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Global TB

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https://www.readbyqxmd.com/read/28817723/sequence-analysis-of-the-rifampicin-resistance-determining-region-rrdr-of-rpob-gene-in-multidrug-resistance-confirmed-and-newly-diagnosed-tuberculosis-patients-of-punjab-pakistan
#1
Salma Hameed, Kartyk Moganeradj, Nasir Mahmood, Timothy D McHugh, Muhammad Nawaz Chaudhry, Catherine Arnold
Molecular screening of new patients suspected for TB could help in the effective control of TB in Pakistan as it is a high TB burden country. It will be informative to understand the prevalence of multi drug resistance for a better drug regimen management in this geographical area. The Rifampicin resistance determining region (RRDR) sequencing was used to identify mutations associated with drug resistance in DNA extracts from 130 known multidrug resistant (MDR) cultured strains and compared with mutations observed in DNA extracts directly from 86 sputum samples from consecutive newly diagnosed cases in Lahore, Pakistan...
2017: PloS One
https://www.readbyqxmd.com/read/28814276/treatment-outcomes-of-patients-with-multidrug-resistant-and-extensively-drug-resistant-tuberculosis-in-hunan-province-china
#2
Kefyalew Addis Alene, Hengzhong Yi, Kerri Viney, Emma S McBryde, Kunyun Yang, Liqiong Bai, Darren J Gray, Archie C A Clements, Zuhui Xu
BACKGROUND: The worldwide emergence of multidrug-resistant tuberculosis (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB) has posed additional challenges for global tuberculosis (TB) control efforts, as limited treatment options are available and treatment outcomes are often sub-optimal. This study determined treatment outcomes among a cohort of MDR-TB and XDR-TB patients in Hunan Province, China, and identified factors associated with poor treatment outcomes. METHODS: We conducted a retrospective study using data obtained from medical records of TB patients in Hunan Chest Hospital, and from the internet-based TB management information system managed by the Tuberculosis Control Institute of Hunan Province, for the period 2011 to 2014...
August 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28810911/outcomes-from-patients-with-presumed-drug-resistant-tuberculosis-in-five-reference-centers-in-brazil
#3
D M P Ramalho, P F C Miranda, M K Andrade, T Brígido, M P Dalcolmo, E Mesquita, C F Dias, A N Gambirasio, J Ueleres Braga, A Detjen, P P J Phillips, I Langley, P I Fujiwara, S B Squire, M M Oliveira, A L Kritski
BACKGROUND: The implementation of rapid drug susceptibility testing (DST) is a current global priority for TB control. However, data are scarce on patient-relevant outcomes for presumptive diagnosis of drug-resistant tuberculosis (pDR-TB) evaluated under field conditions in high burden countries. METHODS: Observational study of pDR-TB patients referred by primary and secondary health units. TB reference centers addressing DR-TB in five cities in Brazil. Patients age 18 years and older were eligible if pDR-TB, culture positive results for Mycobacterium tuberculosis and, if no prior DST results from another laboratory were used by a physician to start anti-TB treatment...
August 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28802398/a-mycobacterial-growth-inhibition-assay-mgia-for-bovine-tb-vaccine-development
#4
Ilaria Pepponi, Bhagwati Khatri, Rachel Tanner, Bernardo Villarreal-Ramos, Martin Vordermeier, Helen McShane
Human tuberculosis remains a significant cause of mortality and morbidity throughout the world. The global economic impact of bovine TB is considerable. An effective vaccine would be the most cost-effective way to control both epidemics, particularly in emerging economies. TB vaccine research would benefit from the identification of an immune correlate of protection with which vaccines could be gated at both preclinical and clinical levels. In-vitro mycobacterial growth inhibition assays (MGIA) are functional assays that include most aspects of the complex host immune response to mycobacteria, and they may serve as functional immune correlates for vaccine development...
September 2017: Tuberculosis
https://www.readbyqxmd.com/read/28797860/palliative-care-for-tuberculosis
#5
Stephen R Connor
In 2014, 1.5 million people died of tuberculosis (TB) worldwide including 400,000 co-infected with HIV. TB remains a major cause of death and suffering globally, in spite of the fact that it is supposed to be a curable disease. Drug resistant forms of TB have developed as a result of poor treatment compliance including multi-drug and extreme drug resistant forms that take longer to treat and have higher likelihoods of treatment failure. In 2010, at the initiation of the TB community, a partnership was formed between the WHO Stop TB Program, the Worldwide Hospice Palliative Care Alliance, and the Open Society Foundation's International Palliative Care Initiative (OSF/IPCI) to explore how to improve the ability of TB professionals to deliver palliative care to their patients...
