View clinical trials related to Tuberculosis.
Filter by:The study hypothesis is that type 2 diabetics have abnormal cell-mediated immunity to tuberculosis manifesting as altered cytokine responses by peripheral blood mononuclear cells (PBMCs). This hypothesis will be tested using the live tuberculosis vaccine, Bacille Calmette-Guerin (BCG), in U.S.-born type 2 diabetics and nondiabetics. The investigators will control for potential confounding by age, sex, race, comorbidities, and select medications. Expression of key cytokines will be measured with real-time polymerase chain reaction.
The trial will evaluate the extended bactericidal activity of 14 consecutive days of oral administration of PA-824 at 200, 600, 1000 and 1200 mg per day in adult patients with newly diagnosed, uncomplicated, smear positive tuberculosis. A control group will receive standard TB treatment.
The aim of this study is to elucidate the prevalence of nontuberculous mycobacterial (NTM) co-infection in patients with smear positive pulmonary TB. To detect the NTM co-infection, we will perform duplex PCR targeted for mycobacterial hsp 65 gene using sputa. In addition, the clinical significance of this co-infection will be evaluated.
Tuberculosis is one of the major health problems in developing countries. Isoniazid, rifampin and pyrazinamide, the first line drugs used for tuberculosis chemotherapy, are associated with hepatotoxicity. The rate of hepatotoxicity has been reported to be much higher in developing countries compared to that in advanced countries with a similar dose schedule. Oxidative stress has proposed as one of the mechanisms responsible for anti-tuberculosis drugs induced hepatic injury. The oxidative stress is closely associated with decrease of glutathione levels. In the present study N acetylcysteine, a precursor of glutathione, was investigated for hepatoprotective effect against anti-tuberculosis drugs induced liver injury.
Tuberculosis (TB) remains as an important public health problem worldwide. Pleural tuberculosis is the most prevalent form of extrapulmonary presentation in immunocompetent patients. The volume of effusion in the pleural space of patients with pleural TB may cause complications like restrictive ventilator lung functional disturb and/or pleural thickening. The respiratory physiotherapy can be adjuvant on treatment of pleural effusion tuberculosis throughout of various treatment technique. The Continuous positive airway pressure (CPAP) is utilized in various pathologic, this improves lung mechanics by recruiting atelectatic alveoli, improving pulmonary compliance, and reducing the work of breathing. The aim of this study is to determine the effect of CPAP on fluid absorption among patients with pleural effusion due tuberculosis.
In populations with high prevalence of latent tuberculosis infection (LTBI), malnutrition (PEM) may influence incident rates of TB. PEM and specific micronutrient deficiencies compromise cell mediated immunity (CMI) and increase susceptibility to, or severity of infections. Vitamin A supplementation significantly reduces all-cause child mortality. The mechanism of the benefits of supplementation on clinical outcomes is largely unknown, but is likely to be related to an influence on the immune system. Vitamin A supplementation promotes lymphogenesis and induces a higher proportion of CD4 naïve T-cells in children. Most cases of LTBI that progress to active disease are vitamin A deficient. Vitamin A deficiency is common in most TB endemic countries. At the MRC, 32% of TBCC contacts were vitamin A deficient. Hypothesis: The investigators plan to test the hypotheses: that supplementation with vitamin A will affect the magnitude and quality of immune responses to mycobacterial antigens and progression to clinical disease.
After exposure to an active case of tuberculosis (TB), close contacts may be infected. They are then considered as having latent tuberculosis infection (LTBI). Detecting LTBI is the main goal of contact tracing procedures after exposure to TB. Until recently, the only test available for detecting LTBI was the tuberculin skin test (TST). More recent tests are now available (Interferon-gamma release assays: IGRA), which are more specific and sensitive than the TST. This study compares the TST and an IGRA in the routine activity of contact tracing in our area.
We have previoulsy shown that patients with active Tuberculosis develop a wide array of autoantibodies including rheumatoid factor, anti-CCP, Antinuclear facyor and anti Sm antibodies. The purpose of this study is to evaluate whether the level of autoantibodies decrease after treatment aganist tuberculosis.
This study examines the early immune response to a new vaccine (MVA85A) being developed to combat tuberculosis (TB).
The aim of this study is to evaluate the safety of a new vaccine against Tuberculosis (RUTI) when administered to healthy adult volunteers, compared to placebo; and determine its safe dosage range. An initial evaluation of immune responses to the vaccine compared to placebo will also be undertaken. In the present Phase I clinical trial, four increasing doses of RUTI will be tested, the groups composed by 6 volunteers each. (Total of 24 volunteers). The escalation to a new dose to test will be done after the safety of the previous dose has been ensured. For each dose of FCMtb to test, each volunteer will be inoculated twice (at day 0 and day 28) with RUTI (4 volunteers) or placebo (2 volunteers) and will be followed-up up to 25 weeks from the first inoculation. The global length of the study will be approximately 15 months.