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R Parthiban AB, Palavesam A, Srinivasan S, Mohanan A, Ghosh S, Krishnaswamy Gopalan T. Molecular characterization of Ehrlichia canis from naturally infected dogs reveals a novel Asiatic-lineage and co-circulation of multiple lineages in India. Res Vet Sci 2024; 175:105311. [PMID: 38823355 DOI: 10.1016/j.rvsc.2024.105311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 06/03/2024]
Abstract
Canine monocytic ehrlichiosis caused by Ehrlichia canis is an important rickettsial pathogen of dogs transmitted by Rhipicephalus sanguineus sensu lato ticks in India. Globally, molecular characterization of E. canis is done using different E. canis gene targets. This study aimed to characterize genetic diversity of uncultured Ehrlichia species from dogs by 16S rRNA and partial gp200 gene (termed as p43 region) sequences data. Phylogeny based on 16S rRNA gene did not reveal any region-specific lineages. The phylogeny based on 5' region of E. canis gp200 gene (termed as p43 region) revealed four major clusters (A, B, C and D) and the Indian isolates fall under clusters A and B. Cluster A is characterized by an insertion of unique 141 bp tandem repeat sequence. Similar tandem repeat sequence was found in one of the E canis isolates from east-Asia, suggesting a possible divergence within this species. The study shows evidence for divergence of a new lineage within E. canis. The location of this insertion at the 'ankyrin repeat domains' containing region is suggestive of its possible role in modulation of host responses.
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Affiliation(s)
- Aravindh Babu R Parthiban
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Azhahianambi Palavesam
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India.
| | - Sharmila Srinivasan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Arya Mohanan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Srikanta Ghosh
- ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India
| | - Tirumurugaan Krishnaswamy Gopalan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
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Lira-Amaya JJ, Beristain-Ruiz DM, Racanco-Delgado J, Garza-Hernández JA, Vital-García C, Santamaria-Espinosa M, Martínez-García G, Alvarez-Martínez A, Quezada-Casasola A, Rojas-Martínez C, Alvarado-Robles B, Figueroa-Millán JV. Molecular Detection and Characterization of Ehrlichia canis Isolates from Three Geographic Regions in Mexico: A Retrospective Study. Life (Basel) 2023; 13:1629. [PMID: 37629486 PMCID: PMC10456115 DOI: 10.3390/life13081629] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Canine monocytic ehrlichiosis (CME) is the most common tick-borne disease affecting domestic dogs and other wild canids. It has a worldwide distribution and is associated with the presence of the brown dog tick. Few studies have been conducted in Mexico to identify and characterize Ehrlichia canis genetic variability. In the present study, 111 dogs of different sex, breed, and age from three geographic regions in Mexico were included. All of them had a previous history of tick infestation and/or the presence of one or more clinical signs compatible with CME. All dogs were tested by a commercial ELISA and nested PCR assay for the detection of E. canis. In addition, we analyzed the E. canis genetic diversity from the 16S rRNA gene sequences obtained in this study, along with 15 additional sequences described for E. canis in Mexico and obtained from GeneBank. Serological detection by commercial ELISA results showed overall infection rates of 85.58% (95/111), including 73.1% (30/41) in samples from Guerrero state; 75% (15/20) in Morelos; and 100% (50/50) in Chihuahua. On the other hand, molecular detection (nPCR assay) showed 31.5% (35/111) overall infection rate, with 41.4% (17/41) in Guerrero state; 55% (11/20) in Morelos; and 14% (7/50) in Chihuahua. We observed a high 16S rRNA gene sequence conservancy in most of the E. canis isolates in the three geographical areas from Mexico, including those analyzed in this research, suggesting a common geographic origin among isolates.
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Affiliation(s)
- José Juan Lira-Amaya
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
| | - Diana M. Beristain-Ruiz
- Departamento de Ciencias Veterinarias, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n Colonia Progresista AP 1729-D Cd., Ciudad Juárez 32310, Chihuahua, Mexico; (D.M.B.-R.); (C.V.-G.); (A.Q.-C.); (B.A.-R.)
