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Nontuberculous mycobacterium infection

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https://www.readbyqxmd.com/read/29125666/tenosynovitis-caused-by-mycobacterium-malmoense-in-two-kidney-transplant-recipients-and-review-of-the-literature
#1
Rebecca van Grootveld, Hans U Scherer, Elke E M Peters, André Gaasbeek, Sandra M Arend, Herman F Wunderink
We report two unrelated cases of tenosynovitis caused by Mycobacterium malmoense in kidney transplant recipients. Both patients received immunosuppression and were referred to our tertiary hospital because of persisting complaints lasting >6 months not responding to corticosteroids or surgery. The mycobacterial cultures were positive for the slow-growing M. malmoense after several weeks of incubation. The patient in Case 1 was treated with a combination of surgical debridement and antibiotics, whereas the patient in Case 2 was only treated surgically...
November 10, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29111994/identification-of-the-infection-source-of-an-outbreak-of-mycobacterium-chelonae-keratitis-after-laser-in-situ-keratomileusis
#2
Heloisa Nascimento, Cristina Viana-Niero, Christiane Lourenço Nogueira, Paulo José Martins Bispo, Fernando Pinto, Camila de Paula Pereira Uzam, Cristianne Kayoko Matsumoto, Antônia Maria Oliveira Machado, Sylvia Cardoso Leão, Ana Luisa Höfling-Lima, Denise de Freitas
PURPOSE: Nontuberculous mycobacteria keratitis is a rare but challenging complication of laser in situ keratomileusis (LASIK). This study was conducted to determine the source(s) of infection in a cluster of cases of keratitis after LASIK and to describe this outbreak and patients' outcomes. METHODS: In this retrospective, case series, single-center study, 86 patients were included who underwent LASIK or photorefractive keratectomy between December 2011 and February 2012...
November 2, 2017: Cornea
https://www.readbyqxmd.com/read/29062643/mycobacterium-avium-infection-after-acupoint-embedding-therapy
#3
Jiao Zhang, Linying Lai, Liming Liang, Xinyue Bai, Minliang Chen
Nontuberculous mycobacterium is a ubiquitous environmental organism that is unusual to cause a true infection, but it can cause severe cutaneous infections. In this case report, we present a successful treatment for a Chinese patient with Mycobacterium avium cutaneous infection after acupoint embedding therapy. We managed to conduct pathogenic detection, drug sensitive test, and multidisciplinary consultation. Finally, a systematic treatment strategy of nontuberculous mycobacterium was performed. Twenty-two-month follow-up revealed excellent outcome without any recurrence...
September 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29040079/identification-of-nontuberculous-mycobacteria-isolated-from-hospital-water-by-sequence-analysis-of-the-hsp65-and-16s-rrna-genes
#4
Mehdi Roshdi Maleki, Hossein Samadi Kafil, Naser Harzandi, Seyyed Reza Moaddab
Nontuberculous mycobacteria (NTM) have emerged as an important cause of opportunistic nosocomial infections. NTM has frequently been isolated from hospital water distribution systems. The aim of this study was to survey the risk of NTM infections and determine the prevalence of NTM species in the hospital water distribution systems in Tabriz, Iran. One hundred and twenty samples of water from different sources of Tabriz hospitals were collected. The samples were filtered through 0.45-µm pore size membranes and decontaminated with 0...
October 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/29033435/clinical-features-of-nontuberculous-mycobacterial-pleurisy-a-review-of-12-cases
#5
Maiko Naito, Toshiya Maekura, Yu Kurahara, Masahiro Tahara, Naoya Ikegami, Yohei Kimura, Shoko Sonobe, Takehiko Kobayashi, Shojiro Minomo, Taisuke Tsuji, Kazunari Tsuyuguchi, Seiji Hayashi, Katsuhiro Suzuki
Objective The incidence of pulmonary nontuberculous mycobacterial (NTM) infections has increased in recent decades. Nevertheless, NTM pleurisy is still a rare disease. The objective of the present study was to elucidate the clinical features and outcomes of NTM pleurisy. Methods A retrospective study was undertaken of consecutive patients whose pleural effusion culture yielded NTM, from 2002 to 2016 at a respiratory hospital in Japan. The clinical features, treatment, and outcomes of these patients were analyzed...
