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de Pinho FA, Mendes MO, de Magalhães VLP, Tinôco AAC, Seoane JHL, Rêgo FD, Soares RP, Barrouin-Melo SM. Retraction notice to "Clinical evolution of equine leishmaniasis with self-limiting cutaneous disease caused by Leishmania infantum in northeastern Brazil: A case report" [VPRSR 41 volume (2023) 100881]. Vet Parasitol Reg Stud Reports 2024; 50:101009. [PMID: 38644037 DOI: 10.1016/j.vprsr.2024.101009] [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] [Indexed: 04/23/2024]
Affiliation(s)
- Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil
| | - Mariana Oliveira Mendes
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil
| | - Vitor Luiz Pereira de Magalhães
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil
| | | | | | - Felipe Dutra Rêgo
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Av. Augusto de Lima, 1715, Barro Preto, Belo Horizonte CEP: 30190-009, MG, Brazil
| | - Rodrigo Pedro Soares
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Av. Augusto de Lima, 1715, Barro Preto, Belo Horizonte CEP: 30190-009, MG, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110 Salvador, BA, Brazil
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Rêgo FD, da Silva ES, Lopes VV, Teixeira-Neto RG, Belo VS, Fonseca AA, Pereira DA, Pena HP, Laurenti MD, Araújo GV, da Matta VLR, Chouman IH, Burrin TB, Sandoval CM, Barrouin-Melo SM, de Pinho FA, de Andrade HM, Nunes RV, Gontijo CMF, Soccol VT, Klocek D, Grybchuk D, Macedo DH, do Monte-Neto RL, Yurchenko V, Soares RP. First report of putative Leishmania RNA virus 2 (LRV2) in Leishmania infantum strains from canine and human visceral leishmaniasis cases in the southeast of Brazil. Mem Inst Oswaldo Cruz 2023; 118:e230071. [PMID: 37729273 PMCID: PMC10511063 DOI: 10.1590/0074-02760230071] [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: 04/17/2023] [Accepted: 07/31/2023] [Indexed: 09/22/2023] Open
Abstract
BACKGROUND Leishmania RNA virus 1 (LRV1) is commonly found in South American Leishmania parasites belonging to the subgenus Viannia, whereas Leishmania RNA virus 2 (LRV2) was previously thought to be restricted to the Old-World pathogens of the subgenus Leishmania. OBJECTIVES In this study, we investigated the presence of LRV2 in strains of Leishmania (L.) infantum, the causative agent of visceral leishmaniasis (VL), originating from different hosts, clinical forms, and geographical regions. METHODS A total of seventy-one isolates were screened for LRV2 using semi-nested reverse transcription-polymerase chain reaction (RT-PCR) targeting the RNA-dependent RNA polymerase (RdRp) gene. FINDINGS We detected LRV2 in two L. infantum isolates (CUR268 and HP-EMO) from canine and human cases, respectively. MAIN CONCLUSIONS To the best of our knowledge, this is the first detection of LRV2 in the New World.
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Affiliation(s)
- Felipe Dutra Rêgo
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Pesquisa em Biotecnologia Aplicada ao Estudo de Patógenos, Belo Horizonte, MG, Brasil
| | - Eduardo Sérgio da Silva
- Universidade Federal de São João Del Rei, Laboratório de Doenças Parasitárias e Infecciosas, Divinópolis, MG, Brasil
| | - Valeriana Valadares Lopes
- Universidade Federal de São João Del Rei, Laboratório de Doenças Parasitárias e Infecciosas, Divinópolis, MG, Brasil
| | | | - Vinícius Silva Belo
- Universidade Federal de São João Del Rei, Laboratório de Doenças Parasitárias e Infecciosas, Divinópolis, MG, Brasil
| | - Antônio Augusto Fonseca
- Ministério da Agricultura, Pecuária e Abastecimento, Laboratório Nacional Agropecuária, Pedro Leopoldo, MG, Brasil
| | - Diego Andrade Pereira
- Universidade Federal de São João Del Rei, Laboratório de Doenças Parasitárias e Infecciosas, Divinópolis, MG, Brasil
| | - Heber Paulino Pena
- Universidade Federal de São João Del Rei, Laboratório de Doenças Parasitárias e Infecciosas, Divinópolis, MG, Brasil
| | - Márcia Dalastra Laurenti
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Gabriela V Araújo
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Vânia Lúcia Ribeiro da Matta
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Islam Hussein Chouman
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Thainá Bergantin Burrin
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Carmen M Sandoval
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Patologia, Laboratório de Patologia de Moléstias Infecciosas, São Paulo, SP, Brasil
| | - Stella Maria Barrouin-Melo
- Universidade Federal da Bahia, Departamento de Anatomia, Patologia e Clínicas Veterinárias, Escola de Medicina Veterinária, Laboratório de Infectologia Veterinária, Salvador, BA, Brasil
| | - Flaviane Alves de Pinho
- Universidade Federal da Bahia, Departamento de Anatomia, Patologia e Clínicas Veterinárias, Escola de Medicina Veterinária, Laboratório de Infectologia Veterinária, Salvador, BA, Brasil
| | - Hélida Monteiro de Andrade
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Parasitologia, Laboratório de Leishmanioses, Belo Horizonte, MG, Brasil
| | - Ramon Vieira Nunes
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Departamento de Parasitologia, Laboratório de Leishmanioses, Belo Horizonte, MG, Brasil
| | - Célia Maria Ferreira Gontijo
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Pesquisa em Biotecnologia Aplicada ao Estudo de Patógenos, Belo Horizonte, MG, Brasil
| | - Vanete Thomaz Soccol
- Universidade Federal do Paraná, Departamento de Engenharia de Bioprocessos e Biotecnologia, Curitiba, PR, Brasil
| | - Donnamae Klocek
- University of Ostrava, Faculty of Science, Life Science Research Centre, Ostrava, Czech Republic
| | - Danyil Grybchuk
- University of Ostrava, Faculty of Science, Life Science Research Centre, Ostrava, Czech Republic
| | - Diego Henrique Macedo
- University of Ostrava, Faculty of Science, Life Science Research Centre, Ostrava, Czech Republic
| | - Rubens Lima do Monte-Neto
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Pesquisa em Biotecnologia Aplicada ao Estudo de Patógenos, Belo Horizonte, MG, Brasil
| | - Vyacheslav Yurchenko
- University of Ostrava, Faculty of Science, Life Science Research Centre, Ostrava, Czech Republic
| | - Rodrigo Pedro Soares
- Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Pesquisa em Biotecnologia Aplicada ao Estudo de Patógenos, Belo Horizonte, MG, Brasil
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Diniz-Gonçalves GS, Hielm-Björkman A, da Silva VB, Ribeiro LGR, da Costa Vieira-Filho CH, Silva LP, Barrouin-Melo SM, Cassali GD, Damasceno KA, Estrela-Lima A. GATA-3 expression and its correlation with prognostic factors and survival in canine mammary tumors. Front Vet Sci 2023; 10:1179808. [PMID: 37483298 PMCID: PMC10356988 DOI: 10.3389/fvets.2023.1179808] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/19/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction The transcription factor GATA-3 plays a significant role in mammary gland development and differentiation. Recent studies on human oncology have demonstrated its association with favorable pathologic factors in breast cancer. Canine mammary tumours, proposed as comparative and translational study models, have epidemiological, clinical, biological, and genetic characteristics similar to those of human breast cancers. Methods Here, we evaluated the frequency of GATA-3 expression in mammary tumors of dogs and its relationship with prognostic factors and survival. Tumor samples were obtained from 40 female dogs and grouped according to histological type into benign tumors (n = 10), carcinoma in mixed tumors (CMTs) (n = 20), and aggressive tumors (n = 10). CMTs were further separated according to histological grade, and data on clinical staging and diagnosis, histopathological grading, and survival rate were collected. Results GATA-3 and estrogen receptor (ER) expression were higher in benign and well-differentiated carcinomas than in aggressive tumors, which showed greater Ki-67 expression. The expression rate of ER in the studied groups was equivalent to that of GATA-3. We identified a strong positive correlation between GATA-3 and ER expression frequencies and a negative correlation between those of GATA-3 and Ki-67. There were associations between GATA-3 (p < 0.001), Ki-67 (p = 0.003), tumor size (p < 0.001), clinical stage (p = 0.002), lymph node metastasis (p < 0.001), and histological grade (p < 0.001) by univariate survival analysis. The parameters ER (p = 0.015) and GATA-3 (p = 0.005) also influenced survival in a multifactorial manner. Discussion Kaplan-Meier analysis of survival curves validated our previous findings that dogs with GATA-3 expression in ≥79.4% of cells had significantly higher survival rates (p < 0.001). The performance analysis showed that the expression of GATA-3 in ≥79.4% of cells effectively predicted survival or death in dogs with mammary tumors. Collectively, these results suggest that GATA-3 can be a relevant marker in the study of mammary tumor progression and has potential as a prognosis marker for predicting outcomes in canine mammary tumors.
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Affiliation(s)
| | - Anna Hielm-Björkman
- DogRisk Research Group, Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Vanessa Bonfim da Silva
- Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Brazil
| | - Lorena Gabriela Rocha Ribeiro
- Laboratory of Animal Pathology, Department of Veterinary Medicine, Federal University of Sergipe, São Cristóvão, Brazil
| | | | - Laís Pereira Silva
- Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Brazil
| | - Stella Maria Barrouin-Melo
- DogRisk Research Group, Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Geovanni Dantas Cassali
- Laboratory of Comparative Pathology, Department of General Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Karine Araújo Damasceno
- Experimental Pathology Laboratory (LAPEX), Gonçalo Moniz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Brazil
| | - Alessandra Estrela-Lima
- Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Brazil
- DogRisk Research Group, Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
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de Pinho FA, Mendes MO, de Magalhães VLP, Tinôco AAC, Seoane JHL, Rêgo FD, Soares RP, Barrouin-Melo SM. Clinical evolution of equine leishmaniasis with self-limiting cutaneous disease caused by Leishmania infantum in northeastern Brazil: A case report. Vet Parasitol Reg Stud Reports 2023; 41:100881. [PMID: 37208087 DOI: 10.1016/j.vprsr.2023.100881] [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: 11/25/2022] [Revised: 04/10/2023] [Accepted: 04/19/2023] [Indexed: 05/21/2023]
Abstract
Leishmania infantum infections have long been described in humans and dogs worldwide, but characterization of equine cases remains scarce. We describe the clinical evolution of a natural L. infantum infection to contribute to the diagnostic knowledge and epidemiology of equine leishmaniasis (EL). An auction-acquired four-year-old Mangalarga Marchador mare from Pernambuco state, presented a few subcutaneous nodules on the head and neck upon arrival at the purchaser's stud at Bahia state, in November of 2019. They progressed to multiple ulcerated and non-ulcerated nodules and spread to both right limbs in seven weeks. Hematology revealed anemia, lymphocytosis, monocytosis, and elevated plasma fibrinogen. Histopathology of the biopsied nodules identified a granulomatous dermatitis with macrophages containing Leishmania amastigotes. PCR detected Leishmania in skin lesions, but not in blood or spleen aspirate samples; ITS1 PCR-RFLP and DNA sequencing confirmed L. infantum species. A topical antiseptic and insect-repellent therapy and a monthly follow-up were established. All lesions improved progressively, without specific anti-Leishmania treatment, and 14 months later there was a consistent resolution. This first description of EL by L. infantum in an endemic area is relevant to emphasize the need for epidemiological studies, and to enhance clinicians' awareness for differential diagnosis.
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Affiliation(s)
- Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil
| | - Mariana Oliveira Mendes
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil
| | - Vitor Luiz Pereira de Magalhães
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil
| | | | | | - Felipe Dutra Rêgo
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Av. Augusto de Lima, 1715 - Barro Preto, Belo Horizonte, CEP: 30190-009, MG, Brazil
| | - Rodrigo Pedro Soares
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Av. Augusto de Lima, 1715 - Barro Preto, Belo Horizonte, CEP: 30190-009, MG, Brazil.
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Av. Milton Santos 500, CEP: 40170-110, Salvador, BA, Brazil.
