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https://www.readbyqxmd.com/read/28231567/innate-lung-defense-during-invasive-aspergillosis-new-mechanisms
#1
Jaleesa M Garth, Chad Steele
Invasive aspergillosis (IA) is one of the most difficult to treat and, consequently, one of the most lethal fungal infections known to man. Continued use of immunosuppressive agents during chemotherapy and organ transplantation often leads to the development of neutropenia, the primary risk factor for IA. However, IA is also becoming more appreciated in chronic diseases associated with corticosteroid therapy. The innate immune response to Aspergillus fumigatus, the primary agent in IA, plays a pivotal role in the recognition and elimination of organisms from the pulmonary system...
February 24, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28229616/invasive-pulmonary-aspergillosis-in-an-immunocompromised-patient-with-severe-ulcerative-colitis
#2
David Marti Aguado, María Pilar Ballester, Marta Maia Bosca Watts
Inflammatory Bowel Disease patients at risk of opportunistic infections are those treated with immunomodulators. Toruner and colleagues found that corticosteroid use was more commonly associated with fungal infections. We present a case of invasive pulmonary Aspergillosis due to corticosteroid therapy in the context of a severe Ulcerative Colitis flare. We want to highlight the relationship between Aspergillus fumigatus and horses; and the use of leucocitapheresis combined with mesalazine as an effective treatment option in this patients who can not take more immunosuppressive therapy...
February 23, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28223452/heterogeneity-confounds-establishment-of-a-model-microbial-strain
#3
Nancy P Keller
Aspergillus fumigatus is a ubiquitous environmental mold and the leading cause of diverse human diseases ranging from allergenic bronchopulmonary aspergillosis (ABPA) to invasive pulmonary aspergillosis (IPA). Experimental investigations of the biology and virulence of this opportunistic pathogen have historically used a few type strains; however, it is increasingly observed with this fungus that heterogeneity among isolates potentially confounds the use of these reference isolates. Illustrating this point, Kowalski et al...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28220323/burden-of-fungal-infections-in-algeria
#4
M Chekiri-Talbi, D W Denning
We report for the first time in Algeria and provide burden estimates. We searched for existing data and estimated the incidence and prevalence of fungal diseases based on the population at risk and available epidemiological data. Demographic data were derived from the National Office of Statistics (Office National des Statistiques: ONS), World Health Organization (WHO), The Joint Nations Programme on HIV/AIDS (UNAIDS) and national published reports. When no data existed, risk populations were used to estimate frequencies of fungal infections, using previously described methodology...
February 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28220322/serious-fungal-infections-in-the-philippines
#5
M C R Batac, D Denning
The Philippines is a low middle-income, tropical country in Southeast Asia. Infectious diseases remain the main causes of morbidity, including tuberculosis. AIDS/HIV prevalence is still low at <1%, but is rapidly increasing. Fungal disease surveillance has not been done, and its burden has never been estimated. This becomes more important as the population of immunocompromised patients increases, drawn from patients with AIDS, TB, malignancies, and autoimmune diseases requiring chronic steroid use. Using the methodology of the LIFE program ( www...
February 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28218019/nucleic-acid-amplification-methodologies-for-the-detection-of-pulmonary-mold-infections
#6
Matthew William McCarthy, Ruta Petraitiene, Thomas J Walsh
The detection of pulmonary mold infections has historically required technically demanding methods obtained through invasive procedures. Nucleic acid amplification assays have the potential to circumvent the technical hurdles associated with diagnosis, but are not without potential pitfalls. Areas covered: In this paper, the authors review new assays for the diagnosis of pulmonary mold infections due to aspergillosis, mucormycosis, and hyalohyphomycoses as well as uncommon infections caused by dematiaceous molds...
March 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28213800/invasive-aspergillus-laryngotracheobronchitis-in-an-adult-with-primary-cns-lymphoma
#7
Mark E Barry, William Walsh Thomas, Buer Song, Natasha Mirza
Invasive aspergillosis can be difficult to diagnose, and early recognition and initiation of therapy is imperative for improving patient outcomes. A case of invasive Aspergillus laryngotracheobronchitis is presented here with a review of the relevant literature. A 58-year-old male undergoing treatment for CNS lymphoma presented with neutropenic sepsis and acute respiratory distress requiring intubation. Following extubation, he reported persistent hoarseness for 1-month duration and he was found to have pseudomembranous plaques and ulcers of the larynx, trachea, and right mainstem bronchus consistent with Aspergillus laryngotracheobronchitis...
