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13 results on '"Mello, Lauren S."'

4. Causes of death in neotropical primates in Rio Grande do Sul State, Southern Brazil.

Author

Ehlers, Luiza P., Slaviero, Mônica, Bianchi, Matheus V., de Mello, Lauren S., De Lorenzo, Cíntia, Surita, Lívia E., Alievi, Marcelo M., Driemeier, David, Pavarini, Saulo P., and Sonne, Luciana

Subjects
CAUSES of death, BLUNT trauma, PRIMATES, PARASITIC diseases, AUTOPSY, BACTERIAL diseases
Abstract

Background: Anthropogenic disturbances are the main threats to nonhuman primates conservation, and infectious diseases may also play a key role in primate population decline. This study aimed to determine the main causes of death in neotropical primates. Methods: A retrospective study of post‐mortem examinations was conducted on 146 neotropical primates between January 2000 and December 2018. Results: Conclusive diagnoses were obtained in 68.5% of the cases, of which 59 corresponded to non‐infectious causes and 41 to infectious diseases. Trauma was the main cause of death (54/100), with anthropogenic stressors caused by blunt force trauma injuries (collision with vehicles) and puncture wound injuries associated with interspecific aggression (dog predation) were the most common factors. Other causes of death included bacterial diseases (27%), followed by parasitic diseases (12%), neoplasms (2%), and viral diseases (2%). Conclusions: Free‐ranging primates were mostly affected by non‐infectious causes, while captive primates were by infectious conditions. [ABSTRACT FROM AUTHOR]

Published
2022
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8. Hypomyelinogenesis associated with transplacental poisoning by Sida carpinifolia (Malvaceae) in fetus and newborn calves

Author

Reis, Matheus O., Cruz, Raquel A.S., Bassuino, Daniele M., Boabaid, Fabiana M., Oliveira, Luiz Gustavo S., Mello, Lauren S., Sonne, Luciana, and Driemeier, David

Subjects
Hipomielinogênese, hypomyelinogenesis, bovinos, doença do acúmulo lisossomal, Sida carpinifolia, plant poisoning, calves, lysosomal storage disease, intoxicação por plantas, cattle, Poisonous plants, embryonic structures, bezerros, Plantas tóxicas, toxicoses, swainsonina, Malvaceae, swainsonine, reproductive and urinary physiology, alfa-manosidose, alfa-manosidosis
Abstract

Sida carpinifolia is a plant responsible for poisoning several species of animals. This paper describes Hypomyelinogenesis in fetuses and neonates of cattle that consumed S. carpinifolia. Neonates manifested ataxia and muscle tremors. Two bovine newborns and four fetuses were necropsied and showed no significant gross changes. Histopathologic findings included vacuolation of pancreatic acinar cells, thyroid follicular cells, hepatocytes, cells of renal tubules and neurons of the fetus and the white matter of the telencephalic frontal lobe of the neonates and also revealed axonal spheroids in the brain of the fetuses and neonates. The lectin-histochemical evaluation shoved staining for the lectins Con-A, WGA and s-WGA. The Luxol Fast Blue staining revealed a marked decrease of myelin in the brain of all the fetuses and a moderate decrease in the neonates. Histologic and lectin-histochemic findings indicate that the consumption of S. carpinifolia by pregnant bovine females can cause hypomyelinogenesis in fetuses and neonates. RESUMO: Sida carpinifolia é uma planta responsável por intoxicar várias espécies animais. Este artigo descreve hipomielinogênese em fetos e neonatos de bovinos que consumiram S. carpinifolia. Os neonatos manifestaram ataxia e tremores musculares. Dois neonatos e quatro fetos bovinos foram necropsiados e não havia alterações macroscópicas significativas. Os achados histopatológicos incluíram vacuolização de células acinares do pâncreas, células foliculares da tireoide, hepatócitos, células renais tubulares e neurônios nos fetos. Nos neonatos havia vacuolização na substância branca do lobo frontal telencefálico, além de esferoides axonais no encéfalo dos fetos e dos recém-nascidos. A avaliação lectino-histoquímica demonstrou marcação para as lectinas Con-A, WGA e s-WGA. A coloração de Luxol Fast Blue revelou diminuição acentuada da mielina no telencéfalo de todos os fetos e diminuição moderada nos neonatos. Os achados histológicos e lectina-histoquímicos indicam que o consumo de S. carpinifolia por fêmeas bovinas gestantes pode causar hipomielinogênese em fetos e neonatos.

Published
2018

11. Rhinosporidiosis in horses

Author

Argenta, Fernando F., primary, Mello, Lauren S., additional, Vielmo, Andreia, additional, Pavarini, Saulo P., additional, Driemeier, David, additional, and Sonne, Luciana, additional

Published
2018
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