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Related Experiment Video

Updated: Mar 24, 2026

Protrusion Force Microscopy: A Method to Quantify Forces Developed by Cell Protrusions
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Deformability Assessment of Waterborne Protozoa Using a Microfluidic-Enabled Force Microscopy Probe.

John S McGrath1, Jos Quist2, James R T Seddon2

  • 1Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom.

Plos One
|March 4, 2016
PubMed
Summary
This summary is machine-generated.

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FluidFM technology can distinguish between Cryptosporidium species and assess oocyst viability. This novel method aids in detecting harmful Cryptosporidium in drinking water, improving water safety for consumers.

Area of Science:

  • Environmental Science
  • Microbiology
  • Biophysics

Background:

  • Cryptosporidium oocysts in drinking water pose health risks, with current detection methods lacking specificity for species or viability.
  • Inadequate filtration technologies necessitate improved methods for identifying pathogenic Cryptosporidium in water supplies.

Purpose of the Study:

  • To evaluate the efficacy of FluidFM, a single-cell manipulation technique, in differentiating Cryptosporidium species and assessing oocyst viability.
  • To determine if oocyst deformability measured by FluidFM can serve as a marker for Cryptosporidium parvum viability.

Main Methods:

  • Utilized FluidFM, a force spectroscopy method with microchannelled cantilevers, for single-cell analysis of Cryptosporidium oocysts.
  • Assessed size and deformability properties of Cryptosporidium muris and Cryptosporidium parvum.

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  • Compared deformability of untreated and temperature-inactivated Cryptosporidium parvum oocysts.

    • Main Results:

    • FluidFM achieved 86% efficiency in distinguishing between Cryptosporidium muris and Cryptosporidium parvum.
    • The method processed over 50 oocysts per hour, demonstrating high throughput.
    • Significantly different deformability distributions were observed between untreated and inactivated Cryptosporidium parvum oocysts, suggesting deformability as a potential viability indicator.

    Conclusions:

    • FluidFM offers a high-throughput, single-cell approach for discriminating between Cryptosporidium species.
    • Oocyst deformability measured by FluidFM shows promise as a reliable indicator of Cryptosporidium parvum viability.
    • This technology can enhance the safety of drinking water by improving the detection of infectious Cryptosporidium parasites.