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https://www.readbyqxmd.com/read/29452243/evaluation-of-ozonated-water-on-the-basis-of-astm-e1174-for-standardized-testing-of-hand-wash-formulations-for-healthcare-personnel
#1
K Nakamura, K Saito, J Kashiwazaki, T Aoyagi, K Arai, Y Hara, S Kobari, H Mori, K Ohashi, Y Takano, M Kaku, K Kanemitsu
We evaluated the bacterial removal effects of hand washing with ozonated water using the ASTM E1174 standard test method. Thirty healthy volunteers were assigned randomly to three groups: ozonated water, antimicrobial soap and water, and non-antimicrobial soap and water. A 3 log 10 CFU reduction was achieved by washing hands with ozonated water or antimicrobial soap and water. However, ozonated water was not significantly superior to non-antimicrobial soap and water. Ozonated water may remove bacteria from the hands to at least a similar extent as that by non-antimicrobial soap and water in the absence of visible dirt or body fluid contamination...
February 13, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29451858/cerebrospinal-fluid-micrornas-as-diagnostic-biomarkers-in-brain-tumors
#2
REVIEW
Alena Kopkova, Jiri Sana, Pavel Fadrus, Ondrej Slaby
Cerebrospinal fluid (CSF) is a body fluid that has many important functions and is in direct contact with the extracellular environment of the central nervous system (CNS). CSF serves as both the communication channel allowing the distribution of various substances among the CNS cells and the storage facility for the waste products these cells release. For these reasons, CSF is a potential source of diagnostic biomarkers of many CNS diseases, including brain tumors. Recent studies have revealed that CSF also contains circulating microRNAs (miRNAs), short non-coding RNAs that have been described as biomarkers in many cancers...
February 16, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29451421/bionanocomposite-scaffolds-based-on-chitosan-gelatin-and-nanodimensional-bioactive-glass-particles-in-vitro-properties-and-in-vivo-bone-regeneration
#3
Cristian Covarrubias, Monserrat Cádiz, Miguel Maureira, Isabel Celhay, Felipe Cuadra, Alfredo von Marttens
Bone repair bionanocomposite scaffolds were produced by incorporating dense bioactive glass nanoparticles or mesoporous bioactive glass nanospheres into a chitosan-gelatin polymer blend. The in vitro bioactivity of the scaffolds was assessed in simulated body fluid, and cell viability and osteogenic differentiation assays were performed with dental pulp stem cells. Bone regeneration properties of the scaffold materials were in vivo assessed by using a critical-sized femoral defect model in rat. The scaffold nanocomposites showed excellent cytocompatibility and ability to accelerate the crystallization of bone-like apatite in vitro...
January 1, 2018: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29449964/consequences-of-inadvertent-intravitreal-mitomycin-c-injection
#4
Ahmad Mirshahi, Alireza Lashay, Mohammad Reza Mehrabi Bahar, Mojtaba Abrishami
Background: Mitomycin C (MMC) as an alkylating agent is miscellaneous an antineoplastic, antibiotic and ophthalmic agent. Here we aim to report a case of inadvertent intravitreal MMC injection instead of Avastin in case of diabetic macular edema. Case presentation: A 53 years old woman was planned to receive intravitreal Avastin injection, but accidentally, 0.05 ml of MMC 0.2% was injected. Best corrected visual acuity (BCVA) was 20/160 before injection. After 2 days, patient was referred to a tertiary referral eye center...
