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https://www.readbyqxmd.com/read/28437176/echinocandins-in-ocular-therapeutics
#1
Akash Patil, Soumyajit Majumdar
Fungal infections of the eye, especially fungal keratitis and endophthalmitis, are major causes of concern and if left untreated could lead to vision loss. Currently, natamycin (polyene antifungal) is the only commercially available topical agent used for the treatment of ocular fungal infections. The other antifungals, belonging to the polyene and azole classes, are used off-label in treating ocular infections and are administered topically, orally, intraocularly, or systemically. Even though their use through the different routes of administration has shown favorable outcomes, challenges such as poor ocular penetration, low bioavailability, ocular toxicity, and systemic side effects limit their utility...
February 24, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28434558/resistance-profiles-and-risk-factors-of-resistant-microorganisms-in-bacteraemia-of-abdominal-origin
#2
J Martín Jaramago, R Armero Ibáñez, J J Camarena Miñana, M Morales Suárez-Varela
OBJECTIVE: The presence of resistant microorganisms is a major cause of failure in initial empirical antimicrobial therapy. The objectives of this study are to determine the resistance profile of microorganisms that cause bacteraemia of abdominal origin and to identify whether the previous use of antibiotics and the place of acquisition of bacteraemia are risk factors associated with the presence of resistant organisms. MATERIAL AND METHODS: A clinical, observational, epidemiological, retrospective cohort study was conducted with all the adult patients admitted to a university hospital from 2011-2013...
April 20, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28431933/caspofungin-versus-micafungin-in-the-incidence-of-hepatotoxicity-in%C3%A2-patients-with-normal-to-moderate-liver-failure
#3
Yuichi Shibata, Mao Hagihara, Hideo Kato, Noriyo Kawasumi, Jun Hirai, Naoya Nishiyama, Nobuhiro Asai, Yusuke Koizumi, Yuka Yamagishi, Katsuhiko Matsuura, Hiroshige Mikamo
BACKGROUND: One of the major adverse events of caspofungin and micafungin is hepatotoxicity, however, there are few reports compared the incidence of hepatotoxicity between caspofungin and micafungin. Herein, the primary objective of this study was to compare the incidence of hepatotoxicity between caspofungin and micafungin treatments for patients with fungal or suspected fungal infection. METHODS: In total, 201 patients [caspofungin group: 66 patients; micafungin group: 135 patients] treated with echinocandins from April 2014 to November 2015 at Aichi Medical University Hospital...
April 18, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28429246/comparison-of-efficacy-and-safety-of-caspofungin-versus-micafungin-in-pediatric-allogeneic-stem-cell-transplant-recipients-a-retrospective-analysis
#4
Natalia Maximova, Giulia Schillani, Roberto Simeone, Alessandra Maestro, Davide Zanon
INTRODUCTION: The high morbidity and mortality associated with invasive fungal infections (IFIs) provide the rationale for antifungal prophylaxis in immuno-compromised pediatric patients undergoing hematopoietic stem cell transplantation (HSCT). Caspofungin and micafungin are antifungal agents of interest for prophylaxis of IFIs because of their potency against Candida and minimal toxicity or interactions with other drugs. Few studies have demonstrated the safety and efficacy of such echinocandins as prophylaxis for IFIs in patients undergoing HSCT...
April 20, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28425571/clinical-factors-affecting-costs-in-patients-receiving-systemic-antifungal-therapy-in-intensive-care-units-in-greece-results-from-the-estimator-study
#5
A Armaganidis, S Nanas, E Antoniadou, K Mandragos, K Liakou, A Koutsoukou, G Baltopoulos, G Nakos, A Kounougeri, K Ganas, A Prekates, M Kompoti, D Georgopoulos, I Pneumatikos, E Zakynthinos
Invasive fungal infections are common in intensive care units (ICUs) but there is a great variability in factors affecting costs of different antifungal treatment strategies in clinical practice. To determine factors affecting treatment cost in adult ICU patients with or without documented invasive fungal infection receiving systemic antifungal therapy (SAT) we have performed a prospective, multicentre, observational study enrolling patients receiving SAT in participating ICUs in Greece. During the study period, 155 patients received SAT at 14 participating ICUs: 37 (23...
