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Candida albicans

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https://www.readbyqxmd.com/read/29786499/scheffersomyces-stambukii-f-a-sp-nov-a-d-xylose-fermenting-species-isolated-from-rotting-wood
#1
Mariana R Lopes, Thiago M Batista, Glória R Franco, Lucas R Ribeiro, Ana R O Santos, Carolina Furtado, Rennan G Moreira, Aristóteles Goes-Neto, Marcos J S Vital, Luiz H Rosa, Marc-André Lachance, Carlos A Rosa
Two isolates representing a new species of Scheffersomyces were isolated from rotting wood samples collected in an Amazonian forest ecosystem in Brazil. Analysis of the sequences of the D1/D2 domains showed that this new species is phylogenetically related to Scheffersomyces NYMU 15730, a species without a formal description, and the two are in an early emerging position with respect to the xylose-fermenting subclade containing Scheffersomyces titanus and Scheffersomyces stipitis. Phylogenomic analyses using 474 orthologous genes placed the new species in an intermediary position between Scheffersomyces species and the larger genus Spathaspora and the Candida albicans/Lodderomyces clade...
May 22, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29783771/adhesins-in-candida-glabrata
#2
REVIEW
Bea Timmermans, Alejandro De Las Peñas, Irene Castaño, Patrick Van Dijck
The human fungal pathogen Candida glabrata is causing more and more problems in hospitals, as this species shows an intrinsic antifungal drug resistance or rapidly becomes resistant when challenged with antifungals. C. glabrata only grows in the yeast form, so it is lacking a yeast-to-hyphae switch, which is one of the main virulence factors of C. albicans . An important virulence factor of C. glabrata is its capacity to strongly adhere to many different substrates. To achieve this, C. glabrata expresses a large number of adhesin-encoding genes and genome comparisons with closely related species, including the non-pathogenic S...
May 20, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29782688/oral-yeast-colonization-in-patients-with-primary-and-secondary-sj%C3%A3-gren-s-syndrome
#3
Clarissa Castro Galvão Medeiros, Luiz Gustavo Dos Anjos Borges, Karen Cherubini, Fernanda Gonçalves Salum, Renata Medina da Silva, Maria Antonia Zancanaro de Figueiredo
OBJECTIVE: The study aimed to investigate the pattern of oral yeast colonization of Sjögren's syndrome patients and its correlation to salivary flow rates, age and time of the disease progression. MATERIALS AND METHODS: Saliva and swab specimens were obtained from 45 patients (primary Sjögren's syndrome= 15/ secondary Sjögren's syndrome= 15/ healthy controls= 15). Yeast species were identified using culture method through chromogenic medium followed by polymerase chain reaction and Sanger sequencing...
May 21, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29782555/langerin-dcs-regulate-innate-il-17-production-in-the-oral-mucosa-during-candida-albicans-mediated-infection
#4
Florian Sparber, Tamas Dolowschiak, Sarah Mertens, Laura Lauener, Björn E Clausen, Nicole Joller, Patrizia Stoitzner, Roxane Tussiwand, Salomé LeibundGut-Landmann
The opportunistic fungal pathogen Candida albicans frequently causes diseases such as oropharyngeal candidiasis (OPC) in immunocompromised individuals. Although it is well appreciated that the cytokine IL-17 is crucial for protective immunity against OPC, the cellular source and the regulation of this cytokine during infection are still a matter of debate. Here, we directly visualized IL-17 production in the infected tongue of experimentally infected mice, thereby demonstrating that this key cytokine is expressed by three complementary subsets of CD90+ leukocytes: RAG-dependent αβ and γδ T cells, as well as RAG-independent ILCs...
May 21, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29780757/huge-candida-albicans-normal-native-tricuspid-valve-endocarditis
#5
Massimiliano Guerriero, Francesco Colasurdo, Anna Maria Pollio
Fungal endocarditis has become an important infection associated with medical progress and the modern lifestyle. In particular, Candida spp. is a rare but important cause of infective endocarditis. We report the case of a 28-year-old woman-quadriplegic and bedridden from birth-who died after repeated episodes of pneumonia treated with different regimens of intravenous antibiotics. A medico legal autopsy was performed, which diagnosed severe Candida native valve infective endocarditis (CIE). This case report illustrates the prolonged use of antibiotic treatment as a possible risk factor for the development of CIE...
