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https://www.readbyqxmd.com/read/28438599/newly-identified-invertebrate-type-lysozyme-splys-i-in-mud-crab-scylla-paramamosain-exhibiting-muramidase-deficient-antimicrobial-activity
#1
Jian Zhou, Shu Zhao, Wen-Hong Fang, Jun-Fang Zhou, Jing-Xiao Zhang, Hongyu Ma, Jiang-Feng Lan, Xin-Cang Li
Lysozymes are widely distributed immune effectors exerting muramidase activity against the peptidoglycan of the bacterial cell wall to trigger cell lysis. However, some invertebrate-type (i-type) lysozymes deficient of muramidase activity still exhibit antimicrobial activity. To date, the mechanism underlying the antimicrobial effect of muramidase-deficient i-type lysozymes remains unclear. Accordingly, this study characterized a novel i-type lysozyme, Splys-i, in the mud crab Scylla paramamosain. Splys-i shared the highest identity with the Litopenaeus vannamei i-type lysozyme (Lvlys-i2, 54% identity) at the amino acid level...
April 21, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28434823/influence-of-serum-and-polystyrene-plate-type-on-stability-of-candida-albicans-biofilms
#2
Purity N Kipanga, Walter Luyten
Adhesion is a crucial initial step in microbial biofilm formation. Firm attachment to a target surface subsequently ensures successful colonization and survival despite turbulent conditions. In the laboratory, polystyrene plates are commonly used in biofilm experiments and the 'washing/rinse steps' before staining are critical for assaying biofilm viability. However, these rinse steps risk the removal (partially or entirely) of the formed biofilm, resulting in inconsistent results. The aim of the present study was to optimize conditions for firmer biofilms, less prone to disruption and thus significantly reducing well-to-well variability...
April 20, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28431022/cpp1-phosphatase-mediated-signaling-crosstalk-between-hog1-and-cek1-mitogen-activated-protein-kinases-is-involved-in-the-phenotypic-transition-in-candida-albicans
#3
Fu-Sheng Deng, Ching-Hsuan Lin
Cellular signaling pathways involved in cell growth and differentiation mediated by mitogen-activated protein kinase (MAPK) cascades have been well characterized in fungi. However, the mechanisms of signaling crosstalk between MAPKs to ensure signaling specificity are largely unknown. Previous work showed that activation of the Candida albicans Cek1 MAPK pathway resulted in opaque cell formation and filamentation, which mirrored the phenotypes to hog1Δ. Additionally, deleting the HOG1 gene stimulated Cek1p...
April 20, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28429365/a-randomized-clinical-trial-about-presence-of-pathogenic-microflora-and-risk-of-peri-implantitis-comparison-of-two-different-types-of-implant-abutment-connections
#4
F Mencio, F De Angelis, P Papi, D Rosella, G Pompa, S Di Carlo
OBJECTIVE: The aim of this in vivo study was to evaluate two different types of implant-abutment connections: screwed connection and cemented connection, analyzing peri-implant bacteria microflora as well as other clinical parameters. PATIENTS AND METHODS: Twenty implants were selected, inserted in 20 patients, 10 with a screwed implant-abutment connection (Group 1) and 10 with a cemented implant-abutment connection (Group 2). The peri-implant microflora was collected, after at least 360 days from the prosthetic rehabilitation, using paper points inserted in peri-implant sulcus for 30 s...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28429246/comparison-of-efficacy-and-safety-of-caspofungin-versus-micafungin-in-pediatric-allogeneic-stem-cell-transplant-recipients-a-retrospective-analysis
#5
Natalia Maximova, Giulia Schillani, Roberto Simeone, Alessandra Maestro, Davide Zanon
INTRODUCTION: The high morbidity and mortality associated with invasive fungal infections (IFIs) provide the rationale for antifungal prophylaxis in immuno-compromised pediatric patients undergoing hematopoietic stem cell transplantation (HSCT). Caspofungin and micafungin are antifungal agents of interest for prophylaxis of IFIs because of their potency against Candida and minimal toxicity or interactions with other drugs. Few studies have demonstrated the safety and efficacy of such echinocandins as prophylaxis for IFIs in patients undergoing HSCT...
