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https://www.readbyqxmd.com/read/29755443/genomic-organization-and-expression-of-iron-metabolism-genes-in-the-emerging-pathogenic-mold-scedosporium-apiospermum
#1
Yohann Le Govic, Nicolas Papon, Solène Le Gal, Bénédicte Lelièvre, Jean-Philippe Bouchara, Patrick Vandeputte
The ubiquitous mold Scedosporium apiospermum is increasingly recognized as an emerging pathogen, especially among patients with underlying disorders such as immunodeficiency or cystic fibrosis (CF). Indeed, it ranks the second among the filamentous fungi colonizing the respiratory tract of CF patients. However, our knowledge about virulence factors of this fungus is still limited. The role of iron-uptake systems may be critical for establishment of Scedosporium infections, notably in the iron-rich environment of the CF lung...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29750016/spotlight-on-isavuconazole-in-the-treatment-of-invasive-aspergillosis-and-mucormycosis-design-development-and-place-in-therapy
#2
REVIEW
Jeffrey D Jenks, Helmut Jf Salzer, Juergen Prattes, Robert Krause, Dieter Buchheidt, Martin Hoenigl
In recent decades, important advances have been made in the diagnosis and treatment of invasive aspergillosis (IA) and mucormycosis. One of these advances has been the introduction of isavuconazole, a second-generation broad spectrum triazole with a favorable pharmacokinetic and safety profile and few drug-drug interactions. Phase III trials in patients with IA and mucormycosis demonstrated that isavuconazole has similar efficacy to voriconazole for the treatment of IA (SECURE trial) and liposomal amphotericin B for the treatment of mucormycosis (VITAL trial with subsequent case-control analysis) and a favorable safety profile with significantly fewer ocular, hepatobiliary, and skin and soft tissue adverse events compared to voriconazole...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29735424/direct-in-vitro-comparison-of-the-prodrug-isavuconazonium-sulfate-with-the-isavuconazole-active-compound-against-aspergillus-spp-and-2-rare-moulds
#3
Michael A Pfaller, Paul R Rhomberg, Mariana Castanheira
Isavuconazonium sulfate is a prodrug of isavuconazole, a broad-spectrum mould-active triazole antifungal drug. We provide a direct comparison of the in vitro activity of the prodrug versus the active metabolite against clinical isolates of Aspergillus spp., Sarocladium kiliense, and Scedosporium apiospermum using CLSI broth microdilution methods. The MIC values obtained for the prodrug were one 2-fold dilution higher than those of isavuconazole for all isolates tested. Using previously defined epidemiological cutoff values for isavuconazole and Aspergillus spp...
April 13, 2018: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29661466/endobronchial-topical-amphotericin-b-instillation-for-pulmonary-chromomycosis-after-lung-transplantation-a-case-report
#4
H Mitomo, A Sakurada, Y Matsuda, H Notsuda, T Watanabe, H Oishi, H Niikawa, S Maeda, M Noda, T Sado, T Amemiya, Y Yoshida, T Kikuchi, K Kamei, Y Okada
We report a very rare case of pulmonary chromomycosis caused by Scedosporium prolificans that developed after lung transplantation and was successfully treated with endobronchial topical amphotericin B instillation. The subject was a woman in her 50s with a history of bilateral lobar lung transplantation from living donors for idiopathic pulmonary hypertension. Eight years after the lung transplantation, chest radiography X-ray and computed tomography showed an abnormal shadow in the right lung. Bronchoscopic findings showed obstruction by a fungal component at the laterobasal bronchus B9...
April 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29582549/microglial-immune-response-is-impaired-against-the-neurotropic-fungus-lomentospora-prolificans
#5
Aize Pellon, Andoni Ramirez-Garcia, Xabier Guruceaga, Alazne Zabala, Idoia Buldain, Aitziber Antoran, Juan Anguita, Aitor Rementeria, Carlos Matute, Fernando L Hernando
Lomentospora (Scedosporium) prolificans is an opportunistic pathogen capable of causing invasive infections in immunocompromised patients. The fungus is able to disseminate via the bloodstream finally arriving at the central nervous system (CNS) producing neurological symptoms and in many cases, patient death. In this context, microglial cells, which are the resident immune cells in the CNS, may play an important role in these infections. However, this aspect of anti-L. prolificans immunity has been poorly researched to date...
