Abstract:
:Islet transplantation is a method for the treatment of type 1 diabetes mellitus (DM) and has been widely performed around the world. The long-term cryopreservation of islets shows many advantages in the field of islet transplantation. Previous studies have described the development of sheet-type polyvinyl alcohol (PVA) macro-encapsulated islets (MEI) to treat type 1 DM without any immunotherapy. The present study examined their beneficial effects on islet cryopreservation. PVA MEI of Wistar rats were divided into three groups of 1-day, 7-day and 30-day cryopreservation at -80 degrees C. The 30-day group showed a lower recovery rate of the islet number and impaired insulin release in comparison to the 1-day group, whereas no significant differences of the in vitro results were observed between the 1-day and 7-day groups. The MEI transplantation recipient mice in the 1-day and 7-day groups reached normoglycemia for a 4-week observation period, and the recipients in 30-day group also showed a significant decrease followed by a slightly higher non-fasting blood glucose level. These results suggest that the PVA MEI are useful for islet long-term cryopreservation, and that the use of cryopreserved PVA MEI may, therefore, be a promising modality for performing DM therapy.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Qi Z,Shen Y,Yanai G,Yang K,Shirouzu Y,Hiura A,Sumi Sdoi
10.1016/j.biomaterials.2010.01.088subject
Has Abstractpub_date
2010-05-01 00:00:00pages
4026-31issue
14eissn
0142-9612issn
1878-5905pii
S0142-9612(10)00120-1journal_volume
31pub_type
杂志文章相关文献
BIOMATERIALS文献大全abstract::The bioactivity of plasma-sprayed hydroxyapatite (HA)/Ti-6Al-4V composite coatings was studied by soaking the coatings in simulated body fluid (SBF) for up to 8 weeks. This investigation was aimed at elucidating the biological behaviour of plasma-sprayed HA/Ti-6Al-4V composite coatings by analyzing the changes in chem...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(02)00573-2
更新日期:2003-04-01 00:00:00
abstract::This study investigated the in vitro effects of akermanite, a new kind of Ca-, Mg-, Si-containing bioceramic, on the attachment, proliferation and osteogenic differentiation of human adipose-derived stem cells (hASCs). Parallel comparison of the cellular behaviors of hASCs on the akermanite was made with those on beta...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.08.039
更新日期:2008-12-01 00:00:00
abstract::Although PEGylated liposome-based drug delivery systems hold great promising applications for cancer therapy due to their prolonged blood circulation time, PEGylation significantly reduces their cellular uptake, which markedly impairs the in vivo tumor retention and antitumor efficiency of drug-loaded liposomes. Most ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2014.11.010
更新日期:2015-02-01 00:00:00
abstract::Traditional therapeutic interventions against abnormal gene expression in disease states at the level of expressed proteins are becoming increasingly difficult due to poor selectivity, off-target effects and associated toxicity. Upstream catalytic targeting of specific RNA sequences offers an alternative platform for ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2016.09.033
更新日期:2017-01-01 00:00:00
abstract::In spite of good prospects for bone morphogenetic proteins (BMP) applications, an ideal carrier system for BMPs has not yet been identified. The purpose of this study was to evaluate the osteogenic effect of a fibrin-fibronectin sealing system (FFSS) combined with beta-tricalcium phosphate (beta-TCP) as a carrier syst...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2006.02.045
更新日期:2006-07-01 00:00:00
abstract::Injectable, biodegradable scaffolds are important biomaterials for tissue engineering and drug delivery. Hydrogels derived from natural polysaccharides are ideal scaffolds as they resemble the extracellular matrices of tissues comprised of various glycosaminoglycans (GAGs). Here, we report a new class of biocompatible...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.12.080
更新日期:2009-05-01 00:00:00
abstract::Photosensitizers with aggregation-induced emission (AIE) characteristics are of great interest for cancer theranostics involving both fluorescence imaging and photodynamic therapy (PDT). However, in the purpose of clinical trials of PDT, the development of prominent drug delivery systems for boosting the PDT efficienc...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2019.119749
更新日期:2020-02-01 00:00:00
abstract::Cell labeling using magnetic nanoparticles is an increasingly used approach in noninvasive behavior tracking, in vitro separation of cancer stem cells (CSCs), and CSC-based research in cancer therapy. However, the impact of magnetic labeling on the biological properties of targeted CSCs, such as self-renewal, prolifer...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.01.058
