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https://www.readbyqxmd.com/read/28345545/diagnostic-significance-of-mycobacterium-tuberculosis-t-cell-assays-for-active-tuberculosis
#1
Wei-Xia Xuan, Ting-Ting Lu, Zheng Wang, Yun-Xia An, Xiao-Ju Zhang
BACKGROUND: Active tuberculosis (TB) with negative results of sputum smear is difficult to be identified. Till now, there is no effective and noninvasive diagnostic method. This study evaluated the diagnostic power of Mycobacterium tuberculosis T-cell (T.SPOT®.TB) assays for active TB. METHODS: We retrospectively screened 450 suspected TB patients that were hospitalized in the Respiratory Department of Henan Province People's Hospital from June 2015 to June 2016...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28340708/phosphoserine-imprinted-nanosensor-for-detection-of-cancer-antigen-125
#2
Sibel Büyüktiryaki, Rıdvan Say, Adil Denizli, Arzu Ersöz
Cancer antigen 125 (CA 125) is widely used as diagnostic biomarker for ovarian cancer. Change in the concentration level of CA 125 is associated with disease progression or regression. CA 125 posseses a phosphorylation site and protein backbone is phosphorylated on serine, before secretion. In this study, we have developed an imprinting method for CA 125 recognition and determination. In this method, methacryloyl antipyrine europium (III) [(MAAP)2-Eu(III)] and methacryloyl antipyrine terbium (III) [(MAAP)2-Tb(III)] have been used as new metal-chelating monomers via metal coordination-chelation interactions...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28339465/comparative-accuracy-of-the-reba-mtb-mdr-and-hain-mtbdrplus-line-probe-assays-for-the-detection-of-multidrug-resistant-tuberculosis-a-multicenter-non-inferiority-study
#3
Joshua Havumaki, Doris Hillemann, Nazir Ismail, Shaheed Vally Omar, Sophia B Georghiou, Samuel G Schumacher, Catharina Boehme, Claudia M Denkinger
INTRODUCTION: Despite recent diagnostic advances, the majority of multidrug-resistant tuberculosis (MDR-TB) cases remain undiagnosed. Line probes assays (LiPAs) hold great promise to curb the spread of MDR-TB as they can rapidly detect MDR-TB even when laboratory infrastructure is limited, yet few of these assays are currently widely available or supported by World Health Organization (WHO) policy. METHODS: The aim of this prospective, blinded, non-inferiority study was to compare the performance of YD Diagnostics REBA MTB MDR LiPA (YD) to the WHO-endorsed Hain MTBDRplus V1 LiPA (Hain V1) for the detection of rifampicin and isoniazid resistance...
2017: PloS One
https://www.readbyqxmd.com/read/28337993/evaluation-of-5-novel-protein-biomarkers-for-the-rapid-diagnosis-of-pulmonary-and-extra-pulmonary-tuberculosis-preliminary-results
#4
Amit Singh, Anil Kumar Gupta, Krishnamoorthy Gopinath, Pawan Sharma, Sarman Singh
Improved methods are required for the early and accurate diagnosis of tuberculosis, especially in the patients with smear-negative disease. Several biomarkers have been tried but most have shown poor sensitivity or specificity. In present study we aimed to evaluate the diagnostic utility of five novel antigens identified earlier by us. This is an initial study conducted on 250 subjects. The five recombinant antigens, named as rSS1 (Rv2145c), rSS2 (Rv0164), rSS3 (Rv1437), rSS4 (Rv1827) and rSS5 (Rv2970c), were expressed in pQE-30 expression vector, purified and their sero-diagnostic efficacy was evaluated in an unblinded manner using dot-blot and ELISA methods...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335816/diagnostic-delay-and-associated-factors-among-patients-with-pulmonary-tuberculosis-in-dar-es-salaam-tanzania
#5
Khadija Said, Jerry Hella, Grace Mhalu, Mary Chiryankubi, Edward Masika, Thomas Maroa, Francis Mhimbira, Neema Kapalata, Lukas Fenner
BACKGROUND: Tanzania is among the 30 countries with the highest tuberculosis (TB) burdens. Because TB has a long infectious period, early diagnosis is not only important for reducing transmission, but also for improving treatment outcomes. We assessed diagnostic delay and associated factors among infectious TB patients. METHODS: We interviewed new smear-positive adult pulmonary TB patients enrolled in an ongoing TB cohort study in Dar es Salaam, Tanzania, between November 2013 and June 2015...
