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Molecular Detection and Phylogeny of Tick-Borne Pathogens in Ticks Collected from Dogs in the Republic of Korea. Pathogens 2021; 10:pathogens10050613. [PMID: 34067827 PMCID: PMC8157029 DOI: 10.3390/pathogens10050613] [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: 04/15/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 11/16/2022] Open
Abstract
Ticks are important vectors of various pathogens that result in clinical illnesses in humans and domestic and wild animals. Information regarding tick infestations and pathogens transmitted by ticks is important for the identification and prevention of disease. This study was a large-scale investigation of ticks collected from dogs and their associated environments in the Republic of Korea (ROK). It included detecting six prevalent tick-borne pathogens (Anaplasma spp., A. platys, Borrelia spp., Babesia gibsoni, Ehrlichia canis, and E. chaffeensis). A total of 2293 ticks (1110 pools) were collected. Haemaphysalis longicornis (98.60%) was the most frequently collected tick species, followed by Ixodes nipponensis (0.96%) and H. flava (0.44%). Anaplasma spp. (24/1110 tick pools; 2.16%) and Borrelia spp. (4/1110 tick pools; 0.36%) were detected. The phylogenetic analyses using 16S rRNA genes revealed that the Anaplasma spp. detected in this study were closely associated with A. phagocytophilum reported in humans and rodents in the ROK. Borrelia spp. showed phylogenetic relationships with B. theileri and B. miyamotoi in ticks and humans in Mali and Russia. These results demonstrate the importance of tick-borne disease surveillance and control in dogs in the ROK.
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Yuasa Y, Tsai YL, Chang CC, Hsu TH, Chou CC. The prevalence of Anaplasma platys and a potential novel Anaplasma species exceed that of Ehrlichia canis in asymptomatic dogs and Rhipicephalus sanguineus in Taiwan. J Vet Med Sci 2017; 79:1494-1502. [PMID: 28781347 PMCID: PMC5627318 DOI: 10.1292/jvms.17-0224] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Canine anaplasmosis is regarded as an infection by Anaplasma platys rather than zoonotic Anaplasma phagocytophilum in subtropical areas based on the assumption that the common dog tick species is Rhipicephalus sanguineus, which transmits E. canis and presumably A. platys. We investigated asymptomatic dogs and dog ticks from 16 communities in Nantou County, Taiwan to identify common dog tick species and to determine the prevalence of Anaplasma and Ehrlichia spp. Of total 175 canine blood samples and 315 ticks, including 306 R. sanguineus and 9 Haemaphysalis hystricis, 15 dogs and 3 R. sanguineus ticks were positive for E. canis, while 47 dogs and 71 R. sanguineus ticks were positive for A. platys, via nested PCR for 16S rDNA and DNA sequencing of selected positive amplicons. However, among the dogs and ticks that were positive to A. platys 16S rDNA, only 20 dogs and 11 ticks were positive to nested PCR for A. platys groEL gene. These results revealed the importance of searching for novel Anaplasma spp. closely related to A. platys in dogs and ticks. Seropositivity to a commercial immunochromatographic test SNAP 4Dx Anaplasma sp. was not significantly associated with PCR positivity for A. platys but with infestation by ticks carrying A. platys (P<0.05). Accordingly, R. sanguineus may be involved in transmission of A. platys but may not act as a reservoir of E. canis and PCR results for 16S rDNA could be a problematic diagnostic index for A. platys infection.
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Affiliation(s)
- Yumi Yuasa
- Department of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan, R.O.C
| | - Yi-Lun Tsai
- Department of Veterinary Medicine, National Pingtung University of Science and Technology, 1 Xuefu Road, Pingtung, Taiwan, R.O.C
| | - Chao-Chin Chang
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan, R.O.C
| | - Tien-Huan Hsu
- Department of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan, R.O.C
| | - Chi-Chung Chou
- Department of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, Taiwan, R.O.C
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Sparagano OAE, de Vos AP, Paoletti B, Cammà C, de Santis P, Otranto D, Giangaspero A. Molecular Detection of Anaplasma Platys in Dogs Using Polymerase Chain Reaction and Reverse Line Blot Hybridization. J Vet Diagn Invest 2016; 15:527-34. [PMID: 14667015 DOI: 10.1177/104063870301500604] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Several polymerase chain reactions (PCRs) and a reverse line blot hybridization (RLB) method were used to identify Anaplasma platys in dogs held in a kennel in Italy. Whereas PCR techniques confirmed the presence of A. platys, the RLB method not only correlated the results obtained by PCR but also ruled out the presence of other species such as Ehrlichia canis or E. chaffeensis. There was no correlation between infection status and age or breed of the dogs. Polymerase chain reaction performed on the Rhipicephalus sanguineus ticks collected from those dogs showed that they were also infected with A. platys. Sequences obtained from some samples and compared with those within the GenBank also confirmed the presence of A. platys.
