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Tuberculosis

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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
#1
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
#2
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/28742349/exploring-the-sponge-consortium-plakortis-symbiotica-xestospongia-deweerdtae-as-a-potential-source-of-antimicrobial-compounds-and-probing-the-pharmacophore-for-antituberculosis-activity-of-smenothiazole-a-by-diverted-total-synthesis
#3
Carlos Jiménez-Romero, Joanna E Rode, Yeiry M Pérez, Scott G Franzblau, Abimael D Rodríguez
Fractionation of the bioactive CHCl3-MeOH (1:1) extracts obtained from two collections of the sponge consortium Plakortis symbiotica-Xestospongia deweerdtae from Puerto Rico provided two new plakinidone analogues, designated as plakinidone B (2) and plakinidone C (3), as well as the known plakinidone (1), plakortolide F (4), and smenothiazole A (5). The structures of 1-5 were characterized on the basis of 1D and 2D NMR spectroscopic, IR, UV, and HRMS analysis. The absolute configurations of plakinidones 2 and 3 were established through chemical correlation methods, VCD/ECD experiments, and spectroscopic data comparisons...
July 25, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28742315/w%C3%A5-adys%C3%A5-aw-biega%C3%A5-ski-md-1857-1917
#4
Hanna Stypułkowska-Misiurewicz
Dr W. Biegański was an eminent doctor of internal medicine mostly the acute infectious diseases and tuberculosis, he was scientist doing the research on the origin of the diseases and on the medical ethics, but more he was also a social activist taking care on the public health of the society in his time still living under the Russian rule. W. Biegański living on the XIX/XX century in small provincial town, grace to his knowledge, self education and energy created the important scientific center in the municipal small hospital...
2017: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/28741299/a-review-of-moxifloxacin-for-the-treatment-of-drug-susceptible-tuberculosis
#5
REVIEW
Anushka Naidoo, Kogieleum Naidoo, Helen McIlleron, Sabiha Essack, Nesri Padayatchi
Moxifloxacin, an 8-methoxy quinolone, is an important drug in the treatment of multidrug-resistant tuberculosis and is being investigated in novel drug regimens with pretomanid, bedaquiline, and pyrazinamide, or rifapentine, for the treatment of drug-susceptible tuberculosis. Early results of these studies are promising. Although current evidence does not support the use of moxifloxacin in treatment-shortening regimens for drug-susceptible tuberculosis, it may be recommended in patients unable to tolerate standard first-line drug regimens or for isoniazid monoresistance...
July 24, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28740962/the-effect-of-corticosteroid-treatment-on-bilateral-idiopathic-granulomatous-mastitis
#6
Fatih Çiftci, İbrahim Abdurrahman, Zeynep Tatar
Idiopathic granulomatous mastitis (IGM) is the commonly encountered form of granulomatous mastitis that may result into repetitive infections and/or abscess formation. Mastitis may develop secondary to a systemic disorder such as tuberculosis, diabetes mellitus, or rheumatoid arthritis, or it may develop as an idiopathic disorder. Idiopathic granulomatous mastitis is the most frequent form of all granulomatous diseases affecting the breast. This disorder frequently presents as painful and fast-growing mass in the breast...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28739828/mice-bone-marrow-sca-1-cd44-mesenchymal-stem-cells-kill-avirulent-mycobacteria-but-not-mycobacterium-tuberculosis-through-modulation-of-cathelicidin-expression-via-p38-mapk-dependent-pathway
#7
Sumanta Kumar Naik, Avinash Padhi, Geetanjali Ganguli, Srabasti Sengupta, Sanghamitra Pati, Dasarathi Das, Avinash Sonawane
Mycobacterium tuberculosis (Mtb) primarily infects lung macrophages. However, recent study has shown that Mtb also infect and persist in dormant form inside the bone marrow mesenchymal stem cells (BM-MSCs) even after successful antibiotic therapy. However, the mechanism(s) by which Mtb survives in BM-MSCs is still not known. Like macrophages, BM-MSCs do not contain a well-defined endocytic pathway, which is known to play a central role in the clearance of internalized mycobacteria. Here, we studied the fate of virulent and avirulent mycobacteria in Sca-1(+)/CD44(+) BM-MSCs...
