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Invasive candidiasis

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https://www.readbyqxmd.com/read/27921082/global-role-of-cyclic-amp-signaling-in-ph-dependent-responses-in-candida-albicans
#1
Jeffrey M Hollomon, Nora Grahl, Sven D Willger, Katja Koeppen, Deborah A Hogan
Candida albicans behaviors are affected by pH, an important environmental variable. Filamentous growth is a pH-responsive behavior, where alkaline conditions favor hyphal growth and acid conditions favor growth as yeast. We employed filamentous growth as a tool to study the impact of pH on the hyphal growth regulator Cyr1, and we report that downregulation of cyclic AMP (cAMP) signaling by acidic pH contributes to the inhibition of hyphal growth in minimal medium with GlcNAc. Ras1 and Cyr1 are generally required for efficient hyphal growth, and the effects of low pH on Ras1 proteolysis and GTP binding are consistent with diminished cAMP output...
November 2016: MSphere
https://www.readbyqxmd.com/read/27919901/safety-and-pharmacokinetics-of-cd101-iv-a-novel-echinocandin-in-healthy-adults
#2
Taylor Sandison, Voon Ong, Jonathan Lee, Dirk Thye
CD101 IV is a novel echinocandin with distinctive pharmacokinetic properties that is being developed as a once-weekly treatment for candidemia and invasive candidiasis. CD101 has potent in vitro activity and in vivo efficacy against a broad range of Candida and Aspergillus species. The primary objective of two randomized, double-blind, placebo-controlled, dose-escalation studies in healthy adults was to determine the safety and tolerability of CD101 IV. Sequential cohorts of 8 subjects (n=6, active; n=2, placebo) were administered single (50, 100, 200, 400 mg) or multiple once-weekly (100 mg ×2, 200 mg ×2, 400 mg ×3) doses of CD101 IV infused over 1 hour...
December 5, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27919891/structure-activity-relationships-of-a-series-of-echinocandins-and-the-discovery-of-cd101-a-highly-stable-and-soluble-echinocandin-with-distinctive-pharmacokinetic-properties
#3
Kenneth D James, Christopher P Laudeman, Navdeep B Malkar, Radha Krishnan, Karen Polowy
Echinocandins are first-line therapy for candidemia and invasive candidiasis. They are generally safe with few drug interactions, but the stability and pharmacokinetic properties of currently approved echinocandins are such that each was developed for daily intravenous infusion. We sought to discover a novel echinocandin with properties that would enable more flexible dosing regimens, alternate routes of delivery, and expanded utility. Derivatives of known echinocandin scaffolds were generated, and an iterative process of design and screening led to the discovery of CD101, a novel echinocandin that has since demonstrated improved chemical stability and pharmacokinetics...
December 5, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27914593/systemic-and-localized-infection-by-candida-species-in-patients-with-rheumatic-diseases-receiving-anti-tnf-therapy
#4
Nadia E Aikawa, Daniela T A Rosa, Gilda M B Del Negro, Julio C B Moraes, Ana C M Ribeiro, Carla Gonçalves Saad, Clovis A Silva, Eloisa Bonfá
OBJECTIVE: To evaluate the prevalence of systemic and localized infection by Candida species and its possible association with demographic, clinical and laboratory manifestations and therapy in patients with rheumatic diseases taking TNF blockers. METHODS: Consecutive patients with rheumatic diseases receiving anti-TNF agents were included. The following risk factors up to four weeks prior to the study were analyzed: use of antibiotics, immunosuppressant drugs, hospitalization and invasive procedures...
November 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27909682/case-report-of-invasive-disseminated-candidiasis-with-peripheral-nodular-cavitary-lesions-in-the-lung
#5
Hafiza Arshad, Silvia Garcia, Misbahuddin Khaja
We report a case of invasive candidiasis presenting as multiple lung nodules and cavitary lesions with minimal pleural effusion. Candida infections of the lung are rare but can occur after hematologic dissemination of the yeast from other body sites, such as the skin and the gastrointestinal and genitourinary tracts. Here, we describe the case of a 56-year-old female with a history of end-stage renal disease (ESRD) who presented with fever, productive cough, and pulmonary nodules and cavitary lesions seen on a chest computed tomography (CT)...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27902377/comparison-of-susceptibility-patterns-using-commercially-available-susceptibility-testing-methods-performed-on-prevalent-candida-species
#6
David Cretella, Katie E Barber, S Travis King, Kayla R Stover
The rising rates of invasive fungal infections caused by non-albicans Candida and the increasing emergence of antifungal resistance complicate the management of invasive candidiasis. Accurate and timely antifungal susceptibility testing is critical to targeting antifungal therapy. The purpose of this study was to compare commercially available susceptibility testing methods using prospectively collected Candida isolates. Susceptibility testing was performed on 74 Candida isolates collected from July 2014-March 2015 using broth microdilution (BMD) according to the Clinical and Laboratory Standards Institute (CLSI) method, Etest, Vitek2 (YS-05), and Sensititre...
