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作 者:林庆玲[1] 蔡彦宁[1] 袁艳鹏[1] 左晓虹[1] 陈彪[2]
机构地区:[1]首都医科大学宣武医院神经生物学研究室,教育部神经变性病重点实验室,北京100053 [2]首都医科大学宣武医院老年病研究所神经生物学研究室、教育部神经变性病学重点实验室
出 处:《中华行为医学与脑科学杂志》2011年第7期586-588,共3页Chinese Journal of Behavioral Medicine and Brain Science
基 金:国家重点基础研究“973”发展计划(2006CB500701,2006CB943703,2007CB947704);国家自然科学基金(81071011,30400148,30430280)
摘 要:目的研究帕金森病患者时钟基因的表达,探讨帕金森病的分子时钟机制。方法实验对象为17例帕金森病(PD)患者(9例男性,8例女性)和16例正常人对照(9例男性,7例女性),分别在夜间21:00、00:00、06:00和09:00四个时间点取血样,用实时定量RT—PCR检测时钟基因Bmal1和Bmal2的mRNA表达水平。结果PD患者中,Bmal1在21:00、00:00、06:00的表达水平与正常对照差异具有显著性:21:00[(22.17±4.09),(51.14±8.31),P=0.003];00:00[(30.30±5.45),(100.00±24.71),P=0.008];06:00[(19.02±3.33),(65.61±14.11),P=0.002]。Bmal2在21:00、00:00的表达水平与正常对照差异有显著性:21:00[(48.09±7.40),(84.96±9.34),P=0.005];00:00[(65.85±7.88),(100.00±11.78),P=0.025]。结论PD患者的周围分子时钟发生了改变。PD患者时钟基因Bmal1和Bmal2在外周血的相对表达水平明显减低,为疾病监控和研究疾病对药物的反应性提供分子基础。Objective To study the expression of clock genes in Parkinson's disease (PD) and also the molecular clock machinery of PD. Methods Seventeen PD patients ( nine men, eight women) and sixteen agematched controls (nine men, seven women) were investigated in this study. Blood samples were collected over a 12h span at 21: 00, 00: 00, 06:00 and 09: 00. Using a real-time PCR assay,the peripheral molecular clock was examined by measuring Bmal1 and Bmal2 expression in total leukocytes during the dark span (from 21:00 to 09: 00) in PD patients and age-matched healthy controls. Results At PD,the relative abundance of Bmal1 was significantly lower at 21 : 00, 00:00 and 06:00 ( 21 : 00 : ( 22.17 ± 4.09 ) vs ( 51.14 ± 8.31 ) , P = 0. 003,00: 00 : (30.30±5.45) vs (100.00±24.71),P=0.008,06:00:(19.02±3.33) vs (65.61 ±14.11), P=0.002). The relative Bmal2 levels in PD patients were significantly less abundant than controls at 21 : 00 and 00:00 (21:00:(48.09 ±7.40) vs (84.96 ±9.34), P=0.005;00: 00: ( (65.85 ±7.88) vs (100.00 ± 11.78), P= 0. 025 ). Conclusion These results suggest that a peripheral molecular clock is altered in PD patients. In addition, the relative abundance of Bmal1 and Bmal2 was significantly lower in PD patients versus control subjects, which can provide a molecular basis to help monitor disease progression and response to investigational drugs.
关 键 词:BMAL1 Bmal2 昼夜节律 白细胞 帕金森病
分 类 号:R742.5[医药卫生—神经病学与精神病学]
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