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https://www.readbyqxmd.com/read/29333407/the-limited-role-of-serum-galactomannan-assay-in-screening-for-invasive-pulmonary-aspergillosis-in-allogeneic-stem-cell-transplantation-recipients-on-micafungin-prophylaxis-a-retrospective-study
#1
Ryul Kim, Youngil Koh, Dong-Yeop Shin, Pyoeng Gyun Choe, Nam Joong Kim, Sung-Soo Yoon, Myoung-Don Oh, Wan Beom Park, Inho Kim
Background: We evaluated the outcomes of serum galactomannan (GM) assay for the screening of invasive pulmonary aspergillosis (IPA) in allogeneic hematopoietic stem cell transplantation (alloHSCT) recipients while on primary antifungal prophylaxis (PAP). Methods: This study included patients with hematologic disorders who underwent alloHSCT from January 2013 to November 2015. Patients received routine PAP with fluconazole before 2014 and micafungin after 2014; serum GM tests were performed and retrospectively analyzed...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29323188/a-tet-off-gene-expression-system-for-validation-of-antifungal-drug-targets-in-a-murine-invasive-pulmonary-aspergillosis-model
#2
Yutian Peng, Hua Zhang, Min Xu, Man-Wah Tan
Aspergillus fumigatus is one of the major causes of invasive pulmonary aspergillosis in immunocompromised patients. Novel antifungal therapy is in urgent need due to emerging resistance and adverse toxicity of current antifungal drugs. Gene products that are essential for Aspergillus viability during infection are attractive drug targets. To characterize these genes in vivo we developed a Tet-Off gene expression system in A. fumigatus, whereby the administration of doxycycline resulted in down regulation of the gene whose expression is under the control of the Tet-Off promoter...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322720/invasive-aspergillus-pseudomembranous-and-obstructive-tracheo-bronchitis-in-an-immuno-competent-patient
#3
Ramesh S Pal, Sonam Spalgais, Amit Kumar Murar, Umesh Chandra Ojha
A 19 year female, presented with life threatening haemoptysis and cough with minimum expectoration for 3 months. Bronchoscopy showed multiple nodules in airway. The direct microscopy and culture of sputum revealed fungal elements and Aspergillus flavus respectively. Serum Galactomannan was positive. Thus diagnosis of invasive aspergillus tracheo-bronchitis made. She responded to voriconazole. Aspergillus tracheo-bronchitis is a rare form of invasive pulmonary aspergillosis in immuno-competent host. Aspergillus spp in respiratory samples should not be routinely discarded as colonization...
November 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29311090/investigation-of-multiple-resistance-mechanisms-in-voriconazole-resistant-aspergillus-flavus-clinical-isolates-from-a-chest-hospital-surveillance-in-delhi-india
#4
Cheshta Sharma, Rakesh Kumar, Nitin Kumar, Aradhana Masih, Dinesh Gupta, Anuradha Chowdhary
Invasive and allergic infections by Aspergillus flavus are more common in tropical and subtropical countries. The emergence of voriconazole (VRC) resistance in A. flavus impacts the management of aspergillosis as azoles are used as the first line and empiric therapy. We screened molecularly confirmed 120 A. flavus isolates obtained from respiratory and sino-nasal specimens in a chest hospital in Delhi for azole resistance using CLSI BMD method. Overall, 2.5% (n=3/120) of A. flavus isolates had VRC MICs above epidemiological cutoff values (>1μg/ml)...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29310378/isolated-cerebral-aspergillosis-in-an-immunocompetent-woman-on-treatment-for-bacterial-infected-necrotizing-pancreatitis-a-case-report
#5
Shaoyang Zhang, Qinghui Fu, Qi Chen, Ting-Bo Liang
RATIONALE: Cerebral aspergillosis (CA) is a rare manifestation of invasive aspergillosis. It usually affects seriously immunocompromised hosts. Pancreatic bacterial or/and fungal infection is common in patients with severe acute pancreatitis. PATIENT CONCERNS: We report the first case of an immunocompetent woman with infected necrotizing pancreatitis due to multidrug resistant Acinetobacter baumannii who, in the course of treatment, developed isolated CA. DIAGNOSES: Magnetic resonance imaging, rather than computed tomography, revealed latent homolateral sinus disease-the possible source of the Aspergillus infection...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29304212/use-of-echinocandin-prophylaxis-in-solid-organ-transplantation
#6
Maddalena Giannella, Shahid Husain, Faouzi Saliba, Pierluigi Viale
Invasive fungal infections (IFIs) are a major threat to patients undergoing solid organ transplantation (SOT). Owing to improvements in surgical techniques, immunosuppression therapy and antifungal prophylaxis, the incidence of IFIs has been decreasing in recent years. However, IFI-associated morbidity and mortality remain significant. Invasive candidiasis (IC) and aspergillosis (IA) are the main IFIs after SOT. Risk factors for IC and IA continue to evolve, and thus strategies for their prevention should be constantly updated and targeted to both individual patient risk factors and local epidemiology...