April 20, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28426292/efficacy-of-three-different-lasers-on-eradication-of-enterococcus-faecalis-and-candida-albicans-biofilms-in-root-canal-system
#6
Silvija Kasić, Marita Knezović, Nataša Beader, Dragana Gabrić, Ana Ivanišević Malčić, Anja Baraba
OBJECTIVE: The objective was to compare the efficacy of three different lasers in disinfection of root canals inoculated with Enterococcus faecalis and Candida albicans biofilms. BACKGROUND: Endodontic space disinfection depends on the type of root canal irrigant used and the way it is delivered and agitated because irrigants have limited ability to reach all parts of root canal system. MATERIALS AND METHODS: Thirty single-rooted human teeth were selected...
April 20, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28424474/molecular-epidemiology-and-azole-resistance-mechanism-study-of-candida-guilliermondii-from-a-chinese-surveillance-system
#7
Jing-Wei Cheng, Kang Liao, Timothy Kudinha, Shu-Ying Yu, Meng Xiao, He Wang, Fanrong Kong, Ying-Chun Xu
We studied the molecular epidemiology and mechanism of azole resistance of 164 C. guilliermondii isolates from a nationwide multi-center surveillance program. The isolates were identified by ITS gene sequencing, and the in vitro susceptibility to fluconazole and voriconazole was determined by broth microdilution method. The 14-α-demethylase gene ERG11 was amplified and sequenced, and microsatellite analysis was performed to study the genetic relatedness of the isolates. Amongst the 164 C. guilliermondii isolates, 15 (9...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421052/whole-genome-based-amplified-fragment-length-polymorphism-analysis-reveals-genetic-diversity-in-candida-africana
#8
Anuradha Chowdhary, Ferry Hagen, Cheshta Sharma, Abdullah M S Al-Hatmi, Letterio Giuffrè, Domenico Giosa, Shangrong Fan, Hamid Badali, Maria Rosa Felice, Sybren de Hoog, Jacques F Meis, Orazio Romeo
This study aimed at investigating the genetic diversity of a panel of Candida africana strains recovered from vaginal samples in different countries. All fungal strains were heterozygous at the mating-type-like locus and belonged to the genotype A of Candida albicans. Moreover, all examined C. africana strains lack N-acetylglucosamine assimilation and sequence analysis of the HXK1 gene showed a distinctive polymorphism that impair the utilization of this amino sugar in this yeast. Multi-locus sequencing of seven housekeeping genes revealed a substantial genetic homogeneity among the strains, except for the CaMPIb, SYA1 and VPS13 loci which contributed significantly to the classification of our set of C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28419220/genome-sequence-and-physiological-analysis-of-yamadazyma-laniorum-f-a-sp-nov-and-a-reevaluation-of-the-apocryphal-xylose-fermentation-of-its-sister-species-candida-tenuis
#9
Max A B Haase, Jacek Kominek, Quinn K Langdon, Cletus P Kurtzman, Chris Todd Hittinger
Xylose fermentation is a rare trait that is immensely important to the cellulosic biofuel industry, and Candida tenuis is one of the few yeasts that has been reported with this trait. Here we report the isolation of two strains representing a candidate sister species of C. tenuis. Integrated analysis of genome sequence and physiology suggested the genetic basis of a number of traits, including variation between the novel species and C. tenuis in lactose metabolism due to the loss of genes encoding lactose permease and β-galactosidase in the former...
April 17, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28413236/scopulariopsis-and-scopulariopsis-like-species-from-indoor-environments
#10
J H C Woudenberg, M Meijer, J Houbraken, R A Samson
Scopulariopsis-like species are often reported from the indoor environment, as well as from clinical samples. The lack of type isolates and thorough phylogenetic studies in the Microascaceae hampered the correct identification of these isolates. Based on recent phylogenetic studies, which resulted in multiple name changes, the aim is to molecularly identify the Scopulariopsis and scopulariopsis-like species which occur in the indoor environment and give an overview of the current species in these genera and their habitats...
September 2017: Studies in Mycology
https://www.readbyqxmd.com/read/28409042/nephrologists-hate-the-dialysis-catheters-a-systemic-review-of-dialysis-catheter-associated-infective-endocarditis
#11
Kalyana C Janga, Ankur Sinha, Sheldon Greenberg, Kavita Sharma
A 53-year-old Egyptian female with end stage renal disease, one month after start of hemodialysis via an internal jugular catheter, presented with fever and shortness of breath. She developed desquamating vesiculobullous lesions, widespread on her body. She was in profound septic shock and broad spectrum antibiotics were started with appropriate fluid replenishment. An echocardiogram revealed bulky leaflets of the mitral valve with a highly mobile vegetation about 2.3 cm long attached to the anterior leaflet...
