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Pereira JC, Dos Santos Sousa P, De Souza LMB, Pasquali AKS, Bates M, Bates P, Thomaz Soccol V. The efficacy of recombinant protein lbk39 for the diagnosis of leishmaniosis in dogs. Parasitology 2021; 148:302-310. [PMID: 33070782 PMCID: PMC11010170 DOI: 10.1017/s0031182020001997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/05/2020] [Revised: 09/21/2020] [Accepted: 10/12/2020] [Indexed: 11/06/2022]
Abstract
Visceral leishmaniosis is one of the most important zoonotic diseases on the planet and dogs are the main reservoir of canine visceral leishmaniosis (CVL) in endemic areas. They play an important role in human infection because in dogs the disease appears long time after infection, and they can move uncontrollably, contributing to disperse the parasite. To take the decision to treat the animals or for euthanasia, in an elimination programme, in order to reduce the parasitic load, it is necessary to diagnose correctly, having more effective tools. Our group has developed a new recombinant antigen-based kinesin-related gene of Leishmania braziliensis (Lbk39), which shows 59% amino acid identity to the L. infantum homologue. The Lbk39 gene was synthesized, inserted into the pLEXSY-sat2 vector and transfected into L. tarentolae cells by electroporation. The recombinant protein was secreted in the culture with a C-terminal histidine marker, purified, generating a product at 337.68 μg mL-1. A total of 152 sera from dog's endemic and non-endemic areas were used, being 78 positives and 75 negatives. The antigen Lbk39 showed 100% sensitivity and 96.1% specificity. We compared this antigen with other antigens such as total extract of the parasite, TRDPP, and our data indicate that Lbk39 has potential application in the diagnosis of CVL through antibody detection.
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Affiliation(s)
- Joyce Carvalho Pereira
- Federal University of Paraná, Post-graduate Course in Bioprocess Engineering and Biotechnology, Polytechnic Centre, Jardim das Américas, CEP 81530-980, Curitiba, Paraná, Brazil
| | - Pedro Dos Santos Sousa
- Federal University of Paraná, Post-graduate Course in Bioprocess Engineering and Biotechnology, Polytechnic Centre, Jardim das Américas, CEP 81530-980, Curitiba, Paraná, Brazil
| | - Ligia Moraes Barizon De Souza
- Federal University of Paraná, Post-graduate Course in Bioprocess Engineering and Biotechnology, Polytechnic Centre, Jardim das Américas, CEP 81530-980, Curitiba, Paraná, Brazil
| | - Aline Kuhn Sbruzzi Pasquali
- Federal University of Paraná, Post-graduate Course in Bioprocess Engineering and Biotechnology, Polytechnic Centre, Jardim das Américas, CEP 81530-980, Curitiba, Paraná, Brazil
| | - Michelle Bates
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Paul Bates
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Vanete Thomaz Soccol
- Federal University of Paraná, Post-graduate Course in Bioprocess Engineering and Biotechnology, Polytechnic Centre, Jardim das Américas, CEP 81530-980, Curitiba, Paraná, Brazil
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Oliveira Dos Santos Maciel M, Soares MF, Costa SF, Bragato JP, Rebech GT, de Freitas JH, Alves GB, de Oliveira TCB, Bresciani KDS, de Lima VMF. Plasmonic rK28 ELISA improves the diagnosis of canine Leishmania infection. Parasite Immunol 2019; 42:e12684. [PMID: 31729767 DOI: 10.1111/pim.12684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 08/15/2019] [Revised: 11/07/2019] [Accepted: 11/12/2019] [Indexed: 01/21/2023]
Abstract
In this study, we evaluated the performance of a new enzyme-linked immunosorbent assay (ELISA) variant known as indirect "plasmonic ELISA" (pELISA) for the detection of Leishmania spp. infection. Serum samples from 170 dogs from an area where canine leishmaniosis (CanL) is endemic and from 26 healthy dogs from a nonendemic area were tested by indirect pELISA, and the results were compared to those of an indirect ELISA (both with recombinant antigen rK28) and those of an immunochromatographic test (dual-path platform, TR-DPP®) using real-time PCR on blood samples or conjunctival swabs as the gold standard. The pELISA, indirect rK28 ELISA and the TR-DPP® immunochromatographic test presented sensitivities of 94.7%, 89.5% and 79.0% and specificities of 100%, 92.7% and 91.5%, respectively. The analysis of the results revealed that the specificity of the indirect pELISA was greater than that of the method recommended by the Ministry of Health in Brazil and may increase the feasibility of diagnosis in resource-constrained countries because it does not require sophisticated instruments to read. Thus, this method can be used as an additional tool for the detection of Leishmania spp. infection in these areas.
