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https://www.readbyqxmd.com/read/28338827/strategies-for-halting-the-rise-of-multidrug-resistant-tb-epidemics-assessing-the-effect-of-early-case-detection-and-isolation
#1
Aquino L Espindola, Marie Varughese, Marek Laskowski, Affan Shoukat, Jane M Heffernan, Seyed M Moghadas
Background: The increasing rates of multidrug resistant TB (MDR-TB) have posed the question of whether control programs under enhanced directly observed treatment, short-course (DOTS-Plus) are sufficient or implemented optimally. Despite enhanced efforts on early case detection and improved treatment regimens, direct transmission of MDR-TB remains a major hurdle for global TB control. Methods: We developed an agent-based simulation model of TB dynamics to evaluate the effect of transmission reduction measures on the incidence of MDR-TB...
March 7, 2017: International Health
https://www.readbyqxmd.com/read/28337457/screening-for-tuberculosis-in-health-care-workers-experience-in-an-italian-teaching-hospital
#2
Christian Napoli, Filippo Ferretti, Filippo Di Ninno, Riccardo Orioli, Alessandra Marani, Maria Giuditta Sarlo, Claudio Prestigiacomo, Assunta De Luca, Giovanni Battista Orsi
Health care workers (HCW) are particularly at risk of acquiring tuberculosis (TB), even in countries with low TB incidence. Therefore, TB screening in HCW is a useful prevention strategy in countries with both low and high TB incidence. Tuberculin skin test (TST) is widely used although it suffers of low specificity; on the contrary, the in vitro enzyme immunoassay tests (IGRA) show superior specificity and sensitivity but are more expensive. The present study reports the results of a three-year TB surveillance among HCW in a large teaching hospital in Rome, using TST (by standard Mantoux technique) and IGRA (by QuantiFERON-TB) as first- and second-level screening tests, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28337427/comparative-proteomics-analysis-of-human-macrophages-infected-with-virulent-mycobacterium-bovis
#3
Pei Li, Rui Wang, Wenqi Dong, Linlin Hu, Bingbing Zong, Yanyan Zhang, Xiangru Wang, Aizhen Guo, Anding Zhang, Yaozu Xiang, Huanchun Chen, Chen Tan
Mycobacterium bovis (M. bovis), the most common pathogens of tuberculosis (TB), is virulent to human and cattle, and transmission between cattle and humans warrants reconsideration concerning food safety and public health. Recently, efforts have begun to analyze cellular proteomic responses induced by Mycobacterium tuberculosis (M. tb). However, the underlying mechanisms by which virulent M. bovis affects human hosts are not fully understood. For the present study, we utilized a global and comparative labeling strategy of isobaric tag for relative and absolute quantitation (iTRAQ) to assess proteomic changes in the human monocyte cell line (THP-1) using a vaccine strain and two virulent strains H37Rv and M...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28333913/tuberculosis-among-foreign-born-persons-diagnosed-%C3%A2-10-years-after-arrival-in-the-united-states-2010-2015
#4
Clarisse A Tsang, Adam J Langer, Thomas R Navin, Lori R Armstrong
The majority of tuberculosis (TB) cases in the United States are attributable to reactivation of latent TB infection (LTBI) (1). LTBI refers to the condition when a person is infected with Mycobacterium tuberculosis without signs and symptoms, or radiographic or bacteriologic evidence of TB disease. CDC and the U.S. Preventive Services Task Force (USPSTF) recommend screening populations at increased risk for LTBI, including persons who have lived in congregate settings at high risk and persons who were born in, or are former residents of countries with TB incidence ≥20 cases per 100,000 population (2-4)...
March 24, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28333284/revisiting-the-mutant-prevention-concentration-to-guide-dosing-in-childhood-tuberculosis
#5
Devan Jaganath, H Simon Schaaf, Peter R Donald
The mutant prevention concentration (MPC) is a well-known concept in the chemotherapy of many bacterial infections, but is seldom considered in relation to tuberculosis (TB) treatment, as the required concentrations are generally viewed as unachievable without undue toxicity. Early studies revealed single mutations conferring high MICs of first- and second-line anti-TB agents; however, the growing application of genomics and quantitative drug susceptibility testing in TB suggests a wide range of MICs often determined by specific mutations and strain type...
