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https://www.readbyqxmd.com/read/27904603/prevalence-of-nontuberculous-mycobacteria-isolated-from-environmental-samples-in-iran-a-meta-analysis
#1
REVIEW
Azad Khaledi, Abbas Bahador, Davood Esmaeili, Alireza Tafazoli, Kiarash Ghazvini, Davood Mansury
BACKGROUND: While the most nontuberculous mycobacteria (NTMs) species are considered as opportunistic pathogens, some of them are related to several human infections. It is believed that environment is the main source for these infections. Distribution and scattering pattern of NTMs has not been well studied in Iran and a few studies about this subject have been done, so the aim of this study was to determine prevalence of NTMs in environmental samples from Iran. MATERIALS AND METHODS: Data about prevalence of NTMs in environmental samples from Iran were obtained by searching databases...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27890417/mycobacterium-fortuitum-empyema-associated-with-an-indwelling-pleural-catheter-case-report-and-review-of-the-literature
#2
Paul Blair, Mahdi Moshgriz, Marc Siegel
Mycobacterium fortuitum is a rapidly growing mycobacterium (RGM) that is an uncommon cause of healthcare-associated infections. The most common infections caused by M. fortuitum include skin, soft tissue, and catheter-related infections. Although occasionally cultured from sputum samples, M. fortuitum is a rare cause of pulmonary disease. We report a case of M. fortuitum empyema associated with an infected pleural catheter and review M. fortuitum pulmonary infections.
November 24, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27887611/the-performance-of-interferon-gamma-release-assay-in-nontuberculous-mycobacterial-diseases-a-retrospective-study-in-china
#3
Mao-Shui Wang, Jun-Li Wang, Xin-Feng Wang
BACKGROUND: The interferon-gamma release assay (IGRA) is more specific than the tuberculin skin test to discriminate between tuberculosis (TB) and nontuberculous mycobacterial (NTM) diseases. Here we performed a retrospective study to evaluate the performance of the T-SPOT.TB in patients with NTM diseases. METHODS: Between March, 2013 and Nov, 2015, a total of 58 patients with NTM diseases had a T-SPOT.TB performed were enrolled, 30 patients had definite NTM diseases, 28 had probable diseases...
November 25, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27884340/use-of-an-experimental-model-to-evaluate-infection-resistance-of-meshes-in-abdominal-wall-surgery
#4
Ramón Pérez-Tanoira, C Lévano-Linares, Á Celdrán-Uriarte, M C Isea-Peña, M Sánchez De Molina, C García-Vasquez, J Esteban-Moreno
BACKGROUND: Staphylococcal species are the most common organisms causing prosthetic mesh infections, however, infections due to rapidly growing mycobacteria are increasing. This study evaluates the resistance of biomaterial for abdominal wall prostheses against the development of postoperative infection in a rat model. MATERIAL AND METHODS: In 75 rats, we intramuscularly implanted three different types of prostheses: (1) low-density polypropylene monofilament mesh (PMM), (2) high-density PMM, and (3) a composite prosthesis composed of low-density PMM and a nonporous hydrophilic film...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27847012/prevalence-and-species-spectrum-of-both-pulmonary-and-extrapulmonary-nontuberculous-mycobacteria-isolates-at-a-tertiary-care-center
#5
Jyoti Umrao, Dharamveer Singh, Amreen Zia, Swati Saxena, Surendra Sarsaiya, Shushma Singh, Jahanarah Khatoon, Tapan N Dhole
OBJECTIVE/BACKGROUND: Nontuberculous mycobacteria (NTM) infection associated with pulmonary and extrapulmonary disease has been increasing globally. Despite an increase in incidence rate of NTM infection, its prevalence, species diversity, and circulation pattern in India is largely unknown. This study sought to investigate the overall burden and diversity of NTM among both pulmonary and extrapulmonary clinical isolates from a Northern Indian population. METHODS: The study was conducted in the Department of Microbiology, from January 2013 to December 2015...
