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https://www.readbyqxmd.com/read/29792151/pyrazole-and-imidazo-1-2-b-pyrazole-derivatives-as-new-potential-anti-tuberculosis-agents
#1
Elda Meta, Chiara Brullo, Michele Tonelli, Scott G Franzblau, Yuehong Wang, Rui Ma, Wan Baojie, Beatrice Silvia Orena, Maria Rosalia Pasca, Olga Bruno
BACKGROUND: We screened a large library of differently decorated imidazo-pyrazole and pyrazole derivatives as possible new antitubercular agents and this preliminary screening showed that many compounds are able to totally inhibit Mycobacterium growth (>90 %). Among the most active compounds, we selected some new possible hits based on their similarities and, at the same time, their novelty respect to the pipeline drugs. METHODS: In order to increase the potency and obtain more information about structure activity relationship (SAR), we design and synthesized three new series of compounds (2a-e, 3a-e, and 4a-l)...
May 23, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29791949/the-global-neurological-burden-of-tuberculosis
#2
Kiran Thakur, Mitashee Das, Kelly E Dooley, Amita Gupta
Central nervous system (CNS) involvement of tuberculosis (TB) is the most severe manifestation of TB and accounts for approximately 5 to 10% of all extrapulmonary TB (EPTB) cases and approximately 1% of all TB cases. TB meningitis (TBM) is the most common form of CNS TB, though other forms occur, often in conjunction with TBM, including intracranial tuberculomas, tuberculous brain abscesses, and spinal tubercular arachnoiditis. CNS TB often presents with nonspecific clinical features that mimic symptoms of other neurological conditions, often making diagnosis difficult...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29791559/sequential-analysis-as-a-tool-for-detection-of-amikacin-ototoxicity-in-the-treatment-of-multidrug-resistant-tuberculosis
#3
Karla Anacleto de Vasconcelos, Silvana Maria Monte Coelho Frota, Antonio Ruffino-Netto, Afrânio Lineu Kritski
OBJECTIVE: To investigate early detection of amikacin-induced ototoxicity in a population treated for multidrug-resistant tuberculosis (MDR-TB), by means of three different tests: pure-tone audiometry (PTA); high-frequency audiometry (HFA); and distortion-product otoacoustic emission (DPOAE) testing. METHODS: This was a longitudinal prospective cohort study involving patients aged 18-69 years with a diagnosis of MDR-TB who had to receive amikacin for six months as part of their antituberculosis drug regimen for the first time...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791557/new-and-repurposed-drugs-to-treat-multidrug-and-extensively-drug-resistant-tuberculosis
#4
Denise Rossato Silva, Margareth Dalcolmo, Simon Tiberi, Marcos Abdo Arbex, Marcela Munoz-Torrico, Raquel Duarte, Lia D'Ambrosio, Dina Visca, Adrian Rendon, Mina Gaga, Alimuddin Zumla, Giovanni Battista Migliori
Multidrug-resistant and extensively drug-resistant tuberculosis (MDR-TB and XDR-TB, respectively) continue to represent a challenge for clinicians and public health authorities. Unfortunately, although there have been encouraging reports of higher success rates, the overall rate of favorable outcomes of M/XDR-TB treatment is only 54%, or much lower when the spectrum of drug resistance is beyond that of XDR-TB. Treating M/XDR-TB continues to be a difficult task, because of the high incidence of adverse events, the long duration of treatment, the high cost of the regimens used, and the drain on health care resources...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791553/epidemiological-aspects-clinical-manifestations-and-prevention-of-pediatric-tuberculosis-from-the-perspective-of-the-end-tb-strategy
#5
Anna Cristina Calçada Carvalho, Claudete Aparecida Araújo Cardoso, Terezinha Miceli Martire, Giovanni Battista Migliori, Clemax Couto Sant'Anna
Tuberculosis continues to be a public health priority in many countries. In 2015, tuberculosis killed 1.4 million people, including 210,000 children. Despite the recent progress made in the control of tuberculosis in Brazil, it is still one of the countries with the highest tuberculosis burdens. In 2015, there were 69,000 reported cases of tuberculosis in Brazil and tuberculosis was the cause of 4,500 deaths in the country. In 2014, the World Health Organization approved the End TB Strategy, which set a target date of 2035 for meeting its goals of reducing the tuberculosis incidence by 90% and reducing the number of tuberculosis deaths by 95%...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791547/predictors-of-mortality-among-intensive-care-unit-patients-coinfected-with-tuberculosis-and-hiv
