AIM: Tumor endothelial markers (TEMs) are a newly discovered family of endothelial markers associated with tumor specificangiogenesis. This study sought to examine the levels of expression (qualitatively and quantitat...AIM: Tumor endothelial markers (TEMs) are a newly discovered family of endothelial markers associated with tumor specificangiogenesis. This study sought to examine the levels of expression (qualitatively and quantitatively)for TEMs in human colon cancer.METHODS: Human colorectal cancer tissues (n = 48)and normal background tissues (n = 31) were obtained after surgery. RNA was extracted from frozen sections for gene amplification. The expression of TEMs (TEM-1to TEM-8) was assessed using RT-PCR and their transcript levels were determined using real-time-quantitative PCR(Q-RT-PCR).RESULTS: TEM-1 (P = 0.01), TEM-7 (P = 0.04), TEM-7R(P= 0.03), TEM-8 (P = 0.001) significantly raised in colon cancer tissues compared with the levels detected in normal background tissues. The expressions of TEM-2 and TEM-6were found to be not significantly different between tumor tissues and normal tissues (P＞0.05). Patients who had cancer penetrating into and through the muscularis propria of the bowel wall and developed nodal involvement(Dukes C) exhibited significantly higher levels of TEM -8compared to patients who were node negative (P＜0.05).TEM-7 and TEM-7R showed high level of transcripts in Dukes C, but they were not statistically significant.CONCLUSION: The level of the expression of TEM-1,TEM-7, TEM-7R and TEM-8 (but not TEM-2 and TEM-6)were associated with both nodal involvement and disease progression, and may therefore, have a prognostic value in colorectal cancer.展开更多
目的明确我院分离的流感嗜血杆菌(HI)氨苄西林耐药的基因。方法用 E 试验测定我院上呼吸道感染患儿鼻咽部分离300株 HI 对氨苄西林耐药情况;以 Nitrocefin 纸片检测β内酰胺酶;PCR 扩增及序列分析确定产酶株的基因型。结果31株氨苄西林...目的明确我院分离的流感嗜血杆菌(HI)氨苄西林耐药的基因。方法用 E 试验测定我院上呼吸道感染患儿鼻咽部分离300株 HI 对氨苄西林耐药情况;以 Nitrocefin 纸片检测β内酰胺酶;PCR 扩增及序列分析确定产酶株的基因型。结果31株氨苄西林耐药株均产β内酰胺酶,占总菌株数11%(32/300),PCR 检测出 TEM-1 31株,ROB-1 1株。结论产β内酰胺酶是 HI 对氨苄西林耐药的重要机制,TEM-1型是β内酰胺酶主要基因型,ROB-1型β内酰胺酶也首次被检出,值得关注和长期监测。展开更多
文摘AIM: Tumor endothelial markers (TEMs) are a newly discovered family of endothelial markers associated with tumor specificangiogenesis. This study sought to examine the levels of expression (qualitatively and quantitatively)for TEMs in human colon cancer.METHODS: Human colorectal cancer tissues (n = 48)and normal background tissues (n = 31) were obtained after surgery. RNA was extracted from frozen sections for gene amplification. The expression of TEMs (TEM-1to TEM-8) was assessed using RT-PCR and their transcript levels were determined using real-time-quantitative PCR(Q-RT-PCR).RESULTS: TEM-1 (P = 0.01), TEM-7 (P = 0.04), TEM-7R(P= 0.03), TEM-8 (P = 0.001) significantly raised in colon cancer tissues compared with the levels detected in normal background tissues. The expressions of TEM-2 and TEM-6were found to be not significantly different between tumor tissues and normal tissues (P＞0.05). Patients who had cancer penetrating into and through the muscularis propria of the bowel wall and developed nodal involvement(Dukes C) exhibited significantly higher levels of TEM -8compared to patients who were node negative (P＜0.05).TEM-7 and TEM-7R showed high level of transcripts in Dukes C, but they were not statistically significant.CONCLUSION: The level of the expression of TEM-1,TEM-7, TEM-7R and TEM-8 (but not TEM-2 and TEM-6)were associated with both nodal involvement and disease progression, and may therefore, have a prognostic value in colorectal cancer.
文摘目的明确我院分离的流感嗜血杆菌(HI)氨苄西林耐药的基因。方法用 E 试验测定我院上呼吸道感染患儿鼻咽部分离300株 HI 对氨苄西林耐药情况;以 Nitrocefin 纸片检测β内酰胺酶;PCR 扩增及序列分析确定产酶株的基因型。结果31株氨苄西林耐药株均产β内酰胺酶,占总菌株数11%(32/300),PCR 检测出 TEM-1 31株,ROB-1 1株。结论产β内酰胺酶是 HI 对氨苄西林耐药的重要机制,TEM-1型是β内酰胺酶主要基因型,ROB-1型β内酰胺酶也首次被检出,值得关注和长期监测。
