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https://www.readbyqxmd.com/read/28214557/quadruple-first-line-drug-resistance-in-mycobacterium-tuberculosis-in-vietnam-what-can-we-learn-from-genes
#1
Huy Quang Nguyen, Nhung Viet Nguyen, Lucie Contamin, Thanh Hoa Thi Tran, Thuong Thi Vu, Hung Van Nguyen, Ngoc Lan Thi Nguyen, Son Thai Nguyen, Anh Duc Dang, Anne-Laure Bañuls, Van Anh Thi Nguyen
In Vietnam, a country with high tuberculosis (137/100.000 population) and multidrug-resistant (MDR)-TB burdens (7.8/100.000 population), little is known about the molecular signatures of drug resistance in general and more particularly of second line drug (SLD) resistance. This study is specifically focused on Mycobacterium tuberculosis isolates resistant to four first-line drugs (FLDs) that make TB much more difficult to treat. The aim is to determine the proportion of SLD resistance in these quadruple drug resistant isolates and the genetic determinants linked to drug resistance to better understand the genetic processes leading to quadruple and extremely drug resistance (XDR)...
February 15, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28202091/isolation-unit-for-multidrug-resistant-tuberculosis-patients-in-a-low-endemic-country-a-step-towards-the-world-health-organization-end-tb-strategy
#2
M C Payen, J P VAN Vooren, O Vandenberg, N Clumeck, S DE Wit
Tuberculosis (TB) remains a threat to public health and is the second cause of death due to a single infectious agent after HIV/AIDS. The worldwide distribution of TB is heterogeneous. The incidence is decreasing in most high-income regions, but the situation remains worrying in many parts of the world. The emergence of Mycobacterium tuberculosis strains resistant to key agents used in treatment (rifampin and isoniazid) contributes to TB transmission around the world. To achieve TB elimination, both high and low endemic countries must upscale their efforts to decrease disease transmission and improve cure rates...
February 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28199375/has-universal-screening-with-xpert%C3%A2-mtb-rif-increased-the-proportion-of-multidrug-resistant-tuberculosis-cases-diagnosed-in-a-routine-operational-setting
#3
Pren Naidoo, Rory Dunbar, Judy Caldwell, Carl Lombard, Nulda Beyers
SETTING: Primary health services in Cape Town, South Africa where the introduction of Xpert® MTB/RIF (Xpert) enabled simultaneous screening for tuberculosis (TB) and drug susceptibility in all presumptive cases. STUDY AIM: To compare the proportion of TB cases with drug susceptibility tests undertaken and multidrug-resistant tuberculosis (MDR-TB) diagnosed pre-treatment and during the course of 1st line treatment in the previous smear/culture and the newly introduced Xpert-based algorithms...
2017: PloS One
https://www.readbyqxmd.com/read/28182726/spatial-patterns-of-multidrug-resistant-tuberculosis-and-relationships-to-socio-economic-demographic-and-household-factors-in-northwest-ethiopia
#4
Kefyalew Addis Alene, Kerri Viney, Emma S McBryde, Archie C A Clements
BACKGROUND: Understanding the geographical distribution of multidrug-resistant tuberculosis (MDR-TB) in high TB burden countries such as Ethiopia is crucial for effective control of TB epidemics in these countries, and thus globally. We present the first spatial analysis of multidrug resistant tuberculosis, and its relationship to socio-economic, demographic and household factors in northwest Ethiopia. METHODS: An ecological study was conducted using data on patients diagnosed with MDR-TB at the University of Gondar Hospital MDR-TB treatment centre, for the period 2010 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28182570/long-term-outcome-and-safety-of-prolonged-bedaquiline-treatment-for-multidrug-resistant-tuberculosis
#5
Lorenzo Guglielmetti, Marie Jaspard, Damien Le Dû, Marie Lachâtre, Dhiba Marigot-Outtandy, Christine Bernard, Nicolas Veziris, Jérôme Robert, Yazdan Yazdanpanah, Eric Caumes, Mathilde Fréchet-Jachym
Bedaquiline, a recently approved drug for the treatment of multidrug-resistant tuberculosis (MDR-TB), is recommended for a duration of 24 weeks. There are scarce data on patients treated with this drug outside clinical trials.All MDR-TB patients who started treatment from January 1, 2011 to December 31, 2013 and received ≥30 days of bedaquiline were included in a multicentre observational cohort.Among 45 MDR-TB patients, 53% harboured isolates resistant to both fluoroquinolones and second-line injectables, and 38% harboured isolates resistant to one of these drug classes...