July 24, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28739794/population-pharmacokinetics-of-azd-5847-in-adults-with-pulmonary-tuberculosis
#8
Abdullah Alsultan, Jennifer J Furin, Jeannine Du Bois, Elana van Brakel, Phalkun Chheng, Amour Venter, Bonnie Thiel, Sara A Debanne, W Henry Boom, Andreas H Diacon, John L Johnson, Charles A Peloquin
AZD-5847 is a new oxazolidinone derivative under development for the treatment of tuberculosis. In this study we describe the population pharmacokinetics of AZD-5847 in patients with tuberculosis based on a recently completed phase II study. The study included 60 patients with drug susceptible TB. Patients were randomized to four doses (500 mg once daily, 1200 mg once daily, 500 mg twice daily and 800 mg twice daily). Patients were intensively sampled on day 1 and 14. AZD-5847 pharmacokinetics were best described with a two compartment system with tlag for absorption...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739786/benzoxazoles-phthalazinones-and-arylurea-based-compounds-with-impdh-independent-antibacterial-activity-against-francisella-tularensis
#9
Suresh Kumar Gorla, Yan Zhang, Meaghan M Rabideau, Aiping Qin, Shibin Chacko, Amanda L House, Corey R Johnson, Kavitha Mandapati, Hannah M Bernstein, Elizabeth S McKenney, Helena Boshoff, Minjia Zhang, Ian J Glomski, Joanna B Goldberg, Gregory D Cuny, Barbara J Mann, Lizbeth Hedstrom
Francisella tularensis is the causative agent of tularemia and a potential biowarfare agent. The virulence of F. tularensis is decreased by deletion of guaB, the gene encoding inosine monophosphate dehydrogenase (IMPDH), suggesting that this enzyme is a target for antibacterial design. Here we report that F. tularensis growth is blocked by inhibitors of bacterial IMPDHs. Seventeen compounds from two different frameworks, designated D and Q, display antibacterial activity with minimum inhibitory concentrations less than 1 μM...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739784/assessment-of-bactericidal-drug-activity-and-treatment-outcome-in-a-mouse-tuberculosis-model-using-a-clinical-beijing-strain
#10
Bas C Mourik, Gerjo J de Knegt, Annelies Verbon, Johan W Mouton, Hannelore I Bax, Jurriaan E M de Steenwinkel
Objectives:Mycobacterium tuberculosis Beijing strains are associated with lower treatment success rates in tuberculosis patients. In contrast, laboratory strains such as H37Rv are often used in preclinical tuberculosis models. Therefore, we explored the impact of using a clinical Beijing strain on treatment outcome in our mouse tuberculosis model. Additionally, the predictive value of bactericidal activity on treatment outcome was assessed.Methods: BALB/c mice were infected with a Beijing strain and treated with one of ten different combinations of conventional anti-TB drugs...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739783/effect-of-rifampin-on-the-single-dose-pharmacokinetics-of-oral-cabotegravir-in-healthy-subjects
#11
S L Ford, K Sutton, Y Lou, Z Zhang, A Tenorio, C Trezza, P Patel, W Spreen
