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Casa MDS, Vettori JDM, De Souza KM, Todeschini PRB, Miletti LC, Vogel CIG, Lima ALF, Fonteque JH. Prevalence and risk factors associated with Babesia bovis infection in Crioula Lageana cattle. J Infect Dev Ctries 2023; 17:1821-1828. [PMID: 38252736 DOI: 10.3855/jidc.18052] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/27/2023] [Indexed: 01/24/2024] Open
Abstract
INTRODUCTION Bovine babesiosis caused by the protozoan Babesia bovis is a worldwide disease and causes great economic damage to livestock. There are no studies on the epidemiology of this disease in native breeds such as Crioula Lageana cattle raised in the South of Brazil. METHODOLOGY DNA samples from 311 animals were amplified by polymerase chain reaction (PCR) for the identification of the gene rap-1 (Rhoptry Associated Protein 1) from B. bovis. An epidemiological questionnaire was used to determine the risk factors associated with infection. RESULTS The prevalence of B. bovis infection was 72% (224/311). Age and tick infestation affected infection. The factors associated with infection were the breeding objective (p = 0.042; CI = 0.746-0.995; OR = 0.861), contact of cattle with other animal species (p = 0.002; CI = 0.517-0.860; OR = 0.484), absence of tick control (p = < 0.001; CI = 0.074-0.480; OR = 0.188) and timing of tick treatment (p = 0.026; CI = 0.673-0.975; OR = 0.810), and these were considered to be factors that can protect against the disease. CONCLUSIONS The Crioula Lageana cattle breed has near enzootic stability with regards to B. bovis infection.
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Affiliation(s)
- Mariana da Silva Casa
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil
| | | | - Ketriane Mota De Souza
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil
| | | | - Luiz Claudio Miletti
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil
| | - Carla Ivane Ganz Vogel
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil
| | - André Luiz Ferreira Lima
- Department of Animal Husbandry and Rural Development, Santa Catarina Federal University, Florianópolis, SC, Brazil
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Samoel GVA, Fernandes FD, Roman IJ, Rodrigues BT, Miletti LC, Bräunig P, Guerra RR, Sangioni LA, Cargnelutti JF, Vogel FSF. Detection of anti-Trypanosoma spp. antibodies in cattle from southern Brazil. Rev Bras Parasitol Vet 2023; 33:e013723. [PMID: 38126573 PMCID: PMC10782508 DOI: 10.1590/s1984-29612024002] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/09/2023] [Indexed: 12/23/2023]
Abstract
Bovine trypanosomosis, caused by Trypanosoma vivax, is a disease that originated in Africa and currently affects cattle in several South American countries, including almost all Brazilian states. Despite the reports on T. vivax infection in southern Brazil, data on its circulation status is currently unavailable. In this study, we aimed to detect anti-Trypanosoma spp. IgG antibodies in cattle from Rio Grande do Sul and suggest areas with T. vivax transmission risk. A total of 691 serum samples from cattle in the intermediate regions of Rio Grande do Sul were analyzed using indirect immunofluorescence assay (IFA). The overall seroprevalence of anti-Trypanosoma antibodies in cattle was 24.6% (170/691). The detection rate ranged from 0-37.3%, with a high prevalence in the intermediate regions of Ijuí (37.3%), Uruguaiana (30.7%), and Passo Fundo (28.9%). Thus, these regions were suggested as possible bovine trypanosomosis risk areas due to the high seroprevalence. This is the first serological study to determine Trypanosoma spp. infection status in cattle from Rio Grande do Sul, providing data on the epidemiology of trypanosomosis in the state.
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Affiliation(s)
- Gisele Vaz Aguirre Samoel
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Fagner D’ambroso Fernandes
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
- Centro Universitário Ritter dos Reis – UniRitter, Porto Alegre, RS, Brasil
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Bibiana Teixeira Rodrigues
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | | | - Patrícia Bräunig
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Renata Rojas Guerra
- Departamento de Estatística, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
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Casa MDS, Giovambattista G, Fonteque GV, Miguel EL, Vogel CIG, Miletti LC, Takeshima SN, Fonteque JH. Identification of Anaplasma marginale, Babesia bovis and Babesia bigemina resistance alleles in Crioulo Lageano cattle using PCR-SBT and BoLA-DRB3 gene sequencing. Front Vet Sci 2023; 10:1256928. [PMID: 37781282 PMCID: PMC10540679 DOI: 10.3389/fvets.2023.1256928] [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: 07/11/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction The BoLA-DRB3 gene in cattle is associated with tolerance to several infectious diseases, such as neosporosis, dermatophilosis, leukosis, and mastitis. Methods This study used PCR-SBT and BoLA-DRB3 gene sequencing to determine the association between the presence or absence of Anaplasma marginale, Babesia bovis, and Babesia bigemina infections in 208 Crioulo Lageano cattle and alleles present in the population. The chi-square test and odds ratio analysis were employed to establish the association. Results Of the BoLA-DRB3 gene alleles present in the population, two alleles were significantly associated with resistance to A. marginale infections: BoLA-DRB3001:01 (p < 0.001; OR = 0.224), which had a frequency of 7.93%, and BoLA-DRB3024:06 (p = 0.007; OR < 0.00001), which had a frequency of 0.72%. Regarding B. bovis infection, the BoLA-DRB3*011:01 allele (p = 0.002; OR = 0.271) had a frequency of 6% in the population and was associated with resistance to the infection. None of the alleles was associated with resistance to infection by B. bigemina. Discussion The Crioulo Lageano breed has alleles that may confer resistance against infection by A. marginale and B. bovis.
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Affiliation(s)
- Mariana da Silva Casa
- Graduate Program in Animal Science (PPGCA), State University of Santa Catarina (UDESC), Lages, Brazil
| | - Guillermo Giovambattista
- Facultad de Ciencias Veterinarias UNLP, IGEVET–Institute of Veterinary Genetics, La Plata, Argentina
| | - Graziela Vieira Fonteque
- Graduate Program in Animal Science (PPGCA), State University of Santa Catarina (UDESC), Lages, Brazil
| | - Ellen Lara Miguel
- Scientific Initiation Program, State University of Santa Catarina (UDESC), Lages, Brazil
| | - Carla Ivane Ganz Vogel
- Department of Animal Production and Food, State University of Santa Catarina (UDESC), Lages, Brazil
| | - Luiz Claudio Miletti
- Department of Animal Production and Food, State University of Santa Catarina (UDESC), Lages, Brazil
| | - Shin-Nosuke Takeshima
- Department of Food and Nutrition, Faculty of Human Life, Jumonji University, Niiza, Saitama, Japan
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Marques J, das Neves GB, Ungri AM, de Souza Franco C, Galdino NADL, Ribeiro BG, Borges GK, Miletti LC. Comparative study of three novel ion exchange resins with DEAE-cellulose for the purification of Trypanosoma evansi. Anal Biochem 2023; 676:115226. [PMID: 37422062 DOI: 10.1016/j.ab.2023.115226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/30/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 07/10/2023]
Abstract
Ion exchange chromatography is a method that uses the different surface charges of trypanosomes and blood cells to separate them. This makes it possible to use molecular and immunological methods to diagnose or study these protozoans. DEAE-cellulose resin is commonly used to perform this method. The goal of this study was to compare three novel chromatographic resins designated as PURIFICA™ (Y-C2N®, Y-HONOH®, and Y-CNC3®). The resins were evaluated based on their ability to isolate the parasite, purification time, examination of parasite viability and morphology, and trypanosome recovery potential after passing through the columns. In terms of the evaluated parameters, there was no significant difference between DEAE-cellulose and the three tested resins in most experiments. However, PURIFICA™ (Y-C2N®, Y-HONOH®, and Y-CNC3®) resins are less expensive and easier to prepare than DEAE-Cellulose, making them an alternative for the purification of Trypanosoma evansi.
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Affiliation(s)
- Júlia Marques
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | - Gabriella Bassi das Neves
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | - Amanda Martins Ungri
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | - Cíntia de Souza Franco
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | | | - Brenda Guedes Ribeiro
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | - Gabriela Kaiser Borges
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
| | - Luiz Claudio Miletti
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC). Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
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Ramírez MI, Ruiz RDC, Nogueira-Melo GDA, Miletti LC, Cortez M, Negri M, Palmisano G, González J. Challenges and perspectives in research and teaching of host pathogen interaction topics: new post-pandemic times to Brazil and other South American countries. Mem Inst Oswaldo Cruz 2023; 118:e220212. [PMID: 37222308 DOI: 10.1590/0074-02760220212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 02/27/2023] [Indexed: 05/25/2023] Open
Abstract
Here is our proposal to improve learning in biomedical sciences for graduate and undergraduate courses with a broad vision integrating disciplines such as molecular cell biology, biochemistry, and biophysics around concepts of pathogen interaction within vertebrate and invertebrate hosts. Our paradigm is based on the possibility offered by the pandemic to have remote activities that give access to students and researchers from different places in Brazil and Latin American countries to discuss science. A multidisciplinary view of host-pathogen interaction allows us to understand better the mechanisms involved in the pathology of diseases, as well as to formulate broad strategies for the diagnosis, treatment, and control of thereof. The approach to integrating heterogeneous groups in science involves the critical analysis of national scientific resource distribution, where only some have the possibilities to conduct competitive scientific research. Solid theoretical training, contact, collaboration with groups of excellence, and training within a multidisciplinary network are our proposals for a permanent platform of scientific strengthening and dissemination for Latin America. Here we will review the concept of host-pathogen interaction, the type of institutions where it is taught and researched, new trends in active teaching methodologies, and the current political context in science.
