SARS-CoV-2 and superimposed infection by trichomonads

Duboucher, Christophe

doi:10.1016/j.jinf.2020.11.038

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2023

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“…Much of the diversity of Tetratrichomonas is not captured in our 18S rRNA gene phylogeny because many strains have been characterized by sequencing the ITS region only, including T. empyemagena (Lopez-Escamilla et al, 2013). Pentatrichomonas hominis is normally found in human intestines, not lungs, but it has been detected in lung samples in two case reports (Duboucher, 2021;Leterrier et al, 2012;Yao & Ketzis, 2018).…”

Section: R E Su Lt S a N D Discussionmentioning

confidence: 99%

True molecular phylogenetic position of the cockroach gut commensal Lophomonas blattarum (Lophomonadida, Parabasalia)

Nguyen

Taerum

Jasso‐Selles

et al. 2023

J Eukaryotic Microbiology

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Lophomonas blattarum is a facultative commensal gut dweller of common pest cockroaches. Its cells are roughly spherical in shape with an apical tuft of ~50 flagella. Controversially, it has been implicated in human respiratory infections based on light microscopic observations of similarly shaped cells in sputum or bronchoalveolar lavage fluid. Here, we have sequenced the 18S rRNA gene of L. blattarum and its sole congener, Lophomonas striata, isolated from cockroaches. Both species branch in a fully supported clade with Trichonymphida, consistent with a previous study of L. striata, but not consistent with sequences from human samples attributed to L. blattarum.

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Section: R E Su Lt S a N D Discussionmentioning

confidence: 99%