title: Rapid identification and differentiation of Vibrio parahaemolyticus from Vibrio spp. in seafood samples using developed monoclonal antibodies.
abstract: Monoclonal antibodies (MAbs) specific to Vibrio parahaemolyticus were successfully generated. According to the specificity of V. parahaemolyticus, MAbs can be classified into 5 groups. The MAbs VP-2D and VP-11H were specific to the O2 and O4 groups of V. parahaemolyticus, respectively. The MAb VP-11B reacted with 11 out of 30 isolates of V. parahaemolyticus used in this study. The MAb VP-516 bound to 27 out of 30 isolates of V. parahaemolyticus and cross reacted with all 10 isolates of V. alginolyticus. The MAb VP-618 demonstrated positive reactivity to 29 out of 30 isolates of V. parahaemolyticus and demonstrated slight cross reactivity to 3 out of 30 isolates of V. harveyi. The sensitivity of the MAbs ranged from 10(8) to 10(7) c.f.u. ml(-1) for V. parahaemolyticus obtained from pure cultures and depended on the group of MAbs. However, the detection capability could be improved to be equivalent to that of the PCR technique following pre-incubation of the samples in alkaline peptone water (APW). Using these MAbs along with MAbs specific to V. alginolyticus (VA-165), V. cholerae (VC-63), V. harveyi (VH-9B and VH-20C) and Vibrio spp. (VC-201) from previous studies, V. parahaemolyticus could be identified and differentiated from Vibrio spp. in various seafood samples including shrimp, green mussels, blood clams and oysters by a simple dot blot immunoassay without the requirement for bacterial isolation or biochemical characterization.
authors.affiliation: Department of Biology, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand.
authors.forename: Piyanuch
authors.initials: P
authors.lastname: Prompamorn
authors.forename: Siwaporn
authors.initials: S
authors.lastname: Longyant
authors.forename: Chalinan
authors.initials: C
authors.lastname: Pengsuk
authors.forename: Paisarn
authors.initials: P
authors.lastname: Sithigorngul
authors.forename: Parin
authors.initials: P
authors.lastname: Chaivisuthangkura
mesh_terms: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal; D001431:Bacteriological Techniques / Q000379:methods*; D003429:Cross Reactions; D007118:Immunoassay / Q000379:methods; D017747:Seafood / Q000382:microbiology*; D012680:Sensitivity and Specificity; D014736:Vibrio parahaemolyticus / Q000145:classification* / Q000276:immunology / Q000302:isolation & purification*
chemical_list: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal