From the Department of Immunology and Allergy, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
Abstract: (3706 Views)
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 fully vaccinated during childhood, antibody titers decreased
with time. Therefore, antibody transfer to infants is negligible. The CL assay is
simple, rapid, and reproducible, offering new possibilities to evaluate humoral
immune mechanisms and phagocytosis in whooping cough.