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Respiratory Fungal infection

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https://www.readbyqxmd.com/read/28339756/molecular-diagnosis-of-pneumocystis-pneumonia-in-dogs
#1
Patrizia Danesi, Silvia Ravagnan, Lynelle R Johnson, Tommaso Furlanello, Adelaide Milani, Patricia Martin, Susan Boyd, Matthew Best, Bradley Galgut, Peter Irwin, Paul J Canfield, Mark B Krockenberger, Catriona Halliday, Wieland Meyer, Richard Malik
Pneumocystis pneumonia (PCP) is a life-threatening fungal disease that can occur in dogs. The aim of this study was to provide a preliminary genetic characterisation of Pneumocystis carinii f.sp.'canis' (P. canis) in dogs and thereby develop a reliable molecular protocol to definitively diagnose canine PCP. We investigated P. canis in a variety of lung specimens from dogs with confirmed or strongly suspected PCP (Group 1, n = 16), dogs with non-PCP lower respiratory tract problems (Group 2, n = 65) and dogs not suspected of having PCP or other lower respiratory diseases (Group 3, n = 11)...
February 23, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28316109/airway-inflammation-and-symptoms-in-children-following-liver-and-heart-transplantation
#2
Andrew J Redmann, John C Bucuvalas, Robert E Wood, Clifford Chin, Catherine K Hart
OBJECTIVES: Describe the upper airway endoscopic findings of children with upper airway symptoms after liver transplantation (LT) or heart transplantation (HT). METHODS: Review of children undergoing airway endoscopy after LT or HT from 2011 to 2015 at a tertiary care pediatric hospital. Airway findings, biopsy results, immunosuppression and Ebstein Barr virus (EBV) levels were recorded. RESULTS: Twenty-three of 158 LT (111) and HT (47) recipients underwent endoscopy...
March 18, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28295973/cutaneous-phaeohyphomycosis-in-a-hematopoietic-stem-cell-transplant-patient-caused-by-alternaria-rosae-first-case-report
#3
Amy W Liu, Allen C Bateman, Adam Greenbaum, Kanishka Garvin, Jill Clarridge, Jonathan Grim
Alternaria species have been reported as a rare cause of fungal infection in organ and stem cell transplant recipients, but to date no reports have been published of infection in humans caused by Alternaria rosae. Here, we report cutaneous A. rosae infection in a 66-year-old farmer with a history of primary myelofibrosis who had undergone allogeneic unrelated donor hematopoietic stem cell transplantation. Forty-nine days post transplant, he presented with a nodule on the thumb with no findings suggestive of disseminated infection...
March 13, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28289027/efficacy-of-the-investigational-antifungal-vt-1161-in-treating-naturally-occurring-coccidioidomycosis-in-dogs
#4
Lisa F Shubitz, Michael E Roy, Hien T Trinh, William J Hoekstra, Robert J Schotzinger, Edward P Garvey
Coccidioidomycosis can be a chronic, systemic fungal infection requiring long-term to lifetime medication. Thus there is a need for improved antifungal agents with greater efficacy and reduced toxicity. VT-1161 has a low affinity for mammalian cytochromes and potently inhibits fungal CYP51 with proven efficacy in murine models of CNS and respiratory coccidioidomycosis. Dogs experience coccidioidomycosis similar to humans and are a useful preclinical model for naturally occurring disease. Twenty-four client-owned dogs diagnosed with respiratory coccidioidomycosis based on radiography, serology, clinical signs, and clinicopathologic abnormalities were treated with a loading dose of VT-1161 for 14 days followed by 46 days of a lower maintenance dose...
