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Respiratory Fungal infection

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https://www.readbyqxmd.com/read/28644565/long-term-risk-of-infection-in-patients-with-crohn-s-disease-on-anti-tnf-treatment-a-prospective-single-center-cohort-study-in-china
#1
Yue Li, Hui Jun Shu, Hong Lu, Hong Yang, Ji Li, Bei Tan, Jiaming Qian
BACKGROUND: Anti-TNF agents have demonstrated to greatly improve management strategies for inflammatory bowel disease (IBD). Clinical trials and registry studies in Western countries have shown that infections and malignancy are the most concerned complications of anti-TNF treatment. However, data derived from clinical practice in China are limited. The aim of this study is to explore the long-term infection risk of infliximab (IFX) in treating patients with Crohn's disease (CD) from a tertiary IBD center in China...
June 23, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28639066/enzymatic-mechanisms-involved-in-evasion-of-fungi-to-the-oxidative-stress-focus-on-scedosporium-apiospermum
#2
C Staerck, P Vandeputte, A Gastebois, A Calenda, S Giraud, N Papon, J P Bouchara, M J J Fleury
The airways of patients with cystic fibrosis (CF) are frequently colonized by various filamentous fungi, mainly Aspergillus fumigatus and Scedosporium species. To establish within the respiratory tract and cause an infection, these opportunistic fungi express pathogenic factors allowing adherence to the host tissues, uptake of extracellular iron, or evasion to the host immune response. During the colonization process, inhaled conidia and the subsequent hyphae are exposed to reactive oxygen species (ROS) and reactive nitrogen species (RNS) released by phagocytic cells, which cause in the fungal cells an oxidative stress and a nitrosative stress, respectively...
June 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28602386/respiratory-infections-associated-with-anti-tnf%C3%AE-agents
#3
REVIEW
E Blanchard, M-E Truchetet, I Machelart, J Séneschal, C Raherison-Semjen
Anti-TNFα agents have proved effective in the treatment of various inflammatory, rheumatologic, dermatologic, and gastrointestinal diseases. Severe respiratory tract infections of bacterial or fungal origin have emerged as important complications in patients receiving such treatments. The risk of infection due to anti-TNFα therapy is difficult to assess in these patients who are immunocompromised because of the underlying disease itself and of previous or concomitant immunosuppressive drugs. This excessive infection risk seems real, particularly in the first six months following treatment initiation, and higher for patients receiving anti-TNFα monoclonal antibodies than for those receiving soluble TNFα receptor...
June 8, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28589247/challenges-in-laboratory-detection-of-fungal-pathogens-in-the-airways-of-cystic-fibrosis-patients
#4
Sharon C-A Chen, Wieland Meyer, Catherine H Pashley
Study of the clinical significance of fungal colonization/infection in the airways of cystic fibrosis (CF) patients, especially by filamentous fungi, is challenged by the absence of standardized methodology for the detection and identification of an ever-broadening range of fungal pathogens. Culture-based methods remain the cornerstone diagnostic approaches, but current methods used in many clinical laboratories are insensitive and unstandardized, rendering comparative studies unfeasible. Guidelines for standardized processing of respiratory specimens and for their culture are urgently needed and should include recommendations for specific processing procedures, inoculum density, culture media, incubation temperature and duration of culture...
June 6, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28576330/first-report-of-two-cases-of-cryptococcosis-in-tripoli-libya-infected-with-cryptococcus-neoformans-isolates-present-in-the-urban-area
#5
M S Ellabib, Z A Krema, A A Allafi, M Cogliati
Cryptococcosis is a potentially fatal fungal disease caused by the basidiomycetes yeasts Cryptococcus neoformans and C. gattii with high predilection to invade the central nervous system mainly in immunocompromised hosts. Skin can be secondarily involved in disseminated infection or be exceptionally involved as primary cutaneous infection by inoculation with contaminated materials. We report the first two Libyan cases of cryptococcal meningitis in HIV patients, in which one of them presented a secondary cutaneous involvement due to systemic dissemination...
