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https://www.readbyqxmd.com/read/29147593/rapidly-progressive-disseminated-sporotrichosis-as-the-first-presentation-of-hiv-infection-in-a-patient-with-a-very-low-cd4-cell-count
#1
Isis Cristine Morávia Ribeiro de Oliveira-Esteves, Guilherme Almeida Rosa da Silva, Walter de Araujo Eyer-Silva, Rodrigo Panno Basílio-de-Oliveira, Luciana Ferreira de Araujo, Carlos José Martins, Rogério Neves-Motta, Marcelo Costa Velho Mendes de Azevedo, Dario José Hart Pontes Signorini, Jorge Francisco da Cunha Pinto, Lívia Machado Moura, Rafael Jacyntho Laterça, Diogo Raphael Garcia de Oliveira Pereira, Isabela Vieira do Lago, Fernando Raphael de Almeida Ferry
Sporotrichosis is a human and animal disease caused by species of the Sporothrix schenckii complex. It is classically acquired through traumatic inoculation of fungal elements. Most frequently, sporotrichosis presents as a fixed cutaneous or as a lymphocutaneous form. A much smaller number of cases occur as cutaneous disseminated and disseminated forms. These cases require immediate diagnosis and management to reduce morbidity and mortality. We present the case of a 34-year-old male patient in whom the first presentation of HIV infection was a rapidly progressive sporotrichosis with multiple cutaneous lesions, a high fungal burden in tissues, and pulmonary involvement...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/29141316/-a-clinical-analysis-of-micafungin-treatment-of-pulmonary-invasive-fungal-infection-in-pediatric-patients-with-acute-leukemia-or-post-hematopoietic-stem-cells-transplantation
#2
K Huang, K Y Qiu, L L Deng, J P Fang, Y Li, H X Guo, D H Zhou
Objective: To investigate the efficacy and safety of micafungin (MCF) for pulmonary invasive fungal disease (PIFD) in pediatric patients with acute leukemia or post hematopoietic stem cells transplantation. Method: Twenty-five neutropenic PIFD children with acute leukemia or post hematopoietic stem cells transplantation in Sun Yat-sen Memorial Hospital of Sun Yat-sen University were selected from January 2012 to June 2015, including 12 males and 13 females, age range 2-15 (average 6.2±2.0) years. There were 12 cases of acute leukemia (AL) after chemotherapy, 4 cases of acute leukemia (AL) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) and 9 cases of β-thalassemia major after allo-HSCT...
November 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29133871/exploration-of-antifungal-and-immunomodulatory-potentials-of-a-furanone-derivative-to-rescue-disseminated-cryptococosis-in-mice
#3
Sudarshan Singh Rathore, Muthukrishnan Isravel, Sridharan Vellaisamy, David Raj Chellappan, Lalitha Cheepurupalli, Thiagarajan Raman, Jayapradha Ramakrishnan
Cryptococcus neoformans infection is quite complex with both host-pathogen interaction and host immune profile determining disease progress and therapeutic outcome. Hence in the present study, the potential utility of (E)-5-benzylidenedihydrofuran-2(3 H)-one (compound-6) was explored as an effective anticryptococcal compound with immunomodulatory potential. The efficacy of compound-6 in pulmonary cryptococosis model using H99 strain was investigated. The effective dose was found to provide 100% survival, with a significant reduction of yeast burden in lungs and brain...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29128933/proven-invasive-pulmonary-aspergillosis-in-stem-cell-transplant-recipient-due-to-aspergillus-sublatus-a-cryptic-species-of-a-nidulans
#4
Vanda Chrenkova, Vit Hubka, Petr Cetkovsky, Michal Kouba, Barbora Weinbergerova, Pavlina Lyskova, Ludmila Hornofova, Petr Hubacek
Invasive fungal disease represents one of the severe complications in haematopoietic stem cell transplant recipients. We describe a case of a patient treated for relapse of chronic lymphoblastic leukaemia 6 years after HSCT. The patient was treated for invasive pulmonary aspergillosis but died 3 months later from multiple organ failures consisting of haemorrhagic necrotizing fungal pneumonia, refractory chronic hepatic graft versus host disease and cytomegalovirus hepatitis. Autopsy samples revealed histopathological evidence of fungal hyphae and an unusual Aspergillus nidulans-like species was isolated in pure culture...
