Document Detail


Evaluating the non-tuberculous mycobacteria effect in the tuberculosis infection diagnosis.
MedLine Citation:
PMID:  20123845     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of the present study was to determine the role of previous non-tuberculous mycobacteria sensitisation in children as a factor of discordant results between tuberculin skin test (TST) and an in vitro T-cell based assay (T-SPOT.TB; Oxford Immunotec, Oxford, UK). We enrolled 21 non-bacille Calmette-Guérin-vaccinated paediatric patients for suspicious of latent tuberculosis infection (LTBI). These patients yielded a positive TST and a negative T-SPOT.TB. Cells were stimulated with Mycobacterium avium sensitin (having cross-reaction with Mycobacterium intracellulare and Mycobacterium scrofulaceum) and the presence of reactive T-cells was determined by an ex vivo ELISPOT. From the 21 patients, in 10 cases (47.6%), we obtained a positive ELISPOT result after stimulation with M. avium sensitin, in six (28.6%) cases, the result was negative and in the remaining five (23.8%) cases, the result was indeterminate. In conclusion, previous non-tuberculous mycobacteria sensitisation induces false-positive results in the TST for diagnosing LTBI and the use of gamma-interferon tests could avoid unnecessary chemoprophylaxis treatment among a child population.
Authors:
I Latorre; M De Souza-Galvão; J Ruiz-Manzano; A Lacoma; C Prat; N Altet; V Ausina; J Domínguez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The European respiratory journal     Volume:  35     ISSN:  1399-3003     ISO Abbreviation:  Eur. Respir. J.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-03     Completed Date:  2010-11-16     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  8803460     Medline TA:  Eur Respir J     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  338-42     Citation Subset:  IM    
Affiliation:
Servei de Microbiologia, Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Carretera del Canyet s/n, 08916 Badalona Barcelona Spain.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Bacterial Infections
Case-Control Studies
Child
Child, Preschool
Female
Humans
Interferon-gamma / metabolism
Latent Tuberculosis
Male
Mycobacterium / metabolism*
Mycobacterium avium / immunology*
Retrospective Studies
Tuberculin Test / methods
Tuberculosis / diagnosis*,  microbiology*
Chemical
Reg. No./Substance:
82115-62-6/Interferon-gamma
Comments/Corrections
Comment In:
Eur Respir J. 2010 Jul;36(1):214-5; author reply 215-6   [PMID:  20595171 ]

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