keyword
MENU ▼
Read by QxMD icon Read
search

Tem platelets

keyword
https://www.readbyqxmd.com/read/28887963/facile-one-pot-green-synthesis-antibacterial-antifungal-antioxidant-and-antiplatelet-activities-of-lignin-capped-silver-nanoparticles-a-promising-therapeutic-agent
#1
M B Marulasiddeshwara, S S Dakshayani, M N Sharath Kumar, R Chethana, P Raghavendra Kumar, S Devaraja
The current work portrays the green synthesis of Lignin Capped Silver Nanoparticles (LCSN) and their antibacterial, antifungal, antioxidant and antiplatelet potential. The LCSN was synthesized in water using a carbohydrate based polymer 'lignin' as the reducing and capping agents. The peak at 406nm (λmax) in the UV-Vis., spectrum and EDX analysis confirmed 1.68% (w/w) of silver was found to be loaded on lignin. The characteristic sharp peaks appeared in the PXRD spectrum showed fcc crystalline structure LCSN...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28833171/facile-synthesis-of-bioi-nanoparticles-at-room-temperature-and-evaluation-of-their-photoactivity-under-sunlight-irradiation
#2
Vahid Mahmoodi, Ali Ahmadpour, Tahereh Rohani Bastami, Mohammad Taghi Hamed Mousavian
In this paper, highly photoactive BiOI nanoparticles (NPs) under sunlight irradiation were synthesized by a facile precipitation method using polyvinylpyrrolidone (PVP) at room temperature. The as-prepared catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transition electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR) and UV-vis diffusive reflectance spectra (UV-vis DRS). The results of XRD showed that PVP did not have any significant effect on tetragonal crystalline structure of BiOI...
August 21, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28800610/anticoagulant-action-of-low-physiologic-and-high-albumin-levels-in-whole-blood
#3
Margret Paar, Christine Rossmann, Christoph Nusshold, Thomas Wagner, Axel Schlagenhauf, Bettina Leschnik, Karl Oettl, Martin Koestenberger, Gerhard Cvirn, Seth Hallström
Albumin is the most abundant plasma protein. Critical illness is often associated with altered, predominately decreased, serum albumin levels. This hypoalbuminaemia is usually corrected by administration of exogenous albumin. This study aimed to track the concentration-dependent influence of albumin on blood coagulation in vitro. Whole blood (WB) samples from 25 volunteers were prepared to contain low (19.3 ± 7.7 g/L), physiological (45.2 ± 7.8 g/L), and high (67.5 ± 18.1 g/L) levels of albumin. Haemostatic profiling was performed using a platelet function analyzer (PFA) 200, impedance aggregometry, a Cone and Platelet analyzer (CPA), calibrated automated thrombogram, and thrombelastometry (TEM)...
2017: PloS One
https://www.readbyqxmd.com/read/28780336/facile-one-pot-synthesis-of-cerium-oxide-sulfur-doped-graphitic-carbon-nitride-g-c3n4-as-efficient-nanophotocatalysts-under-visible-light-irradiation
#4
Milad Jourshabani, Zahra Shariatinia, Alireza Badiei
Porous CeO2/sulfur-doped g-C3N4 (CeO2/CNS) composites were synthesized by one-pot thermal condensation of thiourea and cerium nitrate as starting materials. The obtained CeO2(x)/CNS composites (x=8.4, 9.5 and 10.4wt%) with different CeO2 contents were characterized by the XRD, FT-IR, XPS, TEM, BET, DRS and PL analyses. The TEM images displayed a nonporous and platelet-like morphology for pure CNS but a nanoporous structure with numerous uniform pore sizes of ∼40nm for the CeO2(9.5)/CNS composite. The XRD phase structures and TEM morphologies confirmed that structural evolution trend and stacking degree of CNS were disrupted in precense of the CeO2 nanoparticles...
July 29, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28752997/synthesis-and-characterization-of-ultrathin-silver-sulfide-nanoplatelets
#5
Lenore Kubie, Laurie A King, Meghan E Kern, Joseph R Murphy, Subash Kattel, Qian Yang, Joshua T Stecher, William D Rice, Bruce A Parkinson
We report the synthesis of ultrathin silver sulfide (Ag2S) nanoplatelets (NPLs) synthesized via a one-pot method in ethylene glycol with 3-mercaptopropionic acid serving as both the sulfur precursor and the platelet ligand. The colloidally synthesized nanoplatelets are exceptionally thin, with a thickness of only 3.5 ± 0.2 Å and a 1S exciton Bohr diameter to confinement ratio of ∼12.6. The NPL growth is shown to be quantized by layer thickness using absorption and photoluminescence (PL) spectroscopy. Transmission electron microscopy, atomic force microscopy, and X-ray diffraction analyses of the NPLs show that they correspond to the (202) plane of the β-Ag2S structure...
