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https://www.readbyqxmd.com/read/28643723/management-of-a-case-of-candida-albicans-endogenous-endophthalmitis-with-intravitreal-caspofungin
#1
Harshali Manish Yadav, Boben Thomas, Cherian Thampy, Tandava Krishnan Panaknti
We report a case of Candida albicans endogenous endophthalmitis treated with intravitreal caspofungin. The patient was a known case of acute lymphoblastic leukemia on chemotherapy and presented to us with features suggestive of endogenous endophthalmitis. He was treated initially with intravenous (IV) caspofungin and intravitreal amphotericin B. Patients condition worsened after IV caspofungin was replaced by amphotericin B necessitating a core vitrectomy. The patient was given the option of off-label caspofungin intravitreal injection for which the patient consented...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28634301/microbial-glycoside-hydrolases-as-antibiofilm-agents-with-cross-kingdom-activity
#2
Brendan D Snarr, Perrin Baker, Natalie C Bamford, Yukiko Sato, Hong Liu, Mélanie Lehoux, Fabrice N Gravelat, Hanna Ostapska, Shane R Baistrocchi, Robert P Cerone, Elan E Filler, Matthew R Parsek, Scott G Filler, P Lynne Howell, Donald C Sheppard
Galactosaminogalactan and Pel are cationic heteropolysaccharides produced by the opportunistic pathogens Aspergillus fumigatus and Pseudomonas aeruginosa, respectively. These exopolysaccharides both contain 1,4-linked N-acetyl-d-galactosamine and play an important role in biofilm formation by these organisms. Proteins containing glycoside hydrolase domains have recently been identified within the biosynthetic pathway of each exopolysaccharide. Recombinant hydrolase domains from these proteins (Sph3h from A...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28611248/the-aspergillus-fumigatus-crza-transcription-factor-activates-chitin-synthase-gene-expression-during-the-caspofungin-paradoxical-effect
#3
Laure Nicolas Annick Ries, Marina Campos Rocha, Patrícia Alves de Castro, Rafael Silva-Rocha, Roberto Nascimento Silva, Fernanda Zanolli Freitas, Leandro José de Assis, Maria Célia Bertolini, Iran Malavazi, Gustavo H Goldman
Aspergillus fumigatus is an opportunistic fungal pathogen that causes invasive aspergillosis (IA), a life-threatening disease in immunocompromised humans. The echinocandin caspofungin, adopted as a second-line therapy in combating IA, is a β-1,3-glucan synthase inhibitor, which, when used in high concentrations, reverts the anticipated A. fumigatus growth inhibition, a phenomenon called the "caspofungin paradoxical effect" (CPE). The CPE has been widely associated with increased chitin content in the cell wall due to a compensatory upregulation of chitin synthase-encoding genes...
June 13, 2017: MBio
https://www.readbyqxmd.com/read/28595275/antifungal-susceptibility-of-sporothrix-schenckii-complex-biofilms
#4
Raimunda Sâmia Nogueira Brilhante, Felipe Rodrigues Magalhães de Aguiar, Maria Lucilene Queiroz da Silva, Jonathas Sales de Oliveira, Zoilo Pires de Camargo, Anderson Messias Rodrigues, Vandbergue Santos Pereira, Rosana Serpa, Débora de Souza Collares Maia Castelo-Branco, Edmilson Emanuel Monteiro Correia, Waldemiro Aquino Pereira-Neto, Rossana de Aguiar Cordeiro, Marcos Fábio Gadelha Rocha, José Júlio Costa Sidrim
Sporotrichosis, caused by species of Sporothrix schenckii complex, is the most prevalent subcutaneous mycosis in many areas of Latin America. The aim of this study was to evaluate the ability of Sporothrix spp. to form biofilms in vitro and to characterize the growth kinetics, morphology, and antifungal susceptibility of biofilms against classical antifungals. We investigated the ability of strains to produce biofilms in vitro and determined the effects of exposure to amphotericin B, itraconazole, caspofungin, ketoconazole, voriconazole, and fluconazole at minimum inhibitory concentration (MIC) against planktonic form and at 10× MIC and 50× MIC on the biomass and metabolic activity of these biofilms...
