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Candida parapsilosis

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https://www.readbyqxmd.com/read/28812224/risk-factors-for-totally-implantable-venous-access-device-associated-complications-in-cystic-fibrosis
#1
C McCarthy, O O'Carroll, M E O'Brien, T McEnery, A Franciosi, C Gunaratnam, N G McElvaney
BACKGROUND: Candidaemia is an important nosocomial infection, seen frequently in immunocompromised and critically ill patients and increasingly recognised in cystic fibrosis (CF) patients with totally implantable venous access devices (TIVADs). This study aims to investigate the incidence and risk factors for the development of TIVAD-associated candidaemia and to assess the rate of TIVAD-related complications in CF patients. METHODS: A 10-year retrospective study was carried out on adult CF patients attending a single centre...
August 15, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28808289/gene-editing-in-clinical-isolates-of-candida-parapsilosis-using-crispr-cas9
#2
Lisa Lombardi, Siobhán A Turner, Fang Zhao, Geraldine Butler
Candida parapsilosis is one of the most common causes of candidiasis, particularly in the very young and the very old. Studies of gene function are limited by the lack of a sexual cycle, the diploid genome, and a paucity of molecular tools. We describe here the development of a plasmid-based CRISPR-Cas9 system for gene editing in C. parapsilosis. A major advantage of the system is that it can be used in any genetic background, which we showed by editing genes in 20 different isolates. Gene editing is carried out in a single transformation step...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801727/inflammation-induced-by-candida-parapsilosis-in-thp-1-cells-and-human-peripheral-blood-mononuclear-cells-pbmcs
#3
Zhimin Duan, Xu Chen, Leilei Du, Caixia Liu, Rong Zeng, Qing Chen, Min Li
Candida parapsilosis is one of the most prevalent Candida species; however, the inflammation response induced by C. parapsilosis and related mechanism received few studies. In this study, we analyzed the pro-inflammatory cytokine responses evoked by C. parapsilosis in human peripheral blood mononuclear cells (PBMCs) and THP-1 cells, determined the signal pathways related to the inflammation response and investigated the expression of dectin-1 modified with C. parapsilosis. Exposure of PBMCs and THP-1 cells to C...
August 11, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28771588/mtl-genotypes-phenotypic-switching-and-susceptibility-profiles-of-candida-parapsilosis-species-group-compared-to-lodderomyces-elongisporus
#4
Aylin Döğen, Banu Metin, Macit Ilkit, G Sybren de Hoog, Joseph Heitman
Reference isolates of Candida parapsilosis (n = 8), Candida metapsilosis (n = 6), Candida orthopsilosis (n = 7), and Lodderomyces elongisporus (n = 11) were analyzed to gain insight into their pathobiology and virulence mechanisms. Initial evaluation using BBL Chromagar Candida medium misidentified L. elongisporus isolates as C. albicans. Polymerase chain reaction analysis of isolate MTL idiomorphs revealed that all C. parapsilosis isolates were MTLa homozygous and no MTL α1, α2, a1, or a2 gene was detected in L...
2017: PloS One
https://www.readbyqxmd.com/read/28770873/prevalence-and-antifungal-susceptibility-of-candida-species-in-a-tertiary-care-hospital-in-islamabad-pakistan
#5
Umber Tasneem, Maryam Tahir Siddiqui, Rani Faryal, Aamer Ali Shah
OBJECTIVE: To determine the prevalence and antifungal susceptibility pattern of Candida species. METHODS: This prospective, cross-sectional study was conducted at the Quaid-e-Azam International Hospital, Islamabad, Pakistan, from January 2014 to February 2015, and comprised different clinical samples which were analysed for various types of microbial infections. Species differentiation was confirmed by biochemical and molecular methods. Antifungal susceptibility against amphotericin B, fluconazole and voriconazole was determined by Clinical and Laboratory Standards Institute M44-A disk diffusion method...
July 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28768479/evaluation-of-candidemia-in-epidemiology-and-risk-factors-among-cancer-patients-in-a-cancer-center-of-china-an-8-year-case-control-study
#6
Ding Li, Rui Xia, Qing Zhang, Changsen Bai, Zheng Li, Peng Zhang
BACKGROUND: Candidemia is the worldwide life-threaten disease, especially in cancer patients. This study was aimed to identify and evaluate the risk factors of candidemia in cancer patients, which will prompt the improvement on current therapeutic strategies and prognosis. METHODS: A retrospective, case-control study was conducted from inpatients of Tianjin Medical University Cancer Institute and Hospital, during 2006 to 2013. Analyses were performed between cancer patients with candidemia as study case, and patients with bacterial bloodstream infections as control...
