First report on trichomonads from true bugs

Smejkalová, Pavla; Votýpka, Jan; Lukeš, Julius; Čepička, Ivan

doi:10.14411/fp.2014.025

Cited by 8 publications

(2 citation statements)

References 34 publications

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“…Simplicimonas sp. have since been described in Asian buffalo ( Bubalus bubalis ) [ 40 ] and in two species of bugs, Paraectatops costalis costalis and Melampheus faber [ 41 ]. A flagellate described as Simplicimonas sp.-like had been described in chicken in 2011 [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

Human intestinal parasites in Mahajanga, Madagascar: The kingdom of the protozoa

et al. 2018

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IntroductionIntestinal parasitic infections are a major public health problem in inter-tropical areas. The aim of our study was to describe the situation in Mahajanga, Madagascar with a particular focus on two protozoa, Dientamoeba fragilis and Blastocystis sp.MethodsThis was a prospective study from February to June 2015. Stool samples from symptomatic hospitalized patients and asymptomatic volunteers were submitted to microscopy and molecular assays in order to detect parasites.ResultsA wide panel of intestinal parasites were identified among the 265 included subjects, protozoa being the most prevalent with 72.8% whereas the prevalence of helminths and microsporidia was of 7.9% and 4.5%, respectively. Blastocystis sp. was the most prevalent protozoa (64.5% of the entire cohort) followed by various amoebas (35.5%) and flagellates (27,5%). We only detected subtypes 1, 2 and 3 of Blastocystis sp. Among the patients positive for D. fragilis (9.4%), 23 carried genotype 1 and 1 genotype 2. For the first time, we detected in 4 human stools the DNA of a recently described protozoon, Simplicimonas similis. Interestingly, subjects living in urban areas harbored significantly more different parasitic species than subjects living in rural areas with a correlation between sanitary level of neighborhood and protozoan infection. However, there was no difference in prevalence of digestive symptoms between parasite-free and parasite-infected subjects, except for Giardia intestinalis which had more symptomatic carriers.DiscussionOur study reveals a high overall parasite prevalence, similar to what had been found in 2003 in the same city and to other prevalence studies conducted in Africa. The poor access of the population to sanitary infrastructures may explain this result. Data from our study provide valuable key for sanitation programs and prevention of fecal-related infectious diseases.

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Section: Discussionmentioning

confidence: 99%

Human intestinal parasites in Mahajanga, Madagascar: The kingdom of the protozoa

et al. 2018

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“…Monocercomonas (once a large genus, later proven to be polyphyletic and redefined in its current form by Čepička et al., 2010 and Hampl et al., 2007) has only been molecularly detected in squamate hosts (Tuska‐Szalay et al., 2022); Tritrichomonas has instead been found in various kinds of tetrapods (Tachezy et al., 2002); Dientamoebea genera are symbionts of birds or humans, and one not‐yet‐barcoded genus, Protrichomonas , was also reported from fish (Brugerolle & Lee, 2000; Mantini et al., 2009; Stark et al., 2016). Simplicimonadea as defined here includes two subgroups: Simplicimonas , confirmed in squamates and bugs (Čepička et al., 2010; Smejkalová et al., 2014), and a clade of termite (Kalotermitidae and Archotermopsidae) symbionts including the putative Tricercomitus (Taerum et al., 2018).…”

Section: Resultsmentioning

confidence: 99%

Updated classification of the phylum Parabasalia

Boscaro,

James,

Fiorito

et al. 2024

J Eukaryotic Microbiology

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The phylum Parabasalia includes very diverse single‐cell organisms that nevertheless share a distinctive set of morphological traits. Most are harmless or beneficial gut symbionts of animals, but some have turned into parasites in other body compartments, the most notorious example being Trichomonas vaginalis in humans. Parabasalians have garnered attention for their nutritional symbioses with termites, their modified anaerobic mitochondria (hydrogenosomes), their character evolution, and the wholly unique features of some species. The molecular revolution confirmed the monophyly of Parabasalia, but considerably changed our view of their internal relationships, prompting a comprehensive reclassification 14 years ago. This classification has remained authoritative for many subgroups despite a greatly expanded pool of available data, but the large number of species and sequences that have since come out allow for taxonomic refinements in certain lineages, which we undertake here. We aimed to introduce as little disruption as possible but at the same time ensure that most taxa are truly monophyletic, and that the larger clades are subdivided into meaningful units. In doing so, we also highlighted correlations between the phylogeny of parabasalians and that of their hosts.

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