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Athanasiou LV, Katsogiannou EG, Tyrnenopoulou P, Gougoulis D, Apostolidis KN, Papadakis SM, Kokkinaki KCG, Papatsiros VG, Tsokana CN. Evidence of Horse Exposure to Anaplasma phagocytophilum, Borrelia burgdorferi, and Leishmania infantum in Greece through the Detection of IgG Antibodies in Serum and in an Alternative Diagnostic Sample-The Saliva. Biomolecules 2023; 13:1374. [PMID: 37759774 PMCID: PMC10526806 DOI: 10.3390/biom13091374] [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: 07/10/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Among the various zoonotic pathogens that infect horses, Anaplasma phagocytophilum, Borrelia spp. and Leishmania spp. have gained scientific interest, and relevant molecular and serological studies in horses have been conducted worldwide. Moreover, human and veterinary medicine have extensively applied alternatives to serum diagnostic samples-such as saliva-for detecting pathogens or antibodies. In this study, we investigated the exposure of horses in Greece to A. phagocytophilum, B. burgdorferi, and L. infantum, and we assessed the diagnostic accuracy of saliva compared to serum in detecting IgG antibodies against the abovementioned pathogens. Paired saliva and serum samples were collected from 317 horses from different regions in Greece. The paired samples were examined using the indirect fluorescent antibody test (IFAT) for detecting IgG antibodies against A. phagocytophilum, B. burgdorferi, and L. infantum. Sensitivity, specificity, positive likelihood ratio (PLR), and negative likelihood ratio (NLR) were determined to assess the validity of saliva as an alternative to serum. The receiver operating characteristic (ROC) curve revealed that the optimal cut-off value for detecting antibodies against all the examined pathogens in saliva was 1/10. Higher seropositivity rates were found for B. burgdorferi (15.14%) and A. phagocytophilum (14.19%) compared to L. infantum (1.26%). The detection of IgG antibodies using IFAT in saliva samples had a good test performance compared to serum. The two sample types had a substantial to almost perfect agreement. Although the sensitivity was moderate (70.83-75.56%) in all cases, the specificity was almost perfect to perfect (99.63-100%). This study provides the first evidence that horses in Greece are exposed to A. phagocytophilum and B. burgdorferi and confirms that the seroprevalence of L. infantum in horses in Greece remains low. Our findings suggest that saliva sampling coupled with IFAT could be successfully applied for detecting IgG antibodies against these important zoonotic pathogens in large-scale epidemiological studies in horses, at the population level, as an alternative to serum.
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Affiliation(s)
- Labrini V. Athanasiou
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece; (E.G.K.); (P.T.); (D.G.); (K.N.A.); (S.M.P.); (K.C.G.K.); (V.G.P.)
| | | | | | | | | | | | | | | | - Constantina N. Tsokana
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece; (E.G.K.); (P.T.); (D.G.); (K.N.A.); (S.M.P.); (K.C.G.K.); (V.G.P.)
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Satué K, Fazio E, Gardón JC, Medica P. Contribution of Hemogram Plan in the Horse's Clinical Evaluation. J Equine Vet Sci 2023; 126:104292. [PMID: 36958411 DOI: 10.1016/j.jevs.2023.104292] [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: 01/20/2023] [Revised: 03/09/2023] [Accepted: 03/16/2023] [Indexed: 03/25/2023]
Abstract
The interpretation of the blood count is essential to help the equine clinician in the diagnosis, prognosis, patient management, and control of equine diseases. Hematologic alterations often reflect the condition of the individual or an overall response to a pathological situation. A thorough clinical examination of the patient is essential to correctly interpret the hematological results. The most common abnormalities in the erythrogram are mainly anemia and polycythemia. The frequent causes of anemia in horses are acute and chronic blood loss, hemolytic anemia, and anemia caused by chronic disease. Evaluation of leukogram, including a total white cell count, a differential cell count, absolute numbers of specific leukocytes can help identify abnormalities that may suggest specific diseases such as a viral or bacterial infection, inflammatory disorders or even a neoplastic process. The platelet count is most often used to monitor or diagnose conditions that cause too much bleeding related with thrombocytopenia; it can be due to multiple mechanisms such as reduction of thrombopoiesis (myeloptisis, myelofibrosis, myeloproliferative disease, and idiopathic medullary aplasias or due to the effect of mielosuppresive drugs), increased peripheral destruction of platelets (immune mediated thrombocytopenia), consumption (dissemined intravascular coagulation) sequestration of the spleen and loss of platelets by idiopathic origin.
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Affiliation(s)
- Katiuska Satué
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, CEU-Cardenal Herrera University, Valencia, Spain.
| | - Esterina Fazio
- Department of Veterinary Sciences, Veterinary Physiology Unit, Polo Universitario Annunziata, Messina, Italy
| | - Juan Carlos Gardón
- Department of Medicine and Animal Surgery, Catholic University of Valencia (San Vicente Mártir), Valencia, Spain
| | - Pietro Medica
- Department of Veterinary Sciences, Veterinary Physiology Unit, Polo Universitario Annunziata, Messina, Italy
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3
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Kašpárková N, Bártová E, Žákovská A, Budíková M, Sedlák K. Antibodies against Borrelia burgdorferi Sensu Lato in Clinically Healthy and Sick Horses: First Report from the Czech Republic. Microorganisms 2023; 11:1706. [PMID: 37512879 PMCID: PMC10386530 DOI: 10.3390/microorganisms11071706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/05/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Lyme disease, caused by some strains of bacterial spirochetes Borrelia burgdorferi sensu lato (Bbsl), affects humans but also domestic animals including horses. The primary pathogens in horses in Europe are B. afzelii, B. garinii and B. burgdorferi sensu stricto. To our knowledge, there are no data available on the seropositivity of B. burgdorferi s.l. in horses from the Czech Republic. In this country, horses are mainly used for sport, breeding, and recreational riding in areas where vectors of B. burgdorferi s.l. are present, which is why they are frequently at risk of infection. The aim of the study was to detect anti-borrelia IgM and IgG antibodies in clinically healthy and sick horses from the Czech Republic and to evaluate the risk factors of infection. In total, sera of 262 horses (247 clinically healthy horses and 15 horses hospitalized due to symptoms of encephalitis/meningoencephalitis) were examined by an indirect sandwich enzyme-linked immunosorbent assay. Positivity of B. burgdorferi was 27% (66/247) in clinically healthy horses (21% IgM, 7% IgG and 3% IgM + IgG antibodies) and 20% (3/15) in horses with clinical signs (20% IgM, 7% IgG and 7% IgM + IgG). In the clinically healthy horses, positivity statistically differed (p ≤ 0.05) only in Pony and Warmblood breeds, being the most affected at 32% and 30%, respectively, while other characteristics (sex, age, usage and localities) had no effect on positivity. This is the first survey of antibodies to B. burgdorferi s.l. in Czech horses showing that horses are exposed to ticks infected with B. burgdorferi s.l. This should be taken into account when making differential diagnoses in patients with non-specific symptoms to start with adequate therapy.
