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https://www.readbyqxmd.com/read/29450214/-mycobacterium-abscessus-complex-infections-a-retrospective-cohort-study
#1
Maroun Sfeir, Marissa Walsh, Rossana Rosa, Laura Aragon, Sze Yan Liu, Timothy Cleary, Marylee Worley, Corey Frederick, Lilian M Abbo
Background: Infections caused by Mycobacterium abscessus group strains are usually resistant to multiple antimicrobials and challenging to treat worldwide. We describe the risk factors, treatment, and clinical outcomes of patients in 2 large academic medical centers in the United States. Methods: A retrospective cohort study of hospitalized adults with a positive culture for M. abscessus in Miami, Florida (January 1, 2011, to December 31, 2014). Demographics, comorbidities, the source of infection, antimicrobial susceptibilities, and clinical outcomes were analyzed...
February 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29441757/changing-epidemiology-of-nontuberculous-mycobacterial-lung-diseases-in-a-tertiary-referral-hospital-in-korea-between-2001-and-2015
#2
Ryoung Eun Ko, Seong Mi Moon, Soohyun Ahn, Byung Woo Jhun, Kyeongman Jeon, O Jung Kwon, Hee Jae Huh, Chang Seok Ki, Nam Yong Lee, Won Jung Koh
This study investigated the changes in the major etiologic organisms and clinical phenotypes of nontuberculous mycobacterial lung disease (NTM-LD) over a recent 15-year period in Korea. The increase of number of patients with NTM-LD was primarily due to an increase of Mycobacterium avium complex (MAC) lung disease (LD). Among MAC cases, the proportion of M. avium increased compared with M. intracellulare, whereas the incidence of M. abscessus complex and M. kansasii LD remained relatively stable. The proportion of cases of the nodular bronchiectatic form increased compared with the fibrocavitary form of NTM-LD...
February 19, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29421865/in-vitro-efficacy-of-free-and-nanoparticle-formulations-of-gallium-iii-meso-tetraphenylporphyrine-against-mycobacterium-avium-and-mycobacterium-abscessus-and-gallium-biodistribution-in-mice
#3
Seoung-Ryoung Choi, Bradley E Britigan, Barbara Switzer, Traci Hoke, David Moran, Prabagaran Narayanasamy
The nontuberculous mycobacterial (NTM) pathogens, M. avium complex (MAC) and M. abscessus, can result in severe pulmonary infections. Current antibiotics confront significant challenges for treatment of these NTM infections due to emerging multidrug-resistance. Thus, development of new antibiotics targeted against these agents is needed. We examined the inhibitory activities of Ga(NO3)3, GaCl3, gallium meso-tetraphenylporphyrin (GaTP) and several derivative nanoparticles (GaNP) against intra- and extracellular M...
February 8, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29387512/mycobacteremia-from-crushed-hydromorphone-tablet-injection
#4
Joseph M Banno, Katherine Shield, Krunal Patel, Anupam A Sule
Mycobacterium abscessus is a fast growing, non-tubercular mycobacterium (NTM) found in water. NTM bacteremia is usually seen in immunocompromised patients who have intravascular catheters. Mycobacterium abscessus bacteremia is often caused by exposure to contaminated water supply in hemodialysis units. A 28-year-old female with poorly controlled diabetes mellitus, end stage renal disease (on hemodialysis via Ash catheter), and recurrent deep vein thrombosis presented to the hospital with proximal right leg deep vein thrombosis...
November 27, 2017: Curēus
https://www.readbyqxmd.com/read/29386727/matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms-for-rapid-identification-of-mycobacterium-abscessus
#5
Raghu Sriram, A K Sahni, Vaibhav L Dudhat, A K Pujahari
Background: Nontuberculous mycobacteria are increasingly being implicated in infections and have become an important cause of health care associated infections. Mycobacterium abscessus, a rapidly growing mycobacteria, is of particular concern as it tends to be resistant to commonly used therapeutic options. Conventional phenotypic methods for speciation of mycobacteria are time consuming, labor intensive and not always reliable. Molecular methods require expertise and are expensive. The study was used to evaluate the use of matrix associated laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) as a means of rapid identification of M...
