黄芪水煎液抗I型单纯疱疹病毒的实验研究

目的 研究黄芪抗I型单纯疱疹病毒(HSV—I)的作用。方法 在人胚肺二倍体细胞系统中，采用对病毒所致细胞病变的抑制实验，观察黄芪水煎液抗HSV—I的药效。结果黄芪水煎液的半数抑制浓度为0．98μg/ml，最小有效浓度为1．95μg/ml，治疗指数为128。结论 黄芪有较显著的抗HSV—I作用，且对细胞毒性低。     

西宁地区妇女生殖器单纯疱疹病毒感染与宫颈癌关系初探

本文应用细胞培养观察细胞病变的方法来分离病毒，再用单克隆抗体及荧光抗体对病毒进行分型，在西宁地区1016例妇科疾病所取标本中（包括宫颈炎，外阴炎，阴道炎及宫颈癌等），共发现单纯疱疹病毒（HSV）阳性标本72例，阳性率为7．08％，而宫颈癌中阳性率最高为8．7％。阳性病例中HSV—1到占利31．0％，2型占68．1％，宫颈癌阳性病例均为HSV－2型，说明HSV－2型感染与宫颈癌有关。     

干扰素对病毒性宫颈炎的超微结构改变

应用聚合酶链反应技术（PCR）对慢性宫颈炎病人的子宫颈分泌物拭子标本进行人乳头瘤病毒（HPV）、单纯疱疹病毒（HSV）、巨细胞病毒（CMV）的DNA检测，对阳性病人采用干扰素阴道灌注治疗，临床观察总有效率达89％。选择其中10例进行电子显微镜观察，结果有7例细胞超微结构明显恢复正常，其余3例也有一定疗效，提示干扰素治疗病毒性宫颈炎疗效显著。     

膦甲酸钠对九种病毒的体外抑制作用

本文观察了膦甲酸钠对人胚肾细胞、人胚肺二倍体细胞、Hep-2细胞及A549细胞等的细胞毒作用,结果表明本品对这些细胞毒性极小。在此基础上,根据国外有关文献报道,挑选了九种对膦甲酸钠敏感或不敏感的DNA病毒和RNA病毒,用病毒细胞病变抑制法,研究膦甲酸钠在体外对这些病毒的抑制作用,结果表明膦甲酸钠对HSV—1、HSV—2、CMV、EBV等疱疹类病毒具有明显的抑制作用,特别是对单纯疱疹病毒的作用最为显著,37.8～42μmol/ml即可抑制HSV和100个TCID_(50)的50%细胞病变。     

通用引物检测宫颈脱落细胞中病毒的临床应用

目的：探讨通用引物检测多种病毒的PCR方法。方法：应用聚合酶链反应-酶谱法（PCR－EC）和疱疹病毒通用引物,检测宫颈脱落细胞单纯疱疾病毒Ⅰ型（HSV—Ⅰ）、单纯疱疹病毒Ⅱ型（HSV—Ⅱ）、爱泼期坦—巴尔病毒（EBV）和人5细胞病毒（HCMV）。结果：健康人（20例）和宫颈糜烂患者（34例）。HCMV阳性检出率分别为10．0％和41．2％,两者差异显著（P＜0．05）;HSV—Ⅰ分别为5．O％和及14．7％;HSV—Ⅱ分别为1l％和20．6％;FBV分别为15．0％和17．6％;可检测到1fg的DNA。结论：通用引物PCR－EC检测HCMV、HSVⅠ、HSVⅡ、EBV,具有敏感、特异、便捷、快速、经济的特点,对病毒感染早期快速诊断及流行病学研究提供了科学的方法。     

单纯疱疹病毒抗原ELISA分型检测的临床意义

目的 探讨单纯疱疹病毒与生殖器炎症的关系。方法 对259例单纯疱疹病毒患者的分泌物标本采用单克隆抗体ELISA(McAb—ELISA)双抗体夹心法进行HSV—1和HSV—2型特异性病毒抗原测定。结果 249例生殖器炎症标本中HSV—2Ag的阳性检出率为10．04％。其中宫颈糜烂Ⅲ度和Ⅳ度的标本中HSV—2Ag的检出率分别是2．74％和14．29％。滴虫性和霉菌性阴道炎的HSV—2Ag的检出率分别为32．00和20．00％，而另外10例CSF和面部疱疹标本仅检出2例HSV—1Ag阳性。结论 HSV—2不仅是引起女性生殖器炎症的重要病因，还与妇女生殖道的病变程度密切相关。     