November 11, 2017: Mycopathologia
https://www.readbyqxmd.com/read/29126660/evaluation-of-the-efficacy-of-a-posaconazole-and-anidulafungin-combination-in-a-murine-model-of-pulmonary-aspergillosis-due-to-infection-with-aspergillus-fumigatus
#5
Laura Bedin Denardi, Francielli Pantella Kunz de Jesus, Jéssica Tairine Keller, Carla Weiblen, Maria Isabel de Azevedo, Vanessa Oliveira, Janio Morais Santurio, Sydney Hartz Alves
Posaconazole (PSC) in combination with anidulafungin (AFG) was evaluated in a murine model of pulmonary aspergillosis. Immunosuppressed animals were infected via the nasal cavity with 2 different A. fumigatus strains. The animals received PSC (oral, 20mg/kg per day) and/or AFG (i.p., 10mg/kg per day) for 7days. On Day 8, the mice were euthanized and fungal burdens were determined from the lungs. Survival curves were constructed for mortality analysis. Compared to untreated groups, groups singly treated with PSC or AFG showed a reduced fungal burden in the lungs (P=0...
October 12, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29126309/a-cpanet-consensus-statement-on-research-priorities-for-chronic-pulmonary-aspergillosis-a-neglected-fungal-infection-that-requires-attention
#6
Cendrine Godet, Ana Alastruey-Izquierdo, Holger Flick, Christophe Hennequin, Rihards Mikilps-Mikgelbs, Oxana Munteanu, Iain Page, Danila Seidel, Helmut J F Salzer
Chronic pulmonary aspergillosis (CPA) is a severe fungal infection with a high morbidity and mortality, and is usually seen in immunocompetent patients with respiratory disorders. Clinical presentation is nonspecific and often overlaps with the symptoms and the radiological pattern caused by the underlying disease. Clinical management of CPA is further hampered by limited information about the epidemiology, disease dynamics, sensitivity and specificity of different mycological tests, mechanisms of antifungal resistance, efficient treatment and management strategies...
November 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29125660/primary-prophylaxis-of-invasive-fungal-infections-with-posaconazole-or-itraconazole-in-patients-with-acute-myeloid-leukemia-or-high-risk-myelodysplastic-syndromes-undergoing-intensive-cytotoxic-chemotherapy-a-real-world-comparison
#7
Mar Tormo, Ariadna Pérez-Martínez, Marisa Calabuig, Juan Carlos Hernández-Boluda, Paula Amat, David Navarro, Carlos Solano
This is an observational-retrospective study comparing the real-world outcomes associated with posaconazole vs. itraconazole as prophylaxis treatments. Two hundred and ninety-three patient admissions attributable to 174 patients were included in the study. Patients were treated with itraconazole (n = 114 admissions; 39%) or posaconazole (n = 179; 61%). Antifungal prophylaxis failure (APF) due to treatment-related adverse events (in 34 out of 293 patient admissions; 11.6%) was more frequent in the posaconazole group (6...
November 10, 2017: Mycoses
https://www.readbyqxmd.com/read/29114024/mechanisms-of-surface-antigenic-variation-in-the-human-pathogenic-fungus-pneumocystis-jirovecii
#8
Emanuel Schmid-Siegert, Sophie Richard, Amanda Luraschi, Konrad Mühlethaler, Marco Pagni, Philippe M Hauser
Microbial pathogens commonly escape the human immune system by varying surface proteins. We investigated the mechanisms used for that purpose by Pneumocystis jirovecii This uncultivable fungus is an obligate pulmonary pathogen that in immunocompromised individuals causes pneumonia, a major life-threatening infection. Long-read PacBio sequencing was used to assemble a core of subtelomeres of a single P. jirovecii strain from a bronchoalveolar lavage fluid specimen from a single patient. A total of 113 genes encoding surface proteins were identified, including 28 pseudogenes...
November 7, 2017: MBio
https://www.readbyqxmd.com/read/29113011/aspergillus-fumigatus-adhesion-factors-in-dormant-conidia-revealed-through-comparative-phenotypic-and-transcriptomic-analyses
#9
Azusa Takahashi-Nakaguchi, Kanae Sakai, Hiroki Takahashi, Daisuke Hagiwara, Takahito Toyotome, Hiroji Chibana, Akira Watanabe, Takashi Yaguchi, Masashi Yamaguchi, Katsuhiko Kamei, Tohru Gonoi
Aspergillus fumigatus is an important fungal pathogen of humans. Inhaled conidia of A. fumigatus adhere to pulmonary epithelial cells, causing oportunistic infection. However, little is known about the molecular mechanism of the adherence of resting conidia. Fungal molecules adhesive to host cells are presumed to be displayed on the conidial surface during conidial formation as a result of changes in gene expression. Therefore, we exhaustively searched for adhesion molecules by comparing the phenotypes and the gene expression profiles of A...
