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1.
Lupus nephritis: varying complement-fixing properties of immunoglobulin G antibodies to antigens of cell nuclei 总被引：12，自引：0，他引：12
Relative complement-fixing activity of antibodies to nuclear antigens, including DNA, were determined in serums of 15 patients with, and 65 patients without, active lupus nephritis, by comparing titers obtained in two methods. High complement-fixing activity of antibody was found in the nephritis group and low activity in the others. Results with immunoglobulin G fractions were similar. 相似文献
2.
HUEBNER RJ LANE WT WELCH AD CALABRESI P MCCOLLUM RW PRUSOFF WH 《Science (New York, N.Y.)》1963,142(3591):488-490
Subcutaneous tumors induced in newborn hamsters by type 12 adenovirus were suppressed when 0.5 mg of 5-iodo-2'-deoxyuridine (IUdR) was given at the same subcutaneous site as the virus. Although one injection of IUdR given immediately after the virus was effective, additional injections on subsequent days reduced further the number of hamsters developing tumors. These effects of lUdR are especially interesting since replication of infectious adenovirus 12 cannot be demonstrated in the hamsters at any time before or after tumor development. 相似文献
3.
In 19 lots of standard commercial gamma globulin from humans, the titers of antibody neutralizing rubella virus varied from, 256 to 2048. The titers could not be correlated with geographic location of the donors, method of extraction, or tissue source. Samples of gamma globulin from rubella convalescents had titers of 4096. These titers were approximately 20 times higher than those in serum specimens from patients ill with natural or experimental infection. Serum antibody appears to persist for a number of years at nearly the original titers. 相似文献
4.
复方中药提取物对REV诱发的免疫抑制鸡的免疫增强作用 总被引：8，自引：2，他引：6
【目的】探讨复方中药提取物对REV诱发的免疫抑制鸡的免疫增强作用,建立测试某些中药制剂免疫增强作用的实验模型。【方法】分别在临床健康鸡和在1日龄感染网状内皮增生病病毒（REV）诱发了免疫抑制状态的鸡测试了中药制剂对鸡的免疫增强作用。【结果】随饮水饲喂黄芪、党参、淫羊藿和甘草复方中药浸出物,在健康鸡对鸡新城疫病毒（NDV）和H5亚型禽流感病毒（H5-AIV）灭活疫苗免疫后的血凝抑制（HI）抗体滴度没有明显影响。但是在REV诱发了免疫抑制的鸡,该中药浸出物可显著提高对NDV和H5-AIV的HI抗体滴度（P＜0.01）,虽然仍显著低于未经REV感染的对照鸡。【结论】REV诱发的免疫抑制状态下的鸡,可作为测试某些中药制剂免疫增强作用的一种实验模型。 相似文献
5.
Evidence for exposure to HTLV-III in Uganda before 1973 总被引：5，自引：0，他引：5
W C Saxinger P H Levine A G Dean G de Thé G Lange-Wantzin J Moghissi F Laurent M Hoh M G Sarngadharan R C Gallo 《Science (New York, N.Y.)》1985,227(4690):1036-1038
Fifty of 75 serum samples collected in the West Nile district of Uganda between August 1972 and July 1973 contained antibodies reactive with human T-cell leukemia (lymphotropic) virus type 3 (HTLV-III; mean titer, 601), while 12 of 75 samples were positive in a similar test for HTLV type 1 (HTLV-1) antibodies (mean titer, 236). The samples were screened by enzyme-linked immunosorbent assay and positive results were confirmed by a newly developed unlabeled antibody-peroxidase procedure with enhanced sensitivity for detection of antibody binding to immunoblots of HTLV-III antigen, demonstrating antibodies to proteins with molecular weights of 24,000, 41,000, and 76,000 in nearly all positive samples. Analysis of titration data indicated enhanced titers of antibody against HTLV-III and HTLV-I when coinfection occurred. The high prevalence and relatively low titers [compared to serum from patients with acquired immune deficiency syndrome (AIDS)] of antibodies recognizing HTLV-III proteins in sera from this population at a time that may predate or coincide with the appearance or spread of the AIDS agent (HTLV-III) suggest that the virus detected may have been a predecessor of HTLV-III or is HTLV-III itself but existing in a population acclimated to its presence. It further suggests an African origin of HTLV-III. 相似文献
6.