October 16, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29032284/mycobacterium-longobardum-infection-in%C3%A2-the%C3%A2-hand
#6
Nikola Lekic, Andrew E Rosenberg, Morad Askari
Mycobacterium longobardum is a slow-growing, nontuberculous mycobacterium that was first characterized in 2012. We report a case of M. longobardum infection in the right middle finger of a diabetic man. He underwent surgery for a presumed diagnosis of an epidermal inclusion cyst. Molecular diagnosis of the surgical specimens demonstrated M. longobardum through RNA polymerase β-subunit encoding gene sequencing. After surgery, the patient was treated with antibiotics and eventually cured of the infection. To the best of our knowledge, this is only the second reported case of a pathogenic M...
October 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28988958/mycobacterium-abscessus-and-massiliense-lung-infection-during-macrolide-treatment-for-bronchiolitis-obliterans-after-allogeneic-hematopoietic-stem-cell-transplantation
#7
Noriko Miyake, Yong Chong, Ruriko Nishida, Katsuto Takenaka, Koji Kato, Toshihiro Miyamoto, Akio Aono, Akiko Takaki, Satoshi Mitarai, Shinji Shimoda, Nobuyuki Shimono, Koichi Akashi
In patients undergoing allogeneic hematopoietic stem cell transplantation (allo-SCT), post-transplant lung infection is critical for their prognosis. Mycobacterium abscessus complex is not fully recognized as a nontuberculous mycobacteria (NTM) pathogen of post-SCT lung infection. Here, we present three post-allogeneic SCT patients who developed pulmonary infection caused by M. abscessus complex including M. abscessus and M. massiliense. In all three cases, macrolide antibiotics had been administered for bronchiolitis obliterans syndrome (BOS) before the confirmation of their infection, and macrolide resistance was noted in the M...
October 5, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28953638/anti-interferon-%C3%AE-autoantibody-associated-disseminated-mycobacterium-abscessus-infection-mimicking-parotid-cancer-with-multiple-metastases-a-case-report
#8
Po-Hsiung Chang, Yu-Chung Chuang
RATIONALE: Among the nontuberculous mycobacteria, Mycobacterium abscessus is a common cause of skin, soft tissue, and bone infections. However, disseminated M. abscessus infection that mimics cancer metastasis with an underlying relatively immunocompetent condition has rarely been reported. PATIENT CONCERNS: A nonsmoking 73-year-old man with an underlying relatively immunocompetent condition reported a 2-month history of a mass in the region of his right parotid gland that had been steadily increasing in size...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28932687/multifocal-ulceronecrotic-skin-lesions-a-stigmatizing-case
#9
Fanny-Emmanuelle Bernier, Simon Grandjean Lapierre, Arwa El-Housseini, Mélissa Nantel-Battista, Sapha Barkati
Mycobacterium chelonae is a rapidly growing nontuberculous mycobacteria, ubiquitous in the environment and mostly involved in skin, soft tissue and bone infections. An atypical, severe and multifocal dermatological manifestation of Mycobacterium chelonae infection in an immunocompetent patient is described here. The lesions completely resolved using a multidisciplinary approach. This case emphasizes the important aspects of diagnosis, antimicrobial and surgical management.
2017: IDCases
https://www.readbyqxmd.com/read/28930014/surveillance-of-extrapulmonary-nontuberculous-mycobacteria-infections-oregon-usa-2007-2012
#10
Emily Henkle, Katrina Hedberg, Sean D Schafer, Kevin L Winthrop
Limited data are available describing extrapulmonary nontuberculous mycobacteria (NTM) infections in the general population. We describe results from statewide population-based laboratory surveillance in Oregon, USA, during 2007-2012. We defined a case of extrapulmonary NTM infection as >1 isolate from skin/soft tissue, disseminated sites, lymph node, joint, or other sites. The annual incidence of extrapulmonary NTM infection (other than Mycobacterium gordonae) was stable, averaging 1.5 cases/100,000 population...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28923675/respiratory-infections-due-to-nontuberculous-mycobacterias
#11
REVIEW
Luis Máiz Carro, Esther Barbero Herranz, Rosa Nieto Royo
The most common infections caused by nontuberculous mycobacteria (NTM) are lung infections. The microorganisms causing these infections most frequently are Mycobacterium avium complex, Mycobacterium kansasii and Mycobacterium abscessus complex. Their incidence has increased in the last three decades. After identifying an NTM in the respiratory tract, clinical and radiological aspects must be considered to determine if isolations are clinically relevant. Predisposing conditions that could contribute to infection must also be investigated...