| | - Jesús Racanco-Delgado
- Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Guerrero, Km. 3.5, de la Carretera Altamirano-Iguala, Ciudad Altamirano 39640, Guerrero, Mexico;
| | - Javier A. Garza-Hernández
- Departamento de Ciencias Químico-Biológicas, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n Colonia Progresista, Ciudad Juárez 32310, Chihuahua, Mexico;
| | - Cuauhcihuatl Vital-García
- Departamento de Ciencias Veterinarias, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n Colonia Progresista AP 1729-D Cd., Ciudad Juárez 32310, Chihuahua, Mexico; (D.M.B.-R.); (C.V.-G.); (A.Q.-C.); (B.A.-R.)
| | - Montserrat Santamaria-Espinosa
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
| | - Grecia Martínez-García
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
| | - Antonio Alvarez-Martínez
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
| | - Andrés Quezada-Casasola
- Departamento de Ciencias Veterinarias, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n Colonia Progresista AP 1729-D Cd., Ciudad Juárez 32310, Chihuahua, Mexico; (D.M.B.-R.); (C.V.-G.); (A.Q.-C.); (B.A.-R.)
| | - Carmen Rojas-Martínez
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
| | - Beatriz Alvarado-Robles
- Departamento de Ciencias Veterinarias, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente y Estocolmo s/n Colonia Progresista AP 1729-D Cd., Ciudad Juárez 32310, Chihuahua, Mexico; (D.M.B.-R.); (C.V.-G.); (A.Q.-C.); (B.A.-R.)
| | - Julio V. Figueroa-Millán
- CENID-Salud Animal e Inocuidad, INIFAP, Carretera Cuernavaca-Cuautla No. 8534, Jiutepec 62550, Morelos, Mexico; (J.J.L.-A.); (M.S.-E.); (G.M.-G.); (A.A.-M.); (C.R.-M.)
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Pereira ME, Canei DH, Carvalho MR, Dias ÁFDLR, de Almeida ADBPF, Nakazato L, Sousa VRF. Molecular prevalence and factors associated with Ehrlichia canis infection in dogs from the North Pantanal wetland, Brazil. Vet World 2023; 16:1209-1213. [PMID: 37577206 PMCID: PMC10421559 DOI: 10.14202/vetworld.2023.1209-1213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/09/2023] [Indexed: 08/15/2023] Open
Abstract
Background and Aim Canine monocytic ehrlichiosis is a vector-borne disease caused by the obligatory intracellular bacterium Ehrlichia canis, which is distributed across tropical and subtropical regions worldwide. Its prevalence within dog populations is high in municipalities located across the Pantanal biome, but it remains unknown in Barão de Melgaço, Mato Grosso, Brazil. This study aimed to determine the molecular prevalence and factors associated with E. canis infection in dogs domiciled in Barão de Melgaço. Materials and Methods A cross-sectional study was carried out to investigate the prevalence of E. canis infection in 369 dogs from urban and rural areas in Barão de Melgaço, North Pantanal wetland, Brazil. Initially, the dogs were examined, and, through a questionnaire, the risk factors were investigated. Blood samples were subjected to DNA extraction and PCR was performed to estimate the prevalence of E. canis infection. Results The molecular prevalence of E. canis infection in dogs was 42.5% and none of the studied variables were significantly associated with polymerase chain reaction (PCR) positivity (p > 0.05). Conclusion The high molecular prevalence demonstrates an increased transmission of the agent across the city. This also indicates that attention needs to be paid to E. canis infection and control measures should be introduced to prevent its transmission. The demographic and clinical risk factors commonly associated with E. canis infection in this study were not associated with PCR positivity.
