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Interferon-gamma Release Assays in children's

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https://www.readbyqxmd.com/read/29731933/latent-tuberculosis-infection-diagnosis-and-treatment
#1
Biljana Ilievska-Poposka, Marija Metodieva, Maja Zakoska, Cveta Vragoterova, Dejan Trajkov
INTRODUCTION: Latent tuberculosis infection (LTBI) is defined as a state of persistent immune response to stimulation by Mycobacterium tuberculosis antigens without evidence of clinically manifested active tuberculosis (TB). Diagnosis and treatment for LTBI are important for TB, especially in high-risk populations. Tuberculin skin test (TST) and interferon-gamma release assays (IGRAs) are used to diagnose LTBI. AIM: The study aims to present the first results with IGRA test compared with TST in the screening of LTBI and the treatment results in the cases with LTBI in Macedonia...
April 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29642833/-management-and-treatment-difficulties-of-multi-drug-resistant-pulmonary-tuberculosis-in-a-pediatric-case
#2
Selda Hançerli Törün, Emine Manolya Acar, Ayper Somer, Gonca Erköse, Dilek Şatana, Zuhal Bayramoğlu, Emine Çalışkan, Zeki Kılıçaslan
Tuberculosis continues to be a major health problem worldwide. Multidrug resistant tuberculosis (MDR-TB) infection that occurs in childhood is caused by adult MDR-TB agents which are in circulation and resistant to primary drugs. In this case report a 17-month-old child with MDR-TB who was cured after a 24-month therapy regimen was presented. Physical examination of a 17-month-old girl admitted to the hospital with the cause of recurrent pneumonia revealed a rubbery lymphadenopathy less than 2 cm in the right upper cervical region...
January 2018: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29589578/universal-screening-for-latent-and-active-tuberculosis-tb-in-asylum-seeking-children-bochum-and-hamburg-germany-september-2015-to-november-2016
#3
Maya Mueller-Hermelink, Robin Kobbe, Benedikt Methling, Cornelius Rau, Ulf Schulze-Sturm, Isa Auer, Frank Ahrens, Folke Brinkmann
BackgroundIn Germany, the incidence of tuberculosis (TB) in children has been on the rise since 2009. High numbers of foreign-born asylum seekers have contributed considerably to the disease burden. Therefore, effective screening strategies for latent TB infection (LTBI) and active TB in asylum seeking children are needed. Aim: Our aim was to investigate the prevalence of LTBI and active TB in asylum seeking children up to 15 years of age in two geographic regions in Germany. Methods: Screening for TB was performed in children in asylum seeker reception centres by tuberculin skin test (TST) or interferon gamma release assay (IGRA)...
March 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29499726/varicella-zoster-virus-vaccination-in-immunosuppressed-children-with-rheumatic-diseases-using-a-pre-vaccination-check-list
#4
Fabian Speth, Claas H Hinze, Susanne Andel, Thomas Mertens, Johannes-Peter Haas
BACKGROUND: The goal of this study was to apply the varicella zoster virus (VZV) vaccine to patients with pediatric rheumatic diseases (PRD) at risk for severe chickenpox, without interrupting their current immunosuppression, including biological agents, using an immunological-based pre-vaccination checklist to assure safety. A pre-vaccination checklist was implemented to ensure adequate immune competence prior to immunization. METHODS: This prospective study included seronegative patients (VZV-IgG ≤200 mIU/ml) and patients who had previously received only a single dose of VZV vaccine...
March 2, 2018: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/29442397/tuberculin-skin-test-versus-interferon-gamma-release-assay-in-refugee-children-a-retrospective-cohort-study
#5
Chris Elliot, Ben Marais, Phoebe Williams, Paul Joshua, Sherri Towle, Graham Hart, Karen Zwi
AIM: The aim of this study was to assist clinicians evaluating refugee children for latent tuberculosis infection (LTBI) by comparing paired tuberculin skin test (TST) and Quantiferon Gold In-Tube (QGIT) test results with clinical management decisions and follow-up data in a large cohort of newly arrived refugee children. METHODS: This was a retrospective analysis of all refugee children (<15 years of age) evaluated for LTBI with both TST and interferon-γ release assay between 2007 and 2010 in the Illawarra-Shoalhaven region of New South Wales, Australia...
