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Palmer JPS, Gazêta GS, André MR, Fialho PA, Corrêa LL, Damasceno JAL, Israel CB, Pereira RR, da Silva Barbosa A. Piroplasmid Infections Among Domestic Dogs in the Mountain City of Rio de Janeiro, Brazil. Acta Parasitol 2024:10.1007/s11686-024-00843-w. [PMID: 38602588 DOI: 10.1007/s11686-024-00843-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 03/20/2024] [Indexed: 04/12/2024]
Abstract
PURPOSE The aim of the present study was to analyze the frequency of the piroplasmids in blood from dogs and ticks recovered from these animals in Teresópolis city, located in the mountain region of Rio de Janeiro state, Brazil. In addition to the clinical and hematological profile. METHODS A total of 400 dogs attended in a veterinary clinic in this city between 2020 and 2021 were included. The blood was collected from the dogs, along with ticks and information on these dogs was obtained through a questionnaire applied to the owners. Thin-smear analyses and complete blood counts were performed. All forms characteristic of piroplasmids were measured and classified morphologically. The blood was also subjected to PCR assays based on the genes 18S rRNA and hsp70. In addition, the ixodid ticks were classified morphologically and subjected to PCR for piroplasmids research. The amplified products were sent for gene sequencing. RESULTS Piroplasmids were detected in 2.3% of the dogs. The variables statistically associated with infections in these animals were hemorrhage/bleeding, jaundice, anisocytosis, activated monocytes and macroplatelets (p ≤ 0.05). Piriform, ring-shaped, oval and aberrant structures were viewed in erythrocytes, neutrophils and monocytes, with lengths greater than and less than 2.5 µm. The nine positive samples from these dogs were characterized as due to Rangelia vitalii. However, one sequence from B. vogeli was detected in a single adult specimen of R. sanguineus. CONCLUSION Although circulation of two species of piroplasmids potentially infective for domestic dogs has been observed in the mountain city of Rio de Janeiro, infection due to R. vitalii was mostly seen in the dogs of the present study.
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Affiliation(s)
- João Pedro Siqueira Palmer
- Parasite Molecular Biology Laboratory, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, Rio de Janeiro, 24210-130, Brazil
- National Reference Laboratory on Vectors of Rickettsioses, Oswaldo Cruz Institute, Oswaldo Cruz Foudation, Rio de Janeiro, 21040-360, Brazil
| | - Gilberto Salles Gazêta
- National Reference Laboratory on Vectors of Rickettsioses, Oswaldo Cruz Institute, Oswaldo Cruz Foudation, Rio de Janeiro, 21040-360, Brazil
| | - Marcos Rogério André
- Vector-Borne Bioagents Laboratory (VBBL), Department of Pathology, Reproduction and One Health, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil
| | - Priscila Alves Fialho
- Parasite Molecular Biology Laboratory, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, Rio de Janeiro, 24210-130, Brazil
| | - Laís Lisboa Corrêa
- Parasite Molecular Biology Laboratory, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, Rio de Janeiro, 24210-130, Brazil
| | | | - Carolina Bistritschan Israel
- Clinic School of Veterinary Medicine Luiz Cataldi de Souza, Serra Dos Órgãos University Center, Teresópolis, Rio de Janeiro, 25976-345, Brazil
| | - Rafael Rempto Pereira
- Clinic School of Veterinary Medicine Luiz Cataldi de Souza, Serra Dos Órgãos University Center, Teresópolis, Rio de Janeiro, 25976-345, Brazil
| | - Alynne da Silva Barbosa
- Parasite Molecular Biology Laboratory, Department of Microbiology and Parasitology, Biomedical Institute, Fluminense Federal University, Niterói, Rio de Janeiro, 24210-130, Brazil.
- Laboratory of Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, 21040-900, Brazil.
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Class CSC, Fialho PA, Alves LC, Silveira RL, Amendoeira MRR, Knackfuss FB, Barbosa ADS. Comparison of McMaster and Mini-FLOTAC techniques for the diagnosis of internal parasites in pigs. Rev Bras Parasitol Vet 2023; 32:e013322. [PMID: 36995837 PMCID: PMC10062010 DOI: 10.1590/s1984-29612023013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 02/02/2023] [Indexed: 03/29/2023]
Abstract
Abstract This purpose of this study was to compare the efficiency of the McMaster and Mini-FLOTAC quantitative techniques in the investigation of helminths in feces of pigs. An analysis was made of 74 fecal samples from pigs raised on family farms located in Rio de Janeiro, Brazil. These were analyzed by the Mini-FLOTAC and McMaster techniques in a solution of 1,200g/mL NaCl. This investigation revealed a superiority in the frequency of all helminths detected by Mini-FLOTAC, including Ascaris suum, Trichuris suis, strongyles and Strongyloides ransomi. The Kappa index revealed substantial agreement in all comparisons made in relation to the frequency of positive samples. However, significant statistical differences in the comparison of EPGs between McMaster and Mini-FLOTAC were observed for all nematodes (p ≤0.05). Higher values of Pearson’s linear correlation coefficient (r), between the techniques in relation to EPG were observed for A. suum and T. suis, differently from what was observed for strongyles and S. ransomi. Mini-FLOTAC proved to be a more satisfactory and reliable technique both for the diagnosis of parasites and for the determination of EPG in pig feces due to the larger size of its counting chambers, thus increasing the helminth egg recovery rates.
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