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Manful EE, Dofuor AK, Gwira TM. The role of tryptophan derivatives as anti-kinetoplastid agents. Heliyon 2024; 10:e23895. [PMID: 38187297 PMCID: PMC10770616 DOI: 10.1016/j.heliyon.2023.e23895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 01/09/2024] Open
Abstract
Kinetoplastids are the causative agents for a spectrum of vector-borne diseases including Leishmaniasis, Chagas disease and Trypanosomiasis that affect millions of people worldwide. In the absence of safe and effective vaccines, chemotherapy, in conjunction with vector control, remain the most significant control approach for kinetoplastid diseases. However, commercially available treatment for these neglected tropical diseases frequently ends up with toxic side effects and increasing resistance. To meet the rising need for innovative medications, alternative chemotherapeutic agents are required. Moreover, insights into target-based mode of action of chemotherapeutic agents are required if novel drugs that may outwit resistance to commercially available drugs are to be developed. Tryptophan has been implicated in a variety of diseases and disorders due to its fundamental role as a precursor to several bioactive metabolites, as well as its importance in the improvement of health and nutrition, diagnostics, and therapeutics. The regulation of tryptophan metabolism plays a fundamental role in the growth of kinetoplastids. Moreover, the levels of tryptophan may serve as a biomarker to distinguish between the stages of kinetoplastids making it an important amino acid to explore for drug targets. The main aim of this review is thus to provide a comprehensive literature synthesis of tryptophan derivatives to explore as potential anti-kinetoplastids. Here we highlight the role of tryptophan derivatives as chemotherapeutic agents against kinetoplastids. The reviewed compounds provide insights into potential new drug interventions that may combat the increasing problem of anti-kinetoplastid resistance.
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Affiliation(s)
- Ewura-Esi Manful
- Division of Molecular Biology and Human Genetics, Stellenbosch University, South Africa
| | - Aboagye Kwarteng Dofuor
- Department of Biological Sciences, University of Environment and Sustainable Development, Somanya, Ghana
| | - Theresa Manful Gwira
- West African Center for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Ghana
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Legon, Ghana
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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] [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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3
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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] [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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Coelho RA, Alves GM, Figueiredo-Carvalho MHG, Almeida-Silva F, de Souza GR, Lourenço MCDS, Brito-Santos F, Amaral ACF, Almeida-Paes R. New possibilities for chromoblastomycosis and phaeohyphomycosis treatment: identification of two compounds from the MMV Pathogen Box® that present synergism with itraconazole. Mem Inst Oswaldo Cruz 2022; 117:e220089. [PMID: 36102413 PMCID: PMC9467274 DOI: 10.1590/0074-02760220089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/23/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Black fungi of the Herpotrichiellaceae family are agents of chromoblastomycosis and phaeohyphomycosis. There are few therapeutic options for these infections and it is common to associate antifungal drugs in their treatment. OBJECTIVES To investigate the Medicines for Malaria Venture (MMV) Pathogen Box® for possible compounds presenting synergism with antifungal drugs used to treat black fungal infections. METHODS An initial screening of the Pathogen Box® compounds was performed in combination with itraconazole or terbinafine at sub-inhibitory concentrations against Fonsecaea pedrosoi. Hits were further tested against eight Herpotrichiellaceae using the checkerboard method. FINDINGS No synergism was observed with terbinafine. MMV687273 (SQ109) and MMV688415 showed synergism with itraconazole against F. pedrosoi. Synergism of these compounds was confirmed with some black fungi by the checkerboard method. SQ109 and itraconazole presented synergism for Exophiala dermatitidis, F. pedrosoi, F. monophora and F. nubica, with fungicidal activity for F. pedrosoi and F. monophora. MMV688415 presented synergism with itraconazole only for F. pedrosoi, with fungicidal activity. The synergic compounds had high selectivity index values when combined with itraconazole. MAIN CONCLUSIONS These compounds in combination, particularly SQ109, are promising candidates to treat Fonsecaea spp. and E. dermatitidis infections, which account for most cases of chromoblastomycosis and phaeohyphomycosis.
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Affiliation(s)
- Rowena Alves Coelho
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Micologia, Rio de Janeiro, RJ, Brasil
| | - Gabriela Machado Alves
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Micologia, Rio de Janeiro, RJ, Brasil
| | | | - Fernando Almeida-Silva
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Micologia, Rio de Janeiro, RJ, Brasil
| | - Gabriela Rodrigues de Souza
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Plataforma de Bioensaios RPT 11B, Rio de Janeiro, RJ, Brasil
| | - Maria Cristina da Silva Lourenço
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Plataforma de Bioensaios RPT 11B, Rio de Janeiro, RJ, Brasil
| | | | - Ana Claudia Fernandes Amaral
- Fundação Oswaldo Cruz-Fiocruz, Farmanguinhos, Laboratório de Produtos Naturais e Derivados, Rio de Janeiro, RJ, Brasil
| | - Rodrigo Almeida-Paes
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Micologia, Rio de Janeiro, RJ, Brasil
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López-Arencibia A, Sifaoui I, Reyes-Batlle M, Bethencourt-Estrella CJ, San Nicolás-Hernández D, Lorenzo-Morales J, Piñero JE. Discovery of New Chemical Tools against Leishmania amazonensis via the MMV Pathogen Box. Pharmaceuticals (Basel) 2021; 14:1219. [PMID: 34959620 PMCID: PMC8708704 DOI: 10.3390/ph14121219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/12/2021] [Accepted: 11/22/2021] [Indexed: 01/04/2023] Open
Abstract
The protozoan parasite Leishmania causes a spectrum of diseases and there are over 1 million infections each year. Current treatments are toxic, expensive, and difficult to administer, and resistance to them is emerging. In this study, we screened the antileishmanial activity of the Pathogen Box compounds from the Medicine for Malaria Venture against Leishmania amazonensis, and compared their structures and cytotoxicity. The compounds MMV676388 (3), MMV690103 (5), MMV022029 (7), MMV022478 (9) and MMV021013 (10) exerted a significant dose-dependent inhibition effect on the proliferation of L. amazonensis promastigotes and intracellular amastigotes. Moreover, studies on the mechanism of cell death showed that compounds 3 and 5 induced an apoptotic process while the compounds 7, 9 and 10 seem to induce an autophagic mechanism. The present findings underline the potential of these five molecules as novel therapeutic leishmanicidal agents.
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Affiliation(s)
- Atteneri López-Arencibia
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Departamento de Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - Ines Sifaoui
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - María Reyes-Batlle
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Departamento de Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - Carlos J. Bethencourt-Estrella
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - Desirée San Nicolás-Hernández
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - Jacob Lorenzo-Morales
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Departamento de Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
| | - José E. Piñero
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Campus de Anchieta, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain; (I.S.); (M.R.-B.); (C.J.B.-E.); (D.S.N.-H.); (J.E.P.)
- Departamento de Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), 28006 Madrid, Spain
- Consorcio Centro de Investigacion Biomedica en Red M.P. (CIBER) de Enfermedades Infecciosas, Instituto de Salud Carlos III, 28006 Madrid, Spain
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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] [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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