[Events] MSSI Research Forum 2010

[Emily.Barrett]

Materials  &  Surface  Science  Institute

Research  Forum  2010

 

 


PRESENTATION  BY


Dr. Eiichi Fukada

Kobayasi Institute of Physical Research

Tokyo Japan

 

TITLE  OF  PRESENTATION

 

Piezoelectricity of Bone and Electromechanical Stimulation of Bone
Growth

 


ABSTRACT


Piezoelectricity in bone was found more than 50 years ago and the effect
was ascribed to the crystalline properties of collagen fibers with
uniaxially oriented structure. Piezoelectric effects in many other
proteins and polypeptides were studied and the origin of the
stress-induced polarization was ascribed to the internal rotation of
CONH dipoles in helical protein molecules. In wet bone, the streaming
potential due to stress gradient was found to play a major role in the
stress-induced polarization. Implantation of piezoelectric polymers such
as poly-L-lactic acid into bone caused the formation of callus. A number
of apparatus to stimulate fracture healing have been invented: DC, AC
electric current, Electromagnetic Pulse and Ultrasound. Various
biochemical reactions of cells such as MC3T3 during electromechanical
stimulations were studied, which suggested some characteristic time
scales. A hypothesis was presented that the ion channel proteins in cell
membranes react to the electric field and mechanical stress.

 


ABOUT  THE  PRESENTER


Eiichi Fukada received B.Sc. in 1944 and D.Sc. in 1960 both from
Department of Physics, University of Tokyo. He was British Council
Scholar at Department of Physics, Imperial College of Science and
Technology, London in 1956-1958. He worked at Kobayasi Institute of
Physical Research (KIPR), Tokyo in 1944-1963. He moved to the Institute
of Physical and Chemical Research (RIKEN), Saitama in 1963 and worked as
Research Director of Biopolymer Physics Laboratory until 1980, then as
an Executive Director of Riken in 1980-1984. After retirement, he
continued to work as Research Advisor, Institute of Super Materials,
ULVAC, Tsukuba in 1987-1998, and as Director, KIPR in 1992-2002 and as
Research Advisor of KIPR from 2002 to present. He was Visiting Professor
at Gakushuin University, Tokyo in 1961-1980, New York University in
1965-1966, University of San Paulo in 1974, Technical University of
Darmstadt and University of Constance in 1986. He published about 250
papers in English and about 200 papers in Japanese. He received several
awards from the academic societies in Japan, Galvani Award from the
International Symposium on Electrobiology in 1989 and Poiseille Gold
Medal Award from the International Society of Biorheology in 1995. His
research area includes piezoelectricity of biological and synthetic
polymers, electrical stimulation of bone growth, and biorhelogy of blood
and its clotting.

 

 

DATE:            Tuesday, 6 April 2010

TIME:            12h00

VENUE:         MSB-012 MSSI Building

 

 


REFRESHMENTS  WILL  BE  PROVIDED  AT  11h45


For further information, please contact:

Dr Teresa Curtin, Tel. No:  (061) 202981 or Email:  teresa.curtin at ul.ie 

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