November 1, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27887809/an-estimation-of-burden-of-serious-fungal-infections-in-france
#7
J-P Gangneux, M-E Bougnoux, C Hennequin, C Godet, J Chandenier, D W Denning, B Dupont
OBJECTIVE OF THE STUDY: An estimation of burden of serious fungal diseases in France is essential data to inform public health priorities on the importance of resources and research needed on these infections. In France, precise data are available for invasive fungal diseases but estimates for several other diseases such as chronic and immunoallergic diseases are by contrast less known. MATERIALS AND METHODS: A systematic literature search was conducted using the Web of Science Platform...
November 22, 2016: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/27880667/the-current-treatment-landscape-other-fungal-diseases-cryptococcosis-fusariosis-and-mucormycosis
#8
Olivier Lortholary, Mario Fernández-Ruiz, John R Perfect
Compared with major invasive mycoses such as aspergillosis and candidiasis, the antifungal stewardship management strategies of other fungal diseases have different opportunities and considerations. Cryptococcosis, fusariosis and mucormycosis are globally prevalent invasive fungal diseases (IFDs), but are not currently included in antifungal prophylaxis guidelines for immunocompromised hosts. Since the implementation of biomarkers as part of diagnostic screening strategies, the concept of pre-emptive antifungal therapy has emerged for these IFDs...
November 2016: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/27872072/pharmacokinetics-of-anidulafungin-in-critically-ill-patients-in-the-intensive-care-unit-with-suspected-or-proven-invasive-fungal-infections
#9
R J M Brüggemann, V Middel-Baars, D W de Lange, A Colbers, A R J Girbes, P Pickkers, E L Swart
Echinocandins, such as anidulafungin are first line treatment for candidemia or invasive candidiasis in critically ill patients. There is conflicting data on the pharmacokinetic properties of anidulafungin in ICU patients. Adult ICU patients (from 3 hospitals) receiving anidulafungin for suspected or proven fungal infections were included. Patient were considered evaluable when a pharmacokinetic curve on day 3 could be completed. 23 out of 36 patients (7 female, 16 male) were evaluable. Median (range) age and bodyweight were 66 (28-88) yr and 76 (50-115) kg...
November 21, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27872017/secondarily-documented-invasive-candidiasis-is-unpredictable-using-traditional-risk-factors-in-non-transplant-non-neutropenic-adult-icu-patients
#10
Sébastien Bailly, Olivier Leroy, Hervé Dupont, Jean-François Timsit
No abstract text is available yet for this article.
November 18, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27862711/thalidomide-for-steroid-dependent-chronic-disseminated-candidiasis-after-stem-cell-transplantation-a-case-report
#11
Blandine Rammaert, Sophie Candon, Christophe Maunoury, Marie-Elisabeth Bougnou, Grégory Jouvion, Thorsten Braun, Jean-Michel Correas, Olivier Lortholary
Chronic disseminated candidiasis (CDC) is a rare and difficult-to-treat invasive fungal disease occurring mainly after prolonged and profound neutropenia. We describe the case of a 59-year-old man successfully treated with thalidomide for CDC recurrences after an autologous transplantation. We add evidences of the effectiveness of immunomodulatory drugs to manage inflammatory reconstitution immune syndrome-related refractory CDC. This article is protected by copyright. All rights reserved.
November 16, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27855112/low-caspofungin-exposure-in-patients-in-the-intensive-care-unit
#12
Kim C M van der Elst, Anette Veringa, Jan G Zijlstra, Albertus Beishuizen, Rob Klont, Petra Brummelhuis-Visser, Donald R A Uges, Daan J Touw, Jos G W Kosterink, Tjip S van der Werf, Jan-Willem C Alffenaar
In critically ill patients, drug exposure may be influenced by altered drug distribution and clearance. Earlier studies showed that the variability in caspofungin exposure was high in Intensive Care Unit (ICU) patients. The primary objective of this study was to determine if the standard dose of caspofungin resulted in adequate exposure in critically ill patients. A multicenter prospective study in ICU patients with (suspected) invasive candidiasis was conducted in the Netherlands, from November 2013 to October 2015...
