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| Registros recuperados: 81 | |
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| Rashid,A; Rasheed,K; Asim,M; Hussain,A. |
| To be granted a product license, a vaccine must present adequate quality, safety and efficacy. Studies on these criteria often utilize target species in a laboratory setting. Vaccines that had been proven effective during laboratory analysis may not present the same features when sold on a large scale, after encountering field conditions, and furthermore, can even produce complications. Measures are already in place to detect adverse reactions as reported by veterinarians to manufacturers, so that vaccines under suspicion of failing can be identified and investigated. The present review article describes the main problems, specifically adverse reactions and lack of efficacy, that have been encountered following release of vaccines for general use. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vaccine; Quality; Safety; Efficacy; Adverse reactions. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000100003 |
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| Albas,A.; Fontolan,O. L.; Pardo,P. E.; Bremer Neto,H.; Sartori,A.. |
| In this study, we compared the levels of neutralizing antibodies induced by inactivated rabies vaccine in cattle by using three alternative immunization procedures. Forty-five bovines (breed nelore) were then organized in three groups (A, B and C, with 15 animals/group). Group A received only one vaccine dose at day zero and Group B received the first dose at day zero and then another dose at day 30 (early booster). Group C was also immunized with two doses; however, the booster was postponed until day 180 after the first dose (delayed booster). Blood samples were withdrawn at days zero (before the first dose) and 30, 210, 390, and 540 after the beginning of immunization and the antibody titers were evaluated by mouse neutralization test. The protocol used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabies; Vaccine; Cattle; Antibody; Neutralization. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000300010 |
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| Miyasato,PA; Ramos,CRR; Abreu,PAE; Dias,WO; Nascimento,C; Ho,PL; Kawano,T. |
| Schistosomes utilize proteinases to accomplish several activities such as tissue penetration, tissue digestion and evasion of host immune responses. Cathepsin L is a cysteine proteinase of the papain superfamily detected in their gut lumen which indicates that this enzyme contributes to the proteolysis of ingested hemoglobin. Due to the roles played in the schistosome biology, proteolytic enzymes are considered potential targets for developing and guiding antischistosomal therapies. In the present work, the cathepsin L1 cDNA coding of Schistosoma mansoni was cloned into the pAE vector that provides high-level expression of heterologous proteins in Escherichia coli. The recombinant protein was expressed as inclusion bodies, purified under denaturing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Schistosoma mansoni; Cysteine proteinase; Cathepsin L1; Vaccine; Immunogenicity. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000200011 |
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| Ayres,J.A.; Peraçoli,M. T. S.; Barraviera,B.. |
| Rabies is a viral acute encephalitis of progressive and fatal outcome, particular of hot-blooded animals, and accidentally affecting men. Since it is a zoonosis with different animal species acting as a reservoir in the nature, this disease is a great public health problem in several countries in development. Prophylactic treatments for human rabies started in 1885 with Louis Pasteur, and developed in order to provide higher protection and lower incidence of side effects. Today, treatments of pre and post-exposure to the virus are well established, with excellent results of protection for individuals exposed to animals potentially contaminated by the rabies virus. These treatments consist of utilising the vaccine isolatedly or in combination with equine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human rabies; Prophylaxis; Heterologous serum; Vaccine. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000100003 |
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| AIHARA, Naoyuki; HORIUCHI, Noriyuki; HIKICHI, Nanase; OCHIAI, Mariko; HOSODA, Yuko; ISHIKAWA, Yoko; SHIMAZAKI, Yoko; OISHI, Koji; 堀内, 雅之. |
| Infectious bursal disease (IBD) is characterized by immunosuppression due to the depletion of lymphocytes in the atrophied bursa of Fabricius (BF). We have sometimes encountered contradictory findings: chickens infected with the vaccine IBD virus (IBDV) strain have sometimes exhibited a highly atrophied BF, but not immunosuppression. In this study, chickens administered vaccine or wild-type strains of IBDV were later vaccinated with the B1 strain of the Newcastle disease virus (NDV). Bursal changes were examined histologically with a focus on the bursal follicle. The immunoreactivity to NDV was also evaluated with the hemagglutination inhibition test. In gross examination, we observed a few chickens with a severely atrophied BF in vaccine... |
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Palavras-chave: Bursal follicle; Infectious bursal disease; Vaccine. |
| Ano: 2015 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4148 |
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| Nishikawa, Yoshifumi. |
| Neosporosis is caused by the intracellular protozoan parasite Neospora caninum. This major disease-causing pathogen is responsible for inducing abortion in cattle, and these adverse events occur sporadically all over the world, including Japan. Currently, there are no vaccines on the market against infection with N. caninum. Because live and attenuated vaccines against N. caninum have had safety and effectiveness issues, development of a next-generation vaccine is urgently required. To develop a vaccine against neosporosis, my laboratory has been focused on the following: 1) understanding the host immune responses against Neospora infection, 2) identifying vaccine antigens and 3) developing an effective antigen-delivery system. The research strategy taken... |
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Palavras-chave: Adjuvant; Cattle; Neospora caninum; Neosporosis; Vaccine. |
| Ano: 2017 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4544 |
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| Taylor-Robinson, Andrew W.; Heal, Karen G.. |