2017: Case Reports in Nephrology
https://www.readbyqxmd.com/read/28400000/influence-of-growth-conditions-on-adhesion-of-yeast-candida-spp-and-pichia-spp-to-stainless-steel-surfaces
#12
Ružica Tomičić, Peter Raspor
An understanding of adhesion behavior of Candida and Pichia yeast under different environmental conditions is key to the development of effective preventive measures against biofilm-associated infection. Hence in this study we investigated the impact of growth medium and temperature on Candida and Pichia adherence using stainless steel (AISI 304) discs with different degrees of surface roughness (Ra = 25.20-961.9 nm), material typical for the food processing industry as well as medical devices. The adhesion of the yeast strains to stainless steel surfaces grown in Malt Extract broth (MEB) or YPD broth at three temperatures (7 °C, 37 °C, 43 °C for Candida strains and 7 °C, 27 °C, 32 °C for Pichia strains) was assessed by crystal violet staining...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28398335/high-coverage-methylation-data-of-a-gene-model-before-and-after-dna-damage-and-homologous-repair
#13
Antonio Pezone, Giusi Russo, Alfonso Tramontano, Ermanno Florio, Giovanni Scala, Rosaria Landi, Candida Zuchegna, Antonella Romano, Lorenzo Chiariotti, Mark T Muller, Max E Gottesman, Antonio Porcellini, Enrico V Avvedimento
Genome-wide methylation analysis is limited by its low coverage and the inability to detect single variants below 10%. Quantitative analysis provides accurate information on the extent of methylation of single CpG dinucleotide, but it does not measure the actual polymorphism of the methylation profiles of single molecules. To understand the polymorphism of DNA methylation and to decode the methylation signatures before and after DNA damage and repair, we have deep sequenced in bisulfite-treated DNA a reporter gene undergoing site-specific DNA damage and homologous repair...
April 11, 2017: Scientific Data
https://www.readbyqxmd.com/read/28397466/absolute-eosinophil-count-was-significantly-associated-with-serum-1-3-%C3%AE-d-glucan-in-patients-with-invasive-fungal-infections
#14
Pengfei Zhu, Jun Lv, Yongkui Kong, Hui Xu, Liang Ming
BACKGROUND: Measurement of serum (1,3)-β-D-glucan has emerged as an important diagnostic strategy for invasive fungal infections (IFI). Previous studies suggested that the eosinophil count would be related with the value of serum (1,3)-β-D-glucan. METHODS: 572 blood samples obtained from 126 patients at the First Affiliated Hospital of Zhengzhou University were analyzed. The unsuitable samples were excluded according to the patient selection. RESULTS: In our study, we found that in the 572 cumulative results, the absolute eosinophil count was significantly associated with the value of (1,3)-β-D-glucan (r = 0...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28390015/approaches-towards-the-enhanced-production-of-rapamycin-by-streptomyces-hygroscopicus-mtcc-4003-through-mutagenesis-and-optimization-of-process-parameters-by-taguchi-orthogonal-array-methodology
#15
Subhasish Dutta, Bikram Basak, Biswanath Bhunia, Ankan Sinha, Apurba Dey
The present research was conducted to define the approaches for enhanced production of rapamycin (Rap) by Streptomyces hygroscopicus microbial type culture collection (MTCC) 4003. Both physical mutagenesis by ultraviolet ray (UV) and chemical mutagenesis by N-methyl-N-nitro-N-nitrosoguanidine (NTG) have been applied successfully for the improvement of Rap production. Enhancing Rap yield by novel sequential UV mutagenesis technique followed by fermentation gives a significant difference in getting economically scalable amount of this industrially important macrolide compound...
