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Candida parapsilosis

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https://www.readbyqxmd.com/read/29767615/relevance-of-antifungal-penetration-in-biofilm-associated-resistance-of-candida-albicans-and-non-albicans-candida-species
#1
Rachna Singh, Anjna Kumari, Karminder Kaur, Parul Sethi, Arunaloke Chakrabarti
The role of penetration limitation in Candida biofilm-associated antifungal resistance remains unclear. Most of the previous work has been done on Candida albicans, although non-albicans (NAC) species are also implicated in invasive candidiasis and the biofilm matrix has been shown to vary amongst different species. Only a few studies have evaluated clinical isolates. This study aimed to determine the relevance of penetration limitation in the antifungal resistance of biofilms formed by C. albicans and NAC clinical isolates, using an agar disk diffusion assay...
May 16, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29766800/antifungal-activity-gas-chromatographic-mass-spectrometric-analysis-and-in-silico-study-of-punica-granatum-peel-extracts-against-fluconazole-resistant-strains-of-candida-species
#2
Sony Paul, M Kalyani, I Kannan
AIMS: Candida species is the common cause of opportunistic fungal infections all over the world with increased mortality and morbidity especially in immunosuppressed patients. Fluconazole is the first line therapy for candidiasis. The antifungal resistance pattern in high-risk patients is a major concern. The present study was aimed to assess the anticandidal activity of Punica granatum peel against fluconazole resistant Candida species isolated from HIV patients. MATERIALS & METHODS: Ethanol, chloroform, petroleum ether and aqueous extracts of the peel of P...
May 14, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29762927/isolated-pulmonary-valve-fungal-endocarditis-with-candida-parapsilosis-management-considerations-of-a-rare-case
#3
Nirmal Guragai, Upamanyu Rampal, Rahul Vasudev, Dhaval Shah, Hiten Patel, Julius Salamera, Raja Pullatt, Fayez Shamoon
Pulmonary valve infections without the involvement of other valves account for only 1.5- 2% of all infective endocarditis cases. Isolated pulmonary valve endocarditis due to fungus is extremely rare. The case is presented of a 36-year-old male who was found to have isolated pulmonary valve endocarditis caused by a very rare organism, Candida parapsilosis, and that was solely managed with medical therapy. The patient was evaluated for three weeks of lowgrade fever, generalized rash and fatigue, and found to have C...
September 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29762861/pharmacokinetic-pharmacodynamic-analysis-of-isavuconazole-against-aspergillus-spp-and-candida-spp-in-healthy-subjects-and-patients-with-hepatic-or-renal-impairment-by-monte-carlo-simulation
#4
Xiaowei Zheng, Gaoqi Xu, Liqin Zhu, Luo Fang, Yiwen Zhang, Haiying Ding, Yinghui Tong, Jiao Sun, Ping Huang
The aim of this pharmacokinetic/pharmacodynamic (PK/PD) study is to evaluate the efficacy of various isavuconazole dosing regimens for healthy individuals and patients with hepatic or renal impairment against Aspergillus spp. and Candida spp. Monte Carlo simulations were conducted using pharmacokinetic (PK) parameters and pharmacodynamics (PD) data to determine the probabilities of target attainment and cumulative fractions of response in terms of area under the concentration curve/minimum inhibition concentration (AUC/MIC) targets of isavuconazole...
May 15, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29753529/candidemia-in-the-intensive-care-unit-a-12-year-retrospective-cohort-study-in-reunion-island
#5
G Hoarau, S Picot, J Lemant, J Peytral, P Poubeau, P Zunic, C Mohr, X Coueffe, P Gerardin, E Antok
OBJECTIVES: We aimed to describe the epidemiology of Candida bloodstream infection in an intensive care unit (ICU) in Reunion Island. METHODS: We performed a retrospective cohort study and evaluated 63 candidemia episodes, which occurred between January 2004 and December 2015 in the ICU of a University Hospital in St-Pierre. RESULTS: The incidence rate of candidemia in the ICU was estimated at 7.6%. Candida albicans was the most common yeast pathogen species recovered (54%), followed by Candida glabrata (17%), Candida tropicalis (12%) and Candida parapsilosis (10%)...