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Affiliation(s)
- Marcel I Ramírez
- Fundação Oswaldo Cruz-Fiocruz, Instituto Carlos Chagas, Extracellular Vesicles and Host-Parasite Interactions Research Group, Laboratório de Biologia Molecular e Sistemática de Tripanossomatideos, Curitiba, PR, Brasil
| | | | | | - Luiz Claudio Miletti
- Universidade do Estado de Santa Catarina, Laboratório de Bioquímica de Hemoparasitas e Vetores, Lages, SC, Brasil
| | - Mauro Cortez
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Parasitologia, São Paulo, SP, Brasil
| | - Melyssa Negri
- Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - Giuseppe Palmisano
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Parasitologia, São Paulo, SP, Brasil
| | - Jorge González
- Universidad de Antofagasta, Unidad de Parasitología Molecular, Departamento de Tecnología Médica, Antofagasta, Antofagasta, Chile
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Biezus G, Grima de Cristo T, da Silva Casa M, Lovatel M, Vavassori M, Brüggemann de Souza Teixeira M, Miletti LC, Maciel da Costa U, Assis Casagrande R. Progressive and regressive infection with feline leukemia virus (FeLV) in cats in southern Brazil: Prevalence, risk factors associated, clinical and hematologic alterations. Prev Vet Med 2023; 216:105945. [PMID: 37209619 DOI: 10.1016/j.prevetmed.2023.105945] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 09/04/2022] [Revised: 05/11/2023] [Accepted: 05/16/2023] [Indexed: 05/22/2023]
Abstract
Enzyme-linked immunosorbent assay (ELISA) for viral antigen is commonly used for the diagnosis of progressive feline leukemia virus (FeLV) infection but is not able to determine the true prevalence of infection when used as the sole test. Additional testing to detect proviral DNA will identify regressive (antigen negative) FeLV infections as well as progressive infections. Therefore, this study aimed to determine the prevalence of progressive and regressive FeLV infection, outcome-associated factors, and hematologic changes. A cross-sectional study was performed on 384 cats selected from routine hospital care. Blood samples were subjected to complete blood count, ELISA for FeLV antigen and FIV antibody, and nested PCR amplifying the U3- LTR region and gag gene, which are conserved in most exogenous FeLV. The prevalence of FeLV infection was 45.6% (CI95% 40.6-50.6%). The prevalence of progressive infection (FeLV+P) was 34.4% (CI95% 29.6-39.1%), that of regressive infection (FeLV+R) was 10.4% (CI95% 7.4-13.4%), for discordant but positive results 0.8% (CI95% 0.75-0.84%), for FeLV+P coinfected with FIV 2.6% (CI95% 1.2-4.0%), and FeLV+R coinfected with FIV 1.5% (CI95% 0.3-2.7%). Male cats were three times more likely to be in the FeLV+P group. Cats coinfected with FIV were 4.8 times more likely to belong to the FeLV+R group. In the FeLV+P group, the main clinical changes were lymphoma (38.5%), anemia (24.4%), leukemia (17.9%), concomitant infections (15.4%), and feline chronic gingivostomatitis - FCGS (3.8%). In the FeLV+R group, the main clinical signs were anemia (45.4%), leukemia (18.2%), concomitant infections (18.2%), lymphoma (9.1%), and FCGS (9.1%). Cats in the FeLV+P and FeLV+R groups showed mainly thrombocytopenia (56.6% and 38.2%), non-regenerative anemia (32.8% and 23.5%), and lymphopenia (33.6% and 20.6%). Hemoglobin concentration, packed cell volume (PCV), platelet count, lymphocytes, and eosinophils in the FeLV+P and FeLV+R groups had lower medians than the control group (FeLV/FIV-uninfected, healthy). Erythrocyte and eosinophil counts were statistically different among the three groups, with the medians of the FeLV+P and FeLV+R groups being lower than those of the control group. In addition, the median PCV and band neutrophil counts were higher in FeLV+P than in FeLV+R. Our results show a high prevalence of FeLV, different factors associated with the course of infection, and more frequent and severe hematologic changes in progressive infections compared with regressive infections.
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Affiliation(s)
- Giovana Biezus
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Thierry Grima de Cristo
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Mariana da Silva Casa
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Mariângela Lovatel
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Mayara Vavassori
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | | | - Luiz Claudio Miletti
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Ubirajara Maciel da Costa
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Renata Assis Casagrande
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil.
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Fiorin FE, Casa MDS, Griebeler LB, Goedel MF, Nascimento LFND, Neves GBD, Fonteque GV, Miletti LC, Saito ME, Fonteque JH. Prevalence of natural infection by Trypanosoma evansi in Crioula LAGEANA cattle. Microb Pathog 2023; 180:106143. [PMID: 37146700 DOI: 10.1016/j.micpath.2023.106143] [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: 02/21/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/07/2023]
Abstract
Cattle trypanosomiasis negatively impacts animal husbandry due to high morbidity, productivity losses, and mortality rates. Knowledge regarding Trypanosoma evansi infections in locally adapted breeds remains limited. Some cattle breeds exhibit trypanotolerance, requiring the determination of prevalence, as well as related tolerance and resistance characteristics, for disease control programs. This study aimed to determine T. evansi prevalence in Crioula Lageana cattle and associate clinical, hematological, and biochemical aspects with the infection to further research on tolerance in this population. Blood samples from 310 Crioula Lageana cattle were tested using Polymerase Chain Reaction (PCR) and Indirect Immunofluorescence Reaction (IIFR). T. evansi prevalence was 8% (24/310) using PCR and 4% (11/310) using IIFR. Positive animals showed increased ruminal movements, elevated eosinophil counts, and reduced monocyte numbers, but both latter within the reference range for the species. Albumin concentrations were low in positive cases and remained below the reference range limit for both groups. However, triglycerides exceeded the physiological range for the species in both positive and negative groups. Increased gamma-glutamyltransferase (GGT) activity was observed in positive animals. In conclusion, Crioula Lageana cattle exhibited enzootic instability with a low T. evansi infection prevalence when assessed using PCR and IIFR techniques. Furthermore, the animals did not display clinical, hematological, or biochemical alterations attributable to the presence of hemoparasites.
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Affiliation(s)
- Felipe Eduardo Fiorin
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil
| | - Mariana da Silva Casa
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil
| | | | - Mariana Fuchs Goedel
- Department of Veterinary Medicine, Santa Catarina State University, Lages, SC, Brazil
| | | | - Gabriella Bassi das Neves
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil
| | | | - Luiz Claudio Miletti
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil; Department of Animal Production and Food, Santa Catarina State University, Lages, SC, Brazil
| | - Mere Erika Saito
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil; Department of Veterinary Medicine, Santa Catarina State University, Lages, SC, Brazil
| | - Joandes Henrique Fonteque
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil; Department of Veterinary Medicine, Santa Catarina State University, Lages, SC, Brazil.
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Cipriani DS, Borges GK, Povaluk AP, Stipp MC, Casagrande RA, Vogel CIG, Miletti LC, Bastos-Pereira AL. Experimental Trypanosoma evansi infection induces pain along with oxidative stress, prevented by COX-2 inhibition. Exp Parasitol 2023; 247:108477. [PMID: 36720379 DOI: 10.1016/j.exppara.2023.108477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/04/2022] [Accepted: 01/26/2023] [Indexed: 01/29/2023]
Affiliation(s)
- Daniel Sérgio Cipriani
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Gabriela Kaiser Borges
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Ana Paula Povaluk
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Maria Carolina Stipp
- Federal University of Paraná, Department of Pharmacology, Curitiba, Paraná, Brazil
| | - Renata Assis Casagrande
- Santa Catarina State University, Animal Science Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Carla Ivane Ganz Vogel
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil
| | - Amanda Leite Bastos-Pereira
- Santa Catarina State University, Biochemistry and Molecular Biology Multicentric Postgraduation Program, Lages, Santa Catarina, Brazil.
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Marian L, Withoeft JA, Costa LDS, Ribeiro LR, Melo IC, Alves RS, Baumbach LF, Pinto MGL, Snak A, Miletti LC, Ferraz SM, Sfaciotte RAP, Canal CW, Casagrande RA. Causes of fetal death in the Flemish cattle herd in Brazil. Vet World 2023; 16:766-772. [PMID: 37235167 PMCID: PMC10206958 DOI: 10.14202/vetworld.2023.766-772] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/09/2023] [Indexed: 05/28/2023] Open
Abstract
Background and Aim Flemish cattle in Brazil are on the brink of extinction and are found only in one herd in Lages, Santa Catarina State. This study aimed to uncover the reasons for the recurring abortions in the Flemish cattle herd. Materials and Methods Seventeen Flemish fetuses underwent postmortem examinations, with samples collected for histopathology and microbiology culture tests, polymerase chain reaction (PCR) test for Neospora caninum, and reverse transcription-PCR (RT-PCR) test for bovine viral diarrhea virus (BVDV) from 2015 to 2020. Results Of the 17 fetuses, N. caninum was the most common diagnosis and was found in 88% (15/17). One fetus (5.8%) had a coinfection with N. caninum and Citrobacter amalonaticus, leading to fibrinonecrotic pericarditis. All fetuses tested negative for BVDV by RT-PCR. Of the 107 dams tested by indirect immunofluorescence assay, 26 (25.2%) were anti-N. caninum seropositive, with 17 (65.4%) aborting and 5 (19.2%) having estrus repetition. Reverse transcription-PCR results showed that 9 (8.4%) of the serum samples collected from dams tested positive, which tested follow-up test 3 months later, indicating a BVDV transient infection. The factors that contributed to neosporosis included dogs' access to pastures and improper disposal of fetal remains, which made it easier for dogs to consume them. Conclusion This study warns the occurrence of N. caninum as a cause of reproductive disorders that can lead to abortion in the studied Flemish cattle herd.
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Affiliation(s)
- Lucas Marian
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
| | - Jéssica Aline Withoeft
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
| | - Leonardo da Silva Costa
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
| | - Luiza Ramos Ribeiro
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
| | - Isadora Cristina Melo
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
| | - Raquel Silva Alves
- Laboratory of Veterinary Virology, Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre, Rio Grande do Sul, Brazil
| | - Letícia Ferreira Baumbach
- Laboratory of Veterinary Virology, Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Alessandra Snak
- Laboratory of Parasitology and Parasitic Diseases, UDESC, Lages, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Laboratory of Biochemistry of Hemoparasites and Vectors, UDESC, Lages, Santa Catarina, Brazil
| | - Sandra Maria Ferraz
- Center for Animal Microbiological Diagnosis, UDESC, Lages, Santa Catarina, Brazil
| | | | - Cláudio Wageck Canal
- Laboratory of Veterinary Virology, Universidade Federal do Rio Grande do Sul (UFRGS) Porto Alegre, Rio Grande do Sul, Brazil
| | - Renata Assis Casagrande
- Laboratory of Animal Pathology, Universidade do Estado de Santa Catarina (UDESC), Lages, Santa Catarina, Brazil
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10
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Biezus G, Grima de Cristo T, Bassi das Neves G, da Silva Casa M, Barros Brizola P, Silvestre Sombrio M, Miletti LC, Assis Casagrande R. Phylogenetic identification of feline leukemia virus A and B in cats with progressive infection developing into lymphoma and leukemia. Virus Res 2023; 329:199093. [PMID: 36924831 DOI: 10.1016/j.virusres.2023.199093] [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: 10/11/2022] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023]
Abstract
To date, only a few studies have examined the impacts of feline leukemia virus (FeLV) subgroups on disease development in spontaneously infected cats. The present study identified FeLV-A and FeLV-B subgroups in cats with lymphoma and leukemia and explored the phylogenetic relationships of env sequences. Twenty-six cats with lymphoma (n=16) or leukemia (n=10) were selected. FeLV p27 antigen positivity was determined using ELISA, and proviral DNA in blood samples was detected using nested PCR. Positive animals in both tests were classified as cases of FeLV progressive infection and subjected to a second nested PCR for env amplification and subgroup determination. Six samples of FeLV-A and five samples of FeLV-B were sequenced using the Sanger method, and the results were used to build a phylogenetic tree and estimate evolutionary divergence. Among cats with lymphoma, 68.8% carried FeLV-AB and 31.2% FeLV-A. Among cats with leukemia, 70% carried FeLV-AB and 30% FeLV-A. Regarding cat characteristics, 50% were young, 30.8% young adults, and 19.2% adults; 88.5% were mixed-breed and 11.5% pure breed; and 42.3% were males and 57.7% were females. Among lymphomas, 62.5% were mediastinal, 31.3% multicentric, and 6.3% extranodal. Regarding histological classification, lymphoblastic and small non-cleaved-cell lymphomas were the most frequently detected. Among leukemia cases, 30% were acute lymphoid, 30% chronic myeloid, and 40% acute myeloid. Phylogenetic analysis showed that FeLV-A SC sequences were closely related to the Arena, Glasgow-1, and FeLV-FAIDS variants. Meanwhile, FeLV-B SC sequences were divergent from one another but similar to the endogenous FELV env gene (enFeLV). In conclusion, FeLV-AB is prevalent in cats with lymphoma and leukemia, highlighting the genetic diversity involved in the pathogenesis of these neoplasms in Brazil.
