免疫刺激复合物的佐剂作用及其在兽用疫苗上的应用   总被引：1，自引：0，他引：1  

肖琛闻  胡松华 《中国牛业科学》2004,30(1):47-50

本文介绍一种新型佐剂免疫刺激复合物(Iscoms)的组成,及其在抗原的摄取、细胞因子分泌、T细胞和B细胞反应等三个方面对免疫反应的调节。同时对Iscoms在兽用疫苗上的应用也作了相应的概述。  相似文献   

纤毛蛋白与绵羊白细胞介素2融合基因工程疫苗对实验动物的体液免疫应答   总被引：2，自引：0，他引：2  

王克坚  陈立志  刘晓颖  王克波  张洪涛  苗立光  徐敏 《中国预防兽医学报》2001,23(2):121-124

将转化节瘤拟杆菌（D.nodosus)纤毛蛋白（Pili）和绵羊白细胞介素2（oviIL2)融合基因表达质粒的工程菌BL－21，在含酸苄青霉素营养肉汤培养基中表达，离心获得菌体沉淀物，裂解后配制成Pili-oviIL2融合基因工程疫苗。用加佐剂和不加佐剂的Pili-oviIL2融合基因工程疫苗分别接种2只健康家兔，21天后接种第2次；定期采血，用对流免疫电泳检测试验兔的体液免疫反应。结果发现，加佐剂和不加佐剂的Pili-oviIL2融合基因工程疫苗免疫兔7天即可产生相应抗体，抗体在免疫血清中可维持6个月以上。进一步试验将不加佐剂的Pili-oviIL2融合基因工程疫苗接种3只健康绵羊，同样21天后接种第2次，定期采血，用对流免疫电泳检测试验绵羊的体液免疫反应。同时用Pili基因工程疫苗接种2只绵羊作对照。结果3只绵羊接种Pili-oviIL2融合基因工程疫苗后，分别于7天和14天产生相应的抗体，而接种Pili基因工程疫苗的绵羊于28天产生相应的抗体；被免疫绵羊血清中的抗体可维持6个月以上。用Pili-oviIL2融合基因工程疫苗接种兔和绵羊的免疫试验表明，Pili-oviIL2融合基因工程疫苗具有较好的体液免疫应答反应，重组OviIL2在融合基因工程疫苗中具有良好的佐剂作用。  相似文献   

Adjuvant Analgesics in Acute Pain Management     

《Veterinary Clinics of North America: Small Animal Practice》2019,49(6):1127-1141

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Soil microbial community response to surfactants and herbicides in two soils     

《Applied soil ecology》2014

The environmental impacts of herbicides on desirable plants and the soil biota are of public concern. The surfactants that are often used with herbicides are also under scrutiny as potentially harmful to soil biological systems. To address these concerns, we used two soils, a silt loam and a silty, clay loam from south central Missouri, to investigate the impacts of herbicides and surfactants on soil microbial communities using phospholipid fatty acid (PLFA) analysis. The surfactants used in this study were alkylphenol ethoxylate plus alcohol ethoxylate (Activator 90), polyethoxylate (Agri-Dex), and a blend of ammonium sulfate, drift reduction/deposition polymers and anti-foam agent (Thrust). The herbicides were glyphosate, atrazine and bentazon. Surfactants and herbicides were applied to soils at label rate, either alone or combined, to 4000 g soil per pot. The two soils differed in history, texture, some chemical characteristics and several microbial community characteristics. A few of the chemicals altered some of the components of the microbial community after only one application of the chemical at field-rate. The Cole County, MO silt loam showed larger changes in the microbial community with application of treatments. For the Boone County, MO silty clay loam, Activator 90, Agri-Dex and bentazon treatments increased microbial biomass determined by PLFA; Thrust decreased PLFA markers, bacteria to fungi ratio; and Agri-Dex at both rates decreased monounsaturated fatty acids. Changes in the microbial community due to herbicides or surfactants were minimal in this study of a single application of these chemicals, but could be indicators of potential long-term effects. Long-term studies are needed to determine the changes in the microbial community after several years of annual applications of herbicides and surfactants on a wide array of soil types and management practices.  相似文献   

Adjuvant and immunostimulatory effects of a D-galactose-binding lectin from Synadenium carinatum latex (ScLL) in the mouse model of vaccination against neosporosis     

Mariana R D Cardoso  Caroline M Mota  Damaso P Ribeiro  Pablo G Noleto  William B F Andrade  Maria A Souza  Neide M Silva  Tiago W P Mineo  José R Mineo  Deise A O Silva 《Veterinary research》2012,43(1):76

Vaccination is an important control measure for neosporosis that is caused by a coccidian parasite, Neospora caninum, leading to abortion and reproductive disorders in cattle and serious economic impacts worldwide. A D-galactose-binding lectin from Synadenium carinatum latex (ScLL) was recently described by our group with potential immunostimulatory and adjuvant effects in the leishmaniasis model. In this study, we evaluated the adjuvant effect of ScLL in immunization of mice against neosporosis. First, we investigated in vitro cytokine production by dendritic cells stimulated with Neospora lysate antigen (NLA), ScLL or both. Each treatment induced TNF-α, IL-6, IL-10 and IL-12 production in a dose-dependent manner, with synergistic effect of NLA plus ScLL. Next, four groups of C57BL/6 mice were immunized with NLA + ScLL, NLA, ScLL or PBS. The kinetics of antibody response showed a predominance of IgG and IgG1 for NLA + ScLL group, whereas IgG2a response was similar between NLA + ScLL and NLA groups. Ex vivo cytokine production by mouse spleen cells showed the highest IFN-γ/IL-10 ratio in the presence of NLA stimulation for mice immunized with NLA + ScLL and the lowest for those immunized with ScLL alone. After parasite challenge, mice immunized with NLA + ScLL or ScLL alone presented higher survival rates (70-80%) and lower brain parasite burden as compared to PBS group, but with no significant changes in morbidity and inflammation scores. In conclusion, ScLL combined with NLA was able to change the cytokine profile induced by the antigen or lectin alone for a Th1-biased immune response, resulting in high protection of mice challenged with the parasite, but with low degree of inflammation. Both features may be important to prevent congenital neosporosis, since protection and low inflammatory response are necessary events to guide towards a successful pregnancy.  相似文献   

Adjuvants: What a Difference 15 Years Makes!     

