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multi drug resistant tuberculosis

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https://www.readbyqxmd.com/read/28106753/naphthalimides-selectively-inhibit-the-activity-of-bacterial-replicative-dna-ligases-and-display-bactericidal-effects-against-tubercle-bacilli
#1
Malgorzata Korycka-Machala, Marcin Nowosielski, Aneta Kuron, Sebastian Rykowski, Agnieszka Olejniczak, Marcin Hoffmann, Jaroslaw Dziadek
The DNA ligases, enzymes that seal breaks in the backbones of DNA, are essential for all organisms, however bacterial ligases essential for DNA replication use β-nicotinamide adenine dinucleotide as their co-factor, whereas those that are essential in eukaryotes and viruses use adenosine-5'-triphosphate. This fact leads to the conclusion that NAD⁺-dependent DNA ligases in bacteria could be targeted by their co-factor specific inhibitors. The development of novel alternative medical strategies, including new drugs, are a top priority focus areas for tuberculosis research due to an increase in the number of multi-drug resistant as well as totally drug resistant tubercle bacilli strains...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28100602/find-tuberculosis-strain-bank-a-resource-for-researchers-and-developers-working-on-tests-to-detect-mycobacterium-tuberculosis-and-related-drug-resistance
#2
Belay Tessema, Pamela Nabeta, Eloise Valli, Audrey Albertini, Jimena Collantes, Nguyen Huu Lan, Elena Romancenco, Nestani Tukavdze, Claudia M Denkinger, David L Dolinger
BACKGROUND: The spread of multidrug-resistant tuberculosis and extensively drug-resistant TB hampers the global efforts in the fight against tuberculosis. To enhance the development and evaluation of diagnostic tests quickly and efficiently, well characterized strains and samples from drug resistant tuberculosis patients are necessary. In this project, FIND has focused on the collection, characterization and storage of such well-characterized reference materials and to make them available to researchers and developers...
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28100438/high-dose-rifampicin-moxifloxacin-and-sq109-for-treating-tuberculosis-a-multi-arm-multi-stage-randomised-controlled-trial
#3
Martin J Boeree, Norbert Heinrich, Rob Aarnoutse, Andreas H Diacon, Rodney Dawson, Sunita Rehal, Gibson S Kibiki, Gavin Churchyard, Ian Sanne, Nyanda E Ntinginya, Lilian T Minja, Robert D Hunt, Salome Charalambous, Madeleine Hanekom, Hadija H Semvua, Stellah G Mpagama, Christina Manyama, Bariki Mtafya, Klaus Reither, Robert S Wallis, Amour Venter, Kim Narunsky, Anka Mekota, Sonja Henne, Angela Colbers, Georgette Plemper van Balen, Stephen H Gillespie, Patrick P J Phillips, Michael Hoelscher
BACKGROUND: Tuberculosis is the world's leading infectious disease killer. We aimed to identify shorter, safer drug regimens for the treatment of tuberculosis. METHODS: We did a randomised controlled, open-label trial with a multi-arm, multi-stage design. The trial was done in seven sites in South Africa and Tanzania, including hospitals, health centres, and clinical trial centres. Patients with newly diagnosed, rifampicin-sensitive, previously untreated pulmonary tuberculosis were randomly assigned in a 1:1:1:1:2 ratio to receive (all orally) either 35 mg/kg rifampicin per day with 15-20 mg/kg ethambutol, 20 mg/kg rifampicin per day with 400 mg moxifloxacin, 20 mg/kg rifampicin per day with 300 mg SQ109, 10 mg/kg rifampicin per day with 300 mg SQ109, or a daily standard control regimen (10 mg/kg rifampicin, 5 mg/kg isoniazid, 25 mg/kg pyrazinamide, and 15-20 mg/kg ethambutol)...
January 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28099475/development-of-a-patient-centred-psychosocial-support-intervention-for-multi-drug-resistant-tuberculosis-mdr-tb-care-in-nepal
#4
Sudeepa Khanal, Helen Elsey, Rebecca King, Sushil C Baral, Bharat Raj Bhatta, James N Newell
Multi-drug-resistant tuberculosis (MDR-TB) poses a major threat to public health worldwide, particularly in low-income countries. The current long (20 month) and arduous treatment regime uses powerful drugs with side-effects that include mental ill-health. It has a high loss-to-follow-up (25%) and higher case fatality and lower cure-rates than those with drug sensitive tuberculosis (TB). While some national TB programmes provide small financial allowances to patients, other aspects of psychosocial ill-health, including iatrogenic ones, are not routinely assessed or addressed...
