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Home SCIENCE NEWS Social & Behavioral Science

DOD Awards $297,831 to study effects of toxic pollutants on airway pathology

April 15, 2022
in Social & Behavioral Science
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The Department of Defense awarded $297,831 to Kartik Balachandran, associate professor of biomedical engineering at the U of A, to study the effects of particulate matter pollution on the nasal airway and lung interface.

Kartik Balachandran

Credit: University of Arkansas, University Relations

The Department of Defense awarded $297,831 to Kartik Balachandran, associate professor of biomedical engineering at the U of A, to study the effects of particulate matter pollution on the nasal airway and lung interface.

Balachandran will create the first in vitro benchtop system to incorporate both the upper and lower respiratory systems into a single model.

Over the two-year term of the grant, Balachandran will create and validate a novel airway-lung-on-a-chip, or AirLOC, system engineered from human cells. This will incorporate a multilayered, cell culture platform that mimics both normal and asthmatic nasal and lung epithelia – the tissue that covers all organs and body surfaces. These 3-D chips can replicate several aspects of human physiology, and, according to Balachandran, “can recreate complex organ functions, tissue-barrier properties, parenchymal tissue function and multi-organ interactions.”

AirLOCs will be exposed to particulate matter of different sizes for differing durations. Both air flow and blood flow will be simulated as well as the connection from the nasal airway compartment to the bronchial airway compartment.

The association between respiratory illness and exposure to particulate matter is well documented. Particulate matter can take the form of anything from dust storms to vehicular exhaust. Larger particles tend to lodge in the upper respiratory system and lungs while smaller particles can penetrate deeper into the lung’s alveoli sacs. The accumulation of particulate matter can lead to increased risk of chronic obstructive pulmonary disease, as well as asthma, allergic rhinitis and other respiratory infections.

“We are very excited to receive this grant from the DOD,” Balachandran said. “We will study the pathological effects of particulate matter in this project. In the future, we hope that this AirLOC model can be used to study other diseases and problems that affect the human upper and lower respiratory systems.”

Organs on a chip are something of specialty for Balachandran, who is also developing a chip that simulates the aortic valve tissue to study the impact of SARS-COV-2 on heart pathology.



Tags: airwayawardsDODeffectspathologypollutantsstudyToxic
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