August 7, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28794177/discovery-and-validation-of-a-six-marker-serum-protein-signature-for-the-diagnosis-of-active-pulmonary-tuberculosis
#6
Mary A De Groote, David G Sterling, Thomas Hraha, Theresa Russell, Louis S Green, Kirsten Wall, Stephan Kraemer, Rachel Ostroff, Nebojsa Janjic, Urs A Ochsner
New non-sputum biomarker tests for active tuberculosis (TB) diagnostics are of highest priority for global TB control. We performed in-depth proteomic analysis using the 4000-plex SOMAscan assay on 1470 serum samples from seven TB-endemic countries. All samples were from patients with symptoms and signs suggestive of active pulmonary TB that were systematically confirmed or ruled-out for TB by culture and clinical follow-up. HIV-coinfection was present in 34%and 22% were sputum smear-negative. Serum protein biomarkers were identified by stability selection using L1-regularized logistic regression and by Kolmogorov-Smirnov (KS) statistics...
August 9, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28793873/epidemiological-trends-and-outcomes-of-extensively-drug-resistant-tuberculosis-in-shandong-china
#7
Xiao-Chun He, Ning-Ning Tao, Yao Liu, Xian-Xin Zhang, Huai-Chen Li
BACKGROUND: Extensively Drug-Resistant (XDR) Tuberculosis (TB) has posed a great threat to global health and finance systems, especially for developing countries with high TB and Multidrug-Resistant (MDR) TB burden. METHODS: We retrospectively analyzed HIV-uninfected TB case confirmed and treated in Shandong Provincial Chest Hospital (SPCH) between January 2008 and December 2015. Unique characteristics of XDR-TB were identified; its longitudinal changes and survival were analyzed...
August 9, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28792040/splitting-a-dnazyme-enables-a-na-dependent-fret-signal-from-the-embedded-aptamer
#8
Wenhu Zhou, Jinsong Ding, Juewen Liu
Recently, a few Na(+)-specific RNA-cleaving DNAzymes have been reported, and a Na(+) aptamer was identified from the NaA43 and Ce13d DNAzymes. These DNAzymes and the embedded aptamer have been used for Na(+) detection. In this work, we studied the Na(+)-dependent folding of the Ce13d DNAzyme using fluorescence resonance energy transfer (FRET). When a FRET donor and an acceptor were respectively labeled at the ends of the DNAzyme, Na(+) failed to induce an obvious end-to-end distance change, suggesting a rigid global structure...
August 9, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28776522/an-evaluation-of-innovative-community-based-approaches-and-systematic-tuberculosis-screening-to-improve-tuberculosis-case-detection-in-ebonyi-state-nigeria
#9
Daniel C Oshi, Joachim C Omeje, Sarah N Oshi, Isaac N Alobu, Ngozi E Chukwu, Chukwuemeka Nwokocha, Obiageli F Emelumadu, Chidubem L Ogbudebe, Anthony O Meka, Kingsley N Ukwaja
BACKGROUND: National tuberculosis (TB) programmes globally rely heavily on passive case finding for detecting TB in the community as advocated by the World Health Organization (WHO). TB case detection is low in Nigeria despite improvement in TB services and coverage. METHODS: A retrospective evaluation of an active case-finding intervention utilizing community-based approaches and targeted systematic TB screening in Ebonyi State, Nigeria was done. The analysis was performed using Epi Info...
July 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28763150/pneumonia-in-the-tropics
#10
REVIEW
Tow Keang Lim, Wen Ting Siow
Pneumonia in the tropics poses a heavy disease burden. The complex interplay of climate change, human migration influences and socio-economic factors lead to changing patterns of respiratory infections in tropical climate but also increasingly in temperate countries. Tropical and poorer countries, especially South East Asia, also bear the brunt of the global tuberculosis (TB) pandemic, accounting for almost one-third of the burden. But, as human migration patterns evolve, we expect to see more TB cases in higher income as well as temperate countries, and rise in infections like scrub typhus from ecotourism activities...