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Affiliation(s)
- Giovana Biezus
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Thierry Grima de Cristo
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Gabriela Bassi das Neves
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Mariana da Silva Casa
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Paula Barros Brizola
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Marina Silvestre Sombrio
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Renata Assis Casagrande
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil.
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11
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Moreira RS, Calomeno NA, das Neves GB, do Nascimento LFN, Filho VB, Wagner G, Miletti LC. Trypanosoma evansi secretome carries potential biomarkers for Surra diagnosis. J Proteomics 2023; 272:104789. [PMID: 36464092 DOI: 10.1016/j.jprot.2022.104789] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 08/25/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022]
Abstract
Trypanosoma evansi is a parasite that is phylogenetically close to Trypanosoma brucei and is the causative agent of a disease known as surra. Surra is responsible for a high mortality rate in livestock and large economic losses in the Americas, Africa, and Asia. This work aimed to analyze in vitro secreted proteins from T. evansi and identify potential treatment and diagnostic biomarkers for surra diagnosis. Two groups were used. In one group the parasites were purified using a DEAE-Cellulose column and maintained in a secretion medium while in the other group the parasites were not purified. Each group was further divided to be maintained at either 37 °C or 27 °C. We identified 246 proteins through mass spectrometry and found that the temperature appears to modulate protein secretion. We found minimal variations in the protein pools from pure and non-purified sets. We observed an emphasis on proteins associated to vesicles, glycolysis, and cellular homeostasis through the enrichment of GO. Also, we found that most secretome proteins share homologous proteins with T. b. brucei, T. b. gambiense, T. vivax, T. equiperdum, and T. b. rhodesiense secretome but unique T. evansi epitopes with potential biomarkers for surra diagnosis were detected. SIGNIFICANCE: Trypanosoma evansi is a parasite of African origin that is phylogenetically close to Trypanosoma brucei. As with other trypanosomatids and blood parasites, its infection causes non-pathognomonic symptoms, which makes its diagnosis difficult. One great problem is the fact that no diagnostic test differentiates between Trypanosoma equiperdum and T. evansi, which is a problem in South America and Asia, and Africa. Thus, it is urgent to study the biochemistry of the parasite to discover proteins that can be used for differential diagnosis or be possible therapeutic targets. In addition, the study of the secretome can point out proteins that are used by the parasite in its interactions with the host, helping to understand the progression of the disease.
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Affiliation(s)
- Renato Simões Moreira
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC 88520-000, Brazil; Instituto Federal de Santa Catarina (IFSC), Campus Gaspar, R. Adriano Kormann, 510 - Bela Vista, Gaspar, SC 89111-009, Brazil
| | - Nathália Anderson Calomeno
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC 88520-000, Brazil
| | - Gabriella Bassi das Neves
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC 88520-000, Brazil
| | - Luiz Flávio Nepomuceno do Nascimento
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC 88520-000, Brazil
| | - Vilmar Benetti Filho
- Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Campus João David Ferreira Lima, Setor F, Bloco A, Sala 318, Caixa postal 476, Trindade, Florianópolis, SC 88040-970, Brazil
| | - Glauber Wagner
- Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Campus João David Ferreira Lima, Setor F, Bloco A, Sala 318, Caixa postal 476, Trindade, Florianópolis, SC 88040-970, Brazil
| | - Luiz Claudio Miletti
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC 88520-000, Brazil.
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12
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da Rosa Maciel A, Biezus G, de Cristo TG, Miletti LC, da Costa Maciel U, Medeiros ALV, Xavier MGN, Casagrande RA. Mycoplasma haemofelis infection and its correlation with feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) in cats in Southern Brazil. Comp Immunol Microbiol Infect Dis 2023; 93:101941. [PMID: 36630814 DOI: 10.1016/j.cimid.2022.101941] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 12/18/2022] [Accepted: 12/30/2022] [Indexed: 01/02/2023]
Abstract
A cross-sectional study was conducted on 274 cats in Southern Brazil to estimate the prevalence of Mycoplasma haemofelis PCR, associated factors, and its correlation with ELISA for FeLV and FIV. The apparent prevalence of M. haemofelis was 6.6% (18/274) (95% CI: 3.6-9.5%), of which 33.3% (6/18) had co-infection with FeLV, 5.6% (1/18) with FIV, and 5.6% (1/18) with both. Male cats were more likely to be positive for M. haemofelis [OR: 7.07 (1.97-25.34)]. Only three M. haemofelis-positive cats showed related clinical changes, such as mucosal pallor. A statistically significant difference was observed between M. haemofelis-positive cats and the negative control group for age, hemoglobin concentration, packed cell volume, and rod neutrophil counts. Mycoplasma haemofelis is prevalent in southern Brazil, with a higher risk in male cats. Most cats could be classified as asymptomatic carriers since they were healthy.
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Affiliation(s)
- Aline da Rosa Maciel
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Giovana Biezus
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Thierry Grima de Cristo
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Luiz Claudio Miletti
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Ubirajara da Costa Maciel
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Amanda Larissa Vicente Medeiros
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Maysa Garlet Nunes Xavier
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
| | - Renata Assis Casagrande
- Department of Veterinary Medicine, Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090 Lages, Santa Catarina, Brazil.
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13
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Ramos CJR, de Souza Franco C, da Luz SP, Marques J, de Souza KM, do Nascimento LFN, das Neves GB, Moreira RS, Miletti LC. First record of Trypanosoma evansi DNA in Dichelacera alcicornis and Dichelacera januarii (Diptera: Tabanidae) flies in South America. Parasit Vectors 2023; 16:4. [PMID: 36604766 PMCID: PMC9817266 DOI: 10.1186/s13071-022-05562-7] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/26/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Trypanosoma evansi infects a large number of wild and domestic animals and causes a spoliative disease known as surra. It is mechanically transmitted, mainly by biting flies of the genera Tabanus and Stomoxys. The detection of T. evansi DNA in the feeding apparatus of Dichelacera alcicornis and Dichelacera januarii from South America is reported, to the best of our knowledge, for the first time. METHODS Tabanids were collected weekly from February 2018 to February 2019 from two sites. The feeding apparatus was removed and DNA extraction, polymerase chain reaction and sequencing were performed. RESULTS A 205-base pair fragment of the variant surface protein RoTat 1.2 gene, confirmed by DNA sequencing, was amplified from the feeding apparatus of D. alcicornis and D. januarii. CONCLUSIONS This is, to the best of our knowledge, the first record of T. evansi DNA in South American tabanids.
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Affiliation(s)
- Carlos José Raupp Ramos
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil ,grid.440565.60000 0004 0491 0431Universidade Federal da Fronteira Sul, Campus Laranjeiras do Sul, Rodovia BR 158—Km 405, Laranjeiras do Sul, PR 85301-970 Brazil
| | - Cintia de Souza Franco
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Sabrina Pogere da Luz
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Júlia Marques
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Ketriane Mota de Souza
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Luiz Flávio Nepomuceno do Nascimento
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Gabriella Bassi das Neves
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
| | - Renato Simões Moreira
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil ,grid.462200.20000 0004 0370 3270Instituto Federal de Santa Catarina (IFSC), Campus Lages, Rua Heitor Villa Lobos 222, São Francisco, Lages, SC 88506-400 Brazil
| | - Luiz Claudio Miletti
- grid.412287.a0000 0001 2150 7271Laboratório de Bioquímica de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, Lages, SC 2090 Brazil
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14
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da Costa LS, Withoeft JA, Bilicki JV, Melo IC, Snak A, das Neves GB, Miletti LC, de Moura AB, Casagrande RA. Neospora caninum-associated abortions in cattle from Southern Brazil: Anatomopathological and molecular characterization. Vet Parasitol Reg Stud Reports 2022; 36:100802. [PMID: 36436886 DOI: 10.1016/j.vprsr.2022.100802] [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: 08/25/2021] [Revised: 10/10/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
Abstract
This study aimed to evaluate the N. caninum associated abortions in cattle in the state of Santa Catarina, in the southern Brazil. Aborted bovine fetuses were necropsied, submitting organ samples for histopathological evaluation. Brain fragments were analyzed by polymerase chain reaction (PCR). The diagnosis of abortion due to N. caninum was established through histopathology and molecular analysis in 53.84% (28/52) of the cases, with PCR detection in 71.42% (20/28). The histopathological evaluation showed lesions in 75% of the cases, characterized by mononuclear necrotizing encephalitis, mononuclear myocarditis, mononuclear myositis, mixed placentitis, and mononuclear pneumonia. Neospora caninum was the primary etiological agent associated with causes of abortion in cattle in the present study.
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Affiliation(s)
- Leonardo Silva da Costa
- Laboratório de Patologia Animal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Jéssica Aline Withoeft
- Laboratório de Patologia Animal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - João Vitor Bilicki
- Laboratório de Patologia Animal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Isadora Cristina Melo
- Laboratório de Patologia Animal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Alessandra Snak
- Laboratório de Parasitologia e Doenças Parasitárias, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Gabriella Bassi das Neves
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Anderson Barbosa de Moura
- Laboratório de Parasitologia e Doenças Parasitárias, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil
| | - Renata Assis Casagrande
- Laboratório de Patologia Animal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina - Av. Luís de Camões, 2090, Conta Dinheiro, Lages, Santa Catarina, Brazil.
