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Invasive fungal infection

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https://www.readbyqxmd.com/read/28641094/emerging-concepts-in-cytomegalovirus-infection-following-hematopoietic-stem-cell-transplantation
#1
REVIEW
Jose F Camargo, Krishna V Komanduri
Despite the refinements in molecular methods for the detection of cytomegalovirus (CMV) and the advent of highly effective preemptive strategies, CMV remains a leading cause of morbidity and mortality in hematopoietic cell transplant (HCT) recipients. CMV can cause tissue-invasive disease including pneumonia, hepatitis, colitis, retinitis, and encephalitis. Mortality in HCT recipients with CMV disease can be as high as 60%. CMV infection has been associated with increased risk of secondary bacterial and fungal infections, increased risk of graft-versus-host disease, and high rates of nonrelapse mortality following HCT...
June 14, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28637861/epidemic-and-endemic-pathogen-dynamics-correspond-to-distinct-host-population-microbiomes-at-a-landscape-scale
#2
Andrea J Jani, Roland A Knapp, Cheryl J Briggs
Infectious diseases have serious impacts on human and wildlife populations, but the effects of a disease can vary, even among individuals or populations of the same host species. Identifying the reasons for this variation is key to understanding disease dynamics and mitigating infectious disease impacts, but disentangling cause and correlation during natural outbreaks is extremely challenging. This study aims to understand associations between symbiotic bacterial communities and an infectious disease, and examines multiple host populations before or after pathogen invasion to infer likely causal links...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28636889/complications-of-hematopoietic-stem-transplantation-fungal-infections
#3
REVIEW
Ali S Omrani, Reem S Almaghrabi
Patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) are at increased risk of invasive fungal infections, especially during the early neutropenic phase and severe graft-versus-host disease. Mold-active prophylaxis should be limited to the highest risk groups. Empiric antifungal therapy for HSCT with persistent febrile neutropenia is associated with unacceptable response rates, unnecessary antifungal therapy, increased risk of toxicity, and inflated costs. Empiric therapy should not be a substitute for detailed work up to identify the cause of fever in such patients...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28636808/diversity-and-abundance-of-human-pathogenic-fungi-associated-with-pigeon-feces-in-urban-environments
#4
Won Dong Lee, Jonathan J Fong, John A Eimes, Young Woon Lim
Pathogenic fungi are a growing health concern worldwide, particularly in large, densely populated cities. The dramatic upsurge of pigeon populations in cities has been implicated in the increased incidence of invasive fungal infections. In the current study, we used a culture-independent, high-throughput sequencing approach to describe the diversity of clinically relevant fungi (CRF) associated with pigeon feces and map the relative abundance of CRF across Seoul, Korea. In addition, we tested whether certain geographical, sociological, and meteorological factors were significantly associated with the diversity and relative abundance of CRF...
June 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28635170/alginate-oligosaccharides-modify-hyphal-infiltration-of-candida-albicans-in-an-in-vitro-model-of-invasive-human-candidosis
#5
Manon F Pritchard, Alison Jack, Lydia C Powell, Hina Sadh, Philip D Rye, Katja E Hill, David W Thomas
AIMS: A novel alginate oligomer (OligoG CF-5/20) has been shown to potentiate antifungal therapy against a range of fungal pathogens. The current study assessed the effect of this oligomer on in vitro virulence factor expression and epithelial invasion by Candida species. METHODS AND RESULTS: Plate substrate assays and epithelial models were used to assess Candida albicans (CCUG 39343 and ATCC 90028) invasion, in conjunction with confocal laser-scanning microscopy and histochemistry...
