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The sensitivity of interferon-gamma release assays is not compromised in tuberculosis patients with diabetes.


ABSTRACT: the sensitivity of the interferon-gamma release assays (IGRAs) in the detection of Mycobacterium tuberculosis infection or disease may be affected by immune dysregulation in diabetes. As millions of type 2 diabetes patients are at risk for tuberculosis (TB) worldwide, it is important to determine if the sensitivity of IGRAs is compromised in this vulnerable population.the sensitivity of the IGRAs QuantiFERON®-TB Gold (QFT-G) and T-SPOT®.TB was evaluated among specimens from newly diagnosed adults with microbiologically confirmed TB with and without diabetes. We also evaluated the association between QFT-G results and diabetes-associated conditions (dyslipidemia, obesity).QFT-G sensitivity was 70% among TB patients. Patients with diabetes, chronic hyperglycemia or overweight/obesity were more than twice as likely to have positive test results in multivariate models (P < 0.05). Low high-density lipoprotein cholesterol or high triglycerides were not associated with assay results. In a separate group of TB patients (n = 43), T-SPOT.TB was 93% sensitive, with similar performance in patients with and without diabetes.IGRA sensitivity is not compromised by diabetes in TB patients. Accordingly, IGRAs may also be suitable for diagnosing TB infection in diabetes patients, which is required to assess TB risk.

SUBMITTER: Walsh MC 

PROVIDER: S-EPMC3085021 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature

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The sensitivity of interferon-gamma release assays is not compromised in tuberculosis patients with diabetes.

Walsh M C MC   Camerlin A J AJ   Miles R R   Pino P P   Martinez P P   Mora-Guzmán F F   Crespo-Solis J G JG   Fisher-Hoch S P SP   McCormick J B JB   Restrepo B I BI  

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease 20110201 2


<h4>Setting and objectives</h4>the sensitivity of the interferon-gamma release assays (IGRAs) in the detection of Mycobacterium tuberculosis infection or disease may be affected by immune dysregulation in diabetes. As millions of type 2 diabetes patients are at risk for tuberculosis (TB) worldwide, it is important to determine if the sensitivity of IGRAs is compromised in this vulnerable population.<h4>Design</h4>the sensitivity of the IGRAs QuantiFERON®-TB Gold (QFT-G) and T-SPOT®.TB was evalua  ...[more]

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