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Fungal invasive infection

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https://www.readbyqxmd.com/read/27932434/rapidly-progressing-dual-infection-with-aspergillus-and-rhizopus-when-soil-inhabitants-become-deadly-invaders
#1
Milind Bhagat, Alwyn Rapose
We present a case report of a 61-year-old patient with acute pulmonary and cerebral infections with Aspergillus and Rhizopus. The only risk factor for invasive fungal disease was high-dose corticosteroids used to treat her chronic obstructive pulmonary disease exacerbation. She had rapid progression and succumbed to her infections within 2 weeks of diagnosis in spite of aggressive antifungal therapy and surgery. To the best of our knowledge, this is the first reported case of rapidly fatal dual infection with Aspergillus and Rhizopus Our case highlights the role of high-dose corticosteroids as a risk factor for invasive fungal disease in patients without traditional risk factors like haematological malignancies, solid organ transplantation or uncontrolled diabetes...
December 8, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27932432/fungal-mobile-mass-on-echocardiogram-native-mitral-valve-aspergillus-fumigatus-endocarditis
#2
Rymon Rofaiel, Yosra Turkistani, David McCarty, Seyed M Hosseini-Moghaddam
The most common type of infective endocarditis is bacterial endocarditis. However, fungal infections have been seen more frequently, mostly in the immunocompromised population. We report a case of invasive Aspergillus fumigatus native mitral valve endocarditis. The patient received appropriate empiric antifungal treatment with a combination of liposomal amphotericin B and flucytosine, associated with surgical debridement, valve replacement and chordae tendineae repair. Despite receiving the standard treatment of Aspergillus endocarditis, and susceptibility of the microorganism to the antifungal regimen, the patient, unexpectedly, developed early-onset septic emboli...
December 8, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27931145/high-risk-of-invasive-fungal-infections-in-adult-acute-lymphoblastic-leukemia-patients-receiving-induction-and-salvage-chemotherapy
#3
Ming-Hsun Bryan Keng, Hui-Lin Clara Keng, Ban-Hock Tan, Gee-Chuan Wong
No abstract text is available yet for this article.
December 8, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27928649/the-diagnostic-value-of-1%C3%A2-%C3%A2-%C3%A2-3-beta-d-glucans-and-galactomannan-assays-in-children-suffering-from-bacteremia-in-pediatric-intensive-care-unit
#4
Fang Zheng, Yelian Gu, Hui Zha, Jun Deng, Zhiquan Zhang
The value of (1 → 3)-beta-D-glucans (BG) and galactomannan (GM) assays on diagnostic invasive fungal infections (IFIs) has been observed in adult ICU and in children with hematological malignancies. Only scant data evaluated non-hematological in pediatric intensive care unit (PICU). Here, we retrospectively analyzed the role of bacterial infection to the reactivity of BG and GM assays in PICU. The results showed that the overall prevalence of bacteremia was 13.8% (65/470). The most common underlying disease was pneumonia (81...
December 7, 2016: Mycopathologia
https://www.readbyqxmd.com/read/27927037/clinical-hepatotoxicity-associated-with-antifungal-agents
#5
Ioannis Kyriakidis, Athanasios Tragiannidis, Silke München, Andreas H Groll
Invasive fungal diseases (IFDs) are a leading cause of morbidity and mortality among immunocompromised patients with bone marrow failure syndromes, hematological malignancies, hematopoietic stem cell transplantation (HSCT), those admitted in intensive care units (ICUs) and those with prolonged febrile neutropenia. IFDs occur in a setting of multiple morbidities and are associated with case fatality rates between 30 and 70%. Along with the development of classes and compounds, the last two decades have seen substantial improvements in the prevention and management of these infections and an overall increased use of antifungal agents...
December 7, 2016: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27920389/resistance-in-persisting-bat-populations-after-white-nose-syndrome-invasion
#6
Kate E Langwig, Joseph R Hoyt, Katy L Parise, Winifred F Frick, Jeffrey T Foster, A Marm Kilpatrick
Increases in anthropogenic movement have led to a rise in pathogen introductions and the emergence of infectious diseases in naive host communities worldwide. We combined empirical data and mathematical models to examine changes in disease dynamics in little brown bat (Myotis lucifugus) populations following the introduction of the emerging fungal pathogen Pseudogymnoascus destructans, which causes the disease white-nose syndrome. We found that infection intensity was much lower in persisting populations than in declining populations where the fungus has recently invaded...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27915305/dna-barcoding-coupled-with-high-resolution-melting-analysis-enables-rapid-and-accurate-distinction-of-aspergillus-species
#7
Gabor Fidler, Sandor Kocsube, Eva Leiter, Sandor Biro, Melinda Paholcsek
We describe a high-resolution melting (HRM) analysis method that is rapid, reproducible, and able to identify reference strains and further 40 clinical isolates of Aspergillus fumigatus (14), A. lentulus (3), A. terreus (7), A. flavus (8), A. niger (2), A. welwitschiae (4), and A. tubingensis (2). Asp1 and Asp2 primer sets were designed to amplify partial sequences of the Aspergillus benA (beta-tubulin) genes in a closed-, single-tube system. Human placenta DNA, further Aspergillus (3), Candida (9), Fusarium (6), and Scedosporium (2) nucleic acids from type strains and clinical isolates were also included in this study to evaluate cross reactivity with other relevant pathogens causing invasive fungal infections...