June 8, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28575121/pharmacokinetics-of-caspofungin-acetate-to-guide-optimal-dosing-in-cats
#5
Jana Leshinsky, Andrew McLachlan, David J R Foster, Ross Norris, Vanessa R Barrs
Cats are the most common mammal to develop invasive fungal rhinosinusitis caused by cryptic species in Aspergillus section Fumigati that are resistant to azoles but susceptible to caspofungin. In this study nonlinear mixed-effects pharmacokinetic modeling and simulation was used to investigate caspofungin pharmacokinetics and explore dosing regimens in cats using caspofungin minimum effective concentrations (MECs). Plasma concentrations in healthy cats were determined using HPLC-MS/MS after administration of a single and seven consecutive daily intravenous doses of 1 mg/kg caspofungin...
2017: PloS One
https://www.readbyqxmd.com/read/28573191/invasive-candida-infections-in-liver-transplant-recipients-clinical-features-and-risk-factors-for-mortality
#6
Matteo Bassetti, Maddalena Peghin, Alessia Carnelutti, Elda Righi, Maria Merelli, Filippo Ansaldi, Cecilia Trucchi, Cristiano Alicino, Assunta Sartor, Joost Wauters, Katrien Lagrou, Carlo Tascini, Francesco Menichetti, Alessio Mesini, Francesco G De Rosa, Leonel Lagunes, Jordi Rello, Arnaldo L Colombo, Antonio Vena, Patricia Munoz, Mario Tumbarello, Gabriele Sganga, Ignacio Martin-Loeches, Claudio Viscoli
BACKGROUND: Invasive fungal infections remain a leading cause of morbidity and mortality among liver transplant recipients (LTRs). In this patient population, invasive Candida infections (ICIs) account for the large majority of cases. To date, only small studies and case-series analysing clinical presentation and risk factors for mortality in LTRs with ICIs are available. METHODS: We performed a retrospective multicenter multinational study in 10 centers in Europe and Brazil...
May 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28566368/caspofungin-increases-fungal-chitin-and-eosinophil-and-%C3%AE-%C3%AE-t-cell-dependent-pathology-in-invasive-aspergillosis
#7
Nansalmaa Amarsaikhan, Ethan M Sands, Anand Shah, Ali Abdolrasouli, Anna Reed, James E Slaven, Darius Armstrong-James, Steven P Templeton
The polysaccharide-rich fungal cell wall provides pathogen-specific targets for antifungal therapy and distinct molecular patterns that stimulate protective or detrimental host immunity. The echinocandin antifungal caspofungin inhibits synthesis of cell wall β-1,3-glucan and is used for prophylactic therapy in immune-suppressed individuals. However, breakthrough infections with fungal pathogen Aspergillus fumigatus are associated with caspofungin prophylaxis. In this study, we report in vitro and in vivo increases in fungal surface chitin in A...
May 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28562512/an-unusual-cause-of-fever-and-rash-in-a-child-with-severe-aplastic-anemia
#8
Elis Yuexian Lee, Wen Quan Derrick Lian, Prasad Iyer, Rajat Bhattacharyya
A 4-year-old girl with severe aplastic anemia and 2 previous failed T-depleted haploidentical peripheral blood stem cell transplants developed persistent neutropenic fever and multiple erythematous maculopapular rashes 2 days after her third T-replete haploidentical bone marrow transplant. Skin biopsy confirmed the diagnosis of Trichosporon asahii infection. She was on caspofungin prophylaxis which is not effective against Trichosporon. A high index of suspicion, prompt investigation, and appropriate treatment with voriconazole for 4 months was instrumental in controlling the infection and she remains well presently 9 months posttransplant with full donor chimerism and free from infection...
May 29, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28560131/fatal-invasive-aspergillosis-caused-by-aspergillus-niger-after-bilateral-lung-transplantation
#9
Enora Atchade, Sylvain Jean-Baptiste, Sandrine Houzé, Claire Chabut, Laurent Massias, Yves Castier, Olivier Brugière, Hervé Mal, Philippe Montravers
Aspergillus niger is usually considered to be a low virulence fungus, not commonly reported to cause invasive infections. Invasive pulmonary aspergillosis due to Aspergillus niger was diagnosed in a 43-year-old woman following bilateral lung transplantation. Intravenous voriconazole failed to control progression of the disease. Despite salvage therapy with a combination of voriconazole and caspofungin for 23 days, the patient developed massive hemoptysis leading to death. The authors report the clinical features and treatment of this case...