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15
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Moreira RS, Filho VB, Calomeno NA, Wagner G, Miletti LC. EpiBuilder: A Tool for Assembling, Searching, and Classifying B-Cell Epitopes. Bioinform Biol Insights 2022; 16:11779322221095221. [PMID: 35571557 PMCID: PMC9102138 DOI: 10.1177/11779322221095221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/29/2022] [Indexed: 11/16/2022] Open
Abstract
Epitopes are portions of a protein that are recognized by antibodies. These small amino acid sequences represent a significant breakthrough in a branch of bioinformatics called immunoinformatics. Various software are available for linear B-cell epitope (BCE) prediction such as ABCPred, SVMTrip, EpiDope, and EpitopeVec; a well-known BCE predictor is BepiPred-2.0. However, despite the prediction, there are several essential steps, such as epitope assembly, evaluation, and searching for epitopes in other proteomes. Here, we present EpiBuilder (https://epibuilder.sourceforge.io), a user friendly software that assists in epitope assembly, classifying and searching using input results of BepiPred-2.0. EpiBuilder generates several output results from these data and supports a proteome-wide processing approach. In addition, this software provides the following features: Chou & Fasman beta-turn prediction, Emini surface accessibility prediction, Karplus and Schulz flexibility prediction, Kolaskar and Tongaonkar antigenicity, Parker hydrophilicity prediction, N-glycosylation domains, and hydropathy. These information generate a unique topology for each epitope, visually demonstrating its characteristics. The software can search the entire epitope sequence in various FASTA files, and it allows to use BLASTP to identify epitopes that eventually have sequence variations. As an EpiBuilder application, we developed a epitope dataset from the protozoan Trypanosoma brucei gambiense, the gram-positive bacterium Clostridioides difficile, and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
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Affiliation(s)
- Renato Simões Moreira
- Laboratório de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Lages, Brazil
- Instituto Federal de Santa Catarina (IFSC), Lages, Brazil
| | - Vilmar Benetti Filho
- Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Nathália Anderson Calomeno
- Laboratório de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Lages, Brazil
| | - Glauber Wagner
- Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Florianópolis, Brazil
- Glauber Wagner, Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Campus João David Ferreira Lima, Setor F, Bloco A, Sala 318, Caixa postal 476, Trindade, Florianópolis 88040-970, SC, Brazil.
| | - Luiz Claudio Miletti
- Laboratório de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Lages, Brazil
- Luiz Claudio Miletti, Laboratório de Hemoparasitas e Vetores, Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luiz de Camões, 2090 Bairro Conta Dinheiro, Lages 88520-000, SC, Brazil.
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16
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Souza KM, Mendes IC, Dall'Igna DM, Repolês BM, Resende BC, Moreira RS, Miletti LC, Machado CR, Vogel CIG. Bioinformatics and expression analysis of the Xeroderma Pigmentosum complementation group C (XPC) of Trypanosoma evansi in Trypanosoma cruzi cells. BRAZ J BIOL 2021; 83:e243910. [PMID: 34190757 DOI: 10.1590/1519-6984.243910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 03/23/2021] [Indexed: 11/22/2022] Open
Abstract
Nucleotide excision repair (NER) acts repairing damages in DNA, such as lesions caused by cisplatin. Xeroderma Pigmentosum complementation group C (XPC) protein is involved in recognition of global genome DNA damages during NER (GG-NER) and it has been studied in different organisms due to its importance in other cellular processes. In this work, we studied NER proteins in Trypanosoma cruzi and Trypanosoma evansi, parasites of humans and animals respectively. We performed three-dimensional models of XPC proteins from T. cruzi and T. evansi and observed few structural differences between these proteins. In our tests, insertion of XPC gene from T. evansi (TevXPC) in T. cruzi resulted in slower cell growth under normal conditions. After cisplatin treatment, T. cruzi overexpressing its own XPC gene (TcXPC) was able to recover cell division rates faster than T. cruzi expressing TevXPC gene. Based on these tests, it is suggested that TevXPC (being an exogenous protein in T. cruzi) interferes negatively in cellular processes where TcXPC (the endogenous protein) is involved. This probably occurred due interaction of TevXPC with some endogenous molecules or proteins from T.cruzi but incapacity of interaction with others. This reinforces the importance of correctly XPC functioning within the cell.
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Affiliation(s)
- K M Souza
- Universidade do Estado de Santa Catarina, Departamento de Produção Animal e Alimentos, Lages, SC, Brasil
| | - I C Mendes
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Belo Horizonte, MG, Brasil
| | - D M Dall'Igna
- Universidade do Estado de Santa Catarina, Departamento de Produção Animal e Alimentos, Lages, SC, Brasil.,Universidade do Planalto Catarinense, Lages, SC, Brasil
| | - B M Repolês
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Belo Horizonte, MG, Brasil
| | - B C Resende
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Belo Horizonte, MG, Brasil
| | - R S Moreira
- Universidade do Estado de Santa Catarina, Departamento de Produção Animal e Alimentos, Lages, SC, Brasil.,Instituto Federal de Santa Catarina, Departamento de Ensino, Pesquisa e Extensão, Lages, SC, Brasil
| | - L C Miletti
- Universidade do Estado de Santa Catarina, Departamento de Produção Animal e Alimentos, Lages, SC, Brasil
| | - C R Machado
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Belo Horizonte, MG, Brasil
| | - C I G Vogel
- Universidade do Estado de Santa Catarina, Departamento de Produção Animal e Alimentos, Lages, SC, Brasil
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17
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Pinheiro GRG, Ferreira LL, Teixeira Silva AL, Cardoso MS, Ferreira-Júnior Á, Steindel M, Grisard EC, Miletti LC, Bartholomeu DC, Bueno LL, Santos RL, Fujiwara RT. A recombinant protein (MyxoTLm) for the serological diagnosis of acute and chronic Trypanosoma vivax infection in cattle. Vet Parasitol 2021; 296:109495. [PMID: 34147019 DOI: 10.1016/j.vetpar.2021.109495] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/22/2021] [Accepted: 06/04/2021] [Indexed: 11/19/2022]
Abstract
Human trypanosomiases and animal trypanosomoses are caused by distinct protozoan parasites of the genus Trypanosoma. The etiological agents of bovine trypanosomosis (BT) are T. vivax, T. congolense, or T. brucei, whose acute infections are initially characterized by hyperthermia, following moderate to severe anemia, subcutaneous edema, lethargy, reduced milk production, progressive weight loss, enlarged lymph nodes, reproductive disorders and death. Animals that survive the acute phase might recover and progress to the chronic, often asymptomatic, phase of infection. Despite their low sensitivity due to the characteristic low parasitemia, simple and costless direct parasitological examinations are the preferred diagnostic methods for animals. Thus, most of the epidemiological studies of BT are based on serological techniques using crude antigen. In this study, we describe the use of the MyxoTLm recombinant protein as an antigen on serological assays. Anti-T. vivax IgM and anti-T. vivax IgG ELISA assays using purified MyxoTLm revealed specificity rates of 91.30 % and 95.65 % and sensitivity rates of 82.35 % and 88.23 %, respectively, being higher than reported for crude antigens. Also, MyxoTLm demonstrated a good performance to detect IgM (ROC curve area = 0.8568) and excellent performance to detect IgG (ROC curve area = 0.9565) when compared to a crude antigen. T. evansi crude antigen used in the indirect anti-T. vivax IgM ELISA reached 70.58 % sensitivity and 78.26 % specificity, and had a lower test performance (ROC curve area = 0.7363). When applied to the anti-T. vivax IgG ELISA, the crude antigen reached 82.35 % sensitivity and 69.56 % specificity, also presenting a low performance with area under the ROC curve of 0.7570. Therefore, the use of MyxoTLm as an antigen on serological diagnosis of BT revealed to increase the sensitivity and the specificity if compared to crude antigens.
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Affiliation(s)
| | - Lorena Lopes Ferreira
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Luiza Teixeira Silva
- Instituto de Farmacologia e Biologia Molecular, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Mariana Santos Cardoso
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Álvaro Ferreira-Júnior
- Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Mario Steindel
- Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Edmundo Carlos Grisard
- Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Santa Catarina, Brazil
| | | | - Lilian Lacerda Bueno
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Renato Lima Santos
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo Toshio Fujiwara
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Snak A, Henrique SM, Sebolt APR, Cristani J, Sato ME, Miletti LC, de Moura AB. Experimental infection of tachyzoites of the NC1 strain of Neosporacaninum in female swine. Parasitol Res 2021; 120:1049-1057. [PMID: 33506333 DOI: 10.1007/s00436-021-07054-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 01/12/2021] [Indexed: 11/26/2022]
Abstract
Neospora caninum is a protozoan that can cause reproductive problems in several animal species. Although N. caninum infection has been reported in swine, the pathogenesis and clinical signs are not fully known in this species. The objective of this work was to evaluate the effect of experimental infection with tachyzoites of the N. caninum strain Nc1 in swine matrices at different stages of gestation. For that purpose, 12 gilts, seronegative for N. caninum and T. gondii, were selected and allocated into four groups of three animals each. Animals in group A were not inoculated (control) and animals in groups B, C, and D were inoculated intravenously with of 2.9 × 107 tachyzoites, 30 days before conception, and at 45 and 90 days of gestation, respectively. Temperature, heart rate, blood, saliva, and vaginal mucus samples from the animals were collected periodically until the time of delivery for the investigation of IgG and IgM antibodies against N. caninum using IFAT and PCR to detect the parasite DNA. All gilts sero-converted from 5 and 7 DPI (days postinoculation) to IgM and IgG, respectively. Two gilts showed hypothermia on the 5th and 7th DPI, and five inoculated animals had leukocytosis on the 7th DPI. It was possible to detect DNA of N. caninum in samples of saliva (33/84), vaginal mucus (17/84), and blood (2/84). Based on serology (IgM) and PCR, three animals in group B showed evidence of reappearance of the infection during pregnancy. It is concluded that N. caninum can cause clinical signs in infected swine females, in addition to indicating saliva as a suitable diagnostic biological material for the detection of N. caninum DNA in this animal species.
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Affiliation(s)
- Alessandra Snak
- Universidade do Estado de SantaCatarina, Lages, Santa Catarina, Brazil.
| | | | | | - José Cristani
- Universidade do Estado de SantaCatarina, Lages, Santa Catarina, Brazil
| | - Mere Erika Sato
- Universidade do Estado de SantaCatarina, Lages, Santa Catarina, Brazil
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Calomeno NA, Moreira RS, Fernandes LA, Batista F, Marques J, Wagner G, Miletti LC. Serum proteomic signature of Trypanosoma evansi -infected mice for identification of potential biomarkers. Vet Parasitol 2021; 290:109342. [PMID: 33422749 DOI: 10.1016/j.vetpar.2021.109342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/13/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/30/2022]
Abstract
Trypanosoma evansi is the agent of "surra," a trypanosomosis endemic in many areas worldwide. Trypanosoma proteins released/secreted during infection are attractive biomarkers for disease detection and monitoring. Using liquid chromatography-tandem mass spectrometry (LC-MS/MS), we performed a comprehensive analysis of the serum proteome of mice infected with T.evansi and detected changes in the abundance of parasite and host serum proteins during infection. Following bioinformatics analysis, 30 T. evansi proteins were identified in the mice serum including known targets such as pyruvate kinase 1, β-tubulin, actin A, heat shock protein 70, and cyclophilin A. We also identified two exclusive VSG epitopes which are novel putative biomarker targets. In addition, upregulation of 31 mouse proteins, including chitinase-like protein 3 and monocyte differentiation antigen CD14, were observed. Identification of parasite-specific biomarkers in the host serum is critical for the development of reliable serological/ assays for differential diagnosis.
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Affiliation(s)
- Nathália Anderson Calomeno
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil
| | - Renato Simões Moreira
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil; Instituto Federal de Santa Catarina (IFSC), Campus Lages, R. Heitor Villa Lobos, 222, São Francisco, Lages, SC, 88506-400, Brazil
| | - Leonardo Antônio Fernandes
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil
| | - Franciane Batista
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil
| | - Júlia Marques
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil
| | - Glauber Wagner
- Laboratório de Bioinformática, Universidade Federal de Santa Catarina, Campus João David Ferreira Lima, Setor F, Bloco A, Sala 318, Caixa postal 476, Trindade, Florianópolis, SC, 88040-970, Brazil
| | - Luiz Claudio Miletti
- Laboratório de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Conta Dinheiro, Lages, SC, 88520-000, Brazil.
