初探血漿外泌體中miRNA在散發(fā)性帕金森病臨床診斷中的價值
[Abstract]:BACKGROUND: Parkinson's disease (PD) is the second most common neurodegenerative disease in the world. It has been found that the incidence of PD is closely related to age. The incidence of PD is 1.7% in the elderly over 65 years old and 3-5% in the elderly over 70 years old. But the first symptoms of PD are often tremor, bradykinesia or myotonia because of atypical symptoms in the early stage of the disease. When these symptoms occur, in fact, the degeneration of dopaminergic neurons is lost by 50% - 70%, which often makes the patient miss the opportunity of early diagnosis and treatment. The clinical and pathological diagnostic coincidence rate of PD is only about 76%. Therefore, to explore a biomarker which is helpful to the clinical diagnosis of early PD, and is non-invasive and traumatic, for the early effective treatment. In recent years, the research on biomarkers of PD is mainly focused on cerebrospinal fluid and plasma/serum, but the acquisition of cerebrospinal fluid requires lumbar puncture, which is invasive, difficult for patients to accept and limited to use. At present, the main PD biomarkers derived from plasma/serum are DJ-1, alpha-synuclein and microRNA, but the results of different studies on the expression levels of DJ-1, alpha-synuclein are different, even contradictory, and their concentrations are not correlated with the severity of PD. MicroRNA (microRNA) is a small, single-stranded, non-coding RNA consisting of 21-24 nucleotides. Various kinds of microNAs are found in human serum, and the expression profiles are specific in different states of the body. Previous studies have shown that the expression profiles of microRNAs in plasma/serum of Parkinson's disease patients are significantly different from those of normal controls. However, the results of different studies are different, and the stability and repeatability are insufficient. The following two aspects are needed: 1. The composition of blood is complex, the type and expression of microRNAs acquired change quickly, interfering with the stability of the results; 2. Because of the existence of blood-brain barrier, blood and brain lack of direct contact. There are three main stable forms of Na in vitro: 1. binding to high-density lipoprotein, but this condition is highly cell-specific and mainly exists in hepatocytes; 2. binding to ago2 protein, but there is no convincing evidence that this form can mediate the transport of functional mirna, 3. encapsulating in the membrane vesicles such as exosomes, which is The exosome is a membrane vesicle with a diameter of about 30-100 nm. It can be secreted by a variety of cells under physiological and pathological conditions and exists in a variety of body fluids. The central nervous system metastases to the systemic circulation, and the exosome has a bimembranous structure which can resist the attack of ribonuclease in the blood, so the miRNA is not easy to degrade and has high stability. Specific miRNA expression profiles in plasma exosomes of PD patients were selected and analyzed by target gene prediction, KEGG pathway analysis and qRT-PCR to evaluate their diagnostic value. Exosome morphology was observed by electron microscopy, the concentration and size distribution of qnano were measured, and the expression of exosome marker protein CD63 and Alix were detected by Western blot for identification. 3. the expression of miRNA in plasma exosome was detected by high channel sequencing. The predicted target genes were analyzed for KEGG pathway. 5. Twelve different miRNAs were identified by qRT-PCR using TaqMan probe. Results: 1. Model was isolated from plasma with a diameter of 100 nm. Under electron microscopy, the model showed round or cup-shaped vesicles encapsulated by lipid bilayer and expressed exosome-specific marker proteins CD63 and cd63. Alx particles were identified as exosomes. 2. Compared with the control group, 66 microRNAs were significantly different in PD group (Ratio 2.0, P 0.05). 27 of them were up-regulated and 39 were down-regulated. 3. The predicted PD-related target genes were involved in ECM receptor signaling pathway, neurotrophic pathway, VEGF signaling pathway, TGF transforming factor signaling pathway. Six kinds of microRNAs (hsa-microRNAs-195, hsa-microRNAs-302 e, hsa-mi R-15b hsa-microRNAs-485-5p, hsa-microRNAs-4483, hsa-microRNAs-493-3p) were found to be expressed in the plasma of the patients and in the blood of healthy subjects. Hsa-mi R-195, hsa-mi-mi-302e were significantly up-regulated, hsa-mi-r-195, hsa-mi-15b hsa-mi-485-5p, hsa-mi-4483, hsa-mi-mi-493-3p were significantly down-regulated. CONCLUSIONS: 1. Plasma exosomes were successfully isolated and identified. 2. The expression profiles of microRNA in plasma exosomes of PD patients were significantly different from those of normal controls. MiRNA hsa-Mi-195, hsa-mi R-302 E were significantly up-regulated in the exosome, while hsa-Mi-15b hsa-Mi-485-5p, hsa-Mi-4483, hsa-Mi-493-3p were significantly down-regulated; these six microRNAs combinations may serve as potential biomarkers for PD diagnosis.
