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PubMed Journals Articles About "Impregnated With Silver Nanoparticles AgTive Cannulation Central Venous" RSS

06:40 EDT 26th June 2017 | BioPortfolio

Impregnated With Silver Nanoparticles AgTive Cannulation Central Venous PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Impregnated With Silver Nanoparticles AgTive Cannulation Central Venous articles that have been published worldwide.

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Showing "impregnated with silver nanoparticles AgTive cannulation Central Venous" PubMed Articles 1–25 of 8,700+

Chlorhexidine and silver sulfadiazine coating on central venous catheters is not sufficient for protection against catheter-related infection: Simulation-based laboratory research with clinical validation.

Objective The efficacy of chlorhexidine- and silver sulfadiazine-coated central venous catheters (CSS-CVC) against catheter-related infection remains controversial. We hypothesized that the loss of silver nanoparticles may reduce the antibacterial efficacy of CSS-CVCs and that this loss could be due to the frictional force between the surface of the CVC and the bloodstream. The objective of this study was to investigate whether the antimicrobial effect of CSS-CVCs decreases with increasing exposure time in ...


Cerebral hyperperfusion and other consequences of hemodialysis central vein catheters.

While central venous stenosis is a common consequence of protracted central venous catheter use, intracardiac device transvenous leads, and central venous instrumentation, the majority of patients who develop symptomatic central venous stenosis present with characteristic venous hypertension. However, some patients may develop an abnormal intracranial venous circulation and present with neurologic symptoms. This paper will summarize findings from case reports that describe the neurologic sequelae that can d...

Newly Developed Biocompatible Material: Dispersible Titanium-Doped Hydroxyapatite Nanoparticles Suitable for Antibacterial Coating on Intravascular Catheters.

Thirteen patients with chlorhexidine-silver sulfadiazine-impregnated catheters have experienced serious anaphylactic shock in Japan. These adverse reactions highlight the lack of commercially available catheters impregnated with strong antibacterial chemical agents. A system should be developed that can control both biocompatibility and antibacterial activity.


Phytoremediation of dyes using Lagerstroemia speciosa mediated silver nanoparticles and its biofilm activity against clinical strains Pseudomonas aeruginosa.

The aim of this study was to prepare silver nanoparticles by a green method using the aqueous leaves extract of Lagerstroemia speciosa. The prepared silver nanoparticles were characterized, studied for its photocatalytic and biofilm inhibition studies. The maximum absorbance peak was found at 427nm and thus confirming the formation of silver nanoparticles. The average size of silver nanoparticles synthesized was found to be 12nm using XRD and it was spherical in shape. The nanoparticles synthesized was inve...

Synthesis of silver nanoparticles (Ag NPs) for anticancer activities (MCF 7 breast and A549 lung cell lines) of the crude extract of Syzygium aromaticum.

In the present report, silver nanoparticles were synthesized using Piper nigrum extract for in vitro cytotoxicity efficacy against MCF-7 and HEP-2 cells. The silver nanoparticles (AgNPs) were formed within 20min and after preliminarily confirmation by UV-Visible spectroscopy (strong peak observed at ~441nm), they were characterized by using FT-IR and HR-TEM. The TEM images show spherical shape of biosynthesized AgNPs with particle size in the range 5-40nm while as compositional analysis were observed by EDA...

Biosynthesis and Characterization of Silver Nanoparticles by Aspergillus Species.

Currently, researchers turn to natural processes such as using biological microorganisms in order to develop reliable and ecofriendly methods for the synthesis of metallic nanoparticles. In this study, we have investigated extracellular biosynthesis of silver nanoparticles using four Aspergillus species including A. fumigatus, A. clavatus, A. niger, and A. flavus. We have also analyzed nitrate reductase activity in the studied species in order to determine the probable role of this enzyme in the biosynthesi...

UV-Curable Aliphatic Silicone Acrylate Organic-Inorganic Hybrid Coatings with Antibacterial Activity.

The most effective means to protect against bacterial invasion and to reduce the risk of healthcare-associated infections are antibacterial components synthesis. In this study, a novel process for the synthesis of organic-inorganic hybrid coatings containing silver nanoparticles is presented. Silver nanoparticles and polymer formation proceeds simultaneously through the in situ photoreduction of silver salt to silver nanoparticles and UV-crosslinking of bifunctional aliphatic silicone acrylate. The nanocomp...

