2026-08-29T14:55:10Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/190112024-10-31T12:01:33Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19609
Repisalud
author
Dashti, Alejandro
author
Alonso, Henar
author
Escolar-Miñana, Cristina
author
Köster, Pamela Carolina
author
Bailo-Barroso, Begoña
author
Carmena, David
author
Gonzalez-Barrio, David
funder
Instituto de Salud Carlos III
funder
Ministerio de Ciencia, Innovación y Universidades (España)
2024-03-20T08:32:48Z
2024-03-20T08:32:48Z
2024-02-01
Diagnostics (Basel). 2024 Feb 1;14(3):319.
10.3390/diagnostics14030319
2075-4418
Diagnostics (Basel, Switzerland)
38337835
http://hdl.handle.net/20.500.12105/19011
Cryptosporidium spp., Giardia duodenalis and Entamoeba histolytica are species of protozoa- causing diarrhoea that are common worldwide, while Entamoeba dispar, Dientamoeba fragilis and Blastocystis sp. appear to be commensal parasites whose role in pathogenicity remains controversial. We conducted the clinical evaluation of five singleplex and one duplex CerTest VIASURE Real-Time PCR Assays against a large panel of positive DNA samples (n = 358), and specifically to Cryptosporidium spp. (n = 96), G. duodenalis (n = 115), E. histolytica (n = 25) E. dispar (n = 11), Blastocystis sp. (n = 42), D. fragilis (n = 37), and related parasitic phylum species such as Apicomplexa, Euglenozoa, Microsporidia and Nematoda. DNA samples were obtained from clinical stool specimens or cultured isolates in a national reference centre. Estimated diagnostic sensitivity and specificity values were 0.94-1 for Cryptosporidium spp., 0.96-0.99 for G. duodenalis, 0.96-1 for E. histolytica, 1-1 for E. dispar, and 1-0.99 for D. fragilis in the evaluated singleplex assays. In the duplex assay for the simultaneous detection of Blastocystis sp. and D. fragilis these values were 1-0.98 and 1-0.99, respectively. Measures of diagnostic precision for repeatability and reproducibility were found to be under acceptable ranges. The assays identified six Cryptosporidium species (C. hominis, C. parvum, C. canis, C. felis, C. scrofarum, and C. ryanae), four G. duodenalis assemblages (A, B, C, and F), and six Blastocystis subtypes (ST1-ST5, and ST8). The evaluated singleplex and duplex VIASURE Real-Time PCR assays provide sensitive, practical, and cost-effective choices to the molecular diagnosis of the main diarrhoea-causing intestinal protists in clinical microbiology and research laboratories.
eng
Molecular diagnostics
Real-time PCR
Gastrointestinal parasites
Diarrhoea
Microbiology laboratory
Evaluation of the Use of Singleplex and Duplex CerTest VIASURE Real-Time PCR Assays to Detect Common Intestinal Protist Parasites
research article
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EvaluationUseSingleplexDuplex_2024.pdf.txt
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