AIM: To study anti-Epstein-Barr virus(EBV) Ig G antibodies in Crohn′s disease in relation to treatment, immune cells, and prior tonsillectomy/appendectomy.METHODS: This study included 36 CD patients and 36 healthy in...AIM: To study anti-Epstein-Barr virus(EBV) Ig G antibodies in Crohn′s disease in relation to treatment, immune cells, and prior tonsillectomy/appendectomy.METHODS: This study included 36 CD patients and 36 healthy individuals(controls), and evaluated different clinical scenarios(new patient, remission and active disease), previous mucosa-associated lymphoid tissue removal(tonsillectomy and appendectomy) and therapeutic regimens(5-aminosalicylic acid, azathioprine, anti-tumor necrosis factor, antibiotics, and corticosteroids). T and B cells subsets in peripheral blood were analyzed by flow cytometry(markers included: CD45, CD4, CD8, CD3, CD19, CD56, CD2, CD3, TCRαβ and TCRγδ) to relate with the levels of anti-EBV Ig G antibodies, determined by enzyme-linked immunosorbent assay.RESULTS: The lowest anti-EBV Ig G levels were observed in the group of patients that were not in a specific treatment(95.4 ± 53.9 U/m L vs 131.5 ± 46.2 U/m L, P = 0.038). The patients that were treated with 5-aminosalicylic acid showed the highest anti-EBV Ig G values(144.3 U/m L vs 102.6 U/m L, P = 0.045). CD19+ cells had the largest decrease in the group of CD patients that received treatment(138.6 vs 223.9; P = 0.022). The analysis of anti-EBV Ig G with respect to the presence or absence of tonsillectomy showed the highest values in the tonsillectomy group of CD patients(169.2 ± 20.7 U/m L vs 106.1 ± 50.3 U/m L, P = 0.002). However, in the group of healthy controls, no differences were seen between those who had been tonsillectomized and subjects who had not been operated on(134.0 ± 52.5 U/m L vs 127.7 ± 48.1 U/m L, P = 0.523).CONCLUSION: High anti-EBV Ig G levels in CD are associated with 5-aminosalicylic acid treatment, tonsillectomy, and decrease of CD19+ cells.展开更多
目的：比较3种丙型肝炎病毒（HCV）RNA荧光定量PCR检测试剂的临床应用性能。方法采用国产 A 试剂（磁珠分离法）、国产 B 试剂（荧光探针法）和目前国际临床广泛应用的 C试剂（内标法）同时检测110例丙型肝炎患者临床血液样本及梯度稀...目的：比较3种丙型肝炎病毒（HCV）RNA荧光定量PCR检测试剂的临床应用性能。方法采用国产 A 试剂（磁珠分离法）、国产 B 试剂（荧光探针法）和目前国际临床广泛应用的 C试剂（内标法）同时检测110例丙型肝炎患者临床血液样本及梯度稀释的强阳性标本，从试剂间的相关性、检测灵敏度、特异度等对结果进行对比分析。结果A 和 B、A 和 C、B 和 C 试剂间的相关系数分别为0．845、0．917、0．860（P 均＜0．01）。在3种方法均有数值的58例标本中，3种试剂所检出的 HCV RNA 水平比较差异无统计学意义（P ＞0．05）。但在低病毒载量（＜103 IU ／ml）组中，3种试剂灵敏度比较差异有统计学意义（P ＜0．01），C 试剂灵敏度最高，A 试剂次之，B 试剂最低。当病毒载量在2．00＆#215;103～2．00＆#215;106 IU ／ml 时，3种试剂的定量结果与理论值均有很好的相关性与重复性，其检测浓度的平均值与理论浓度的双对数线性相关系数分别为0．9983、0．9823、0．9999（P 均＜0．01）；当病毒载量为2．00＆#215;102 IU ／ml 时，C 试剂的检测结果最接近，A 试剂次之，B 试剂未能检出。结论C 试剂作为国际上广泛应用于临床 HCV RNA 定量检测的试剂，优势明显；国产 A 试剂总体性能优于 B 试剂，且费用较国外试剂低廉，性价比较高。展开更多
文摘AIM: To study anti-Epstein-Barr virus(EBV) Ig G antibodies in Crohn′s disease in relation to treatment, immune cells, and prior tonsillectomy/appendectomy.METHODS: This study included 36 CD patients and 36 healthy individuals(controls), and evaluated different clinical scenarios(new patient, remission and active disease), previous mucosa-associated lymphoid tissue removal(tonsillectomy and appendectomy) and therapeutic regimens(5-aminosalicylic acid, azathioprine, anti-tumor necrosis factor, antibiotics, and corticosteroids). T and B cells subsets in peripheral blood were analyzed by flow cytometry(markers included: CD45, CD4, CD8, CD3, CD19, CD56, CD2, CD3, TCRαβ and TCRγδ) to relate with the levels of anti-EBV Ig G antibodies, determined by enzyme-linked immunosorbent assay.RESULTS: The lowest anti-EBV Ig G levels were observed in the group of patients that were not in a specific treatment(95.4 ± 53.9 U/m L vs 131.5 ± 46.2 U/m L, P = 0.038). The patients that were treated with 5-aminosalicylic acid showed the highest anti-EBV Ig G values(144.3 U/m L vs 102.6 U/m L, P = 0.045). CD19+ cells had the largest decrease in the group of CD patients that received treatment(138.6 vs 223.9; P = 0.022). The analysis of anti-EBV Ig G with respect to the presence or absence of tonsillectomy showed the highest values in the tonsillectomy group of CD patients(169.2 ± 20.7 U/m L vs 106.1 ± 50.3 U/m L, P = 0.002). However, in the group of healthy controls, no differences were seen between those who had been tonsillectomized and subjects who had not been operated on(134.0 ± 52.5 U/m L vs 127.7 ± 48.1 U/m L, P = 0.523).CONCLUSION: High anti-EBV Ig G levels in CD are associated with 5-aminosalicylic acid treatment, tonsillectomy, and decrease of CD19+ cells.