March 24, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28334030/measuring-mortality-due-to-hiv-associated-tuberculosis-among-adults-in-south-africa-comparing-verbal-autopsy-minimally-invasive-autopsy-and-research-data
#6
Aaron S Karat, Mpho Tlali, Katherine L Fielding, Salome Charalambous, Violet N Chihota, Gavin J Churchyard, Yasmeen Hanifa, Suzanne Johnson, Kerrigan McCarthy, Neil A Martinson, Tanvier Omar, Kathleen Kahn, Daniel Chandramohan, Alison D Grant
BACKGROUND: The World Health Organization (WHO) aims to reduce tuberculosis (TB) deaths by 95% by 2035; tracking progress requires accurate measurement of TB mortality. International Classification of Diseases (ICD) codes do not differentiate between HIV-associated TB and HIV more generally. Verbal autopsy (VA) is used to estimate cause of death (CoD) patterns but has mostly been validated against a suboptimal gold standard for HIV and TB. This study, conducted among HIV-positive adults, aimed to estimate the accuracy of VA in ascertaining TB and HIV CoD when compared to a reference standard derived from a variety of clinical sources including, in some, minimally-invasive autopsy (MIA)...
2017: PloS One
https://www.readbyqxmd.com/read/28331043/world-health-organization-treatment-guidelines-for-drug-resistant-tuberculosis-2016-update
#7
Dennis Falzon, Holger J Schünemann, Elizabeth Harausz, Licé González-Angulo, Christian Lienhardt, Ernesto Jaramillo, Karin Weyer
Antimicrobial resistance is a major global concern. Tuberculosis (TB) strains resistant to rifampicin and other TB medicines challenge patient survival and public health. The World Health Organization (WHO) has published treatment guidelines for drug-resistant TB since 1997 and last updated them in 2016 based on reviews of aggregated and individual patient data from published and unpublished studies. An international expert panel formulated recommendations following the GRADE approach. The new WHO guidelines recommend a standardised 9-12 months shorter treatment regimen as first choice in patients with multidrug- or rifampicin-resistant TB (MDR/RR-TB) strains not resistant to fluoroquinolones or second-line injectable agents; resistance to these two classes of core second-line medicines is rapidly detectable with molecular diagnostics also approved by WHO in 2016...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28328809/infectious-diseases-prevalence-vaccination-coverage-and-diagnostic-challenges-in-a-population-of-internationally-adopted-children-referred-to-a-tertiary-care-children-s-hospital-from-2009-to-2015
#8
Sara Sollai, Francesca Ghetti, Leila Bianchi, Maurizio de Martino, Luisa Galli, Elena Chiappini
Infectious diseases are common in internationally adopted children (IAC).With the objective to evaluate infectious diseases prevalence in a large cohort of IAC and to explore possible risk factors for tuberculosis (TB) and parasitic infections, clinical and laboratory data at first screening visit of all IAC (<18 years) consecutively referred to our Center in 2009 to 2015 were collected and analyzed.In total, 1612 children (median age: 5.40 years; interquartile range: 3.00-7.90) were enrolled, 123/1612 (7...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28323150/systematic-expression-profiling-analysis-mines-dys-regulated-modules-in-active-tuberculosis-based-on-re-weighted-protein-protein-interaction-network-and-attract-algorithm
#9
Ying Sun, Yan Weng, Ying Zhang, Xiang Yan, Lei Guo, Jia Wang, Xin Song, Ying Yuan, Fu-Ye Chang, Chun-Ling Wang
About 90% of tuberculosis (TB) patients latently infected with Mycobacterium tuberculosis (Mtb) show no symptoms, yet have a 10% chance in lifetime to progress active TB. Nevertheless, current diagnosis approaches need improvement in efficiency and sensitivity. The objective of this work was to detect potential signatures for active TB to further improve the understanding of the biological roles of functional modules involved in this disease. First, targeted networks of active TB and control groups were established via re-weighting protein-protein interaction (PPI) networks using Pearson's correlation coefficient (PCC)...
