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{"title"=>"Carbon dioxide inhalation induces dose-dependent and age-related negative affectivity", "type"=>"journal", "authors"=>[{"first_name"=>"Eric J.", "last_name"=>"Griez", "scopus_author_id"=>"7005582120"}, {"first_name"=>"Alessandro", "last_name"=>"Colasanti", "scopus_author_id"=>"55894880600"}, {"first_name"=>"Rob", "last_name"=>"van Diest", "scopus_author_id"=>"6701734587"}, {"first_name"=>"Ewa", "last_name"=>"Salamon", "scopus_author_id"=>"23991595300"}, {"first_name"=>"Koen", "last_name"=>"Schruers", "scopus_author_id"=>"7004118960"}], "year"=>2007, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-41149151455", "doi"=>"10.1371/journal.pone.0000987", "sgr"=>"41149151455", "pmid"=>"17912364", "issn"=>"19326203", "pui"=>"351472366"}, "id"=>"d81bba67-ebe2-35c4-88a7-182148ff1dca", "abstract"=>"BACKGROUND: Carbon dioxide inhalation is known to induce an emotion similar to spontaneous panic in Panic Disorder patients. The affective response to carbon dioxide in healthy subjects was not clearly characterized yet.\\n\\nMETHODOLOGY/PRINCIPAL FINDINGS: Sixty-four healthy subjects underwent a double inhalation of four mixtures containing respectively 0, 9, 17.5 and 35% CO(2) in compressed air, following a double blind, cross-over, randomized design. Affective responses were assessed according to DSM IV criteria for panic, using an Electronic Visual Analogue Scale and the Panic Symptom List. It was demonstrated that carbon dioxide challenges induced a dose dependent negative affect (p<0.0001). This affect was semantically identical to the DSM IV definition of panic. Older individuals were subjectively less sensitive to Carbon Dioxide (p<0.05).\\n\\nCONCLUSIONS/SIGNIFICANCE: CO(2) induced affectivity may lay on a continuum with pathological panic attacks. Consistent with earlier suggestions that panic is a false biological alarm, the affective response to CO(2) may be part of a protective system triggered by suffocation and acute metabolic distress.", "link"=>"http://www.mendeley.com/research/carbon-dioxide-inhalation-induces-dosedependent-agerelated-negative-affectivity", "reader_count"=>38, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>3, "Researcher"=>7, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>11, "Student > Postgraduate"=>1, "Student > Master"=>2, "Student > Bachelor"=>2, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>2, "Professor"=>3, "Other"=>2}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>3, "Researcher"=>7, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>11, "Student > Postgraduate"=>1, "Student > Master"=>2, "Student > Bachelor"=>2, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>2, "Professor"=>3, "Other"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Engineering"=>1, "Environmental Science"=>2, "Biochemistry, Genetics and Molecular Biology"=>1, "Medicine and Dentistry"=>10, "Agricultural and Biological Sciences"=>3, "Neuroscience"=>2, "Veterinary Science and Veterinary Medicine"=>1, "Psychology"=>11, "Social Sciences"=>2, "Computer Science"=>1, "Immunology and Microbiology"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>10}, "Neuroscience"=>{"Neuroscience"=>2}, "Social Sciences"=>{"Social Sciences"=>2}, "Psychology"=>{"Psychology"=>11}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>3}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>3}, "Environmental Science"=>{"Environmental Science"=>2}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>1}}, "reader_count_by_country"=>{"Netherlands"=>2, "China"=>1, "Egypt"=>1, "Germany"=>1}, "group_count"=>0}

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• http://doi.org/10.1177/0269881114527363
• http://doi.org/10.1177/0269881108093844
• http://doi.org/10.1007/s00213-011-2177-8
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• http://doi.org/10.1080/10615806.2019.1570803
• http://doi.org/10.1016/j.biopsycho.2013.06.004

