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https://www.readbyqxmd.com/read/29346565/apigenin-induces-cell-shrinkage-in-candida-albicans-by-membrane-perturbation
#1
Heejeong Lee, Eun-Rhan Woo, Dong Gun Lee
Apigenin, a natural flavone, has been well characterized for its their anticarcinogenic property; however, its bioactivity against pathogenic fungi has not been investigated in detail. In the present study, we examined the antifungal activity and mode of action of apigenin. Apigenin inhibited the growth of fungal pathogens, which induced superficial infection and reduced biofilm mass. Three-dimensional flow cytometric analysis demonstrated that apigenin induced morphological changes, especially cell shrinkage, in Candida albicans...
January 16, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29346561/floricolin-c-elicits-intracellular-ros-accumulation-and-disrupts-mitochondria-to-exert-fungicidal-action
#2
Ming Zhang, Wenqiang Chang, Hongzhuo Shi, Ying Li, Sha Zheng, Wei Li, Hongxiang Lou
Candida albicans, one most prevalent fungal pathogen, causes severe mucosal and invasive infections in predisposed individuals. The rise of fungal infection and drug-resistance demands the development of novel antifungal agents. In this study, we observed that floricolin C (FC), a p-terphenyl pigment from an endolichenic fungus, killed C. albicans cells at planktonic state or within biofilms through reactive oxygen species (ROS) accumulation. Further test revealed that FC could directly damage the mitochondria to cause ROS accumulation...
January 15, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29345117/candida-auris-a-systematic-review-and-meta-analysis-of-current-updates-on-an-emerging-multidrug-resistant-pathogen
#3
John Osei Sekyere
From 2009, Candida auris has emerged as a multidrug-resistant ascomycete yeast pathogen with the capacity for easy transmission between patients and hospitals, as well as persistence on environmental surfaces. Its association with high mortalities, breakthrough and persistent candidaemia, inconsistencies in susceptibility testing results, misidentification by available commercial identification systems and treatment failure, complicates its management and detection. Within the last nine years, C. auris has been increasingly reported from far-Eastern Asia, the Middle East, Africa, Europe, South and North America with substantial fatalities and misidentification...
January 18, 2018: MicrobiologyOpen
https://www.readbyqxmd.com/read/29342119/novel-hybrid-formulations-based-on-thiourea-derivatives-and-core-shell-fe%C3%A2-o%C3%A2-c18-nanostructures-for-the-development-of-antifungal-strategies
#4
Carmen Limban, Alexandru Vasile Missir, Miron Teodor Caproiu, Alexandru Mihai Grumezescu, Mariana Carmen Chifiriuc, Coralia Bleotu, Luminita Marutescu, Marius Toma Papacocea, Diana Camelia Nuta
The continuously increasing global impact of fungal infections is requiring the rapid development of novel antifungal agents. Due to their multiple pharmacological activities, thiourea derivatives represent privileged candidates for shaping new drugs. We report here the preparation, physico-chemical characterization and bioevaluation of hybrid nanosystems based on new 2-((4-chlorophenoxy)methyl)-N-(substituted phenylcarbamo-thioyl)benzamides and Fe₃O₄@C18 core@shell nanoparticles. The new benzamides were prepared by an efficient method, then their structure was confirmed by spectral studies and elemental analysis and they were further loaded on Fe₃O₄@C18 nanostructures...
January 17, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29342100/modulation-of-the-fungal-host-interaction-by-the-intra-species-diversity-of-c-albicans
#5
REVIEW
Christina Braunsdorf, Salomé LeibundGut-Landmann
The incidence of human infections caused by the opportunistic fungal pathogen Candida albicans is on the rise due to increasing numbers of immunosuppressed patients. The importance of the immune system in preventing overgrowth of the colonizing fungus and thereby limiting infection is well recognized and host protective mechanisms widely investigated. Only recently, it was recognized that the natural diversity in the fungal species could also influence the outcome of the interaction between the fungus and the host...