March 18, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28320401/prevalence-of-tuberculous-lesion-in-cattle-slaughtered-in-mubende-district-uganda
#10
Daniel Pakasi Nalapa, Adrian Muwonge, Clovice Kankya, Francisco Olea-Popelka
BACKGROUND: The aim of this study was to estimate the prevalence of gross pathology suggestive of bovine tuberculosis (TB-like lesions) and evaluate animal's characteristics associated with the risk of having bovine TB-like lesions among cattle slaughtered in Mubende district in the Uganda cattle corridor. METHOD: We conducted a cross sectional study in which 1,576 slaughtered cattle in Mubende district municipal abattoir underwent post-mortem inspection between August 2013 and January 2014...
March 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28320384/diagnostic-accuracy-incremental-yield-and-prognostic-value-of-determine-tb-lam-for-routine-diagnostic-testing-for-tuberculosis-in-hiv-infected-patients-requiring-acute-hospital-admission-in-south-africa-a-prospective-cohort
#11
Stephen D Lawn, Andrew D Kerkhoff, Rosie Burton, Charlotte Schutz, Andrew Boulle, Monica Vogt, Ankur Gupta-Wright, Mark P Nicol, Graeme Meintjes
BACKGROUND: We previously reported that one-third of HIV-positive adults requiring medical admission to a South African district hospital had laboratory-confirmed tuberculosis (TB) and that almost two-thirds of cases could be rapidly diagnosed using Xpert MTB/RIF-testing of concentrated urine samples obtained on the first day of admission. Implementation of urine-based, routine, point-of-care TB screening is an attractive intervention that might be facilitated by use of a simple, low-cost diagnostic tool, such as the Determine TB-LAM lateral-flow rapid test for HIV-associated TB...
March 21, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28317811/performance-of-the-xpert-mtb-rif-assay-in-the-diagnosis-of-tuberculosis-in-formalin-fixed-paraffin-embedded-tissues
#12
Pascal Polepole, Mwila Kabwe, Mpanga Kasonde, John Tembo, Aaron Shibemba, Justin O'Grady, Nathan Kapata, Alimuddin Zumla, Matthew Bates
OBJECTIVE/BACKGROUND: Extrapulmonary tuberculosis (EPTB), which accounts for 10%-40% of the global burden of TB, with the highest incidence in Sub-Saharan Africa, is strongly associated with human immunodeficiency virus infection. Diagnosing EPTB is challenging, and recently, there has been a concerted effort to evaluate the latest molecular diagnostics for diagnosing TB in a range of specimen types. The Xpert MTB/RIF assay (Cepheid, Sunnyvale, CA, USA) is one such technology, which simultaneously detects Mycobacterium tuberculosis and rifampicin resistance...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317400/nanodiagnostics-for-tuberculosis-detection
#13
Hesham El-Samadony, Asma Althani, Mohamed Awad Tageldin, Hassan M E Azzazy
Introduction Tuberculosis (TB) is a leading killer worldwide. End TB strategy aims at ending the TB epidemic by 2030. Early, accurate, and affordable diagnosis represents a cornerstone to achieve this goal. Innovative strategies for TB diagnostics have been introduced, however the ideal assay is yet unavailable and conventional methods remain necessary for diagnosis. Unique properties of nanoparticles (NPs) have allowed their utilization in TB detection via targeting disease biomarkers. Area Covered Until now, around thirty-five TB NP-based assays have been partially or fully characterized...
March 20, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28316991/interferon-gamma-release-assay-performance-of-cerebrospinal-fluid-and-peripheral-blood-in-tuberculous-meningitis-in-china
#14
Liping Pan, Fei Liu, Jinli Zhang, Xinting Yang, Shiqi Zheng, Jing Li, Hongyan Jia, Xiaoyou Chen, Mengqiu Gao, Zongde Zhang
The aim of this study was to examine the performance of T-SPOT.TB on cerebrospinal fluid (CSF) and peripheral blood (PB) in diagnosis of tuberculous meningitis (TBM) in China. Of 100 patients with presumed TBM prospectively enrolled from Sep 2012 to Oct 2014, 53 were TBM (21 definite and 32 probable TBM cases) and 37 were non-TBM cases; the other 10 patients were excluded from analysis due to inconclusive diagnosis, no sufficient CSF samples, or incomplete follow-up. T-SPOT.TB on CSF and PB and routine laboratory tests of CSF were performed simultaneously...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28303781/delays-in-diagnosis-and-treatment-of-pulmonary-tuberculosis-in-afb-smear-negative-patients-with-pneumonia
#15
Z X Zhang, L-H Sng, Y Yong, L M Lin, T W Cheng, N H Seong, F K Yong
<h2>BACKGROUND:</h2><p>Diagnostic and treatment delays increase the severity and transmission of pulmonary tuberculosis (PTB). This study aimed to evaluate TB diagnostic and treatment delays in acid-fast bacilli (AFB) smear-negative patients.</p><h2>METHODS:</h2><p>This was a retrospective observational study. Patients with positive AFB culture of <i>Mycobacterium tuberculosis</i> complex (MTC) were selected from among hospitalised patients with a diagnosis of pneumonia...
