Synthesis and properties of novel block copolymers containing poly(lactic-glycolic acid) and poly(ethyleneglycol) segments.

abstract：:Biodegradable polylactide implants allow secure fixation of osteochondral fractures with minimal adverse effects. The goal of this prospective, randomized animal study was to show whether osteoconductive effects can be achieved through the development of poly-L/DL(70/30)lactide composite implants with 10% beta-tricalc...

journal_title：Biomaterials

authors： Prokop A,Jubel A,Hahn U,Dietershagen M,Bleidistel M,Peters C,Höfl A,Rehm KE

更新日期：2005-07-01 00:00:00

abstract：:Unlike silkworm and spider silks assembled from very large and repetitive fibrous proteins, the bee and ant silks were recently demonstrated to consist of four small and non-repetitive coiled-coil proteins. The design principle for this silk family remains largely unknown and so far no structural study is available on...

journal_title：Biomaterials

authors： Shi J,Lua S,Du N,Liu X,Song J

更新日期：2008-06-01 00:00:00

abstract：:Poly(ortho esters) with a low glass transition temperature are semi-solid materials so that therapeutic agents can be incorporated at room temperature, without the use of solvents, by a simple mixing procedure. When molecular weights are limited to < 5 kDa, such materials are directly injectable using a needle size no...

journal_title：Biomaterials

authors： Helle J,Barr J,Ng SY,Shen HR,Schwach-Abdellaoui K,Gurny R,Vivien-Castioni N,Loup PJ,Baehni P,Mombelli A

更新日期：2002-11-01 00:00:00

abstract：:Peripherally inserted central catheters (PICCs) are hollow polymeric tubes that transport nutrients, blood and medications to neonates. To determine proper PICC placement, frequent X-ray imaging of neonates is performed. Because X-rays pose severe health risks to neonates, safer alternatives are needed. We hypothesize...

journal_title：Biomaterials

authors： Stevenson AT Jr,Reese LM,Hill TK,McGuire J,Mohs AM,Shekhar R,Bickford LR,Whittington AR

更新日期：2015-06-01 00:00:00

abstract：:Knee arthroplasty has reached a high degree of reliability. Many of the remaining long-term loosening cases are due to the polyethylene wear debris. The introduction of the alumina ceramic to polyethylene bearing couple had been a promising means for its reduction. The discussion of its applications in total knee repl...

journal_title：Biomaterials

authors： Heimke G,Leyen S,Willmann G

更新日期：2002-04-01 00:00:00

abstract：:Although PEGylated liposomes (PEG-LS) have been intensively studied as drug-delivery vehicles, the rigidity and the hydrophilic PEG corona of liposomal membranes often limits cellular uptake, resulting in insufficient drug delivery to target cells. Thus, it is necessary to develop a new type of lipid-based self-assemb...

journal_title：Biomaterials

authors： Saw PE,Yu M,Choi M,Lee E,Jon S,Farokhzad OC

更新日期：2017-04-01 00:00:00

abstract：:Lesions in the avascular part of 20 canine menisci were repaired by implantation of a porous polyurethane. Seven menisci were not repaired and served as controls. The repair tissue was characterized by biochemical and immunological analysis. The role of vascularity in healing was studied by perfusion of menisci with I...

journal_title：Biomaterials

authors： Klompmaker J,Veth RP,Jansen HW,Nielsen HK,de Groot JH,Pennings AJ,Kuijer R

更新日期：1996-09-01 00:00:00

abstract：:We report a preliminary study concerning the encapsulation modalities in nanoparticles of the anti-ischemic drug N6-cyclopentyladenosine (CPA) and its pro-drug 5'-octanoyl-CPA (Oct-CPA). The release of these compounds and the related pro-drug stability effects in human whole blood have been tested. Moreover, the influ...

journal_title：Biomaterials

authors： Dalpiaz A,Leo E,Vitali F,Pavan B,Scatturin A,Bortolotti F,Manfredini S,Durini E,Forni F,Brina B,Vandelli MA

更新日期：2005-04-01 00:00:00

abstract：:A surface functionalization strategy that produces substrates with well-controlled ligand density is critical to investigating the role of cell-substrate interactions in regulating cell adhesion, viability, migration, proliferation and differentiation. Towards this end, we have designed and synthesized a triblock prot...

journal_title：Biomaterials

authors： Fischer SE,Liu X,Mao HQ,Harden JL

更新日期：2007-08-01 00:00:00

abstract：:Cyclic RGD peptide-decorated polymeric micellar-like nanoparticles (MNP) based on PEGylated poly (trimethylene carbonate) (PEG-PTMC) were prepared for active targeting to integrin-rich cancer cells. An amphiphilic diblock copolymer, α-carboxyl poly (ethylene glycol)-poly (trimethylene carbonate) (HOOC-PEG-PTMC), was s...

journal_title：Biomaterials

authors： Jiang X,Sha X,Xin H,Chen L,Gao X,Wang X,Law K,Gu J,Chen Y,Jiang Y,Ren X,Ren Q,Fang X

