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extrapulmonary tuberculosis

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https://www.readbyqxmd.com/read/28539036/a-case-of-tuberculous-peritonitis-presenting-as-small-bowel-obstruction
#1
Hae Koo Kim, Sung Eun Kim, Moo In Park, Seun Ja Park, Won Moon, Jae Hyun Kim, Kyoungwon Jung, Yong Jin Nam
The peritoneum is one of the common extrapulmonary sites of tuberculosis infection. Patients with underlying end-stage renal or liver disease are frequently complicated by tuberculous peritonitis; however, the diagnosis of the tuberculous peritonitis is difficult due to its insidious nature, well as its variability in presentation and limitation of available diagnostic tests. Once diagnosed, the preferred treatment is usually antituberculous therapy in uncomplicated cases. However, surgical treatment may also be required for complicated cases, such as small bowel obstruction or perforation...
May 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28531231/utility-of-th1-cell-immune-responses-for-distinguishing-active-tuberculosis-from-non-active-tuberculosis-a-case-control-study
#2
Lifan Zhang, Xinhe Cheng, Sainan Bian, Yanhua Song, Qiang Li, Mengqiu Gao, Yueqiu Zhang, Xiaochun Shi, Xiaoqing Liu
Currently available Interferon-γ release assay (IGRA) cannot reliably differentiate active TB (ATB) from non-active TB (non-ATB). A study was performed to evaluate the value of Mycobacterium tuberculosis (MTB) specific Th1 cell immune responses which test IFN-γ and IL-2 simultaneous for differentiating ATB from non-ATB. Forty-nine newly diagnosed inpatients with ATB (26 pulmonary TB and 23 extrapulmonary TB) were enrolled as the ATB group. Forty-five volunteers with latent tuberculosis infection (LTBI) and twenty with evidence of previous TB were enrolled during the same period as the non-ATB group...
2017: PloS One
https://www.readbyqxmd.com/read/28530443/association-of-single-nucleotide-polymorphism-in-the-hepcidin-promoter-gene-with-susceptibility-to-extrapulmonary-tuberculosis
#3
Li Liang, Huijuan Liu, Jun Yue, Li-Rong Liu, Min Han, Liu-Lin Luo, Yan-Lin Zhao, Heping Xiao
BACKGROUND: Hepcidin is a 25-amino acid peptide produced by the liver in response to inflammation and iron overload. It is encoded by the hepcidin antimicrobial peptide (HAMP) gene and plays a key role in innate immunity. Previous studies have reported that a -582 A>G polymorphism in the HAMP promoter (HAMP-P) affects hepcidin expression, causing susceptibility to various bacterial and viral pathogens. However, it is not known whether the HAMP-P -582 A>G polymorphism is associated with tuberculosis (TB) susceptibility...
May 22, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28526681/adoptive-transfer-of-phosphoantigen-specific-%C3%AE-%C3%AE-t-cell-subset-attenuates-mycobacterium-tuberculosis-infection-in-nonhuman-primates
#4
Arwa Qaqish, Dan Huang, Crystal Y Chen, Zhuoran Zhang, Richard Wang, Shengpu Li, Enzhuoa Yang, Yang Lu, Michelle H Larsen, William R Jacobs, Lixia Qian, James Frencher, Ling Shen, Zheng W Chen
The dominant Vγ2Vδ2 T cell subset recognizes phosphoantigen and exists only in humans and nonhuman primates. Despite the discovery of γδ T cells >30 y ago, a proof-of-concept study has not been done to prove the principle that the Vγ2Vδ2 T cell subset is protective against Mycobacterium tuberculosis and other infections. In this study, we used an adoptive cell-transfer strategy to define the protective role of Vγ2Vδ2 T cells in a primate tuberculosis (TB) model. Vγ2Vδ2 T cells for adoptive transfer displayed central/effector memory and mounted effector functions, including the production of anti-M...
May 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28513865/diagnosis-of-tuberculosis-in-hiv-co-infected-individuals-current-status-challenges-and-opportunities-for-the-future
#5
REVIEW
P Méndez-Samperio
Tuberculosis (TB) remains one of the most important causes of death amongst people co-infected with human immunodeficiency virus (HIV). The diagnosis of TB remains challenging in HIV co-infected individuals, due to a high frequency of smear-negative disease and high rates of extrapulmonary TB. Accurate, ease of use, and rapid diagnosis of active TB is critical to the World Health Organization (WHO) End TB Strategy by 2050. Traditional laboratory techniques do not provide rapid and accurate results to effectively manage HIV co-infected patients...
