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fungal infection pulmonary

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https://www.readbyqxmd.com/read/28623532/rhizopus-homothallicus-causing-invasive-infections-series-of-three-cases-from-a-single-centre-in-north-india
#1
Prathyusha Kokkayil, Mragnayani Pandey, Reshu Agarwal, Pratibha Kale, Gagandeep Singh, Immaculata Xess
Mucormycoses are opportunistic fungal infections with a high mortality rate. Rhizopus oryzae is the most common agent implicated in human infections. Although R. homothallicus has been previously reported to be a cause of pulmonary mucormycosis, it is the first time that we are reporting as a causative agent of rhino-orbital and cutaneous mucormycosis.
June 16, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28616380/rare-case-of-pulmonary-histoplasmosis-complicated-with-bronchocentric-granulomatosis-in-a-non-endemic-area
#2
Evanthia Botsa, Ioanna Thanou, Stamatina Kabanarou, Loukas Thanos
BACKGROUND: Pulmonary histoplasmosis is a fungal infection caused by histoplasma capsulatum, rarely diagnosed in non endemic areas and/or immunocompromised patients. Complication of pulmonary histoplasmosis with bronchocentric granulomatosis is extremely rare. CASE REPORT: A 48-year-old man with prolonged fever and nausea was admitted to our hospital. Clinical examination revealed pathological auscultatory sounds to the left lung. Computed tomography was performed and revealed a large solid mass of the left upper lobe, limited pleural and pericardial effusion and calcified lymphadenopathy of mediastinum...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28615417/t-cell-restricted-notch-signaling-contributes-to-pulmonary-th1-and-th2-immunity-during-cryptococcus-neoformans-infection
#3
Lori M Neal, Yafeng Qiu, Jooho Chung, Enze Xing, Woosung Cho, Antoni N Malachowski, Ashley R Sandy-Sloat, John J Osterholzer, Ivan Maillard, Michal A Olszewski
Cryptococcus neoformans is a ubiquitous, opportunistic fungal pathogen but the cell signaling pathways that drive T cell responses regulating antifungal immunity are incompletely understood. Notch is a key signaling pathway regulating T cell development, and differentiation and functional responses of mature T cells in the periphery. The targeting of Notch signaling within T cells has been proposed as a potential treatment for alloimmune and autoimmune disorders, but it is unknown whether disturbances to T cell immunity may render these patients vulnerable to fungal infections...
June 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28596945/treatment-with-pcramoll-alone-and-in-combination-with-fluconazole-provides-therapeutic-benefits-in-c-gattii-infected-mice
#4
Jannyson J Jandú, Marliete C Costa, Julliana R A Santos, Fernanda M Andrade, Thais F Magalhães, Márcia V Silva, Maria C A B Castro, Luanna C B B Coelho, Aline G Gomes, Tatiane A Paixão, Daniel A Santos, Maria T S Correia
Cryptococcus gattii is one of the main causative agents of cryptococcosis in immunocompetent individuals. Treatment of the infection is based on the use of antimycotics, however, the toxicity of these drugs and the increase of drug-resistant strains have driven the search for more effective and less toxic therapies for cryptococcosis. pCramoll are isolectins purified from seeds of Cratylia mollis, a native forage plant from Brazil, which has become a versatile tool for biomedical application. We evaluated the effect of pCramoll alone and in combination with fluconazole for the treatment of mice infected with C...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28585000/immunization-with-antigen-pulsed-dendritic-cells-against-highly-virulent-cryptococcus-gattii-infection-analysis-of-cytokine-producing-t-cells
#5
Keigo Ueno, Makoto Urai, Shogo Takatsuka, Masahiro Abe, Yoshitsugu Miyazaki, Yuki Kinjo
Cryptococcosis caused by highly virulent Cryptococcus gattii (Hv-Cg) is an emerging infectious disease that affects immunocompetent individuals. The Hv-Cg outbreak began in 1999, but the mechanisms responsible for its hyper-virulence as well as protective immunity against Hv-Cg infection remain to be elucidated. To better understand the protective immunity against Hv-Cg infection, we developed a novel immunization method using antigen-pulsed dendritic cells (DCs). We constructed a capsule-deficient Cg strain (∆cap60) and used it as a vaccine antigen...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584997/cd4-t-cells-mediate-aspergillosis-vaccine-protection
