Publications by authors named "Nivia Canales"
Article Synopsis
- This study analyzed the blood bacterial microbiota in 145 healthy cats and 140 febrile cats using high-quality sequencing of the 16S rRNA gene, revealing differences in bacterial composition between the two groups.
- Healthy and febrile cats showed notable differences in bacterial families, with increased abundance of Faecalibacterium and Kineothrix in febrile samples, while Thioprofundum decreased.
- The composition and diversity of blood microbiota in febrile cats varied based on the affected body system, but factors like sex and age did not significantly influence the microbiota, apart from age differences in healthy cats.
Genetic diversity of Bartonella rpoB haplotypes in domestic cats from Chile.
Comp Immunol Microbiol Infect Dis
April 2024
Article Synopsis
- The study explored the genetic diversity of Bartonella species in 79 cats from Chile, focusing on their blood samples that tested positive for Bartonella spp. using qPCR.
- DNA sequencing and phylogenetic analysis revealed that most samples matched Bartonella henselae, with a smaller number showing similarities to Bartonella koehlerae.
- Notably, the research identified multiple haplotypes in individual cats, marking the first report of co-infection by different variants of B. henselae and B. koehlerae in Chilean cats.
Article Synopsis
- Recent research highlights a diverse range of infectious agents in wildlife, particularly in Chilean pudus, which may pose risks to human and animal health.
- The study found that various pathogens were present in blood samples from wild and captive pudus, with specific percentages indicating their occurrence in the population.
- This investigation marks the first identification of certain pathogens in wild ungulates in South America, indicating a need for further study on the potential role of pudus as infection reservoirs and transmission sources.
is a primary zoonotic agent, having cats as asymptomatic reservoirs. In humans, it causes cat scratch disease. Here, we report the whole genome sequences of 16 strains isolated from cats in Valdivia city, Southern Chile.
View Article and Find Full Text PDFMolecular detection and characterization of Bartonella spp. in rodents from central and southern Chile, with emphasis on introduced rats (Rattus spp.).
Comp Immunol Microbiol Infect Dis
September 2023
Bartonella spp. was screened in 155 rodents from Chile, mainly the invasive rats Rattus norvegicus and Rattus rattus. A total of 155 spleen and 50 blood samples were analyzed through real-time PCR for Bartonella spp.
View Article and Find Full Text PDFMolecular identification of Bartonella spp. and Rickettsia felis in fox fleas, Chile.
Comp Immunol Microbiol Infect Dis
May 2023
Seventy-five flea pools (one to ten fleas per pool) from 51 Andean foxes (Lycalopex culpaeus) and five South American grey foxes or chillas (Lycalopex griseus) from the Mediterranean region of Chile were analyzed for the presence of DNA of Bartonella spp. and Rickettsia spp. through quantitative real-time PCR for the nouG and gltA genes, respectively.
View Article and Find Full Text PDFDigital dermatitis (DD) is a highly contagious and infectious disease in cattle which has a considerable negative economic impact worldwide, and adversely affects animal welfare. Members of the genus are the only bacterial agents for which there is consistent evidence of participation in DD lesions. In Chile, DD has been described since the 1990s, but only under a clinical approach.
View Article and Find Full Text PDFViruses have developed cellular strategies to ensure progeny survival. One of the most interesting is immune camouflage, where the virus triggers a controlled-intensity immune response that prevents total destruction of the infected cell, thus "winning time" for the virus. This study explored the regulatory contexts of the bovine A20 gene during bovine viral diarrhea virus (BVDV)-1 infection, using IL-8 as an immune-response sentinel molecule.
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