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https://www.readbyqxmd.com/read/29126235/clinical-significance-of-interferon-%C3%AE-neutralizing-autoantibodies-against-disseminated-nontuberculous-mycobacterial-disease
#1
Ami Aoki, Takuro Sakagami, Kazutaka Yoshizawa, Kenjiro Shima, Mio Toyama, Yoshinari Tanabe, Hiroshi Moro, Nobumasa Aoki, Satoshi Watanabe, Toshiyuki Koya, Takashi Hasegawa, Kozo Morimoto, Atsuyuki Kurashima, Yoshihiko Hoshino, Bruce C Trapnell, Toshiaki Kikuchi
Background: Interferon-γ neutralizing autoantibodies (nIFNγ-autoAb) are reported in patients with disseminated nontuberculous mycobacteria (NTM) infection and may function by increasing the infection risk. Notwithstanding, the prevalence of nIFNγ-autoAb as well as the clinical presentation, diagnosis, and natural history, of disseminated NTM infection in these patients is poorly understood. Methods: In this retrospective observational study, data and sera for 331 Japanese subjects with mycobacterial infection were collected and analyzed...
November 8, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29109708/differential-identification-of-mycobacterial-species-using-high-resolution-melting-analysis
#2
Azar D Khosravi, Mohammad Hashemzadeh, Abdolrazagh Hashemi Shahraki, Ali Teimoori
Infections caused by non-tuberculous mycobacteria (NTM) is increasing wordwide. Due to the difference in treatment of NTM infections and tuberculosis, rapid species identification of mycobacterial clinical isolates is necessary for the effective management of mycobacterial diseases treatment and their control strategy. In this study, a cost-effective technique, real-time PCR coupled with high-resolution melting (HRM) analysis, was developed for the differentiation of Mycobacterial species using a novel rpoBC sequence...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29109010/a-novel-isothermal-amplification-based-method-to-detect-mycobacterium-tuberculosis-complex
#3
Dongxin Liu, Bing Zhao, Xichao Ou, Huiwen Zheng, Aijing Ma, Wencong He, Shengfen Wang, Yang Zhou, Hui Xia, Yang Zheng, Ping Hou, Guangxue He, Yanlin Zhao
Mycobacterium tuberculosis (MTB) is the causative agent of pulmonary tuberculosis. Rapid and accurate diagnosis is crucial to tuberculosis control and prevention. A series of diagnostic methods has been available for MTB detection; however, new rapid, simple and affordable methods are needed. In this study, a multiple cross displacement amplification (MCDA)-based assay was developed to detect the IS6110 gene of the M. tuberculosis complex. Hydroxy naphthol blue (HNB), a colorimetric indicator, was used to detect amplification products...
November 3, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/29098128/hot-tub-lung-a-diagnostic-challenge
#4
Hassaan Yasin, William E Mangano, Paras Malhotra, Ali Farooq, Hesham Mohamed
Hot tub lung (HTL) is a granulomatous lung disease thought to occur as a result of a hypersensitivity response to non-tuberculous mycobacteria (NTM). Typical radiographic findings are diffuse micronodular and/or ground glass opacities. We report an interesting case of HTL that presented with unique radiographic features, making its diagnosis a predicament. A 56-year-old immunocompetent female with chronic dyspnea and dry cough was found to have subcentimeter cavitary nodules, predominantly in the upper lung zones...
August 27, 2017: Curēus
https://www.readbyqxmd.com/read/29092717/routinely-detected-indicators-in-plasma-have-a-predictive-effect-on-the-identification-of-hiv-infected-patients-with-non-tuberculous-mycobacterial-and-tuberculous-infections
#5
Ren-Tian Cai, Feng-Xue Yu, Zhen Tao, Xue-Qin Qian, Jun Chen, Hong-Zhou Lu
BACKGROUND: It is difficult to quickly distinguish non-tuberculous mycobacterial (NTM) infection from tuberculosis (TB) infection in human immunodeficiency virus (HIV)-infected patients because of many similarities between these diseases. A simple and effective way to determine the differences using routine blood tests is necessary in developing countries. METHODS: A retrospective cohort study was conducted to recruit HIV-infected patients with either NTM infection or TB infection diagnosed for the first time according to mycobacterial culture and microscopic identification from May 2010 to March 2016...
