Abstract:
:Phosphate-based glass fibers (PGFs), due to characteristics such as biodegradability and directionality, could be effective as spatial cues for axonal outgrowth following nerve injury. In the present study, PGF-containing cylindrical scaffolds of 1.8mm diameter and 3mm length were developed and implanted into the gap between the proximal and distal stumps following complete transection of rat spinal cords at T9. The PGF-free collagen scaffolds were implanted into the transected spinal cords of the control group. The open-field Basso, Beattie and Bresnahan locomotor scale revealed that the locomotor function of the experimental group was better than in the control group from 8 to 12 weeks after implantation, and urodynamic analysis revealed additional improvements in the experimental group in some parameters. Twelve weeks after implantation, some axon growth from the proximal and distal stumps to the scaffold was observed in the experimental group but not in the control group. Macrophages surrounded the injured thoracic spinal cord at 1 and 4 weeks after implantation; however, 6h after implantation, the pro-inflammatory cytokines did not differ between the control and experimental groups. Anterograde corticospinal tract (CST) tracing with biotinylated dextran amine showed that, in the experimental group, some CST outgrowths could reach the lumbar enlargement. By 12 weeks, the mRNA levels of brain-derived neurotrophic factor in the bladder had increased more in the experimental group than in the controls. We conclude that PGFs can have a beneficial effect on functional recovery following complete transection of the thoracic spinal cord in rats.
journal_name
Acta Biomaterjournal_title
Acta biomaterialiaauthors
Joo NY,Knowles JC,Lee GS,Kim JW,Kim HW,Son YJ,Hyun JKdoi
10.1016/j.actbio.2012.01.026subject
Has Abstractpub_date
2012-05-01 00:00:00pages
1802-12issue
5eissn
1742-7061issn
1878-7568pii
S1742-7061(12)00040-2journal_volume
8pub_type
杂志文章abstract:UNLABELLED:Despite advances in polymeric nanoparticles (NPs) as effective delivery systems for anticancer drugs, rapid clearance from blood and poor penetration capacity in heterogeneous tumors still remain to be addressed. Here, a dual coating of poly (ethylene glycol)-poly (d,l-lactic acid) (PEG-PDLLA) and water-solu...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2015.10.017
更新日期:2016-01-01 00:00:00
abstract::Chronically implanted neural multi-electrode arrays (MEA) are an essential technology for recording electrical signals from neurons and/or modulating neural activity through stimulation. However, current MEAs, regardless of the type, elicit an inflammatory response that ultimately leads to device failure. Traditionall...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2017.02.010
更新日期:2017-04-15 00:00:00
abstract::Biomaterial-associated infection is one of the most common complications related to the implantation of any biomedical device. Several in vivo imaging platforms have emerged as powerful diagnostic tools to longitudinally monitor biomaterial-associated infections in small animal models. In this study, we directly compa...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2014.03.005
更新日期:2014-07-01 00:00:00
abstract::Human pluripotent stem cell derived neural progenitor cells (hNPCs) have the unique properties of long-term in vitro expansion as well as differentiation into the various neurons and supporting cell types of the central nervous system (CNS). Because of these characteristics, hNPCs have tremendous potential in the mode...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2018.05.008
更新日期:2018-07-01 00:00:00
abstract::Titanium (Ti) has been widely used as an implant material due to the excellent biocompatibility and corrosion resistance of its oxide surface. Biomaterials must be sterile before implantation, but the effects of sterilization on their surface properties have been less well studied. The effects of cleaning and steriliz...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2011.11.026
更新日期:2012-05-01 00:00:00
abstract::Nanocrystalline calcium phosphates containing carbonate have a high similarity to bone mineral. The reactions of bone cells (primary osteoblasts and osteoclast-like cells) on these materials as well as on sintered beta-tricalcium phosphate and hydroxyapatite (HA) confirmed a good biocompatibility of the nanocrystallin...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2010.03.003
更新日期:2010-08-01 00:00:00
abstract::The pericellular matrix (PCM) is a narrow tissue region that surrounds chondrocytes in articular cartilage. Previous parametric studies of cell-matrix interactions suggest that the mechanical properties of the PCM relative to those of the extracellular matrix (ECM) can significantly affect the micromechanical environm...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2005.02.001