May 9, 2018: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29747356/-research-on-the-surgery-treatment-and-etiology-of-fungal-endophthalmitis
#6
H Y Zhou, J J Ye, Y Y Chen, F T Dong
Objective: To evaluate the efficacy of vitrectomy and etiological diagnosis in the treatment of fungal endophthalmitis. Methods: A retrospective survey was done on the clinical manifestation, etiological diagnosis and treatment efficacy of 15 patients (15 eyes) who had been diagnosed with fungal endophthalmitis at the inpatient department of Peking Union Medical College Hospital during 2002-2015. A total of 15 eyes of 15 patients, 3 male and 12 female patients, were included in this study. The mean age of the patients was (45...
April 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29746950/candida-periprosthetic-joint-infection-a-rare-and-difficult-to-treat-infection
#7
Laura Escolà-Vergé, Dolors Rodríguez-Pardo, Jaime Lora-Tamayo, Laura Morata, Oscar Murillo, Helem Vilchez, Luisa Sorli, Laura Guío Carrión, José Mª Barbero, Julián Palomino-Nicás, Alberto Bahamonde, Alfredo Jover-Sáenz, Natividad Benito, Rosa Escudero, Marta Fernandez- Sampedro, Rafael Pérez Vidal, Lucía Gómez, Pablo S Corona, Benito Almirante, Javier Ariza, Carles Pigrau
BACKGROUND: Candida periprosthetic joint infection (CPJI) is a rare, difficult-to-treat disease. The purpose of this study was to evaluate the clinical characteristics and outcomes of CPJI treated with various surgical and antifungal strategies. METHODS: We conducted a multicenter retrospective study of all CPJI diagnosed between 2003 and 2015 in 16 Spanish hospitals. RESULTS: Forty-three patients included: median age, 75 years, and median Charlson Comorbidity Index score, 4...
May 7, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29743306/reduction-in-the-percentage-of-clusters-of-candida-albicans-and-candida-parapsilosis-causing-candidemia-in-a-general-hospital-in-madrid-spain
#8
Pilar Escribano, Carlos Sánchez-Carrillo, Patricia Muñoz, Emilio Bouza, Jesús Guinea
The presence of clusters in units with a high incidence of candidemia suggests the need for prevention of candidemia. We analyzed the percentage of patients involved in clusters and its evolution over a large period of time in a tertiary hospital.We studied 432 patients admitted to Gregorio Marañón Hospital with candidemia caused by Candida albicans (n=276) or Candida parapsilosis (n=156) between January 2007 and December 2014. Incident isolates were genotyped. A cluster was defined as a group of ≥2 patients infected by an identical genotype; we considered clusters to be "tracking clusters" when the patients involved in the cluster were admitted to the same ward within a period of 24 months...
May 9, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29743305/five-year-national-surveillance-of-invasive-candidiasis-species-distribution-and-azole-susceptibility-from-the-china-hospital-invasive-fungal-surveillance-net-chif-net-study
#9
Meng Xiao, Zi-Yong Sun, Mei Kang, Da-Wen Guo, Kang Liao, Sharon C-A Chen, Fanrong Kong, Xin Fan, Jing-Wei Cheng, Xin Hou, Meng-Lan Zhou, Ying Li, Shu-Ying Yu, Jing-Jing Huang, He Wang, Ying-Chun Xu
Data on the epidemiology of invasive candidiasis (IC) and antifungal susceptibility of Candida isolates in China are still limited. Here we report surveillance for IC from the China Hospital Invasive Fungal Surveillance Net (CHIF-NET) Study. Sixty-five tertiary hospitals collected 8,829 Candida isolates from August 1, 2009 to July 31, 2014. Matrix-assisted laser desorption/ionization -time of flight mass spectrometry supplemented by rDNA sequencing was used to define species, and fluconazole and voriconazole susceptibilities determined by the Clinical and Laboratory Standards Institute disk diffusion method...
May 9, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29738604/five-year-profile-of-candidemia-at-an-indian-trauma-center-high-rates-of-candida-auris-blood-stream-infections
#10
Purva Mathur, Fahmi Hasan, Pradeep Kumar Singh, Rajesh Malhotra, Kamini Walia, Anuradha Chowdhary
BACKGROUND: Candidemia is a potentially fatal infection with varied distribution of Candida species and their antifungal susceptibility profiles. The recent emergence of Candida auris in invasive candidiasis is a cause for concern. This study describes the profile of candidemia at an Indian tertiary care hospital and reports the emergence of Candida auris. METHODS: All patients diagnosed as having candidemia between 2012 to 2017 were studied. The isolates were identified using conventional methods, VITEK 2 and by the MALDI-TOF MS...
