Abstract:
:The aim of this pilot study was to evaluate the bioactive, surface-coated polycaprolactone-co-lactide scaffolds as bone implants in a tibia critical size defect model. Polycaprolactone-co-lactide scaffolds were coated with collagen type I and chondroitin sulfate and 30 piled up polycaprolactone-co-lactide scaffolds were implanted into a 3 cm sheep tibia critical size defect for 3 or 12 months (n = 5 each). Bone healing was estimated by quantification of bone volume in the defects on computer tomography and microcomputer tomography scans, plain radiographs, biomechanical testing as well as by histological evaluations. New bone formation occurred at the proximal and distal ends of the tibia in both groups. The current pilot study revealed a mean new bone formation of 63% and 172% after 3 and 12 months, respectively. The bioactive, surface coated, highly porous three-dimensional polycaprolactone-co-lactide scaffold stack itself acted as a guide rail for new bone formation along and into the implant. These preliminary data are encouraging for future experiments with a larger group of animals.
journal_name
J Biomater Appljournal_title
Journal of biomaterials applicationsauthors
Rentsch C,Schneiders W,Hess R,Rentsch B,Bernhardt R,Spekl K,Schneider K,Scharnweber D,Biewener A,Rammelt Sdoi
10.1177/0885328212471409subject
Has Abstractpub_date
2014-01-01 00:00:00pages
654-66issue
5eissn
0885-3282issn
1530-8022pii
0885328212471409journal_volume
28pub_type
杂志文章abstract::Antenna coupling microwave plasma enables a highly oxidative treatment of the outmost surface of polypropylene (PP) nonwoven fabric within a short time period. Subsequently, grafting copolymerization with acrylic acid (AAc) makes the plasma-treated fabric durably hydrophilic and excellent in water absorbency. With hig...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
doi:10.1106/088532802030478
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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
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doi:10.1106/GX1T-2JC6-QWC6-69GC
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abstract::The process of molecular self-assembly plays a crucial role in formulation of polymeric nanoparticulated drug delivery carriers as it creates the possibility for enhanced drug encapsulation and carrier surface engineering. This study aimed to develop a novel self-assembled polymeric micelles for targeted delivery in t...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
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abstract::The objective of this study is to evaluate the osteoconductivity and bioactivity of the Bonelike graft in repairing surgical cystic bone defects. Bonelike is implanted in 11 patients, aged between 24 and 53 years with a mean age of 36 years, consisting of 5 men and 6 women. According to the standard follow up protocol...
journal_title:Journal of biomaterials applications
pub_type: 临床试验,杂志文章
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abstract::L-Tyrosine polyurethanes (LTUs) have been synthesized by structural modification of the poly (amino acid) backbone to circumvent the problems associated with the processing of poly (amino acids) arising from their high crystallinity, insolubility in common organic solvents, and high glass-transition and melting temper...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
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abstract::Phase-sensitive in situ gel-forming controlled release formulations of insulin were prepared using poly(lactide-co-glycolide) and a solvent system consisting of various proportions of benzyl benzoate and benzyl alcohol. The in vitro release samples of formulations were assayed for insulin content by enzyme linked immu...
journal_title:Journal of biomaterials applications
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abstract::Reconstruction of critical sized bone injuries is a major problem that continues to inspire the design of new materials and grafts. Natural ceramics (hydroxyapatite (HA) coralline HA, or synthetic HA) and β-tricalcium phosphate (β-TCP) are being explored for use as scaffolds in bone tissue engineering, among several o...
journal_title:Journal of biomaterials applications
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abstract::The aim of this work was to study the cytotoxicity of different fractions of gold nanoparticles prepared by ultrasonic spray pyrolysis from gold scrap. The target cells were rat thymocytes, as a type of nonproliferating cells, and L929 mouse fibroblasts, as a type of continuous proliferating cells. Fractions 1 and 2, ...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
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abstract::Sodium alginate is an effective biomaterial for tissue engineering applications. Non-purified alginate is contaminated with protein, lipopolysaccharide, DNA, and RNA, which could elicit adverse immunological reactions. We developed a purification protocol to generate biocompatible alginate based on (a) activated charc...
journal_title:Journal of biomaterials applications
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abstract::The animal immune response against Galα1,3-Galβ1-4GlcNAc-R(α-Gal) epitopes gives an important cause for the failure of glutaraldehyde(GA)-fixed cardiac xenografts. This study aimed to assess the in vivo effect of our novel combined anticalcification treatment, which includes immunologic modification, using α1,3-galact...
journal_title:Journal of biomaterials applications
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abstract::Melt electrowriting (MEW) can print high-resolution scaffolds with the ultrafine fibers from 800 nm to 20 µm. However, the cell seeding efficiency relatively low due to the large pore size of the MEW scaffold. Here, we reported a method to solve this dilemma by electrospinning a gelatin methacrylate (GelMA) hydrogel f...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
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更新日期:2021-01-01 00:00:00
abstract::A series biodegradable poly (γ-glutamic acid)/beta-tricalcium phosphate (γ-PGA/TCP) nanocomposites were prepared which were composed of poly-γ-glutamic acid polymerized in situ with β-tricalcium phosphate and physiochemically characterized as bone graft substitutes. The particle size via dynamic light scattering, the ...
journal_title:Journal of biomaterials applications
pub_type: 杂志文章
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更新日期:2016-07-01 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::The setup of colloidal hybrid nanosystems based on biomimetic calcium phosphate apatites doped with europium ions has recently raised great interest in the pharmacological community, especially due to their bio-inspired character. This is especially relevant in relation with medical imaging for cancer diagnosis. Quest...
journal_title:Journal of biomaterials applications
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abstract::Biomaterials and devices have been used in a variety of applications ranging from disposable extracorporeal devices and soft and hard tissue augmentation, to total artificial internal organs. However, there are risks and failures in each application which are a result of undesirable biological interactions. This artic...
journal_title:Journal of biomaterials applications
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doi:10.1177/088532829300800104
更新日期:1993-07-01 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
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journal_title:Journal of biomaterials applications
pub_type: 杂志文章
doi:10.1177/0885328220931733
更新日期:2020-09-01 00:00:00
abstract::Among biomaterials used as implants in human body, sutures constitute the largest groups of materials having a huge market exceeding $1.3 billion annually. Sutures are the most widely used materials in wound closure and have been in use for many centuries. With the development of the synthetic absorbable polymer, poly...
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pub_type: 历史文章,杂志文章,评审
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更新日期:2010-11-01 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...
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journal_title:Journal of biomaterials applications
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journal_title:Journal of biomaterials applications
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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...
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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
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journal_title:Journal of biomaterials applications
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abstract::In this study, the effects of sodium carbonate (Na(2)CO(3) ) solution with different concentrations (10, 15, 20, and 25 wt%) as liquid phase on the setting time and compressive strength of tricalcium silicate bone cements are investigated. The in vitro bioactivity and degradability of the resultant Ca(3)SiO(5)-Na(2)CO...
journal_title:Journal of biomaterials applications
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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
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abstract::The purpose of this research was to develop novel nanoparticles (NPs) of star-like copolymer mannitol-functionalized poly(lactide)-vitamin E TPGS (M-PLA-TPGS) for paclitaxel delivery for prostate cancer treatment, and evaluate their therapeutic effects in prostate cancer cell line and animal model in comparison with t...
journal_title:Journal of biomaterials applications
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