April 20, 2017: Mycoses
https://www.readbyqxmd.com/read/28412040/ros-formation-is-a-differential-contributory-factor-to-the-fungicidal-action-of-amphotericin-b-and-micafungin-in-candida-albicans
#6
José P Guirao-Abad, Ruth Sánchez-Fresneda, Begoña Alburquerque, José A Hernández, Juan-Carlos Argüelles
The hypothetical role played by the intracellular formation of reactive oxygen species (ROS) in the fungicidal action carried out by Amphotericin B (AmB) and Micafungin (MF) was examined in Candida albicans, which remains the most prevalent fungal pathogen. The clinical MICs for MF and AmB were 0.016 and 0.12μg/ml, respectively. Whereas AmB (0.5-1.0×MIC) induced a marked production of intracellular ROS accompanied by a high degree of cell killing in the C. albicans SC5314 strain, the fungicidal effect of MF was still operative, but ROS generation was slight...
April 4, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28400291/unmet-clinical-needs-in-the-treatment-of-systemic-fungal-infections-the-role-of-amphotericin-b-and-drug-targeting
#7
Raquel Fernández-García, Esther de Pablo, María Paloma Ballesteros, Dolores R Serrano
Recently an increase in both the prevalence and incidence of invasive fungal infections have been reported. The number of fungal species that can cause systemic mycoses are higher and current antifungal therapies are still far from ideal. The emergence of antifungal resistances has a major clinical impact when using azoles and echinocandins leading to possible treatment failure and ultimately putting the patient's life at risk. Amphotericin B can play a key role in treating severe invasive mycoses as the incidence of antifungal resistance is very low combined with a high efficacy against a wide range of fungi...
April 8, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28394977/-clinical-and-epidemiological-changes-of-candidemia-among-adult-patients-from-2000-to-2013
#8
Leonardo Siri, Paulette Legarraga, Patricia García, Tamara González, Ricardo Rabagliati
BACKGROUND: Invasive Candida spp. infections have been described more frequently. AIM: To characterize the epidemiological data of candidemia in recent years. METHODS: A retrospective study of adult patients in a University Hospital in Santiago, Chile, with 1 or more documented episodes of candidemia, from January 2000 to December 2013. RESULTS: One hundred and twenty episodes of candidemia were identified in 120 patients, annual incidence of 0...
February 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28381607/antifungal-susceptibility-testing-of-malassezia-spp-with-an-optimized-colorimetric-broth-microdilution-method
#9
Cheryl Leong, Antonino Buttafuoco, Martin Glatz, Philipp P Bosshard
Malassezia is a genus of lipid dependent yeasts. It is associated with common skin diseases such as pityriasis versicolor or atopic dermatitis and can cause systemic infections in immunocompromised individuals. Owing to slow growth and lipid requirements of these fastidious yeasts, convenient and reliable antifungal drug susceptibility testing assays for Malassezia spp. are not widely available. We have therefore optimized a broth microdilution assay for the testing of Malassezia that is based on the assays from CLSI and EUCAST for Candida and other yeasts...
April 5, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28366609/no-evidence-of-increased-ocular-involvement-in-candidemic-patients-initially-treated-with-echinocandins
#10
P Muñoz, A Vena, B Padilla, M Valerio, M I Sanchez, M Puig-Asensio, J Fortún, M Fernández-Ruiz, P Merino, J E Losa, A Loza, R A Rivas, E Bouza
Candins are commonly used as initial therapy in patients with candidemia and are known to diffuse poorly into ocular tissue. The aim of our multicenter study was to assess whether eye involvement was more common in patients initially treated with echinocandins. We performed a post hoc analysis of a prospective, multicenter, population-based candidemic surveillance program implemented in Spain during 2010-2011 (CANDIPOP project). Eye involvement was detected in 13 of 168 patients with candidemia (7.7%) who underwent ophthalmoscopy...