August 3, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28758337/changes-in-the-distribution-of-colonising-and-infecting-candida-spp-isolates-antifungal-drug-consumption-and-susceptibility-in-a-french-intensive-care-unit-a-10-year-study
#7
Milène Sasso, Claire Roger, Magali Sasso, Hélène Poujol, Saber Barbar, Jean-Yves Lefrant, Laurence Lachaud
Monitoring fungal ecology and resistance to antifungal agents within intensive care units (ICU) is essential for the management of invasive fungal infections. Therefore, a retrospective descriptive study was carried in the ICU of Nimes University Hospital, France, from 2007 to 2016. As the majority of invasive fungal infections in ICU are caused by Candida species, the study objectives were to describe Candida species distribution, to assess candidaemia incidence and to monitor the antifungal drug susceptibility of Candida isolates and the consumption of antifungal agents...
July 31, 2017: Mycoses
https://www.readbyqxmd.com/read/28747370/survival-persistence-and-isolation-of-the-emerging-multidrug-resistant-pathogenic-yeast-candida-auris-on-a-plastic-healthcare-surface
#8
Rory M Welsh, Meghan L Bentz, Alicia Shams, Hollis Houston, Amanda Lyons, Laura J Rose, Anastasia P Litvintseva
The emerging multidrug-resistant pathogenic yeast Candida auris represents a serious threat to global health. Unlike most other Candida species, this organism appears to be commonly transmitted within healthcare facilities and is capable of causing healthcare-associated outbreaks. To better understand the epidemiology of this emerging pathogen we investigated the ability of C. auris to persist on plastic surfaces common in healthcare settings and compared with that of Candida parapsilosis, a species known to colonize the skin and plastics...
July 26, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28734712/-candidemia-in-pediatrics-species-distribution-and-antifungal-susceptibility
#9
Luciana B Guzzetti, Cecilia M Vescina, M Florencia Gil, Blanca M Gatti
Serious infections caused by Candida yeasts are frequent in the hospital population. Due to differences in species distribution and antifungal susceptibility testing depending on the geographic area and the type of patient, it is important to study the epidemiology of each institution. For this purpose, we conducted a retrospective, descriptive study on the occurrence of candidemia in the Children's Hospital "Superiora Sor María Ludovica" of the city of La Plata. In a 6-year period (2010-2015), 177 candidemia episodes were recorded...
July 19, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28730719/anticandidal-activity-of-extracts-and-a-novel-compound-amnomopin-isolated-from-petriella-setifera
#10
Amani S Awaad, Nour K Al-Aonazi, Monerah R Al-Othman, Mohamed E Zain, Reham M El-Meligy, Nabil El-Sayed
A novel triterpenoidal compound named 'amnomopin' (3β-diglucoside-5,12-28-oic acid), which is named IUPAC as 3-O-(2' ➔ 1″diglucoside)1,2,3,4,4a,5,6,6a,6b,7,9,10,11,12,12a,12b,13,14b-octadecahydro-10-hydroxy-2,2,6a,6b,9,9,12a-heptamethylpicene-4a-carboxylic acid, was isolated from the extract Petriella setifera. The total alcoholic extract of P. setifera showed a great activity against clinically isolated Candida species, including Candida albicans, Candida dubliniensis, Candida famata, Candida glabrata, Candida inconspicua, Candida kefyr, Candida krusei, Candida norvegensis, Candida parapsilosis and Candida tropicalis...
July 20, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28727189/inversion-of-cpadh5-enantiopreference-and-altered-chain-length-specificity-for-methyl-3-hydroxyalkanoates
#11
Yunus Ensari, Gaurao V Dhoke, Mehdi D Davari, Marco Bocola, Anna Joelle Ruff, Ulrich Schwaneberg
Expanding the substrate scope of enzymes opens up new routes for synthesis of valuable chemicals. Ketone-functionalized fatty acid derivatives and corresponding chiral alcohols are valuable building blocks for the synthesis of a variety of chemicals including pharmaceuticals. The alcohol dehydrogenase from Candida parapsilosis (cpADH5) catalyzes the reversible oxidations of chiral alcohols and has a broad substrate range; a challenge for cpADH5 is to convert alcohols with small substituents (methyl or ethyl) next to the oxidized alcohol moiety...
