疫苗(英文)最新文献

{"title":"A New Immunosuppressive Protein in Pig Spleen","authors":"H. Fu, Juan Feng, S. Fan","doi":"10.4236/WJV.2014.43013","DOIUrl":"https://doi.org/10.4236/WJV.2014.43013","url":null,"abstract":"Chronic stress has been the popular phenomenon in the modern society. But we have not yet resolved the problem effectively. A novel protein in pig spleen, which possesses immunosuppressive activity, has been purified in this study. Its molecular weight about 200 kDa and three subunits composition were fractionated by SDS-PAGE. The protein inhibited mouse T-lymphocyte proliferation by the induced concanavalin A (ConA) and regulatory volume decrease (RVD), which may be due to the decreased Kv1.3 expression and activity. In addition, we have raised successfully its polyclonal antibody, which could reverse the inhibited lymphocyte proliferation by the immuno-suppressive protein. And the antibody could be used to coat plate for ELISA assay. Therefore, the antibody will have the potential to provide a basis for applying to clinical stress diseases in the future.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retrospective Evaluation of Intussusception in Under-Five Children in Nigeria","authors":"B. Tagbo, J. Mwenda, C. Eke, T. Oguonu, Sebastin Ekemze, U. Ezomike, Bo Edelu, O. Amadi, I. Okeke, Okechukwu S. Ani, R. Nnani, Vina Okafor, H. Okafor, E. Obidike, E. Abanida, C. Elemuwa, T. Odetunde","doi":"10.4236/WJV.2014.43015","DOIUrl":"https://doi.org/10.4236/WJV.2014.43015","url":null,"abstract":"Background: Assessment of the safety profile of the new rotavirus vaccines in Africa requires base-line epidemiological data on intussusception. Hence, this study was aimed at describing the prevalence and associated factors of intussusception in under-five children in Enugu, Southeast, Nigeria. Methods: This was a retrospective descriptive study involving the sixty reported cases of intussusception in under-five children admitted in a hospital in Enugu between 2007 and 2012. Cases of intussusception were selected using the Brighton collaboration intussusception working group level I diagnostic criteria. Information sought from the patients’ folders included demographic characteristics and clinical manifestations including history of previous rotavirus vaccination, duration of illness prior to presentation, diarrhoea, vomiting, passage of red currant jelly-like stool, abdominal mass and distension, method of diagnosis, treatment option(s) employed and their outcomes. The data was analyzed using SPSS version 17.0. Results: The majority of the cases were aged less than one year (53; 88.3%) while the average incidence of intussusception was 0.1 per 1000. None of the cases had received rotavirus vaccinations. The common clinical presentations were vomiting, 55 (17.2%), passage of red currant stool 50 (15.6%), fever 50 (15.6%) and abnormal/absent bowel sound 43 (15.9%). Diagnosis was essentially with the aid of abdominal ultrasonography, 38 (63.3%) while surgery (laparotomy) was the treatment of choice in most cases 48 (80.0%). The case fatality rate was 3 (5.0%). Conclusion: None of the cases studied could be directly linked to rotavirus vaccinations. But seasonal peak incidence coincided with rotavirus diarrhea peak incidence. Efforts should be made to institute post-rotavirus vaccine licensure prospective surveillance study in order to fully determine any relationship between rotavirus vaccination and intussusception in Enugu, South east, Nigeria.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proportionate Target Population Estimates Used by National Immunization Programmes in Sub-Saharan Africa and Comparison with Values from an External Source","authors":"David W Brown, A. Burton, M. Dobó, R. Mihigo","doi":"10.4236/WJV.2014.43017","DOIUrl":"https://doi.org/10.4236/WJV.2014.43017","url":null,"abstract":"Background: In order to effectively plan the delivery of immunization services, manage stock and supply levels and target interventions, national immunization programmes (NIP) must have an estimate of the target population they serve. To overcome challenges with target population estimation, some NIPs apply “rule-of-thumb” conversion factors to total population estimates. We compare these proportionate target population values with those from an external source. Methods: Using data reported by national immunization programmes in sub-Saharan Africa, we computed the proportionate target population as the number of births, surviving infants and children under 5 years of age, respectively, as a proportion of the total population size. We compared these values with those estimates computed from United Nations Population Division (UNPD) data. We then recomputed NIP target population sizes using the proportionate target population values from the UNPD applied to the total population size reported by