September 2017: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28559257/susceptibility-testing-of-the-echinocandins-against-candida-species-in-the-daily-routine-etest%C3%A2-versus-sensititre-yeastone%C3%A2-data-from-a-single-center-in-austria
#10
Maria Aigner, Thomas Erbeznik, Martin Gschwentner, Cornelia Lass-Flörl
Antifungal susceptibility testing of caspofungin, anidulafungin and micafungin against Candida species was performed to evaluate the role of ETest® and Sensititre YeastOne® for antifungal susceptibility testing for daily routine and to survey resistance. 104 Candida species isolates detected from blood cultures were investigated. Determining EUCAST broth microdilution as reference method essential agreement (EA), categorical agreement (CA), very major errors (VME), major (ME) and minor errors (MIN) were assessed reading MICs at 18, 24 and 48 hours...
May 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28555254/successful-antifungal-combination-therapy-and-surgical-approach-for-aspergillus-fumigatus-suppurative-thyroiditis-associated-with-thyrotoxicosis-and-review-of-published-reports
#11
S Nicolè, M Lanzafame, A Cazzadori, M Vincenzi, F Mangani, C Colato, G El Dalati, P Brazzarola, E Concia
In immunocompromised patients, Aspergillus infections are important causes of morbidity and mortality. We describe a patient with cryoglobulinemic vasculitis who developed disseminated invasive aspergillosis with thyrotoxicosis caused by Aspergillus fumigatus. The diagnosis was based upon radiological, microbiological and pathological findings. The patient was treated successfully with voriconazole and caspofungin treatment followed by total thyroidectomy. We provide an overview of published reports on Aspergillus thyroiditis with an emphasis on therapeutic approaches...
May 29, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28552410/lung-eosinophil-recruitment-in-response-to-aspergillus-fumigatus-is-correlated-with-fungal-cell-wall-composition-and-requires-%C3%AE-%C3%AE-t-cells
#12
Nansalmaa Amarsaikhan, Evan M O'Dea, Angar Tsoggerel, Steven P Templeton
The differential recognition of fungal cell wall polysaccharides that program innate and adaptive immunity to the human opportunistic fungal pathogen Aspergillus fumigatus has been a focus of considerable interest. In a mouse model of fungal conidia aspiration, decreased relative levels of cell wall core carbohydrates β-1,3-glucan to chitin in A. fumigatus isolates and mutant strains were correlated with increased airway eosinophil recruitment. In addition, an increase in fungal surface chitin exposure induced by the β-1,3-glucan synthesis-targeting drug caspofungin was associated with increased murine airway eosinophil recruitment after a single challenge of conidia...
May 25, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28545901/management-of-aspergillus-pleural-empyema-with-combined-systemic-and-intrapleural-antifungal-therapy-in-a-pediatric-patient-case-report
#13
Alanoud Almuhareb, Zakaria Habib
We present the case of an 8-year-old immunocompromised boy with invasive pulmonary aspergillosis, complicated with pleural empyema and disseminated to the bone and central nervous system (CNS). The patient was treated with combined systemic antifungal agents (voriconazole and caspofungin) and intrapleural instillation of liposomal amphotericin B, in addition to surgical intervention. The treatment was well tolerated and resulted in remarkable clinical and radiological pulmonary improvement.
May 22, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28527634/low-penetration-of-caspofungin-into-cerebrospinal-fluid-following-intravenous-administration-of-standard-doses
#14
Volker Strenger, Fedja Farowski, Carsten Müller, Nora Hofer, Hans Jürgen Dornbusch, Daniela Sperl, Herwig Lackner, Martin Benesch, Christian Urban
The kinetics of caspofungin (CAS) in cerebrospinal fluid (CSF) following intravenous (i.v.) administration has been studied exclusively in animal models. However, human data are missing so far. In this study, 13 CSF samples were obtained at different time points following i.v. infusion of CAS in ten paediatric haemato-/oncological patients (age range 1.0-14.2 years, median 8.6 years) without signs of central nervous system (CNS) infection (n = 10 samples) or with infectious meningitis (n = 3 samples). Serum samples were obtained concurrently...
May 17, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28526521/coexistence-of-aspergilloma-and-pulmonary-hydatid-cyst-in-an-immunocompetent-individual
#15
F Aala, H Badali, S Hashemi Fesharaki, M Boroumand, M Sotoudeh Anvari, H Davari, S Agha Kuchak Afshari, S Khodavaisy
Echinococcosis is a zoonotic disease caused by Echinococcus granulosus sensu lato. The liver and lungs are the most commonly sites of infections, but involvements of other organs were also observed. Recently, the coinfection of pulmonary hydatid cyst with aspergilloma has been reported in the literature. Herein, we report a successful treatment of coinfection of cystic echinoccosis with aspergilloma due to Aspergillus flavus in a 34-year-old female. In vitro antifungal susceptibility tests revealed that the MIC values for antifungals employed in this case were posaconazole (0...
