title: Detection of antibodies against fimbria type 3 (Fim3) is useful diagnostic assay for pertussis.
abstract: Isolation of Bordetella pertussis and detection of the pertussis genome are not always successful because of low bacterial loads in adult patients with pertussis. Antibodies against pertussis toxin (PT) are measured but have low sensitivity in vaccinated subjects. There is no reliable diagnostic method at present. In this study, a fluorescent-EIA against several pertussis antigens and genome detection were investigated to establish clinical laboratory diagnostic methods for pertussis. The study was conducted in an outpatient clinic between September 2007 and 2013. Subjects consisted of 209 patients including adults suspected of pertussis and 35 staff members of the clinic. Loop-mediated isothermal amplification (LAMP) was performed to detect the pertussis genome in 5' UTR of the pertussis toxin (PT) gene. The catalytic region of the adenylate cyclase toxin (catACT), C-terminal of filamentous hemagglutinin (cFHA), and type 3 fimbria (Fim3) were selected, which are not pertussis vaccine component. Conventional PT and FHA antibodies were examined together with type 2 fimbria (Fim2) antibodies, and these are vaccine antigens. Pertussis DNA was detected in 23 (11%) out of 209. Detection sensitivity was high in young infants. Antibodies against Fim3 showed a higher positive rate in all age groups. Staff members at the pediatric outpatient clinic showed serological booster responses in Fim2 and Fim3 antibodies more sensitively than those in PT antibodies during outbreaks. LAMP was useful for detecting the pertussis genome in young infants, whereas a serological assay for fluorescent-EIA against Fim2 and Fim3 was preferable for adolescents and adults.
authors.affiliation: Saiwai Pediatric Clinic, Tachikawa, Tokyo, Japan.
authors.forename: Kaoru
authors.initials: K
authors.lastname: Oguchi
authors.affiliation: Saiwai Pediatric Clinic, Tachikawa, Tokyo, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Miyata
authors.affiliation: Kitasato Bio-Medical Assay Research Institute, Sagamihara, Kanagawa, Japan.
authors.forename: Yukimasa
authors.initials: Y
authors.lastname: Kazuyama
authors.affiliation: Kitasato Bio-Medical Assay Research Institute, Sagamihara, Kanagawa, Japan.
authors.forename: Atsuya
authors.initials: A
authors.lastname: Noda
authors.affiliation: Kitasato Institute for Life Sciences, Laboratory of Immunoregulation, Minato-ku, Tokyo, Japan.
authors.forename: Eri
authors.initials: E
authors.lastname: Suzuki
authors.affiliation: Kitasato Institute for Life Sciences, Laboratory of Immunoregulation, Minato-ku, Tokyo, Japan.
authors.forename: Mineo
authors.initials: M
authors.lastname: Watanabe
authors.affiliation: Kitasato Institute for Life Sciences, Laboratory of Virus Infection, Minato-ku, Tokyo, Japan. Electronic address: tetsuo-n@lisci.kitasato-u.ac.jp.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Nakayama
mesh_terms: D020121:5' Untranslated Regions; D037361:Adenylate Cyclase Toxin / Q000276:immunology; D018829:Adhesins, Bacterial / Q000276:immunology; D000293:Adolescent; D000328:Adult; D000554:Ambulatory Care Facilities; D000907:Antibodies, Bacterial / Q000097:blood*; D000942:Antigens, Bacterial / Q000276:immunology*; D001886:Bordetella pertussis / Q000235:genetics / Q000276:immunology*; D020134:Catalytic Domain / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D004269:DNA, Bacterial / Q000097:blood; D004797:Enzyme-Linked Immunosorbent Assay; D036781:Fimbriae Proteins / Q000276:immunology*; D010861:Fimbriae, Bacterial / Q000276:immunology; D005453:Fluorescence; D006282:Health Personnel; D006801:Humans; D007223:Infant; D008875:Middle Aged; D021141:Nucleic Acid Amplification Techniques; D037342:Pertussis Toxin / Q000235:genetics / Q000276:immunology; D010566:Virulence Factors, Bordetella / Q000276:immunology*; D014917:Whooping Cough / Q000097:blood / Q000175:diagnosis* / Q000276:immunology*; D055815:Young Adult
chemical_list: D020121:5' Untranslated Regions; D037361:Adenylate Cyclase Toxin; D018829:Adhesins, Bacterial; D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D004269:DNA, Bacterial; D010566:Virulence Factors, Bordetella; C065273:filamentous hemagglutinin adhesin, Bordetella pertussis; C101541:fim2 protein, Bordetella; C101542:fim3 protein, Bordetella; D036781:Fimbriae Proteins; D037342:Pertussis Toxin
keywords: FHA; Fim2; Fim3; LAMP; PT; Pertussis