Allelic alterations of STRs in archival paraffin embedded tissue as DNA source for paternity testing

Owing to a wrong name registered on ID card, the identity of a businessman who had been dead and cremated was suspected, which led his son failed to get legacy. In order to prove the parenthood, the son submitted the gastric cancer tissues surgically removed and embedded in a paraffin block as DNA source for paternity test. After extracting DNA with QIAamp DNA Blood Mini Kit, the 16 STR loci was amplified by two commercial kits of Sinofiler^® (ABI)and Powerplex 16 (Promega), respectively. Both of the STR profiles were similarly showing allelic imbalance pattern at some loci and an additional allele at locus D18S51. The cancerous tissues and adjacent normal tissues were then partitioned off from each other by microscopic analysis of H.E. stained sections and followed by DNA extracting and STR typing, respectively. The allelic alteration could not be found in normal tissues whereas it did in cancerous tissues whose STR profile showed complete loss of one allele (LOH) at loci D13S317 (allele 11 was lost), partial loss of one allele (pLOH) at loci D21S11, D7S820, D19S433, vWA, D12S391 and Amelogein and occurrence of an additional allele (allele 20 was added) at locus D18S51. The results demonstrated that the Paraffin Embedded cancer Tissue used as DNA source for forensic identification is possibly questionable because of their microsatellite instability (MSI) or loss of heterozygosity. It was suggested to partition the normal tissues from the cancer tissues by microscopic evaluation first and then analyzing DNA separately. Comparing the STRs profile of normal tissue with the son's blood sample, the final conclusion was acquired that the donor of the paraffin embedded tissues is the biological father of the son.     

损伤皮肤创缘白蛋白、总蛋白含量测定与损伤时间推断

本文利用生化自动分析仪,快速检测大白鼠背部皮肤剪创创缘组织中白蛋白、总蛋白含量。结果发现,生前各损伤时间组创缘中白蛋白、总蛋白含量明显升高;升高的程度与损伤时间有关。死后损伤各组白蛋白、总蛋白值与正常对照皮肤比较无显著差异。这表明生化自动分析仪检测损伤皮肤白蛋白、总蛋白含量的方法对于推断损伤时间具有一定的参考价值。     

小鼠皮肤损伤后时序芯片数据分析及关键基因的筛选

目的 应用生物信息学方法对皮肤损伤后不同时间点的差异表达基因(differentially expressed genes,DEGs)进行分析,为法医学皮肤损伤时间推断(wound age estimation)提供理论依据.方法 从基因表达综合数据库(gene expression omnibus,GEO)下载基因芯...     

补肾活血法联合西药治疗骨转移癌疼痛25例

目的 观察补肾活血法联合西药治疗骨转移癌疼痛的疗效和安全性。方法 将50例骨转移癌疼痛患者按随机数字表法分为两组,对照组（25例）采用盐酸羟考酮缓释片联合唑来膦酸注射液治疗,治疗组（25例）在对照组基础上加用补肾活血法组方的中药,观察比较两组患者疼痛、骨转移病灶疗效,生活质量,骨转移无进展时间,骨转移后总生存时间（bone metastasis-overall survival,BM-OS）及不良反应。结果 治疗组疼痛、骨转移病灶疗效均优于对照组（P<0.05）。治疗后两组患者生活质量均较治疗前明显改善（P<0.05）,其中日常活动、情绪、人际关系和睡眠方面与对照组比较,治疗组患者改善更明显,差异均具有统计学意义（P<0.05）。治疗后治疗组骨转移无进展时间及BM-OS均较对照组延长,差异有统计学意义（P<0.05）。两组不良反应均可耐受。结论 补肾活血法联合西药治疗骨转移患者,具有更好的止痛、改善生活质量、延长无进展时间及生存期的作用。     

奇正伤湿止痛膏对大鼠皮肤角质层影响的实验研究

目的探讨奇正伤湿止痛膏用药期间和停止用药后对大鼠皮肤角质层超微结构的影响。方法选用10周龄Wistar大鼠，在其背部两侧皮肤涂抹含伤湿止痛膏药物的浸膏和不合药的对照膏剂，应用电子显微镜观察该药剂引起的皮肤角质层超微结构的变化。结果与对照膏剂比较，涂药4～12h后表皮角质层开始变薄，细胞间距增大，细胞结构变得比较疏松，外层细胞有脱落。1d后，角质层疏松减轻，细胞间距缩小。停药后第1天，表皮角质层细胞间距变小。停药3d后，表皮角质层已基本恢复正常。结论该膏剂主要通过降低皮肤角质层的屏障作用，促进药物透皮吸收效率。停止用药后表皮角质层变化可短时间内恢复正常。