January 2018: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/29368988/activities-of-dual-combinations-of-antibiotics-against-multidrug-resistant-nontuberculous-mycobacteria-recovered-from-patients-with-cystic-fibrosis
#6
Matthew Schwartz, Stefanie Fisher, Elizabeth Story-Roller, Gyanu Lamichhane, Nicole Parrish
Patients with cystic fibrosis (CF) are at risk for recurrent pulmonary infections due to increased viscosity of airway secretions, leading to persistent colonization with pathogenic bacteria, including nontuberculous mycobacteria (NTM). Extensive antibiotic use for treatment of infections has led to increasing antimicrobial resistance, which is a significant barrier to the treatment of NTMs. We examined the in vitro activity of several antibiotics against a selection of the most drug-resistant clinical isolates of Mycobacterium abscessus, Mycobacterium chelonae, and Mycobacterium avium complex recovered from CF patients at our institution, as well as paired combinations of antibiotics against a subset of M...
January 25, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29359876/a-successful-aggressive-surgical-and-medical-approach-to-pulmonary-artery-obstruction-due-to-mycobacterium-abscessus-infection-post-lung-transplantation
#7
Sakhee Kotecha, Olivia C Smibert, Atsuo Doi, Julian Gooi, Orla Morrissey, Miranda Paraskeva, Greg I Snell, David McGiffin
Mycobacterium abscessus infection following lung transplantation has historically been associated with poor outcomes. We report a case of bilateral lung retransplantation complicated by obstruction of the right pulmonary artery secondary to M. abscessus mycotic aneurysm. Aggressive surgical management, including reconstruction of the right pulmonary artery was undertaken with prolonged antimicrobial therapy. 36 months later, antibiotics have been discontinued and the patient has stable soft tissue chest wall disease with good graft function...
January 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29359872/mycobacterium-abscessus-infections-in-lung-transplant-recipients-15-year-experience-from-a-single-institution
#8
Morsal Osmani, David Sotello, Salvador Alvarez, John A Odell, Matthew Thomas
PURPOSE: To evaluate our institutional experience with Mycobacterium abscessus infections occurring in lung transplant recipients (LTR). METHODS: We retrospectively reviewed our prospectively collected institutional adult lung transplant database from 2001 to 2015 to identify patients with M. abscessus or Mycobacterium chelonae/abscessus infection before or after transplantation. Untreated, colonized patients were excluded from the study. Electronic health records of 9 out of 516 lung recipients (1...
January 23, 2018: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29343644/identification-of-genes-required-for-mycobacterium-abscessus-growth-in-vivo-with-a-prominent-role-of-the-esx-4-locus
#9
Laura Laencina, Violaine Dubois, Vincent Le Moigne, Albertus Viljoen, Laleh Majlessi, Justin Pritchard, Audrey Bernut, Laura Piel, Anne-Laure Roux, Jean-Louis Gaillard, Bérengère Lombard, Damarys Loew, Eric J Rubin, Roland Brosch, Laurent Kremer, Jean-Louis Herrmann, Fabienne Girard-Misguich
Mycobacterium abscessus, a rapidly growing mycobacterium (RGM) and an opportunistic human pathogen, is responsible for a wide spectrum of clinical manifestations ranging from pulmonary to skin and soft tissue infections. This intracellular organism can resist the bactericidal defense mechanisms of amoebae and macrophages, an ability that has not been observed in other RGM. M. abscessus can up-regulate several virulence factors during transient infection of amoebae, thereby becoming more virulent in subsequent respiratory infections in mice...
January 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29332650/amplification-of-hsp-65-gene-and-usage-of-restriction-endonuclease-for-identification-of-non-tuberculous-rapid-grower-mycobacterium
#10
Ajoy Kumar Verma, Rohit Sarin, Vijay Kumar Arora, Gavish Kumar, Jyoti Arora, Paras Singh, Vithal Prasad Myneedu
BACKGROUND: The rapid grower mycobacteria have emerged as significant group of human pathogen amongst the Runyon group IV organisms that are capable of causing infection in both the healthy and immunocompromised hosts. Study aimed to identification of species amongst rapid grower non tuberculous mycobacterial isolates by polymerase chain reaction - restriction enzyme analysis (PRA). Analysis and comparison of results with standard biochemical tests. METHODS: Rapid grower non tuberculous mycobacteria had been collected from liquid culture section during the study period...
