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Case Reports
. 2019 Jan 9:15:e00486.
doi: 10.1016/j.idcr.2019.e00486. eCollection 2019.

Paracoccus yeei as a cause of peritoneal dialysis peritonitis in the United Kingdom

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Case Reports

Paracoccus yeei as a cause of peritoneal dialysis peritonitis in the United Kingdom

Mauricio A Arias et al. IDCases. .

Abstract

Introduction: Paracoccus yeei is a Gram-negative coccobacilli which is often an environmental organism. However, infection of patients usually with underlying immunosuppression has been described in the last decades, mainly due to the emergence of diagnostic molecular methods.

Case presentation: We describe here a case of P. yeei peritonitis in a patient undergoing peritoneal dialysis. Turbidity of the peritoneal dialysate was the sole clinical manifestation. Inflammatory markers were not raised. A peritoneal fluid specimen showed increased white-cell count, but no organisms were seen on Gram stain. MALDI-TOF mass spectrometry identified P. yeei as the infectious agent. Patient was successfully treated with gentamicin. Minimum inhibitory concentration analysis suggested P. yeei to be sensitive to aminoglycosides and specific betalactams but not to ciprofloxacin and ceftazidime, in line with previous literature.

Discussion: This case of P. yeei peritoneal-dialysis peritonitis contributes to accumulating evidence on the emergent role of this organism as a relevant human pathogen. It also provides information about antibiotic resistance patterns that helps to guide therapy more specifically and effectively.

Keywords: Aminoglycosides; EUCAST; Environmental organism; Minimum inhibitory concentration; Paracoccus yeei; Peritoneal-dialysis peritonitis.

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Figures

Fig. 1
Fig. 1
(A) Growth of Paracoccus yeei colonies on Columbia blood agar. Note the presence of raised colonies of mucoid, shiny brownish appearance. (B) Gram stain of Paracoccus yeei. Note the presence of coccobacilli arranged in pairs and with peripheral Gram negative staining (“0″ appearance). Inset shows a magnified image of the Gram stain to illustrate the “0″ staining appearance.

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