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https://www.readbyqxmd.com/read/29159502/antifungal-activity-of-myrtus-communis-against-malassezia-sp-isolated-from-the-skin-of-patients-with-pityriasis-versicolor
#1
Aleksandra Barac, Matthew Donadu, Donatella Usai, Vesna Tomic Spiric, Vittorio Mazzarello, Stefania Zanetti, Ema Nikolic, Goran Stevanovic, Natasa Popovic, Salvatore Rubino
The increasing incidence of fungal infections and antifungal resistance has prompted the search for novel antifungal drugs and alternative agents. We explored the antifungal activity of Myrtus communis essential oil (EO) against Malassezia sp. isolated from the skin of patients with pityriasis versicolor. These broad-spectrum antimicrobial activities of M. communis EO and its potent inhibiting activity on Malassezia growth deserve further research with aim to considerate this EO as candidate for topical use in treatment of skin diseases...
November 20, 2017: Infection
https://www.readbyqxmd.com/read/29157209/transcriptome-sequencing-and-analysis-of-zinc-uptake-related-genes-in-trichophyton-mentagrophytes
#2
Xinke Zhang, Pengxiu Dai, Yongping Gao, Xiaowen Gong, Hao Cui, Yipeng Jin, Yihua Zhang
BACKGROUND: Trichophyton mentagrophytes is an important zoonotic dermatophytic (ringworm) pathogen; causing severe skin infection in humans and other animals worldwide. Fortunately, commonly used fungal skin disease prevention and treatment measures are relatively simple. However, T. mentagrophytes is primarily studied at the epidemiology and drug efficacy research levels, yet current study has been unable to meet the needs of clinical medicine. Zinc is a crucial trace element for the growth and reproduction of fungi and other microorganisms...
November 21, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29156624/evaluation-of-posaconazole-pharmacokinetics-in-adult-patients-with-invasive-fungal-infection
#3
Sarah Allegra, Giovanna Fatiguso, Silvia De Francia, Fabio Favata, Elisa Pirro, Chiara Carcieri, Amedeo De Nicolò, Jessica Cusato, Giovanni Di Perri, Antonio D'Avolio
Mortality and morbidity due to invasive fungal infections have increased over the years. Posaconazole is a second-generation triazole agent with an extended spectrum of activity, which shows a high interindividual variability in its plasma levels, rendering dosing in many patients inconsistent or inadequate. Hence, posaconazole therapeutic drug monitoring, which is easily available in clinical practice, may improve treatment success and safety. The aim of the study was to describe posaconazole pharmacokinetics, and to evaluate the utility of therapeutic drug monitoring for therapy and prophylaxis in a cohort of adult patients...
November 20, 2017: Biomedicines
https://www.readbyqxmd.com/read/29156370/a-novel-aerated-surface-flow-constructed-wetland-using-exhaust-gas-from-biological-wastewater-treatment-performance-and-mechanisms
#4
Xinwen Zhang, Zhen Hu, Jian Zhang, Jinlin Fan, Huu Hao Ngo, Wenshan Guo, Chujun Zeng, Yiwen Wu, Siyuan Wang
In this study, a novel aerated surface flow constructed wetland (SFCW) using exhaust gas from biological wastewater treatment was investigated. Compared with un-aerated SFCW, the introduction of exhaust gas into SFCW significantly improved NH4(+)-N, TN and COD removal efficiencies by 68.30 ± 2.06%, 24.92 ± 1.13% and 73.92 ± 2.36%, respectively. The pollutants removal mechanism was related to the microbial abundance and the highest microbial abundance was observed in the SFCW with exhaust gas because of the introduction of exhaust gas from sequencing batch reactor (SBR), and thereby optimizing nitrogen transformation processes...