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Affiliation(s)
| | | | - Sidnei Ferro Costa
- School of Veterinary Medicine, São Paulo State University (UNESP), Araçatuba, Brazil
| | | | | | | | | | | | - Katia Denise Saraiva Bresciani
- Department of Support, Production and Animal Health, School of Veterinary Medicine, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Valéria Marçal Felix de Lima
- Department of Clinics, Surgery and Animal Reproduction, School of Veterinary Medicine, São Paulo State University (UNESP), Araçatuba, Brazil
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Blume GR, Eloi RSA, Silva FP, Eckstein C, Santos RL, Sant'Ana FJF. Oral Lesions in Dogs with Visceral Leishmaniosis. J Comp Pathol 2019; 171:6-11. [PMID: 31540627 DOI: 10.1016/j.jcpa.2019.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 03/14/2019] [Revised: 06/10/2019] [Accepted: 06/25/2019] [Indexed: 02/06/2023]
Abstract
Canine visceral leishmaniosis (CVL) is an important zoonotic disease, which is endemic in Brazil and several other parts of the world. The disease may affect multiple organs, but lesions in the oral cavity are considered uncommon. Twenty-three cases of oral lesions compatible with CVL were diagnosed from 2015 to 2018 in the Federal District, Brazil. Six cases were confirmed to be CVL based on histopathology, immunohistochemistry and polymerase chain reaction amplification of Leishmania infantum kDNA. Most of the affected dogs were >9 years of age, of mixed breed and were classified as having stage C of the disease. The most important gross findings were ulcerated nodular lesions in the tongue, lip, gingiva and hard palate. Microscopically, there was lymphoplasmacytic to granulomatous inflammation that was diffuse, moderate to severe and associated with ulceration. CVL should be considered in the differential diagnosis of nodular and ulcerative oral lesions in dogs.
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Affiliation(s)
- G R Blume
- Laboratório de Diagnóstico Patológico Veterinário, Universidade de Brasília, Granja do Torto, Brazil
| | - R S A Eloi
- Laboratório Histopato-Análise Anatomopatológica Veterinária, Brazil
| | | | - C Eckstein
- Departmento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - R L Santos
- Departmento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - F J F Sant'Ana
- Laboratório de Diagnóstico Patológico Veterinário, Universidade de Brasília, Granja do Torto, Brazil.
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Silva JL, Oliveira VVG, Silva LAMT, E Silva RP, Alves LC, Cavalcanti MP, Júnior VAS. Evaluation of Serum Biochemical Parameters, Structural Changes, Immunohistochemistry and Parasite Load in the Urinary System of Dogs Infected Naturally by Leishmania infantum. J Comp Pathol 2019; 167:26-31. [PMID: 30898294 DOI: 10.1016/j.jcpa.2018.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 07/19/2018] [Revised: 11/16/2018] [Accepted: 11/26/2018] [Indexed: 11/30/2022]
Abstract
The aim of this study was to evaluate the histopathological changes in the urinary system and their correlation with serum biochemical parameters, parasite load and immunodetection of amastigotes in 30 dogs infected naturally by Leishmania infantum. The major histological changes were glomerulonephritis and interstitial nephritis. Serum biochemistry demonstrated that the dogs had progressive loss of renal function. L. infantum amastigotes were detected immunohistochemically in all parts of the urinary system, except the ureters. There was a correlation between parasite load, severity of histopathological changes and immunodetection of the parasites, but parasite load was not correlated with the serum biochemical parameters evaluated.
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Affiliation(s)
- J L Silva
- Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, Recife
| | - V V G Oliveira
- Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Rua Alto do Reservatório s/n, Bela Vista, Vitória de Santo Antão.
| | - L A M T Silva
- Fundação Oswaldo Cruz (Fiocruz) - Pernambuco, Centro de Pesquisas Aggeu Magalhães, Campus da Universidade Federal de Pernambuco, Cidade Universitária, Av. Moraes Rego, s/n, Recife
| | - R P E Silva
- Fundação Oswaldo Cruz (Fiocruz) - Pernambuco, Centro de Pesquisas Aggeu Magalhães, Campus da Universidade Federal de Pernambuco, Cidade Universitária, Av. Moraes Rego, s/n, Recife
| | - L C Alves
- Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, Recife, Brazil
| | - M P Cavalcanti
- Fundação Oswaldo Cruz (Fiocruz) - Pernambuco, Centro de Pesquisas Aggeu Magalhães, Campus da Universidade Federal de Pernambuco, Cidade Universitária, Av. Moraes Rego, s/n, Recife
| | - V A Silva Júnior
- Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, Recife, Brazil.
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