用原代幼兔肾细胞以HSV-1为攻击病毒的干扰法分离风疹病毒

本文对临床诊断为风疹的19例患儿采集了咽拭标本,用原代兔肾细胞以HSV—1为攻击病毒的干扰法分离风疹病毒,结果有9份干扰阳性,并将其分别移种于RK_(13)细胞,皆呈现与标准毒种Gos—1C株相同的细胞病变。相反,所有干扰阴性材料移种RK_(13)细胞皆未见细胞病变。取干扰阳性五株用干扰法做中和试验,表明可被风疹病毒标准株Gos-10株及Judith株的特异血清所中和,证明皆属于风疹病毒。     

ELISA快速检测单纯疱疹病毒抗原

用ELISA双抗体夹心法检测65份不同来源临床标本中HSV抗原,其结果分别与病毒分离和间接免疫荧光法(IFA)进行比较。病毒分离的阳性率为40％(26/65),接种后72h内出现典型细胞病变的占53.85％(14/26)。34份临床标本同时做IFA检测,阳性率为38.2％(13/34)。ELISA检测的阳性率为35.4％(23/65),与病毒分离和IFA结果的符合率分     

其它

170.桧的抗疱疹剂桧(Juniperux communis)及其亲缘植物长期作药用,其浆果和嫩枝尤为适宜。作者精选DNA 病毒群的单纯疱疹病毒Ⅰ型(HSV—1)作为研究模型,在原生的人羊膜细胞培养中由 HSV—1引起的破坏证明是以细胞破损的形式亦即所谓致细胞病变效应(CPE),若把阻碍病毒复制的物质     

抗HIV植物蛋白MAP30等药物的体外抗单纯疱疹病毒作用

目的 :研究抗人类免疫缺陷病毒 (HIV)植物蛋白MAP30、无环鸟苷 (ACV)、α 干扰素 (IFN α)及叠氮胸苷(AZT)等药物对单纯疱疹病毒 (HSV)的体外抑制作用。　方法 :以Vero细胞为靶细胞 ,观察药物作用 4 8h后对HSV致细胞病变的抑制作用 ,并采用ELISA法测定药物对培养上清HSV 1和HSV 2抗原分泌的抑制作用。　结果 :MAP30和ACV均可使HSV的致细胞病变效应减轻。MAP30对HSV 1和HSV 2抗原分泌的 5 0 %抑制浓度 (IC50 )分别是 0 .5 μmol L和 0 .4 μmol L ,ACV分别是 2 .8μmol L和 2 .2 μmol L ,而IFN α和AZT对HSV无明显抑制作用。　结论 :MAP30除具有抗HIV活性外 ,还具有抗HSV的作用。     

猪脾细胞干扰素在细胞中对疱疹病毒的抑制作用

目的:体外评价猪脾细胞干扰素抗疱疹病毒的活性,为疱疹病毒感染寻找新的治疗手段。方法:主要通过观察细胞病变效应(CPE)、噻唑蓝(MTT)比色法检测细胞存活率和病毒抑制率来评价猪脾细胞干扰素体外对单纯疱疹病毒1型(HSV-1)和2型(HSV-2)的抑制作用。结果:猪脾细胞干扰素对HeLa细胞的半数毒性浓度(TC50)为535.3 IU/ml,对HSV-1和HSV-2的半数有效浓度(IC50)分别为24.6×103IU/L和25.9×103IU/L,治疗指数(TI)为21.8和20.7;其抗病毒效果与人白细胞干扰素及喷昔洛韦一致。结论:猪脾细胞干扰素具有很好的体外抗疱疹病毒作用。     

风疹病毒的分离

自24例风疹症状典型的患儿咽拭中,经PRK细胞盲传后转种至RK_(13)及BhK_(21)细胞上出现明显的细胞病变,在MK_2细胞上对HSV-1型病毒攻击呈干扰现象者为阳性,分离出6株风疹病毒,命名为济南风疹病毒JRV_5、JRV_(11)、JRV_(13)、JRV_(18)JRV_(20)及JRV_(23)。     