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Tavares KCS, Casagrande Dambrós MG, Antunes ASL, Danziato PM, Stoco PH, Schlindwein AD, Moreira RS, Miletti LC. Selenocysteine in Trypanosoma evansi: Identification of the Genes selb, selc, seld, pstk, seltryp and the Selenophosphate Synthetase Protein. ACTA PROTOZOOL 2021. [DOI: 10.4467/16890027ap.21.003.14063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Selenoproteins have been described in all three domains of life and their function has been mainly associated with oxidative stress defense. Canonical elements required for selenoprotein production have been identified in members of the kinetoplastid group supporting the existence of a complete selenocysteine synthesis pathway in these organisms. Currently, nothing is known regarding the selenocysteine pathway in Trypanosoma evansi. In this study, we identified the expression of the elements selB, selC, selD, PSTK and selTRYP at the mRNA level in T. evansi. All translated proteins (selD, PSTK, selTRYP and selB) have the domains predicted and higher identity with Trypanosoma brucei. gambiense. The selenophosphate synthetase protein was localized in the cytoplasm. Our results support the existence of an active selenocysteine pathway in T. evansi.
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Affiliation(s)
- Kaio Cesar Simiano Tavares
- Laboratório de Hemoparasitas e Vetores Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC).; Experimental Biology Center (NUBEX), Universidade de Fortaleza
| | | | | | | | | | | | - Renato Simões Moreira
- Laboratório de Hemoparasitas e Vetores Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC); Instituto Federal de Santa Catarina (IFSC)
| | - Luiz Claudio Miletti
- Laboratório de Hemoparasitas e Vetores Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC)
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21
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Reck C, Menin Á, Batista F, Meira Santos PO, Miletti LC. Evaluation of buffered Trypanosoma evansi antigen and rapid serum agglutination test (BA/Te) for the detection of anti-T. evansi antibodies in horses in Brazil. Current Research in Parasitology & Vector-Borne Diseases 2021; 1:100024. [PMID: 35284895 PMCID: PMC8906065 DOI: 10.1016/j.crpvbd.2021.100024] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/06/2021] [Accepted: 04/13/2021] [Indexed: 12/03/2022]
Abstract
Surra is an infectious disease caused by Trypanosoma evansi, which affects a large number of domestic and wild animal species. Infection control is based on rapid diagnosis followed by treatment of sick animals. This study aimed to evaluate a buffered T. evansi antigen and rapid serum agglutination test (BA/Te) for the detection of anti-T. evansi antibodies in serum samples of horses. For this purpose, 445 serum samples from horses were evaluated and the results compared with the diagnosis by CATT/T. evansi. Our data show a sensitivity of 92%, specificity of 91% and a degree of agreement kappa (κ) of 0.82 (95% CI: 0.771–0.877, P < 0.01) between BA/Te and CATT/T. evansi. Antigen specificity was also evaluated against reactive serum for other infectious agents circulating in equine herds. In conclusion, our findings show that BA/Te has the potential to be a practical and quick screening method for the detection of anti-T. evansi antibodies in horses. New reliable, cheap, fast, and practical serum agglutination test for surra. Specific to Trypanosoma evansi when tested against serum samples from animals positive for other infectious agents in equines. High specificity and sensitivity in agreement with CATT/T. evansi.
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Biezus G, de Cristo TG, da Silva Schade MF, Ferian PE, Carniel F, Miletti LC, Maciel ADR, Casagrande RA. Plasma Cell Pododermatitis Associated With Feline Leukemia Virus (FeLV) and Concomitant Feline Immunodeficiency Virus (FIV) Infection in a Cat. Top Companion Anim Med 2020; 41:100475. [PMID: 32966900 DOI: 10.1016/j.tcam.2020.100475] [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: 12/04/2019] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 11/15/2022]
Abstract
This report aims to describe one case of plasma cell pododermatitis associated with feline leukemia virus (FeLV) and concomitant feline immunodeficiency virus (FIV) infection in a cat. A 2-year-old, intact male, mixed-breed cat was presented with alopecia, skin peeling, and erythematous swelling in the left metacarpal paw pad. Swelling, softening, ulceration with secondary crusts, and erythematous to violaceous discoloration were observed in multiple metacarpal, metatarsal, and digital paw pads. Complete blood count and serum biochemistry were analyzed. FeLV antigenemia and FIV seropositivity were assessed by immunoassay (enzyme-linked immunosorbent assay). Nested-PCR was used to detect FIV and FeLV proviral DNA in blood cells. Histopathological examination and anti-FeLV and anti-FIV immunohistochemical were performed on paw pad biopsies. According to clinical and histopathological findings, a diagnosis of plasma cell pododermatitis was made. The cat was FIV and FeLV seropositive. The immunohistochemical of paw pad biopsies revealed FeLV positivity and FIV negativity. This study provides reference for further investigations about feline plasma cell pododermatitis and highlights retrovirus infection as a potential factor associated with this disease.
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Affiliation(s)
- Giovana Biezus
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Thierry Grima de Cristo
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Michele Ferraz da Silva Schade
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Paulo Eduardo Ferian
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Felipe Carniel
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Aline da Rosa Maciel
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil
| | - Renata Assis Casagrande
- Department of Veterinary Medicine, University of Santa Catarina State, Av. Luís de Camões 2090, Lages, Santa Catarina, Brazil.
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Casa MDS, Vettori JDM, De Souza KM, Miletti LC, Vogel CIG, Lima ALF, Fonteque JH. High prevalence of Anaplasma marginale in the Crioula Lageana cattle. J Infect Dev Ctries 2020; 14:623-630. [PMID: 32683353 DOI: 10.3855/jidc.11691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 05/23/2019] [Accepted: 02/17/2020] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Bovine anaplasmosis is caused by the bacterium Anaplasma marginale; its transmission occurs through vectors such as ticks. Crioula Lageana is a native cattle breed from the South of Brazil used for beef production, with excellent meat quality. There are no studies of the epidemiology of this disease in Crioula Lageana even though tick damage is known to be frequent. METHODOLOGY Blood samples were collected from 311 Crioula Lageana cattle and subjected to DNA extraction and polymerase chain reaction (PCR) using specific primers for the Major Surface Protein 5 (msp5) gene for the detection of the bovine anaplasmosis agent. The animals were classified according to the gender, the category and the presence or absence of ticks at the time of collection. The animal owners completed an epidemiological questionnaire to determine factors that might be associated with anaplasma infection. RESULTS The prevalence of A. marginale was 79.9%. The following factors were found to be protective against infection: I) the breeding objectives (whether animals were destined for beef production and trade or solely for beef production), II) tick control rate; and III) pregnant and lactating cows and calves as the categories least affected by the hemoparasite. The main risk factor for hemoparasite acquisition was the use of organophosphates and avermectins as acaricides. CONCLUSIONS Crioula Lageana cattle are in a situation of enzootic stability, with a high prevalence of A. marginale infection. The factors associated with the infection were: I) breeding objectives, II) tick control rate, III) the acaricides used, and IV) the most tick-parasitized categories of cattle.
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Affiliation(s)
- Mariana da Silva Casa
- Postgraduate Program in Animal Science, Santa Catarina State University, Lages, SC, Brazil.
| | - Julio de M Vettori
- Department of Veterinary Medicine, Santa Catarina State University, Lages, SC, Brazil.
| | - Ketriane M De Souza
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil.
| | - Luiz Claudio Miletti
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil.
| | - Carla Ivane Ganz Vogel
- Postgraduate Program in Biochemistry and Molecular Biology, Santa Catarina State University, Lages, SC, Brazil.
| | - André Luis Ferreira Lima
- Department of Animal Husbandry and Rural Development, Santa Catarina Federal University, Florianópolis, SC, Brazil.
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Canever MF, Miletti LC. Screening and Identification of Pathogen Box® Compounds with anti-Trypanosoma evansi Activity. Acta Trop 2020; 206:105421. [PMID: 32112721 DOI: 10.1016/j.actatropica.2020.105421] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 02/06/2020] [Accepted: 02/24/2020] [Indexed: 11/18/2022]
Abstract
The development of new drugs targeting neglected animal diseases is imperative. In Asia and South America, Trypanosoma evansi is a pathogen that affects horses and other species, causing economic losses associated with reduced animal productivity and death. In order to accelerate the identification of drugs with activity against neglected diseases, Medicines for Malaria Venture has developed Pathogen Box®, a library of 400 different molecules. The present work aimed to identify compounds present in the Pathogen Box® library, measuring in vitro activity against T. evansi. Among the 400 compounds, 5 showed anti-T.evansi activity: pentamidine, MMV688410, MMV687273, MMV022478 and auranofin. Suramin, a trypanocidal activity molecule present on the Pathogen Box® reference compound list, demonstrated no anti-T. evansi activity in the in vitro assays. MMV688410 is the most promising candidate because it induces death and reduces the number of parasites in cell culture, and mainly because its mechanism of action is probably associated with inhibition of trypanosomal reductase enzyme, an exclusive target of trypanosomatides. Further in vitro and in vivo assays are needed to determine the efficacy of the compounds identified in this work, especially by associating tissue distribution and the ability of drugs to cross the blood brain barrier, as T. evansi is able to invade the central nervous system.
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Affiliation(s)
- Mariana Feltrin Canever
- Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Lages, SC 88520-000 Brazil
| | - Luiz Claudio Miletti
- Departamento de Produção Animal e Alimentos, Centro de Ciências Agroveterinárias (CAV), Universidade do Estado de Santa Catarina (UDESC), Av. Luís de Camões, 2090, Lages, SC 88520-000 Brazil.
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25
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Miguel RL, Miletti LC, Silva BFD. Incidence of Chlamydia trachomatis detected by PCR in women’s
endocervical samples in Lages, Santa Catarina, Brazil. Jornal Brasileiro de Patologia e Medicina Laboratorial 2020. [DOI: 10.5935/1676-2444.20200029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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26
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Vieira LL, Canever MF, Cardozo LL, Cardoso CP, Herkenhoff ME, Neto AT, Vogel CIG, Miletti LC. Prevalence of Anaplasma marginale, Babesia bovis, and Babesia bigemina in cattle in the Campos de Lages region, Santa Catarina state, Brazil, estimated by multiplex-PCR. Parasite Epidemiol Control 2019; 6:e00114. [PMID: 31528739 PMCID: PMC6742750 DOI: 10.1016/j.parepi.2019.e00114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 06/10/2019] [Accepted: 07/23/2019] [Indexed: 11/24/2022] Open
Abstract
This study aimed to determine the prevalence of three common hemoparasites (Anaplasma marginale, Babesia bovis and Babesia bigemina) in cattle from 16 counties in the Campos de Lages region, Santa Catarina state, Brazil, and the factors affecting disease occurrence. The study population consisted of 257 clinically healthy animals from 21 rural farms. Bovine blood samples were collected by jugular venipuncture. DNA was extracted from whole blood by the phenol/ chloroform method. Genomic DNA extracted from blood samples was subjected to Multiplex PCR for screening of B. bovis, B. bigemina, and A. marginale using specific primers. Prevalences of A. marginale, B. bigemina, and B. bovis were 27%, 16%, and 29%, respectively. Mixed infection was observed in 17.5% of samples. The most frequent was Babesia bovis and Babesia bigemina in 6.62% of samples. A. marginale infection rates were statistically correlated with age groups of cattle. The infections detected in the study population were considered to be subclinical, based on the presence pathogen DNA and absence of clinical symptoms. Seasonality of the pathogens resulted in various degrees of infection, related to the age of the animals and the season. The Campos de Lages region is characterized by enzootic instability for these pathogens because of its climatic and geographic features.
