Granulomatous Pneumonia in a Nile Crocodile (Crocodylus niloticus) Caused by a Member of Mycobacterium Chelonae/Abscessus Group

Marco Gobbi; Sara Corneli; Nicoletta D'Avino; Elisabetta Manuali; Antonella Di Paolo; Carla Sebastiani; Marcella Ciullo; Michele Tentellini; Maria Lodovica Pacciarini; Martina Sebastianelli; Silvia Pavone; Piera Mazzone

doi:10.20944/preprints202009.0309.v1

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preprints.org > medicine and pharmacology > veterinary medicine > doi: 10.20944/preprints202009.0309.v1

Preprint Case Report Version 1 Preserved in Portico This version is not peer-reviewed

Granulomatous Pneumonia in a Nile Crocodile (Crocodylus niloticus) Caused by a Member of Mycobacterium Chelonae/Abscessus Group

^* ,

Maria Lodovica Pacciarini

Martina Sebastianelli

Silvia Pavone

Piera Mazzone

Version 1 : Received: 12 September 2020 / Approved: 14 September 2020 / Online: 14 September 2020 (00:12:29 CEST)

How to cite: Gobbi, M.; Corneli, S.; D'Avino, N.; Manuali, E.; Di Paolo, A.; Sebastiani, C.; Ciullo, M.; Tentellini, M.; Pacciarini, M. L.; Sebastianelli, M.; Pavone, S.; Mazzone, P. Granulomatous Pneumonia in a Nile Crocodile (Crocodylus niloticus) Caused by a Member of Mycobacterium Chelonae/Abscessus Group. Preprints 2020, 2020090309. https://doi.org/10.20944/preprints202009.0309.v1 Gobbi, M.; Corneli, S.; D'Avino, N.; Manuali, E.; Di Paolo, A.; Sebastiani, C.; Ciullo, M.; Tentellini, M.; Pacciarini, M. L.; Sebastianelli, M.; Pavone, S.; Mazzone, P. Granulomatous Pneumonia in a Nile Crocodile (Crocodylus niloticus) Caused by a Member of Mycobacterium Chelonae/Abscessus Group. Preprints 2020, 2020090309. https://doi.org/10.20944/preprints202009.0309.v1

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MDPI and ACS Style

Gobbi, M.; Corneli, S.; D'Avino, N.; Manuali, E.; Di Paolo, A.; Sebastiani, C.; Ciullo, M.; Tentellini, M.; Pacciarini, M. L.; Sebastianelli, M.; Pavone, S.; Mazzone, P. Granulomatous Pneumonia in a Nile Crocodile (Crocodylus niloticus) Caused by a Member of Mycobacterium Chelonae/Abscessus Group. Preprints 2020, 2020090309. https://doi.org/10.20944/preprints202009.0309.v1

APA Style

Gobbi, M., Corneli, S., D'Avino, N., Manuali, E., Di Paolo, A., Sebastiani, C., Ciullo, M., Tentellini, M., Pacciarini, M. L., Sebastianelli, M., Pavone, S., & Mazzone, P. (2020). Granulomatous Pneumonia in a Nile Crocodile (<em>Crocodylus niloticus</em>) Caused by a Member of Mycobacterium Chelonae/Abscessus Group. Preprints. https://doi.org/10.20944/preprints202009.0309.v1

Chicago/Turabian Style

Gobbi, M., Silvia Pavone and Piera Mazzone. 2020 "Granulomatous Pneumonia in a Nile Crocodile (<em>Crocodylus niloticus</em>) Caused by a Member of Mycobacterium Chelonae/Abscessus Group" Preprints. https://doi.org/10.20944/preprints202009.0309.v1

Abstract

A 40 years old male Nile crocodile (Crocodylus niloticus) was diagnosed with pulmonary mycobacteriosis caused by a member of Mycobacterium chelonae/abscessus group. Post-mortem examination showed a severe systemic visceral granulomatous involvement, with lesions in lungs, heart, liver, spleen and kidneys. Histopathological examination of lung, spleen, heart and liver revealed multifocal to coalescing granulomas showing eterophils in central zone and outer rim of epithelioid histiocytes, multinucleated giant cells and lymphocytes. The Ziehl–Neelsen histological staining revealed rare vacuoles containing numerous alcohol-acid resistant bacteria. Mycobacterial infection was confirmed by culture and PCR targeting rRNA 16S gene. Sequence analysis of the DNA amplicon revealed a 100% homology with the M. chelonae/ abscessus group. Even if the classification of the memebrr of this group is still on updating, to the best of our knowledge, this is the first report of M. chelonae/abscessus member infection in a Nile crocodile species.

Keywords

Mycobacterium chelonae/abscessus; crocodile; mycobacteriosis; Non-tuberculous mycobacteria

Subject

Medicine and Pharmacology, Veterinary Medicine

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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