January 17, 2018: Pathogens
https://www.readbyqxmd.com/read/29339423/immune-protection-against-lethal-fungal-bacterial-intra-abdominal-infections
#6
Elizabeth A Lilly, Melanie Ikeh, Evelyn E Nash, Paul L Fidel, Mairi C Noverr
Polymicrobial intra-abdominal infections (IAIs) are clinically prevalent and cause significant morbidity and mortality, especially those involving fungi. Our laboratory developed a mouse model of IAI and demonstrated that intraperitoneal inoculation with Candida albicans or other virulent non-albicans Candida (NAC) species plus Staphylococcus aureus resulted in 70 to 80% mortality in 48 to 72 h due to robust local and systemic inflammation (sepsis). Surprisingly, inoculation with Candida dubliniensis or Candida glabrata with S...
January 16, 2018: MBio
https://www.readbyqxmd.com/read/29339278/amphotericin-b-loaded-sulphonated-chitosan-nanoparticles-for-targeting-macrophages-to-treat-intracellular-candida-glabrata-infections
#7
Murali Sandhya, Aparna V, Suresh Maneesha K, Biswas Raja, Jayakumar R, Sathianarayanan S
The current study assesses the potential of functionalised chitosan nanoparticles (CNPs) for proficient macrophage delivery of amphotericin B (AmpB) for the management of Candida glabrata fungemia. Chitosan was functionalised by the method of sulfation by using chlorosulfonic acid and the developed compound was confirmed by FTIR, 1H NMR and degree of sulfation and CHNS analysis. Amphotericin B encapsulated sulfated chitosan (AmpB-SCNPs), when characterized showed a hydrodynamic diameter of 310 ± 14 nm and zeta potential of 41...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29339229/a-rare-case-of-c-glabrata-spondylodiscitis-case-report-and-literature-review
#8
REVIEW
Manfredi Gagliano, Costanza Marchiani, Giulia Bandini, Paolo Bernardi, Nicolas Palagano, Elisa Cioni, Martina Finocchi, Silvia Bellando Randone, Alberto Moggi Pignone
BACKGROUND: Spondylodiscitis are vertebral column infections whose incidence is rising due to an increase of the susceptible population and improved ascertainment. They have been associated with a wide range of microorganisms. Fungal spondylodiscitis is uncommon (0.5%-1.6%) and strongly associated with immunodepression and diabetes (Gouliouris et al., 2010). We present a rare case of Candida glabrata spondylodiscitis in a non neutropenic diabetic patient with the review of the literature...
January 12, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29339049/genotype-and-homology-analysis-of-pathogenic-and-colonization-strains-of-candida-albicans-from-hospitalized-neonates
#9
Jin-Zhen Su, Yu-Lan Yang, Rong Rong, Ben-Qing Wu
BACKGROUND: To detect the genotypes of pathogenic and colonization Candida albicans strains and to reveal whether there was a homologous relationship between these strains. METHODS: Pathogenic and colonization isolates were collected from infants in the NICU of Shenzhen People's Hospital (Shenzhen, People's Republic of China). rDNA identification, multilocus sequence typing (MLST), and multi-loci variable number tandem repeat analysis (MLVA) were used for species confirmation, strain identification, phylogenetic tree clustering, and assessment of homology among the pathogenic and colonization strains...
December 26, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/29332258/photodynamic-antimicrobial-chemotherapy-pact-using-toluidine-blue-inhibits-both-growth-and-biofilm-formation-by-candida-krusei
#10
Bruna Graziele Marques da Silva, Moisés Lopes Carvalho, Isabela Bueno Rosseti, Stella Zamuner, Maricilia Silva Costa
Among non-albicans Candida species, the opportunistic pathogen Candida krusei emerges because of the high mortality related to infections produced by this yeast. The Candida krusei is an opportunistic pathogen presenting an intrinsic resistance to fluconazol. In spite of the reduced number of infections produced by C. krusei, its occurrence is increasing in some groups of patients submitted to the use of fluconazol for prophylaxis. Photodynamic antimicrobial chemotherapy (PACT) is a potential antimicrobial therapy that combines visible light and a nontoxic dye, known as a photosensitizer, producing reactive oxygen species (ROS) that can kill the treated cells...