September 15, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28915071/transcriptional-response-of-respiratory-epithelium-to-nontuberculous-mycobacteria
#12
Masashi Matsuyama, Andrew J Martins, Shamira Shallom, Olena Kamenyeva, Anuj Kashyap, Elizabeth P Sampaio, Juraj Kabat, Kenneth N Olivier, Adrian M Zelazny, John S Tsang, Steven M Holland
RATIONALE: The incidence of pulmonary nontuberculous mycobacterial (PNTM) disease is increasing, but host responses in respiratory epithelium infected with NTM are not fully understood. OBJECTIVE: We aimed to identify infection-relevant gene expression signatures of NTM infection of the respiratory epithelium. METHODS: We infected air-liquid interface (ALI) primary respiratory epithelial cell cultures with Mycobacterium avium subsp. avium (MAC) or Mycobacterium abscessuss subsp...
September 15, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28902922/molecular-clustering-of-patients-with-diabetes-and-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#13
REVIEW
Francles Blanco-Guillot, Guadalupe Delgado-Sánchez, Norma Mongua-Rodríguez, Pablo Cruz-Hervert, Leticia Ferreyra-Reyes, Elizabeth Ferreira-Guerrero, Mercedes Yanes-Lane, Rogelio Montero-Campos, Miriam Bobadilla-Del-Valle, Pedro Torres-González, Alfredo Ponce-de-León, José Sifuentes-Osornio, Lourdes Garcia-Garcia
INTRODUCTION: Many studies have explored the relationship between diabetes mellitus (DM) and tuberculosis (TB) demonstrating increased risk of TB among patients with DM and poor prognosis of patients suffering from the association of DM/TB. Owing to a paucity of studies addressing this question, it remains unclear whether patients with DM and TB are more likely than TB patients without DM to be grouped into molecular clusters defined according to the genotype of the infecting Mycobacterium tuberculosis bacillus...
2017: PloS One
https://www.readbyqxmd.com/read/28861054/screening-of-tb-actives-for-activity-against-nontuberculous-mycobacteria-delivers-high-hit-rates
#14
Jian Liang Low, Mu-Lu Wu, Dinah Binte Aziz, Benoît Laleu, Thomas Dick
The prevalence of lung disease due to infections with nontuberculous mycobacteria (NTM) has been increasing and surpassed tuberculosis (TB) in some countries. Treatment outcomes are often unsatisfactory, highlighting an urgent need for new anti-NTM medications. Although NTM in general do not respond well to TB specific drugs, the similarities between NTM and Mycobacterium tuberculosis at the molecular and cell structural level suggest that compound libraries active against TB could be leveraged for NTM drug discovery...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28858970/lung-transplantation-in-cystic-fibrosis-patients-with-difficult-to-treat-lung-infections
#15
Lieven Dupont
PURPOSE OF REVIEW: In cystic fibrosis (CF) patients with end-stage pulmonary disease, lung transplantation (LTx) remains a life-extending therapy with good outcome in most patients. Despite early concern about chronic pretransplantation infections in the context of posttransplantation immunosuppression, typical CF-associated organisms such as Pseudomonas aeruginosa turned out to be quite well manageable and associated with favorable outcomes in transplanted CF patients, even in patients with highly resistant strains...
November 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28838729/healthcare-associated-mycobacterium-chimaera-infection-subsequent-to-heater-cooler-device-exposure-during-cardiac-surgery
#16
REVIEW
Allen Ninh, Menachem Weiner, Andrew Goldberg
A SERIES of reports in the United States and Europe have linked Mycobacterium chimaera infections to contaminated heater-cooler devices used during cardiac surgery. Heater-cooler devices commonly are used for cardiopulmonary bypass during cardiac surgery. M. chimaera is a slow-growing nontuberculous mycobacterium that has been shown to cause cardiac complications that can lead to fatal disease following cardiac surgery. Given that more than 250,000 cardiothoracic surgical procedures requiring cardiopulmonary bypass take place each year in the United States, the estimated number of patient exposures to M...