【學位授予單位】:南昌大學
【學位級別】:博士
【學位授予年份】:2016
【分類號】:R742.5
【相似文獻】
相關(guān)期刊論文 前10條
1 張朝陽,湯洪川,劉風榮;帕金森病與腦干聽覺誘發(fā)電位[J];臨床薈萃;2000年22期
2 劉焯霖;帕金森病的診治體會[J];新醫(yī)學;2000年10期
3 張巍,雷征霖,孫秀蘭,宋春莉;血管性帕金森綜合征與帕金森病患者的臨床對比分析[J];中華神經(jīng)科雜志;2000年05期
4 劉萍,邊強;尼古丁有助于帕金森病治療[J];國外醫(yī)藥(合成藥 生化藥 制劑分冊);2000年04期
5 王建,劉焯霖;帕金森病病因的新線索[J];國外醫(yī)學(內(nèi)科學分冊);2000年04期
6 覃艷玲;帕金森病患者的護理體會[J];廣西醫(yī)科大學學報;2000年S1期
7 侯強,于長本;帕金森病伴發(fā)的抑郁[J];臨床精神醫(yī)學雜志;2000年06期
8 張巍,梁戰(zhàn)華,雷征霖;肌萎縮側(cè)索硬化癥合并帕金森病1例報告[J];臨床神經(jīng)病學雜志;2000年03期
9 莊立;帕金森病的癥狀前指標[J];現(xiàn)代康復;2000年02期
10 劉泉開;帕金森病治療的新進展[J];現(xiàn)代診斷與治療;2000年02期
相關(guān)會議論文 前10條
1 鄒密;;老年帕金森病患者跌倒的危險因素及護理干預[A];中華護理學會全國第12屆老年護理學術(shù)交流暨專題講座會議論文匯編[C];2009年
2 康婧;羅曉光;任艷;何志義;;應激誘發(fā)帕金森病的相關(guān)因素分析[A];中華醫(yī)學會第十三次全國神經(jīng)病學學術(shù)會議論文匯編[C];2010年
3 李友海;田仰華;陳先文;汪凱;;帕金森病患者的時間感知研究[A];中華醫(yī)學會第十三次全國神經(jīng)病學學術(shù)會議論文匯編[C];2010年
4 李如奎;;帕金森病研究進展[A];第三屆全國中西醫(yī)結(jié)合神經(jīng)系統(tǒng)疾病學術(shù)會議論文集[C];2000年
5 楊曉軍;李筱婷;;從中醫(yī)角度探討帕金森病[A];中國中西醫(yī)結(jié)合學會成立20周年紀念大會論文集[C];2001年
6 周文泉;于向東;;對帕金森病研究的思索[A];第三次全國中西醫(yī)結(jié)合養(yǎng)生學與康復醫(yī)學學術(shù)研討會論文集[C];2002年
7 韓蓉蓉;范亞瑜;吳集雄;徐曉華;劉漢偉;;帕金森病特殊類型的植物神經(jīng)功能障礙——食性低血壓[A];中華醫(yī)學會第七次全國神經(jīng)病學學術(shù)會議論文匯編[C];2004年
8 歐陽荔莎;;進行性核上性麻痹誤診為帕金森病1例[A];全國外科、神經(jīng)內(nèi)外科護理學術(shù)交流暨專題講座會議論文匯編[C];2006年
9 干靜;周明珠;劉振國;陳偉;陸麗霞;吳佳英;;帕金森病患者自主神經(jīng)功能障礙評估[A];第十一屆全國神經(jīng)病學學術(shù)會議論文匯編[C];2008年
10 史新沖;張祥松;易暢;;~(18)F-FDG PET/CT顯像在帕金森病診斷中的應用[A];中華醫(yī)學會第九次全國核醫(yī)學學術(shù)會議論文摘要匯編[C];2011年
相關(guān)重要報紙文章 前10條
1 范又;如何早期發(fā)現(xiàn)帕金森病[N];光明日報;2006年
2 羅剛;近八成帕金森病患者看病不及時[N];健康報;2007年
