Abstract：
:The controlled release of insulin from a series of biodegradable hybrid hydrogel network containing dextran derivative of allyl isocyanate (dex-AI) and poly (D,L) lactide diacrylate macromer (PDLLAM) over a wide range of composition ratio was investigated. Laser confocal scanning microscope was used to understand the insulin dispersion and release mechanism in the hydrogels. We found that the dispersion of insulin in the hydrogel network appeared to become less homogeneous as the PDLLAM composition in the hydrogel increased. The increase in hydrogel degradability imparted by PDLLAM incorporation shifted the hydrogel to a more open structure at a later release time, which facilitated the release rate and extent of insulin. From the result of release kinetics study (i.e., diffusion coefficient), insulin release occurred through diffusion and degradation controlled mechanisms. In addition, a comparison of the release characteristics of indomethacin, insulin and bovine serum albumin from the hydrogel network showed that the following parameters determined the release kinetics: drug molecular weight and size, hydrogel swellability and degradability, drug solubility in water and the hydrophobic interaction between drugs and the hydrogel network.
journal_name
J Biomater Appljournal_title
Journal of biomaterials applicationsauthors
Zhang Y,Chu CCdoi
10.1106/088532802024248subject
Has Abstractpub_date
2002-04-01 00:00:00pages
305-25issue
4eissn
0885-3282issn
1530-8022journal_volume
16pub_type
杂志文章abstract：:Tendon tears are a relevant concern for today's national health systems because of their social impact and high recurrence rate. The current gold standard for fixing tendon tears is surgical repair; however, this strategy is not able to fully re-establish tendon integrity and functionality. Tissue engineering approach...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328218779846
更新日期：2018-07-01 00:00:00
abstract：:Three types of commercially available ultra-high molecular weight polyethylene (UHMWPE) acetabular cups currently used in total hip arthroplasty have been studied by means of Raman micro-spectroscopy to unfold the microstructural modification induced by the oxidative degradation after accelerated aging with and withou...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328214548693
更新日期：2015-01-01 00:00:00
abstract：:Novel in situ polymerizable liquid three-arm biodegradable oligomeric polyesters based upon glycolic acid (GA), L-lactic acid (LLA), and their copolymers are synthesized and characterized. Injectable and in situ curable polymer neat resins and their composites formulated with bioabsorbable beta-tricalcium phosphate ar...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328206068691
更新日期：2007-07-01 00:00:00
abstract：:Cellulose acetate phthalate and Pluronic F-127 combined together (70:30 wt:wt) create a rigid, surface-eroding association polymer. To impart flexibility into the polymer system and allow for a drug delivery film that can contour to varying wound shapes, plasticizers were added. Triethyl citrate or tributyl citrate wa...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328213480979
更新日期：2014-01-01 00:00:00
abstract：:The incidence of fractures increases with age. This is partly due to extraosseous factors and partly to the increased fragility of the bone material itself. Ageing adversely affects the "quality" of human bone material, its elastic and ultimate properties. The hypothesis here is that these effects are caused by factor...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1106/5JUJ-TFJ3-JVVA-3RJ0
更新日期：2001-01-01 00:00:00
abstract：:The in vitro effect of platelet-rich plasma (PRP) on cell loading, proliferation, and osteogenic differentiation of human mesenchymal stem cells (MSC) is assessed on distinct resorbable and synthetic calcium phosphate scaffolds. A high specific surface area scaffold composed of calcium-deficient hydroxyapatite (CDHA; ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328207088269
更新日期：2008-09-01 00:00:00
abstract：:This investigation describes the synthesis and in vitro evaluation of cationic hydrogel sub-microparticles based on polydimethylaminoethylmethacrylate for oral insulin delivery. Polymerization of dimethylaminoethylmethacrylate was carried out in aqueous medium with potassium persulfate as the initiator. Quaternization...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328212437392
更新日期：2013-07-01 00:00:00
abstract：:Compounds of a silicone elastomer suitable for preparing maxillofacial prostheses, reinforced with various amounts of silica powder, have been studied for their mechanical response and wetting properties in terms of contact angle. Tensile strength and elongation at break showed an increase with increasing silica volum...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/088532829801300104