NIP. Results: Data were available from 47 sub-Saharan Africa countries. Births as a proportion of the total population were greater within reports from NIP (median, 0.0400; IQR: 0.350 - 0.0437) compared to values from UNPD estimates (median, 0.0364; IQR: 0.0332 - 0.0406). Similar patterns were observed for surviving infants (median: NIP, 0.0360; UNPD, 0.0337) and children under 5 years of age (median: NIP, 0.1735; UNPD, 0.1594). The percent difference in proportionate target population ratios between reports from NIPs and the UNPD was >10% in 23 countries for births, in 18 countries for surviving infants, in 15 countries for children under 5 years of age. After re-computing target populations using UNPD proportionate target population values applied to NIP reported total population, recomputed administrative coverage levels for the third dose of DTP containing vaccine were higher in 32 of the 47 countries compared to reported administrative coverage levels. Conclusion: Because childhood immunization-related target populations are among the more difficult ones to accurately estimate and project, immunization programmes in sub-Saharan Africa are encouraged to include a critical assessment of the target population values, in conjunction with their national statistics system, as part of the on-going programme monitoring process.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distinct Cytokine Profiles in Patients with Oligoarticular Juvenile Idiopathic Arthritis after in Vitro Blockade of Interleukin (IL)-1 and Tumor Necrosis Factor (TNF)-α","authors":"M. Kirchner, L. Strothmann, A. Sonnenschein, W. Mannhardt-Laakmann","doi":"10.4236/WJV.2014.43014","DOIUrl":"https://doi.org/10.4236/WJV.2014.43014","url":null,"abstract":"Oligoarticular juvenile idiopathic arthritis (oJIA) is an antigen-driven and lymphocyte-mediated autoimmune disorder with irregularity in the adaptive immune system. Auto reactive T cells, activated by cartilage-derived auto antigens, produce pro-inflammatory cytokines as IFN-γ and IL-17. Failure of regulatory T cells leads to decreased anti-inflammatory cytokine IL-10 production and results in the loss of immune tolerance. This activation of innate and adaptive immunity stimulates the release of pro-inflammatory cytokines IL-1, IL-6 and TNF-α. Thus, inhibition of these cytokines is considered as an appropriate therapeutic strategy for oJIA. The aim of this study was to investigate whether the blockade of a single cytokine pathway in the present cytokine setting causes an unfavourable imbalance in the cytokine system or whether the blockade is sufficient to suppress the inflammatory condition. We examined the cytokine secretion after in vitro inhibition of IL-1 and TNF-α of patients with oJIA and healthy subjects. This single center cohort study consisted of oJIA affected children and control subjects. Cytokine profiles from cell culture supernatants were examined with multiplex fluorescent bead immunoassay by flow cytometry. Adalimumab prevents highly effective and very selective effect of the cytokine TNF-α. Due to its structure, the mode of action of etanercept is difficult to display. In addition, adalimumab and etanercept appear in vitro suppressive to IFN-γ. The efficiency of both substances is particularly supported by the increased secretion of anti-inflammatory cytokine IL-4. In contrast, anakinra unselectively inhibits the pro-inflammatory macrophage cytokines. To conclude, our observations suggest that inhibition of IL-1 or TNF-α may contribute to the unselective decline of other pro-inflammatory cytokines in oJIA patients. The selective anti-inflammatory effect of cytokine inhibitors is most likely supported by an increase of IL-4 or IL-10. It still remains to be elucidated whether the reduced IFN-γ secretion is maybe causative for the increased susceptibility to infections with opportunistic pathogens.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distinct Cytokine Profiles in Patients with Oligoarticular Juvenile Idiopathic Arthritis after in Vitro Blockade of T Cells by Cyclosporine and Abatacept","authors":"L. Strothmann, M. Kirchner, A. Sonnenschein, W. Mannhardt-Laakmann","doi":"10.4236/WJV.2014.43016","DOIUrl":"https://doi.org/10.4236/WJV.2014.43016","url":null,"abstract":"Oligoarticular juvenile idiopathic arthritis (oJIA) is an antigen-driven and lymphocyte-mediated disorder affecting the adaptive immune system. Auto reactive T cells produce pro-inflammatory cytokines as IFN-γ and IL-17. Failure of regulatory T cells leads to decreased production of anti-inflammatory IL-10 and results in the loss of immune tolerance. Therapeutic strategies suppress T cell dependent immune responses and consequently inhibit the process of inflammation. The aim of the study was to investigate the effect of T cell suppression on the cytokine network in oJIA patients. Therefore