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Affiliation(s)
- Luisa Lemos Vieira
- Laboratório de Bioquímica de Hemoparasitas e Vetores (LABHEV), Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
| | - Mariana Feltrin Canever
- Laboratório de Bioquímica de Hemoparasitas e Vetores (LABHEV), Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
| | - Leonardo Leite Cardozo
- Setor de Bovinocultura de Leite, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
| | - Cristina Perito Cardoso
- Companhia Integrada de Desenvolvimento Agrícola de Santa Catarina, Rua João José Godinho, s/n° Guadalupe, 88506-080 Lages, SC, Brazil
| | - Marcos Edgar Herkenhoff
- Programa de Pós-graduação em Ciência Animal, Universidade do Estado de Santa Catarina, Brazil
| | - André Thaler Neto
- Setor de Bovinocultura de Leite, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
| | - Carla Ivane Ganz Vogel
- Laboratório de Bioquímica de Hemoparasitas e Vetores (LABHEV), Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
| | - Luiz Claudio Miletti
- Laboratório de Bioquímica de Hemoparasitas e Vetores (LABHEV), Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro, 88520-000 Lages, SC, Brazil
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Fracasso M, Bottari NB, da Silva AD, Grando TH, Pillat MM, Ulrich H, Vidal T, de Andrade CM, Monteiro SG, Nascimento LFN, Miletti LC, Schafer da Silva A. Effects of resveratrol on the differentiation fate of neural progenitor cells of mouse embryos infected with Trypanosoma cruzi. Microb Pathog 2019; 132:156-161. [PMID: 31029718 DOI: 10.1016/j.micpath.2019.04.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 12/31/2022]
Abstract
Chagas disease (CD) affecting about 7 million people is caused by the flagellate protozoan Trypanosoma cruzi. The central nervous system (CNS) is an important site for T. cruzi persistence in the host during the chronic phase of infection, because the protozoan may pass the blood-brain barrier and may cause motor and cognitive neuronal damage. Thinking about avoiding or minimizing these negative effects, it is hypothesized that resveratrol (RSV), a component with several medicinal properties has beneficial effects on the CNS. The objective of this study was to investigate, whether T. cruzi infection interferes with neurogenesis and gliogenesis of embryos of infected mice females, and whether RSV would be able to avoid or minimize these changes caused by CD. RSV is a polyphenol found in grapes and widely studied for its neuroprotective and antioxidant properties. In addition, we investigated the role caused by the parasite during congenital infection and CNS development. Embryos and their brains were PCR-positive for T. cruzi. For this study, NPCs obtained from telencephalon of infected and uninfected embryos and were cultured in presence of resveratrol for forming neurospheres. The results demonstrated that the congenital transmission of T. cruzi influences CNS formation and neural fate, decreasing the number of neuroespheres and causing an elongation in the phases of the cell cycle. In addition, the parasite promoted an increase in neugliogenesis. Resveratrol was neuroprotective and prevented negative effects of the infection. Thus, we suggest the use of resveratrol as a therapeutic target for the treatment of neuroinflammation or as neuroprotective agent during Chagas disease, as it improves gliogenesis and restores neural migration.
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Affiliation(s)
- Mateus Fracasso
- Graduate Program in Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Nathieli B Bottari
- Graduate Program in Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Aniélen D da Silva
- Graduate Program in Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Thirssa H Grando
- Graduate Program in Veterinary Medicine, Department of Parasitology, Microbiology and Immunology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil; Instituto Federal Farroupilha (IFFar), Campus Frederico Westphalen, RS, Brazil
| | - Micheli M Pillat
- Department of Biochemistry, Institute of Chemistry, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Henning Ulrich
- Department of Biochemistry, Institute of Chemistry, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Tais Vidal
- Graduate Program in Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Cinthia M de Andrade
- Graduate Program in Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil; Graduate Program in Veterinary Medicine, Department of Parasitology, Microbiology and Immunology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Silvia G Monteiro
- Graduate Program in Veterinary Medicine, Department of Parasitology, Microbiology and Immunology, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Luiz Flavio N Nascimento
- Graduate Program in Animal Science, Universidade do Estado de Santa Catarina (UDESC), Lages, SC, Brazil
| | - Luiz Claudio Miletti
- Graduate Program in Animal Science, Universidade do Estado de Santa Catarina (UDESC), Lages, SC, Brazil
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Trichez D, Knychala MM, Figueiredo CM, Alves SL, da Silva MA, Miletti LC, de Araujo PS, Stambuk BU. Key amino acid residues of the AGT1 permease required for maltotriose consumption and fermentation by Saccharomyces cerevisiae. J Appl Microbiol 2018; 126:580-594. [PMID: 30466168 DOI: 10.1111/jam.14161] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 07/23/2018] [Revised: 10/22/2018] [Accepted: 11/10/2018] [Indexed: 12/24/2022]
Abstract
AIMS The AGT1 gene encodes for a general α-glucoside-H+ symporter required for efficient maltotriose fermentation by Saccharomyces cerevisiae. In the present study, we analysed the involvement of four charged amino acid residues present in this transporter that are required for maltotriose consumption and fermentation by yeast cells. METHODS AND RESULTS By using a knowledge-driven approach based on charge, conservation, location, three-dimensional (3D) structural modelling and molecular docking analysis, we identified four amino acid residues (Glu-120, Asp-123, Glu-167 and Arg-504) in the AGT1 permease that could mediate substrate binding and translocation. Mutant permeases were generated by site-directed mutagenesis of these charged residues, and expressed in a yeast strain lacking this permease (agt1∆). While mutating the Arg-504 or Glu-120 residues into alanine totally abolished (R504A mutant) or greatly reduced (E120A mutant) maltotriose consumption by yeast cells, as well as impaired the active transport of several other α-glucosides, in the case of the Asp-123 and Glu-167 amino acids, it was necessary to mutate both residues (D123G/E167A mutant) in order to impair maltotriose consumption and fermentation. CONCLUSIONS Based on the results obtained with mutant proteins, molecular docking and the localization of amino acid residues, we propose a transport mechanism for the AGT1 permease. SIGNIFICANCE AND IMPACT OF THE STUDY Our results present new insights into the structural basis for active α-glucoside-H+ symport activity by yeast transporters, providing the molecular bases for improving the catalytic properties of this type of sugar transporters.
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Affiliation(s)
- D Trichez
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.,Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - M M Knychala
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - C M Figueiredo
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.,Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - S L Alves
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - M A da Silva
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - L C Miletti
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - P S de Araujo
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - B U Stambuk
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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Albino Gomes A, Pazinatto Telli E, Miletti LC, Skoronski E, Gomes Ghislandi M, Felippe da Silva G, Borba Magalhães MDL. Improved enzymatic performance of graphene-immobilized β-glucosidase A in the presence of glucose-6-phosphate. Biotechnol Appl Biochem 2017. [DOI: 10.1002/bab.1569] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Anderson Albino Gomes
- Department of Food and Animal Science; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
- Department of Environmental Engineering; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
| | - Elisa Pazinatto Telli
- Department of Food and Animal Science; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
| | - Luiz Claudio Miletti
- Department of Food and Animal Science; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
| | - Everton Skoronski
- Department of Environmental Engineering; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
| | - Marcos Gomes Ghislandi
- Department of Materials Engineering; Academic Unit at Cabo de Santo Agostinho; Rural Federal University of Pernambuco; Cabo de Santo Agostinho Brazil
| | - Gustavo Felippe da Silva
- Department of Forest Engineering; Center of Agroveterinary Sciences; State University of Santa Catarina; Lages Brazil
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Campigotto G, Volpato A, Galli GM, Glombowsky P, Baldissera MD, Miletti LC, Jaguezeski AM, Stefani LM, Da Silva AS. Vertical transmission of Trypanosoma evansi in experimentally infected rats. Exp Parasitol 2017; 174:42-44. [PMID: 28161404 DOI: 10.1016/j.exppara.2017.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 10/07/2016] [Revised: 12/16/2016] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
Abstract
Many reproductive problems has been described in male and female animals infected by Trypanosoma evansi. Thus, the aim of this study was to evaluate the occurrence of vertical (Experiment I) and venereal (Experiment II) transmission of T. evansi in rats experimentally infected. In the experiment I, eight female Wistar rats were used: three animals as negative controls, and five rats were infected by T. evansi on day ten of gestation. Out of these eight females, half puppies were used for molecular analysis (polymerase chain reaction - PCR) for T. evansi. Two infected females showed delivery problems, such as stillbirth, and fetal death that also led to female death. Three female rats infected had normal delivery of stunted offspring at term that died 2 days after birth. Rats from the control group had normal delivery of healthy offspring. T. evansi PCR was positive for 80% (12/15) of pups in the infected group. For the experiment II, five male rats were infected by T. evansi, and monitored by blood smears to check the parasitemia level. When the male rats showed parasitemia between 2 and 5 parasites per field, they were individually housed with one female adult rat. After approximately 21 days, the females delivered their offspring. Blood sample was collected from the females for blood smears and T. evansi PCR tests, which revealed negative results. Therefore, we were able to prove the occurrence of transplacental transmission of T. evansi and its negative effect on female rats and their offspring.
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Affiliation(s)
- Gabriela Campigotto
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil
| | - Andréia Volpato
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil
| | - Gabriela M Galli
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil
| | - Patrícia Glombowsky
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil
| | - Matheus D Baldissera
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, RS, Brazil
| | | | | | - Lenita M Stefani
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil; Graduate Program of Animal Science, UDESC, Chapecó, SC, Brazil
| | - Aleksandro S Da Silva
- Department of Animal Science, Universidade do Estado de Santa Catarina - UDESC, Chapecó, SC, Brazil; Graduate Program of Animal Science, UDESC, Chapecó, SC, Brazil.
