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Symptoms from masked acrolein exposure suggest altered trigeminal reactivity in chemical intolerance
Department of Psychology, Umeå University, Umeå, Sweden.
Department of Psychology, Umeå University, Umeå, Sweden.
2017 (English)In: Neurotoxicology, ISSN 0161-813X, E-ISSN 1872-9711, Vol. 60, 92-98 p.Article in journal (Refereed) Published
Abstract [en]

Background Chemical intolerance (CI) is a widespread occupational and public health problem characterized by symptoms that reportedly result from low-levels of chemical exposure. The mechanisms behind CI are unknown, however modifications of the chemical senses (rather than toxic processes) have been suggested as key components. The aim of this study was to investigate whether individuals with self-reported CI report more sensory irritation during masked acrolein exposure compared to controls without CI. Methods Individuals with CI (n = 18) and controls without CI (n = 19) were exposed in an exposure chamber. Each participant took part in two exposure conditions – one with heptane (the masking compound), and one with heptane and acrolein at a dose below previously reported sensory irritation thresholds. The exposures lasted for 60 min. Symptoms and confidence ratings were measured continuously throughout the exposure as were measurements of electrodermal activity and self-reported tear-film break-up time. Participants were blind to exposure condition. Results Individuals with CI, compared with controls reported greater sensory irritation in the eyes, nose and throat when exposed to acrolein masked with heptane. There was no difference during exposure to heptane. Conclusions Masked exposure to acrolein at a concentration below the previously reported detection threshold is perceived as more irritating by individuals with CI compared with controls. The results indicate that there is altered trigeminal reactivity in those with CI compared to controls.

Place, publisher, year, edition, pages
2017. Vol. 60, 92-98 p.
Keyword [en]
Human exposure; Acrolein; Chemical intolerance; TRPA1; Trigeminal reactivity
National Category
Psychology (excluding Applied Psychology)
Identifiers
URN: urn:nbn:se:hig:diva-24073DOI: 10.1016/j.neuro.2017.03.007ISI: 000403133600010PubMedID: 28359837Scopus ID: 2-s2.0-85016584006OAI: oai:DiVA.org:hig-24073DiVA: diva2:1106758
Funder
Swedish Research Council Formas, 2010-1401
Available from: 2017-06-08 Created: 2017-06-08 Last updated: 2017-07-05Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf