The intestinal epithelium forms a first line of innate host defense by secretion of proteins with antimicrobial activity against microbial infection. Despite the extensive studies on the antimicrobial host defense in many gastrointestinal tracts, little is known about the antimicrobial defense system of the stomach. The potent antimicrobial peptide buforin I, consisting of 39 aa, was isolated r...

Most infectious agents use mucosal tissues as entry portals, thus, mucosae are frequently defined a first line of defense against pathogens. Mucosal protection generally operates through antibody-mediated and cytotoxic T-cell responses which can be triggered by vaccines. Sublingual vaccination provides many advantages such systemic (both locally at remote sites), besides being needle-free admin...

Summary The term Tc17 cells refers to interleukin 17 (IL-17)-producing CD8 + T cells. While IL-17 is an important mediator of mucosal defense, it also centrally involved in driving the inflammatory response immune-mediated diseases, such as psoriasis, multiple sclerosis, and bowel disease. In this review, we aim gather current knowledge on phenotypic transcriptional profile, vitro vivo generati...

Mucosal vaccination of capsular polysaccharide (PS) of Streptococcus pneumoniae and subsequent creation of the first line of immunological defense in mucosa were examined. Mucosal as well as systemic antibody responses to PS were evoked by peroral or intranasal immunization of BALB/c mice with PS-cholera toxin B subunit (CTB) conjugates entrapped in the alginate microspheres (AM). The bacterial...

Mucosal secretions of the human gastrointestinal, respiratory, and genital tracts contain the immunoglobulins (Ig)G and secretory IgA (sIgA) that function together in host defense. Exactly how IgG crosses epithelial barriers to function in mucosal immunity remains unknown. Here, we test the idea that the MHC class I–related Fc-receptor, FcRn, transports IgG across the mucosal surface of the hum...

Mucosal secretions of the human gastrointestinal, respiratory, and genital tracts contain the immunoglobulins (Ig)G and secretory IgA (sIgA) that function together in host defense. Exactly how IgG crosses epithelial barriers to function in mucosal immunity remains unknown. Here, we test the idea that the MHC class I-related Fc-receptor, FcRn, transports IgG across the mucosal surface of the hum...