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Volume 8
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10.3390/microorganisms8030399
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Case Report

A Case of Aeromonas trota in an Immunocompromised Patient with Diarrhea

by
Ana Fernández-Bravo
1,
Isabel Fort-Gallifa
2,
Frederic Ballester
2,
Isabel Pujol
1,2,
Frederic Gomez-Bertomeu
1,3,
Mariola Domínguez
4,
Miquel Micó
5,
Eva Alcoceba
5,
Josep Maria Simó-Sisó
2 and
Maria José Figueras
1,*
1
Unidad de Microbiología, Departamento de Ciencias Médicas Básicas, Facultad de Medicina y Ciencias de la Salud, IISPV, Universidad Rovira i Virgili, Reus 43201, Spain
2
Hospital Universitari Sant Joan de Reus-Laboratori de Referència de Tarragona i Terres de l’Ebre, Reus 43201, Spain
3
Hospital Universitari Joan XXIII-Hospital Universitari Sant Joan de Reus-Laboratori de Referència de Tarragona i Terres de l’Ebre- Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus 43204, Spain
4
Departamento de Geriatría, Hospital de la Santa Creu i Jesús, Tortosa 43590, Spain
5
Laboratori de Referència de Catalunya, Barcelona 08820, Spain
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(3), 399; https://doi.org/10.3390/microorganisms8030399
Submission received: 12 February 2020 / Revised: 3 March 2020 / Accepted: 10 March 2020 / Published: 12 March 2020
(This article belongs to the Special Issue An Update on Aeromonas)
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Abstract

According to recent literature, 95.4% of the Aeromonas strains associated with human clinical cases correspond to four species: Aeromonas caviae, Aeromonas dhakensis, Aeromonas veronii and Aeromonas hydrophila. However, other less prevalent species such as Aeromonas trota, are also described from clinical samples. Based on its low incidence, the latter species can be regarded as rare and it is the only Aeromonas species susceptible to ampicillin. From the taxonomic point of view, A. trota is considered a synonym of the species Aeromonas enteropelogenes. The objective of this study is to present a new clinical case associated with A. trota in order to increase the knowledge about this species. The strain was recovered from the feces of a 69-year-old patient with a diarrheal syndrome and peritoneal psammocarcinoma. The preliminary identification as Aeromonas sp. was obtained with the API 20E, but it was characterized as Aeromonas jandei and also as Aeromonas enteropelogenes with different scores with the matrix-assisted laser desorption ionization time of flight (MALDI-TOF). Based on the sequence of the rpoD gene, it was confirmed to be A. trota. The antimicrobial resistance pattern showed that the strain was susceptible to ampicillin, penicillins in combination with beta-lactamase inhibitors, quinolones, carbapenems, aminoglycosides and cephalosporins, except cephalothin. In conclusion, the recognition of an Aeromonas strain susceptible to ampicillin should alert the clinical microbiologist of the possible involvement of this rare species. Furthermore, the MALDI-TOF database should be updated indicating that the species A. enteropelogenes, is a synonym of A. trota.
Keywords: Aeromonas trota; Aeromonas enteropelogenes; ampicillin; MALDI-TOF Aeromonas trota; Aeromonas enteropelogenes; ampicillin; MALDI-TOF

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MDPI and ACS Style

Fernández-Bravo, A.; Fort-Gallifa, I.; Ballester, F.; Pujol, I.; Gomez-Bertomeu, F.; Domínguez, M.; Micó, M.; Alcoceba, E.; Simó-Sisó, J.M.; Figueras, M.J. A Case of Aeromonas trota in an Immunocompromised Patient with Diarrhea. Microorganisms 2020, 8, 399. https://doi.org/10.3390/microorganisms8030399

AMA Style

Fernández-Bravo A, Fort-Gallifa I, Ballester F, Pujol I, Gomez-Bertomeu F, Domínguez M, Micó M, Alcoceba E, Simó-Sisó JM, Figueras MJ. A Case of Aeromonas trota in an Immunocompromised Patient with Diarrhea. Microorganisms. 2020; 8(3):399. https://doi.org/10.3390/microorganisms8030399

Chicago/Turabian Style

Fernández-Bravo, Ana, Isabel Fort-Gallifa, Frederic Ballester, Isabel Pujol, Frederic Gomez-Bertomeu, Mariola Domínguez, Miquel Micó, Eva Alcoceba, Josep Maria Simó-Sisó, and Maria José Figueras. 2020. "A Case of Aeromonas trota in an Immunocompromised Patient with Diarrhea" Microorganisms 8, no. 3: 399. https://doi.org/10.3390/microorganisms8030399

APA Style

Fernández-Bravo, A., Fort-Gallifa, I., Ballester, F., Pujol, I., Gomez-Bertomeu, F., Domínguez, M., Micó, M., Alcoceba, E., Simó-Sisó, J. M., & Figueras, M. J. (2020). A Case of Aeromonas trota in an Immunocompromised Patient with Diarrhea. Microorganisms, 8(3), 399. https://doi.org/10.3390/microorganisms8030399

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