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Biomaterials Research

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https://www.readbyqxmd.com/read/28702219/modification-and-optimization-of-electrospun-gelatin-sheets-by-electron-beam-irradiation-for-soft-tissue-engineering
#1
Jae Baek Lee, Young-Gwang Ko, Donghwan Cho, Won Ho Park, Oh Hyeong Kwon
BACKGROUND: Crosslinked gelatin nanofibers are one of the widely used scaffolds for soft tissue engineering. However, modifying the biodegradation rate of chemically crosslinked gelatin is necessary to facilitate cell migration and tissue regeneration. Here, we investigated the optimal electron beam (e-beam) irradiation doses with biodegradation behavior on changes in the molecular weight, morphology, pore structure, and cell proliferation profiles of electrospun nanofibrous gelatin sheets...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28652927/anticancer-activity-of-drug-loaded-calcium-phosphate-nanocomposites-against-human-osteosarcoma
#2
Kyoung Dan Son, Young-Jin Kim
BACKGROUND: Calcium phosphate (CaP) based nanoparticles are considered to be ideal drug carriers for delivery of anticancer drugs because of their excellent biocompatibility and pH responsiveness. However, CaP nanoparticles have the problems of limited drug load capacity, initial burst release, and short-term release. Thus, we prepared the CaP nanocomposites containing anticancer drug such as caffeic acid (CA-NP), chlorogenic acid (CG-NP), or cisplatin (CP-NP) in the presence of alginate as a polymer template to control the release rate of drugs...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28652926/silk-fibroin-hydroxyapatite-composite-hydrogel-induced-by-gamma-ray-irradiation-for-bone-tissue-engineering
#3
Min Hee Kim, Beom Su Kim, Jun Lee, Donghwan Cho, Oh Hyeong Kwon, Won Ho Park
BACKGROUND: In this study, silk fibroin (SF) composite hydrogels containing hydroxyapatite (HAP) nanoparticles (NPs) for bone tissue engineering were fabricated using gamma-ray (γ-ray) irradiation treatment. During the irradiation, the HAP dispersed SF solution was changed to the chemically crosslinked SF hydrogel. METHODS: Distribution of HAP NPs in the SF hydrogel was examined by SEM imagery and energy dispersive X-ray spectrophotometry, and the crystalline structure of SF composite hydrogels was also confirmed by X-ray diffractometry...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28620549/lamination-of-microfibrous-plga-fabric-by-electrospinning-a-layer-of-collagen-hydroxyapatite-composite-nanofibers-for-bone-tissue-engineering
#4
Gi-Wan Kwon, Kailash Chandra Gupta, Kyung-Hye Jung, Inn-Kyu Kang
BACKGROUND: To mimic the muscle inspired cells adhesion through proteins secretion, the lamination of collagen-hydroxyapatite nanorod (nHA) composite nanofibers has been carried out successfully on polydopamine (PDA)-coated microfibrous polylactide-co-glycolide (PLGA) fabrics. The lamination of collagen-hydroxyapatite composite nanofibers on polydopamine-coated microfibrous PLGA fabrics was carried through electrospinning the solution of collagen containing L-glutamic acid-grafted hydroxyapatite nanorods (nHA-GA) at a flow rate of 1...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28616254/in-vitro-ion-adsorption-and-cytocompatibility-of-dicalcium-phosphate-ceramics
#5
Martha Schamel, Jake E Barralet, Jürgen Groll, Uwe Gbureck
BACKGROUND: In vitro cell testing of degradable bioceramics such as brushite or monetite is often challenging due to the ion release into or adsorption from the culture medium. These ionic changes are then mostly responsible for cell proliferation and activity, which prohibits the investigation of effects originating from surface topography or further material modifications. METHODS: Here, we aimed to solve this problem by developing a pre-conditioning regime following the repeated immersion of brushite and monetite samples in various Ca(2+), Mg(2+) and PO4(3-) containing electrolytes, followed by studying ion adsorption / release as well as changes in phase composition and in vitro cytocompatibility with MG63 cells...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28593053/natural-graft-tissues-and-synthetic-biomaterials-for-periodontal-and-alveolar-bone-reconstructive-applications-a-review
#6
REVIEW
Zeeshan Sheikh, Nader Hamdan, Yuichi Ikeda, Marc Grynpas, Bernhard Ganss, Michael Glogauer
Periodontal disease is categorized by the destruction of periodontal tissues. Over the years, there have been several clinical techniques and material options that been investigated for periodontal defect repair/regeneration. The development of improved biomaterials for periodontal tissue engineering has significantly improved the available treatment options and their clinical results. Bone replacement graft materials, barrier membranes, various growth factors and combination of these have been used. The available bone tissue replacement materials commonly used include autografts, allografts, xenografts and alloplasts...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28529764/in-vivo-analysis-of-covering-materials-composed-of-biodegradable-polymers-enriched-with-flax-fibers
#7
Tomasz Gredes, Sandra Schönitz, Tomasz Gedrange, Lukas Stepien, Karol Kozak, Christiane Kunert-Keil
