotypes are the behavioral manifestations of circadian rhythms and eveningness appears to be more frequent in bipolar disorder (BD). The influence of chronotype on mood symptoms needs yet to be clarified.Objectives-Identifying the predominant chronotype in a Tunisian sample of patients with BD -Assessing the association between chronotype and biological rhythm disruptions in the sampleMethodsFor this study, a total of 80 euthymic outpatients with bipolar disorder and 80 control subjects were recruited. Biological rhythms disruptions were assessed using the Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN). Predominant chronotype was identified using the composite scale of morningness (CSM).ResultsBRIAN scores showed greater biological rhythms disruptions in bipolar patients than the control subjects (mean scores 35.26±9.21 vs 25.84±2.68). Low CSM scores in the patients’ group indicated a predominant evening chronotype whereas an intermediate chronotype was more frequent within the control group. The correlation analysis revealed a statistically significant negative correlation between the 2 scales (r=-0.716, p&lt;0.001): the CSM scores decreased as the BRIAN scores increased.ConclusionsThis study indicates that eveningness is more common in BD. This chronotype is more likely to disturb biological rhythms which may increase the risk of mood symptoms and lead to a poor prognosis for BD, thus the relevance of treating rhythm alterations, especially in evening-type patients, in order to improve their quality of life and prevent mood episodes.DisclosureNo significant relationships.</description><subject>Abstract</subject><subject>Biological rhythms</subject><subject>Bipolar disorder</subject><subject>Bipolar Disorders</subject><subject>BRIAN scale</subject><subject>chronotype</subject><subject>Circadian rhythm</subject><subject>E-Poster Viewing</subject><issn>0924-9338</issn><issn>1778-3585</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><sourceid>DOA</sourceid><recordid>eNpVkUtLw0AUhQdRsFb_gKuA69S5885GkOKjUHCj62EymWkT0kycSYT-e1NbhK4unHv47j0chO4BLwAK8tgs3Bj7tF8QTGABgtMLNAMpVU654pdohgvC8oJSdY1uUmowBomxmCGx3MbQhWHfu8x0VVbWoQ2b2po2i9v9sN2lrO4mtQ-tiVlVpxArF9MtuvKmTe7uNOfo6_Xlc_merz_eVsvndW4JFTSHyhplFDjOhOdlCdwCp9gWnHIuPS6c9ZNknSydlZQURGBwrgRaUuyZp3O0OnKrYBrdx3pn4l4HU-s_IcSNNnGobes0eGXBl8pzw9gUzjAiBWXKEWOgKqqJ9XRk9WO5c5V13RBNewY933T1Vm_Cjy6YwtNrE-DhBIjhe3Rp0E0YYzfl14QLrIQUkk0ucnTZGFKKzv9fAKwPZelGH8vSh7L0oSz6C0RYis8</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Ahmed, A. 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Ben Cheikh ; Ouali, U. ; Bouslama, I. ; Zgueb, Y. ; Nacef, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2363-1dca8a81e546f5bb15c1530c953557f09ecf5c1ce7bec73292601eeb13b30f4f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Abstract</topic><topic>Biological rhythms</topic><topic>Bipolar disorder</topic><topic>Bipolar Disorders</topic><topic>BRIAN scale</topic><topic>chronotype</topic><topic>Circadian rhythm</topic><topic>E-Poster Viewing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ahmed, A. Ben Cheikh</creatorcontrib><creatorcontrib>Ouali, U.</creatorcontrib><creatorcontrib>Bouslama, I.</creatorcontrib><creatorcontrib>Zgueb, Y.</creatorcontrib><creatorcontrib>Nacef, F.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Psychology Database (Alumni)</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>Psychology Database</collection><collection>Publicly Available Content (ProQuest)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest One Psychology</collection><collection>ProQuest Central Basic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>European psychiatry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ahmed, A. Ben Cheikh</au><au>Ouali, U.</au><au>Bouslama, I.</au><au>Zgueb, Y.</au><au>Nacef, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Chronotype and biological rhythms in bipolar disorders</atitle><jtitle>European psychiatry</jtitle><date>2021-04-01</date><risdate>2021</risdate><volume>64</volume><issue>S1</issue><spage>S622</spage><epage>S622</epage><pages>S622-S622</pages><issn>0924-9338</issn><eissn>1778-3585</eissn><abstract>IntroductionBiological rhythms play an important role in the etiology of mood disorders. Several lines of evidence established a link between circadian rhythm disruption and mood episodes. Chronotypes are the behavioral manifestations of circadian rhythms and eveningness appears to be more frequent in bipolar disorder (BD). The influence of chronotype on mood symptoms needs yet to be clarified.Objectives-Identifying the predominant chronotype in a Tunisian sample of patients with BD -Assessing the association between chronotype and biological rhythm disruptions in the sampleMethodsFor this study, a total of 80 euthymic outpatients with bipolar disorder and 80 control subjects were recruited. Biological rhythms disruptions were assessed using the Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN). Predominant chronotype was identified using the composite scale of morningness (CSM).ResultsBRIAN scores showed greater biological rhythms disruptions in bipolar patients than the control subjects (mean scores 35.26±9.21 vs 25.84±2.68). Low CSM scores in the patients’ group indicated a predominant evening chronotype whereas an intermediate chronotype was more frequent within the control group. The correlation analysis revealed a statistically significant negative correlation between the 2 scales (r=-0.716, p&lt;0.001): the CSM scores decreased as the BRIAN scores increased.ConclusionsThis study indicates that eveningness is more common in BD. This chronotype is more likely to disturb biological rhythms which may increase the risk of mood symptoms and lead to a poor prognosis for BD, thus the relevance of treating rhythm alterations, especially in evening-type patients, in order to improve their quality of life and prevent mood episodes.DisclosureNo significant relationships.</abstract><cop>Paris</cop><pub>Cambridge University Press</pub><doi>10.1192/j.eurpsy.2021.1653</doi><oa>free_for_read</oa></addata></record>
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subjects Abstract
Biological rhythms
Bipolar disorder
Bipolar Disorders
BRIAN scale
chronotype
Circadian rhythm
E-Poster Viewing
title Chronotype and biological rhythms in bipolar disorders
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