September 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29156151/limited-evidence-of-fungicide-driven-triazole-resistant-i-aspergillus-fumigatus-i-in-hamilton-canada
#5
Eta Ashu, Ga Young Kim, Patrick Roy-Gayos, Kelly Dong, Adrian Forsythe, Victoria Giglio, Gregory Korfanty, Deborah Yamamura, Jianping Xu
Aspergillus fumigatus is a ubiquitous opportunistic fungal pathogen that can cause aspergillosis in humans. Over the last decade there have been increasing global reports of treatment failure due to triazole resistance. An emerging hypothesis states that agricultural triazole fungicide use causes clinical triazole-resistance. Here we test this hypothesis in Hamilton, Ontario, Canada by examining a total of 195 agricultural, urban and clinical isolates using 9 highly polymorphic microsatellite markers. For each isolate, the in vitro susceptibilities to itraconazole and voriconazole, two triazole drugs commonly used in the management of patients, were also determined...
November 20, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/29154044/modulating-host-immune-responses-to-fight-invasive-fungal-infections
#6
REVIEW
James E Scriven, Mark W Tenforde, Stuart M Levitz, Joseph N Jarvis
Modulation of host immunity in invasive fungal infection is an appealing but as yet mostly elusive treatment strategy. Animal studies in invasive candidiasis and aspergillosis have demonstrated beneficial effects of colony stimulating factors, interferon-gamma and monoclonal antibodies. More recent studies transfusing leukocytes pre-loaded with lipophilic anti-fungal drugs, or modulated T-cells, along with novel vaccination strategies show great promise. The translation of immune therapies into clinical studies has been limited to date but this is changing and the results of new Candida vaccine trials are eagerly awaited...
November 15, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29153538/oral-paracoccidioidomycosis-in-a-single-center-retrospective-analysis-from-a-brazilian-southeastern-population
#7
Laís Moreira Dutra, Thiago Humberto Mendonça Silva, Aloísio Falqueto, Paulo Mendes Peçanha, Lucia Renata Meireles Souza, Sarah Santos Gonçalves, Tânia Regina Grão Velloso
BACKGROUND: Paracoccidioidomycosis (PCM) is the most prevalent endemic systemic fungal infection in Latin America. In Brazil, it stands out as the eighth-highest cause of mortality among chronic or recurrent infections and has the highest mortality rate among systemic mycoses. Oral mucosal lesions may be the first visible physical manifestation of the disease. This study traced the epidemiological and clinical profiles of patients with oral lesions treated at the University Hospital Cassiano Antonio Moraes, Federal University of Espirito Santo...
November 16, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29153071/-mycoviruses-and-importance-in-mycology
#8
Sema Aşkın Keçeli
Opportunistic fungal infections like invasive candidiasis and aspergillozis have high mortality rate particularly in immunosupressive patients. The rate of therapy success with antifungal agents is usually low. Although immunotherapy methods have been developed to increase the host response against antifungals, there has been a need for new antifungal therapeutic agents in the treatment of invasive aspergillozis and other opportunistic fungal infections. Mycoviruses are the viruses that specifically infect fungi...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29153062/-diagnostic-accuracy-of-the-lightcycler%C3%A2-septifast-assay-in-the-childhood-febrile-neutropenia
#9
Esra Mimaroğlu, Elvan Çağlar Çıtak, Necdet Kuyucu, Gönül Arslan
Infection is the main problem among the patients receiving cancer therapy. The mortality rate can be reduced by the appropriate treatment in the right time. Although blood culture is the gold standard for the diagnoses of sepsis, many factors influence the results of blood culture in children. For this reason, real time polymerase chain reaction (Rt-PCR) has gained importance for the diagnoses of microbiological agents as it is faster than the conventional methods. In this study, we aimed to compare the efficacy of SeptiFast (SF) test with blood culture among children with neutropenic fever...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29152230/rare-fungal-infectious-agents-a-lurking-enemy
#10
REVIEW
Anna Skiada, Ioannis Pavleas, Maria Drogari-Apiranthitou
In the expanding population of immunocompromised patients and those treated in intensive care units, rare fungal infectious agents have emerged as important pathogens, causing invasive infections associated with high morbidity and mortality. These infections may present either as de novo or as breakthrough invasive infections in high-risk patients with hematologic malignancies receiving prophylactic or empirical antifungal therapy or in patients with central venous catheters. Diagnosis and treatment are challenging...
