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https://www.readbyqxmd.com/read/28803189/efficacy-of-radiant-catalytic-ionization-to-reduce-bacterial-populations-in-air-and-on-different-surfaces
#1
Krzysztof Skowron, Katarzyna Grudlewska, Joanna Kwiecińska-Piróg, Grzegorz Gryń, Mścisław Śrutek, Eugenia Gospodarek-Komkowska
Air contamination by biological agents is often observed in medical or veterinary facilities and industrial plants. Bioaerosols may sediment and pose the surface contamination. Microorganisms present on them may become a source of infections among humans and food contamination. This study determined the use of oxidative gases, including ozone and peroxide, generated by the Radiant Catalytic Ionization (RCI) cell for the inactivation of Acinetobacter baumannii, Escherichia coli, Enterococcus faecalis, Pseudomonas aeruginosa, Salmonella Enteritidis, Listeria monocytogenes, Staphylococcus aureus, Streptococcus epidermidis, Bacillus subtilis, Clostridium sporogenes, Candida albicans, Aspergillus niger and Penicillium chrysogenumon in air and on different surfaces...
August 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28802173/fungicidal-activity-of-copper-sputtered-flexible-surfaces-under-dark-and-actinic-light-against-azole-resistant-candida-albicans-and-candida-glabrata
#2
Myriam K S Ballo, Sami Rtimi, John Kiwi, César Pulgarin, José M Entenza, Alain Bizzini
Candida spp. are able to survive on hospital surfaces and causes healthcare-associated infections (HCAIs). Since surface cleaning and disinfecting interventions are not totally effective to eliminate Candida spp., new approaches should be devised. Copper (Cu) has widely recognized antifungal activity and the use of Cu-sputtered surfaces has recently been proposed to curb the spread of HCAIs. Moreover, the activity of Cu under the action of actinic light remains underexplored. We investigated the antifungal activity of Cu-sputtered polyester surfaces (Cu-PES) against azole-resistant Candida albicans and Candida glabrata under dark and low intensity visible light irradiation (4...
July 29, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28800779/proinflammatory-mg-63-cells-response-infection-with-enterococcus-faecalis-cps2-evaluated-by-the-expression-of-tlr-2-il-1%C3%AE-and-inos-mrna
#3
Boy M Bachtiar, Endang W Bachtiar
OBJECTIVE: We have previously demonstrated that unencapsulated Enterococcus faecalis cps2 inhibits biofilm formation of Candida albicans, a fungus commonly found with E. faecalis in periapical lesion. In this study, we compared encapsulated and unencapsulated E. faecalis cps2 strains relationship with osteoblastic (MG-63) cells, whereas E. faecalis ATCC 29212 were used as a reference strain. RESULTS: The binding capacity of E. faecalis to MG-63 cells as shown by each tested strain was comparable, but the unencapsulated strain was less invasive compared to the encapsulated and the reference strains...
August 11, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28799299/a-comparative-study-of-csf-viral-rna-loads-between-hiv-positive-patients-with-neurological-manifestations-and-neurologically-asymptomatic-hiv-patients
#4
A D Mathur, S Devesh
INTRODUCTION: There are conflicting reports in literature about correlation of CSF viral RNA levels with neurological manifestations in HIV positive patients. Many studies in animals and human subjects have shown that CSF HIV-1 RNA can be useful as a specific marker of HIV induced neuropathology. To the contrary there are studies which show that neurological disease states can occur in absence of significant increase of CSF HIV RNA. MATERIALS AND METHODS: This was a prospective study conducted at Base hospital Delhi Cantt, New Delhi, a tertiary care hospitals for HIV patients...
