title: Photobacterium phosphoreum caused a histamine fish poisoning incident.
abstract: An incident of histamine fish poisoning (HFP) occurred due to the consumption of iwashi maruboshi (dried sardine) in Osaka, Japan in March 2002. A histamine-producing bacterial strain, YS4-7, was isolated from iwashi maruboshi that contained 1700 mg of histamine per kilogram. This strain was identified as Photobacterium phosphoreum by biochemical examinations and partial sequencing of 16S rDNA. P. phosphoreum YS4-7 showed greater capability as a histamine producer at 4 and 12 degrees C than Morganella morganii JCM 1672. Strain YS4-7 produced 546 mg of histamine per kilogram in a sardine homogenate stored for 12 h at 20 degrees C. M. morganii, Raoultella planticola and Hafnia alvei have been isolated from fish implicated in HFP incidents, whereas this is the first report of P. phosphoreum being the causative bacterium in a sporadic case of histamine food poisoning.
authors.affiliation: Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinariku, Osaka 537-0025, Japan. kanki@iph.pref.osaka.jp
authors.forename: Masashi
authors.initials: M
authors.lastname: Kanki
authors.forename: Tomoko
authors.initials: T
authors.lastname: Yoda
authors.forename: Masanori
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Teizo
authors.initials: T
authors.lastname: Tsukamoto
mesh_terms: D000818:Animals; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D005399:Fishes / Q000382:microbiology*; D005506:Food Contamination; D005511:Food Handling / Q000379:methods; D005516:Food Microbiology; D005517:Foodborne Diseases / Q000453:epidemiology*; D006632:Histamine / Q000096:biosynthesis* / Q000302:isolation & purification; D007564:Japan / Q000453:epidemiology; D010776:Photobacterium / Q000302:isolation & purification* / Q000378:metabolism*; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D006632:Histamine