Abstract
Background
Diagnosis of intestinal capillariasis depending on microscopic detection of parasitic stages is of low sensitivity, especially in cases with low worm burden. There is a necessity to develop sensitive and specific diagnostic tools of capillariasis for early treatment to avoid complications. Western blot (WB) technique showed promising results for antigen recognition patterns in several parasitic infections.
Aim of the Study
This study is directed to identify and evaluate relevant proteins of intestinal capillariasis crude worm antigens using WB immunodiagnosis.
Materials and Methods
Capillaria crude worm antigens were extracted and analyzed using SDS-PAGE. Sixty serum samples belonging to 3 groups (20 individuals each) were included; Group I (shedding Capillaria in feces), Group II (infected with other parasites) and Group III (negative parasitological results). Reactivity of the resulting bands of Capillaria with serum samples was analyzed using WB technique.
Results
Thirty-two immunoreactive bands were detected in WB analysis representing recognition of proteins with molecular weights (MW) varying from 19 to 110 kDa. Immunodominant proteins of 23.5, 31, 36.5, 40.5 and 44 kDa were recognized, respectively, in 35%, 30%, 85%, 95% and 75% of sera from patients with confirmed capillariasis and in 30%, 25%, 35%, 25%, and 20% of sera from those infected with other parasitic infections. One serum sample from group III gave reaction with 31 kDa band.
Conclusion
Immunodiagnosis of intestinal capillariasis using WB proved that 23.5, 31, 36.5, 40.5 and 44 kDa bands could be considered useful tools for diagnosis of capillariasis.
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Hassan, M.A., Basyoni, M.M.A., Amer, M.F. et al. Antigen Recognition Patterns of Intestinal Capillariasis Using Immunoblot-Based Serodiagnosis. Acta Parasit. 65, 899–905 (2020). https://doi.org/10.2478/s11686-020-00233-y
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DOI: https://doi.org/10.2478/s11686-020-00233-y