November 7, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/29112326/real-world-challenges-and-unmet-needs-in-the-diagnosis-and-treatment-of-suspected-invasive-pulmonary-aspergillosis-in-patients-with-hematological-diseases-an-illustrative-case-study
#10
Martin Hoenigl, Juergen Prattes, Peter Neumeister, Albert Wölfler, Robert Krause
Recent years have seen important advances in the diagnosis of invasive pulmonary aspergillosis (IPA), complemented by the introduction of new therapies. Despite this, IPA remains a major cause of infection-related mortality in patients with hematological diseases. There are two main reasons for this. First, diagnosis of IPA remains a challenge, since risk factors and the clinical, radiological and mycological presentations vary not only by fungal disease stage, but also by patient group (e.g. neutropenic versus non-neutropenic patients)...
November 7, 2017: Mycoses
https://www.readbyqxmd.com/read/29102972/urinary-tract-aspergillosis-in-a-patient-with-chronic-kidney-disease
#11
Linghong Zhou, Huazhen Zhao, Zhongqing Chen, Liping Zhu
Invasive aspergillosis is a life-threatening fungal infection, especially in immunocompromised patients. Pulmonary aspergillosis is the most common type of the infection, while urinary tract infection is relatively rare. Here, we describe a case of a 46-year-old man with chronic renal disease presenting with intermittent abdominal pain. The diagnosis of aspergillosis was established by pathological findings of the fungal ball in the bladder. The patient underwent multiple antimicrobial treatments and surgical interventions and was finally cured by posaconazole...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29096195/lung-epithelium-barrier-immunity-to-inhaled-fungi-and-driver-of-fungal-associated-allergic-asthma
#12
REVIEW
Darin L Wiesner, Bruce S Klein
Fungi are ubiquitous in the environment. The epithelium that lines our airways is the first point of contact with the frequent encounter of inhaled fungi. Consequently, the lung epithelium has evolved behaviors that instruct the earliest immune events to resist fungal penetration. Although the epithelium efficiently assists in immunity to invasive fungi, it also can be inappropriately triggered, to the detriment of the host, by normally innocuous fungi or fungal components. Thus, there is a tipping point of protective immunity against fungal pathogens versus inflammatory disease caused by an exuberant immune response to harmless fungal antigens...
October 26, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29089435/cryptococcus-neoformans-iron-sulfur-protein-biogenesis-machinery-is-a-novel-layer-of-protection-against-cu-stress
#13
Sarela Garcia-Santamarina, Marta A Uzarska, Richard A Festa, Roland Lill, Dennis J Thiele
Copper (Cu) ions serve as catalytic cofactors to drive key biochemical processes, and yet Cu levels that exceed cellular homeostatic control capacity are toxic. The underlying mechanisms for Cu toxicity are poorly understood. During pulmonary infection by the fungal pathogen Cryptococcus neoformans, host alveolar macrophages compartmentalize Cu to the phagosome, and the ability to detoxify Cu is critical for its survival and virulence. Here, we report that iron-sulfur (Fe-S) clusters are critical targets of Cu toxicity in both Saccharomyces cerevisiae and C...
October 31, 2017: MBio
https://www.readbyqxmd.com/read/29064471/nasopharyngeal-metagenomic-deep-sequencing-data-lancaster-uk-2014-2015
#14
Kate V Atkinson, Lisa A Bishop, Glenn Rhodes, Nicolas Salez, Neil R McEwan, Matthew J Hegarty, Julie Robey, Nicola Harding, Simon Wetherell, Robert M Lauder, Roger W Pickup, Mark Wilkinson, Derek Gatherer
Nasopharyngeal swabs were taken from volunteers attending a general medical practice and a general hospital in Lancaster, UK, and at Lancaster University, in the winter of 2014-2015. 51 swabs were selected based on high RNA yield and allocated to deep sequencing pools as follows: patients with chronic obstructive pulmonary disease; asthmatics; adults with no respiratory symptoms; adults with feverish respiratory symptoms; adults with respiratory symptoms and presence of antibodies against influenza C; paediatric patients with respiratory symptoms (2 pools); adults with influenza C infection (2 pools), giving a total of 9 pools...
October 24, 2017: Scientific Data
https://www.readbyqxmd.com/read/29063476/fungal-%C3%AE-glucan-activates-the-nlrp3-inflammasome-in-human-bronchial-epithelial-cells-through-ros-production
#15
Yanhua Huang, Meng Hua, Xuefan Cui
The nucleotide-binding domain and leucine-rich repeat protein 3 (NLRP3) inflammasome has developed as an important bridge between innate immune and infection recently, and has the ability to drive proteolytic procaspase-1 into bioactive caspase-1, then responsible for proteolytic processing of inflammatory cytokines IL-1β and IL-18. Fungal β-glucan, a major component of fungal cell wall, triggers inflammatory response in multiple immune cells, but rarely described in epithelial cells. Also, the relationship between fungal β-glucan and NLRP3 inflammasome is not clear yet...
