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Changed transferrin sialylation in Parkinson's disease
G J van Kamp1, K Mulder, M Kuiper
1Department of Clinical Chemistry, Free University Hospital, Amsterdam, The Netherlands.
Summary
Parkinson's disease (PD) alters serum transferrin sialylation, shifting towards more sialylated forms. This change in transferrin, crucial for iron homeostasis, may contribute to PD
Area of Science:
- Neuroscience
- Biochemistry
Background:
- Transferrin sialylation impacts iron homeostasis.
- Altered protein glycosylation is implicated in neurodegenerative diseases.
Purpose of the Study:
- To investigate transferrin sialylation patterns in Parkinson's disease (PD).
- To compare sialylation in serum and cerebrospinal fluid (CSF) between PD patients and healthy controls.
Main Methods:
- Analysis of sialylation patterns of transferrin in serum and CSF.
- Comparison between 90 PD patients (de novo, treated, dementing, non-dementing) and 21 healthy controls.
Main Results:
- Serum transferrin showed a significant shift towards more sialylated forms in PD patients, irrespective of treatment or dementia status.
- No significant shift in CSF transferrin sialylation was observed in PD patients.
- The tau-transferrin fraction, reduced in de novo PD, normalized with treatment.
Conclusions:
- Alterations in serum transferrin sialylation may play a role in Parkinson's disease pathophysiology.
- These findings highlight potential links between iron homeostasis and PD progression.