January 13, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/29331369/equisetum-telmateia-extracts-chemical-compositions-antioxidant-activity-and-antimicrobial-effect-on-the-growth-of-some-pathogenic-strain-causing-poisoning-and-infection
#11
Marzie Yeganegi, Farideh Tabatabaei Yazdi, Seyed Ali Mortazavi, Javad Asili, Behrooz Alizadeh Behbahani, Adel Beig Babaei
The aerial parts of Equisetum telmateia have been used as a source of biologically active compounds to treat inflammatory, diarrhea, stomach-ache, eczema and mouth infections in traditional medicine. The aim of this work is to evaluate the extraction yield, chemical compositions, antioxidant activity and antimicrobial activity of E. telmateia extracts on Staphylococcus aureus, Bacillus cereus, Escherichia coli, Salmonella typhi and Candida albicans. Chemical compositions E. telmateia was analyzed by high performance liquid chromatography (HPLC) using a C18 column...
January 10, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29330691/bis-guanylhydrazones-as-efficient-anti-candida-compounds-through-dna-interaction
#12
Jelena Lazić, Vladimir Ajdačić, Sandra Vojnovic, Mario Zlatović, Marina Pekmezovic, Selene Mogavero, Igor Opsenica, Jasmina Nikodinovic-Runic
Candida spp. are leading causes of opportunistic mycoses, including life-threatening hospital-borne infections, and novel antifungals, preferably aiming targets that have not been used before, are constantly needed. Hydrazone- and guanidine-containing molecules have shown a wide range of biological activities, including recently described excellent antifungal properties. In this study, four bis-guanylhydrazone derivatives (BG1-4) were generated following a previously developed synthetic route. Anti-Candida (two C...
January 12, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29325916/proanthocyanidin-polymeric-tannins-from-stryphnodendron-adstringens-are-effective-against-fluconazole-resistant-candida-spp-and-treat-vaginal-candidiasis
#13
Aline Luiza Duarte de Freitas, Vanessa Kaplum, Diego Conrado Pereira Rossi, Leandro Buffoni Roque da Silva, Márcia de Souza Carvalho Melhem, Carlos Pelleschi Taborda, João Carlos Palazzo de Mello, Celso Vataru Nakamura, Kelly Ishida
ETHNOPHARMACOLOGICAL RELEVANCE: The stem bark of Stryphnodendron adstringens (Mart.) Coville is popularly used as anti-inflammatory, astringent and in the treatment of wounds and vaginal infections. Several pharmacological activities have been scientifically proven by "in vitro" and "in vivo" experimental assays for antibacterial, antiviral, antiprotozoan, anti-inflammatory and antioxidant. AIM OF THE STUDY: We investigated whether proanthocyanidin polymeric tannins from the Stryphnodendron adstringens steam bark with antifungal activity against Candida albicans in vitro are also active against planktonic and biofilm cells of Candida non-albicans (CNA, including fluconazole-resistant isolates) and are capable of controlling Candida vaginitis in vivo...
January 8, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29325218/equal-candida-score-an-ecmm-score-derived-from-current-guidelines-to-measure-quality-of-clinical-candidemia-management
#14
Sibylle C Mellinghoff, Martin Hoenigl, Philipp Koehler, Anil Kumar, Katrien Lagrou, Cornelia Lass-Flörl, Jacques F Meis, Vidya Menon, Riina Rautemaa-Richardson, Oliver A Cornely
Candida species frequently cause blood stream infections and are reported to be the third to tenth most commonly isolated pathogens. Guidelines and standardized treatment algorithms provided by professional organisations aim to facilitate decision-making regarding diagnosis, management, and treatment of candidemia. In routine clinical practise, however, it may be challenging to comply with these guidelines. The reasons include lack of familiarity or feasibility to adherence, but also their length and complexity...
January 11, 2018: Mycoses
https://www.readbyqxmd.com/read/29325080/dst659-genotype-of-candida-albicans-showing-positive-association-between-biofilm-formation-and-dominance-in-taiwan
#15
Jang-Jih Lu, Hsiu-Jung Lo, Yen-Mu Wu, Jia-Yuan Chang, Yin-Zhi Chen, Shao-Hung Wang
Based on multiple locus sequence typing, we previously found that DST659 and DST693 were dominant genotypes of Candida albicans among the bloodstream isolates at Chang-Gung Memorial Hospital at Linkou. Biofilm-forming activity, which is critical for C. albicans virulence, probably contributed to the dominance of antifungal sensitive isolates in hospital. Both in vitro membrane weighting and in vivo zebrafish egg infection assays were used to evaluate the biofilm-forming activity of DST659 and DST693 genotypes...