August 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28702959/treatment-of-skin-defects-with-growth-factors-and-biodegradable-collagen-carrier-histological-evaluation-in-animal-model
#6
G B Menchini Fabris, P F Nocini, F Gelpi, J Lotti, V Favero, G Zanotti, A Jurlaro, I Rosskopf, T Lotti, A Barone, G Castegnaro, D De Santis
The aim of the present study is to evaluate the effects on skin regeneration of a new collagen matrix (CM-10826) when used in different combination with or without growth factors, using skin regeneration without membrane as control. An area of 10x15 cm on rabbit back was shaved and three circular wounds on test side were covered with a differently soaked membrane. The first wound was soaked with Epidermal Growth Factor (EGF, 26mg/130mL) (Test EGF), the second with Platelet-Derived Growth Factor (PDGF, 6mg/120mL) (Test PDGF) and the third with EGF (13mg/65mL) and PDGF (3mg/60mL) (Test EGF+PDGF)...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28559185/novel-dendritic-structure-of-alginate-hybrid-nanoparticles-for-effective-anti-viral-drug-delivery
#7
K S Joshy, Anne George, Jiya Jose, Nandakumar Kalarikkal, Laly A Pothen, Sabu Thomas
Lipid-polymer hybrid nanoparticles have recently gathered much attention as nanoplatforms for drug delivery applications due to their unique structural properties. In this study zidovudine (AZT) loaded hybrid nanoparticles of alginate (ALG) and stearic acid- poly ethylene glycol (SA-PEG) were synthesized. The structural characterization of drug loaded hybrid nanoparticles were studied using FT-IR spectroscopy, DLS and TEM analysis. These hybrid nanoparticles showed dendritic morphology and it can be used as an efficient carrier for zidovudine...
October 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28548818/pla-pbat-bionanocomposites-with-antimicrobial-natural-rosin-for-green-packaging
#8
Hesham Moustafa, Nadia El Kissi, Ahmed I Abou-Kandil, Mohamed S Abdel-Aziz, Alain Dufresne
The use of biodegradable polymers is of great importance nowadays in many applications. Some of the most commonly used biopolymers are polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) due to their superior properties and availability. In this manuscript, we use a facile and green modification method of organoclay (OC) by antimicrobial natural rosin which is considered as a toxicity-free reinforcing material, thus keeping the green character of the material. It increases the interlayer spacing between the clay platelets...
June 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28532338/design-of-amphiphilic-pcl-peg-pcl-block-copolymers-as-vehicles-of-ginkgolide-b-and-their-brain-targeting-studies
#9
Xi-Qing Yan, Yong-Li Shi, Qing-Feng Jiang, Guan-Fang Ping, Zhi-Jian Deng
The amphiphilic PEG-b-PCL block copolymers were synthesized by ring-opening polymerization. The specific and selective antagonists of platelet activating factor, Ginkgolide B (GB), was successfully encapsulated in the synthesized PEG-PCL nanoparticles (NPs) with high Encapsulation Efficiency and Drug Loading. The synthesis of different PEG-PCL copolymers were confirmed with FTIR and (1)H NMR spectra. The morphology and particles size distribution of cargo-free PEG-PCL NPs were studied by transmission electron microscope (TEM) analysis and Malvern laser particle analyzer...
May 28, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28399723/germline-heterozygous-variants-in-genes-associated-with-familial-hemophagocytic-lymphohistiocytosis-as-a-cause-of-increased-bleeding
#10
Marcus Fager Ferrari, Eva Leinoe, Maria Rossing, Eva Norström, Karin Strandberg, Tobias Steen Sejersen, Klaus Qvortrup, Eva Zetterberg
Familial hemophagocytic lymphohistiocytosis (FHL) is caused by biallelic variants in genes regulating granule secretion in cytotoxic lymphocytes. In FHL3-5, the affected genes UNC13D, STX11 and STXBP2 have further been shown to regulate the secretion of platelet granules, giving rise to compromised platelet function. Therefore, we aimed to investigate platelet degranulation in patients heterozygous for variants in UNC13D, STX11 and STXBP2. During the work-up of patients referred to the Coagulation Unit, Skåne University Hospital, Malmö, Sweden and the Department of Hematology, Rigshospitalet, Copenhagen, Denmark due to bleeding tendencies, 12 patients harboring heterozygous variants in UNC13D, STX11 or STXBP2 were identified using targeted whole exome sequencing...