January 2018: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/29329759/treatment-outcomes-of-macrolide-susceptible-mycobacterium-abscessus-lung-disease
#11
Hayoung Choi, Byung Woo Jhun, Su-Young Kim, Dae Hun Kim, Hyun Lee, Kyeongman Jeon, O Jung Kwon, Hee Jae Huh, Chang-Seok Ki, Nam Yong Lee, Sung Jae Shin, Charles L Daley, Won-Jung Koh
Mycobacterium abscessus lung disease is difficult to treat due to inducible resistance to macrolides. However, 15%-20% of isolates are macrolide susceptible. In 14 patients with macrolide-susceptible M. abscessus lung disease, all isolates had nonfunctional erm(41) gene, and sputum culture conversion rate was achieved in 93% (13/14) following antibiotic therapy.
December 16, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29311080/mycobacterium-abscessus-smooth-and-rough-morpohotypes-form-antimicrobial-tolerant-biofilm-phenotypes-but-are-killed-by-acetic-acid
#12
Gillian Clary, Smitha Sasindran, Nathan Nesbitt, Laurel Mason, Sara Cole, Abul Azad, Karen McCoy, Larry S Schlesinger, Luanne Hall-Stoodley
Mycobacterium abscessus has emerged as an important pathogen in people with chronic inflammatory lung diseases such as cystic fibrosis, and recent reports suggest that it may be transmissible by fomites. M. abscessus exhibits two major colony morphology variants: a smooth morphotype (MaSm ) and a rough morphotype (MaRg ). Biofilm formation, prolonged intracellular survival, and colony variant diversity can each contribute to the persistence of M. abscessus and other bacterial pathogens in chronic pulmonary diseases...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29276785/mycobacterium-abscessus-disease-in-lung-transplant-recipients-diagnosis-and-management
#13
Satish Chandrashekaran, Patricio Escalante, Cassie C Kennedy
Mycobacterium abscessus complex (MAbsC ) disease in lung transplant recipients is increasingly being recognized as an important cause of graft function decline and suboptimal outcomes. Lung transplant recipients appear to be at the highest risk of MAbsC among solid organ transplant recipients, as they have more intense immunosuppression, and the organisms preferentially inhabit the lungs. MAbsC is the most resistant species of rapidly growing mycobacteria and difficult to treat, causing considerable mortality and morbidity in immunocompetent and immunosuppressed patients...
December 2017: Journal of Clinical Tuberculosis and Other Mycobacterial Diseases
https://www.readbyqxmd.com/read/29273829/isolated-subcutaneous-nontuberculous-mycobacterial-infection-a-rare-case-initially-mischaracterized-as-a-soft-tissue-malignancy
#14
Hee Young Choi, Min Hee Lee, Jong-Seok Lee, In Hye Song, Kyung-Ja Cho
The occurrence of nontuberculous mycobacterial (NTM) infection is rare, and the involvement of the musculoskeletal system is even less common. However, the incidence of soft tissue and skin NTM infection is increasing, particularly in patients who undergo injections and minor surgical procedures. Given the non-specific clinical manifestations of NTM infection, the lack of knowledge among physicians regarding this rare infection could lead to inaccurate and delayed diagnosis. Herein, we present a case of an isolated subcutaneous NTM infection caused by Mycobacterium abscessus in the upper back of an immunocompetent 68-year-old woman...
