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The periplasmic binding protein (P39) antigen of Brucella melitensis 16M was previously identified as Th1 dominant antigens. In this study, the potential for this antigen to function as vaccine against B. melitensis 16M infection in BALB/c mice has been analyzed, and the humoral and cellular immune responses induced have been also characterized. Mice were injected intraperitoneally with live Escherichia...
The increased threat of bioterrorism and the emergence of potentially fatal diseases underscores the need to improve treatments for protecting all segments of the human population including military personnel. New methods need to be developed. The ability of oligodeoxynucleotides containing the CpG motif (CpG ODNs) to promote the production of T H 1-type pro-inflammatory cytokines suggest...
The purpose of this study was to investigate the effects of dietary supplementation with recombinant porcine lactoferrin (rPLF) produced by yeast culture on peripheral lymphocyte proliferation and serum antibody titers in chickens vaccinated against the infectious bursal disease (IBD) virus. Treatment groups were fed with rPLF powder in their diet (2.0%, w/w), and the IBD vaccine was administrated...
Current strategies for cancer gene therapy consist mainly of direct inhibition of tumor cell growth and activation of systemic host defense mechanisms. Cytokine gene-transduced tumor cells have been used as vaccines in clinical trials, which have shown good safety profiles and some local responses but substantial lack of systemic efficacy. Cytokines should be directed at the level of gene selection...
Mucosal immune responses act as the first line of defense against dental caries. In this study, an optimal vaccination strategy was developed to enhance anti-caries mucosal immune responses. Mice and rats were vaccinated intranasally firstly with plasmid pCIA-P encoding PAc antigen of Streptococcus mutans and then with rPAc, or with pCIA-P for twice, or with rPAc protein for twice, respectively. The...
The aim of this study was to investigate the kinetics of virus replication and cellular responses in the lungs following infection with Marek's disease virus (MDV) and/or vaccination with herpesvirus of turkey (HVT) via the respiratory route. Chickens vaccinated with HVT and challenged with MDV had a higher accumulation of MDV and HVT genomes in the lungs compared to the chickens that received HVT...
The effects of a novel adjuvant composed of Quil A, cholesterol, dimethyl dioctadecyl ammonium bromide, and Carbopol (QCDC) on protective immunity against avian coccidiosis following immunization with an Eimeria recombinant protein were determined. Broiler chickens were subcutaneously immunized with isotonic saline (control), Eimeria recombinant profilin alone, or profilin emulsified with QCDC at...
Our previous study demonstrated that chickens immunized subcutaneously with an Eimeria recombinant profilin protein vaccine emulsified in a Quil A/cholesterol/DDA/Carbopol (QCDC) adjuvant developed partial protection against experimental avian coccidiosis compared with animals immunized with profilin alone. Because in ovo vaccination is presently used in commercial applications worldwide throughout...
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