December 22, 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28173763/risk-factors-for-poor-multidrug-resistant-tuberculosis-treatment-outcomes-in-kyiv-oblast-ukraine
#6
Omowunmi Aibana, Mariya Bachmaha, Viatcheslav Krasiuk, Natasha Rybak, Timothy P Flanigan, Vasyl Petrenko, Megan B Murray
BACKGROUND: Ukraine is among ten countries with the highest burden of multidrug- resistant TB (MDR-TB) worldwide. Treatment success rates for MDR-TB in Ukraine remain below global success rates as reported by the World Health Organization. Few studies have evaluated predictors of poor MDR-TB outcomes in Ukraine. METHODS: We conducted a retrospective analysis of patients initiated on MDR-TB treatment in the Kyiv Oblast of Ukraine between January 01, 2012 and March 31st, 2015...
February 7, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28166377/multidrug-resistant-tuberculosis-in-transplant-recipients-case-report-and-review-of-the-literature
#7
Moises A Huaman, Robert Brawley, David Ashkin
Transplant recipients are at increased risk of tuberculosis (TB). We describe a case of pulmonary and vertebral multidrug-resistant TB (MDR-TB) in a kidney transplant patient who required neurosurgical intervention and unfortunately developed fatal nosocomial complications. Thirteen transplant recipients with MDR-TB were previously reported in the literature (1 hematopoietic cell transplant, 1 heart transplant, 1 lung transplant, 1 heart-lung ransplant, and 9 kidney transplant recipients). Extrapulmonary disease, severe treatment complications, and deaths were observed in patients who developed MDR-TB after transplantation...
February 6, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28163165/the-risk-of-global-epidemic-replacement-with-drug-resistant-mycobacterium-tuberculosis-strains
#8
REVIEW
Emma S McBryde, Michael T Meehan, Tan N Doan, Romain Ragonnet, Ben J Marais, Vanina Guernier, James M Trauer
OBJECTIVES: Multidrug-resistant tuberculosis (MDR-TB) is a threat to tuberculosis (TB) control. To guide TB control, it is essential to understand the extent to which and the circumstances in which MDR-TB will replace drug-susceptible TB (DS-TB) as the dominant phenotype. The issue was examined by assessing evidence from genomics, pharmacokinetics, and epidemiology studies. This evidence was then synthesized into a mathematical model. METHODS: This model considers two TB strains, one with and one without an MDR phenotype...
February 2, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28162983/activity-of-moxifloxacin-and-linezolid-against-mycobacterium-tuberculosis-in-combination-with-potentiator-drugs-verapamil-timcodar-colistin-and-sq109
#9
Gerjo J de Knegt, Aart van der Meijden, Corné P de Vogel, Rob E Aarnoutse, Jurriaan E M de Steenwinkel
Current treatment for tuberculosis (TB) is complicated by the emergence of multidrug resistant TB (MDR-TB). As a result, there is an urgent need for new powerful anti-TB regimens and novel strategies. In this study, we aimed to potentiate a moxifloxacin + linezolid backbone as treatment for MDR-TB with the efflux pump inhibitors verapamil and timcodar as well as with drugs that act on mycobacterial cell wall stability such as colistin and SQ109. Using a time-kill kinetics assay, the activities of moxifloxacin, linezolid, verapamil, timcodar, colistin and SQ109 as single drugs against Mycobacterium tuberculosis were evaluated...
