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The Journal of the Japanese Society for Clinical Microbiology |
Biblioraphy Information
| ArticleTitle |
A case of catheter related bloodstream infection caused by a strain of Staphylococcus condimenti which was initially identified as Staphylococcus piscifermentans with MALDI TOF-MS |
| Language |
J |
| AuthorList |
Kenta Yamaguchi1), Yukari Sano1), Shun Taguchi1), Mayo Katsuki1), Takayuki Hirano1), Michio Yasunami1), Mami Fukuoka2), Kouji Kusaba3) |
| Affiliation |
1) Department of Clinical Laboratory, Saga-ken Medical Centre Koseikan
2) Department of Infectious Diseases, Saga-ken Medical Centre Koseikan
3) Department of Clinical Laboratory, Saga University Hospital |
| Publication |
J.J.C.M.: 32 (3), 160-165, 2022 |
| Received |
December 20, 2021 |
| Accepted |
March 23, 2022 |
| Abstract |
An 80-year-old male patient with total parenteral nutrition presented with shaking chills and a fever. The same Gram-positive cocci were isolated on smears of blood cultures and central venous catheter tip cultures. The strain was identified as Staphylococcus piscifermentans using MALDI-TOF-mass spectrometry on the day of isolation. Because S. piscifermentans is not known as human pathogen, the isolate was re-examined by another MALDI TOF-MS system and 16S rRNA sequence analysis and found to be Staphylococcus condimenti. This result was also supported by the biochemical profile generated by a VITEK2 identification system and the cause of discrepancy was the absence spectrometric pattern file of S. condimenti in the former identification system. The mass spectrometry is a rapid and precise method for bacterial identification, however, we must aware that the power of identification is limited by the coverage of spectrometric pattern files. |
| Keywords |
Staphylococcus condimenti, Staphylococcus piscifermentans |
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