Articles tagged with Tuberculosis
A new TB vaccine candidate has shown promising results in animal studies, inducing a robust T-cell response that could protect against the disease. The vaccine, developed using a closely related species of bacteria, proved both potent and safe, with vaccinated mice living up to 135 days versus 54 days for control mice.
Researchers have developed a new method to diagnose tuberculosis (TB) that is faster and cheaper than current methods. The method uses microcalorimeters to detect the growth of Mycobacterium tuberculosis bacteria, allowing for rapid diagnosis and antibiotic susceptibility testing.
Researchers have discovered how TB drug pyrazinamide effectively shortens the required duration of TB therapy. The drug acts on latent TB bacteria that exist in an acidic environment, converting to its active form to bind and block vital protein RpsA, ultimately killing the bacteria.
Researchers at Johns Hopkins Bloomberg School of Public Health have decoded the workings of Pyrazinamide (PZA), a critical TB drug. PZA inhibits trans-translation, a process essential for cell survival under stress conditions, making it effective against non-growing bacteria called persisters.
Researchers found that commercial blood serum antibody tests are not accurate or cost-effective for diagnosing active TB, leading to more false-positive diagnoses and secondary infections. The World Health Organization has recommended against using these tests in the diagnosis of active TB.
Commercial serological tests used to detect active TB do not accurately diagnose the disease, often producing false positives or negatives. In contrast, sputum smear microscopy is found to be more cost-effective and should take priority in tuberculosis control efforts.
A new urine test uses a portable 'electronic nose' to detect tuberculosis (TB) by analyzing volatile organic compounds (VOCs) in patient urine. The test shows promise as a fast and inexpensive diagnostic tool for TB, which affects millions worldwide.
The World Health Organization has released updated guidelines for managing drug-resistant tuberculosis, highlighting the need for more research to improve disease management. Key recommendations include wider use of rapid drug susceptibility testing and ambulatory models of care.
Researchers found that individuals lacking TLR1 proteins are more susceptible to tuberculosis, leading to decreased immune function. The study suggests a potential approach for personalized therapy and prioritizing drug treatment in developing countries.
A new automated DNA test for tuberculosis can significantly increase detection rates, especially in HIV-positive patients. However, economic challenges and implications of the diagnostic tests need exploration.
A new TB test, Xpert MTB/RIF, has been shown to be more sensitive and faster than conventional smear microscopy for diagnosing tuberculosis in children. The test detected twice as many cases among children under 15 and identified all confirmed TB cases in children with HIV.
A new analysis confirms that localized reactive badger culling increases the risk of infection in nearby herds. The study found that the presence of any reactive culling activity within one kilometre of a herd more than doubled the risk of bovine TB, even after adjusting for the number of confirmed outbreaks nearby.
A comprehensive review of respiratory illnesses in the Middle East highlights diverse conditions such as pulmonary tuberculosis, bronchial diseases, and chest traumas. The study attributes these disorders to environmental factors, infections, and unique cultural conditions.
Researchers developed alternative smear collection methods that are more convenient for patients, yet maintain the same level of accuracy for diagnosis. The findings suggest that a single patient visit could be sufficient to diagnose pulmonary tuberculosis, improving access to treatment, particularly in poor countries.
A new Cardiff University study aims to develop a vaccine patch targeting immune cells in the skin to boost the body's response and prevent HIV transmission. The research uses microneedles to modulate dendritic cells, increasing their potency and inducing immunity.
A new combination therapy of rifapentine and isoniazid, taken once weekly for three months, has been shown to be as effective as traditional daily treatment in preventing latent tuberculosis in people with and without HIV. The study found that 95% of participants completed the treatment, compared to 60% or less with traditional therapy.
A new vaccine to combat tuberculosis has been shown to be safe and effective, but its introduction into the childhood immunization schedule is complicated by concerns over immune response. The study's findings have important implications for designing the most effective immunisation schedules for children.
A recent study published in The Journal of Nuclear Medicine found that PET scans can help determine earlier if treatment for tuberculosis is working or if the disease is multidrug-resistant. This technology has the potential to become a valuable clinical adjunct to genotypic and phenotypic tests, improving patient outcomes.
Researchers at UTHealth found diabetics are three to five times more likely to contract TB than non-diabetics, with 25% of cases attributed to diabetes. Improved diabetes prevention and management, including screening for TB, can benefit both diseases.
A recent study found that face masks worn by TB patients reduced transmission rates to non-infected patients by 50%. This simple intervention may be particularly effective in areas with limited resources and widespread TB. The results suggest that face masks could be a valuable addition to comprehensive TB infection control programs.