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Affiliation(s)
- Olivier A E Sparagano
- School of Agriculture, Food and Rural Development, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
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Lai TH, Parraga ME, Alvarez E, Rikihisa Y. Anaplasma platys Immunoblot Test Using Major Surface Antigens. Vector Borne Zoonotic Dis 2016; 16:581-7. [PMID: 27327629 DOI: 10.1089/vbz.2016.1964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Anaplasma platys is an uncultivable tick-borne obligatory intracellular bacterium, which is known to infect platelets of dogs. A. platys causes infectious canine cyclic thrombocytopenia in subtropical and tropical regions throughout the world. Several cases of human infection with A. platys infection have also been reported. However, seroprevalence of A. platys exposure and infection has not been determined in most of the regions, in part, due to lack of a simple and reliable assay method. Furthermore, A. platys antigens recognized by dogs are unknown. We previously sequenced gene encoding A. platys major outer membrane proteins P44 and Omp-1X. In the present study, we obtained purified recombinant A. platys P44 and Omp-1X proteins, and using them as antigens in immunoblotting examined seroreactivity in dogs. Of 34 specimens from Venezuela where A. platys infection was previously reported, 25 specimens (73.5%) reacted to rAplP44 and/or rAplOMP-1X. Neither Anaplasma phagocytophilum-seropositive (N = 10) nor A. phagocytophilum-seronegative canine specimens (N = 10) from the geographic regions where A. platys infection has never been reported, reacted rAplP44 or rAplOMP-1X. The result indicates a high A. platys seroprevalence rate in tested dogs from Venezuela and suggests that the immunoblot analysis based on recombinant A. platys major outer membrane proteins can provide a simple and defined tool to enlighten the prevalence of A. platys infection.
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Affiliation(s)
- Tzung-Huei Lai
- 1 Department of Veterinary Biosciences, The Ohio State University , Columbus, Ohio
| | - Maria E Parraga
- 2 Departamento Médico-Quirúrgico, Facultad de Ciencias Veterinarias, Universidad Central de Venezuela , Maracay, Estado Aragua, Venezuela
| | - Elizabeth Alvarez
- 3 Veterinary Medical Teaching Hospital, University of Wisconsin-Madison , Madison, Wisconsin
| | - Yasuko Rikihisa
- 1 Department of Veterinary Biosciences, The Ohio State University , Columbus, Ohio
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Allison RW, Little SE. Diagnosis of rickettsial diseases in dogs and cats. Vet Clin Pathol 2013; 42:127-44. [DOI: 10.1111/vcp.12040] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robin W. Allison
- Department of Veterinary Pathobiology; Center for Veterinary Health Sciences; Oklahoma State University; Stillwater; OK; USA
| | - Susan E. Little
- Department of Veterinary Pathobiology; Center for Veterinary Health Sciences; Oklahoma State University; Stillwater; OK; USA
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Cloning of the major outer membrane protein expression locus in Anaplasma platys and seroreactivity of a species-specific antigen. J Bacteriol 2011; 193:2924-30. [PMID: 21498646 DOI: 10.1128/jb.00082-11] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Anaplasma platys infects peripheral blood platelets and causes infectious cyclic thrombocytopenia in canines. The genes, proteins, and antigens of A. platys are largely unknown, and an antigen for serodiagnosis of A. platys has not yet been identified. In this study, we cloned the A. platys major outer membrane protein cluster, including the P44/Msp2 expression locus (p44ES/msp2ES) and outer membrane protein (OMP), using DNA isolated from the blood of four naturally infected dogs from Venezuela and Taiwan, Republic of China. A. platys p44ES is located within a 4-kb genomic region downstream from a putative transcriptional regulator, tr1, and a homolog of the Anaplasma phagocytophilum, identified here as A. platys omp-1X. The predicted molecular masses of the four mature A. platys P44ES proteins ranged from 43.3 to 43.5 kDa. Comparative analyses of the deduced amino acid sequences of Tr1, OMP-1X, and P44/Msp2 proteins from A. platys with those from A. phagocytophilum showed sequence identities of 86.4% for Tr1, 45.9% to 46.3% for OMP-1X, and 55.0% to 56.9% for P44/Msp2. Comparison between A. platys and Anaplasma marginale proteins showed sequence identities of 73.1% for Tr1/Tr, 39.8% for OMP-1X/OMP1, and 41.5% to 42.1% for P44/Msp2. A synthetic OMP-1X peptide was shown to react with A. platys-positive sera but not with A. platys-negative sera or A. phagocytophilum-positive sera. Together, determination of the genomic locus of A. platys outer membrane proteins not only contributes to the fundamental understanding of this enigmatic pathogen but also helps in developing A. platys-specific PCR and serodiagnosis.