2017: PloS One
https://www.readbyqxmd.com/read/28098814/thioridazine-a-non-antibiotic-drug-highly-effective-in-combination-with-first-line-anti-tuberculosis-drugs-against-any-form-of-antibiotic-resistance-of-mycobacterium-tuberculosis-due-to-its-multi-mechanisms-of-action
#5
REVIEW
Leonard Amaral, Miguel Viveiros
This review presents the evidence that supports the use of thioridazine (TZ) for the therapy of a pulmonary tuberculosis infection regardless of its antibiotic resistance status. The evidence consists of in vitro and ex vivo assays that demonstrate the activity of TZ against all encountered Mycobacterium tuberculosis (Mtb) regardless of its antibiotic resistance phenotype, as well as in vivo as a therapy for mice infected with multi-drug resistant strains of Mtb, or for human subjects infected with extensively drug resistant (XDR) Mtb...
January 14, 2017: Antibiotics
https://www.readbyqxmd.com/read/28093078/treatment-outcomes-for-multidrug-resistant-tuberculosis-under-dots-plus-a-systematic-review-and-meta-analysis-of-published-studies
#6
Kelemu Tilahun Kibret, Yonatan Moges, Peter Memiah, Sibhatu Biadgilign
BACKGROUND: Anti-tuberculosis drug resistance is a major public health problem that threatens the progress made in tuberculosis care and control worldwide. Treatment success rates of multidrug-resistant tuberculosis (MDR-TB) is a key issue that cannot be ignored. There is a paucity of evidence that assessed studies on the treatment of MDR-TB, which focus on the effectiveness of the directly observed treatment, short-course (DOTS)-Plus program. Therefore, it is crucial to assess and summarize the overall treatment outcomes for MDR-TB patients enrolled in the DOTS-Plus program in recent years...
January 17, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28088237/association-between-diabetes-mellitus-and-multi-drug-resistant-tuberculosis-a-protocol-for-a-systematic-review-and-meta-analysis
#7
Balewgizie Sileshi Tegegne, Tesfa Dejenie Habtewold, Melkamu Merid Mengesha, Johannes G M Burgerhof
INTRODUCTION: Multi-drug-resistant tuberculosis (MDR-TB) has emerged as a challenge to global tuberculosis (TB) control and remains a major public health concern in many countries. Diabetes mellitus (DM) is an increasingly recognized comorbidity that can both accelerate TB disease and complicate its treatment. The aim of this study is to summarize available evidence on the association of DM and MDR-TB among TB patients and to provide a pooled estimate of risks. METHODS: All studies published in English before October 2016 will be searched using comprehensive search strings through PubMed, EMBASE, Web of Science, and WHO Global Health Library databases which have reported the association of DM and MDR-TB in adults with TB (age > =15)...
January 14, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28087649/identification-of-unique-essential-proteins-from-a-m-tuberculosis-f15-lam4-kzn-phage-secretome-library
#8
Thamsanqa Emmanuel Chiliza, Manormoney Pillay, Balakrishna Pillay
Mycobacterium tuberculosis (Mtb) is the causative agent of tuberculosis disease (TB), the leading cause of death from bacterial infection worldwide. Although treatable, the resurgence of multi- and extensively-drug resistance TB is a major setback for the fight against TB globally. Consequently, there is an urgent need for new Mtb derived biomarkers for use in the design of new drugs and rapid point-of-care diagnostic or prognostic tools for management of TB transmission. Therefore, the present study aimed to identify unique Mtb secreted proteins from the extensively drug resistant Mtb F15/LAM4/KZN phage secretome library...
January 12, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28069654/reduced-chance-of-hearing-loss-associated-with-therapeutic-drug-monitoring-of-aminoglycosides-in-the-treatment-of-multidrug-resistant-tuberculosis
#9
R van Altena, J A Dijkstra, M E van der Meer, J F Borjas Howard, J G W Kosterink, D van Soolingen, T S van der Werf, J W C Alffenaar
Hearing loss and nephrotoxicity are associated with prolonged treatment duration and higher dosage of amikacin and kanamycin. In our Tuberculosis Center, we have employed therapeutic drug monitoring (TDM) targeting pre-set pharmacokinetic/pharmacodynamic (PK/PD) surrogate endpoints in an attempt to maintain efficacy while preventing (oto-)toxicity. To evaluate this strategy, we retrospectively evaluated medical charts of TB patients treated with amikacin or kanamycin in the period 2000 - 2012.Patients with culture-confirmed multi- or extensively drug resistant tuberculosis (MDR/XDR-TB) receiving amikacin or kanamycin as part of their TB treatment for at least 3 days were eligible for inclusion in this retrospective study...
