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https://www.readbyqxmd.com/read/27914216/synthesis-and-luminescence-characterization-of-y2-bazno5-re-re%C3%A2-%C3%A2-eu-3-tb-3-pr-3-and-sm-3-phosphors
#1
D R Taikar, C P Joshi, S V Moharil
Modified synthesis and luminescence of Y2 BaZnO5 phosphors activated with the rare earths (RE) Eu(3)(+) , Tb(3)(+) , Pr(3)(+) and Sm(3)(+) are reported. RE2 BaZnO5 phosphors have attracted attention because of their interesting magnetic and optical properties; and are usually prepared using a two-step solid-state reaction. In the first step, carbonates or similar precursors are thoroughly mixed and heated at 900°C to decompose them to oxides. To eliminate the unwanted phases like BaRE2 O4 , the resulting powders are reheated at 1100°C for a long time...
December 2, 2016: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/27914088/murine-mycobacterium-marinum-infection-as-a-model-for-tuberculosis
#2
Julia Lienard, Fredric Carlsson
Mycobacteria are a major human health problem globally. Regarding tuberculosis the situation is worsened by the poor efficacy of current vaccine regimens and by emergence of drug-resistant strains (Manjelievskaia J et al, Trans R Soc Trop Med Hyg 110: 110, 2016; Pereira et al., Lancet Infect Dis 12:300-306, 2012; http://www.who.int/tb/publications/global_report/en/) undermining both disease-prevention and available treatments. Thus, increased basic understanding of mycobacterial-and particularly Mycobacterium tuberculosis-virulence strategies and pathogenesis is of great importance...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27913560/cohort-profile-the-diabetes-tuberculosis-treatment-outcome-ditto-study-in-pakistan
#3
Fatima Mukhtar, Zahid A Butt
PURPOSE: Pakistan is faced with an increasing prevalence of diabetes in addition to its existing high burden of tuberculosis (TB). Diabetes has a detrimental effect on treatment outcomes of patients with TB, which may hinder achieving the goals of the End-TB strategy by 2030. We conducted a prospective cohort study to determine difference between treatment outcomes among patients with diabetes and new pulmonary tuberculosis (PTB) and patients without diabetes and new PTB. This would help generate contextual and valid scientific evidence from a developing country like Pakistan with its unique interplay of sociocultural, economic and health system factors to inform policy and practice...
December 2, 2016: BMJ Open
https://www.readbyqxmd.com/read/27913312/crossborder-travel-and-multidrugresistant-tuberculosis-mdrtb-in-europe
#4
Alberto Matteelli, Rosella Centis, Giorgia Sulis, Marina Tadolini
The number of international migrants worldwide has continued to grow rapidly over the past fifteen years and the trend is expected to continue, making the health matters associated with migration a crucial public health challenges faced by governments and societies. Multidrug-resistant tuberculosis is a paradigm of transmissible diseases that do not respect borders and poses a multifaceted and complex challenge on migrant health. The guiding principles for the health response are the respect of equity and human rights as well as the accurate analysis of epidemiological trends and determinants of TB in migrants...
November 29, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27913043/evaluation-of-the-genexpert-mtb-rif-assay-on-extrapulmonary-and-respiratory-samples-other-than%C3%A2-sputum-a-low-burden-country-experience
#5
Sushil Pandey, Jacob Congdon, Bradley McInnes, Alina Pop, Christopher Coulter
The aim of this study was to assess the performance of the GeneXpert MTB/RIF assay on extrapulmonary (EP) and respiratory (non-sputum) clinical samples of patients suspected of having tuberculosis (TB) from Queensland, Australia. A total of 269 EP and respiratory (non-sputum) clinical samples collected from Qld patients who were suspected of having TB were subjected to the GeneXpert MTB/RIF analysis, Ziehl-Neelsen (ZN) staining, Mycobacterium tuberculosis (MTB) culture and drug susceptibility testing. Phenotypic and genotypic data were compared...
