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Pulmonary aspergillosis

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https://www.readbyqxmd.com/read/28634301/microbial-glycoside-hydrolases-as-antibiofilm-agents-with-cross-kingdom-activity
#1
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/28631658/a-case-of-aspergillus-tracheobronchitis-in-a-patient-with-chronic-obstructive-pulmonary-disease
#2
Ming-Li Yuan, Gang Yang, Hong-Ling Hu, Wen Yin, Wei-Jun Tan, Su Zhao
Aspergillus tracheobronchitis (AT) is a unique form of invasive pulmonary aspergillosis, which is commonly found in patients with impaired immunity. Early-stage AT presents in a nonspecific way, both clinically and radiographically, thereby delaying diagnosis and resulting in a high mortality. Owing to impaired mucociliary clearance, previous nonfungal infections, and administration of corticosteroids, among other aspects, patients with chronic obstructive pulmonary disease (COPD) are predisposed to AT, although they are mostly immunocompetent...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28626542/invasive-aspergillosis-with-disseminated-skin-involvement-in-a-patient-with-acute-myeloid-leukemia-a-rare-case
#3
Duygu Mert, Gülşen Iskender, Fazilet Duygu, Alparslan Merdin, Sinan Dal Mehmet, Mehmet Dogan, Emre Tekgündüz, Mustafa Ertek, Fevzi Altuntaş
Invasive pulmonary aspergillosis is most commonly seen in immunocompromised patients. Besides, skin lesions may also develop due to invasive aspergillosis in those patients. A 49-year-old male patient was diagnosed with acute myeloid leukemia. The patient developed bullous and zosteriform lesions on the skin after the 21st day of hospitalization. The skin biopsy showed hyphae. Disseminated skin aspergillosis was diagnosed to the patient. Voricanazole treatment was initiated. The patient was discharged once the lesions started to disappear...
June 1, 2017: Hematology Reports
https://www.readbyqxmd.com/read/28619957/chronic-pulmonary-aspergillosis-complicating-sarcoidosis
#4
Yurdagül Uzunhan, Hilario Nunes, Florence Jeny, Maxime Lacroix, Sophie Brun, Pierre-Yves Brillet, Emmanuel Martinod, Marie-France Carette, Diane Bouvry, Caroline Charlier, Fanny Lanternier, Carole Planès, Abdellatif Tazi, Olivier Lortholary, Robert P Baughman, Dominique Valeyre
Chronic pulmonary aspergillosis (CPA) complicating sarcoidosis (SA) is associated with high mortality, and there is a lack of clarity regarding the relative contributions of SA or CPA.This was a retrospective single-centre study on CPA-SA.In total, 65 patients (44 men), aged 41.4±13.5 and 48.3±11.9 years at the time of SA and CPA diagnoses, respectively, were included between 1980 and 2015. Of these, 64 had fibrocystic SA, most often advanced, with composite physiological index (CPI) >40 (65% of patients) and pulmonary hypertension (PH) (31%), and 41 patients (63%) were treated for SA (corticosteroids or immunosuppressive drugs)...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28619951/erj-june-podcast-chronic-pulmonary-aspergillosis-complicating-sarcoidosis
#5
(no author information available yet)
No abstract text is available yet for this article.
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28609608/voriconazole-concentrations-in-plasma-and-epithelial-lining-fluid-after-inhalation-and-oral-treatment
#6
Charlotte U Andersen, Lene Dahl Sønderskov, Elisabeth Bendstrup, Nina Voldby, Lindsey Cass, John Ayrton, Ole Hilberg
Adverse effects can compromise oral voriconazole treatment of pulmonary aspergillosis. Inhaled low-dose voriconazole may be an alternative treatment. In this study, six patients inhaled 40 mg voriconazole b.i.d. for two days, and six patients ingested 400 and 200 mg orally b.i.d. on day one and two, respectively. Blood samples were collected after the first inhalation, and bronchial alveolar lavage fluids and blood samples were collected for measurements of voriconazole 12 hr after the last administration. The concentration of voriconazole in epithelial lining fluid (ELF) was calculated by the urea dilution method...