August 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28797969/bioactive-mesoporous-silica-nanostructures-with-anti-microbial-and-anti-biofilm-properties
#5
Paul Cătălin Balaure, Bianca Boarca, Roxana Cristina Popescu, Diana Savu, Roxana Trusca, Bogdan Ștefan Vasile, Alexandru Mihai Grumezescu, Alina Maria Holban, Alexandra Bolocan, Ecaterina Andronescu
The increasing rate of antibiotic resistant bacteria associated with nosocomial infections in severely ill patients has urged the need for new antibacterial therapies. Nanostructured materials represent emerging innovative approaches to controlled delivery of different antimicrobial drugs. Delivery systems encapsulating natural compounds with antibacterial effects, such as essential oils have shown a great potential. Herein we report the development of SiO2 mesoporous nanosystems loaded with eucalyptus (EUC), orange (ORA), and cinnamon (CIN) essential oils...
August 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28797532/assessment-of-in-vitro-antifungal-efficacy-and-in-vivo-toxicity-of-amphotericin-b-loaded-plga-and-plga-peg-blend-nanoparticles
#6
T C Moraes Moreira Carraro, C Altmeyer, N Maissar Khalil, R Mara Mainardes
Amphotericin B (AmB) is widely applied in treatment of systemic fungal infections. However, the emergence of severe adverse effects, such as nephrotoxicity, hepatotoxicity and hemolytic anemia, can limit its clinical use. Poly(lactide-co-glycolide) (PLGA) or poly(lactide-co-glycolide)-poly(ethylene glycol) (PLGA-PEG) blend nanoparticles containing AmB were developed with the aim to decrease AmB toxicity and propose the oral route for AmB delivery. Nanoparticles were characterized by particle size, polydispersity index, Fourier transform infrared spectroscopy, differential scanning calorimetry and X-ray diffraction analyses...
August 7, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28797491/candidemia-in-the-intensive-care-unit
#7
REVIEW
Oleg Epelbaum, Rachel Chasan
Candidemia presents several challenges to the intensive care unit (ICU) community. Recognition and treatment of this infection is frequently delayed, with dramatic clinical deterioration and death often preceding the detection of Candida in blood cultures. Identification of individual patients at the highest risk for developing candidemia remains an imperfect science; the role of antifungal therapy before culture diagnosis is yet to be fully defined in the ICU. The absence of well-established molecular techniques for early detection of candidemia hinders efforts to reduce the heavy clinical and economic impact of this infection...
September 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28796840/yes-research-matters
#8
Mari L Shinohara
My father was diagnosed with stomach cancer recently. Luckily, it was still at an early stage, and endoscopic surgery successfully took care of it. My father was fortunate; since people with stomach cancer do not show clear symptoms in the early stages, the disease is often not diagnosed until it becomes advanced. In his case, the diagnosis started from a suggestion by his doctor to check whether he had a gastric infection with Helicobacter pylori, a bacterial species found in the digestive tract. In Japan, where he lives, a majority of gastric cancer patients (more than 99%) have been infected with H...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28795887/cold-atmospheric-pressure-plasmas-exhibit-antimicrobial-properties-against-critical-bacteria-and-yeast-species
#9
C Wiegand, S Fink, U-C Hipler, O Beier, K Horn, A Pfuch, A Schimanski, B Grünler
OBJECTIVE: Cold atmospheric pressure plasmas (CAPPs) have been used to sterilise implant materials and other thermally unstable medical products and to modify chemical surfaces. This study investigates the antimicrobial effect of the gas and input power used to generate CAPPs on microorganisms causing skin infections, such as Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Malassezia pachydermatis. METHOD: Microorganisms were cultivated on Mueller Hinton 2 (MH2) agar plates...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28793937/effectiveness-of-disinfectants-against-candida-auris-and-other-candida-species
#10
Jennifer L Cadnum, Aaron A Shaikh, Christina T Piedrahita, Thriveen Sankar, Annette L Jencson, Emily L Larkin, Mahmoud A Ghannoum, Curtis J Donskey
Contaminated surfaces are a suspected source for dissemination of the globally emerging pathogen Candida auris. In laboratory testing, sporicidal and improved hydrogen peroxide disinfectants were highly effective against C. auris, C. glabrata, and C. albicans. The widely used quaternary ammonium disinfectants exhibited relatively poor activity against all of the Candida species. Infect Control Hosp Epidemiol 2017;1-4.
