ABSTRACT
Objective:To investigate the relationship between rapid eye movement sleep behavior disorder(RBD)and neurofilament light chain(NfL)levels in patients with Parkinson's disease(PD).Methods:General clinical data of 121 PD patients and 38 healthy controls(HC)who visited the Department of Geriatric Neurology of the First Affiliated Hospital of Kunming Medical University from June 2019 to January 2021 were collected in a prospective study.According to the Rapid Eye Movement Sleep Behavior Disorder Questionnaire(RBDSQ), PD patients were divided into a PD with RBD group(PD-RBD, RBDSQ≥6)and a PD without RBD group(PD-NRBD, RBDSQ<6). General clinical data and plasma NfL levels of patients in the groups were compared.In addition, symptoms during exercise, during non-exercise, and sleep quality in the groups were also compared.Results:Plasma NfL levels were higher in the PD group than in the HC group(19.39 ng/L, 12.58-31.78; 14.85 ng/L, 9.78-22.15; Z=-2.492, P<0.05); plasma NfL levels were significantly higher in the PD-RBD group than in the PD-NRBD group and in the HC group(25.29 ng/L, 19.09-34.75; 17.14 ng/L, 11.70-26.67; 14.85 ng/L, 9.78-22.15; Z=-3.434, P<0.01); there was no significant difference in plasma NfL levels between the HC group and the PD-NRBD group( P>0.05). Receiver operating characteristic(ROC)curve analysis showed that, when the plasma NfL cutoff was set at 17.86 ng/L, PD-RBD and PD-NRBD could be distinguished( AUC=0.70, 95% CI=0.60-0.80, sensitivity 82%, specificity 54%). Binary logistic regression identified NfL level as an independent predictor of PD-RBD( β=0.068, OR=1.103, P=0.003). Conclusions:PD-RBD patients have increased plasma NfL levels, which can potentially serve as a biomarker for PD with RBD.
ABSTRACT
Objective To investigate the correlation between S100B protein and the stability of carotid artery arteriosclero‐sis .Methods A total of 200 patients with carotid artery arteriosclerosis(CAS) were assigned as study group ,and then subdivided into stable plaques (SP)group and instable plaques (IP)group ,and 198 whoes age and gender well matched unrelated healthy sub‐jects were enrolled as control group .The levels of S100B and hs‐CRP of the 3 groups were measured by ELESA .All the diagnosis were confirmed by color Doppler and B‐ultrasound .Results The level of serum S100B was significantly higher in IP group than that of SP group and control group(P<0 .01) .There was no statistical significance between IP and SP group in the level of serum S100B(P=0 .07) .The level of hs‐CRP was significantly higher in IP group than that of SP group and control group(P<0 .01) . There was no statistical significance between IP and SP group in the level of serum hs‐CRP(P=0 .59) .Conclusion The increase of serum level of S100B in the IP CAS patients shows that S100B may take part in the pathogenic mechanism of CAS ,and regulating of S100B may become the potential therapeutic targets for CAS .