1、高血壓腦出血、腦梗特征性蛋白標(biāo)志物研究 2、低水平甘油三酯增加腦出血患者全因死亡風(fēng)險
發(fā)布時間:2019-05-14 12:46
【摘要】:研究背景及目的腦卒中在中國已成為第一位死亡原因,是一種危害性極大的疾病,具有極高的病死率和致殘率,造成重大健康負(fù)擔(dān)。盡管已經(jīng)有很多研究揭示了腦卒中后的病理變化和治療方案,其發(fā)病機(jī)制尚未闡明。在高血壓條件下,腦血管病變引起不同類型的腦卒中的機(jī)制仍不明確。本文試圖通過血漿蛋白質(zhì)組學(xué)方法,鑒定高血壓腦梗死與高血壓腦出血患者的表達(dá)差異蛋白,發(fā)現(xiàn)相關(guān)的信號通路,提供潛在的新型蛋白標(biāo)志物。研究方法本研究前瞻性入選正常受試者(n=15),單純高血壓患者(n=15),高血壓腦梗死患者(n=15)和高血壓腦出血患者(n=15),收集受試者資料和靜脈血標(biāo)本;赥MT-LC-MS/MS蛋白質(zhì)組學(xué)方法,對4組血漿樣本進(jìn)行質(zhì)譜鑒定和定量比較,發(fā)現(xiàn)差異蛋白,進(jìn)行生物信息學(xué)分析,篩選可能與高血壓腦梗死(Hypertensive Cerebral Infarction,HCI)或者高血壓腦出血(Hypertensive Intracerebral Hemorrhage,HICH)相關(guān)的信號通路和特異蛋白質(zhì)。研究結(jié)果采用高通量TMT標(biāo)記方法對血漿蛋白進(jìn)行定量,總共找到了 191種蛋白和712個肽段。將正常組作對照,有53個蛋白至少在一個組中有兩倍或兩倍以上的上調(diào)或者下調(diào)的表達(dá)差異。其中,HCI組有21種上調(diào)蛋白和14種下調(diào)蛋白,HICH組有30種上調(diào)蛋白和14種下調(diào)蛋白。將高血壓組作為對照,有38個蛋白至少在一個組中有兩倍或兩倍以上的上調(diào)或者下調(diào)的表達(dá)差異。其中,HCI組有12種上調(diào)蛋白和14種下調(diào)蛋白,HICH組有18種上調(diào)蛋白和13種下調(diào)蛋白。通過GO富集和KEGG分析發(fā)現(xiàn),HICH組所涉及的信號通路與炎癥反應(yīng)、補(bǔ)體結(jié)合相關(guān),而HCI組所涉及的信號通路與免疫反應(yīng)相關(guān)。結(jié)論HICH組與HCI組之間存在明顯的蛋白質(zhì)差異,為高血壓腦出血、腦梗的預(yù)警和防治提供新的線索。研究目的探究腦出血患者甘油三酯水平與全因死亡的相關(guān)性。研究方法本研究入選2000年至2001年期間467例經(jīng)顱腦CT或核磁共振確診為腦出血的患者并平均隨訪4.5年。依據(jù)甘油三酯(Triglyceride,TG)濃度是否在正常參考值范圍將患者分為TG≤1.7mmol/L組(n=280)和TG1.7mmol/L組(n=187)。采集患者基線資料和靜脈血標(biāo)本,分析其基線資料和預(yù)后。終點(diǎn)事件為長期隨訪全因死亡。結(jié)果467例腦出血患者長期隨訪中死亡110例,全因死亡率為23.6%。TG≤1.7 mmol/L組的全因死亡率(30%,84/280)明顯高于TG1.7mmol/L組(13.9%,26/110),差異有統(tǒng)計學(xué)意義(logrankP0.001)。單因素Cox回歸分析顯示 TG≤1.7mmol/L 增加死亡風(fēng)險 2.341 倍(HR=2.341,95%CI 1.508~3.635,P=0.001)。經(jīng)多因素Cox因素分析校正年齡和性別等因素后,TG≤1.7mmol/L增加死亡風(fēng)險(HR=1.984,95%CI 1.258~3.13,P=0.003)。結(jié)論TG≤1.7 mmol/L增加腦出血患者全因死亡風(fēng)險。
[Abstract]:Background and objective Stroke has become the first cause of death in China, is a very harmful disease, with a very high mortality and disability rate, resulting in a major health burden. Although many studies have revealed pathological changes and treatment after stroke, the pathogenesis has not yet been clarified. Under the condition of hypertension, the mechanism of different types of stroke caused by cerebrovascular disease is still unclear. This paper attempts to identify the differential proteins expressed in patients with hypertensive cerebral infarction and hypertensive intracerebral hemorrhage by plasma proteome method, to find out the related signal pathways, and to provide a potential new protein marker. Methods the data and venous blood samples of normal subjects (n 鈮,
本文編號:2476729
[Abstract]:Background and objective Stroke has become the first cause of death in China, is a very harmful disease, with a very high mortality and disability rate, resulting in a major health burden. Although many studies have revealed pathological changes and treatment after stroke, the pathogenesis has not yet been clarified. Under the condition of hypertension, the mechanism of different types of stroke caused by cerebrovascular disease is still unclear. This paper attempts to identify the differential proteins expressed in patients with hypertensive cerebral infarction and hypertensive intracerebral hemorrhage by plasma proteome method, to find out the related signal pathways, and to provide a potential new protein marker. Methods the data and venous blood samples of normal subjects (n 鈮,
本文編號:2476729
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