abstract：:We report the rational design of a chitosan-based drug delivery system. The chitosan derivative N-[(2-hydroxy-3-trimethylammonium)propyl]chitosan chloride (HTCC) was ionically cross-linked by sodium tripolyphosphate (TPP) to form sub-200-nm microgels that are responsive to pH changes. When these microgels were loaded ...

journal_title：Biomacromolecules

authors： Zhang H,Mardyani S,Chan WC,Kumacheva E

更新日期：2006-05-01 00:00:00

abstract：:A cellulose-chitin hybrid polysaccharide having alternatingly beta(1-->4)-linked D-glucose (Glc) and N-acetyl-d-glucosamine (GlcNAc) was synthesized via two modes of enzymatic polymerization. First, a sugar oxazoline monomer of Glcbeta(1-->4)GlcNAc (1) was designed as a transition-state analogue substrate (TSAS) monom...

journal_title：Biomacromolecules

authors： Kobayashi S,Makino A,Matsumoto H,Kunii S,Ohmae M,Kiyosada T,Makiguchi K,Matsumoto A,Horie M,Shoda S

更新日期：2006-05-01 00:00:00

abstract：:As an aim toward developing biologically mimetic and functional nanofiber-based tissue engineering scaffolds, we demonstrated the encapsulation of a model protein, fluorescein isothiocyanate-conjugated bovine serum albumin (fitcBSA), along with a water-soluble polymer, poly(ethylene glycol) (PEG), within the biodegrad...

journal_title：Biomacromolecules

authors： Zhang YZ,Wang X,Feng Y,Li J,Lim CT,Ramakrishna S

更新日期：2006-04-01 00:00:00

abstract：:Chitosan is a well sought-after polysaccharide in biomedical applications and has been blended with various macromolecules to mitigate undesirable properties. However, the effects of blending on the unique antibacterial activity of chitosan as well as changes in fatigue and degradation properties are not well understo...

journal_title：Biomacromolecules

authors： Sarasam AR,Krishnaswamy RK,Madihally SV

更新日期：2006-04-01 00:00:00

abstract：:Solid-state NMR is especially useful when the structures of peptides and proteins should be analyzed by taking into account the structural distribution, that is, the distribution of the torsion angle of the individual residue. In this study, two-dimensional spin-diffusion solid-state NMR spectra of 13C-double-labeled ...

journal_title：Biomacromolecules

authors： Ohgo K,Kawase T,Ashida J,Asakura T

更新日期：2006-04-01 00:00:00

abstract：:Electrically conducting polymeric membranes were prepared by incorporating multiwalled carbon nanotubes (MWCNTs) into bacterial cellulose pellicles produced by Gluconacetobacter xylinum. The MWCNTs were dispersed in a surfactant (cationic cetyl trimethylammonium bromide) solution, and cellulose pellicles were dipped i...

journal_title：Biomacromolecules

authors： Yoon SH,Jin HJ,Kook MC,Pyun YR

更新日期：2006-04-01 00:00:00

abstract：:Human serum albumin (HSA) is known to exist as N (pH approximately 7), B (pH approximately 9), and F (pH approximately 3.5) isomeric forms and an equilibrium intermediate state (I) accumulate in the urea induced unfolding pathway of HSA around 4.8-5.2 M urea concentrations. These states displayed characteristic struct...

journal_title：Biomacromolecules

authors： Ahmad B,Parveen S,Khan RH

更新日期：2006-04-01 00:00:00

abstract：:The electrospinning of polymer melts can offer an advantage over solution electrospinning, in the development of layered tissue constructs for tissue engineering. Melt electrospinning does not require a solvent, of which many are cytotoxic in nature, and the use of nonwater soluble polymers allows the collection of fi...

journal_title：Biomacromolecules

authors： Dalton PD,Klinkhammer K,Salber J,Klee D,Möller M

更新日期：2006-03-01 00:00:00

abstract：:A scanning laser system has been used to generate three-dimensional trimethylolpropane trimethacrylate (TRIM) cross-linked poly(2-hydroxylethyl methacrylate) polymer microstructures through azo-bis(isobutyro)nitrile (AIBN) photopolymerization using a 20 x 0.5 NA microscope objective and 365 nm laser excitation. Macrop...

journal_title：Biomacromolecules

authors： Northen TR,Brune DC,Woodbury NW

更新日期：2006-03-01 00:00:00

abstract：:The objective of these investigations was to test the hypothesis that a rapid cytoplasmic release profile from nanoparticles would potentiate the anticancer activity of cisplatin. Cisplatin-loaded nanoparticles with pH-responsive poly[2-(N,N-diethylamino)ethyl methacrylate] (PDEA) cores were synthesized from PDEA-bloc...

