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      Piezoelectric materials for tissue regeneration: A review.

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          Abstract

          The discovery of piezoelectricity, endogenous electric fields and transmembrane potentials in biological tissues raised the question whether or not electric fields play an important role in cell function. It has kindled research and the development of technologies in emulating biological electricity for tissue regeneration. Promising effects of electrical stimulation on cell growth and differentiation and tissue growth has led to interest in using piezoelectric scaffolds for tissue repair. Piezoelectric materials can generate electrical activity when deformed. Hence, an external source to apply electrical stimulation or implantation of electrodes is not needed. Various piezoelectric materials have been employed for different tissue repair applications, particularly in bone repair, where charges induced by mechanical stress can enhance bone formation; and in neural tissue engineering, in which electric pulses can stimulate neurite directional outgrowth to fill gaps in nervous tissue injuries. In this review, a summary of piezoelectricity in different biological tissues, mechanisms through which electrical stimulation may affect cellular response, and recent advances in the fabrication and application of piezoelectric scaffolds will be discussed.

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          Author and article information

          Journal
          Acta Biomater
          Acta biomaterialia
          Elsevier BV
          1878-7568
          1742-7061
          Sep 2015
          : 24
          Affiliations
          [1 ] Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102-1982, USA.
          [2 ] Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ 07102-1982, USA. Electronic address: arinzeh@njit.edu.
          Article
          S1742-7061(15)30016-7
          10.1016/j.actbio.2015.07.010
          26162587
          84cfaf1a-7046-43ad-add9-4cea65568bcc
          History

          Electrical stimulation,Piezoelectric,Scaffolds,Tissue engineering,Tissue regeneration

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