November 2, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29076443/-a-toddler-with-a-red-swelling-in-the-neck
#6
S Willemse, M Oomens, L Karssemakers, J de Lange
BACKGROUND: The differential diagnosis in a child with a swelling in the neck is broad. Chronic lymphadenopathy in children quite often leads to extensive blood tests. Cervicofacial non-tuberculous mycobacterial (NTM) lymphadenitis is, however, not revealed by blood tests. It is a rare condition, which is mostly seen in young children. CASE DESCRIPTION: A 4-year-old girl had a 9-week history of a swelling in her neck; the skin covering the swelling had been red and flaking for the past week...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29071482/-nontuberculous-mycobacterial-infections
#7
REVIEW
A Nowag, M Platten, G Plum, P Hartmann
Nontuberculous mycobacterial (NTM) are found ubiquitously in the environment and are usually of low pathogenicity. Infection occurs via inhalation of aerosols, and some species may cause severe infections. The incidence of NTM infections is rising worldwide. The risk of developing NTM disease depends on the susceptibility of the host as well as the frequency and duration of exposure. In addition to congenital immune deficiencies and immunosuppressive therapy, structural lung and systemic diseases, including rheumatoid arthritis (RA), are associated with an increased risk for NTM infections...
November 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/29067624/are-guidelines-on-the-management-of-non-tuberculous-mycobacteria-lung-infections-respected-and-what-are-the-consequences-for-patients-a-french-retrospective-study-from-2007-to-2014
#8
N El-Zeenni, S Chanoine, C Recule, J-P Stahl, M Maurin, B Camara
Diagnosis and treatment of lung infections caused by non-tuberculous mycobacteria (NTM) remain challenging. Adherence of the clinicians to the American Thoracic Society (ATS) and the Infectious Diseases Society of America (IDSA) 2007 guidelines is often incomplete. Between 2007 and 2014, in Grenoble Alpes University Hospital, France, 132 patients had NTM-positive cultures from lower respiratory tract (LRT) samples. We retrospectively collected diagnosis, treatment, and outcome data of patients, and evaluated the adherence of clinicians to ATS/IDSA guidelines and the consequences of patients' prognoses...
October 24, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29063147/importance-of-local-and-regional-scales-in-shaping-mycobacterial-abundance-in-freshwater-lakes
#9
Adélaïde Roguet, Claire Therial, Arnaud Catherine, Adèle Bressy, Gilles Varrault, Lila Bouhdamane, Viet Tran, Bruno J Lemaire, Brigitte Vincon-Leite, Mohamed Saad, Laurent Moulin, Françoise S Lucas
Biogeographical studies considering the entire bacterial community may underestimate mechanisms of bacterial assemblages at lower taxonomic levels. In this context, the study aimed to identify factors affecting the spatial and temporal dynamic of the Mycobacterium, a genus widespread in aquatic ecosystems. Nontuberculous mycobacteria (NTM) density variations were quantified in the water column of freshwater lakes at the regional scale (annual monitoring of 49 lakes in the Paris area) and at the local scale (2-year monthly monitoring in Créteil Lake) by real-time quantitative PCR targeting the atpE gene...
October 23, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/29059250/causative-species-of-nontuberculous-mycobacterial-lung-disease-and-comparative-investigation-on-clinical-features-of-mycobacterium-abscessus-complex-disease-a-retrospective-analysis-for-two-major-hospitals-in-a-subtropical-region-of-japan
#10
COMPARATIVE STUDY
Hiroaki Nagano, Takeshi Kinjo, Yuichiro Nei, Shin Yamashiro, Jiro Fujita, Tomoo Kishaba
Nontuberculous mycobacteria (NTM) lung disease is increasing globally. Although the etiological epidemiology of NTM is different across regions, Mycobacterium avium complex (MAC) is the leading cause of NTM lung disease in most countries, including mainland Japan. Okinawa is located in the southernmost region of Japan and is the only prefecture categorized as a subtropical region in Japan, it is therefore likely the etiological epidemiology of NTM lung disease is different from mainland Japan. From 2009 to 2015, the medical records of patients, with respiratory specimens positive for NTMs, visiting or admitted to two Okinawan hospitals, were retrospectively analyzed...