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Lee MJ, Yu DH, Yoon JS, Li YH, Lee JH, Chae JS, Park J. Epidemiologic and Clinical Surveys in Dogs Infected withBabesia gibsoniin South Korea. Vector Borne Zoonotic Dis 2009; 9:681-6. [DOI: 10.1089/vbz.2008.0116] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mi-Jin Lee
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
| | - Do-Hyeon Yu
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
| | - Ji-Seon Yoon
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
| | - Ying-Hua Li
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
| | - Jong-Hyeon Lee
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
| | - Joon-Seok Chae
- College of Veterinary Medicine, Seoul National University, Seoul Korea
| | - Jinho Park
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeonju, Jeonbuk 561-756 Chonbuk National University, Jeonju, Jeonbuk, Korea
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Lee M, Yu D, Yoon J, Li Y, Lee J, Park J. Natural co-infection of Ehrlichia chaffeensis and Anaplasma bovis in a deer in South Korea. J Vet Med Sci 2009; 71:101-3. [PMID: 19194084 DOI: 10.1292/jvms.71.101] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Both ehrlichioses and anaplasmoses are zoonotic, fatal infectious diseases that caused by ticks. White-tailed deer (Odocoileus virginianus) are important hosts for Ehrlichia chaffeensis, Anaplasma phagocytophilum and Anaplasma-like organisms. In the present study, an evaluation of infection with tick-borne pathogens was conducted using a PCR assay on the blood of a deer that expressed anorexia and decreased activity. The results of the PCR assay revealed natural co-infection of E. chaffeensis and A. bovis in the deer. This indicates that deer may be a natural reservoir of both E. chaffeensis and A. bovis in South Korea.
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Affiliation(s)
- Mijin Lee
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonbuk National University, Jeonju, Jeonbuk, South Korea
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Chae JS, Yu DH, Shringi S, Klein TA, Kim HC, Chong ST, Lee IY, Foley J. Microbial pathogens in ticks, rodents and a shrew in northern Gyeonggi-do near the DMZ, Korea. J Vet Sci 2008; 9:285-93. [PMID: 18716449 PMCID: PMC2811841 DOI: 10.4142/jvs.2008.9.3.285] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A total of 1,618 ticks [420 individual (adults) and pooled (larvae and nymphs) samples], 369 rodents (Apodemus agrarius, Rattus norvegicus, Tscherskia triton, Mus musculus, and Myodes regulus), and 34 shrews (Crocidura lasiura) that were collected in northern Gyeonggi-do near the Demilitarized Zone (DMZ) of Korea during 2004-2005, were assayed by PCR for selected zoonotic pathogens. From a total of 420 individual and pooled tick DNA samples, Anaplasma (A.) phagocytophilum (16), A. platys (16), Ehrlichia (E.) chaffeensis (63), Borrelia burgdorferi (16), and Rickettsia spp. (198) were detected using species-specific PCR assays. Out of 403 spleens from rodents and shrews, A. phagocytophilum (20), A. platys (34), E. chaffeensis (127), and Bartonella spp. (24) were detected with species-specific PCR assays. These results suggest that fevers of unknown causes in humans and animals in Korea should be evaluated for infections by these vector-borne microbial pathogens.
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Affiliation(s)
- Joon Seok Chae
- Department of Internal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea.
