clumsiness and disturbed cerebellar development: insights from animal experiments
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ID: 207251
2003
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Abstract
Cerebellar functioning has been implied in
the fine adjustments of muscle tone, in the
coordination and the feed-forward control of
movements and posture, as well as in the
establishment and performance of motor skills.
The cerebellar cortex in mammals develops late
in neuro-ontogeny and an extrapolation from
experimental results indicates that in the
human the proliferation of the granule cells and
the development of circuitry in the cerebellar
cortex starts only in the last trimester of
pregnancy and lasts until beyond the first
birthday. This late development makes the
cerebellar development particularly vulnerable
to situations like an insufficient supply of
nutrients, which may follow placental dysfunction,
or to side effects of pharmacological
treatments like the administration of corticosteroids
in the postnatal period. We studied
whether such situations might also lead to
motor impairments. In rats, the effects of
undernutrition during the brain growth spurt
were investigated as well as those of
corticosteroids administered in a period that is
analogous to the 7th to 8th month of pregnancy
in the human. Both these interferences affect
cerebellar development and our results in rats
indicate that they also lead to retardations in
the, emergence of certain reflexes, as well as to
longer lasting motor impairments during
locomotion. Extrapolation of these results
strongly suggests that a disturbed cerebellar
development should be considered as an
important etiological factor in clumsiness in
human children.
| Reference Key |
gramsbergen2003neuralclumsiness
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|---|---|
| Authors | ;Albert Gramsbergen |
| Journal | tetrahedron |
| Year | 2003 |
| DOI |
10.1155/NP.2003.129
|
| URL | |
| Keywords |
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