May 17, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28500803/patients-delay-in-seeking-health-care-for-tuberculosis-diagnosis-in-east-gojjam-zone-northwest-ethiopia
#6
Mihret Asres, Molla Gedefaw, Amlsha Kahsay, Yemane Weldu
AbstractPatients' delay in seeking diagnosis is a major problem in the management of tuberculosis (TB). Relative to the burden of TB, there is lack of data on the magnitude of delays in seeking care and why patients fail to seek early care at health facilities in Ethiopia. A facility-based cross-sectional study was conducted from April to July 2013 in East Gojjam Zone, Amhara, Ethiopia, to assess patients' delays and associated factors in TB patients. Using simple random sampling, 605 (327 male and 278 female) participants were recruited...
May 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28492778/sociodemographic-clinical-and-epidemiological-aspects-of-tuberculosis-treatment-abandonment-in-pernambuco-brazil-2001-2014
#7
Marcelo Luiz Medeiros Soares, Nathália Alves Castro do Amaral, Amanda Correia Paes Zacarias, Leila Karina de Novaes Pires Ribeiro
OBJECTIVE: to describe abandonment rates according to sociodemographic, clinical and epidemiological characteristics of new tuberculosis cases being treated in Pernambuco State, Brazil. METHODS: this is a descriptive ecological study using data from the Information System for Notifiable Diseases from 2001 to 2014; the abandonment rate was calculated by the Regional Administration on Health (GERES). RESULTS: of the 57,015 new cases, 6,474 (11...
April 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28492125/influence-of-hiv-and-other-risk-factors-on-tuberculosis
#8
Sana Mahtab, David Coetzee
BACKGROUND: Tuberculosis (TB) notification in South Africa has increased six-fold over the past two decades, mainly because of the HIV epidemic. OBJECTIVES: To describe the sociodemographic and outcome characteristics of TB patients, and to identify risk factors associated with TB treatment outcomes stratified by HIV status. METHODS: A cross-sectional study was used to analyse data from the Cape Town Metro East geographical service area (GSA) electronic TB register (ETR...
April 25, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28487789/abdominopelvic-tuberculosis-with-a-frozen-section-analysis-consistent-with-ovarian-cancer
#9
Agrimaldo Martins-Filho, Paula Carolina Arvelos Crispim, Renata Margarida Etchebehere, Cristina da Cunha Hueb Barata de Oliveira, Eddie Fernando Candido Murta, Rosekeila Simões Nomelini
Pelvic tuberculosis is a type of extrapulmonary tuberculosis. The disease is accompanied by clinical and laboratory findings which may be unspecific and present aspects of other diseases, including gynecological malignancies. In this report, the authors presented a case of pelvic tuberculosis associated with peritoneal tuberculosis in a young woman exhibiting imaging and tumor markers consistent with ovarian neoplasm. An intraoperative frozen section analysis detected atypical cells that were suggestive of ovarian borderline or malignant epithelial neoplasia...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28487695/regulatory-t-cells-and-pro-inflammatory-responses-predominate-in-children-with-tuberculosis
#10
Elizabeth Whittaker, Mark Nicol, Heather J Zar, Beate Kampmann
BACKGROUND: Following infection with Mycobacterium tuberculosis (M.tb), children are more susceptible to develop disease particularly extrapulmonary disease than adults. The exact mechanisms required for containment of M.tb are not known, but would be important to identify correlates of protection. OBJECTIVE: To comprehensively analyze key immune responses to mycobacteria between HIV-negative children with extrapulmonary TB (EPTB) compared to children with pulmonary TB (PTB) or healthy controls...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28475709/matrix-degradation-in-human-immunodeficiency-virus-type-1-associated-tuberculosis-and-tuberculosis-immune-reconstitution-inflammatory-syndrome-a-prospective-observational-study
#11
Naomi F Walker, Katalin A Wilkinson, Graeme Meintjes, Liku B Tezera, Rene Goliath, Janique M Peyper, Rebecca Tadokera, Charles Opondo, Anna K Coussens, Robert J Wilkinson, Jon S Friedland, Paul T Elkington
Background.: Extensive immunopathology occurs in human immunodeficiency virus (HIV)/tuberculosis (TB) coinfection, but the underlying molecular mechanisms are not well-defined. Excessive matrix metalloproteinase (MMP) activity is emerging as a key process but has not been systematically studied in HIV-associated TB. Methods.: We performed a cross-sectional study of matrix turnover in HIV type 1 (HIV-1)-infected and -uninfected TB patients and controls, and a prospective cohort study of HIV-1-infected TB patients at risk of TB immune reconstitution inflammatory syndrome (TB-IRIS), in Cape Town, South Africa...
