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multidrug resistant tuberculosis

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https://www.readbyqxmd.com/read/28741299/a-review-of-moxifloxacin-for-the-treatment-of-drug-susceptible-tuberculosis
#1
REVIEW
Anushka Naidoo, Kogieleum Naidoo, Helen McIlleron, Sabiha Essack, Nesri Padayatchi
Moxifloxacin, an 8-methoxy quinolone, is an important drug in the treatment of multidrug-resistant tuberculosis and is being investigated in novel drug regimens with pretomanid, bedaquiline, and pyrazinamide, or rifapentine, for the treatment of drug-susceptible tuberculosis. Early results of these studies are promising. Although current evidence does not support the use of moxifloxacin in treatment-shortening regimens for drug-susceptible tuberculosis, it may be recommended in patients unable to tolerate standard first-line drug regimens or for isoniazid monoresistance...
July 24, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28739225/distribution-scheme-of-anti-tuberculosis-drug-resistance-among-hiv-patients-in-a-referral-center-over-10-years
#2
Parvaneh Baghaei, Payam Tabarsi, Afshin Moniri, Majid Marjani, Parissa Farnia, Sayena Jabbehdari, Ali Akbar Velayati
OBJECTIVES: Anti-tuberculosis (TB) drug resistance is increasing among TB patients globally, particularly, in those that are human immunodeficiency virus (HIV) positive. The aim of this study was to determine the pattern of anti-TB drug resistance in these patients in an effort to improve successful treatment outcomes with a proper regimen. METHODS: A cross-sectional study was conducted on adult TB-HIV patients from 2005 to 2015. The pattern of anti-TB drugs resistance was evaluated among HIV positive patients with and without a history of TB treatment...
July 21, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28735047/sesamol-exhibits-potent-antimycobacterial-activity-underlying-mechanisms-and-impact-on-virulence-traits
#3
Sandeep Hans, Sharda Sharma, Saif Hameed, Zeeshan Fatima
OBJECTIVES: Novel strategies to overcome multidrug resistance (MDR) in Tuberculosis (TB) still remain a concern. Usage of natural compounds nowadays to surmount the increasing burden of MDR-TB has shown promising results. The aim of this study was to evaluate the antimycobacterial potential of sesamol (Ses) a natural phenolic compound against Mycobacterium smegmatis, a surrogate for MTB and its underlying mechanism of action along with its effect on mycobacterial virulence traits. METHODS: Cell surface phenotypes were estimated microscopically and spectrophotometrically respectively...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28734764/comparative-genomic-analysis-of-mycobacterium-tuberculosis-beijing-like-strains-revealed-specific-genetic-variations-associated-with-virulence-and-drug-resistance
#4
Juan Germán Rodríguez-Castillo, Camilo Pino, Luis Fernando Niño, Juan Carlos Rozo, Claudia Llerena-Polo, Carlos A Parra-López, Andreas Tauch, Martha Isabel Murcia-Aranguren
Isolates of the Mycobacterium tuberculosis lineage 2/East-Asian are considered one of the most successful strains due to their increased pathogenicity, hyper-virulence associated with drug resistance, and high transmission. Recent studies in Colombia have shown that the Beijing-like genotype is associated with multidrug-resistance and high prevalence in the southwest of the country, but the genetic basis of its success in dissemination is unknown. In contribution to this matter, we obtained the whole sequences of six genomes of clinical isolates assigned to the Beijing-like genotype...
