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https://www.readbyqxmd.com/read/28110400/multiplex-pcr-as-a-novel-method-in-the-diagnosis-of-spinal-tuberculosis-a-pilot-study
#1
Kusum Sharma, Rajesh Kumar Meena, Ashish Aggarwal, Rajesh Chhabra
BACKGROUND: Establishment of a reliable and rapid diagnosis is of paramount importance in spinal tuberculosis. The available gadgetry of investigations, such as AFB smear, culture of Mycobacterium tuberculosis, and Uniplex PCR, suffers from a lack of adequate sensitivity and/or a lack of rapidity. Therefore, many times a diagnosis is made either very late in the disease process or sometimes empirical therapy has to be started because a definite diagnosis could not be made. All of these are not ideal situations for a clinician...
January 21, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28110338/takayasu-s-arteritis-with-isolated-pulmonary-artery-involvement-in-a-middle-aged-asian-woman-with-hepatitis-b-and-latent-tuberculosis-infection
#2
Felix Liebscher, Thomas Pfammatter, Antonios Kolios, Matthias Greutmann, Daniel Franzen
We report a rare case of Takayasu's arteritis with isolated pulmonary artery stenosis in the presence of active hepatitis B and latent Mycobacterium tuberculosis infection in a middle-aged Asian woman who initially presented with severe dyspnea on exertion and recurrent syncope, occasional burning chest pains, and fatigue. Therapy of the active hepatitis B and latent M. tuberculosis infection together with a course of methotrexate led to a slight reversal of the symptoms, as angioplasty with or without stenting was not an option...
January 21, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28110121/s100a12-friend-or-foe-in-pulmonary-tuberculosis
#3
Vahid Bagheri
In humans, S100A12 (also named Calgranulin C and EN-RAGE) is mainly expressed and secreted by neutrophil granulocytes. Extracellular S100A12 is involved in innate immune responses against microorganisms and parasites. S100A12 is a ligand for the receptor for advanced glycation end products (RAGE), which is a cell surface receptor on macrophages, endothelium, and lymphocytes. In a recent study, Realegeno et al. showed that S100A12 exerts antimicrobial activity against Mycobacterium leprae in infected human macrophages...
January 18, 2017: Cytokine
https://www.readbyqxmd.com/read/28110049/performance-of-microscopic-observation-drug-susceptibility-for-the-rapid-diagnosis-of-tuberculosis-and-detection-of-drug-resistance-in-bamako-mali
#4
Moumine Sanogo, Bourahima Kone, Bassirou Diarra, Mamoudou Maiga, Bocar Baya, Anou M Somboro, Yeya S Sarro, Antieme C G Togo, Bindongo P P Dembele, Drissa Goita, Amadou Kone, Ousmane M'Baye, Nadie Coulibaly, Seydou Diabate, Brehima Traore, Mariam H Diallo, Yaya I Coulibaly, Paul Saleeb, Michael Belson, Susan Orsega, Sophia Siddiqui, Michael A Polis, Sounkalo Dao, Robert L Murphy, Souleymane Diallo
OBJECTIVES: In Mali early detection and treatment of multidrug resistance tuberculosis (MDR-TB) are still challenging due to cost, time and/or complexity associated with regular tests. Microscopic Observation Drug Susceptibility (MODS) is a low-cost assay validated by WHO in 2010. It is a liquid culture based assay to detect the "cording" characteristic of Mycobacterium tuberculosis complex (MTBc) and to assess susceptibility to both isoniazid and rifampicin defining MDR-TB. In this study we aimed to evaluate the performance of MODS as diagnostic tool compared to a validated method, the MGIT/AST/SIRE...
January 18, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28109869/outcomes-infectiousness-and-transmission-dynamics-of-patients-with-extensively-drug-resistant-tuberculosis-and-home-discharged-patients-with-programmatically-incurable-tuberculosis-a-prospective-cohort-study
#5
Keertan Dheda, Jason D Limberis, Elize Pietersen, Jody Phelan, Aliasgar Esmail, Maia Lesosky, Kevin P Fennelly, Julian Te Riele, Barbara Mastrapa, Elizabeth M Streicher, Tania Dolby, Abdallah M Abdallah, Fathia Ben-Rached, John Simpson, Liezel Smith, Tawanda Gumbo, Paul van Helden, Frederick A Sirgel, Ruth McNerney, Grant Theron, Arnab Pain, Taane G Clark, Robin M Warren
BACKGROUND: The emergence of programmatically incurable tuberculosis threatens to destabilise control efforts. The aim of this study was to collect prospective patient-level data to inform treatment and containment strategies. METHODS: In a prospective cohort study, 273 South African patients with extensively drug-resistant tuberculosis, or resistance beyond extensively drug-resistant tuberculosis, were followed up over a period of 6 years. Transmission dynamics, infectiousness, and drug susceptibility were analysed in a subset of patients from the Western Cape using whole-genome sequencing (WGS; n=149), a cough aerosol sampling system (CASS; n=26), and phenotypic testing for 18 drugs (n=179)...