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Hemida MBM, Salin S, Vuori KA, Moore R, Anturaniemi J, Rosendahl S, Barrouin-Melo SM, Hielm-Björkman A. Response to letter regarding "Puppyhood diet as a factor in the development of owner-reported allergy/atopy skin signs in adult dogs in Finland". J Vet Intern Med 2022; 36:1564-1565. [PMID: 35864786 PMCID: PMC9511083 DOI: 10.1111/jvim.16489] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 07/08/2022] [Indexed: 11/26/2022] Open
Affiliation(s)
- Manal B M Hemida
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Siru Salin
- Department of Agricultural Sciences, Faculty of Agriculture Forestry, University of Helsinki, Helsinki, Finland
| | - Kristiina A Vuori
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Robin Moore
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Anturaniemi
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Sarah Rosendahl
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Stella Maria Barrouin-Melo
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Anna Hielm-Björkman
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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Dos Santos NS, de Pinho FA, Hlavac NRC, Nunes TL, Almeida NR, Solcà MS, Varjão BM, Portela RW, Rugani JN, Rêgo FD, Barrouin-Melo SM, Soares RP. Feline Leishmaniasis Caused by Leishmania infantum: Parasite Sequencing, Seropositivity, and Clinical Characterization in an Endemic Area From Brazil. Front Vet Sci 2021; 8:734916. [PMID: 34513979 PMCID: PMC8424124 DOI: 10.3389/fvets.2021.734916] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/02/2021] [Indexed: 11/13/2022] Open
Abstract
Zoonotic leishmaniasis caused by Leishmania infantum is a disease of One Health concern since human and animal cases and environmental damage are interconnected. L. infantum has a complex epidemiological cycle with multiple hosts, including mammals-humans, domestic, and wild animals-and arthropod vectors. Knowledge on mammal infections in endemic areas is crucial for developing control strategies. This work aimed to detect and characterize L. infantum infection in domestic cats from areas where human and canine leishmaniasis cases occur. No cases of feline leishmaniasis (FeL) had been previously reported in those areas. Five municipalities from Bahia state were chosen, comprising 2,480.8 km2 with 1,103,866 inhabitants. Ninety domiciliated and/or sheltered cats underwent clinical examination and serology by a rapid reference test recommended by the Brazilian government. Cytology, PCR, and parasite DNA sequencing were performed in bone marrow samples. Rapid tests detected antibodies in 5.6% (5/90) of the cats. Leishmania infantum infection was confirmed in 7.8% (7/90) of the cats by PCR, sequencing, and parasite isolation. Three out of the five municipalities (60%) had infected cats, and PCR positivity varied from 6.9 to 29%. One cat was categorized as harboring active L. infantum infection with amastigote forms in bone marrow smears. No clinical signs were detected at the first clinical exam, but 1 month later the cat developed severe FeL. The cat isolate was grown in culture, typed and its DNA sequence was homologous to the L. infantum reference strain (PP75). In conclusion, cats are potential hosts and may acquire L. infantum in endemic areas where canine and human cases occur. For cats, the need for surveillance, differential diagnosis and clinical care is highly recommended since a fast clinical progression of FeL developed in a subclinical animal. An accurate standardized immunodiagnostic assay for FeL is warranted.
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Affiliation(s)
- Nara Santos Dos Santos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Brazil
| | - Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Brazil.,Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Nicole Regina Capacchi Hlavac
- Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Talyta Lins Nunes
- Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Nádia Rossi Almeida
- Department of Veterinary Preventive Medicine and Animal Production of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Manuela Silva Solcà
- Department of Veterinary Preventive Medicine and Animal Production of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Bruno Milen Varjão
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Brazil
| | - Ricardo Wagner Portela
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, BA, Brazil
| | | | - Felipe Dutra Rêgo
- Instituto Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Brazil.,Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
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Hemida MBM, Salin S, Vuori KA, Moore R, Anturaniemi J, Rosendahl S, Barrouin-Melo SM, Hielm-Björkman A. Puppyhood diet as a factor in the development of owner-reported allergy/atopy skin signs in adult dogs in Finland. J Vet Intern Med 2021; 35:2374-2383. [PMID: 34258795 PMCID: PMC8478020 DOI: 10.1111/jvim.16211] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The increased prevalence of atopic dermatitis (AD) in dogs necessitates research in its disease etiology. OBJECTIVES To explore the association between puppyhood dietary exposures and prevalence of owner-reported allergy/atopy skin signs (AASS) after the age of 1 year. ANIMALS Four thousand and twenty-two dogs were eligible, 1158 cases, and 2864 controls. METHODS This cross-sectional hypothesis-driven observational study was extracted from the DogRisk food frequency questionnaire. Forty-six food items and the ratio of 4 major diet types were tested for their association with AASS incidence later in life. Potential puppyhood dietary risk factors for AASS incidence were specified using binary multivariable logistic regression. The model was adjusted for age and sex. RESULTS Eating raw tripe (odds ratio, 95% confidence intervals OR, 95% CI = 0.36, 0.16-0.79; P = .01), raw organ meats (OR, 95% CI = 0.23, 0.08-0.67; P = .007), human meal leftovers, and fish oil supplements as well as eating more that 20% of the diet as raw and/or <80% of the diet as dry, in general, were associated with significantly lower AASS incidence in adulthood. In contrast, dogs fed fruits (OR, 95% CI = 2.01, 1.31-3.07; P = .001), mixed-oil supplements, dried animal parts, and dogs that drank from puddles showed significantly higher AASS incidence in adulthood. CONCLUSIONS AND CLINICAL IMPORTANCE Puppyhood exposure to raw animal-based foods might have a protective influence on AASS incidence in adulthood, while puppyhood exposure to mixed oils, heat processed foods and sugary fruits might be a potential risk factor of AASS incidence later. The study suggests a causal relationship but does not prove it.
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Affiliation(s)
- Manal B M Hemida
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Siru Salin
- Department of Agricultural Sciences, Faculty of Agriculture Forestry, University of Helsinki, Helsinki, Finland
| | - Kristiina A Vuori
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Robin Moore
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Anturaniemi
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Sarah Rosendahl
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Stella Maria Barrouin-Melo
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.,Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Anna Hielm-Björkman
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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de Sousa Gonçalves R, de Pinho FA, Dinis-Oliveira RJ, Mendes MO, de Andrade TS, da Silva Solcà M, Larangeira DF, Silvestre R, Barrouin-Melo SM. Nutritional adjuvants with antioxidant properties in the treatment of canine leishmaniasis. Vet Parasitol 2021; 298:109526. [PMID: 34271314 DOI: 10.1016/j.vetpar.2021.109526] [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: 01/04/2021] [Revised: 06/14/2021] [Accepted: 07/05/2021] [Indexed: 01/03/2023]
Abstract
Clinical improvement of dogs treated for canine leishmaniasis (CanL) requires reducing Leishmania infantum loads, which depend on intracellular oxidant compounds to destroy the parasite. However, oxidative species' excess and antioxidants consumption can culminate in oxidative stress, resulting in increased, widespread inflammation. We aimed to evaluate if early or late addition of nutritional adjuvants (NAs) - omega-3 polyunsaturated fatty acids and B vitamins - to anti-Leishmania drugs (ALDs) in the treatment of CanL would be clinically beneficial. For that, serum biomarkers including oxidative stress parameters were analyzed during 12 months in dogs allocated to two treatment groups: (G1) NAs administered from 30 days prior to the beginning of ALDs; and (G2) NAs administered from 61 days after the beginning of ALDs. Both G1 and G2 continued to receive NAs until the 12th month. The ALDs administered were metronidazole associated with ketoconazole (40 days), followed by allopurinol from day 41 until the 12th month. G1 exhibited superior inflammation control, with reduced globulins (p = 0.025), specific anti-Leishmania immunoglobulins (p = 0.016), total protein (p = 0.031), and an increased serum albumin/globulin ratio (p = 0.033), compared to G2. The early use of NAs associated with ALDs is clinically beneficial in treating dogs with CanL.
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Affiliation(s)
- Rafaela de Sousa Gonçalves
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil; Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057, Braga, Portugal
| | - Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, 40170-110, Salvador, BA, Brazil
| | - Ricardo Jorge Dinis-Oliveira
- TOXRUN - Toxicology Research Unit, Department of Sciences, University Institute of Health Sciences (IUCS), CESPU, CRL, Rua Central de Gandra, 1317, 4585-116, Gandra, Portugal; Department of Public Health and Forensic Sciences, and Medical Education, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; UCIBIO-REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
| | - Mariana Oliveira Mendes
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil
| | - Tiago Sena de Andrade
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil
| | - Manuela da Silva Solcà
- Department of Preventive Veterinary Medicine and Animal Production of the School of Veterinary Medicine and Zootechny, UFBA, 40170-110, Salvador, Bahia, Brazil
| | - Daniela Farias Larangeira
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, 40170-110, Salvador, BA, Brazil
| | - Ricardo Silvestre
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057, Braga, Portugal; ICVS/3B's Associate Laboratory, 4710-057, Braga, Portugal
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, 40170-110, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, 40170-110, Salvador, BA, Brazil.
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9
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Varjão NM, Araújo IBDO, Hlavac N, Nunes TL, Varjão BM, de Pinho FA, Barrouin-Melo SM. Histopathological Parameters of Canine Bone Marrow in Cell-Block Preparations. Top Companion Anim Med 2021; 45:100552. [PMID: 34126227 DOI: 10.1016/j.tcam.2021.100552] [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: 10/15/2020] [Revised: 05/29/2021] [Accepted: 06/07/2021] [Indexed: 11/17/2022]
Abstract
Studies using the cell-block technique for bone marrow (BM) analysis are limited in the veterinary literature. This work assessed whether the histopathological analysis of canine BM was feasible using cell-block cytoinclusions prepared from fine-needle sternal aspirate samples. Eight clinically healthy young-to-middle-aged dogs underwent both fine-needle sternal aspiration for BM cell-block (BM-Cb) processing and iliac-crest BM core biopsy (BM-B). Histopathologic parameters were compared between the 2 methods. There were no statistically significant histopathological differences between hematopoietic tissue areas (P = .6294) in the BM-Cb and BM-B sections, and they had similar microscopic characteristics and microarchitecture. Cellularity and reticulin-fiber staining were equivalent in the BM-Cb and BM-B preparations in 87.5% (7/8) and 100% (8/8) of the sections, respectively. However, the quantitative results of the megakaryocytic series differed between BM-Cb and BM-B in 37.5% (3/8) of the sections, and the myeloid:erythroid (M:E) ratios differed between the 2 methods in 25% (2/8). These preliminary data indicate that cell-block preparations made from sternal fine-needle aspiration samples warrant continued evaluation in a larger number of animals, including those with various diseases affecting the bone marrow.
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Affiliation(s)
- Natasha Milen Varjão
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | | | - Nicole Hlavac
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | - Talyta Lins Nunes
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | - Bruno Milen Varjão
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | - Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine, Federal University of Bahia, Salvador, BA, Brazil.
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10
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Varjão BM, Pinho FAD, Solcà MDS, Silvestre R, Fujimori M, Goto H, Varjão NM, Dias RC, Barrouin-Melo SM. Spatial distribution of canine Leishmania infantum infection in a municipality with endemic human leishmaniasis in Eastern Bahia, Brazil. ACTA ACUST UNITED AC 2021; 30:e022620. [PMID: 34076050 DOI: 10.1590/s1984-29612021034] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 03/15/2021] [Indexed: 12/29/2022]
Abstract
Efforts to control a zoonotic disease such as visceral leishmaniasis (VL) caused by Leishmania infantum can be successful if they rely on comprehensive data on animal infection. In Bahia state, Brazil, human VL is endemic, yet some areas have no epidemiological data on canine L. infantum infection and canine leishmaniasis (CanL) to date. We aimed to perform an epidemiological study describing the spatial distribution and characterizing canine L. infantum infection in two districts of the municipality of Muritiba, where human cases have occurred. Brazilian official serodiagnostic protocol (ELISA and immunochromatographic tests), PCR and clinical examination were performed in 351 owned dogs. A seroprevalence of 15.7% (55/351) was found, and L. infantum identified in 88.8% (32/36) of PCR tested samples. Spatial distribution of positive dogs indicated infection in both urban and rural districts. There was no association between seropositivity and sex or breed, but dogs older than 2 years were 3.8 times more likely to be seropositive (95% CI 1.57 - 9.18) than younger dogs. Among seropositive dogs, 80% (44/55) had clinical manifestations of CanL: 75% (33/44) presented dermatopathy, 50% (22/44) emaciation, and 29.5% (13/44) ophthalmopathy. This is the first report on canine seroprevalence and natural L. infantum infection in Muritiba, Bahia.