March 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28283567/eosinophils-promote-antiviral-immunity-in-mice-infected-with-influenza-a-virus
#5
Amali E Samarasinghe, Rossana C N Melo, Susu Duan, Kim S LeMessurier, Swantje Liedmann, Sherri L Surman, James J Lee, Julia L Hurwitz, Paul G Thomas, Jonathan A McCullers
Eosinophils are multifunctional cells of the innate immune system linked to allergic inflammation. Asthmatics were more likely to be hospitalized but less likely to suffer severe morbidity and mortality during the 2009 influenza pandemic. These epidemiologic findings were recapitulated in a mouse model of fungal asthma wherein infection during heightened allergic inflammation was protective against influenza A virus (IAV) infection and disease. Our goal was to delineate a mechanism(s) by which allergic asthma may alleviate influenza disease outcome, focused on the hypothesis that pulmonary eosinophilia linked with allergic respiratory disease is able to promote antiviral host defenses against the influenza virus...
March 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28275471/immunity-status-of-invasive-pulmonary-aspergillosis-patients-with-structural-lung-diseases-in-chinese-adults
#6
Shuo Liang, Rong Jiang, Hai-Wen Lu, Bei Mao, Man-Hui Li, Cheng-Wei Li, Shu-Yi Gu, Jiu-Wu Bai, Jin-Fu Xu
BACKGROUND: Invasive pulmonary aspergillosis (IPA) is a fungal infection frequently observed in patients with immune dysfunction, such as those suffering from structural lung diseases. Nevertheless, studies assessing IPA combined with other common respiratory diseases remain scarce, particularly those regarding the immune status of its patients. Different structural lung diseases are known to differently affect patient immune status; however, the mechanisms by which this is conferred have yet to be determined...
February 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28259169/role-of-neuroinflammation-in-neurodegeneration-new-insights
#7
REVIEW
Róisín M McManus, Michael T Heneka
Previously, the contribution of peripheral infection to cognitive decline was largely overlooked however, the past 15 years have established a key role for infectious pathogens in the progression of age-related neurodegeneration. It is now accepted that the immune privilege of the brain is not absolute, and that cells of the central nervous system are sensitive to both the inflammatory events occurring in the periphery and to the infiltration of peripheral immune cells. This is particularly relevant for the progression of Alzheimer's disease, in which it has been demonstrated that patients are more vulnerable to infection-related cognitive changes...
March 4, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28257033/lactoferrin-balancing-ups-and-downs-of-inflammation-due-to-microbial-infections
#8
REVIEW
Maria Elisa Drago-Serrano, Rafael Campos-Rodríguez, Julio César Carrero, Mireya de la Garza
Lactoferrin (Lf) is a glycoprotein of the primary innate immune-defense system of mammals present in milk and other mucosal secretions. This protein of the transferrin family has broad antimicrobial properties by depriving pathogens from iron, or disrupting their plasma membranes through its highly cationic charge. Noteworthy, Lf also exhibits immunomodulatory activities performing up- and down-regulation of innate and adaptive immune cells, contributing to the homeostasis in mucosal surfaces exposed to myriad of microbial agents, such as the gastrointestinal and respiratory tracts...
March 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28220379/pulmonary-mucormycosis-clinical-features-and-outcomes
#9
Erica Lin, Teng Moua, Andrew H Limper
PURPOSE: Mucormycosis encompasses a group of opportunistic fungal infections caused by Zygomycetes, order Mucorales. Mucormycosis can manifest as rhino-orbito-cerebral, pulmonary, gastrointestinal, cutaneous, and disseminated infections. Pulmonary mucormycosis is the second most common presentation. This manuscript characterizes the demographics, clinical presentation, diagnostic procedures, radiologic findings, therapeutic interventions, and outcome in pulmonary mucormycosis. METHODS: We retrospectively reviewed clinical data of 35 patients with pulmonary mucormycosis from 2000 to 2015...
