Background: Honey bee venom is an important toxin which has various useful properties. Bee venom possesses various peptides including melittin, apamin, adolapamin and mast cell degranulating peptide. It appears to stimulate cortisone secretion, enhances antibody production, and affects cytokine production.
Aim: The aim of the work is to study changes in levels of complement system proteins, C3 and C4, together with C-reactive proteins and rheumatoid factors (CRP and RF) in response to bee venom in subjects exposed naturally to sting with honey bee workers. Subjects and Methods: Subjects (12) were randomly selected from patients visiting El-Mostafa bee house, Elmarg, cairo, Egypt; to get natural bee venom therapy for various diseases. Blood samples (24) were collected from these volunteers, before and after honey bee sting, at the laboratory of Egypt Air Hospital, Cairo, Egypt following the standard protocol. Serum levels of C3 and C4 were measured by radial immunodiffusion technique. CRP was quantitatively measured by in vitro diagnostic test using auto analyzer (Dimension® EXEL) clinical chemistry system. Serum RF was measured by Rapid latex agglutination test for qualitative screening. Result: After exposure of patients to bee sting: all abnormal levels of C3 returned to normal values while abnormal C4 levels did not change; Half of cases that were showing abnormal high CRP levels have dropped to normal levels and All RF positive cases have become negative. Conclusion: The complement system has been activated, in patients, by both classical and alternative pathways before treatment with bee venom where it became only classically activated after treatment. Improved values of both CRP and RF indicate reduction in the inflammatory immune response after exposure of patients to honey bee venom.