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• {"type"=>"COMMENT", "annotationUri"=>"info:doi/10.1371/annotation/7f68bd07-97bc-4003-b12e-4b1717b8bc5c", "title"=>"Implications for treatment", "body"=>"What are the implications for treatment of PD. Typically, slow deep breaths are recommended to reduce panic symptoms while waiting for the panic to pass. Since CO2 may be the trigger, presumably deep hyperventilation would reduce panic symptoms by throwing off excess CO2, thus removing the trigger? So, breathing in a paper bag would be contraindicated, since CO2 would then be recycled and likely elevate blood levels.", "isRemoved"=>false, "created"=>"2007-10-10T05:13:00Z", "lastModified"=>"2007-10-10T05:13:00Z", "creator"=>{"userId"=>"123869"}, "highlightedText"=>"", "competingInterestStatement"=>{"creatorWasPrompted"=>false, "hasCompetingInterests"=>false}, "parentArticle"=>{"doi"=>"info:doi/10.1371/journal.pone.0000987", "state"=>"published", "journals"=>{"PLoSONE"=>{"journalKey"=>"PLoSONE", "eIssn"=>"1932-6203", "title"=>"PLOS ONE"}}}, "replyTreeSize"=>1, "mostRecentActivity"=>"2007-10-16T09:20:35Z", "replies"=>[{"type"=>"REPLY", "parentID"=>11637, "annotationUri"=>"info:doi/10.1371/reply/b8ed4637-ba8b-41c4-a383-82403e1375cb", "title"=>"RE: Implications for treatment", "body"=>"This is a very good observation. However, we must keep in mind that the CO2 challenge is a model of panic though to trigger symptoms by momentarily activating a system that monitors acute acidosis (such as that produced by suffocation). Therefore the panic reaction to this maneuver is also very brief (seconds rather than minutes) when compared to natural spontaneous panic attacks. During provocation procedures using CO2 high doses are necessary to provoke a reaction. Such is the case of either a couple of breaths of 35% CO2 or a continuous inhalation of lower concentrations for several minutes. Due to the nature of CO2 and the efficiency of the bicarbonate buffer system, pH homeostasis is rapidly restored once these procedures are terminated. In this scope, the CO2 increases produced by breathing in a paper bag for a few minutes are usually too small to exacerbate panic. In any case, rebreathing in a paper bag to treat the respiratory alkalosis during acute anxiety may not advisable for a number of reasons. In prolonged rebreathing the increases of CO2 can potentially be enough to exacerbate panic symptoms and moreover dangerously lead to hypoxemia. Additionally, one study suggests that paper bag re breathing has no specific effect on the alleviation of symptoms produced by hyperventilation. Coaching patients to take slow and shallow breaths may give the same results with less potential adverse effects. ", "isRemoved"=>false, "created"=>"2007-10-16T09:20:35Z", "lastModified"=>"2007-10-16T09:20:35Z", "creator"=>{"userId"=>"105419"}, "highlightedText"=>"", "competingInterestStatement"=>{"creatorWasPrompted"=>false, "hasCompetingInterests"=>false}, "parentArticle"=>{"doi"=>"info:doi/10.1371/journal.pone.0000987", "state"=>"published", "journals"=>{"PLoSONE"=>{"journalKey"=>"PLoSONE", "eIssn"=>"1932-6203", "title"=>"PLOS ONE"}}}, "replyTreeSize"=>0, "mostRecentActivity"=>"2007-10-16T09:20:35Z", "replies"=>[]}]}

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• {"id"=>"220784202243772417", "text"=>"@translativ &gt; du kan se mer om co2 och panik/ångest här: http://t.co/tlUXAfAD \n\nHoppas det var vettigt svar?", "created_at"=>"2012-07-05T07:40:30Z", "user"=>"FranBaren", "user_name"=>"Björn W", "user_profile_image"=>"http://a0.twimg.com/profile_images/1584561215/portr_tt_med__l_normal.jpg"}
• {"id"=>"220792917726474240", "text"=>"RT @FranBaren: @translativ &gt; du kan se mer om co2 och panik/ångest här: http://t.co/tlUXAfAD \n\nHoppas det var vettigt svar?", "created_at"=>"2012-07-05T08:15:08Z", "user"=>"translativ", "user_name"=>"anjaa", "user_profile_image"=>"http://a0.twimg.com/profile_images/2368280976/4U7M9DbI_normal"}