March 26, 2018: Cellular Microbiology
https://www.readbyqxmd.com/read/29579888/severe-scedosporium-apiospermum-infection-in-a-recent-renal-transplant-recipient-case-report
#6
M J Torres-Sánchez, E Hernández-García, J Gómez-Sánchez, M Palomares-Bayo, M Peña-Ortega, P Galindo-Sacristán, C De Gracia-Guindo, A Osuna-Ortega
Infections in transplanted patients are still an important cause of morbidity and mortality. Among them, fungal infections with pathogens have become increasingly more prevalent in the last decade. We report the clinical course and management of disseminated Scedosporium apiospermum infection in a kidney transplant recipient, with microbiological isolation of the fungus in cerebrospinal fluid culture. S apiospermum is a fungus that is distributed worldwide and can be grown from soil samples or stagnant water...
March 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29567285/pseudallescheria-scedosporium-complex-species-from-saprobic-to-pathogenic-fungus
#7
REVIEW
N Luplertlop
Scedosporiosis is an emerging fungal infection caused by Pseudallescheria/Scedosporium complex species (PSC). This pathogen has been drawn significant interest in recent years due to its worldwide prevalence, the seriousness of its infection, associated with high mortality in both immunocompromised and immunocompetent hosts and its cryptic ecology, distribution and epidemiology across the globe. These species complexes can be found in environments impacted by human. The purpose of this review is to describe the characteristics, mode of transmission, ecology, prevalence, global epidemiology of this fungal group in order to increase the awareness of among clinicians and microbiologists, especially in regions with high endemic, as well as to promote further research on all of its aspects...
March 19, 2018: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29554296/the-diagnosis-and-management-of-respiratory-tract-fungal-infection-in-cystic-fibrosis-a-uk-survey-of-current-practice
#8
M Boyle, J E Moore, J L Whitehouse, D Bilton, D G Downey
Aspergillus fumigatus is commonly found in the airways of patients with cystic fibrosis (CF), and allergic bronchopulmonary aspergillosis (ABPA) is the most recognized associated clinical condition. However, accurate diagnosis remains challenging, and there is a paucity of clinical trials to guide clinical management of fungal disease. The aim of this survey was to assess the variability in current practice across the UK in diagnosis and management of fungal lung disease in CF patients. A 21 question anonymous online survey was sent to 94 paediatric and adult CF consultants in the UK...
March 15, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29538735/scedosporium-and-lomentospora-an-updated-overview-of-underrated-opportunists
#9
Andoni Ramirez-Garcia, Aize Pellon, Aitor Rementeria, Idoia Buldain, Eliana Barreto-Bergter, Rodrigo Rollin-Pinheiro, Jardel Vieira de Meirelles, Mariana Ingrid D S Xisto, Stephane Ranque, Vladimir Havlicek, Patrick Vandeputte, Yohann Le Govic, Jean-Philippe Bouchara, Sandrine Giraud, Sharon Chen, Johannes Rainer, Ana Alastruey-Izquierdo, Maria Teresa Martin-Gomez, Leyre M López-Soria, Javier Peman, Carsten Schwarz, Anne Bernhardt, Kathrin Tintelnot, Javier Capilla, Adela Martin-Vicente, Jose Cano-Lira, Markus Nagl, Michaela Lackner, Laszlo Irinyi, Wieland Meyer, Sybren de Hoog, Fernando L Hernando
Species of Scedosporium and Lomentospora are considered as emerging opportunists, affecting immunosuppressed and otherwise debilitated patients, although classically they are known from causing trauma-associated infections in healthy individuals. Clinical manifestations range from local infection to pulmonary colonization and severe invasive disease, in which mortality rates may be over 80%. These unacceptably high rates are due to the clinical status of patients, diagnostic difficulties, and to intrinsic antifungal resistance of these fungi...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29538733/developing-collaborative-works-for-faster-progress-on-fungal-respiratory-infections-in-cystic-fibrosis
#10
Carsten Schwarz, Patrick Vandeputte, Amandine Rougeron, Sandrine Giraud, Thomas Dugé de Bernonville, Ludovic Duvaux, Amandine Gastebois, Ana Alastruey-Izquierdo, Maria Teresa Martín-Gomez, Estrella Martin Mazuelos, Amparo Sole, Josep Cano, Javier Pemán, Guillermo Quindos, Françoise Botterel, Marie-Elisabeth Bougnoux, Sharon Chen, Laurence Delhaès, Loïc Favennec, Stéphane Ranque, Ludwig Sedlacek, Joerg Steinmann, Jose Vazquez, Craig Williams, Wieland Meyer, Solène Le Gal, Gilles Nevez, Maxime Fleury, Nicolas Papon, Françoise Symoens, Jean-Philippe Bouchara
Cystic fibrosis (CF) is the major genetic inherited disease in Caucasian populations. The respiratory tract of CF patients displays a sticky viscous mucus, which allows for the entrapment of airborne bacteria and fungal spores and provides a suitable environment for growth of microorganisms, including numerous yeast and filamentous fungal species. As a consequence, respiratory infections are the major cause of morbidity and mortality in this clinical context. Although bacteria remain the most common agents of these infections, fungal respiratory infections have emerged as an important cause of disease...