更新日期:2005-05-01 00:00:00
abstract::Breast implant use has tripled in the last decade with over 320,000 breast implant based reconstructions and augmentations performed in the US per annum. Unfortunately a considerable number of women will experience capsular contracture, the irrepressible and disfiguring, tightening and hardening of the fibrous capsule...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2016.11.052
更新日期:2017-02-01 00:00:00
abstract::Tissue growth in bioscaffolds is influenced significantly by pore geometry, but how this geometric dependence emerges from dynamic cellular processes such as cell proliferation and cell migration remains poorly understood. Here we investigate the influence of pore size on the time required to bridge pores in thin 3D-p...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.07.010
更新日期:2020-09-15 00:00:00
abstract:UNLABELLED:Cellular microenvironments present cells with multiple stimuli, including not only soluble biochemical and insoluble matrix cues but also mechanical factors. Biomaterial array platforms have been used to combinatorially and efficiently probe and define two-dimensional (2D) and 3D microenvironmental cues to g...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2015.11.054
更新日期:2016-04-01 00:00:00
abstract::The uptake and trafficking of NPs is impacted by several attributes such as size, shape, surface charge and importantly by surface ligands that can interact with the cell plasma membrane. We envision that NPs which can be readily modified in aqueous environments will be key to engineering patient-specific nanotherapeu...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.08.038
更新日期:2020-10-15 00:00:00
abstract::Photoreactive poly(ethylene glycol) (PEG) was prepared and the polymer was photoimmobilized on organic, inorganic and metal surfaces to reduce their interaction with proteins and cells. The photoreactive PEG was synthesized by co-polymerization of methacrylate-PEG and acryloyl 4-azidobenzene. Surface modification was ...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2007.05.010
更新日期:2007-11-01 00:00:00
abstract::Vascular damage develops with diverging severity during and after percutaneous coronary intervention with stent placement and is the prevailing stimulus for in-stent restenosis. Previous work has failed to link mechanical data obtained in a realistic in vivo or in vitro environment with data collected during imaging p...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.08.016
更新日期:2020-10-15 00:00:00
abstract::Biological organisms produce high-performance composite materials, such as bone, wood and insect cuticle, which provide inspiration for the design of novel materials. Ascidians (sea squirts) produce an organic exoskeleton, known as a tunic, which has been studied quite extensively in several species. However, currentl...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.04.038
更新日期:2020-07-15 00:00:00
abstract::Human-induced pluripotent stem cell (hiPSC)-derived hepatocytes (iHEP) offer an attractive alternative to primary human hepatocytes (PHH) for drug toxicity studies, as PHHs are limited in supply, vary in their metabolic activity between donors, and rapidly lose their functionality in vitro. However, one of the major d...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2019.07.047
更新日期:2019-09-01 00:00:00
abstract::Multicomponent formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in degree of conversion (DC), allowing the evaluation of multiple processing...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2009.01.043
更新日期:2009-07-01 00:00:00
abstract::Diabetics are prone to chronic wounds that have slower healing, and methods of accelerating the wound closure and to ensure protection from infections are critically needed. MicroRNA-146a gets dysregulated in diabetic wounds and injection of this microRNA combined with reactive oxygen species-scavenging cerium oxide n...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2019.11.014
更新日期:2020-01-01 00:00:00
abstract::Introducing nanoroughness on various biomaterials has been shown to profoundly effect cell-material interactions. Similarly, physical forces act on a diverse array of cells and tissues. Particularly in bone, the tissue experiences compressive or tensile forces resulting in fluid shear stress. The current study aimed t...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2013.02.011
更新日期:2013-05-01 00:00:00
abstract::Biodegradable PHBHHx (poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)) nanoparticles containing insulin phospholipid complex were loaded in chitosan-based thermosensitive hydrogels for long-term sustained and controlled delivery of insulin. The injectable hydrogels, prepared by adding β-glycerophosphate disodium salt (G...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2012.09.034