June 21, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28631431/phaeohyphomycosis-breast-masquerading-as-fibroadenoma-in-a-young-teenage-girl
#6
Amita Jain Gupta, Meeta Singh, Surekha Yadav, Nita Khurana, Shyam Lata Jain, Rohit Chawla, Sunil Laka, Anurag Mishra
Phaeohyphomycosis is an unusual granulomatous fungal infection, observed in immunocompromised or diabetic patients; however, it is even rarer in immunocompetent patients. Cytological findings of the same have been infrequently reported. The histopathological diagnosis or fungal culture helps in definitive diagnosis to identify the exact fungal species. Hereby, we report a rare case of invasive fungal infection in a breast lump in a young female, presenting as fibroadenoma breast. Fine needle aspiration cytology from the breast lesion showed the presence of septate acute-angled branching fungal hyphae with focal pigmentation, morphologically suggestive of phaeohyphomycosis which was positive with fungal stains...
June 19, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28623532/rhizopus-homothallicus-causing-invasive-infections-series-of-three-cases-from-a-single-centre-in-north-india
#7
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/28622118/imaging-spectrum-of-invasive-fungal-and-fungal-like-infections
#8
Hilary L P Orlowski, Sebastian McWilliams, Vincent M Mellnick, Sanjeev Bhalla, Meghan G Lubner, Perry J Pickhardt, Christine O Menias
Invasive fungal and fungal-like infections contribute to substantial morbidity and mortality in immunocompromised individuals. The incidence of these infections is increasing-largely because of rising numbers of immunocompromised patients, including those with neutropenia, human immunodeficiency virus, chronic immunosuppression, indwelling prostheses, burns, and diabetes mellitus, and those taking broad-spectrum antibiotics. Invasive fungal pathogens include primary mycotic organisms such as Histoplasma capsulatum, Coccidioides immitis, Blastomyces dermatitidis, and Paracoccidioides brasiliensis, which are true pathogens and inherently virulent...
June 16, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28620958/a-network-meta-analysis-of-primary-prophylaxis-for-invasive-fungal-infection-in-haematological-patients
#9
REVIEW
L P Leonart, F S Tonin, V L Ferreira, S T S Penteado, A Wiens, F A Motta, R Pontarolo
WHAT IS KNOWN AND OBJECTIVE: Antifungal prophylaxis is an option to reduce the incidence of invasive fungal infection (IFI) in haematological patients. To date, no network meta-analysis (NMA) of high-quality evidence (double-blind randomized controlled trials) has been performed on this subject. This systematic review and NMA aimed to evaluate the safety and efficacy of different antifungal agents used for prophylaxis of IFI in patients with haematological disorders. METHODS: A systematic review was performed according to PRISMA and Cochrane recommendations...
June 15, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28620270/flucytosine-and-amphotericin-b-coadministration-induces-dose-related-renal-injury
#10
Alexandra Folk, Cornel Balta, Hildegard Herman, Alexandra Ivan, Oana Maria Boldura, Lucian Paiusan, Aurel Ardelean, Anca Hermenean
Invasive fungal infections remain an important clinical problem, and despite recent approaches, they bring high morbidity and mortality. Combination therapies are the most effective; however, adverse effects need to be considered. In this study, we aimed to evaluate the nephrotoxicity induced by combined therapy of flucytosine (FL) and amphotericin B (AMF) at 3 different doses administered to mice for 14 days: 300 μg/kg AMF+50 mg/kg FL; 600 μg/kg AMF+100 mg/kg FL; 900 μg/kg AMF+150 mg/kg FL. Antifungal coadministration triggered nuclear translocation of NF-κB and upregulated nuclear factor kappa-light-chain-enhancer of activated B cells subunit p65 (NF-κB p65) messenger RNA mRNA level in dose-dependent manner...
