Abstract:
:Due to its high sensitivity, compact size and low cost ion mobility spectrometry (IMS) has the potential to become a point-of-care breath analyzer. Therefore, we developed a prototype of a compact, closed gas loop IMS with gas chromatographic (GC) pre-separation and high resolving power of R = 90. In this study, we evaluated the performance of this GC-IMS under clinical conditions in a COPD study to find correlations between VOCs (10 ppbv to 1 ppmv) and COPD. Furthermore, in order to investigate possible correlations between ultra-low concentrated breath VOCs (0.1 pptv to 1 ppbv) and COPD, a modified mass spectrometer (MS) with atmospheric pressure chemical ionization (APCI) and GC pre-separation (GC-APCI-MS) was used. The GC-IMS has been used in 58 subjects (21 smokers with moderate COPD, 12 ex-smokers with COPD, 16 healthy smokers and 9 non-smokers). GC-APCI-MS data were available for 94 subjects (21 smokers with moderate COPD, 25 ex-smokers with COPD, 25 healthy smokers and 23 non-smokers). For 44 subjects, a comparison between GC-IMS and GC-APCI-MS data could be performed. Due to service intervals, subject availability and corrupt data, patient numbers were different for GC-APCI-MS and GC-IMS measurements. Using GC-IMS, three VOCs have been found showing a significant difference between healthy controls and patients with COPD. In the GC-APCI-MS data, we only observed one distinctive VOC, which has been identified as 2-pentanone. This proof-of-principle study shows the potential of our high-resolution GC-IMS in the clinical environment. Due to different linear dynamic response ranges, the data of GC-IMS and GC-APCI-MS were only comparable to a limited extent.
journal_name
J Breath Resjournal_title
Journal of breath researchauthors
Allers M,Langejuergen J,Gaida A,Holz O,Schuchardt S,Hohlfeld JM,Zimmermann Sdoi
10.1088/1752-7155/10/2/026004subject
Has Abstractpub_date
2016-04-08 00:00:00pages
026004issue
2eissn
1752-7155issn
1752-7163journal_volume
10pub_type
杂志文章abstract::Poor compliance to prescribed medication regimens in clinical trials continues to be a major obstacle to drug development success and cost reduction, and there is no gold standard technology that is cheap and effective to reliably measure drug compliance. This paper presents a new drug compliance scheme based on the d...
journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/1/2/026006
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journal_title:Journal of breath research
pub_type: 杂志文章,meta分析,评审
doi:10.1088/1752-7163/aa5cc2
更新日期:2017-02-17 00:00:00
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doi:10.1088/1752-7155/9/2/027001
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pub_type: 杂志文章
doi:10.1088/1752-7163/aaba84
更新日期:2018-05-14 00:00:00
abstract::Despite growing interest and considerable progress in breath research over the last decade, standardized practices for the sampling and analysis of breath gas volatiles remain elusive. The primary reasons for this are (a) the rich chemical diversity of exhaled breath that covers an extensive range of volatile organic ...
journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/8/3/037101
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/10/4/046014
更新日期:2016-11-30 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章,评审
doi:10.1088/1752-7155/6/2/027103
更新日期:2012-06-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/6/3/036005
更新日期:2012-09-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/10/4/046008
更新日期:2016-10-12 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/2/3/037027
更新日期:2008-09-01 00:00:00
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journal_title:Journal of breath research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1088/1752-7155/5/4/046009
更新日期:2011-12-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/5/2/027101
更新日期:2011-06-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/8/4/046002
更新日期:2014-09-18 00:00:00
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pub_type: 杂志文章,多中心研究
doi:10.1088/1752-7155/7/2/026008
更新日期:2013-06-01 00:00:00
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journal_title:Journal of breath research
pub_type: 历史文章,杂志文章,评审
doi:10.1088/1752-7155/7/3/037109
更新日期:2013-09-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7163/aabdaf
更新日期:2018-05-14 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/7/4/046002
更新日期:2013-12-01 00:00:00
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pub_type: 杂志文章
doi:10.1088/1752-7163/abc054
更新日期:2020-11-05 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/9/4/047109
更新日期:2015-12-14 00:00:00
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pub_type: 杂志文章
doi:10.1088/1752-7155/4/1/017105
更新日期:2010-03-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7163/aa8efe
更新日期:2017-12-06 00:00:00
abstract::Breath analysis techniques offer a potential revolution in health care diagnostics, especially if these techniques can be brought into standard use in the clinic and at home. The advent of microsensors combined with smart sensor system technology enables a new generation of sensor systems with significantly enhanced c...
journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/5/3/037111
更新日期:2011-09-01 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7155/2/3/037009
更新日期:2008-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1088/1752-7155/9/3/031001
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pub_type: 杂志文章
doi:10.1088/1752-7155/10/3/036006
更新日期:2016-07-13 00:00:00
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journal_title:Journal of breath research
pub_type: 杂志文章
doi:10.1088/1752-7163/aa7957
更新日期:2017-09-13 00:00:00
abstract::Profiling the body chemistry by means of volatile organic compounds (VOCs) in the breath opens exciting new avenues in medical diagnostics. Gas sensors could provide ideal platforms for realizing portable, hand-held breath testing devices in the near future. This review summarizes the latest developments and applicati...
journal_title:Journal of breath research
pub_type: 杂志文章,评审
doi:10.1088/1752-7155/8/2/027103
更新日期:2014-06-01 00:00:00