July 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28714286/mosquitoes-can-harbour-yeasts-of-clinical-significance-and-contribute-to-their-environmental-dissemination
#12
Jovana Bozic, Aida Capone, Dario Pediconi, Priscilla Mensah, Alessia Cappelli, Matteo Valzano, Maria Vittoria Mancini, Patrizia Scuppa, Elena Martin, Sara Epis, Paolo Rossi, Guido Favia, Irene Ricci
There is still a lack of studies on fungal microbiota in mosquitoes, compared to the number available on bacterial microbiota. This study reports the identification of yeasts of clinical significance in laboratory mosquito species: Anopheles gambiae, Anopheles stephensi, Culex quinquefasciatus, Aedes albopictus and Aedes aegypti. Among the yeasts isolated, we focused on the opportunistic pathogen Candida parapsilosis, since there is a need to better understand breakthrough candidaemia with resistance to the usual antifungals, which requires careful consideration in the broad-spectrum therapy, as documented in many clinical reports...
July 17, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28713338/investigation-of-och1-in-the-virulence-of-candida-parapsilosis-using-a-new-neonatal-mouse-model
#13
Katalin Csonka, Máté Vadovics, Annamária Marton, Csaba Vágvölgyi, Erik Zajta, Adél Tóth, Renáta Tóth, Csaba Vizler, László Tiszlavicz, Héctor M Mora-Montes, Attila Gácser
Candida parapsilosis is an opportunistic human fungal pathogen that poses a serious threat to low birth weight neonates, particularly at intensive care units. In premature infants, the distinct immune responses to Candida infections are not well understood. Although several in vivo models exist to study systemic candidiasis, only a few are available to investigate dissemination in newborns. In addition, the majority of related studies apply intraperitoneal infection rather than intravenous inoculation of murine infants that may be less efficient when studying systemic invasion...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28700656/unexpected-effects-of-azole-transporter-inhibitors-on-antifungal-susceptibility-in-candida-glabrata-and-other-pathogenic-candida-species
#14
Yohsuke Nagayoshi, Taiga Miyazaki, Shintaro Shimamura, Hironobu Nakayama, Asuka Minematsu, Shunsuke Yamauchi, Takahiro Takazono, Shigeki Nakamura, Katsunori Yanagihara, Shigeru Kohno, Hiroshi Mukae, Koichi Izumikawa
The pathogenic fungus Candida glabrata is often resistant to azole antifungal agents. Drug efflux through azole transporters, such as Cdr1 and Cdr2, is a key mechanism of azole resistance and these genes are under the control of the transcription factor Pdr1. Recently, the monoamine oxidase A (MAO-A) inhibitor clorgyline was shown to inhibit the azole efflux pumps, leading to increased azole susceptibility in C. glabrata. In the present study, we have evaluated the effects of clorgyline on susceptibility of C...
2017: PloS One
https://www.readbyqxmd.com/read/28699797/candidemia-and-invasive-candidiasis-among-hospitalized-neonates-and-pediatric-patients
#15
Rachel Harrington, Sylvia L Kindermann, Qingjiang Hou, Robert J Taylor, Nkechi Azie, David L Horn
OBJECTIVE: To investigate the epidemiology, treatment, length of stay (LOS) and costs for neonatal and pediatric inpatients with invasive candidiasis (IC). METHODS: The Cerner Health Facts Database was used to assess inpatients (2005-2014) identified by positive blood or cerebrospinal fluid (CSF) Candida cultures. Log-transformed LOS and cost were examined in candidemia-only patients (n= 191) using multivariable linear regression. RESULTS: 202 patients had a positive culture (blood: n = 192; CSF: n = 10; both: n = 2)...
