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Distinguishing Body Lice from Head Lice by Multiplex Real-Time PCR Analysis of the Phum_PHUM540560 Gene

Abstract : Background: Body louse or head louse? Once removed from their environment, body and head lice are indistinguishable. Neither the morphological criteria used since the mid-18th century nor the various genetic studies conducted since the advent of molecular biology tools have allowed body lice and head lice to be differentiated. In this work, using a portion of the Phum_PHUM540560 gene from the body louse, we aimed to develop a multiplex real-time polymerase chain reaction (PCR) assay to differentiate between body and head lice in a single reaction. Materials and Methods A total of 142 human lice were collected from mono-infested hosts from 13 countries on five continents. We first identified the louse clade using a cytochrome b (CYTB) PCR sequence alignment. We then aligned a fragment of the Phum_PHUM540560 gene amplified from head and body lice to design-specific TaqMan© FAM- and VIC-labeled probes. Results: All the analyzed lice were Clade A lice. A total of 22 polymorphisms between the body and head lice were characterized. The multiplex real-time PCR analysis enabled the body and head lice to be distinguished in two hours. This method is simple, with 100% specificity and sensitivity. Conclusions:We confirmed that the Phum_PHUM540560 gene is a useful genetic marker for the study of lice.
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Submitted on : Thursday, April 19, 2018 - 6:10:28 PM
Last modification on : Friday, September 23, 2022 - 10:44:04 AM
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Rezak Drali, Amina Boutellis, Didier Raoult, Jean Marc Rolain, Philippe Brouqui. Distinguishing Body Lice from Head Lice by Multiplex Real-Time PCR Analysis of the Phum_PHUM540560 Gene. PLoS ONE, 2013, 8 (2), pp.e58088. ⟨10.1371/journal.pone.0058088⟩. ⟨hal-01771773⟩



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