September 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/27797799/mycobacterium-fortuitum-infection-of-the-scalp-after-a-skin-graft
#6
Blaine D Smith, Ioannis N Liras, Ignacio A De Cicco, Gabriel Marcelo Aisenberg
Mycobacterium fortuitum is a non-tuberculous mycobacterium found in the soil and water of most regions of the world, and it can cause disease in immunocompetent and immunocompromised hosts. We present a 52-year-old man who developed a scalp abscess under a free flap for cranium coverage after a motor vehicle accident. Culture of material drained from the abscess grew M. fortuitum.
October 19, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27782812/real-time-pcr-for-the-rapid-identification-and-drug-susceptibility-of-mycobacteria-present-in-bronchial-washings
#7
Thilini Piushani Keerthirathne, Dhammika Nayoma Magana-Arachchi, Dushantha Madegedara, Suneth Sithumini Sooriyapathirana
BACKGROUND: Mycobacteria have a spectrum of virulence and different susceptibilities to antibiotics. Distinguishing mycobacterial species is vital as patients with non-tuberculous mycobacterial (NTM) infections present clinical features that are similar to those of patients with tuberculosis. Thus, rapid differentiation of Mycobacterium tuberculosis complex from NTM is critical to administer appropriate treatment. Hence the aim of the study was to rapid identification of mycobacterial species present in bronchial washings using multiplex real time Polymerase Chain Reaction (PCR) and to determine the drug susceptibility in identified mycobacterial species...
October 26, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27747884/mycobacteria-in-aquarium-fish-results-of-a-3-year-survey-indicate-caution-required-in-handling-pet-shop-fish
#8
D Kušar, U Zajc, V Jenčič, M Ocepek, J Higgins, M Žolnir-Dovč, M Pate
Fish are commonly infected with non-tuberculous mycobacteria (NTM), which should be regarded as potential pathogens when handling aquarium fish and equipment. This study examined 107 aquarium fish from pet shops. Cultivation of the fish samples using different selective media was conducted for identification of NTM. Isolates were identified using the GenoType Mycobacterium common mycobacteria and additional species assays, sequencing of the 16S rRNA and rpoB genes, and real-time PCR assay for identification of Mycobacterium (M...
October 17, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/27708718/a-single-capsule-formulation-of-rhb-104-demonstrates-higher-anti-microbial-growth-potency-for-effective-treatment-of-crohn-s-disease-associated-with-mycobacterium-avium-subspecies-paratuberculosis
#9
Ahmad Qasem, Mitra Safavikhasraghi, Saleh A Naser
BACKGROUND: Most recently we reported that RHB‑104 triple antibiotics combination in culture is bactericidal and should be effective for treatment of Crohn's disease (CD)-associated with Mycobacterium avium subspecies paratuberculosis (MAP) (Alcedo et al. in Gut Pathog 14:32, 2016). The combination exhibited unique synergistic antimicrobial growth activity. The proprietary RHB-104 capsule formulation contains active ingredients (63.3 % Clarithromycin (CLA), 6.7 % Clofazimine (CLO) and 30 % Rifabutin (RIF))...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27664225/non-tuberculous-mycobacteria-mimic-of-mdr-tb-infection-in-pott-s-disease
#10
Manoj Kumar, Sheetal Verma, Tapan N Dhole, Raj Kumar
A 34 year-old woman presented with history of progressive back pain which was diagnosed as Pott's disease with recurrent paravertebral abscess, and had received a total of 23 months of antitubercular treatment for lumbar infection. The patient was non-responsive to treatment and was referred to a higher centre where the infection was finally identified as non-tuberculous mycobacterium (Mycobacterium fortuitum) by genotypic testing. The drugs were initiated according to results of drug susceptibility testing by the broth microdilution method...