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Opinion of the Scientific Panel on Animal Health and Welfare (AHAW) on an assessment of the risk of tick introduction into UK, Republic of Ireland, and Malta as a consequence of abandoning National rules. EFSA J 2007. [DOI: 10.2903/j.efsa.2007.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Kim CM, Yi YH, Yu DH, Lee MJ, Cho MR, Desai AR, Shringi S, Klein TA, Kim HC, Song JW, Baek LJ, Chong ST, O'guinn ML, Lee JS, Lee IY, Park JH, Foley J, Chae JS. Tick-borne rickettsial pathogens in ticks and small mammals in Korea. Appl Environ Microbiol 2006; 72:5766-76. [PMID: 16957192 PMCID: PMC1563606 DOI: 10.1128/aem.00431-06] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In order to investigate the prevalence of tick-borne infectious agents among ticks, ticks comprising five species from two genera (Hemaphysalis spp. and Ixodes spp.) were screened using molecular techniques. Ticks (3,135) were collected from small wild-caught mammals or by dragging/flagging in the Republic of Korea (ROK) and were pooled into a total of 1,638 samples (1 to 27 ticks per pool). From the 1,638 tick samples, species-specific fragments of Anaplasma phagocytophilum (1 sample), Anaplasma platys (52 samples), Ehrlichia chaffeensis (29 samples), Ehrlichia ewingii (2 samples), Ehrlichia canis (18 samples), and Rickettsia rickettsii (28 samples) were amplified by PCR assay. Twenty-one pooled and individual tick samples had mixed infections of two (15 samples) or three (6 samples) pathogens. In addition, 424 spleen samples from small captured mammals (389 rodents, 33 insectivores, and 2 weasels) were screened for selected zoonotic pathogens. Species-specific DNA fragments of A. phagocytophilum (110 samples), A. platys (68 samples), E. chaffeensis (8 samples), E. ewingii (26 samples), E. canis (51 samples), and Rickettsia sp. (22 samples) were amplified by PCR assay. One hundred thirty small mammals had single infections, while 4, 14, and 21 striped field mice (Apodemus agrarius) had mixed infections of four, three, and two pathogens, respectively. Phylogenetic analysis based on nucleotide sequence comparison also revealed that Korean strains of E. chaffeensis clustered closely with those from China and the United States, while the Rickettsia (rOmpA) sequences clustered within a clade together with a Chinese strain. These results suggest that these agents should be considered in differential diagnosis while examining cases of acute febrile illnesses in humans as well as animals in the ROK.
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Affiliation(s)
- Chul-Min Kim
- Bio-Safety Research Institute and College of Veterinary Medicine, Chonbuk National University, Jeonju 561-756, Korea
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Brown GK, Canfield PJ, Dunstan RH, Roberts TK, Martin AR, Brown CS, Irving R. Detection of Anaplasma platys and Babesia canis vogeli and their impact on platelet numbers in free-roaming dogs associated with remote Aboriginal communities in Australia. Aust Vet J 2006; 84:321-5. [PMID: 16958629 DOI: 10.1111/j.1751-0813.2006.00029.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To detect Anaplasma platys and Babesia canis vogeli infection, using polymerase chain reaction (PCR)-based assays, in free-roaming dogs associated with eight Aboriginal communities in remote areas of Australia and to determine the impact of infection through the assessment of platelet numbers. PROCEDURES Blood samples from 215 dogs were screened by PCR for A platys and B canis vogeli using established genus-specific DNA primers for the 16S and 18S rRNA genes respectively. Both A platys DNA and B canis vogeli DNA were confirmed from the screening PCR either by sequencing or by the use of species-specific primers. Peripheral blood films from 92 of the 215 dogs were used to estimate platelet numbers through an indirect method. RESULTS Of 215 dogs, 69 (32%) were positive for A platys, 22 (10%) for B canis vogeli and 24 (11%) for both. The two organisms were detected singularly and as coinfection in all communities. For the 92 dogs in which peripheral blood films were examined, the mean estimated platelet counts for the non-infected dogs was 318 x 10(9)/L, those infected with A platys alone was 256 x 10(9)/L, those with B canis vogeli alone was 276 x 10(9)/L and those infected with both parasites was 169 x 10(9)/L. In young dogs, infection produced significantly decreased mean platelet counts when compared to uninfected dogs. Thrombocytopenia (< 200 x 10(9)/L) was detected in 18 (51%) dogs infected with A platys alone, 3 (33%) dogs infected with B canis vogeli alone, 13 (72%) dogs coinfected, and 8 (27%) uninfected dogs. CONCLUSIONS A platys and B canis vogeli infection, either singularly or together, was widespread in free roaming dogs associated with remote Aboriginal communities in the Northern Territory and north-western New South Wales. Moreover, both A platys and B canis vogeli infections were associated with a reduction in mean platelet numbers in dog populations, particularly in young dogs. The fact that 51% of dogs infected with A platys alone and 72% dogs coinfected were thrombocytopenic compared to 27% of uninfected dogs suggests that the organism alone or in combination with B canis vogeli has the potential to cause thrombocytopenia and perhaps contribute to a clinical bleeding disorder in infected dogs.
