Difference in DRB1~* gene polymorphisms between Han and Uyghur ulcerative colitis patients in China

AIM:To evaluate the association between HLA-DRB1 alleles and Han and Uyghur ulcerative colitis (UC) patients residing in the Xinjiang Uyghur Autonomous Region of China. METHODS:In this study, 102 UC patients (53 Han including 22 men and 31 women, and 49 Uyghur patients including 25 men and 24 women; aged 48.07 ± 15.83 years) and 310 age- and sex-matched healthy controls were enrolled in the Department of Gastroenterology, Xinjiang People’s Hospital of China from January 2010 to May 2011. UC was diagnosed based on the clinical, endoscopic and histological findings following Lennard-Jones criteria. Blood samples were collected and genomic DNA was extracted by routine laboratory methods, and both polymerase chain reaction and gene sequencing were used to identify HLA-DRB1 allele variants. The potential association between genetic varia-tion and UC in Han and Uyghur patients was examined. There were no statistical differences in HLA-DRB1 allele frequencies in Han UC patients. RESULTS:There was no significant difference in the sex ratio between the controls and UC patients (P = 0.740). In Han patients with UC (n = 53), HLA-DRB1 *03 , *13 allele frequencies were lower than in healthy controls (n = 161), but not statistically significant, and HLA-DRB1*04*11*14 allele frequencies were higher than in healthy controls, but without statistical significance. Differences between Uyghur UC patients and the control group were observed for HLA-DRB1*04 and HLA-DRB1*13 , both showed a greater frequency in UC patients (10.21% vs 2.69%, P = 0.043; 14.29% vs 4.03%, P = 0.019). HLA-DRB1*14 also showed a greater frequency in UC patients (14.29% vs 2.69%, P = 0.006). The frequencies of DRB1*04 , *13*14 alleles were increased in Uyghur UC patients compared with normal controls. The frequency of DRB1 * 08 was decreased in Uyghur UC patients compared with normal controls. HLA-DRB1 alleles showed no association with UC in Han patients. There were no statistical differences in HLA-DRB1 allele frequencies in Han UC patients. The frequenci     

早期乳腺癌患者保乳术联合术后放疗与乳房全切术的疗效对比

目的:探讨早期乳腺癌患者保乳术联合术后放疗与乳房全切术的远期疗效。方法:回顾性分析126例保乳手术联合术后放疗与144例乳房全切术治疗早期乳腺癌患者临床病理资料及随访结果,对比两组患者的5年总生存率（overall survival,OS）、无病生存率（disease-free survival,DFS）,采用单因素及多因素Cox回归分析两组患者临床病理资料对局部区域复发（local regional recurrence,LRR）及总生存的影响因素。结果:所有患者中位随访时间(84.890±20.474)个月,两组患者临床病理资料差异均无统计学意义（P>0.05）。保乳组:5年总生存率97.6%,5年无病生存率96.8%;乳房全切术组:5年总生存率97.2%,5年无病生存率97.2%,两组5年总生存率、无病生存率均无差异（P>0.05）。Cox多因素回归分析显示,HER-2过表达与局部区域复发率［HR:3.036(95%CI:1.084~8.504)］及总生存率［HR:3.767(95%CI:1.115~12.727)］均相关。结论:早期乳腺癌患者保乳术联合放疗与乳房全切术在5年总生存率、无病生存率方面无显著差异（P均>0.05）。HER-2过表达是影响早期乳腺癌局部区域复发率及总生存率的独立危险因素。在未来的治疗过程中,更倾向于选择保乳术联合术后放疗对早期乳腺癌患者进行治疗。