更新日期：1998-07-01 00:00:00
abstract：:The objective of the present study was to incorporate strontium into calcium phosphate cement combined with a lower single-dose local administration of bone morphogenetic protein-2 to enhance its in vivo biodegradation and bone tissue growth. After the creation of a rodent critical-sized femoral metaphyseal bone defec...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328218765847
更新日期：2018-07-01 00:00:00
abstract：:A biodegradable polylactic acid composite containing tricalcium phosphate microsphere was fabricated. The composite exhibited enhanced biocompatibility and a well-interconnected porous structure that enabled tissue ingrowth after degradation. The tricalcium phosphate microspheres had an average size of 106 ± 43 μm and...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328218763660
更新日期：2018-05-01 00:00:00
abstract：:Carbon-fibre-reinforced polyether ether ketone (CFR-PEEK) exhibits excellent biomechanical properties as it has an elastic modulus similar to bone. However, CFR-PEEK displays inferior biocompatibility compared with titanium alloy and coating techniques are therefore of interest in order to improve integration. In this...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328214521669
更新日期：2014-08-01 00:00:00
abstract：:Using a hydraulic stress simulator, the mechanical behavior of the porcine pericardium used in the construction of cardiac valve leaflets was characterized following the same procedure employed with calf pericardium in Part 1 of this study. One hundred fifty pairs of tissue samples were subjected to tensile testing to...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1106/3JXM-UTPN-PXTG-72DT
更新日期：2001-07-01 00:00:00
abstract：:Calcium phosphate fillers have been shown to increase cement osteoconductivity, but have caused drawbacks in cement properties. Hydroxyapatite and Brushite were introduced in an acrylic two-solution cement at varying concentrations. Novel composite bone cements were developed and characterized using rheology, injectab...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328214544770
更新日期：2014-11-01 00:00:00
abstract：:In this paper, the authors describe a novel type of hydrogel coating prepared from the copolymer of human serum albumin and oxidized dextran. The material was designed as a hydrogel sealant for polyester (Dacron®)-based vascular grafts. Dextran was chosen as a coating material due to its anti-thrombogenic properties. ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328213509676
更新日期：2014-05-01 00:00:00
abstract：:An electronic sensor system for urinary bladder pressure monitoring requires an imbedding into a biocompatible, flexible, and liquid-impermeable material. Poly(dimethylsiloxane) (PDMS) was selected in the present set-up as packaging material because it fulfills the abovementioned requirements. However, the surface of ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328211422119
更新日期：2013-02-01 00:00:00
abstract：:This study's aim consists of evaluating the adhesion and proliferation of mesenchymal stem cells (MSCs) derived from rat bone marrow on nanoparticle Titanium (Ti) surface. Hence, passage 3 MSCs were, respectively, seeded on nanoparticle Ti and pure Ti surfaces and then cultured for 32 h. Cell morphology and viability ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328211414750
更新日期：2013-01-01 00:00:00
abstract：:Staphylococcus epidermidis plays a major role in capsular contractures of silicone breast implants. This in vitro study evaluates the antibacterial effect of copper on S. epidermidis in silicone implants. Specimens of a silicone material used for breast augmentation (Cu0) and specimens coated with different copper con...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328212441957
更新日期：2013-08-01 00:00:00
abstract：:The aim of this study was to compare the osteogenic effects of periodontal ligament stem cells (PDLSCs) versus bone marrow mesenchymal stem cells (BMMSCs) in combination with Bio-Oss scaffolds on subcutaneous and critical-size defects in the immunodeficient rat calvarium. PDLSCs and BMMSCs were obtained from the same ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328214521846
更新日期：2014-08-01 00:00:00
abstract：:This study aims the in vivo biological characterization of an innovative minocycline delivery system, based on polymethylmethacrylate bone cement. Bone cements containing 1% or 2.5% (w/w) minocycline were formulated and evaluated through solid-state characterization. Biological evaluation was conducted in vivo, within...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328218795290