journal_title：Biomacromolecules

authors： Xu P,Van Kirk EA,Murdoch WJ,Zhan Y,Isaak DD,Radosz M,Shen Y

更新日期：2006-03-01 00:00:00

abstract：:A new synthetic route to beta-cyclodextrin-linked hyaluronic acid (HA-CD) was developed. This was based on the preparation of a HA derivative selectively modified with adipic dihydrazide (HA-ADH) and a beta-cyclodextrin derivative possessing an aldehyde function on the primary face, followed by their coupling by a red...

journal_title：Biomacromolecules

authors： Charlot A,Heyraud A,Guenot P,Rinaudo M,Auzély-Velty R

更新日期：2006-03-01 00:00:00

abstract：:The mechanical and melt flow properties of two thermoplastic potato starch materials with different amylose contents were evaluated. The materials were prepared by mixing starch, glycerol, and water, mainly in the weight proportions of 10:3:4.5. Compression molding was used to produce sheets/films with a thickness in ...

journal_title：Biomacromolecules

authors： Thunwall M,Boldizar A,Rigdahl M

更新日期：2006-03-01 00:00:00

abstract：:Electrospinning is a versatile process used to prepare micro- and nano- sized fibers from various polymers dissolved in volatile solvents. In this report, cellulose and cellulose-heparin composite fibers are prepared from nonvolatile room temperature ionic liquid (RTIL) solvents by electrospinning. RTILs are extracted...

journal_title：Biomacromolecules

authors： Viswanathan G,Murugesan S,Pushparaj V,Nalamasu O,Ajayan PM,Linhardt RJ

更新日期：2006-02-01 00:00:00

abstract：:A variety of important biological events are mediated by the multivalent interaction between relevant oligosaccharides and multiple saccharide receptors on lectins, toxins, and cell surfaces; a variety of glycopolymeric materials have therefore been investigated in studies aimed at manipulating these events. The synth...

journal_title：Biomacromolecules

authors： Polizzotti BD,Kiick KL

更新日期：2006-02-01 00:00:00

abstract：:Dextran surface grafting density was systematically varied via a two-step process involving SiO(2) amination by aminopropyltriethoxy silane (APTES) followed by oxidized dextran (M(w) = 110 kDa) chemisorption. Dextran oxidation kinetics with sodium metaperiodate (NaIO(4)) were quantified by (1)H NMR and pH measurements...

journal_title：Biomacromolecules

authors： Miksa D,Irish ER,Chen D,Composto RJ,Eckmann DM

更新日期：2006-02-01 00:00:00

abstract：:The calcium-binding sites of calbindin D(9k) have a helix-loop-helix motif. In this study, the helix motifs were replaced by several Ala-Gly repeating regions designed on the basis of the primary sequences of several silk fibroins. The synthesized peptides were treated with several organic solvents to modify the secon...

journal_title：Biomacromolecules

authors： Asakura T,Hamada M,Nakazawa Y,Ha SW,Knight DP

更新日期：2006-02-01 00:00:00

abstract：:Shear flow is indirectly implicated in amyloid formation in vitro. Despite the association between amyloid fibrils and disease, and the prevalence of flow in physiological systems, the effect of this parameter is uncharacterized. We designed a novel Couette cell to quantitatively investigate shear exposure during fibr...

journal_title：Biomacromolecules

authors： Hill EK,Krebs B,Goodall DG,Howlett GJ,Dunstan DE

更新日期：2006-01-01 00:00:00

abstract：:Structures of three pectic arabinogalactans, one from Vernonia kotschyana (Vk2a) and two from Cochlospermum tinctorium (Ct50A1 and Ct50A2), and their complement fixation and induction of B cell proliferation in vitro were compared. The polysaccharide Vk2a expressed potent biological activity in both assays compared wi...

journal_title：Biomacromolecules

authors： Nergard CS,Kiyohara H,Reynolds JC,Thomas-Oates JE,Matsumoto T,Yamada H,Patel T,Petersen D,Michaelsen TE,Diallo D,Paulsen BS

更新日期：2006-01-01 00:00:00

abstract：:Many dental restorative dental composites still utilize 2,2-bis[4-(2-hydroxy-3-methacryloyloxy propoxy) phenyl] propane (Bis-GMA) as base resin. The high viscosity of Bis-GMA necessitates dilution with dimethacrylate ethers of low viscosity such as triethylene glycol dimethacrylate (TEGDMA). However, increased amounts...

journal_title：Biomacromolecules

authors： Kim JW,Kim LU,Kim CK,Cho BH,Kim OY

更新日期：2006-01-01 00:00:00

abstract：:Well-defined linear poly(acryloyl glucosamine) (PAGA) exhibiting molar masses ranging from 3 to 120 K and low polydispersities have been prepared via reversible addition-fragmentation chain transfer polymerization (RAFT) in aqueous solution without recourse to protecting group chemistry. The livingness of the process ...

