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Andre Levchenko, Sc.D

AIMBE College of Fellows Class of 2013
For exceptional breadth and depth of scholarship in the emergent field of Systems Biology.

Study discovers the mechanism of bronchial spasms

Via Yale University | April 2, 2019

A new study by researchers at Yale and Johns Hopkins University has discovered how asthmatic bronchial spasms — muscle contractions in the airway that cause difficulty breathing in asthma patients— occur by creating a microdevice that mimics the behavior of the human respiratory airways.

Led by Andre Levchenko, professor of biomedical engineering, and Johns Hopkins postdoctoral fellow Onur Kilic, the team investigated the mechanism by which the smooth muscle surrounding bronchial airways — the network of tubes that deliver oxygen to the lungs — suddenly contract and cause bronchial spasms. During bronchial spasms, sudden contractions of the smooth muscles result in decreased airflow, not only in asthma patients but also in healthy people… Continue reading.

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Researchers discover how fatal biofilms form

Via Yale University | October 5, 2018

By severely curtailing the effects of antibiotics, the formation of organized communities of bacterial cells known as biofilms can be deadly during surgeries and in urinary tract infections. Yale researchers have just come a lot closer to understanding how these biofilms develop, and potentially how to stop them.

Biofilms form when bacterial cells gather and develop structures that bond them in a gooey substance. This glue can protect the cells from the outside world and allow them to form complex quasi-organisms. Biofilms can be found almost everywhere, including unwashed shower stalls or the surfaces of lakes. Because the protective shell can keep out potential treatments, biofilms are at their most dangerous when they invade human cells or form on sutures and catheters used in surgeries. In American hospitals alone, thousands of deaths are attributed to biofilm-related surgical site infections and urinary tract infections… Continue reading.

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