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Affiliation(s)
- Mariana Elisa Pereira
- Postgraduate Program in Veterinary Science, Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
| | - Darlan Henrique Canei
- Postgraduate Program in Veterinary Science, Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
| | - Matheus Roberto Carvalho
- Postgraduate Program in Veterinary Science, Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
| | - Álvaro Felipe de Lima Ruy Dias
- Postgraduate Program in Veterinary Science, Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
| | | | - Luciano Nakazato
- Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
| | - Valéria Régia Franco Sousa
- Faculty of Veterinary Medicine, Federal University of Mato Grosso, Avenue Fernando Correa da Costa, Boa Esperança, Cuiabá, Mato Grosso, Brazil
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Gallego MM, Triana-Chávez O, Mejia-Jaramillo AM, Jaimes-Dueñez J. Molecular characterization of Ehrlichia canis and Babesia vogeli reveals multiple genogroups associated with clinical traits in dogs from urban areas of Colombia. Ticks Tick Borne Dis 2023; 14:102111. [PMID: 36574738 DOI: 10.1016/j.ttbdis.2022.102111] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 12/04/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Ehrlichia canis and Babesia vogeli are vector-borne pathogens that infect blood cells and produce the diseases Canine Monocytic Ehrlichiosis (CME) and Babesiosis in dogs. Considering the lack of studies on these pathogens in Colombia, this study aims to determine the molecular prevalence and genetic characterization of E. canis and Babesia spp., in dogs from the Metropolitan Area of Bucaramanga (MAB), Santander, a region with one of the greatest pet densities in Colombia. One hundred eighty-five dogs were surveyed and analyzed through molecular, clinical, and hematological approaches. The molecular detection of E. canis and Babesia spp., was performed by conventional PCR targeting the dsb and 18S rRNA genes, respectively. To identify genogroups, E. canis positive samples underwent a hemi-nested PCR of the trp36 gene, and the PCR products were subsequently sequenced. Molecular analyses showed a prevalence of 13% (24/185; CI 95%, 8.1 - 18.0%) and 1.09% (2/185; CI 95,% -0.43 - 2.6%) for E. canis and B. vogeli respectively, as well as the presence of the genogroups US (USA), BR (Brazil), and CR (Costa Rica), in 62.5, 16.6, and 16.6% of E. canis positive samples, respectively. Values of hematocrit, hemoglobin, platelets, erythrocytes, white blood cell (WBC) count, lymphocytes, and eosinophils showed significant differences between animals infected with the different genogroups of E. canis (p< 0.05). In contrast, hematocrit values, hemoglobin, platelets, red blood cells, and creatine kinase MB isoenzyme (CK-MB) were lower in B. vogeli positive animals. Statistical analysis indicated that E. canis infection was associated with specific socioeconomic sectors as well as with some household features (p< 0.05). In conclusion, our results present evidence of the circulation of multiple genogroups of E. canis in the MAB, which is associated with different geographical origins and clinical traits. Epidemiological analyses suggest a need to increase molecular surveillance and prevention campaigns especially in lower socioeconomic sectors.
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Affiliation(s)
- Mariana Marin Gallego
- Grupo Biología y Control de Enfermedades Infecciosas - BCEI, Universidad de Antioquia, Medellín, Colombia
| | - Omar Triana-Chávez
- Grupo Biología y Control de Enfermedades Infecciosas - BCEI, Universidad de Antioquia, Medellín, Colombia
| | - Ana Maria Mejia-Jaramillo
- Grupo Biología y Control de Enfermedades Infecciosas - BCEI, Universidad de Antioquia, Medellín, Colombia
| | - Jeiczon Jaimes-Dueñez
- Grupo de Investigación en Ciencias Animales GRICA, Facultad de Medicina Veterinaria y Zootecnia, Universidad Cooperativa de Colombia UCC, Calle 30 No. 33-51, Bucaramanga, Santander, Colombia.
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Poolsawat N, Nooroong P, Junsiri W, Watthanadirek-Wijidwong A, Srionrod N, Sangchuai S, Minsakorn S, Tazawa K, Anuracpreeda P. Ehrlichia canis: Molecular characterization and genetic diversity based on the p28 and trp36 genes. Res Vet Sci 2023; 155:88-102. [PMID: 36657265 DOI: 10.1016/j.rvsc.2022.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022]
Abstract
Ehrlichia canis is a common tick-borne intracellular pathogen causing canine monocytic ehrlichiosis (CME) in dogs worldwide. The aims of this study were to investigate the genetic diversity and antigenicity of E. canis based on the p28 and trp36 genes in dogs in Thailand. The E. canis p28 and trp36 genes were amplified by the polymerase chain reaction (PCR) and cloned for sequencing and bioinformatic analyses. 36% (44/120) of dog blood samples were positive for E. canis DNA consisting of p28 (31%, 14/44) and trp36 (69%, 30/44) genes with 792 and 882 bp of PCR products size, respectively. The E. canis TRP36 from all Thailand sequences exhibited encoded nine amino acids (TEDSVSAPA) with 11 copies of tandem repeats along the sequences. The phylogenetic trees of E. canis, using the p28 and trp36 genes, exhibited that the Thailand isolates fell into two clades and one clade with similarity ranging from 55.95 to 100% and 100%, respectively. The results of diversity analysis revealed 10 and 20 haplotypes of the p28 and trp 36 genes, respectively. The entropy analysis of the p28 and trp36 nucleic acid sequences showed 442 and 1321 high entropy peaks respectively, whereas those of the P28 and TRP36 amino acid sequences showed 477 and 388 high entropy peaks, respectively. For B-cell epitopes analysis, the conserved amino acid of P28 and TRP36 sequences has been also demonstrated. Therefore, the results could be utilized to improve the understanding of phylogenetic relationship, genetic diversity and antigenicity of E. canis Thailand isolates.