January 9, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28063922/efficacy-and-safety-of-a-four-drug-fixed-dose-combination-regimen-versus-separate-drugs-for-treatment-of-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#10
REVIEW
Glaura C Lima, Emilia V Silva, Pérola de O Magalhães, Janeth S Naves
INTRODUCTION: Tuberculosis, particularly multi-drug-resistant tuberculosis, is a major cause of morbidity and mortality worldwide. To the best of our knowledge, however, no study to date has assessed the combined use of the four available drugs for tuberculosis treatment, which is an issue of great clinical relevance. OBJECTIVE: To determine whether the four-drug fixed-dose combination is safer or more effective than separate drugs for treatment of pulmonary tuberculosis...
December 23, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28061948/levels-of-microrna-mir-16-and-mir-155-are-altered-in-serum-of-patients-with-tuberculosis-and-associate-with-responses-to-therapy
#11
Vishal Wagh, Anant Urhekar, Deepak Modi
Identification of blood biomarkers that can be useful for predicting Mycobacterium tuberculosis (M.TB) infection, effect of therapy and Multi Drug Resistant (MDR) TB infected individuals is clinically useful for combating tuberculosis epidemic. In this study, we have evaluated the levels of selected miRNAs in serum of TB and MDR TB patients. In addition, we have studied their levels in serum of patients post-therapy. The levels of 4-miRNAs (miR-16, miR-29a, miR-125b and miR-155) were measured in 30 newly diagnosed TB patients, 19 Multi Drug Resistant (MDR) TB patients, 10 patients who completed TB therapy and were TB negative...
January 2017: Tuberculosis
https://www.readbyqxmd.com/read/28050363/first-line-anti-tb-drug-resistance-in-an-urban-area-of-odisha-india
#12
Dasarathi Das, Prakasini Satapathy, Biswanath Murmu
INTRODUCTION: Drug resistance is a major cause for increasing the global burden of Tuberculosis (TB). However in countries with larger geographical areas and different climatic conditions like India the prevalence of drug resistance varies from place to place. Information on anti-TB drug resistance patterns particularly among newly diagnosed cases is crucial for planning an effective TB control program. AIM: To determine the prevalence of resistance against first line anti-TB drugs and Multi Drug Resistance (MDR) in Mycobacterium tuberculosis isolates...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28045934/priority-setting-for-novel-drug-regimens-to-treat-tuberculosis-an-epidemiologic-model
#13
Emily A Kendall, Sourya Shrestha, Ted Cohen, Eric Nuermberger, Kelly E Dooley, Lice Gonzalez-Angulo, Gavin J Churchyard, Payam Nahid, Michael L Rich, Cathy Bansbach, Thomas Forissier, Christian Lienhardt, David W Dowdy
BACKGROUND: Novel drug regimens are needed for tuberculosis (TB) treatment. New regimens aim to improve on characteristics such as duration, efficacy, and safety profile, but no single regimen is likely to be ideal in all respects. By linking these regimen characteristics to a novel regimen's ability to reduce TB incidence and mortality, we sought to prioritize regimen characteristics from a population-level perspective. METHODS AND FINDINGS: We developed a dynamic transmission model of multi-strain TB epidemics in hypothetical populations reflective of the epidemiological situations in India (primary analysis), South Africa, the Philippines, and Brazil...
January 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28043631/the-first-population-structure-and-comparative-genomics-analysis-of-mycobacterium-africanum-strains-from-ghana-reveals-higher-diversity-of-lineage-5
#14
Isaac D Otchere, Simon R Harris, Sanches L Busso, Adwoa Asante-Poku, Stephen Osei-Wusu, Kwadwo Koram, Julian Parkhill, Sebastien Gagneux, Dorothy Yeboah-Manu
OBJECTIVE/BACKGROUND: Mycobacterium africanum (MAF) remains an important TB causing pathogen in West Africa; however, little is known about its population structure and actual diversity which may have implications for diagnostics and vaccines. We carried out comparative genomics analysis of candidate Mycobacterium tuberculosis (MTB) and MAF using whole genome sequencing. METHODS: Clinical MTB complex strains (n=187) comprising L4 (n=22), L5 (n=126), and L6 (n=39) isolated over 8years from Ghana were whole genome sequenced...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043618/pathogenesis-of-multi-drug-resistant-and-extensively-drug-resistant-tuberculosis-as-a-determinant-of-future-treatment-success
#15
Faramarz Valafar
No abstract text is available yet for this article.