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Affiliation(s)
- Bruno Milen Varjão
- Laboratório de Infectologia Veterinária, Hospital-Escola de Medicina Veterinária, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Flaviane Alves de Pinho
- Laboratório de Infectologia Veterinária, Hospital-Escola de Medicina Veterinária, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil.,Departamento de Anatomia, Patologia e Clínicas Veterinárias, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Manuela da Silva Solcà
- Departamento de Medicina Veterinária Preventiva e Produção Animal, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Ricardo Silvestre
- Instituto de Investigação em Ciências da Vida e Saúde - ICVS, Escola de Medicina, Universidade do Minho, Braga, Portugal.,Laboratório Associado ICVS/3B's - Instituto de Investigação em Biomateriais, Biodegradáveis e Biomiméticos, Universidade do Minho, Guimarães, Portugal
| | - Mahyumi Fujimori
- Laboratório de Soroepidemiologia e Imunobiologia, Instituto de Medicina Tropical da Faculdade de Medicina, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Hiro Goto
- Laboratório de Soroepidemiologia e Imunobiologia, Instituto de Medicina Tropical da Faculdade de Medicina, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Natasha Milen Varjão
- Laboratório de Infectologia Veterinária, Hospital-Escola de Medicina Veterinária, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Roberta Costa Dias
- Departamento de Medicina Veterinária Preventiva e Produção Animal, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Stella Maria Barrouin-Melo
- Laboratório de Infectologia Veterinária, Hospital-Escola de Medicina Veterinária, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil.,Departamento de Anatomia, Patologia e Clínicas Veterinárias, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
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11
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Fujimori M, de Almeida ADBPF, Barrouin-Melo SM, Cortez LRPDB, Duthie MS, Hiramoto RM, de Pinho FA, Reed SG, Sousa VRF, Souza NF, Soares RM, Tolezano JE, Sanchez MCA, Goto H. Validation of ELISA with recombinant antigens in serological diagnosis of canine Leishmania infantum infection. Mem Inst Oswaldo Cruz 2021; 116:e200428. [PMID: 33729396 PMCID: PMC7968437 DOI: 10.1590/0074-02760200428] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 02/09/2021] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Dogs are the main peridomiciliary reservoir of Leishmania infantum thus the correct diagnosis of infection is essential for the control of the transmission and treatment as well. However, the diagnosis is based on serological assays that are not fully effective. OBJECTIVE We aimed to establish an effective serological assay for the diagnosis of L. infantum infected dogs using Leishmania-derived recombinant antigens. METHODS Leishmania derived rK39-, rK28-, rKR95-based enzyme-linked immunosorbent assay (ELISA) was standardized using symptomatic and asymptomatic L. infantum-infected dogs. Then 2,530 samples from inquiry in endemic areas for VL were evaluated and the results compared with recommended assays by the Brazilian Ministry of Health (MH algorithm). Further samples from a cohort of 30 dogs were searched. FINDINGS For rK39-, rK28- and rKR95-ELISA the sensitivity was around 97% and specificity 100%. The positivity of these three ELISA in the inquiry samples was 27-28%, around 10% higher than the assays currently in use. When cohort samples were searched, we observed likely false-negative results (> 65%) with supposedly negative samples that turned positive six months later with the assays in use (MH algorithm). MAIN CONCLUSIONS For the diagnosis of L. infantum-infected dogs, rK39-based ELISA showed better diagnostic performance than other assays in use in Brazil and worldwide.
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Affiliation(s)
- Mahyumi Fujimori
- Instituto de Medicina Tropical da Faculdade de Medicina da Universidade de São Paulo, Laboratório de Soroepidemiologia e Imunobiologia, São Paulo, SP, Brasil
| | | | - Stella Maria Barrouin-Melo
- Universidade Federal da Bahia, Hospital-Escola de Medicina Veterinária, Laboratório de Infectologia Veterinária, Salvador, BA, Brasil
| | | | | | - Roberto Mitsuyoshi Hiramoto
- Instituto Adolfo Lutz, Centro de Parasitologia e Micologia, Núcleo de Parasitoses Sistêmicas, São Paulo, SP, Brasil
| | - Flaviane Alves de Pinho
- Universidade Federal da Bahia, Hospital-Escola de Medicina Veterinária, Laboratório de Infectologia Veterinária, Salvador, BA, Brasil
| | | | - Valéria Régia Franco Sousa
- Universidade Federal de Mato Grosso, Faculdade de Medicina Veterinária, Departamento de Clínica Médica Veterinária, Cuiabá, MT, Brasil
| | - Nazaré Fonseca Souza
- Universidade Federal Rural da Amazônia, Instituto da Saúde e Produção Animal, Belém, Pará, Brasil
| | - Rodrigo Martins Soares
- Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Laboratório de Doenças Parasitárias, São Paulo, SP, Brasil
| | - José Eduardo Tolezano
- Instituto Adolfo Lutz, Centro de Parasitologia e Micologia, Núcleo de Parasitoses Sistêmicas, São Paulo, SP, Brasil
| | - Maria Carmen Arroyo Sanchez
- Instituto de Medicina Tropical da Faculdade de Medicina da Universidade de São Paulo, Laboratório de Soroepidemiologia e Imunobiologia, São Paulo, SP, Brasil
| | - Hiro Goto
- Instituto de Medicina Tropical da Faculdade de Medicina da Universidade de São Paulo, Laboratório de Soroepidemiologia e Imunobiologia, São Paulo, SP, Brasil
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Medicina Preventiva, São Paulo, SP, Brasil
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12
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Sampaio JR, Soares RP, Barral TD, Passos GP, Fonseca MS, Meyer R, Barrouin-Melo SM, Portela RW. Leishmania infantum-Derived Glycoinositolphospholipids in the Immunodiagnosis of Subclinically Infected Dogs. Front Vet Sci 2021; 8:581148. [PMID: 33778030 PMCID: PMC7994360 DOI: 10.3389/fvets.2021.581148] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/22/2021] [Indexed: 11/13/2022] Open
Abstract
Lipophosphoglycan (LPG), when used as an ELISA target, confers high specificity and sensitivity to the detection of Leishmania infantum antibodies in dogs. Glycoconjugates are economically viable because the yield is very high after extraction/purification. In addition, they are very stable, which allows their use in point-of-care testing without special storage conditions. During the glycoconjugate extraction, a glycoinositolphospholipid (GIPL)-enriched fraction is obtained in similar quantities as LPG. Since GIPLs can be extracted from the same parasite pellet as LPGs, this work aimed to evaluate the immune recognition of GIPLs by Leishmania infantum-infected dogs and its use for canine leishmaniasis (CanL) immunodiagnosis. Like LPG, GIPLs were recognized by sera from L. infantum-infected dogs, but with less sensitivity (83.8%). However, 80% (16/20) of subclinically infected dogs were detected as positive in the assay. Different from LPG, the GIPL-based assay achieved a lower specificity (73.7%) and cross-reactions occurred with T. cruzi and L. braziliensis-infected dogs. Although GIPLs exhibited a similar performance to LPG for subclinically L. infantum-infected dogs, the occurrence of cross-reactivities with other protozoa and a lower sensitivity hinders its use for an immunodiagnostic test. In places where those diseases do not co-exist such as in the Mediterranean region, its use for subclinically dogs could be an alternative.
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Affiliation(s)
- Julia Ramos Sampaio
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | | | - Thiago Doria Barral
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Gabriela Porfirio Passos
- Departamento de Anatomia, Patologia e Clínicas, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil
| | - Maisa Santos Fonseca
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Roberto Meyer
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Stella Maria Barrouin-Melo
- Departamento de Anatomia, Patologia e Clínicas, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil
| | - Ricardo Wagner Portela
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
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Moore R, Anturaniemi J, Velagapudi V, Nandania J, Barrouin-Melo SM, Hielm-Björkman A. Targeted Metabolomics With Ultraperformance Liquid Chromatography-Mass Spectrometry (UPLC-MS) Highlights Metabolic Differences in Healthy and Atopic Staffordshire Bull Terriers Fed Two Different Diets, A Pilot Study. Front Vet Sci 2020; 7:554296. [PMID: 33195525 PMCID: PMC7653775 DOI: 10.3389/fvets.2020.554296] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/22/2020] [Indexed: 01/09/2023] Open
Abstract
Background: While anecdotal evidence has long claimed that a raw meat-based diet (RMBD) improves the metabolic health of canines, no rigorous scientific study has clarified this issue. Canine atopic dermatitis (CAD) has also been linked to metabolic health, but its relation to diet remains poorly understood. This study investigates whether dietary choice is linked to metabolic health in healthy and CAD-diagnosed canines via targeted serum and urine metabolomic analysis of polar, non-ionic metabolites, as well as whether the underlying CAD condition modulates the response to nutritional intake. Materials and Methods: Serum metabolites of client-owned Staffordshire bull terriers, divided into CAD-diagnosed (n = 14) and healthy (n = 6) cohorts, were studied. Urine metabolites of a subset of the CAD-diagnosed canines (n = 8) were also studied. The canines were split into two cohorts based on diet. The first cohort were fed a commercially available high-fat, moderate-protein, low-carbohydrate RMBD (n = 11, CAD diagnosed n = 8, healthy n = 3). Those in the second cohort were fed a commercially available moderate-fat, moderate-protein, high-carbohydrate kibble diet (KD) (n = 9: CAD diagnosed n = 6, healthy n = 3). The diet intervention period lasted approximately 4.5 months (median 135 days). Statistical analyses of the serum profiles across all dogs (n = 20) and the urine profiles of the CAD-diagnosed subset (n = 8) were performed. Results and Discussion: The KD cohort was found to have higher concentrations of methionine than the RMBD cohort, both in serum (all dogs, p < 0.0001) and in urine (CAD-only cohort, p < 0.0002), as well as cystathionine and 4-pyridoxic acid. Methionine plays important roles in homocysteine metabolism, and elevated levels have been implicated in various pathologies. The CAD (n = 14) cohort dogs showed starker metabolic changes in response to diet regarding these pathways compared to the healthy (n = 6) cohort. However, there was no significant change in CAD severity as a result of either diet. Likely due to the higher meat content of the RMBD, higher concentrations of several carnitines and creatine were found in the RMBD cohort. Citrulline was found in higher concentrations in the KD cohort. Our findings provide insight into the relationship between diet and the serum and urine metabolite profiles of canines. They also suggest that neither diet significantly affected CAD severity.
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Affiliation(s)
- Robin Moore
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Anturaniemi
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Vidya Velagapudi
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Jatin Nandania
- Metabolomics Unit, Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Stella Maria Barrouin-Melo
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Salvador, Brazil
| | - Anna Hielm-Björkman
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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14
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Nicchio BO, Barrouin-Melo SM, Machado MC, Vieira-Filho CH, Santos FL, Martins-Filho EF, Barbosa VF, Barral TD, Portela RW, Damasceno KA, Estrela-Lima A. Hyperresistinemia in Obese Female Dogs With Mammary Carcinoma in Benign-Mixed Tumors and Its Correlation With Tumor Aggressiveness and Survival. Front Vet Sci 2020; 7:509. [PMID: 32903534 PMCID: PMC7438446 DOI: 10.3389/fvets.2020.00509] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/03/2020] [Indexed: 12/16/2022] Open
Abstract
Resistin is associated with metabolic, inflammatory, and neoplastic disorders, and is also considered a prognostic marker in human oncology. Canine mammary tumors have epidemiological, clinical, biological, and genetic characteristics similar to those of women and are proposed as a comparative study model. Here, we evaluate the serum levels of resistin in female dogs with or without mammary carcinoma in mixed tumors (CBMT) and its correlation with the proliferative potential of the tumor, obesity, and survival. Eighty dogs grouped according to the presence (50) or absence (30) of CBMT, reproductive status and body condition were assessed for weight, fat percentage, and canine body mass index. The characteristic of the proliferative potential of the tumor (Ki-67) was evaluated. Ki-67 levels (p = 0.024), staging (p = 0.004), and grade (p = 0.016) influenced the survival of the female dogs. Through a multifactorial analysis, it could be seen that the parameters proliferation index (Ki-67) (p = 0.044) and staging (p = 0.036) influenced the survival of the animals. Neutered and overweight dogs from the control and CBMT groups showed hyperresistinemia. Ki-67 expression and resistin levels in dogs with CBMT were higher in overweight dogs than in dogs with normal weight (p = 0.0001). The survival rate of dogs with CBMT, obese and with high levels of resistin (8,400 μg L−1) was lower when compared to those with lower levels of resistin. These results showed an important relationship between hyperresistinemia, tumor proliferative potential and excessive body fat, suggesting that resistin levels may act as an interesting prognostic marker in patients with CBMT.