猪细小病毒灭活疫苗NJ株毒种分离及鉴定 总被引：2，自引：0，他引：2
为防控猪细小病毒病,进行了猪细小病毒灭活疫苗毒种研究。将南京某猪场初产母猪流产胎儿的脾、肺等组织病料处理后接种ST细胞培养,获得了1株猪细小病毒强毒,将分离毒株适当稀释接种ST细胞,经3轮蚀斑纯化获得1株纯净的猪细小病毒NJ株(PPV-NJ株),作为疫苗毒株。将NJ株接种ST细胞培养连续传15代,每代次病毒效价均不低于1 ml 107.25TCID50、血凝素效价不低于29。选择第5代病毒液,灭活后与矿物油佐剂混合乳化制成灭活疫苗,以不同剂量分别免疫豚鼠和后备母猪,用血凝抑制试验(HI)和ELISA检测抗体效价。分别用剂量0.125 ml、0.250 ml和0.500 ml疫苗免疫豚鼠28 d后,各免疫组HI抗体效价均高于28,0.5 ml组HI抗体效价高达211,ELISA抗体均显示阳性(OD630≥0.32),分别用剂量0.5 ml、1.0 ml和2.0 ml疫苗免疫后备母猪后,HI检测结果显示,3个剂量组免疫后1周HI抗体效价高于26,3周后达峰值,至免疫后4个月略有下降,2.00 ml剂量组HI效价最高(211.75)。ELISA检测结果显示,各剂量组在免疫后1周均转阳(OD630≥0.32),免疫后4～18周均维持较高水平。HI抗体效价和ELISA抗体水平与免疫剂量均呈正相关性。结果显示,利用NJ株病毒制备的灭活疫苗具有抗体产生快、效价高等特点,显示出良好的疫苗开发前景。 相似文献
7.
Human T-cell leukemia virus (HTLV-I) antibodies in Africa 总被引：12，自引：0，他引：12
W Saxinger W A Blattner P H Levine J Clark R Biggar M Hoh J Moghissi P Jacobs L Wilson R Jacobson 《Science (New York, N.Y.)》1984,225(4669):1473-1476
Antibodies specific for human T-cell leukemia-lymphoma virus type I (HTLV-I) were demonstrated in serum samples from various groups of people in South Africa, Uganda, Ghana, Nigeria, Tunisia, and Egypt. The samples had been collected for other purposes and were presumably selected without bias toward clinical conditions associated with HTLV infections. Regional differences in antibody positivity were observed, indicating widely distributed loci of occurrence of HTLV on the African continent in people of both black and white ancestry. Two patients with high titers of antibody to HTLV-I had some signs of adult T-cell leukemia-lymphoma. In several groups a high frequency of false positive serum reactions was indicated when specific confirmation steps were included in the assay. Further characterization of these sera revealed highly elevated immunoglobulin levels, possibly due to polyclonal activation of immunoglobulin synthesis in these subjects. The possibility that related cross-reactive human retroviruses coexist in the same groups was not eliminated. 相似文献
8.
Immunoregulatory lymphokines of T hybridomas from AIDS patients: constitutive and inducible suppressor factors 总被引：11，自引：0，他引：11
Supernatants derived from peripheral blood mononuclear cell cultures of certain patients with the acquired immunodeficiency syndrome (AIDS) or its prodromes have the capacity to block T cell-dependent immune reactivity in vitro. T cells derived from a patient positive for antibody to the lymphadenopathy associated virus ( LAV ), and elaborating high titers of these soluble suppressor factors, were fused to a mutagenized clone of the human T lymphoblastoid cell line KE37 . Molecules capable of profoundly depressing T cell-dependent polyclonal antibody production and DNA synthetic responses, either directly or after incubation with normal adherent cells, were isolated from stable hybrid clones. 相似文献
9.
