Mycobacterium avium paratuberculosis in Italy: Commensal or emerging human pathogen?

Dario Pistone, Piero Marone, Massimo Pajoro, Massimo Fabbi, Nadia Vicari, Silvio Daffara, Claudia Dalla Valle, Silvia Gabba, Davide Sassera, Annalisa Verri, Matteo Montagna, Sara Epis, Claudio Monti, Elena Giulia Strada, Vittorio Grazioli, Norma Arrigoni, Attilio Giacosa, Claudio Bandi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background: Specific bacterial infections or alterations of the gut microbiota likely trigger immuno-pathological phenomena associated with Crohn's disease and ulcerative colitis. Mycobacterium avium subspecies paratuberculosis is a candidate etiological agent of Crohn's disease. Definitive causal connection between Mycobacterium avium subspecies paratuberculosis infection and Crohn's disease has not been demonstrated. Aims: To determine the circulation of Mycobacterium avium subspecies paratuberculosis in Crohn's disease patients and water supplies in an Italian region where this bacterium is endemic in cattle farms. Methods: Mycobacterium avium subspecies paratuberculosis screening was performed on biopsies from human patients, and from water samples, using two different PCR procedures. Results: In hospitals where multiple specimens were obtained from different sites in the intestine, the prevalence of Mycobacterium avium subspecies paratuberculosis infection was 82.1% and 40% respectively in Crohn's disease and ulcerative colitis patients; in another hospital, where single specimens were obtained from patients, the bacterium was not detected. Control subjects also harboured Mycobacterium avium subspecies paratuberculosis, but at a lower prevalence. Tap water samples collected in the study area contained Mycobacterium avium subspecies paratuberculosis DNA. Discussion: The results of screenings for Mycobacterium avium subspecies paratuberculosis in humans are deeply influenced by both the number and location of the collected biopsies. There is a wide circulation of the organism in the study area, considering the prevalence in humans and its presence in drinking water.

Original languageEnglish
Pages (from-to)461-465
Number of pages5
JournalDigestive and Liver Disease
Volume44
Issue number6
DOIs
Publication statusPublished - Jun 2012

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Mycobacterium avium subsp. paratuberculosis
Italy
Crohn Disease
Ulcerative Colitis
Bacteria
Biopsy
Water
Water Supply
Infection
Bacterial Infections
Drinking Water
Intestines
Polymerase Chain Reaction

Keywords

  • Crohn's disease
  • MAP
  • PCR screening

ASJC Scopus subject areas

  • Gastroenterology
  • Hepatology

Cite this

Mycobacterium avium paratuberculosis in Italy : Commensal or emerging human pathogen? / Pistone, Dario; Marone, Piero; Pajoro, Massimo; Fabbi, Massimo; Vicari, Nadia; Daffara, Silvio; Dalla Valle, Claudia; Gabba, Silvia; Sassera, Davide; Verri, Annalisa; Montagna, Matteo; Epis, Sara; Monti, Claudio; Strada, Elena Giulia; Grazioli, Vittorio; Arrigoni, Norma; Giacosa, Attilio; Bandi, Claudio.

In: Digestive and Liver Disease, Vol. 44, No. 6, 06.2012, p. 461-465.

Research output: Contribution to journalArticle

Pistone, D, Marone, P, Pajoro, M, Fabbi, M, Vicari, N, Daffara, S, Dalla Valle, C, Gabba, S, Sassera, D, Verri, A, Montagna, M, Epis, S, Monti, C, Strada, EG, Grazioli, V, Arrigoni, N, Giacosa, A & Bandi, C 2012, 'Mycobacterium avium paratuberculosis in Italy: Commensal or emerging human pathogen?', Digestive and Liver Disease, vol. 44, no. 6, pp. 461-465. https://doi.org/10.1016/j.dld.2011.12.022
Pistone, Dario ; Marone, Piero ; Pajoro, Massimo ; Fabbi, Massimo ; Vicari, Nadia ; Daffara, Silvio ; Dalla Valle, Claudia ; Gabba, Silvia ; Sassera, Davide ; Verri, Annalisa ; Montagna, Matteo ; Epis, Sara ; Monti, Claudio ; Strada, Elena Giulia ; Grazioli, Vittorio ; Arrigoni, Norma ; Giacosa, Attilio ; Bandi, Claudio. / Mycobacterium avium paratuberculosis in Italy : Commensal or emerging human pathogen?. In: Digestive and Liver Disease. 2012 ; Vol. 44, No. 6. pp. 461-465.
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abstract = "Background: Specific bacterial infections or alterations of the gut microbiota likely trigger immuno-pathological phenomena associated with Crohn's disease and ulcerative colitis. Mycobacterium avium subspecies paratuberculosis is a candidate etiological agent of Crohn's disease. Definitive causal connection between Mycobacterium avium subspecies paratuberculosis infection and Crohn's disease has not been demonstrated. Aims: To determine the circulation of Mycobacterium avium subspecies paratuberculosis in Crohn's disease patients and water supplies in an Italian region where this bacterium is endemic in cattle farms. Methods: Mycobacterium avium subspecies paratuberculosis screening was performed on biopsies from human patients, and from water samples, using two different PCR procedures. Results: In hospitals where multiple specimens were obtained from different sites in the intestine, the prevalence of Mycobacterium avium subspecies paratuberculosis infection was 82.1{\%} and 40{\%} respectively in Crohn's disease and ulcerative colitis patients; in another hospital, where single specimens were obtained from patients, the bacterium was not detected. Control subjects also harboured Mycobacterium avium subspecies paratuberculosis, but at a lower prevalence. Tap water samples collected in the study area contained Mycobacterium avium subspecies paratuberculosis DNA. Discussion: The results of screenings for Mycobacterium avium subspecies paratuberculosis in humans are deeply influenced by both the number and location of the collected biopsies. There is a wide circulation of the organism in the study area, considering the prevalence in humans and its presence in drinking water.",
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T2 - Commensal or emerging human pathogen?