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31
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Quadros RMD, Weiss PHE, Marques SMT, Miletti LC. POTENTIAL CROSS-CONTAMINATION OF SIMILAR Giardia duodenalis ASSEMBLAGE IN CHILDREN AND PET DOGS IN SOUTHERN BRAZIL, AS DETERMINED BY PCR-RFLP. Rev Inst Med Trop Sao Paulo 2016; 58:66. [PMID: 27680171 PMCID: PMC5048637 DOI: 10.1590/s1678-9946201658066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 05/10/2016] [Indexed: 11/21/2022] Open
Abstract
Giardia duodenalis is an enteric parasite that has distinct genetic
groups. Human infections are mainly caused by assemblages A and B, although sporadic
infections by assemblages C and D have also been reported. Animals can be infected by
a wide range of assemblages (A to H). The aim of this study is to identify the
assemblages and sub-assemblages of G. duodenalis with zoonotic
features in fecal samples of school-aged children, and in dogs that coexist in the
same households in Lages, Santa Catarina, Brazil. Fecal samples of
91 children and 108 dogs were obtained and G. duodenalis cysts were
detected in samples from 11 (12.08%) children and 10 (9.25%) dogs. DNA extracted from
the 21 positive samples was analyzed by PCR-RFLP, using the gdh
gene. Results showed the presence of sub-assemblages AI (2/11), AII (4/11), BIII
(2/11), and BIV(3/11) among children and AI (5/10) and BIV(3/10) in dogs, with
zoonotic characteristics, and the carnivore specific assemblage C (2/10). G.
duodenalis was found to infect both children and dogs living in the same
household, with the same sub-assemblage (BIV) indicating that pet dogs are a
potential risk of transmission of G. duodenalis to humans.
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Affiliation(s)
- Rosiléia Marinho de Quadros
- Universidade do Planalto Catarinense (UNIPLAC), Faculdade de Ciências Biológicas e Biomedicina. Lages, SC, Brazil
| | - Paulo Henrique Exterchoter Weiss
- Universidade do Estado de Santa Catarina (CAV/UDESC), Laboratório de Bioquímica de Hemoparasitas e Vetores do Centro de Ciências. Lages, SC, Brazil
| | - Sandra Marcia Tietz Marques
- Universidade Federal do Rio Grande do Sul (UFRGS), Departamento de Patologia Clínica Veterinária da Faculdade de Veterinária. Porto Alegre, RS, Brazil
| | - Luiz Claudio Miletti
- Universidade do Estado de Santa Catarina (CAV/UDESC), Laboratório de Bioquímica de Hemoparasitas e Vetores do Centro de Ciências. Lages, SC, Brazil
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Quadros RMD, Weiss PHE, Miletti LC, Moura ABD. OCCURRENCE OF Calodium hepaticum (BANCROFT, 1893) MORAVEC, 1982 EGGS IN FECES OF DOGS AND CATS IN LAGES, SANTA CATARINA, BRAZIL. Rev Inst Med Trop Sao Paulo 2016; 58:6. [PMID: 26910455 PMCID: PMC4793947 DOI: 10.1590/s1678-9946201658006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 04/13/2015] [Indexed: 12/05/2022] Open
Abstract
This study aims to report the incidence of Calodium hepaticum among dogs and cats,
pets or stray animals, captured by the Zoonosis Control Center (CCZ) in Lages, Santa
Catarina, Brazil. Fecal samples from 108 pet dogs and eight pet cats, and from 357
stray dogs and 97 stray cats, captured by CCZ, were analyzed within the period from
July 2010 to November 2012. Coproparasitological exams were performed by techniques
of sedimentation, centrifuge-flotation, and simple flotation. Among 465 fecal samples
from dogs and 105 from cats, the overall spurious infections for C. hepaticum eggs
were 1.05%. For dogs, this positivity was 0.43% and for cats it was 3.81%. The two
positive dogs were stray and out of the four cats, three were stray and one was a
pet. Although the occurrence of C. hepaticum eggs was low, these data reveal the
existence of infected rodents, especially in public places, since, out of the six
infected animals, five (83.33%) were stray. These results are discussed and analyzed
with an emphasis on the risk to public health.
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Affiliation(s)
| | | | - Luiz Claudio Miletti
- Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, SC, Brasil, , , ,
| | - Anderson Barbosa de Moura
- Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, SC, Brasil, , , ,
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Zilli DMW, Lopes RG, Alves SL, Barros LM, Miletti LC, Stambuk BU. Secretion of the acid trehalase encoded by the CgATH1 gene allows trehalose fermentation by Candida glabrata. Microbiol Res 2015; 179:12-9. [PMID: 26411890 DOI: 10.1016/j.micres.2015.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 06/26/2015] [Accepted: 06/27/2015] [Indexed: 01/10/2023]
Abstract
The emergent pathogen Candida glabrata differs from other yeasts because it assimilates only two sugars, glucose and the disaccharide trehalose. Since rapid identification tests are based on the ability of this yeast to rapidly hydrolyze trehalose, in this work a biochemical and molecular characterization of trehalose catabolism by this yeast was performed. Our results show that C. glabrata consumes and ferments trehalose, with parameters similar to those observed during glucose fermentation. The presence of glucose in the medium during exponential growth on trehalose revealed extracellular hydrolysis of the sugar by a cell surface acid trehalase with a pH optimum of 4.4. Approximately ∼30% of the total enzymatic activity is secreted into the medium during growth on trehalose or glycerol. The secreted enzyme shows an apparent molecular mass of 275 kDa in its native form, but denaturant gel electrophoresis revealed a protein with ∼130 kDa, which due to its migration pattern and strong binding to concanavalin A, indicates that it is probably a dimeric glycoprotein. The secreted acid trehalase shows high affinity and activity for trehalose, with Km and Vmax values of 3.4 mM and 80 U (mg protein)(-1), respectively. Cloning of the CgATH1 gene (CAGLOK05137g) from de C. glabrata genome, a gene showing high homology to fungal acid trehalases, allowed trehalose fermentation after heterologous expression in Saccharomyces cerevisiae.
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Affiliation(s)
- D M W Zilli
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil
| | - R G Lopes
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil
| | - S L Alves
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil
| | - L M Barros
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil
| | - L C Miletti
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil
| | - B U Stambuk
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC 88040-900, Brazil.
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Moraes JC, França M, Sartor AA, Bellato V, de Moura AB, Magalhães MDLB, de Souza AP, Miletti LC. Prevalence ofEimeriaspp. in Broilers by Multiplex PCR in the Southern Region of Brazil on Two Hundred and Fifty Farms. Avian Dis 2015; 59:277-81. [DOI: 10.1637/10989-112014-reg] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Canever MF, Vieira LL, Reck C, Richter L, Miletti LC. First evaluation of an outbreak of bovine babesiosis and anaplasmosis in Southern Brazil using multiplex PCR. Korean J Parasitol 2014; 52:507-11. [PMID: 25352699 PMCID: PMC4210733 DOI: 10.3347/kjp.2014.52.5.507] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 08/05/2014] [Accepted: 08/18/2014] [Indexed: 11/23/2022]
Abstract
Outbreaks of tick-borne disease cases in Santa Catarina, Brazil are known, but the presence of the pathogen DNA has never been determined. In this study, the first survey of Anaplasma marginale, Babesia bigemina, and Babesia bovis DNA on blood samples of 33 cattle from an outbreak in Ponte Alta Municipality, Santa Catarina, Brazil, has been carried out. A multiplex PCR detected 54.5% of animals were co-infected with 2 or 3 parasites, while 24.2% were infected with only 1 species. The most prevalent agent was B. bigemina (63.6%) followed by A. marginale (60.6%). This is the first report of tick-borne disease pathogens obtained by DNA analysis in Southern Brazil.
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Affiliation(s)
- Mariana Feltrin Canever
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Brazil
| | - Luisa Lemos Vieira
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Brazil
| | - Carolina Reck
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Brazil
| | - Luisa Richter
- Companhia Integrada de Desenvolvimento Agrícola de Santa Catarina, Brazil
| | - Luiz Claudio Miletti
- Laboratório de Bioquímica de Hemoparasitas e Vetores, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Brazil
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Biffi CP, Stefani LM, Miletti LC, Matiello CA, Backes RG, Almeida JM, Neves GB. Phenotypic and genotypic resistance profile of Salmonella Typhimurium to antimicrobials commonly used in poultry. Rev Bras Cienc Avic 2014. [DOI: 10.1590/1516-635x160293-96] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- CP Biffi
- Universidade do Estado de Santa de Catarina
| | - LM Stefani
- Universidade do Estado de Santa de Catarina; Universidade do Estado de Santa Catarina
| | - LC Miletti
- Universidade do Estado de Santa de Catarina
| | | | - RG Backes
- Universidade do Estado de Santa de Catarina
| | - JM Almeida
- Universidade do Estado de Santa de Catarina
| | - GB Neves
- Universidade do Estado de Santa de Catarina
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Duarte DP, Komati LKO, Simiano Tavares KC, Lazzarotto CR, Ferreira ÉRDA, Bahia D, Miletti LC. Genetic profile of two isolates of Trypanosoma evansi from southern Brazil with different parasitaemias. Biotemas 2014. [DOI: 10.5007/2175-7925.2014v27n3p73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Faccio L, Da Silva AS, Gressler LT, Tonin AA, Lazzarotto CR, Miletti LC, Monteiro SG. Susceptibility of Brazilian isolates of Trypanosoma evansi to suramin sodium: test in experimentally infected mice. Exp Parasitol 2013; 134:309-12. [PMID: 23562880 DOI: 10.1016/j.exppara.2013.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 03/19/2013] [Accepted: 03/24/2013] [Indexed: 11/19/2022]
Abstract
This study aimed to evaluate the susceptibility of Brazilian isolates of Trypanosoma evansi to suramin sodium. For this purpose, three isolates of T. evansi (LPV-2005, LPV-2009 and LPV-2010) and seventy mice were used, with the animals divided in 10 groups (A, B, C, D, E, F, G, H, I and J) with seven animals each group. Mice of groups A, B, and C were infected with LPV-2005; Groups D, E and F with LPV-2009 and the groups G, H and I with LPV-2010. The group J was composed by healthy mice or uninfected. The parasitemia was monitored daily through blood smear, and the treatment of all groups was performed three days post-infection (PI), when all mice showed increased parasitemia. Groups A, D and G represented the positives controls, while groups B, E and H received a single dose of suramin sodium at 10 mgkg(-1) intramuscularly. Groups C, F and I were treated with three doses of suramin sodium at 10 mgkg(-1), respecting an interval of 24 h between each dose. Negative blood smears from all animals were obtained 24 h after treatment (AT), status maintained until the end of the experiment (50 days PI). The specific PCR for T. evansi was carried out from blood, showing negative results AT. Therefore, this study showed that a single dose of suramin sodium at 10 mgkg(-1) has the same efficacy of three doses, as recommended by the therapeutic literature. Furthermore, we observed that Brazilian isolates did not show resistance to the drug.
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Affiliation(s)
- Luciana Faccio
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Brazil.