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Affiliation(s)
- G K Brown
- Discipline of Biological Sciences, School of Environmental and Life Sciences, University of Newcastle, Callaghan NSW 2308, Australia
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de la Fuente J, Torina A, Naranjo V, Nicosia S, Alongi A, La Mantia F, Kocan KM. Molecular characterization of Anaplasma platys strains from dogs in Sicily, Italy. BMC Vet Res 2006; 2:24. [PMID: 16872489 PMCID: PMC1550391 DOI: 10.1186/1746-6148-2-24] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Accepted: 07/26/2006] [Indexed: 11/23/2022] Open
Abstract
Background The genetic diversity of Anaplasma platys (Rickettsiales: Anaplasmataceae) strains is currently poorly defined. The present study was designed to characterize A. patys strains in dogs from Palermo, Sicily, Italy, using a combination of PCR and sequence analysis of the 16S rDNA, heat shock operon groESL and citrate synthase (gltA) genes. Results Blood was collected from 344 dogs (111 pet dogs, 122 pound dogs and 111 hunting dogs) during 2003–2005 in the Province of Palermo, Sicily, Italy. The prevalence of A. platys in dogs in Sicily, as demonstrated by PCR and sequence analysis of the 16S rDNA, groESL and gltA genes, was 4%. None of the samples were positive for A. marginale, A. centrale, A. ovis and A. phagocytophilum DNA. Three different gltA genotypes of A. platys were identified in dogs from Sicily. Two of the gltA sequences of Sicilian A. platys strains were different from sequences reported previously. However, one of the gltA, 16S rDNA and groESL sequences were identical to the sequence of A. platys strains from other regions of the world characterized previously. Conclusion At least three different strains of A. platys were identified in dogs from Sicily by PCR and sequence analyses of the 16S rDNA, groESL and gltA genes. The results reported herein suggested that genetic diversity of A. platys strains may be similar to A. ovis, but lower than the diversity reported for A. marginale and A. phagocytophilum. This lower genetic diversity may have resulted from restricted movement of infected hosts compared to A. marginale-infected cattle and/or the limited host range of A. ovis and A. platys as compared with A. phagocytophilum. These results expand our knowledge about A. platys and encourage further research for analysis of the genetic variation of A. platys strains worldwide.
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Affiliation(s)
- José de la Fuente
- Department of Veterinary Pathobiology, College of Veterinary Medicine, 250 McElroy Hall, Oklahoma State University, Stillwater, OK 74078, USA
- Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071 Ciudad Real, Spain
| | - Alessandra Torina
- Istituto Zooprofilattico Sperimentale della Sicilia, Via G. Marinuzzi n°3, 90129 Palermo, Italy
| | - Victoria Naranjo
- Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13071 Ciudad Real, Spain
| | - Silviane Nicosia
- Istituto Zooprofilattico Sperimentale della Sicilia, Via G. Marinuzzi n°3, 90129 Palermo, Italy
| | - Angelina Alongi
- Istituto Zooprofilattico Sperimentale della Sicilia, Via G. Marinuzzi n°3, 90129 Palermo, Italy
| | - Francesco La Mantia
- Istituto Zooprofilattico Sperimentale della Sicilia, Via G. Marinuzzi n°3, 90129 Palermo, Italy
| | - Katherine M Kocan
- Department of Veterinary Pathobiology, College of Veterinary Medicine, 250 McElroy Hall, Oklahoma State University, Stillwater, OK 74078, USA
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Aguirre E, Tesouro MA, Ruiz L, Amusategui I, Sainz A. Genetic characterization of Anaplasma (Ehrlichia) platys in dogs in Spain. ACTA ACUST UNITED AC 2006; 53:197-200. [PMID: 16629989 DOI: 10.1111/j.1439-0450.2006.00937.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper reports the first genetic characterization of Anaplasma (Ehrlichia) platys in Spain from a naturally infected dog. The dog presented clinical signs compatible with canine ehrlichiosis. After DNA extraction and PCR amplification, 16S rRNA gene and citrate synthase gene ( gltA) of this agent were amplified. The GenBank accession number for the nucleotide sequence of the 16S rRNA gene of this strain is AY530806. The A. platys strains registered in France and Japan showed the highest similarity to the 16S rRNA gene sequence obtained from the Spanish strain. In the amplification of the gltA gene, a 1443 bp fragment was obtained, and three nucleotide differences were detected in comparison with other strains sequences. These data confirm the presence of A. platys in a dog showing clinical signs compatible with ehrlichiosis in Spain.