August 1, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28757569/diarylethenes-display-in-vitro-anti-tb-activity-and-are-efficient-hits-targeting-the-mycobacterium-tuberculosis-hu-protein
#11
María Angélica Suarez, Jhesua Valencia, Christian Camilo Cadena, Raktim Maiti, Chandreyee Datta, Gloria Puerto, José Hipólito Isaza, Homero San Juan, Valakunja Nagaraja, Juan David Guzman
Tuberculosis continues to be a great source of concern in global health because of the large reservoir of humans infected with the bacilli and the appearance of clinical isolates resistant to a wide array of anti-tuberculosis drugs. New drugs with novel mechanisms of action on new targets are urgently required to reduce global tuberculosis burden. Mycobacterium tuberculosis nucleoid associated protein (NAP) HU has been shown to be druggable and essential for the organism's survival. In this study, four diarylethenes were synthesized using a one-pot decarboxylated Heck-coupling of coumaric acids with iodoanisoles...
July 25, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28756294/vitamin-d-cod-liver-oil-sunshine-and-phototherapy-safe-effective-and-forgotten-tools-for-treating-and-curing-tuberculosis-infections-a-comprehensive-review
#12
REVIEW
Patrick J McCullough, Douglas S Lehrer
Tuberculosis remains an epidemic throughout the world, with over 2 billion people, or more than one third of the world's population, infected with TB. In 2015, there were an estimated 10.4 million new cases of tuberculosis, and 1.8 million deaths, making TB one of the top ten causes of death worldwide. Approximately 95% of new TB cases occur in developing countries, where the costs of treatment force many patients and their families into poverty. The United Nations and the World Health Organization are working to end this global epidemic...
July 26, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28749949/2-aminoimidazoles-potentiate-%C3%A3-lactam-antimicrobial-activity-against-mycobacterium-tuberculosis-by-reducing-%C3%A3-lactamase-secretion-and-increasing-cell-envelope-permeability
#13
Albert B Jeon, Andrés Obregón-Henao, David F Ackart, Brendan K Podell, Juan M Belardinelli, Mary Jackson, Tuan V Nguyen, Meghan S Blackledge, Roberta J Melander, Christian Melander, Benjamin K Johnson, Robert B Abramovitch, Randall J Basaraba
There is an urgent need to develop new drug treatment strategies to control the global spread of drug-sensitive and multidrug-resistant Mycobacterium tuberculosis (M. tuberculosis). The ß-lactam class of antibiotics is among the safest and most widely prescribed antibiotics, but they are not effective against M. tuberculosis due to intrinsic resistance. This study shows that 2-aminoimidazole (2-AI)-based small molecules potentiate ß-lactam antibiotics against M. tuberculosis. Active 2-AI compounds significantly reduced the minimal inhibitory and bactericidal concentrations of ß-lactams by increasing M...
2017: PloS One
https://www.readbyqxmd.com/read/28749390/extensively-drug-resistant-tuberculosis-in-india-current-evidence-on-diagnosis-management
#14
REVIEW
Rajendra Prasad, Abhijeet Singh, Viswesvaran Balasubramanian, Nikhil Gupta
Emergence of extensively drug-resistant tuberculosis (XDR-TB) has significantly threatened to jeopardize global efforts to control TB, especially in HIV endemic regions. XDR-TB is mainly an iatrogenically created issue, and understanding the epidemiological and risk factors associated with it is of paramount importance in curbing this menace. Emergence of this deadly phenomenon can be prevented by prompt diagnosis and effective treatment with second-line drugs in rifampicin-resistant TB (RR-TB) as well as multidrug-resistant TB (MDR-TB) patients...