#6
Marcia Danielle Ferreira, Cynthia Pessoa das Neves, Alexandra Brito de Souza, Francisco Beraldi-Magalhães, Giovanni Battista Migliori, Afrânio Lineu Kritski, Marcelo Cordeiro-Santos
OBJECTIVE: To identify factors predictive of mortality in patients admitted to the ICU with tuberculosis (TB)/HIV coinfection in the Manaus, Amazon Region. METHODS: This was a retrospective cohort study of TB/HIV coinfected patients over 18 years of age who were admitted to an ICU in the city of Manaus, Brazil, between January of 2011 and December of 2014. Sociodemographic, clinical, and laboratory variables were assessed. To identify factors predictive of mortality, we employed a Cox proportional hazards model...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791542/impact-of-smoking-on-sputum-culture-conversion-and-pulmonary-tuberculosis-treatment-outcomes-in-brazil-a-retrospective-cohort-study
#7
Michelle Cailleaux-Cezar, Carla Loredo, José Roberto Lapa E Silva, Marcus Barreto Conde
OBJECTIVE: To evaluate the impact of smoking on pulmonary tuberculosis (PTB) treatment outcomes and the two-month conversion rates for Mycobacterium tuberculosis sputum cultures among patients with culture-confirmed PTB in an area with a moderate incidence of tuberculosis in Brazil. METHODS: This was a retrospective cohort study of PTB patients diagnosed and treated at the Thoracic Diseases Institute of the Federal University of Rio de Janeiro between 2004 and 2012...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29791488/comparison-of-the-validity-of-smear-and-culture-conversion-as-a-prognostic-marker-of-treatment-outcome-in-patients-with-multidrug-resistant-tuberculosis
#8
Kefyalew Addis Alene, Kerri Viney, Hengzhong Yi, Emma S McBryde, Kunyun Yang, Liqiong Bai, Darren J Gray, Zuhui Xu, Archie C A Clements
BACKGROUND: The World Health Organization (WHO) has conditionally recommended the use of sputum smear microscopy and culture examination for the monitoring of multidrug-resistant tuberculosis (MDR-TB) treatment. We aimed to assess and compare the validity of smear and culture conversion at different time points during treatment for MDR-TB, as a prognostic marker for end-of-treatment outcomes. METHODS: We undertook a retrospective observational cohort study using data obtained from Hunan Chest Hospital, China and Gondar University Hospital, Ethiopia...
2018: PloS One
https://www.readbyqxmd.com/read/29791449/impact-of-involvement-of-non-formal-health-providers-on-tb-case-notification-among-migrant-slum-dwelling-populations-in-odisha-india
#9
Ambarish Dutta, Sarthak Pattanaik, Rajendra Choudhury, Pritish Nanda, Suvanand Sahu, Rajendra Panigrahi, Bijaya K Padhi, Krushna Chandra Sahoo, P R Mishra, Pinaki Panigrahi, Daisy Lekharu, Robert H Stevens
BACKGROUND: Migrant labourers living in the slums of urban and industrial patches across India make up a key sub-population so far controlling Tuberculosis (TB) in the country is concerned. This is because many TB patients from these communities- remain under reached by the Revised National Tuberculosis Control Programme (RNTCP) of India. This marginalized community usually seeks early-stage healthcare from "friendly neighbourhood" non-formal health providers (NFHPs). Because, RNTCP has limited capacity to involve the NFHPs, an implementation research project was conceived, whereby an external partner would engage with the NFHPs to enable them to identify early TB symptomatics from this key sub-population who would be then tested using Xpert MTB/RIF technology...
2018: PloS One
https://www.readbyqxmd.com/read/29791131/sensitivity-enhancement-of-fret-immunoassays-by-multiple-antibody-conjugation-on-quantum-dots
#10
Giacomo Annio, Travis Jennings, Oya Tagit, Niko Hildebrandt
Quantum dots (QDs) are not only advantageous for color-tuning, improved brightness, and high stability, but their nanoparticle surfaces also allow for the attachment of many biomolecules. Because IgG antibodies (ABs) are in the same size range of biocompatible QDs and the AB orientation after conjugation to the QD is often random, it is difficult to predict if few or many ABs per QD will lead to an efficient AB-QD conjugate. This is particularly true for homogeneous Förster resonance energy transfer (FRET) sandwich immunoassays, for which the ABs on the QD must bind a biomarker that needs to bind a second AB-FRET-conjugate...