February 14, 2018: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29388291/comparison-of-tuberculin-skin-test-and-interferon-gamma-release-assay-for-diagnosis-of-latent-tuberculosis-infection-in-pediatric-candidates-of-renal-transplantation
#6
Shirin Sayyahfar, Faranak Davoodzadeh, Rozita Hoseini, Nahid Rahimzadeh, Hasan Otukesh
IGRA has been approved as an alternative in vitro test to diagnose Mycobacterium TB infection. This study aimed to assess the diagnostic value of TST in comparison with QFT assay to detect LTBI among Iranian children candidate for renal transplantation. This cross-sectional study was performed on 31 children who were candidate for renal transplantation admitted to Ali Asghar Children's Hospital and Rasoul Akram Hospital, Tehran, Iran, from 2013 to 2014. TST and QFT were performed for all patients. QFT was negative in all patients, while TST was positive only in one case...
March 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29259216/cytokine-profiling-in-healthy-children-shows-association-of-age-with-cytokine-concentrations
#7
Marie-Luise Decker, Verena Gotta, Sven Wellmann, Nicole Ritz
Cytokine-based diagnostic assays are increasingly used in research and clinical practice. Assays developed for adults such as the interferon-gamma release assay for tuberculosis show inferior performance in children. Limited evidence suggests that release of cytokines is influenced by age but normal ranges of cytokines in children are lacking. Whole blood of healthy children (0-12 years) undergoing elective/diagnostic procedures was stimulated with SEB, PHA, Candida albicans for 24 hours or left unstimulated...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29204099/tuberculosis-infection-in-children-with-proteinuria-nephrotic-syndrome
#8
Hanna Szymanik-Grzelak, Elżbieta Kuźma-Mroczkowska, Piotr Skrzypczyk, Teresa Bielecka, Iwona Kotula, Małgorzata Pańczyk-Tomaszewska
Children with nephrotic syndrome (NS) are at greater risk of infections than the general population, due to immunodeficiency in the course of the disease and the treatment. In this study we present 4 children (2 girls, 2 boys), mean age 7.6 ±5.1 years, with NS/proteinuria and latent tuberculosis in 3 children and lymph node tuberculosis in 1 child. The reasons for testing these children for tuberculosis (TB) were the evaluation of the epidemiological status before treatment with corticosteroids (GCS), leukopenia and the relapse of NS, and non-nephrotic proteinuria...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/29190430/evaluating-uk-national-guidance-for-screening-of-children-for-tb-a-prospective-multi-centre-study
#9
Beate Kampmann, James A Seddon, James Paton, Zohreh Nademi, Denis Keane, Bhanu Williams, Amanda Williams, Sue Liebeschutz, Anna Riddell, Jolanta Bernatoniene, Sanjay Patel, Nuria Martinez, Paddy McMaster, Robindra Basu-Roy, Steven B Welch
Rationale and Objective In order to identify infected contacts of tuberculosis (TB) cases, the UK National Institute for Health and Care Excellence (NICE) recommended the addition of interferon-gamma release assays (IGRA) to the tuberculin skin test (TST) in its 2006 TB guidelines. Treatment for TB infection was no longer recommended for children screened TST-positive but IGRA-negative. We carried out a cohort study to evaluate the risk of TB disease in this group. Methods Children exposed to an infectious case of TB in their household were recruited from 11 paediatric TB clinics...
November 30, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29187669/usefulness-of-the-combination-of-tuberculin-skin-test-and-interferon-gamma-release-assay-in-diagnosing-children-with-tuberculosis
#10
Hiroyuki Shimizu, Masaaki Mori
Japan is still designated as a medium incidence country, worldwide. Although the definitive diagnosis of tuberculosis is made by detecting pathogen from tissue specimens, collecting those from children is physically difficult. Therefore, we must frequently depend on the results of tuberculin skin test (TST) or interferon-gamma release assay (IGRA). However, the value of IGRA in diagnosing tuberculosis in infants remains unclear. We implemented TST and IGRA concurrently and examined the significance of combining these two tests by analyzing cases where conflicting results were evident from other tests...