February 20, 2017: Infection
https://www.readbyqxmd.com/read/28211475/biofilm-formation-of-the-black-yeast-like-fungus-exophiala-dermatitidis-and-its-susceptibility-to-antiinfective-agents
#10
Lisa Kirchhoff, Maike Olsowski, Katrin Zilmans, Silke Dittmer, Gerhard Haase, Ludwig Sedlacek, Eike Steinmann, Jan Buer, Peter-Michael Rath, Joerg Steinmann
Various fungi have the ability to colonize surfaces and to form biofilms. Fungal biofilm-associated infections are frequently refractory to targeted treatment because of resistance to antifungal drugs. One fungus that frequently colonises the respiratory tract of cystic fibrosis (CF) patients is the opportunistic black yeast-like fungus Exophiala dermatitidis. We investigated the biofilm-forming ability of E. dermatitidis and its susceptibility to various antiinfective agents and natural compounds. We tested 58 E...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28188493/serious-fungal-infections-in-chile
#11
E Alvarez Duarte, D W Denning
The incidence and prevalence of fungal infections in Chile are unknown. Here, we have estimated the burden of serious fungal diseases from data obtained from clinical reports, WHO reports, Chilean census, OECD reports and comprehensive literature search available on PubMed and SciELO, among other scientific resources. Due the lack of official data about fungal diseases, frequencies were calculated based on the specific populations at risk. Recurrent vulvovaginal candidiasis (>4 episodes/year) is estimated to occur in 3108/100,000...
February 10, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28185887/fatal-disseminated-rasamsonia-infection-in-cystic-fibrosis-post-lung-transplantation
#12
Gina Hong, Marissa White, Noah Lechtzin, Natalie E West, Robin Avery, Heather Miller, Richard Lee, Robert J Lovari, Christian Massire, Lawrence B Blyn, Xinglun Liang, Deanna A Sutton, Jianmin Fu, Brian L Wickes, Nathan P Wiederhold, Sean X Zhang
BACKGROUND: Disseminated fungal infections are a known serious complication in individuals with cystic fibrosis (CF) following orthotopic lung transplantation. Aspergillus fumigatus and Scedosporium species are among the more common causes of invasive fungal infection in this population. However, it is also important for clinicians to be aware of other emerging fungal species which may require markedly different antifungal therapies. CASE SUMMARY: We describe the first laboratory-documented case of a fatal disseminated fungal infection caused by Rasamsonia aegroticola in a 21-year-old female CF patient status post-bilateral lung transplantation, which was only identified post-mortem...
March 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28171733/microsporidiosis-in-four-tortoises-testudo-hermanni-boettgeri
#13
M Eydner, J Donhauser, A Beineke, P Guenther, S Blahak
Microsporidia are obligate intracellular, spore-forming fungi. A wide range of vertebrate and invertebrate hosts can be infected; however, cases of infected turtles or tortoises have not yet been described. This is the first description of 4 cases in tortoises ( Testudo spp), which showed general signs of illness as well as intestinal and respiratory signs until death occurred or they were euthanized. Granulomatous and necrotizing inflammation was visible in the lung and liver. Fungal organisms were present in heart blood, lung, liver, and intestine...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28164439/seasonal-changes-of-lower-respiratory-tract-infections-in-lung-transplant-recipients-during-the-first-post-transplant-year-the-hungarian-experience
#14
Zsuzsanna Kovats, Aniko Bohacs, Zoltan Sutto, Krisztina Vincze, Jozsef Lukacsovits, Gyorgy Losonczy, Veronika Müller
BACKGROUND: After lung transplantation (LuTX) a high level of immunosuppression is needed to prevent rejection of the graft. Together with earlier colonization by pathogens, immunosuppression makes recipients more susceptible to infections, especially during the first postoperative year. As seasonality of lower respiratory tract infections (LRTI) is well known in chronic lung diseases, we assessed seasonal changes of pathogen spectrum and number of infections in the first postoperative year in LuTX recipients...
February 5, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28161741/serious-fungal-infections-in-pakistan
#15
K Jabeen, J Farooqi, S Mirza, D Denning, A Zafar
The true burden of fungal infection in Pakistan is unknown. High-risk populations for fungal infections [tuberculosis (TB), diabetes, chronic respiratory diseases, asthma, cancer, transplant and human immunodeficiency virus (HIV) infection] are numerous. Here, we estimate the burden of fungal infections to highlight their public health significance. Whole and at-risk population estimates were obtained from the WHO (TB), BREATHE study (COPD), UNAIDS (HIV), GLOBOCAN (cancer) and Heartfile (diabetes). Published data from Pakistan reporting fungal infections rates in general and specific populations were reviewed and used when applicable...
