plasma dna mediate autonomic dysfunctions and white matter injuries in patients with parkinson’s disease
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2017
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Abstract
Background. Cardiovascular autonomic dysfunction is well known in Parkinson’s disease (PD) presentation and it produces hypoperfusion of vital organs. The association between cardiovascular autonomic dysfunction and oxidative stress was examined in previous animal models. Oxidative stress and neuroinflammation were thought to have roles in PD pathogenesis. Owing to the relative low intrinsic antioxidative properties, brain white matter (WM) is vulnerable to the oxidative stress. This study is conducted to examine possible relationships by using a hypothesis-driven mediation model. Methods. Twenty-nine patients with PD and 26 healthy controls participated in this study, with complete examinations of cardiac autonomic parameters, plasma DNA level, and WM integrity. A single-level three-variable mediation model was used to investigate the possible relationships. Results. The elevated serum oxidative stress biomarkers include plasma nuclear DNA and mitochondrial DNA, and poorer cardiac autonomic parameters and multiple regional microstructural WM changes are demonstrated. Further mediation analysis shows that plasma nuclear DNA served as the mediators between poorer baroreflex sensitivity and mean diffusivity changes in cingulum. Conclusions. These results provide a possible pathophysiology for how the poor baroreflex sensitivity and higher oxidative stress adversely impacted the WM integrity. This model could provide us with a piece of the puzzle of the entire PD pathogenesis.
| Reference Key |
chen2017oxidativeplasma
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| Authors | ;Meng-Hsiang Chen;Pei-Chin Chen;Cheng-Hsien Lu;Hsiu-Ling Chen;Yi-Ping Chao;Shau-Hsuan Li;Yi-Wen Chen;Wei-Che Lin |
| Journal | journal of aoac international |
| Year | 2017 |
| DOI |
10.1155/2017/7371403
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| URL | |
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