March 16, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28298419/total-body-imaging-transforming-the-role-of-positron-emission-tomography
#16
REVIEW
Simon R Cherry, Ramsey D Badawi, Joel S Karp, William W Moses, Pat Price, Terry Jones
The first total-body positron emission tomography (TB-PET) scanner represents a radical change for experimental medicine and diagnostic health care.
March 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28292305/possible-misdiagnosis-of-hiv-associated-lymphoma-as-tuberculosis-among-patients-attending-uganda-cancer-institute
#17
Paul Buyego, Lydia Nakiyingi, Henry Ddungu, Stephen Walimbwa, Damalie Nalwanga, Steven J Reynolds, Rosalind Parkes-Ratanshi
BACKGROUND: Early diagnosis of HIV associated lymphoma is challenging because the definitive diagnostic procedure of biopsy, requires skills and equipment that are not readily available. As a consequence, diagnosis may be delayed increasing the risk of mortality. We set out to determine the frequency and risk factors associated with the misdiagnosis of HIV associated lymphoma as tuberculosis (TB) among patients attending the Uganda Cancer Institute (UCI). METHODS: A retrospective cohort study design was used among HIV patients with associated lymphoma patients attending the UCI, Kampala, Uganda between February and March 2015...
March 14, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28285168/design-and-use-of-mouse-control-dna-for-dna-biomarker-extraction-and-pcr-detection-from-urine-application-for-transrenal-mycobacterium-tuberculosis-dna-detection
#18
Hali Bordelon, Keersten M Ricks, Megan E Pask, Patricia K Russ, Francesca Solinas, Mark L Baglia, Philip A Short, Andrew Nel, Jonathan Blackburn, Keertan Dheda, Carlos Zamudio, Tatiana Cáceres, David W Wright, Frederick R Haselton, April C Pettit
Urine samples are increasingly used for diagnosing infections including Escherichia coli, Ebola virus, and Zika virus. However, extraction and concentration of nucleic acid biomarkers from urine is necessary for many molecular detection strategies such as polymerase chain reaction (PCR). Since urine samples typically have large volumes with dilute biomarker concentrations making them prone to false negatives, another impediment for urine-based diagnostics is the establishment of appropriate controls particularly to rule out false negatives...
March 9, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28284260/tuberculosis-in-hiv-infected-south-african-children-with-complicated-severe-acute-malnutrition
#19
H Adler, M Archary, P Mahabeer, P LaRussa, R A Bobat
SETTING: Academic tertiary referral hospital in Durban, South Africa. OBJECTIVE: To describe the incidence and diagnostic challenges of tuberculosis (TB) in human immunodeficiency virus (HIV) infected children with severe acute malnutrition (SAM). DESIGN: Post-hoc analysis of a randomised controlled trial that enrolled antiretroviral therapy naïve, HIV-infected children with SAM. Trial records and hospital laboratory results were explored for clinical diagnoses and bacteriologically confirmed cases of TB...
April 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28284256/novel-interferon-gamma-assays-for-diagnosing-tuberculosis-in-young-children-in-india
#20
N Shaikh, A Gupte, S Dharmshale, S Pokkali, M Thakar, V J Upadhye, A A Ordonez, A Kinikar, N Gupte, V Mave, A Kagal, A Gupta, A Lalvani, R Paranjpe, R Bharadwaj, S K Jain
SETTING: The tuberculin skin test (TST) and interferon-gamma release assays (IGRAs) are used as supportive evidence to diagnose active tuberculosis (TB). Novel IGRAs could improve diagnosis, but data are lacking in young children. DESIGN: Children (age 5 years) with suspected TB were prospectively screened at a tertiary hospital in Pune, India; the children underwent TST, and standard (early secretory antigenic target 6 and culture filtrate protein 10) and enhanced (five additional novel antigens) enzyme-linked immunospot (ELISpot) assays...
April 1, 2017: International Journal of Tuberculosis and Lung Disease
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