Researchers have identified a stem cell population that can reverse nerve cell loss in individuals with Parkinson disease. Protein-based human induced pluripotent stem (iPS) cells were found to efficiently generate functional dopamine neurons and treat a rat model of the disease. These findings suggest a potential new treatment approac...
A McGill research team identified two distinct disease-causing mutations in the IRF8 gene, which causes severe immunodeficiency and disseminated BCG infection. These findings led to a successful stem cell transplant that saved the life of a three-month-old baby girl.
The study found that the private market for TB drugs is substantial and poses a significant risk of drug misuse and resistance. In many countries, private sector sales account for nearly equal amounts of treatment as the public sector, but often exceed international guidelines.
Scientists have identified MMP-1 as a key enzyme responsible for destroying lung tissue in tuberculosis, leading to the development of drugs that can prevent this damage. The findings suggest that existing MMP inhibitor drugs may be effective in reducing deaths from TB.
A team of researchers has identified a key role for the protein fibulin-5 in preventing pelvic organ prolapse (POP) in mice. Fibulin-5 prevents POP by facilitating the assembly of normal elastic fibers and inhibiting the activity of MMP9, a protein that degrades these fibers. Increased levels of MMP-9 were found in vaginal tissue sampl...
A study finds that the UK's current tuberculosis screening policy for immigrants is missing 70% of imported latent infections. Implementing a broader screening program could identify 92% of infected immigrants and reduce future cases of active tuberculosis while remaining cost-effective.
A new study published in The Lancet Infectious Diseases found that UK immigration screening procedures fail to detect over 70% of latent tuberculosis (TB) cases, with better selection of immigrants to screen increasing detection rates to over 90%. Treating people at an early stage can prevent them from developing active TB and becoming...
A new TB test has been shown to detect tuberculosis and multi-drug resistant TB with high sensitivity and specificity in resource-poor settings. The test can rapidly diagnose those infected, including those with MDR-TB, and reduce delays in diagnosis and treatment.
Researchers found a link between the fur trade routes and modern-day patterns of tuberculosis. The particular TB strain was introduced to remote Aboriginal populations in Canada by French Canadian fur traders during this period.
A new study published in JAMA found that a 4-drug fixed-dose regimen is noninferior to separate drug treatment for tuberculosis, with 93.9% of patients in the FDC group achieving favorable outcomes. This regimen simplifies treatment and reduces the risk of drug resistance.
A study by Stanford scientists found a specific TB strain was unintentionally spread among indigenous peoples of western Canada, leading to epidemics decades later. Poor living conditions and malnutrition on reservations contributed to the outbreak.
Researchers have developed an innovative diagnostic algorithm using a protein named HBHA in combination with IGRA, allowing for rapid identification of those infected but not yet showing symptoms. The new test has the potential to improve TB diagnosis and control strategies worldwide.
The BCG World Atlas offers detailed information on current and past vaccination policies across over 180 countries. This database aims to improve the care of patients with tuberculosis (TB) by providing useful resources for clinicians, policymakers, and researchers.
The BCG World Atlas is a first-of-its-kind resource providing detailed information on current and past TB vaccination policies and practices across 180+ countries. Clinicians can use this atlas to inform diagnosis and treatment decisions, particularly for foreign-born adults with unclear vaccination histories.
Researchers identified a protein called EspC that triggers a stronger immune response in people infected with TB bacteria, making it a promising new vaccine candidate. The protein could also be used to improve diagnosis of TB and underpin next-generation diagnostic blood tests.
Increasing rates of drug-resistant TB pose a significant threat to global progress in controlling the disease. The growing burden of TB is also linked to other risk factors like smoking and diabetes, which increase the risk of contracting the disease by two- and three-fold, respectively.
A study in Uganda found that the standard TB retreatment regimen has low treatment response rates, particularly among HIV-infected and multi-drug resistant TB patients. Poor adherence, HIV infection, age, and duration of symptoms were associated with unsuccessful outcomes.
A study published in PLoS Medicine found that re-treatment TB regimens are failing in low- and middle-income settings, with up to one-fourth of patients experiencing relapse or death. Researchers emphasize the need for tailored treatments depending on HIV status and improved access to antiretroviral therapies.
Researchers found that multi-drug tolerant organisms can form within days of infection in zebrafish and grow inside host macrophages, helping to promote the continuation of TB. Inexpensive drugs like verapamil may block tolerance mechanisms, potentially shortening treatment duration.
Researchers used whole genome sequencing to analyze TB bacterial samples from 41 patients. The study found that the outbreak was caused by bursts of transmission, rather than chains of infection.