April 2018: Autopsy & Case Reports
https://www.readbyqxmd.com/read/29778961/uva-induced-antimicrobial-activity-of-zno-ag-nanocomposite-covered-surfaces
#6
Meeri Visnapuu, Merilin Rosenberg, Egle Truska, Ergo Nõmmiste, Andris Šutka, Anne Kahru, Mihkel Rähn, Heiki Vija, Kaja Orupõld, Vambola Kisand, Angela Ivask
Application of efficient antimicrobial surfaces has been estimated to decrease both, the healthcare-associated infections and the spread of antibiotic-resistant bacteria. In this paper, we prepared ZnO and ZnO/Ag nanoparticle covered surfaces and evaluated their antimicrobial efficacy towards a Gram-negative bacterial model (Escherichia coli), a Gram-positive bacterial model (Staphylococcus aureus) and a fungal model (Candida albicans) in the dark and under UVA illumination. The surfaces were prepared by spin coating aliquots of ZnO and ZnO/Ag nanoparticle suspensions onto glass substrates...
May 4, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29778633/comparative-analysis-of-proteinase-phospholipase-hydrophobicity-and-biofilm-forming-ability-in-candida-species-isolated-from-clinical-specimens
#7
S Dabiri, M Shams-Ghahfarokhi, M Razzaghi-Abyaneh
Candida species are the commensal organisms of human and animal mucosa that cause a wide range of debilitating diseases in immunocompromised patients and other susceptible individuals. The present study aimed to investigate the ability of clinical isolates of various Candida species to produce proteinase and phospholipase, hydrophobicity and biofilm forming ability that assumed to have a vital role in Candida pathogenicity. Eighty-four Candida strains belonged to Candida albicans (44.1%), C. glabrata (5.9%), C...
May 16, 2018: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29777096/the-first-isolate-of-candida-auris-in-china-clinical-and-biological-aspects
#8
Xiaojuan Wang, Jian Bing, Qiushi Zheng, Feifei Zhang, Jingbo Liu, Huizhen Yue, Li Tao, Han Du, Yina Wang, Hui Wang, Guanghua Huang
The emerging human fungal pathogen Candida auris has been recognized as a multidrug resistant species and is associated with high mortality. This fungus was first described in Japan in 2009 and has been reported in at least 18 countries on five continents. In this study, we report the first isolate of C. auris from the bronchoalveolar lavage fluid (BALF) of a hospitalized woman in China. Interestingly, this isolate is susceptible to all tested antifungals including amphotericin B, fluconazole, and caspofungin...
May 18, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29775695/pulsatilla-decoction-inhibits-candida-albicans-proliferation-and-adhesion-in-a-mouse-model-of-vulvovaginal-candidiasis-via-the-dectin-1-signaling-pathway
#9
Lilin Yang, Haiwang Wu, Weiyu Qiu, Longyi Guo, Xin Du, Qingying Yu, Jie Gao, Songping Luo
ETHNOPHARMACOLOGICAL RELEVANCE: Pulsatilla decoction (PD) is a classical prescription in Traditional Chinese Medicine (TCM) and has been reported to have inhibitory effects on Candida albicans proliferation. STUDY AIM: To investigate the therapeutic effects of PD in the treatment of Vulvovaginal candidiasis (VVC) and elucidate the potential mechanism. MATERIALS AND METHODS: Female BALB/c mice (N=90) were randomized to six treatment groups, including the Control group, Model group, three PD groups and Fluconazole group which served as a positive control (20mg/kg weekly)...
May 15, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29775686/the-comparative-efficacy-of-antiseptics-against-candida-auris-biofilms
#10
Ryan Kean, Emily McKloud, Eleanor M Townsend, Leighann Sherry, Christopher Delaney, Brian L Jones, Craig Williams, Gordon Ramage
Candida auris has emerged as a significant clinical entity due to its ability to cause outbreaks within the healthcare setting. A key feature of its nosocomial lifestyle is its ability to transfer between patients, yet little is known about the mechanisms behind this. A panel of C. auris clinical isolates was screened for their planktonic and sessile susceptibilities to skin disinfection challenge using povidone iodine, chlorhexidine and hydrogen peroxide. C. auris biofilms displayed increased tolerance to these strategies compared to planktonic cells...