#6
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/28584992/yeast-expressing-gp43-protein-as-a-vaccine-against-paracoccidioides-brasiliensis-infection
#7
Aline Ferreira Oliveira, Paulo S R Coelho
Paracoccidioidomycosis (PCM) represents the most frequent systemic mycosis in Latin American. The disease is caused by the pathogenic thermally dimorphic fungus Paracoccidioides brasiliensis, and is initially characterized by pulmonary lesions, which can subsequently disseminate to other organs, resulting in secondary injuries. Although its high incidence, there is no commercially available vaccine against fungal diseases. A novel strategy, using Saccharomyces cerevisiae yeast as a vehicle for immunization against PCM, was recently successfully described...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584984/intranasal-antifungal-vaccination-using-dna-transfected-dendritic-cells
#8
Shanjana Awasthi
Dendritic cells are the most potent antigen-presenting cells, and are critical for the generation of an antigen-specific immune response and protective immunity. These unique features have been applied to dendritic cell-based immunization in a number of disease conditions. Our published results have demonstrated that the immunity induced by intranasal immunization with DNA-transfected dendritic cells results in reduced fungal burden, and alleviated lung tissue damage in a mouse model of pulmonary fungal infection...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28584982/rational-design-of-t-lymphocyte-epitope-based-vaccines-against-coccidioides-infection
#9
Brady J Hurtgen, Chiung-Yu Hung
Coccidioidomycosis is a potentially life-threatening mycosis endemic to the Southwestern USA and some arid regions of Central and South America. A vaccine against Coccidioides infection would benefit over 30-million people who reside in or visit the endemic regions. Vaccine candidates against systemic fungal infections come in many forms. Live attenuated vaccines are derived from disease-causing pathogens and generally stimulate excellent protective immunity. Since attenuated vaccines contain living microbes, there is a degree of unpredictability raising concerns regarding safety and stability...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28577242/divergence-in-the-approach-to-tumor-necrosis-factor-%C3%AE-inhibitor-recipients-with-coccidioidomycosis
#10
Ashley L Garrett, Stephen S Cha, Elizabeth Wack, Janis E Blair
BACKGROUND: Tumor necrosis factor α-inhibitors (TNFIs) have been associated with increased risk of certain fungal infections, including coccidioidomycosis. The optimal treatment approach to coccidioidomycosis in TNFI recipients is unknown. METHODS: We constructed an anonymous, voluntary survey for practicing pulmonary and infectious disease physicians in the state of Arizona regarding approach to TNFI patients with coccidioidomycosis. RESULTS: There is no current consensus on managing these patients...
June 2, 2017: Infection
https://www.readbyqxmd.com/read/28566368/caspofungin-increases-fungal-chitin-and-eosinophil-and-%C3%AE-%C3%AE-t-cell-dependent-pathology-in-invasive-aspergillosis
#11
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/28555812/lung-resident-%C3%AE-%C3%AE-t-cells-and-their-roles-in-lung-diseases
#12
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/28553043/unusual-case-of-acute-lung-injury-in-a-renal-allograft-recipient
#13
U Anandh, S Marda
A renal allograft recipient developed cough with hemoptysis on the 1(st) postoperative day. A chest X-ray was performed which was suggestive of fluid overload. His fluid was restricted and diuretics were added. On the same day, his pulmonary infiltrates worsened and a computed tomography (CT) of the chest was carried out, which was suggestive of the right lower lobe consolidation and left pleural effusion. He underwent a bronchoscopy and the lavage was sent for cultures, which did not grow any infective organism...