May 23, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29790496/luminescence-properties-of-mechanochemically-synthesized-lanthanide-containing-mil-78-mofs
#11
Tarek Alammar, Ihor Z Hlova, Shalabh Gupta, Viktor Balema, Vitalij K Pecharsky, Anja-Verena Mudring
Three metal-organic framework (MOF) compounds, Ln0.5Gd0.5{C6H3(COO)3}; Ln = Eu, Tb, and Dy with a MIL-78 structure, have been synthesized by a solvent-free mechanochemical method from stoichiometric mixtures of benzene 1,3,5-tricarboxylic acid, C6H3(COOH)3, also known as trimesic acid, and the respective lanthanide carbonates, Ln2(CO3)3·xH2O, Ln = Eu, Gd, Tb and Dy. MIL-78 (Ln0.5Gd0.5) shows the characteristic red, green, and yellow luminescence of Eu3+, Tb3+, and Dy3+, respectively. Efficient intramolecular energy transfer from the ligand triplet state to the excited states of Ln3+ ions can be observed...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29788948/genechip-analysis-of-resistant-mycobacterium-tuberculosis-with-previously-treated-tuberculosis-in-changchun
#12
Ming-Jin Zhang, Wen-Zhi Ren, Xue-Juan Sun, Yang Liu, Ke-Wei Liu, Zhong-Hao Ji, Wei Gao, Bao Yuan
BACKGROUND: With the widespread use of rifampicin and isoniazid, bacterial resistance has become a growing problem. Additionally, the lack of relevant baseline information for the frequency of drug-resistant tuberculosis (TB) gene mutations is a critical issue, and the incidence of this infection in the city of Changchun has not investigated to date. However, compared with the slow traditional methods of drug susceptibility testing, recently developed detection methods, such as rifampicin and isoniazid resistance-related gene chip techniques, allow for rapid, easy detection and simultaneous testing for mutation frequency and drug resistance...
May 22, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29787713/interferon-gamma-release-assay-performance-in-northeastern-brazil-influence-of-the-ifng-874-a-t-polymorphism
#13
Valdirene Leão Carneiro, Maria Teresita Bendicho, Rosalina Guedes Santos, Marilda Casela, Eduardo M Netto, Scarlet Torres Moraes Mota, Iza Cristina Araújo Pina, Roberto Meyer Nascimento, Songeli Menezes Freire, Theolis Barbosa
INTRODUCTION: Latent tuberculosis infection diagnosis based on the release of interferon-gamma in cultures of peripheral blood cells stimulated with Mycobacterium tuberculosis antigens has replaced the tuberculin skin test in many countries with low tuberculosis prevalence. The IFN-γ production can be influenced by genetic polymorphisms, of which the IFNG+874 (rs62559044) locus is the most studied. We investigated the possible influence of the IFNG+874 A/T polymorphism on interferon-gamma test performance...
May 19, 2018: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29787596/survival-and-predictors-of-mortality-among-children-co-infected-with-tuberculosis-and-human-immunodeficiency-virus-at-university-of-gondar-comprehensive-specialized-hospital-northwest-ethiopia-a-retrospective-follow-up-study
#14
Kendalem Asmare Atalell, Nigusie Birhan Tebeje, Daniale Tekelia Ekubagewargies
BACKGROUND: Tuberculosis (TB) is the leading cause of death in Human immunodeficiency virus (HIV) infected children globally. The aims of this study were to determine the mortality rate and to identify the predictors of mortality among TB/HIV co-infected children at University of Gondar Comprehensive Specialized Hospital. METHOD: A retrospective follow-up study was conducted among TB/HIV co-infected children from February 2005 to March 2017. A Kaplan-Meier curve was used to estimate the median survival time...
2018: PloS One
https://www.readbyqxmd.com/read/29787561/interplay-of-strain-and-race-ethnicity-in-the-innate-immune-response-to-m-tuberculosis
#15
P Nahid, L G Jarlsberg, M Kato-Maeda, M R Segal, D H Osmond, S Gagneux, K Dobos, M Gold, P C Hopewell, D M Lewinsohn
BACKGROUND: The roles of host and pathogen factors in determining innate immune responses to M. tuberculosis are not fully understood. In this study, we examined host macrophage immune responses of 3 race/ethnic groups to 3 genetically and geographically diverse M. tuberculosis lineages. METHODS: Monocyte-derived macrophages from healthy Filipinos, Chinese and non-Hispanic White study participants (approximately 45 individuals/group) were challenged with M. tuberculosis whole cell lysates of clinical strains Beijing HN878 (lineage 2), Manila T31 (lineage 1), CDC1551 (lineage 4), the reference strain H37Rv (lineage 4), as well as with Toll-like receptor 2 agonist lipoteichoic acid (TLR2/LTA) and TLR4 agonist lipopolysaccharide (TLR4/LPS)...
