We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Levels of vitamin D-associated cytokines distinguish between active and latent tuberculosis following a tuberculosis outbreak.
- Authors
Hong, Yoonki; Kim, Youngmi; Lee, Jae Jun; Lee, Myung Goo; Lee, Chang Youl; Kim, Youlim; Heo, Jeongwon; Han, Seon-Sook; Lee, Seung-Joon; Kim, Woo Jin; Hong, Ji Young
- Abstract
<bold>Background: </bold>Vitamin D levels are associated with the extent of mycobactericidal activity. Interleukin (IL)-15 and IL-32 play roles in the vitamin D-mediated tuberculosis (TB) defense mechanism. Vitamin D induces IL-1β, which plays an important role in terms of resistance to TB. We evaluated whether the levels of vitamin D-related cytokines distinguished between those with active TB and latent TB infection (LTBI).<bold>Methods: </bold>In total, 50 TB-infected patients (25 with active TB and 25 with LTBI following a TB outbreak in a high school) were enrolled. Plasma 25-hydroxyvitamin D (25[OH]D), IL-15, IL-32, and IL-1β levels were measured via enzyme-linked immunosorbent assays. Mycobacterium tuberculosis-specific antigen-induced and unstimulated cytokine levels were measured in the supernatants of the QuantiFERON TB Gold-In-Tube (QFT-GIT) assay.<bold>Results: </bold>Plasma 25(OH)D and plasma IL-15 levels were lower in patients with active TB than in LTBI subjects (25(OH)D: 16.64 ng/mL vs. 21.6 ng/mL, P = 0.031; IL-15: 148.9 pg/mL vs. 189.8 pg/mL, P = 0.013). Plasma 25(OH)D levels correlated with the plasma levels of IL-15 and IL-1β in TB-infected patients. In addition, the plasma 25(OH)D levels correlated positively with the level of unstimulated IL-15 (IL-15nil) and negatively with that of TB antigen-stimulated IL-32 (IL-32TB) in QFT-GIT supernatants. Although the IL-15nil and IL-15TB levels were higher in LTBI subjects than patients with active TB, the IL-32nil and IL-32TB levels were higher in the latter patients. A combination of the IL-15nil and IL-32TB levels accurately predicted 91.3% of active TB patients and latent subjects, with an area under the curve of 0.964.<bold>Conclusions: </bold>Our preliminary data showed that the levels of the vitamin D-related cytokines IL-15 and IL-32 differed between active TB patients and LTBI subjects. This result might be used as a basic data for developing biomarkers distinguishing between active TB and LTBI.
- Subjects
SOUTH Korea; VITAMIN D; TUBERCULOSIS in cattle; TUBERCULOSIS; ENZYME-linked immunosorbent assay; VITAMINS; ANTIMICROBIAL peptides; CYTOKINES; TUBERCULOSIS diagnosis; TUBERCULOSIS epidemiology; DISEASE outbreaks; INTERLEUKINS; MYCOBACTERIUM tuberculosis; RESEARCH funding; ROUTINE diagnostic tests
- Publication
BMC Infectious Diseases, 2019, Vol 19, Issue 1, pN.PAG
- ISSN
1471-2334
- Publication type
journal article
- DOI
10.1186/s12879-019-3798-5