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Affiliation(s)
- Nikola Kašpárková
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Eva Bártová
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary Sciences Brno, Palackého tř. 1946/1, 612 42 Brno, Czech Republic
| | - Alena Žákovská
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- Department of Biology, Faculty of Education, Masaryk University, Poříčí 7/9, 625 00 Brno, Czech Republic
| | - Marie Budíková
- Department of Mathematics and Statistics, Faculty of Science, Masaryk University, Kotlářská 267/2, 611 37 Brno, Czech Republic
| | - Kamil Sedlák
- State Veterinary Institute Prague, Sídlištní 136/24, 165 03 Prague, Czech Republic
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4
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Chapuis RJJ, Becker AAMJ, Dowling PM, Weese JS. Characterisation of faecal microbiota in horses medicated with oral doxycycline hyclate. Equine Vet J 2023; 55:129-141. [PMID: 35202500 DOI: 10.1111/evj.13570] [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: 08/03/2021] [Revised: 01/19/2022] [Accepted: 02/17/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND Antimicrobial-associated diarrhoea is a common adverse effect of antimicrobial treatment in horses and has been reported following the administration of oral doxycycline. The administration of antimicrobials has also been associated with changes in the equine intestinal microbiota diversity yet has not been explored under doxycycline treatment. OBJECTIVES To describe the dynamics of the faecal microbial diversity following a 5-day oral administration of doxycycline in healthy horses with Streptococcus zooepidemicus infected tissue chambers. STUDY DESIGN Experimental prospective cohort study in a single horse group. METHODS Seven healthy adult horses with S. zooepidemicus infected tissue chambers received oral doxycycline at 10 mg/kg q 12 h for 5-days following the tissue chamber inoculation. Faeces were collected prior to the tissue chamber inoculation and until 28-days post inoculation. Faecal microbiota was characterised by high throughput sequencing of the V4 region of the 16S rRNA gene on the Illumina MiSeq sequencing platform. Bioinformatic analysis was performed with Mothur and statistical analysis were conducted on R Studio. RESULTS A significant decrease in alpha diversity, characterised by a decrease of richness and diversity, and a decrease in beta diversity, characterised by changes in relative abundance, occurred after initiation of and during the administration of doxycycline. A decrease in Verrucomicrobia and increase in Firmicutes:Bacteroidetes ratio occurred following the initiation of treatment, with a return to initial Firmicutes:Bacteroidetes ratio during the treatment. It took 23 days after discontinuing the treatment for the faecal microbiota to return close to the initial state. MAIN LIMITATIONS Lack of control population within the study. CONCLUSIONS Transitory intestinal dysbiosis occurs under oral administration of doxycycline in horses.
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Affiliation(s)
- Ronan J J Chapuis
- Clinical Sciences, Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.,Large Animal Clinical Sciences, Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Anne A M J Becker
- Clinical Sciences, Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.,Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Patricia M Dowling
- Large Animal Clinical Sciences, Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - J Scott Weese
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Guarino C, Pinn-Woodcock T, Levine DG, Miller J, Johnson AL. Case Report: Nuchal Bursitis Associated With Borrelia burgdorferi Infection in a Horse. Front Vet Sci 2021; 8:743067. [PMID: 34631864 PMCID: PMC8495068 DOI: 10.3389/fvets.2021.743067] [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: 07/17/2021] [Accepted: 08/18/2021] [Indexed: 11/17/2022] Open
Abstract
Cases of cranial nuchal bursitis associated with Borrelia burgdorferi infection have not been thoroughly described. Here, we describe the case of a 17-year-old mare that was presented for low head carriage, dull demeanor, and resistance to haltering. Imaging supported a diagnosis of nuchal bursitis, and bursoscopy with surgical debridement of the nuchal bursa was performed. B. burgdorferi was identified by molecular diagnostics in serial samples of the bursal fluid, with no other organisms identified. Serology revealed significant elevation in antibodies directed against OspA of B. burgdorferi, but not the typical infection markers, OspC and OspF. Intravenous ceftiofur was administered for 80 days, and the nuchal bursa was directly injected with ceftiofur. The mare recovered and was able to return to work with no recrudescence of clinical signs over the following year to date. Infection with B. burgdorferi should be considered as a differential in cases of septic nuchal bursitis.
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Affiliation(s)
- Cassandra Guarino
- Population Medicine and Diagnostic Sciences, Cornell University, Ithaca, NY, United States
| | - Toby Pinn-Woodcock
- Population Medicine and Diagnostic Sciences, Cornell University, Ithaca, NY, United States
| | - David G Levine
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, United States
| | - Julia Miller
- General Medicine, Alliance Equine Health Care, Glenmoore, PA, United States
| | - Amy L Johnson
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, United States
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Chapuis RJJ, Smith JS, Uehlinger FD, Meachem M, Johnson R, Dowling PM. Pharmacokinetics and pharmacodynamics of doxycycline in a Streptococcusequi subsp. zooepidemicus infection model in horses. J Vet Pharmacol Ther 2021; 44:766-775. [PMID: 34057219 DOI: 10.1111/jvp.12982] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 12/16/2020] [Accepted: 05/03/2021] [Indexed: 02/06/2023]
Abstract
The objectives of this study were to investigate the pharmacokinetics (PK), pharmacodynamics (PD), and the efficacy of oral administration of doxycycline (DXC) in horses with Streptococcus zooepidemicus tissue infections. Tissue chambers (TC) were implanted subcutaneously in the cervical region of 7 horses and inoculated with a single S. zooepidemicus isolate with a minimum inhibitory concentration (MIC) of 0.25 µg/ml, determined by agar dilution. Doxycycline hyclate (10 mg/kg, orally, q 12 h, for 5 days) mixed with poloxamer gel was started following inoculation. The TC fluid was sampled prior to and following inoculation for cytology analysis, quantitative culture, and DXC determination. Plasma DXC concentrations were measured over 48 h following the last dose of DXC administered. The mean plasma peak concentration (Cmax ) of DXC was 0.32 µg/ml, and concentrations above the MIC were only reached in 3 TC samples. In plasma, mean T > MIC was 2.4 h, mean Cmax /MIC was 1.30, and mean AUClast /MIC was 11.63 h. These PK/PD indices did not reach the suggested targets for DXC treatments of infections, and the TC abscessed in all horses. This is the first study to evaluate the recommended dose of DXC in horse in an infection model.
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Affiliation(s)
- Ronan J J Chapuis
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Joe S Smith
- Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, USA
| | - Fabienne D Uehlinger
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Melissa Meachem
- Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ron Johnson
- Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Patricia M Dowling
- Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Cequier A, Sanz C, Rodellar C, Barrachina L. The Usefulness of Mesenchymal Stem Cells beyond the Musculoskeletal System in Horses. Animals (Basel) 2021; 11:ani11040931. [PMID: 33805967 PMCID: PMC8064371 DOI: 10.3390/ani11040931] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary The main target of mesenchymal stem cell therapy in horses has long been the locomotor system, because these athletic animals commonly suffer from tendon and joint lesions. Originally, mesenchymal stem cells were thought to act by just differentiating into the cells of the injured tissue. However, these cells are also able to regulate and stimulate the body’s own repair mechanisms, opening the door to many applications in inflammatory and immune-mediated disorders in both animals and humans. In horses, beyond their traditional application in the musculoskeletal system, these cells have been studied for ophthalmologic pathologies such as corneal ulcers or immune-mediated processes, and for reproductive disorders such as endometritis/endometrosis. Their potential has been explored for equine pathologies very similar to those affecting people, such as asthma, metabolic syndrome, aberrant wound healing, or endotoxemia, as well as for equine-specific pathologies such as laminitis. Current evidence is still preliminary, and further research is needed to clarify different aspects, although research performed so far shows the promising potential of mesenchymal stem cells to treat a wide variety of equine pathologies, some of which are analogous to human disorders. Therefore, advancements in this path will be beneficial for both animals and people. Abstract The differentiation ability of mesenchymal stem cells (MSCs) initially raised interest for treating musculoskeletal injuries in horses, but MSC paracrine activity has widened their scope for inflammatory and immune-mediated pathologies in both equine and human medicine. Furthermore, the similar etiopathogenesis of some diseases in both species has advanced the concept of “One Medicine, One Health”. This article reviews the current knowledge on the use of MSCs for equine pathologies beyond the locomotor system, highlighting the value of the horse as translational model. Ophthalmologic and reproductive disorders are among the most studied for MSC application. Equine asthma, equine metabolic syndrome, and endotoxemia have been less explored but offer an interesting scenario for human translation. The use of MSCs in wounds also provides a potential model for humans because of the healing particularities in both species. High-burden equine-specific pathologies such as laminitis have been suggested to benefit from MSC-therapy, and MSC application in challenging disorders such as neurologic conditions has been proposed. The available data are preliminary, however, and require further development to translate results into the clinic. Nevertheless, current evidence indicates a significant potential of equine MSCs to enlarge their range of application, with particular interest in pathologies analogous to human conditions.
