背景与目的:EB病毒(Epstein-Barr virus,EBV)感染在鼻咽癌发生中发挥重要作用。本研究的目的在于探讨潜伏的EBV活化后形成的复发感染对鼻咽癌发生过程中全基因组表达的影响。方法:收集EBV阳性(EBV+)/EBV阴性(EBV-)的鼻咽癌靶标基因表达...背景与目的:EB病毒(Epstein-Barr virus,EBV)感染在鼻咽癌发生中发挥重要作用。本研究的目的在于探讨潜伏的EBV活化后形成的复发感染对鼻咽癌发生过程中全基因组表达的影响。方法:收集EBV阳性(EBV+)/EBV阴性(EBV-)的鼻咽癌靶标基因表达谱和EBV复发感染次数不同的鼻咽癌细胞株基因表达谱,通过生物信息学手段对其进行交叉比较,统计学分析筛选出25个差异基因。运用DAVID(database for annotation,visualization and integrated discovery)、pSTIING(protein,signaling,transcriptional interactions and inflammation networks gateway)、GATHER(gene annotation tool to help explain relationships)和TELiS(transcriptionelement listening system)在线分析工具对25个共同差异基因进行表达模式的预测。结果:与EBV初次感染时的基因表达谱比较,仅有DUSP1、TOP1、HOXA9、DEK、IMPDH2、PABPC1等25个基因在EBV复发感染时仍然呈明显差异表达;这25个差异基因及其相关转录因子主要通过2种模式相互作用:一条主要涉及TOP1、DUSP1、DUSP6和RPS28等,另一条是由PITX1、CD9、HOXA9和IMPDH2组成的转录相关环。结论:EBV潜伏后的复发感染,可能通过筛选到的差异基因的2种表达模式发挥功能,最终导致鼻咽癌的发生。展开更多
Objective:To investigate the incidence of human cytomegalo virus(HCMV) in pregnant women.Methods: One hundred and twenty two(122) blood samples and 80 umbilical cord fluids were tested for IgG and IgM respectively usi...Objective:To investigate the incidence of human cytomegalo virus(HCMV) in pregnant women.Methods: One hundred and twenty two(122) blood samples and 80 umbilical cord fluids were tested for IgG and IgM respectively using the enzyme linked immunosorbent assay(ELISA).Results:Of the 122 samples screened for IgG and IgM only 56(47.1%) tested positive for IgG while 63(52.9%) were positive for IgM with 3 samples non-specific.Pregnant women with signs of normal pregnancy made up 60%of the positive results while 20%had a history of ectopic pregnancy and 20%with a history of miscarriages.Of the total of 80 umbilical cord fluids tested,only 59(73.8) tested positive.Eleven of the selected 40 umblical cord fluid was positive to IgG to human cytomegalovirus along with mother and child.Antibody titration result gave diagnostic titre for both IgG and IgM from the 40 umbilical cord fluids.There was a significant relationship between mother,child and umbilical cord fluids(χ~2 = 1.360,CI = 99%,P = 0.568).Conclusion:There could be a possible neonatal infection,and the infection is common among toddlers and children of pre-school age.展开更多
文摘背景与目的:EB病毒(Epstein-Barr virus,EBV)感染在鼻咽癌发生中发挥重要作用。本研究的目的在于探讨潜伏的EBV活化后形成的复发感染对鼻咽癌发生过程中全基因组表达的影响。方法:收集EBV阳性(EBV+)/EBV阴性(EBV-)的鼻咽癌靶标基因表达谱和EBV复发感染次数不同的鼻咽癌细胞株基因表达谱,通过生物信息学手段对其进行交叉比较,统计学分析筛选出25个差异基因。运用DAVID(database for annotation,visualization and integrated discovery)、pSTIING(protein,signaling,transcriptional interactions and inflammation networks gateway)、GATHER(gene annotation tool to help explain relationships)和TELiS(transcriptionelement listening system)在线分析工具对25个共同差异基因进行表达模式的预测。结果:与EBV初次感染时的基因表达谱比较,仅有DUSP1、TOP1、HOXA9、DEK、IMPDH2、PABPC1等25个基因在EBV复发感染时仍然呈明显差异表达;这25个差异基因及其相关转录因子主要通过2种模式相互作用:一条主要涉及TOP1、DUSP1、DUSP6和RPS28等,另一条是由PITX1、CD9、HOXA9和IMPDH2组成的转录相关环。结论:EBV潜伏后的复发感染,可能通过筛选到的差异基因的2种表达模式发挥功能,最终导致鼻咽癌的发生。
文摘Objective:To investigate the incidence of human cytomegalo virus(HCMV) in pregnant women.Methods: One hundred and twenty two(122) blood samples and 80 umbilical cord fluids were tested for IgG and IgM respectively using the enzyme linked immunosorbent assay(ELISA).Results:Of the 122 samples screened for IgG and IgM only 56(47.1%) tested positive for IgG while 63(52.9%) were positive for IgM with 3 samples non-specific.Pregnant women with signs of normal pregnancy made up 60%of the positive results while 20%had a history of ectopic pregnancy and 20%with a history of miscarriages.Of the total of 80 umbilical cord fluids tested,only 59(73.8) tested positive.Eleven of the selected 40 umblical cord fluid was positive to IgG to human cytomegalovirus along with mother and child.Antibody titration result gave diagnostic titre for both IgG and IgM from the 40 umbilical cord fluids.There was a significant relationship between mother,child and umbilical cord fluids(χ~2 = 1.360,CI = 99%,P = 0.568).Conclusion:There could be a possible neonatal infection,and the infection is common among toddlers and children of pre-school age.
