目的探讨云南高原地区汉族急性心肌梗死(AMI)患者染色体9p21基因多态性。方法选择500例AMI患者及350例无冠状动脉粥样硬化性心脏病(CAD)患者,采用Sequenom Mass Array系统基因分型观察两者染色体9p21的10个相关位点(rs10757274、rs10811...目的探讨云南高原地区汉族急性心肌梗死(AMI)患者染色体9p21基因多态性。方法选择500例AMI患者及350例无冠状动脉粥样硬化性心脏病(CAD)患者,采用Sequenom Mass Array系统基因分型观察两者染色体9p21的10个相关位点(rs10757274、rs10811656、rs1333042、rs1333048、rs1333049、rs2383206、rs2383207、rs4977574、rs7865618和rs944797)的基因多态性。结果染色体9p21的10个位点中,8个位点(rs10757274、rs10811656、rs1333042、rs1333048、rs1333049、rs2383206、rs4977574和rs7865618)的基因存在多态性变异,基因型在AMI及无CAD患者中均达到遗传平衡(P均>0.01)。rs1333048纯合子CC等位基因的OR为1.52(95%CI:1.05~2.19,P=0.027)。结论染色体9p21基因rs1333048的CC基因型是云南高原地区汉族人群AMI的危险基因型。展开更多
目的探讨冠心病患者9p21染色体位点CDKN2A、CDKN2B、MTAP及ANRIL的表达变化。方法选取冠心病患者30例为病例组,以同期体检的健康人群30例为对照组。采集两组患者空腹抗凝静脉血2 m L,采用实时荧光定量PCR法测定9p21染色体位点CDKN2A、CD...目的探讨冠心病患者9p21染色体位点CDKN2A、CDKN2B、MTAP及ANRIL的表达变化。方法选取冠心病患者30例为病例组,以同期体检的健康人群30例为对照组。采集两组患者空腹抗凝静脉血2 m L,采用实时荧光定量PCR法测定9p21染色体位点CDKN2A、CDKN2B、MTAP和ANRIL的mRNA表达水平,并比较差异。结果与对照组相比,病例组的外周血9p21染色体区域的CDKN2A、CDKN2B mRNA表达水平降低(P均<0.05),MTAP mRNA表达水平升高(P<0.05),ANRIL mRNA表达水平无统计学差异(P>0.05)。结论冠心病患者9p21染色体位点CDKN2A、CDKN2B表达下降,MTAP表达升高。展开更多
Objective: To further refine the extent of deletion on chromosome 9p21-22 in nasopharyngeal carcinoma (NPC) and provide evidence for discovering new tumor suppressor gene. Methods: Loss of heterozygosity (LOH) on chro...Objective: To further refine the extent of deletion on chromosome 9p21-22 in nasopharyngeal carcinoma (NPC) and provide evidence for discovering new tumor suppressor gene. Methods: Loss of heterozygosity (LOH) on chromosome 9p21-22 was analyzed in 25 paired blood and tumor samples by using 11 high-density microsatellite polymorphic markers. Results: 17 of 25 cases (68.0%) showed LOH at one or more loci. Higher frequencies of LOH were found at four loci: D9S161 (35.0%), D9S1678 (31.5%), D9S263 (33.3%) and D9S1853 (33.3%), where 6 cases had a contiguous stretch of allelic loss. Conclusion: The minimal common region of deletion might be defined between D9S161 and D9S1853 (estimated about 2.7 cM in extent) at 9p21.1, suggesting that inactivation of one or more tumor suppressor genes located in this region may be an important step in NPC.展开更多
文摘目的探讨云南高原地区汉族急性心肌梗死(AMI)患者染色体9p21基因多态性。方法选择500例AMI患者及350例无冠状动脉粥样硬化性心脏病(CAD)患者,采用Sequenom Mass Array系统基因分型观察两者染色体9p21的10个相关位点(rs10757274、rs10811656、rs1333042、rs1333048、rs1333049、rs2383206、rs2383207、rs4977574、rs7865618和rs944797)的基因多态性。结果染色体9p21的10个位点中,8个位点(rs10757274、rs10811656、rs1333042、rs1333048、rs1333049、rs2383206、rs4977574和rs7865618)的基因存在多态性变异,基因型在AMI及无CAD患者中均达到遗传平衡(P均>0.01)。rs1333048纯合子CC等位基因的OR为1.52(95%CI:1.05~2.19,P=0.027)。结论染色体9p21基因rs1333048的CC基因型是云南高原地区汉族人群AMI的危险基因型。
基金a grant from the National "863" Project of China (No. 102-10-01-05).
文摘Objective: To further refine the extent of deletion on chromosome 9p21-22 in nasopharyngeal carcinoma (NPC) and provide evidence for discovering new tumor suppressor gene. Methods: Loss of heterozygosity (LOH) on chromosome 9p21-22 was analyzed in 25 paired blood and tumor samples by using 11 high-density microsatellite polymorphic markers. Results: 17 of 25 cases (68.0%) showed LOH at one or more loci. Higher frequencies of LOH were found at four loci: D9S161 (35.0%), D9S1678 (31.5%), D9S263 (33.3%) and D9S1853 (33.3%), where 6 cases had a contiguous stretch of allelic loss. Conclusion: The minimal common region of deletion might be defined between D9S161 and D9S1853 (estimated about 2.7 cM in extent) at 9p21.1, suggesting that inactivation of one or more tumor suppressor genes located in this region may be an important step in NPC.