更新日期：2018-09-01 00:00:00
abstract：:Single nanofibers with chemical and functional properties consistent with artery extracellular matrix nanofibers were produced by electrospinning. Using weight ratios to mimic artery extracellular matrix, five materials were tested: (1) Collagen type I, (2) Collagen type I + Collagen type III, (3) Collagen type I + po...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328213477893
更新日期：2014-01-01 00:00:00
abstract：:Phenylalanine ethyl ester (PAE)-alginate (Alg) conjugate (PAE-Alg, PEA) was synthesized and formation of an amide bond between PAE and Alg was confirmed by Fourier transformed-infrared and (1)H nuclear magnetic resonance spectroscopy. The degree of PAE substitution was 3.5-4.7 (PAE group per hundred sugar residues of ...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328216630497
更新日期：2016-07-01 00:00:00
abstract：:The aim of this study was to investigate the effect of C-Graft particles on formation of new cementum and bone in periodontal bone defects in dog. Healing and tissue change were histologically determined at 2, 4, 8, and 16 weeks. Little bone or cementum formation was observed in the control group. A statistically sign...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328208094427
更新日期：2009-08-01 00:00:00
abstract：:Appropriate design of dialysis membranes requires correct values of structural parameters such as pore radius, surface porosity, water content and tortuosity. It is impossible, however, to find the pore radius of dialysis membranes using a mercury porosimeter or an electron microscope because the pores are only severa...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/088532828900400201
更新日期：1989-10-01 00:00:00
abstract：PURPOSE:A functionalized graphene oxide-based thermosensitive hydrogel loaded with docetaxel for intratumoral delivery was designed to enhance therapeutic efficacy and alleviate system toxicity. METHODS:First, graphene oxide was functionalized with chitosan to acquire high stability in physiological solutions. And the...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328215619583
更新日期：2016-03-01 00:00:00
abstract：:We assess the effects of chemical processing, ethylene oxide sterilization, and threading on bone surface and mechanical properties of bovine undecalcified bone screws. In addition, we evaluate the possibility of manufacturing bone screws with predefined dimensions. Scanning electronic microscopic images show that che...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328208092110
更新日期：2009-03-01 00:00:00
abstract：:Polyelectrolyte capsules are seen as promising nanotechnology based drug delivery systems. In previous works, we have demonstrated the possibility to fabricate bio-activated surface layer containing capsules with improved features in terms of biocompatibility. In this study, we have characterized the permeability prop...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328212446358
更新日期：2013-08-01 00:00:00
abstract：:Nanodrug delivery systems have been widely researched to achieve efficient antitumor drug delivery. However, the controlled drug delivery at tumor cells remains the main challenge for antitumor therapy. Herein, a pH and reduction-responsive nanocarrier based on green tea polyphenols was employed as a smart excipient f...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328220924539
更新日期：2020-08-01 00:00:00
abstract：:Hemocompatibility is the goal for any biomaterial contained in extracorporeal life supporting medical devices. The hallmarks for hemocompatibility include nonthrombogenicity, platelet preservation, and maintained platelet function. Both in vitro and in vivo assays testing for compatibility of the blood/biomaterial int...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章,评审
doi：10.1177/0885328214538866
更新日期：2014-10-01 00:00:00
abstract：:The effect of an ampholytic surfactant on the swelling properties of polymeric materials was studied, using various swelling liquids. Tablets were prepared consisting of hydroxypropyl methylcellulose, poly(oxyethylene) and sodium alginate. Tego betain was the non-ionic surfactant used as an additive in a series of sam...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1106/GX1T-2JC6-QWC6-69GC
更新日期：2000-07-01 00:00:00
abstract：:The development of an effective wound dressing with the ability to induce skin wound healing is a great challenge in medicine. Nanofibers are highly attractive for wound dressing preparation due to their properties such as hemostasis induction, good absorption of wound exudates, and facilitation of cell growth. Chitos...
journal_title：Journal of biomaterials applications
pub_type： 杂志文章
doi：10.1177/0885328217739562
更新日期：2018-01-01 00:00:00