2018: PloS One
https://www.readbyqxmd.com/read/29786911/esipt-modulated-emission-of-lanthanide-complexes-different-energy-transfer-pathway-and-multi-responses
#16
Si-Si Sun, Zheng Wang, Xiang Wen Wu, Jian-Hua Zhang, Chao-Jie Li, Shao-Yun Yin, Ling Chen, Mei Pan, Cheng-Yong Su
Two series of isostructural lanthanide coordination complexes, namely, LIFM-42(Ln), Ln = Eu, Tb, Gd, and LIFM-43(Ln), Ln = Er, Yb) were synthesized through the self-assembly of an ESIPT (excited-state intramolecular proton transfer) ligand, H2hpi2cf (5-(2-(5-fluoro-2-hydroxyphenyl)-4,5-bis(4-fluorophenyl)-1H-imidazol-1-yl)isophthalic acid) with different lanthanide ions. In the coordination structures linked by the ligands and oxo-bridged LnIII2 clusters (for LIFM-42(Ln) series) or isolated LnIII ions (for LIFM-43(Ln) series), the ESIPT ligand can serve as both the host and antenna for protecting and sensitizing the photoluminescence (PL) of LnIII ions...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786520/impact-of-piglet-oral-vaccination-against-tuberculosis-in-endemic-free-ranging-wild-boar-populations
#17
Iratxe Díez-Delgado, Iker A Sevilla, Beatriz Romero, Eleanor Tanner, Jose A Barasona, Andrew R White, Peter W W Lurz, Mike Boots, José de la Fuente, Lucas Dominguez, Joaquin Vicente, Joseba M Garrido, Ramón A Juste, Alicia Aranaz, Christian Gortazar
The Eurasian wild boar (Sus scrofa) is the main wild reservoir of the Mycobacterium tuberculosis complex in Mediterranean woodlands and a key risk factor for cattle tuberculosis (TB) breakdowns. Wild boar vaccination therefore has the potential to be a valuable tool for TB control. We tested two orally delivered vaccines, heat-inactivated Mycobacterium bovis (IV) and BCG, in four sites (two per vaccine type: one Managed and one Natural or unmanaged) during four years. TB was also monitored in 15 unvaccinated sites (spatial control), as well as in all sites from one year prior to intervention (temporal control)...
July 1, 2018: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/29786151/time-dependent-loss-of-trabecular-bone-in-human-tibial-plateau-fractures
#18
Lucian Bogdan Solomon, David Kitchen, Paul Hamill Anderson, Dongqing Yang, Yolandi Starczak, Masakazu Kogawa, Egon Perilli, Peter Jonathan Smitham, Mark Sean Rickman, Dominic Thewlis, Gerald James Atkins
We investigated if time between injury and surgery affects cancellous bone properties in patients suffering tibial plateau fractures (TPF), in terms of structural integrity and gene expression controlling bone loss. A cohort of 29 TPF, operated 1-17 days post-injury, had biopsies from the fracture and an equivalent contralateral limb site, at surgery. Samples were assessed using micro-computed tomography and real-time RT-PCR analysis for the expression of genes known to be involved in bone remodeling and fracture healing...
May 22, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29785600/performance-and-microbial-community-of-cic-anaerobic-reactor-treating-food-waste-under-different-grease-contents-and-inner-circulation-ratio
#19
Chengyuan Su, Lijian Zhao, Liming Liao, Jingjing Qin, Yuxiang Lu, Menglin Chen, Mei Huang, Zhi Huang
High concentrations of grease easily inhibit anaerobic digestion. The stability of the process and microbial responses in the controlling internal circulation (CIC) reactor used for treating food waste were investigated under different grease contents and inner circulation ratios. Results showed that at the grease content of 1 g/L, the removal rates of 94% and 86-93% were achieved for chemical oxygen demand (COD) and NH3 -N, respectively. In contrast, when the grease content increased to 7 g/L, removal rates for COD and NH3 -N significantly decreased to 42...
May 21, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29785561/reptb-a-gene-ontology-based-drug-repurposing-approach-for-tuberculosis
#20
Anurag Passi, Neeraj Kumar Rajput, David J Wild, Anshu Bhardwaj
Tuberculosis (TB) is the world's leading infectious killer with 1.8 million deaths in 2015 as reported by WHO. It is therefore imperative that alternate routes of identification of novel anti-TB compounds are explored given the time and costs involved in new drug discovery process. Towards this, we have developed RepTB. This is a unique drug repurposing approach for TB that uses molecular function correlations among known drug-target pairs to predict novel drug-target interactions. In this study, we have created a Gene Ontology based network containing 26,404 edges, 6630 drug and 4083 target nodes...
May 21, 2018: Journal of Cheminformatics
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