we examined the cytokine concentration after in vitro inhibition of T cells by cyclosporine and abatacept in patients with persistent oJIA and healthy control subjects. This single center cohort study consisted of oJIA affected children and control subjects. Cytokine profiles from cell culture supernatants were examined with multiplex fluorescent bead immunoassay by flow cytometry. High amounts of IL-17 were only observed in the collective of oJIA patients after T cell stimulation. Cyclosporine suppresses its concentration effectively. IL-2 and IFN-γ are present in both groups. We found IL-6 and TNF-α in high concentrations after T cell activation. While TNF-α concentration is suppressed by both drugs, IL-6 concentration remains high in oJIA patients. Concentrations of IL-4 and IL-10 were not found to be influenced in status of activation or suppression. In conclusion, the results of the present study imply that IL-17 is the crucial T cell cytokine in oligoarticular JIA. Only cyclosporine could inhibit the secretion of IL-17 effectively. IL-2 and IFN-γ are not specific for oligoarticular JIA. Both cytokines are found as well in healthy control subjects after T cell stimulation. Relevant pro-inflammatory macrophage cytokines in oligoarticular JIA are TNF-α and IL-6. T cell suppression by cyclosporine and abatacept inhibits TNF-α but not IL-6 effectively. Production of anti-inflammatory cytokines is not influenced by T cell suppression.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oral Administration Following Subcutaneous Administration of FCV Vaccines Enhances Vaccine Efficacy against Challenge of a Highly Virulent Vs Feline Calicivirus","authors":"Sing Rong, K. Floyd-Hawkins, V. King","doi":"10.4236/WJV.2014.42010","DOIUrl":"https://doi.org/10.4236/WJV.2014.42010","url":null,"abstract":"Feline calicivirus (FCV) is a common cause of upper respiratory and oral disease in cats. Highly virulent systemic strains of FCV (vs FCV) have been described. These vs FCV isolates cause characteristic edema, cutaneous ulcers and other clinical signs typically associated with FCV infection. Vs FCV isolates also cause high mortality even in previously vaccinated cats. We reported previously that the FCV serum cross-neutralization profile of cat serum generated using the oralnasal route of administration is broader than with subcutaneous administration (SC), as measured with a 26-FCV viral panel (Rong et al., Virus Research 122:95-108, 2006). In this report, we tested the in vivo ef- ficacy of the FCV vaccine, in a 4-way (FCV-FHV-FPV-FCp) format, by using a highly virulent vs FCV- 33585 as the challenge virus. Vaccines were administered as 2-dose subcutaneouly (SC/SC), or subcutaneously followed by orally (SC/Oral). The mortality induced by vs FCV-33585 in unvaccinated control cats was 78% (7 out of 9 cats). The mortality decreased to 44% (4 out of 9 cats) with cats vaccinated with the 4-way vaccine given SC/SC. However, when this vaccine was given SC/Oral, the mortality decreased to 10% (1 out of 10 cats). The clinical scores, calculated based on frequency and severity of various clinical signs, correlated with mortality data. These results demonstrated that oral administration of FCV vaccines, as the second dose following the first dose of subcutaneious administration, ehances FCV efficacy against challenge of a highly virulent vs FCV. We propose that not only oral vaccination offers convenience and needle-free inoculation, it also enhances FCV vaccine efficacy.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Profile of Maternally Derived Antibody in Broiler Chicks and In-Ovo Vaccination of Chick Embryo against Newcastle Disease","authors":"G. O. Okwor, A. El-Yuguda, S. S. Baba","doi":"10.4236/WJV.2014.42009","DOIUrl":"https://doi.org/10.4236/WJV.2014.42009","url":null,"abstract":"In this study, we determined the suitability of lentogenic LaSota and naturally occurring avirulent I2 vaccine strains of Newcastle disease (ND) virus for efficacious in-ovo vaccination of broiler chickens. A total of 114 embyonated eggs divided into five groups (A, B, C, D and E) consisting of 25 eggs in each of groups A and B, 20 eggs in each of groups C and D and 24 eggs in group E were used in the study. Eighteen-day-old embryonated eggs in group A were vaccinated in-ovo with ND-I2 vaccine while the same age of embryos in group B were vaccinated with ND-LaSota. Thirteen-day-old embryonated eggs in groups C and D were vaccinated with ND-I2 and ND-LaSota respectively. Group E served as unvaccinated control. There was significant difference (p 2) used for the in-ovo vaccination were pathogenic for chick embryos, however, ND-I2 vaccine was better tolerated when administered to 18-day-old chick embryo.