Virus particles and murine leukemia virus complement-fixing antigen in neoplastic and nonneoplastic cell lines 总被引：9，自引：0，他引：9
W T Hall W F Andresen K K Sanford V J Evans J W Hartley 《Science (New York, N.Y.)》1967,156(771):85-88
Twenty-seven lines of murine tissue cultures derived from 12 different cell pools and grown on various media were examined with the electron microscope for morphologically detectable virus particles. They were also tested for complement-fixing mouse leukemia virus antigens and for recoverable virus. A 100-percent correlation between results obtained by these two methods is reported.An additional 19 lines from 8 different cell pools were examined for either virus particles or complement-fixing antigens. All lines were assayed for neoplastic transformation. Seven cell pools gave rise to lines showing evidence of contamination with leukemia virus. Since most of these lines had also undergone "spontaneous" neoplastic transformation in vitro, this virus cannot be excluded as a possible cause of the neoplastic change, or of influencing it. The remaining cell pools gave rise to lines with no evidence of contamination with leukemia virus;but most of these lines also underwent similar transformation. These results suggest that "spontaneous" neoplastic transformation can occur in the absence of detectable mouse leukemia virus. 相似文献
10.
本文对人工感染传染性法氏囊病病毒(IBDV)雏鸡接种新城疫(ND)疫苗后的红细胞凝集抑制(Hi)抗体滴度和免疫保护力进行了检测。结果表明,人工感染IBDV雏鸡一次接种ND疫苗后的Hi抗体滴度和免疫保护力,明显低于未感染IBDV的对照雏鸡;人工感染IBDV雏鸡二次接种ND疫苗后的Hi抗体滴度和免疫保护力,比一次接种ND疫苗时明显升高。 相似文献
11.
在家蚕培养细胞及幼蚕中表达传染性法氏囊病病毒（IBDV）主要宿主保护性抗原VP2蛋白的基础上,初步研究了该表达产物的免疫原性。Western免疫印迹和ELISA均检测到春蚕和秋蚕中的VP2蛋白活性。含VP2的春蚕蚕血制成的注射疫苗皮下注射18日龄非免疫鸡,两周后二免;含VP2的秋蚕蚕血冻干制成口服疫苗,隔天喂服18日龄非免疫鸡。于首免后第10,13,21,28,37日分别采血,第37日攻毒。病毒血清中和试验显示注射组及口服组的中和抗体滴度最高可达1∶4211.3和1∶3118.9,攻毒结果显示它们对IBDV中国标准强毒株BC6/85的攻击保护率为100%和80%。以上研究表明家蚕表达的VP2蛋白具有良好的免疫原性,从而为开发实用化低成本的疫苗打下了扎实基础。IBDV亚单位疫苗的口服免疫有效是一个重要发现。 相似文献
12.
用温酚法分别从柱状嗜纤维菌(Cytophaga columnaris)、嗜水气单胞菌(Aeromonas hydrophila)和叉尾鮰爱德华菌(Edwardsiella ictaluri)3种鱼类致病菌中提取粗脂多糖(LPS)作为免疫原,分别接种斑点叉尾鮰(Ictalurus punctatusRafinsque)后,通过测定受免鱼的交叉凝集抗体效价、头肾和血液中吞噬细胞的吞噬活性以及对A.hydrophila活菌细胞内的杀菌活性,探讨了3种致病菌的粗LPS对斑点叉尾鮰的免疫原性。结果表明,从3种致病菌中提取的粗LPS对斑点叉尾鮰均具有较强的免疫原性,受免鱼的血清中存在对3种致病菌的交叉凝集抗体,与对照鱼相比,头肾和血液中吞噬细胞对吞噬原的吞噬活性和对A.hy-drophila活菌杀菌活性明显上升。说明在3种供试菌的粗LPS上不同程度地存在3种致病菌的共同保护性抗原。 相似文献
13.
