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https://www.readbyqxmd.com/read/28629354/acetone-leaf-extracts-of-some-south-african-trees-with-high-activity-against-escherichia-coli-also-have-good-antimycobacterial-activity-and-selectivity-index
#1
Ishaku L Elisha, Francien S Botha, Balungile Madikizela, Lyndy J McGaw, Jacobus N Eloff
BACKGROUND: Tuberculosis is a world-wide problem affecting humans and animals. There is increasing development of resistance of the pathogens to current antimycobacterial agents. Many authors have investigated activities of extracts and isolated compounds from plants. The traditional uses of plants have frequently been the criterion to select plants investigated. In this contribution, we investigate whether plant extracts with very good activity against Escherichia coli may also be active against mycobacteria...
June 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28619015/nontuberculosis-mycobacterial-infections-at-a-specialized-tuberculosis-treatment-centre-in-the-republic-of-korea
#2
Hee Jung Yoon, Hwa Young Choi, Moran Ki
BACKGROUND: The incidence of nontuberculous mycobacteria (NTM) infections is increasing worldwide, however formal evaluations of the epidemiology of NTM infections are limited. Understanding the trends and true prevalence of NTM is a major priority for optimizing infection control programmes and resources. The purpose of this study was to investigate the epidemiology, clinical manifestations, and radiologic findings in NTM-infected patients at specialized Tuberculosis (Tb) treatment centre in South Korea, which is endemic to Tb, and find solutions to control NTM infections...
June 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28599612/mycobacterioses-in-dogs-and-cats-from-buenos-aires-argentina
#3
Soledad Barandiaran, Marcela Martínez Vivot, Elvira Falzoni, María Jimena Marfil, Gabriela Pérez Tort, Paula Rovatti, Mónica Fernández, Ricardo Iachini, Fernanda Satek, Adriana Duchene, Martín José Zumárraga
Mycobacterioses can produce nonspecific clinical signs in dogs and cats that make diagnosis difficult. Furthermore, the full characterization of mycobacterial agents is not always possible or practical. We characterized mycobacteria detected through cytology in 12 dogs and 7 cats with generalized clinical signs from the province of Buenos Aires in Argentina. In dogs, molecular testing confirmed the presence of Mycobacterium avium subsp. hominissuis (MAH) in 8 cases and M. fortuitum in 1 case. All dogs were Miniature Schnauzers, suggesting that this breed may be more susceptible to M...
June 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28549494/antimicrobial-susceptibility-testing-and-molecular-characterization-of-mycobacterium-fortuitum-isolates-in-china
#4
Hui Wen Zheng, Yu Pang, Guang Xue He, Yuan Yuan Song, Yan Lin Zhao
We performed molecular identification of clinical isolates of Mycobacterium fortuitum (M. fortuitum) and conducted drug susceptibility testing to analyze the in vitro susceptibility of clinical M. fortuitum isolates and potential molecular mechanism conferring resistance to fluoroquinolone and macrolide drugs. The results showed that moxifloxacin had the highest in vitro activity against M. fortuitum, and most M. fortuitum isolates were resistant to clarithromycin and linezolid in China. The loss of genetic mutation in clarithromycin- and amikacin-resistant isolates indicates that some other intrinsic mechanism conferring clarithromycin and amikacin resistance plays an essential role in M...
May 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28516834/comparison-of-antemortem-and-environmental-samples-for-zebrafish-health-monitoring-and-quarantine
#5
Marcus J Crim, Christian Lawrence, Robert S Livingston, Andrei Rakitin, Shane J Hurley, Lela K Riley
Molecular diagnostic assays offer both exquisite sensitivity and the ability to test a wide variety of sample types. Varioustypes of environmental sample, such as detritus and concentrated water, might provide a useful adjunct to sentinels in routinezebrafish health monitoring. Similarly, antemortem sampling would be advantageous for expediting zebrafish quarantine,without euthanasia of valuable fish. We evaluated the detection of Mycobacterium chelonae, M. fortuitum, M. peregrinum,Pseudocapillaria tomentosa, and Pseudoloma neurophilia in zebrafish, detritus, pooled feces, and filter membranes after filtration of 1000-, 500-, and 150-mL water samples by real-time PCR analysis...
