Abstract：
:Collagen, collagen/hyaluronic acid (HA) and collagen/HA/chitosan (CS) sponges loaded with epigallocatechin gallate (EGCG), catechin (CAT) and gallic acid (GA) were developed and evaluated as active chronic wound dressings. Their physico-mechanical properties, biostability, biocompatibility and ability to inhibit in vitro myeloperoxidase (MPO) and collagenase--major enzymes related with the persistent inflammation in chronic wounds--were investigated as a function of the biopolymer composition and the polyphenolic compound used. The results demonstrated that the molecular weight of HA influences significantly the bulk properties of the obtained materials: higher elastic modulus, swelling ability and biostability against collagenase were measured when HA with higher molecular weights (830 and 2000 kDa) were added to the collagen matrices. The addition of CS and the polyphenols increased further the biostability of the sponges. Preliminary in vitro tests with fibroblasts revealed that the cells were able to adhere to all sponges. Cell viability was not affected significantly by the addition of the polyphenols; however, the presence of CS or high molecular weight HA in the sponge composition was associated with lower cellular viability. Finally, all specimens containing polyphenols efficiently inhibited the MPO activity. The highest inhibition capacity was observed for EGCG (IC₅₀=15±1μM) and it was coupled to the highest extent of binding to the biopolymers (>80%) and optimal release profile from the sponges that allowed for prolonged (up to 3-5 days) effects.
journal_name
Acta Biomaterjournal_title
Acta biomaterialiaauthors
Francesko A,Soares da Costa D,Reis RL,Pashkuleva I,Tzanov Tdoi
10.1016/j.actbio.2012.10.014subject
Has Abstractpub_date
2013-02-01 00:00:00pages
5216-25issue
2eissn
1742-7061issn
1878-7568pii
S1742-7061(12)00491-6journal_volume
9pub_type
杂志文章abstract：:Electrical stimulation of the muscle has been proven efficacious in preventing atrophy and/or reanimating paralyzed muscles. Intramuscular electrodes made from metals have significantly higher Young's Moduli than the muscle tissues, which has the potential to cause chronic inflammation and decrease device performance....
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2019.12.021
更新日期：2020-02-01 00:00:00
abstract：:Synthesis of tissue adhesives had been carried out in various laboratories in the past decades but the development is currently stalled. One of the key reasons, it is believed, is that researchers have not fully understood and resolved the role of the functional groups that are responsible for good adhesion to biologi...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2008.08.001
更新日期：2009-01-01 00:00:00
abstract：:The synthesis of microspheres for tissue regeneration requires good control over the particle size and size distribution. This is particularly important when considering the immune response that may be triggered by the presence of particles in tissue. This report outlines the design of an injectable microsphere system...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2019.03.014
更新日期：2019-04-15 00:00:00
abstract：:Despite the rapid progress which has been made in hepatocellular carcinoma (HCC) chemotherapeutics, recurrence of liver cancer still remains a barrier to achieve satisfying prognosis. Herein, we aimed to decipher the role of berberine (BER) in chemotherapy-exacerbated HCC repopulation via developing a nanocarrier co-d...
journal_title：Acta biomaterialia
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doi：10.1016/j.actbio.2019.09.034
更新日期：2019-12-01 00:00:00
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journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2011.10.034
更新日期：2012-03-01 00:00:00
abstract：:The antimicrobial properties of silver and copper nanoparticles were investigated using Escherichia coli (four strains), Bacillus subtilis and Staphylococcus aureus (three strains). The average sizes of the silver and copper nanoparticles were 3 nm and 9 nm, respectively, as determined through transmission electron mi...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2007.11.006
更新日期：2008-05-01 00:00:00
abstract：:Blood-contacting medical devices are an integral part of modern medicine. Such devices may be used for only a few hours or may be implanted for life. Despite advances in biomaterial science, clotting on medical devices remains a common problem. Systemic administration of antiplatelet drugs or anticoagulants is often n...
journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2019.06.021
更新日期：2019-08-01 00:00:00
abstract：:Calcium phosphate based bioceramics have been widely used for orthopedic applications due to their chemical similarity to natural bone. The Ca/P stoichiometry of calcium phosphates strongly influences their performance under biological conditions, which have not yet been fully elucidated to date. For this reason, the ...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2008.02.025
更新日期：2008-09-01 00:00:00
abstract：:The lifetime and stability of insulation are critical features for the reliable operation of an implantable neural interface device. A critical factor for an implanted insulation's performance is its barrier properties that limit access of biological fluids to the underlying device or metal electrode. Parylene C is a ...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2013.10.031
更新日期：2014-02-01 00:00:00
abstract：:The development of an in situ formed pH-responsive theranostic nanocomposite for anticancer drug delivery and computed tomography (CT) imaging was reported. β-cyclodextrin-{poly(lactide)-poly(2-(dimethylamino) ethyl methacrylate)-poly[oligo(2-ethyl-2-oxazoline)methacrylate]}21 [β-CD-(PLA-PDMAEMA-PEtOxMA)21] unimolecul...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2017.06.003
更新日期：2017-08-01 00:00:00
abstract：:Recent advances in biomaterials integrate metal nanoparticles with hydrogels to generate composite materials that exhibit new or improved properties. By precisely controlling the composition, arrangement and interactions of their constituents, these hybrid materials facilitate biomedical applications through myriad ap...
journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2020.12.030
更新日期：2020-12-19 00:00:00
abstract：:A series of six unique Ca-based bulk metallic glasses were synthesized and characterized. The glasses were designed to consist solely of the biocompatible elements Ca, Mg and Zn, with the view to their potential use as bioresorbable metals for orthopaedic applications. The alloys had a critical casting thickness of up...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2012.03.009
更新日期：2012-07-01 00:00:00
abstract：UNLABELLED:Epithelial cellular heterogeneity has been observed in pathological tissues with abnormal matrix stiffness and cells cultured on rigid substrates. However, it remains unclear how matrix stiffness influences cellular heterogeneity formation in multi-cellular population. Here, we demonstrated that cellular het...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.05.025
更新日期：2016-09-01 00:00:00
abstract：:To improve the corrosion resistance and biological performance of commercially pure titanium (cp-Ti) substrates, potassium hydroxide was employed to modify the surfaces of titanium substrates, followed by biomimetic deposition of apatite on the substrates in a simulated body fluid. The morphologies of native and treat...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.11.034
更新日期：2010-06-01 00:00:00
abstract：:The functional requirements of regenerated calcified tissues are that they enable the tissues to bear a variety of imposed stress and consequent contact-induced strain without substantial fracture. Here we demonstrate the effects of glucocorticoid hormones such as dexamethasone and hydrocortisone on the nanomechanical...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2014.10.038
更新日期：2015-01-01 00:00:00
abstract：:Recapitulation of endochondral ossification leads to a new concept of bone tissue engineering via a cartilage intermediate as an osteoinductive template. In this study, we aimed to investigate the influence of in vitro chondrogenic priming time for the creation of cartilage template on the in vivo endochondral bone fo...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2014.11.029
更新日期：2015-02-01 00:00:00
abstract：:Poly(ether ether ketone) (PEEK) and its composites are recognized as alternative bearing materials for use in arthroplasty because of their mechanical properties. The objective of this project was to evaluate the biological response of two different kinds of carbon fiber-reinforced (CFR) PEEK compared with ultra-high ...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.06.002
更新日期：2010-11-01 00:00:00
abstract：UNLABELLED:To improve the ocular bioavailability of the model drug of pirenoxine sodium (PRN), organic-inorganic hybrid nanocomposites including layered double hydroxides (LDH) and chitosan derivatives (chitosan-glutathione (CG), chitosan-glutathione-valine (CG-V) and chitosan-glutathione-valine-valine (CG-VV)) were de...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2016.02.041
更新日期：2016-05-01 00:00:00
abstract：:Diopside (CaMgSi(2)O(6)) powders and dense ceramics have been shown to be bioactive biomaterials for bone repair. The aim of this study is to prepare bioactive diopside scaffolds and examine their physicochemical and biological properties. X-ray diffraction, scanning electron microscopy (SEM), micro-computerized tomog...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.12.022
更新日期：2010-06-01 00:00:00
abstract：:Wound infections are a significant clinical problem affecting millions of people worldwide. Topically applied antibacterial formulations with longer residence time and controlled antimicrobial release would offer significant benefits for improved prevention and treatment of infected wounds. In this study, we developed...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2019.12.014
更新日期：2020-02-01 00:00:00
abstract：:Multiple myeloma is a malignant disease characterized by accumulation of clonal plasma cells in the bone marrow. Uncoupling of bone formation and resorption by myeloma cells leads to osteolytic lesions. These are prone to fracture and represent a possible survival space for myeloma cells under treatment causing diseas...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2019.07.018
更新日期：2019-09-15 00:00:00
abstract：:Thin film nitinol has unique mechanical properties (e.g., superelasticity), excellent biocompatibility, and ultra-smooth surface, as well as shape memory behavior. All these features along with its low-profile physical dimension (i.e., a few micrometers thick) make this material an ideal candidate in developing low-pr...