斑点叉尾鮰对3种致病菌灭活菌苗的免疫应答 总被引：1，自引：1，他引：0
将经福尔马林灭活的柱状嗜纤维菌(Cytophaga columnaris)、嗜水气单胞菌(Aeromonas hydrophi-la)和叉尾鮰爱德华菌(Edwardsiella ictaluri)作为免疫原,分别接种斑点叉尾鮰(Ictalurus punctatusRafinsque)后,通过测定受免鱼的交叉凝集抗体效价、头肾和血液中吞噬细胞的吞噬活性及用A.hydrophila活菌攻毒的方法,探讨了斑点叉尾鮰对3种灭活菌苗的免疫应答状况。试验结果表明,对斑点叉尾鮰经腹腔注射接种3种灭活菌苗能刺激受免鱼产生较强的免疫应答,受免鱼产生了对3种致病菌的特异性凝集抗体和交叉凝集抗体,与未接种菌苗的对照鱼相比,受免鱼头肾和血液中吞噬细胞的吞噬活性明显上升,活菌攻毒的结果也证明了受免斑点叉尾鮰对C.columnaris,A.hydrophila和E.ictaluri产生了不同程度的相对免疫保护率(RPS)。 相似文献
14.
A C Hollinshead O Lee P B Chretien J L Tarpley W E Rawls E Adam 《Science (New York, N.Y.)》1973,182(113):713-715
Serums from tumor-bearing patients, cured patients, and normal subjects were examined for antibodies to the separated complement-fixing reactive components of nonvirion antigens of herpesvirus type 1 and type 2. The occurrence of antibodies to the antigens was similar in serums from tumor-bearing patients and cured patients. Antibodies to the antigens were observed among 21 of 24 (87 percent) cervical cancer cases, 44 of 49 (90 percent) laryngeal cancer cases, 15 of 24 (62 percent) cases of squamous cell carcinomas of the head and neck excluding the larynx, 2 of 24 (8 percent) nonsquamous cell cancer cases, and 3 of 51 (6 percent) normal subjects. By contrast, no differences were found in the titers of neutralizing antibodies to the virus in serums from laryngeal cancer patients and controls. The observations support an etiologic role of herpesviruses in cervical cancer and in laryngeal cancer, and possibly other squamous cell cancers of the head and neck. 相似文献
15.
Myxovirus antibody increases in human connective tissue disease 总被引：12，自引：0，他引：12
Antibodies to measles and parainfluenza type 1 viruses were significantly increased in systemic lupus erythematosus and Reiter's syndrome. Of the individuals with highest titers of measles antibody, 75 percent had neurologic illness. Persistent virus infection may be a factor in the pathogenesis of these diseases. 相似文献
16.
H5亚型禽流感疫苗免疫肉鸡、水禽后抗体消长规律的研究 总被引：16，自引：5，他引：11
通过对父母代肉鸡、水禽禽流感病毒H5血清血凝抑制抗体水平连续跟踪监测。探讨Hs亚型禽流感疫苗免疫肉鸡、水禽后抗体消长规律。结果表明：雏鸡7日龄时母源抗体水平达最大值,20日龄时母源抗体下降到极低水平,雏鸡最佳首次免疫日龄为10日龄左右,二次免疫应根据鸡群母源抗体水平于首次免疫后100d左右进行。雏鹅、鸭3日龄进行首次免疫,水禽对禽流感疫苗产生良好的免疫应答,并于免疫后25-30d达到抗体高峰,但首次免疫抗体维持时间不长,最佳二次免疫时间应在首次免疫后30d左右进行。 相似文献
17.
