Serological detection of hepatitis B viral infection by a panel of solid-phase enzyme-linked immunosorbent assays (ELISA).

Immunoassays for the detection of hepatitis B virus (HBV) in biological samples were developed. Using recombinant HBV antigens (Ags) and HBV-specific antibodies (Abs), we designed and evaluated a panel of enzyme-linked immunosorbent assays (ELISAs) detecting the main hepatitis B-related viral markers, namely HBV surface Ag (HBsAg), HBV e Ag (HBeAg), Abs to HBsAg (anti-HBs), Abs to HBV core Ag (anti-HBc) and Abs to HBeAg (anti-HBe), in blood serum. The ELISAs were validated using a panel of prescreened, by commercial tests, serum samples.

A skeletal muscle troponin T specific ELISA based on the use of an antibody against the soluble troponin T (16-31) fragment.

Proteolytic degradation of muscle, which occurs post-mortem as part of the meat-ageing process, results in the production of protein fragments. In beef, degradation of skeletal muscle troponin T (TnT) results in the generation of a 16-residue long peptide (TnT (16-31)), identified in trichloroacetic acid (TCA) soluble extracts. We report the development of a competitive enzyme-linked immunosorbent assay (ELISA) for the quantification of TnT (16-31), using polyclonal antibodies raised against synthetic TnT (16-31).