2017: F1000Research
https://www.readbyqxmd.com/read/29151633/the-genus-elaphomyces-ascomycota-eurotiales-a-ribosomal-dna-based-phylogeny-and-revised-systematics-of-european-deer-truffles
#11
A Paz, J-M Bellanger, C Lavoise, A Molia, M Ławrynowicz, E Larsson, I O Ibarguren, M Jeppson, T Læssøe, M Sauve, F Richard, P-A Moreau
Elaphomyces ('deer truffles') is one of the most important ectomycorrhizal fungal genera in temperate and subarctic forest ecosystems, but also one of the least documented in public databases. The current systematics are mainly based on macromorphology, and is not significantly different from that proposed by Vittadini (1831). Within the 49 species recognised worldwide, 23 were originally described from Europe and 17 of these were described before the 20th century. Moreover, very recent phylogenetic treatments of the genus are mainly based on a few extra-European species and most common European species are still poorly documented...
June 2017: Persoonia
https://www.readbyqxmd.com/read/29151333/isolated-sphenoid-sinus-pathologies-a-series-of-40-cases
#12
Fakih Cihat Eravcı, Alper Ceylan, Mehmet Göcek, Fikret İlerı, Süleyman Sabri Uslu, Metin Yılmaz, Yusuf Kızıl
Background/aim: Isolated sphenoid sinus-derived lesions are rare and generally present with unclear symptoms. We are sharing our experience to be mindful of such lesions in differential diagnosis and to help accomplish successful treatment while avoiding revisions and complications.Materials and methods: Data from patients who underwent isolated sphenoid sinus surgeries (ISSs) were retrospectively extracted from the period of January 2005 to August 2015. Demographic data, chief complaints and presenting symptoms, imaging findings, surgical management, and results were evaluated...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29151329/epidemiology-and-analysis-of-invasive-fungal-infections-in-patients-withhematological-malignancies-a-single-center-real-life-experience
#13
Nur Soyer, Hatice Demet Kiper Ünal, Filiz Vural, Fahri Şahin, Mahmut Töbü, Ayhan Dönmez, Murat Tombuloğlu, Bilgin Arda, Güray Saydam
Background/aim: Invasive fungal infection (IFI) causes morbidity and mortality among patients with hematological malignancies. We evaluated the incidence and treatment characteristics of IFIs between October 2012 and December 2013. Materials and methods: Patients who received chemotherapy or stem cell transplantation were retrospectively evaluated. Fungal infections were classified according to EORTC criteria.Results: Prophylaxis and antifungal therapy were given in 30.5% and 23.6% of 522 chemotherapy courses, respectively...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29150273/recurrent-and-disseminated-pityriasis-versicolor-a-novel-clinical-form-consequent-to-malassezia-host-interaction
#14
Karina Romero-Sandoval, Anderson Alves Costa, Maria Glória Teixeira Sousa, Celia Regina Furucho, Neusa Valente, Paulo R Criado, Valeria Aoki, Gil Benard
Pityriasis versicolor is a superficial fungal infection caused by Malassezia spp. The aim of this study is to propose the definition of a new clinical entity: the recurrent and disseminated pityriasis versicolor (RDPV). All patients with RDPV were enrolled over an eight-month period. Clinical and epidemiological data were obtained, Malassezia (M.) species were isolated in cultures and identified by phenotypic and molecular characterization, skin biopsies were taken from active lesions, serum levels of immunoglobulin E were obtained and therapeutic schemes were evaluated...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29150218/keratitis-secondary-to-fusarium-spp-in-spain-2012-2014
#15
M A Mosquera Gordillo, N Barón Cano, A Garralda Luquin, C López Gutiérrez, E Mengual Verdú, G Trujillo Cabrera, J M Garrido Fierro, J Lamarca Mateu, J C Sánchez España, P Marticorena Álvarez, R Feijoó Lera, S Martín Nalda, T Marti Huguet, V Gacía Conca
OBJECTIVE: To describe the clinical-epidemiological characteristics of a case series of fungal keratitis associated with Fusarium spp.., in Spain during the years 2012 to 2014. METHODS: A retrospective study of a case series was conducted on a systematic random sample of 10% of patients identified in Health Centres of provincial capitals (n=250). The centres were asked whether they had been presented with cases of Fusarium spp. keratitis characterised by microbiological methods...
November 14, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/29150028/-a-series-of-20-cases-of-endogenous-endophthalmitis
#16
T Petit, L Mahieu, C Tolou, S Hamid, V Pagot-Mathis, G Martin-Blondel, V Soler
BACKGROUND: The purpose of this case series was to evaluate both the visual and systemic prognosis of patients with endogenous endophthalmitis. MATERIAL AND METHODS: We reported a series of 20 cases of endogenous endophthalmitis occurring between 2012 and 2015 at the university medical center in Toulouse. RESULTS: The mean age was 67 (±43.3) years with a male predominance (n=11). The site of entry was found in 14 cases (87.5%). In 11 cases (69%), the causative agent was a bacterium; a fungal infection was found in five cases...
November 14, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29149896/liposomal-vaccine-formulations-as-prophylactic-agents-design-considerations-for-modern-vaccines
#17
REVIEW
Luis O De Serrano, David J Burkhart
Vaccinology is one of the most important cornerstones in modern medicine, providing better quality of life. The human immune system is composed of innate and adaptive immune processes that interplay when infection occurs. Innate immunity relies on pathogen-associated molecular patterns which are recognized by pathogen recognition receptors localized in antigen presenting cells. After antigen processing and presentation, CD4(+) T cell polarization occurs, further leading to B cell and CD8(+) activation and humoral and cell-mediated adaptive immune responses...
November 17, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29149700/protective-role-of-biosynthesized-silver-nanoparticles-against-early-blight-disease-in-solanum-lycopersicum
#18
Madhuree Kumari, Shipra Pandey, Arpita Bhattacharya, Aradhana Mishra, C S Nautiyal
Tomato suffers a huge loss every year because of early blight disease. This study focuses on efficient inhibition of Alternaria solani, the causative agent of early blight disease in tomato in vitro and in vivo. Foliar spray of 5 μg/mL of biosynthesized silver nanoparticles in A. solani infected plants resulted in significant increase of 32.58% in fresh weight and 23.52% in total chlorophyll content of tomato as compared to A. solani infected plants. A decrease of 48.57, 30, 39.59 and 28.57% was observed in fungal spore count, lipid peroxidation, proline content and superoxide dismutase respectively in infected tomato plants after treatment with synthesized silver nanoparticles as compared to A...
November 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29149328/mir858-mediated-regulation-of-flavonoid-specific-myb-transcription-factor-genes-controls-resistance-to-pathogen-infection-in-arabidopsis
#19
Rosany Camargo-Ramírez, Beatriz Val-Torregrosa, Blanca San Segundo
MicroRNAs (miRNAs) are a class of short endogenous non-coding small RNAs that direct post-transcriptional gene silencing in eukaryotes. In plants, the expression of a large number of miRNAs has been shown to be regulated during pathogen infection. However, the functional role of the majority of these pathogen-regulated miRNAs has not been elucidated. In this work, we investigated the role of Arabidopsis miR858 in the defense response of Arabidopsis plants to infection by fungal pathogens with necrotrophic (Plectosphaerella cucumerina) or hemibiotrophic (Fusarium oxysporum and Colletotrichum higginsianum) lifestyles...
November 15, 2017: Plant & Cell Physiology
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
#20
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
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