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Plasma polymerization‐modified bacterial polyhydroxybutyrate nanofibrillar scaffolds

Identifieur interne : 000205 ( Main/Exploration ); précédent : 000204; suivant : 000206

Plasma polymerization‐modified bacterial polyhydroxybutyrate nanofibrillar scaffolds

Auteurs : Zeynep Karahalilo Lu [Turquie] ; Murat Demirbilek [Turquie] ; Mesut Am [Turquie] ; Melike Erol-Demirbilek [Turquie] ; Necdet Sa Lam [Turquie] ; Emir Baki Denkba [Turquie]

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Mots-clés :

Abstract

The design and the development of novel scaffold materials for tissue engineering have attracted much interest in recent years. Especially, the prepared nanofibrillar scaffold materials from biocompatible and biodegradable polymers by electrospinning are promising materials to be used in biomedical applications. In this study, we propose to produce low‐cost and cell‐friendly bacterial electrospun PHB polymeric scaffolds by using Alcaligenes eutrophus DSM 545 strain to PHB production. The produced PHB was characterized by Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared Spectroscopy (FTIR). Nanofibrous scaffolds were fabricated via electrospinning method that has a fiber diameter approximately 700–800 nm. To investigate cell attachment, cell growth, and antioxidant enzyme activity on positively and negatively charged PHB scaffold, PHB surface was modified by plasma polymerization technique using polyethylene glycol (PEG) and ethylenediamine (EDA). According to the results of superoxide dismutase (SOD) activity study, PEG‐modified nanofibrillar scaffolds indicated more cellular resistance against oxidative stress compared to the EDA modification. As can be seen in cell proliferation results, EDA modification enhanced the cell proliferation more than PEG modification, while PEG modification is better as compared with nonmodified scaffolds. In general, through plasma polymerization technique, surface modified nanofibrillar structures are effective substrates for cell attachment and outgrowth. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013


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DOI: 10.1002/app.38370


Affiliations:


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