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Affiliation(s)
- Bianca Oliveira Nicchio
- School of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil.,Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil
| | | | - Marilia Carneiro Machado
- School of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil.,Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil
| | - Carlos Humberto Vieira-Filho
- School of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil.,Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil
| | - Ferlando Lima Santos
- Health Science Center, Federal University of the Recôncavo of Bahia, Santo Antônio de Jesus, Brazil
| | - Emanoel Ferreira Martins-Filho
- School of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil.,Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil
| | | | - Thiago Doria Barral
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Ricardo Wagner Portela
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Karine Araújo Damasceno
- Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil.,Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil
| | - Alessandra Estrela-Lima
- School of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil.,Research Center on Mammary Oncology NPqOM/HOSPMEV/UFBA, Salvador, Brazil
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15
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Ferreira Bulhosa L, Estrela-Lima A, da Silva Solcà M, Diniz Gonçalves GS, Larangeira DF, de Pinho FA, Barrouin-Melo SM. Vincristine and ivermectin combination chemotherapy in dogs with natural transmissible venereal tumor of different cyto-morphological patterns: A prospective outcome evaluation. Anim Reprod Sci 2020; 216:106358. [PMID: 32414469 DOI: 10.1016/j.anireprosci.2020.106358] [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: 09/25/2019] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 12/27/2022]
Abstract
Vincristine is the first-line drug for the chemotherapy of canine transmissible venereal tumor (CTVT). Drug resistance is related to tumor cyto-morphological patterns of CTVT. There are anti-cancer properties of ivermectin, thus, a combination of ivermectin and vincristine could be an effective chemo-therapeutic treatment regimen for CTVT. Study aims, therefore, were to (1) assess the frequency of CTVT cyto-morphologies, and (2) evaluate treatment efficacy and possible adverse reactions to vincristine compared with a combination vincristine and ivermectin. Dogs (n = 41) with CTVT were characterized by tumor cyto-morphology and disease severity and of those, 20 were randomly allocated into two groups. There was a control group (G-Vin; n = 10) in which there was treatment with vincristine; and an experimental group (G-Iv/Vin; n = 10) in which there was treatment with the ivermectin/vincristine combination. Although dogs in the G-Iv/Vin group had more severe disease at the beginning of the study (P = 0.0031), the number of weeks and chemotherapy sessions until tumor remission were similar among dogs of the two groups, indicating both treatments were effective. There was a decrease in the leukocyte counts (P = 0.0020), related to neutropenia (P = 0.0371) in the G-Vin but not the G-Iv/Vin treatment group. There was no tumor resistance that developed during the study regardless of the treatment regimen used or tumor cytomorphology. In summary, the use of the vincristine/ivermectin combination was well tolerated and efficacious for CTVT treatment.
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Affiliation(s)
- Laiane Ferreira Bulhosa
- Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Bahia, 40170-110, Brazil
| | - Alessandra Estrela-Lima
- Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Bahia, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, Bahia, 40170-110, Brazil
| | - Manuela da Silva Solcà
- Department of Preventive Veterinary Medicine and Animal Production of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, Bahia, 40170-110, Brazil
| | | | - Daniela Farias Larangeira
- Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Bahia, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, Bahia, 40170-110, Brazil
| | - Flaviane Alves de Pinho
- Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Bahia, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, Bahia, 40170-110, Brazil
| | - Stella Maria Barrouin-Melo
- Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, Bahia, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, Bahia, 40170-110, Brazil.
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16
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Godoy ALPC, de Jesus C, Gonçalves RS, Azeredo FJ, Rocha A, Marques MP, Lanchote VL, Larangeira DF, Barrouin-Melo SM. Detection of allopurinol and oxypurinol in canine urine by HPLC/MS-MS: Focus on veterinary clinical pharmacokinetics. J Pharm Biomed Anal 2020; 185:113204. [PMID: 32126445 DOI: 10.1016/j.jpba.2020.113204] [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: 11/27/2019] [Revised: 02/20/2020] [Accepted: 02/22/2020] [Indexed: 10/24/2022]
Abstract
Allopurinol is the most commonly used drug for the treatment of hyperuricemia in people, and in view of the risks of fatal hypersensitivity in patients with renal dysfunction, doses based on the glomerular filtration rate are proposed. In veterinary medicine, allopurinol is used in the treatment of canine leishmaniasis (CanL) caused by Leishmania infantum owing to the drug action of inhibiting the parasite's RNA synthesis. However, renal dysfunction frequently ensues from disease progression in dogs. The purpose of the present study was to standardize and validate a sensitive high-performance liquid chromatography-mass spectrometric (HPLC-MS/MS) method to determine the concentration of allopurinol and its active metabolite oxypurinol in canine urine for clinical pharmacokinetic investigation. Urine samples of eleven (11) dogs with naturally occurring CanL and in the maintenance phase of the treatment with alopurinol were used. For the chromatographic analysis of urine, the mobile phase consisted of a solution of 0.1 % formic acid (88 %) in 10 mM ammonium acetate. Separation of allopurinol and oxypurinol occurred in a flow of 0.8 mL/min on a C8 reverse phase column 5 μm, and acyclovir was the internal standard. The HPLC-MS/MS method was validated by reaching the limits of detection and quantification, reproducibility and linearity. The lower limit of quantification achieved by the method was 10 μg/mL for both allopurinol and oxypurinol. Calibration curves were prepared in blank urine added with allopurinol at concentrations of 10-1000 μg/mL, and oxypurinol at 10-200 μg/mL. Coefficients of variation of less than 15 % between intracurrent and intercurrent accuracy values were observed for both allopurinol and oxypurinol. Urine test samples remained stable after being subjected to freeze-thaw cycles and remaining at room temperature for 4 h. The method proved to be adequate to quantify allopurinol and oxypurinol in urine samples from dogs under treatment.
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Affiliation(s)
- Ana Leonor P C Godoy
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia (UFBA), Rua Barão de Jeremoabo, 147, Salvador, BA, 40170-115, Brazil
| | - Clauceane de Jesus
- Teaching Hospital of Veterinary Medicine, UFBA, Av. Adhemar de Barros, 500, Salvador, BA, 40170-110, Brazil
| | - Rafaela S Gonçalves
- Teaching Hospital of Veterinary Medicine, UFBA, Av. Adhemar de Barros, 500, Salvador, BA, 40170-110, Brazil
| | - Francine Johansson Azeredo
- Department of Medicines, Faculty of Pharmacy, Federal University of Bahia (UFBA), Rua Barão de Jeremoabo, 147, Salvador, BA, 40170-115, Brazil
| | - Adriana Rocha
- Department of Clinical, Toxicological and Bromatological Analyzes, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, S / N, Ribeirão Preto, SP, 14040-903, Brazil
| | - Maria P Marques
- Department of Clinical, Toxicological and Bromatological Analyzes, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, S / N, Ribeirão Preto, SP, 14040-903, Brazil
| | - Vera L Lanchote
- Department of Clinical, Toxicological and Bromatological Analyzes, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida do Café, S / N, Ribeirão Preto, SP, 14040-903, Brazil
| | - Daniela F Larangeira
- Teaching Hospital of Veterinary Medicine, UFBA, Av. Adhemar de Barros, 500, Salvador, BA, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, 40170-110, Brazil
| | - Stella Maria Barrouin-Melo
- Teaching Hospital of Veterinary Medicine, UFBA, Av. Adhemar de Barros, 500, Salvador, BA, 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, 40170-110, Brazil.
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17
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Anturaniemi J, Barrouin-Melo SM, Zaldivar-López S, Sinkko H, Hielm-Björkman A. Owners' perception of acquiring infections through raw pet food: a comprehensive internet-based survey. Vet Rec 2019; 185:658. [PMID: 31427409 PMCID: PMC6952838 DOI: 10.1136/vr.105122] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 06/19/2019] [Accepted: 07/11/2019] [Indexed: 11/26/2022]
Abstract
There has been concerns related to the risk of bacterial contamination from raw pet food to humans, but research is still scarce. The purpose of this cross-sectional study was to use a worldwide internet survey-based data to evaluate the impact of raw pet foods on human health from the owners' experience. From 16 475 households, 0.2 per cent (n=39) reported having had a transmission of pathogen from the raw pet food to a human family member during the time that raw feeding had been used in the household. Only in three of those households the same pathogen that was found in the human sample was analysed and confirmed also in the raw pet food (0.02 per cent of all data). Moreover, 0.1 per cent (n=24) reported suspecting that a disease could have been transmitted to a human from the pet food. Feeding salmon and turkey, using more than 50 per cent of the diet as raw foods and preparing the raw food in the same place and utensils as the family foods all had negative association with infections. Having 2 to 6 year-old children living in the household was associated with more infections, although adults were the most frequently infected.
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Affiliation(s)
- Johanna Anturaniemi
- Department of Equine and Small Animal Medicine, University of Helsinki, Helsinki, Finland
| | | | - Sara Zaldivar-López
- Genomics and Animal Breeding Group, Department of Genetics, University of Córdoba, Córdoba, Spain
| | - Hanna Sinkko
- Department of Equine and Small Animal Medicine, University of Helsinki, Helsinki, Finland
| | - Anna Hielm-Björkman
- Department of Equine and Small Animal Medicine, University of Helsinki, Helsinki, Finland
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18
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Portela RD, Soares RP, Passos GP, Larangeira DF, Barral TD, Sampaio JR, Bernardo MF, Alves-Sobrinho EV, Bahia MT, Pinho FA, Barrouin-Melo SM. Leishmania infantum-derived lipophosphoglycan as an antigen in the accurate serodiagnosis of canine leishmaniasis. PLoS Negl Trop Dis 2019; 13:e0007720. [PMID: 31513599 PMCID: PMC6759188 DOI: 10.1371/journal.pntd.0007720] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 09/24/2019] [Accepted: 08/19/2019] [Indexed: 11/26/2022] Open
Abstract
Lipophosphoglycan (LPG) is the major surface glycoconjugate of Leishmania protozoan and has an important biological role in host-parasite interactions both in the midgut epithelium of the sand fly vector and in the vertebrate macrophages. Canine leishmaniasis (CanL) is a chronic infectious disease predominantly caused by Leishmania infantum. An early and accurate immunodiagnosis of the disease is crucial for veterinary clinical practice and for disease control. In this work, we evaluated L. infantum LPG as an antigen in an indirect enzyme-linked immunosorbent assay (ELISA) for CanL immunodiagnosis (LPG-ELISA) by testing serum samples from 97 naturally infected dogs with diverse clinical presentations ranging from subclinical infection to severe disease, as evaluated by veterinarian infectologists. Serum samples from healthy dogs from non-endemic areas (n = 68) and from dogs with other infectious diseases (n = 64) were used as controls for assay validation. The performance of the LPG-ELISA was compared with that of an ELISA using the soluble fraction of L. infantum total lysate antigen (TLA). LPG-ELISA presented a superior performance in comparison to TLA-ELISA, with 91.5% sensitivity, 98.5% specificity and 99.7% accuracy. A distinguishing feature of the LPG-ELISA compared to the TLA-ELISA was its higher ability to identify subclinical infection in clinically healthy dogs, in addition to the absence of cross-reactivity with other canine infectious diseases. Finally, LPG-ELISA was compared to TR DPP visceral canine leishmaniasis test, the immunochromatographic test recommended by the Brazilian Ministry of Agriculture. LPG-ELISA exhibited higher values of specificity (98.5% versus 93.1%) and sensitivity (91.5% versus 90.6%) compared to TR DPP. In conclusion, L. infantum-derived LPG was recognized by antibodies elicited during CanL in different infection stages and was shown to be a suitable antigen for specific clinical settings of veterinary diagnosis and for public health usage. Canine leishmaniasis (CanL) caused by Leishmania infantum is a zoonotic disease with high importance for the public health of several countries. L. infantum-infected dogs can be a domestic reservoir of the protozoan parasite for sand flies, which transmit it from dogs to humans during their blood meals. It is important to diagnose and treat infected dogs as early as possible, so the dissemination of CanL and the transmission to humans can be controlled. The currently commercially available assays present problems, such as cross-reaction with other canine diseases and lack of sensitivity in the detection of dogs that do not present clinical signs of disease. In this work, we tested lipophosphoglycan (LPG), a molecule abundantly found in the protozoan´s surface, as an antigen in an immunodiagnostic platform. We were able to see that the assay using LPG is highly sensitive and specific, showed no cross-reaction with other canine infectious diseases and successfully identified infected dogs with no signs of disease.