April 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28616054/an-investigation-on-non-invasive-fungal-sinusitis-molecular-identification-of-etiologic-agents
#11
Abdolrasoul Mohammadi, Seyed Mostafa Hashemi, Sayed Hamidreza Abtahi, Seyed Mohammad Lajevardi, Sahar Kianipour, Rasoul Mohammadi
BACKGROUND: Fungal sinusitis is increasing worldwide in the past two decades. It is divided into two types including invasive and noninvasive. Noninvasive types contain allergic fungal sinusitis (AFS) and fungus ball. AFS is a hypersensitivity reaction to fungal allergens in the mucosa of the sinonasal tract in atopic individuals. The fungus ball is a different type of noninvasive fungal rhinosinusitis which is delineated as an accumulation of debris and fungal elements inside a paranasal sinus...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28615623/proboscis-infection-route-of-beauveria-bassiana-triggers-early-death-of-anopheles-mosquito
#12
Minehiro Ishii, Hirotaka Kanuka, Athanase Badolo, N'Falé Sagnon, Wamdaogo M Guelbeogo, Masanori Koike, Daigo Aiuchi
Entomopathogenic fungi are known to control vector mosquito populations. Thus, understanding the infection dynamics of entomopathogenic fungi is crucial for the effective control of insect pests such as mosquitoes. We investigated the dynamics of Beauveria bassiana s.l. 60-2 infection of Anopheles stephensi by exposing the mosquito to fungus-impregnated filter paper through two infection routes and then comparing the mortality and extent of infection. Fungal development was observed after using this inoculation method with both the tarsus route and the proboscis route, but early mosquito death occurred only after infection through the proboscis route...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611248/the-aspergillus-fumigatus-crza-transcription-factor-activates-chitin-synthase-gene-expression-during-the-caspofungin-paradoxical-effect
#13
Laure Nicolas Annick Ries, Marina Campos Rocha, Patrícia Alves de Castro, Rafael Silva-Rocha, Roberto Nascimento Silva, Fernanda Zanolli Freitas, Leandro José de Assis, Maria Célia Bertolini, Iran Malavazi, Gustavo H Goldman
Aspergillus fumigatus is an opportunistic fungal pathogen that causes invasive aspergillosis (IA), a life-threatening disease in immunocompromised humans. The echinocandin caspofungin, adopted as a second-line therapy in combating IA, is a β-1,3-glucan synthase inhibitor, which, when used in high concentrations, reverts the anticipated A. fumigatus growth inhibition, a phenomenon called the "caspofungin paradoxical effect" (CPE). The CPE has been widely associated with increased chitin content in the cell wall due to a compensatory upregulation of chitin synthase-encoding genes...
June 13, 2017: MBio
https://www.readbyqxmd.com/read/28607903/invasive-fungal-infection-in-acute-myeloid-leukemia-associated-with-myeloid-sarcoma-of-the-sinonasal-cavity-a-rare-case
#14
Meghashree Vishwanath, Sandhya Ilanthodi, Rukma Bhandary, Muktha R Pai
Myeloid sarcoma is a rare malignant extramedullary neoplasm of myeloid precursor cells. The majority of these cases occur in patients with known leukemia or those who eventually develop the disease. It can occur in various sites but sinonasal cavity involvement along with invasive fungal infection is exceedingly rare.
June 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28607100/control-of-mucosal-candidiasis-in-the-zebrafish-swimbladder-depends-on-neutrophils-that-block-filament-invasion-and-drive-extracellular-trap-production
#15
Remi L Gratacap, Allison K Scherer, Brittany G Seman, Robert T Wheeler
Candida albicans is a ubiquitous mucosal commensal that is normally prevented from causing acute or chronic invasive disease. Neutrophils contribute to protection in oral infection but exacerbate vulvovaginal candidiasis. To dissect the role of neutrophils during mucosal candidiasis we took advantage of a new, transparent zebrafish swimbladder infection model. Intravital microscopic tracking of individual animals revealed that blocking neutrophil recruitment leads to rapid mortality in this model through faster disease progression...
June 12, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28605112/candida-albicans-biofilms-comparative-analysis-of-room-temperature-and-cryofixation-for-scanning-electron-microscopy
#16
T Vila, B B Fonseca, M M L DA Cunha, G R C Dos Santos, K Ishida, E Barreto-Bergter, W DE Souza, S Rozental
Biofilms are frequently related to invasive fungal infections and are reported to be more resistant to antifungal drugs than planktonic cells. The structural complexity of the biofilm as well as the presence of a polymeric extracellular matrix (ECM) is thought to be associated with this resistant behavior. Scanning electron microscopy (SEM) after room temperature glutaraldehyde-based fixation, have been used to study fungal biofilm structure and drug susceptibility but they usually fail to preserve the ECM and, therefore, are not an optimised methodology to understand the complexity of the fungal biofilm...