January 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29283878/occupational-cns-aspergillosis-in-an-immunocompetent-individual-a-diagnostic-challange
#7
Parul Punia, Nidhi Goel, Ishwar Singh, Uma Chaudhary
INTRODUCTION: Immunocompetent individuals are rarely affected by Aspergillus species and its prime importance lies in immunocompromised patients where it can cause disease, ranging from primarily pulmonary infections to dissemination anywhere in the body. Invasive aspergillosis (IA) occurs in patients with risk factors including prolonged neutropenia, neutrophil dysfunction, patient on cytotoxic drugs, steroid therapy, hematological malignancy, AIDS or in patients with bone marrow transplantation...
December 28, 2017: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/29281994/successful-treatment-of-cerebral-aspergillosis-case-report-of-a-patient-with-t-cell-large-granular-lymphocytic-leukemia-t-lgl
#8
Amin T Turki, Jassin Rashidi-Alavijeh, Jan Dürig, Guido Gerken, Peter-Michael Rath, Oliver Witzke
BACKGROUND: Invasive aspergillosis involving patients with neutropenia or severe immunosuppression, such as patients with hematologic malignancies is associated with high mortality. Patients with T-cell large granular lymphocytic leukemia (T-LGL) on the other hand are considered to be less vulnerable for severe opportunistic fungal infection as their course of disease is chronic and marked by less violent cytopenia then in e.g. Aplastic Anemia. Only neutropenia is regarded as independent risk factor for severe opportunistic infection in T-LGL patients...
December 28, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29281730/correction-systematic-review-and-meta-analysis-of-detecting-galactomannan-in-bronchoalveolar-lavage-fluid-for-diagnosing-invasive-aspergillosis
#9
Mingxiang Zou, Lanhua Tang, Shushan Zhao, Zijin Zhao, Luyao Chen, Peng Chen, Zebing Huang, Jun Li, Lizhang Chen, Xuegong Fan
[This corrects the article DOI: 10.1371/journal.pone.0043347.].
2017: PloS One
https://www.readbyqxmd.com/read/29273978/challenges-and-solution-of-invasive-aspergillosis-in-non-neutropenic-patients-a-review
#10
REVIEW
Matteo Bassetti, Maddalena Peghin, Antonio Vena
Invasive aspergillosis (IA) is a serious opportunistic infection, which has increasingly been recognized as an emerging disease of non-neutropenic patients. In this group of patients, the diagnosis of IA can be challenging owing to the lack of specificity of symptoms, the difficulty in discriminating colonization from infection, and the lower sensitivity of microbiological and radiological tests compared with immunocompromised patients. The aim of this article is to present to clinicians a critical review on the management of IA in non-neutropenic patients...
December 22, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/29259396/galactomannan-in-bronchoalveolar-lavage-fluid-for-diagnosis-of-invasive-pulmonary-aspergillosis-with-nonneutropenic-patients
#11
Qidong Zhuang, Hongying Ma, Yun Zhang, Lei Chen, Li Wang, Lin Zheng, Zaichun Deng, Zhongbo Chen
Background: We evaluated the utility of galactomannan (GM) in bronchoalveolar lavage fluid (BALF) for the diagnosis of invasive pulmonary aspergillosis (IPA) in nonneutropenic patients. Methods: A total of 183 patients were included in the final analysis. Bronchoscopies and the detection of GM in BALF were all performed on them. Results: Ten cases of IPA were diagnosed. ROC data demonstrated that, for diagnosing IPA, an optimal cutoff value for GM in BALF of 0...