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Affiliation(s)
- Alina Cequier
- Laboratorio de Genética Bioquímica LAGENBIO—Instituto de Investigación Sanitaria de Aragón (IIS)—Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain; (A.C.); (C.R.)
| | - Carmen Sanz
- Servicio de Cirugía y Medicina Equina, Hospital Veterinario, Universidad de Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain;
| | - Clementina Rodellar
- Laboratorio de Genética Bioquímica LAGENBIO—Instituto de Investigación Sanitaria de Aragón (IIS)—Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain; (A.C.); (C.R.)
| | - Laura Barrachina
- Laboratorio de Genética Bioquímica LAGENBIO—Instituto de Investigación Sanitaria de Aragón (IIS)—Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain; (A.C.); (C.R.)
- Servicio de Cirugía y Medicina Equina, Hospital Veterinario, Universidad de Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain;
- Correspondence:
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8
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Teodorowski O, Kalinowski M, Winiarczyk D, Janecki R, Winiarczyk S, Adaszek Ł. Molecular surveillance of tick-borne diseases affecting horses in Poland-Own observations. Vet Med Sci 2021; 7:1159-1165. [PMID: 33620135 PMCID: PMC8294402 DOI: 10.1002/vms3.451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 12/29/2020] [Accepted: 02/02/2021] [Indexed: 12/25/2022] Open
Abstract
The purpose of the study was to carry out the molecular surveillance of piroplasmosis, granulocytic anaplasmosis and lyme borreliosis in horses which originated from Poland and exhibited symptoms raising the suspicion of the aforementioned disease units. The presence of Theileria equi genetic material was detected in 37 out of 512 examined horses (7.2%), and Anaplasma phagocytophilum in 9 (1.8%). The DNA of Borrelia burgdorferi was found in 11 out of 204 examined horses (5.4%). The above-cited results indicate that the problem of tick-borne diseases affecting horses in Poland is not as significant as in other parts of Europe, however they have to be considered in differential diagnosis of the diseases with lethargy, fever, anaemia and thrombocytopenia.
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Affiliation(s)
- Oliwier Teodorowski
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Marcin Kalinowski
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Dagmara Winiarczyk
- Department and Clinic of Animal Internal Diseases, University of Life Sciences, Lublin, Poland
| | - Radosław Janecki
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Stanisław Winiarczyk
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
| | - Łukasz Adaszek
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Lublin, Poland
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Springer A, Glass A, Topp AK, Strube C. Zoonotic Tick-Borne Pathogens in Temperate and Cold Regions of Europe-A Review on the Prevalence in Domestic Animals. Front Vet Sci 2020; 7:604910. [PMID: 33363242 PMCID: PMC7758354 DOI: 10.3389/fvets.2020.604910] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022] Open
Abstract
Ticks transmit a variety of pathogens affecting both human and animal health. In temperate and cold regions of Europe (Western, Central, Eastern, and Northern Europe), the most relevant zoonotic tick-borne pathogens are tick-borne encephalitis virus (TBEV), Borrelia spp. and Anaplasma phagocytophilum. More rarely, Rickettsia spp., Neoehrlichia mikurensis, and zoonotic Babesia spp. are identified as a cause of human disease. Domestic animals may also be clinically affected by these pathogens, and, furthermore, can be regarded as sentinel hosts for their occurrence in a certain area, or even play a role as reservoirs or amplifying hosts. For example, viraemic ruminants may transmit TBEV to humans via raw milk products. This review summarizes the role of domestic animals, including ruminants, horses, dogs, and cats, in the ecology of TBEV, Borrelia spp., A. phagocytophilum, Rickettsia spp., N. mikurensis, and zoonotic Babesia species. It gives an overview on the (sero-)prevalence of these infectious agents in domestic animals in temperate/cold regions of Europe, based on 148 individual prevalence studies. Meta-analyses of seroprevalence in asymptomatic animals estimated an overall seroprevalence of 2.7% for TBEV, 12.9% for Borrelia burgdorferi sensu lato (s.l.), 16.2% for A. phagocytophilum and 7.4% for Babesia divergens, with a high level of heterogeneity. Subgroup analyses with regard to animal species, diagnostic test, geographical region and decade of sampling were mostly non-significant, with the exception of significantly lower B. burgdorferi s.l. seroprevalences in dogs than in horses and cattle. More surveillance studies employing highly sensitive and specific test methods and including hitherto non-investigated regions are needed to determine if and how global changes in terms of climate, land use, agricultural practices and human behavior impact the frequency of zoonotic tick-borne pathogens in domestic animals.
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Affiliation(s)
| | | | | | - Christina Strube
- Institute for Parasitology, Centre for Infection Medicine, University of Veterinary Medicine Hannover, Hanover, Germany
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10
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Scherrer NM, Knickelbein KE, Engiles JB, Johnstone LK, Tewari D, Johnson AL. Ocular disease in horses with confirmed ocular or central nervous system Borrelia infection: Case series and review of literature. Vet Ophthalmol 2020; 23:1014-1024. [PMID: 32862516 DOI: 10.1111/vop.12817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To describe the clinical presentation, treatment, and clinical outcome of horses with ocular disease and evidence of systemic or ocular Lyme disease. ANIMALS STUDIED Five horses met the inclusion criteria of ocular disease with evidence of B burgdorferi present in ocular or CNS tissues. PROCEDURE The goal of this study was to describe the clinical presentation and progression of ocular disease when associated with ocular or CNS B burgdorferi infection in horses. A retrospective review of medical records was performed on horses admitted for ocular disease with evidence of B burgdorferi infection between 1998 and 2015. The diagnosis of B burgdorferi-associated uveitis was based on histopathologic lesions of lymphohistiocytic and suppurative uveitis/endophthalmitis and intralesional argyrophilic spirochetes in either ocular or CNS tissue consistent with Borrelia. Leptospiral uveitis was ruled out by PCR. RESULTS All five horses in the current study had intraocular inflammation at the time of presentation. Medical management with anti-inflammatories was successful in controlling uveitis in the two horses in which treatment of uveitis was attempted. Systemic treatment with oral tetracyclines was unsuccessful in a single case in which treatment of Borrelia was attempted. Four horses were euthanized due to progression of neurologic disease. The surviving horse had an enucleation performed and did not show systemic signs. CONCLUSIONS Infection with Borrelia burgdorferi should be considered in endemic areas as a differential for horses with ocular disease, in particular, uveitis. The prognosis for uveitis and neurologic disease associated with Lyme disease was poor in the current study.
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Affiliation(s)
- Nicole M Scherrer
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, USA
| | - Kelly E Knickelbein
- William R. Pritchard Veterinary Medical Teaching Hospital, UC Davis, Davis, CA, USA
| | - Julie B Engiles
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, USA
| | - Laura K Johnstone
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, USA
| | - Deepanker Tewari
- Pennsylvania Veterinary Laboratory Pennsylvania Department of Agriculture, Harrisburg, PA, USA
| | - Amy L Johnson
- New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, USA
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Sommerauer S, Blohm K, Spergser J, Buchner HHF. Arthritis, panuveitis and hyperaesthesia associated with
Borrelia afzelii
infection in a warmblood gelding. VETERINARY RECORD CASE REPORTS 2019. [DOI: 10.1136/vetreccr-2019-000911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sophia Sommerauer
- Department for Companion Animals and HorsesEquine ClinicUniversity of Veterinary Medicine ViennaViennaAustria
| | - Klaas‐Ole Blohm
- Department for Companion Animals and HorsesOphthalmology UnitUniversity of Veterinary Medicine ViennaViennaAustria
| | - Joachim Spergser
- Institute of Bacteriology, Mycology and HygieneUniversity of Veterinary Medicine ViennaViennaAustria
| | - Heinz Hans Florian Buchner
- Department for Companion Animals and HorsesEquine ClinicUniversity of Veterinary Medicine ViennaViennaAustria
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12
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Rudenko N, Golovchenko M, Kybicova K, Vancova M. Metamorphoses of Lyme disease spirochetes: phenomenon of Borrelia persisters. Parasit Vectors 2019; 12:237. [PMID: 31097026 PMCID: PMC6521364 DOI: 10.1186/s13071-019-3495-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/09/2019] [Indexed: 12/22/2022] Open
Abstract
The survival of spirochetes from the Borrelia burgdorferi (sensu lato) complex in a hostile environment is achieved by the regulation of differential gene expression in response to changes in temperature, salts, nutrient content, acidity fluctuation, multiple host or vector dependent factors, and leads to the formation of dormant subpopulations of cells. From the other side, alterations in the level of gene expression in response to antibiotic pressure leads to the establishment of a persisters subpopulation. Both subpopulations represent the cells in different physiological states. "Dormancy" and "persistence" do share some similarities, e.g. both represent cells with low metabolic activity that can exist for extended periods without replication, both constitute populations with different gene expression profiles and both differ significantly from replicating forms of spirochetes. Persisters are elusive, present in low numbers, morphologically heterogeneous, multi-drug-tolerant cells that can change with the environment. The definition of "persisters" substituted the originally-used term "survivors", referring to the small bacterial population of Staphylococcus that survived killing by penicillin. The phenomenon of persisters is present in almost all bacterial species; however, the reasons why Borrelia persisters form are poorly understood. Persisters can adopt varying sizes and shapes, changing from well-known forms to altered morphologies. They are capable of forming round bodies, L-form bacteria, microcolonies or biofilms-like aggregates, which remarkably change the response of Borrelia to hostile environments. Persisters remain viable despite aggressive antibiotic challenge and are able to reversibly convert into motile forms in a favorable growth environment. Persisters are present in significant numbers in biofilms, which has led to the explanation of biofilm tolerance to antibiotics. Considering that biofilms are associated with numerous chronic diseases through their resilient presence in the human body, it is not surprising that interest in persisting cells has consequently accelerated. Certain diseases caused by pathogenic bacteria (e.g. tuberculosis, syphilis or leprosy) are commonly chronic in nature and often recur despite antibiotic treatment. Three decades of basic and clinical research have not yet provided a definite answer to the question: is there a connection between persisting spirochetes and recurrence of Lyme disease in patients?