将鸡传染性喉气管炎病毒(ILTV) 河南长葛株gD基因重组到鸡痘病毒基因组中,获得了能高效表达糖蛋白D的重组鸡痘病毒(rFPV-gD) .将rFPV-gD经皮下刺种途径接种30日龄的固始鸡,用ILTV商品弱毒疫苗经滴鼻、点眼途径免疫试验鸡,同时设非免疫对照鸡群.分别于免疫后7、14、21、28、35和42 d采血分离血清,用微量血清中和试验测定ILTV抗体效价,并于免疫后42 d用ILTV强毒攻击所有试验鸡只.血清中和抗体检测结果表明:疫苗对照组与重组病毒组差异不显著(P>0.05) ,而重绀病毒组和疫苗对照组与空白对照组相比筹异均显著(P<0.05) .免疫42 d攻毒后鸡的发病情况表明,重组病毒组和疫苗对照组对ILTV强毒攻击的保护率均为96.67%,而空白对照组为6.67%,说明该重组病毒作为弱毒疫苗能够抵抗ILTV强毒的攻击,对免疫鸡群有较好的保护作用. 相似文献
18.
斑点叉尾鮰对3种致病菌外膜蛋白(OMP)的免疫应答 总被引：1，自引：1，他引：0
利用从嗜水气单胞菌(Aeromonas hydrophila)、柱状嗜纤维菌(Cytophaga columnaris)和叉尾鮰爱德华菌(Edwardsiella ictaluri)中提取的外膜蛋白(outer membrane protein,OMP)作为免疫原,注射接种斑点叉尾鮰(Ictalurus punctatus Rafinsque)后,通过测定受免鱼的交叉凝集抗体效价、肾脏和血液中吞噬细胞的吞噬活性和采用A. hydrophila活菌攻毒方法,比较了3种致病菌OMP对斑点叉尾鮰的免疫原性。试验结果表明:从3种致病菌中提取的OMP对斑点叉尾鮰均具有较强的免疫原性,受免鱼的血清中存在对3种致病菌的交叉凝集抗体,与对照鱼相比,肾脏和血液中吞噬细胞对吞噬原的吞噬活性和对A. hydrophila活菌攻毒的相对免疫保护率(relative percent survival,RPS)明显上升。说明在3种供试菌的OMP上不同程度地存在共同保护性抗原。 相似文献
19.
2种植物多糖对PRRSV灭活苗免疫猪抗体及T淋巴细胞亚群的影响 总被引：2，自引：1，他引：1
将24头35日龄断奶仔猪随机分为6组,2种多糖(山药多糖和黄芪多糖)分别以高、低2个剂量(山药多糖剂量17.10、8.55mg/kg,黄芪多糖剂量为11.50、5.75mg/kg)和猪PRRSV灭活苗同时注射,于免疫后不同时间点采血,监测PRRSV抗体水平和外周血中T淋巴细胞亚群的变化.结果表明,2种多糖均能增强免疫猪的体液免疫,其中以高剂量的黄芪多糖效果较好;2种多糖均能促进猪CD3+细胞的增殖,其中以山药多糖效果较好,提示2种多糖对PRRSV灭活苗免疫效果均有较好的增强作用. 相似文献
20.
同腹异育银鲫对鱼类3种致病弧菌粗脂多糖的免疫应答 总被引：4，自引：2，他引：4
用从鳗弧菌（Vibrio anguillarun)，哈维氏弧菌（Vibrio harveyi)和副溶血弧菌（Vibrio parahaemolyticus)等3种弧菌中提取的菌体粗脂多糖（LPS）作为免疫原，分别经胸鳍基部接种同腹异育银鲫（Carassius auratus gibelio)后，通过测定受免鱼的凝集抗体效价，明和血液中吞噬细胞的吞噬活性和杀菌活性，检测3种弧菌的粗LPS对异有银鲫免疫应答的试验结果。结果表明，3种弧菌的粗LPS对异育银鲫均具有较强的免疫原性，受免鱼的血清中出现对3种弧菌的福尔马林灭活菌体（FKC）的交叉凝集抗体；与对照鱼相比，受免鱼头肾和血液中吞噬细胞的吞噬活性和杀菌活性明显上升，证明在3种弧菌的粗LPS上存在共同保护性抗原，而且这些共同保护性抗原对异育银鲫具有较强的免疫原性。 相似文献