山東省乙型血友病患者的基因檢測及分析
發(fā)布時間:2018-08-11 09:22
【摘要】:目的①對24例乙型血友病患者進(jìn)行臨床資料調(diào)查及分析,以期了解目前山東省乙型血友病患者治療現(xiàn)狀。②為確診乙型血友病患者的基因突變類型及尋找FIX基因突變的規(guī)律,同時分析山東省乙型血友病患者的基因突變譜,為遺傳學(xué)咨詢奠定基礎(chǔ),我們對24例明確診斷的乙型血友病男性患者進(jìn)行了基因檢測和分析。方法①采集24例乙型血友病患者的臨床資料,包括性別、年齡、發(fā)病年齡、確診年齡、遺傳史、近半年替代治療頻率等在內(nèi)的基本信息,并進(jìn)行全面的體格檢查及感染性標(biāo)志物檢查;②對24例乙型血友病患者進(jìn)行血漿凝血因子Ⅸ活性(FⅨ:C)、血漿凝血因子Ⅸ抗原(FⅨ:Ag)、血漿凝血因子Ⅷ活性(FⅧ:C)及凝血常規(guī)檢測,凝血常規(guī)主要包括活化部分凝血活酶時間(APTT)、凝血酶原時間(PT)、凝血酶時間(TT)及纖維蛋白原(FIB)。而后結(jié)合24例乙型血友病患者具體的臨床癥狀明確其表型診斷;③采集24例乙型血友病患者的外周靜脈血,提取基因組DNA;依據(jù)NCBI上GenBank中的FIX基因參考序列(GenBank NM_000133.3),利用Primer Premier5.0軟件設(shè)計8對引物,覆蓋FIX基因全部外顯子及其側(cè)翼序列;應(yīng)用PCR技術(shù)擴增24例乙型血友病患者FIX基因8個外顯子及其側(cè)翼序列;運用雙脫氧鏈終止法在ABI3730XL測序儀上對PCR擴增產(chǎn)物進(jìn)行測序;對測序結(jié)果結(jié)合Chromas軟件及BLAST與GenBank中參考序列進(jìn)行比對,尋找基因變異,確定24例乙型血友病患者FIX基因的突變類型。結(jié)果①24例乙型血友病患者均為重、中型患者,其中重型患者16例(66.7%),中型患者8例(33.3%)。②對24例乙型血友病患者進(jìn)行基因檢測共發(fā)現(xiàn)18種基因突變類型,包括錯義突變13種,無義突變2種,缺失突變3種。其中13種突變?yōu)榧簣蟮赖耐蛔冾愋?5種突變類型國際上未見報道。③5種新的突變類型分別為:c.200delA、c.306delT、c.688-690delGGA、c.1025C c.1157CA。結(jié)論乙型血友病患者臨床表現(xiàn)有明顯異質(zhì)性,主要表現(xiàn)在首次出血年齡、首次關(guān)節(jié)出血年齡、出血頻率、關(guān)節(jié)畸形數(shù)目等方面。FIX基因突變是導(dǎo)致乙型血友病的根本原因。對24例乙型血友病患者的FIX基因分析表明基因突變具有明顯的異質(zhì)性,且錯義突變?nèi)允悄壳癋IX基因的主要突變方式。FIX基因突變常見的外顯子部位與他們編碼的氨基酸蛋白行使功能時所起的作用有關(guān)。通過基因檢測及分析,直接闡述了乙型血友病患者發(fā)病的分子學(xué)機制,為進(jìn)一步功能學(xué)方面的研究提供了基礎(chǔ)。本研究發(fā)現(xiàn)5種新的突變類型,豐富了FIX基因突變譜,也為乙型血友病的分子學(xué)發(fā)病機制提供了一定的分析依據(jù);驕y序技術(shù)是診斷乙型血友病患者及攜帶者最直接、最準(zhǔn)確的方法之一。
[Abstract]:Objective 1 to investigate and analyze the clinical data of 24 patients with type B hemophilia in order to understand the gene mutation type of type B hemophilia in Shandong Province and to find out the rule of mutation of FIX gene. In order to lay a foundation for genetic counseling, 24 patients with type B hemophilia were detected and analyzed. Methods 1 the clinical data of 24 patients with type B hemophilia were collected, including sex, age, age of onset, age of diagnosis, genetic history, frequency of replacement therapy in the last half year, etc. In addition, 24 patients with type B hemophilia were examined by physical examination and infectious markers. The plasma coagulation factor IX activity (F IX: C), the plasma coagulation factor IX antigen (F IX: AG), the plasma coagulation factor 鈪,
本文編號:2176576
[Abstract]:Objective 1 to investigate and analyze the clinical data of 24 patients with type B hemophilia in order to understand the gene mutation type of type B hemophilia in Shandong Province and to find out the rule of mutation of FIX gene. In order to lay a foundation for genetic counseling, 24 patients with type B hemophilia were detected and analyzed. Methods 1 the clinical data of 24 patients with type B hemophilia were collected, including sex, age, age of onset, age of diagnosis, genetic history, frequency of replacement therapy in the last half year, etc. In addition, 24 patients with type B hemophilia were examined by physical examination and infectious markers. The plasma coagulation factor IX activity (F IX: C), the plasma coagulation factor IX antigen (F IX: AG), the plasma coagulation factor 鈪,
本文編號:2176576
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