Researchers at VIB and Ghent University have developed a new tuberculosis vaccine that affords better protection against the disease by triggering an immune reaction in the body. The new vaccine works differently from existing vaccines and acquires its extra protective value by emitting signals that provoke inflammation.
A study by St. Michael's Hospital found that one in five homeless people with tuberculosis die within a year of diagnosis, emphasizing the need for enhanced prevention and treatment strategies.
Scientists at EMBL identified a multi-tasking protein PriA from Mycobacterium tuberculosis that catalyzes reactions on two different molecules. This finding presents new opportunities for developing organism-specific drugs, targeting the pathogen but leaving other beneficial microorganisms untouched.
A recent outbreak of tuberculosis in Nunavut, with a population infection rate 62 times the Canadian average, underscores the need for rebuilding trust in public health. The territory's historical legacy of mistreating patients and lack of consistent screening measures have hindered control efforts.
A new study reveals that standardized medication dosages for children with tuberculosis are too low and may not be effective due to individual variations in response. The researchers used computer simulations to determine how a child's body handles the medication, highlighting the need for personalized treatment plans.
Researchers combined two proteins and a stress response protein to create a new TB vaccine strategy that provided stronger, more long-lasting protection than the current BCG vaccine. The study found that this multistage vaccine controlled reactivation of latent infection and reduced Mtb levels in the lungs more effectively.
A simple, standardized TB screening rule has been developed for resource-constrained settings to identify people living with HIV who need further investigation for TB disease. The absence of common symptoms such as cough, fever, and night sweats can be used to identify individuals with a low probability of having TB disease.
Researchers studied TB detection methods in western Kenya and found that passive case finding is inadequate due to the high prevalence of HIV. Intensive methods like sputum culture are needed to diagnose TB earlier and more accurately, especially among men and those with prior TB treatment.
A new study published in CMAJ found that people over 65 undergoing latent tuberculosis infection therapy are at a higher risk of severe adverse reactions requiring hospitalization. The study provides age-stratified estimates of the risk of these events, accounting for comorbidities and similar health events in the general population.
New research shows vitamin D can speed up antibiotic treatment of tuberculosis (TB), clearing bacteria from the lungs in just 5 weeks for certain patients. Vitamin D deficiency is a common problem among TB patients, and those with a specific genetic type of vitamin D receptor responded better to supplementation.
A new study found that supplementing antibiotics with high-dose vitamin D can significantly reduce the time needed for TB bacteria to clear from sputum culture by almost a week in patients with specific genetic profiles. The treatment improved response in those with the tt genotype of the TaqI vitamin D receptor polymorphism.
A China Medical University study shows a 10.9-fold increased risk of lung cancer among people with tuberculosis compared to those without the disease. The study followed over 1 million patients and found a mortality rate of 51.1 per 10,000 person-years in the tuberculosis group, nearly six times that of non-tuberculosis patients.
The Lancet's Editorial in 1911 highlighted issues such as tuberculosis, occupational health, and homoeopathy, which remain relevant today. The journal has made significant advances in medicine since then, including modernizing medical education.
A systematic review found that prison TB spread significantly increases the incidence of TB in the general population. The average incidence of TB in prisons was 23 times higher than in the general population.
The UK is experiencing a resurgence of tuberculosis, with London accounting for over 40% of all TB cases. The disease is concentrated in high-risk groups, including migrants, homeless people, and prisoners. Experts call for urgent recommendations to be implemented to control the spread.
Researchers found that Mycobacterium chelonae, a common environmental bacterium, can decrease the effectiveness of the bacille Calmette-Guerin (BCG) vaccine. The study suggests that immune cells exposed to this bacterium may dampen vaccine efficacy. This discovery could lead to new, more effective vaccines against tuberculosis.
Two iron compounds have been synthesized to inhibit the growth of Mycobacterium tuberculosis in vitro. The compounds showed low toxicity in mammalian cells, making them promising candidates for treating tuberculosis and serving as hospital disinfectants.
A combination of increased domestic funding and foreign loans led to a dramatic increase in tuberculosis case finding in China. The study highlights the importance of evaluating the links between financing for health and TB control.
Researchers have developed an inhalable dry powder antibiotic targeting TB, potentially reducing treatment time from 6-12 months to under a year. The novel treatment aims to distribute antibiotics directly to lung lesions, increasing targeted doses and minimizing side effects.
Scientists identified a key enzyme in Mycobacterium tuberculosis that can be targeted for new TB treatments. Three compounds were found to inhibit the enzyme effectively, killing bacterial cells.