February 17, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28213689/serious-fungal-infections-in-egypt
#8
S M Zaki, D W Denning
We aimed to estimate the burden of serious fungal infections in Egypt, currently unknown, based on the size of the populations at risk and available epidemiological data. Data were obtained from the World Health Organization (WHO), the Joint United Nations Programme on HIV/AIDS (UNAIDS), and published reports with clearcut denominators. When no data existed, risk populations were used to estimate frequencies of fungal infections, using previously described methodology. The population of Egypt in 2011 was ∼82,500,000; 31% children, and 8% women >60 years of age...
February 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28203225/regulation-of-sterol-biosynthesis-in-the-human-fungal-pathogen-aspergillus-fumigatus-opportunities-for-therapeutic-development
#9
REVIEW
Sourabh Dhingra, Robert A Cramer
Sterols are a major component of eukaryotic cell membranes. For human fungal infections caused by the filamentous fungus Aspergillus fumigatus, antifungal drugs that target sterol biosynthesis and/or function remain the standard of care. Yet, an understanding of A. fumigatus sterol biosynthesis regulatory mechanisms remains an under developed therapeutic target. The critical role of sterol biosynthesis regulation and its interactions with clinically relevant azole drugs is highlighted by the basic helix loop helix (bHLH) class of transcription factors known as Sterol Regulatory Element Binding Proteins (SREBPs)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28202251/high-incidence-of-non-tuberculous-mycobacteria-positive-cultures-among-adolescent-with-cystic-fibrosis
#10
Zoé Cavalli, Quitterie Reynaud, Romain Bricca, Raphaële Nove-Josserand, Stéphane Durupt, Philippe Reix, Marie Perceval, Michèle Pérouse de Montclos, Gérard Lina, Isabelle Durieu
BACKGROUND: We evaluated the prevalence of non-tuberculous mycobacteria (NTM)-positive cultures among our cystic fibrosis (CF) center patients, reviewed risk factors for NTM positivity, and determined its impact on lung function evolution. METHODS: From 2009 to 2014, CF adults and children attending the CF center of Lyon (France) and having at least one positive NTM isolate were included. Each case was matched by age and gender with two CF patients with no NTM isolate (controls)...
February 12, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28198513/sybr-safe-tm-efficiently-replaces-ethidium-bromide-in-aspergillus-fumigatus-gene-disruption
#11
H M S Canela, L A Takami, M E S Ferreira
Invasive aspergillosis is a disease responsible for high mortality rates, caused mainly by Aspergillus fumigatus. The available drugs are limited and this disease continues to occur at an unacceptable frequency. Gene disruption is essential in the search for new drug targets. An efficient protocol for A. fumigatus gene disruption was described but it requires ethidium bromide, a genotoxic agent, for DNA staining. Therefore, the present study tested SYBR safe(TM), a non-genotoxic DNA stain, in A. fumigatus gene disruption protocol...
February 8, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28194062/performance-of-galactomannan-antigen-beta-d-glucan-and-aspergillus-lateral-flow-device-for-the-diagnosis-of-invasive-aspergillosis
#12
Gökhan Metan, Muzaffer Keklik, Gökçen Dinç, Çiğdem Pala, Afra Yıldırım, Berkay Saraymen, Mustafa Yavuz Köker, Leylagül Kaynar, Bülent Eser, Mustafa Çetin
Aspergillus lateral-flow device (LFD) was recently introduced as a practical tool for the diagnosis of invasive aspergillosis (IA). We investigated the performance of Aspergillus-LFD as a point-of-care test for the diagnosis of IA. Serum samples were collected twice weekly from patients who received intensive chemotherapy for acute leukemia, or recepients of allogeneic stem cell transplantation. Aspergillus galactomannan (GM) antigen, 1,3-beta-d-glucan and Aspergillus-LFD tests were carried out according to manufacturers' recommendations...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28188493/serious-fungal-infections-in-chile
#13
E Alvarez Duarte, D W Denning
The incidence and prevalence of fungal infections in Chile are unknown. Here, we have estimated the burden of serious fungal diseases from data obtained from clinical reports, WHO reports, Chilean census, OECD reports and comprehensive literature search available on PubMed and SciELO, among other scientific resources. Due the lack of official data about fungal diseases, frequencies were calculated based on the specific populations at risk. Recurrent vulvovaginal candidiasis (>4 episodes/year) is estimated to occur in 3108/100,000...
