Association of serum uric acid levels with the progression of Parkinson's disease in Chinese patients

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Author:
SUN Cong-cong(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
LUO Fei-fei(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
WEI Lei(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
LEI Mi(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
LI Guo-fei(Department of Neurology, Huaihe Hospital of Henan University,Kaifeng, Henan 47500, China)
LIU Zhuo-lin(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
LE Wei-dong(Department of Neurology, Baylor College of Medicine, 6501Fannin Street, Houston, TX, 77030, USA;The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China)
XU Ping-yi(Department of Neurology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China)
Journal Title:
Chinese Medical Journal
Issue:
Volume 125, Issue 04, 2012
DOI:
10.3760/cma.j.issn.0366-6999.2012.04.005
Key Word:
uric acid;Parkinson's disease;disease progression

Abstract: Background Uric acid (UA) is suspected to play a neuro-protective role in Parkinson's disease (PD).This study aimed to evaluate whether the serum UA level was associated with the disease progression of PD in a relatively large population of Chinese patients.Methods Serum UA levels were measured from 411 Chinese PD patients and 396 age-matched controls; following the uric acid colorimetric method,the serum creatinine (Scr) levels were also measured to reduce the bias caused by possible differences in renal excretion function.The disease progression was scored by Hoehn and Yahr (H&Y) scales and disease durations; PD group was divided into 3 subgroups according to H&Y scales.Independent-samples ttest was performed to analyze the differences between PD group and control group.Multiple analysis of covariance was performed to analyze the differences between PD subgroups.Spearman rank-correlation was performed to evaluate the associations between serum UA or Scr level and disease progression.Results PD patients were found to have significantly lower levels of serum UA than controls ((243.38±78.91) vs.(282.97±90.80) pmol/L,P<0.01).As the disease progression,the serum UA levels were gradually reduced.There was a significantly inverse correlation of UA levels with H&Y scales (Rs=-0.429,P <0.01) and disease duration (Rs=-0.284,P <0.01) in PD patients of both females and males.No significant difference of the Scr level between PD patients and controls was found ((70.01±14.70) vs.(69.84±16.46) μmol/L),and the Scr level was not involved in disease progression.Conclusion Lower serum UA levels may possess a higher risk of PD,which may be a potential useful biomarker to indicate the progression of PD.

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