A Muttray1, D Jung, L Klimek, C Kreiner. 1. Institut für Arbeits-, Sozial- und Umweltmedizin der Johannes Gutenberg-Universität Mainz, Germany.
Abstract
OBJECTIVES: To investigate the effects of an acute exposure to 200 ppm methyl ethyl ketone on the nasal mucosa of healthy volunteers. METHODS: Nineteen healthy non-smoking men were exposed to 200 ppm methyl ethyl ketone and to a sham exposure in an exposure chamber, using a cross-over design. Mucociliary transport time was determined with the saccharine test. Interleukin (IL)-1beta, IL-6, IL-8, and tumor necrosis factor-alpha (TNFalpha) were measured in nasal secretions. Subjective symptoms were assessed by questionnaire. RESULTS: Mucociliary transport time was significantly higher (660 vs. 600 s (medians), P = 0.01) after solvent exposure. Concentrations of IL-1beta and IL-8 were insignificantly elevated after exposure (IL-1beta: 83.8 pg/ml vs. 48.1 pg/ml, medians, P = 0.11; IL-8: 14471 pg/ml vs. 11080 pg/ml, P = 0.12), whereas those of IL-6 and TNFalpha remained unchanged. Subjects did not feel any irritation of nasal mucosa. CONCLUSION: Concentrations of organic solvents not exceeding their MAK values can cause subclinical rhinitis. The secretion of proinflammatory cytokines and impairment of mucociliary transport can explain the development of clinical rhinitis in highly exposed subjects.
OBJECTIVES: To investigate the effects of an acute exposure to 200 ppm methyl ethyl ketone on the nasal mucosa of healthy volunteers. METHODS: Nineteen healthy non-smoking men were exposed to 200 ppm methyl ethyl ketone and to a sham exposure in an exposure chamber, using a cross-over design. Mucociliary transport time was determined with the saccharine test. Interleukin (IL)-1beta, IL-6, IL-8, and tumor necrosis factor-alpha (TNFalpha) were measured in nasal secretions. Subjective symptoms were assessed by questionnaire. RESULTS: Mucociliary transport time was significantly higher (660 vs. 600 s (medians), P = 0.01) after solvent exposure. Concentrations of IL-1beta and IL-8 were insignificantly elevated after exposure (IL-1beta: 83.8 pg/ml vs. 48.1 pg/ml, medians, P = 0.11; IL-8: 14471 pg/ml vs. 11080 pg/ml, P = 0.12), whereas those of IL-6 and TNFalpha remained unchanged. Subjects did not feel any irritation of nasal mucosa. CONCLUSION: Concentrations of organic solvents not exceeding their MAK values can cause subclinical rhinitis. The secretion of proinflammatory cytokines and impairment of mucociliary transport can explain the development of clinical rhinitis in highly exposed subjects.
Authors: A Muttray; J Gosepath; J Brieger; A Faldum; A Pribisz; O Mayer-Popken; D Jung; B Rossbach; W Mann; S Letzel Journal: Int Arch Occup Environ Health Date: 2008-08-21 Impact factor: 3.015
Authors: A Muttray; J Gosepath; J Brieger; A Faldum; C Zagar; O Mayer-Popken; D Jung; B Roßbach; W Mann; S Letzel Journal: Int Arch Occup Environ Health Date: 2015-02-14 Impact factor: 3.015
Authors: Thomas Brüning; Rüdiger Bartsch; Hermann Maximillian Bolt; Herbert Desel; Hans Drexler; Ursula Gundert-Remy; Andrea Hartwig; Rudolf Jäckh; Edgar Leibold; Dirk Pallapies; Albert W Rettenmeier; Gerhard Schlüter; Gisela Stropp; Kirsten Sucker; Gerhard Triebig; Götz Westphal; Christoph van Thriel Journal: Arch Toxicol Date: 2014-09-03 Impact factor: 5.153