title: Clonorchis sinensis: glutathione S-transferase as a serodiagnostic antigen for detecting IgG and IgE antibodies.
abstract: Human Clonorchis sinensis infection is endemic in East Asian countries. Glutathione S-transferases (GSTs) are anti-oxidant enzymes found in all living creatures as well as in trematodes. In this study, we examined the recombinant 26kDa GST protein of C. sinensis (Cs26GST) for its serodiagnostic antigenicity toward IgG and IgE antibodies by ELISA and immuno-enhanced chemiluminescence, respectively. In IgG ELISA, recombinant Cs26GST showed 33.3% sensitivity and 100% specificity for trematode-infected human sera. In the case of the IgE antibody, recombinant Cs26GST showed 50.0% sensitivity and 93.2% specificity for clonorchiasis infection. We propose that the recombinant Cs26GST is a potent serodiagnostic antigen for detecting C. sinensis-specific IgG and IgE antibodies, and that it be best used as an antigenic cocktail in combination with other antigens.
authors.affiliation: Department of Parasitology, Faculty of Medicine, Chung-Ang University, Tongjak-gu, Seoul, Republic of Korea. hongsj@cau.ac.kr
authors.forename: Sung-Jong
authors.initials: SJ
authors.lastname: Hong
authors.forename: Tae
authors.initials: T
authors.lastname: Yun Kim
authors.forename: Xiao-Xian
authors.initials: XX
authors.lastname: Gan
authors.forename: Li-Ying
authors.initials: LY
authors.lastname: Shen
authors.forename: Kom
authors.initials: K
authors.lastname: Sukontason
authors.forename: Kabkaew
authors.initials: K
authors.lastname: Sukontason
authors.forename: Shin-Yong
authors.initials: SY
authors.lastname: Kang
mesh_terms: D000818:Animals; D000909:Antibodies, Helminth / Q000097:blood; D000947:Antigens, Helminth / Q000276:immunology*; D003003:Clonorchiasis / Q000175:diagnosis* / Q000276:immunology; D003004:Clonorchis sinensis / Q000201:enzymology* / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D005982:Glutathione Transferase / Q000276:immunology*; D006801:Humans; D007073:Immunoglobulin E / Q000097:blood*; D007074:Immunoglobulin G / Q000097:blood*; D008163:Luminescent Measurements; D012680:Sensitivity and Specificity
chemical_list: D000909:Antibodies, Helminth; D000947:Antigens, Helminth; D007074:Immunoglobulin G; D007073:Immunoglobulin E; D005982:Glutathione Transferase