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Abstract

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Objective : In this experimental study, authors evaluated the effect of repeated graft
of the fetal midbrain cells on rat model of hemiparkinsonism.
Materials & Methods : Following injection of the 8-hydroxydopamine into striatum.
we examined the behavior(turning response to amphetamine and apomorphine) at 2, 4
and 8 weeks. Their turning behavior persisted until 8 weeks after lesion making Only
those with turning behavior of more than average 6.2 turns/minute by amphetamine test
were selected for transplantation.
Three different methods of transplantation were assigned into three groups and
compacted with each other to evaluate their efficiencies in improving behavioral
responses. In first method, the volume of the transplanted cells were equivalent to that
of one fetal midbrain. The volume of the transplanted cells were twice as much as that
of one fetal midbrain in a group with second method The last group consisted of
repeated transplantation Here. we transplanted the same amount of fetal midbrain cells
as the in group 2 with two divided doses in one month interval.
Results : The second and third group improved from amphetamine test
significantly(p<0.05), whereas first group failed to show any significant improvement
from same test. The results from second and third group were not significantly different
from each other.
Conclusion : This results suggest that transplantation of two volumes of the fetal
midbrain is needed to improve the turning behavior of this model of parkinsonism. This
volume can be tansplanted at once or it may be transplanted in two divided volumes
with time interval, with similar effect.

Å°¿öµå

Parkinsonism; Transplantatio; Rotation study; Rat;

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