May 30, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28573322/plasmonic-gold-nanoparticles-for-detection-of-fungi-and-human-cutaneous-fungal-infections
#6
Tobiloba Sojinrin, João Conde, Kangze Liu, James Curtin, Hugh J Byrne, Daxiang Cui, Furong Tian
Fungi, which are common in the environment, can cause a multitude of diseases. Warm, humid conditions allow fungi to grow and infect humans via the respiratory, digestive and reproductive tracts, genital area and other bodily interfaces. Fungi can be detected directly by microscopy, using the potassium hydroxide test, which is the gold standard and most popular method for fungal screening. However, this test requires trained personnel operating specialist equipment, including a fluorescent microscope and culture facilities...
June 2, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28555812/lung-resident-%C3%AE-%C3%AE-t-cells-and-their-roles-in-lung-diseases
#7
REVIEW
Min Cheng, Shilian Hu
γδ T cells are greatly enriched in mucosal and epithelial sites, such as the skin, respiratory, digestive and reproductive tracts, and they are defined as tissue-resident immune cells. In these tissues, the characteristics and biological roles of γδ T cells are distinguished from each other. The lungs represent the most challenging immunological dilemma for the host, and they have their own effective immune system. The abundance of γδ T cells, an estimated 8-20% of resident pulmonary lymphocytes in the lung, maintains lung tissue homeostasis...
May 29, 2017: Immunology
https://www.readbyqxmd.com/read/28531183/a-scoping-review-on-bio-aerosols-in-healthcare-and-the-dental-environment
#8
Charifa Zemouri, Hans de Soet, Wim Crielaard, Alexa Laheij
BACKGROUND: Bio-aerosols originate from different sources and their potentially pathogenic nature may form a hazard to healthcare workers and patients. So far no extensive review on existing evidence regarding bio-aerosols is available. OBJECTIVES: This study aimed to review evidence on bio-aerosols in healthcare and the dental setting. The objectives were 1) What are the sources that generate bio-aerosols?; 2) What is the microbial load and composition of bio-aerosols and how were they measured?; and 3) What is the hazard posed by pathogenic micro-organisms transported via the aerosol route of transmission? METHODS: Systematic scoping review design...
2017: PloS One
https://www.readbyqxmd.com/read/28528008/-role-of-therapeutic-drug-monitoring-in-pulmonary-infections
#9
REVIEW
C Padoin
Pulmonary infections are common and caused by a wide range of viruses, bacteria, parasites and fungi. They consist of lower respiratory tract infections with community and hospital acquired acute pneumonia, bronchitis, lung abscess, fungal infections and tuberculosis. The management of these infections should be based on guidelines that take into account the microorganisms most frequently involved as a basis for empirical treatment, with identification of causative microorganisms allowing targeted treatments...
May 17, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28526018/infection-mediated-asthma-etiology-mechanisms-and-treatment-options-with-focus-on-chlamydia-pneumoniae-and-macrolides
#10
REVIEW
Wilmore C Webley, David L Hahn
Asthma is a chronic respiratory disease characterized by reversible airway obstruction and airway hyperresponsiveness to non-specific bronchoconstriction agonists as the primary underlying pathophysiology. The worldwide incidence of asthma has increased dramatically in the last 40 years. According to World Health Organization (WHO) estimates, over 300 million children and adults worldwide currently suffer from this incurable disease and 255,000 die from the disease each year. It is now well accepted that asthma is a heterogeneous syndrome and many clinical subtypes have been described...