April 11, 2017: Platelets
https://www.readbyqxmd.com/read/28326239/nanostructured-carbon-materials-decorated-with-organophosphorus-moieties-synthesis-and-application
#11
Giacomo Biagiotti, Vittoria Langè, Cristina Ligi, Stefano Caporali, Maurizio Muniz-Miranda, Anna Flis, K Michał Pietrusiewicz, Giacomo Ghini, Alberto Brandi, Stefano Cicchi
A new synthetic approach for the production of carbon nanomaterials (CNM) decorated with organophosphorus moieties is presented. Three different triphenylphosphine oxide (TPPO) derivatives were used to decorate oxidized multiwalled carbon nanotubes (ox-MWCNTs) and graphene platelets (GPs). The TPPOs chosen bear functional groups able to react with the CNMs by Tour reaction (an amino group), nitrene cycloaddition (an azido group) or CuAAC reaction (one terminal C-C triple bond). All the adducts were characterized by FTIR, Raman spectroscopy, TEM, XPS, elemental analysis and ICP-AES...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28301205/intratendon-delivery-of-leukocyte-poor-platelet-rich-plasma-improves-healing-compared-with-leukocyte-rich-platelet-rich-plasma-in-a-rabbit-achilles-tendinopathy-model
#12
Ruijian Yan, Yanjia Gu, Jisheng Ran, Yejun Hu, Zefeng Zheng, Mengfeng Zeng, Boon Chin Heng, Xiao Chen, Zi Yin, Weishan Chen, Weiliang Shen, Hongwei Ouyang
BACKGROUND: Chronic tendinopathy is a commonly occurring clinical problem that affects both athletes and inactive middle-aged patients. Although some studies have shown that different platelet-rich plasma (PRP) preparations could exert various therapeutic effects in vitro, the role of leukocytes in PRP has not yet been defined under tendinopathy conditions in vivo. PURPOSE: This study compared the effects of the intratendon delivery of leukocyte-poor PRP (Lp-PRP) versus leukocyte-rich PRP (Lr-PRP) in a rabbit chronic tendinopathy model in vivo...
July 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28281715/metal-oxide-decorated-layered-silicate-magadiite-for-enhanced-properties-insight-from-zno-and-cuo-decoration
#13
Qiushi Wang, Yifu Zhang, Jiqi Zheng, Yu Wang, Tao Hu, Changgong Meng
Surface modification of a layered silicate magadiite (mag) was accomplished using cetyltrimethyl ammonium bromide (CTAB), copper oxide (CuO) and zinc oxide (ZnO). All the ions were intercalated using an ion-exchange reaction, and CuO and ZnO are prepared by a precipitation method. A precursor of CTAB modified mag enables good dispersion of the metal oxide on the surface of the lamellas. Characterization techniques (XRD, XRF, TGA, FTIR and XPS spectroscopy) confirmed that CuO and ZnO are homogeneously immobilized onto the silicate sheets of mag...
March 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28218402/characterization-of-the-%C3%AE-and-p-phase-precipitates-in-the-cmsx-4-single-crystal-superalloy
#14
B Dubiel, P Indyka, T Moskalewicz, A Kruk, M Zubko, I Kalemba-Rec, K Berent
A combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and scanning-transmission electron microscopy (STEM) using high-angle annular-dark-field (HAADF) imaging, focussed ion beam- scanning electron microscopy (FIB-SEM) tomography, selected area electron diffraction with beam precession (PED), as well as spatially resolved energy-dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS), was used to investigate topologically close-packed (TCP) phases, occurring in the CMSX-4 superalloy subjected to high temperature annealing and creep deformation...
February 20, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28169116/utilization-and-effectiveness-of-desmopressin-acetate-after-cardiac-surgery-supplemented-with-point-of-care-hemostatic-testing-a-propensity-score-matched-analysis
#15
David Orlov, Stuart A McCluskey, Jeannie Callum, Vivek Rao, Jacobo Moreno, Keyvan Karkouti
OBJECTIVES: To explore the utilization pattern and hemostatic effectiveness of desmopressin acetate (DDAVP) supplemented with point-of-care (POC) hemostatic testing in contemporary cardiac surgery. DESIGN: Retrospective, observational study. SETTING: Single quaternary care university hospital. PARTICIPANTS: The study comprised 2,468 consecutive patients undergoing cardiac surgery-1,237 before and 1,231 after the introduction of POC testing...
