Dear MARMAM community,

My co-authors and I are pleased to share our most recent publication titled
"First description of a lesion in the upper digestive mucosa associated
with a novel gammaherpesvirus in a striped dolphin (Stenella coeruleoalba)
stranded in the Western Mediterranean Sea".

You will find the open access publication at the *link*:
https://bmcvetres.biomedcentral.com/articles/10.1186/s12917-023-03677-2


*Citation*: Vargas-Castro, I., Crespo-Picazo, J.L., Jiménez Martínez, M.Á.
et al. First description of a lesion in the upper digestive mucosa
associated with a novel gammaherpesvirus in a striped dolphin (Stenella
coeruleoalba) stranded in the Western Mediterranean Sea. BMC Vet Res 19,
118 (2023). https://doi.org/10.1186/s12917-023-03677-2

*Abstract*:

*Background*: A wide variety of lesions have been associated with
herpesvirus in cetaceans. However, descriptions of herpesvirus infections
in the digestive system of cetaceans are scarce.

*Case report*: A young female striped dolphin stranded in the Valencian
Community (Spain) on the 6th August 2021. The animal showed external
macroscopic lesions suggestive of an aggressive interaction with bottlenose
dolphins (rake marks in the epidermis). Internally, the main findings
included congestion of the central nervous system and multiple,
well-defined, whitish, irregularly shaped, proliferative lesions on the
oropharyngeal and laryngopharyngeal mucosa. Histopathology revealed
lymphoplasmacytic and histiocytic meningoencephalitis, consistent with
neuro brucellosis. The oropharyngeal and laryngopharyngeal plaques were
comprised histologically of focally extensive epithelial hyperplasia. As
part of the health surveillance program tissue samples were tested for
cetacean morbillivirus using a real-time reverse transcription-PCR, for
Brucella spp. using a real-time PCR, and for herpesvirus using a
conventional nested PCR. All samples were negative for cetacean
morbillivirus; molecular positivity for Brucella spp. was obtained in
pharyngeal tonsils and cerebrospinal fluid; herpesvirus was detected in a
proliferative lesion in the upper digestive mucosa. Phylogenetic analysis
showed that the herpesvirus sequence was included in the Gammaherpesvirinae
subfamily. This novel sequence showed the greatest identity with other
Herpesvirus sequences detected in skin, pharyngeal and genital lesions in
five different species.

*Conclusions*: To the best of the authors’ knowledge, this is the first
report of a proliferative lesion in the upper digestive mucosa associated
with gammaherpesvirus posititvity in a striped dolphin (Stenella
coeruleoalba).

Please do not hesitate to contact us for any questions you may have.

Kind regards,

Ignacio Vargas-Castro



*Ignacio Vargas Castro*

DVM, PhD Student

Viral Immunology and Preventive Medicine Unit (SUAT)
VISAVET Health Surveillance Centre & Animal Health Department
Universidad Complutense Madrid

Av. Puerta de Hierro, s/n. 28040 Madrid.
spainignav...@ucm.eswww.sanidadanimal.info
<https://www.sanidadanimal.info/en/>

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