July 19, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28717643/chronic-airflow-obstruction-after-successful-treatment-of-multidrug-resistant-tuberculosis
#5
Anthony L Byrne, Ben J Marais, Carole D Mitnick, Frances L Garden, Leonid Lecca, Carmen Contreras, Yaninna Yauri, Fanny Garcia, Guy B Marks
Cross-sectional studies reveal an association between tuberculosis (TB) and chronic airflow obstruction, but cannot adequately address confounding. We hypothesised that treated pulmonary TB is an independent risk factor for chronic airflow obstruction. The Pulmones Post TB cohort study enrolled participants from Lima, Peru, aged 10-70 years with a history of drug-susceptible (DS)- or multidrug-resistant (MDR)-TB who had completed treatment and were clinically cured. Unexposed participants without TB were randomly selected from the same districts...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28713434/first-insight-into-a-nationwide-genotypic-diversity-of-mycobacterium-tuberculosis-among-previously-treated-pulmonary-tuberculosis-cases-in-benin-west-africa
#6
Dissou Affolabi, N'Dira Sanoussi, Sergio Codo, Fréderic Sogbo, Prudence Wachinou, Faridath Massou, Aderemi Kehinde, Séverin Anagonou
BACKGROUND: Molecular studies on tuberculosis (TB) are rare in low-resource countries like Benin, where data on molecular study on previously treated TB cases is unavailable. MATERIALS AND METHODS: From January to December 2014, all smear- and culture-positive previously treated pulmonary TB patients from all TB clinics were systematically recruited. Drug susceptibility testing and spoligotyping were performed on all isolates. RESULTS: Of the 100 patients recruited, 71 (71...
2017: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/28712668/treatment-outcomes-of-multidrug-resistant-tuberculosis-patients-in-zhejiang-china-2009-2013
#7
Le Zhang, Qiong Meng, Songhua Chen, Minwu Zhang, Bin Chen, Beibei Wu, Guangsen Yan, Xiaomeng Wang, Zhongwei Jia
OBJECTIVES: To examine treatment outcomes and factors associated with poor outcome of MDR-TB in China. METHODS: Prospective observational cohort study including consecutive patients with MDR-TB between 2009-2013 in six regions of Zhejiang province. Patients were prescribed treatments by infectious disease specialists and treatment outcomes were recorded. Sociodemographic characteristics were obtained through a structured questionnaire. The primary endpoint was poor treatment outcomes, defined as treatment failure based on microbiological persistence, default (lost to follow-up) or death at 24 months...
July 13, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28709486/diagnosis-of-tuberculous-meningitis-current-scenario-from-a-tertiary-neurocare-centre-in-india
#8
Jyothi Embekkat Kaviyil, Raju Ravikumar
BACKGROUND: Tuberculous meningitis (TBM) is a condition that is caused by Mycobacterium tuberculosis complex and is difficult to diagnose due to the nonspecificity of the presentations. The study analyzed the different modes of diagnosis available in a developing country set up over a period of five years to understand the diagnostic values of the current conventional and automated methods of diagnosis of TBM among the patients suspected with chronic meningitis. METHODS: A total of 10,281 cerebrospinal fluid samples (CSF) were collected from suspected chronic meningitis patients, of which 790 samples were from individuals who had clinically suspected TBM...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28707584/a-review-of-recent-advancements-in-anti-tubercular-molecular-hybrids
#9
Parvesh Singh, Bukola Jaiyeola, Nagaraju Kerru, Oluwakemi Ebenezer, Ajay Bissessur
Tuberculosis (TB) accounts for millions of deaths worldwide every year. Diverse survival strategies adopted by Mycobacterium tuberculosis (Mtb) has substantially hindered the existing anti-TB regimen thereby leading to multidrug-resistant (MDR) and extremely drug-resistant (XDR) strains of TB. The steady decrease in current antibiotics' efficacy against these adversities is an indicator that their adequate replenishment in future is almost impossible, placing society on the precipice of a catastrophe. Over the past many years, researchers have been continuously generating new armamentarium of anti-TB drugs by tailoring the properties of available drugs or designing completely new agents...
July 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28706448/genotypic-distribution-of-multidrug-resistant-and-extensively-drug-resistant-tuberculosis-in-northern-thailand
#10
Risara Jaksuwan, Prasit Tharavichikul, Jayanton Patumanond, Charoen Chuchottaworn, Sakarin Chanwong, Saijai Smithtikarn, Jongkolnee Settakorn
BACKGROUND: Multidrug/extensively drug-resistant tuberculosis (M/XDR-TB) is a major public health problem, and early detection is important for preventing its spread. This study aimed to demonstrate the distribution of genetic site mutation associated with drug resistance in M/XDR-TB in the northern Thai population. METHODS: Thirty-four clinical MTB isolates from M/XDR-TB patients in the upper northern region of Thailand, who had been identified for drug susceptibility using the indirect agar proportion method from 2005 to 2012, were examined for genetic site mutations of katG, inhA, and ahpC for isoniazid (INH) drug resistance and rpoB for rifampicin (RIF) drug resistance...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28704459/prevalence-of-drug-resistant-tuberculosis-in-nigeria-a-systematic-review-and-meta-analysis
#11
Cajetan C Onyedum, Isaac Alobu, Kingsley Nnanna Ukwaja
BACKGROUND: Drug-resistant tuberculosis (TB) undermines control efforts and its burden is poorly understood in resource-limited settings. We performed a systematic review and meta-analysis to provide an up-to-date summary of the extent of drug-resistant TB in Nigeria. METHODS: We searched PubMed, Scopus, Embase, HINARI, AJOL, the Cochrane library, Web of Science, and Google Scholar for reports published before January 31 2017, that included any resistance, mono-resistance or multidrug resistance to anti-TB drugs in Nigeria...