2018: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/29448712/a-simulated-body-fluid-evaluation-of-tio%C3%A2-barrier-oxide-layer-formed-by-electrochemical-reaction
#5
Jae-Myung Jang, Tae-Eon Park, Seung-Dai Kim, Han-Cheol Choe
The modified surface during implantation is considered to be an effective strategy to improve high adhesion of bone cell and osseointegration activity. In this paper, the TiO2 barrier oxide Layer has been fabricated by using the ion characteristic of an electrolytic solution, the surface characteristics have been investigated by EDS, XPS, and FE-SEM. From the analysis of the chemical states, phosphorus and calcium were observed in the TiO2 barrier layer, which were penetrated from the electrolyte into the oxide layer during deposit process...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448608/bone-like-apatite-formation-on-the-plasma-electrolytic-oxidation-treated-ti-6al-4v-alloy-in-solution-containing-si-and-mg-ions
#6
Seon-Yeong Park, D Han-Cheol Choe
The bon-like apatite formation on the plasma electrolytic oxidation (PEO)-treated Ti-6Al-4V alloy in solution containing Si and Mg ions was studied using various experimental techniques. A Ti-6Al-4V ELI disk and implant was used as a substrate for PEO. A pulsed DC power supply was used to apply a potential of 280 V in the electrolyte for 3 min. To examine the bioactivity, the PEO films formed implant specimens were immersed in a simulated body fluid (SBF) for 12 h. PEO-treated surface has large micro-pores and small micro-pores, and 5 Mg/Si and 20 Mg/Si coated surfaces showed the more small micro-pores than that of CaP coated surface...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448502/-in-vitro-mechanical-performance-study-of-biodegradable-polylactic-acid-hydroxyapatite-nanocomposites-for-fixation-medical-devices
#7
Jinsu Park, Bae-Jung Kim, Ji-Yeong Hwang, Yo-Woong Yoon, Hoon-Sang Cho, Dong-Hyun Kim, Jong Kook Lee, Seog-Young Yoon
Osteoconductive, biocompatible, and resorbable organic/inorganic composites are most commonly used in fixation medical devices, such as suture anchors and interference screws, because of their unique physical and chemical properties. Generally, studies on biodegradable composites have focused on their mechanical properties based on the composition and the individual roles of organic and inorganic biomaterials. In this study, we prepared biodegradable organic/inorganic nanocomposite materials using the solvent mixing process and conventional molding...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448499/sol-gel-derived-antibacterial-ag-containing-zno-films-on-biomedical-titanium
#8
T Fu, F Zhang, Z Alajmi, S Y Yang, F Wu, S L Han
ZnO and Ag-containing ZnO (ZnO/Ag) films with the Ag/Zn molar ratio of 3.3 and 9.1%, respectively were sol-gel coated on biomedical titanium for antibacterial and bioactive surface modification. X-ray diffraction analysis indicates that ZnO peaks increase with the calcination temperature of the samples. Scanning electron microscopy and energy dispersive of X-ray analyses reveal Ag-rich white particles (300~750 nm) on ZnO/Ag samples that were calcined at 400 °C. X-ray photoelectron spectroscopy analysis of ZnO/Ag samples shows that Zn and O exist as ZnO and Ag presents in metallic state...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448413/electrohydrodynamic-instability-of-premixed-flames-under-manipulations-of-dc-electric-fields
#9
Yihua Ren, Wei Cui, Shuiqing Li
We report an electrohydrodynamic instability in a premixed stagnation flame under manipulations of a dc electric field. This instability occurs when the electric field strength is at a certain value below the breakdown threshold, which is 0.75 kV/cm in the experimental setup. Above this value the flame front suddenly transits from a substrate-stabilized near-flat shape to a nozzle-stabilized conical surface, accompanied by a jump in the electric current through the flame field. At the transition moment, the flame spontaneously propagates upstream to the nozzle while the flow velocity at the upstream of the flame front decreases to zero, as revealed by high-speed photographs and PIV measurements...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448199/insights-on-the-criteria-of-selection-of-vegetable-and-mineral-dielectric-fluids-used-in-power-transformers-on-the-basis-of-their-biodegradability-and-toxicity-assessments
#10
Aparecido Nivaldo Módenes, Karina Sanderson, Daniela Estelita Goes Trigueros, Adilson Ricken Schuelter, Fernando Rodolfo Espinoza-Quiñones, Camila Vargas Neves, Luiz Antônio Zanão Junior, Alexander Dimitrov Kroumov
Leakage of transformer dielectric fluids is a concern because it may pose a risk of environmental contamination. In this study, the deleterious effects of vegetable and mineral dielectric fluids in water bodies were investigated using biodegradability and acute toxicity tests with Danio rerio and Artemia salina. Regarding biodegradability, all four tested vegetable oils (soy, canola, sunflower and crambe) were considered as easily biodegradable, presenting degradation rates significantly higher than the Lubrax-type mineral fluid...
