Rapid identification of pathogens responsible for necrotizing fasciitis on an integrated microfluidic system

Ju Ching Yu, Pang Hsin Hsieh, Hsing Wen Tsai, Wen Hsin Chang, Ting Hang Liu, Mel S. Lee, Kuo Ti Peng, Kuo Chin Huang*, Gwo Bin Lee

*此作品的通信作者

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2 引文 斯高帕斯(Scopus)

摘要

Necrotic fasciitis (NF) is a particularly aggressive and serious infection of the fascia that can penetrate into the musculature and internal organs, resulting in death if not treated promptly. In this work, an integrated microfluidic system composed of micropumps, microvalves, and micromixers was used to automate the detection of pathogens associated with NF. The entire molecular diagnostic process, including bacteria isolation, lysis, nucleic acid amplification and optical detection steps, was enacted on this developed system. Mannose binding lectin coated magnetic beads were first used as probes to isolate all bacteria in a sample. In this work, polymerase chain reaction assays featuring primers specific to genes from each of four NF-causing bacteria (Vibrio vulnificus, Aeromonas hydrophila, and methicillin-sensitive and resistant Staphylococcus aureus) were used to rapidly and exclusively verify the presence of the respective bacterial strains, and the limits of detection were experimentally found to be 11, 1960, 14, and 11 400 colony forming units/reaction, respectively; all values reflect improvement over ones reported in literature. This integrated microfluidic chip may then be valuable in expediting diagnosis and optimizing treatment options for those with NF; such diagnostic improvements could ideally diminish the need for amputation and even reduce the morality rate associated with this life-threatening illness.

原文英語
文章編號064108
期刊Biomicrofluidics
11
發行號6
DOIs
出版狀態已出版 - 01 11 2017
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© 2017 Author(s).

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