May 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28516039/a-plane-screw-fixation-is-a-nidus-for-paecilomyces-sinusitis-in-a-patient-with-aspirin-exacerbated-respiratory-disease
#11
Anthony M Szema, Cyrus Jo
Titanium plane screw fixation of the frontal sinus is an approach used by otolaryngologists to obliterate this space in an attempt to reduce sinus infections. In this case, however, the titanium used became a nidus of infection which cultured the fungus Paecilomyces. The patient also had a hypersensitivity reaction to mold with positive skin tests and IgE, as well as eosinophilic esophagitis. Treatment entailed anti-fungals, anti-IgE, and fungal immunotherapy to multiple fungal antigens prevalent to the geographic region...
2017: IDCases
https://www.readbyqxmd.com/read/28504471/scedosporium-apiospermum-complex-in-cystic-fibrosis-should-we-treat
#12
Maria Noni, Anna Katelari, Aikaterini Kapi, Angeliki Stathi, George Dimopoulos, Stavros-Eleftherios Doudounakis
Species of the Scedosporium apiospermum complex are the second most frequent filamentous fungi after Aspergillus fumigatus that can be found in cystic fibrosis (CF). Mixed colonisation by S. apiospermum complex and A. fumigatus is also quite common. In this study we summarise all CF patients who were colonised by S. apiospermum complex during their childhood and we present two CF patients who were treated as fungal bronchitis due to S. apiospermum complex. The medical records of 400 CF patients were reviewed in order to identify those with positive respiratory cultures for S...
May 15, 2017: Mycoses
https://www.readbyqxmd.com/read/28491889/infections-in-hematopoietic-cell-transplant-recipients-results-from-the-organ-transplant-infection-project-a-multicenter-prospective-cohort-study
#13
Mindy G Schuster, Angela A Cleveland, Erik R Dubberke, Carol A Kauffman, Robin K Avery, Shahid Husain, David L Paterson, Fernanda P Silveira, Tom M Chiller, Kaitlin Benedict, Kathleen Murphy, Peter G Pappas
BACKGROUND: Infection is a major cause of morbidity and mortality after allogeneic hematopoietic cell transplantation (HCT). Our object was to better define the epidemiology and outcomes of infections after HCT. METHODS: This was a prospective, multicenter cohort study of HCT recipients and conducted from 2006 to 2011. The study included 4 US transplant centers and 444 HCT recipients. Data were prospectively collected for up to 30 months after HCT using a standardized data collection tool...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28479692/phenotypic-switch-the-enigmatic-white-gray-opaque-transition-system-of-candida-albicans
#14
REVIEW
Sushma Basavaraj Bommanavar, Sachin Gugwad, Neelima Malik
Candida albicans represents the most common commensal and opportunistic fungal pathogen colonizing humans. As a member of the normal microflora, it is present on the skin and the mucous membranes of the upper respiratory tract, gastrointestinal tract and female genital tracts. It is therefore not transmitted. It lies in wait for a change in some aspect of the host physiology that normally suppress growth and invasiveness through an enigmatic phenomenon called Phenotypic Switch System or White-Opaque Transition...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479007/necrotizing-fasciitis-resulting-in-fatal-lung-aspergillosis-uncommon-pathogenesis-a-case-report
#15
T Mammadli, B-S Kim, H-O Rennekampff, N Pallua
We present a fatal case of Aspergillus-associated lung failure in a patient with necrotizing fasciitis. The cause of the fasciitis was a retroperitoneal perforation of a colon carcinoma. Being already a rare condition, the fasciitis did not manifest as Fournier's gangrene like similar described cases illustrate, but instead travelled along the fasciae and subcutaneous fat tissue cranially into the thoracic cavity, ultimately leading to a disseminated infection of the lungs. The lethal outcome was thus caused by respiratory failure at a time when the primary focus was already successfully treated, contrary to typical cases of necrotizing fasciitis...