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Affiliation(s)
- Napassorn Poolsawat
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Pornpiroon Nooroong
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Witchuta Junsiri
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Amaya Watthanadirek-Wijidwong
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Nitipon Srionrod
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Siriphan Sangchuai
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand; Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sutthida Minsakorn
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Keiichiro Tazawa
- Worldwide Veterinary Service Thailand, Hang Dong, Chiang Mai 50230, Thailand
| | - Panat Anuracpreeda
- Parasitology Research Laboratory (PRL), Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom 73170, Thailand.
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Lu M, Meng C, Gao X, Sun Y, Zhang J, Tang G, Li Y, Li M, Zhou G, Wang W, Li K. Diversity of Rickettsiales in Rhipicephalus microplus Ticks Collected in Domestic Ruminants in Guizhou Province, China. Pathogens 2022; 11:pathogens11101108. [PMID: 36297165 PMCID: PMC9607482 DOI: 10.3390/pathogens11101108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Rhipicephalus microplus ticks are vectors for multiple pathogens infecting animals and humans. Although the medical importance of R. microplus has been well-recognized and studied in most areas of China, the occurrence of tick-borne Rickettsiales has seldom been investigated in Guizhou Province, Southwest China. In this study, we collected 276 R. microplus ticks from cattle (209 ticks) and goats (67 ticks) in three locations of Guizhou Province. The Rickettsia, Anaplasma, and Ehrlichia were detected by targeting the 16S rRNA gene and were further characterized by amplifying the key genes. One Rickettsia (Ca. Rickettsia jingxinensis), three Ehrlichia (E. canis, E. minasensis, Ehrlichia sp.), and four Anaplasma (A. capra, A. ovis, A. marginale, Ca. Anaplasma boleense) species were detected, and their gltA and groEL genes were recovered. Candidatus Rickettsia jingxinensis, a spotted fever group of Rickettsia, was detected in a high proportion of the tested ticks (88.89%, 100%, and 100% in ticks from the three locations, respectively), suggesting the possibility that animals may be exposed to this type of Rickettsia. All the 16S, gltA, groEL, and ompA sequences of these strains are 100% identical to strains reported in Ngawa, Sichuan Province. E. minasensis, A. marginale, and Candidatus Anaplasma boleense are known to infect livestock such as cattle. The potential effects on local husbandry should be considered. Notably, E. canis, A. ovis, and A. capra have been reported to infect humans. The relatively high positive rates in Qianxinan (20.99%, 9.88%, and 4.94%, respectively) may indicate the potential risk to local populations. Furthermore, the genetic analysis indicated that the E. minasensis strains in this study may represent a variant or recombinant. Our results indicated the extensive diversity of Rickettsiales in R. microplus ticks from Guizhou Province. The possible occurrence of rickettsiosis, ehrlichiosis, and anaplasmosis in humans and domestic animals in this area should be further considered and investigated.