May 8, 2018: Mycoses
https://www.readbyqxmd.com/read/29734032/typing-and-virulence-factors-of-food-borne-candida-spp-isolates
#11
Katarzyna Rajkowska, Alina Kunicka-Styczyńska
Food-borne yeasts, excluding yeasts used as starter cultures, are commonly considered as food spoilage microorganisms. However, the incidence of non-C. albicans Candida (NCAC) infections has increased considerably over the past two decades. Although 15 Candida species are frequently identified as pathogens, a threat to human from food-borne Candida is poorly recognized. In the present study food-borne NCAC were characterized for the virulence factors, known to be associated with yeast pathogenicity. All food-borne strains in planktonic forms and 89% in biofilm structures represented biotypes established for C...
May 3, 2018: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29732967/polysorbate-surfactants-as-drug-carriers-tween-20-amphotericin-b-conjugates-as-anti-fungal-and-anti-leishmanial-agents
#12
Vasanthan Ravichandran, Venkitasamy Kesavan, Sandrine Cojean, Philippe M Loiseau, Athipettah Jayakrishnan
BACKGROUND: Amphotericin B (AmB), a polyene antibiotic used for the treatment of fungal and leishmanial infections is virtually insoluble in water and exhibits severe toxicity. AmB has been conjugated to various soluble polymers for improving its solubility and reducing its toxicity. Conjugating AmB to a polysorbate surfactant such as polyoxyethylene sorbitan monolaurate (Tween 20), was examined to improve its solubility and reduce its toxicity. METHODS: AmB was coupled to Tween 20 via carbamate linkage at 15 and 30 wt% concentrations in high yield by activating the hydroxyl groups of the surfactant using p- nitrophenyl chloroformate...
May 3, 2018: Current Drug Delivery
https://www.readbyqxmd.com/read/29725811/genetic-diversity-and-antifungal-susceptibility-of-candida-parapsilosis-sensu-stricto-isolated-from-bloodstream-infections-in-turkish-patients
#13
Süleyha Hilmioğlu-Polat, Somayeh Sharifynia, Yasemin Öz, Müge Aslan, Nuray Gündoğdu, Ayşe Serin, Haleh Rafati, Faezeh Mohammadi, Dilek Yeşim-Metin, Aylin Döğen, Macit Ilkit, Seyedmojtaba Seyedmousavi
Candida parapsilosis sensu stricto is an emerging cause of hospital-acquired Candida infections, predominantly in southern Europe, South America, and Asia. We investigated the genetic diversity and antifungal susceptibility profile of 170 independent C. parapsilosis sensu stricto strains obtained from patients with candidemia who were treated at the Ege University Hospital in Izmir, Turkey, between 2006 and 2014. The identity of each strain was confirmed via PCR amplification and digestion of the secondary alcohol dehydrogenase-encoding gene...
May 3, 2018: Mycopathologia
https://www.readbyqxmd.com/read/29720131/intestinal-candida-parapsilosis-isolates-from-rett-syndrome-subjects-bear-potential-virulent-traits-and-capacity-to-persist-within-the-host
#14
Francesco Strati, Antonio Calabrò, Claudio Donati, Claudio De Felice, Joussef Hayek, Olivier Jousson, Silvia Leoncini, Daniela Renzi, Lisa Rizzetto, Carlotta De Filippo, Duccio Cavalieri
BACKGROUND: Rett syndrome (RTT) is a neurological disorder mainly caused by mutations in MeCP2 gene. It has been shown that MeCP2 impairments can lead to cytokine dysregulation due to MeCP2 regulatory role in T-helper and T-reg mediated responses, thus contributing to the pro-inflammatory status associated with RTT. Furthermore, RTT subjects suffer from an intestinal dysbiosis characterized by an abnormal expansion of the Candida population, a known factor responsible for the hyper-activation of pro-inflammatory immune responses...
May 2, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29718650/metal-tio2-nanotube-layers-for-the-treatment-of-dental-implant-infections
#15
Agata Roguska, Anna Belcarz, Justyna Zalewska, Marcin Holdynski, Mariusz Andrzejczuk, Marcin Pisarek, Grazyna Ginalska
Titanium oxide nanotubes layers with silver and zinc nanoparticles are attracting increasing attention in the design of bone and dental implants, due to their antimicrobial potential and their ability to control host cell adhesion, growth and differentiation. However, recent reports indicate that the etiology of dental infections is more complex than has been previously considered. Therefore, the antimicrobial potential of dental implants should be evaluated against at least several different microorganisms cooperating in human mouth colonization...