October 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28837151/mycobacterium-abscessus-glycopeptidolipids-inhibit-macrophage-apoptosis-and-bacterial-spreading-by-targeting-mitochondrial-cyclophilin-d
#17
Jake Whang, Yong Woo Back, Kang-In Lee, Nagatoshi Fujiwara, Seungwha Paik, Chul Hee Choi, Jeong-Kyu Park, Hwa-Jung Kim
Mycobacterium abscessus (MAB) is a species of nontuberculous mycobacteria (NTM) and a major causative pathogen of pulmonary diseases especially in patients with cystic fibrosis. MAB infection is notoriously difficult to treat because of its intrinsic or inducible resistance to most antibiotics. The rough (R) morphotype of MAB, lacking cell surface glycopeptidolipids (GPLs), is associated with more severe and persistent infection than the smooth (S) type; however, the mechanisms underlying the R type's virulence and the relation with GPLs remain unclear...
August 24, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28827842/persimmon-derived-tannin-has-bacteriostatic-and-anti-inflammatory-activity-in-a-murine-model-of-mycobacterium-avium-complex-mac-disease
#18
Yoko Matsumura, Masahiro Kitabatake, Noriko Ouji-Sageshima, Satsuki Yasui, Naoko Mochida, Ryuichi Nakano, Kei Kasahara, Koichi Tomoda, Hisakazu Yano, Shin-Ichi Kayano, Toshihiro Ito
Nontuberculous mycobacteria (NTM), including Mycobacterium avium complex (MAC), cause opportunistic chronic pulmonary infections. Notably, MAC susceptibility is regulated by various factors, including the host immune system. Persimmon (Ebenaceae Diospyros kaki Thunb.) tannin is a condensed tannin composed of a polymer of catechin groups. It is well known that condensed tannins have high antioxidant activity and bacteriostatic properties. However, it is hypothesized that condensed tannins might need to be digested and/or fermented into smaller molecules in vivo prior to being absorbed into the body to perform beneficial functions...
2017: PloS One
https://www.readbyqxmd.com/read/28821331/nontuberculous-mycobacterium-infections-associated-with-heater-cooler-devices
#19
Keith B Allen, David D Yuh, Suzanne B Schwartz, Richard A Lange, Richard Hopkins, Kelly Bauer, Julia A Marders, Jose Delgado Donayre, Nicole Milligan, Catherine Wentz
BACKGROUND: Disseminated nontuberculous mycobacterium infections have occurred following surgical procedures involving extracorporeal circulation; contaminated water from heater-cooler devices (HCDs) has been implicated as the source. The purpose of this review was to evaluate the public health concern and to educate physicians who care for this patient population. METHODS: The Food and Drug Administration Medical Device Reporting (MDR) database was queried for reports received between January 2010 and August 2016 for patient infections and device contaminations associated with the use of HCDs...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28795380/peritoneal-dialysis-associated-catheter-infection-caused-by-mycobacterium-abscessus-in-an-elderly-patient-who-was-successfully-treated-with-catheter-removal
#20
Arata Hibi, Takahisa Kasugai, Keisuke Kamiya, Keisuke Kamiya, Chiharu Ito, Satoru Kominato, Ken Mizuguchi, Toshiyuki Miura, Katsushi Koyama
An 89-year-old Japanese man on peritoneal dialysis (PD) was suspected of having a PD-associated catheter infection. He visited the hospital because of the discharge of pus from the exit site of his catheter. Gram staining of the pus showed Gram-positive bacilli, but these were acid-fast bacilli. The rapidly growing nontuberculous mycobacteria, Mycobacterium abscessus, was isolated. PD catheter removal and debridement were immediately performed. The patient received combination antibiotic therapy. His clinical course was good, but he required hemodialysis due to the discontinuation of PD...
November 2017: CEN Case Reports
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