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BackgroundKnowledge about tuberculosis (TB) is important for TB control, and China's national TB control guidelines emphasise TB health promotion. A 2010 national TB epidemiology survey showed that the general public had limited knowledge and awareness of TB.ObjectiveTo assess the level of TB knowledge after 5 years of TB health promotion in Guizhou Province, one of the regions with the highest TB burden in China.Design and settingA community-based, cross-sectional survey of 10 237 residents of Guizhou Province from June to August 2015. Multiple logistic regression models were used to examine factors associated with core TB knowledge and TB health education among respondents.ResultsOverall, residents of Guizhou Province had inadequate knowledge of TB. The overall awareness of TB was 41.5%. Less than 30% of respondents were familiar with China's policy of free treatment for TB or knew that the disease could be cured. Factors associated with core TB knowledge included gender, age, ethnicity, education, occupation, region, and having received TB health education. Women, older adults, people employed in non-government institutions, and those living in counties with low TB burdens had little access to TB health education, whereas people with higher education levels had greater access. Respondents' sources of TB knowledge did not necessarily match their preferred channels for delivery of TB health education.ConclusionsOur findings indicate that TB health education should be further strengthened in China and other countries with a high TB burden. TB health education programmes require further formative and implementation research in order to improve programme effectiveness.

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We performed a matched case-control study using a propensity score matching, to assess the association of Th17-related cytokines, including interleukin (IL) 17A (IL-17A), IL-17F, IL-21, IL-22 and IL-6, along with interferon-γ (IFN-γ), IL-10, IL-9, and IL-4, with the risk of AF. A total of 336 patients with AF were matched 1:1 with patients without AF. Plasma levels of cytokines were measured using Luminex xMAP assays. The plasma levels of all examined cytokines were significantly higher in AF patients than controls (P < 0.05), and these cytokines were highly correlated with each other (P < 0.01). A multivariate conditional logistic regression analysis showed that elevated plasma levels of IL-17A, IL-17F, IL-21, IL-22, IFN-γ, IL-10, IL-9 and IL-6 were significantly associated with AF risk independently of potential confounders. There were no significant differences in plasma levels of examined cytokines between paroxysmal and chronic AF patients. IL-17A, IL-21, IL-10 and IL-6 levels were positively correlated with left atrial diameter; IL-17F level was negatively correlated with left ventricle ejection fraction among AF patients (P < 0.05). Elevated plasma levels of Th17-related cytokines were independently associated with increased an risk of AF; hence, Th17-related cytokines may be involved in the pathogenesis of AF.

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