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Affiliation(s)
- E Aguirre
- Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
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Munderloh UG, Tate CM, Lynch MJ, Howerth EW, Kurtti TJ, Davidson WR. Isolation of an Anaplasma sp. organism from white-tailed deer by tick cell culture. J Clin Microbiol 2003; 41:4328-35. [PMID: 12958265 PMCID: PMC193820 DOI: 10.1128/jcm.41.9.4328-4335.2003] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We used tick cell culture to isolate a bacterium previously referred to as the "white-tailed deer (WTD) agent" from two captive fawns inoculated with blood from wild WTD (Odocoileus virginianus). Buffy coat cells were added to ISE6 tick cell cultures and incubated at 34 degrees C, and 8 days later, Anaplasma-like inclusions were demonstrated in Giemsa-stained culture samples. The microbes became established and could be continuously passaged in tick cells. The identity of a culture isolate designated WTD76 was verified as the WTD agent by using specific PCR primers and by DNA sequencing. Comparison with sequences available in GenBank indicated that the isolate was most closely related first to Anaplasma platys and second to Anaplasma phagocytophilum, supporting its placement in the genus Anaplasma. Transmission electron microscopy of this Anaplasma sp. organism in tick cell cultures revealed large inclusions filled with pleomorphic and rod-shaped bacteria. Tick cells infected with the Anaplasma sp. organism were used to successfully infect a naive deer, thereby proving the infectivity of the isolate for deer.
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Affiliation(s)
- Ulrike G Munderloh
- Department of Entomology, University of Minnesota, St. Paul, Minnesota 55108, USA.
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Abstract
Ehrlichiosis is a term that has been used to describe infection with any of a number of related intracellular, vector-borne pathogens. A recent reclassification has resulted in the transfer of several species previously known as Ehrlichia to the genus Anaplasma or Neorickettsia. Ehrlichia and Anaplasma are transmitted largely through the bite of infected ticks, while vectors for Neorickettsia include trematodes and the intermediate hosts (i.e., fish, snails, and insects) involved in the trematode life cycle. Dogs (and cats) are susceptible to infection with several of these pathogens, and veterinarians should be aware of the similarities and differences between E canis and related infections. Pets with suggestive clinical signs and laboratory abnormalities may be started on doxycycline pending specific diagnostic testing. The veterinarian practicing in endemic areas must understand the implications and limitations of serologic and molecular testing to confirm a diagnosis. For animals in endemic areas, prevention of exposure to vectors can lessen the risk of disease for pets and might lessen the potential for animals to become carriers of disease for their human companions.
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Affiliation(s)
- Leah A Cohn
- College of Veterinary Medicine, University of Missouri-Columbia, 379 East Campus, Clydesdale Hall, Columbia, MO 65211, USA.
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17
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Arraga-Alvarado C, Palmar M, Parra O, Salas P. Ehrlichia platys (Anaplasma platys) in dogs from Maracaibo, Venezuela: an ultrastructural study of experimental and natural infections. Vet Pathol 2003; 40:149-56. [PMID: 12637754 DOI: 10.1354/vp.40-2-149] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Since 1982 Ehrlichia platys, now emended as Anaplasma platys, has been diagnosed in dogs from Maracaibo, Venezuela, using buffy coat smears stained with Dip Quick. Three dogs were inoculated with an A. platys strain. When parasitemia reached 60-97%, blood samples obtained from the inoculated dogs and from two naturally infected dogs were centrifuged to obtain platelet-rich plasma, which was mixed with 0.1% glutaraldehyde at 37 C for 10 minutes. Platelet pellets were fixed in 3% glutaraldehyde for 72 hours and processed for conventional transmission electron microscopy. Platelets contained pleomorphic organisms with a distinct double membrane that was not observed when the bodies were in a determinate developmental stage. There were 1-15 individual bodies included in a host cell vacuole. The organisms had an electron-lucent inner area, whereas the internal surface of their inner plasma membranes exhibited an electron-dense rough substance. In naturally infected dogs, organisms with different ultrastructural features were found inside the same platelet. Some organisms contained central dense material surrounded by a pale zone, which was in turn surrounded by a moderately dense peripheral area. Other organisms contained an eccentrically electron-dense material. The intravacuolar space appeared fully electron-lucent. Each organism usually exhibited inner fine strands. Empty structures displaying junctions with the vacuolar membrane were observed. Our results indicate that distinct ultrastructural characteristics are associated with different stages of A. platys development and may differ among A. platys strains.