March 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28331797/paradoxical-response-with-increased-tumor-necrosis-factor-%C3%AE-levels-to-anti-tuberculosis-treatment-in-a-patient-with-disseminated-tuberculosis
#6
Sho Watanabe, Yugo Kaneko, Hironori Kawamoto, Tomoki Maehara, Yuri Baba, Ikumi Fujisaki, Nayuta Saito, Kai Ryu, Aya Seki, Tsugumi Horikiri, Akira Kinoshita, Hiroshi Takeda, Keisuke Saito, Kazuyosi Kuwano
It has been reported that tuberculosis (TB) worsens after cessation of tumor necrosis factor-α inhibitors and starting anti-TB treatment. Little is known about the immunological pathogenesis of this paradoxical response (PR). We report the first case of a TB patient in whom PR occurred concurrently with elevation of circulating tumor necrosis factor-α (TNFα) levels. A 75-year-old woman, who had been treated with adalimumab for SAPHO syndrome, developed disseminated TB. Soon after administration of anti-TB treatment (isoniazid, rifampicin, pyrazinamide, and ethambutol), and after discontinuation of adalimumab, a PR occurred...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28329197/systematic-review-meta-analysis-and-cost-effectiveness-of-treatment-of-latent-tuberculosis-infection-to-reduce-progression-to-multidrug-resistant-tuberculosis
#7
Suzanne M Marks, Sundari R Mase, Sapna Bamrah Morris
Background: Evidence-based recommendations for treating persons having presumed latent tuberculosis infection (LTBI) after contact to infectious multidrug-resistant tuberculosis (MDR TB) are lacking because published data consist of small observational studies. TB incidence in persons treated for latent multidrug-resistant-TB infection (MDR LTBI) is unknown. Methods: We conducted a systematic review of studies published (1/1/1994-12/31/2014) to analyze TB incidence, treatment completion and discontinuation, and cost effectiveness...
March 14, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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/28327409/mir-23a-5p-modulates-mycobacterial-survival-and-autophagy-during-mycobacterium-tuberculosis-infection-through-tlr2-myd88-nf-%C3%AE%C2%BAb-pathway-by-targeting-tlr2
#9
Xing Gu, Yan Gao, De-Guang Mu, En-Qing Fu
Autophagy plays a pivotal role in activating the antimicrobial host defense against Mycobacterium tuberculosis (M.tb.). The emerging roles of microRNAs (miRNAs) in regulating immune responses have attracted increasing attention in recent years. Appreciating the potential of host-directed therapies designed to control autophagy during mycobacterial infection, we focused on the influence of miR-23a-5p on the activation of macrophage autophagy during M.tb. infection in bone marrow-derived macrophages (BMDMs) and murine RAW264...
March 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28326285/impact-of-telemonitoring-approaches-on-integrated-hiv-and-tb-diagnosis-and-treatment-interventions-in-sub-saharan-africa-a-scoping-review
#10
REVIEW
Clarence S Yah, Ernest Tambo, Christopher Khayeka-Wandabwa, Jeanne Y Ngogang
Background: This paper explores telemonitoring/mhealth approaches as a promising real time and contextual strategy in overhauling HIV and TB interventions quality access and uptake, retention,adherence and coverage impact in endemic and prone-epidemic prevention and control in sub-Sahara Africa. Methods: The scoping review method was applied in acknowledged journals indexing platforms including Medline, Embase, Global Health, PubMed, MeSH PsycInfo, Scopus and Google Scholar to identify relevant articles pertaining to telemonitoring as a proxy surrogate method in reinforcing sustainability of HIV/TB prevention/treatment interventions in sub-Saharan Africa...
2017: Health Promotion Perspectives
https://www.readbyqxmd.com/read/28319425/overcoming-challenges-in-the-diagnosis-prevention-and-treatment-of-pediatric-drug-resistant-tuberculosis
#11
Sylvie Jonckheree, Jennifer Furin
Drug-resistant tuberculosis (DR-TB) is a growing global health threat and children are especially vulnerable to becoming infected and sick with DR-TB. There is a growing body of evidence on the optimal diagnosis, treatment and prevention of DR-TB in this vulnerable population. Areas covered: A comprehensive review of the literature on DR-TB in children was done using PubMed and Ovid databases up to December 31, 2016. Topic areas covered included diagnosis of DR-TB, treatment of DR-TB-including novel medications and regimens, prevention of DR-TB, community-based care, and stigma/discrimination...