May 5, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28475618/first-time-detection-and-identification-of-the-mycobacterium-tuberculosis-complex-members-in-extrapulmonary-tuberculosis-clinical-samples-in-south-tunisia-by-a-single-tube-tetraplex-real-time-pcr-assay
#12
Mariam Siala, Salma Smaoui, Wafa Taktak, Salma Hachicha, Asma Ghorbel, Chema Marouane, Sana Kammoun, Dhikrayet Gamara, Leila Slim, Radhouane Gdoura, Férièle Messadi-Akrout
INTRODUCTION: Tunisia has one of the highest burdens of extrapulmonary tuberculosis (EPTB) among tuberculosis (TB) cases but the contribution of MTBC-mediated human EPTB is unknown. EPTB diagnosis is challenging due to the paucibacillary nature of clinical samples. Therefore, a need of a simplified molecular method for sensitive and specific TB detection and differentiation of MTBC members caused EPTB remains a priority to an early diagnosis, optimize successful anti-TB treatment and minimize transmission...
May 5, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28468641/comparing-tuberculosis-management-under-public-and-private-healthcare-providers-victoria-australia-2002-2015
#13
Katie D Dale, Ee Laine Tay, James M Trauer, Peter G Trevan, Justin T Denholm
BACKGROUND: Private healthcare providers are important to tuberculosis (TB) management globally, although internationally there are reports of suboptimal management and disparities in treatment commencement in the private sector. We compared the management of TB patients receiving private versus public healthcare in Victoria, an industrialised setting with low tuberculosis (TB) incidence. METHODS: Retrospective cohort study: 2002-2015. Private healthcare provision was included as an independent variable in several multivariate logistic and Cox proportional hazard regression models that assessed a range of outcome variables, encompassing treatment commencement delays, management and treatment outcomes...
May 3, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28454650/significant-under-expression-of-the-dosr-regulon-in-m-%C3%A2-tuberculosis-complex-lineage-6-in-sputum
#14
Boatema Ofori-Anyinam, Gregory Dolganov, Tran Van, J Lucian Davis, Nicholas D Walter, Benjamin J Garcia, Marty Voskuil, Kristina Fissette, Maren Diels, Michèle Driesen, Conor J Meehan, Dorothy Yeboah-Manu, Mireia Coscolla, Sebastien Gagneux, Martin Antonio, Gary Schoolnik, Florian Gehre, Bouke C de Jong
Mycobacterium africanum lineage (L) 6 is an important pathogen in West Africa, causing up to 40% of pulmonary tuberculosis (TB). The biology underlying the clinical differences between M. africanum and M. tuberculosis sensu stricto remains poorly understood. We performed ex vivo expression of 2179 genes of the most geographically dispersed cause of human TB, M. tuberculosis L4 and the geographically restricted, M. africanum L6 directly from sputa of 11 HIV-negative TB patients from The Gambia who had not started treatment...
May 2017: Tuberculosis
https://www.readbyqxmd.com/read/28450377/fundus-findings-in-a-series-of-patients-with-extrapulmonary-tuberculosis-in-thailand
#15
Choeng Jirawison, Yingna Liu, Karjbundid Surasit, Ernest Maningding, Siripim Kamphaengkham, Somsanguan Ausayakhun, David Heiden, Todd P Margolis, John A Gonzales, Nisha R Acharya, Jeremy David Keenan
AIM: The aim of this study was to determine the frequency of fundus abnormalities among patients who are undergoing or have recently completed treatment for extrapulmonary tuberculosis (eTB). METHODS: This is a prospective cross-sectional study conducted in a TB clinic of a tertiary hospital in northern Thailand. All patients who had eTB between January 2014 and August 2015 were invited by telephone to return to the clinic for fundus photography. Three uveitis specialists reviewed all photographs to identify posterior segment lesions that were consistent with ocular TB...
