Banca de DEFESA: NATÁLIA BRAZ DE ALMEIDA PEREIRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : NATÁLIA BRAZ DE ALMEIDA PEREIRA
DATE: 20/12/2024
TIME: 08:00
LOCAL: Videoconferência
TITLE:

Histopathological and molecular aspects of Sarcocystis sp. (Apicomplexa: Sarcocystidae) in cervids maintained in the Rio de Janeiro Biopark.

KEY WORDS:

Rusa timorensis, Sarcocystidae, histopathological and molecular diagnosis, Rio de Janeiro.

PAGES: 47
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Medicina Veterinária Preventiva
SPECIALTY: Doenças Parasitárias de Animais
SUMMARY:

Sarcocystis species are intracellular protozoan parasites with an intermediate-definitive host life cycle based on a predator-prey relationship. Most Sarcocystis species infect specific hosts or closely related host species, causing various clinical signs to the hosts and in some cases rendering the meat unusable for human consumption as it can still be a risk factor for human infection, as it occurs through the ingestion of raw or undercooked meat. A total of 27 cervids were submitted for post-mortem examination from 2017 to 2023 at the Pathological Anatomy Sector of the Universidade Federal do Rio de Janeiro. Four cervids in total were diagnosed with meningoencephalitis, representing 14.8% of the causes of death in the Cervidae family. Three Rusa timorensis from that group were diagnosed with meningoencephalitis caused by Sarcocystis sp. infection and presented compatible histological characteristics, according to the established criteria. Brain tissue samples from three deer with neurological signs were analyzed and encephalitis was observed microscopic with the presence of structures compatible with merozoites of Sarcoscystis. In addition, immunohistochemistry of these tissues was performed and protozoan research was carried out in deer blood from the BioParque blood sample bank through molecular analysis. This study involves recording the appearance of Sarcocystis sp. in histopathological lesions associated with neurological signs in captive cervids from the City of Rio de Janeiro; in addition to their diagnosis, their macro and microscopic aspects and their clinical presentation and epidemiology where described.

COMMITTEE MEMBERS:
Presidente - 3247559 - BRUNA DE AZEVEDO BAETA
Interno - 387340 - CARLOS WILSON GOMES LOPES
Interna - 3103528 - CLAUDIA BEZERRA DA SILVA
Externa ao Programa - 2932766 - ANDRESSA FERREIRA DA SILVA SPYRIDES - UFRRJExterno à Instituição - GEORGE REGO ALBUQUERQUE - UESC
Externo à Instituição - GIDEÃO DA SILVA GALVÃO - UFRB
Externo à Instituição - MATHEUS DIAS CORDEIRO - UFRRJ