May 15, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29774605/mixed-infections-are-a-critical-factor-in-the-treatment-of-superficial-mycoses
#11
A Gawaz, G Weisel
BACKGROUND: Superficial fungal infections of the skin, nails and hair are common with Trichophyton rubrum and Candida albicans being the main pathogens. Yet, in some patients, mycological cultures show growth of more than one fungal agent in the same anatomical region. OBJECTIVE: This study analyses prevalence, frequency and fungal agents found in superficial fungal mixed infections and discusses consequences for diagnostics and treatment. METHODS: Mycological data obtained between January 2006 to December 2015 from clinical specimens from a total cohort of 7733 patients with suspected fungal infections were retrospectively analysed...
May 17, 2018: Mycoses
https://www.readbyqxmd.com/read/29774473/genomic-and-probiotic-characterization-of-sjp-snu-strain-of-pichia-kudriavzevii
#12
Seung-Min Hong, Hyuk-Joon Kwon, Se-Joon Park, Won-Jin Seong, Ilhwan Kim, Jae-Hong Kim
The yeast strain SJP-SNU was investigated as a probiotic and was characterized with respect to growth temperature, bile salt resistance, hydrogen sulfide reducing activity, intestinal survival ability and chicken embryo pathogenicity. In addition, we determined the complete genomic and mitochondrial sequences of SJP-SNU and conducted comparative genomics analyses. SJP-SNU grew rapidly at 37 °C and formed colonies on MacConkey agar containing bile salt. SJP-SNU reduced hydrogen sulfide produced by Salmonella serotype Enteritidis and, after being fed to 4-week-old chickens, could be isolated from cecal feces...
May 17, 2018: AMB Express
https://www.readbyqxmd.com/read/29774204/non-canonical-activities-of-hog1-control-sensitivity-of-candida-albicans-to-killer-toxins-from-debaryomyces-hansenii
#13
Ana Morales-Menchén, Federico Navarro-García, José P Guirao-Abad, Elvira Román, Daniel Prieto, Ioana V Coman, Jesús Pla, Rebeca Alonso-Monge
Certain yeasts secrete peptides known as killer toxins or mycocins with a deleterious effect on sensitive yeasts or filamentous fungi, a common phenomenon in environmental species. In a recent work, different Debaryomyces hansenii ( Dh ) strains isolated from a wide variety of cheeses were identified as producing killer toxins active against Candida albicans and Candida tropicalis . We have analyzed the killer activity of these toxins in C. albicans mutants defective in MAPK signaling pathways and found that the lack of the MAPK Hog1 (but not Cek1 or Mkc1) renders cells hypersensitive to Dh mycocins while mutants lacking other upstream elements of the pathway behave as the wild type strain...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29773010/mycelial-growth-and-antimicrobial-activity-of-pleurotus-species-agaricomycetes
#14
Teresa A Castillo, Renata A Lemos, José Raimundo G Pereira, José Maria A Alves, Maria Francisca S Teixeira
The objective of this study was to analyze mycelial growth under different culture conditions and antimicrobial activity of Pleurotus ostreatus (Jacq.: Fr.) Kumm. (DPUA 1533) and P. ostreatus (Jacq.: Fr.) Kumm. cv. Florida (DPUA 1534) against fungi and bacteria of medical importance. The growth of Pleurotus species was evaluated in natural and complex media, with and without light, at 25°C and 28°C for 8, 15, and 30 days. Candida albicans (DPUA 1336), Cryptococcus laurentii (DPUA 1501), Aspergillus flavus (DPUA 1836), Escherichia coli (DAUPE 224), and Mycobacterium smegmatis (ATCC 607) were used to test antibiosis...
2018: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/29772751/what-we-do-not-know-about-fungal-cell-adhesion-molecules
#15
REVIEW
Peter N Lipke
There has been extensive research on structure and function of fungal cell adhesion molecules, but the most of the work has been about adhesins in Candida albicans and Saccharomyces cerevisiae. These yeasts are members of a single ascomycete order, and adhesion molecules from the six other fungal phyla are only sparsely described in the literature. In these other phyla, most of the research is at the cellular level, rather than at the molecular level, so there has been little characterization of the adhesion molecules themselves...
