The aim of this study was to detect the infection by Trypanosoma cruzi in captive Neotropical primates in the Brazilian Amazon. From February 2013 to July 2014, 112 blood samples were collected from Neotropical primates from the Amazonas, Amapá, and Pará States, north of Brazil. The subjects belonged to the families Cebidae (N = 59), Atelidae (N = 41), Callitrichidae (N = 5), Pitheciidae (N = 4), and Aotidae (N = 3). Blood smears also were examined for the presence of trypomastigotes by optical microscopy. For the detection of T. cruzi DNA, a Nested-PCR with primers TCZ1/TCZ2 and TCZ3/TCZ4 was performed. T. cruzi DNA was detected in 12.5% (14/112) of Neotropical primates examined. Positive samples were detected in 16%, 12.5%, and 11.11% of the different species of primates sampled from the Amapá, Pará, and Amazonas states, respectively. The analysis of the blood smears did not reveal trypomastigote forms of T. cruzi. In conclusion, Neotropical primates kept in captivity were infected by T. cruzi in the studied areas. We recommend that a health management protocol be put into place to prevent the transmission of infectious agents among captive populations, captive and wild populations, and between NHPs and the technicians who handle these animals.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1002/ajp.22590 | DOI Listing |
Lung ultrasound can be useful for the early diagnosis and treatment of respiratory complications. The combination of air and soft tissue confirms imaging artefacts that can contribute to differentiation between healthy and deteriorated lung tissue. Although non-human primates are often chosen as research models due to their anatomical and physiological similarity to humans, there is a lack of data on the use of lung ultrasound in these individuals.
View Article and Find Full Text PDFFront Genet
December 2024
Programa de Pós-Graduação em Ecologia e Evolução da Biodiversidade, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
The brown howler, , endemic to the Atlantic Forest of Brazil and Argentina, is threatened by habitat loss and fragmentation, hunting, and its susceptibility to yellow fever. Two subspecies have been recognized, but their names, validity, and geographic ranges have been controversial. We obtained samples covering the species' entire distribution in Brazil and Argentina to clarify these issues by investigating their genetic diversity and structure and assessing their evolutionary history.
View Article and Find Full Text PDFInt J Parasitol Parasites Wildl
December 2024
Laboratorio de Genética Animal. Grupo Agrociencias, Biodiversidad y Territorio, Instituto de Biología, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, Medellín, Antioquia, Colombia.
Trypanosomes are blood parasites capable of infecting nearly any vertebrate. Many Neotropical primates frequently host trypanosomes and are considered potential reservoirs for and other human-pathogenic trypanosomatids. However, diagnostic methods originally developed for detecting these trypanosomatids in humans and domestic species must be validated to reliably diagnose infections in non-human primates.
View Article and Find Full Text PDFViruses
October 2024
Arbovirus and Hemorrhagic Virus Laboratory, Oswaldo Cruz Institute, Rio de Janeiro 21040-360, Brazil.
We describe a natural coinfection with canine distemper virus (CDV) and yellow fever virus in a free-ranging neotropical primate of the genus , found dead in the northeastern region of Brazil. The laboratory diagnosis included histopathology, immunohistochemistry, rRT-PCR, and phylogenetic analyses. The CDV sequences from this primate in Brazil represent a divergent lineage in Rio Grande do Norte, closely related to genotypes EU1/South America 1 and South America 2.
View Article and Find Full Text PDFInt J Paleopathol
November 2024
Departamento de Estratigrafia e Paleontologia, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Rio de Janeiro, RJ 20550-900, Brazil. Electronic address:
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!