May 17, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28473389/draft-genome-sequence-of-mycobacterium-boenickei-cip-107829
#6
Amar Bouam, Catherine Robert, Olivier Croce, Anthony Levasseur, Michel Drancourt
Mycobacterium boenickei is a rapidly growing mycobacterium isolated for the first time from a leg wound in the United States. Its 6,506,908-bp draft genome exhibits a 66.77% G+C content, 6,279 protein-coding genes, and 59 predicted RNA genes. In silico DNA-DNA hybridization confirms its assignment to the Mycobacterium fortuitum complex.
May 4, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28471978/septicemia-and-pneumonia-due-to-mycobacterium-fortuitum-infection-in-a-patient-with-extronodal-nk-t-cell-lymphoma-nasal-type-a-case-report
#7
Jia Cong, Chenxi Wang, Li Ma, Shaoya Zhang, Jingwen Wang
RATIONALE: Mycobacterium fortuitum (M.fortuitum) is one of the rapidly growing nontuberculous mycobacterium (NTM) that is widespread in the environment. M.fortuitum can cause different types of disease including pulmonary disease, lymphadenitis, cutaneous disease, and disseminated disease. However, the infection presenting as septicemia is exceedingly rare. PATIENT CONCERNS: A 48-year-old immunocompromised male with extranodal NK/T-cell lymphoma, nasal type was admitted to the hospital because of high fever for 10 days...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28430099/mutual-interaction-enables-the-mycobacterial-plasmid-pal5000-origin-binding-protein-repb-to-recruit-repa-the-plasmid-replicase-to-the-origin
#8
Soniya Chatterjee, Madhu Manti Patra, Sourabh Samaddar, Arnab Basu, Sujoy K Das Gupta
The Mycobacterium fortuitum plasmid, pAL5000, is the most-studied member of a family of plasmids that are found in Actinobacteria. Its replication is brought about by the combined action of two plasmid-encoded replication proteins, RepA and RepB. RepB has earlier been shown to be a sigma factor homologue that possesses origin-binding activity. The mechanism by which RepA functions, and its relationship with RepB, if any, has not been explored yet. In this study, we show that RepA shares a common catalytic domain, with proteins belonging to the primase-polymerase and DNA polymerase X families...
April 22, 2017: Microbiology
https://www.readbyqxmd.com/read/28414672/a-strong-and-fortuitous-case-of-dyspnea
#9
R Hammer, M Sciaudone
CASE: A 48 year-old man with no past medical history was sent to our emergency department (ED); from a primary care clinic for hypertensive urgency of 200/130. The man reported an intermittent non-productive cough of approximately one year's duration and worsening dyspnea on exertion and orthopnea over the last month with lower extremity swelling. Of note, he emigrated from Honduras twenty years ago. Blood pressure normalized with administration of Lasix in the ED. Physical exam revealed rales in lung bases bilaterally, jugular venous distension, lower extremity pitting edema with serpiginous patches of erythema and excoriation, and a cardiac gallop...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28392413/isolation-and-identification-of-multiple-drug-resistant-nontuberculous-mycobacteria-from-organs-of-cattle-produced-typical-granuloma-lesions
#10
Guangyu Cheng, Donglei Xu, Jinling Wang, Chunfa Liu, Yang Zhou, Yongyong Cui, Hancan Liu, Kanglin Wan, Xiangmei Zhou
Nontuberculosis mycobacteria are widespread in the environment and some are zoonotic. 320 tissue samples with visible lesions were obtained from dairy cows and examined by histopathology. Eleven samples showed typical granulomatous lesions and a total of 8 strains were cultured. Three genes (16S rRNA, hsp65 and rpoB) were sequenced for species identification. All mycobacterial isolates were tested for rifampicin, isoniazid, ethambutol, streptomycin, capreomycin, kanamycin, para-aminosalicylic acid susceptibility...