May 16, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28513771/species-distribution-and-antifungal-susceptibility-patterns-of-candida-isolates-from-a-public-tertiary-teaching-hospital-in-the-eastern-cape-province-south-africa
#16
P Mnge, B I Okeleye, S D Vasaikar, T Apalata
Candida species are the leading cause of invasive fungal infections, and over the past decade there has been an increased isolation of drug resistant Candida species. This study aimed to identify the species distribution of Candida isolates and to determine their unique antifungal susceptibility and resistance patterns. During a cross-sectional study, 209 Candida isolates (recovered from 206 clinical samples) were collected and their species distribution was determined using ChromAgar Candida. The Vitek-2 system (Biomerieux, South Africa) was used to determine minimum inhibitory concentrations (MICs) to azoles (fluconazole, voriconazole), echinocandins (caspofungin, micafungin), polyenes (amphotericin B) and flucytosine...
May 15, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28507115/sensitivity-of-white-and-opaque-candida-albicans-to-antifungal-drugs
#17
Veronica B Craik, Alexander D Johnson, Matthew B Lohse
White and opaque cells of Candida albicans have the same genome but differ in gene expression patterns, metabolic profiles, and host niche preferences. We tested whether these differences (which include the differential expression of drug transporters) resulted in different sensitivities to 27 antifungal agents. The analysis was performed in two different strain backgrounds; although there was strain-to-strain variation, only terbinafine hydrochloride and caspofungin showed consistent, two-fold differences between white and opaque cells across both strains...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28506251/diversity-in-vitro-virulence-traits-and-antifungal-susceptibility-pattern-of-gastrointestinal-yeast-flora-of-healthy-poultry-gallus-gallus-domesticus
#18
Supram Hosuru Subramanya, Nawal Kishor Sharan, Bharat Prasad Baral, Deependra Hamal, Niranjan Nayak, Peralam Yegneswaran Prakash, Brijesh Sathian, Indira Bairy, Shishir Gokhale
BACKGROUND: Poultry farming and consumption of poultry (Gallus gallus domesticus) meat and eggs are common gastronomical practices worldwide. Till now, a detailed understanding about the gut colonisation of Gallus gallus domesticus by yeasts and their virulence properties and drug resistance patterns in available literature remain sparse. This study was undertaken to explore this prevalent issue. RESULTS: A total of 103 specimens of fresh droppings of broiler chickens (commercial G domesticus) and domesticated chickens (domesticated G domesticus) were collected from the breeding sites...
May 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28497621/endomyocardial-and-pericardial-aspergillosis-in-critically-ill-patients
#19
George Dimopoulos, Frantzeska Frantzeskaki, Marinos Kosmopoulos, Fabio Sylvio Taccone, Anne-Marie Van den Abeele, Pierre Bulpa, Frederic Forêt, Dirk Vogelaers, Stijn Blot
Invasive aspergillosis(IA) is a potentially lethal complication of Aspergillus infection affecting mainly immunocompromised hosts; however, during the last two decades its incidence was increasingly observed in critically ill immunocompetent patients. The objective of this study is to describe the clinical characteristics of histologically proven endomyocardial and pericardial invasion, in the context of IA, in critically ill patients. Eight critically ill patients with histopathological confirmation of endomyocardial/pericardial aspergillosis were evaluated...
May 12, 2017: Mycoses
https://www.readbyqxmd.com/read/28493896/candidemia-in-the-elderly-what-does-it-change
#20
Francesco Barchiesi, Elena Orsetti, Sara Mazzanti, Francesca Trave, Aldo Salvi, Cinzia Nitti, Esther Manso
BACKGROUND: Candidemia is a life-threatening fungal infection and it can affect patients of all ages. Characterization of candidemia in the elderly is lacking. METHODS: We performed a retrospective study of adults (≥ 18 years) with candidemia diagnosed in our center in 2010-2015. Demographics, comorbidities, clinical and microbiologic characteristics, antifungal treatment and outcome were compared between older (≤65 years) and younger (>65 years) patients...
2017: PloS One
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