2017: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29251506/scanning-quadrupole-data-independent-acquisition-part-b-application-to-the-analysis-of-the-calcineurin-interacting-proteins-during-treatment-of-aspergillus-fumigatus-with-azole-and-echinocandin-antifungal-drugs
#12
Praveen R Juvvadi, M Arthur Moseley, Christopher J Hughes, Erik J Soderblom, Sarah Lennon, Simon R Perkins, J Will Thompson, Scott J Geromanos, Jason Wildgoose, Keith Richardson, James I Langridge, Johannes P C Vissers, William J Steinbach
Calcineurin is a critical cell-signaling protein that orchestrates growth, stress response, virulence, and antifungal drug resistance in several fungal pathogens. Blocking calcineurin signaling increases the efficacy of several currently available antifungals and suppresses drug resistance. We demonstrate the application of a novel scanning quadrupole DIA method for the analysis of changes in the proteins coimmunoprecipitated with calcineurin during therapeutic antifungal drug treatments of the deadly human fungal pathogen Aspergillus fumigatus...
December 29, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29248928/differential-kinetics-of-aspergillus-nidulans-and-aspergillus-fumigatus-phagocytosis
#13
Mark S Gresnigt, Katharina L Becker, Floris Leenders, M Fernanda Alonso, Xiaowen Wang, Jacques F Meis, Judith M Bain, Lars P Erwig, Frank L van de Veerdonk
Invasive aspergillosis mainly occurs in immunocompromised patients and is commonly caused by Aspergillus fumigatus, while A.nidulans is rarely the causative agent. However, in chronic granulomatous disease (CGD) patients, A. nidulans is a frequent cause of invasive aspergillosis and is associated with higher mortality. Immune recognition of A. nidulans was compared to A. fumigatus to offer an insight into why A. nidulans infections are prevalent in CGD. Live cell imaging with J774A.1 macrophage-like cells and LC3-GFP-mCherry bone marrow-derived macrophages (BMDMs) revealed that phagocytosis of A...
December 16, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29248586/improving-the-diagnosis-of-invasive-aspergillosis-by-the-detection-of-aspergillus-in-broncho-alveolar-lavage-fluid-comparison-of-non-culture-based-assays
#14
Hélène Guegan, Florence Robert-Gangneux, Christophe Camus, Sorya Belaz, Tony Marchand, Marion Baldeyrou, Jean-Pierre Gangneux
OBJECTIVES: This study aimed to evaluate new tools to diagnose invasive aspergillosis (IA) directly from broncho-alveolar lavage (BAL) samples. METHODS: All consecutive patients with suspected IA who underwent bronchoscopy with BAL were prospectively included. Mycological culture and ELISA detection of galactomannan (GM) were performed on BAL. Two in-house and two marketed PCR assays were used on BAL DNA extracts to detect Aspergillus species. Susceptibility testing was performed after culture; marketed PCR assays detected mutations in the CYP51A gene associated to resistance...
December 14, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29245249/characteristics-of-culture-positive-invasive-pulmonary-aspergillosis-in-patients-with-hematologic-diseases-comparison-between-aspergillus-fumigatus-and-non-fumigatus-aspergillus-species
#15
Sung-Yeon Cho, Dong-Gun Lee, Jae-Ki Choi, Hyo-Jin Lee, Si-Hyun Kim, Sun Hee Park, Su-Mi Choi, Jung-Hyun Choi, Jin-Hong Yoo, Yeon-Joon Park, Jong-Wook Lee
While the epidemiology and clinical differences of various Candida spp. has been relatively well-identified, data regarding invasive aspergillosis (IA) caused by different Aspergillus spp. are insufficient.We aimed to determine the epidemiology of culture-positive invasive pulmonary aspergillosis (IPA) and to compare the characteristics and outcomes of Aspergillus fumigatus IPA with those of non-fumigatus IPA in patients with hematologic diseases. All consecutive cases of IPA from 2011 to 2015 were reviewed retrospectively...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29239916/early-experience-with-clinimacs-prodigy-ccs-ifn-gamma-system-in-selection-of-virus-specific-t-cells-from-third-party-donors-for-pediatric-patients-with-severe-viral-infections-after-hematopoietic-stem-cell-transplantation
#16
Krisztián Kállay, Csaba Kassa, Marienn Réti, Éva Karászi, János Sinkó, Vera Goda, Anita Stréhn, Katalin Csordás, Orsolya Horváth, Attila Szederjesi, Szabolcs Tasnády, Apor Hardi, Gergely Kriván
Viral reactivation is a frequent complication of allogeneic hematopoietic stem cell transplantation especially in children. For refractory cases, rapid virus-specific T-cell therapy would be ideally implemented within a few days. Over the course of a year in our pediatric cohort of 43 allogeneic transplantation, 9 patients fulfilled criteria for virus-specific T-cell therapy. Viral infections were due to cytomegalovirus (CMV) in 3, Epstein-Barr virus (EBV) in 2, and adenovirus (AdV) in 1 case, whereas >1 virus was detected in 3 cases...
