单克隆抗体在动物衣原体病血清诊断上的应用

采用淋巴细胞杂交瘤技术，研制出的抗衣原体单克隆抗体，应用酶联免疫吸附试验（ELISA）方法，对本地区所采得的231份猪血清，128份羊血清，90份牛血清进行检测，结果：猪血清阳性检出率为30．7％，羊为25．8％，牛为32．2％；选猪、羊、牛血清各50份，用已建立的检测衣原体抗体ELISA方法与的间接血凝试验（IHA）进行比较，猪血清ELISA阳性检出率为30％，IHA为26％，ELISA比IHA试验高出4个百分点。牛血清ELISA阳性检出率为32％，IHA为24％，ELISA比IHA试验高出8个百分点。羊血清ELISA阳性检出率为26％，IHA为22％，ELISA比IHA高出4个百分点。     

衣原体单克隆抗体在规模化牛羊场相关抗体的检测中的应用

采用淋巴细胞杂交瘤技术,研制出的抗衣原体单克隆抗体(McAb),应用酶联免疫吸附试验(ELISA)方法,对本地区所采的1361份牛血清,698份羊血清进行检测,结果:牛血清阳性检出率为9.18%,羊为22.06%。选择牛羊血清各50份用已建立的检测衣原体抗体ELISA方法与传统的间接血凝试验(IHA)进行比较,其敏感性高。牛血清ELISA阳性检出率为32%,IHA为24%,ELISA比IHA试验高出8个百分点。羊血清ELISA阳性检出率为26%,IHA为22%,前者比IHA高出4个百分点。     

规模化牛场奶牛衣原体和布鲁菌病相关抗体的检测分析

为检测并分析银川地区规模化牛场牛衣原体和布鲁菌病的相关抗体,采用鹦鹉热衣原体McAb-ELISA方法和布鲁菌虎红平板凝集试验(RBPT)方法进行特异性检测,应用McAb-ELISA方法与传统的IHA试验方法分别对同样50份待检牛血清进行衣原体抗体的比较检测。结果表明,银川地区的16个牛场1 161份牛血清衣原体总的阳性率为9.22%。布鲁菌的血清阳性率为13.26%。对50份牛血清采用2种试验方法同时进行衣原体抗体检测,ELISA阳性检出率为32%,IHA为24%。McAb-ELISA比IHA的特异性强。     

衣原体单克隆抗体在牛羊血清诊断上的应用

采用淋巴细胞亲交瘤技术，研制出的抗衣原体单克隆抗体，应用酶联免疫吸附试验（ＥＬＩＳＡ）方法，对本地区所采集的１２８份羊血清、９０份牛血清进行检测，结果，羊血清阳性检出率为２５．８％，牛血清阳性检出率为３２．２％，选择５０份羊血清、５０份牛血清用已建立的检测衣原体抗体ＥＬＩＳＡ与间接血凝试验（ＩＨＡ）进行比较，牛血清ＥＬＩＳＡ阳性检出率为３２．０％，ＩＨＡ为２４．０％，ＥＬＩＳＡ比ＩＨＡ试验高出８个百分点；羊血清ＥＬＩＳＡ阳性检出率为２６．０％，ＩＨＡ为２２．０％，ＥＬＩＳＡ比ＩＨＡ高出４个百分点。     

青海省湟中县绵羊衣原体病的调查报告

笔者应用衣原体间接血凝试验(IHA)对青海省湟中县绵羊衣原体病血清学进行了调查,共检测400份生产母羊血清,检出阳性样品3份,阳性率0.75%。其中,检测上新庄镇的羊血清140份,阳性0份,阳性率为0;检测大才乡的羊血清100份,阳性3份,阳性率3%;检测田家寨镇的羊血清60份,阳性0份,阳性率为0;检测海子沟乡的羊血清100份,阳性0份,阳性率为0。     

共和县牛羊衣原体病血清学调查

为掌握共和县牛羊衣原体病的感染情况,2012~2014年,应用间接血凝(IHA)试验对牛血清900份、羊血清1150份进行了衣原体病血清学检测,检出牛血清阳性34份,阳性率为3.78%,羊血清阳性105份,阳性率为9.13%。结果表明共和地区牛羊群中有衣原体病感染,并有逐年上升趋势。     

贵州省牛羊衣原体感染血清学调查

用间接血凝试验(IHA)对采自贵州省内838份牛血清、515份羊血清进行衣原体抗体检测。结果表明,抗体阳性牛血清24份,阳性率为2.86%,牛群阳性率为39.13%;抗体阳性羊血清186份,阳性率为36.12%,羊群阳性率为89.47%。调查表明贵州省部分牛群和羊群存在不同程度的衣原体感染。     