February 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29448144/nanocements-produced-from-mesoporous-bioactive-glass-nanoparticles
#11
Min Sil Kang, Na-Hyun Lee, Rajendra K Singh, Nandin Mandakhbayar, Roman A Perez, Jung-Hwan Lee, Hae-Won Kim
Biomedical cements are considered promising injectable materials for bone repair and regeneration. Calcium phosphate composition sized with tens of micrometers is currently one of the major powder forms. Here we report a unique cement form made from mesoporous bioactive glass nanoparticles (BGn). The nanopowder could harden in reaction with aqueous solution at powder-to-liquid ratios as low as 0.4-0.5 (vs. 2.0-3.0 for conventional calcium phosphate cement CPC). The cementation mechanism investigated from TEM, XRD, FT-IR, XPS, and NMR analyses was demonstrated to be the ionic (Si and Ca) dissolution and then reprecipitation to form Si-Ca-(P) based amorphous nano-islands that could network the particles...
February 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29448111/in-silico-screening-of-proteins-targeting-circulating-mirnas-for-improved-diagnosis-of-multiple-myeloma
#12
Shradha Suyal, Manish Pratap Singh, Himanshu Shekhar, Sameer Srivastava
Multiple Myeloma (MM) is a B-cell malignancy, which is characterized by the expansion of clonal plasma cells in the bone marrow, leading to abnormal accumulation of monoclonal antibodies in circulation. Certain circulating miRNAs are deregulated in MM and their differential expression profiles in body fluids can be quantified and used discriminate between the premalignant and malignant stages of MM. Our study identifies protein which would show affinity for a selected panel of circulating miRNAs deregulated in MM...
February 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29447205/aggressive-fluid-accumulation-is-associated-with-acute-kidney-injury-and-mortality-in-a-cohort-of-patients-with-severe-pneumonia-caused-by-influenza-a-h1n1-virus
#13
Gustavo Alejandro Casas-Aparicio, Isabel León-Rodríguez, Rafael de Jesús Hernández-Zenteno, Manuel Castillejos-López, Claudia Alvarado-de la Barrera, Christopher E Ormsby, Gustavo Reyes-Terán
INTRODUCTION: Fluid accumulation is associated with adverse outcomes such as acute kidney injury (AKI) in critically ill patients. This study aimed to describe the factors associated with AKI in individuals with influenza A H1N1 severe pneumonia, and explore the relation of fluid accumulation with AKI and mortality. MATERIAL AND METHODS: We reviewed medical records of individuals with influenza A H1N1 severe pneumonia and no history of chronic kidney disease, attending a national referral center for respiratory diseases between November 2014 and May 2015...
2018: PloS One
https://www.readbyqxmd.com/read/29446655/micrornas-as-molecular-targets-of-quercetin-and-its-derivatives-underlying-their-biological-effects-a-preclinical-strategy
#14
Dan Wang, Dongxiao Sun-Waterhouse, Feng Li, Li Xin, Dapeng Li
Quercetin is a well-known flavonoid naturally occurring in most of the plant foods and is often found in the human diet. It can act as a potent antioxidant and anti-inflammatory agent, and plays significant roles in the prevention of various chronic diseases. Recent findings revealed that quercetin could affect metabolic traits by regulating certain transcription factors or key proteins involved in cellular signal pathways and influencing the expression of functional genes along with related regulatory pathway(s), and that microRNAs (miRNAs) circulate in body fluids and are involved in post-transcriptional gene silencing and regulation of gene expression in various biological processes including development, proliferation, metabolism and inflammation...
February 15, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29446172/measuring-the-prevalence-of-intradialytic-hypotension-in-a-satellite-dialysis-clinic-are-we-too-complacent
#15
Ulrich Steinwandel, Nick Gibson, Mandy Towell, Richard Parsons, James Rippey, Johan Rosman
AIMS AND OBJECTIVES: Measuring the prevalence of symptomatic (S-IDH) and asymptomatic intradialytic hypotension (A-IDH) or post-dialysis overhydration in a satellite haemodialysis clinic in Western Australia. BACKGROUND: Intradialytic hypotension is one of the most common side-effects of haemodialysis caused by ultrafiltration provoking a temporary volume depletion. The prevalence of asymptomatic hypotension during dialysis has been rarely reported, but is considered to have the same negative consequences as symptomatic hypotension on various end organs like the brain and the gastro-intestinal tract...