February 27, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28364558/changing-epidemiology-of-candidaemia-in-australia
#11
Belinda Chapman, Monica Slavin, Debbie Marriott, Catriona Halliday, Sarah Kidd, Ian Arthur, Narin Bak, Christopher H Heath, Karina Kennedy, C Orla Morrissey, Tania C Sorrell, Sebastian van Hal, Caitlin Keighley, Emma Goeman, Neil Underwood, Krispin Hajkowicz, Ann Hofmeyr, Michael Leung, Nenad Macesic, Jeannie Botes, Christopher Blyth, Louise Cooley, C Robert George, Pankaja Kalukottege, Alison Kesson, Brendan McMullan, Robert Baird, Jennifer Robson, Tony M Korman, Stella Pendle, Kerry Weeks, Eunice Liu, Elaine Cheong, Sharon Chen
Objectives: Knowledge of contemporary epidemiology of candidaemia is essential. We aimed to identify changes since 2004 in incidence, species epidemiology and antifungal susceptibilities of Candida spp. causing candidaemia in Australia. Methods: These data were collected from nationwide active laboratory-based surveillance for candidaemia over 1 year (within 2014-2015). Isolate identification was by MALDI-TOF MS supplemented by DNA sequencing. Antifungal susceptibility testing was performed using Sensititre YeastOne™...
April 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28361459/distribution-and-antifungal-susceptibility-of-yeasts-isolates-from-intensive-care-unit-patients
#12
Vladimír Hrabovský, Victoria Takáčová, Eva Schréterová, Lydia Pastvová, Zuzana Hrabovská, Katarina Čurová, Leonard Siegfried
Yeasts frequently colonize non-sterile sites in the body. The aim of the study was to determine distribution in clinical samples and antifungal susceptibility to five antifungals. From January 2013 through June 2015, 800 isolates were obtained from intensive care unit patients. Candida albicans (58.9%), Candida glabrata (20.4%), Candida krusei (8.6%), and Candida parapsilosis (3.6%) were the leading species. Majority of the C. albicans isolates were susceptible to the fluconazole. Elevated voriconazole minimal inhibitory concentrations (MICs) were observed in isolates exhibiting high fluconazole MICs, most frequently in C...
March 30, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28357373/cryptococcus-flips-its-lid-membrane-phospholipid-asymmetry-modulates-antifungal-drug-resistance-and-virulence
#13
COMMENT
Erika Shor, Yina Wang, David S Perlin, Chaoyang Xue
Human fungal infections are increasing in prevalence and acquisition of antifungal drug resistance, while our antifungal drug armamentarium remains very limited, constituting a significant public health problem. Despite the fact that prominent antifungal drugs target the fungal cell membrane, very little is known about how fungal membrane biology regulates drug-target interactions. Asymmetrical phospholipid distribution is an essential property of biological membranes, which is maintained by a group of transporters that dynamically translocate specific phospholipid groups across the membrane bilayer...
August 1, 2016: Microbial Cell
https://www.readbyqxmd.com/read/28356416/in-vitro-antifungal-susceptibility-of-the-yeast-and-mould-phases-of-the-dimorphic-fungal-pathogen-emergomyces-africanus-formerly-emmonsia-species-from-hiv-infected-south-african-patients
#14
Tsidiso G Maphanga, Erika Britz, Thokozile G Zulu, Ruth S Mpembe, Serisha D Naicker, Ilan S Schwartz, Nelesh P Govender
Introduction: Disseminated emmonsiosis is an important AIDS-related mycosis in South Africa caused by Emergomyces africanus, a newly-described and -renamed dimorphic fungal pathogen. In vitro antifungal susceptibility data can guide management.Materials and Methods: Identification of invasive clinical isolates was confirmed phenotypically and by sequencing the internal transcribed spacer region. Yeast and mould-phase MICs for fluconazole, voriconazole, itraconazole, posaconazole, caspofungin, anidulafungin, micafungin and flucytosine were determined using custom-made frozen broth microdilution (BMD) panels, as per Clinical and Laboratory Standards Institute recommendations...
March 29, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28355467/new-pharmacological-opportunities-for-the-treatment-of-invasive-mould-diseases
#15
Marie-Pierre Ledoux, Elise Toussaint, Julie Denis, Raoul Herbrecht
Recently, several randomized studies have been published that will shape treatment decisions in the prevention and management of invasive mould infections. Liposomal amphotericin B is an option for empirical or targeted treatment of invasive aspergillosis or mucormycosis, but for prophylaxis therapy, the triazole class now predominates. The triazole voriconazole is currently regarded as a drug of choice for the treatment of proven or probable invasive aspergillosis, and has shown significantly higher response rates than amphotericin B deoxycholate in this setting, with fewer severe drug-related adverse events...