Impact electrochemistry on screen-printed electrodes for the detection of monodispersed silver nanoparticles of sizes 10-107 nm.

Impact electrochemistry provides a useful alternative technique for the detection of silver nanoparticles in solutions. The combined use of impact electrochemistry on screen-printed electrodes (SPEs) for the successful detection of silver nanoparticles provides an avenue for future on-site, point-of-care detection devices to be made for environmental, medicinal and biological uses. Here we discuss the use of screen-printed electrodes for the detection of well-defined monodispersed silver nanoparticles of si...

Stent grafts for treatment of cannulation zone stenosis and arteriovenous graft venous anastomosis.

Stent grafts (SGs) are widely used for treatment of failing vascular accesses, fistulas and grafts. The mechanical barrier of the covered stent prevents in-stent stenosis and can be used to effectively correct ruptured vein and aneurysms. Treatment of cannulation zone stenosis with SG can be justified when its use is obligatory, in order to prevent total access loss. Although there are worrying complications attendant on SG insertion and cannulation, including jeopardizing future access creation, most studi...

Removal of bromide from surface waters using silver impregnated activated carbon.

The main objectives of this study were to develop an understanding of silver impregnated activated carbon (SIAC) preparation for enhanced bromide (Br(-)) removal from water, and to investigate the impact of aqueous background composition on the Br(-) removal. Several SIACs were produced using various combinations of oxidation and silver impregnation procedures and powdered activated carbons (ACs). Regardless of the preparation procedure, SIACs showed significantly Br(-) uptakes than the virgin ACs. The Br(-...

Advances in Silver Nanotechnology: An Update on Biomedical Applications and Future Perspectives.

Nanotechnology is one of the most promising fields for producing new applications in nanotechnology, biotechnology, and medicine. However, only a few products have been used for nanotechnology, biotechnology, and medical purposes. Nanoparticles have been among the most usually applied nanomaterial in our health care system for hundreds of years. The most prominent nano product is nano silver which generally present at 1-100 nm in size in at least one dimension. Silver nanoparticles reveal remarkably unusu...

Surgical reconstruction of central venous obstruction in salvaging upper extremity dialysis accesses.

Central vein thrombosis or obstruction is a common complication associated with central venous catheters placed for intermittent hemodialysis. The reported outcomes of percutaneous catheter-based interventions reveal high rates of lesion recurrence with varying and frequently limited patency intervals. We present the case of open venous bypass in the treatment of catheter-associated chronic central vein occlusion.

Phototherapeutic spectrum expansion through synergistic effect of mesoporous silica trio-nanohybrids against antibiotic-resistant gram-negative bacterium.

The extensive impact of antibiotic resistance has led to the exploration of new anti-bacterial modalities. We designed copper impregnated mesoporous silica nanoparticles (Cu-MSN) with immobilizing silver nanoparticles (SNPs) to apply photodynamic inactivation (PDI) of antibiotic-resistant E. coli. SNPs were decorated over the Cu-MSN surfaces by coordination of silver ions on diamine-functionalized Cu-MSN and further reduced to silver nanoparticles with formalin. We demonstrate that silver is capable of sens...

Dynamic Ultrasound-Guided Short-Axis Needle Tip Navigation Technique for Facilitating Cannulation of Peripheral Veins in Obese Patients.

This preliminary observational study evaluated a specific ultrasound technique for venous access. Ultrasound was utilized for navigating a needle and catheter within the vessel lumen after venopuncture. One hundred adult obese surgical patients without visible vessels on their upper extremities were enrolled. Forty-five different operators ranging from medical students to attending anesthesia faculty performed venous cannulation with the specific ultrasound technique. Veins in 95 patients were cannulated su...

Ultrasound as a Screening Tool for Central Venous Catheter Positioning and Exclusion of Pneumothorax.

Although real-time ultrasound guidance during central venous catheter insertion has become a standard of care, postinsertion chest radiograph remains the gold standard to confirm central venous catheter tip position and rule out associated lung complications like pneumothorax. We hypothesize that a combination of transthoracic echocardiography and lung ultrasound is noninferior to chest radiograph when used to accurately assess central venous catheter positioning and screen for pneumothorax.

Predicting Central Venous Pressure by Measuring Femoral Venous Diameter Using Ultrasonography.

