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Candida or invasive aspergillosis

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https://www.readbyqxmd.com/read/28223452/heterogeneity-confounds-establishment-of-a-model-microbial-strain
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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/28198513/sybr-safe-tm-efficiently-replaces-ethidium-bromide-in-aspergillus-fumigatus-gene-disruption
#7
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
#8
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
#9
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
#10
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
#11
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/28181136/prognostic-value-of-galactomannan-current-evidence-for-monitoring-response-to-antifungal-therapy-in-patients-with-invasive-aspergillosis
#12
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
#13
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/28176520/-pulmonary-co-infection-due-to-nocardia-cyriacigeorgica-and-aspergillus-fumigatus
#14
R Trastoy, T Manso, X García, G Barbeito, D Navarro, P Rascado, M L Pérez Del Molino
OBJECTIVE: Pulmonary nocardiosis is an uncommon pulmonary infection caused by aerobic gram-positive bacteria of the genus Nocardia. Nocardia sp. are environmental organisms spread worldwide. Approximately 50 Nocardia species have been described to date, about 30 of which are known to cause human disease. Nocardia cyriacigeorgica was first reported in 2001. CASE REPORT: We report a case of infection caused by N. cyriacigeorgica in a patient with B-cells non-Hodgkin lymphoma and diabetes mellitus...
February 8, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28174315/a-novel-phosphoregulatory-switch-controls-the-activity-and-function-of-the-major-catalytic-subunit-of-protein-kinase-a-in-aspergillus-fumigatus
#15
E Keats Shwab, Praveen R Juvvadi, Greg Waitt, Erik J Soderblom, M Arthur Moseley, Nathan I Nicely, Yohannes G Asfaw, William J Steinbach
: Invasive aspergillosis (IA), caused by the filamentous fungal pathogen Aspergillus fumigatus, is a major cause of death among immunocompromised patients. The cyclic AMP/protein kinase A (PKA) signaling pathway is essential for hyphal growth and virulence of A. fumigatus, but the mechanism of regulation of PKA remains largely unknown. Here, we discovered a novel mechanism for the regulation of PKA activity in A. fumigatus via phosphorylation of key residues within the major catalytic subunit, PkaC1...
February 7, 2017: MBio
https://www.readbyqxmd.com/read/28168221/global-population-genetic-analysis-of-aspergillus-fumigatus
#16
Eta Ebasi Ashu, Ferry Hagen, Anuradha Chowdhary, Jacques F Meis, Jianping Xu
Aspergillus fumigatus is a ubiquitous opportunistic fungal pathogen capable of causing invasive aspergillosis, a globally distributed disease with a mortality rate of up to 90% in high-risk populations. Effective control and prevention of this disease require a thorough understanding of its epidemiology. However, despite significant efforts, the global molecular epidemiology of A. fumigatus remains poorly understood. In this study, we analyzed 2,026 A. fumigatus isolates from 13 countries in four continents using nine highly polymorphic microsatellite markers...
January 2017: MSphere
https://www.readbyqxmd.com/read/28168067/necrotizing-liver-granuloma-abscess-and-constrictive-aspergillosis-pericarditis-with-central-nervous-system-involvement-different-remarkable-phenotypes-in-different-chronic-granulomatous-disease-genotypes
#17
Sanem Eren Akarcan, Neslihan Karaca, Guzide Aksu, Halil Bozkaya, Mehmet Fatih Ayik, Yasemin Ozdemir Sahan, Mehmet Arda Kilinc, Zafer Dokumcu, Cenk Eraslan, Emre Divarci, Hudaver Alper, Necil Kutukculer
Chronic granulomatous disease (CGD) is a primary immune deficiency causing predisposition to infections with specific microorganisms, Aspergillus species and Staphylococcus aureus being the most common ones. A 16-year-old boy with a mutation in CYBB gene coding gp91(phox) protein (X-linked disease) developed a liver abscess due to Staphylococcus aureus. In addition to medical therapy, surgical treatment was necessary for the management of the disease. A 30-month-old girl with an autosomal recessive form of chronic granulomatous disease (CYBA gene mutation affecting p22(phox) protein) had invasive aspergillosis causing pericarditis, pulmonary abscess, and central nervous system involvement...
2017: Case Reports in Immunology
https://www.readbyqxmd.com/read/28166077/a-rare-case-of-bilateral-aspergillomas-in-a-patient-of-ankylosing-spondylitis
#18
A Das, S Pandit, S K Das, S Basuthakur, S Das
Pulmonary involvement by Aspergillus sp. mainly includes allergic bronchopulmonary aspergillosis, aspergilloma, and invasive aspergillosis. Aspergilloma (Fungal ball) is the most common form of aspergillous pulmonary involvement, which occurs in preexisting pulmonary cavities, especially secondary to pulmonary tuberculosis. Ankylosing spondylitis is a rare cause of upper lobe fibro-cavitary lesions in pulmonary parenchyma. It may also lead to development of fungal balls in pulmonary cavities. Most common presentation is mild to massive hemoptysis; dyspnoea, chronic cough, expectoration may be other presentation; even the patient may remain asymptomatic...
April 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/28161745/serious-fungal-infections-in-canada
#19
S F Dufresne, D C Cole, D W Denning, D C Sheppard
There are currently no nationwide epidemiological data on fungal infections in Canada. We estimated the burden of serious fungal diseases using literature review and modeling, as per a methodology previously described by the LIFE program ( http://www.LIFE-worldwide.org ). Among the population of Canada (35.5 million in 2014), it was estimated that approximately 1.8% are affected by a serious fungal infection. Recurrent vulvovaginal candidiasis, severe asthma with fungal sensitization, and allergic bronchopulmonary aspergillosis are the most frequent infections, with population prevalences of 498,688 (1403/100,000), 73,344 (206/100,000), and 61,854 (174/100,000) cases, respectively...
February 4, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28161744/burden-of-serious-fungal-infections-in-bangladesh
#20
H C Gugnani, D W Denning, R Rahim, A Sadat, M Belal, M S Mahbub
In Bangladesh there are several published papers on superficial mycoses. Deep mycoses are also recognized as an important emerging problem. Here, we estimate the annual incidence and prevalence of serious fungal infections in Bangladesh. Demographic data were obtained from world population reports and the data on TB and HIV extracted from the online publications on tuberculosis in Bangladesh and Asia Pacific research statistical data information resources AIDS Data HUB. All the published papers on fungal infections in Bangladesh were identified through extensive search of literature...
February 4, 2017: European Journal of Clinical Microbiology & Infectious Diseases
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