January 8, 2018: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/29324651/incidence-microbiological-profile-and-risk-factors-of-healthcare-associated-infections-in-intensive-care-units-a-10-year-observation-in-a-provincial-hospital-in-southern-poland
#16
Małgorzata Kołpa, Marta Wałaszek, Agnieszka Gniadek, Zdzisław Wolak, Wiesław Dobroś
Healthcare-associated infections (HAIs) occurring in patients treated in an intensive care unit (ICU) are serious complications in the treatment process. Aetiological factors of these infections can have an impact on treatment effects, treatment duration and mortality. The aim of the study was to determine the prevalence and microbiological profile of HAIs in patients hospitalized in an ICU over a span of 10 years. The active surveillance method was used to detect HAIs in adult patients who spent over 48 h in a general ICU ward located in southern Poland between 2007 and 2016...
January 11, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29324336/new-1-5-and-2-5-disubstituted-tetrazoles-dependent-activity-towards-surface-barrier-of-candida-albicans
#17
Monika Staniszewska, Małgorzata Gizińska, Ewa Mikulak, Klaudia Adamus, Mirosława Koronkiewicz, Edyta Łukowska-Chojnacka
A series of novel tetrazole derivatives was synthetized using N-alkylation or Michael-type addition reactions, and screened for their fungistatic potential against Candida albicans (the lack of endpoint = 100%). Among them, the selected compounds 2d, 4b, and 6a differing in substituents at the tetrazole ring were non-toxic to Galleria mellonella larvae in vivo and exerted slight toxicity against Caco-2 in vitro (CC50 at 256 μg/mL). An antagonistic effect of tetrazole derivatives 2d, 4b, and 6a respectively in combination with Fluconazole was shown using the checker board and colorimetric methods (fractional inhibitory concentration indexes FICIs >1)...
December 30, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29324230/neutrophils-cause-an-intravascular-traffic-jam
#18
Martin S Minns, Eric Pearlman
Neutrophil swarming is defined by large numbers of cells simultaneously and rapidly migrating to a site of injury or infection. In this issue of Cell Host & Microbe, Lee et al. (2018) demonstrate that intravascular swarming of neutrophils occurs in response to Candida albicans infection and causes vascular occlusion and pathological sequelae.
January 10, 2018: Cell Host & Microbe
https://www.readbyqxmd.com/read/29323559/reply-to-letter-to-editor-regarding-risk-of-bacterial-vaginosis-trichomonas-vaginalis-and-candida-albicans-infection-among-new-users-of-combined-hormonal-contraception-compared-to-levonorgestrel-releasing-intrauterine-system
#19
Mohamed Rezk, Tarek Sayyed, Alaa Masood, Ragab Dawood
No abstract text is available yet for this article.
January 11, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29322386/independent-risk-factors-for-mortality-in-critically-ill-patients-with-candidemia-on-italian-internal-medicine-wards
#20
Francesco Sbrana, Emanuela Sozio, Matteo Bassetti, Andrea Ripoli, Filippo Pieralli, Anna Maria Azzini, Alessandro Morettini, Carlo Nozzoli, Maria Merelli, Sebastiano Rizzardo, Giacomo Bertolino, Davide Carrara, Claudio Scarparo, Ercole Concia, Francesco Menichetti, Carlo Tascini
Candida is an increasing cause of bloodstream infection and is associated with significant morbidity and mortality. The aim of our study is to analyze risk factors for short-term mortality in patients with bloodstream Candida spp. infections admitted to Internal Medicine Wards (IMWs). This was a retrospective case-control study between January 2012 and December 2014 from four University Hospitals in Italy, where patients with candidemia dying within 30 days from diagnosis were matched to control cases with candidemia who survived in the same period of time...
January 10, 2018: Internal and Emergency Medicine
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