AU - Pistone, Dario

AU - Marone, Piero

AU - Pajoro, Massimo

AU - Fabbi, Massimo

AU - Vicari, Nadia

AU - Daffara, Silvio

AU - Dalla Valle, Claudia

AU - Gabba, Silvia

AU - Sassera, Davide

AU - Verri, Annalisa

AU - Montagna, Matteo

AU - Epis, Sara

AU - Monti, Claudio

AU - Strada, Elena Giulia

AU - Grazioli, Vittorio

AU - Arrigoni, Norma

AU - Giacosa, Attilio

AU - Bandi, Claudio

PY - 2012/6

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N2 - Background: Specific bacterial infections or alterations of the gut microbiota likely trigger immuno-pathological phenomena associated with Crohn's disease and ulcerative colitis. Mycobacterium avium subspecies paratuberculosis is a candidate etiological agent of Crohn's disease. Definitive causal connection between Mycobacterium avium subspecies paratuberculosis infection and Crohn's disease has not been demonstrated. Aims: To determine the circulation of Mycobacterium avium subspecies paratuberculosis in Crohn's disease patients and water supplies in an Italian region where this bacterium is endemic in cattle farms. Methods: Mycobacterium avium subspecies paratuberculosis screening was performed on biopsies from human patients, and from water samples, using two different PCR procedures. Results: In hospitals where multiple specimens were obtained from different sites in the intestine, the prevalence of Mycobacterium avium subspecies paratuberculosis infection was 82.1% and 40% respectively in Crohn's disease and ulcerative colitis patients; in another hospital, where single specimens were obtained from patients, the bacterium was not detected. Control subjects also harboured Mycobacterium avium subspecies paratuberculosis, but at a lower prevalence. Tap water samples collected in the study area contained Mycobacterium avium subspecies paratuberculosis DNA. Discussion: The results of screenings for Mycobacterium avium subspecies paratuberculosis in humans are deeply influenced by both the number and location of the collected biopsies. There is a wide circulation of the organism in the study area, considering the prevalence in humans and its presence in drinking water.

AB - Background: Specific bacterial infections or alterations of the gut microbiota likely trigger immuno-pathological phenomena associated with Crohn's disease and ulcerative colitis. Mycobacterium avium subspecies paratuberculosis is a candidate etiological agent of Crohn's disease. Definitive causal connection between Mycobacterium avium subspecies paratuberculosis infection and Crohn's disease has not been demonstrated. Aims: To determine the circulation of Mycobacterium avium subspecies paratuberculosis in Crohn's disease patients and water supplies in an Italian region where this bacterium is endemic in cattle farms. Methods: Mycobacterium avium subspecies paratuberculosis screening was performed on biopsies from human patients, and from water samples, using two different PCR procedures. Results: In hospitals where multiple specimens were obtained from different sites in the intestine, the prevalence of Mycobacterium avium subspecies paratuberculosis infection was 82.1% and 40% respectively in Crohn's disease and ulcerative colitis patients; in another hospital, where single specimens were obtained from patients, the bacterium was not detected. Control subjects also harboured Mycobacterium avium subspecies paratuberculosis, but at a lower prevalence. Tap water samples collected in the study area contained Mycobacterium avium subspecies paratuberculosis DNA. Discussion: The results of screenings for Mycobacterium avium subspecies paratuberculosis in humans are deeply influenced by both the number and location of the collected biopsies. There is a wide circulation of the organism in the study area, considering the prevalence in humans and its presence in drinking water.

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