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Affiliation(s)
- Natalie Rudenko
- Biology Centre CAS, Institute of Parasitology, Branisovska 31, 37005 Ceske Budejovice, Czech Republic
| | - Maryna Golovchenko
- Biology Centre CAS, Institute of Parasitology, Branisovska 31, 37005 Ceske Budejovice, Czech Republic
| | - Katerina Kybicova
- National Institute of Public Health, Srobarova 48, 100 42 Prague 10, Czech Republic
| | - Marie Vancova
- Biology Centre CAS, Institute of Parasitology, Branisovska 31, 37005 Ceske Budejovice, Czech Republic
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13
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Pecoraro HL, Felippe MJB, Miller AD, Divers TJ, Simpson KW, Guyer KM, Duhamel GE. Neuroborreliosis in a horse with common variable immunodeficiency. J Vet Diagn Invest 2019; 31:241-245. [PMID: 30661472 DOI: 10.1177/1040638718824146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Common variable immunodeficiency (CVID) is a rare condition in adult horses characterized by hypogammaglobulinemia and increased susceptibility to parasitic and bacterial infections, including recurrent respiratory diseases, septicemia, and meningitis. Lyme disease is often included as a differential diagnosis in CVID horses with signs of meningitis; however, the Borrelia burgdorferi organism has not been demonstrated previously within central nervous system tissues of CVID horses with neurologic disease, to our knowledge. We report herein a case of neuroborreliosis in a CVID horse, confirmed by combined immunologic testing, histopathology, real-time PCR assay, fluorescent in situ hybridization, and immunohistochemical staining. Implications of these findings include heightened monitoring of CVID horses for Lyme disease in endemic areas and appropriate therapy in the case of neurologic disease.
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Affiliation(s)
- Heidi L Pecoraro
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - M Julia B Felippe
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - Andrew D Miller
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - Thomas J Divers
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - Kenneth W Simpson
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - Kimberly M Guyer
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
| | - Gerald E Duhamel
- Departments of Biomedical Sciences, Section of Anatomic Pathology (Pecoraro, Miller, Duhamel), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Clinical Sciences (Felippe, Divers, Simpson), College of Veterinary Medicine, Cornell University, Ithaca, NY.,Town and Country Veterinary Service, Boonton, NJ (Guyer)
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14
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Abstract
Given the variable clinical signs attributed to Borrelia burgdorferi, including infectious arthritis, neurologic disease, and behavioral changes, B burgdorferi is an important differential for decreased performance in sport horses. The primary vectors (Ixodes tick species) are expanding their range and thus Borrelia species are located in a wider area, making exposure more likely. Due to regionally high seroprevalence and vague clinical signs, diagnosis of Lyme disease in the horse is believed overestimated. Antibiotics are first-line treatment of confirmed Lyme disease. A single positive serologic test, by itself, is not conformation of Lyme disease but is evidence of current or past infection.
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15
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Ostfeld RS, Brisson D, Oggenfuss K, Devine J, Levy MZ, Keesing F. Effects of a zoonotic pathogen, Borrelia burgdorferi, on the behavior of a key reservoir host. Ecol Evol 2018; 8:4074-4083. [PMID: 29721281 PMCID: PMC5916280 DOI: 10.1002/ece3.3961] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 01/31/2018] [Accepted: 02/09/2018] [Indexed: 01/23/2023] Open
Abstract
Most emerging infectious diseases of humans are transmitted to humans from other animals. The transmission of these “zoonotic” pathogens is affected by the abundance and behavior of their wildlife hosts. However, the effects of infection with zoonotic pathogens on behavior of wildlife hosts, particularly those that might propagate through ecological communities, are not well understood. Borrelia burgdorferi is a bacterium that causes Lyme disease, the most common vector‐borne disease in the USA and Europe. In its North American range, the pathogen is most frequently transmitted among hosts through the bite of infected blacklegged ticks (Ixodes scapularis). Using sham and true vaccines, we experimentally manipulated infection load with this zoonotic pathogen in its most competent wildlife reservoir host, the white‐footed mouse, Peromyscus leucopus, and quantified the effects of infection on mouse foraging behavior, as well as levels of mouse infestation with ticks. Mice treated with the true vaccine had 20% fewer larval blacklegged ticks infesting them compared to mice treated with the sham vaccine, a significant difference. We observed a nonsignificant trend for mice treated with the true vaccine to be more likely to visit experimental foraging trays (20%–30% effect size) and to prey on gypsy moth pupae (5%–20% effect size) compared to mice treated with the sham vaccine. We observed no difference between mice on true‐ versus sham‐vaccinated grids in risk‐averse foraging. Infection with this zoonotic pathogen appears to elicit behavioral changes that might reduce self‐grooming, but other behaviors were affected subtly or not at all. High titers of B. burgdorferi in mice could elicit a self‐reinforcing feedback loop in which reduced grooming increases tick burdens and hence exposure to tick‐borne pathogens.
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Affiliation(s)
| | | | | | - Jill Devine
- University of Pennsylvania Philadelphia PA USA
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16
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Sprong H, Azagi T, Hoornstra D, Nijhof AM, Knorr S, Baarsma ME, Hovius JW. Control of Lyme borreliosis and other Ixodes ricinus-borne diseases. Parasit Vectors 2018; 11:145. [PMID: 29510749 PMCID: PMC5840726 DOI: 10.1186/s13071-018-2744-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/23/2018] [Indexed: 12/25/2022] Open
Abstract
Lyme borreliosis (LB) and other Ixodes ricinus-borne diseases (TBDs) are diseases that emerge from interactions of humans and domestic animals with infected ticks in nature. Nature, environmental and health policies at (inter)national and local levels affect the risk, disease burden and costs of TBDs. Knowledge on ticks, their pathogens and the diseases they cause have been increasing, and resulted in the discovery of a diversity of control options, which often are not highly effective on their own. Control strategies involving concerted actions from human and animal health sectors as well as from nature managers have not been formulated, let alone implemented. Control of TBDs asks for a “health in all policies” approach, both at the (inter)national level, but also at local levels. For example, wildlife protection and creating urban green spaces are important for animal and human well-being, but may increase the risk of TBDs. In contrast, culling or fencing out deer decreases the risk for TBDs under specific conditions, but may have adverse effects on biodiversity or may be societally unacceptable. Therefore, in the end, nature and health workers together must carry out tailor-made control options for the control of TBDs for humans and animals, with minimal effects on the environment. In that regard, multidisciplinary approaches in environmental, but also medical settings are needed. To facilitate this, communication and collaboration between experts from different fields, which may include patient representatives, should be promoted.