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Figshare

• {"files"=>["https://ndownloader.figshare.com/files/944784"], "description"=>"<p>a) PSL: air vs 9% p = 0.76; air vs 17.5% and vs 35% p ≤ 0.0001; 9% vs 17.5% and vs 35% p ≤ 0.0001; 17.5% vs 35% p ≤ 0.0001. b) Younger versus older subjects: p = 0.217</p>", "links"=>[], "tags"=>["psl", "symptoms"], "article_id"=>615168, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987.g003", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Intensity_of_PSL_panic_symptoms_in_four_different_CO_2_conditions_/615168", "title"=>"Intensity of PSL panic symptoms in four different CO₂conditions.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 01:26:08"}
• {"files"=>["https://ndownloader.figshare.com/files/944924"], "description"=>"<p>Aggregate score of cognitive symptoms induced by four different CO₂conditions in healthy subjects (“derealization-depersonalization” score+ “fear of loosing control-going crazy” score).</p>", "links"=>[], "tags"=>["symptoms", "induced", "subjects", "loosing", "control-going"], "article_id"=>615298, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987.g005", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Aggregate_score_of_cognitive_symptoms_induced_by_four_different_CO_2_conditions_in_healthy_subjects_8220_derealization_depersonalization_8221_score_8220_fear_of_loosing_control_going_crazy_8221_score_/615298", "title"=>"Aggregate score of cognitive symptoms induced by four different CO₂conditions in healthy subjects (“derealization-depersonalization” score+ “fear of loosing control-going crazy” score).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 01:28:18"}
• {"files"=>["https://ndownloader.figshare.com/files/944735"], "description"=>"<p>a) eVAAS AUC score: air vs 9% p = 0.91; air vs 17.5% and vs 35% p ≤ 0.005; 9% vs 17.5% and vs 35% p ≤ 0.001; 17.5% vs 35% p≤0.0001. b) Time course of Fear/Discomfort in a single subject after the double inhalation of 0%, 9%, 17.5%, 35% CO₂ respectively.</p>", "links"=>[], "tags"=>["neuroscience/behavioral neuroscience", "mental health/anxiety disorders"], "article_id"=>615124, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987.g002", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Area_Under_the_Curve_on_the_Fear_Discomfort_scale_in_four_different_CO_2_conditions_/615124", "title"=>"Area Under the Curve on the Fear/Discomfort scale in four different CO₂conditions.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 01:25:24"}
• {"files"=>["https://ndownloader.figshare.com/files/464689"], "description"=>"<div><h3>Background</h3><p>Carbon dioxide inhalation is known to induce an emotion similar to spontaneous panic in Panic Disorder patients. The affective response to carbon dioxide in healthy subjects was not clearly characterized yet.</p><h3>Methodology/Principal Findings</h3><p>Sixty-four healthy subjects underwent a double inhalation of four mixtures containing respectively 0, 9, 17.5 and 35% CO₂ in compressed air, following a double blind, cross-over, randomized design. Affective responses were assessed according to DSM IV criteria for panic, using an Electronic Visual Analogue Scale and the Panic Symptom List. It was demonstrated that carbon dioxide challenges induced a dose dependent negative affect (p<0.0001). This affect was semantically identical to the DSM IV definition of panic. Older individuals were subjectively less sensitive to Carbon Dioxide (p<0.05).</p><h3>Conclusions/Significance</h3><p>CO₂ induced affectivity may lay on a continuum with pathological panic attacks. Consistent with earlier suggestions that panic is a false biological alarm, the affective response to CO₂ may be part of a protective system triggered by suffocation and acute metabolic distress.</p></div>", "links"=>[], "tags"=>["carbon", "dioxide", "inhalation", "induces", "dose-dependent", "age-related", "affectivity"], "article_id"=>151591, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987", "stats"=>{"downloads"=>1, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Carbon_Dioxide_Inhalation_Induces_Dose_Dependent_and_Age_Related_Negative_Affectivity/151591", "title"=>"Carbon Dioxide Inhalation Induces Dose-Dependent and Age-Related Negative Affectivity", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 00:26:31"}
• {"files"=>["https://ndownloader.figshare.com/files/944683"], "description"=>"<p>a) eVAAS: air vs 9% p = 0.44; air vs 17.5% and vs 35% p ≤ 0.001; 9% vs 17.5% and vs 35% p ≤ 0.0001; 17.5% vs 35% p≤0.0001. b) Younger versus older subjects: p<0.05</p>", "links"=>[], "tags"=>["scores"], "article_id"=>615066, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987.g001", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Peak_scores_on_the_Fear_Discomfort_scale_in_four_different_CO_2_conditions_/615066", "title"=>"Peak scores on the Fear/Discomfort scale in four different CO₂conditions.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 01:24:26"}
• {"files"=>["https://ndownloader.figshare.com/files/944858"], "description"=>"<p>DSM panic symptoms intensity in healthy subjects taking four different doses of CO₂.</p>", "links"=>[], "tags"=>["symptoms", "subjects", "taking", "doses"], "article_id"=>615231, "categories"=>["Mental Health", "Neuroscience"], "users"=>["Eric J. Griez", "Alessandro Colasanti", "Rob van Diest", "Ewa Salamon", "Koen Schruers"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000987.g004", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_DSM_panic_symptoms_intensity_in_healthy_subjects_taking_four_different_doses_of_CO_2_/615231", "title"=>"DSM panic symptoms intensity in healthy subjects taking four different doses of CO₂.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2007-10-03 01:27:11"}

PMC Usage Stats | Further Information

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Relative Metric

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F1000Prime