February 15, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29446127/whole-body-mri-for-metastatic-cancer-detection-using-t-2-weighted-imaging-with-fat-and-fluid-suppression
#16
Xinzeng Wang, Ali Pirasteh, James Brugarolas, Neil M Rofsky, Robert E Lenkinski, Ivan Pedrosa, Ananth J Madhuranthakam
PURPOSE: To develop a whole-body MRI technique at 3T with improved lesion conspicuity for metastatic cancer detection using fast, high-resolution and high SNR T 2 -weighted (T 2 W) imaging with simultaneous fat and fluid suppression. THEORY AND METHODS: The proposed dual-echo T 2 -weighted acquisition for enhanced conspicuity of tumors (DETECT) acquires 4 images, in-phase (IP) and out-of-phase (OP) at a short and a long TE using single-shot turbo spin echo. The IP/OP images at the short and long TEs are reconstructed using the standard Dixon and shared-field-map Dixon reconstruction respectively, for robust fat-water separation...
February 14, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29446123/associations-between-csf-cortisol-and-csf-norepinephrine-in-cognitively-normal-controls-and-patients-with-amnestic-mci-and-ad-dementia
#17
Lucy Y Wang, Murray A Raskind, Charles W Wilkinson, Jane B Shofer, Carl Sikkema, Patricia Szot, Joseph F Quinn, Douglas R Galasko, Elaine R Peskind
OBJECTIVE: This study evaluated the effects of Alzheimer disease (AD) on the relationship between the brain noradrenergic system and hypothalamic pituitary adrenocortical axis (HPA). Specifically, relationships between cerebrospinal fluid (CSF) norepinephrine (NE) and CSF cortisol were examined in cognitively normal participants and participants with AD dementia and amnestic mild cognitive impairment (aMCI). We hypothesized that there would a positive association between these 2 measures in cognitively normal controls and that this association would be altered in AD...
February 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29445057/utility-of-fluid-assessment-based-on-the-intrathoracic-impedance-monitoring-in-a-peripartum-woman-with-heart-disease
#18
Atsushi Daimon, Chizuko A Kamiya, Masami Sawada, Yusuke Ueda, Chinami Horiuchi, Takekazu Miyoshi, Mitsuhiro Tsuritani, Naoko Iwanaga, Reiko Neki, Hideo Okamura, Shingo Kusano, Jun Yoshimatsu
Recently, implantable cardioverter-defibrillators (ICD) have become capable of monitoring intrathoracic impedance to detect an increased fluid volume and heart failure. Pregnancy is a well-known cause of an increased body fluid volume; however, it is not clear whether the measurement of intrathoracic impedance by ICD is clinically useful for precisely detecting heart failure in pregnant women. We herein report the case of a 39-year-old woman with an ICD that had been implanted after an event of ventricular fibrillation due to severe aortic regurgitation with a bicuspid aortic valve...
February 14, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29445037/on-the-diverse-roles-of-fluid-dynamic-drag-in-animal-swimming-and-flying
#19
REVIEW
R Godoy-Diana, B Thiria
Questions of energy dissipation or friction appear immediately when addressing the problem of a body moving in a fluid. For the most simple problems, involving a constant steady propulsive force on the body, a straightforward relation can be established balancing this driving force with a skin friction or form drag, depending on the Reynolds number and body geometry. This elementary relation closes the full dynamical problem and sets, for instance, average cruising velocity or energy cost. In the case of finite-sized and time-deformable bodies though, such as flapping flyers or undulatory swimmers, the comprehension of driving/dissipation interactions is not straightforward...
February 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29442799/biomimetic-nanohydroxyapatite-synthesized-with-without-tris-buffered-simulated-body-fluid-a-comparative-analysis
#20
Deepti Rana, Xiumei Wang, Thomas J Webster, Murugan Ramalingam
Nano hydroxyapatite (nHAp) mimics the inorganic phase of hard tissue such as bone and teeth and, thus, has a wide range of clinical applications. The present study reports on the biomimetic synthesis of nHAp with and without Tris-buffered simulated body fluid (SBF) and investigated the role of buffering conditions on nHAp formation. The hypothesis of this study was that the nucleation and growth rate of nHAp may depend on buffering conditions during the precipitation process. The results of this study suggest that both of the above methods effectively synthesized carbonated "bone-like" nHAp...
June 1, 2018: Journal of Nanoscience and Nanotechnology
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