August 10, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28793176/neutralization-of-pathogenic-fungi-with-small-molecule-immunotherapeutics
#11
Egor Chirkin, Viswanathan Muthusamy, Paul Mann, Terry Roemer, Philippe G Nantermet, David Spiegel
Systemic fungal infections represent an important public health concern, and new antifungal agents are highly desirable. Herein, we describe the design, synthesis and biological evaluation of a novel class of antifungal compounds called Antibody-Recruiting Molecules targeting Fungi (ARM-Fs). Our approach relies on the use of non-peptidic small molecules, which selectively bind fungal cells and recruit endogenous antibodies to their surfaces, resulting in immune-mediated clearance. Using the opportunistic fungal pathogen Candida albicans as a model, we identified a highly specific bifunctional molecule able to mediate the engulfment and phagocytosis of C...
August 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28793015/virulence-factors-and-genetic-variability-of-vaginal-candida-albicans-isolates-from-hiv-infected-women-in-the-post-highly-active-antiretroviral-era
#12
Pâmela Cristina Mastellaro Delvas Zanni, Patrícia de Souza Bonfim-Mendonça, Melyssa Negri, Sandra Sayuri Nakamura, Lucélia Donatti, Terezinha Inez Estivalet Svidzinski, Márcia Edilaine Lopes Consolaro
Vulvovaginal candidiasis (VVC) in HIV-infected (HIV+) women is a serious public health problem. However, little is known about the virulence mechanisms of vaginal Candida albicans from HIV+ women in the post-highly active antiretroviral therapy (HAART) era. Here, we report a comparative analysis of the expression of key virulence factors and genetic variability of 26 vaginal C. albicans strains isolated from HIV+ women undergoing HAART and 18 from HIV-uninfected (HIV-) women. In general, we observed that C...
2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28792540/antibiotics-resistance-in-el-tor-vibrio-cholerae-01-isolated-during-cholera-outbreaks-in-mozambique-from-2012-to-2015
#13
Liliana Candida Dengo-Baloi, Cynthia Amino Semá-Baltazar, Lena Vania Manhique, Jucunu Elias Chitio, Dorteia Luísa Inguane, José Paulo Langa
RATIONALE: Mozambique has recorded cyclically epidemic outbreaks of cholera. Antibiotic therapy is recommended in specific situations for management and control of cholera outbreaks. However, an increase in resistance rates to antibiotics by Vibrio cholerae has been reported in several epidemic outbreaks worldwide. On the other hand, there are few recent records of continuous surveillance of antibiotics susceptibility pattern of V. cholerae in Mozambique. GOALS: The purpose of this study was to evaluate antibiotics resistance pattern of Vibrio cholerae O1 Ogawa isolated during Cholera outbreaks in Mozambique to commonly used antibiotics...
2017: PloS One
https://www.readbyqxmd.com/read/28791666/clinical-pharmacokinetics-and-pharmacodynamics-of-micafungin
#14
REVIEW
Roeland E Wasmann, Eline W Muilwijk, David M Burger, Paul E Verweij, Catherijne A Knibbe, Roger J Brüggemann
Micafungin is a selective inhibitor of the synthesis of fungal 1,3-β-D-glucan, an essential component of the fungal cell wall. It is available as a powder for infusion only and is registered for the treatment of invasive and esophageal candidiasis in addition to prophylaxis of Candida infections in both adults and children. Average exposure after a single intravenous 100 mg dose in healthy adults is 133 mg h/L. Both exposure and maximum plasma concentration show linear dose proportional pharmacokinetics (PK) over a 0...
August 8, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28783748/heat-shock-protein-90-localizes-to-the-surface-and-augments-virulence-factors-of-cryptococcus-neoformans
#15
Sharanya Chatterjee, Utpal Tatu
BACKGROUND: Thermotolerance is an essential attribute for pathogenesis of Cryptococcus as exemplified by the fact that only two species in the genus, which can grow at 37°C, are human pathogens. Species which have other virulence factors including capsule formation and melanisation, but lack the ability to propagate at 37°C are not pathogenic. In another related fungal pathogen, Candida albicans, heat shock protein 90 has been implicated to be a central player in commanding pathogenicity by governing yeast to hyphal transition and drug resistance...
