PMID- 29350074 OWN - NLM STAT- MEDLINE DCOM- 20180910 LR - 20200205 IS - 1473-2300 (Electronic) IS - 0300-0605 (Print) IS - 0300-0605 (Linking) VI - 46 IP - 4 DP - 2018 Apr TI - Serum concentration and clinical significance of brain-derived neurotrophic factor in patients with Parkinson's disease or essential tremor. PG - 1477-1485 LID - 10.1177/0300060517748843 [doi] AB - Objectives The serum concentration of brain-derived neurotrophic factor (BDNF) was compared among patients with Parkinson's disease (PD), patients with essential tremor (ET), and healthy participants, and its association with clinical features of PD and ET was assessed. Methods Demographic and clinical data were collected from 60 patients with PD at different clinical stages, 60 patients with ET, and 60 controls. All participants' serum BDNF concentrations were measured. Their motor abilities and activity were assessed by the Unified PD Rating Scale and the Hoehn and Yahr (H-Y) staging scale. Results Serum BDNF was significantly lower in patients with PD than in patients with ET and controls. BDNF decreased only in the early disease stages (H-Y stages I and II), but increased markedly in the advanced stages (H-Y stages III-V). There was no significant difference between patients with ET and controls. The BDNF concentration was negatively correlated with age at PD onset and positively associated with disease duration, severity of PD symptoms, and treatment with L-DOPA. Conclusions A low serum BDNF concentration may serve as a biomarker in the early stages of PD, whereas a high concentration with PD progression may be due to treatment with L-DOPA in the advanced stages. FAU - Huang, Yixian AU - Huang Y AD - 1 Department of Neurology, The Second Affiliated Hospital of Soochow University, No. 1055 Sanxiang Road, Suzhou, China. FAU - Yun, Wenwei AU - Yun W AD - 3 Laboratory of Neurological Diseases, Department of Neurology, Changzhou No. 2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou, China. FAU - Zhang, Min AU - Zhang M AD - 3 Laboratory of Neurological Diseases, Department of Neurology, Changzhou No. 2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou, China. FAU - Luo, Weifeng AU - Luo W AD - 1 Department of Neurology, The Second Affiliated Hospital of Soochow University, No. 1055 Sanxiang Road, Suzhou, China. AD - 2 Institute of Neuroscience, Soochow University, Suzhou, China. FAU - Zhou, Xianju AU - Zhou X AD - 3 Laboratory of Neurological Diseases, Department of Neurology, Changzhou No. 2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, 29 Xinglong Alley, Changzhou, China. LA - eng PT - Journal Article DEP - 20180119 PL - England TA - J Int Med Res JT - The Journal of international medical research JID - 0346411 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 7171WSG8A2 (BDNF protein, human) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Brain-Derived Neurotrophic Factor/*blood MH - Case-Control Studies MH - Demography MH - Essential Tremor/*blood MH - Female MH - Humans MH - Male MH - Middle Aged MH - Parkinson Disease/*blood PMC - PMC6091839 OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Hoehn and Yahr staging scale OT - L-DOPA OT - Parkinson's disease OT - biomarker OT - essential tremor EDAT- 2018/01/20 06:00 MHDA- 2018/09/11 06:00 PMCR- 2018/01/19 CRDT- 2018/01/20 06:00 PHST- 2018/01/20 06:00 [pubmed] PHST- 2018/09/11 06:00 [medline] PHST- 2018/01/20 06:00 [entrez] PHST- 2018/01/19 00:00 [pmc-release] AID - 10.1177_0300060517748843 [pii] AID - 10.1177/0300060517748843 [doi] PST - ppublish SO - J Int Med Res. 2018 Apr;46(4):1477-1485. doi: 10.1177/0300060517748843. Epub 2018 Jan 19.