April 27, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28446486/delayed-diagnosis-of-pulmonary-tuberculosis-in-a-13-year-old-malawian-boy
#16
Niall Johnston, Nichola Sandys
Childhood tuberculosis (TB) is a significant global health burden. There are more than 1 million new cases of childhood TB annually. Despite this, many national TB control programs largely focus on identification and treatment of smear positive adults. Early case detection is essential if childhood TB is to be controlled and eradicated.Delayed diagnosis of TB is associated with more advanced disease and worse treatment outcomes. Younger children who go undiagnosed for long periods are at risk of developing severe pulmonary and extrapulmonary disease, such as meningitis...
April 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28436493/an-attenuated-mycobacterium-tuberculosis-clinical-strain-with-a-defect-in-esx-1-secretion-induces-minimal-host-immune-responses-and-pathology
#17
Helena Strand Clemmensen, Niels Peter Hell Knudsen, Erik Michael Rasmussen, Jessica Winkler, Ida Rosenkrands, Ahmad Ahmad, Troels Lillebaek, David R Sherman, Peter Lawætz Andersen, Claus Aagaard
Although Mycobacterium tuberculosis (M.tb) DK9897 is an attenuated strain, it was isolated from a patient with extrapulmonary tuberculosis and vaccination with a subunit vaccine (H56) induced poor protection against it. Both attenuation and lack of protection are because M.tb DK9897 cannot secrete the EsxA virulence factor nor induce a host response against it. Genome sequencing identified a frameshift mutation in the eccCa1 gene. Since the encoded EccCa1 protein provides energy for ESX-1 secretion, it suggested a defect in the ESX-1 type VII secretion system...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436340/racial-inequality-in-the-annual-risk-of-tuberculosis-infection-in-the-united-states-1910-1933
#18
J L Zelner, C Muller, J J Feigenbaum
Tuberculosis (TB) mortality rates in the USA fell rapidly from 1910 to 1933. However, during this period, racial disparities in TB mortality in the nation's expanding cities grew. Because of long delays between infection and disease, TB mortality is a poor indicator of short-term changes in transmission. We estimated the annual risk of TB infection (ARTI) in 11 large US cities to understand whether rising inequality in mortality reflected rising inequality in ARTI using city-level TB mortality data compiled by the US Department of Commerce from 1910 to 1933...
April 24, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28425873/rapid-detection-of-mycobacterium-tuberculosis-and-rifampicin-resistance-in-extrapulmonary-tuberculosis-and-sputum-smear-negative-pulmonary-suspects-using-xpert-mtb-rif
#19
Irfan Ullah, Arshad Javaid, Haleema Masud, Mazhar Ali, Anila Basit, Waqas Ahmad, Faisal Younis, Rehana Yasmin, Afsar Khan, Abdul Jabbar, Masroor Husain, Zahid Ahmad Butt
BACKGROUND: Tuberculosis (TB) is a serious public health problem in developing countries such as Pakistan. Rapid diagnosis of TB and detection of drug resistance are very important for timely and appropriate management of multidrug-resistant TB (MDR-TB). OBJECTIVE: The purpose of this study was to determine the diagnostic efficacy of the Xpert MTB/RIF assay for rapid diagnosis of TB and detection of rifampicin (RIF) resistance in extrapulmonary and smear-negative pulmonary TB suspects...
April 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28410692/treatment-outcome-of-extrapulmonary-tuberculosis-under-revised-national-tuberculosis-control-programme
#20
J J Cherian, I Lobo, A Sukhlecha, U Chawan, N A Kshirsagar, B L Nair, L Sawardekar
BACKGROUND: Extrapulmonary tuberculosis (EPTB) constitutes 15-20% of tuberculosis cases in India. Earlier studies have evaluated treatment outcomes of EPTB with little information on outcomes of individual site of EPTB. AIMS: The objective was to study the outcome of Directly Observed Treatment Short course (DOTS) treatment of EPTB in different organ systems under Revised National Tuberculosis Control Programme. METHODS: Multi-centric retrospectives record review was carried out in three states in India...
April 2017: Indian Journal of Tuberculosis
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