This study will be investigating the effect of latent tuberculosis infection (LTBI) treatment on glucose tolerance and low-grade inflammation. Almost a century ago, researchers proposed that diabetes (DM) was associated with increased risk of Tuberculosis infection (TB). A more recent systematic review concluded that DM increases the relative risk for TB 3.1 times. Reversely, TB may affect the glycaemic control; TB is in many cases a chronic infection characterised by long term low-grade inflammation and weight loss, and persons with TB are known to be at risk of hyperglycaemia and DM at time of diagnosis. A latent infection with the m.tuberculosis bacteria is "silent" without symptoms. 1,7 billion have LTBI on a global scale. Event though the infected person does not experience symptoms, increased background inflammation has been shown in LTBI patients in previous studies. We also know that an increase in inflammatory markers precedes clinical development of DM, and that subclinical inflammation contributes to insulin resistance. We hypothesise that LTBI contributes to dysregulated glucose metabolism due to increased low-grade inflammation, and that treatment will reduce low-grade inflammation and improve glucose tolerance.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
32
Rifampicin 600 mg orally once daily for 4 months
Isoniazid 300 mg daily for 6 months
Herlev-Gentofte Hospital
Copenhagen, Denmark
OGTT (oral glucose tolerance test)
Reduction in plasma glucose area under the curve during OGTT
Time frame: Time Frame: 4-6 months (depending on treatment)
Changes in insulin production
Insulin/c-peptid, HOMA-B pre and post treatment
Time frame: Time Frame: 4-6 months (depending on treatment)
Changes in insulin resistance
HOMA-IR pre and post treatment
Time frame: Time Frame: 4-6 months (depending on treatment)
Changes in low-grade inflammatory markers and in adipokines
A panel of cytokines and adipokines
Time frame: Time Frame: 4-6 months (depending on treatment)
INF-gamma change
Changes in IFN-γ levels after incubation with saline solution, TB antigen or phytohemagglutinin A Pre, during and post treatment
Time frame: Time Frame: 4-6 months (depending on treatment)
Changes in body composition
Body composition pre and post treatment measured with DEXA-scanning and/or bioimpedance
Time frame: Time Frame: 4-6 months (depending on treatment)
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