March 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28744263/recombinant-invasive-lactococcus-lactis-carrying-a-dna-vaccine-coding-the-ag85a-antigen-increases-inf-%C3%AE-il-6-and-tnf-%C3%AE-cytokines-after-intranasal-immunization
#15
Pamela Mancha-Agresti, Camila Prosperi de Castro, Janete S C Dos Santos, Maíra A Araujo, Vanessa B Pereira, Jean G LeBlanc, Sophie Y Leclercq, Vasco Azevedo
Tuberculosis (TB) remains a major threat throughout the world and in 2015 it caused the death of 1.4 million people. The Bacillus Calmette-Guérin is the only existing vaccine against this ancient disease; however, it does not provide complete protection in adults. New vaccines against TB are eminently a global priority. The use of bacteria as vehicles for delivery of vaccine plasmids is a promising vaccination strategy. In this study, we evaluated the use of, an engineered invasive Lactococcus lactis (expressing Fibronectin-Binding Protein A from Staphylococcus aureus) for the delivery of DNA plasmid to host cells, especially to the mucosal site as a new DNA vaccine against tuberculosis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28744149/determinants-of-multidrug-resistant-tuberculosis-in-addis-ababa-ethiopia
#16
Demelash Assefa, Berhanu Seyoum, Lemessa Oljira
Multidrug-resistant tuberculosis (MDR-TB) has been jeopardizing the global effort to prevent and control tuberculosis (TB). However, data on MDR-TB in Ethiopia in general, and in our study area in particular, are very scarce. The aim of this study was to identify determinants of MDR-TB in a cohort of patients managed in two referral hospitals of Addis Ababa, Ethiopia, between April 1, 2013 and June 30, 2013. A health facility-based case-control study was conducted. A total of 710 TB patients (229 confirmed MDR-TB and 481 drug susceptible TB patients) were enrolled in this study...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28743645/extensively-drug-resistant-tuberculosis-in-morocco
#17
Wifak Ennassiri, Sanae Jaouhari, Wafa Cherki, Reda Charof, Abdelkarim Filali-Maltouf, Ouafae Lahlou
OBJECTIVES: Extensively drug-resistant tuberculosis (XDR-TB) has recently been identified as a major global health threat. The aim of the study was to evaluate the XDR-TB presence within TB isolates in Morocco, and its association with the demographic, clinical and epidemiological features. METHODS: A total of 524 patients from the National Tuberculosis Reference Laboratory, representative of all the geographic regions, were subject to first-line drug susceptibility testing (DST)...
July 22, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28743081/mycobacterium-tuberculosis-ppe44-rv2770c-is-involved-in-response-to-multiple-stresses-and-promotes-the-macrophage-expression-of-il-12-p40-and-il-6-via-the-p38-erk-and-nf-%C3%AE%C2%BAb-signaling-axis
#18
Zhaoxiao Yu, Chenhui Zhang, Mingliang Zhou, Qiming Li, Hui Li, Wei Duan, Xue Li, Yonghong Feng, Jianping Xie
Tuberculosis (TB), caused by Mycobacterium tuberculosis, remains a formidable threat to global public health. The successful intracellular persistence of M. tuberculosis significantly contributes to the intractability of tuberculosis. Proline-glutamic acid (PE) and proline-proline-glutamic acid (PPE) are mycobacterial exclusive protein families that widely reported to be involved in the bacterial virulence, physiology and interaction with host. Rv2770c (PPE44), a predicted virulence factor, was up-regulated upon the infected guinea pig lungs...
July 22, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28742838/identification-of-novel-antigen-candidates-for-a-tuberculosis-vaccine-in-the-adult-zebrafish-danio-rerio
#19
Henna Myllymäki, Mirja Niskanen, Kaisa Ester Oksanen, Eleanor Sherwood, Maarit Ahava, Mataleena Parikka, Mika Rämet
Tuberculosis (TB) remains a major global health challenge and the development of a better vaccine takes center stage in fighting the disease. For this purpose, animal models that are capable of replicating the course of the disease and are suitable for the early-stage screening of vaccine candidates are needed. A Mycobacterium marinum infection in adult zebrafish resembles human TB. Here, we present a pre-clinical screen for a DNA-based tuberculosis vaccine in the adult zebrafish using an M. marinum infection model...
2017: PloS One
https://www.readbyqxmd.com/read/28739225/distribution-scheme-of-anti-tuberculosis-drug-resistance-among-hiv-patients-in-a-referral-center-over-10-years
#20
Parvaneh Baghaei, Payam Tabarsi, Afshin Moniri, Majid Marjani, Parissa Farnia, Sayena Jabbehdari, Ali Akbar Velayati
OBJECTIVES: Anti-tuberculosis (TB) drug resistance is increasing among TB patients globally, particularly, in those that are human immunodeficiency virus (HIV) positive. The aim of this study was to determine the pattern of anti-TB drug resistance in these patients in an effort to improve successful treatment outcomes with a proper regimen. METHODS: A cross-sectional study was conducted on adult TB-HIV patients from 2005 to 2015. The pattern of anti-TB drugs resistance was evaluated among HIV positive patients with and without a history of TB treatment...
July 21, 2017: Journal of Global Antimicrobial Resistance
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