March 20, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28318770/expression-of-cathepsin-s-in-bcg-converts-it-into-a-pro-apoptotic-and-highly-immunogenic-strain
#12
Alice Lau, Vijender Singh, Hafid Soualhine, Zakaria Hmama
BACKGROUND: BCG vaccine, introduced almost 100years ago, is the only option to prevent TB disease. It effectively protects newborns from meningeal TB but fails to prevent adult pulmonary TB. TB kills 1.3million people annually in areas where BCG vaccination is widely practiced. Thus, more effective TB vaccines are urgently needed. Others and we have shown that BCG mimics features of virulent M. tuberculosis, in particular attenuation of essential macrophage functions such as phagosome maturation and antigen presentation...
March 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28318613/latent-tuberculosis-infection-screening-prior-to-biological-treatment-in-tunisian-patients
#13
Marwa Slouma, Ines Mahmoud, Olfa Saidane, Selma Bouden, Leila Abdelmoula
OBJECTIVES: The screening of latent tuberculosis infection (LTBI) is necessary to prevent infection in patients with chronic inflammatory disease (CID) undergoing biological treatment. We aimed to assess the efficacy of LTBI screening prior to biological treatment in Tunisia, considered as a high-incidence area of active TB disease. METHODS: We conducted a retrospective study over a period of 8 years [2007-2014] including patients with chronic inflammatory rheumatism receiving biologic agents since at least 6 months...
February 24, 2017: Thérapie
https://www.readbyqxmd.com/read/28317800/are-who-approved-nucleic-acid-amplification-tests-causing-large-scale-false-identification-of-rifampicin-resistant-tuberculosis-programmatic-experience-from-south-india
#14
Praveen Sanker, Anusree P Ambika, Vishnu T Santhosh, Ramya Puthukkudi Kottuthodi, Ravikrishnan Balakrishnan, Sunil Kumar Mrithunjayan, Hisham Moosan
INTRODUCTION: The nucleic acid amplification tests (NAATs): Line probe assay and GeneXpert (Xpert) have evolved as the primary tool for identification of rifampicin (RIF)-resistant (RR) tuberculosis (TB) worldwide, primarily because of the ease and speed. We rechecked RR isolates identified by NAATs from presumptive RR TB cases belonging to South India by the Revised National TB Control Program, India using multiple RIF concentrations on Bactec MGIT system and compared the mutation patterns with the resistance levels...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317799/a-first-insight-into-the-genetic-diversity-of-mycobacterium-tuberculosis-in-veracruz-mexico
#15
Raquel Almaraz-Velasco, Daniela Munro-Rojas, Javier Fuentes-Domínguez, Raquel Muñiz-Salazar, Maria Angélica Ibarra-Estela, Alma Delia Guevara-Méndez, Rosa Icela Chaparro-Martinez, Monserrat Perez-Navarro, Roberto Zenteno-Cuevas
OBJECTIVE/BACKGROUND: Tuberculosis (TB) remains one of the most important infectious diseases. Although Mexico is one of the Latin American countries with the largest contribution to these statistics, there are few reports that describe the genotypic characteristics of TB. The aim of this study was to use the MIRU-VNTR-24 loci to analyze the genetic diversity of M. tuberculosis circulating in the state of Veracruz, Mexico. METHODS: Here, we analyze by MIRU-VNTR-24 loci 80 clinical isolates from individuals with confirmed TB from Veracruz México, also clinical and epidemiological variables were recovered and analyzed...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28315807/association-of-cyp2c9-cyp2a6-acsm2a-and-cpt1a-gene-polymorphisms-with-adverse-effects-of-valproic-acid-in-chinese-patients-with-epilepsy
#16
Can Wang, Ping Wang, Li-Ping Yang, Jing Pan, Xue Yang, Hong-Ying Ma
OBJECTIVE: To explore the influence of CYP2C9, CYP2A6, ACSM2A, CPT1A gene polymorphisms on valproic acid (VPA) and its role in metabolism-related liver dysfunction in order to guide the clinical safety and rational use of VPA. METHODS: One hundred two patients taking sodium valproate oral solution were genotyped. To assess the genotypes of relevant genes, the CYP2C9 gene was directly sequenced; for polymorphism classification, multiple Long-PCR electrophoresis was conducted for CYP2A6; and imLDR method was used for ACSM2A and CPT1A...