May 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28528008/-role-of-therapeutic-drug-monitoring-in-pulmonary-infections
#14
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/28516246/aspergillus-species-in-bronchiectasis-challenges-in-the-cystic-fibrosis-and-non-cystic-fibrosis-airways
#15
REVIEW
Sanjay H Chotirmall, Maria Teresa Martin-Gomez
Bronchiectasis is a chronic irreversible airway abnormality associated with infectious agents that either cause or superinfect the airways. While the role of bacteria is well studied, much remains to be determined about fungi in both cystic fibrosis- and non-cystic fibrosis-related bronchiectasis. The airway is constantly exposed to inhaled ambient moulds of which Aspergillus represent the most ubiquitous. In a normal healthy host, this situation is of little consequence. The presence of anatomical or immunological abnormalities such as those in bronchiectasis leads to a range of fungal-related pathologies from asymptomatic airway colonization to fungal sensitization, allergic bronchopulmonary aspergillosis or chronic pulmonary aspergillosis...
May 17, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28508096/-off-label-biologic-therapy-of-anca-associated-and-non-anca-associated-small-vessel-vasculitis-efficacy-and-safety-analysis-of-a-national-registry-graid2
#16
N Venhoff, F Proft, H Schulze-Koops, J Holle, R E Voll, C Iking-Konert, A M Jacobi, J Henes, L Unger, O Kneitz, T Dörner, J Thiel
OBJECTIVE: To evaluate the clinical efficacy and safety of off-label biological therapies in patients with ANCA-associated vasculitis (AAV) and non-ANCA-associated small-vessel vasculitis (nAAV) in clinical practice. METHODS: The German Registry in Autoimmune Diseases 2 (GRAID2) is a national, retrospective, non-interventional, multicentre observational study (August 2006 until December 2013) on patients with autoimmune diseases refractory to standard immunosuppressive therapy treated with off-label biologicals...
May 15, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28493896/candidemia-in-the-elderly-what-does-it-change
#17
Francesco Barchiesi, Elena Orsetti, Sara Mazzanti, Francesca Trave, Aldo Salvi, Cinzia Nitti, Esther Manso
BACKGROUND: Candidemia is a life-threatening fungal infection and it can affect patients of all ages. Characterization of candidemia in the elderly is lacking. METHODS: We performed a retrospective study of adults (≥ 18 years) with candidemia diagnosed in our center in 2010-2015. Demographics, comorbidities, clinical and microbiologic characteristics, antifungal treatment and outcome were compared between older (≤65 years) and younger (>65 years) patients...
2017: PloS One
https://www.readbyqxmd.com/read/28487045/pentraxin-3-levels-in-bronchoalveolar-lavage-fluid-of-lung-transplant-recipients-with-invasive-aspergillosis
#18
Dima Kabbani, Archana Bhaskaran, Lianne G Singer, Alyajahan Bhimji, Coleman Rotstein, Shaf Keshavjee, W Conrad Liles, Shahid Husain
BACKGROUND: Invasive aspergillosis is the most common invasive fungal infection in lung transplant recipients. The use of galactomannan testing in bronchoalveolar lavage (BAL) fluid has improved diagnosis of invasive aspergillosis; however, false-positive results can lead to overdiagnosis and unnecessary treatment. The use of proinflammatory markers such as pentraxin 3 (PTX3) may help differentiate between Aspergillus colonization and disease. METHODS: BAL PTX3 concentrations were measured by enzyme-linked immunosorbent assay in 151 lung transplant recipients and 9 healthy control subjects...
April 19, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28462080/a-case-of-pulmonary-actinomycosis-diagnosed-by-transbronchial-lung-biopsy
#19
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/28458494/rhinocerebral-mucormycosis-report-of-a-rare-case
#20
Richa Sahota, Ramandeep Gambhir, Samir Anand, Avani Dixit
BACKGROUND: Mucormycosis is one of the rapidly progressing and lethal form of fungal infection which involves the nose and paranasal sinuses of the head and the neck regions. Mucormycosis also remains a threat to patients with uncontrolled diabetes or other predisposing systemic conditions. It manifests as rhinocerebral, pulmonary, gastrointestinal, cutaneous or disseminated form. The underlying conditions can influence clinical presentation and often delay diagnosis, with resultant poor outcomes...
January 2017: Ethiopian Journal of Health Sciences
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