January 18, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28109868/management-of-extensively-drug-resistant-tuberculosis
#6
Rosella Centis, Giovanni Sotgiu, Giovanni Battista Migliori
No abstract text is available yet for this article.
January 18, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28109830/a-10-gene-signature-for-the-diagnosis-and-treatment-monitoring-of-active-tuberculosis-using-a-molecular-interaction-network-approach
#7
Emily MacLean, Tobias Broger
No abstract text is available yet for this article.
January 16, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28109661/mapping-sites-of-high-tb-transmission-risk-integrating-the-shared-air-and-social-behaviour-of-tb-cases-and-adolescents-in-a-south-african-township
#8
Benjamin Patterson, Carl D Morrow, Daniel Kohls, Caroline Deignan, Samuel Ginsburg, Robin Wood
BACKGROUND: Tuberculosis remains a major public health problem in poverty-stricken areas of the world. Communal gathering places account for the majority of TB transmission in high burden settings. OBJECTIVE: To investigate the social behaviour patterns of individuals who have developed TB disease and adolescents at risk of infection. To develop a cheap and effective method to locate transmission hot spots in high burden communities. DESIGN: Portable, combined CO2/GIS monitors and location diaries were given to individuals from a South African township...
January 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28109639/factors-associated-with-a-long-mean-hospital-stay-in-patients-hospitalized-with-tuberculosis
#9
María Del Carmen Vera Sánchez-Rojas, Emma Muñoz Pérez, Ángeles Muñoz Pérez, Salvador Valero Cifuentes, Eva García Villalba, María de la Paz Egea Campoy, Alfredo Cano Sánchez, Enrique Bernal Morell
No abstract text is available yet for this article.
January 18, 2017: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28109255/the-effect-of-the-xpert-mtb-rif-test-on-the-time-to-mdr-tb-treatment-initiation-in-a-rural-setting-a-cohort-study-in-south-africa-s-eastern-cape-province
#10
Joshua Iruedo, Don O'Mahony, Sikhumbuzo Mabunda, Graham Wright, Busisiwe Cawe
BACKGROUND: There are significant delays in initiation of multidrug-resistant tuberculosis (MDR -TB) treatment. The Xpert MTB/RIF test has been shown to reduce the time to diagnosis and treatment of MDR-TB predominantly in urban centres. This study describes the time to treatment of MDR-TB and the effect of Xpert MTB/RIF on time to treatment in a deprived rural area in South Africa. METHODS: This was a retrospective cohort study analysing the medical records of patients diagnosed with MDR-TB in King Sabata Dalindyebo Sub-District between 2009 and 2014...
January 21, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28109130/identification-of-promising-dna-gyrb-inhibitors-for-tuberculosis-using-pharmacophore-based-virtual-screening-molecular-docking-and-molecular-dynamics-studies
#11
Md Ataul Islam, Tahir S Pillay
In the current study, we searched for potential DNA GyrB inhibitors using pharmacophore-based virtual screening followed by molecular docking and molecular dynamics simulation approaches. For this purpose, a set of 248 DNA GyrB inhibitors were collected from the literature and a well-validated pharmacophore model was generated. The best pharmacophore model explained that two each of hydrogen bond acceptor and hydrophobicity were critical for inhibition of DNA GyrB. Good statistical results of the pharmacophore model indicated that the model was robust in nature...
January 21, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28108715/improving-the-diagnosis-of-bovine-tuberculosis-in-farmed-deer
#12
Bryce M Buddle, Colin G Mackintosh
No abstract text is available yet for this article.
January 21, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28108375/the-role-of-pattern-recognition-receptors-in-lung-sarcoidosis
#13
Esmaeil Mortaz, Ian M Adcock, Atefhe Abedini, Arda Kiani, Mehdi Kazempour-Dizaji, Masoud Movassaghi, Johan Garssen
Sarcoidosis is a granulomatous disorder of unknown etiology. Infection, genetic factors, autoimmunity and an aberrant innate immune system have been explored as potential causes of sarcoidosis. The etiology of sarcoidosis remains unknown, and it is thought that it might be caused by an infectious agent in a genetically predisposed, susceptible host. Inflammation results from recognition of evolutionarily conserved structures of pathogens (Pathogen-associated molecular patterns, PAMPs) and/or from reaction to tissue damage associated patterns (DAMPs) through recognition by a limited number of germ line-encoded pattern recognition receptors (PRRs)...
