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https://www.readbyqxmd.com/read/28449484/clinical-presentation-and-characteristics-of-25-adult-cases-of-pulmonary-sequestration
#1
Mateusz Polaczek, Inga Baranska, Malgorzata Szolkowska, Jacek Zych, Piotr Rudzinski, Janusz Szopinski, Tadeusz Orlowski, Kazimierz Roszkowski-Sliz
BACKGROUND: Pulmonary sequestration (PS) is a rare congenital abnormality of lung tissue. Only few series of adult cases are reported. The aim was to describe clinical characteristics in adult cases of PS and to compare outcomes in different clinical situations. METHODS: Using MSD engine we searched for cases of PS that have been diagnosed between Jan 1st, 2005 and Dec 31st, 2015. Clinical data was retrospectively gathered. Statistica v.12 (StatSoft, Inc.) was used for statistical analyses...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28442603/aspergillus-fumigatus-trehalose-regulatory-subunit-homolog-moonlights-to-mediate-cell-wall-homeostasis-through-modulation-of-chitin-synthase-activity
#2
Arsa Thammahong, Alayna K Caffrey-Card, Sourabh Dhingra, Joshua J Obar, Robert A Cramer
Trehalose biosynthesis is found in fungi but not humans. Proteins involved in trehalose biosynthesis are essential for fungal pathogen virulence in humans and plants through multiple mechanisms. Loss of canonical trehalose biosynthesis genes in the human pathogen Aspergillus fumigatus significantly alters cell wall structure and integrity, though the mechanistic link between these virulence-associated pathways remains enigmatic. Here we characterize genes, called tslA and tslB, which encode proteins that contain domains similar to those corresponding to trehalose-6-phosphate phosphatase but lack critical catalytic residues for phosphatase activity...
April 25, 2017: MBio
https://www.readbyqxmd.com/read/28438973/pulmonary-il-17-lymphocytes-increase-during-pneumocystis-murina-infection-but-are-not-required-for-clearance-of-pneumocystis
#3
Chiara Ripamonti, Lisa R Bishop, Joseph A Kovacs
Pneumocystis remains an important pathogen of immunosuppressed patients, causing a potentially life-threatening pneumonia. Despite its medical importance, the immune responses required to control infection, including the role of IL-17, which is important in controlling other fungal infections, have not been clearly defined. Using flow cytometry and intracellular cytokine staining following stimulation with PMA and ionomycin, we examined interferon-γ, IL-4, IL-5, and IL-17 production by lung lymphocytes in immunocompetent C57BL/6 mice over time following infection with P...
April 24, 2017: Infection and Immunity
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
#4
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/28423062/filamentous-fungal-carbon-catabolite-repression-supports-metabolic-plasticity-and-stress-responses-essential-for-disease-progression
#5
Sarah R Beattie, Kenneth M K Mark, Arsa Thammahong, Laure Nicolas Annick Ries, Sourabh Dhingra, Alayna K Caffrey-Carr, Chao Cheng, Candice C Black, Paul Bowyer, Michael J Bromley, Joshua J Obar, Gustavo H Goldman, Robert A Cramer
Aspergillus fumigatus is responsible for a disproportionate number of invasive mycosis cases relative to other common filamentous fungi. While many fungal factors critical for infection establishment are known, genes essential for disease persistence and progression are ill defined. We propose that fungal factors that promote navigation of the rapidly changing nutrient and structural landscape characteristic of disease progression represent untapped clinically relevant therapeutic targets. To this end, we find that A...
April 19, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28422065/detection-of-1-3-%C3%AE-d-glucan-for-the-diagnosis-of-invasive-fungal-infection-in-liver-transplant-recipients
#6
Eric Levesque, Fadi Rizk, Zaid Noorah, Nawel Aït-Ammar, Catherine Cordonnier-Jourdin, Sarra El Anbassi, Christine Bonnal, Daniel Azoulay, Jean-Claude Merle, Françoise Botterel
Invasive fungal infections (IFI) are complications after liver transplantation involving high morbidity and mortality. (1,3)-β-d-glucan (BG) is a biomarker for IFI, but its utility remains uncertain. This study was designed to evaluate the impact of BG following their diagnosis. Between January 2013 and May 2016, 271 liver transplants were performed in our institution. Serum samples were tested for BG (Fungitell(®), Associates Cape Code Inc., Falmouth, MA, USA) at least weekly between liver transplantation and the discharge of patients...