May 4, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28462080/a-case-of-pulmonary-actinomycosis-diagnosed-by-transbronchial-lung-biopsy
#16
Saya Nakamura, Masaaki Kusunose, Akira Satou, Kazuyoshi Senda, Yoshinori Hasegawa, Koichi Nishimura
A previously healthy 73-year-old man was hospitalized with left complicated effusion and a consolidation in the left upper lung. He underwent a chest tube insertion and was treated with clindamycin but the consolidation remained after the treatment. We subsequently performed flexible bronchoscopy but it was impossible to make a diagnosis. Three months later, the consolidation had worsened so we performed another bronchoscopy. Finally, we were able to diagnose the consolidation as pulmonary actinomycosis, and to treat the condition appropriately...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28457835/in-vitro-activity-of-a-novel-compound-mul-1867-against-clinically-significant-fungi-candida-spp-and-aspergillus-spp
#17
George Tetz, Michael Cynamon, Gregory Hendricks, Daria Vikina, Victor Tetz
There is an urgent need for new antifungal compounds to treat various types of fungal infections, including pulmonary infections. This study was designed to investigate the potency of a novel compound (Mul-1867) against Candida spp. and Aspergillus spp. isolated from patients with fungal pneumonia, cystic fibrosis and chronic obstructive pulmonary disease. Mul-1867 was highly effective against susceptible control strains as well as resistant clinical isolates, with minimum fungicidal concentrations (MFCs) varying from 0...
April 27, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28431569/co-colonisation-with-aspergillus-fumigatus-and-pseudomonas-aeruginosa-is-associated-with-poorer-health-in-cystic-fibrosis-patients-an-irish-registry-analysis
#18
Emma Reece, Ricardo Segurado, Abaigeal Jackson, Siobhán McClean, Julie Renwick, Peter Greally
BACKGROUND: Pulmonary infection is the main cause of death in cystic fibrosis (CF). Aspergillus fumigatus (AF) and Pseudomonas aeruginosa (PA) are the most prevalent fungal and bacterial pathogens isolated from the CF airway, respectively. Our aim was to determine the effect of different colonisation profiles of AF and PA on the clinical status of patients with CF. METHODS: A retrospective analysis of data from the Cystic Fibrosis Registry of Ireland from 2013 was performed to determine the effect of intermittent and persistent colonisation with AF or PA or co-colonisation with both microorganisms on clinical outcome measures in patients with CF...
April 21, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28428067/targeting-and-synergistic-action-of-an-antifungal-peptide-in-an-antibiotic-drug-delivery-system
#19
Seong-Cheol Park, Young-Min Kim, Jong-Kook Lee, Nam-Hong Kim, Eun-Ji Kim, Hun Heo, Min-Young Lee, Jung Ro Lee, Mi-Kyeong Jang
Amphotericin B (AmB) has been widely used against fungal infections throughout almost the entire body, including the skin, nails, oral cavity, respiratory tract, and urinary tract. However, the development of AmB-loaded nanoparticles demands a novel technique that reduces its toxicity and other associated problems. Here, we developed a pH-responsive and redox-sensitive polymer-based AmB-delivery carrier system. In particular, this system was functionalized by conjugation with the antifungal peptide histatin 5, which acts both as a targeting ligand and a synergistic antifungal molecule against Candida albicans, a major systemic fungal pathogen of humans...
June 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28426102/infection-related-complications-during-treatment-for-childhood-acute-lymphoblastic-leukemia
#20
H Inaba, D Pei, J Wolf, S C Howard, R T Hayden, M Go, O Varechtchouk, T Hahn, J Buaboonnam, M L Metzger, J E Rubnitz, R C Ribeiro, J T Sandlund, S Jeha, C Cheng, W E Evans, M V Relling, C-H Pui
Background: Comprehensive studies on neutropenia and infection-related complications in patients with acute lymphoblastic leukemia (ALL) are lacking. Patients and methods: We evaluated infection-related complications that were grade ≥3 on National Cancer Institute's Common Terminology Criteria for Adverse Events (version 3.0) and their risk factors in 409 children with newly diagnosed ALL throughout the treatment period. Results: Of the 2420 infection episodes, febrile neutropenia and clinically or microbiologically documented infection were seen in 1107 and 1313 episodes, respectively...
February 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
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