2017: PloS One
https://www.readbyqxmd.com/read/29054887/introducing-the-new-bts-guideline-management-of-non-tuberculous-mycobacterial-pulmonary-disease-ntm-pd
#11
EDITORIAL
Charles S Haworth, R Andres Floto
The new BTS Guidelines for the management of non-tuberculous mycobacterial pulmonary disease combine the best available evidence with expert consensus to generate a set of pragmatic Guidelines, published as a supplement to this issue of Thorax, to assist in the management of these challenging infections.
November 2017: Thorax
https://www.readbyqxmd.com/read/29054853/british-thoracic-society-guidelines-for-the-management-of-non-tuberculous-mycobacterial-pulmonary-disease-ntm-pd
#12
Charles S Haworth, John Banks, Toby Capstick, Andrew J Fisher, Thomas Gorsuch, Ian F Laurenson, Andrew Leitch, Michael R Loebinger, Heather J Milburn, Mark Nightingale, Peter Ormerod, Delane Shingadia, David Smith, Nuala Whitehead, Robert Wilson, R Andres Floto
No abstract text is available yet for this article.
November 2017: Thorax
https://www.readbyqxmd.com/read/29048292/pulmonary-versus-nonpulmonary-nontuberculous-mycobacteria-ontario-canada
#13
Sarah K Brode, Alex Marchand-Austin, Frances B Jamieson, Theodore K Marras
In Ontario, Canada, during 1998-2010, nontuberculous mycobacteria (NTM) from pulmonary sites comprised 96% of species/patient combinations isolated; annual rates of isolation and cases increased steadily. NTM isolates from nonpulmonary sites comprised 4% of species/patient combinations; annual rates and cases were temporally stable. NTM increases were driven exclusively by pulmonary isolates and disease.
November 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29040079/identification-of-nontuberculous-mycobacteria-isolated-from-hospital-water-by-sequence-analysis-of-the-hsp65-and-16s-rrna-genes
#14
Mehdi Roshdi Maleki, Hossein Samadi Kafil, Naser Harzandi, Seyyed Reza Moaddab
Nontuberculous mycobacteria (NTM) have emerged as an important cause of opportunistic nosocomial infections. NTM has frequently been isolated from hospital water distribution systems. The aim of this study was to survey the risk of NTM infections and determine the prevalence of NTM species in the hospital water distribution systems in Tabriz, Iran. One hundred and twenty samples of water from different sources of Tabriz hospitals were collected. The samples were filtered through 0.45-µm pore size membranes and decontaminated with 0...
October 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/29040071/prevalence-and-direct-costs-of-emergency-department-visits-and-hospitalizations-for-selected-diseases-that-can-be-transmitted-by-water-united-states
#15
E A Adam, S A Collier, K E Fullerton, J W Gargano, M J Beach
National emergency department (ED) visit prevalence and costs for selected diseases that can be transmitted by water were estimated using large healthcare databases (acute otitis externa, campylobacteriosis, cryptosporidiosis, Escherichia coli infection, free-living ameba infection, giardiasis, hepatitis A virus (HAV) infection, Legionnaires' disease, nontuberculous mycobacterial (NTM) infection, Pseudomonas-related pneumonia or septicemia, salmonellosis, shigellosis, and vibriosis or cholera). An estimated 477,000 annual ED visits (95% CI: 459,000-494,000) were documented, with 21% (n = 101,000, 95% CI: 97,000-105,000) resulting in immediate hospital admission...
October 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/29038903/-nontuberculous-mycobacteria-in-sputum-recommendations-for-diagnosis-and-treatment
#16
REVIEW
J Rademacher
Pulmonary diseases caused by nontuberculous mycobacteria (NTM) have increased over the last years and decades in Germany and also worldwide. Because the disease is more frequent in patients with immunodeficiencies and chronic respiratory diseases, e.g. bronchiectasis, advanced chronic obstructive lung disease (COPD) and cystic fibrosis (CF), an infection with mycobacteria should always be considered in this patient group. The detection in sputum alone is not an indication for treatment but the correct diagnosis should be based on the appropriate clinical symptoms as well as radiological and microbiological criteria...