December 12, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29239468/the-importance-of-risk-factors-for-the-prediction-of-patients-with-invasive-pulmonary-aspergillosis
#17
Selçuk Kaya, Eda Gençalioğlu, Mehmet Sönmez, Iftihar Köksal
OBJECTIVE: Invasive pulmonary aspergillosis (IPA) is a major challenge in the management of immunocompromised patients. Despite all the advances in diagnosis, it remains a problem. The purpose of our study was to investigate the risk factors associated with IPA seen in patients with hematological malignancies. METHOD: A total of 152 febrile neutropenia (FEN) patients with hematological malignancies aged over 18 years and receiving high-dose chemotherapy or stem cell transplant between January 1, 2010, and December 31, 2012 were included in the study...
September 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29239266/epidemiology-of-invasive-pulmonary-aspergillosis-in-patients-with-liver-failure-clinical-presentation-risk-factors-and-outcomes
#18
Xuan Zhang, Meifang Yang, Jianhua Hu, Hong Zhao, Lanjuan Li
Objective Invasive pulmonary aspergillosis (IPA) is a severe and often lethal infection. The possible risk factors, clinical presentation, and treatment of patients with simultaneous liver failure and IPA have received little attention in previous studies. The aim of this study was to investigate the epidemiology of IPA in patients with liver failure in an effort to reduce patient mortality. Methods The patients with liver failure (including acute liver failure , sub-acute liver failure , acute-on-chronic liver failure and chronic liver failure) were recruited from 2011 to 2016...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29238334/evaluation-of-bronchoalveolar-lavage-fluid-cytokines-as-biomarkers-for-invasive-pulmonary-aspergillosis-in-at-risk-patients
#19
Samuel M Gonçalves, Katrien Lagrou, Cláudia S Rodrigues, Cláudia F Campos, Leticia Bernal-Martínez, Fernando Rodrigues, Ricardo Silvestre, Laura Alcazar-Fuoli, Johan A Maertens, Cristina Cunha, Agostinho Carvalho
Background: Invasive pulmonary aspergillosis (IPA) is an infection that primarily affects immunocompromised hosts, including hematological patients and stem-cell transplant recipients. The diagnosis of IPA remains challenging, making desirable the availability of new specific biomarkers. High-throughput methods now allow us to interrogate the immune system for multiple markers of inflammation with enhanced resolution. Methods: To determine whether a signature of alveolar cytokines could be associated with the development of IPA and used as a diagnostic biomarker, we performed a nested case-control study involving 113 patients at-risk...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29229641/hyperbaric-oxygen-reduces-aspergillus-fumigatus-proliferation-in-vitro-and-influences-in-vivo-disease-outcomes
#20
Sourabh Dhingra, Jay C Buckey, Robert A Cramer
Recent estimates suggest that more than 3 million people have chronic or invasive fungal infections, causing more than 600,000 deaths every year. Aspergillus fumigatus causes invasive pulmonary aspergillosis (IPA) in patients with compromised immune systems and is a primary contributor to increases in human fungal infections. Thus, developing new clinical modalities as standalone or adjunctive therapy for improving IPA patient outcomes is critically needed. Here we test the in vitro and in vivo impact of hyperbaric oxygen (100% oxygen, >1 ATA) (HBO) on A...
December 11, 2017: Antimicrobial Agents and Chemotherapy
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