February 2, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28157461/multidrug-resistant-tuberculosis-patients-views-of-interventions-to-reduce-treatment-loss-to-follow-up
#10
T Tupasi, A M C G Garfin, J M Mangan, R Orillaza-Chi, L C Naval, G I Balane, R Basilio, A Golubkov, E S Joson, W-J Lew, V Lofranco, M Mantala, S Pancho, J N Sarol, A Blumberg, D Burt, E V Kurbatova
SETTING: Patients who initiated treatment for multidrug-resistant tuberculosis (MDR-TB) at 15 Programmatic Management of Drug-resistant Tuberculosis (PMDT) health facilities in the Philippines between July and December 2012. OBJECTIVES: To describe patients' views of current interventions, and suggest changes likely to reduce MDR-TB loss to follow-up. METHODS: In-depth interviews were conducted between April and July 2014 with MDR-TB patients who were undergoing treatment, had finished treatment at the time of the interview (controls), or had been lost to follow-up (LTFU)...
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28157460/anti-tuberculosis-drug-resistance-in-ethiopia-systematic-review
#11
S Weldegebreal, T Mebrahtu
BACKGROUND: Resistance to anti-tuberculosis drugs threatens to undermine effective control of tuberculosis (TB). In areas with weak TB control and misuse of anti-tuberculosis drugs, hotspots of multidrug-resistant TB (MDR-TB) have appeared. The aim of this review is to determine the prevalence rate of any anti-tuberculosis drug resistance, monoresistance and MDR-TB in Ethiopia. METHODS: A systematic review of the literature on any resistance, monoresistance and MDR-TB was conducted...
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28157459/multidrug-resistant-tuberculosis-in-bangladesh-results-from-a-sentinel-surveillance-system
#12
S Banu, M T Rahman, S Ahmed, R Khatun, S S Ferdous, B Hosen, M M Rahman, T Ahmed, J S Cavanaugh, J D Heffelfinger
BACKGROUND: Multidrug-resistant tuberculosis (MDR-TB) is a serious obstacle to successful TB control. The 2010-2011 Bangladesh Drug Resistance Survey (DRS) showed MDR-TB prevalence to be 7% overall, 1.4% in new and 28.5% in previously treated patients. We aimed to determine the rate of MDR-TB in selected sentinel sites in Bangladesh. METHODS: Fourteen hospitals from the seven divisions in Bangladesh were selected as sentinel surveillance sites. Newly registered TB patients were systematically enrolled from August 2011 to December 2014...
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28157458/estimating-the-global-burden-of-multidrug-resistant-tuberculosis-among-prevalent-cases-of-tuberculosis
#13
S Nourzad, H E Jenkins, M Milstein, C D Mitnick
BACKGROUND: Estimates of the multidrug-resistant tuberculosis (MDR-TB) burden are based on incomplete, infrequently updated data among a limited pool of notified or incident pulmonary TB cases. METHODS: Using World Health Organization data reported by 217 countries/territories in 2014, we calculated the MDR-TB burden among prevalent TB cases and compared these with estimates among incident and notified TB patients. We also compared treatment coverage across estimates...
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28157456/mdr-tb-in-eastern-europe-in-the-era-of-the-tb-elimination-action-framework
#14
Andrii Dudnyk, Dmytro Butov, Valeriu Crudu, Christoph Lange, Dumitru Chesov
No abstract text is available yet for this article.
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28157455/describing-the-global-burden-of-mdr-tb-missing-cases-or-different-metrics
#15
Matthew Murrill, David W Dowdy
No abstract text is available yet for this article.
January 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28155306/an-audiological-profile-of-patients-infected-with-multi-drug-resistant-tuberculosis-at-a-district-hospital-in-kwazulu-natal
#16
Delicia Appana, Lavanithum Joseph, Jessica Paken
BACKGROUND: The increased incidence of multi-drug-resistant tuberculosis (MDR-TB) and the consequent use of aminoglycosides with their ototoxic potential necessitate a better understanding of the audiological pattern of infected patients. OBJECTIVE: To describe the occurrence and nature of hearing loss in patients with MDR-TB receiving aminoglycosides over a period of 6 months. METHODS: Baseline and five consecutive monthly audiological assessments were conducted on 52 adults at a hospital in KwaZulu-Natal...
