Blood and breath profiles of volatile organic compounds in patients with end-stage renal disease

Paweł Mochalski, Julian King, Matthias Haas, Karl Unterkofler, Anton Amann, Gert Mayer

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Background: Monitoring of volatile organic compounds (VOCs) in exhaled breath shows great potential as a non-invasive method for assessing hemodialysis efficiency. In this work we aim at identifying and quantifying of a wide range of VOCs characterizing uremic breath and blood, with a particular focus on species responding to the dialysis treatment. Methods. Gas chromatography with mass spectrometric detection coupled with solid-phase microextraction as pre-concentration method. Results: A total of 60 VOCs were reliably identified and quantified in blood and breath of CKD patients. Excluding contaminants, six compounds (isoprene, dimethyl sulfide, methyl propyl sulfide, allyl methyl sulfide, thiophene and benzene) changed their blood and breath levels during the hemodialysis treatment. Conclusions: Uremic breath and blood patterns were found to be notably affected by the contaminants from the extracorporeal circuits and hospital room air. Consequently, patient exposure to a wide spectrum of volatile species (hydrocarbons, aldehydes, ketones, aromatics, heterocyclic compounds) is expected during hemodialysis. Whereas highly volatile pollutants were relatively quickly removed from blood by exhalation, more soluble ones were retained and contributed to the uremic syndrome. At least two of the species observed (cyclohexanone and 2-propenal) are uremic toxins. Perhaps other volatile substances reported within this study may be toxic and have negative impact on human body functions. Further studies are required to investigate if VOCs responding to HD treatment could be used as markers for monitoring hemodialysis efficiency.

Originalspracheenglisch
Aufsatznummer43
Seitenumfang14
FachzeitschriftBMC Nephrology
Jahrgang15
Ausgabenummer1
DOIs
PublikationsstatusVeröffentlicht - 8 Mär 2014

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Volatile Organic Compounds
Chronic Kidney Failure
Renal Dialysis
Exhalation
Acrolein
Heterocyclic Compounds
Solid Phase Microextraction
Thiophenes
Poisons
Sulfides
Hydrocarbons
Benzene
Ketones
Human Body
Aldehydes
Gas Chromatography
Dialysis
Therapeutics
Air

Schlagwörter

    ASJC Scopus subject areas

    • !!Nephrology

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    Blood and breath profiles of volatile organic compounds in patients with end-stage renal disease. / Mochalski, Paweł; King, Julian; Haas, Matthias; Unterkofler, Karl; Amann, Anton; Mayer, Gert.

    in: BMC Nephrology, Jahrgang 15, Nr. 1, 43, 08.03.2014.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Mochalski, Paweł ; King, Julian ; Haas, Matthias ; Unterkofler, Karl ; Amann, Anton ; Mayer, Gert. / Blood and breath profiles of volatile organic compounds in patients with end-stage renal disease. in: BMC Nephrology. 2014 ; Jahrgang 15, Nr. 1.
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    AU - King, Julian

    AU - Haas, Matthias

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    AU - Amann, Anton

    AU - Mayer, Gert

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    N2 - Background: Monitoring of volatile organic compounds (VOCs) in exhaled breath shows great potential as a non-invasive method for assessing hemodialysis efficiency. In this work we aim at identifying and quantifying of a wide range of VOCs characterizing uremic breath and blood, with a particular focus on species responding to the dialysis treatment. Methods. Gas chromatography with mass spectrometric detection coupled with solid-phase microextraction as pre-concentration method. Results: A total of 60 VOCs were reliably identified and quantified in blood and breath of CKD patients. Excluding contaminants, six compounds (isoprene, dimethyl sulfide, methyl propyl sulfide, allyl methyl sulfide, thiophene and benzene) changed their blood and breath levels during the hemodialysis treatment. Conclusions: Uremic breath and blood patterns were found to be notably affected by the contaminants from the extracorporeal circuits and hospital room air. Consequently, patient exposure to a wide spectrum of volatile species (hydrocarbons, aldehydes, ketones, aromatics, heterocyclic compounds) is expected during hemodialysis. Whereas highly volatile pollutants were relatively quickly removed from blood by exhalation, more soluble ones were retained and contributed to the uremic syndrome. At least two of the species observed (cyclohexanone and 2-propenal) are uremic toxins. Perhaps other volatile substances reported within this study may be toxic and have negative impact on human body functions. Further studies are required to investigate if VOCs responding to HD treatment could be used as markers for monitoring hemodialysis efficiency.

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