《Veterinary Clinics of North America: Food Animal Practice》2019,35(3):391-403

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Role of Surgery in Multimodal Cancer Therapy for Small Animals     

Sarah Boston  Ralph A. Henderson Jr. 《Veterinary Clinics of North America: Small Animal Practice》2014

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Effect of lipopolysaccharide on intranasal administration of liposomal Newcastle disease virus vaccine to SPF chickens     

Li-Ping Tseng  Chwei-Jang Chiou  Chien-Chung Chen  Ming-Chung Deng  Tze-Wen Chung  Yi-You Huang  Der-Zen Liu   《Veterinary immunology and immunopathology》2009,131(3-4):285-289

In order to potentiate the low immunogenicity of the inactivated Newcastle disease virus immunized into chickens by mucosal route, liposomes as a drug delivery system and LPS (lipopolysaccharide) as an immuno-stimulator were evaluated. Here, we report a new nasal delivery system of inactivated Newcastle disease virus (NDV) vaccine. The intranasal vaccine was based on different lipids to form MLV (multi-lamellar vehicles) liposomes. The liposomes had combined carrier and adjuvant activities, which induced strong systemic (serum) and local (lung and nasal) humoral responses in SPF (specific-pathogen-free) chickens, and provided protective immunity. PC-Lip (phosphatidylcholine-liposome) elicited significant mucosal secretary immunoglobulin A (s-IgA) levels (p < 0.05) in tracheal lavage fluid and serum IgG levels (p < 0.05). In response to virulent viral challenge, birds treated with PBS (phosphate buffered saline) as control group died, whereas 80% of chickens which received PC-Lip, PC-Lip-LPS, PS-Lip (phosphatidylserine-liposome), and PS-Lip-LPS survived. HAI titers were 1:2560 in the PS-Lip-LPS group and 1:1280 in the PC-Lip, PC-Lip-LPS, and PS-Lip groups after two vaccinations. The results suggest that PC-Lip or PS-Lip might thus be suitable as a potential adjuvant for mucosal vaccination against NDV in chickens.  相似文献   

Protection against Toxoplasma gondii brain cyst formation in mice immunized with Toxoplasma gondii cytoskeleton proteins and Lactobacillus casei as adjuvant     

Federico Martínez-Gmez  Luis Francisco García-Gonzlez  Ricardo Mondragn-Flores  Carlos Ramn Bautista-Garfias 《Veterinary parasitology》2009,160(3-4):311-315

The aim of the study was to evaluate the protection generated in mice against Toxoplasma gondii brain cyst burden by vaccination with T. gondii cytoskeleton proteins using Lactobacillus casei as adjuvant. One hundred and sixty-eight NIH mice were randomly allocated into eight groups of 21 mice each. Animals were immunized as follows: in group 1 with Toxoplasma lysate antigen (TLA) in Freund's modified adjuvant, containing L. casei (FMA), in group 2 with Toxoplasma cytoskeleton proteins (TCPs) in FMA, in group 3 with FMA, in group 4 with phosphate buffered saline (PBS), in group 5 with L. casei dead by heath (Lc), in group 6 with Freund's complete adjuvant (FCA), in group 7 with TLA in FCA, and in group 8 with TCP in FCA. Mean brain cyst burden (±S.E.M.) was assessed in mice 8 weeks after challenge with T. gondii Me49 strain (20 cysts per mouse). The percentages of reduction in cyst burden per brain (P < 0.01) as compared with the group 4 (control: mean 3181 ± 97.5) were 77.25% (724 ± 98) in group 1, 88.02% (381 ± 97.5) in group 2, 38.92% (1943 ± 130.3) in group 3, 44.31% (1771.4 ± 102) in group 5, 59.28% (1295.2 ± 99.1) in group 7 and 55.69% (1409.5 ± 89.9) in group 8. In order of importance, the best protection was obtained in groups 2, 1, 7, 8, 5 and 3. Noticeably the mice inoculated with L. casei alone showed a significant reduction in T. gondii brain cysts (P < 0.01), while those animals treated with FCA alone did not. Additionally, IgM anti-T. gondii antibody levels, as determined by ELISA 2 weeks after challenge, were highest in group 2 (P < 0.01) than in the other seven groups. Results suggest that T. gondii cytoskeleton proteins with L. casei as adjuvant constitute a good anti-toxoplasmosis vaccine candidate.  相似文献   

不同方法制备的佐剂对油乳剂疫苗稳定性的影响   总被引：1，自引：0，他引：1  

刘田生  马文芝  李继蓉 《天津农学院学报》2000,7(2):8-10

利用A、B、C三种不同方法制备佐剂，并对其制备的油乳剂疫苗作室温、4℃冷藏和冷冻处理，结果表明疫苗的乳化效果及稳定性依次为A、B、C三组，二次乳化疫苗也符合上述规律，但疫苗的稳定性及保存期差于常规疫苗。  相似文献