June 12, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28604474/impact-of-cyp2c19-genotype-and-liver-function-on-voriconazole-pharmacokinetics-in-renal-transplant-recipients
#17
Zi-Wei Li, Feng-Hua Peng, Miao Yan, Wu Liang, Xiao-Lei Liu, Yan-Qin Wu, Xiao-Bin Lin, Sheng-Lan Tan, Feng Wang, Ping Xu, Ping-Fei Fang, Yi-Ping Liu, Da-Xiong Xiang, Bui-Kui Zhang
BACKGROUND: Invasive fungal infection (IFI) is one of the leading causes of early death after renal transplantation. Voriconazole (VRC) is the first-line drug of IFI. Because of the large inter- and intra-individual variability in VRC plasma concentrations and the narrow therapeutic window for treating patients with IFIs, it is crucial to study the factors which could influence pharmacokinetic variability. We performed a population pharmacokinetics (PPK) study of VRC for personalized medicine...
June 8, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28602276/fungal-aerocontamination-exposure-risk-for-patients-in-3-successive-locations-of-a-pediatric-hematology-unit-department-influence-of-air-equipment-and-building-structure-on-air-quality
#18
Anne-Pauline Bellanger, Gabriel Reboux, Florent Demonmerot, Houssein Gbaguidi-Haore, Laurence Millon
BACKGROUND: Invasive fungal infections (IFIs) play an important role in the mortality of immunocompromised patients. The pediatric hematology department (PHD) at Besançon University Hospital has relocated 3 times: (1) from a building without an air filtration system (B1), (2) to a renovated building with low air pressure (B2), and (3) to a new building with high air pressure and high-efficiency particulate air filters (B3). This study aimed to investigate how these relocations influenced the fungal exposure risk for the PHD's patients...
June 8, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28600810/infections-from-7-clinical-trials-of-ixekizumab-an-anti-interleukin-17a-monoclonal-antibody-in-patients-with-moderate-to-severe-psoriasis
#19
K A Papp, H Bachelez, A Blauvelt, K L Winthrop, R Romiti, M Ohtsuki, N Acharya, D K Braun, L Mallbris, F Zhao, W Xu, C D Walls, B Strober
BACKGROUND: Infections are associated with biologic therapies in psoriasis. OBJECTIVES: To summarise the incidence of infections in moderate-to-severe psoriasis patients treated with ixekizumab, an anti-interleukin (IL)-17A monoclonal antibody. METHODS: Infections are summarised from an integrated database of 7 controlled and uncontrolled ixekizumab psoriasis trials. Data are presented from placebo-controlled induction (Weeks 0-12; UNCOVER-1, -2, and -3) and maintenance periods (Weeks 12-60; UNCOVER-1 and -2) as well as all ixekizumab-exposed patients pooled from all 7 trials...
June 10, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28597476/safe-fluoroquinolones-prophylaxis-in-blood-cancer-patients-with-chemotherapy-induced-neutropenia-and-glucose-6-phosphate-dehydrogenase-deficiency
#20
M Sanna, G Caocci, F Orrù, A Ledda, A Vacca, E Piras, C Fozza, P Deias, G Tidore, F Dore, G La Nasa
WHAT IS KNOWN AND OBJECTIVE: Bacterial infections are the leading causes of morbidity and mortality in haematologic patients with chemotherapy-induced neutropenia. The only strategy shown to be effective in reducing febrile neutropenia incidence is fluoroquinolone prophylaxis, but the safety of this class of drugs in patients with glucose-6-phosphate dehydrogenase deficiency (G6PD-), the most common human enzyme defect, is still controversial because of the claimed association with acute haemolytic anaemia...
June 8, 2017: Journal of Clinical Pharmacy and Therapeutics
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