journal_title：Acta biomaterialia
pub_type： 杂志文章,评审
doi：10.1016/j.actbio.2015.03.025
更新日期：2015-07-01 00:00:00
abstract：:The goal of this study was to evaluate three-dimensional (3-D) poly(ethylene glycol) (PEG) hydrogels as a culture system for studying corneal keratocytes. Bovine keratocytes were subcultured in DMEM/F-12 containing 10% fetal bovine serum (FBS) through passage 5. Primary keratocytes (P0) and corneal fibroblasts from pa...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2008.05.007
更新日期：2008-09-01 00:00:00
abstract：:Biomineralization is a dehydration process in which water from the intrafibrillar compartments of collagen fibrils are progressively replaced by apatites. As water is an important element that induces a lack of durability of resin-dentin bonds, this study has examined the use of a biomimetic remineralization strategy ...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.03.021
更新日期：2010-09-01 00:00:00
abstract：:Surgical sutures represent the gold standard for wound closure, however, their main purpose is still limited to a mechanical function rather than playing a bioactive role. Since oxygen and pro-regenerative growth factors have been broadly described as key players for the healing process, in this study we evaluated the...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2018.09.060
更新日期：2018-11-01 00:00:00
abstract：:We present a systematic study for investigating the role of exposed hydroxyapatite (HA) nanoparticles in influencing surface characteristics and mouse pre-osteoblastic MC3T3-E1 cell behavior using nanocomposites prepared by photo-crosslinking poly(ε-caprolactone) diacrylate (PCLDA) with HA. PCLDA530 and PCLDA2000 synt...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2011.01.034
更新日期：2011-05-01 00:00:00
abstract：:Calcium hydroxide (Ca(OH)(2)) has been broadly used in endodontics, including apexification to obtain apical closure by mineralization. However, the detailed mechanism of mineralization induced by Ca(OH)(2) is still unclear. This study focuses on the function of calcium and hydroxyl ions which dissociate from Ca(OH)(2...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2009.08.005
更新日期：2010-02-01 00:00:00
abstract：:In this paper, we report X-ray diffraction investigations as well as Raman and solid-state (31)P and (23)Na magic angle spinning nuclear magnetic resonance (NMR) characterization of three series of calcium orthophosphates. The general formulae of the studied compounds are Ca(10.5-x/2)M(x)(PO(4))(7), where M=K or Na an...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2010.12.016
更新日期：2011-04-01 00:00:00
abstract：:Extracellular matrix (ECM) is crucial to many aspects of vascular morphogenesis and maintenance of vasculature function. Currently the recapitulation of angiogenic ECM microenvironment is still challenging, due mainly to its diverse components and complex organization. Here we investigate the angiogenic potential of h...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2017.03.035
更新日期：2017-05-01 00:00:00
abstract：:Chemokines are guiding cues for directional trafficking of mesenchymal stem cells (MSC) upon injury and local chemokine delivery at injury sites is an up-to-date strategy to potentiate and prolong recruitment of MSC. In this study we present the chemokine CCL25, also referred to as thymus-expressed chemokine, to mobil...
journal_title：Acta biomaterialia
pub_type： 杂志文章
doi：10.1016/j.actbio.2018.01.036
更新日期：2018-03-15 00:00:00