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27619156/antimycobacterial-activity-and-low-cytotoxicity-of-leaf-extracts-of-some-african-anacardiaceae-tree-species
#11
Prudence N Kabongo-Kayoka, Jacobus N Eloff, Chikwelu L Obi, Lyndy J McGaw
Treatment of tuberculosis (TB) is a challenge because of multidrug-resistant and extremely drug-resistant strains of Mycobacterium tuberculosis. Plant species contain antimicrobial compounds that may lead to new anti-TB drugs. Previous screening of some tree species from the Anacardiaceae family revealed the presence of antimicrobial activity, justifying further investigations. Leaf extracts of 15 Anacardiaceae tree species were screened for antimycobacterial activity using a twofold serial microdilution assay against the pathogenic Mycobacterium bovis and multidrug resistant M...
September 13, 2016: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/27616445/species-diversity-and-molecular-characterization-of-nontuberculous-mycobacteria-in-hospital-water-system-of-a-developing-country-iran
#12
Davood Azadi, Hasan Shojaei, Mahnaz Pourchangiz, Ramin Dibaj, Masoumeh Davarpanah, Abass Daei Naser
BACKGROUND: Hospital environment is of crucial importance in cross-transmission of opportunistic pathogens to the patients. Nontuberculous mycobacteria have the remarkable capability to withstand the adverse condition of hospital environments and pose a potential threat to the health of patients. The current study aimed to assess the frequency and diversity of mycobacteria in hospital water of a developing country using a combination of conventional and molecular methods. METHODS: A total of 148 hospital water samples collected from 38 hospitals were analyzed for the presence of mycobacteria using standard protocols for isolation and characterization of the isolates...
September 9, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27567903/identification-of-antimicrobial-activity-among-new-sulfonamide-metal-complexes-for-combating-rapidly-growing-mycobacteria
#13
Vanessa Albertina Agertt, Pauline Cordenonsi Bonez, Grazielle Guidolin Rossi, Vanessa da Costa Flores, Fallon Dos Santos Siqueira, Caren Rigon Mizdal, Lenice Lorenço Marques, Gelson Noe Manzoni de Oliveira, Marli Matiko Anraku de Campos
Mycobacteriosis is a type of infection caused by rapidly growing mycobacteria (RGM), which can vary from localized illness, such as skin disease, to disseminated disease. Amikacin, cefoxitin, ciprofloxacin, clarithromycin, doxycycline, imipenem and sulfamethoxazole are antimicrobial drugs chosen to treat such illnesses; however, not all patients obtain the cure. The reason why the treatment does not work for those patients is related to the fact that some clinical strains present resistance to the existing antimicrobial drugs; thereby, the research of new therapeutic approaches is extremely relevant...
October 2016: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/27554273/antibiofilm-effect-of-antimicrobials-used-in-the-therapy-of-mycobacteriosis
#14
Vanessa da Costa Flores, Fallon Dos Santos Siqueira, Caren Rigon Mizdal, Pauline Cordenonsi Bonez, Vanessa Albertina Agertt, Sílvio Terra Stefanello, Grazielle Guidolin Rossi, Marli Matiko Anraku de Campos
Rapidly growing mycobacteria (RGM) are opportunistic pathogens found in the environment. When in biofilms, mycobacteria is highly resistant to antibacterial treatments. The purpose of this study is to evaluate the antibiofilm activity of antimicrobials commonly used in therapy against mycobacteria. The antimicrobial susceptibility of Mycobacterium abscessus, Mycobacterium fortuitum and Mycobacterium massiliense was determined in planktonic and sessile populations. The antimicrobials amikacin, ciprofloxacin, clarithromycin, doxycycline, imipenem and sulfamethoxazole were tested...
October 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27549109/direct-matrix-assisted-laser-desorption-ionisation-time-of-flight-mass-spectrometry-identification-of-mycobacteria-from-colonies
#15
D Zingue, C Flaudrops, M Drancourt
Matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) identification of mycobacteria requires a standard acetonitrile/formic acid pre-MALDI-TOF-MS. We prospectively compared this standard protocol with direct deposit with matrix for the identification of mycobacteria cultured on solid media. We first verified that Mycobacterium tuberculosis was killed after it was mixed with matrix. Then, 111 Mycobacterium isolates previously identified by partial rpoB gene sequencing were tested in parallel by the two protocols...