August 4, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28783552/a-meta-analysis-of-randomized-trials-assessing-the-effects-of-probiotic-preparations-on-oral-candidiasis-in-the-elderly
#16
REVIEW
Ruixue Ai, Jiao Wei, Danhua Ma, Lu Jiang, Hongxia Dan, Yu Zhou, Ning Ji, Xin Zeng, Qianming Chen
OBJECTIVE: Oral candidiasis is the most common fungal infection and can be attributed in part to dysbiosis, an imbalance in the resident oral microflora. Therefore, probiotics, which counter pathogenic microorganisms through competitive, antagonistic, and immunological effects, have been used by some clinicians. To date, the effect of probiotics in preventing oral candidiasis in the elderly is controversial. A systematic review that summarizes and critically appraises the available clinical trials is therefore necessary...
April 30, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28783506/nanoscale-silver-depositions-inhibit-microbial-colonization-and-improve-biocompatibility-of-titanium-abutments
#17
Supriya Kheur, Nimisha Singh, Dhananjay Bodas, Jean-Yves Rauch, Shantanu Jambhekar, Mohit Kheur, Jyutika Rajwade
Although titanium dental implants are biocompatible, exhibit excellent corrosion resistance and high mechanical resistance, the material fails in providing resistance to infection because it exhibits poor antimicrobial activity. To address these issues, we deposited silver onto titanium abutments (Grade 5 titanium discs) using direct current (DC) sputtering and assessed the antimicrobial activity and biocompatibility of the modified implant material. Atomic absorption spectrometry and X-ray photoelectron spectroscopy were employed to investigate the concentration and elemental composition of the deposited silver...
July 29, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28783385/candida-auris-a-worrisome-globally-emerging-pathogen
#18
Bhagyashri D Navalkele, Sanjay Revankar, Pranatharthi Chandrasekar
Candida auris is a recently discovered, rapidly emerging fungal pathogen. Infections due to C. auris are hospital-acquired, multidrug resistant and associated with high mortality. Areas covered: This review highlights epidemiology, pathogenesis, microbiological characteristics, clinical presentation, diagnostic challenges and treatment options of C. auris infections. Infection prevention measures to prevent spread of C. auris and special measures during an outbreak situation have also been reviewed. Expert commentary: Rapid emergence of hospital onset C...
August 7, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28782479/candida-infections-and-human-defensins
#19
Vania Polesello, Ludovica Segat, Sergio Crovella, Luisa Zupin
Candida species infections are an important worldwide health issue since they do not only affect immunocompromised patients but also healthy individuals. Indeed Candida spp. are present as commensal flora in the host human body but they can switch into a pathological form inducing cellular damage and disease. Among Candida strains, C. albicans is the most prevalent in both mucosal and systemic infections. The host developed different mechanisms of protection against Candida infections; specifically the immune system and the innate immune response are the first line of defence...
August 7, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28781150/2016-guidelines-for-the-use-of-antifungal-agents-in-patients-with-invasive-fungal-diseases-in-taiwan
#20
REVIEW
Hsiang-Chi Kung, Po-Yen Huang, Wei-Ting Chen, Bor-Sheng Ko, Yee-Chun Chen, Shan-Chwen Chang, Yin-Ching Chuang
The Infectious Diseases Society of Taiwan, Medical Foundation in Memory of Dr. Deh-Lin Cheng, Foundation of Professor Wei-Chuan Hsieh for Infectious Diseases Research and Education, and CY Lee's Research Foundation for Pediatric Infectious Diseases and Vaccines have updated the guidelines for the use of antifungal agents in adult patients with invasive fungal diseases in Taiwan. This guideline replaces the 2009 version. Recommendations are provided for Candida, Cryptococcus, Aspergillus and Mucormycetes. The focus is based on up-to-date evidence on indications for treatment or prophylaxis of the most common clinical problems...
July 25, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
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