November 17, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28103989/-experimental-research-on-the-effects-of-different-activators-on-the-formation-of-platelet-rich-gel-and-the-release-of-bioactive-substances-in-human-platelet-rich-plasma
#16
Y Yang, W Zhang, B Cheng
Objective: To explore the effects of calcium gluconate and thrombin on the formation of platelet-rich gel (PRG) and the release of bioactive substances in human platelet-rich plasma (PRP) and the clinical significance. Methods: Six healthy blood donors who met the inclusion criteria were recruited in our unit from May to August in 2016. Platelet samples of each donor were collected for preparation of PRP. (1) PRP in the volume of 10 mL was collected from each donor and divided into thrombin activation group (TA, added with 0...
January 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28091639/gold-nanoparticles-stabilized-by-cationic-carbosilane-dendrons-synthesis-and-biological-properties
#17
Cornelia E Peña-González, Elzbieta Pedziwiatr-Werbicka, Dzmitry Shcharbin, Carlos Guerrero-Beltrán, Viktar Abashkin, Svetlana Loznikova, José L Jiménez, M Ángeles Muñoz-Fernández, Maria Bryszewska, Rafael Gómez, Javier Sánchez-Nieves, F Javier de la Mata
Gold nanoparticles (AuNPs) and polycationic macromolecules are used as gene carriers. Their behaviour is dependent on several factors, such as the size and type of the framework, charge, etc. We have combined both types of systems and prepared AuNPs covered with cationic carbosilane dendrons with the aim to evaluate their biocompatibility. Water soluble dendronized cationic AuNPs were prepared following a straightforward procedure from dendrons, a gold precursor and a reducing agent in water and were characterized by (1)H NMR, transmission electron microscopy (TEM), dynamic light scattering (DLS), thermogravimetric analysis (TGA), ultraviolet spectroscopy (UV), and zeta potential (ZP)...
July 11, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27936777/peptizing-mechanism-at-the-molecular-level-of-laponite-nanoclay-gels
#18
Philip Kensbock, Dan Eugen Demco, Smriti Singh, Khosrow Rahimi, Radu Fechete, Andreas Walther, Annette Monika Schmidt, Martin Möller
In the presence of additives such as etidronic acid (1-hydroxyethane-1,1-diphosphonic acid, HEDP), a process of peptizing of Laponite clay gels takes place. The peptizing process at the molecular level was directly revealed by (31)P and (1)H high-resolution magic-angle sample spinning (HRMAS) NMR spectroscopy. Two NMR spectral components were detected and assigned to free etidronic acid and bound to the Laponite disk edges. Furthermore, with increase of temperature the ratio of bound-to-free etidronic acid increases...
January 10, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27926787/comparison-of-the-effects-of-a-balanced-crystalloid-based-and-a-saline-based-tetrastarch-solution-on-canine-whole-blood-coagulation-and-platelet-function
#19
RANDOMIZED CONTROLLED TRIAL
Annina Reuteler, Shannon Axiak-Flammer, Judith Howard, Katja-Nicole Adamik
OBJECTIVE: To evaluate the effects of a 6% hydroxyethyl starch (130/0.42) solution in either a buffered, electrolyte-balanced (HES-BAL), or a saline (HES-SAL) carrier solution on canine platelet function and whole blood coagulation. DESIGN: Prospective, randomized study. SETTING: University teaching hospital. ANIMALS: Thirty-seven client-owned dogs undergoing general anesthesia for arthroscopy or imaging studies. INTERVENTIONS: Dogs received a 15 mL/kg intravenous bolus of HES-SAL (n = 13), HES-BAL (n = 14), or a modified Ringer's solution (n = 10) over 30-40 minutes...
January 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/27924343/synthesis-and-formulation-of-functional-bionanomaterials-with-superoxide-dismutase-activity
#20
Marko Pavlovic, Paul Rouster, Istvan Szilagyi
Layered double hydroxide (LDH) nanoparticles were prepared and used as solid support for superoxide dismutase (SOD) enzymes. Structural features were studied by XRD, spectroscopic methods (IR, UV-Vis and fluorescence) and TEM, while colloidal stability of the obtained materials was investigated by electrophoresis and light scattering in aqueous dispersions. The SOD quantitatively adsorbed on the LDH by electrostatic and hydrophobic interactions and kept its structural integrity upon immobilization. The composite material showed moderate resistance against salt-induced aggregation in dispersions, therefore, heparin polyelectrolyte was used to improve the colloidal stability of the system...
January 7, 2017: Nanoscale
keyword
keyword
13766
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"