August 23, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27539718/concurrent-nontuberculous-mycobacteria-infection-and-high-grade-anterior-mediastinal-extraskeletal-osteosarcoma-esos-is-there-a-connection
#16
Gabriel T Faz, Mahmoud Eltorky, Bernard Karnath
BACKGROUND Extraskeletal osteosarcomas (ESOS) of the mediastinum are extremely rare and may present with concurrent nontuberculous mycobacteria infection. CASE REPORT We present the second documented case of high-grade anterior mediastinal extraskeletal osteosarcoma in a 59-year-old man with a history of treated, latent tuberculosis (TB). Sputum samples grew Mycoplasma avium complex and Mycobacterium fortuitum. Imaging showed a right-sided 7.6 cm mass with compression of the main bronchus. Subsequent biopsy with vimentin staining established the diagnosis of ESOS...
2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27453998/investigation-and-management-of-an-outbreak-of-multispecies-mycobacteriosis-in-australian-lungfish-neoceratodus-fosteri-including-the-use-of-triple-antibiotic-treatment
#17
T B Strike, Y Feltrer, E Flach, S K Macgregor, S Guillaume
Disease due to non-tuberculous mycobacteria (NTM) is common in fish. Current recommendations focus on outbreak management by depopulating entire fish stocks and disinfecting tanks. Treatment is not advocated. Treatment may be appropriate, however, where individual, valuable fish are concerned. ZSL London Zoo managed an outbreak of mycobacteriosis in a valuable group of imported F1 captive-bred Australian lungfish (Neoceratodus fosteri) by depopulation, isolation, extensive testing and daily oral antibiotic treatment...
July 25, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/27451824/multiple-lumps-in-the-breast-due-to-mycobacterium-fortuitum
#18
Shirish S Chandanwale, Ishita Gulati, Dadaso S Baravkar, Sumedha P Shinde, Neha Mishra
Although breast tissue is the most resistant to tuberculosis, its incidence is increasing worldwide. High incidence of breast tuberculosis is presumed in India. The rapidly growing nontubercular mycobacteria, such as Mycobacterium fortuitum and Mycobacterium chelonae, are of increasing clinical importance because infections due to these organisms are often hospital acquired. The true incidence of M. fortuitum is unknown but it has been estimated to be between 4 and 6 cases per one million people. It causes skin or soft tissue infections following trauma or surgery...
April 2016: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/27451822/drug-susceptibility-testing-of-rapidly-growing-mycobacteria-in-extrapulmonary-tuberculosis
#19
Geeta V Gole, Reena Set, Nishat Khan, Jayanthi Shastri
There has been an increasing awareness of the rapidly growing mycobacteria (RGM), of which numerous species and phylogenetic groups are clearly established human pathogens. It is important to appropriately distinguish RGM from other mycobacteria, as first-line antituberculous drugs are ineffective for their treatment. Variability in susceptibility of RGM is seen in relation to species, different geographical areas, and time. Therefore, we conducted a study to speciate the isolates of RGM and perform antimicrobial susceptibility testing...
April 2016: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/27439781/clinical-and-microbiological-profile-of-non-tuberculous-mycobacterial-endophthalmitis-experience-in-a-tertiary-eye-care-centre-in-southern-india
#20
Remya Mareen Paulose, Joveeta Joseph, Raja Narayanan, Savitri Sharma
BACKGROUND: Endophthalmitis caused by non-tuberculous mycobacteria (NTM) is a rare condition seen after surgery and trauma. This study reports a retrospective, consecutive, non-comparative case series of 5 patients referred to L. V. Prasad Eye Institute, Hyderabad, and diagnosed with culture-proven NTM endophthalmitis between January 2004 and April 2015. Data collected included demographic information, presenting features, microbiology investigation, treatment course, and final visual outcome...
December 2016: Journal of Ophthalmic Inflammation and Infection
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