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Affiliation(s)
- Hein Sprong
- Centre for Zoonoses & Environmental Microbiology, Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands. .,Laboratory of Entomology, Wageningen University and Research Centre, Wageningen, the Netherlands.
| | - Tal Azagi
- Centre for Zoonoses & Environmental Microbiology, Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Dieuwertje Hoornstra
- Center for Experimental and Molecular Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | - Ard M Nijhof
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Sarah Knorr
- Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - M Ewoud Baarsma
- Center for Experimental and Molecular Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | - Joppe W Hovius
- Center for Experimental and Molecular Medicine, Academic Medical Center, Amsterdam, the Netherlands
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17
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Johnson AL, Johnstone LK, Stefanovski D. Cerebrospinal fluid Lyme multiplex assay results are not diagnostic in horses with neuroborreliosis. J Vet Intern Med 2018; 32:832-838. [PMID: 29460492 PMCID: PMC5866998 DOI: 10.1111/jvim.15067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/19/2017] [Accepted: 01/18/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The accuracy of the Lyme multiplex assay for the diagnosis of neuroborreliosis in horses is unknown. HYPOTHESIS/OBJECTIVES To describe Lyme multiplex results in horses with a postmortem diagnosis of neuroborreliosis. The hypothesis was that paired serum and cerebrospinal fluid (CSF) results and a CSF : serum ratio would allow differentiation of horses with neuroborreliosis from those with other neurologic diseases. ANIMALS Ninety horses that had neurologic examinations, serum and CSF Lyme multiplex analyses, and postmortem examination of the nervous system performed. METHODS Retrospective study. Data collected included signalment, ante- and postmortem diagnoses, and serum and CSF Lyme multiplex results. The CSF : serum ratio was calculated by dividing CSF median fluorescent intensity (MFI) by serum MFI for each result. RESULTS Ten horses had a final diagnosis of neuroborreliosis, 70 were diagnosed with other neurologic diseases, and 10 had no neurologic disease. Not all horses with neuroborreliosis had positive results: 4/10 had at least 1 positive serum result, 5/10 had at least 1 positive CSF result, and 3/10 had at least 1 CSF result 4-fold higher than the corresponding serum result. Results were similar for the 70 horses with other neurologic diseases: 53% had at least 1 positive serum result, 50% had at least 1 positive CSF result, and 16% had at least 1 CSF result 4-fold higher than the corresponding serum result. CONCLUSIONS AND CLINICAL IMPORTANCE Positive Lyme multiplex results were common in horses with neurologic diseases and did not adequately differentiate horses with neuroborreliosis from horses with other disorders.
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Affiliation(s)
- Amy L. Johnson
- Department of Clinical Studies, New Bolton CenterUniversity of Pennsylvania School of Veterinary MedicineKennett SquarePennsylvania
| | | | - Darko Stefanovski
- Department of Clinical Studies, New Bolton CenterUniversity of Pennsylvania School of Veterinary MedicineKennett SquarePennsylvania
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18
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Divers TJ, Gardner RB, Madigan JE, Witonsky SG, Bertone JJ, Swinebroad EL, Schutzer SE, Johnson AL. Borrelia burgdorferi Infection and Lyme Disease in North American Horses: A Consensus Statement. J Vet Intern Med 2018; 32:617-632. [PMID: 29469222 PMCID: PMC5866975 DOI: 10.1111/jvim.15042] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/14/2017] [Accepted: 12/14/2017] [Indexed: 11/27/2022] Open
Abstract
Borrelia burgdorferi infection is common in horses living in Lyme endemic areas and the geographic range for exposure is increasing. Morbidity after B. burgdorferi infection in horses is unknown. Documented, naturally occurring syndromes attributed to B. burgdorferi infection in horses include neuroborreliosis, uveitis, and cutaneous pseudolymphoma. Although other clinical signs such as lameness and stiffness are reported in horses, these are often not well documented. Diagnosis of Lyme disease is based on exposure to B. burgdorferi, cytology or histopathology of infected fluid or tissue and antigen detection. Treatment of Lyme disease in horses is similar to treatment of humans or small animals but treatment success might not be the same because of species differences in antimicrobial bioavailability and duration of infection before initiation of treatment. There are no approved equine label Lyme vaccines but there is strong evidence that proper vaccination could prevent infection in horses.
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Affiliation(s)
- T J Divers
- Department of Clinical Sciences, Cornell University, Ithaca, NY
| | | | - J E Madigan
- Department of Medicine and Epidemiology, University of California - Davis, CA
| | - S G Witonsky
- Department of Large Animal Clinical Sciences, Virginia-Maryland Region CVM, Blacksburg, VA
| | - J J Bertone
- CVMm Western University of Health Sciences, Pomona, CA
| | | | - S E Schutzer
- Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ
| | - A L Johnson
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, Kennett Square, PA
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19
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Caol S, Divers T, Crisman M, Chang YF. In vitro susceptibility of Borrelia burgdorferi isolates to three antibiotics commonly used for treating equine Lyme disease. BMC Vet Res 2017; 13:293. [PMID: 28962614 PMCID: PMC5622483 DOI: 10.1186/s12917-017-1212-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 09/22/2017] [Indexed: 02/02/2023] Open
Abstract
Background Lyme disease in humans is predominantly treated with tetracycline, macrolides or beta lactam antibiotics that have low minimum inhibitory concentrations (MIC) against Borrelia burgdorferi. Horses with Lyme disease may require long-term treatment making frequent intravenous or intramuscular treatment difficult and when administered orally those drugs may have either a high incidence of side effects or have poor bioavailability. The aim of the present study was to determine the in vitro susceptibility of three B. burgdorferi isolates to three antibiotics of different classes that are commonly used in practice for treating Borrelia infections in horses. Results Broth microdilution assays were used to determine minimum inhibitory concentration of three antibiotics (ceftiofur sodium, minocycline and metronidazole), for three Borrelia burgdorferi isolates. Barbour-Stoner-Kelly (BSK K + R) medium with a final inoculum of 106Borrelia cells/mL and incubation periods of 72 h were used in the determination of MICs. Observed MICs indicated that all isolates had similar susceptibility to each drug but susceptibility to the tested antimicrobial agents varied; ceftiofur sodium (MIC = 0.08 μg/ml), minocycline hydrochloride (MIC = 0.8 μg/ml) and metronidazole (MIC = 50 μg/ml). Conclusions The MIC against B. burgorferi varied among the three antibiotics with ceftiofur having the lowest MIC and metronidazole the highest MIC. The MIC values observed for ceftiofur in the study fall within the range of reported serum and tissue concentrations for the drug metabolite following ceftiofur sodium administration as crystalline-free acid. Minocycline and metronidazole treatments, as currently used in equine practice, could fall short of attaining MIC concentrations for B. burgdorferi.
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Affiliation(s)
- Sanjie Caol
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.,Currently Research Center of Swine Disease, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Thomas Divers
- Department of Clinical Sciences College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.
| | - Mark Crisman
- Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, 24061, USA
| | - Yung-Fu Chang
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
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20
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CLINICAL DISEASE ASSOCIATED WITH ANAPLASMA PHAGOCYTOPHILUM INFECTION IN CAPTIVE PRZEWALSKI'S HORSES (EQUUS FERUS PRZEWALSKII). J Zoo Wildl Med 2017; 48:497-505. [PMID: 28749289 DOI: 10.1638/2016-0247r.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anaplasma phagocytophilum is a tick-borne pathogen of domestic horses and the causative agent of equine granulocytic anaplasmosis. This case series describes three confirmed cases of clinical anaplasmosis, and a fourth case of presumptive anaplasmosis in Przewalski's horses ( Equus ferus przewalskii) housed at the Smithsonian Conservation Biology Institute from 2008 to 2014. Clinical signs varied among individuals with affected horses exhibiting lethargy, weakness, pyrexia, hypophagia, reluctance to move, or ataxia. Anaplasmosis cases were confirmed with a combination of identification of neutrophilic inclusions (morulae) on peripheral blood smear, positive polymerase chain reaction (PCR) testing of whole blood, or convalescent titers. All animals recovered after antimicrobial therapy with oxytetracycline. Diagnosis should be made by a combination of clinical signs plus identification of morulae or positive A. phagocytophilum PCR. Treatment is curative using oxytetracyline intramuscularly or intravenously followed by daily therapy with oxytetracyline or minocycline for 14-30 days. The authors recommend that A. phagocytophilum infection be included on any differential list for Przewalski's horses presenting with fever or ataxia within or near an enzootic area.