April 1, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29494271/molecular-identification-and-in-vitro-antifungal-susceptibility-of-scedosporium-complex-isolates-from-high-human-activity-sites-in-mexico
#11
Mariana Elizondo-Zertuche, Rogelio de J Treviño-Rangel, Efrén Robledo-Leal, Carolina E Luna-Rodríguez, Margarita L Martínez-Fierro, Iram P Rodríguez-Sánchez, Gloria M González
The genus Scedosporium is a complex of ubiquitous moulds associated with a wide spectrum of clinical entities, with high mortality principally in immunocompromised hosts. Ecology of these microorganisms has been studied performing isolations from environmental sources, showing a preference for human-impacted environments. This study aimed to evaluate the presence and antifungal susceptibility of Scedosporium complex species in soil samples collected in high-human-activity sites of Mexico. A total of 97 soil samples from 25 Mexican states were collected...
2017: Mycologia
https://www.readbyqxmd.com/read/29491040/impact-of-infection-status-and-cyclosporine-on-voriconazole-pharmacokinetics-in-an-experimental-model-of-cerebral-scedosporiosis
#12
Bénédicte Lelièvre, Marie Briet, Charlotte Godon, Pierre Legras, Jérémie Riou, Patrick Vandeputte, Bertrand Diquet, Jean-Philippe Bouchara
Cerebral Scedosporium infections usually occur in lung transplant recipients as well as in immunocompetent patients in the context of near drowning. Voriconazole is the first-line treatment. The diffusion of voriconazole through the blood-brain barrier in the context of cerebral infection and cyclosporine administration is crucial and remains a matter of debate. To address this issue, the pharmacokinetics of voriconazole was assessed in the plasma, cerebrospinal fluid (CSF), and brain in an experimental model of cerebral scedosporiosis in rats receiving or not receiving cyclosporine...
May 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29464281/varying-susceptibility-of-clinical-and-environmental-scedosporium-isolates-to-chemical-oxidative-stress-in-conidial-germination
#13
Cindy Staerck, Charlotte Godon, Jean-Philippe Bouchara, Maxime J J Fleury
Scedosporium species are opportunistic pathogens causing a great variety of infections in both immunocompetent and immunocompromised individuals. The Scedosporium genus ranks the second among the filamentous fungi colonizing the airways of patients with cystic fibrosis (CF), after Aspergillus fumigatus, and most species are capable to chronically colonize the respiratory tract of these patients. Nevertheless, few data are available regarding evasion of the inhaled conidia to the host immune response. Upon microbial infection, macrophages and neutrophils release reactive oxygen species (ROS)...
April 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29444330/increased-species-assignment-of-filamentous-fungi-using-maldi-tof-ms-coupled-with-a-simplified-sample-processing-and-an-in-house-library
#14
M E Zvezdanova, P Escribano, A Ruiz, M C Martínez-Jiménez, T Peláez, A Collazos, J Guinea, E Bouza, B Rodríguez-Sánchez
In this study we evaluated the capacity of MALDI-TOF MS (Bruker Daltonics, Bremen, Germany) to identify clinical mould isolates. We focused on two aspects of MALDI-TOF MS identification: the sample processing and the database. Direct smearing of the sample was compared with a simplified processing consisting of mechanical lysis of the moulds followed by a protein extraction step. Both methods were applied to all isolates and the Filamentous Fungi Library 1.0 (Bruker Daltonics) was used for their identification...