The objective of this exploratory study was to find out the correlation of femoral vein diameter (FVD) to central venous pressure (CVP) measurements and to derive a prediction equation to help ascertain the fluid volume status in a critical patient.

The supraclavicular approach to the subclavian vein as an alternative venous access site for ECMO cannulae? A retrospective comparison.

Venous reperfusion as well as double-lumen cannulae for extracorporeal gas exchange (ECMO) are usually inserted via the right internal jugular vein. The supraclavicular approach to the right or left subclavian vein could serve as a possible alternative. The aim of this analysis was to compare feasibility, complications, and performance of supraclavicular and jugular cannulation, respectively.We retrospectively analysed charts and registry data of patients undergoing veno-venous ECMO. Twenty-four patients un...

Environment friendly approach for size controllable synthesis of biocompatible Silver nanoparticles using diastase.

A green, facile method for the size selective synthesis of silver nanoparticles (AgNPs) using diastase as green reducing and stabilizing agent is reported. The thiol groups present in the diastase are mainly responsible for the rapid reaction rate of silver nanoparticles synthesis. The variation in the size and morphology of AgNPs were studied by changing the pH of diastase. The prepared silver nanoparticles were characterized by using UV-vis, XRD, FTIR, TEM and SAED. The FTIR analysis revealed the stabiliz...

Effect of protein corona on silver nanoparticle stabilization and ion release kinetics in artificial seawater.

In parallel with the growing use of nanoparticle-containing products, their release into the environment over the coming years is expected to increase significantly. With many large population centers located in near-coastal areas, and increasing evidence that various nanoparticles may be toxic to a range of organisms, biota in estuarine and coastal waters may be particularly vulnerable. While size effects may be important in cases, silver nanoparticles have been found to be toxic in large part due to their...

Antioxidant and Antibacterial Potential of Silver Nanoparticles: Biogenic Synthesis Utilizing Apple Extract.

The advancement of the biological production of nanoparticles using herbal extracts performs a significant role in nanotechnology discipline as it is green and does not engage harsh chemicals. The objective of the present investigation was to extract flavonoids in the mode of apple extract and synthesize its silver nanoparticles and ultimately nanoparticles loading into hydrogels. The presence of flavonoids in apple extract was characterized by preliminary testing like dil. ammonia test and confirmatory tes...

Enhanced Antimicrobial and Anticancer Activity of Silver and Gold Nanoparticles Synthesised Using Sargassum incisifolium Aqueous Extracts.

A detailed, methodical approach was used to synthesise silver and gold nanoparticles using two differently prepared aqueous extracts of the brown algae Sargassum incisifolium. The efficiency of the extracts in producing nanoparticles were compared to commercially available brown algal fucoidans, a major constituent of brown algal aqueous extracts. The nanoparticles were characterised using TEM, XRD and UV/Vis spectroscopy and zeta potential measurements. The rate of nanoparticle formation was assessed using...

Role of phyto-stabilised silver nanoparticles in suppressing adjuvant induced arthritis in rats.

The present study was aimed to evaluate the anti-arthritic effects of silver nanoparticles synthesised using Piper nigrum extract and to further establish its mechanism of action in a rat model of adjuvant induced arthritis (AA).

Effect of silver nanoparticles on anaerobic bacteria.

The aim was to evaluate the antibacterial effect of silver nanoparticles on anaerobic bacteria.

Measurement of the Density of Engineered Silver Nanoparticles using Centrifugal FFF-TEM and Single Particle ICP-MS.

A methodology has been developed to measure nanoparticle mass and density, by combining centrifugal field-flow fractionation (CeFFF) (more commonly called sedimentation FFF or SdFFF) and transmission electron microscopy (TEM). Particle effective mass obtained from CeFFF retention data, and particle size obtained from the TEM images were used to calculate the nanoparticle density. The method was initially applied to measure the density of monodispersed polystyrene latex nanoparticles. Measured densities for ...

Clusterin in the protein corona plays a key role in the stealth effect of nanoparticles against phagocytes.

In biological fluids, nanoparticles interact with biological components such as proteins, and a layer called the "protein corona" forms around the nanoparticles. It is believed that the composition of the protein corona affects the cellular uptake and in vivo biodistribution of nanoparticles; however, the key proteins of the protein corona that control the biological fate of nanoparticles remain unclear. Recently, it was reported that clusterin binding to pegylated nanoparticles is important for the stealth...


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