Introduction: Drug-drug interactions between antiretroviral medications and rifampin complicate the treatment of HIV and tuberculosis coinfection. This study evaluated the effect of rifampin on the pharmacokinetics of oral cabotegravir, an integrase strand transfer inhibitor being investigated for long-acting treatment and prevention of HIV-1 infection.Methods: This was a phase I, single-center, open-label, fixed-sequence crossover study in healthy adults. The objective was to evaluate the effect of steady-state rifampin on the single-dose plasma pharmacokinetics of cabotegravir...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739782/co-administration-of-allopurinol-to-increase-anti-mycobacterial-efficacy-of-pyrazinamide-evaluation-in-a-whole-blood-bactericidal-activity-model
#12
Claire M Naftalin, Rupangi Verma, Meera Gurumurthy, Qingshu Lu, Matthew Zimmerman, Benjamin Chaik Meng Yeo, Kin Hup Tan, Wenwei Lin, Buduo Yu, Véronique Dartois, Nicholas I Paton
Co-administering pyrazinamide (PZA) with the xanthine oxidase inhibitor, allopurinol, increases systemic levels of the active metabolite, pyrazinoic acid (POA), but effects on bactericidal activity against tuberculosis are unknown. We randomized healthy volunteers to take a single dose of PZA (either 10mg/kg or 25mg/kg) and the same dose 7 days later co-administered with allopurinol (100mg daily, 2 days before to 1 day after PZA dose). Blood was drawn at intervals to 48 hours after each PZA dose and drug levels were measured using liquid chromatography-tandem mass spectrometry...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739779/in-vitro-drug-susceptibility-of-bedaquiline-delamanid-linezolid-clofazimine-moxifloxacin-and-gatifloxacin-against-extensively-drug-resistant-tuberculosis-from-beijing-china
#13
Yu Pang, Zhaojing Zong, Fengmin Huo, Wei Jing, Yifeng Ma, Lingling Dong, Yunxu Li, Liping Zhao, Yuhong Fu, Hairong Huang
Extensively drug-resistant tuberculosis (XDR-TB) is a deadly form of TB that can be incurable due to its extreme drug resistance. In this study, we aimed to explore in vitro drug susceptibility of bedaquiline (BDQ), delamanid (DMD), linezolid (LZD), clofazimine (CLO), moxifloxacin (MXF), and gatifloxacin (GAT) against 90 XDR-TB strains isolated from patients in China. We also described the genetic characteristics of XDR-TB isolates with acquired drug resistance. Resistance to MFX, GAT, LZD, CLO, DMD and BDQ was found in 82 (91...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739593/pillars-article-the-kinetics-of-emergence-and-loss-of-mediator-t-lymphocytes-acquired-in-response-to-infection-with-mycobacterium-tuberculosis-j-immunol-1987-138-293-298
#14
Ian M Orme
No abstract text is available yet for this article.
August 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28739592/defining-the-kinetics-phenotype-and-function-of-t-cells-induced-by-mycobacterium-tuberculosis-pillar-of-immunity-to-tuberculosis
#15
Andrea M Cooper
No abstract text is available yet for this article.
August 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28739566/loculated-empyema-due-to-tuberculosis-in-a-child
#16
Pierre Goussard, Julie Morrison, Ilse Nadine Appel, Savvas Andronikou
A 9-year-old girl from black ethnic origin presented with a history of fever, cough, loss of weight and right-sided chest wall pain for 2 weeks. Chest X-ray demonstrated an effusion, which was shown to be loculated on chest CT scan. She was not responding to medical treatment and at thoracotomy loculated pus was drained. Mycobacterium tuberculosis (TB) was cultured from the pus. TB is a rare cause of loculated empyema with an overlapping clinical and radiological picture with pyogenic infections.