February 27, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28298223/migration-to-middle-income-countries-and-tuberculosis-global-policies-for-global-economies
#17
Julia Moreira Pescarini, Laura Cunha Rodrigues, M Gabriela M Gomes, Eliseu Alves Waldman
BACKGROUND: International migration to middle-income countries is increasing and its health consequences, in particular increasing transmission rates of tuberculosis (TB), deserve consideration. Migration and TB are a matter of concern in high-income countries and targeted screening of migrants for active and latent TB infection is a main strategy to manage risk and minimize transmission. In this paper, we discuss some aspects of TB control and migration in the context of middle-income countries, together with the prospect of responding with equitable and comprehensive policies...
March 15, 2017: Globalization and Health
https://www.readbyqxmd.com/read/28293159/intensified-tuberculosis-case-finding-implementation-of-isoniazid-preventive-therapy-and-associated-factors-among-people-living-with-human-immunodeficiency-virus-at-public-health-facilities-of-harari-region-eastern-ethiopia-a-cross-sectional-study
#18
Ayele Geleto, Degu Abate, Gudina Egata
OBJECTIVE: Globally, the number of people living with human immunodeficiency virus (PLHIV) particularly in sub-Saharan Africa is growing. This has been resulted in increased number of tuberculosis (TB) new cases. To control burden of TB among PLHIV, a number of collaborative TB/HIV activities were recommended. However, data about collaborative TB/HIV services in the study area is scarce. The objective of this study is to assess intensified TB case finding, implementation of isoniazid preventive therapy (IPT) and associated factors among PLHIV...
January 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28289384/theabrownin-inhibits-cell-cycle-progression-and-tumor-growth-of-lung-carcinoma-through-c-myc-related-mechanism
#19
Li Zhou, Feifei Wu, Wangdong Jin, Bo Yan, Xin Chen, Yingfei He, Weiji Yang, Wenlin Du, Qiang Zhang, Yonghua Guo, Qiang Yuan, Xiaoqiao Dong, Wenhua Yu, Jin Zhang, Luwei Xiao, Peijian Tong, Letian Shan, Thomas Efferth
Green tea, the fresh leaves of Camellia sinensis, is not only a health-promoting beverage but also a traditional Chinese medicine used for prevention or treatment of cancer, such as lung cancer. Theabrownin (TB) is the main fraction responsible for the medicinal effects of green tea, but whether it possesses anti-cancer effect is unknown yet. This study aimed to determine the in vitro and in vivo anti-lung cancer effect of TB and explore the underlying molecular mechanism, by using A549 cell line and Lewis lung carcinoma-bearing mice...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28289033/population-pharmacokinetics-of-pyrazinamide-in-patients-with-tuberculosis
#20
Abdullah Alsultan, Rada Savic, Kelly E Dooley, Marc Weiner, William Whitworth, William R Mac Kenzie, Charles A Peloquin
The current treatment used for tuberculosis (TB) is lengthy and needs to be shortened and improved. Pyrazinamide (PZA) has potent sterilizing activity and has the potential to shorten TB treatment duration, if optimized. The goals of this study were (a) to develop a population pharmacokinetic (PK) model for PZA among patients enrolled in PK sub-studies of Tuberculosis Trial Consortium (TBTC) trials 27 and 28, and (b) to determine covariates that affect PZA PK. We also (c) performed simulations and target attainment analysis using the proposed targets of Cmax >35 mcg/ml or AUC >363 mcg*hr/ml to see if higher weight-based dosing could improve PZA efficacy...
March 13, 2017: Antimicrobial Agents and Chemotherapy
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