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043602/screening-new-tuberculosis-patients-in-mali-for-rifampicin-resistance-at-2months
#16
Bassirou Diarra, Aissata B Cissé, Ousmane Kodio, Moumine Sanogo, Bocar Baya, Antieme C G Togo, Amadou Somboro, Mohamed Tolofoudié, Boureima Degoga, Marie Laure Keita, Fatimata Diallo, Natacha Nguiakam, Gagni Coulibaly, Sidy Bane, Yeya Dit Sadio Sarro, Seydou Doumbia, Robert Leo Murphy, Souleymane Diallo, Bouke C Dejong
OBJECTIVE/BACKGROUND: The recent call for universal drug susceptibility testing (DST) for all tuberculosis (TB) patients will be difficult to meet in settings where Xpert rollout is limited, such as low prevalence of HIV and Multi-drug Resistant Tuberculosis (MDR) settings. As recommended by World Health Organization (WHO) guidelines, the success of TB treatment is measured by Ziehl-Neelsen (ZN) microscopy or auramine-rhodamine fluorescent microscopy (FM) on sputum, in which conversion to negative smear at 2months (M) is an important predictor of treatment success, defined as a negative smear at 5M...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043564/trfa1-gene-in-clinical-isolates-of-mycobacterium-tuberculosis
#17
Azam Ahmadi, Mohammad Arjomandzadegan, Masoomeh Saberpoor, Mona Moghadasi
OBJECTIVE/BACKGROUND: The incidence of resistant strains of Mycobacterium tuberculosis (MTB), including multi-drug resistant, extensively drug resistant, or totally drug resistant, is one of the major problems of health policies worldwide. The accumulation of mutations causes multi-drug resistant strains. Mycobacterium abscessus has a plasmid called pMab2401 containing the trfA1 gene in its integron part. The aim of the present study was to investigate the possible existence of the trfA1 gene in clinical strains of MTB for the first time...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043521/interleukin-10-gene-polymorphism-is-associated-with-multi-drug-resistant-tuberculosis-during-the-intensive-phase-of-standard-chemotherapy
#18
Butov Dmytro, Kuzhko Mykhailo, Butova Tetyana Kuzhko
OBJECTIVE/BACKGROUND: To study whether interleukin (IL)-10 gene polymorphism is associated with multi-drug resistant tuberculosis (MDR TB) during the intensive phase of standard chemotherapy. METHODS: The study comprised 170 individuals in Kharkiv region of Ukraine including 74 patients with pulmonary MDR TB (Group 1), 66 patients without MDR TB (Group 2), and 30 healthy donors (Group 3). Serum level of IL-10 was evaluated by enzyme-linked immunosorbent assay (pg/L)...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043500/design-and-development-of-novel-inhibitors-for-the-treatment-of-latent-tuberculosis
#19
Rudraraju Srilakshmi Reshma, Perumal Yogeeswari, Dharmarajan Sriram
OBJECTIVE/BACKGROUND: "The captain of all these men of death", is the apt sobriquet for the age-old disease tuberculosis (TB). Despite the availability of many drugs, cases of increasing resistance in the forms of multi-drug and extensively drug-resistant TB and persistence [characteristic of Mycobacterium tuberculosis (MTB)] make the eradication of TB a nightmare. Approval of bedaquiline by the Food and Drug Administration focused attention on quinoline scaffolds for development of new anti-TB agents...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043487/the-difficulties-of-childhood-tuberculosis-diagnosis
#20
A M Djouahra, M Ifticene, D Yala, F Boulahbal
AIMS AND OBJECTIVES: The WHO estimate that 8.8millions new cases of tuberculosis occurred in 2010, (between 8.5 and 9.2millions) linked to 1.45millions death cases. The load of children tuberculosis is estimated at 10-15 per cent of the total load. In 2014 more than one million children have developed the disease. The children just as adults are exposed to contract and develop the multi resistant forms of the tuberculosis, constituting a major issue for the disease control. The children less than 5years of age are the most exposed to present the most serious and more often deadly forms of the illness...
December 2016: International Journal of Mycobacteriology
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