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Showing 1-30 of 177 results for "C3646" within Papers
Velyana Georgieva et al.
Chemistry Central journal, 6(1), 81-81 (2012-08-04)
Chitosan is the second most abundant nitrogen containing biopolymer in nature, obtained from the shells of crustaceans, particularly crabs, shrimp and lobsters, which are waste products of seafood processing industries. It has great potential application in the areas of biotechnology
Mariela Agotegaray et al.
Journal of nanoscience and nanotechnology, 14(5), 3343-3347 (2014-04-17)
New magnetic devices consisting of magnetite functionalized with oleic acid and chitosan have been synthesized and employed to the loading of Diclofenac as potential tool for treatment of targeted inflammatory diseases. Magnetic loaded and un-loaded nanoparticles have been thoroughly characterized
Prabhu Prabhakara et al.
Pakistan journal of pharmaceutical sciences, 26(4), 779-786 (2013-07-03)
Site-specific delivery of anticancer based therapy of human cancers has led to several remarkable outcomes, particularly in the therapy of breast cancer and lymphoma. Camptothecin, a plant secondary metabolite is widely used in the treatment of metastatic breast cancer and
Qianqian Lyu et al.
The Biochemical journal, 461(2), 335-345 (2014-04-29)
Chitosanase is able to specifically cleave β-1,4-glycosidic bond linkages in chitosan to produce a chito-oligomer product, which has found a variety of applications in many areas, including functional food and cancer therapy. Although several structures for chitosanase have been determined
Sandra Elisa Haas et al.
Pharmaceutical development and technology, 19(7), 769-778 (2013-09-04)
The aim of this study was to develop innovative nanosystems with isopropyl myristate as the oil core of self-assembly nanovesicles constituted of chitosan and lecithin using a 2(3) factorial design. The factors analyzed were chitosan (X1, levels 4 and 8
Lili Zhang et al.
Journal of chromatography. A, 1365, 86-93 (2014-09-30)
Fourteen chitosan 3,6-diphenylcarbamate-2-urea derivatives were synthesized using well-deacetylated chitosan and the corresponding phenyl isocyanates. After coating them on silica gel, their chiral recognition abilities were evaluated as the chiral stationary phases (CSPs) for high-performance liquid chromatography. These coated-type CSPs exhibited
Dae-Sung Lee et al.
Food chemistry, 148, 97-104 (2013-11-23)
In this study, the antioxidant and antimicrobial activities of chitosan-caffeic acid, chitosan-ferulic acid, and chitosan-sinapic acid conjugates with different grafting ratios were investigated. The synthesized chitosan-hydroxycinnamic acid conjugates were verified by performing (1)H NMR and differential scanning calorimetry analysis. The
I-Mo Fang et al.
Experimental eye research, 130, 38-50 (2014-12-06)
The purpose of the present study was to investigate the protective effect and mechanism of chitosan oligonucleotides (COS) on retinal ischemia and reperfusion (I/R) injury. Rats pretreated with PBS, low-dose COS (5 mg/kg), or high-dose COS (10 mg/kg) were subjected to retinal
Osama A A Ahmed et al.
Expert opinion on drug delivery, 11(7), 1005-1013 (2014-04-08)
To optimize and use of glimepiride (GMD)-loaded self-nanoemulsifying delivery systems (SNEDs) for the preparation of transdermal patches. Mixture design was utilized to optimize GMD-loaded SNEDs in acidic and aqueous pH media. Optimized GMD-loaded SNEDs were used in the preparation of
Tsung-Wei Huang et al.
Artificial cells, nanomedicine, and biotechnology, 47(1), 564-570 (2019-03-13)
Developing a biomaterial that promotes regeneration of both respiratory epithelium (RE) and olfactory neuroepithelium (ON) improves the surgical outcome of endoscopic sinus surgery. Although chitosan (CS) inhibits mucociliary differentiation of RE, it has been reported to regenerate ON. In addition
Hsiao-Ying Chiu et al.
Scientific reports, 7(1), 10113-10113 (2017-09-02)
Mesenchymal stem cells (MSCs) in conventional monolayer culture are heterogeneous and contain a significant portion of senescent cells. MSCs cultured on chitosan film form 3-dimenional spheres, increase in stemness and differentiation capability; however, the underlying mechanisms remain elusive. We first
Ching-Wen Tsai et al.
Artificial cells, nanomedicine, and biotechnology, 46(8), 1852-1863 (2017-10-31)
This study evaluated the effect of chitosan, poly vinyl alcohol (PVA) and poly (2-hydroxyethyl methacrylate) (pHEMA) on delaying the human fibroblast senescence. Cells could form suspending multicellular spheroids on these biomaterials, but only chitosan was capable of decreasing the SA
J Pradeep Kumar et al.
Journal of biomedical nanotechnology, 10(6), 970-981 (2014-04-23)
The scaffolds for bone tissue engineering should be porous to harbor the growth of new tissue ingrowths, biodegradable with no toxic end products, and biocompatible with no cytotoxicity. In this study we report that Diopside (CaMgSi2O6) (Dp) particles can be
Lee A Hadwiger
Plant science : an international journal of experimental plant biology, 208, 42-49 (2013-05-21)
Chitosan, a naturally occurring polymer, became available in the 1980s in industrial quantities enabling it to be tested as an agricultural chemical. A usual procedure for developing agricultural chemicals starts by testing a number of different chemically synthesized molecules on
Hongyu Yang et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 68(1), 209-216 (2013-07-05)
Ethylenediaminetetraacetic dianhydride (EDTAD)-modified magnetic-Fe3O4 chitosan (EMC), prepared using the cross-link agent glutaraldehyde and chemicals Fe3O4, chitosan, and EDTAD, was used to compare the adsorption of methylene blue (MB) with magnetic chitosan (MC). The composite structure was confirmed by multiple characterization
Frederik T Larsen et al.