December 3, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/27915301/assessing-the-risk-of-false-positive-serum-galactomannan-among-patients-receiving-piperacillin-tazobactam-for-febrile-neutropenia
#8
Hayati Demiraslan, M Altay Atalay, Esma Eren, Koray Demir, Leylagul Kaynar, A Nedret Koc, Mehmet Doganay
Galactomannan (GM) assay is commonly used as an early diagnostic tool for invasive fungal infection (IFI) in high-risk hematology patients. False positivity is frequently observed in GM with the use of piperacillin/tazobactam. The usage of generic drugs over the original brand has a significant cost advantage. The aim of this study was to assess the performance of GM test among patients receiving original and generic piperacillin/tazobactam formulations. The study included 85 adult patients; 62.4% were male with hematological malignancy currently receiving piperacillin/tazobactam...
December 2, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/27914593/systemic-and-localized-infection-by-candida-species-in-patients-with-rheumatic-diseases-receiving-anti-tnf-therapy
#9
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/27913461/primary-immune-deficiencies-with-defects-in-neutrophil-function
#10
Mary C Dinauer
Immune deficiencies resulting from inherited defects in neutrophil function have revealed important features of the innate immune response. Although sharing an increased susceptibility to bacterial and fungal infections, these disorders each have distinctive features in their clinical manifestations and characteristic microbial pathogens. This review provides an update on several genetic disorders with impaired neutrophil function, their pathogenesis, and treatment strategies. These include chronic granulomatous disease, which results from inactivating mutations in the superoxide-generating nicotinamide dinucleotide phosphate oxidase...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913132/rapid-identification-of-candida-spp-frequently-involved-in-invasive-mycoses-by-using-flow-through-hybridization-and-gene-chip-fhgc-technology
#11
Chen Li, Xiurong Ding, Zhizhong Liu, Juanjuan Zhu
The incidence of invasive fungal infections in immunocompromised patients has increased in recent decades. Rapid and accurate identification of these pathogenic fungi is crucial for initiating a timely, safe, and effective antifungal therapy. Here we developed a microarray based on flow-through hybridization gene chip technology. The microarray was tested for its specificity using a panel of reference and blinded clinical isolates. The results proved that this microarray was highly discriminative, leading to the unequivocal identification of each species, including Candida famata and the highly related species Candida parapsilosis, Candida orthopsilosis, and Candida metapsilosis...
November 29, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27910211/comparison-of-serum-concentrations-between-different-dosing-strategies-of-posaconazole-delayed-release-tablet-at-a-large-academic-medical-centre
#12
Sarah Welch, Andrea Pallotta, Catherine Weber, Caitlin Siebenaller, Eric Cober, Elizabeth Neuner
It is unclear if the prophylaxis dose of 300 mg/day is sufficient for achieving serum concentrations targeting the treatment of invasive fungal infections. To evaluate differences between PCZ serum concentrations in patients receiving the DRT vs the OS and in patients receiving higher doses than 300 mg/day of the DRT, a retrospective review was conducted on inpatients who received PCZ for either treatment or prophylaxis. Baseline demographics including comorbid conditions, indication and dose of therapy were collected...
December 1, 2016: Mycoses
https://www.readbyqxmd.com/read/27904738/recent-developments-in-the-management-of-invasive-fungal-infections-in-patients-with-oncohematological-diseases
#13
REVIEW
Markus Ruhnke, Stefan Schwartz
Patients with hematological cancer have a high risk of invasive fungal diseases (IFDs). These infections are mostly life threatening and an early diagnosis and initiation of appropriate antifungal therapy are essential for the clinical outcome. Most commonly, Aspergillus and Candida species are involved. However, other non-Aspergillus molds are increasingly be identified in cases of documented IFDs. Important risk factors are long lasting granulocytopenia with neutrophil counts below 500/μl for more than 10 days or graft-versus-host disease resulting from allogeneic stem-cell transplantation...