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21
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Guarino C, Asbie S, Rohde J, Glaser A, Wagner B. Vaccination of horses with Lyme vaccines for dogs induces short-lasting antibody responses. Vaccine 2017; 35:4140-4147. [PMID: 28668566 DOI: 10.1016/j.vaccine.2017.06.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/15/2017] [Accepted: 06/15/2017] [Indexed: 01/25/2023]
Abstract
Borrelia burgdorferi can induce Lyme disease. Approved Lyme vaccines for horses are currently not available. In an effort to protect horses, veterinarians are using Lyme vaccines licensed for dogs. However, data to assess the response of horses to, or determine the efficacy of this off-label vaccine use are missing. Here, antibodies against outer surface protein A (OspA), OspC, and OspF were quantified in diagnostic serum submissions from horses with a history of vaccination with canine Lyme vaccines. The results suggested that many horses respond with low and often short-lasting antibody responses. Subsequently, four experimental vaccination trials were performed. First, we investigated antibody responses to three canine vaccines in B. burgdorferi-naïve horses. One killed bacterin vaccine induced antibodies against OspC. OspA antibodies were low for all three vaccines and lasted less than 16weeks. The second trial tested the impact of the vaccine dose using the OspA/OspC inducing bacterin vaccine in horses. A 2mL dose produced higher OspA and OspC antibody values than a 1mL dose. However, the antibody response again quickly declined, independent of dose. Third, the horses were vaccinated with 2 doses of a recombinant OspA vaccine. Previous vaccination and/or environmental exposure enhanced the magnitude and longevity of the OspA antibody response to about 20weeks. Last, the influence of intramuscular versus subcutaneous vaccine administration was investigated for the recombinant OspA vaccine. OspA antibody responses were not influenced by injection route. The current work highlights that commercial Lyme vaccines for dogs induce only transient antibody responses in horses which can also be of low magnitude. Protection from infection with B. burgdorferi should not be automatically assumed after vaccinating horses with Lyme vaccines for dogs.
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Affiliation(s)
- Cassandra Guarino
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Sanda Asbie
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Jennifer Rohde
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Amy Glaser
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Bettina Wagner
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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22
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Basile RC, Yoshinari NH, Mantovani E, Bonoldi VN, Macoris DDG, Queiroz-Neto AD. Brazilian borreliosis with special emphasis on humans and horses. Braz J Microbiol 2016; 48:167-172. [PMID: 27769883 PMCID: PMC5220628 DOI: 10.1016/j.bjm.2016.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 05/20/2016] [Indexed: 01/05/2023] Open
Abstract
Borreliosis caused by Borrelia burgdorferi sensu lato is a cosmopolitan zoonosis studied worldwide; it is called Lyme disease in many countries of the Northern Hemisphere and Lyme-like or Baggio-Yoshinari Syndrome in Brazil. However, despite the increasing number of suspect cases, this disease is still neglected in Brazil by the medical and veterinary communities. Brazilian Lyme-like borreliosis likely involves capybaras as reservoirs and Amblyomma and Rhipicephalus ticks as vectors. Thus, domestic animals can serve as key carriers in pathogen dissemination. This zoonosis has been little studied in horses in Brazil. The first survey was performed in the state of Rio de Janeiro, and this Brazilian Borreliosis exhibits many differences from the disease widely described in the Northern Hemisphere. The etiological agent shows different morphological and genetic characteristics, the disease has a higher recurrence rate after treatment with antibiotics, and the pathogen stimulates intense symptoms such as a broader immune response in humans. Additionally, the Brazilian zoonosis is not transmitted by the Ixodes ricinus complex. With respect to clinical manifestations, Baggio-Yoshinari Syndrome has been reported to cause neurological, cardiac, ophthalmic, muscle, and joint alterations in humans. These symptoms can possibly occur in horses. Here, we present a current panel of studies involving the disease in humans and equines, particularly in Brazil.
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Affiliation(s)
- Roberta Carvalho Basile
- Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, São Paulo, SP, Brazil.
| | | | - Elenice Mantovani
- Universidade de São Paulo, Departamento de reumatologia, São Paulo, SP, Brazil
| | | | - Delphim da Graça Macoris
- Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, São Paulo, SP, Brazil
| | - Antonio de Queiroz-Neto
- Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, São Paulo, SP, Brazil
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23
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Cruz Villagrán C, Schumacher J, Donnell R, Dhar MS. A Novel Model for Acute Peripheral Nerve Injury in the Horse and Evaluation of the Effect of Mesenchymal Stromal Cells Applied In Situ on Nerve Regeneration: A Preliminary Study. Front Vet Sci 2016; 3:80. [PMID: 27695697 PMCID: PMC5023688 DOI: 10.3389/fvets.2016.00080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/31/2016] [Indexed: 12/16/2022] Open
Abstract
Transplantation of mesenchymal stromal cells (MSCs) to sites of experimentally created nerve injury in laboratory animals has shown promising results in restoring nerve function. This approach for nerve regeneration has not been reported in horses. In this study, we first evaluated the in vitro ability of equine bone marrow-derived MSCs (EBM-MSCs) to trans-differentiate into Schwann-like cells and subsequently tested the MSCs in vivo for their potential to regenerate a transected nerve after implantation. The EBM-MSCs from three equine donors were differentiated into SCLs for 7 days, in vitro, in the presence of specialized differentiation medium and evaluated for morphological characteristics, by using confocal microscopy, and for protein characteristics, by using selected Schwann cell markers (GFAP and S100b). The EBM-MSCs were then implanted into the fascia surrounding the ramus communicans of one fore limb of three healthy horses after a portion of this nerve was excised. The excised portion of the nerve was examined histologically at the time of transection, and stumps of the nerve were examined histologically at day 45 after transplantation. The EBM-MSCs from all donors demonstrated morphological and protein characteristics of those of Schwann cells 7 days after differentiation. Nerves implanted with EBM-MSCs after nerve transection did not show evidence of nerve regeneration at day 45. Examination of peripheral nerves collected 45 days after injury and stem cell treatment revealed no histological differences between nerves treated with MSCs and those treated with isotonic saline solution (controls). The optimal delivery of MSCs and the model suitable to study the efficacy of MSCs in nerve regeneration should be investigated.
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Affiliation(s)
- Claudia Cruz Villagrán
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN , USA
| | - Jim Schumacher
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN , USA
| | - Robert Donnell
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN , USA
| | - Madhu S Dhar
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee , Knoxville, TN , USA
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Goc A, Niedzwiecki A, Rath M. Cooperation of Doxycycline with Phytochemicals and Micronutrients Against Active and Persistent Forms of Borrelia sp. Int J Biol Sci 2016; 12:1093-103. [PMID: 27570483 PMCID: PMC4997053 DOI: 10.7150/ijbs.16060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/14/2016] [Indexed: 11/05/2022] Open
Abstract
Phytochemicals and micronutrients represent a growing theme in antimicrobial defense; however, little is known about their anti-borreliae effects of reciprocal cooperation with antibiotics. A better understanding of this aspect could advance our knowledge and help improve the efficacy of current approaches towards Borrelia sp. In this study, phytochemicals and micronutrients such as baicalein, luteolin, 10-HAD, iodine, rosmarinic acid, and monolaurin, as well as, vitamins D3 and C were tested in a combinations with doxycycline for their in vitro effectiveness against vegetative (spirochetes) and latent (rounded bodies, biofilm) forms of Borrelia burgdorferi and Borrelia garinii. Anti-borreliae effects were evaluated according to checkerboard assays and supported by statistical analysis. The results showed that combination of doxycycline with flavones such as baicalein and luteolin exhibited additive effects against all morphological forms of studied Borrelia sp. Doxycycline combined with iodine demonstrated additive effects against spirochetes and biofilm, whereas with fatty acids such as monolaurin and 10-HAD it produced FICIs of indifference. Additive anti-spirochetal effects were also observed when doxycycline was used with rosmarinic acid and both vitamins D3 and C. Antagonism was not observed in any of the cases. This data revealed the intrinsic anti-borreliae activity of doxycycline with tested phytochemicals and micronutrients indicating that their addition may enhance efficacy of this antibiotic in combating Borrelia sp. Especially the addition of flavones balcalein and luteolin to a doxycycline regimen could be explored further in defining more effective treatments against these bacteria.