Partial Sequence Analysis of the Genome of Human Herpesvirus 7 YY5 Isolated from Saliva Samples

Objective To isolate and identify Nanjing local strains of Human Herpesvirus 7 (HH-V-7), and to analyze their partia l genome characteristic. Methods The saliva specimens were collected from 2 healthy adults and 5 children with kidney disease. After treatment with antibiotics and filtering. they were inoculated on to the phytohemagglutin stimulated umbilical cord blood mononuclear cells ( CBMCs). When the infected cells presented the typical ballooning and polykaryotic cytopathic effects (CPE), we identified them by transvnission electron microscopy and polymerase chain reaction.PCR product was also sequenced. Results Four strains were isolated from the seven saliva specimens. The 186-base-pair fragment of the isolated strain YY5 PCR products was sequenced, which encoded part of the HHV-7 U10 gene. The DNA sequence revealed an identity of 57. 5% and 36.0%, respectively with HHV-6 and human cytomegalovirus ( HCMV). At the amino acid level, the similarity of 51.6% was found between HHV-7 and HHV-6, and that of 25.8% between HHV-7and HCMV. Conclusion The isolated viruses were HHV-7, and 186 bp fragments revealed an identity with HHV-7 RK and Jl of 100%.     

Partial Sequence Analysis of the Genome of Human Herpesvirus 7 YY5 Isolated from Saliva Samples

Ｈｕｍａｎｈｅｒｐｅｓｖｉｒｕｓ 7(ＨＨＶ 7)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｒｅｃｅｎｔｌｙｄｉｓｃｏｖｅｒｅｄｍｅｍｂｅｒｏｆｔｈｅｈｅｒ ｐｅｓｖｉｒｕｓｆａｍｉｌｙ .Ｉｔｗａｓｆｉｒｓｔｉｓｏｌａｔｅｄｆｒｏｍａｃｔｉｖａｔ ｅｄＣＤ4 Ｔｃｅｌｌｓｆｒｏｍｐｅｒｉｐｈｅｒａｌｂｌｏｏｄｍｏｎｏｎｕ ｃｌｅａｒｃｅｌｌｓ (ＰＢＭＣｓ)ｏｆａｈｅａｌｔｈｙｉｎｄｉｖｉｄｕａｌ[1] ,ａｐａｔｉｅｎｔｗｉｔｈｃｈｒｏｎｉｃｆａｔｉｇｕｅｓｙｎｄｒｏｍｅ(ＣＦＳ) [2 ] ,ａｎｄｆｒｏｍｓａｌｉｖａｏｆｈｅａｌ…     

1株肠道病毒71型毒株的分离与鉴定

目的 探讨手足口病病原体肠道病毒71型(EV71)的分离与鉴定方法。方法 采集手足口病疑似病例的咽拭子标本1份接种于人横纹肌肉瘤细胞(rhabdomyosarcoma cell, RD细胞),通过观察病毒的细胞病变效应(cytopathic effect, CPE)来分析EV71的分离效果。分别利用荧光定量聚合酶链反应(RT-PCR)及免疫印迹分析(Western Blotting)方法来鉴定EV71病毒特异性核酸和蛋白。扩增EV71VP1区全长基因,对其序列进行同源性比较及遗传进化分析。结果 手足口病疑似病例咽拭子标本接种RD细胞传代至第2代后出现CPE。RT-PCR和Western Blotting检测结果均显示,感染组RD细胞中有EV71病毒特异性条带,暂命名为EV71分离株2016SHYP001。序列分析结果显示,2016SHYP001株病毒的VP1区核苷酸与C型代表株的同源性较高,为93.1%~98.3%;其中与C4a亚型代表株的同源性最高,为98.3%。进化树分析发现本地流行株与深圳地区流行株的亲缘较近。结论 成功分离出一株新的EV71病毒株2016SHYP001,其株型为C4a亚型。     