3 蔣雨平;帕金森病認識四誤區(qū)[N];家庭醫(yī)生報;2007年
4 孫燕明;帕金森病患者要嚴防抑郁[N];中國消費者報;2007年
5 程守勤 蔣廷玉;帕金森病發(fā)病率居高不下[N];新華日報;2006年
6 楊鋒;及早防范帕金森病[N];醫(yī)藥經(jīng)濟報;2006年
7 李尤佳;帕金森病——中老年人的“絆腳石”[N];中國中醫(yī)藥報;2006年
8 劉衛(wèi)宏;帕金森病并非老年人的“專利”[N];中國中醫(yī)藥報;2007年
9 ;科學家發(fā)現(xiàn):帕金森病早期確診新法[N];新華每日電訊;2008年
10 程守勤;六成帕金森病人治療不規(guī)范[N];健康報;2008年
相關(guān)博士學位論文 前10條
1 王敏;帕金森病患者的輔助診斷與手運動補償研究[D];華東理工大學;2012年
2 黃思菲;快動眼期睡眠行為障礙和帕金森病患者嗅覺分析及價值[D];復旦大學;2014年
3 高靚;CCL2在帕金森病輕度認知功能障礙中的作用及機制研究[D];南方醫(yī)科大學;2015年
4 谷有全;TLR4在帕金森病小鼠中腦的表達及其對炎癥介質(zhì)釋放的影響[D];南方醫(yī)科大學;2014年
5 李紅燕;早發(fā)型帕金森病患者的臨床特征及維吾爾族早發(fā)型家族性帕金森病PARKIN基因突變的研究[D];安徽醫(yī)科大學;2014年
6 胡盼盼;帕金森病患者的認知神經(jīng)心理學研究[D];安徽醫(yī)科大學;2014年
7 劉崴;帕金森病LRRK2和VPS35基因突變研究[D];天津醫(yī)科大學;2012年
8 康文巖;α-突觸共核蛋白在帕金森病發(fā)病機制及生物學標記物中的研究[D];上海交通大學;2012年
9 李桂花;新疆地區(qū)帕金森病危險因素、癥狀學和ATP13A2基因多態(tài)性研究[D];新疆醫(yī)科大學;2015年
10 劉杰;γ-氨基丁酸(GABA)遞質(zhì)系統(tǒng)相關(guān)藥物在帕金森病中的作用研究[D];復旦大學;2014年
相關(guān)碩士學位論文 前10條
1 康婧;應激誘發(fā)帕金森病的相關(guān)因素分析[D];中國醫(yī)科大學;2010年
2 常崇旺;人工神經(jīng)網(wǎng)絡(luò)模型診斷帕金森病的研究[D];第四軍醫(yī)大學;2004年
3 陳伏祥;帕金森病輕度認知障礙患者腦灰質(zhì)改變研究[D];福建醫(yī)科大學;2015年
4 韓薇;α-突觸核蛋白(SNCA)基因多態(tài)性與帕金森病易感性的meta分析[D];河北醫(yī)科大學;2015年
5 王倩;帕金森病患者自主神經(jīng)功能的研究[D];河北醫(yī)科大學;2015年
6 劉疏影;不同帕金森病亞型(早發(fā)晚發(fā)型)的多巴胺轉(zhuǎn)運體顯像特征分析[D];復旦大學;2014年
7 徐睿鑫;楊明會教授治療帕金森病學術(shù)經(jīng)驗研究[D];中國人民解放軍醫(yī)學院;2015年
8 李洋;帕金森病患者嗅覺相關(guān)腦區(qū)的MRI研究[D];蘇州大學;2015年
9 李玲;早期帕金森病患者視網(wǎng)膜及視野改變的臨床研究[D];蘇州大學;2015年
10 程筱雨;血清反應因子在帕金森病發(fā)病中的作用和機制研究[D];蘇州大學;2015年
,本文編號:2185969
本文鏈接:http://sikaile.net/yixuelunwen/shenjingyixue/2185969.html