December 2016: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/27904061/diagnosis-and-treatment-of-mucormycosis-in-patients-with-hematological-malignancies
#14
Yuki Asano-Mori
The risk of invasive fungal infections (IFIs) is extremely high in patients with hematological malignancies due to the prolonged and profound neutropenia and immunosuppression after chemotherapy and hematopoietic stem cell transplantation. There has been increasing interest in mucormycosis despite its relatively uncommon occurrence, because occasional breakthrough infections have been observed under anti-aspergillus prophylaxis. The aggressive nature of mucormycosis easily leads to high mortality because of delays in diagnosis and incorrect treatment decisions, which are due in part to lack of adjunctive diagnostic tools and having similar clinical and radiological features with aspergillosis...
2016: Medical Mycology Journal
https://www.readbyqxmd.com/read/27903025/-antifungal-medication-new-substances-new-experiences
#15
Dieter Buchheidt, Wolf-Karsten Hofmann
The incidence of life threatening invasive fungal infections in patients with hematological malignancies during intensive chemotherapy or after hematopoetic stem cell transplantation, patients after solid organ transplantation, ICU patients and premature infants is rising. Mortality rates of invasive fungal infections, caused by Aspergillus species or mucormycetes, may reach 100%, in spite of considerable progress in diagnosis, antifungal prophylaxis and therapy. Comprehensive, profound knowledge of specific diagnostic and current treatment algorithms is essential to improve the prognosis of patients suffering from systemic fungal infections; this article encompasses recent developments in the field of antifungal treatment...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27902424/clinical-evaluation-of-mucorales-specific-real-time-pcr-assay-in-tissue-and-serum-samples
#16
Jan Springer, Michaela Lackner, Christian Ensinger, Brigitte Risslegger, Charles Oliver Morton, David Nachbaur, Cornelia Lass-Flörl, Hermann Einsele, Werner J Heinz, Juergen Loeffler
Molecular diagnostic assays can accelerate the diagnosis of fungal infections and subsequently improve patient outcomes. In particular, the detection of infections due to Mucorales is still challenging for laboratories and physicians. The aim of this study was to evaluate a probe-based Mucorales-specific real-time PCR assay (Muc18S) using tissue and serum samples from patients suffering from invasive mucormycosis (IMM). This assay can detect a broad range of clinically relevant Mucorales species and can be used to complement existing diagnostic tests or to screen high-risk patients...
October 24, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902377/comparison-of-susceptibility-patterns-using-commercially-available-susceptibility-testing-methods-performed-on-prevalent-candida-species
#17
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/27900825/fungal-infection-dynamics-in-response-to-temperature-in-the-lepidopteran-insect-galleria-mellonella
#18
Vadim Y Kryukov, Olga N Yaroslavtseva, Miranda M A Whitten, Maksim V Tyurin, Katherine J Ficken, Carolyn Greig, Nadja R Melo, Viktor V Glupov, Ivan M Dubovskiy, Tariq M Butt
This study examines how the dynamics of fungus - insect interactions can be modulated by temperature. The wax moth, Galleria mellonella, is a well-studied and important model insect whose larvae in the wild develop optimally at around 34°C in beehives. However, surprisingly little research on wax moths has been conducted at relevant temperatures. In this study, the entomopathogenic fungus Metarhizium robertsii inflicted rapid and substantial mortality on wax moth larvae maintained at a constant temperature of 24°C, but at 34°C a ten-fold higher dose was required to achieve an equivalent mortality...
November 29, 2016: Insect Science
https://www.readbyqxmd.com/read/27900022/conversion-of-aspergilloma-to-chronic-necrotizing-pulmonary-aspergillosis-following-treatment-with-sunitinib-a-case-report
#19
Yeon Wook Kim, Hyun Woo Lee, Jaeyoung Cho, Han-Sol Choi, Jungsil Lee, Sung Soo Park, Eun Young Heo, Kwang Nam Jin, Deog Kyeom Kim
Semi-invasive or invasive aspergillosis occurring following chemotherapy with sunitinib is a rare condition with unknown incidence and prognosis. Here, we report a case involving a 59-year-old male who had a history of underlying stable aspergilloma and was newly diagnosed with metastatic renal cell carcinoma. Following surgical resection for renal cell carcinoma and adjuvant chemotherapy with sunitinib for 8 months, the patient presented with hemoptysis. Chest computed tomography revealed an increased soft tissue mass and air crescent sign of the underlying aspergilloma, combined with consolidation and bronchial artery hypertrophy around the lesion...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27897041/novel-antifungal-agents-a-patent-review-2013-present
#20
María Victoria Castelli, Marcos Gabriel Derita, Silvia Noelí López
Superficial infections involving the skin and mucosa are the most common fungal disease in humans. Fungi can also produce invasive infections (IFI), which are increasing in incidence among the growing population of immunocompromised patients, and are characterized by a high mortality rate. Amphotericin B, new triazoles and echinocandins have improved treatment options in IFI. However, the frequency of less common and more resistant fungi, the limited activity of available antifungal drugs and their undesirable side effects reflect the urgent need for the development of new therapeutic strategies...
November 29, 2016: Expert Opinion on Therapeutic Patents
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