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Affiliation(s)
- Miao Lu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping District, Beijing 102206, China
| | - Chao Meng
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Xiang Gao
- Tongzhou Center for Disease Control and Prevention, Tongzhou District, Beijing 101100, China
| | - Yue Sun
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Jun Zhang
- Guizhou Center for Disease Control and Prevention, Guiyang 550004, China
| | - Guangpeng Tang
- Liuzhi Center for Disease Control and Prevention, Liupanshui 553400, China
| | - Yilin Li
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Mengyao Li
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Guangyi Zhou
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Wen Wang
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China
| | - Kun Li
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping District, Beijing 102206, China
- Tianjin Key Laboratory of Food and Biotechnology, Tianjin University of Commerce, Beichen District, Tianjin 300134, China
- Correspondence:
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Navarrete MG, Hodžić A, Corona-González B, Cordeiro MD, da Silva CB, Báez LC, Obregón D, de Aguiar DM, da Silva Campos AN, Taques ÍIGG, Wu-Chuang A, López ER, Piloto-Sardiñas E, Abuin-Denis L, da Fonseca AH, Cabezas-Cruz A. Novel Ehrlichia canis genogroup in dogs with canine ehrlichiosis in Cuba. Parasit Vectors 2022; 15:295. [PMID: 35999566 PMCID: PMC9396871 DOI: 10.1186/s13071-022-05426-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/05/2022] [Indexed: 11/22/2022] Open
Abstract
Background Canine monocytic ehrlichiosis (CME) is caused by the tick-borne pathogen Ehrlichia canis, an obligate intracellular Gram-negative bacterium of the family Anaplasmataceae with tropism for canine monocytes and macrophages. The trp36 gene, which encodes for the major immunoreactive protein TRP36 in E. canis, has been successfully used to characterize the genetic diversity of this pathogen in different regions of the world. Based on trp36 sequence analysis, four E. canis genogroups, United States (US), Taiwan (TWN), Brazil (BR) and Costa Rica (CR), have been identified. The aim of this study was to characterize the genetic diversity of E. canis in Cuba based on the trp36 gene. Methods Whole blood samples (n = 8) were collected from dogs found to be infested with the tick vector Rhipicephalus sanguineus sensu lato (s.l.) and/or presenting clinical signs and symptoms of CME. Total DNA was extracted from the blood samples and trp36 fragments were amplified by PCR. Nucleotide and protein sequences were compared using alignments and phylogenetic analysis. Results Four of the trp36 sequences obtained (n = 8) fall within the phylogenetic cluster grouping the US genogroup E. canis strains. The other E. canis trp36 sequences formed a separate and well-supported clade (94% bootstrap value) that is phylogenetically distant from the other major groups and thus represents a new genogroup, herein designated as the ‘Cuba (CUB) genogroup’. Notably, dogs infected with the CUB genogroup presented frequent hemorrhagic lesions. Conclusions The results of this study suggest that genetic diversification of E. canis in Cuba is associated with the emergence of E. canis strains with increased virulence.
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Affiliation(s)
- Maylin González Navarrete
- Department of Preventive Veterinary Medicine, Agrarian University of Havana, Carretera de Tapaste y Autopista Nacional, Km 23 1/2, 32700, San José de las Lajas, Mayabeque, Cuba
| | - Adnan Hodžić
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Belkis Corona-González
- Direction of Animal Health, National Center for Animal and Plant Health, Carretera de Tapaste y Autopista Nacional, Apartado Postal 10, 32700, San José de las Lajas, Mayabeque, Cuba
| | - Matheus Dias Cordeiro
- Department of Animal Parasitology, Federal Rural University of Rio de Janeiro (UFRRJ), BR 465, Km 7, Seropedica, RJ, 23890000, Brazil
| | - Claudia Bezerra da Silva
- Department of Animal Parasitology, Federal Rural University of Rio de Janeiro (UFRRJ), BR 465, Km 7, Seropedica, RJ, 23890000, Brazil
| | - Liani Coronado Báez
- Direction of Animal Health, National Center for Animal and Plant Health, Carretera de Tapaste y Autopista Nacional, Apartado Postal 10, 32700, San José de las Lajas, Mayabeque, Cuba
| | - Dasiel Obregón
- School of Environmental Sciences, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Daniel Moura de Aguiar
- Virology and Rickettsioses Laboratory, Hospital Veterinário da Facultade de Medicina Veterinária, Federal University of Mato Grosso State, Cuiabá, Mato Grosso, Brazil
| | - Amanda Noeli da Silva Campos
- Virology and Rickettsioses Laboratory, Hospital Veterinário da Facultade de Medicina Veterinária, Federal University of Mato Grosso State, Cuiabá, Mato Grosso, Brazil
| | - Ísis Indaiara Gonçalves Granjeiro Taques
- Virology and Rickettsioses Laboratory, Hospital Veterinário da Facultade de Medicina Veterinária, Federal University of Mato Grosso State, Cuiabá, Mato Grosso, Brazil
| | - Alejandra Wu-Chuang
- UMR BIPAR, INRAE, ANSES, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 94700, Maisons-Alfort, France
| | - Eugenio Roque López
- Department of Preventive Veterinary Medicine, Agrarian University of Havana, Carretera de Tapaste y Autopista Nacional, Km 23 1/2, 32700, San José de las Lajas, Mayabeque, Cuba
| | - Elianne Piloto-Sardiñas
- Direction of Animal Health, National Center for Animal and Plant Health, Carretera de Tapaste y Autopista Nacional, Apartado Postal 10, 32700, San José de las Lajas, Mayabeque, Cuba
| | - Lianet Abuin-Denis
- Animal Biotechnology Department, Center for Genetic Engineering and Biotechnology, Avenue 31 between 158 and 190, P.O. Box 6162, 10600, Havana, Cuba
| | - Adivaldo Henrique da Fonseca
- Department of Epidemiology and Public Health, Federal Rural University of Rio de Janeiro (UFRRJ), BR 465, Km 7, Seropedica, RJ, 23890000, Brazil
| | - Alejandro Cabezas-Cruz
- UMR BIPAR, INRAE, ANSES, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 94700, Maisons-Alfort, France.
