objective(s):typhoid fever is a dreadful disease of a major threat to public health in developing countries. vaccination with bacterial immunodominant components such as surface proteins may prove as a potent alternative to live attenuated vaccines. invh, an important part of needle complex in type three secretion system (ttss) plays important role in efficient bacterial adherence and entry int...

conclusions the study results indicated that the neonatal hbv immunization induced a long-term protection against hbv and was very efficacious in reducing chronic hbv infection rate in vaccinated young adults in iran. results anti-hbs seropositivity rate was detected in 224 of 510 [95% ci: 39-47] young adults. breakthrough infection (positive sera for anti-hbc without chronic infection) was obs...

background : immunogenicity of streptokinase (stk), as a thrombolytic drug, have limited its clinical use. elimination of the amino acid residues that are responsible for immunogenicity while don’t affect the bioactivity of stk is worthy. recently, we modified the stk through elimination of 42 amino acids from its’ c-terminal and assessed its bioactivity in vitro . objective : in this study, bi...

background: hepatitis b virus potentially accelerates graft rejection and mortality in renal transplantation population. vaccination of graft candidates without prior immunization against hbv seems essential before transplantation but some candidates of transplantation have not received hbv vaccine at the time of receiving graft. we aimed to evaluate immunogenicity of an enhanced regimen (4 dos...

introduction and aims: in order to prevent liver cirrhosis and hepatocellular carcinoma in later life, it is essential to prevent hepatitis b virus (hbv) infection in infants. despite the availability of an effective vaccine, hepatitis b still continues to be a significant health problem. the aim of this study is to reveal the efficacy of passive and active immunoprophylaxis for preventing peri...

conclusions hcv gpe2 is an ideal target for hcv vaccine. prediction of epitope immunogenicity and characterization on the basis of peptide sequences will be significantly helpful for development of a heterologous vaccine against hcv variants. results many b-cell and t-cell epitopes predicted in gpe2 were found conserved among hcv 3a genotypes whereas few were conserved in other genotypes antici...

objective: the brucella melitensis virb operon, encoding a type iv secretion system (t4ss), is required for intracellular replication and persistent infection in the mouse model. the product of the second gene of the virb operon, virb2, is predicted to be localized at the bacterial surface, where they could potentially interact with host cells. studies to date have focused on characterization o...

objective: acinetobacter baumannii (a. baumannii) is a major hospital pathogen with a high capacity to resist most common anti-microbial agents. a. baumannii is the etiologic agent for various illnesses including pneumonia, meningitis, and bloodstream infections. biofilm associated proteins (bap) are specific cell surface proteins essential for the formation of biofilm and play a main role in i...

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background: echinococcosis is a zoonotic parasitic disease of humans and various herbivorous domestic animals transmitted by the contact with domestic and wild carnivores,mainly dogs and foxes. the aim of this study is the production, purification and evaluation immunogenicity of new construction of eg95 protein. methods: the recombinant plasmid pet32-a+ used for eg95 expression was constructed...