2017: PloS One
https://www.readbyqxmd.com/read/28703105/bronchial-artery-embolization-in-hemoptysis-a-systematic-review
#12
Ananya Panda, Ashu Seith Bhalla, Ankur Goyal
We systematically reviewed the role of bronchial artery embolization (BAE) in hemoptysis. Literature search was done for studies on BAE published between 1976 and 2016. Twenty-two studies published in English, with sample size of at least 50 patients, reporting indications, technique, efficacy, and follow-up were included in the final analysis. Common indications for BAE included tuberculosis (TB), post-tubercular sequelae, bronchiectasis, and aspergillomas. Most common embolizing agent used was polyvinyl alcohol (size, 300-600 μm) with increasing use of glue in recent years...
July 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28700743/polymorphisms-in-the-vitamin-d-receptor-gene-are-associated-with-reduced-rate-of-sputum-culture-conversion-in-multidrug-resistant-tuberculosis-patients-in-south-africa
#13
Matthew J Magee, Yan V Sun, James C M Brust, N Sarita Shah, Yuming Ning, Salim Allana, Angela Campbell, Qin Hui, Koleka Mlisana, Pravi Moodley, Neel R Gandhi
BACKGROUND: Vitamin D modulates the inflammatory and immune response to tuberculosis (TB) and also mediates the induction of the antimicrobial peptide cathelicidin. Deficiency of 25-hydroxyvitamin D and single nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) gene may increase the risk of TB disease and decrease culture conversion rates in drug susceptible TB. Whether these VDR SNPs are found in African populations or impact multidrug-resistant (MDR) TB treatment has not been established...
2017: PloS One
https://www.readbyqxmd.com/read/28700490/side-effects-associated-with-the-treatment-of-multidrug-resistant-tuberculosis-at-a-tuberculosis-referral-hospital-in-south-korea-a-retrospective-study
#14
Tae Won Yang, Hyun Oh Park, Ha Nee Jang, Jun Ho Yang, Sung Hwan Kim, Seong Ho Moon, Joung Hun Byun, Chung Eun Lee, Jong Woo Kim, Dong Hun Kang
Patients with drug-susceptible tuberculosis (TB) show good tolerance of the medications used and have few side effects. However, medications used to treat multidrug-resistant tuberculosis (MDR-TB) have many known side effects. Here, we studied the occurrence of side effects due to treatment of patients with MDR-TB.We conducted a retrospective and consecutive review of the medical records of 256 patients who received treatment for MDR-TB between January 2006 and December 2011.One or more side effects were observed in 95 (37...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28700044/prevalence-of-and-risk-factors-for-multidrug-resistant-tuberculosis-in-iran-and-its-neighboring-countries-systematic-review-and-meta-analysis
#15
Worku Jimma, Marjan Ghazisaeedi, Leila Shahmoradi, Ahmed Abdulahi Abdurahman, Sharareh Rostam Niakan Kalhori, Mahshid Nasehi, Sharifi Yazdi, Reza Safdari
Tuberculosis, in particular drug-resistant tuberculosis, is of global concern due to the high mortality and morbidity associated with it annually. The aim of this study was to determine the prevalence of and the risk factors for multidrug-resistant tuberculosis in Iran and its neighboring countries. Four databases (PubMed, BioMed Central, EMBASE, and Web of Science) were searched using key terms. Nineteen eligible articles were identified, of which 12 and seven were used for quantitative and qualitative analysis, respectively...