November 14, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27855078/echinocandin-resistance-in-candida-spp-isolated-from-liver-transplant-recipients
#13
Gwénolé Prigent, Nawel Aït-Ammar, Eric Levesque, Arnaud Fekkar, Jean-Marc Costa, Sarra El Anbassi, Françoise Foulet, Christophe Duvoux, Jean-Claude Merle, Eric Dannaoui, Françoise Botterel
Liver transplant recipients are at risk of invasive fungal infections, especially candidiasis. Echinocandin is recommended as prophylactic treatment but is increasingly associated with resistance. Our aim was to assess echinocandin drug resistance in Candida spp. isolated from liver transplant recipients treated with this antifungal class. For this, all liver-transplanted patients in a University Hospital (Créteil, France) between January and June of 2013 and 2015 were included. Susceptibilities of Candida isolates to echinocandins were tested by Etest® and EUCAST reference method...
November 14, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27850306/667-identifying-risk-factors-for-invasive-candidiasis-in-the-critically-ill
#14
Ginger Gamble, Jessica Cope, Jennifer Ashton, Stacy Voils, Ali Ataya, Kenneth Klinker, Hassan Alnuaimat
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27850297/658-prediction-of-invasive-candidiasis-in-a-veteran-population-validation-of-the-candida-score
#15
Tommie Guidry, Whitney Elliott, Amanda Gillion, Steven Woods, Muthiah Muthiah
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27849744/64-outcomes-of-patients-with-invasive-candidiasis-in-the-united-states-a-nationwide-study
#16
Gagan Kumar, Dhaval Patel, Ankit Sakhuja, Kianoush Kashani
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27837497/the-changing-epidemiology-of-invasive-fungal-infections
#17
David A Enoch, Huina Yang, Sani H Aliyu, Christianne Micallef
Invasive fungal infections (IFI) are an emerging problem worldwide with invasive candidiasis and candidemia responsible for the majority of cases. This is predominantly driven by the widespread adoption of aggressive immunosuppressive therapy among certain patient populations (e.g., chemotherapy, transplants) and the increasing use of invasive devices such as central venous catheters (CVCs). The use of new immune modifying drugs has also opened up an entirely new spectrum of patients at risk of IFIs. While the epidemiology of candida infections has changed in the last decade, with a gradual shift from C...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27816138/nosocomial-fungal-infections-epidemiology-infection-control-and-prevention
#18
REVIEW
Geehan Suleyman, George J Alangaden
Invasive fungal infections are an important cause of morbidity and mortality in hospitalized patients and in the immunocompromised population. This article reviews the current epidemiology of nosocomial fungal infections in adult patients, with an emphasis on invasive candidiasis and aspergillosis. Recently published recommendations and guidelines for the control and prevention of these nosocomial fungal infections are summarized in this article.
December 2016: Infectious Disease Clinics of North America
https://www.readbyqxmd.com/read/27814401/the-kallikrein-kinin-system-a-novel-mediator-of-il-17-driven-anti-candida-immunity-in-the-kidney
#19
Kritika Ramani, Abhishek V Garg, Chetan V Jawale, Heather R Conti, Natasha Whibley, Edwin K Jackson, Sruti S Shiva, William Horne, Jay K Kolls, Sarah L Gaffen, Partha S Biswas
The incidence of life-threatening disseminated Candida albicans infections is increasing in hospitalized patients, with fatalities as high as 60%. Death from disseminated candidiasis in a significant percentage of cases is due to fungal invasion of the kidney, leading to renal failure. Treatment of candidiasis is hampered by drug toxicity, the emergence of antifungal drug resistance and lack of vaccines against fungal pathogens. IL-17 is a key mediator of defense against candidiasis. The underlying mechanisms of IL-17-mediated renal immunity have so far been assumed to occur solely through the regulation of antimicrobial mechanisms, particularly activation of neutrophils...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27800196/chronic-disseminated-candidiasis-complicated-by-immune-reconstitution-inflammatory-syndrome-in-child-with-acute-lymphoblastic-leukemia
#20
Olga Zając-Spychała, Bogna Ukielska, Katarzyna Jończyk-Potoczna, Benigna Konatkowska, Jacek Wachowiak
Hepatosplenic candidiasis also known as chronic disseminated candidiasis is a rare manifestation of invasive fungal infection typically observed in patients with acute leukemia in prolonged, deep neutropenia. Immune reconstitution inflammatory syndrome (IRIS) is an inflammatory disorder triggered by rapid resolution of neutropenia. Diagnosis and treatment of IRIS are still challenging due to a variety of clinical symptoms, lack of certain diagnostic criteria, and no standards of treatment. The diagnosis of IRIS is even more difficult in patients with hematological malignancies complicated by "probable" invasive fungal infection, when fungal pathogen is still uncertain...
2016: Case Reports in Hematology
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