尿安非他明在不同保存条件下的浓度分析

〔目的〕对在不同保存温度和不同保存时间下检测到尿安非他明浓度进行分析,探寻保存样本的适宜条件。〔方法〕采用酶放大免疫法(EMIT)定量检测尿安非他明在不同保存条件下的浓度,用SPSS统计软件进行分析。〔结果〕在6个月内,(4±2)℃下保存的样本与(—15±2)℃和(—25±2)℃保存的样本浓度有差别;而(—15±2)℃和(—25±2)℃保存的样本浓度无差别;(4±2)℃的样本在此期限内浓度差异较大,而(—15±2)℃和(—25±2)℃样本差异不大。〔结论〕尿安非他明在—10℃以下浓度稳定,可较长时间保存。     

上海口岸归国人员2003～2008年HIV、性病监测结果分析

[目的]通过分析上海口岸归国人员HIV、梅毒感染情况及卫生监管现状,分析国境卫生检疫在传染病控制中的作用.[方法]统计2003～2008年上海口岸归国人员艾滋病、梅毒监测结果及人群分布,并与同期全国相关疾病感染情况比较.[结果]2003～2008年在上海国际旅行卫生保健中心(SITHC)体检的归国人员中,检出HIV感染10例,占全部HIV阳性人数的14.08%;检出梅毒65例,占入境总检出人数的6.03%.该人群艾滋病、梅毒感染率分别为31.71/10万人、206.11/10万人,均超过全国及上海地区人群感染率.[结论]人员跨国流动带来疾病传播危险,归国人员性病、艾滋病感染率高于一般人群,仍为口岸城市及全国艾滋病、性病传播的重要危险因素.需多方联合加强对归国人员的卫生服务和健康监管,进一步加强检验检疫机构与地方疾病预防控制机构的传染病疫情通报工作.     

嗜肺军团菌环介导等温扩增检测方法的建立及应用

目的建立一种灵敏、快速、安全、方便适合口岸现场应用的嗜肺军团菌检测方法。方法分析嗜肺军团菌基因组序列,选择特异性基因片段设计引物,建立环介导等温扩增(loop mediated isothermal amplification,LMAP)方法,并优化反应条件。结果建立的方法特异性好,灵敏度可达103cfu/ml,检测能力与荧光定量PCR法相当。结论应用环介导恒温扩增技术建立的嗜肺军团菌检测方法,灵敏度高,特异性好,适合现场快速检测。     

一种国产HBsAg确认试剂的临床应用评价

Objective To carry out the clinical validation of a domestic HBsAg kit to evaluate its application value. Methods 543 serum samples with HBsAg ELISA values of S/CO ≥ 0. 7 were tested by HBsAg confirmatory test. Specific anti-HBs reagent and control reagent were added separately into duplicate wells of HBsAg ELISA plate, in which test sample was also added. After incubation at 37℃, HBsAg was detected by routine ELISA, and the inhibition rate was calculated using absorbanee (A) result of anti-HBs reagent well and control reagent well according to the provided formula. The sample was confirmed as HBsAg positive when the inhibition rate was≥50%. For HBsAg weakly positive samples, "prolonged confirmatory test" (conjugate reaction time was prolonged to 120 rain) was applied to increase the sensitivity. 39 samples were randomized selected for testing and comparison with Abbott Murex confirmatory test. Results 543 serum samples in total were tested by the confirmatory test. Among the 504 cases which showed positive reaction in screening HBsAg ELISA, 89 ( 17. 7% ) were confirmed as negative. According to their S/CO value of the screening HBsAg test, the ratio of negative cases / tested eases in the group were:S/CO≤<5.0, 87/143 (60. 8% ) ;5.0 < S/CO ≤ 10. 0,0/25 (0) ;10. 0 < S/CO ≤ 15.0, 1/21 (4. 8% ) ;15.0 < S/CO ≤ 20. 0, 1/23 (4. 4% ) ;S/CO 20. 0, 0/292(0). Among 39 cases with negative HBsAg (0. ≤相似文献   

一种国产HBsAg确认试剂的临床应用评价

Objective To carry out the clinical validation of a domestic HBsAg kit to evaluate its application value. Methods 543 serum samples with HBsAg ELISA values of S/CO ≥ 0. 7 were tested by HBsAg confirmatory test. Specific anti-HBs reagent and control reagent were added separately into duplicate wells of HBsAg ELISA plate, in which test sample was also added. After incubation at 37℃, HBsAg was detected by routine ELISA, and the inhibition rate was calculated using absorbanee (A) result of anti-HBs reagent well and control reagent well according to the provided formula. The sample was confirmed as HBsAg positive when the inhibition rate was≥50%. For HBsAg weakly positive samples, "prolonged confirmatory test" (conjugate reaction time was prolonged to 120 rain) was applied to increase the sensitivity. 39 samples were randomized selected for testing and comparison with Abbott Murex confirmatory test. Results 543 serum samples in total were tested by the confirmatory test. Among the 504 cases which showed positive reaction in screening HBsAg ELISA, 89 ( 17. 7% ) were confirmed as negative. According to their S/CO value of the screening HBsAg test, the ratio of negative cases / tested eases in the group were:S/CO≤<5.0, 87/143 (60. 8% ) ;5.0 < S/CO ≤ 10. 0,0/25 (0) ;10. 0 < S/CO ≤ 15.0, 1/21 (4. 8% ) ;15.0 < S/CO ≤ 20. 0, 1/23 (4. 4% ) ;S/CO 20. 0, 0/292(0). Among 39 cases with negative HBsAg (0. ≤相似文献   

