title: Early detection of Schistosoma mansoni infection by touchdown PCR in a mouse model.
abstract: A detection assay for Schistosoma mansoni DNA in mouse serum samples based on touchdown PCR was developed and evaluated. The serum samples could be assayed directly without the need to extract DNA. No cross reactions between S. mansoni and related species inducing human schistosomiasis were observed. After the infection, mouse sera and feces were collected for 8 weeks. Anti-worm antigen IgG and anti-soluble egg antigen IgG were detected in the sera at 6 weeks post-infection by ELISA. The parasite's eggs were detected in the feces at 8 weeks. In contrast, S. mansoni DNA was detected in the sera at 2 weeks post-infection. These data suggest that touchdown PCR is a potential tool for the early diagnosis of S. mansoni infection.
authors.affiliation: Department of Parasitology and Tropical Public Health, University of Occupational and Environmental Health, Japan 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Osada
authors.forename: Takashi
authors.initials: T
authors.lastname: Kumagai
authors.forename: Atsuo
authors.initials: A
authors.lastname: Hamada
authors.forename: Eiichi
authors.initials: E
authors.lastname: Okuzawa
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Kanazawa
mesh_terms: D000818:Animals; D000909:Antibodies, Helminth / Q000097:blood / Q000276:immunology; D000947:Antigens, Helminth / Q000276:immunology; D042241:Early Diagnosis; D004797:Enzyme-Linked Immunosorbent Assay; D005243:Feces / Q000469:parasitology; D005260:Female; D007074:Immunoglobulin G / Q000097:blood / Q000276:immunology; D051379:Mice; D010270:Parasite Egg Count; D016133:Polymerase Chain Reaction / Q000379:methods*; D012550:Schistosoma mansoni / Q000235:genetics / Q000276:immunology / Q000302:isolation & purification*; D012555:Schistosomiasis mansoni / Q000175:diagnosis*; D012680:Sensitivity and Specificity
chemical_list: D000909:Antibodies, Helminth; D000947:Antigens, Helminth; D007074:Immunoglobulin G