Abstract：
:Fatigue is a very common non-motor symptom in Parkinson disease (PD) patients. It included physical fatigue and mental fatigue. The potential mechanisms of mental fatigue involving serotonergic dysfunction and abnormal iron metabolism are still unknown. Therefore, we evaluated the fatigue symptoms, classified PD patients into fatigue group and non-fatigue group, and detected the levels of serotonin, iron and related proteins in CSF and serum. In CSF, 5-HT level is significantly decreased and the levels of iron and transferrin are dramatically increased in fatigue group. In fatigue group, mental fatigue score is negatively correlated with 5-HT level in CSF, and positively correlated with the scores of depression and excessive daytime sleepiness, and disease duration, also, mental fatigue is positively correlated with the levels of iron and transferrin in CSF. Transferrin level is negatively correlated with 5-HT level in CSF. In serum, the levels of 5-HT and transferrin are markedly decreased in fatigue group; mental fatigue score exhibits a negative correlation with 5-HT level. Thus serotonin dysfunction in both central and peripheral systems may be correlated with mental fatigue through abnormal iron metabolism. Depression, excessive daytime sleepiness and disease duration were the risk factors for mental fatigue of PD.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zuo LJ,Yu SY,Hu Y,Wang F,Piao YS,Lian TH,Yu QJ,Wang RD,Li LX,Guo P,Du Y,Zhu RY,Jin Z,Wang YJ,Wang XM,Chan P,Chen SD,Wang YJ,Zhang Wdoi
10.1038/s41598-016-0018-zsubject
Has Abstractpub_date
2016-12-21 00:00:00pages
19issue
1issn
2045-2322pii
10.1038/s41598-016-0018-zjournal_volume
6pub_type
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