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Updated: Jul 18, 2026
06:27
Fast and Accurate Exhaled Breath Ammonia Measurement
Published on: June 11, 2014
Why inhaling salt water changes what we exhale
Wiwik Watanabe1, Matthew Thomas, Robert Clarke
1Pulmatrix Inc., 12 Emily Street, Cambridge, MA 02139, USA.
Journal of Colloid and Interface Science
|December 13, 2006
Summary
Inhaling salt water stabilizes airway fluids, reducing exhaled biomaterial. This discovery offers a novel method for controlling airborne infectious disease spread.
Area of Science:
- Pulmonary Medicine
- Biophysics
- Infectious Disease Control
Background:
- Airborne infectious diseases spread via exhaled biomaterial.
- The airway lining fluid (ALF) plays a role in aerosol generation.
- Understanding ALF's physical properties is crucial for disease control.
Purpose of the Study:
- To investigate the effect of inhaled salt water on exhaled biomaterial.
- To elucidate the mechanism behind this phenomenon.
- To assess its potential for controlling airborne infectious disease transmission.
Main Methods:
- Inhaled salt water solutions were administered to humans and animals.
- Exhaled biomaterial and ALF properties were analyzed.
- In vivo studies in anesthetized bull calves confirmed the effects and reversibility.
Main Results:
- Inhaling salt water significantly reduced subsequently exhaled biomaterial.
- This effect is attributed to reversible stabilization of the airway lining fluid (ALF)/air interface.
- Cations and surface viscoelasticity of ALF were identified as key factors in reducing droplet disintegration.
Conclusions:
- Inhaled salt water stabilizes the ALF/air interface, reducing aerosolization of biomaterial.
- This mechanism offers a novel, reversible strategy for controlling airborne infectious disease spread.
- Further research into ALF's physical properties can yield new therapeutic interventions.
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