November 2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29182688/interferon-gamma-release-assay-for-the-diagnosis-of-latent-tuberculosis-infection-a-latent-class-analysis
#11
Tan N Doan, Damon P Eisen, Morgan T Rose, Andrew Slack, Grace Stearnes, Emma S McBryde
BACKGROUND: Accurate diagnosis and subsequent treatment of latent tuberculosis infection (LTBI) is essential for TB elimination. However, the absence of a gold standard test for diagnosing LTBI makes assessment of the true prevalence of LTBI and the accuracy of diagnostic tests challenging. Bayesian latent class models can be used to make inferences about disease prevalence and the sensitivity and specificity of diagnostic tests using data on the concordance between tests. We performed the largest meta-analysis to date aiming to evaluate the performance of tuberculin skin test (TST) and interferon-gamma release assays (IGRAs) for LTBI diagnosis in various patient populations using Bayesian latent class modelling...
2017: PloS One
https://www.readbyqxmd.com/read/29140946/comparison-of-the-quantiferon-tb-gold-in-tube-assay-with-tuberculin-skin-test-for-the-diagnosis-of-latent-tuberculosis-infection-among-hiv-infected-and-uninfected-children
#12
COMPARATIVE STUDY
Walter Dehority, Rolando M Viani, Maria Rosario G Araneta, Graciano Lopez, Stephen A Spector
BACKGROUND: Diagnosis of latent tuberculosis infection (LTBI) is facilitated by tuberculin skin testing (TST) or interferon-gamma release assays such as the QuantiFERON TB Gold In-Tube (QTF-GIT) assays. Limited data exist on the utility of interferon-gamma release assays in HIV-infected children, which may be falsely negative due to immunosuppression. METHODS: A cross-sectional study comparing TST to QTF-GIT for the diagnosis of suspected LTBI was performed in children in Tijuana, Mexico, and in San Diego, California...
December 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29122311/-uveitis-diagnostic-work-up-recommendations-from-an-expert-committee
#13
P Sève, B Bodaghi, S Trad, J Sellam, D Bellocq, P Bielefeld, D Sène, G Kaplanski, D Monnet, A Brézin, M Weber, D Saadoun, P Cacoub, C Chiquet, L Kodjikian
INTRODUCTION: Diagnostic work-up of uveitis involves many uncertainties. Search for an etiology should take into account the epidemiology of uveitis and focus on the most severe diseases or those, which can be treated. This work was undertaken to establish recommendations for the diagnosis work-up of uveitis. METHODS: Recommendations were developed by a multidisciplinary panel of 15 experts, including internists, ophthalmologists and a rheumatologist and are based on a review of the literature with regard to effectiveness of investigations and the results of the ULISSE study, which is the first prospective study assessing the efficiency of a standardized strategy for the etiological diagnosis of uveitis...
November 6, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/29037906/uveitis-diagnostic-work-up-a-literature-review-and-recommendations-from-an-expert-committee
#14
REVIEW
Pascal Sève, Patrice Cacoub, Bahram Bodaghi, Salim Trad, Jérémie Sellam, David Bellocq, Philip Bielefeld, Damien Sène, Gilles Kaplanski, Dominique Monnet, Antoine Brézin, Michel Weber, David Saadoun, Christophe Chiquet, Laurent Kodjikian
PURPOSE: Diagnosis of uveitis is difficult. Etiologic investigations should take into account the epidemiology of uveitis and should focus on the most severe forms of the disease and those which can be treated. This study was undertaken to establish recommendations for the diagnosis of uveitis. METHODS: Recommendations were developed by a multidisciplinary panel of 14 experts, including internists, ophthalmologists, and rheumatologists, and are based on a review of the literature and the results of the ULISSE study, which was the first prospective study to assess the efficacy of a standardized strategy for the etiologic diagnosis of uveitis...
December 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28840843/interferon-gamma-release-assay-in-response-to-pe35-ppe68-proteins-a-promising-diagnostic-method-for-diagnosis-of-latent-tuberculosis
#15
Shima Mahmoudi, Babak Pourakbari, Setareh Mamishi
Tuberculosis control relies on the identification and preventive treatment of people who are latently infected with Mycobacterium tuberculosis (Mtb). PE/PPE proteins have been reported to elicit CD4 and/or CD8 responses either in the form of whole recombinant proteins or as individual peptides. Very few of the PE and PPE proteins have been previously tested for responses in patients with TB and healthy donors. This is the first study to evaluate the Interferon Gamma Release Assay (IGRA) after stimulation with PE35 and PPE68...
