title: First case report of bacteremia due to 'Campylobacter-like organism 3'.
abstract: A case of bacteremia caused by a rare Helicobacter species, Campylobacter-like organism 3 (CLO-3), in a 75-year-old man with prostate cancer and an indwelling urethral catheter for urinary retention, is reported. Oral levofloxacin (500mg per day) was effective, although the results of antimicrobial susceptibility testing were unknown. Non-film-like, small, clear colonies were isolated on blood agar after 72h of microaerobic incubation at 37°C. Biochemical testing indicated that the isolates were catalase-positive, negative for nitrate reduction and urease activity, and positive for indoxyl acetate hydrolysis. The isolate was identified as CLO-3 by sequence analysis of the 16S rRNA and hsp60 genes. Although CLO-3 is known to cause enterocolitis, bacteremia due to CLO-3 has not been described. There have been an increasing number of reports of bacteremia caused by Helicobacter cinaedi and Helicobacter fennelliae, which were first reported as CLO-1 and CLO-2, and CLO-3 may represent another emerging cause of Helicobacter-induced bacteremia.
authors.affiliation: Department of Infection Prevention and Control, Tokyo Medical University Hospital, Tokyo, Japan.
authors.forename: Itaru
authors.initials: I
authors.lastname: Nakamura
authors.affiliation: Department of Microbiology, Tokyo Medical University, 6-1-1 Shinjuku, Tokyo 160-8402, Japan. Electronic address: ohkusu@tokyo-med.ac.jp.
authors.forename: Kiyofumi
authors.initials: K
authors.lastname: Ohkusu
authors.affiliation: Department of Urology, Tokyo Medical University Hospital, Tokyo, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Nakagami
authors.affiliation: Department of Urology, Tokyo Medical University Hospital, Tokyo, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Tachibana
authors.affiliation: Department of Microbiology, Tokyo Medical University, 6-1-1 Shinjuku, Tokyo 160-8402, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Matsumoto
mesh_terms: D000368:Aged; D016470:Bacteremia / Q000382:microbiology*; D016998:Helicobacter / Q000302:isolation & purification*; D006801:Humans; D008297:Male
keywords: Anti-androgenic agent; Campylobacter-like organism; Novel Helicobacter sp; Prostate cancer; Prostatitis; Urinary tract infection