目的探讨乙型肝炎病毒DNA(Hepatitis B virus DNA,HBV-DNA)、乙型肝炎病毒基因型(Hepatitis B virus genotype,HBV-GT)、乙型肝炎病毒e抗原(Hepatitis B virus e antigen,HBeAg)、乙型肝炎病毒耐药位点(HBV-resistance mutation sites,H...目的探讨乙型肝炎病毒DNA(Hepatitis B virus DNA,HBV-DNA)、乙型肝炎病毒基因型(Hepatitis B virus genotype,HBV-GT)、乙型肝炎病毒e抗原(Hepatitis B virus e antigen,HBeAg)、乙型肝炎病毒耐药位点(HBV-resistance mutation sites,HBV-RMS)检测在母婴传播阻断中的价值。方法收集十堰市人民医院(湖北医药学院附属人民医院)2015年1月-2018年2月718例妊娠期和备孕期HBV携带者、慢性乙型肝炎(Chronic hepatitis B,CHB)、肝功能衰竭患者,计划实施母婴传播阻断者。检测HBV-DNA、HBeAg、HBV-GT、HBV-RMS、肝功能、凝血功能。将全部病例分为HBV-GT B组、HBV-GT C组,统计两组高HBV-DNA(HBV-DNA≥1+E005 IU/ml)患者数、HBV-RMS患者数、HBeAg阳性患者数、CHB患者数、慢加急性肝功能衰竭(Acute chronic liver failure,ACLF)患者数。结果(1)HBV-GT:HBV-GT B 490例(68.25%),HBV-GT C 212例(29.53%),HBV-GT D 4例(0.56%),HBV-GT B+C 8例(1.11%),HBV-GT C+D 4例(0.55%)。(2)HBV-RMS:检出6例HBV-RMS患者(0.84%),妊娠早期、妊娠中期、妊娠晚期各2例;ACLF 1例,CHB 5例;HBV-GT B患者1例、HBV-GT C患者5例(χ2=5.8874,P=0.0153)。(3)HBV-DNA和HBeAg:HBV-GT B高病毒载量288例(58.77%)、HBV-GT C高病毒载量149例(70.28%),差异有统计学意义(χ2=9.2227,P=0.0024)。HBV-GT B患者HBeAg阳性308例(62.86%);HBV-GT C患者HBeAg阳性155例(73.11%),差异有统计学意义(χ2=7.8298,P=0.0051)。(4)CHB患者:CHB患者127例(17.89%);HBV-GT B患者68例(13.65%)、HBV-GT C患者59例(27.83%),差异有统计学意义(χ2=19.3901,P=0.0091);经抗病毒、护肝治疗恢复正常。结论高HBV-DNA、HBeAg阳性是母婴传播危险因素,HBV-GT C是病毒耐药的危险因素。在HBV-DNA、HBeAg、HBV-GT、HBV-RMS检测指导下,可提高HBV母婴传播阻断技术成功率和安全性。展开更多
Aim:To assess the efficacy and limitation of free/total prostate-specific antigen ratio(f/tPSA)at a single institution in Japan,focusing on the avoidance of pointless prostate biopsies.Methods:In total,631 men between...Aim:To assess the efficacy and limitation of free/total prostate-specific antigen ratio(f/tPSA)at a single institution in Japan,focusing on the avoidance of pointless prostate biopsies.Methods:In total,631 men between 44 and 93 years old(mean 69.8 years)with elevated PSA underwent power-Doppler ultrasoundgraphy-guided transrectal 10-core prostate biopsies at Niigata Cancer Center Hospital,and their histological features were investigated with total PSA (tPSA)and f/tPSA.Results:PCa was detected in 126 of 134 patients(94.3%)with tPSA of 26 ng/mL or higher.The detection rate was 59.4% for tPSA of 21-25 ng/mL,followed by 39.2% for 16-20 ng/mL,30.0% for 11-15 ng/mL, 20.0% for 4.1-10 ng/mL and 7.6% for≤4.0 ng/mL,f/tPSA of the PCa group was significantly lower than that of non-malignamt disorders in any tPSA ranges(mean 0.122 vs.0.160,P<0.001).Receiver-operating characteristics analyses showed that f/tPSA(AUC:0.664)performed more valuably than tPSA(AUC:0.559)in patients with tPSA between 3.0-10 ng/mL(P<0.01).Although f/tPSA of 0.250 for the cut-off value might miss 1.8% PCa patients,it potentially spares 9.2% of unnecessary biopsies.Conclusion:f/tPSA is more valuable compared with tPSA alone for the prediction of the occurrence of PCa.We recommend 0.250 as the cut-off value for f/tPSA in PCa screening for Asian men having so-called grey-zone tPSA.(Asian J Androl 2006 Jul;8:429-434)展开更多
文摘使用大肠杆菌偏好性密码子人工合成了猪传染性胃肠炎病毒(TGEV)S蛋白C和D抗原位点多肽基因序列。依次将C和D抗原位点多肽基因序列克隆至表达载体p ET-32a中。将重组质粒转化大肠杆菌Rosetta(DE3),经IPTG诱导表达,收集诱导的菌液进行SDS-PAGE电泳和Western Blot分析。结果显示,在分子量25 k Da处有1条明显的蛋白表达条带,且能被TGEV阳性血清识别。本研究为TGEV的血清学检测方法的建立提供了必要的物质基础。
文摘Aim:To assess the efficacy and limitation of free/total prostate-specific antigen ratio(f/tPSA)at a single institution in Japan,focusing on the avoidance of pointless prostate biopsies.Methods:In total,631 men between 44 and 93 years old(mean 69.8 years)with elevated PSA underwent power-Doppler ultrasoundgraphy-guided transrectal 10-core prostate biopsies at Niigata Cancer Center Hospital,and their histological features were investigated with total PSA (tPSA)and f/tPSA.Results:PCa was detected in 126 of 134 patients(94.3%)with tPSA of 26 ng/mL or higher.The detection rate was 59.4% for tPSA of 21-25 ng/mL,followed by 39.2% for 16-20 ng/mL,30.0% for 11-15 ng/mL, 20.0% for 4.1-10 ng/mL and 7.6% for≤4.0 ng/mL,f/tPSA of the PCa group was significantly lower than that of non-malignamt disorders in any tPSA ranges(mean 0.122 vs.0.160,P<0.001).Receiver-operating characteristics analyses showed that f/tPSA(AUC:0.664)performed more valuably than tPSA(AUC:0.559)in patients with tPSA between 3.0-10 ng/mL(P<0.01).Although f/tPSA of 0.250 for the cut-off value might miss 1.8% PCa patients,it potentially spares 9.2% of unnecessary biopsies.Conclusion:f/tPSA is more valuable compared with tPSA alone for the prediction of the occurrence of PCa.We recommend 0.250 as the cut-off value for f/tPSA in PCa screening for Asian men having so-called grey-zone tPSA.(Asian J Androl 2006 Jul;8:429-434)