May 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28698545/a-novel-protein-kinase-inhibitor-imb-yh-8-with-anti-tuberculosis-activity
#16
Jian Xu, Ju-Xian Wang, Jin-Ming Zhou, Chang-Liang Xu, Bin Huang, Yun Xing, Bin Wang, Rui Luo, Yu-Cheng Wang, Xue-Fu You, Yu Lu, Li-Yan Yu
Protein kinase B (PknB) is one of the Mycobacterium tuberculosis serine/threonine protein kinases and has an essential role in sustaining mycobacterial growth. Here, we identified and characterized a novel small molecule compound named IMB-YH-8 that inhibited PknB and served as anti-mycobacteria lead compound. IMB-YH-8 inhibited PknB auto-phosphorylation and the phosphorylation of GarA by PknB in a dose-dependent manner. The compound did not inhibit human Akt1 or other serine/threonine kinases in M. tuberculosis except for the highly homologous PknA...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698044/resistance-to-first-and-second-line-antituberculosis-drugs-in-southern-taiwan-implications-for-empirical-treatment
#17
Cheng-Yu Kuo, Wen-Hung Wang, Chung-Hao Huang, Yen-Hsu Chen, Po-Liang Lu
BACKGROUND: Multidrug-resistant and extensively drug-resistant tuberculosis infections cause public health concerns worldwide. Local epidemiologic data about the drug resistance of Mycobacteriumtuberculosis isolate (Mtb) is critical to guide appropriate empirical therapy to cure patients and restrain the spread of tuberculosis. METHODS: Antituberculosis susceptibility testing was performed for 287 Mtbs, including 63 MDR-Mtbs collected in southern Taiwan from 2011 to 2015...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28697808/pyrazinamide-resistance-conferring-mutations-in-pnca-and-the-transmission-of-multidrug-resistant-tb-in-georgia
#18
Sarah Sengstake, Indra L Bergval, Anja R Schuitema, Jessica L de Beer, Jody Phelan, Rina de Zwaan, Taane G Clark, Dick van Soolingen, Richard M Anthony
BACKGROUND: The ongoing epidemic of multidrug-resistant tuberculosis (MDR-TB) in Georgia highlights the need for more effective control strategies. A new regimen to treat MDR-TB that includes pyrazinamide (PZA) is currently being evaluated and PZA resistance status will largely influence the success of current and future treatment strategies. PZA susceptibility testing was not routinely performed at the National Reference Laboratory (NRL) in Tbilisi between 2010 and September 2015. We here provide a first insight into the prevalence of PZA resistant TB in this region...
July 12, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28696636/-update-on-multidrug-resistant-tuberculosis-in-switzerland
#19
Judith Knuchel, Frédéric Lador, Paola M Soccal, Jean-Paul Janssens
Multi-resistant tuberculosis (MDR-TB) is a world-wide public-health problem with about half a million cases/year (of a total of 9 million cases of TB). Patients at highest risk for MDR-TB are those who have already been treated. Among other risk factors are: contact with an index case of MDR-TB, being a migrant, and originating from a country with a high incidence of MDR-TB. Switzerland has had so far a relatively small number of MDR-TB cases, with a slight increase over the past few years. Use of PCR and genotypic antibiograms allow a rapid detection of MDR-TB cases as well as initiating a more adapted treatment, which must however be finally adjusted on the basis of the phenotypic antibiogram...
November 16, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28694139/systematic-review-and-meta-analysis-of-the-nitrate-reductase-assay-for-drug-susceptibility-testing-of-mycobacterium-tuberculosis-and-the-detection-limits-in-liquid-medium
#20
Miri Kwak, Won-Kyu Lee, Young Ju Lim, Seung Heon Lee, Sungweon Ryoo
Recently, the need for rapid, reliable, and low-cost drug susceptibility testing (DST) methods has increased due to the emergence of multidrug-resistant Mycobacterium tuberculosis. Colorimetric methods of DST provide results more quickly than standard culture methods and are inexpensive than molecular methods. Thus, colorimetric methods, such as the nitrate reductase assay (NRA), are being recommended. We searched Medline PubMed for reports on the NRA for DST of M. tuberculosis written in English and published within the last five years...
July 8, 2017: Journal of Microbiological Methods
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