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Affiliation(s)
- Ricardo Dias Portela
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia (UFBA); Salvador, Bahia; Brazil
| | - Rodrigo Pedro Soares
- Laboratory of Cellular and Molecular Parasitology, René Rachou Institute, Oswaldo Cruz Foundation; Belo Horizonte, Minas Gerais; Brazil
| | - Gabriela Porfírio Passos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, UFBA; Salvador, Bahia; Brazil
| | - Daniela Farias Larangeira
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, UFBA; Salvador, Bahia; Brazil
- Department of Anatomy, Pathology, and Veterinary Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil, CEP
| | - Thiago Doria Barral
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia (UFBA); Salvador, Bahia; Brazil
| | - Julia Ramos Sampaio
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia (UFBA); Salvador, Bahia; Brazil
| | - Marcos F. Bernardo
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia (UFBA); Salvador, Bahia; Brazil
| | - Edneia Venâncio Alves-Sobrinho
- Laboratory of Cellular and Molecular Parasitology, René Rachou Institute, Oswaldo Cruz Foundation; Belo Horizonte, Minas Gerais; Brazil
| | - Maria Terezinha Bahia
- Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Campus Morro do Cruzeiro; Ouro Preto, Minas Gerais; Brazil
| | - Flaviane Alves Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, UFBA; Salvador, Bahia; Brazil
- Department of Anatomy, Pathology, and Veterinary Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil, CEP
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, UFBA; Salvador, Bahia; Brazil
- Department of Anatomy, Pathology, and Veterinary Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil, CEP
- * E-mail:
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19
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Magalhães-Junior JT, Oliva-Filho ADA, Novais HO, Mesquita PRR, M Rodrigues F, Pinto MC, Barrouin-Melo SM. Attraction of the sandfly Lutzomyia longipalpis to possible biomarker compounds from dogs infected with Leishmania infantum. Med Vet Entomol 2019; 33:322-325. [PMID: 30652325 DOI: 10.1111/mve.12357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/28/2018] [Revised: 12/04/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
Lutzomyia longipalpis (Diptera: Psychodidae) is the primary vector of Leishmania infantum (Kinetoplastida: Trypanosomatidae) in the Americas. Studies have been carried out to identify new alternatives for monitoring and controlling this sandfly species, particularly with the use of chemical baits. The attractiveness of odours emitted by foxes and alcohols found in some plants has already been demonstrated in laboratory tests with Lu. longipalpis. However, no studies have evaluated the responses of these insects to volatile organic compounds (VOCs) emitted by dogs. The present study was carried out to investigate the effects on Lu. longipalpis of individual and blends of VOCs identified in hair from dogs infected with L. infantum. Effects in male and female Lu. longipalpis were assessed using wind tunnel methodology. Individual compounds including octanal, nonanal, decanal and heptadecane showed capacity for activating and/or attracting male Lu. longipalpis. Only decanal and nonanal showed effects on females. The combination of octanal, decanal and heptadecane increased activation and attraction behaviour in male sandflies, as did the blend of octanal and decanal. These findings indicate that VOCs emitted by dogs may be an interesting source of new attractants of sandflies.
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Affiliation(s)
- J T Magalhães-Junior
- Multidisciplinary Center of Barra, Federal University of Western Bahia (UFOB), Barra, BA, Brazil
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, BA, Brazil
| | - A De A Oliva-Filho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, BA, Brazil
| | - H O Novais
- Agricultural Technological Center of the State of Bahia (CETAB), Salvador, BA, Brazil
| | - P R R Mesquita
- Agricultural Technological Center of the State of Bahia (CETAB), Salvador, BA, Brazil
- Postgraduate Programme in Regional Development and Environment, Maria Milza College (FAMAM), Governador Mangabeira, BA, Brazil
| | - F M Rodrigues
- Agricultural Technological Center of the State of Bahia (CETAB), Salvador, BA, Brazil
- Postgraduate Programme in Regional Development and Environment, Maria Milza College (FAMAM), Governador Mangabeira, BA, Brazil
| | - M C Pinto
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - S M Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Salvador, BA, Brazil
- Department of Veterinary Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil
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Machado MC, da Costa-Neto JM, Portela RD, D'Assis MJMH, Martins-Filho OA, Barrouin-Melo SM, Borges NF, Silva FL, Estrela-Lima A. The effect of naltrexone as a carboplatin chemotherapy-associated drug on the immune response, quality of life and survival of dogs with mammary carcinoma. PLoS One 2018; 13:e0204830. [PMID: 30286124 PMCID: PMC6171873 DOI: 10.1371/journal.pone.0204830] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 09/14/2018] [Indexed: 02/02/2023] Open
Abstract
The objective of this study was to evaluate the effect of low-dose naltrexone (LDN) as a carboplatin chemotherapy-associated drug in female dogs with mammary carcinoma in benign mixed tumors (MC-BMT) after mastectomy and to assess its association with quality of life and survival rates. Sixty female dogs were included in this study, all of which had histopathological diagnosis of MC-BMT and were divided into three groups: G1 (control), consisting of animals submitted only to mastectomy with or without regional metastasis; G2, composed of treated animals that did not present with metastasis; and G3, treated dogs that presented with metastasis. G2 and G3 were also subdivided according to the treatment administered: chemotherapy alone (MC-BMT(-) C/MC-BMT(+) C) or LDN and chemotherapy (MC-BMT(-) C+LDN/MC-BMT(+) C+LDN). All animals were subjected to clinical evaluation, mastectomy, peripheral blood lymphocyte immunophenotyping, beta-endorphin and met-enkephalin quantification, and evaluation of survival rates and quality of life scores. The results showed higher serum concentrations of beta-endorphin and met-enkephalin, fewer chemotherapy-related side effects, and better quality of life and survival rates in the LDN-treated groups than in LDN-untreated groups (P < 0.05). Evaluation of clinical and pathological parameters indicated a significant association between the use of LDN and both prolonged survival and enhanced quality of life. These results indicate that LDN is a viable chemotherapy-associated treatment in female dogs with MC-BMT, maintaining their quality of life and prolonging survival rates.
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Affiliation(s)
- Marília Carneiro Machado
- Department of Anatomy, Pathology and Veterinary Clinics, Federal University of Bahia, Salvador, Bahia, Brazil
| | - João Moreira da Costa-Neto
- Department of Anatomy, Pathology and Veterinary Clinics, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Ricardo Dias Portela
- Laboratory of Immunology and Molecular Biology, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Olindo Assis Martins-Filho
- Laboratory of Diagnostic and Monitoring Biomarkers, Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Stella Maria Barrouin-Melo
- Department of Anatomy, Pathology and Veterinary Clinics, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Natalie Ferreira Borges
- Center for Agrarian, Environmental and Biological Sciences, Federal University of Recôncavo da Bahia, Cruz das Almas, Bahia, Brazil
| | - Fabiana Lessa Silva
- Department of Agrarian and Environmental Sciences, Estadual University of Santa Cruz, Ilhéus, Bahia, Brazil
| | - Alessandra Estrela-Lima
- Department of Anatomy, Pathology and Veterinary Clinics, Federal University of Bahia, Salvador, Bahia, Brazil
- * E-mail:
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21
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Santos RCD, Pinho FAD, Passos GP, Larangeira DF, Barrouin-Melo SM. Isolation of naturally infecting Leishmania infantum from canine samples in Novy-MacNeal-Nicolle medium prepared with defibrinated blood from different animal species. Vet Parasitol 2018; 257:10-14. [PMID: 29907186 DOI: 10.1016/j.vetpar.2018.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 11/10/2017] [Revised: 05/20/2018] [Accepted: 05/21/2018] [Indexed: 11/18/2022]
Abstract
The most commonly used culture medium for the in vitro isolation of Leishmania spp. from canine biological samples is biphasic Novy-MacNeal-Nicolle (NNN) medium, whose solid phase is prepared using rabbit blood. Leishmania infantum parasites from natural infections are highly sensitive and demanding for growth in axenic conditions when firstly obtained from the dog's body. The objective of this study was to evaluate whether NNN medium (NNN-test) prepared with chicken blood (NNN-C), ox blood (NNN-O), horse blood (NNN-H) or sheep blood (NNN-S) was viable for the isolation of parasites from naturally infected dogs, in an endemic area for visceral leishmaniasis caused by L. infantum. Spleen aspirates from six dogs previously diagnosed as infected by parasitological methods were simultaneously inoculated in each NNN-test medium, including the conventional medium prepared with rabbit blood (NNN-R), and the cultures were examined for three weeks under optic microscopy. Spleen samples were also analyzed for parasite loads by quantitative PCR (qPCR). Cultures from three of the six dogs (50%) were positive in at least one of the NNN-test media: one sample presented the highest spleen parasite load by qPCR (1.19 × 104 parasites/mL) and was positive in all test media; the second sample presented parasitic isolation in the first week of culture in all inoculated media, of which the NNN-C medium had the highest mean parasite count (NNN-C = 23.5 × 104/mL vs. NNN-R = 3.25 × 104/mL); the third sample was positive only in the NNN-S medium besides the conventional control NNN-R. Cultures from the three remaining dogs were negative in all NNN media, including the control and test media; of those three dogs, two presented the lowest spleen parasitic loads according to qPCR. Blood from chicken, ox, horse and sheep shown to be viable for the preparation of NNN culture medium for the primary isolation of L. infantum from samples of naturally infected dogs and can be considered as an alternative to rabbit blood when necessary.
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Affiliation(s)
- Roseclea Chagas Dos Santos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil
| | - Gabriela Porfírio Passos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Daniela Farias Larangeira
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil.
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22
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Nery G, Becerra DR, Borja LS, T. Magalhães-Junior J, Souza BM, Franke CR, Veras PS, Larangeira DF, Barrouin-Melo SM. Avaliação da infectividade parasitária a Lutzomyia longipalpis por xenodiagnóstico em cães tratados para leishmaniose visceral naturalmente adquirida. Pesq Vet Bras 2017. [DOI: 10.1590/s0100-736x2017000700009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO: O efeito de um protocolo quimioterápico multidrogas contra a leishmaniose visceral (LV) canina, sobre a capacidade de transmissão de Leishmania infantum ao vetor, foi analisado por meio de xenodiagnóstico. Trinta e cinco cães naturalmente infectados foram avaliados antes e durante o tratamento com a combinação de metronidazol, cetoconazol e alopurinol a cada três meses por até um ano. Em cada avaliação, os cães foram individualmente submetidos ao xenodiagnóstico e quantificação da carga parasitária por PCR quantitativa. O tratamento foi eficaz em bloquear a transmissibilidade parasitária do cão para o flebotomíneo (p= 0,011) nos cães avaliados. Houve significante correlação entre recuperação clínica e infectividade: cães com melhora clínica mais evidente apresentaram menores chances de transferir L. infantum ao Lutzomyia longipalpis via xenodiagnóstico (r=0,528, p= 0,002). Esses resultados demonstram que o tratamento canino com o protocolo proposto pode representar uma alternativa ao sacrifício de cães no Brasil como medida de controle da doença, uma vez que as drogas utilizadas não são aplicadas ao tratamento da LV humana em áreas endêmicas.