May 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28386802/description-of-hyphopichia-buzzinii-f-a-sp-nov-and-hyphopichia-homilentoma-comb-nov-the-teleomorph-of-candida-homilentoma
#16
Lucas R Ribeiro, Ana R O Santos, Marizeth Groenewald, Maudy Th H Smith, Carla A Lara, Aristóteles Góes-Neto, Noémie Jacques, Cécile Grondin, Serge Casaregola, Marc-André Lachance, Carlos A Rosa
During studies of the yeast diversity associated with rotting wood in Brazil and fruits, plants and insects in French Guiana, three strains of a new species were isolated. Analysis of the sequences of the internal transcribed spacer (ITS)-5.8S and D1/D2 domains of the large subunit of the rRNA gene showed that this species belongs to the genus Hyphopichia and its closest relative is Candida homilentoma. These species differ by 44 nucleotide substitutions in D1/D2 sequences. A new species Hyphopichia buzzinii f...
April 6, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28384525/terphenyl-derivatives-and-drimane-phathalide-isoindolinones-from-hypoxylon-fendleri-bcc32408
#17
Chakapong Intaraudom, Nantiya Bunbamrung, Aibrohim Dramae, Nattawut Boonyuen, Palangpon Kongsaeree, Kitlada Srichomthong, Sumalee Supothina, Pattama Pittayakhajonwut
The genus Hypoxylon, a member of the family Xylariaceae, has been known to produce significant secondary metabolites in terms of chemical diversity. Moreover, the compounds isolated can also be used as chemotaxonomic characters for differentiation among the two sections, which are sect. Annulata and sect. Hypoxylon. In our continuing chemical screening programme for novel compounds, the crude extracts of H. fendleri BCC32408 gave significant chemical profiles in HPLC analyses. Thus, the chemical investigation of these crude extracts was then carried out...
April 3, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28383598/genetic-relatedness-of-peri-implants-and-buccal-candida-albicans-isolates-determined-by-rapd-pcr
#18
Adriana M Bertone, Alcira C Rosa, Natalia Nastri, Hector D Santillán, Yamila Ariza, Cristina A Iovannitti, Virginia M Jewtuchowicz
Molecular techniques have been used in recent studies to identify a wide range of potential bacterial pathogens in periimplant pockets of the oral cavity. However, the prevalence and molecular epidemiology of yeasts and species distribution related to periimplantitis are as yet unknown. The aim of this study was to determine the prevalence and distribution of yeasts in periimplant biofilm and to study genetic relatedness of Candida albicans. Yeasts recovered from periimplant biofilm samples (n=89) and buccal samples (n=120) were studied in 40 immunocompetent nonsmoking patients who visited the dental clinic of the Asociación Implantodontológica Argentina, Buenos Aires, Argentina, and had received oral rehabilitation with implants for more than five years...
December 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28382028/notable-increasing-trend-in-azole-non-susceptible-candida-tropicalis-causing-invasive-candidiasis-in-china-august-2009-to-july-2014-molecular-epidemiology-and-clinical-azole-consumption
#19
Xin Fan, Meng Xiao, Kang Liao, Timothy Kudinha, He Wang, Li Zhang, Xin Hou, Fanrong Kong, Ying-Chun Xu
Objectives: To report the notable increasing trends of C. tropicalis antifungal resistance in the past 5 years, and explore molecular epidemiology, and the relationship between clinical azoles consumption and increased resistance rate. Methods: Between August 2009 and July 2014, 507 non-duplicated C. tropicalis isolates causing invasive candidiasis were collected from 10 hospitals in China. The in vitro antifungal susceptibility of nine common agents was determined by Sensititre YeastOne™ using current available species-specific clinical breakpoint (CBPs) or epidemiological cut-off values (ECVs)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28380072/population-structure-and-molecular-genetic-characterization-of-5-flucytosine-susceptible-and-resistant-clinical-candida-dubliniensis-isolates-from-kuwait
#20
Mohammad Asadzadeh, Suhail Ahmad, Noura Al-Sweih, Ziauddin Khan
Candida dubliniensis and Candida albicans are two closely related species. Although C. dubliniensis is less pathogenic, it has a higher propensity to develop resistance to fluconazole and some strains exhibit intrinsic resistance to 5-flucytosine (5-FC). All 5-FC-resistant isolates from Kuwait were previously shown to belong to one of seven internal transcribed spacer (ITS) region of rDNA-based haplotypes. This study performed fingerprinting of C. dubliniensis isolates by multilocus sequence typing (MLST) to determine population structure of 5-FC-resistant and -susceptible strains and compared the results with data from a global collection of isolates...
2017: PloS One
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