March 1, 2017: European Cytokine Network
https://www.readbyqxmd.com/read/28754530/tuberculosis-in-children-from-diagnosis-to-decision-to-treat
#16
S Ramos, R Gaio, F Ferreira, J Paulo Leal, S Martins, J Vasco Santos, I Carvalho, R Duarte
SETTING: Confirmation of tuberculosis (TB) in children is difficult, so clinicians use different procedures when deciding to treat. OBJECTIVE: Identify criteria to initiate and maintain TB treatment in children younger than 5 years-old, without diagnosis confirmation. DESIGN: A web-based survey was distributed by email to the corresponding authors of journal articles on childhood TB. The observations were clustered into disjoint groups, and analyzed by Ward's method...
November 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28722570/mycobacterium-tuberculosis-infection-in-close-childhood-contacts-of-adults-with-pulmonary-tuberculosis-is-increased-by-secondhand-exposure-to-tobacco
#17
COMPARATIVE STUDY
Ifedayo M O Adetifa, Lindsay Kendall, Simon Donkor, Moses D Lugos, Abdulrahman S Hammond, Patrick K Owiafe, Martin O C Ota, Roger H Brookes, Philip C Hill
Tobacco use is a major risk factor for tuberculosis (TB). Secondhand smoke (SHS) is also a risk factor for TB and to a lesser extent, Mycobacterium tuberculosis infection without disease. We investigated the added risk of M. tuberculosis infection due to SHS exposure in childhood contacts of TB cases in The Gambia. Participants were childhood household contacts aged ≤ 14 years of newly diagnosed pulmonary TB (PTB) cases. The intensity of exposure to the case was categorized according to whether contacts slept in the same room, same house, or a different house as the case...
August 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28284256/novel-interferon-gamma-assays-for-diagnosing-tuberculosis-in-young-children-in-india
#18
COMPARATIVE STUDY
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
https://www.readbyqxmd.com/read/28274215/comparing-interferon-gamma-release-assays-with-tuberculin-skin-test-for-identifying-latent-tuberculosis-infection-that-progresses-to-active-tuberculosis-systematic-review-and-meta-analysis
#19
REVIEW
Peter Auguste, Alexander Tsertsvadze, Joshua Pink, Rachel Court, Noel McCarthy, Paul Sutcliffe, Aileen Clarke
BACKGROUND: Timely and accurate identification of people with latent tuberculosis infection (LTBI) is important for controlling Mycobacterium tuberculosis (TB). There is no gold standard for diagnosis of LTBI. Screening tests such as interferon gamma release assays (IGRAs) and tuberculin skin test (TST) provide indirect and imperfect information. This systematic review compared two types of IGRAs QuantiFERON®-TB Gold In-Tube test (QFT-GIT) and T-SPOT.TB with TST for identification of LTBI by predicting progression to a diagnosis of active TB in three subgroups: children, immunocompromised people, and those recently arrived from countries with high TB burden...
March 9, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28225337/multiple-cytokines-for-the-detection-of-mycobacterium-tuberculosis-infection-in-children-with-tuberculosis
#20
N Nausch, C Lundtoft, G Schulz, H Henckel, E Mayatepek, B Fleischer, F M Marx, M Jacobsen
SETTING: Interferon-gamma (IFN-γ) release assays (IGRAs) play an important role in the diagnosis of Mycobacterium tuberculosis infection. However, in children with tuberculosis (TB), some studies have shown increased frequencies of false-negative or indeterminate IGRA results. OBJECTIVE: To analyse the spectrum of different cytokines to improve the diagnostic accuracy of IGRAs in latent tuberculous infection (LTBI) and active TB. DESIGN: We performed multiplex cytokine expression analysis of QuantiFERON® Gold In-Tube supernatants in children with active TB (n = 21) and disease-free contacts with (n = 15) and without LTBI (n = 12), to determine the sensitivity and specificity of the modified tests...
March 1, 2017: International Journal of Tuberculosis and Lung Disease
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