December 22, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29245262/acute-postcataract-endophthalmitis-at-a-referral-center-in-northern-taiwan-causative-organisms-clinical-features-and-visual-acuity-outcomes-after-treatment-a-retrospective-cohort-study
#15
Yi-Hao Chen, Jiann-Torng Chen, Ming-Cheng Tai, Yu-Ching Chou, Ching-Long Chen
Acute-onset endophthalmitis after cataract surgery is a rare but serious complication. In this study, we identified the clinical profile of acute-onset endophthalmitis after cataract surgery using a retrospective review between January 1, 2009 and December 31, 2015 at a referral center in northern Taiwan. Twenty-five eyes of 25 patients with endophthalmitis were included; 60% were male. The mean age at diagnosis was 70.44 ± 1.66 years. The right eye was affected in 44% of patients. The mean time of cataract surgery to hospital was 12...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29241819/cyclophostin-and-cyclipostins-analogs-new-promising-molecules-to-treat-mycobacterial-related-diseases
#16
Phuong Chi Nguyen, Abdeldjalil Madani, Pierre Santucci, Benjamin P Martin, Rishi R Paudel, Sandrine Delattre, Jean-Louis Herrmann, Christopher D Spilling, Laurent Kremer, Stéphane Canaan, Jean-François Cavalier
The progression of mycobacterial diseases requires the development of new therapeutics. Here, we evaluated the efficacy and selectivity of a panel of Cyclophostin and Cyclipostins analogs (CyCs) against various bacteria and mycobacteria. The activity of these 26 CyCs was first assayed using the agar plate method. Compounds exhibiting a 50-100% growth inhibition rate were then selected to determine their MIC using the REMA assay. The best drug candidate was further tested against mycobacterial clinical isolates and bacteria responsible for nosocomial infections...
December 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29234594/successful-use-of-linezolid-for-refractory-mycobacterium-abcessus-infection-a-case-report
#17
Teppei Inoue, Akihito Tsunoda, Eriko Nishimoto, Kohei Nishida, Yuka Komatsubara, Rintaro Onoe, Junko Saji, Masamichi Mineshita
A 51-year-old male patient was receiving treatment for Mycobacterium abscessus infection for approximately 10 years. However, as his condition gradually progressed to type II respiratory insufficiency, he was referred to our hospital, which was near his home. Computed tomography on his first visit revealed an abscess in the right lower lobe. Because respiratory insufficiency was evident, he was admitted the same day. We began treatment with meropenem, amikacin, and clarithromycin, but his symptoms did not improve...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29227218/association-between-sequevar-and-antibiotic-treatment-outcome-in-patients-with-mycobacterium-abscessus-complex-infections-in-japan
#18
Shiomi Yoshida, Kazunari Tsuyuguchi, Takehiko Kobayashi, Motohisa Tomita, Yoshikazu Inoue, Seiji Hayashi, Katsuhiro Suzuki
PURPOSE: Macrolide susceptibility differs between subspecies in the Mycobacterium abscessus complex, likely due to differences in erm(41) sequevars. Patients with M. abscessus complex infection generally show poor clinical outcomes in response to antibiotic treatment. Here, the association between genotype and treatment outcome was investigated. METHODOLOGY: We collected 69 isolates from 35 patients with non-cystic fibrosis bronchiectasis: 24 had M. abscessus complex lung disease and non-cystic fibrosis bronchiectasis, and 11 were colonized...
December 11, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29217419/in-vitro-activity-of-tedizolid-against-the-mycobacterium-abscessus-complex
#19
Fabrice Compain, Daria Soroka, Beate Heym, Jean-Louis Gaillard, Jean-Louis Herrmann, Delphine Dorchène, Michel Arthur, Vincent Dubée
Infections due to Mycobacterium abscessus carry a poor prognosis since this rapidly growing mycobacterium is intrinsically resistant to most antibiotics. Here, we evaluate the in vitro activity of the new oxazolidinone tedizolid against a collection of 44M. abscessus clinical isolates. The MIC50s and MIC90s of tedizolid (2 and 8μg/mL, respectively) were 2- to 16-fold lower than those of linezolid. There was no difference between the 3M. abscessus subspecies. Time-kill assays did not show any bactericidal activity at 4- and 8-fold the MIC...
November 10, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29207758/mycobacterium-fortuitum-infection-at-umbilical-hernioplasty-site
#20
Bharti Chogtu, Daliparty Vasudev Malik, Rahul Magazine, Vishnu Prasad Shenoy
Non Tuberculous Mycobacteria (NTM) are a group of rapidly growing mycobacteria and are generally considered to be of low virulence. Of late, there has been an increase in incidence of infections due to these organisms. Among them, Mycobacterium fortuitum, M. chelonae and M. abscessus are the common species which have been identified. Though they are occasionally implicated in pulmonary infections, NTM are very commonly associated with cutaneous infections, especially surgical site infections. Identification of NTM infection at such sites should be suspected when there is delayed healing of the wound...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
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