更新日期：2011-12-01 00:00:00

abstract：:The design of peptide-based subunit vaccine formulations for the direct delivery of tumor antigen peptides (Aps) to dendritic cells (DCs) localized within draining lymph nodes (DLNs) is challenging. Mature DCs (mDCs) are abundantly distributed within DLNs but have dramatically reduced endocytic uptake and antigen-proc...

journal_title：Biomaterials

authors： Qian Y,Jin H,Qiao S,Dai Y,Huang C,Lu L,Luo Q,Zhang Z

更新日期：2016-08-01 00:00:00

abstract：:The urgent needs of functional arterial replacements for curing the vascular system diseases have been proposed for many years. However, an ideal small-diameter vascular scaffold, which is nonthrombogenic, minimizes intimal hyperplasia, matches the mechanical properties of natural vessels, and supports neovascular tis...

journal_title：Biomaterials

authors： Han F,Jia X,Dai D,Yang X,Zhao J,Zhao Y,Fan Y,Yuan X

更新日期：2013-10-01 00:00:00

abstract：:Multi-layered poly(glycerol-sebacate) (PGS) scaffolds with controlled pore microarchitectures were fabricated, combined with heart cells, and cultured with perfusion to engineer contractile cardiac muscle constructs. First, one-layered (1L) scaffolds with accordion-like honeycomb shaped pores and elastomeric mechanica...

journal_title：Biomaterials

authors： Park H,Larson BL,Guillemette MD,Jain SR,Hua C,Engelmayr GC Jr,Freed LE

更新日期：2011-03-01 00:00:00

abstract：:Tumor-activatable ultrasmall nanozyme generation is an unprecedented strategy to overcome intrinsically fatal defects of traditional reactive oxygen species (ROS)-based nanoagents for deep tumor penetration, including limited tissue-penetrating depth of external energy, heavy reliance on oxygen and nonspecific toxicit...

journal_title：Biomaterials

authors： Liu X,Liu Z,Dong K,Wu S,Sang Y,Cui T,Zhou Y,Ren J,Qu X

更新日期：2020-11-01 00:00:00

abstract：:Ultrasoft biomaterials-polymers, gels, and human soft tissues with an elastic modulus less than ∼100 kPa-are increasingly used in medical devices. While bacterial interactions (adhesion and biofilm formation) have been extensively studied on stiffer materials, little is known about how bacteria colonize ultrasoft mate...

journal_title：Biomaterials

authors： Wang Y,Guan A,Isayeva I,Vorvolakos K,Das S,Li Z,Phillips KS

更新日期：2016-07-01 00:00:00

abstract：:We studied non-implanted ultra-high molecular weight polyethylene (UHMWPE) knee components, that were gamma-sterilized in air and shelf-aged during 6 and 7 years, to explore fracture mechanisms in the degraded material. Prior to the fractography study, we assessed degradation through FTIR and optical density measureme...

journal_title：Biomaterials

authors： Puértolas JA,Larrea A,Gómez-Barrena E

更新日期：2001-08-01 00:00:00

abstract：:Mononuclear phagocyte system is the first target for injected nanomaterials. Monocytes/macrophages are the central actors for trafficking and clearance of magnetic nanoparticles in vivo. However the fate of nanosized magnetic label is an ongoing issue. Here we demonstrate that the monocyte/macrophage system shows a co...

journal_title：Biomaterials

authors： Luciani N,Wilhelm C,Gazeau F

更新日期：2010-09-01 00:00:00

abstract：:The study was to produce a novel hybrid poly-(lactic-co-glycolic acid) (PLGA)-gelatin/chondroitin/hyaluronate (PLGA-GCH) scaffold and evaluate its potentials in cartilage repair. The porous PLGA-GCH scaffold was developed to mimic the natural extra cellular matrix of cartilage. The differentiated mesenchymal stem cell...

journal_title：Biomaterials

authors： Fan H,Hu Y,Zhang C,Li X,Lv R,Qin L,Zhu R

更新日期：2006-09-01 00:00:00

abstract：:Concerns over disease transmission, high costs and limited supply have led to interest in synthetic grafts in the field of impaction bone grafting (IBG). Poly(DL-lactic acid) (PLA) grafts are attractive alternatives due to their biocompatibility, established safety and versatile manufacturing process. This study exami...

journal_title：Biomaterials

authors： Bolland BJ,Kanczler JM,Ginty PJ,Howdle SM,Shakesheff KM,Dunlop DG,Oreffo RO

更新日期：2008-08-01 00:00:00

abstract：:The kinetics of thrombin inhibition by antithrombin (AT) and heparin cofactor II (HC II) were analysed as a function of the heparin concentration, from 10(-9) to 10(-4) M. The initial concentrations of inhibitor (l) and thrombin (E) were set at equimolar levels (CI = CE = 10(-8) M). The experimental data indicate that...

