目的:探讨西南地区雌激素受体α（estrogen receptor α，ERα）基因多态性与原性肝癌关系。方法:选择西南地区100名原发性肝癌患者为实验组，100名非肝病人群作为对照组。应用分子生物学的方法分析PvuⅡ，XbaⅠ限制性片段长度多态性（restriction fragment length polymorphism，RFLP）。同时对人雌激素受体基因上游的短串联重复序列（short tandem repeat，STR）进行纯化、克隆和序列分析，观察ERα基因多态性基因型在实验组与对照组中的基因型分布。结果:PvuⅡ和XbaⅠ限制性片段长度多态性在两组中均呈多态性分布。病例组TA13等位基因频率高于对照组，差异有显著性，TA15等位基因频率低于对照组，差异有显著性。结论:ERα基因多态性与原性肝癌有关，X等位基因可能是其危险因素，P等位基因可能是其保护因素，TA13等位基因可能是其危险因素，TA15等位基因可能是其保护因素。
OBJECTIVE: To evaluate the result of clinical application in the repair of coracoclavicular ligament injury by tissue engineered tendon using the technique of short tandem repeat loci examination. METHODS: In september 1999, human embryonic tendon cells and artificial materials were co-cultured in vitro to construct tissue engineered tendon, which repaired coracoclavicular ligament injury. After 6 months of operation, micro-tissue were sampled during the operation of removal of internal fixation, and morphological characteristics were examined by HE staining, DNA of tissues were extracted to examine D3S1754 and Cyar04 gene loci. RESULTS: The shoulder function of the patient was recovered well after operation, and no local or systemic immunological rejection were occurred. The electrophoresis typing showed 13/14 at D3S1754 and 8/9 at Cyar04 in the tissue of tissue engineered tendon, while the autogenous ligament were 13/13 and 8/8 at D3S1754 and Cyar04 loci respectively, which suggested that the tissue engineered tendon was survived in vivo. CONCLUSION: The examination of short tandem repeat loci is a better index to evaluate the survival situation of tissue engineered tissue after transplantation in clinical application.
【摘要】 目的 对四川人群的13个短串联重复(short tandem repeat,STR)基因座进行遗传多态性调查。方法 310份血样采自四川地区无血缘关系个体。Chelex法提取DNA,PCR复合扩增,自动基因分析仪电泳收集电泳结果数据,基因分型软件进行样本基因型分型。结果 13个STR基因座的基因型分布符合HardyWeinberg平衡。累计非父排除率和累计个人识别率为0.999 991 728和gt;0.999 999 999。结论 上述13个STR基因座的累计非父排除率和累计个人识别率较高,适合作为四川人群的遗传标记,用于法医学亲权鉴定和个体识别等领域的研究。