更新日期:2012-05-01 00:00:00
abstract::Bone is the most frequent metastasis site for breast cancer. As well as dramatically increasing disease burden, bone metastases are also an indicator of poor prognosis. One of the main challenges in investigating bone metastasis in breast cancer is engineering in vitro models that replicate the features of in vivo bon...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2020.120624
更新日期:2020-12-24 00:00:00
abstract::The overwhelming majority of drugs exert their pharmacological effects after reaching their target sites of action, however, these target sites are mainly located in the cytosol or intracellular organelles. Consequently, delivering drugs to the specific organelle is the key to achieve maximum therapeutic effects and m...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2015.02.001
更新日期:2015-06-01 00:00:00
abstract::Amyloid fibrils and plaques are detected in the brain tissue of patients affected by Alzheimer's disease, but have also been found as part of normal physiological processes such as bacterial adhesion. Due to their highly organized structures, amyloid proteins have also been used for the development of nanomaterials, f...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2010.11.066
更新日期:2011-05-01 00:00:00
abstract::Atherosclerosis is the leading cause of many fatal cardiovascular and cerebrovascular diseases. Whereas nanomedicines are promising for targeted therapy of atherosclerosis, great challenges remain in development of effective, safe, and translational nanotherapies for its treatment. Herein we hypothesize that non-proin...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2017.07.035
更新日期:2017-10-01 00:00:00
abstract::We genetically introduced the Fc-binding peptide (FcBP) into the loop of a self-assembled protein cage, ferritin, constituting four-fold symmetry at the surface to use it as a modular delivery nanoplatform. FcBP-presenting ferritin (FcBP-ferritin) formed very stable non-covalent complexes with both human and rabbit Ig...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.03.055
更新日期:2012-07-01 00:00:00
abstract::We have investigated the interface between bone and hydroxyapatite (HA) chronically implanted in man. By light microscopy, HA appeared to bind directly to bone without intervening fibrous tissue. By transmission electron microscopy, two patterns were noted: (1) HA either bound directly to bone; or (2) electron-dense m...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(95)91093-e
更新日期:1995-01-01 00:00:00
abstract::Bone morphogenetic proteins (BMPs) are known to induce diverse differentiation fates in human embryonic stem cells (hESCs). In the present study, we compared the potency at which BMP5, BMP10 and BMP13, which are members of distinct BMP subgroups due to differences in sequential and structural homology, induce differen...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2013.08.084
更新日期:2013-12-01 00:00:00
abstract::Inherent neuronal and circulating progenitor cells play important roles in facilitating neuronal and functional recovery post stroke. However, this endogenous repair process is rather limited, primarily due to unfavorable conditions in the infarcted brain involving reactive oxygen species (ROS)-mediated oxidative stre...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2015.12.009
更新日期:2016-03-01 00:00:00
abstract::The present study deals with the synthesis and characterization of radiopaque polymers which could, when solubilized in an appropriate water-miscible solvent, be useful embolic materials for the treatment of cerebral aneurysms and arteriovenous malformations. For this purpose cellulose (both microcrystalline and powde...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(01)00087-4
更新日期:2002-01-01 00:00:00
abstract::The authors aimed to develop a liquid material for embolization of aneurysms. In vitro and in vivo performances of the new embolic material were examined by cell culture and using an aneurysm model made in common carotid arteries (CCAs) of adult rats. Engineered protein ProNectin F (PnF), which contains 13 sites of an...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2003.10.021
更新日期:2004-08-01 00:00:00
abstract::Vascular endothelial growth factor (VEGF) has been extensively investigated to promote vascularization at damaged or diseased sites and in tissue implants. Here we are interested in determining if the manner in which VEGF is presented from a scaffold to endothelial cells influences the architecture of the blood vessel...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.06.027
