View clinical trials related to Tuberculosis.
Filter by:Tuberculosis remains one of the largest health problems in the world today. Multidrug therapy is necessary to cure tuberculosis patients and to prevent the selection of drug-resistant mutants, however, which may increase the incidence of side effects during the course of treatment. These side effects may be mild as well as fatal. A severe side effect against one of the anti-TB drugs, which influences drug compliance, may lead to the discontinuation of that drug. At the same time, the risk of treatment failure and relapse are higher. Therefore monitoring the rate of anti-TB drugs induced adverse effects and the related risk factors is crucial. Awareness of the risk groups may decrease the incidence of serious drug-related side effects and medical cost. The fixed-dose combinations (FDCs) of tablets against tuberculosis is now being recommended by WHO, which simplify the prescription of drugs and prevent the development of drug resistance. However, the FDC regimen is not consistent with the dosages that are usually given, the higher risk of drug toxicity and adverse reactions should be considered. To our knowledge, there was no report to assess the adverse effects of FDC anti-TB drugs in Taiwan. The aim of the present study is to investigate the current incidence of side effects and the risk factors related to FDC drugs for side effects during the initial phase of therapy.
simple verbal intervention with figure of lung and upper respiratory tract will be helpful to adequately collecting sputum. and in the acceptable specimen based on Gram stain, positivity for AFB stain and culture rate will be higher.
Although mediastinal tuberculous lymphadenopathy is not rare in adults of such an abnormality. Isolated mediastinal without a parenchymal lung lesion in adults is unusual with the incidence of 0.25%-5.8%. It occurs most commonly in Asian and black people, and presents a diagnostic problem. The definite diagnosis requires microbiology or pathology study. Cervical mediastinoscopy remained the gold standard to sample the mediastnial lymph nodes, but this technique can access lymph node station 1-4, 7 only. EBUS-TBNA allows the mediastinal lymph nodes to be targeted in the areas accessible to cervical mediastinoscopy, as well as some hilar nodes (lymph node stations 2-4, 7, 10-12). Currently, the main indication of EBUS-TBNA is the mediastinal nodal staging of NSCLC after recent meta-analyses established the comparable sensitivity and specificity of nodal staging by EBUS-TBNA and cervical mediastinoscopy. Theoretically, mediastnial tuberculous lymphadenopathy could be diagnosed by the method of EBUS-TBNA. Douglas F. Johnson was the first doctor to report 2 cases of mediastinal tuberculous lymphadenopathy diagnosed by EBUS-TBNA in 2009. There are currently no much data on the use of this technique in this field. The investigators plan to perform a prospective single-center study to investigate the diagnostic efficacy of mediastinal tuberculous lymphadenopathy by sampling the culprit nodes via EBUS-TBNA. Concomitant sputum specimen for acid-fast stain and mycobacterial culture were collected as well.
The study will investigate whether combination antiretroviral therapy of raltegravir and 3TC/ABC is effective and safe to use in tuberculosis (TB)/HIV co-infected adults receiving rifabutin-containing, first-line antituberculous treatment. Hypothesis:Combination antiretroviral therapy of raltegravir and 3TC/ABC and is effective and safe to use in tuberculosis (TB)/HIV co-infected adults receiving rifabutin-based first-line antituberculous treatment.
The purpose of this study is to evaluate the effect of food on pharmacokinetic profile of multiple doses orally administered first-line anti-tuberculosis drugs in subjects with pulmonary tuberculosis.
This research will help doctors interested in the usefulness of a new test to discover hidden tuberculosis infections in patients diagnosed with rheumatoid arthritis (RA). This new test is called Quantiferon-Gold (QFT-G). After immune system medicines that block TNF-alpha (a protein manufactured by white blood cells to stimulate and activate the immune system in response to infection or cancer) started to be used, the rate of tuberculosis infections in patients treated with these medicines has increased. Doctors think that the investigators may be missing some tuberculosis infections that were hidden before the medicine is started. This new QFT-G test might better diagnose these hidden tuberculosis infections than the current tuberculosis skin test, also known as a PPD/TST. The investigators would like to compare these two tests to find out which is better at detecting these hidden infections. At the same time the investigators will measure the strength of the patient's immune system with a blood test. If you are being considered for a TNF-alpha inhibitor medicine, or are getting the patient's routine PPD/TST, the investigators are asking for the patient's participation.
It is traditionally considered that the development of Latent Tuberculosis Infection (LTBI) is due to the M. tuberculosis ability to develop a dormancy state within well-structured lesions (granulomas), which can remain in the lung of the host even for life. A new original hypothesis has been developed in the Experimental Tuberculosis Unit based on scientific evidence that take into account the idea that a lesion cannot be held forever, because the host tends to remove any lesion in order to rebuild the original parenchyma, in a healing process. Even if M. tuberculosis can remain in a dormant/non-replicating state for a long period, this is an important but not sufficient factor to explain the LTBI. The Dynamic Hypothesis tries to explain the existence of LTBI in spite of the healing process that could remove it by a constant reinfection of the host's tissue. While the "Static" view defends the induction of active TB after the reactivation of the bacilli from and old lesion; while the "Dynamic" view wants to demonstrate that there is a constant induction of new granulomas. In case one of these new lesions takes place in the upper lobe privileged zone, the possibility to induce a cavity would appear, developing an active Tuberculosis (TB).
It is traditionally considered that someone with a positive tuberculin skin test (TST) (and/or positive result in Cell Interferon-Gamma Release Assay (TIGRA), depending on the different countries' guidelines) is infected but not ill when the absence of lesions is demonstrated in a thorax X-Ray assay. Even though, the experiences described in literature using cows and pigs as animal models for the study of LTBI demonstrate the presence of this kind of lesion in the animals, even too small to be detected by X-Ray assay, which would suggest they also could happen in human LTBI. Nowadays, the High Resolution Scanners (HR TC) offer the possibility of detecting any lesion approximately 1 mm in diameter, so the investigators plan to use this technique to screen people already infected by M. tuberculosis (but not ill, following the Diagnosis Standard Guidelines). Additional pathological analysis of resected and post-mortem tissues will provide lesion-based profiles of humans infected with tuberculosis.
Apply the information of NAT2 genotyping into the re-challenge protocol of INH titration in patients with anti-TB medication induced hepatitis.
The primary objective of the study is to evaluate the efficacy of oral Zinc administration in new smear positive pulmonary tuberculosis patients. Evidence is available suggesting that zinc deficiency rapidly diminishes antibody- and cell-mediated immune responses in both humans and animals and renders the individual susceptible to a variety of pathogens. This micronutrient has also been found to be useful in the treatment of lung tuberculosis in limited number of patients. We are conducting this study in category-I patients (As per World Health Organization, Geneva classification of tuberculosis) having lung tuberculosis to see the efficacy and also to see any change in the immunological parameters.