Cerebellar Dysfunction in Adults with Prader Willi Syndrome
Laura Blanco-Hinojo1,2, Laia Casamitjana3,4, Jesus Pujol1,2
1MRI Research Unit, Department of Radiology, Hospital del Mar, 08003 Barcelona, Spain.
Journal of Clinical Medicine
|August 7, 2021
Summary
Prader Willi syndrome (PWS) patients show reduced cerebellar activation during complex motor tasks. This neuroimaging study reveals altered motor control in PWS, offering insights into coordination deficits.
Area of Science:
- Neuroscience
- Human Physiology
- Genetics
Background:
- Prader Willi syndrome (PWS) is characterized by infantile hypotonia and persistent motor coordination deficits.
- The underlying neurobiological mechanisms for these motor impairments in PWS remain largely unknown.
Purpose of the Study:
- To investigate the neural basis of motor control alterations in adults with PWS.
- To examine brain activation patterns during motor tasks using functional MRI (fMRI).
Main Methods:
- fMRI was used to assess brain activity in 23 adults with PWS and 22 healthy controls during three hand motor tasks of varying complexity.
- Behavioral assessments included hand grip strength, functional mobility, and balance tests.
Main Results:
- While no group differences were observed in the simplest task, individuals with PWS exhibited significantly reduced cerebellar activation with increasing task complexity.
- Correlations between brain activation and motor function measures showed significant group interactions.
Conclusions:
- Reduced cerebellar activation during complex motor tasks is a key finding in adults with PWS.
- This suggests that cerebellar dysfunction contributes to the motor coordination deficits observed in Prader Willi syndrome.
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