1. Salivary α‐Synuclein as a Candidate Biomarker of Parkinsonism in 22q11.2 Deletion Syndrome.
- Author
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Fanella, Martina, Cerulli Irelli, Emanuele, Accinni, Tommaso, Di Fabio, Fabio, Putotto, Carolina, Pulvirenti, Federica, Bellomi, Francesco E., Di Bonaventura, Carlo, and Vivacqua, Giorgio
- Subjects
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DIGEORGE syndrome , *ALPHA-synuclein , *PARKINSONIAN disorders , *22Q11 deletion syndrome , *PARKINSON'S disease , *ENZYME-linked immunosorbent assay - Abstract
Background: 22q11.2 deletion syndrome (22q11.2DS) has been linked to an increased risk of early‐onset Parkinson's disease. However, the pathophysiological mechanisms underlying parkinsonism remain poorly understood. Objective: The objective is to investigate salivary total α‐synuclein levels in 22q11.2DS patients with and without parkinsonian motor signs. Methods: This cross‐sectional study included 10 patients with 22q11.2DS with parkinsonism (Park+), ten 22q11.2DS patients without parkinsonism (Park−), and 10 age and sex‐comparable healthy subjects (HS). Salivary and serum α‐synuclein levels were measured using enzyme‐linked immunosorbent assay. Results: Salivary total α‐synuclein concentration was significantly lower in Park (+) patients than in Park (−) patients and HS (P = 0.007). In addition, salivary α‐synuclein showed good accuracy in discriminating Park (+) from Park (−) patients (area under the curve = 0.86) and correlated with motor severity and cognitive impairment. Conclusion: This exploratory study suggests that the parkinsonian phenotype of 22q11.2DS is associated with a reduced concentration of monomeric α‐synuclein in biological fluids. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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