Web of Science: 4 citas, Scopus: 5 citas, Google Scholar: citas,
Blastocystis sp. Carriage and Irritable Bowel Syndrome : Is the Association Already Established?
Salvador, Fernando (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Lobo Álvarez, Beatriz (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Goterris, Lidia (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Alonso Cotoner, Carmen (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Santos, Javier (Universitat Autònoma de Barcelona. Departament de Medicina)
Sulleiro Igual, Elena (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Bailo, Begoña (National Centre of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain; (B.B.); (D.C.); (I.F.))
Carmena, David (National Centre of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain; (B.B.); (D.C.); (I.F.))
Sánchez-Montalvá, Adrián (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Bosch-Nicolau, Pau (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Espinosa-Pereiro, Juan (Hospital Universitari Vall d'Hebron. Institut de Recerca)
Fuentes, Isabel (National Centre of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain; (B.B.); (D.C.); (I.F.))
Molina Romero, Israel (Hospital Universitari Vall d'Hebron. Institut de Recerca)

Fecha: 2021
Resumen: The intestinal protist Blastocystis sp. is one of the most common intestinal parasites observed in humans, and has a worldwide distribution, being more prevalent in developing countries. Although this parasite has been described decades ago, the pathogenic potential it is still not understood completely. It has been suggested that Blastocystis sp. could be related with irritable bowel syndrome, a functional gastrointestinal disorder characterized by abdominal pain, discomfort with defecation, and changes in the frequency or form of stool. In our study, we compare a group of patients with irritable bowel syndrome with a group of healthy volunteers; no differences regarding the occurrence of Blastocystis sp. detection was found between both groups. Background: The aim of the present study is to describe the occurrence of Blastocystis sp. detection among asymptomatic subjects and patients with irritable bowel syndrome in order to evaluate the potential association between irritable bowel syndrome and the parasitic infection. Methods: Cross-sectional study where adult patients with irritable bowel syndrome diagnosed according to Rome IV criteria were included. A control group was formed by asymptomatic subjects older than 18 years. Exclusion criteria were: immunosuppressive condition or having received any drug with demonstrated activity against Blastocystis sp. within the last 6 months before study inclusion. Epidemiological and clinical information was collected from all included participants. Two stool samples were obtained from all participants: one sample for microscopic examination and one sample for Blastocystis sp. PCR detection. Blastocystis sp. infection was defined by the positivity of any of the diagnostic techniques. Results: Seventy-two participants were included (36 asymptomatic subjects and 36 patients with irritable bowel syndrome). Thirty-five (48. 6%) were men, and median age of participants was 34 (IQR 29-49) years. The overall rate of Blastocystis sp. carriage was 27. 8% (20/72). The prevalence assessed through microscopic examination was 22. 2% (16/72), while the prevalence measured by PCR was 15. 3% (11/72). When comparing the presence of Blastocystis sp. between asymptomatic subjects and IBS patients, we did not find any statistically significant difference (36. 1% vs. 19. 4% respectively, p = 0. 114). Conclusions: regarding the occurrence of Blastocystis sp. , no differences were found between asymptomatic participants and patients with irritable bowel disease irrespective of the diagnostic technique performed.
Ayudas: Instituto de Salud Carlos III RD16/0027/0003
Instituto de Salud Carlos III RD16CIII/0003/0004
Derechos: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Lengua: Anglès
Documento: Article ; recerca ; Versió publicada
Materia: Blastocystis sp ; Irritable bowel syndrome ; Pathogenesis
Publicado en: Biology, Vol. 10 (april 2021) , ISSN 2079-7737

DOI: 10.3390/biology10040340
PMID: 33921803


8 p, 1.7 MB

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 Registro creado el 2022-02-20, última modificación el 2023-12-05



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