July 12, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28699287/an-alternative-method-for-the-analysis-of-melanin-production-in-cryptococcus-neoformans-sensu-lato-and-cryptococcus-gattii-sensu-lato
#16
Raimunda S N Brilhante, Jaime D A España, Lucas P de Alencar, Vandbergue S Pereira, Débora de S C M Castelo-Branco, Waldemiro de A Pereira-Neto, Rossana de A Cordeiro, José J C Sidrim, Marcos F G Rocha
Melanin is an important virulence factor for several microorganisms, including Cryptococcus neoformans sensu lato and Cryptococcus gattii sensu lato, thus, the assessment of melanin production and its quantification may contribute to the understanding of microbial pathogenesis. The objective of this study was to standardise an alternative method for the production and indirect quantification of melanin in C. neoformans sensu lato and C. gattii sensu lato. Eight C. neoformans sensu lato and three C. gattii sensu lato, identified through URA5 methodology, Candida parapsilosis ATCC 22019 (negative control) and one Hortaea werneckii (positive control) were inoculated on minimal medium agar with or without L-DOPA, in duplicate, and incubated at 35°C, for 7 days...
July 12, 2017: Mycoses
https://www.readbyqxmd.com/read/28699258/cytotoxic-peptides-with-insulin-releasing-activities-from-skin-secretions-of-the-italian-stream-frog-rana-italica-ranidae
#17
J Michael Conlon, Vishal Musale, Samir Attoub, Maria Luisa Mangoni, Jérôme Leprince, Laurent Coquet, Thierry Jouenne, Yasser H A Abdel-Wahab, Peter R Flatt, Andrea C Rinaldi
Peptidomic analysis of norepinephrine-stimulated skin secretions from Italian stream frog Rana italica led to the purification and characterization of two host-defense peptides differing by a single amino acid residue belonging to the brevinin-1 family (brevinin-1ITa and -1ITb), a peptide belonging to the temporin family (temporin-ITa) and a component identified as prokineticin Bv8. The secretions contained relatively high concentrations of the methionine-sulphoxide forms of brevinin-1ITa and -1ITb suggesting that these peptides may have a role as antioxidants in the skin of this montane frog...
July 11, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28689871/cd101-a-long-acting-echinocandin-and-comparator-antifungal-agents-tested-against-a-global-collection-of-invasive-fungal-isolates-in-the-sentry-2015-antifungal-surveillance-program
#18
Michael A Pfaller, Shawn A Messer, Paul R Rhomberg, Mariana Castanheira
CD101 is a novel echinocandin with exceptional chemical stability and long-acting pharmacokinetics. The activity of CD101 and comparators was evaluated using CLSI broth microdilution methods against 713 invasive fungal isolates, including 589 Candida spp. (6 species), 14 C. neoformans, 97 A. fumigatus and 13 A. flavus species complex collected worldwide during 2015. All C. tropicalis, C. krusei and C. dubliniensis, 99.7% of C. albicans and 98.3% of C. glabrata were inhibited by ≤0.12 µg/mL of CD101, and these isolates were susceptible/wild type to other echinocandins using CLSI clinical breakpoint and epidemiological cutoff value (ECV) interpretive criteria...
July 6, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28686553/candidaemia-in-a-tertiary-care-academic-hospital-in-italy-the-impact-of-c-parapsilosis-complex-on-the-species-distribution-and-antifungal-susceptibility
#19
Maria Cristina Ghezzi, Grazia Brunetti, Valeria Visconti, Alessandra Giordano, Giammarco Raponi
PURPOSE: To analyse the species distribution and the susceptibility profiles to the major antifungal agents of Candida isolated from bloodstream infections (BSIs) in both intensive care units (ICUs) and non-ICU wards in a tertiary care hospital in Italy from 2010 until 2015. METHODOLOGY: Episodes of Candida BSI were recorded in a retrospective observational cohort study. Yeasts were isolated from both blood and intravascuIar devices (IVDs) and their susceptibility to antifungal drugs was tested using the microdilution method...
July 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28681025/candidemia-in-patients-with-prolonged-fever-in-kashan-iran
#20
R Razzaghi, M Momen-Heravi, M Erami, M Nazeri
BACKGROUND AND PURPOSE: Candida species are considered a common cause of fungal blood stream infections, which are associated with considerable mortality and morbidity rates, especially in the admitted and immunocompromised patients. Despite the increase in new and available antifungal agents, the emergence of resistant strains is growing. Regarding this, the aim of the present study was to assess the fungal epide-miology of candidemia and the antifungal susceptibility patterns against five current antifungal agents among the patients with prolonged fever, who were admitted to Beheshti Educational Hospital, Kashan, Iran...
September 2016: Advances in Medical Mycology (Iran)
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