更新日期:2011-10-01 00:00:00
abstract::Microfabricated devices possessing magnetic properties are of great utility in bioanalytical microdevices due to their controlled manipulation with external magnets. Current methods for creating magnetic microdevices yield a low-transparency material preventing light microscopy-based inspection of biological specimens...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2010.07.087
更新日期:2010-11-01 00:00:00
abstract::The aminohexyl derivative of the copolymer of 2-hydroxyethyl methacrylate and ethylene dimethacrylate (p(HEMA)-Hex) in the form of regular spherical particles was used as a polymeric carrier for chemically sorbed methotrexate (MTX). The effect of the washed p(HEMA)-Hex-MTX carrier on the morphological structure of don...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/0142-9612(92)90041-l
更新日期:1992-01-01 00:00:00
abstract::The aim of this study was to develop a hydrogel which would be suitable for corneal cell re-epithelialization when used as a corneal implant. To achieve this, a series of hydrogels were functionalized with primary amines by post-polymerization reactions between amine compounds and glycidyl ether groups attached to the...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2007.08.028
更新日期:2007-12-01 00:00:00
abstract::Ophthalmic drug delivery through eye drops is inefficient because of low corneal bioavailability and short residence time in tears. Contact lenses are ideally suited for extended and targeted drug delivery to cornea, but commercial contact lenses release ophthalmic drugs for only 1-2 h. This study focuses on dispersin...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.10.076
更新日期:2012-03-01 00:00:00
abstract::Neonatal rat calvarial osteoblasts were cultured in 90% porous, 75:25 poly(DL-lactic-co-glycolic acid) (PLGA) foam scaffolds for up to 56 days to examine the effects of the cell seeding density, scaffold pore size, and foam thickness on the proliferation and function of the cells in this three-dimensional environment....
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/s0142-9612(98)00021-0
更新日期:1998-08-01 00:00:00
abstract::Amphiphilic block terpolymer conetworks composed of butyl methacrylate (BMA), 2,3 propandiol-1-methacrylate (GMMA) and ethandiol dimethacrylate (EDMA) were synthesized. Telechelic oligomers with the carboxylic acid end groups were made via ozonolysis of poly(BMA-co-butadiene) and then these were reacted with glycidyl ...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2006.09.024
更新日期:2007-02-01 00:00:00
abstract::Tissue engineering combined with gene therapy represents a promising approach for bone regeneration. The Hypoxia-inducible factor-1α (HIF-1α) gene is a pivotal regulator of vascular reactivity and angiogenesis. Our recent study has showed that HIF-1α could promote osteogenesis of bone mesenchymal stem cells (BMSCs) us...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2011.09.005
更新日期:2011-12-01 00:00:00
abstract::Hydrogel materials that display inherent activity against bacteria can be used to directly treat accessible wounds to prevent or kill existing infection. Hydrogels composed of self-assembling β-hairpin peptides, having a high content of arginine, were found to be extremely effective at killing both gram-positive and g...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2012.08.046
更新日期:2012-12-01 00:00:00
abstract::A system of nanoparticles of mixed lipid monolayer shell and biodegradable polymer core was developed for targeted delivery of anticancer drugs with Docetaxel as a model drug, which provide targeting versatility with a quantitative control of the targeting effect by adjusting the lipid component ratio of the mixed lip...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2009.09.036
更新日期:2010-01-01 00:00:00
abstract::The present study has examined the efficacy of a polymer microarray platform to screen a library of polyurethanes for applications such as human skeletal progenitor cell isolation and surface modification of tissue engineering scaffolds to enhance skeletal cell growth and differentiation. Analysis of polyurethane micr...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2008.10.038
更新日期:2009-02-01 00:00:00
abstract::This paper presents for the first time a mathematical model for a mechanism of controlled drug release involving both ion exchange and transient counter diffusion of a drug and counterions. Numerical analysis was conducted to study the effect of different factors on drug release kinetics including environmental condit...
journal_title:Biomaterials
pub_type: 杂志文章
doi:10.1016/j.biomaterials.2007.11.044
更新日期:2008-04-01 00:00:00