April 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28387523/species-specific-risk-factors-treatment-decisions-and-clinical-outcomes-for-laboratory-isolates-of-less-common-nontuberculous-mycobacteria-in-washington-state
#11
Emily S Ford, David J Horne, Javeed A Shah, Carolyn K Wallis, Ferric C Fang, Thomas R Hawn
RATIONALE: Nontuberculous mycobacteria are a diverse group of environmental organisms that infrequently cause human disease. Understanding the epidemiologic and clinical characteristics associated with nontuberculous mycobacterial disease is needed to refine diagnostic and treatment strategies, particularly among the less commonly isolated species. OBJECTIVES: To improve knowledge of geographic variance of nontuberculous mycobacteria (NTM) species, to correlate detailed clinical information with isolation of specific NTM, and to examine the decision to treat and outcomes for specific NTM...
April 7, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28348502/nontuberculous-mycobacteria-in-saudi-arabia-and-gulf-countries-a-review
#12
REVIEW
Hawra Al-Ghafli, Sahal Al-Hajoj
Nontuberculous Mycobacteria (NTM) are causing growing health problems worldwide. This is indicated by an increasing amount of scientific reports showing not only well-identified species reemerging but also emergence of new species. The emergence and reemergence of NTM are particularly worrying in developing countries due to scarce published data and improper identification. Here we aimed to examine the main epidemiological aspects and diagnostic challenges associated with NTM in countries of the Gulf Cooperation Council (GCC) and compare these findings to the international arena findings...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28344532/atypical-mycobacterial-infections-of-the-upper-extremity-becoming-more-atypical
#13
Mariela Lopez, Julie Croley, Kevin D Murphy
Background: Atypical mycobacterial infections are uncommon and characterized by a chronic, indolent course before diagnosis. Historically, these infections are associated with marine-related injury and/or immune dysfunction. Our institution has successfully diagnosed and treated an increasing number of these infections. The objective of this study is to review our experience with these rare infections and verify the developing trends encountered. Methods: A retrospective review was performed for patients with positive nontuberculous mycobacterial cultures of the upper extremity from 2000 to 2013...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28333709/mycobacterium-fortuitum-bloodstream-infection-in-a-very-low-birth-weight-preterm-neonate
#14
Kate Hodgson, Sandra Isabel, Patrick McNamara, Astrid Petrich, Ari Bitnun
Mycobacterium fortuitum is a rapidly growing Mycobacterium species that is a rare cause of disease, primarily in immunocompromised patients. We present a preterm very low birth weight neonate who developed M. fortuitum bloodstream infection, where 16S rDNA sequencing allowed accurate identification. Cure was achieved by line removal and adjuvant combination treatment with amikacin, ciprofloxacin and clarithromycin.
March 22, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28331837/public-health-relevance-of-non-tuberculous-mycobacteria-among-afb-positive-sputa
#15
Prabha Desikan, Karuna Tiwari, Nikita Panwalkar, Saima Khaliq, Manju Chourey, Reeta Varathe, Shaina Beg Mirza, Arun Sharma, Sridhar Anand, Manoj Pandey
BACKGROUND: Sputum smear microscopy for acid fast bacilli (AFB) is used by most public health programmes to detect tuberculosis. While most AFB in countries endemic for tuberculosis are Mycobacterium tuberculosis (MTB), some may also be non-tuberculous mycobacteria (NTM). The inability to differentiate NTM from MTB by sputum smear microscopy may lead to erroneous diagnoses of tuberculosis, leading in turn to inappropriate therapy. METHODS: This was a retrospective study of consecutive sputum samples received from November 2013 to March 2015 in the Department of Microbiology, Bhopal Memorial Hospital & Research Centre, Bhopal, India...
