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Platelet-rich plasma-loaded chitosan scaffolds: preparation and growth factor release kinetics. 2013

Burak Kutlu, and Rahime Seda Tiğlı Aydın, and Abdullah C Akman, and Menemşe Gümüşderelioglu, and Rahime M Nohutcu
Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

The aim of this study is to compare the effects of different platelet-rich plasma (PRP) preparation methods on platelet activity and to investigate the growth factor (GF) release kinetics from PRP-loaded chitosan scaffolds for tissue engineering applications. Flow cytometry analysis showed that centrifugation processes used for PRP preparation did not cause significant effect on platelet activation levels by means of markers investigated. Two different methods were used to prepare PRP-loaded chitosan scaffolds: (i) PRP was added to chitosan gel before freeze-drying to prepare scaffolds called as "GEL" and (ii) PRP was embedded to freeze-dried chitosan scaffolds to prepare scaffolds called as "SPONGE." In addition, nonactivated PRP and PRP activated with type-I collagen were used as control groups. Scanning electron microscopy images demonstrated that, in GEL group, there is no deterioration on the scaffolds porous, 3D, and interconnected structure. GF release kinetics was determined by enzyme-linked immunosorbent assay for platelet-derived GF-BB, transforming GF-β1, and insulin-like GF-1. A sustained release of GFs was achieved in GEL group while a sharp burst release was observed for all the GFs from the SPONGE groups. Moreover, platelet-derived GF-BB, insulin-like GF-1, and transforming GF-β1 releases were prolonged to 20 days in GEL groups, and the biological activities of all GFs released from GEL and SPONGE scaffolds were preserved. This study demonstrated that chitosan scaffold that was called GEL could be an appropriate carrier for PRP applications by providing sustained release of GFs.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008855 Microscopy, Electron, Scanning Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY. Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D005434 Flow Cytometry Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake. Cytofluorometry, Flow,Cytometry, Flow,Flow Microfluorimetry,Fluorescence-Activated Cell Sorting,Microfluorometry, Flow,Cell Sorting, Fluorescence-Activated,Cell Sortings, Fluorescence-Activated,Cytofluorometries, Flow,Cytometries, Flow,Flow Cytofluorometries,Flow Cytofluorometry,Flow Cytometries,Flow Microfluorometries,Flow Microfluorometry,Fluorescence Activated Cell Sorting,Fluorescence-Activated Cell Sortings,Microfluorimetry, Flow,Microfluorometries, Flow,Sorting, Fluorescence-Activated Cell,Sortings, Fluorescence-Activated Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D048271 Chitosan Deacetylated CHITIN, a linear polysaccharide of deacetylated beta-1,4-D-glucosamine. It is used in HYDROGEL and to treat WOUNDS. Poliglusam
D053657 Platelet-Rich Plasma A preparation consisting of PLATELETS concentrated in a limited volume of PLASMA. This is used in various surgical tissue regeneration procedures where the GROWTH FACTORS in the platelets enhance wound healing and regeneration. Plasma, Platelet-Rich,Platelet Rich Plasma
D054457 Tissue Scaffolds Cell growth support structures composed of BIOCOMPATIBLE MATERIALS. They are specially designed solid support matrices for cell attachment in TISSUE ENGINEERING and GUIDED TISSUE REGENERATION uses. Tissue Scaffolding,Scaffold, Tissue,Scaffolding, Tissue,Scaffoldings, Tissue,Scaffolds, Tissue,Tissue Scaffold,Tissue Scaffoldings
D036341 Intercellular Signaling Peptides and Proteins Regulatory proteins and peptides that are signaling molecules involved in the process of PARACRINE COMMUNICATION. They are generally considered factors that are expressed by one cell and are responded to by receptors on another nearby cell. They are distinguished from HORMONES in that their actions are local rather than distal. Growth Factor,Growth Factors,Paracrine Peptide Factors,Paracrine Protein Factors,Factor, Growth,Factors, Growth,Peptide Factors, Paracrine

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