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Affiliation(s)
- C Arraga-Alvarado
- Unidad de Investigacioned Clínicas-Facultad de Ciencias Veterinarias, Universidad del Zulia, Maracaibo, Venezuela.
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18
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Inokuma H, Fujii K, Matsumoto K, Okuda M, Nakagome K, Kosugi R, Hirakawa M, Onishi T. Demonstration of Anaplasma (Ehrlichia) platys inclusions in peripheral blood platelets of a dog in Japan. Vet Parasitol 2002; 110:145-52. [PMID: 12446100 DOI: 10.1016/s0304-4017(02)00289-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A free-roaming dog in Okinawa island showed Anaplasma (Ehrlichia) platys-like inclusions within the platelets of peripheral blood samples. The inclusions were positive in indirect fluorescence test with anti-A. phagocytophila serum. The platelet count of the dog was 170,000 microl(-1). The sequence analysis of the 16S rRNA, citrate synthase and heat shock protein genes of DNA from the infected platelets confirmed that the inclusions were A. platys. This is the first detection of A. platys inclusions in dogs in Japan.
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Affiliation(s)
- Hisashi Inokuma
- Laboratory of Veterinary Internal Medicine, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan.
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19
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Inokuma H, Fujii K, Okuda M, Onishi T, Beaufils JP, Raoult D, Brouqui P. Determination of the nucleotide sequences of heat shock operon groESL and the citrate synthase gene (gltA) of Anaplasma (Ehrlichia) platys for phylogenetic and diagnostic studies. CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY 2002; 9:1132-6. [PMID: 12204973 PMCID: PMC120055 DOI: 10.1128/cdli.9.5.1132-1136.2002] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The 1,670-bp nucleotide sequence of the heat shock operon groESL and the 1,236-bp sequence of the citrate synthase gene (gltA) of Anaplasma (Ehrlichia) platys were determined. The topology of the groEL- and gltA-based phylogenetic tree was similar to that derived from 16S rRNA gene analyses with distances. Both groESL- and gltA-based PCRs specific to A. platys were also developed based upon the alignment data.
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Affiliation(s)
- Hisashi Inokuma
- Laboratory of Veterinary Internal Medicine, Faculty of Agriculture, Yamaguchi University, 753-8515 Yamaguchi, Japan.
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Plier ML, Young KM, Barlough JE, Madigan JE, Dumler JS. Equine granulocytic ehrlichiosis: a case report with DNA analysis and species comparison. Vet Clin Pathol 2002; 28:127-130. [PMID: 12075508 DOI: 10.1111/j.1939-165x.1999.tb01062.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michelle L. Plier
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
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Inokuma H, Raoult D, Brouqui P. Detection of Ehrlichia platys DNA in brown dog ticks (Rhipicephalus sanguineus) in Okinawa Island, Japan. J Clin Microbiol 2000; 38:4219-21. [PMID: 11060094 PMCID: PMC87567 DOI: 10.1128/jcm.38.11.4219-4221.2000] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2000] [Accepted: 08/21/2000] [Indexed: 11/20/2022] Open
Abstract
Thirty-two Rhipicephalus sanguineus females collected from eight free-roaming dogs in Okinawa Island, Japan, were examined for ehrlichial DNA by 16S rRNA-based PCR and subsequent sequencing. Partial sequences of Ehrlichia platys 16S rRNA (678 to 679 bp) were detected in three ticks (9.4%) from two dogs. This is the first report of detection of E. platys in Japan, and also the first report of detection in ticks.
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Affiliation(s)
- H Inokuma
- Laboratory of Veterinary Internal Medicine, Faculty of Agriculture, Yamaguchi University, Yamaguchi, Japan
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