background: parathyroid hormone is an 84-amino acid peptide secreted by the parathyroid glands. its physiological role is maintenance of normal serum calcium level and bone remodeling. biological activity of this hormone is related to n-terminal 1-34 amino acids. the recombinant form of hormone (1-34) has been approved for treatment of osteoporosis from 2002. in this study, a novel fusion partn...

The aim of this study was to construct, expression of a novel recombinant chimeric protein consisting of Pyruvate dehydrogenase beta subunit (PDHB) and high antigenic region of integral membrane lipoprotein P80 of Mycoplasma agalactiae as a potential diagnostic tool. The full-length sequence of pdhb and a portion of antigenic regions of P80 were selected and analyzed by CLC ma...

As early secreted antigenic target of 6 kDa (ESAT-6) of Mycobacterium tuberculosis (Mtb) is an essential virulence factor and macrophages are critical for tuberculosis infection and immunity, we studied ESAT-6 stimulated IL-6 production by macrophages. ESAT-6 stimulated significantly higher IL-6 secretion by murine bone marrow derived macrophages (BMDM) compared to culture filtrate protein 10 k...

Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of Johne's disease in ruminants and there has been a shift in the public health approach to MAP and human diseases like Crohn's disease. The prevention of infection by MAP in ruminants is thought to deter the high impact of economic losses in the level of dairy industry and possible spreading of this pathogen in dairy prod...

Background: Contraceptive vaccines (CVs) can be used as a valuable and alternative method for the prevention of gestation in humans and animals. These vaccines can have several targets, such as superficial sperm proteins. Vaccines based on sperm antigens are quite efficacious to create a contraceptive effect. However, multi-epitope vaccines are more effective in stimulating the immune system an...

Background: Assisted fertilization procedures are a currently widespread practice to regulate reproduction in humans and animals. The arising question is why the human being manipulating gametes to generate new individuals, if we do not understand yet the molecular mechanism of fertilization?. Successful completion of fertilization in mammals is dependent on three membrane fusion events: 1. the...

objective(s):human cytomegalovirus (hcmv) remains a major morbidity and mortality cause in immuno suppressed patients. therefore, significant effort has been made towards the development of a vaccine. in this study, the expression of the pp65 and gb fusion peptides and fc domain of mouse igg2a as a novel delivery system for selective uptake of antigens by antigen-presenting cells (apcs) in pich...

background: bacterial superantigen staphylococcal enterotoxins (ses), has stimulated polyclonal t cells irrespective of their antigen specificity, resulted a massive release of cytokines, and suggested that they could be assigned as a candidate of new antitumor agents. recent attempts have done to specifically target superantigens towards tumors, subsequently monoclonal antibodies and tumor-rel...

dna coding for the core antigen from hepatitis b virus (hbcag) was amplified, cloned and propagated in e. coli. the core protein was expressed in e. coli and the product was readily detected by western blot. this protein can be used as a diagnostic material in serum screening tests. to increase the level of expression of this antigen in bacteria, two plasmids were constructed in which the gene ...