目的检测来源于HCA587的HLA-A2限制性表位肽免疫HLA-A2转基因小鼠后产生细胞应答的水平,筛选出体内具有免疫原性的HLA-A2限制性表位肽。方法将来源于HCA587的候选HLA-A2限制性肽与MHC-Ⅱ类限制性肽HBV-core128-140、不完全弗氏佐剂、Cp G ODN1826联合应用皮下免疫HLA-A2转基因小鼠,用酶联免疫斑点实验(ELISpot)检测小鼠脾细胞表位肽特异性细胞免疫应答的水平,流式细胞术检测表位肽特异性的CD8+T细胞比例。结果在检测的4个表位肽中,p248-256诱导HLA-A2转基因小鼠产生的细胞免疫应答最强,HLA-A2-H-2Kb-p248-256四聚体染色进一步表明p248-256免疫后可产生p248-256特异性的CD8+T细胞。结论来源于HCA587的HLA-A2限制性表位肽中,p248-256具有较强的体内免疫原性。
目的:研究染色体核型分析和Y染色体微缺失在男性不育患者检测方法中的应用及结果分析。方法:选取陕西地区无精症、弱精症、少精症等男性不育患者120例,采用多重荧光定量PCR方法对Y染色体AZF的6个标签序列位点进行检测以及采用G显带方法分析其染色体核型。130例健康体检男性作为对照组。结果:120例受检不育患者中,Y染色体基因微缺失11例,检出率9.2% (11/120),其中AZFc区缺乏为10例;对照组130例中检出Y染色体基因微缺失1例,检出率0.8% (1/130),此例为AZFc区缺乏。两组比较,对照组比实验组检出率显著降低,差异有统计学意义(P 0.05)。结论:在陕西地区男性不育患者中,Y染色体AZFc区缺失是最主要的遗传学因素,应提前完善精液常规检查,准确的病因诊断可指导临床医师正确地选择辅助生殖技术。Objective: Application and result analysis of chromosomal karyotype analysis and Y-chromosome microdeletions in the detection of male infertility patients were studied. Methods: A total of 120 male infertility patients with aspermia, asthenozoospermia and oligozoospermia in Shaanxi Province were selected, and the six sequence-tagged sit of Y chromosome AZF were detected by multiplex polymerase chain reaction (PCR) and Cytogenetic analysis was performed with the GTG banding technique. A total of 130 healthy men were treated as the control group. Result: Among 120 infertile patients tested, 11 cases had Y chromosome gene microdeletions, with a detection rate of 9.2% (11/120), including 10 cases with AZFc region deficiency;one case of Y chromosome gene microdeletion was detected in the control group of 130 cases, with a detection rate of 0.8% (1/130). This case is due to AZFc region deficiency. The detection rate of the control group was significantly lower than that of the experimental group, and the difference was statistically significant (P 0.05). Conclusion: In male infertility patients in Shaanxi region, the deletion of the
