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23 January 2020 Choice of Laboratory Tissue Homogenizers Matters When Recovering Nucleic Acid From Medically Important Ticks
Amanda M. Jones, Marshall T. Van de Wyngaerde, Erika T. Machtinger, Edwin G. Rajotte, Thomas C. Baker
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Abstract

Ticks can vector and transmit many pathogens and pose a serious human health threat throughout the world. After collection, many diagnostic laboratories must mechanically disrupt tick specimens for diagnostic testing and research purposes, but few studies have evaluated how well-commercial tissue homogenizers perform this task. We evaluated four commercially available tissue homogenizers: The Bead Ruptor 24 Elite, the Bullet Blender Storm, the gentleMACS Dissociator, and the Precellys 24. We quantitatively compared maceration level, nucleic acid quality, quantity, amplification, and DNA shearing to determine which machines performed the best. The Bead Ruptor 24 Elite had the highest overall score when disrupting a single, uninfected adult Amblyomma americanum (Linnaeus) (Ixodida: Ixodidae) and performed well in follow-on tests including disrupting individual juvenile samples and detecting pathogens from infected samples.

Published by Oxford University Press on behalf of Entomological Society of America 2020. This work is written by (a) US Government employee(s) and is in the public domain in the US.
Amanda M. Jones, Marshall T. Van de Wyngaerde, Erika T. Machtinger, Edwin G. Rajotte, and Thomas C. Baker "Choice of Laboratory Tissue Homogenizers Matters When Recovering Nucleic Acid From Medically Important Ticks," Journal of Medical Entomology 57(4), 1221-1227, (23 January 2020). https://doi.org/10.1093/jme/tjaa006
Received: 28 October 2019; Accepted: 2 January 2020; Published: 23 January 2020
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KEYWORDS
arthropod disruption
bead mill
tick pathogen
tick surveillance
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