background: the affinity of an antibody to its antigen is a crucial parameter in its biological activity and performance of an immunoassay such as elisa. affinity of most igg specific mabs are often determined by methods which require labeling of either antigen or antibody, and are sometimes difficult to control, do not always lead to the expected signal and often result in immunological modifi...

background: invariant natural killer cells (inkt) are an important immunoregulatory t cell subset. currently several flow cytometry-based approaches exist for the identifi-cation of inkt cells, which rely on using the 6b11 monoclonal antibody or a combina-tion of anti-vα24 and anti-vβ11 antibodies. objective: the aim of this study was to compare the ability of two flow cytometry-based methods f...

background: myocardial infarction (mi) is one of the most common and serious diseases resulting from coronary artery occlusion and major reduction in blood flow. streptokinase as a thrombolytic is considered the first and most important therapeutic intervention for reperfusion following mi in most countries including iran. our previous study showed that, the prevalence of high antibody titers a...

in order to determine the role of different anti-phospholipid antibodies as an etiologic factor in recurrent pregnancy failure, a prospective study was done on one-hundred and thirty-eight women who had unexplained recurrent pregnancy loss (group i) with one-hundred well-matched women with normal reproductive outcome allocated as control group (gil). sera from 138 patients and 100 controls were...

abstract background a vast variety of factors may cause recurrent pregnancy loss. blood group incompatibility of parents could cause abortion. the examination of couples or twins, blood groups showed that the blood group incompatibility can affect adversely the outcome of pregnancy. couples with blood group incompatibility are more involved in spontaneous miscarriage. antigenes in two different...

A novel lateral flow immunoassay biosensor, combining the receptor-ligand reaction and antigen-antibody was developed for detection of ?-lactam antibiotics in milk. The receptor protein, carboxy-terminal domain sensor-transducer mutant from Bacillus. licheniformis, served as recognition element. Colloidal gold (CG)-labelled antibody-receptor ternary complex applied a signal transducer probe. pr...

We report here the rational design and optimization of an antibody-responsive, DNA-based device that enables communication between pairs otherwise non-interacting proteins. The is designed to recognize bind a specific antibody and, in response, undergo conformational change leads release DNA strand, termed “translator,” regulates activity downstream target protein. As proof principle, we demons...

background: systemic lupus erythematosus (sle) is a chronic autoimmune disease which is characterized by b-cell abnormality and auto-antibody generation. since bacterial infections are the most important causes of mortality in these patients, pneumococcal vaccination is recommended for children with sle. objective: to investigate humoral immunity and specific-antibody formation in response to a...

Objective(s):Multi-epitopic protein vaccines and direction of vaccine delivery to dendritic cells (DCs) are promising approaches for enhancing immune responses against mutable pathogens. Escherichia coli is current host for expression of recombinant proteins, and it is important to optimize expression condition. The aim of this study was the optimization of multi-epitopic HIV-1 tat/pol/gag/env ...