| Malaria is the world's most important parasitic disease, imposing a massive health burden on people living in the tropics, often in the poorest countries. The vast majority of deaths in humans from malaria are caused by one species of the hemoprotozoan, Plasmodium falciparum., against which effective control measures are urgently needed. The global situation has deteriorated in recent times due to increased resistance of the anopheline mosquitoes that transmit P. falciparum to insecticides, and of the parasites themselves to drug therapy. An efficacious and cost-effective vaccine against this parasite is considered a public health priority. A vaccine that targets pre-erythrocytic parasites in the liver could potentially prevent clinical disease by blocking... |
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Palavras-chave: Malaria; Plasmodium falciparum; Liver stage; Vaccine; Cellular immunity. |
| Ano: 2001 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/133 |
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| Fereig, Ragab M.; Nishikawa, Yoshifumi. |
| Toxoplasmosis remains a life-threatening infection of humans and various domestic and wild animals worldwide. It is caused by the obligatory intracellular protozoan parasite Toxoplasma gondii. Peroxiredoxins (Prxs) are a family of antioxidant enzymes that protect cells from oxidative stress from hydroperoxides. In the recent years, several studies have reported the potential use of T. gondii-derived enzymes in triggering protective immunity against T. gondii infection. Therefore, this study was conducted to investigate the immunogenicity and protective efficacy of TgPrx3. In vitro stimulation of peritoneal macrophages with recombinant TgPrx3 protein fused to glutathione-S transferase (TgPrx3-GST) enhanced IL-12p40 production, indicating the... |
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Palavras-chave: Toxoplasma gondii; Peroxiredoxin 3; Vaccine; Immunization. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4569 |
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| Ishigame, T; Takabatake, N; Iseki, H; Ota, N; Koyama, A; Igarashi, I; Nishikawa, Y; Ikehara, Y; Kojima, N; Yokoyama, N; 五十嵐, 郁男; 西川, 義文; 横山, 直明. |
| Oligomannose-coated liposome (OML)-based vaccines have been reported to induce Th1-based immunity against entrapped antigens in immunized animals and to show protective effects against several protozoal diseases. In the present study, we produced a recombinant Babesia rodhaini ribosomal phosphoprotein P0 (rBrP0) that showed immunological cross reactivity with another rodent Babesia parasite, B. microti. We evaluated the efficacy of vaccination with OML-entrapped rBrP0 on B. rodhaini and B. microti infections in mice. Prior immunization with the OML-based rBrP0 vaccine, or with a Freund’s adjuvant-based rBrP0 vaccine, failed to demonstrate any protective effect against lethal infection with B. rodhaini, but the OML-based vaccine did induce protective... |
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Palavras-chave: Oligomannose-coated liposomes (OML); Vaccine; Babesiosis; Babesia rodhaini; Babesia microti; P0. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2383 |
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| KAWASE, Osamu; GOO, Youn-Kyoung; JUJO, Hayato; NISHIKAWA, Yoshifumi; XUAN, Xuenan; 西川, 義文; 玄, 学南. |
| Saponin is the generic name of steroid or triterpene glycosides, and the capacities of some saponins to stimulate both Th1 immune response and production of cytotoxic T cells are useful as vaccine components against intracellular pathogens. Because saponins have been found commonly in starfish, we assessed the potential of starfish, Asterias amurensis and Asterina pectinifera, as adjuvant sources. Crude starfish saponins had hemolytic activities (EC50=10 to 100 μg/ml) and thin layer chromatography indicated heterogeneity of their constituents. When starfish saponis were subcutaneously injected into mice with ovalbumin (OVA), OVA-specific IgG, especially IgG2a instead of IgG1 was produced in mouse blood, suggesting starfish saponins stimulated Th1 type... |
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Palavras-chave: Adjuvant; Saponin; Starfish; Th1 immunity; Vaccine. |
| Ano: 2011 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3587 |
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| Kumagai, A.; Zhang, G.; Jia, H.; Nakamura, C.; Zhang, H.; Goo, Y-K.; Aboge, G. A.; Terkawi, M. A.; Zhou, J.; Nishikawa, Y.; Xuan, X.. |
| A gene encoding Babesia gibsoni thrombospondin-related adhesive protein (BgTRAP), known as a vaccine candidate, was stably expressed in Toxoplasma gondii (Tg/BgTRAP). The molecular weight and the antigenic reaction of recombinant BgTRAP expressed by the Tg/BgTRAP were similar to the original ones expressed by B. gibsoni. To evaluate the antigenicity of the recombinant BgTRAP expressed by T. gondii, the lysates of the recombinant parasite tachyzoites were intraperitoneally injected into mice. The serum collected from Tg/BgTRAP-immunized mouse could react to B. gibsoni parasites, while the serum collected from wild-type T. gondii tachyzoites (Tg/wt)-immunized mice did not. These results indicate that T. gondii could provide a new tool to produce foreign... |
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Palavras-chave: Toxoplasma gondii; Babesia gibsoni; BgTRAP; Expression; Vaccine. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4496 |
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| Caron,LF. |
| Infectious bronchitis virus (IBV) of chickens is currently one of the main diseases associated with respiratory syndrome in domestic poultry, as well as with losses related to egg production. The etiological agent is a coronavirus, which presents structural differences in the field, mainly in the S1 spike protein. The immune response against this virus is complicated by the few similarities among serotypes. Environmental and management factors, as well as the high mutation rate of the virus, render it difficult to control the disease and compromise the efficacy of the available vaccines. Bird immune system capacity to respond to challenges depend on the integrity of the mucosae, as an innate compartment, and on the generation of humoral and cell-mediated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken Bronchitis; Immune response; Vaccine. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200007 |
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| Registros recuperados: 81 | |
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