November 29, 2016: Pathology
https://www.readbyqxmd.com/read/27911922/nucleic-acid-amplification-testing-and-sequencing-combined-with-acid-fast-staining-in-needle-biopsy-lung-tissues-for-the-diagnosis-of-smear-negative-pulmonary-tuberculosis
#6
Faming Jiang, Weiwei Huang, Ye Wang, Panwen Tian, Xuerong Chen, Zongan Liang
BACKGROUND: Smear-negative pulmonary tuberculosis (PTB) is common and difficult to diagnose. In this study, we investigated the diagnostic value of nucleic acid amplification testing and sequencing combined with acid-fast bacteria (AFB) staining of needle biopsy lung tissues for patients with suspected smear-negative PTB. METHODS: Patients with suspected smear-negative PTB who underwent percutaneous transthoracic needle biopsy between May 1, 2012, and June 30, 2015, were enrolled in this retrospective study...
2016: PloS One
https://www.readbyqxmd.com/read/27911670/quantitative-assessment-of-metal-elements-using-moss-species-as-biomonitors-in-downwind-area-of-lead-zinc-mine
#7
Biljana Balabanova, Trajče Stafilov, Robert Šajn, Katerina Bačeva Andonovska
Distributions of a total of 21 elements were monitored in significantly lead-zinc polluted area using moss species (Hypnum cupressiforme and Camptothecium lutescens) used interchangeably, covering a denser sampling network. Interspecies comparison was conducted using Box-Cox transformed values, due to their skewed distribution. The median concentrations of trace elements in the both mosses examined decreased in the following order: Fe>Mn>Zn>Pb>Cu>Ni∼Cr∼As>Co>Cd>Hg. For almost all analyzed elements, H...
December 2, 2016: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/27911140/effect-of-secondary-preventive-therapy-on-recurrence-of-tuberculosis-in-hiv-infected-individuals-a-systematic-review
#8
Wassilis Sc Bruins, Frank van Leth
Human immunodeficiency virus (HIV)-infected individuals successfully treated for tuberculosis (TB) remain at risk of recurrence of the disease, especially in high TB incidence settings. We performed a systematic review, investigating whether secondary preventive therapy (sPT) with anti-TB drugs (preventive therapy in former TB patients with treatment success) is an effective strategy to prevent recurrence of TB in this patient group. We searched the databases PubMed, Cochrane Library, EMBASE, Web of Science and Google Scholar using the keywords HIV-infections, HIV, human immunodeficiency virus, AIDS, isoniazid, isoniazid preventive therapy (IPT), tuberculosis, TB, recurrence and recurrent disease, resulting in 253 potential publications...
December 2, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27910720/the-management-of-infection-with-mycobacterium-tuberculosis-in-young-children-post-2015-an-opportunity-to-close-the-policy-practice-gap
#9
Stephen M Graham
The treatment of infection with Mycobacterium tuberculosis in young children is supported by universal policy based on strong rationale and evidence of effectiveness, but has rarely been implemented in tuberculosis endemic countries. Areas covered: This review highlights a number of important recent developments that provide an unprecedented opportunity to close the policy-practice gap, as well as ongoing needs to facilitate implementation under programmatic conditions and scale-up. Expert commentary: The WHO's End TB Strategy and Stop TB Partnership's Plan to End TB provide ambitious targets for prevention at a time when National Tuberculosis Programs in tuberculosis endemic countries are increasing attention to the challenges of management and prevention of tuberculosis disease in children...
December 2, 2016: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/27910715/how-do-we-measure-adherence-to-anti-tuberculosis-treatment
#10
Salomé Valencia, Montserrat León, Irene Losada, Victor G Sequera, Manuel Fernandez Quevedo, Alberto L García-Basteiro
Completion of anti-tuberculosis (TB) treatment is of paramount importance for TB patients, as well as for the global efforts of TB control. However, there is neither a gold-standard measure to monitor adherence to TB treatment nor a widely used definition for different levels of adherence. Areas covered: in this review we aim to describe the different methods used to measure patients' adherence to anti-TB treatment, identifying their main strengths and limitations, with a focus on low resource settings. Expert commentary: there is a need for continuing the quest for a low cost, reliable and acceptable measure of adherence to TB treatment...