甘肃省猪衣原体病的血清学调查

对全省未进行过猪衣原体病免疫的11个地市的868份猪血清应用间接血凝(IHA)试验进行抗体检测，结果在11个地市中均检出抗体阳性猪血清，阳性检出率平均为34.91％。     

环湖海北牧区牛羊衣原体病血清学调查

应用衣原体间接血凝试验(IHA),对采自海北四县的1223份羊血清、1410份牛血清,进行了衣原体病的血清学检测,结果共检出阳性羊血清91份,阳性率为7.44%,阳性牛血清35份,阳性率为2.48%。结果表明环湖海北州境内牛羊衣原体分布地区广,感染率高,是引起牛羊流产危害畜牧业生产的主要因素之一。     

甘肃省猪衣原体病的血清学调查

1998～2000年，对全省未进行过猪衣原体病免疫的11个地州市的868份猪血清应用间接血凝(IHA)试验进行抗体检测。结果在11个地市中均检出抗体阳性猪血清，全省猪衣原体病的阳性检出率平均为34．91％，阳性检出率最高达52．48％，最低13．95％。     

Evaluation of the indirect hemagglutination assay as a practical serodiagnostic test for mycoplasmal pneumonia of swine

Sera from swine experimentally or naturally infected with Mycoplasma hyopneumoniae (the etiological agent of mycoplasmal pneumonia of swine, MPS) were tested by the indirect hemagglutination assay (IHA), the enzyme-linked immunosorbent assay (ELISA) and the complement fixation (CF) test. The IHA detected antibody at comparable times and levels to the other 2 serological tests following experimentally-induced infection. In the late antibody response (greater than or equal to 86 days post-infection), the ELISA titres were higher than either the IHA or the CF test. The IHA appeared least satisfactory when it was used to test sera from commercial swine herds. When 1000 sera were tested, the IHA was positive for only 30 (22%) of 135 sera which were positive by the ELISA and the CF test. The IHA titres were low; 20 of the 30 sera had a titre of only 10. The end-points for the IHA were difficult to read for sera of this low titre. The relationship between positive IHA results for the herd sera obtained at necropsy, and the occurrence of gross or microscopic lesions typical of MPS was poor (41 and 50% agreement, respectively). An agreement of 39% was noted between positive IHA results and the localization of mycoplasmal antigens by an indirect immunofluorescence (IIF) test. However, IHA results correlated significantly (P less than 0.05) with gross and microscopic lesions, but not with the IIF test. No significant correlation was noted between the IHA (or the other 2 serologic tests) and the cultural isolation of M. hyopneumoniae or M. flocculare. On the basis of these results, the IHA appears to have limited promise as a practical test for the diagnosis of MPS in commercial swine herds because of the low titres observed, poor correlation of the IHA and other indicators of MPS, the necessarily subjective determination of end-points, and other inherent technical limitations of the test.     

Development and evaluation of an enzyme-linked immunosorbent assay for bovine antibody (IgG) to Pasteurella haemolytica

The sensitivity of an indirect enzyme-linked immunosorbent assay (ELISA) for bovine IgG serum antibody to Pasteurella haemolytica was compared with that of an indirect hemagglutination (IHA) test. Pasteurella haemolytica serotypes were grown in a chemically defined cell culture medium, and soluble antigens released into the growth medium were used in the ELISA and IHA test. An ELISA with serotype-1 antigen consistently detected antibody in sera that were positive by IHA test (correlation, 99%). Sera reacting with serotype-1 ELISA antigens also reacted with ELISA antigens prepared from other serotypes. Although ELISA titers averaged 5 log2 units higher than IHA titers, plots of titers determined by the 2 methods were approximately linear. Titer increases detected in paired serum samples by either test were similar. The ELISA was more sensitive than was the IHA in detecting colostral IgG antibody in serum of newborn calves. The ELISA uses a simple, stable antigen preparation and detects antibody to P haemolytica serotypes that commonly infect cattle.     