March 2017: Germs
https://www.readbyqxmd.com/read/28330892/in-vitro-susceptibility-testing-of-tedizolid-against-nontuberculous-mycobacteria
#16
Barbara A Brown-Elliott, Richard J Wallace
Tedizolid is a new oxazolidinone with improved in vitro and intracellular potency against Mycobacterium tuberculosis, including multidrug-resistant strains, and some species of nontuberculous mycobacteria (NTM) compared with that of linezolid. Using the current Clinical and Laboratory Standards Institute (CLSI)-recommended method of broth microdilution, susceptibility testing of 170 isolates of rapidly growing mycobacteria showed equivalent or lower (1- to 8-fold) MIC50 and/or MIC90 values for tedizolid compared with that for linezolid...
June 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28317802/port-site-infections-by-nontuberculous-mycobacterium-a-retrospective-clinico-microbiological-study
#17
Roumi Ghosh, Soumen Das, Asmita De, Harish Kela, Makhan Lal Saha, Prasanta Kumar Maiti
BACKGROUND: Port-site infection (PSI) is a prevailing, chronic, nagging, treatment refractory complication of laparoscopic surgery (LS). It neutralizes the advantages of minimally invasive surgery and increases morbidity, treatment cost of patient, leading to loss of confidence on operating surgeon. PSIs are preventable with appropriate preoperative, intraoperative, and postoperative measures. Atypical mycobacterium is most commonly associated with nonhealing postlaparoscopic wound infections, causing outbreaks or sporadic cases worldwide...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28297817/-distribution-and-drug-resistance-of-nontuberculous-mycobacteria-in-beijing
#18
J Zhang, J R Su, B C Ding, J W Liu, J L Yi, X Y Yang, N H Wang, S M Wang
Objective: To analyze the distribution and drug resistance of nontuberculous mycobacteria(NTM) in Beijing. Methods: Using PCR-fluorescence probe method we identified 1 552 mycobacterial isolates in 2009 and 1 553 mycobacterial isolates in 2013, which were stored by Beijing Research Institute for Tuberculosis Control.All identified NTM strains were confirmed by 16S rRNA gene sequencing, and drug sensitivity testing was performed by using 1% ratio method.SPSS 13.0 was used for statistical analysis. Results: The isolation rate for NTM in 2009 and 2013 was 3...
March 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28270102/antimicrobial-susceptibility-testing-of-rapidly-growing-mycobacteria-isolated-in-japan
#19
Shuji Hatakeyama, Yuki Ohama, Mitsuhiro Okazaki, Yoko Nukui, Kyoji Moriya
BACKGROUND: Difficult-to-treat infections caused by rapidly growing mycobacteria (RGM) are increasingly observed in clinical settings. However, studies on antimicrobial susceptibilities and effective treatments against RGM in Japan are limited. METHODS: We conducted susceptibility testing of potential antimicrobial agents, including tigecycline and tebipenem, against RGM. Clinical RGM isolates were collected from a university hospital in Japan between December 2010 and August 2013...
March 7, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28242674/in-vitro-activity-of-bedaquiline-against-nontuberculous-mycobacteria-in-china
#20
Yu Pang, Huiwen Zheng, Yaoju Tan, Yuanyuan Song, Yanlin Zhao
The main goal of our study was to evaluate the in vitro bedaquiline susceptibility of six prevalent species of pathogenic nontuberculous mycobacteria (NTM) in China. In addition, we investigated the potential molecular mechanisms contributing to bedaquiline resistance in the different NTM species. Among slowly growing mycobacteria (SGM), bedaquiline exhibited the highest activity against Mycobacterium avium; the MIC50 and MIC90 values were 0.03 and 16 mg/liter, respectively. Among rapidly growing mycobacteria (RGM), Mycobacterium abscessus subsp...
May 2017: Antimicrobial Agents and Chemotherapy
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