April 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28410611/recurrent-scedosporium-apiospermum-mycetoma-successfully-treated-by-surgical-excision-and-terbinafine-treatment-a-case-report-and-review-of-the-literature
#7
Eszter J Tóth, Géza R Nagy, Mónika Homa, Marianna Ábrók, Ildikó É Kiss, Gábor Nagy, Zsuzsanna Bata-Csörgő, Lajos Kemény, Edit Urbán, Csaba Vágvölgyi, Tamás Papp
BACKGROUND: Scedosporium apiospermum is an emerging opportunistic filamentous fungus, which is notorious for its high levels of antifungal-resistance. It is able to cause localized cutaneous or subcutaneous infections in both immunocompromised and immunocompetent persons, pulmonary infections in patients with predisposing pulmonary diseases and invasive mycoses in immunocompromised patients. Subcutaneous infections caused by this fungus frequently show chronic mycetomatous manifestation...
April 14, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28409126/genomics-and-comparative-genomic-analyses-provide-insight-into-the-taxonomy-and-pathogenic-potential-of-novel-emmonsia-pathogens
#8
COMPARATIVE STUDY
Ying Yang, Qiang Ye, Kang Li, Zongwei Li, Xiaochen Bo, Zhen Li, Yingchun Xu, Shengqi Wang, Peng Wang, Huipeng Chen, Junzhi Wang
Over the last 50 years, newly described species of Emmonsia-like fungi have been implicated globally as sources of systemic human mycosis (emmonsiosis). Their ability to convert into yeast-like cells capable of replication and extra-pulmonary dissemination during the course of infection differentiates them from classical Emmonsia species. Immunocompromised patients are at highest risk of emmonsiosis and exhibit high mortality rates. In order to investigate the molecular basis for pathogenicity of the newly described Emmonsia species, genomic sequencing and comparative genomic analyses of Emmonsia sp...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28400772/sphingolipids-are-dual-specific-drug-targets-for-the-management-of-pulmonary-infections-perspective
#9
REVIEW
Lalita Sharma, Hridayesh Prakash
Sphingolipids are the major constituent of the mucus secreted by the cells of epithelial linings of lungs where they maintain the barrier functions and prevent microbial invasion. Sphingolipids are interconvertible, and their primary and secondary metabolites have both structural and functional roles. Out of several sphingolipid metabolites, sphingosine-1 phosphate (S1P) and ceramide are central molecules and decisive for sphingolipid signaling. These are produced by enzymatic activity of sphingosine kinase-1 (SK-1) upon the challenge with either biological or physiological stresses...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28400116/the-role-of-infection-in-interstitial-lung-diseases-a-review
#10
REVIEW
Natalya Azadeh, Andrew H Limper, Eva M Carmona, Jay H Ryu
Interstitial lung diseases (ILD) comprise an array of heterogeneous parenchymal lung diseases that are associated with a spectrum of pathologic, radiologic and clinical manifestations. There are ILDs with known etiologies and those that are idiopathic, making treatment strategies challenging. Prognosis can vary according to the type of ILD but many exhibit gradual progression with an unpredictable clinical course in individual patients as seen in idiopathic pulmonary fibrosis and the phenomenon of "acute exacerbation"(AE)...
April 8, 2017: Chest
https://www.readbyqxmd.com/read/28380270/oral-ulcers-associated-with-bone-destruction-as-the-primary-manifestation-of-histoplasmosis-in-an-immunocompetent-patient
#11
J A Figueira, D J Camilo, É R Biasoli, G I Miyahara, D G Bernabé
Histoplasmosis is a systemic fungal infection caused by Histoplasmacapsulatum, a saprophyte fungus commonly found in enriched soils with bat and bird droppings.[1] Oral manifestations of histoplasmosis are associated with the disseminated form of the disease, occurring in general associated with pulmonary infection.[2] We report a rare case of oral histoplasmosis with periodontal bone destruction in an immunocompetent patient without underlying pulmonary disease. This article is protected by copyright. All rights reserved...