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28739436/efficacy-of-isoniazid-salvage-therapy-for-latent-tuberculosis-infection-in-patients-with-immune-mediated-inflammatory-disorders-a-retrospective-cohort-study-in-taiwan
#17
Shiang-Fen Huang, Ming-Han Chen, Fu-Der Wang, Chang-Youh Tsai, Chang-Phone Fung, Wei-Juin Su
BACKGROUND: Active tuberculosis (TB) in patients with latent tuberculosis infection (LTBI) was associated with use of biological agents for immune-mediated inflammatory disorders (IMIDs). For decreasing active TB, isoniazid prophylaxis therapy was administered before biologic therapy among IMID patients with LTBI. However, for patients who had been received biologics for a long time with unknown status of LTBI or exposure history of active TB, the prevalence of LTBI and efficacy of isoniazid therapy were unclear...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28739421/whole-genome-sequencing-of-mycobacterium-bovis-to-obtain-molecular-fingerprints-in-human-and-cattle-isolates-from-baja-california-mexico
#18
Sarai Estrella Sandoval-Azuara, Ricardo Perea-Jacobo, Raquel Muñiz-Salazar, Suelee Robbe-Austerman, Alejandro Perera-Ortiz, Gilberto López-Valencia, Doris M Bravo, Alejandro Sanchez-Flores, Daniela Miranda-Guzmán, Carlos Alberto Flores-López, Roberto Zenteno-Cuevas, Rafael Laniado-Laborín, Fabiola Lafarga de la Cruz, Tod P Stuber
OBJECTIVES: To determine genetic diversity by comparing the whole genome sequences of M. bovis cattle and human isolates from Baja California. METHODS: We used a whole genome sequencing strategy to obtain the molecular fingerprints of 172 isolates of Mycobacterium bovis from Baja California, Mexico, of which 155 were isolated from cattle, and 17 were isolated from humans. We characterized spoligotypes in silico and evaluated single nucleotide polymorphism (SNP) differences between the isolates...
July 21, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28739353/incidence-of-tuberculosis-among-patients-with-rheumatoid-arthritis-using-tnf-blockers-in-brazil-data-from-the-brazilian-registry-of-biological-therapies-in-rheumatic-diseases-registro-brasileiro-de-monitora%C3%A3-%C3%A3-o-de-terapias-biol%C3%A3-gicas-biobadabrasil
#19
Claudia Leiko Yonekura, Rene Donizeti Ribeiro Oliveira, David C Titton, Roberto Ranza, Aline Ranzolin, André L Hayata, Ângela Duarte, Inês G Silveira, Hellen M da S de Carvalho, Júlio C Bertacini de Moraes, Mirhelen Mendes de Abreu, Valéria Valim, Washington Bianchi, Claiton Viegas Brenol, Ivanio A Pereira, Izaias Costa, José C Macieira, José R S Miranda, Luiz S Guedes-Barbosa, Manoel B Bertolo, Maria Fátima Lobato da C Sauma, Marília B G Silva, Marlene Freire, Morton A Scheinberg, Roberto A Toledo, Sheila K F Oliveira, Vander Fernandes, Marcelo M Pinheiro, Glaucio Castro, Walber Pinto Vieira, Cesar Emile Baaklini, Antonio Ruffino-Netto, Geraldo da Rocha Castelar Pinheiro, Ieda Maria Magalhães Laurindo, Paulo Louzada-Junior
OBJECTIVES: To assess the incidence of tuberculosis and to screen for latent tuberculosis infection among Brazilians with rheumatoid arthritis using biologics in clinical practice. PATIENTS AND METHODS: This cohort study used data from the Brazilian Registry of Biological Therapies in Rheumatic Diseases (Registro Brasileiro de Monitoração de Terapias Biológicas - BiobadaBrasil), from 01/2009 to 05/2013, encompassing 1552 treatments, including 415 with only synthetic disease-modifying anti-rheumatic drugs, 942 synthetic DMARDs combined with anti-tumor necrosis factor (etanercept, infliximab, adalimumab) and 195 synthetic DMARDs combined with other biologics (abatacept, rituximab and tocilizumab)...
July 21, 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28739306/the-in-vitro-and-in-vivo-effects-of-microrna-133a-on-intervertebral-disc-destruction-by-targeting-mmp9-in-spinal-tuberculosis
#20
Xin-Wen Wang, Ji-Jun Liu, Qi-Ning Wu, Shu-Fang Wu, Ding-Jun Hao
AIMS: We aim to investigate the role of microRNA-133a (miR-133a) in intervertebral disc destruction by targeting MMP9 in spinal tuberculosis (TB). MAIN METHODS: Rabbit models with spinal TB were established and assigned to the blank, miR-133a mimic, miR-133a inhibitor and negative control (NC) groups. Primary notochordal cells were extracted and separately transfected with miR-133a mimics, miR-133a inhibitor, miR-nonsense sequence control (NC), si-NC and si-MMP9...
July 21, 2017: Life Sciences
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