February 9, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29433463/scedosporium-apiospermum-infectious-scleritis-following-posterior-subtenon-triamcinolone-acetonide-injection-a-case-report-and-literature-review
#15
REVIEW
Daisuke Todokoro, Junki Hoshino, Ayaka Yo, Koichi Makimura, Junko Hirato, Hideo Akiyama
BACKGROUND: Ubiquitous fungi of the Scedosporium apiospermum species complex (SASC) cause various opportunistic infections. Posterior subtenon triamcinolone acetonide (STTA) injection is a standard therapy for intraocular inflammation and macular edema. We report a case of Scedosporium apiospermum infectious scleritis after a posterior STTA injection. CASE PRESENTATION: A 75-year-old man received a posterior STTA injection to treat macular edema in his left eye...
February 13, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29426208/tannery-mixed-liquors-from-an-ecotoxicological-and-mycological-point-of-view-risks-vs-potential-biodegradation-application
#16
Valeria Tigini, Federico Bevione, Valeria Prigione, Anna Poli, Lucrezia Ranieri, Francesco Spennati, Giulio Munz, Giovanna Cristina Varese
Fungi are known to be present in the activated sludge of wastewater treatment plants (WWTP). Their study should be at the base of an overall vision of the plant effectiveness and of effluents sanitary impact. Moreover, it could be fundamental for the implementation of successful bioaugmentation strategies aimed at the removal of recalcitrant or toxic compounds. This is one of the first studies on the cultivable autochthonous mycoflora present in the mixed liquors of two WWTP treating either vegetable or chromium tannery effluents...
June 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29370408/in-vitro-activity-of-the-novel-antifungal-compound-f901318-against-australian-scedosporium-and-lomentospora-fungi
#17
Chayanika Biswas, Derek Law, Michael Birch, Catriona Halliday, Tania C Sorrell, John Rex, Monica Slavin, Sharon C-A Chen
We determined the in vitro activity of the novel orotomide antifungal, F901318, against 30 Lomentospora prolificans, 20 Scedosporium apiospermum, 7 S. aurantiacum, and 3 S. boydii, isolates in comparison with standard antifungals. Against L. prolificans, F901318 was the most potent compound (MIC90 0.25 μg/ml); the geometric mean MIC (0.26 μg/ml) was significantly lower (23-80-fold) than those of itraconazole, voriconazole, posaconazole, and isavuconazole (all P < .001), and amphotericin B (P < .05)...
January 22, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29324504/aspergillus-and-other-respiratory-fungal-infections-in-the-icu-diagnosis-and-management
#18
José-Artur Paiva, Paulo Mergulhão, José Manuel Pereira
PURPOSE OF REVIEW: Filamentous fungi respiratory infections, namely because of Aspergillus, Mucorales, Fusarium, or Scedosporium, show rising incidence and occur more in populations which are not classically immunosuppressed. This and their persistent dismal prognosis are the focus of this review. RECENT FINDINGS: Both an early diagnosis, rooted on a high level of suspicion and based on clinical picture, radiology, cultural microbiological exams, fungal biomarkers, PCR and biopsy, and an early therapy, including immunorecovery, whenever possible, good antifungal selection, and surgery for source control, are paramount to maximize the outcome in these diseases...
April 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29323071/-scedosporium-apiospermum-an-emerging-pathogen-in-india-case-series-and-review-of-literature
#19
Dabet Rynga, Malini R Capoor, Swati Varshney, Mayuresh Naik, V Gupta
Scedosporium apiospermum is a rare cause of infection but is increasingly being reported among immunocompromised individuals around the world. We report two cases of S. apiospermum, one of keratitis and the other of nasal polyp both from immunocompetent patients. The two cases were successfully treated with voriconazole. It is important to diagnose such infections as their antifungal susceptibility to amphotericin B is variable.
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29283143/ocular-infections-caused-by-scedosporium-apiospermum-a-case-series
#20
Seema Ramakrishnan, Kunal Mandlik, Tejashree Sanket Sathe, Joseph Gubert, Thiruvengada Krishnan, Prabu Baskaran
The aim of our retrospective study is to report a case series of ocular infections caused by a rare fungus, Scedosporium apiospermum, in a South Indian population. Thirteen cases of culture-positive S. apiospermum infections diagnosed between January 2011 and March 2016 were included in this study. The parameters evaluated were predisposing factors, treatment and final clinical outcome. The most common mode of presentation was keratitis (84.6%) followed by sclerokeratitis (15.3%). The predisposing factors involved were unspecified foreign body injury (30...
January 2018: Indian Journal of Ophthalmology
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