October 23, 2017: Inflammation
https://www.readbyqxmd.com/read/29055116/inhaled-cryptococcus-neoformans-elicits-allergic-airway-inflammation-independent-of-nf%C3%AE%C2%BAb-signaling-in-lung-epithelial-cells
#16
Andrew J McDermott, Tyler A Tumey, Mingwei Huang, Christina M Hull, Bruce S Klein
Pulmonary challenge with the ubiquitous fungus Cryptococcus neoformans results in allergic airway inflammation (AAI) characterized by robust recruitment of eosinophils and T-cells producing type 2 cytokines to the lungs. Previous studies have demonstrated a critical role for NFκB activation within lung epithelial cells (LECs) in driving AAI in response to protein allergens, yet the role of LEC-intrinsic NFκB in promoting AAI following exposure to C. neoformans is poorly understood. To investigate the role of LEC-intrinsic NFκB in promoting AAI following C...
October 20, 2017: Immunology
https://www.readbyqxmd.com/read/29049207/cutaneous-mucormycosis-in-a-patient-with-lupus-nephritis-a-case-report-and-review-of-literature
#17
REVIEW
Wenrong Cheng, Guoqin Wang, Min Yang, Lijun Sun, Hongrui Dong, Yipu Chen, Hong Cheng
RATIONALE: Mucormycosis is a rare fungal infection but life-threatening, especially in lupus nephritis (LN). Mucormycosis may manifest as rhino-orbital-cerebral, pulmonary, cutaneous, gastrointestinal, renal, or disseminated forms. PATIENT CONCERNS: We report a case of a 52-year-old woman with cutaneous mucormycosis infection who was admitted because of LN. DIAGNOSES: Histopathological analysis of the lesion confirmed the Rhizopus microspores from the family Mucoraceae...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29049191/significance-of-monitoring-plasma-concentration-of-voriconazole-in-a-patient-with-liver-failure-a-case-report
#18
Xiaoyan Liu, Haibin Su, Jingjing Tong, Jing Chen, Haozhen Yang, Long Xiao, Jinhua Hu, Lina Zhang
RATIONALE: Invasive pulmonary aspergillosis is associated with significant morbidity and mortality in patients with liver failure. Voriconazole (VRCZ) is recommended as a primary therapeutic agent for the treatment of invasive aspergillosis and metabolized in the liver. Now, data are still lacking on the safety and appropriate dosage of VRCZ in patients with liver failure. Here, we report a representative case of invasive pulmonary fungal infection in a patient with liver failure who was treated with low-dose VRCZ...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29038249/anti-pd-1-antibody-treatment-promotes-clearance-of-persistent-cryptococcal-lung-infection-in-mice
#19
Jonathan A Roussey, Steven P Viglianti, Seagal Teitz-Tennenbaum, Michal A Olszewski, John J Osterholzer
Activation of immunomodulatory pathways in response to invasive fungi can impair clearance and promote persistent infections. The programmed cell death protein-1 (PD-1) signaling pathway inhibits immune effector responses against tumors, and immune checkpoint inhibitors that block this pathway are being increasingly used as cancer therapy. The objective of this study was to investigate whether this pathway contributes to persistent fungal infection and to determine whether anti-PD-1 Ab treatment improves fungal clearance...
November 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29033946/exploitation-of-scavenger-receptor-macrophage-receptor-with-collagenous-structure-by-cryptococcus-neoformans-promotes-alternative-activation-of-pulmonary-lymph-node-cd11b-conventional-dendritic-cells-and-non-protective-th2-bias
#20
Jintao Xu, Adam Flaczyk, Lori M Neal, Zhenzong Fa, Daphne Cheng, Mike Ivey, Bethany B Moore, Jeffrey L Curtis, John J Osterholzer, Michal A Olszewski
Macrophage receptor with collagenous structure (MARCO) contributes to fungal containment during the early/innate phase of cryptococcal infection; however, its role in adaptive antifungal immunity remains unknown. Using a murine model of cryptococcosis, we compared host adaptive immune responses in wild-type and MARCO(-/-) mice throughout an extended time course post-infection. Unlike in early infection, MARCO deficiency resulted in improved pulmonary fungal clearance and diminished cryptococcal dissemination during the efferent phase...
2017: Frontiers in Immunology
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