April 5, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28379569/one-health-pathogens-in-the-aspergillus-viridinutans-complex
#12
Jessica J Talbot, Vanessa R Barrs
Cryptic species in Aspergillus section Fumigati are increasingly recognised as pathogens in humans and animals. The A. viridinutans complex (AVC) has recently expanded to comprise 10 species, of which six are known to be pathogenic, including A. udagawae, A. felis, A. pseudofelis, A. parafelis, A. pseudoviridinutans, and A. wyomingensis. They cause locally invasive and disseminated invasive disease syndromes, including chronic pulmonary aspergillosis and invasive aspergillosis in humans, invasive fungal rhinosinusitis in cats, and disseminated invasive aspergillosis in dogs...
March 31, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28360470/pulmonary-mucormycosis-diagnosed-by-convex-probe-endobronchial-ultrasound-guided-fine-needle-aspiration-of-cavity-wall
#13
Vidya Nair, Rahul Kumar Sharma, Arjun Khanna, Deepak Talwar
Pulmonary mucormycosis is an opportunistic fungal infection in immunocompromised individuals. It is difficult to diagnose as it requires tissue biopsy, and generally these patients are unfit to undergo invasive lung biopsies. We describe a novel technique in a case with uncontrolled diabetes mellitus with nonresolving pulmonary cavitary disease where convex probe endobronchial ultrasound (EBUS)-guided aspiration of lung cavity wall showed classical histopathological picture establishing the diagnosis of mucorale infection...
March 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28355561/pneumocystis-driven-inducible-bronchus-associated-lymphoid-tissue-formation-requires-th2-and-th17-immunity
#14
Taylor Eddens, Waleed Elsegeiny, Maria de la Luz Garcia-Hernadez, Patricia Castillo, Giraldina Trevejo-Nunez, Katelin Serody, Brian T Campfield, Shabaana A Khader, Kong Chen, Javier Rangel-Moreno, Jay K Kolls
Inducible bronchus-associated lymphoid tissue (iBALT) is an ectopic lymphoid structure composed of highly organized T cell and B cell zones that forms in the lung in response to infectious or inflammatory stimuli. Here, we develop a model for fungal-mediated iBALT formation, using infection with Pneumocystis that induces development of pulmonary lymphoid follicles. Pneumocystis-dependent iBALT structure formation and organization required CXCL13 signaling. Cxcl13 expression was regulated by interleukin (IL)-17 family members, as Il17ra(-/-), Il17rb(-/-), and Il17rc(-/-) mice failed to develop iBALT...
March 28, 2017: Cell Reports
https://www.readbyqxmd.com/read/28351828/high-infection-related-mortality-in-pediatric-acute-myeloid-leukemia-without-preventive-antibiotics-and-antifungals-retrospective-cohort-study-of-a-single-center-from-a-middle-income-country
#15
Emine Zengin, Nazan Sarper, Sema Aylan Gelen, Uğur Demirsoy, Meriban Karadoğan, Suar Çakı Kılıç, Selim Öncel, Emin Sami Arısoy, Devrim Dündar
BACKGROUND: To evaluate infection- related mortality in patients with AML treated without preventive antibiotics and antifungals in a middle-income country. MATERIAL AND METHODS: Infection related mortality was evaluated retrospectively in 49 pediatric patients. RESULTS: A total of 173 chemotherapy courses were administered as first-line chemotherapy. Four patients died in the induction; one patient due to intracranial bleeding, two patients due to typhlitis and one patient due to invasive fungal infection with pulmonary vascular invasion and massive bleeding...
