CEP135表達與精子活力及精子DNA損傷的相關(guān)性研究
發(fā)布時間:2018-11-04 20:55
【摘要】:目的精子活力低下所導致的弱精癥是男性不育的重要原因之一,深入探討弱精癥的發(fā)生機制、提出新的治療策略是國內(nèi)外生殖領(lǐng)域的一個研究熱點。本實驗旨在通過測定弱精癥精子細胞的活力、DNA損傷率及中心小體蛋白135(centrosomalprotein135kDa,,CEP135)的相關(guān)表達量,并探討CEP135表達與精子活力和精子DNA損傷率之間的相互關(guān)系,以確定CEP135在弱精癥診療過程中的指導價值,并對其作用機制進行初步探討。 方法應用計算機輔助精液分析對91例精液樣本進行參數(shù)檢測,按照WHO標準,根據(jù)(a+b)級精子百分率分為3組,Ⅰ組31例:(a+b)級精子>50%或a級精子>25%;Ⅱ組30例:(a+b)級精子25%~50%;Ⅲ組30例:(a+b)級精子<25%。利用精子染色質(zhì)擴散實驗(Sperm chromatin dispersion test,SCD)檢測各組精子細胞的DNA損傷率。逆轉(zhuǎn)錄-實時定量聚合酶鏈反應(Reversetranscription-quantitative real-time PCR, RT-qPCR)檢測CEP135信使RNA(Messenger RNA,mRNA)在三組精液中的表達情況,采用2-ΔCT公式(ΔCT=CT目的-CT內(nèi)參)計算目的基因的相對表達量(Relative expression,Re),瓊脂糖凝膠電泳驗證RT-qPCR的實驗結(jié)果。應用SPSS16.0軟件統(tǒng)計數(shù)據(jù)并對精子細胞的活力、DNA損傷率及CEP135mRNA的相對表達量進行相關(guān)性分析。 結(jié)果3組精液中精子細胞的活力分別為62.31%±7.97%、36.63%±6.61%、16.51%±6.57%,DNA損傷率分別為17.18%±6.72%、22.86%±6.67%、27.30%±6.44%,CEP135mRNA的平均相對表達量分別為9.45×10-2±2.64×10-4、9.48×10-2±3.24×10-4、9.49×10-2±2.52×10-4,各組之間比較差異均有統(tǒng)計學意義(P<0.05)。DNA損傷率及CEP135mRNA的相對表達量均與精子細胞的活力呈顯著負相關(guān)(r分別為-0.619,-0.574;P均<0.01);隨著CEP135mRNA相對表達量的升高,DNA損傷率也逐漸增加,二者之間顯著正相關(guān)(r=0.316;P<0.01)。 結(jié)論弱精癥精液中高表達的CEP135mRNA與精子細胞活力的降低及DNA損傷率的增高密切相關(guān),具有顯著相關(guān)性。臨床上可以通過測定精子細胞CEP135mRNA的相對表達量來評估患者的精液質(zhì)量,并通過基因干擾技術(shù)影響CEP135mRNA的相對表達量進而改善精液質(zhì)量,提高弱精癥的生育能力。
[Abstract]:Objective Aspermia caused by low sperm motility is one of the important causes of male infertility. It is a hot research topic in reproductive field at home and abroad to probe into the mechanism of spermatogenesis and put forward new treatment strategy. The aim of this study was to investigate the relationship between CEP135 expression and sperm motility and sperm DNA damage rate by measuring the activity of spermatozoa, the rate of DNA damage, and the expression of central body protein 135 (centrosomalprotein135kDa,CEP135) in asthenospermic spermatozoa. To determine the guiding value of CEP135 in the diagnosis and treatment of azoospermia and to explore its mechanism. Methods the parameters of 91 semen samples were measured by computer assisted semen analysis. According to the WHO standard, according to the percentage of (a b) grade sperm, 31 cases of group 鈪
本文編號:2311110
[Abstract]:Objective Aspermia caused by low sperm motility is one of the important causes of male infertility. It is a hot research topic in reproductive field at home and abroad to probe into the mechanism of spermatogenesis and put forward new treatment strategy. The aim of this study was to investigate the relationship between CEP135 expression and sperm motility and sperm DNA damage rate by measuring the activity of spermatozoa, the rate of DNA damage, and the expression of central body protein 135 (centrosomalprotein135kDa,CEP135) in asthenospermic spermatozoa. To determine the guiding value of CEP135 in the diagnosis and treatment of azoospermia and to explore its mechanism. Methods the parameters of 91 semen samples were measured by computer assisted semen analysis. According to the WHO standard, according to the percentage of (a b) grade sperm, 31 cases of group 鈪
本文編號:2311110
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