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Related Experiment Videos

Exhaled pentane levels in acute asthma

C O Olopade1, M Zakkar, W I Swedler

  • 1Department of Medicine, University of Illinois at Chicago, 60612-7323, USA.

Chest
|April 1, 1997
PubMed
Summary
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Exhaled pentane levels are elevated during acute asthma and decrease as the condition resolves. This suggests pentane may serve as a biomarker for asthma inflammation.

Area of Science:

  • Biochemistry
  • Pulmonology
  • Biomarker Discovery

Background:

  • Exhaled pentane, a lipid peroxidation product, is a potential noninvasive marker for inflammation.
  • Increased reactive oxygen species in asthma contribute to airway dysfunction.

Purpose of the Study:

  • To investigate elevated exhaled pentane levels in acute asthma.
  • To determine if pentane levels decrease after acute asthma subsides.

Main Methods:

  • Collected exhaled air from 12 acute asthma patients, 11 stable asthma patients, and 17 healthy controls.
  • Analyzed pentane levels using gas chromatography.
  • Measured peak expiratory flow rates.

Main Results:

  • Exhaled pentane was significantly higher in acute asthma (8.4 nmol/L) compared to resolved asthma (3.5 nmol/L).

Related Experiment Videos

  • Pentane levels in stable asthma patients were similar to healthy controls.
  • Peak expiratory flow rates improved significantly as asthma subsided.

    • Conclusions:

    • Exhaled pentane levels are elevated during acute asthma episodes.
    • Pentane levels decrease significantly once acute asthma resolves, indicating its potential as an inflammation marker.