March 29, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28349614/progressive-histoplasmosis-with-hemophagocytic-lymphohistiocytosis-and-epithelioid-cell-granulomatosis-a-case-report-and-review-of-the-literature
#16
A B Schulze, B Heptner, T Kessler, B Baumgarten, V Stoica, M Mohr, R Wiewrodt, V Warneke, W Hartmann, J Wüllenweber, C Schülke, M Schäfers, D Wilmes, K Becker, L H Schmidt, A H Groll, W E Berdel
Histoplasmosis in central Europe is a rare fungal disease with diverse clinical presentations. Apart from acute pulmonary histoplasmosis and involvement of the central nervous system, the most serious clinical presentation is progressive disseminated histoplasmosis which is generally associated with severe immunodeficiency and in particular, advanced HIV-infection. Here we report on an immunocompetent female residing in a non-endemic area, presenting with progressive disseminated histoplasmosis after a remote travel history to Thailand and Costa Rica...
March 27, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28346123/panfungal-polymerase-chain-reaction-for-identification-of-fungal-pathogens-in-formalin-fixed-animal-tissues
#17
Courtney Meason-Smith, Erin E Edwards, Caitlin E Older, Mackenzie Branco, Laura K Bryan, Sara D Lawhon, Jan S Suchodolski, Gabriel Gomez, Joanne Mansell, Aline Rodrigues Hoffmann
Identification of fungal organisms often poses a problem for pathologists because the histomorphology of some fungal organisms is not specific, fresh tissues may not be available, and isolation and identification in culture may take a long time. The purpose of this study was to validate the use of panfungal polymerase chain reaction (PCR) to identify fungal organisms from formalin-fixed paraffin-embedded (FFPE) tissues. Formalin-fixed paraffin-embedded curls were tested from 128 blocks containing canine, feline, equine, and bovine tissues with cutaneous, nasal, pulmonary, and systemic fungal infections, identified by the presence of fungi in histologic sections...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28343883/-disseminated-actinomycosis-treated-with-clindamycin
#18
S Bouttefroy, C Faure Conter, A Tristan, F Valour, T Perpoint, P Reix, P Thiesse, F Dijoud, G Catho
Actinomycosis is a rare bacterial disease caused by Actinomyces spp., an anaerobic bacteria from the oropharynx, digestive, and female genital tracts. Initial clinical presentation often mimics malignancy, which can lead to a delay in diagnosis. Cervico-facial, genitourinary, digestive, and respiratory features are the most frequent. Few cases are reported in children and risk factors are not well known in this population. We report on the case of an 8-year-old boy with disseminated actinomycosis with cervico-facial, pulmonary, and bone involvement caused by Actinomyces israelii...
May 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28321075/management-of-pulmonary-mucormycosis-based-on-a-polymerase-chain-reaction-pcr-diagnosis-in-patients-with-hematologic-malignancies-a-report-of-four-cases
#19
Kazuko Ino, Kazunori Nakase, Akiko Nakamura, Yoshiki Nakamori, Yumiko Sugawara, Kana Miyazaki, Fumihiko Monma, Atsushi Fujieda, Yuka Sugimoto, Kohshi Ohishi, Masahiro Masuya, Naoyuki Katayama
Pulmonary mucormycosis (PM) is a life-threatening fungal infection in patients with hematologic malignancies, and early and accurate diagnostic modalities are urgently needed. We conducted a polymerase chain reaction (PCR) assay targeting these fungi in peripheral blood from four patients with hematologic malignancies who were strongly suspected of having PM. In these four patients, the Rhizopus species was identified in two patients, and the Cunninghamella and Absidia species in one each. Based on these molecular findings, all of the patients were successfully treated via targeted therapy with liposomal amphotericin B...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28301552/radiological-characteristics-of-pulmonary-cryptococcosis-in-hiv-infected-patients
#20
Zhiliang Hu, Jun Chen, Juan Wang, Qingfang Xiong, Yandan Zhong, Yongfeng Yang, Chuanjun Xu, Hongxia Wei
BACKGROUND: Current understanding of human immunodeficiency virus (HIV)-associated pulmonary cryptococcosis (PC) is largely based on studies performed about 2 decades ago which reported that the most common findings on chest radiograph were diffuse interstitial infiltrates. Few studies are available regarding the computed tomography (CT) findings. The aim of this study was to characterize chest CT features of HIV-associated PC. METHODS: HIV patients with cryptococccal infection and pulmonary abnormalities on Chest CT between September 2010 and May 2016 in the Second Affiliated Hospital of the Southeast University were retrospectively analyzed...
2017: PloS One
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