December 2, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27908271/host-directed-therapeutics-against-mycobacterial-infections
#11
Haruaki Tomioka, Chiaki Sano, Yutaka Tatano
The high incidence of tuberculosis (TB) in the world, especially in developing countries, the resurgence of TB in industrialized countries, and the global increase in the prevalence of Mycobacterium avium complex infections in immunocompromised hosts have prompted the quest for novel antimycobacterial drugs. However, the development of such antimicrobial chemotherapeutics is currently making very slow progress even with using the bioinformatics-based methodology for drug design. It thus appears that devising improved administration protocols for clinical treatment against intractable mycobacterial infections using existing chemotherapeutics is more practical than awaiting the development of new antimycobacterial drugs...
December 2, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27908155/a-new-algorithm-for-estimating-the-rod-volume-fraction-and-the-trabecular-thickness-from-in-vivo-computed-tomography
#12
Felix Sebastian Leo Thomsen, Jaime Andrés Peña, Yongtao Lu, Gerd Huber, Michael Morlock, Claus-Christian Glüer, Claudio Augusto Delrieux
PURPOSE: Existing microstructure parameters are able to predict vertebral in vitro failure load, but for noisy in vivo data more complex algorithms are needed for a robust assessment. METHODS: A new algorithm is proposed for the microstructural analysis of trabecular bone under in vivo quantitative computed tomography (QCT). Five fractal parameters are computed: (1) the average local fractal dimension FD, (2) its standard deviation FD.SD, (3) the fractal rod volume ratio fRV/BV, (4) the average fractal trabecular thickness fTb...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27907875/s-substituted-3-5-dinitrophenyl-1-3-4-oxadiazole-2-thiols-and-tetrazole-5-thiols-as-highly-efficient-antitubercular-agents
#13
Galina Karabanovich, Jan Němeček, Lenka Valášková, Alejandro Carazo, Klára Konečná, Jiřina Stolaříková, Alexandr Hrabálek, Oto Pavliš, Petr Pávek, Kateřina Vávrová, Jaroslav Roh, Věra Klimešová
Two new classes of antitubercular agents, namely 5-alkylsulfanyl-1-(3,5-dinitrophenyl)-1H-tetrazoles and 2-alkylsulfanyl-5-(3,5-dinitrophenyl)-1,3,4-oxadiazoles, and their structure-activity relationships are described. These compounds possessed excellent activity against Mycobacterium tuberculosis, including the clinically isolated multidrug (MDR) and extensively drug-resistant (XDR) strains, with no cross resistance with first or second-line anti-TB drugs. The minimum inhibitory concentration (MIC) values of the most promising compounds reached 0...
November 21, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27906986/cost-effectiveness-of-community-based-tb-hiv-screening-and-linkage-to-care-in-rural-south-africa
#14
Jennifer A Gilbert, Sheela V Shenoi, Anthony P Moll, Gerald H Friedland, A David Paltiel, Alison P Galvani
South Africa has one of the highest burdens of TB worldwide, driven by the country's widespread prevalence of HIV, and further complicated by drug resistance. Active case finding within the community, particularly in rural areas where healthcare access is limited, can significantly improve diagnosis and treatment coverage in high-incidence settings. We evaluated the potential health and economic consequences of implementing community-based TB/HIV screening and linkage to care. Using a dynamic model of TB and HIV transmission over a time horizon of 10 years, we compared status quo TB/HIV control to community-based TB/HIV screening at frequencies of once every two years, one year, and six months...
2016: PloS One
https://www.readbyqxmd.com/read/27906474/tuning-the-energy-transfer-efficiency-between-ce-3-and-ln-3-ions-ln-tm-sm-tb-dy-by-controlling-the-crystal-phase-of-nayf4-nanocrystals
#15
Venkata N K B Adusumalli, Heramba V S R M Koppisetti, Sagar Ganguli, Shyam Sarkar, Venkataramanan Mahalingam
NaYF4 is a superior host matrix to study the luminescence properties of lanthanide (Ln(3+) ) ions. Ln(3+) ions in hexagonal-phase NaYF4 (β-phase) nanocrystals (NCs) exhibit strong luminescence via an upconversion process compared to cubic NaYF4 (α-phase) NCs. However, in Ce(3+) /Ln(3+) -doped NaYF4 NCs (Ln=Tm, Tb, Sm, Dy) the α-phase NaYF4 NCs shows strong luminescence compared to their counterpart β-phase NCs despite the latter being much larger in size. This is attributed to comparatively large overlap between Ce(3+) ions emission band with excited energy levels of those Ln(3+) ions in α-phase compared to β-phase NCs...