BACKGROUND: The objective of this study was to investigate the in vivo effect of bioactive composites with poly(lactic acid) (PLA) or polycaprolactone (PCL) as the matrix, reinforced with bioplastic flax fibers, on the surrounding muscle tissue. METHODS: Materials of pure PLA and PCL and their composites with flax fibers from genetically modified plants producing poly-3-hydroxybutyrate (PLA-transgen, PCL-transgen) and unmodified plants (PLA-wt, PCL-wt) were placed subcutaneous on the M...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28529763/characterisation-of-a-novel-poly-ether-ether-ketone-calcium-sulphate-composite-for-bone-augmentation
#8
Erik A B Hughes, Liam M Grover
BACKGROUND: Calcium sulphate (CS) has been used in bone grafting since the 1800s. It has not replaced autograft as the gold standard, however, since its dissolution occurs rapidly in bodily fluids, meaning that the material cannot support long-term bone growth. Here, the polymer poly (ether ether ketone) (PEEK) was used to slow dissolution in in vitro physiological environments and augment the mechanical properties of the material. METHODS: PEEK/CS specimens were fabricated by combining powders of PEEK and CS with water, resulting in a hardening paste...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28439422/anti-aging-effect-and-gene-expression-profiling-of-dung-beetle-glycosaminoglycan-in-aged-rats
#9
Mi Young Ahn, Ban Ji Kim, Ha Jeong Kim, Jae Sam Hwang, Yi-Sook Jung, Kun-Koo Park
BACKGROUND: This study aimed to evaluate the anti-aging effect of a newly prepared insect-derived compound, dung beetle glycosaminoglycan (GAG), given intraperitoneally to old SD rats as part of their diet for 1 month. Insect GAG administration was found to be related to a reduction in oxidative damage, hepato-cellular biomarker levels, protein carbonyl content, and malondialdehyde concentration. The anti-aging-related molecular genetic mechanisms of dung beetle GAG are not yet fully elucidated...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28435697/calcium-phosphates-and-silicon-exploring-methods-of-incorporation
#10
Ana I Rodrigues, Rui L Reis, Clemens A van Blitterswijk, Isabel B Leonor, Pamela Habibović
BACKGROUND: Bioinorganics have been explored as additives to ceramic bone graft substitutes with the aim to improve their performance in repair and regeneration of large bone defects. Silicon (Si), an essential trace element involved in the processes related to bone formation and remodeling, was shown not only to enhance osteoblasts proliferation but also to stimulate the differentiation of mesenchymal stem cells (MSCs) and preosteoblasts into the osteogenic lineage. In this study, the added value of Si to calcium phosphate (CaP) coatings was evaluated...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28405467/anti-apoptotic-effect-of-dexamethasone-in-an-ototoxicity-model
#11
Jin Ho Lee, Se Heang Oh, Tae Ho Kim, Yoon Young Go, Jae-Jun Song
BACKGROUND: Dexamethasone (DEX) is used for the treatment of various inner ear diseases. However, the molecular mechanism of DEX on gentamicin induced hair cell damage is not known. Therefore, this study investigated the protective effect of DEX on gentamicin (GM)-induced ototoxicity and the effect of GM on the expression of apoptosis related genes. METHODS: The protective effects of DEX were measured by phalloidin staining of explant cultures of organ of Corti from postnatal day 2-3 mice with GM-induced hair cell loss...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28396799/erratum-to-umbilical-cord-mesenchymal-stem-cells-derived-extracellular-vesicles-can-safely-ameliorate-the-progression-of-chronic-kidney-diseases
#12
Wael Nassar, Mervat El-Ansary, Dina Sabry, Mostafa A Mostafa, Tarek Fayad, Esam Kotb, Mahmoud Temraz, Abdel-Naser Saad, Wael Essa, Heba Adel
[This corrects the article DOI: 10.1186/s40824-016-0068-0.].
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28250967/osteogenesis-evaluation-of-duck-s-feet-derived-collagen-hydroxyapatite-sponges-immersed-in-dexamethasone
#13
Yeon Ji Kook, Dae Hoon Lee, Jeong Eun Song, Nirmalya Tripathy, Yoo Shin Jeon, Ha Yan Jeon, Joaquim M Oliveira, Rui L Reis, Gilson Khang
BACKGROUND: The aim of this study was to investigate the osteogenesis effects of DC and DC/HAp sponge immersed in without and with dexamethasone. METHODS: The experimental groups in this study were DC and DC/HAp sponge immersed in without dexamethasone (Dex(-)DC and Dex(-)-DC/HAp group) and with dexamethasone (Dex(+)-DC and Dex(+)-DC/HAp group). We characterized DC and DC/HAp sponge using compressive strength, scanning electron microscopy (SEM). Also, osteogenic differentiation of BMSCs on sponge (Dex(-)DC, Dex(-)-DC/HAp, Dex(+)-DC and Dex(+)-DC/HAp group) was assessed by SEM, 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazoliumbromide (MTT) assay, alkaline phosphatase (ALP) activity assay and reverse transcription-PCR (RT-PCR)...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/28097017/study-of-myoblast-differentiation-using-multi-dimensional-scaffolds-consisting-of-nano-and-micropatterns
#14
Sung Ho Cha, Hyun Jong Lee, Won-Gun Koh
BACKGROUND: The topographical cue is major influence on skeletal muscle cell culture because the structure is highly organized and consists of long parallel bundles of multinucleated myotubes that are formed by differentiation and fusion of myoblast satellite cells. In this technical report, we fabricated a multiscale scaffold using electrospinning and poly (ethylene glycol) (PEG) hydrogel micropatterns to monitor the cell behaviors on nano- and micro-alignment combined scaffolds with different combinations of angles...
