background and aim: in most infections and diseases, to cure and decrease the effect of disease, induction and increasing power of immuno system are necessary. nigella sativa is a plant that has been used for treatment of many diseases. in this survey, the effect of nigella sativa is surveyed in strengthening of monocyte phagocytosis so that the use and mechanism of this plant for strengthening...

background : acanthamoeba castellanii forms a resistant cyst that protects the para-site against the host’s immune response. acanthamoeba type-i metacaspase (acmcp) is a caspase-like protein that has been found to be expressed during the encysta-tions. dictyostelium discoideum is an organism closely related to acanthamoeba useful for studying the molecular function of this protozoan caspase-lik...

background: herbal medicines have been used since ancient times for treatment of a range of diseases and have represented stimulatory effects on the function of innate immunity. objective: to evaluate the effects of zataria multiflora (z. multiflora) on the function of innate immunity including phagocytic activity and tnf-α secretion in animal model. methods: eight balb/c mice were divided into...

objective:at the present study, relationship between phagocytosis of plga particles and combined effects of particle size and surface pegylation was investigated.  materials and methods:microspheres and nanospheres (3500 nm and 700 nm) were prepared from three types of plga polymers (non-pegylated and pegylation percents of 9% and 15%). these particles were prepared by solvent evaporation metho...

statement of problem: patients affected with “early onset periodontitis” (eop), are not similar regarding their neutrophil deficiency and researches have yielded contradictory results in this field. purpose: the purpose of this study was to evaluate different aspects of neutrophils’ activities in peripheral blood of such patients, especially those affected with prepubertal periodontitis and juv...

tuberculosis (tb) and tobacco use are two major alarming global health issues posing immense threats to human populations. mycobacterium tuberculosis (mtb) by activation of macrophages could induce the sequences of cells activation and releases of inflammatory cytokines such as cxcl-8, il-12 and tnf-α which in turn induces the immune system network. however no information is available on other ...

serum opsonic capacity against b. pertussis was studied by using quantitative chemiluminescence (cl), a method known to have several advantages over conventional methods in evaluating opsonization and phagocytosis. sera from unvaccinated infants was shown not to contain opsonins against b. pertussis and in unvaccinated infants suffering from whooping cough, no opsonins were detected. in adults ...

Abstract Phagocytosis is a biological process that plays key role in host defense and tissue homeostasis. Efficient approaches for realtime imaging of phagocytosis are highly desired but limited. Herein, an AIE-active near-infrared fluorescent probe, named TBTCP , was developed fluorescence lifetime phagocytosis. could selectively label the cell plasma membrane with fast staining, wash-free pro...