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increased Susceptibility to Pneumococcal Disease in Sjögren Syndrome Patients","authors":"M. Ercibengoa, M. Alonso, J. Marimón, J. R. Saenz-Dominguez, E. Perez-trallero","doi":"10.4236/WJV.2014.42007","DOIUrl":"https://doi.org/10.4236/WJV.2014.42007","url":null,"abstract":"Susceptibility to pneumococcal infections in Sj?gren syndrome (SS)―an autoimmune inflammatory disease―patients is not well known, although these patients frequently develop respiratory diseases. The relative risk of developing pneumococcal disease in SS patients versus diabetes mellitus type 2 (DM-2) patients, matched by age, gender, and length of enrolment was studied. From January 1998 to September 2013 the records of Donostia University Hospital were analyzed, which among other patient’s data includes: number and type of hospital admissions and number and type of laboratory determinations. Streptococcus pneumoniae isolates of the same serotype causing recurrent infections were characterized by PFGE. The study comprised 127 patients in the SS group (69 primary and 58 secondary) and 127 in the DM-2 group as control. In 12 SS patients, (9.4%) 22 pneumococcal disease episodes were detected. Two patients (1.6%) with a single episode each one were observed among DM-2 patients, p = 0.01, RR for SS patients 6 (95% CI 1.4 to 26.3). No differences could be demonstrated between the two groups of patients in infections caused by Staphylococcus aureus or Streptococcus agalactiae. Most pneumococcal serotypes in SS patients belonged to the 13-valent (50%) and 23-valent (75%) anti-pneumococcal vaccine. SS patients are associated with and increased risk of suffering from pneumococcal disease. Vaccination should be considered in this group of patients.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DNA Vaccines Approach: From Concepts to Applications","authors":"V. B. Pereira, Meritxell Zurita-Turk, T. Saraiva, C. P. Castro, B. M. Souza, P. M. Agresti, F. A. Lima, Vanessa Nathalie Pfeiffer, M. Azevedo, C. S. Rocha, D. Pontes, V. Azevedo, A. Miyoshi","doi":"10.4236/WJV.2014.42008","DOIUrl":"https://doi.org/10.4236/WJV.2014.42008","url":null,"abstract":"DNA vaccines are the third generation vaccines based on purified plasmid preparations containing transgenes that encode antigenic/therapeutic proteins or peptides capable of triggering an immune response against a wide range of diseases. This vaccine platform presents several attributes that confer distinct advantages over other vaccine technologies in terms of safety, ease of fabrication and stability. Many aspects, such as antigen expression and especially vector design, are under study because of their great influence on immunogenicity and efficacy of DNA vaccines. In this regard, with the attempt of improving the efficiency of DNA vaccines, co-expression of stimulatory sequences and diverse vector delivery systems are being optimized. With this in mind, this review aims to giving a conceptual approach of DNA vaccines, explaining their mechanisms of action and listing the already licensed veterinary DNA vaccines presented in the market.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4236/WJV.2014.42008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immunostimulatory Effect of Levamisole on the Immune Response of Goats to Peste des petits ruminants (PPR) Vaccination","authors":"Undiandeye Jude Undiandeye, B. Oderinde, A. El-Yuguda, S. S. Baba","doi":"10.4236/WJV.2014.42011","DOIUrl":"https://doi.org/10.4236/WJV.2014.42011","url":null,"abstract":"The use of Levamisole hydrochloride as an immunostimulant has been successful in the control of certain diseases such as Derzsy’s disease in chicken as well as in increasing lymphocytes and weight gain in pigs. However, its use as immunostimulant in the prevention of Peste des petits ruminants (PPR) in goats has not been investigated. In this study, the use of Levamisole in enhancing immune response to PPR vaccination including its effects on weight gain was investigated among groups of goats (groups A, B, C and D). Virus neutralization test was used to determine the antibody profile in vaccinated goats while the total and differential leucocyte counts and body mass index (BMI) were determined using standard procedures. Goats in group A (Levamisole primed and PPR vaccinated) seroconverted to more than 3-folds of the initial pre-vaccination geometric mean titre (GMT) of neutralizing antibody beginning from second week post-vaccination and remained high throughout the period of the experiment. Similarly, there was significant increase (p 0.05) in BMI of animals in other groups throughout the period of the experiment. The results of this study further confirm the immunostimulatory effect of Levamisole when used in combination with a vaccine.","PeriodicalId":57190,"journal":{"name":"疫苗(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70894723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}