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Ramos RAN, Giannelli A, Ubirajara-Filho CRC, Ramos CADN, Betbder D, Bezerra-Santos MA, Dantas-Torres F, Alves LC, Otranto D. Vector-borne pathogens in dogs from areas where leishmaniosis is endemic. Vet Parasitol Reg Stud Reports 2022; 32:100746. [PMID: 35725105 DOI: 10.1016/j.vprsr.2022.100746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/30/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Many vector-borne pathogens (VBPs), including Ehrlichia canis and Dirofilaria immitis, may infect simultaneously dogs in areas where Leishmania infantum is endemic, especially in the tropics, where highly abundant arthropod vectors thrive. The aim of this study was to compare the frequency of simultaneous VBPs infection in Leishmania-positive and Leishmania-negative dogs. Animals enrolled in this study were divided in two groups (G1 and G2), G1 being comprised of L. infantum-infected dogs (n = 58) and the G2 of L. infantum-negative dogs (n = 58). Blood samples were screened using a qualitative ELISA test (SNAP® 4Dx® Plus, IDEXX Laboratory, Westbrook, Maine, USA) for detection of antibodies against Anaplasma spp., Borrelia burgdorferi sensu lato, Ehrlichia spp. and antigens of Dirofilaria immitis. Overall, 89.7% (52/58) of dogs from G1 were positive for at least one VBP, whereas 50.0% (29/58) of dogs from G2 dogs were positive as well. The highest positivity was to E. canis (67.2%; 78/116), followed by D. immitis (12.9%; 15/116), and A. platys (6.0%; 7/116). None of the animals scored positive for B. burgdorferi s.l.. There was a statistically significant difference for the simultaneous positivity to E. canis plus D. immitis between groups. Furthermore, 43.1% (25/58) of dogs from G1 were infested by ectoparasites (ticks, fleas, or both), compared to 20.6% (12/58) of dogs from G2. In conclusion, Leishmania-infected dogs were more co-infected with other VBPs than Leishmania-negative animals. Therefore, it is pivotal to increase the awareness of veterinarian and dog owners about the importance of testing Leishmania-infected dogs for other VBPs, as this may directly affect treatment decisions and management.
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Affiliation(s)
| | | | - Carlos Roberto Cruz Ubirajara-Filho
- Laboratory of Parasitology, Federal University of the Agreste of Pernambuco, Garanhuns, Brazil; Graduate Program in Animal Biosciences, Federal Rural University of Pernambuco, Recife, Brazil
| | | | | | | | | | - Leucio Câmara Alves
- Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, Brazil
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy
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9
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Comparative genomic analysis of the first Ehrlichia canis detections in Australia. Ticks Tick Borne Dis 2022; 13:101909. [DOI: 10.1016/j.ttbdis.2022.101909] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/20/2022] [Accepted: 01/23/2022] [Indexed: 01/11/2023]
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10
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Secrets of the Astute Red Fox (Vulpes vulpes, Linnaeus, 1758): An Inside-Ecosystem Secret Agent Serving One Health. ENVIRONMENTS 2021. [DOI: 10.3390/environments8100103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An ecosystem’s health is based on a delicate balance between human, nonhuman animal, and environmental health. Any factor that leads to an imbalance in one of the components results in disease. There are several bioindicators that allow us to evaluate the status of ecosystems. The red fox (Vulpes vulpes, Linnaeus, 1758) has the widest world distribution among mammals. It is highly adaptable, lives in rural and urban areas, and has a greatly diverse diet. Being susceptible to environmental pollution and zoonotic agents, red foxes may act as sentinels to detect environmental contaminants, climatic changes and to prevent and control outbreaks of emerging or re-emerging zoonosis. This paper aims to compile the latest information that is related to the red fox as a sentinel of human, animal, and environmental health.
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