2017: Biomaterials Research
https://www.readbyqxmd.com/read/27980804/direct-reprogramming-and-biomaterials-for-controlling-cell-fate
#15
REVIEW
Eunsol Kim, Giyoong Tae
Direct reprogramming which changes the fate of matured cell is a very useful technique with a great interest recently. This approach can eliminate the drawbacks of direct usage of stem cells and allow the patient specific treatment in regenerative medicine. Overexpression of diverse factors such as general reprogramming factors or lineage specific transcription factors can change the fate of already differentiated cells. On the other hand, biomaterials can provide physical and topographical cues or biochemical cues on cells, which can dictate or significantly affect the differentiation of stem cells...
2016: Biomaterials Research
https://www.readbyqxmd.com/read/27980803/erratum-to-superior-absorption-and-retention-properties-of-foam-film-silver-dressing-versus-other-commercially-available-silver-dressing
#16
Seung Moon Lee, Il Kyu Park, Yong Soo Kim, Hyun Jung Kim, Hanlim Moon, Stefan Mueller, Harsha Arumugam, Young-Il Jeong
[This corrects the article DOI: 10.1186/s40824-016-0069-z.].
2016: Biomaterials Research
https://www.readbyqxmd.com/read/27980802/erratum-to-physical-morphological-and-wound-healing-properties-of-a-polyurethane-foam-film-dressing
#17
Seung Moon Lee, Il Kyu Park, Yong Soo Kim, Hyun Jung Kim, Hanlim Moon, Stefan Mueller, Young-Il Jeong
[This corrects the article DOI: 10.1186/s40824-016-0063-5.].
2016: Biomaterials Research
https://www.readbyqxmd.com/read/27895934/liposomal-delivery-systems-for-intestinal-lymphatic-drug-transport
#18
REVIEW
Hyeji Ahn, Ji-Ho Park
Intestinal lymphatic drug delivery has been widely studied because drugs can bypass the first-pass metabolism in the liver via the lymphatic route, which increases oral bioavailability. Various lipid-based nanoparticles have been used to deliver hydrophobic drugs to the lymphatic pathway. This review focuses on the liposomal delivery systems used for intestinal lymphatic drug transport. Liposomal formulations have attracted particular attention because they can stimulate the production of chylomicrons and the incorporated drugs readily associate with enterocyte-derived chylomicrons, enhancing lymphatic drug transport...
2016: Biomaterials Research
https://www.readbyqxmd.com/read/27872752/in-vitro-toxicity-study-of-poly-alkylphenol-as-vulcanizing-agent
#19
Joon Woo Chon, Ji Yun Lee, Yoon Ju Song, Jin Hwan Kim, Dong June Chung
In this study, cytotoxicity of various novel poly(alkylpehnol) derivatives which, one of constituent for vulcanizing agent, could be adjusted in medical elastic rubber applications were investigated under various conditions of cytotoxicity test. By MTT-assay which according to ISO 10993-5 regulation, we could figure out cell viability of mouse fibroblast in various sample conditions. Furthermore, by Live & Dead Cell assay, we could get colorimetric cell viability via fluorescence images.
2016: Biomaterials Research
https://www.readbyqxmd.com/read/27826455/mg-63-cells-proliferation-following-various-types-of-mechanical-stimulation-on-cells-by-auxetic-hybrid-scaffolds
#20
Hong Jin Choi, Jun Jae Lee, Jung Bok Lee, Hak-Joon Sung, Jung-Woog Shin, Ji Won Shin, Yanru Wu, Jeong Koo Kim
BACKGROUND: Mechanical properties and cyto-compatibility of a composite scaffold which possessed negative (-) Poisson's ratio (NPR) was investigated for effective load transfer from auxetic scaffold to cell. METHODS: Organic/inorganic composite scaffolds were prepared by mixing hydroxyapatite (HA) to poly(lactide-co-glycolide) (PLGA). To induce NPR in composite scaffold, 3-directional volumetric compression was applied during the scaffold fabrication at adequate temperature(60°C)...
2016: Biomaterials Research
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