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Bispebjerg Hospital - a part of Copenhagen University Hospital
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Diabetes is a risk factor for pulmonary tuberculosis: a case-control study from Mwanza, Tanzania

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  1. Thermostability of IFN-γ and IP-10 release assays for latent infection with Mycobacterium tuberculosis: A TBnet study

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  2. Increased level of acute phase reactants in patients infected with modern Mycobacterium tuberculosis genotypes in Mwanza, Tanzania

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  3. The association between conventional risk factors and diabetes is weak among urban Tanzanians

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  • Daniel Faurholt-Jepsen
  • Nyagosya Range
  • George PrayGod
  • Kidola Jeremiah
  • Maria Faurholt-Jepsen
  • Martine Grosos Aabye
  • John Changalucha
  • Dirk Lund Christensen
  • Christian Bressen Pipper
  • Henrik Krarup
  • Daniel Rinse Witte
  • Aase Bengaard Andersen
  • Henrik Friis
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BACKGROUND: Diabetes and TB are associated, and diabetes is increasingly common in low-income countries where tuberculosis (TB) is highly endemic. However, the role of diabetes for TB has not been assessed in populations where HIV is prevalent.

METHODS: A case-control study was conducted in an urban population in Tanzania among culture-confirmed pulmonary TB patients and non-TB neighbourhood controls. Participants were tested for diabetes according to WHO guidelines and serum concentrations of acute phase reactants were measured. The association between diabetes and TB, and the role of HIV as an effect modifier, were examined using logistic regression. Since blood glucose levels increase during the acute phase response, we adjusted for elevated serum acute phase reactants.

RESULTS: Among 803 cases and 350 controls the mean (SD) age was 34.8 (11.9) and 33.8 (12.0) years, and the prevalence of diabetes was 16.7% (95% CI: 14.2; 19.4) and 9.4% (6.6; 13.0), respectively. Diabetes was associated with TB (OR 2.2, 95% CI: 1.5; 3.4, p<0.001). However, the association depended on HIV status (interaction, p = 0.01) due to a stronger association among HIV uninfected (OR 4.2, 95% CI: 1.5; 11.6, p = 0.01) compared to HIV infected (OR 0.1, 95% CI: 0.01; 1.8, p = 0.13) after adjusting for age, sex, demographic factors and elevated serum acute phase reactants.

CONCLUSION: Diabetes is a risk factor for TB in HIV uninfected, whereas the association in HIV infected patients needs further study. The increasing diabetes prevalence may be a threat to TB control.

Original languageEnglish
JournalP L o S One
Volume6
Issue number8
Pages (from-to)e24215
ISSN1932-6203
DOIs
Publication statusPublished - 2011

    Research areas

  • Adolescent, Adult, Case-Control Studies, Diabetes Complications, Female, HIV-1, HIV-2, Humans, Male, Risk Factors, Tanzania, Tuberculosis, Pulmonary, Journal Article, Research Support, Non-U.S. Gov't

ID: 51559011