December 1, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27906024/rate-of-initial-highly-active-anti-retroviral-therapy-regimen-change-and-its-predictors-among-adult-hiv-patients-at-university-of-gondar-referral-hospital-northwest-ethiopia-a-retrospective-follow-up-study
#16
Degefaye Zelalem Anlay, Zinahbizu Abay Alemayehu, Berihun Assefa Dachew
BACKGROUND: Regimen change is a major challenge for the sustainability of human immunodeficiency virus (HIV) treatment program. In a resource limited setting where treatment options are limited, designing strategies to increase the durability of original regimen are essential. However, information's on rate of initial regimen change and its predictors is scarce in Ethiopia. Therefore, the purpose of this study was to assess the rate of initial highly active anti retroviral therapy (HAART) regimen change and its predictors among adult HIV patients at the University of Gondar Referral Hospital, Northwest Ethiopia...
February 17, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906018/hiv-sero-discordance-among-married-hiv-patients-initiating-anti-retroviral-therapy-in-northern-vietnam
#17
Vu Van Tam, Do Duy Cuong, Tobias Alfven, Ho Dang Phuc, Nguyen Thi Kim Chuc, Nguyen Phuong Hoa, Vinod Diwan, Mattias Larsson
BACKGROUND: In many countries in Asia, the HIV epidemic is in a concentrated phase, with high prevalence in certain risk groups, such as men who inject drugs. There is also a rapid increase of HIV among women. The latter might be due to high levels of sero-discordant couples and increasing transmission from male to female partners over time. METHODS: All adult married patients initiating antiretroviral treatment at four out-patient clinics in Quang Ninh province in north-eastern Vietnam between 2007 and 2009 were asked to participate in the study...
November 15, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906009/current-trends-and-intricacies-in-the-management-of-hiv-associated-pulmonary-tuberculosis
#18
REVIEW
Narendran Gopalan, Padmapriyadarsini Chandrasekaran, Soumya Swaminathan, Srikanth Tripathy
Human immunodeficiency virus (HIV) epidemic has undoubtedly increased the incidence of tuberculosis (TB) globally, posing a formidable global health challenge affecting 1.2 million cases. Pulmonary TB assumes utmost significance in the programmatic perspective as it is readily transmissible as well as easily diagnosable. HIV complicates every aspect of pulmonary tuberculosis from diagnosis to treatment, demanding a different approach to effectively tackle both the diseases. In order to control these converging epidemics, it is important to diagnose early, initiate appropriate therapy for both infections, prevent transmission and administer preventive therapy...
September 26, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27906006/integrated-therapy-for-hiv-and-tuberculosis
#19
REVIEW
Weerawat Manosuthi, Surasak Wiboonchutikul, Somnuek Sungkanuparph
Tuberculosis (TB) has been the most common opportunistic infection and cause of mortality among HIV-infected patients, especially in resource-limited countries. Clinical manifestations of TB vary and depend on the degree of immunodeficiency. Sputum microscopy and culture with drug-susceptibility testing are recommended as a standard method for diagnosing active TB. TB-related mortality in HIV-infected patients is high especially during the first few months of treatment. Integrated therapy of both HIV and TB is feasible and efficient to control the diseases and yield better survival...
May 12, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905997/the-adult-prevalence-of-hiv-in-zambia-results-from-a-population-based-mobile-testing-survey-conducted-in-2013-2014
#20
Pascalina Chanda-Kapata, Nathan Kapata, Eveline Klinkenberg, Ngosa William, Liwewe Mazyanga, Katoba Musukwa, Elizabeth Chizema Kawesha, Felix Masiye, Peter Mwaba
OBJECTIVE: To estimate the adult prevalence of HIV among the adult population in Zambia and determine whether demographic characteristics were associated with being HIV positive. METHODS: A cross sectional population based survey to asses HIV status among participants aged 15 years and above in a national tuberculosis prevalence survey. Counselling was offered to participants who tested for HIV. The prevalence was estimated using a logistic regression model. Univariate and multivariate associations of social demographic characteristics with HIV were determined...
January 19, 2016: AIDS Research and Therapy
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