上海口岸首例邮轮大规模诺如病毒感染爆发的实验室快速诊断

〔目的〕总结上海出入境检验检疫局快速确认口岸首例邮轮大规模诺如病毒感染疫情的成功经验,完善口岸公共卫生突发事件应急处置体系的建设。〔方法〕在上海口岸,对发生疫情的邮轮通过检疫查验和流行病学调查明确疫情性质后,通过实验室有针对性的系统检测,对邮轮上发生的群体性急性胃肠炎进行快速诊断,从而实施有效的预防控制措施。〔结果〕通过实验室多种方法检测,确认引发急性胃肠炎的病原体为诺如病毒。〔结论〕对口岸首例邮轮大规模诺如病毒感染疫情的快速准确诊断将为口岸公共卫生突发事件应急体系的建设提供宝贵经验。     

连接酶链反应检测男性尿标本中沙眼衣原体

[目的]应用连接酶链反应技术检测男性尿标本中的沙眼衣原体，初步评价其敏感性和特异性。[方法]采集受检者晨起或较长时间（2h以上）不排尿后的首段尿（FVU）标本1131份，利用连接酶链反应技术（LCR）对尿液标本进行沙眼衣原体检测，针对临界值灰区以上的标本进行PCR检测。对LCR和PCR结果相异的标本，用另一LCR试剂进行复检，参照“扩大的金标准”来确定检测结果。[结果]。LCR的敏感性和特异性分别为97．5％和98．4％。[结论]LCR作为一种探针检测技术，是一种既敏感又特异的诊断方法，可避免取尿道标本给患者带来的痛苦，可作为筛检男性沙眼衣原体感染的一种非损伤性方法。     

一种国产HBsAg确认试剂的临床应用评价

Objective To carry out the clinical validation of a domestic HBsAg kit to evaluate its application value. Methods 543 serum samples with HBsAg ELISA values of S/CO ≥ 0. 7 were tested by HBsAg confirmatory test. Specific anti-HBs reagent and control reagent were added separately into duplicate wells of HBsAg ELISA plate, in which test sample was also added. After incubation at 37℃, HBsAg was detected by routine ELISA, and the inhibition rate was calculated using absorbanee (A) result of anti-HBs reagent well and control reagent well according to the provided formula. The sample was confirmed as HBsAg positive when the inhibition rate was≥50%. For HBsAg weakly positive samples, "prolonged confirmatory test" (conjugate reaction time was prolonged to 120 rain) was applied to increase the sensitivity. 39 samples were randomized selected for testing and comparison with Abbott Murex confirmatory test. Results 543 serum samples in total were tested by the confirmatory test. Among the 504 cases which showed positive reaction in screening HBsAg ELISA, 89 ( 17. 7% ) were confirmed as negative. According to their S/CO value of the screening HBsAg test, the ratio of negative cases / tested eases in the group were:S/CO≤<5.0, 87/143 (60. 8% ) ;5.0 < S/CO ≤ 10. 0,0/25 (0) ;10. 0 < S/CO ≤ 15.0, 1/21 (4. 8% ) ;15.0 < S/CO ≤ 20. 0, 1/23 (4. 4% ) ;S/CO 20. 0, 0/292(0). Among 39 cases with negative HBsAg (0. ≤相似文献   

口岸出入境人群梅毒感染检测方法比较

目的探讨适合口岸出入境人群检测梅毒的方法。方法采用国产酶联免疫吸附试验(ELISA)试剂与甲苯胺红不加热血清试验(TRUST)和梅毒螺旋体颗粒凝集试验(TPPA)进行血清学方法比较,采用聚合酶链反应(PCR)对梅毒患者生殖道皮损渗出液进行检测,分析其传染性。结果国产ELISA试剂与TPPA检测结果阳性符合率为96%(263/273),2种方法对273例标本的检测结果差异无统计学意义。而TRUST和TPPA检测结果差异有统计学意义,与ELISA检测结果差异亦有统计学意义。PCR检测29例梅毒患者生殖道皮损渗出液和100例初筛阳性血清标本,生殖道皮损渗出液与临床诊断符合率为100%,血清检测结果均为阴性。结论ELISA可替代TRUST和TPPA作为梅毒感染的筛查方法。PCR不能作为出入境人员梅毒传染性判断的方法。     

实时荧光定量聚合酶链反应检测沙门菌(A～F群)方法的建立和应用

目的建立实时荧光定量聚合酶链反应(PCR)检测沙门菌,评价其优越性。方法根据沙门菌保守的H ilA基因序列合成引物和探针,建立快速检测沙门菌的实时荧光定量PCR。结果所建立的实时荧光定量PCR具有简便、快速、敏感性高、特异性强、抗干扰性好和可重复性强等特点,与实际应用检测结果相符。结论建立的实时荧光定量PCR可用于口岸食品和公共场所从业人员的沙门菌检测。