journal_title：Biomacromolecules

authors： Bernard J,Hao X,Davis TP,Barner-Kowollik C,Stenzel MH

更新日期：2006-01-01 00:00:00

abstract：:Photo-crosslinkable dendritic macromolecules are attractive materials for the preparation of cartilage tissue engineering scaffolds that may be optimized for in situ formation of hydrated, mechanically stable, and well-integrated hydrogel scaffolds supporting chondrocytes and chondrogenesis. We designed and synthesize...

journal_title：Biomacromolecules

authors： Söntjens SH,Nettles DL,Carnahan MA,Setton LA,Grinstaff MW

更新日期：2006-01-01 00:00:00

abstract：:Surface pressure isotherms and structural and surface dilatational properties of three hydroxypropylmethycelluloses (HPMCs, called E4M, E50LV, and F4M) adsorbed films at the air-water interface were determined. In this work we present evidence that HPMC molecules are able to diffuse and saturate the air-water interfac...

journal_title：Biomacromolecules

authors： Pérez OE,Sánchez CC,Rodríguez Patino JM,Pilosof AM

更新日期：2006-01-01 00:00:00

abstract：:A novel pH and temperature sensitive block copolymer was prepared by adding pH sensitive moiety to temperature sensitive block copolymer. This block copolymer solution showed a reversible sol-gel transition by a small pH change in the range of pH 7.4-8.0 and also by the temperature change in the region of body tempera...

journal_title：Biomacromolecules

authors： Shim WS,Yoo JS,Bae YH,Lee DS

更新日期：2005-11-01 00:00:00

abstract：:F-actins are semi-flexible polyelectrolytes and can be assembled into a large polymer-actin complex with polymorphism through electrostatic interaction with polycations. This study investigates the structural phase behavior and the growth of polymer-actin complexes in terms of its longitudinal and lateral sizes in var...

journal_title：Biomacromolecules

authors： Kwon HJ,Kakugo A,Shikinaka K,Osada Y,Gong JP

更新日期：2005-11-01 00:00:00

abstract：:Mixed protein-based hydrogels have been prepared by blending gelatin (G) with amorphous Bombyx mori silk fibroin (SF) and promoting beta-crystallization of SF via subsequent exposure to methanol or methanol/water solutions. The introduction of beta crystals in SF serves to stabilize the hydrogel network and extend the...

journal_title：Biomacromolecules

authors： Gil ES,Frankowski DJ,Spontak RJ,Hudson SM

更新日期：2005-11-01 00:00:00

abstract：:Major ampullate silk, also known as dragline silk, is one of the strongest biomaterials known. This silk is composed of two proteins, major ampullate spidroin 1 (MaSp1) and major ampullate spidroin 2 (MaSp2). Only partial cDNA sequences have been obtained for these proteins, and these sequences are toward the C-termin...

journal_title：Biomacromolecules

authors： Motriuk-Smith D,Smith A,Hayashi CY,Lewis RV

更新日期：2005-11-01 00:00:00

abstract：:New aspects concerning the mechanism of formation of chitosan physical hydrogels without any cross-linking agent were studied. The gelation took place during the evaporation of a hydroalcoholic solution of chitosan. We first demonstrated that it was possible to form a physical hydrogel from a hydrochloride form of chi...

journal_title：Biomacromolecules

authors： Boucard N,Viton C,Domard A

更新日期：2005-11-01 00:00:00

abstract：:N-(3-Aminopropyl)pyrrole was covalently coupled with alginate in an aqueous-phase reaction by means of carbodiimide-mediated activation chemistry to provide a pyrrole-alginate conjugate for subsequent use in biosensor applications. The pyrrole-alginate conjugate was quantified by UV spectroscopy at 230 nm, by an HPSEC...

journal_title：Biomacromolecules

authors： Abu-Rabeah K,Polyak B,Ionescu RE,Cosnier S,Marks RS

更新日期：2005-11-01 00:00:00

abstract：:New applications in regenerative biotechnology require the ability to understand and control protein-surface interactions on micrometer and submicrometer length scales. Evidence presented here shows that micropatterned amphiphilic comb polymer films exhibit a pretreatment-dependent behavior with respect to protein ads...

journal_title：Biomacromolecules

authors： Zhang Z,Ma H,Hausner DB,Chilkoti A,Beebe TP Jr

更新日期：2005-11-01 00:00:00

abstract：:Lignin-carbohydrate complexes (LCCs) were prepared in quantitative yield from spruce wood and from the corresponding kraft and oxygen-delignified pulps and were separated into different fractions on the basis of their carbohydrate composition. To obtain an understanding of the differences in lignin structure and react...