March 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28355463/therapeutic-drug-monitoring-for-invasive-mould-infections-and-disease-pharmacokinetic-and-pharmacodynamic-considerations
#16
Katharine E Stott, William W Hope
Therapeutic drug monitoring (TDM) may be required to achieve optimal clinical outcomes in the setting of significant pharmacokinetic variability, a situation that applies to a number of anti-mould therapies. The majority of patients receiving itraconazole should routinely be managed with TDM. Voriconazole exhibits highly variable inter-individual pharmacokinetics, and a trough concentration of 1.0-5.5 mg/L is widely accepted although it is derived from relatively low-quality evidence. The case for TDM of posaconazole is currently in a state of flux following the introduction of a newer tablet formulation with improved oral bioavailability, but it may be indicated when used for either prophylaxis or treatment of established disease...
March 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28355462/changes-in-the-epidemiological-landscape-of-invasive-mould-infections-and-disease
#17
Cornelia Lass-Flörl, Manuel Cuenca-Estrella
Although a wide variety of pathogens are associated with invasive mould diseases, Aspergillus spp. have historically been one of the most common causative organisms. Most invasive mould infections are caused by members of the Aspergillus fumigatus species complex and an emerging issue is the occurrence of azole resistance in A. fumigatus, with resistance to amphotericin B documented in other Aspergillus spp. The epidemiology of invasive fungal disease has shifted in recent years as non-A. fumigatus Aspergillus spp...
March 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28348770/non-traumatic-keratitis-due-to-colletotrichum-truncatum
#18
Reina Llamos, Abdullah M S Al-Hatmi, Gerardo Martínez, Ferry Hagen, Rosario Velar, Alexeide de la Caridad Castillo Pérez, Jacques F Meis, María T Illnait-Zaragozí
INTRODUCTION: The fungal genus Colletotrichum is an uncommon cause of human infections. It has been implicated in cutaneous phaeohyphomycosis, artritis and keratitis secondary to traumatic implantation. CASE PRESENTATION: We report two cases of keratitis due Colletotrichum truncatum in middle-aged, immunocompetent persons without history of trauma. The aetiological agents were identified based on DNA sequencing. Azoles and echinocandins showed high minimal inhibitory concentrations while amphotericin B was ≤ 0...
August 2016: JMM Case Reports
https://www.readbyqxmd.com/read/28344162/identification-of-genetic-markers-of-resistance-to-echinocandins-azoles-and-5-fluorocytosine-in-candida-glabrata-by-next-generation-sequencing-a-feasibility-study
#19
Chayanika Biswas, Sharon C-A Chen, Catriona Halliday, Karina Kennedy, E Geoffrey Playford, Deborah J Marriott, Monica A Slavin, Tania C Sorrell, Vitali Sintchenko
OBJECTIVES: Multi-antifungal drug resistance in Candida glabrata is increasing. We examined the feasibility of next generation sequencing (NGS) to investigate the presence of antifungal drug resistance markers in C. glabrata. METHODS: The antifungal susceptibility of 12 clinical isolates and one ATCC strain of C. glabrata was determined using the Sensititre YeastOne® YO10 assay. These included three isolate pairs where the second isolate of each pair had developed a rise in drug MICs...
March 23, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28339535/fungemia-due-to-rare-opportunistic-yeasts-data-from-a-population-based-surveillance-in-spain
#20
Mario Fernández-Ruiz, Jesús Guinea, Mireia Puig-Asensio, Óscar Zaragoza, Benito Almirante, Manuel Cuenca-Estrella, José María Aguado
Fungemia due to rare yeasts constitutes an emerging but poorly investigated condition. Data on risk factors, clinical features, therapy, and outcome of episodes of fungemia due to rare (non-Candida, non-Cryptococcus) yeasts were analyzed in a population-based surveillance program conducted in 29 Spanish hospitals between May 2010 and April 2011. Species identification (DNA sequencing) and antifungal susceptibility testing (EUCAST and CLSI methods) were centrally performed. Fourteen out of 767 episodes of fungemia (1...
August 5, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
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