Diversity of Blastocystis subtypes in wild mammals from a zoo and two conservation units in southeastern Brazil

Oliveira-Arbex, Ana Paula; David, Érica Boarato; Tenório, Michely da Silva; Cicchi, Paulo José Pyles; Patti, Mariella; Coradi, Silvana Torossian; Lucheis, Simone Baldini; Jim, Jorge; Guimarães, Semíramis

doi:10.1016/j.meegid.2019.104053

Cited by 28 publications

(25 citation statements)

References 40 publications

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“…To our knowledge, only one study has reported the occurrence of Blastocystis in a peccary's stool sample derived from the Center for the Conservation of Wild Fauna in Brazil. The sequence analysis confirmed the presence of Blastocystis in this sample; however, subtyping was unsuccessful [54]. Thus, our study was probably the first to identify the subtype of Blastocystis, namely ST5, in peccaries.…”

Section: Genetic Diversity Of Detected Blastocystismentioning

confidence: 53%

Molecular Characterization of Blastocystis from Animals and Their Caregivers at the Gdańsk Zoo (Poland) and the Assessment of Zoonotic Transmission

Rudzińska

Kowalewska

Waleron

et al. 2021

Biology

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Blastocystis is a highly genetically diverse gut protist commonly found in humans and various animals. The role of animals in human infection is only partly understood. The aim of this study was to determine the host specificity and possibility of zoonotic transmission of this microorganism. Subtypes of Blastocystis isolated from 201 zoo animals and their 35 caregivers were identified by sequencing of the SSU rRNA gene. Blastocystis was found in 26.86% of animal and 17.14% of human samples. Both mammalian (ST1–ST3, ST5, ST8, ST10, ST13, ST14) and non-mammalian subtypes were detected. Of the subtypes found in non-human primates (ST1, ST2, ST3, and ST13), two subtypes (ST1 and ST3) were also detected in humans. The presence of identical ST1 sequences in three monkeys and their caregiver indicates the possibility of direct transmission of Blastocystis between these animals and humans. Detection of ST5 only in wild boars and peccaries, ST8 only in Marsupial, ST10 and ST14 only in Bovidae, and non-mammalian subtypes in reptiles suggests higher host specificity for these subtypes, and indicates that their transmission between animals and humans is unlikely. Additionally, this was probably the first time that ST5 was found in peccaries, ST2 in patas monkeys, and ST8 in red kangaroos.

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Section: Genetic Diversity Of Detected Blastocystismentioning

confidence: 53%

Molecular Characterization of Blastocystis from Animals and Their Caregivers at the Gdańsk Zoo (Poland) and the Assessment of Zoonotic Transmission

Rudzińska

Kowalewska

Waleron

et al. 2021

Biology

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“…In the present study ST8 was identified in a 10-year-old female reporting no contact with companion animals and no obvious risk factors for parasite infections. ST8 carriage has been previously documented almost exclusively in captive and free-living non-human primates in Central America [64,65], South America [66,67], and Europe [68]. Remarkably, an unexpectedly high prevalence of ST8 was seen among primate handlers in a zoological garden in UK, suggesting that zoonotic transmission of Blastocystis ST8 infections from primates to their handlers had occurred [68].…”

Section: Discussionmentioning

confidence: 98%

Molecular Diversity of Giardia duodenalis, Cryptosporidium spp. and Blastocystis sp. in Asymptomatic School Children in Leganés, Madrid (Spain)

et al. 2020

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Enteric parasites including Giardia duodenalis, Cryptosporidium spp., and to a lesser extent, Blastocystis sp. and Enterocytozoon bieneusi, are major worldwide contributors to diarrhoeal disease. Assessing their molecular frequency and diversity is important to ascertain the sources of infection, transmission dynamics, and zoonotic potential. Little molecular information is available on the genotypes of these pathogens circulating in apparently healthy children. Here, we show that asymptomatic carriage of G. duodenalis (17.4%, 95% CI: 15.5–19.4%), Blastocystis sp. (13.0%, 95% CI: 11.4–14.8%), and Cryptosporidium spp. (0.9%, 95% CI: 0.5–1.5%) is common in children (1–16 years; n = 1512) from Madrid, Spain. Our genotyping data indicate that; (i) the observed frequency and diversity of parasite genetic variants are very similar to those previously identified in Spanish clinical samples, so that the genotype alone does not predict the clinical outcome of the infection, (ii) anthroponotic transmission accounts for a large proportion of the detected cases, highlighting that good personal hygiene practices are important to minimizing the risk of infection, (iii) Blastocystis ST4 may represent a subtype of the parasite with higher pathogenic potential, and (iv) Enterocytozoon bieneusi does not represent a public health concern in healthy children.

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“…Similarly, two different surveys reported the prevalence of Blastocystis sp. at 37% and 60% in non‐human primates in Rio de Janeiro and southeastern Brazil (Oliveira‐Arbex et al., 2020; Valença‐Barbosa et al., 2019). A survey of howler monkeys in northwestern Ecuador found Blastocystis sp.…”

Section: Discussionmentioning

confidence: 99%

“…Although many animals typically have relatively low Blastocystis sp. infection rates, non-human primates appear to more frequently harbour (Oliveira-Arbex et al, 2020;Valença-Barbosa et al, 2019). A survey of howler monkeys in northwestern Ecuador found Blastocystis sp.…”

Section: Prevalence Rates Ofmentioning

confidence: 99%

Molecular prevalence and subtypes of Blastocystis sp. in primates in northern China

Qiao

Wang

et al. 2020

Transbound. Emerg. Dis.

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Blastocystis sp. is the most common gastrointestinal eukaryotic parasite in humans; it is also common in many animals worldwide (Alfellani et al., 2013; Hazhir, Shahram, Shahrzad, Mehdi, & Elham, 2014). As a pathogen of zoonosis, Blastocystis sp. has been found in Primates, Rodentia, Artiodactyla, Perissodactyla and Aves. However, there is a dispute regarding the pathogenicity of Blastocystis sp., since the

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Diversity of Blastocystis subtypes in wild mammals from a zoo and two conservation units in southeastern Brazil

Cited by 28 publications

References 40 publications

Molecular Characterization of Blastocystis from Animals and Their Caregivers at the Gdańsk Zoo (Poland) and the Assessment of Zoonotic Transmission

Molecular Characterization of Blastocystis from Animals and Their Caregivers at the Gdańsk Zoo (Poland) and the Assessment of Zoonotic Transmission

Molecular Diversity of Giardia duodenalis, Cryptosporidium spp. and Blastocystis sp. in Asymptomatic School Children in Leganés, Madrid (Spain)

Molecular prevalence and subtypes of Blastocystis sp. in primates in northern China

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