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Affiliation(s)
- Anna Goc
- Dr. Rath Research Institute BV, Santa Clara, California 95050, USA
| | | | - Matthias Rath
- Dr. Rath Research Institute BV, Santa Clara, California 95050, USA
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Johnstone LK, Engiles JB, Aceto H, Buechner-Maxwell V, Divers T, Gardner R, Levine R, Scherrer N, Tewari D, Tomlinson J, Johnson AL. Retrospective Evaluation of Horses Diagnosed with Neuroborreliosis on Postmortem Examination: 16 Cases (2004-2015). J Vet Intern Med 2016; 30:1305-12. [PMID: 27327172 PMCID: PMC5094551 DOI: 10.1111/jvim.14369] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/30/2016] [Accepted: 05/26/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Equine neuroborreliosis (NB), Lyme disease, is difficult to diagnose and has limited description in the literature. OBJECTIVE Provide a detailed description of clinical signs, diagnostic, and pathologic findings of horses with NB. ANIMALS Sixteen horses with histologically confirmed NB. METHODS Retrospective review of medical records at the University of Pennsylvania and via an ACVIM listserv query with inclusion criteria requiring possible exposure to Borrelia burgdorferi and histologic findings consistent with previous reports of NB without evidence of other disease. RESULTS Sixteen horses were identified, 12 of which had additional evidence of NB. Clinical signs were variable including muscle atrophy or weight loss (12), cranial nerve deficits (11), ataxia (10), changes in behavior (9), dysphagia (7), fasciculations (6), neck stiffness (6), episodic respiratory distress (5), uveitis (5), fever (2), joint effusion (2), and cardiac arrhythmias (1). Serologic analysis was positive for B. burgdorferi infection in 6/13 cases tested. CSF abnormalities were present in 8/13 cases tested, including xanthochromia (4/13), increased total protein (5/13; median: 91 mg/dL, range: 25-219 mg/dL), and a neutrophilic (6/13) or lymphocytic (2/13) pleocytosis (median: 25 nucleated cells/μL, range: 0-922 nucleated cells/μL). PCR on CSF for B. burgdorferi was negative in the 7 cases that were tested. CONCLUSION AND CLINICAL IMPORTANCE Diagnosis of equine NB is challenging due to variable clinical presentation and lack of sensitive and specific diagnostic tests. Negative serology and normal CSF analysis do not exclude the diagnosis of NB.
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Affiliation(s)
- L K Johnstone
- University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA
| | - J B Engiles
- University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA
| | - H Aceto
- University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA
| | - V Buechner-Maxwell
- Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA
| | - T Divers
- Cornell University College of Veterinary Medicine, Ithaca, NY
| | - R Gardner
- B.W. Furlong & Associates, Oldwick, NJ
| | - R Levine
- Henderson Veterinary Associates, Elizabethtown, PA
| | - N Scherrer
- University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA
| | - D Tewari
- Pennsylvania Veterinary Laboratory, Pennsylvania Department of Agriculture, Harrisburg, PA
| | - J Tomlinson
- Cornell University College of Veterinary Medicine, Ithaca, NY
| | - A L Johnson
- University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA
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26
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Affiliation(s)
- A. C. E. Draper
- Department of Veterinary Population Medicine; University of Minnesota; St Paul USA
| | - C. J. Finno
- Department of Veterinary Population Medicine; University of Minnesota; St Paul USA
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Lee SH, Yun SH, Choi E, Park YS, Lee SE, Cho GJ, Kwon OD, Kwak D. Serological Detection of Borrelia burgdorferi among Horses in Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2016; 54:97-101. [PMID: 26951987 PMCID: PMC4792323 DOI: 10.3347/kjp.2016.54.1.97] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/29/2015] [Accepted: 12/30/2015] [Indexed: 11/25/2022]
Abstract
Lyme disease is a tick-borne zoonotic infectious disease caused by Borrelia burgdorferi. The present study assessed the infection status of B. burgdorferi among horses reared in Korea using ELISA and PCR. Between 2009 and 2013, blood samples were collected from 727 horses throughout Korea. Data for each animal including age, gender, breed, and region of sample collection were used for epidemiological analysis. Overall, 38 (5.2%; true prevalence: 5.5%) of 727 horses were seropositive by ELISA. There were statistically significant differences according to breed and region (P<0.001) whose differences might be attributed to the ecology of vector ticks and climate conditions. Using 2 nested PCR, none of the samples tested positive for B. burgdorferi. Thus, a positive ELISA result can indicate only that the tested horse was previously exposed to B. burgdorferi, with no certainty over the time of exposure. Since global warming is likely to increase the abundance of ticks in Korea, continuous monitoring of tick-borne diseases in Korean horses is needed.
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Affiliation(s)
- Seung-Hun Lee
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Sun-Hee Yun
- Division of Veterinary Service Lab, Institute of Public Health & Environment, Incheon 22320, Korea
| | | | - Yong-Soo Park
- Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea
| | - Sang-Eun Lee
- Division of Malaria and Parasitic Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju 28159, Korea
| | - Gil-Jae Cho
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Oh-Deog Kwon
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
| | - Dongmi Kwak
- College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea
- Cardiovascular Research Institute, Kyungpook National University, Daegu 41566, Korea
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28
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Affiliation(s)
- J. Bartol
- New England Equine Medical and Surgical Center; New Hampshire USA
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29
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30
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Wagner B, Goodman LB, Rollins A, Freer HS. Antibodies to OspC, OspF and C6 antigens as indicators for infection with Borrelia burgdorferi in horses. Equine Vet J 2013; 45:533-7. [PMID: 23432019 DOI: 10.1111/evj.12033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 12/07/2012] [Indexed: 11/29/2022]
Abstract
REASONS FOR PERFORMING STUDY Lyme disease is caused by Borrelia burgdorferi, which is transmitted by infected ticks (Ixodes spp.). Reports on Lyme disease in horses have increased in recent years. Nevertheless, the diagnosis of Lyme disease in horses is still challenging owing to its vague clinical presentation and the limitations of diagnostic tests. OBJECTIVES This study used a new serological Lyme multiplex assay to examine antibody responses to 3 antigens of B. burgdorferi, outer surface protein (Osp) C, OspF and C6, and to verify their use as markers for early and late infection stages in horses. METHODS Multiplex analysis of antibodies to OspC, OspF and C6 in equine patient sera (n = 191) was performed. A subset of the sera (n = 90) was also tested using a commercial C6-based Lyme test. RESULTS Antibodies to OspF and C6 highly correlate as reliable markers of infection with B. burgdorferi in horses. Antibodies to OspC, which have been confirmed as early infection markers in man and dogs, were only detected in some patient sera, suggesting that OspC antibodies are indicators of early infection in horses. Commercial C6 testing identified most infected horses but also resulted in false positive and false negative interpretations. CONCLUSIONS Serological multiplex testing is a rapid and quantitative diagnostic method to confirm infection with B. burgdorferi and to identify the stage of infection. In horses with risk of exposure and clinical signs, multiplex testing supports the diagnosis of Lyme disease. POTENTIAL RELEVANCE Antimicrobial treatment of B. burgdorferi is time sensitive. Treatment success decreases with time of persistent infection, while the risk of developing chronic disease increases. The ability to identify early infection with B. burgdorferi provides practitioners and clinicians with a tool to improve the diagnosis of equine Lyme disease and make treatment decisions.
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Affiliation(s)
- B Wagner
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, New York, USA.