February 4, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28155291/mycotic-rhinitis-in-a-mutton-merino-ewe
#16
Rhoda Leask, Johan Steyl
Although nasal masses are uncommon in sheep and may have several causes, including neoplasia and bacterial, fungal and viral infections, these lesions may lead to economic losses resulting from weight loss and even death. It is therefore important to differentiate between various categories of upper respiratory tract obstructions and lower respiratory tract infections. The correct aetiological diagnosis of obstructive masses is essential for appropriate treatment and management to be given or action to be taken...
January 24, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/28101187/severe-pneumonia-due-to-infection-with-candida-krusei-in-a-case-of-suspected-middle-east-respiratory-syndrome-a-case-report-and-literature-review
#17
Mingming Tan, Junwei Wang, Peiyang Hu, Bin Wang, Wanghua Xu, Jiao Chen
Candida krusei (C. krusei) pneumonia is a rare infection that is frequently associated with a poor outcome. The present study reports an unusual case of C. krusei pneumonia that was initially suspected to be a Middle East respiratory syndrome (MERS) case. A 64-year-old Saudi Arabian male patient was admitted to our hospital with complaints of cough and dyspnea that persisted for 6 days. The patient presented fever (oral temperature, 38.5°C) and slight tachypnea (25 respirations/min). A chest computerized tomography demonstrated unclear lung fields, diffuse pathological changes in the two lungs and multiple lymphadenectasis in the retrocaval and para-aortic arch area...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28087464/mitochondrial-reactive-oxygen-species-regulate-fungal-protease-induced-inflammatory-responses
#18
Yun Hee Kim, Seung-Hyo Lee
Epidemiological studies have shown that fungal infections are a main cause of respiratory tract diseases, such as asthma, bronchopneumonia, intoxication, and invasive fungal disease. Fungi such as Aspergillus and Candida species have become increasingly important pathogens as the global climate changes. Accordingly, in this study, we evaluated the toxicological potential of Aspergillus protease in the lower respiratory tract. Exposure of Aspergillus protease to A549 cells induced upregulation of tumor necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, and intercellular adhesion molecule (ICAM)-1 mRNAs and increased production of interleukin (IL)-8 and MCP-1 protein through enhanced mitochondrial reactive oxygen species (ROS) generation and activation of mitogen-activated protein kinase (MAPK) and activator protein (AP)-1...
January 10, 2017: Toxicology
https://www.readbyqxmd.com/read/28045065/high-diversity-of-airborne-fungi-in-the-hospital-environment-as-revealed-by-meta-sequencing-based-microbiome-analysis
#19
Xunliang Tong, Hongtao Xu, Lihui Zou, Meng Cai, Xuefeng Xu, Zuotao Zhao, Fei Xiao, Yanming Li
Invasive fungal infections acquired in the hospital have progressively emerged as an important cause of life-threatening infection. In particular, airborne fungi in hospitals are considered critical pathogens of hospital-associated infections. To identify the causative airborne microorganisms, high-volume air samplers were utilized for collection, and species identification was performed using a culture-based method and DNA sequencing analysis with the Illumina MiSeq and HiSeq 2000 sequencing systems. Few bacteria were grown after cultivation in blood agar...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27998866/-nosocomial-septicemia-in-the-early-stage-after-stem-cell-transplantation-in-children-with-major-%C3%AE-thalassemia
#20
Yan-Jun Xu, Chun-Fu Li, Yue-Lin He, Xiao-Qin Feng, Fu-Yu Pei, Xue-Dong Wu
OBJECTIVE: To explore the clinical characteristics of nosocomial septicemia in the early stage after hematopoietic stem cell transplantation (HSCT) in children with major β-thalassemia. METHODS: The clinical data were retrospectively analyzed of 55 consecutive children with major β-thalassemia who developed septicemia early after HSCT between January, 2011 and June, 2016. RESULTS: Among the total of 416 consecutive children with major β-thalassemia undergoing allogeneic HSCT, the incidence of nosocomial infection early after transplantation was 77...
December 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
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