November 2017: Der Internist
https://www.readbyqxmd.com/read/29033435/clinical-features-of-nontuberculous-mycobacterial-pleurisy-a-review-of-12-cases
#17
Maiko Naito, Toshiya Maekura, Yu Kurahara, Masahiro Tahara, Naoya Ikegami, Yohei Kimura, Shoko Sonobe, Takehiko Kobayashi, Shojiro Minomo, Taisuke Tsuji, Kazunari Tsuyuguchi, Seiji Hayashi, Katsuhiro Suzuki
Objective The incidence of pulmonary nontuberculous mycobacterial (NTM) infections has increased in recent decades. Nevertheless, NTM pleurisy is still a rare disease. The objective of the present study was to elucidate the clinical features and outcomes of NTM pleurisy. Methods A retrospective study was undertaken of consecutive patients whose pleural effusion culture yielded NTM, from 2002 to 2016 at a respiratory hospital in Japan. The clinical features, treatment, and outcomes of these patients were analyzed...
October 16, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29017528/first-case-of-mycobacterium-marseillense-lymphadenitis-in-a-child
#18
A Azzali, C Montagnani, M T Simonetti, G Spinelli, M de Martino, L Galli
BACKGROUND: Nontuberculous mycobacteria (NTM) are pathogens that commonly affect the paediatric population and its most frequent manifestation is a cervicofacial lymphadenopathy. With the improvement of technologies, new species have been recently identified. CASE PRESENTATION: We report the first case of NMT lymphadenitis in a child caused by Mycobacterium marseillense, a newly described species belonging to Mycobacterium avium complex. CONCLUSIONS: Improving the identification of these newly discovered mycobacteria, further information will be available about their clinical involvement and their best treatment...
October 10, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/29016684/performance-of-the-xpert-mtb-rif-assay-for-the-diagnosis-of-pulmonary-tuberculosis-and-rifampin-resistance-in-a-low-incidence-high-resource-setting
#19
Jason P Rice, Marva Seifert, Kathleen S Moser, Timothy C Rodwell
Performance of the Xpert MTB/RIF assay, designed to simultaneously detect Mycobacterium tuberculosis complex (MTBC) and rifampin (RIF) resistance, has been well documented in low-resource settings with high TB-incidence. However, few studies have assessed its accuracy in low TB incidence settings. We evaluated the performance of Xpert MTB/RIF using clinical sputum specimens routinely collected from suspect pulmonary TB patients over a 4-year time period in San Diego County, California. Xpert MTB/RIF results were compared to acid-fast bacilli (AFB) smear microscopy, mycobacterial culture, and phenotypic drug susceptibility testing (DST)...
2017: PloS One
https://www.readbyqxmd.com/read/28992819/tb-pcr-and-drug-resistance-pattern-in-balf-in-smear-negative-active-pulmonary-tb
#20
K Chavalertsakul, V Boonsarngsuk, S Saengsri, P Santanirand
<h2>SETTING:</h2>A tertiary referral hospital in Bangkok, Thailand.<h2>OBJECTIVES:</h2>To evaluate the efficacy of a bronchoalveolar lavage fluid (BALF) tuberculosis (TB) polymerase chain reaction (PCR) assay for the diagnosis of sputum smear-negative pulmonary TB (PTB) and the usefulness of a drug-resistant (DR) TB-PCR assay compared with standard drug susceptibility testing (DST).<h2>DESIGN:</h2>BALF samples from 918 patients with acid-fast bacilli (AFB) negative sputum smears who underwent bronchoscopy for diagnostic evaluations of pulmonary diseases were prospectively determined for specific genetic elements of TB using the Anyplex(TM) MTB/NTM Real-Time Detection kit...
October 9, 2017: International Journal of Tuberculosis and Lung Disease
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