May 2, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29717970/role-of-biofilm-morphology-matrix-content-and-surface-hydrophobicity-in-the-biofilm-forming-capacity-of-various-candida-species
#16
Anjna Kumari, Sakshi Mankotia, Bhawna Chaubey, Monika Luthra, Rachna Singh
The present study aimed to evaluate the role of biofilm morphology, matrix content and surface hydrophobicity in the biofilm-forming capacity of Candida albicans and non-albicans Candida (NAC) spp. Biofilm formation was determined by microtitre plate assay and bright-field and scanning electron microscopy. The matrix carbohydrates, proteins and e-DNA were quantified by phenol-sulfuric acid, bicinchoninic acid and UV spectroscopy, respectively. Specific glycosyl residues were detected by dot blot. The cell-surface hydrophobicity was determined by hydrocarbon adhesion assay...
May 2, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29715620/the-innovation-of-cryo-sem-freeze-fracturing-methodology-demonstrated-on-high-pressure-frozen-biofilm
#17
Kamila Hrubanova, Jana Nebesarova, Filip Ruzicka, Vladislav Krzyzanek
In this study we present an innovative method for the preparation of fully hydrated samples of microbial biofilms of cultures Staphylococcus epidermidis, Candida parapsilosis and Candida albicans. Cryo-scanning electron microscopy (cryo-SEM) and high-pressure freezing (HPF) rank among cutting edge techniques in the electron microscopy of hydrated samples such as biofilms. However, the combination of these techniques is not always easily applicable. Therefore, we present a method of combining high-pressure freezing using EM PACT2 (Leica Microsystems), which fixes hydrated samples on small sapphire discs, with a high resolution SEM equipped with the widely used cryo-preparation system ALTO 2500 (Gatan)...
April 22, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29712651/resistance-to-echinocandins-in-candida-can-be-detected-by-performing-the-etest-directly-on-blood-culture-samples
#18
María Ángeles Bordallo-Cardona, Laura Judith Marcos-Zambrano, Carlos Sánchez-Carrillo, Emilio Bouza, Patricia Muñoz, Pilar Escribano, Jesús Guinea
Background: We examined the rapid evaluation of susceptibility to echinocandins in Candida spp. using the Etest performed directly on positive blood cultures and anidulafungin-containing agar plates. Methods: We prospectively collected 80 positive blood cultures (Bactec™-FX system, Becton-Dickinson, Cockeysville, Maryland, USA) with echinocandin-susceptible Candida spp (n=60) and echinocandin-intermediate C. parapsilosis (n=20) from patients with candidemia. Additionally, blood culture bottles of nonfungemic/bacteremic patients were spiked with 35 echinocandin-resistant Candida spp...
April 30, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29708641/a-comparative-reengineering-study-of-cpadh5-through-iterative-and-simultaneous-multi-site-saturation-mutagenesis
#19
Yunus Ensari, Gaurao V Dhoke, Mehdi D Davari, Anna Joelle Ruff, Ulrich Schwaneberg
Positions identified in directed evolution campaigns or by (semi-) rational design can be recombined iteratively or simultaneously. Iterative recombination (CAST method) yielded many success stories and is beneficially used if screening capabilities are limited (four iterative SSMs generated 20x4= 80 different enzyme variants). Simultaneous site saturation mutagenesis offers a significantly higher diversity (204=160000 variants) and enables to find higher improvements especially if the selected positions are in close proximity to each other (cooperative effects)...
April 30, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29707676/mycological-aspects-of-onychomycosis-in-khuzestan-province-iran-a-shift-from-dermatophytes-towards-yeasts
#20
Mahnaz Fatahinia, Sima Jafarpour, Abdollah Rafiei, Simin Taghipour, Koichi Makimura, Ali Rezaei-Matehkolaei
Background and Purpose: Onychomycosis is fungal infection of the nails with an overall increasing incidence, worldwide. The epidemiological aspects of onychomycosis in Khuzestan, Iran, have not been established. In this study, we aimed to evaluate the clinical and mycological status of fungal nail infection in Khuzestan Province, Iran. Materials and Methods: The study population included 433 patients (143 males vs. 290 females). Nail samples underwent primary direct microscopy and culture...
December 2017: Advances in Medical Mycology (Iran)
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