Vaccines, 8(2) (2020-05-21)
Infectious bronchitis virus (IBV) is a highly contagious avian coronavirus. IBV causes substantial worldwide economic losses in the poultry industry. Vaccination with live-attenuated viral vaccines, therefore, are of critical importance. Live-attenuated viral vaccines, however, exhibit the potential for reversion to
Bo Xiao et al.
Gastroenterology, 146(5), 1289-1300 (2014-02-08)
Nanoparticles have been explored as carriers of small interfering RNAs (siRNAs) and might be developed to treat patients with inflammatory bowel disease (IBD). Overexpression of CD98 on the surface of colonic epithelial cells and macrophages promotes the development and progression
Sirong Tan et al.
Journal of agricultural and food chemistry, 62(8), 1866-1874 (2014-02-01)
Chitosan (CTS) and capsaicin (CAP) are two kinds of effective ingredients for antiobesity, which are extracted from crab shells and Capsicum annuum. However, the strong taste of CAP makes it difficult to consume, and the antiobesity ability of CTS is
Corentin C Loron et al.
Nature, 570(7760), 232-235 (2019-05-24)
Fungi are crucial components of modern ecosystems. They may have had an important role in the colonization of land by eukaryotes, and in the appearance and success of land plants and metazoans1-3. Nevertheless, fossils that can unambiguously be identified as
S Dheeranupattana et al.
Pakistan journal of biological sciences : PJBS, 16(18), 950-954 (2014-02-08)
The study purposed to investigate the protein expression of Stemona alkaloids biosynthesis response to chitosan elicitor by 2D gel electrophoresis. The total proteins extraction of Stemona roots were performed for comparison with the control and chitosan treatments. It was found
A L Kavitha et al.
Journal of nanoscience and nanotechnology, 13(1), 98-104 (2013-05-08)
This work was aimed to develop reusable magnetite chitosan composite containing carbon paste electrode for biosensor application. Glucose oxidase (GOx) enzyme was used to prepare GOx-magnetite-chitosan nanocomposite containing carbon paste electrode for sensitive detection of glucose. The immobilized enzyme retained
Kyriaki G Zinoviadou et al.
Food & function, 3(3), 312-319 (2012-02-03)
Oil-in-water emulsions (10% w/w n-tetradecane) were prepared at pH = 5.7 by using, as surface active agents, electrostatically formed complexes of sodium stearoyl lactylate (SSL) at a concentration of 0.4% (w/w) and chitosan (CH) in a concentration range between 0
Pranee Lertsutthiwong et al.
Journal of environmental sciences (China), 25(2), 262-267 (2013-04-20)
The effects of chitosan characteristics including the degree of deacetylation, molecular weight, particle size, pH pretreatment and immobilization time on the immobilization of nitrite-oxidizing bacteria (NOB) on biopolymeric chitosan were investigated. Nitrite removal efficiency of immobilized NOB depended on the
Ling Zhao et al.
Artificial cells, blood substitutes, and immobilization biotechnology, 32(1), 25-40 (2004-03-19)
The mechanical properties of biocompatible microparticles including alginate microspheres and alginate-chitosan microcapsules with different wall thickness were determined using a micromanipulation technique. Single microparticles with diameters of 20-60 microm were compressed to a given deformation and held, and compressed to
Sara Gnavi et al.
International review of neurobiology, 109, 1-62 (2013-10-08)
Various biomaterials have been proposed to build up scaffolds for promoting neural repair. Among them, chitosan, a derivative of chitin, has been raising more and more interest among basic and clinical scientists. A number of studies with neuronal and glial
Pallab Datta et al.
Journal of biomedical nanotechnology, 9(5), 870-879 (2013-06-28)
Most polymeric nanofibers used for bone tissue engineering lack adequate functional groups for bioactivity. This study explores the potential of nanofibers of phosphate functionalized derivative of chitosan-N-methylene phosphonic chitosan (NMPC) for bone tissue engineering. Nanofibers were fabricated by electrospinning of
Abdelkrim El Kadib et al.
Journal of nanoscience and nanotechnology, 14(1), 308-331 (2014-04-16)
Polysaccharides are a new class of pervasive biopolymers that display many advantages including wide availability, sustainability, inherent inclusion of chemical functionality, biocompatibility and biodegradability. Current efforts are focused on the catalytic transformation of these macromolecules into fuels and platform chemicals.
Cara E Ellis et al.
Islets, 5(5), 216-225 (2013-11-23)
Islet transplantation is a promising treatment for Type 1 diabetes; however limitations of the intra-portal site and poor revascularization of islets must be overcome. We hypothesize that engineering a highly vascularized collagen-based construct will allow islet graft survival and function
R Shelma et al.
Journal of biomedical nanotechnology, 9(2), 167-176 (2013-05-01)
The overall goal of this paper was to enhance the bioavailability of orally delivered insulin. A mucoadhesive amphiphilic chitosan derivative, lauroyl sulphated chitosan (LSCS) was used as the oral carrier for insulin. Trans epithelial electrical resistance experiment was performed on
Changyun Qian et al.
Carbohydrate polymers, 97(2), 676-683 (2013-08-06)
In this study, N-phosphonium chitosans (NPCSs) with two degrees of substitution were synthesized in a homogeneous system as nonviral gene vectors. Grafted polymer/DNA complexes at various charge ratios were formulated and characterized. Particle sizes of NPCS/DNA complexes were between 110
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