January 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28108140/steroid-treatment-in-ocular-tuberculosis-a-double-edged-sword
#14
S Souissi, T David, L Beral
INTRODUCTION: We report the case of a Caribbean patient with an atypical presentation of bilateral tuberculous chorioretinopathy. PATIENT AND METHODS: A 57-year-old woman, with hypertension and non-insulin dependent diabetes, was referred to our center for a sudden loss of vision in the right eye to hand motions. Ophthalmic examination revealed only right papilledema. Brain magnetic resonance imaging was normal. Laboratory examination revealed no signs of inflammation...
January 17, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28107879/disease-transmission-in-animal-transfer-networks
#15
Dejene W Sintayehu, H H T Prins, I M A Heitkönig, W F de Boer
Infectious diseases transmission is strongly determined by who contacts whom. Bovine tuberculosis (bTB) caused by Mycobacterium bovis is a worldwide burden for animal populations. One of the major transmission mechanism between herd is the transfer of infectious animal. In East Africa, pastoralists may receive or bestow livestock to create and strengthen social relationships. Here, we used a network approach to examine the relative importance of such cattle transfer in the transmission of bTB. First, a total of 2550 cattle from 102 herds were tested using the comparative intradermal tuberculin test to assess the presence of bTB infected cattle in the herd...
February 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28107788/the-indications-and-role-of-paediatric-bronchoscopy-in-a-developing-country-with-high-prevalence-of-pulmonary-tuberculosis-and-hiv
#16
Irwin Webster, Pierre Goussard, Robert Gie, Jacques Janson, Gawie Rossouw
BACKGROUND: Bronchoscopy, an important investigation for the diagnosis and management of respiratory diseases, is widely used in high income countries. There is limited information on value of paediatric bronchoscopy in low and middle income countries (LMIC). AIMS AND OBJECTIVES: Aim was to describe the indications, findings and complications of bronchoscopy in a middle income country with a high prevalence of tuberculosis and HIV. METHODOLOGY: A retrospective analysis of a database over a 3...
January 20, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28106929/conformational-analysis-of-an-antibacterial-cyclodepsipeptide-active-against-m-tuberculosis-by-a-combined-roe-and-rdc-analysis
#17
Maic Fredersdorf, Michael Kurz, Armin Bauer, Marc-Olivier Ebert, Carla Rigling, Laurie Lannes, Christina Thiele
Griselimycin (GM) and methylgriselimycin (MGM), naturally produced by microorganisms of the genus Streptomyces, are cyclic depsipeptides composed of ten amino acids. They exhibit antibacterial activity against mycobacterium species by inhibiting the sliding clamp of prokaryotic DNA polymerase III and are therefore considered as potential anti-tuberculosis drugs. The difference between both peptides is the presence of L -(R)-4-methylproline in MGM instead of L -proline in GM at position 8 of the amino acid sequence...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28106876/inhibition-of-innate-immune-cytosolic-surveillance-by-an-m-tuberculosis-phosphodiesterase
#18
Ruchi Jain Dey, Bappaditya Dey, Yue Zheng, Laurene S Cheung, Jie Zhou, David Sayre, Pankaj Kumar, Haidan Guo, Gyanu Lamichhane, Herman O Sintim, William R Bishai
Mycobacterium tuberculosis infection leads to cytosolic release of the bacterial cyclic dinucleotide (CDN) c-di-AMP and a host-generated CDN, cGAMP, both of which trigger type I interferon (IFN) expression in a STING-dependent manner. Here we report that M. tuberculosis has developed a mechanism to inhibit STING activation and the type I IFN response via the bacterial phosphodiesterase (PDE) CdnP, which mediates hydrolysis of both bacterial-derived c-di-AMP and host-derived cGAMP. Mutation of cdnP attenuates M...
February 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28106753/naphthalimides-selectively-inhibit-the-activity-of-bacterial-replicative-dna-ligases-and-display-bactericidal-effects-against-tubercle-bacilli
#19
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/28106529/a-joint-cross-border-investigation-of-a-cluster-of-multidrug-resistant-tuberculosis-in-austria-romania-and-germany-in-2014-using-classic-genotyping-and-whole-genome-sequencing-methods-lessons-learnt
#20
Lena Fiebig, Thomas A Kohl, Odette Popovici, Margarita Mühlenfeld, Alexander Indra, Daniela Homorodean, Domnica Chiotan, Elvira Richter, Sabine Rüsch-Gerdes, Beatrix Schmidgruber, Patrick Beckert, Barbara Hauer, Stefan Niemann, Franz Allerberger, Walter Haas
Molecular surveillance of multidrug-resistant tuberculosis (MDR-TB) using 24-loci MIRU-VNTR in the European Union suggests the occurrence of international transmission. In early 2014, Austria detected a molecular MDR-TB cluster of five isolates. Links to Romania and Germany prompted the three countries to investigate possible cross-border MDR-TB transmission jointly. We searched genotyping databases, genotyped additional isolates from Romania, used whole genome sequencing (WGS) to infer putative transmission links, and investigated pairwise epidemiological links and patient mobility...
January 12, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
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