February 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28188492/serious-fungal-infections-in-portugal
#14
R Sabino, C Verissímo, J Brandão, C Martins, D Alves, C Pais, D W Denning
There is a lack of knowledge on the epidemiology of fungal infections worldwide because there are no reporting obligations. The aim of this study was to estimate the burden of fungal disease in Portugal as part of a global fungal burden project. Most published epidemiology papers reporting fungal infection rates from Portugal were identified. Where no data existed, specific populations at risk and fungal infection frequencies in those populations were used in order to estimate national incidence or prevalence, depending on the condition...
February 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28188491/serious-fungal-infections-in-peru
#15
B Bustamante, D W Denning, P E Campos
Epidemiological data about mycotic diseases are limited in Peru and estimation of the fungal burden has not been previously attempted. Data were obtained from the Peruvian National Institute of Statistics and Informatics, UNAIDS and from the Ministry of Health's publications. We also searched the bibliography for Peruvian data on mycotic diseases, asthma, COPD, cancer and transplants. Incidence or prevalence for each fungal disease were estimated in specific populations at risk. The Peruvian population for 2015 was 31,151,543...
February 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28183359/unexpected-extrapyramidal-symptoms-and-pulmonary-aspergillosis-in-exertional-heatstroke-with-fulminant-liver-failure-a-case-report
#16
Jie Jiao, Feihu Zhou, Hongjun Kang, Chao Liu, Mengmeng Yang, Jie Hu
BACKGROUND: Exertional heatstroke is a life-threatening condition with high mortality because of the rapid progress of multiple organ dysfunction syndrome even if aggressive treatments are initiated rapidly. Mild to moderate hepatic injury is common in exertional heatstroke, while fulminant liver failure is rare. Extrapyramidal symptoms and pulmonary aspergillosis secondary to liver failure induced by exertional heatstroke have never been reported in prior cases. CASE PRESENTATION: A 25-year-old Han Chinese man presented with exertional heatstroke with fulminant liver failure, subsequent pulmonary aspergillosis, and extrapyramidal symptoms...
February 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28181136/prognostic-value-of-galactomannan-current-evidence-for-monitoring-response-to-antifungal-therapy-in-patients-with-invasive-aspergillosis
#17
REVIEW
Laura L Kovanda, Amit V Desai, William W Hope
Galactomannan (GM) is a polysaccharide present in the cell wall of Aspergillus spp. that is released during growth of the organism. It has been successfully used to aide in the diagnosis of invasive aspergillosis allowing for earlier recognition of disease compared to conventional methods. Since its implementation in the clinic as a diagnostic tool, GM has been used in experimental models to measure therapeutic response. Several clinical studies describe the prognostic value of GM. Herein, we review the evidence supporting the utilization of GM antigen as a biomarker to measure response to systemic antifungal therapy...
February 8, 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/28180049/invasive-aspergillosis-of-anterior-skull-base-in-the-immunocompetent-host-outcomes-with-a-combined-treatment-modality-an-institutional-experience
#18
Saurin R Shah, Amit Keshri, Simple Patadia, Rungmei S K Marak, Sanjay Behari
Objectives To study outcomes with voriconazole therapy in immunocompetent individuals following maximal safe endoscopic resection in invasive aspergillosis of the anterior skull base. Design Retrospective study of patients with chronic invasive aspergillosis including symptomatology, extent of disease, and response to voriconazole following maximal safe resection in immunocompetent individuals. Setting Tertiary care superspeciality referral center. Participants Ten consecutive patients of invasive aspergillosis of anterior skull base managed over a period of 2 years...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28179444/awareness-of-predictors-of-mortality-may-help-improve-outcome-in-chronic-pulmonary-aspergillosis
#19
EDITORIAL
Helmut J F Salzer, Oliver A Cornely
No abstract text is available yet for this article.
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28179437/predictors-of-mortality-in-chronic-pulmonary-aspergillosis
#20
David Lowes, Khaled Al-Shair, Pippa J Newton, Julie Morris, Chris Harris, Riina Rautemaa-Richardson, David W Denning
Chronic pulmonary aspergillosis (CPA) is a chronic progressive infection that destroys lung tissue in non-immunocompromised patients. Contemporary series suggest 50-85% 5-year mortality, with few prognostic factors identified.A cohort of 387 CPA patients referred to the UK's National Aspergillosis Centre from 1992 to June 2012 was studied until June 2015. The impact of objective and subjective variables including age, sex, previous pulmonary conditions, dyspnoea score, quality of life, serum albumin and C-reactive protein and radiological appearances were assessed using Kaplan-Meier curves, log rank tests and Cox proportional hazards modelling...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
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