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Quadros RM, Weiss PHE, Ezequiel GW, Tamanho RB, Lepo G, da Silva MR, da Silva Junior CRJ, de Araujo FAP, Miletti LC. Prevalence of <i>Giardia duodenalis</i> among dogs seized by the Center for Control of Zoonoses (CCZ) of the city of Lages, Santa Catarina, Brazil. Health (London) 2013. [DOI: 10.4236/health.2013.51016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Dalla Rosa L, Da Silva AS, Oliveira CB, Brum I, Benevenutti É, Dorneles F, Jaques JA, Tavares KC, Miletti LC, Leal MR, Monteiro SG. Trypanosoma evansi: Effects of zinc and copper in experimentally infected rats. Exp Parasitol 2012; 131:358-62. [DOI: 10.1016/j.exppara.2012.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 05/02/2012] [Accepted: 05/05/2012] [Indexed: 11/25/2022]
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Nunes JTS, da Silva AS, de Souza Dorneles F, Tonin AA, Lazzarotto C, Miletti LC, Monteiro SG. Occurrence of Trypanosoma evansi in Horses in the State of Minas Gerais, Brazil. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2011.08.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Stoco PH, Aresi C, Lückemeyer DD, Sperandio MM, Sincero TCM, Steindel M, Miletti LC, Grisard EC. Trypanosoma rangeli expresses a β-galactofuranosyl transferase. Exp Parasitol 2011; 130:246-52. [PMID: 22210157 DOI: 10.1016/j.exppara.2011.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 01/23/2023]
Abstract
Glycoconjugates play essential roles in cell recognition, infectivity and survival of protozoan parasites within their insect vectors and mammalian hosts. β-galactofuranose is a component of several glycoconjugates in many organisms, including a variety of trypanosomatids, but is absent in mammalian and African trypanosomes. Herein, we describe the presence of a β(1-3) galactofuranosyl transferase (GALFT), an important enzyme of the galactofuranose biosynthetic pathway, in Trypanosoma rangeli. The T. rangeli GALFT gene (TrGALFT) has an ORF of 1.2 Kb and is organized in two copies in the T. rangeli genome. Antibodies raised against an internal fragment of the transferase demonstrated a 45 kDa protein coded by TrGALFT was localized in the whole cytoplasm, mainly in the Golgi apparatus and equally expressed in epimastigotes and trypomastigotes from T. rangeli. Despite the high sequence similarity with Trypanosoma cruzi and Leishmania spp. orthologous TrGALFT showed a substitution of the metal-binding DXD motif, conserved amongst glycosyltransferases, for a DXE functionally analogous motif. Moreover, a reduced number of GALFT genes were present in T. rangeli when compared with other pathogenic kinetoplastid species.
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Affiliation(s)
- Patrícia Hermes Stoco
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-970, Brazil.
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Tavares KCS, Da Silva AS, Wolkmer P, Monteiro SG, Miletti LC. Cryopreservation of Trypanosoma evansi after DEAE-cellulose purification: Evaluation of infective parameters. Res Vet Sci 2010; 90:257-9. [PMID: 20542526 DOI: 10.1016/j.rvsc.2010.05.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 05/14/2010] [Accepted: 05/17/2010] [Indexed: 11/27/2022]
Abstract
Cryopreservation is a method of keeping parasites alive in a laboratory. However, this technique may also damage the parasite. Alternatively, parasites may be maintained by in vitro culture. Unfortunately, for Trypanosoma evansi no effective medium that is able to maintain the parasite for more than 4 months has been described. In this study, we examined the effect of purifying trypomastigote through DEAE-cellulose chromatography before and after cryopreservation, by analyzing the pre-patent period, longevity, parasitemia, and count of viable parasites. Our results showed a three-times increase in the concentration of viable trypomastigote in DEAE-purified cryopreserved parasites as compared to non-DEAE-purified cryopreserved parasites. This indicates that DEAE-cellulose chromatography followed by cryopreservation is an effective method for the storage and preservation of T. evansi, with the advantage that the stocked parasites will be ready to use in molecular biology procedures.
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Affiliation(s)
- Kaio César Simano Tavares
- Universidade do Estado de Santa Catarina, Laboratório de Bioquímica de Hemoparasitas e Vetores - LABHEV, Avenida Luiz de Camões, n° 2090, Bairro Conta Dinheiro Lages 88520-000, SC, Brazil
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Ramos CJR, Tavares KCS, Komati LKO, Miletti LC. [Colonization by Panstrongylus megistus (Hemiptera, Reduviidae, Triatominae) inside homes in São José do Cerrito, SC: first report]. Rev Soc Bras Med Trop 2009; 41:421-3. [PMID: 18853021 DOI: 10.1590/s0037-86822008000400021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2008] [Accepted: 07/02/2008] [Indexed: 11/22/2022] Open
Abstract
In response to complaints of the presence of triatomines in a fishing hut on the banks of the Caveiras river, in the municipality of São José do Cerrito, State of Santa Catarina, an investigation was conducted in this hut and in other ecotopes neighboring the initial finding. Fifteen specimens of Panstrongylus megistus were found and none of them were infected. The locality of this ecotope is visited occasionally by capybaras, opossums, armadillos and rats.
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de Cássia Campos Bertoncini R, André Herberts R, Goulart Dário M, Roberto Merlin C, Miletti LC. Epidemiological study of Neisseria meningitidis strains isolated from cases of meningococcal disease in Santa Catarina State, Brazil, 1987–2003. Public Health 2007; 121:880-3. [PMID: 17573081 DOI: 10.1016/j.puhe.2007.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Revised: 03/06/2007] [Accepted: 03/28/2007] [Indexed: 11/21/2022]
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Löfgren SE, Miletti LC, Steindel M, Bachère E, Barracco MA. Trypanocidal and leishmanicidal activities of different antimicrobial peptides (AMPs) isolated from aquatic animals. Exp Parasitol 2007; 118:197-202. [PMID: 17888907 DOI: 10.1016/j.exppara.2007.07.011] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 06/13/2007] [Accepted: 07/31/2007] [Indexed: 10/22/2022]
Abstract
Most of the available animal antimicrobial peptides (AMPs) have been tested against bacteria and fungi, but very few against protozoan parasites. In the present study, we investigated the antiparasitic activity of different AMPs isolated from aquatic animals: tachyplesin (Tach, from Tachypleus tridentatus), magainin (Mag, from Xenopus laevis), clavanin (Clav, from Styela clava), penaeidin (Pen, from Litopenaeus vannamei), mytilin (Myt, from Mytilus edulis) and anti-lipopolysaccharide factor (ALF, from Penaeus monodon). The antiparasitic activity was evaluated against the promastigote form of Leishmania braziliensis and epi and trypomastigote forms of Trypanosoma cruzi, through the MTT method. Tach was the most potent peptide, killing completely L. braziliensis and trypomastigote T. cruzi from 12.5microM, whereas Pen and Clav were weakly active against trypomastigotes and Myt against L. braziliensis, only at a high concentration (100microM). Tach and Mag were markedly hemolytic at high concentrations, whereas the other peptides caused only a slight hemolysis (<10% up to 50microM). Our results point to Tach as the only potential candidate for further investigation and potential application as a therapeutic agent.
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Affiliation(s)
- S E Löfgren
- Laboratório de Imunologia Aplicada a Aqüicultura, Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, CP. 476, CEP 88040-900, Florianópolis/SC, Brazil
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Miletti LC, Koerich LB, Pacheco LK, Steindel M, Stambuk BU. Characterization of D-glucose transport in Trypanosoma rangeli. Parasitology 2006; 133:721-7. [PMID: 16899140 DOI: 10.1017/s0031182006000989] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 06/12/2006] [Accepted: 06/12/2003] [Indexed: 11/07/2022]
Abstract
Like in other trypanosomatids D-glucose is a crucial source of energy to Trypanosoma rangeli, a non-pathogenic parasite that in Central and South America infects triatomine vectors and different mammalian species, including humans. In several trypanosome species, D-glucose transporters were already described and cloned. In this study, we characterized the D-glucose transport activity present in 2 life-stage forms of T. rangeli (epimastigotes and trypomastigotes) using D-[U-14C]glucose as substrate. Our results indicate that T. rangeli transports D-glucose with high affinity in both epimastigote (Km 30 microM) and trypomastigotes (Km 80 microM) life-forms. Both transport activities were inhibited by Cytochalasin B and Phloretin, indicating that probably D-glucose uptake in T. rangeli is mediated by facilitated diffusion of the sugar. Significant differences were observed between epimastigotes and trypomastigotes in relation to their affinity for D-glucose analogues, and the predicted amino acid sequence of a putative D-glucose transporter from T. rangeli (TrHT1) showed a larger identity with the T. cruzi D-glucose transporter encoded by the TcrHT1 gene than with other transporters already characterized in trypanosomatids.
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Affiliation(s)
- L C Miletti
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil.
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Abstract
The aim of the present study was to demonstrate the presence of alpha-L-fucosidase in Trypanosoma cruzi. Immunocytochemical and biochemical techniques were used to localize and characterize a membrane-associated, neutral-pH-optimum, alpha-L-fucosidase from the parasite. Light and electron microscopy localized the alpha-L-fucosidase specifically on the surface of the parasite and on membranes in the posterior region of the epimastigote stage. Although much less intense, labeling was also detected on the surface of trypomastigotes. At least 50% of the alpha-L-fucosidase activity was associated with epimastigote membrane solubilized with 1 M NaCl or 1% Triton X-100, suggesting that alpha-L-fucosidase is peripherally associated with membranes. The enzyme from epimastigotes had a neutral pH optimum (near 7) but displayed low specific activity when p-nitrophenyl-alpha-L-fucoside was employed as substrate (0.028 U/mg protein for epimastigotes and 0.015 U/mg protein for tissue culture-derived trypomastigotes). Polyacrylamide gel electrophoresis and Western blotting analysis both showed an expected 50-kDa polypeptide which was immunoreactive with anti-alpha-L-fucosidase antibodies.
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Affiliation(s)
- L C Miletti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
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Affiliation(s)
- Luiz Claudio Miletti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, C.P. 26077, 05599-970 Sao Paulo, Brazil
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Miletti LC, Marino C, Mariño K, de Lederkremer RM, Colli W, Alves MJ. Immobilized 4-aminophenyl 1-thio-beta-D-galactofuranoside as a matrix for affinity purification of an exo-beta-D-galactofuranosidase. Carbohydr Res 1999; 320:176-82. [PMID: 10573856 DOI: 10.1016/s0008-6215(99)00158-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An alternative and fast method for the purification of an exo-beta-D-galactofuranosidase has been developed using a 4-aminophenyl 1-thio-beta-D-galactofuranoside affinity chromatography system and specific elution with 10 mM D-galactono-1,4-lactone in a salt gradient. A concentrated culture medium from Penicillium fellutanum was chromatographed on DEAE-Sepharose CL 6B followed by chromatography on the affinity column, yielding two separate peaks of enzyme activity when elution was performed with 10 mM D-galactono-1,4-lactone in a 100-500 mM NaCl salt gradient. Both peaks behaved as a single 70 kDa protein, as detected by SDS-PAGE. Antibodies elicited against a mixture of the single bands excised from the gel were capable of immunoprecipitating 0.2 units out of 0.26 total units of the enzyme from a crude extract. The glycoprotein nature of the exo-beta-D-galactofuranosidase was ascertained through binding to Concanavalin A-Sepharose as well as by specific reaction with Schiff reagent in Western blots. The purified enzyme has an optimum acidic pH (between 3 and 6), and Km and Vmax values of 0.311 mM and 17 mumol h-1 microgram-1 respectively, when 4-nitrophenyl beta-D-galactofuranoside was employed as the substrate.
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Affiliation(s)
- L C Miletti
- Departamento de Bioquímica, Universidade de São Paulo, Brazil
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