November 25, 2016: South African Journal of Communication Disorders. die Suid-Afrikaanse Tydskrif Vir Kommunikasieafwykings
https://www.readbyqxmd.com/read/28142116/a-novel-benzothiazinethione-analogue-sklb-tb1001-displays-potent-antimycobacterial-activities-in-a-series-of-murine-models
#17
Chao Gao, Ting-Hong Ye, Cui-Ting Peng, Yao-Jie Shi, Xin-Yu You, Lu Xiong, Kai Ran, Li-Dan Zhang, Xiu-Xiu Zeng, Ning-Yu Wang, Luo-Ting Yu, Yu-Quan Wei
New chemotherapeutic compounds and regimens are needed to combat multidrug-resistant Mycobacterium tuberculosis. Here, we used a series of murine models to assess an antitubercular lead compound SKLB-TB1001. In the Mycobacterium bovis bacillus Calmette-Guérin and the acute M. tuberculosis H37Rv infection mouse models, SKLB-TB1001 significantly attenuated the mycobacterial load in lungs and spleens. The colony forming unit counts and histological examination of lungs from H37Rv infected mice revealed that the benzothiazinethione analogue SKLB-TB1001 as a higher dose level was as effective as isoniazid...
January 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28141813/determination-of-plasma-concentrations-of-levofloxacin-by-high-performance-liquid-chromatography-for-use-at-a-multidrug-resistant-tuberculosis-hospital-in-tanzania
#18
Andrew Ebers, Suzanne Stroup, Stellah Mpagama, Riziki Kisonga, Isaack Lekule, Jie Liu, Scott Heysell
Therapeutic drug monitoring may improve multidrug-resistant tuberculosis (MDR-TB) treatment outcomes. Levofloxacin demonstrates significant individual pharmacokinetic variability. Thus, we sought to develop and validate a high-performance liquid chromatography (HPLC) method with ultraviolet (UV) detection for levofloxacin in patients on MDR-TB treatment. The HPLC-UV method is based on a solid phase extraction (SPE) and a direct injection into the HPLC system. The limit of quantification was 0.25 μg/mL, and the assay was linear over the concentration range of 0...
2017: PloS One
https://www.readbyqxmd.com/read/28137814/pharmacokinetic-modeling-and-limited-sampling-strategies-based-on-healthy-volunteers-for-monitoring-of-ertapenem-in-mdr-tb-patients
#19
S P van Rijn, M A Zuur, R van Altena, O W Akkerman, J H Proost, W C M de Lange, H A M Kerstjens, D J Touw, T S van der Werf, J G W Kosterink, J W C Alffenaar
BACKGROUND: Ertapenem is a broad spectrum carbapenem antibiotic and is being explored against Mycobacterium tuberculosis Carbapenems have anti-bacterial activity when the plasma concentration exceeds the minimal inhibitory concentration at least 40% of the time (40%T>MIC). To assess 40%T>MIC in multidrug-resistant tuberculosis (MDR-TB) patients, a limited sampling strategy was developed using a population pharmacokinetic model based on healthy volunteers. METHODS: A two-compartment population pharmacokinetic model was developed from data in forty-two healthy volunteers, using an iterative two-stage Bayesian method...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28125692/recurrence-after-successful-treatment-of-multidrug-resistant-tuberculosis-in-taiwan
#20
Meng-Yu Chen, Yi-Chun Lo, Wan-Chin Chen, Kwei-Feng Wang, Pei-Chun Chan
Recurrence after successful treatment for multidrug-resistant tuberculosis (MDR-TB) is challenging because of limited retreatment options. This study aimed to determine rates and predictors of MDR-TB recurrence after successful treatment in Taiwan. Recurrence rates were analyzed by time from treatment completion in 295 M DR-TB patients in a national cohort. Factors associated with MDR-TB recurrence were examined using a multivariate Cox regression analysis. Ten (3%) patients experienced MDR-TB recurrence during a median follow-up of 4...
2017: PloS One
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