贵州省猪弓形虫病的血清学调查

为全面了解贵州省猪弓形虫感染情况,对采自9个市（州、地）264个养猪场（户）的2 906份血清用酶联免疫吸附试验（ELISA）检测猪弓形虫抗体,总体阳性率为65.83%,变化范围为27.88%~85.42%。采集65份猪血清做ELISA和间接血凝试验（indirect heamagglutination assay,IHA）比较测定,两种方法总体符合率为58.46%。IHA方法补充检测177份猪血清,弓形虫抗体阳性率为27.68%。血清学调查结果与国内部分省（市）报道相符。     

用酶联免疫吸附和正向间接血凝试验检测猪瘟抗体

应用ELISA和IHA对我省两种猪场的66份血清进行了检测,结果表明用ELISA检测两猪场免疫合格率分别为83.33%、80.5%,用IHA检测分别为90%、97.2%;两者检测结果符合率为84.8%,具有较高的群体相关性。     

ELISA和IHA检测弓形虫抗体的比较试验研究

目的:分析ELISA方法和IHA方法检测弓形虫病的可靠性。方法:本文应用酶联免疫吸附试验(ELISA)和间接血凝试验(IHA)两种方法,平行检测来自龙岩市某个猪场的32份猪血清中的抗弓形虫特异性抗体。结果:ELISA和IHA对猪弓形虫抗体阳性检出率分别为62.5%(20/32)、53.13%(17/32),这两种方法的阳性检出符合率较高,为71.88%(23/32)。其中,ELISA方法的敏感性(93.33%)、检测效率(81.25%)以及Youden指数(63.92%)都在IHA方法之上,但ELISA方法的特异性(12/17,70.59%)略低于I-HA方法(13/17,76.47%)。结论:ELISA和IHA两种方法均可用于猪弓形虫病的诊断和血清学调查,但ELISA方法更适用于猪弓形虫病的血清学调查。     

The significance of antibodies to Pasteurella haemolytica A1 in the colostrum of cows and blood serum of calves]

Antibodies to P. haemolytica were detected in colostral sera of cows and blood sera of calves by means of indirect haemagglutination (IHA) and ELISA. The ELISA titres of the colostral sera of the dams and of the blood sera of the calves showed a significantly positive correlation. There is a positive correlation between the titres of the two serological methods. The results of the challenge infection with P. haemolytica A 1 do not show a correlation between the titres and the severity of the disease. Heifer calves, however, developed more severe pneumonias than calves from older cows.     

湖北西南地区猪传染性胸膜肺炎的血清学调查

采用猪传染性胸膜肺炎间接血凝试验(IHA)对恩施州34家具有一定规模猪场的731份血清样品进行血清学调查,结果阳性率高达28.18%.其中被检仔猪血清206份,阳性42份,阳性率为20.39%;被检育肥猪血清237份,阳性67份,阳性率为28.27%;被检种猪血清288份,阳性97份,阳性率为33.68%.     

河北进境种用动物衣原体血清学检测

衣原体病是一种重要的人畜共患病,给养殖业带来巨大的经济损失,同时严重威胁从业人员的身体健康。本研究对河北辖区引进的2批种鸡、2批种鸭及2批种猪进行抽样,使用间接血凝试验（IHA）检测引进种用动物的衣原体抗体。结果表明：衣原体IHA抗体阳性率为15.7%。在种鸡、种鸭和种猪中均检测到衣原体IHA抗体,阳性率分别为18.1%、4.2%和20%。这说明在引进种用动物中存在着较高的衣原体抗体阳性率,需要加强对该病的检测。     

牛副结核ELISA诊断方法研究

本文建立了牛副结核病ELISA诊断方法。采用亲和层析抗原。被检血清以高压粉碎草分枝杆菌吸收原进行吸收。该方法的敏感性76％,特异性97％,通过对2483头奶牛进行检测,检出率为6.1％,并与常规的补反和变态反应进行了比较。作者认为:牛副结核ELISA可以替代补反,做为检测牛副结核的一种有力手段。     

Comparison of an indirect haemagglutination assay and an ELISA for diagnosing Fasciola hepatica in experimentally and naturally infected sheep.

An enzyme-linked immunosorbent assay (ELISA) with somatic (S) or excretory-secretory antigens (ES) was compared with an indirect haemagglutination assay (IHA) for ability to detect antibodies against Fasciola hepatica in sheep. The specificity of both assays was determined by testing sera collected from sheep experimentally or naturally mono-infected with Fasciola hepatica, Haemonchus contortus, Ostertagia circumcincta, Cooperia curticei, Taenia ovis, Eimeria spp., Trichostrongylus vitrinus, Trichostrongylus colubriformis or Nematodirus battus respectively. With S or ES antigens the specificity of the ELISA was 98% or 95% respectively, whereas the specificity of the IHA was 86%. Antibodies directed against Fasciola hepatica were detected by the ELISA with S or ES antigens from 2 weeks after infection until the end of the experiment, whereas the IHA detected antibodies from week 3. We conclude that the ELISA with S antigens compares favourably with the IHA and can be used for the serodiagnosis of ovine fasciolosis in the Netherlands.