黄芩甙对柯萨奇Ⅲ型病毒性心肌炎病毒复制的影响

目的采用观察细胞病理变化(CPE)的方法,探讨黄芩甙对柯萨奇Ⅲ型病毒复制的影响。方法通过细胞培养,用先吸附病毒再加入药物、先用药物处理后攻击病毒和直接灭活的方法,观察黄芩甙的药效学作用。结果在病毒先感染细胞后加入黄芩甙的实验中,低病毒感染量(10TCID50)时,显示出对柯萨奇Ⅲ型病毒有一定的抗病毒活性;在黄芩甙与病毒同时加入的实验中,在100TCID50、10TCID50时,均显示出对柯萨奇Ⅲ型病毒的抑制作用。结论黄芩甙对柯萨奇Ⅲ型病毒有一定的抗病毒活性。     

Swine interferon. I. Induction in porcine cell cultures with viral and synthetic inducers

The production of interferon by porcine kidney (PK(15)) cell culture in response to viral and synthetic inducers was studied. The inducers used included a synthetic double-stranded polyribonucleotide, polyriboinosinic-polyribocytidylic acid (Poly I:C), swine influenza virus and three strains of pseudorabies virus. Following exposure to these inducers cell culture fluids were examined for interferon by the plaque-reduction method.The Poly I:C and the swine influenza virus induced production of interferon by PK(15) cell cultures, whereas, all three strains of pseudorabies virus at the two concentrations tested failed to induce production of interferon in vitro.The antiviral substance produced in PK(15) cells was identified as an interferon because it was pH stable, non-dialyzable, sensitive to trypsin, non-sedimentable, relatively heat stable, host-species specific and it possessed broad-spectrum antiviral activity. The latter was demonstrated by inhibition of vesicular stomatitis, vaccinia and pseudorabies viruses. Differences in interferon activity against the different viruses were observed.     

Antiviral and interferon-inducing effect of fang-gan mixture

The present study was carried out by using the plaque formation test, microdosage cytopathic effect (CPE) method, and mice nasal-cavity-attacking method to observe the antiviral and interferon-inducing effect of Fang-Gan mixture (FGM). The results showed that FGM has direct respiratory syncytia virus (RSV) inactivation effect, and protection effect after mice infected by RSV. FGM could also decrease mice death rate (P less than 0.01) in the experimentation of using parainfluenza virus to attack them, and work in coordination with interferon induced by Newcastle disease virus. After 8, 16, 24, 32 hours of injecting FGM into mice abdominal cavity, the authors used CPE method to determine interferon titer of L929 cells, and found that the highest interferon titer was 98.23 mu/m at the 24th hour. The interferon induced by FGM was in keeping with the nature of Type I interferon. The results suggested that FGM might have strong antiviral effect which is achieved by inducing interferon.     

Diagnosis of viral agents associated with neonatal calf diarrhea.

During this study, 134 samples have been examined for the detection of the viruses associated with neonatal calf diarrhea. The presence of Nebraska viruses (rotavirus and coronavirus) has been demonstrated by using the electron microscope and the fluorescent antibody techniques while the presence of other viruses has been detected by the observation of a cytopathic effect on monolayer cells of calf testis. The Nebraska viruses have been demonstrated in 107 (80%) out of 134 field case specimens. An association of rotaviruses and coronaviruses was found in 58 cases (54%) whilst the coronaviruses and the rotavirus were found singly in 34 cases (53%) and in 15 cases (14%) respectively. Four bovine virus diarrhea viruses, two infectious bovine rhinotracheitis viruses and two enteroviruses have also been isolated in the preceding 107 Nebraska positive specimens. For the detection of the Nebraska viruses, the fluorescent antibody techniques were more sensitive than the electron microscopy. However, those two techniques must be used simultaneously for a better detection of a greatest possible number of cases.     

泰州地区流感病毒病原学检测分析

目的研究泰州地区近期流感病毒的流行情况，为制定防治决策提供实验室依据。方法在流感监测点和爆发点采集流感样病例鼻咽拭子，用狗肾传代细胞培养技术对采集标本进行病毒分离培养，用“O”型人血红细胞检测培养物的血凝活性，血凝试验阳性且滴度大于1：8的毒株送江苏省疾病预防控制中心确认和分型。结果从泰州145份流感样病例鼻咽拭子标本中成功分离出21株流感病毒，分离率为14．5％。经江苏省疾控中心鉴定H1N1型9株，B型12株。结论泰州市流感流行毒株型别与江苏省内其他监测点相符；病毒分离培养是流感实验室监测中敏感且准确的方法之一。