27 February 2014 Rapid transdermal bloodless and reagent-free malaria detection
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Abstract
Successful diagnosis, screening, and elimination of malaria critically depend on rapid and sensitive detection of this dangerous infection, preferably transdermally and without sophisticated reagents or blood drawing. Such diagnostic methods are not currently available. Here we show that the high optical absorbance and nanosize of endogenous heme nanoparticles called hemozoin, a unique component of all blood-stage malaria parasites, generate a transient vapor nanobubble around hemozoin in response to a short and safe near-infrared picosecond laser pulse. The acoustic signals of these malaria-specific nanobubbles provided the first transdermal non-invasive and rapid detection of a malaria infection as low as 0.00034% in animals without using any reagents or drawing blood. These on-demand transient events have no analogs among current malaria markers and probes, can detect and screen malaria in seconds and can be realized as a compact, easy to use, inexpensive and safe field technology.
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Ekaterina Y. Lukianova-Hleb, Kelly M. Campbell, Pamela E. Constantinou, Janet Braam, John S. Olson, Russell E. Ware, David S. Sullivan, Dmitri Lapotko, "Rapid transdermal bloodless and reagent-free malaria detection", Proc. SPIE 8935, Advanced Biomedical and Clinical Diagnostic Systems XII, 893509 (27 February 2014); doi: 10.1117/12.2040695; https://doi.org/10.1117/12.2040695
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