neisseria meningitidis is a major causative agent of bacterial septicemia and meningitis in humans. currently, there are no vaccines to prevent disease caused by strains of n.meningitidis serogroup b. the class 1 outer membrane protein (omp) has been named pora which is a cation selective transmembrane protein of 45 kda that forms trimeric pore in the meningococcal outer membrane. pora from ser...

bacillary dysentery, or shigellosis, is a disease of humans in which the colonic epithelium is invaded by bacteria and subjected to inflammatory destruction. the aim of this study was to develop a polymerase chain reaction(pcr) test for detection of virulent shigella spp.. for this purpose, the primers were designed to amplify a 526-bp internal region of the shigella spp. icsa gene, which encod...

background outer membrane protein d (pd) is a highly conserved and stable protein in the outer membrane of both encapsulated (typeable) and non-capsulated (non-typeable) strains of haemophilus influenzae. as an immunogen, pd is a potential candidate vaccine against non-typeable h. influenzae (nthi) strains. objectives the aim of this study was to determine the cytokine pattern and the opsonic a...

Bacillary dysentery, or shigellosis, is a disease of humans in which the colonic epithelium is invaded by bacteria and subjected to inflammatory destruction. The aim of this study was to develop a polymerase chain reaction(PCR) test for detection of virulent Shigella spp.. For this purpose, the primers were designed to amplify a 526-bp internal region of the Shigella spp. icsA gene, which encod...

bordetella pertussis infects the respiratory tract of the human host and causes whooping cough in children. the nature of immunity against bordetella pertussis infection and disease is poorly understood. the aim of this study was to investigate cell mediated immunity in mice immunized with outer membrane component of cell wall, of b. pertussis. a group of mice were immunized with outer membrane...

background and objective: the outer membrane protein w ( ompw ) of vibrio cholerae is involved in stimulating the im- mune response via induction of protective immunity. it also plays an important role in bacterial pathogenesis by increasing the adaptability of pathogenic strains. in this study we aimed to clone v. cholerae ompw gene in the strain x-33 of pichia pastoris. materials and methods:...

background: rotaviruses cause diarrhea in infants and young children worldwide. rotavirus outer capsid protein, vp7 is major neutralizing antigen that is important component of subunit vaccine to prevent rotavirus infection. many efforts have been done to produce recombinant vp7 that maintain native characteristics. we used baculovirus expression system to produce rotavirus vp7 protein and to s...

Objective(s): The porins A and B and also outer membrane vesicles (OMVs) of Neisseria meningitidis are used for vaccine purposes. In the present study, we aimed to design a new vaccine candidate based on a fusion of PorA of serogroups A and B of N. meningitidis admixed with OMV and evaluate it in an animal model.Materials and Methods: Af...