journal_title：Biomacromolecules

authors： Lawoko M,Henriksson G,Gellerstedt G

更新日期：2005-11-01 00:00:00

abstract：:This work reports on the effect of CO2 at subcritical conditions and the gaseous state on the telechelic poly(epsilon-caprolactone) polymers. The tested polymers are semi-crystalline in nature and thus the effect of functional groups and their overall contribution to foaming and formation of microstructures with open-...

journal_title：Biomacromolecules

authors： Nawaby AV,Farah AA,Liao X,Pietro WJ,Day M

更新日期：2005-09-01 00:00:00

abstract：:A novel strategy for artificial regulation system of gene expression applying the specific molecular recognition between carbohydrate and lectin is proposed. Plasmid-lactose conjugates (pActin-lactose and pGFP-lactose) prepared via diazocoupling maintained the transcription activity with T7 RNA polymerase. Gel-shift a...

journal_title：Biomacromolecules

authors： Matsuura K,Hayashi K,Kobayashi K

更新日期：2005-09-01 00:00:00

abstract：:On-line size-exclusion chromatography monitoring of potato phosphorylase catalyzed amylose synthesis--starting from alpha-D-glucose-1-P and maltohexaose--revealed rather monodisperse amylose populations. In the presence of lipids, amylose-lipid complexes spontaneously formed and precipitated. They were recovered by ce...

journal_title：Biomacromolecules

authors： Gelders GG,Goesaert H,Delcour JA

更新日期：2005-09-01 00:00:00

abstract：:Polymeric prodrugs of mPEG-PLA-haloperidol (methoxypoly(ethylene glycol)-b-poly(lactic acid)) can self-assemble into nanoscale micelle-like structures in aqueous solutions. mPEG-PLA-haloperidol was prepared and characterized using 1H and 13C NMR. The conjugation efficiency was found to be 64.8 +/- 21%. Micelles that f...

journal_title：Biomacromolecules

authors： Hans M,Shimoni K,Danino D,Siegel SJ,Lowman A

更新日期：2005-09-01 00:00:00

abstract：:Oligosaccharides of hydroxypropylmethyl cellulose, hydroxypropyl cellulose, and methyl cellulose were investigated by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). The cellulose ether oligosaccharides were produced either by enzymatic depolymerization utilizing the purified family 5 endoglu...

journal_title：Biomacromolecules

authors： Momcilovic D,Schagerlöf H,Wittgren B,Wahlund KG,Brinkmalm G

更新日期：2005-09-01 00:00:00

abstract：:A series of poly(vinyl alcohol) amphiphilic derivatives have been prepared to obtain polymeric aggregates in aqueous phase holding thermodynamic instability. The aim was to evaluate their ability to interact with tumor cells eliciting selective cytotoxicity. The poly(vinyl alcohol) derivatives were prepared by partial...

journal_title：Biomacromolecules

authors： Orienti I,Zuccari G,Carosio R,Montaldo PG

更新日期：2005-09-01 00:00:00

abstract：:Deproteinized natural rubber latex (DPNR-latex) was treated with lipase and phosphatase in order to analyze the structure of the chain-end group (alpha-terminal). The enzymatic treatment decreased the content of long-chain fatty acid ester groups in DPNR from about 6 to 2 mol per rubber molecule. The molecular weight ...

journal_title：Biomacromolecules

authors： Tarachiwin L,Sakdapipanich J,Ute K,Kitayama T,Bamba T,Fukusaki E,Kobayashi A,Tanaka Y

更新日期：2005-07-01 00:00:00

abstract：:Binding interactions between low molecular weight heparin (LMWH) and heparin-binding peptides (HBP) have been applied as a strategy for the assembly of hydrogels that are capable of sequestering growth factors and delivering them in a controlled manner. In this work, the assembly of four-arm star poly(ethylene glycol)...

journal_title：Biomacromolecules

authors： Yamaguchi N,Chae BS,Zhang L,Kiick KL,Furst EM

更新日期：2005-07-01 00:00:00

abstract：:Electrospinning is a simple and versatile technique of producing polymeric fibers ranging from submicron to micron in diameter. Incorporation of bioactive agents into the fibers could make a biofunctional tissue engineering scaffold. In this study, we investigated the feasibility of encapsulating human beta-nerve grow...

journal_title：Biomacromolecules

authors： Chew SY,Wen J,Yim EK,Leong KW

更新日期：2005-07-01 00:00:00

abstract：:Functionally designed elastomeric nanofiber fabrics made of the equimolar copolyester, poly(L-lactide-co-epsilon-caprolactone) (PLCL), with type I collagen or the tri-n-butylamine salt of heparin (heparin-TBA) were co-electrospun using 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as a solvent. The co-electrospun fabrics (...

journal_title：Biomacromolecules

authors： Kwon IK,Matsuda T

更新日期：2005-07-01 00:00:00