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de Sousa Gonçalves R, Franke CR, Magalhães-Junior JT, Souza BMPS, Solcà MS, Larangeira DF, Barrouin-Melo SM. Association between Leishmania infantum DNA in the hair of dogs and their infectiousness to Lutzomyia longipalpis. Vet Parasitol 2016; 232:43-47. [PMID: 27890081 DOI: 10.1016/j.vetpar.2016.11.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 06/21/2016] [Revised: 10/27/2016] [Accepted: 11/08/2016] [Indexed: 11/19/2022]
Abstract
Diagnosis of infection with Leishmania infantum by DNA detection in the hair has been recently demonstrated in dogs and wild animals. Our objective was to investigate if polymerase chain reaction (PCR) in hair might be used to identify infectious dogs. Thus, we assessed the infectiousness to Lutzomyia longipalpis by xenodiagnosis in comparison with the detection of L. infantum DNA by PCR in the hair, and with serology for anti-Leishmania IgG by ELISA in 15 positive dogs for L. infantum infection. Eight healthy dogs were included as negative controls. Among the 15 infected dogs, 13 were found positive in the ELISA (87%), 12 were PCR positive in the hair (80%), and 10 were positive in xenodiagnosis (67%). Positivity in the hair was associated with positivity in spleen (p=0.0003), seropositivity for antibodies (p=0.0006) and parasite transmission to L. longipalpis (p=0.0028). Considering the benefits to animal welfare and feasibility of hair sampling method, studies in larger and more diverse populations of naturally infected dogs from endemic areas should be conducted to evaluate the sensitivity, specificity, and predictive values of PCR using hair as a possible biomarker of infectiousness in dogs.
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Affiliation(s)
- Rafaela de Sousa Gonçalves
- Laboratory of Veterinary Infectious Diseases, Hospital of Veterinary Medicine (HOSPMEV), Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Carlos R Franke
- Laboratory of Veterinary Infectious Diseases, Hospital of Veterinary Medicine (HOSPMEV), Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Preventive Veterinary Medicine and Animal Production of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil
| | - Jairo T Magalhães-Junior
- Laboratory of Veterinary Infectious Diseases, Hospital of Veterinary Medicine (HOSPMEV), Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Bárbara M P S Souza
- Laboratory of Cellular and Molecular Biology, HOSPMEV, UFBA, Salvador, BA, Brazil
| | - Manuela S Solcà
- Laboratory of Pathology and Bio-Intervention, Gonçalo Moniz Research Center, Oswaldo Cruz Foundation-FIOCRUZ/BA, R. Waldemar Falcão 121, Salvador, CEP: 40296-710, BA, Brazil
| | - Daniela F Larangeira
- Laboratory of Veterinary Infectious Diseases, Hospital of Veterinary Medicine (HOSPMEV), Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Hospital of Veterinary Medicine (HOSPMEV), Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, Brazil.
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Borja LS, Sousa OMFD, Solcà MDS, Bastos LA, Bordoni M, Magalhães JT, Larangeira DF, Barrouin-Melo SM, Fraga DBM, Veras PST. Parasite load in the blood and skin of dogs naturally infected by Leishmania infantum is correlated with their capacity to infect sand fly vectors. Vet Parasitol 2016; 229:110-117. [PMID: 27809965 DOI: 10.1016/j.vetpar.2016.10.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [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: 07/13/2016] [Revised: 09/29/2016] [Accepted: 10/02/2016] [Indexed: 11/18/2022]
Abstract
The sand fly Lutzomyia longipalpis is primarily responsible for the transmission of visceral leishmaniasis (VL) in the New World, and dogs are considered to be the main urban reservoir of this disease. In order to improve the efficacy of control measures, it is essential to assess the transmission capacity of Leishmania infantum to the sand fly vector by naturally infected dogs. The present study investigated the existence of correlations between canine clinical presentation and the intensity of parasite load in the blood, skin and spleen of naturally infected dogs. In addition, we also attempted to establish correlations between the intensity of parasite load in canine tissue and the parasite load detected in sandflies five days after feeding on naturally infected dogs. A total of 23 dogs were examined and classified according to clinical manifestation of canine VL. Blood samples, splenic aspirate and skin biopsies were collected and parasite DNA was quantified by qPCR. Canine capacity to infect Lu. longipalpis with parasites was evaluated by xenodiagnosis and parasite loads were measured five days after feeding. No significant differences were observed with respect to canine clinical manifestation and the parasite loads detected in the blood, skin and spleen samples obtained from naturally infected dogs. Regardless of clinical canine visceral leishmaniasis (CVL) presentation and the degree of parasite burden, almost half of the dogs successfully infected sandflies with parasites, albeit to a low number of sandflies with correspondingly low parasite loads. Parasite loads in both canine blood and skin were shown to be positively correlated with the canine infectiousness to the sand fly vector, and positive correlations were also observed with respect to these tissues and the sand fly infection rate, as well as the parasite load detected in sandflies following xenodiagnosis. In conclusion, this indicates that parasite loads in both blood and skin can function as potentially reliable markers of canine capacity to infect sand fly vector.
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Affiliation(s)
- Lairton Souza Borja
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil
| | - Orlando Marcos Farias de Sousa
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil
| | - Manuela da Silva Solcà
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil
| | - Leila Andrade Bastos
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil
| | - Marcelo Bordoni
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil
| | - Jairo Torres Magalhães
- Escola de Medicina Veterinária, Universidade Federal da Bahia, Avenida Adhemar de Barros, 500, Ondina, 40170-110 Salvador, Bahia, Brazil
| | - Daniela Farias Larangeira
- Escola de Medicina Veterinária, Universidade Federal da Bahia, Avenida Adhemar de Barros, 500, Ondina, 40170-110 Salvador, Bahia, Brazil
| | - Stella Maria Barrouin-Melo
- Escola de Medicina Veterinária, Universidade Federal da Bahia, Avenida Adhemar de Barros, 500, Ondina, 40170-110 Salvador, Bahia, Brazil
| | - Deborah Bittencourt Mothé Fraga
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil; Escola de Medicina Veterinária, Universidade Federal da Bahia, Avenida Adhemar de Barros, 500, Ondina, 40170-110 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia em Doenças Tropicais, INCT - DT, Bahia, Brazil
| | - Patrícia Sampaio Tavares Veras
- Laboratório de Patologia e Biointervenção, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ, Rua Waldemar Falcão, 121, Candeal, 40296-710 Salvador, Bahia, Brazil; Instituto Nacional de Ciência e Tecnologia em Doenças Tropicais, INCT - DT, Bahia, Brazil.
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Barrouin-Melo SM, Anturaniemi J, Sankari S, Griinari M, Atroshi F, Ounjaijean S, Hielm-Björkman AK. Evaluating oxidative stress, serological- and haematological status of dogs suffering from osteoarthritis, after supplementing their diet with fish or corn oil. Lipids Health Dis 2016; 15:139. [PMID: 27566551 PMCID: PMC5002171 DOI: 10.1186/s12944-016-0304-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 05/10/2016] [Accepted: 08/10/2016] [Indexed: 02/07/2023] Open
Abstract
Background Oxidative stress plays an important role in the pathogenesis of disease, and the antioxidant physiological effect of omega-3 from fish oil may lead to improvement of canine spontaneous osteoarthritis (OA). Methods In this prospective randomized, controlled, double-blinded study, we assessed haematological and biochemical parameters in dogs with OA following supplementation with either a concentrated omega-3 deep sea fish oil product or corn oil. Blood samples from 77 client-owned dogs diagnosed as having OA were taken before (baseline) and 16 weeks after having orally ingested 0.2 ml/Kg bodyweight/day of deep sea fish oil or corn oil. Circulating malondialdehyde (MDA), glutathione (GSH), non-transferrin bound iron (NTBI), free carnitine (Free-Car), 8-hydroxy-2-deoxyguanosine (8-OH-dG), and serum fatty acids, haemograms and serum biochemistry were evaluated. Differences within and between groups from baseline to end, were analysed using repeated samples T-test or Wilcoxon rank test and independent samples T-test or a Mann-Whitney test. Results Supplementation with fish oil resulted in a significant reduction from day 0 to day 112 in MDA (from 3.41 ± 1.34 to 2.43 ± 0.92 μmol/L; P < 0.001) and an elevation in Free-Car (from 18.18 ± 9.78 to 21.19 ± 9.58 μmol/L; P = 0.004) concentrations, whereas dogs receiving corn oil presented a reduction in MDA (from 3.41 ± 1.34 to 2.41 ± 1.01 μmol/L; P = 0.001) and NTBI (from −1.25 ± 2.17 to −2.31 ± 1.64 μmol/L; P = 0.002). Both groups showed increased (albeit not significantly) GSH and 8-OH-dG blood values. Dogs supplemented with fish oil had a significant reduction in the proportions of monocytes (from 3.84 ± 2.50 to 1.77 ± 1.92 %; P = 0.030) and basophils (from 1.47 ± 1.22 to 0.62 ± 0.62 %; P = 0.012), whereas a significant reduction in platelets counts (from 316.13 ± 93.83 to 288.41 ± 101.68 × 109/L; P = 0.029), and an elevation in glucose (from 5.18 ± 0.37 to 5.32 ± 0.47 mmol/L; P = 0.041) and cholesterol (from 7.13 ± 1.62 to 7.73 ± 2.03 mmol/L; P = 0.011) measurements were observed in dogs receiving corn oil. Conclusions In canine OA, supplementation with deep sea fish oil improved diverse markers of oxidative status in the dogs studied. As corn oil also contributed to the reduction in certain oxidative markers, albeit to a lesser degree, there was no clear difference between the two oil groups. No clinical, haematological or biochemical evidence of side effects emerged related to supplementation of either oil. Although a shift in blood fatty acid values was apparent due to the type of nutraceutical product given to the dogs, corn oil seems not to be a good placebo.
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Affiliation(s)
- Stella Maria Barrouin-Melo
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014, Helsinki, Finland.,Department of Anatomy, Pathology and Clinics, School of Veterinary Medicine and Zootechny, Federal University of Bahia, Av. Adhemar de Barros, 500, CEP: 40170-110, Salvador, Bahia, Brazil
| | - Johanna Anturaniemi
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014, Helsinki, Finland
| | - Satu Sankari
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014, Helsinki, Finland
| | | | - Faik Atroshi
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014, Helsinki, Finland.,Rinnekoti Research Centre, Nousumäki 2, 02980, Espoo, Finland
| | | | - Anna Katrina Hielm-Björkman
- Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, 00014, Helsinki, Finland.
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Cunha RDM, Carneiro AJB, Gonçalves RDS, Becerra DRD, Stöcker A, Barrouin-Melo SM, Franke CR. Envolvimento do Desmodus rotundus no ciclo epidemiológico das leishmanioses na Bahia, Brasil. Rev bras saúde prod anim 2014. [DOI: 10.1590/s1519-99402014000300017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
As leishmanioses são protozoonoses causadas por diferentes espécies do gênero Leishmania. Pouco se sabe sobre o papel de algumas espécies de mamíferos na epidemiologia dessas doenças. Alguns relatos apontam quirópteros como potenciais hospedeiros. Este estudo visa avaliar a presença de infecção por Leishmania spp. em Desmodus rotundus. Métodos moleculares capazes de identificar fragmentos de DNA de Leishmania foram empregados para as análises dos 100 quirópteros envolvidos neste estudo . Em 16% das amostras foram detectados presença de DNA de Leishmania sp. com a PCR (Polymerase Chain Reaction) convencional. Contudo, tal resultado não se repetiu quando avaliadas pela PCR em Tempo Real, aplicada com finalidade de distinção das espécies de Leishmania, o que sugeriu a ocorrência de contaminação das amostras na análise prévia. Apesar deste resultado, aspectos comportamentais e da biologia do D. rotundus sugerem que eles, assim como outras espécies de quirópteros, sejam potenciais hospedeiros destes protozoários.
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Magalhães-Junior JT, Mesquita PRR, Oliveira WFDS, Oliveira FS, Franke CR, Rodrigues FDM, de Andrade JB, Barrouin-Melo SM. Identification of biomarkers in the hair of dogs: new diagnostic possibilities in the study and control of visceral leishmaniasis. Anal Bioanal Chem 2014; 406:6691-700. [PMID: 25171830 DOI: 10.1007/s00216-014-8103-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 08/10/2014] [Accepted: 08/11/2014] [Indexed: 12/01/2022]
Abstract
Visceral leishmaniasis (VL) is a zoonosis whose etiologic agent in the Americas is Leishmania infantum, and dogs are the main host. Research and innovation in diagnostic techniques are essential to improve the surveillance and control of VL in endemic areas. The present study investigates the profile of the volatile organic compounds (VOCs) emitted by healthy dogs and by dogs infected by L. infantum to detect variations in the VOCs that may be used as biomarkers in the diagnosis of VL. In total, 36 dogs were selected from an endemic area and divided into three groups: G1, not infected with L. infantum; G2, infected without clinical signs of VL; and G3, infected with clinical signs of VL. To analyze the profiles of the VOCs emitted by dogs from the three groups, solid-phase microextraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) was used. Variations were observed between the profiles of the VOCs emitted in the three groups studied, and they also differentiated infected animals with or without clinical signs. Six VOCs were identified as potential biomarkers of infection, with significant variations between healthy dogs (G1) and infected dogs (G2 + G3). The detection of variations between groups G2 and G3 suggested that the profiles of some VOCs may be related to the type of immune response and the parasite load of the infected dogs. This study demonstrated the possibility of analysis of VOCs as biomarkers of VL in diagnostic, clinical, and epidemiological work.