May 17, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29772300/effect-of-nagilactone-e-on-cell-morphology-and-glucan-biosynthesis-in-budding-yeast-saccharomyces-cerevisiae
#16
Kengo Hayashi, Yoshihiro Yamaguchi, Akira Ogita, Toshio Tanaka, Isao Kubo, Ken-Ichi Fujita
Nagilactones are norditerpene dilactones isolated from the root bark of Podocarpus nagi. Although nagilactone E has been reported to show antifungal activities, its activity is weaker than that of antifungals on the market. Nagilactone E enhances the antifungal activity of phenylpropanoids such as anethole and isosafrole against nonpathogenic Saccharomyces cerevisiae and pathogenic Candida albicans. However, the detailed mechanisms underlying the antifungal activity of nagilactone E itself have not yet been elucidated...
May 14, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29770423/large-scale-patterning-of-living-colloids-for-dynamic-studies-of-neutrophil-microbe-interactions
#17
Jae Jung Kim, Eduardo Reátegui, Alex Hopke, Fatemeh Jalali, Maedeh Roushan, Patrick S Doyle, Daniel Irimia
Neutrophils are the first white blood cells to respond to microbes and to limit their invasion of the body. However, the growth of the microbes into colonies often challenges the neutrophils ability to contain them. To study the interactions between neutrophils and microbial colonies, we designed an assay for arranging microbes in clusters of controlled size (i.e. living colloids). The patterned microbes in the living colloid are mechanically trapped inside the wells and fully accessible to neutrophils. Using the assay, we studied the interactions between human neutrophils and Candida albicans and Staphylococcus aureus, two common human pathogens...
May 17, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29770172/prevention-of-cross-contamination-risk-by-disinfection-of-irreversible-hydrocolloid-impression-materials-with-ozonated-water
#18
Omid Savabi, Farahnaz Nejatidanesh, Kamran Poshang Bagheri, Leila Karimi, Ghazal Savabi
Background: Disinfection of dental impression is mandatory for preventing the cross infection between dental staff and dental laboratory. Ozone as a disinfectant can be used in various ways in dentistry. The aim of this study was to evaluate the efficacy of ozonated water for disinfection of irreversible hydrocolloid impression materials and preventing cross-contamination. Methods: Thirty-two circular specimens (1 cm diameter and 2 mm thickness) of irreversible hydrocolloid impression material were made...
2018: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29770136/cd3%C3%AE%C2%B5-expression-defines-functionally-distinct-subsets-of-v%C3%AE-1-t-cells-in-patients-with-human-immunodeficiency-virus-infection
#19
Pádraic J Dunne, Christina O Maher, Michael Freeley, Katie Dunne, Andreea Petrasca, Judy Orikiiriza, Margaret R Dunne, Derval Reidy, Siobhan O'Dea, Aisling Loy, Jim Woo, Aideen Long, Thomas R Rogers, Fiona Mulcahy, Derek G Doherty
Human γδ T cells expressing the Vδ1 T cell receptor (TCR) recognize self and microbial antigens and stress-inducible molecules in a major histocompatibility complex-unrestricted manner and are an important source of innate interleukin (IL)-17. Vδ1 T cells are expanded in the circulation and intestines of patients with human immunodeficiency virus (HIV) infection. In this study, we show that patients with HIV have elevated frequencies, but not absolute numbers, of circulating Vδ1 T cells compared to control subjects...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29768730/biofilm-in-voice-prosthesis-a-prospective-cohort-study-and-laboratory-tests-using-sonication-and-sem-analysis
#20
Jacopo Galli, Lea Calo', Duino Meucci, Monica Giuliani, Daniela Lucidi, Gaetano Paludetti, Riccardo Torelli, Maurizio Sanguinetti, Claudio Parrilla
OBJECTIVE: The objective of the study was to compare the biofilm growing pattern and its morphological extent on silicone and a teflon-like material using a sonication process and a Scanning Electron Microscope (SEM). DESIGN: A prospective cohort study and a laboratory study. SETTING: Otolaryngology -Head and Neck surgery Department and the Microbiology Institute. PARTICIPANTS: The participants included fifteen laryngectomized patients with phonatory prostheses, which were removed due to device failure, and two different kinds of phonatory prostheses from the laboratory (Provox 2 and ActiValve) that were artificially colonized by Candida albicans...
May 16, 2018: Clinical Otolaryngology
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