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31
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LAUS F, VERONESI F, PASSAMONTI F, PAGGI E, CERQUETELLA M, HYATT D, TESEI B, FIORETTI DP. Prevalence of Tick Borne Pathogens in Horses from Italy. J Vet Med Sci 2013; 75:715-20. [DOI: 10.1292/jvms.12-0449] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Fulvio LAUS
- School of Veterinary Medical Sciences, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica (MC), Italy
| | - Fabrizia VERONESI
- Department of Biopathological and Hygiene of Animal and Food Productions, Section of Parasitology, Faculty of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy
| | - Fabrizio PASSAMONTI
- Department of Veterinary Pathology, Diagnostic and Clinics, Section of Experimental Science and Applied Biotechnologies, Faculty of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy
| | - Emanuele PAGGI
- School of Veterinary Medical Sciences, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica (MC), Italy
| | - Matteo CERQUETELLA
- School of Veterinary Medical Sciences, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica (MC), Italy
| | - Doreene HYATT
- Department of Microbiology, Immunology and Pathology, Faculty of Veterinary Science, University of Colorado States, 200 West Lake Street 1644, Fort Collins, Colorado, U.S.A
| | - Beniamino TESEI
- School of Veterinary Medical Sciences, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica (MC), Italy
| | - Daniela Piergili FIORETTI
- Department of Biopathological and Hygiene of Animal and Food Productions, Section of Parasitology, Faculty of Veterinary Medicine, University of Perugia, Via San Costanzo 4, 06126 Perugia, Italy
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Veronesi F, Laus F, Passamonti F, Tesei B, Piergili Fioretti D, Genchi C. Occurrence of Borrelia lusitaniae infection in horses. Vet Microbiol 2012; 160:535-8. [PMID: 22789679 DOI: 10.1016/j.vetmic.2012.06.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 06/20/2012] [Accepted: 06/20/2012] [Indexed: 11/28/2022]
Abstract
The aim of the study was to investigate Borrelia burgdorferi sensu lato (s.l.) infection in horses exposed to heavy tick infestations. Blood samples of 98 healthy horses from 5 stud farms were examined by SNAP(®) 4D× and PCR to detect antibodies against B. burgdorferi s.l. and Borrelia DNA, respectively. Ten samples (15.3%) were antibody positive and 5 samples (5.1%) were both antibody and PCR positive. Sequence analysis showed the highest homology with the B. lusitaniae genospecies. No differences were found between sexes and stud farms, while age was significantly related to seropositivity (p<0.05). Our data confirms the presence of B. lusitaniae infection in horses, previously not clearly demonstrated.
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Affiliation(s)
- Fabrizia Veronesi
- Department of Biopathological and Hygiene of Animal and Food Productions, Section of Parasitology, Faculty of Veterinary Medicine, University of Perugia, Italy.
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Priest HL, Irby NL, Schlafer DH, Divers TJ, Wagner B, Glaser AL, Chang YF, Smith MC. Diagnosis of Borrelia-associated uveitis in two horses. Vet Ophthalmol 2012; 15:398-405. [DOI: 10.1111/j.1463-5224.2012.01000.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Dyson SJ. Lesions of the Equine Neck Resulting in Lameness or Poor Performance. Vet Clin North Am Equine Pract 2011; 27:417-37. [DOI: 10.1016/j.cveq.2011.08.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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35
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Sears KP, Divers TJ, Neff RT, Miller WH, McDonough SP. A case of Borrelia-associated cutaneous pseudolymphoma in a horse. Vet Dermatol 2011; 23:153-6. [PMID: 22029872 DOI: 10.1111/j.1365-3164.2011.01013.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This case report describes a 10-year-old horse that developed multiple dermal papules over the right masseter area following removal of a tick from the same site 3 months earlier. Histological examination of a biopsy from a papule was suggestive of either a T-cell-rich B-cell lymphoma or cutaneous lymphoid hyperplasia, a form of pseudolymphoma sometimes associated with a tick bite. Positive serological testing and PCR of the biopsy sample for Borrelia in conjunction with immunohistochemical testing of the skin biopsy, the clinical history and response to treatment with doxycycline strongly supported the diagnosis of Borrelia-associated cutaneous pseudolymphoma.
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Affiliation(s)
- Kelly P Sears
- Fairfield Equine Associates, 32 Bamabas Road, Newtown, CT 06470, USA
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36
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Update on infectious diseases affecting the equine nervous system. Vet Clin North Am Equine Pract 2011; 27:573-87. [PMID: 22100045 DOI: 10.1016/j.cveq.2011.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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37
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SCHNABEL LV, PAPICH MG, DIVERS TJ, ALTIER C, APREA MS, McCARREL TM, FORTIER LA. Pharmacokinetics and distribution of minocycline in mature horses after oral administration of multiple doses and comparison with minimum inhibitory concentrations. Equine Vet J 2011; 44:453-8. [DOI: 10.1111/j.2042-3306.2011.00459.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Wagner B, Freer H, Rollins A, Erb HN, Lu Z, Gröhn Y. Development of a multiplex assay for the detection of antibodies to Borrelia burgdorferi in horses and its validation using Bayesian and conventional statistical methods. Vet Immunol Immunopathol 2011; 144:374-81. [PMID: 21890217 DOI: 10.1016/j.vetimm.2011.08.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 08/02/2011] [Accepted: 08/08/2011] [Indexed: 10/17/2022]
Abstract
Lyme disease is a zoonotic, vector-borne disease and occurs in mammals including horses. The disease is induced by infection with spirochetes of the Borrelia burgdorferi sensu lato group. Infection of mammalian hosts requires transmission of spirochetes by infected ticks during tick bites. Lyme disease diagnosis is based on clinical signs, possible exposure to infected ticks, and antibody testing which is traditionally performed by ELISA and Western blotting (WB). This report describes the development and validation of a new fluorescent bead-based multiplex assay for the detection of antibodies to B. burgdorferi outer surface protein A (OspA), OspC and OspF antigens in horse serum. Testing of 562 equine sera was performed blindly and in parallel by using WB and the new multiplex assay. Because a true gold standard is missing for Lyme antibody testing, we performed and compared different statistical approaches to validate the new Lyme multiplex assay. One approach was to use WB results as a 'relative gold standard' in ROC-curve and likelihood-ratio analyses of the new test. Cut-off values and interpretation ranges of the multiplex assay were established by the analysis. The second statistical approach used a Bayesian model for the calculation of diagnostic sensitivities and specificities of the multiplex assay. The Bayesian analysis takes into consideration that no true gold standard exists for detecting antibodies to B. burgdorferi and estimated sensitivities and specificities of both tests that were compared. Therefore, the Bayesian analysis also resulted in an evaluation of diagnostic sensitivity and specificity of WB. Overall, the new assay was characterized by low background values and a wide dynamic quantification range for the detection of antibodies to OspA, OspC and OspF antigens of B. burgdorferi. The diagnostic sensitivity and specificity for the OspA bead-based assay were calculated as 49% and 85%, respectively, and by a standard ROC curve analysis only because the Bayesian model could not be run on this parameter. The Bayesian-derived diagnostic sensitivities of the OspC and OspF assays were 80% and 86%, respectively. For comparison, the Bayesian-derived estimates for WB resulted in sensitivities of 72% for OspC and 80% for OspF. The Bayesian diagnostic specificities of the multiplex assay were 79% and 69% for OspC and OspF, respectively. WB analysis had specificities of 92% for OspC and 77% for OspF. Although the analysis of a new assay in the absence of a true gold standard remains challenging, the approach used here can help to address this problem when new technologies and traditionally used test standards differ significantly in their analytical sensitivities, which consequently causes problems in the calculation of diagnostic sensitivity and sensitivity values for the new assay. In summary, the new multiplex assay for the detection of antibodies to B. burgdorferi OspA, OspC and OspF antigens in horse serum has improved analytical and diagnostic sensitivities compared to WB analysis. Multiplex analysis is a valuable quantitative tool that simultaneously detects antibodies indicative for natural infection with and/or vaccination against the Lyme pathogen.
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Affiliation(s)
- Bettina Wagner
- Department of Population Medicine and Diagnostic Sciences, Cornell University, Ithaca, NY, USA.
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