journal_title：Biomaterials

authors： Maaroufi RM,Jozefowicz M,Tapon-Bretaudière J,Fischer AM

更新日期：1997-02-01 00:00:00

abstract：:Two kinds of layered atelocollagen materials cross-linked with hexamethylene diisocyanate (HMDIC), starch dialdehyde and glyoxal were enzymatically treated by bacterial collagenase. Evaluating collagenase digestion assay for these material showed progressive differences, particularly in the group of samples cross-link...

journal_title：Biomaterials

authors： Vizárová K,Bakos D,Rehákova M,Petríkova M,Panáková E,Koller J

更新日期：1995-11-01 00:00:00

abstract：:The non-specific interaction between nanoparticles (NPs) and plasma proteins occurs immediately after NPs enter the blood, resulting in the formation of the protein corona that thereafter replaces the original NPs and becomes what the organs and cells really see. Consequently, the in vivo fate of NPs and the biologica...

journal_title：Biomaterials

authors： Peng Q,Zhang S,Yang Q,Zhang T,Wei XQ,Jiang L,Zhang CL,Chen QM,Zhang ZR,Lin YF

更新日期：2013-11-01 00:00:00

abstract：:Selective isolation and purification of circulating tumor cells (CTCs) from whole blood is an important capability for both clinical medicine and biological research. Current techniques to perform this task place the isolated cells under excessive stresses that reduce cell viability, and potentially induce phenotype c...

journal_title：Biomaterials

authors： Li W,Reátegui E,Park MH,Castleberry S,Deng JZ,Hsu B,Mayner S,Jensen AE,Sequist LV,Maheswaran S,Haber DA,Toner M,Stott SL,Hammond PT

更新日期：2015-10-01 00:00:00

abstract：:Various compositions of Na2OCaO-P2O5 glasses are prepared to estimate glass formation, dissolution properties and cytotoxicity. In the wide composition range of 40 mol% of P2O5 or more, clear glass samples were obtained. The estimated glass forming region was consistent with other ternary phosphate glass systems. The ...

journal_title：Biomaterials

authors： Uo M,Mizuno M,Kuboki Y,Makishima A,Watari F

更新日期：1998-12-01 00:00:00

abstract：:Designing biomaterial scaffolds remains a major challenge in tissue engineering. Key to this challenge is improved understanding of the relationships between the scaffold properties and its degradation kinetics, as well as the cell interactions and the promotion of new matrix deposition. Here we present the use of non...

journal_title：Biomaterials

authors： Rice WL,Firdous S,Gupta S,Hunter M,Foo CW,Wang Y,Kim HJ,Kaplan DL,Georgakoudi I

更新日期：2008-05-01 00:00:00

abstract：:Human induced pluripotent stem cell (hiPSC) derived angiogenesis models present a unique opportunity for patient-specific platforms to study the complex process of angiogenesis and the endothelial cell response to biomaterial and biophysical changes in a defined microenvironment. We present a refined method for differ...

journal_title：Biomaterials

authors： Natividad-Diaz SL,Browne S,Jha AK,Ma Z,Hossainy S,Kurokawa YK,George SC,Healy KE

更新日期：2019-02-01 00:00:00

abstract：:This paper completes the model of biodegradation for biodegradable polymers that was previously developed by Wang et al. (Wang Y, Pan J, Han X, Sinka, Ding L. A phenomenological model for the degradation of biodegradable polymers. Biomaterials 2008;29:3393-401). Crystallisation during biodegradation was not considered...

journal_title：Biomaterials

authors： Han X,Pan J

更新日期：2009-01-01 00:00:00

abstract：:Combined treatment using nonviral agent-mediated enzyme/prodrug therapy and immunotherapy had been proposed as a powerful alternative method of cancer therapy. The present study was aimed to evaluate the cytotoxicity in vitro and the therapeutic efficacy in vivo when the cytosine deaminase/5-fluorocytosine (CD/5-FC) a...

journal_title：Biomaterials

authors： Liang B,He ML,Chan CY,Chen YC,Li XP,Li Y,Zheng D,Lin MC,Kung HF,Shuai XT,Peng Y

更新日期：2009-08-01 00:00:00

abstract：:Drug hepatotoxicity testing requires in vitro hepatocyte culture to maintain the long-term and stable liver specific functions. We developed a drug testing platform based on laminar-flow immediate-overlay hepatocyte sandwich perfusion culture. The immediate-overlay sandwich (collagen-coated porous polymeric membrane a...

journal_title：Biomaterials

authors： Xia L,Ng S,Han R,Tuo X,Xiao G,Leo HL,Cheng T,Yu H

更新日期：2009-10-01 00:00:00

abstract：:Titanium and its alloys are widely used in load-bearing implants as a result of their excellent mechanical properties and corrosion resistance. In order to improve their performances with respect to osseointegration, the use of bioactive coatings has been suggested. Polypyrrole (PPy) has been chosen as coating polymer...

journal_title：Biomaterials

authors： De Giglio E,Guascito MR,Sabbatin L,Zambonin G

更新日期：2001-10-01 00:00:00