Development and Optimization of a Homemade ELISA Kit for Detection of Antibodies Against Haemophilus influenzae Type b
Message:
Abstract:
Background
Haemophilus influenzae type b (Hib) infection has high morbidity and mortality rate, especially in children under 5 years of age. Enzyme-linked immunosorbent assay (ELISA) technique is the most used method to detect antibodies against H. influenzae. Available commercial ELISA kits are expensive and not always readily available, particularly for epidemiological studies.
Objectives
This study was performed to develop and optimize a homemade ELISA kit for the detection of Hib anti-polyribosylribitol phosphate (PRP) antibodies in children.
Materials And Methods
To develop and optimize an indirect ELISA method, pure PRP was prepared. The PRP was coupled to bovine serum albumin, using sodium periodate. Then optimal conditions for ELISA, including coating antigen concentration and peroxidase labeled conjugate concentrations, incubation temperature and incubation time, were determined. To confirm the efficacy of optimized kit, 83 serum samples from non-vaccinated children, aged less than 6 years were collected and analyzed, using homemade and commercial ELISA.
Results
The optimal conditions were considered to perform ELISA. Comparison between results obtained from optimized ELISA kit and commercial ELISA kit showed a good agreement.
Conclusions
Taking into account these data, we elaborated a homemade ELISA kit that is an efficacious and cost-effective substitute for commercial kit, in disease control and diagnosis.
Language:
English
Published:
Jundishapur Journal of Microbiology, Volume:9 Issue: 5, May 2016
Page:
6
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