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Affiliation(s)
- Jairo Torres Magalhães-Junior
- Laboratório de Infectologia Veterinária, Hospital de Medicina Veterinária, Universidade Federal da Bahia - UFBA, Avenida Adhemar de Barros, 500. Campus Universitário de Ondina, Salvador, BA, 40170-110, Brazil,
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Fernandes CB, Junior JTM, de Jesus C, Souza BMPDS, Larangeira DF, Fraga DBM, Tavares Veras PS, Barrouin-Melo SM. Comparison of two commercial vaccines against visceral leishmaniasis in dogs from endemic areas: IgG, and subclasses, parasitism, and parasite transmission by xenodiagnosis. Vaccine 2014; 32:1287-95. [DOI: 10.1016/j.vaccine.2013.12.046] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 11/22/2013] [Accepted: 12/19/2013] [Indexed: 11/26/2022]
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Magalhães-Junior JT, Barrouin-Melo SM, Corrêa AG, da Rocha Silva FB, Machado VE, Govone JS, Pinto MC. A laboratory evaluation of alcohols as attractants for the sandfly Lutzomyia longipalpis (Diptera:Psychodidae). Parasit Vectors 2014; 7:60. [PMID: 24502386 PMCID: PMC3923435 DOI: 10.1186/1756-3305-7-60] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 11/07/2013] [Accepted: 01/31/2014] [Indexed: 12/02/2022] Open
Abstract
Background The potential attraction from 1-octen-3-ol for sandflies has been documented; however, studies using other primary alcohols are limited. Findings We used a wind tunnel to compare the activation and attractive behaviors in male and female Lutzomyia longipalpis using 1-octen-3-ol and three additional alcohols, 1-octanol, 1-heptanol and 1-nonanol at three different concentrations: neat (100%) and diluted in hexane (10% and 50%). The compounds 1-octen-3-ol and 1-nonanol induced a clear concentration-dependent activation and attraction response in females. In males, 1-octen-3-ol, 1-nonanol and 1-heptanol yielded the same results. Conclusions L. longipalpis is attracted to 1-octen-3-ol, 1-nonanol and 1-heptanol, which are found in many plant volatiles.
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Affiliation(s)
| | | | | | | | | | | | - Mara Cristina Pinto
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Julio de Mesquita Filho, UNESP, 14801-902 Araraquara, SP, Brazil.
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Penha EM, Aguiar PHP, Barrouin-Melo SM, de Lima RS, da Silveira ACC, Otelo ARS, Pinheiro CMB, Ribeiro-Dos-Santos R, Soares MBP. Clinical neurofunctional rehabilitation of a cat with spinal cord injury after hemilaminectomy and autologous stem cell transplantation. Int J Stem Cells 2013; 5:146-50. [PMID: 24298368 DOI: 10.15283/ijsc.2012.5.2.146] [Citation(s) in RCA: 9] [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] [Accepted: 08/09/2012] [Indexed: 12/23/2022] Open
Abstract
Stem cell-based therapy has been investigated in a number of degenerative and traumatic diseases, including spinal cord injury. In the present study, we investigated the use of autologous mesenchymal stem cells in the functional rehabilitation of a domestic cat presenting a compressive L1-L5 fracture. Bone marrow cells collected by puncture of the iliac crest were cultured to obtain mesenchymal stem cells three weeks before surgery. Hemilaminectomy was performed, followed by injection of the mesenchymal stem cells in the injured area. Clinical evaluation of the animal prior to surgery showed absence of pain, muscular tonus, and panniculi reflexes. Seven days after surgery and cell transplantation the examination revealed a progressive recovery of the panniculus reflexes and of the responses to superficial and deep pain stimuli despite the low proprioceptive and hyperreflexic ataxic hind limbs. Physiotherapy protocols were applied for clinical rehabilitation after surgery. The cat's first steps, three-minute weight-bearing, and intestine and urinary bladder partial reestablishment were observed 75 days post-surgery. Our results indicate the therapeutic potential of mesenchymal stem cells in chronic spinal cord injuries.
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Affiliation(s)
- Euler M Penha
- Escola de Medicina Veterinária, Universidade Federal da Bahia ; Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz
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Ferreira PR, Larangeira DF, Oliveira LSD, Malta MDC, Gomes MC, Bastos BL, Portela RW, Barrouin-Melo SM. Teste de ELISA indireto para diagnóstico sorológico de leishmaniose visceral em canídeos silvestres. Pesq Vet Bras 2013. [DOI: 10.1590/s0100-736x2013000400018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Na América do Sul, alguns canídeos silvestres são considerados reservatórios naturais da Leishmania chagasi. A resposta imunológica desses animais à Leishmania é pouco conhecida, havendo a necessidade de métodos diagnósticos adequados para esse fim. No presente estudo, é descrita a padronização do ensaio imunoenzimático indireto (ELISA) para o diagnóstico sorológico de leishmaniose visceral em canídeos silvestres brasileiros. Foram estudadas amostras de soro e plasma de 12 canídeos cativos: sete lobos-guará (Chrysocyon brachyurus), três raposinhas (Lycalopex vetulus) e dois cachorros-do-mato (Cerdocyon thous). As amostras de um C. brachyurus e uma L. vetulus, cativos em área endêmica para LV, que apresentavam doença clínica e positividade em testes de Imunofluorescência Indireta e Reação em Cadeia de Polimerase, foram utilizadas como controles positivos. Foram comparados os conjugados anti-IgG de cão e proteína A, ambos ligados a peroxidase, cujos testes detectaram quatro (04/12) e três (03/12) C. brachyurus soropositivos para anticorpos anti-Leishmania sp., respectivamente. As médias das densidades ópticas (DOs) das amostras negativas foram nitidamente mais baixas do que as médias das DOs dos positivos tanto no ELISA com anti-IgG de cão (4,8 vezes) como com proteína A (15,5 vezes). Os soros de três C. brachyurus positivos no ELISA indireto foram avaliados por Western blotting e identificaram 22 bandas, sendo imunodominantes as de peso molecular de 19, 22, 24, 45 e 66 kDa. Os testes ELISA com a proteína A e o conjugado anti-IgG de cão apresentaram respectivamente concordância excelente (Kappa = 1; p<0,001) e moderada (Kappa = 0,8; p<0,0015), com o Western blotting. Ambos foram, portanto, considerados adequados a avaliações de triagem de animais cuja resposta humoral de anticorpos indica contato com o parasito, úteis para subsidiar estudos para adequação de metodologias específicas para os canídeos silvestres.
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Regis SCS, Mendonça LR, Silva NDS, Dattoli VCC, Alcântara-Neves NM, Barrouin-Melo SM. Seroprevalence and risk factors for canine toxocariasis by detection of specific IgG as a marker of infection in dogs from Salvador, Brazil. Acta Trop 2011; 120:46-51. [PMID: 21703221 DOI: 10.1016/j.actatropica.2011.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 05/25/2011] [Accepted: 05/27/2011] [Indexed: 11/19/2022]
Abstract
Toxocara canis is a highly prevalent worldwide canine nematode responsible for enzootic and zoonotic infections. It is considered to be one of the main agents of human visceral and ocular larva migrans. False negative diagnosis may occur because adult infected dogs with "dormant" larvae may have negative fecal test results since they usually do not shed parasite eggs in their stools. During pregnancy, the larvae become active and infect the offspring through the placenta. A serological test can distinguish infected animals, thus increasing the accuracy of the diagnosis for epidemiological studies and prophylactic purposes. In the present work a serological investigation was carried out to study the risk factors for the acquisition of this infection in 301 dogs inhabiting the city of Salvador, northeast Brazil. A validated questionnaire was applied to the donors and caretakers to assess animal management practices. All dogs were submitted to clinical evaluation and blood collection. Serum samples were analyzed for IgG antibodies against excretory-secretory products of T. canis larvae, used as antigens, by indirect ELISA. The overall seroprevalence of anti-T. canis IgG antibodies was 82.7%. Risk factors for T. canis infection included sex, area of origin within the city, homemade leftover food intake, failure to receive regular vaccination against infectious diseases and lack of preventive anti-helminthic treatment. Most of these risk factors suggest a lack of veterinary care and poverty. The high frequency of seropositivity found for toxocariasis in dogs suggests that results based on parasitological fecal examination could underestimate the actual prevalence of the infection.
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Affiliation(s)
- Sabynne Christina Silva Regis
- Laboratório de Infectologia Veterinária, Escola de Medicina Veterinária, Universidade Federal da Bahia, Avenida Adhemar de Barros 500, Ondina CEP: 40170-110 Salvador, Bahia, Brazil
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Souza RF, Dattoli VCC, Mendonça LR, Jesus JRD, Baqueiro T, Santana CDC, Santos NM, Barrouin-Melo SM, Alcantara-Neves NM. Prevalência e fatores de risco da infecção humana por Toxocara canis em Salvador, Estado da Bahia. Rev Soc Bras Med Trop 2011; 44:516-9. [DOI: 10.1590/s0037-86822011000400024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Accepted: 08/11/2010] [Indexed: 11/22/2022] Open
Abstract
INTRODUÇÃO: Larva migrans visceral é causada por Toxocara sp e nunca foi estudada na Bahia. Neste trabalho, investigou-se a prevalência e fatores de risco de infecção por Toxocara canis, em indivíduos de Salvador. MÉTODOS: Trezentos e trinta e oito indivíduos foram investigados para presença de anticorpos IgG séricos anti-T. canis. RESULTADOS: IgG anti-T. canis foi mais alta em indivíduos de classe social baixa com maior contato com cães e gatos, indicando que estas variáveis são fatores de risco para esta infecção. CONCLUSÕES: A prevalência de infecção por T. canis foi alta. Os fatores de risco desta infecção encontrados estão de acordo com a literatura.
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Larangeira DF, Aguiar PHP, de Sá Oliveira GG, dos-Santos WLC, Pontes-de-Carvalho L, Barrouin-Melo SM. Characterization of clinical, immunological and parasitological parameters during a steady state of improvement of after chemotherapy of Leishmania chagasi naturally infected dogs. Vet Immunol Immunopathol 2009. [DOI: 10.1016/j.vetimm.2008.10.183] [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: 10/21/2022]
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Barrouin-Melo SM, Poester FP, Ribeiro MB, de Alcântara AC, Aguiar PHP, Nascimento IL, Schaer RE, Nascimento RM, Freire SM. Diagnosis of canine brucellosis by ELISA using an antigen obtained from wild Brucella canis. Res Vet Sci 2007; 83:340-6. [PMID: 17442351 DOI: 10.1016/j.rvsc.2007.02.006] [Citation(s) in RCA: 15] [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] [Received: 06/20/2006] [Revised: 02/05/2007] [Accepted: 02/19/2007] [Indexed: 01/18/2023]
Abstract
An indirect ELISA test was developed for the diagnosis of Brucella canis infection in dogs. A bacterial whole cell extract was used as a solid phase antigen, using B. canis isolated from an infected animal. Sera from culture-positive and healthy negative animals were used as internal reference controls. The cut-off point was determined by a mathematical formula for a statistically valid value, which defined the upper prediction limit, based on the upper tail of the t-distribution of 21 negative control sera readings, for the confidence level of 99.5%. The sensitivity and specificity of the ELISA test were 95% and 91%, respectively. The ELISA test showed a significant concordance index (K=0.84) with the agar gel immunodiffusion test. The reliability of the ELISA for the detection of infected animals was established by a double blind study testing 280 sera provided by serum banks from different diagnostic and research institutions and analyzed by ROC Curve.
