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The Journal of the Japanese Society for Clinical Microbiology |
Biblioraphy Information
| ArticleTitle |
A case of Brachyspira pilosicoli bacteremia during the treatment of Helicobacter cinaedi bacteremia |
| Language |
J |
| AuthorList |
Mako Watanabe1), Hitomi Yagisawa1), Tomohiro Ooe1), Sumiko Kohashi2), Naoko Yoshida3), Hidefumi Koh4) |
| Affiliation |
1) Department of Clinical Laboratory, Tachikawa Hospital
2) Department of Hematology, Tachikawa Hospital
3) Department of Parasitology, Juntendo University School of Medicine
4) Division of Pulmonary Medicine, Department of Internal Medicine, Tachikawa Hospital |
| Publication |
J.J.C.M.: 34 (1), 25-29, 2023 |
| Received |
April 24, 2023 |
| Accepted |
July 31, 2023 |
| Abstract |
Brachyspira pilosicoli is an obligately anaerobic gram-negative spirochete that is known to be the causative agent of intestinal spirochetosis in humans and animals. While recent reports have occasionally described its detection from blood cultures, such reports are rare in Japan. In this case, we encountered a patient who developed B. pilosicoli bacteremia during the treatment of Helicobacter cinaedi bacteremia. The patient was a male in his 40s who developed H. cinaedi bacteremia while undergoing chemotherapy for diffuse large B-cell lymphoma. Treatment was initiated with cefepime and later switched to amoxicillin after the identification of the causative organism. On the 32nd day of hospitalization, a blood culture taken for the purpose of confirming negativity yielded growth only in the anaerobic bottle on the 9th day, where film-like colonies were observed on Brucella HK agar on the 5th day. The organism detected was difficult to identify with a simple kit and was identified as B. pilosicoli by mass spectrometry. B. pilosicoli was difficult to detect in normal blood culture, and it was considered important to consider extending the culture period based on the clinical background and course of treatment. |
| Keywords |
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