June 13, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28601021/aspergillus-fumigatus-induced-early-inflammatory-response-in-pulmonary-microvascular-endothelial-cells-role-of-p38-mapk-and-inhibition-by-silibinin
#7
Jun Song, Weihua Pan, Yue Sun, Jing Han, Weimin Shi, Wanqing Liao
Human invasive pulmonary aspergillosis (IPA) is a serious infectious disease mainly caused by Aspergillus fumigatus (A. fumigatus). Pulmonary microvascular endothelial cells (PMVECs) are important ones in the human lung tissue. However, it remains unclear about the role of PMVECs in IPA. In the present study, we cocultured PMVECs with A. fumigatus. We observed that A. fumigatus induced dose- and time-dependent increases of interleukin 6 (IL-6), interleukin 1β (IL-1β) and intercellular adhesion molecule 1 (ICAM-1) concentration in the cultures...
June 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28595486/special-considerations-for-the-diagnosis-and-treatment-of-invasive-pulmonary-aspergillosis
#8
Matthew William McCarthy, Thomas J Walsh
The diagnosis and treatment of invasive pulmonary aspergillosis (IPA) are ongoing challenges in clinical practice. While important advances have recently been made, including enhanced diagnostic modalities as well as novel therapeutic and prophylactic options, more effective options are urgently needed as the population of immunocompromised patients continues to expand. Areas covered: In this paper, we review novel approaches to diagnosis of IPA, including multiplex PCR, Matrix Assisted Laser Desorption/Ionization-Time of Flight Mass Spectrometry and provide a detailed review of the extended-spectrum triazole isavuconazole, which was approved in 2015 to treat IPA...
June 21, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28594271/treatment-of-cyclosporin-a-retains-host-defense-against-invasive-pulmonary-aspergillosis-in-a-non-immunosuppressive-murine-model-by-preserving-the-myeloid-cell-population
#9
Sarah Sze Wah Wong, Orhan Rasid, Paris Laskaris, Arnaud Fekkar, Jean-Marc Cavaillon, William J Steinbach, Oumaima Ibrahim-Granet
Cyclosporin A (CsA) is widely used as an immunosuppressive agent for organ transplant recipients. CsA inhibits calcineurin, which is highly conserved in mammals and fungi, and thus affects both types of organism. In mammals, the immunosuppressive effect of CsA is via hampering T cell activation. In fungi, the growth inhibitory effect of CsA is via interference with hyphal growth. The aim of this study was to determine whether CsA renders mice susceptible to invasive pulmonary aspergillosis (IPA) and whether it can protect immunosuppressed mice from infection...
June 8, 2017: Virulence
https://www.readbyqxmd.com/read/28584997/cd4-t-cells-mediate-aspergillosis-vaccine-protection
#10
Diana Diaz-Arevalo, Markus Kalkum
Adaptive effector CD4(+) T cells play essential roles in the defense against fungal infections, especially against invasive aspergillosis (IA). Such protective CD4(+) T cells can be generated through immunization with specialized antifungal vaccines, as has been demonstrated for pulmonary Aspergillus fumigatus infections in mouse experiments. Adaptive transfer of fungal antigen-specific CD4(+) T cells conferred protection onto non-immunized naive mice, an experimental approach that could potentially become a future treatment option for immunosuppressed IA patients, focusing on the ultimate goal to improve their otherwise dim chances for survival...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584996/endpoint-assessment-in-rabbit-models-of-invasive-pulmonary-aspergillosis-and-mucormycosis
#11
Vidmantas Petraitis, Ruta Petraitiene, William W Hope, Thomas J Walsh
Multiple animal models have been developed to study the pathogenesis of invasive pulmonary aspergillosis, as well as to evaluate the efficacy, pharmacokinetics, and pharmacodynamics of various antifungal agents and vaccines. Each model is beneficial depending on the questions that are asked. In this chapter, we will discuss the endpoints assessment of the persistently neutropenic rabbit models of invasive pulmonary aspergillosis and invasive pulmonary mucormycosis.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28571192/youngest-case-of-allergic-broncho-pulmonary-aspergillosis-in-india-a-case-report-from-arid-zone-of-india
#12
Navgeet Mathur, Medha Mathur, Virendra Singh