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Affiliation(s)
- Stella Maria Barrouin-Melo
- Departamento de Patologia e Clínicas, Escola de Medicina Veterinária, Universidade Federal da Bahia, Av. Adhemar de Barros, 500 Salvador, BA, CEP 40170-110, Brazil.
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Barrouin-Melo SM, Larangeira DF, Santos SO, Chagas-Júnior AD, Paixão M, Aguiar PHP, dos-Santos WLC, Pontes-de-Carvalho L. A standardized cytological and immunochemical method for the analysis of fine-needle spleen aspirates: Assessment of leukocyte population changes in canine visceral leishmaniosis. Vet Immunol Immunopathol 2006; 111:251-61. [PMID: 16546267 DOI: 10.1016/j.vetimm.2006.01.021] [Citation(s) in RCA: 10] [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: 05/31/2005] [Revised: 01/13/2006] [Accepted: 01/18/2006] [Indexed: 11/26/2022]
Abstract
A method for the evaluation of splenic cellularity using samples collected by fine-needle aspirative biopsy was standardized in this work. The procedure includes erythrocyte lysing, preparation of cytospin films and staining by histochemical and immunocytochemical techniques. The cellular profiles of spleen preparations were compared with those observed in peripheral blood samples subjected to the same procedure. Two groups were compared, one consisting of 14 healthy uninfected and the other of 15 polysymptomatic Leishmania chagasi/infantum-infected dogs, from an endemic area for visceral leishmaniosis. Cell populations were identified by conventional hematoxilin-eosin and Wright' stainings, and by immunocytochemistry using monoclonal antibodies against canine CD45RA and CD45RB, phagocytes and a pan-leukocyte antigen. Larger neutrophil (P < 0.0001) and monocyte/macrophage (P = 0.0036) relative counts and lower lymphocyte relative counts (P < 0.0001) were found in the spleen, and not in the blood, of the animals with leishmaniosis than in those of the healthy animals. The proportions of CD45RB+ cells were higher, and of CD45RA+ cells were lower, both in the spleen and in the blood of animals with leishmaniosis than in those of healthy dogs (P < 0.05). Additionally, hematoxilin-eosin-stained cytospins of spleen aspirates from Leishmania-infected animals permitted the easy visualization of amastigote forms inside phagocytes, under light microscopy.
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Affiliation(s)
- Stella Maria Barrouin-Melo
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Rua Valdemar Falcão 121, Salvador 40295-001, Brazil.
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Barrouin-Melo SM, Larangeira DF, de Andrade Filho FA, Trigo J, Julião FS, Franke CR, Palis Aguiar PH, Conrado dos-Santos WL, Pontes-de-Carvalho L. Can spleen aspirations be safely used for the parasitological diagnosis of canine visceral leishmaniosis? A study on assymptomatic and polysymptomatic animals. Vet J 2006; 171:331-9. [PMID: 16490717 DOI: 10.1016/j.tvjl.2004.11.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2004] [Indexed: 11/21/2022]
Abstract
The purpose of this study was to evaluate the safety of spleen aspiration as a sampling technique for the parasitological detection by culture and microscopy of Leishmania (chagasi) infantum. Two hundred and nine domiciled dogs from an endemic area for visceral leishmaniasis in Bahia State, Brazil, were studied. Most dogs (87%) were seropositive for anti-L. chagasi antibodies by ELISA. Clinical signs of disease were recorded and the animals monitored during and after spleen puncture in order to detect possible complications associated with the procedure. From a total of 257 splenic punctures in the 209 animals, only three minor events occurred, with no significant consequence for the animals and no association with risk factors. Leishmania was isolated from 149/180 (83%) seropositive dogs, and from 6/26 (23%) seronegative animals. The procedure did not cause adverse side effects or unnecessary suffering and confirmed the diagnosis in a large percentage of dogs. We conclude that spleen aspiration can be considered an effective and safe procedure for the definitive diagnosis of canine visceral leishmaniosis.
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Affiliation(s)
- Stella Maria Barrouin-Melo
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Rua Valdemar Falcão 121, Salvador 40295-001, Brazil.
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Aguiar PHP, Barrouin-Melo SM, Franke CR, dos Santos RRB, Silva TMC, Mengel JO, dos-Santos WLC, Pontes-de-Carvalho L. A monoclonal antibody against a canine CD45 homologue: analysis of tissue distribution, biochemical properties and in vitro immunological activity. Vet J 2005; 173:158-66. [PMID: 16249107 DOI: 10.1016/j.tvjl.2005.08.015] [Citation(s) in RCA: 3] [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] [Accepted: 08/02/2005] [Indexed: 11/22/2022]
Abstract
This report describes the characterisation of a monoclonal antibody (mAb), AB6, which recognises specifically a cluster of canine leukocyte surface molecules. The immunogen used for obtaining the AB6 mAb was a lysate of canine peripheral blood mononuclear cells (PBMC). This novel mAb belongs to the IgG2a isotype, and reacted in Western blot with four different canine leukocyte glycoproteins with apparent molecular weights of 180, 190, 205 and 220 kDa. The AB6 mAb recognised the majority of canine peripheral blood leukocytes as determined by flow cytometry (97%). It also exhibited a broad reactivity pattern against lymphoid and myeloid cells, inhibited the proliferation of mitogen-stimulated canine PBMC and did not recognise human PBMC and murine splenocytes. The biochemical properties, cell and tissue specificity, and in vitro biological activity of the AB6 mAb indicate that it recognises a canine CD45 homologue. The mAb could become a valuable diagnostic and research tool for the evaluation of immune functions in dogs.
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Affiliation(s)
- Paulo Henrique Palis Aguiar
- Laboratorio de Patologia e Bio-Intervenção, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Bahia, Brazil.
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Aguiar PHP, Borges dos Santos RR, Larangeira DF, Almeida dos Santos M, Barrouin-Melo SM, Silva TMC, Mengel JO, Conrado dos Santos WL, Pontes-de-Carvalho L. A novel monoclonal antibody against canine monocytes/macrophages. ACTA ACUST UNITED AC 2005; 23:250-7. [PMID: 15319073 DOI: 10.1089/1536859041651303] [Citation(s) in RCA: 3] [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] [Indexed: 11/13/2022]
Abstract
The production and partial characterization of a monoclonal antibody, the IgG1 IH1, which recognizes an antigen distributed in canine monocytes/macrophages, is reported here. The distribution and apparent molecular weight of the antigen recognized by the IH1 MAb was determined in peripheral blood leukocytes, peripheral blood monocyte-derived macrophages and tissue sections of spleen, liver and skin, using Western blotting, immunocytochemistry, immunohistochemistry and flow cytometry. The IH1 MAb-recognized antigen was detected in Western blotting under non-reducing conditions spread out as a large band covering the position corresponding to the migration of molecules with molecular weights from 55 to 73 kDa. The IH1 MAb labeled blood monocytes, tissue macrophages in lymph nodes, and in the mantle zone of the spleen, and Kupffer cells in the liver. It did not react with human cells. In flow cytometric analysis, the IH1 MAb reacted with a subpopulation of monocytes. The MAb described herein may become a valuable tool for diagnosis and research on canine diseases.
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Affiliation(s)
- Paulo Henrique Palis Aguiar
- Laboratorio de Patologia e Bio-Intervenção, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Bahia, Brazil.
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dos Santos LR, Barrouin-Melo SM, Chang YF, Olsen J, McDonough SP, Quimby F, dos Santos WLC, Pontes-de-Carvalho LC, Oliveira GGDS. Recombinant single-chain canine interleukin 12 induces interferon gamma mRNA expression in peripheral blood mononuclear cells of dogs with visceral leishmaniasis. Vet Immunol Immunopathol 2004; 98:43-8. [PMID: 15127840 DOI: 10.1016/j.vetimm.2003.10.006] [Citation(s) in RCA: 11] [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] [Indexed: 10/26/2022]
Abstract
Canine visceral leishmaniasis poses important concerns for public health and veterinary medicine in many areas of the world. Resistance to it seems to be associated with cellular specific immune responses of the so-called Th1 type. Interleukin-12 (IL-12) is one of the most potent inducers of Th1 type of immune responses to co-administered antigens. Herein, the cloning of canine IL-12, as a single-chain fusion protein (sccaIL-12), and its expression in biologically active form in COS-7 cells is reported. Supernatants from these cells stimulated the expression of comparable amounts of interferon gamma mRNA in peripheral blood mononuclear cells from dogs with natural visceral leishmaniasis. In addition, after stimulation with sccaIL-12, there was no difference between interferon gamma mRNA expressions in peripheral blood mononuclear cells of dogs with visceral leishmaniasis and from normal healthy control animals.
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Affiliation(s)
- Lenita Ramires dos Santos
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Rua Waldemar Falcão, No. 121, Brotas, Salvador-Bahia, CEP 40295-001, Brazil
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Aguiar PHP, Borges dos Santos RR, Lima CA, Rios de Sousa Gomes H, Larangeira DF, Santos PM, Barrouin-Melo SM, Conrado dos-Santos WL, Pontes-de-Carvalho L. Production of Monoclonal Antibodies Against Canine Leukocytes. ACTA ACUST UNITED AC 2004; 23:127-32. [PMID: 15165486 DOI: 10.1089/153685904774129739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/13/2022]
Abstract
A panel of anti-canine leukocyte monoclonal antibodies (MAbs) was produced by immunizing BALB/c mice with canine peripheral blood mononuclear cells (PBMC), either resting or stimulated with concanavalin A (ConA). Three out of 28 clones-IH1, AB6, and HG6-screened by ELISA and producing antibody with the highest specificity for canine cell immunostaining, were subjected to three subsequent subcloning steps by limiting dilution, and selected for further characterization. These MAbs belonged to IgG1 (HG6 and IH1) and IgG2a (AB6) isotypes. The distribution of cell populations expressing the antigen recognized by the antibodies was identified by indirect immunoflorescence on canine PBMC and on tissue sections of lymph node, spleen, liver and skin. The possible crossreactivity with human PBMC was also examined in immunocytochemistry. One of the antibodies specifically recognized macrophages. The MAbs presented here can be foreseen as possible valuable diagnostic and research tools to study immune functions in dogs.
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Affiliation(s)
- Paulo Henrique Palis Aguiar
- Laboratory of Molecular and Cellular Immunology, Gonçalo Moniz Research Center, Oswaldo Cruz Foundation, Bahia, Brazil.
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Barrouin-Melo SM, Larangeira DF, Trigo J, Aguiar PHP, dos-Santos WLC, Pontes-de-Carvalho L. Comparison between splenic and lymph node aspirations as sampling methods for the parasitological detection of Leishmania chagasi infection in dogs. Mem Inst Oswaldo Cruz 2004; 99:195-7. [PMID: 15250475 DOI: 10.1590/s0074-02762004000200014] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The sensitivities of spleen and lymph node cultures for the diagnosis of canine visceral leishmaniasis were compared in 64 anti-Leishmania antibody positive dogs from an endemic area in Brazil. The sensitivity of spleen cultures for Leishmania detection was 97.9%; in lymph node cultures it was 25%. Positive spleen culture was more frequent (p = 0.048, Fisher's exact probability test) in symptomatic (28 out of 33 animals) than in asymptomatic animals (19 out of 31 animals). These results support the use of spleen instead of lymph node aspiration as the choice method for the parasitological diagnosis of the infection.
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Magalhães-Junior JT, Mota TF, Larangeira DF, Dias-Lima AG, Franke CR, Barrouin-Melo SM. PRIMEIRO RELATO DA OCORRÊNCIA DE EVANDROMYIA SALLESI E EVANDROMYIA CORTELEZZII (DIPTERA: PSYCHODIDAE) NA REGIÃO METROPOLITANA DE SALVADOR, BAHIA, BRASIL. ACTA ACUST UNITED AC 1970. [DOI: 10.22278/2318-2660.2012.v36.n4.a792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Este é o primeiro relato da ocorrência de Evandromyia sallesi (Galvão & Coutinho) e Evandromyia cortelezzii (Brèthes) na região metropolitana de Salvador, Bahia. Os flebotomíneos foram capturados com armadilhas luminosas CDC, durante um estudo investigativo em 24 localidades. A vigilância entomológica foi realizada entre setembro/2009 e março/2010, sendo coletados 13 espécimes de cinco bairros diferentes e classificados dentro do gênero Evandromyia.
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