更新日期:2013-02-01 00:00:00
abstract::Magnesium is an attractive material for use in biodegradable implants due to its low density, non-toxicity and mechanical properties similar to those of human tissue such as bone. Its biocompatibility makes it amenable for use in a wide range of applications from bone to cardiovascular implants. Here we investigated t...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2012.07.045
更新日期:2013-02-01 00:00:00
abstract::The brown pelican (Pelecanus occidentalis) wields one of the largest bills of any bird and is distinguished by the deployable throat pouch of extensible tissue used to capture prey. Here we report on mechanical properties and microstructure of the pouch skin. It exhibits significant anisotropy, with the transverse dir...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.10.008
更新日期:2020-12-01 00:00:00
abstract::Infection is a major cause of failure of inserted or implanted biomedical devices (biomaterials). During surgery, bacteria may adhere to the implant, initiating biofilm formation. Bacteria are also observed in and recultured from the tissue surrounding implants, and may even reside inside host cells. Whether these bac...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2014.08.012
更新日期:2014-12-01 00:00:00
abstract::Semiconducting nanoparticles, more commonly known as quantum dots, possess unique size and shape dependent optoelectronic properties. In recent years, these unique properties have attracted much attention in the biomedical field to enable real-time tissue imaging (bioimaging), diagnostics, single molecule probes, and ...
journal_title:Acta biomaterialia
pub_type: 杂志文章,评审
doi:10.1016/j.actbio.2019.05.022
更新日期:2019-08-01 00:00:00
abstract:UNLABELLED:Given the wide spread clinical use of ceramic-based bone void fillers, we sought to determine the efficacy of an FDA-approved β-tricalcium phosphate bone graft substitute (JAX™) in combination with a carboxymethyl cellulose (CMC) handling agent that included a particular heparan glycosaminoglycan (GAG) varia...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2015.09.008
更新日期:2015-12-01 00:00:00
abstract:UNLABELLED:The regeneration of hyaline cartilage remains clinically challenging. Here, we evaluated the therapeutic effects of using cell-free porous poly(lactic-co-glycolic acid) (PLGA) graft implants (PGIs) along with early loading exercise to repair a full-thickness osteochondral defect. Rabbits were randomly alloca...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2015.09.026
更新日期:2015-12-01 00:00:00
abstract::Surgical meshes are effective and frequently used to reinforce soft tissues. Fibrin glue (FG) has been widely used for mesh fixation and is also considered an optimal vehicle for stem cell delivery. The aim of this preclinical study was to evaluate the therapeutic effect of MSCs and their exosomes combined with FG for...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2018.02.014
更新日期:2018-04-15 00:00:00
abstract::The active and passive mechanical behavior of a cosmetic tightening product for skin anti-aging is investigated based on a wide range of in vivo and in vitro measurements. The experimental data are used to inform a numerical model of the attained cosmetic effect, which is then implemented in a commercial finite-elemen...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2020.08.027
更新日期:2020-10-01 00:00:00
abstract::Small interfering RNA (siRNA) shows great therapeutic potential due to its ability to regulate gene expression in a highly selective manner. However, its application has been limited by ineffective cellular uptake of siRNAs. To achieve successful gene-silencing efficiency, a safe and effective delivery vector is gener...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2015.04.002
更新日期:2015-07-01 00:00:00
abstract::The development of functional therapies for corneal repair and regeneration is a pressing issue. Corneal stroma provides the principal functions of the cornea. However, because of the highly organized nature of the stromal matrix, the attempts to reproduce corneal stroma might follow a scar model. Here, we have develo...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2018.06.005
更新日期:2018-07-15 00:00:00
abstract::We have characterized the in vitro and in vivo extracellular neural recording and stimulation properties of ruthenium oxide (RuOx) based microelectrodes. Cytotoxicity and functional neurotoxicity assays were carried out to confirm the in vitro biocompatibility of RuOx. Material extract assays, in accordance to ISO pro...
journal_title:Acta biomaterialia
pub_type: 杂志文章
doi:10.1016/j.actbio.2019.10.040
更新日期:2020-01-01 00:00:00