Allergic Broncho Pulmonary Aspergillosis (ABPA) is an immunological allergic disorder and asthmatic patients are predisposed to ABPA. Although, ABPA commonly develops in the third and fourth decades but no age group is unaffected from the disease. Youngest case of ABPA in India so far reported was four years of age. This case report is about a young child of bronchial asthma with ABPA aged four years and nine days only, from arid zone of country. Her diagnosis of ABPA was supported by clinical, serological and radiological findings...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28566368/caspofungin-increases-fungal-chitin-and-eosinophil-and-%C3%AE-%C3%AE-t-cell-dependent-pathology-in-invasive-aspergillosis
#13
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/28560131/fatal-invasive-aspergillosis-caused-by-aspergillus-niger-after-bilateral-lung-transplantation
#14
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/28552326/ibrutinib-in-pcnsl-the-curious-cases-of-clinical-responses-and-aspergillosis
#15
Christian Grommes, Anas Younes
In this issue of Cancer Cell, Lionakis et al. demonstrate that the combination of temozolomide, etoposide, doxorubicin, dexamethasone, rituximab, and the Bruton tyrosine kinase (BTK) inhibitor ibrutinib induced frequent responses in patients with primary central nervous system lymphoma but was associated with significant toxicity, including pulmonary and cerebral aspergillosis infections.
June 12, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28546015/allergic-bronchopulmonary-aspergillosis-in-japan-a-nationwide-survey
#16
Tsuyoshi Oguma, Masami Taniguchi, Terufumi Shimoda, Katsuhiko Kamei, Hiroto Matsuse, Akira Hebisawa, Noboru Takayanagi, Satoshi Konno, Koichi Fukunaga, Kazuki Harada, Jun Tanaka, Katsuyoshi Tomomatsu, Koichiro Asano
BACKGROUND: Allergic bronchopulmonary aspergillosis (ABPA) is an allergic pulmonary disease characterized by a hypersensitivity reaction to Aspergillus species colonizing the airways. The clinical characteristics of ABPA may differ depending on genetic and environmental background. We performed a nationwide survey to determine the clinical characteristics of ABPA in Japan. METHODS: In 2013, a questionnaire on physician-diagnosed ABPA/allergic bronchopulmonary mycosis was sent to 903 medical centers specializing in respiratory or allergic diseases...
May 23, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28545901/management-of-aspergillus-pleural-empyema-with-combined-systemic-and-intrapleural-antifungal-therapy-in-a-pediatric-patient-case-report
#17
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/28545828/effectiveness-of-environmental-control-measures-to%C3%A2-decrease-the-risk-of-invasive-aspergillosis-in-acute-leukaemia-patients-during-hospital-building-work
#18
J F Combariza, L F Toro, J J Orozco
BACKGROUND: Invasive aspergillosis (IA) is a significant problem in acute leukaemia patients. Construction work near hospital wards caring for immunocompromised patients is one of the main risk factors for developing invasive pulmonary aspergillosis (IPA). AIM: To assess the impact of environmental control measures used during hospital construction for the prevention of IA in acute leukaemia patients. METHODS: A retrospective cohort study was developed to evaluate the IA incidence in acute leukaemia patients with different environmental control measures employed during hospital construction...
May 5, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28539863/pulmonary-aspergillosis-as-opportunistic-mycoses-in-a-cohort-of-human-immunodeficiency-virus-infected-patients-report-from-a-tertiary-care-hospital-in-north-india
#19
Ravinder Kaur, Bhanu Mehra, Megh Singh Dhakad, Ritu Goyal, Richa Dewan
OBJECTIVE: The incidence of pulmonary aspergillosis in human immunodeficiency virus (HIV)-infected persons is rising. This study was designed to determine the prevalence of pulmonary aspergillosis in a cohort of HIV-positive patients (n = 71) presenting with lower respiratory tract infection at a tertiary care medical center in India. METHODS: Sputum samples were collected, and potassium hydroxide mount, cultural characteristics, and lactophenol cotton blue preparations were employed to aid in the identification of Aspergillus species...
April 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28526521/coexistence-of-aspergilloma-and-pulmonary-hydatid-cyst-in-an-immunocompetent-individual
#20
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
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