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Liu Y, Lu M, Sun Q, Guo Z, Lin Y, Li S, Huang Y, Li Y, Fu Q. Magnolol attenuates macrophage pyroptosis triggered by Streptococcus equi subsp. zooepidemicus. Int Immunopharmacol 2024; 131:111922. [PMID: 38522137 DOI: 10.1016/j.intimp.2024.111922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 12/11/2023] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
Streptococcus equi subsp. zooepidemicus (SEZ) is a zoonotic bacterial pathogen that causes life-threatening infections and various diseases such as meningitis, endocarditis and pneumonia. With the use of antibiotics being severely restricted in the international community, an alternative to antibiotics is urgently needed against bacterial. In the present study, the herbal extract magnolol protected mice against SEZ infection, reflected by increased survival rate and reduced bacterial burden. A pro-inflammatory form of cell death occurred in SEZ-infected macrophage. Magnolol downregulated the expression of pyroptosis-related proteins and reduced the formation of cell membrane pores in infected macrophages to suppress the development of subsequent inflammation. We further demonstrated that magnolol directly suppressed SEZ-induced macrophage pyroptosis, which partially protected macrophages from SEZ infection. Our study revealed that magnolol suppressed inflammation and protected mice against SEZ infection, providing a possible treatment for SEZ infection.
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Affiliation(s)
- Yuxuan Liu
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Meijun Lu
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Qian Sun
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Zheng Guo
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yongjin Lin
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Shun Li
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China
| | - Yunfei Huang
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China
| | - Yajuan Li
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China.
| | - Qiang Fu
- School of Life Science and Engineering, Foshan University, Foshan, China; Foshan University Veterinary Teaching Hospital, Foshan University, Foshan, China.
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Retamar GC, Bustos CP, Guillemi EC, Becú T, Ivanissevich A, Mesplet M, Muñoz AJ. Streptococcus equi subsp. zooepidemicus: High molecular diversity of Argentinian strains isolated from mares with endometritis. Res Vet Sci 2024; 173:105242. [PMID: 38640833 DOI: 10.1016/j.rvsc.2024.105242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/27/2024] [Accepted: 03/24/2024] [Indexed: 04/21/2024]
Abstract
Streptococcus equi subsp. zooepidemicus (S. zooepidemicus) is a mucosal commensal of the lower genital tract in horses and is the most isolated bacterium causing endometritis in mares. The aim of this study was to determine the molecular diversity of S. zooepidemicus obtained from endometritis in mares in Buenos Aires province, Argentina. Thirty isolates obtained from the uterus of mares in 2005 and 2017 were studied. The MLST scheme was applied to identify the Argentinian genotypes and the clonal relationships and patterns of evolutionary descent were identified using the eBURST algorithm - goeBURST. Twenty six different Sequence types (STs) were identified, being only 11 of them previously reported in horses and also, from several host species and tissues. The other 15 STs were reported in Argentinian reproductive strains of mares in our study for the first time. The genotypes obtained from uterus in Argentina were not evenly distributed when all the published S. zooepidemicus STs were analysed, thus, it was not possible to establish that the same lineage circulates in our equine population. The fact that the identified genotypes were also reported in other countries, diverse samples and host species suggest that there is not a host, and an anatomical niche adaptation. Finally, the isolation of the same genotype in the vagina/clitoris and the uterus of the same mare highlights the versatility of S. zooepidemicus and its role as an opportunistic pathogen.
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Affiliation(s)
- Gabriela C Retamar
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Enfermedades Infecciosas, Buenos Aires, Argentina.
| | - Carla P Bustos
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Enfermedades Infecciosas, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Eliana C Guillemi
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Enfermedades Infecciosas, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Instituto de Agrobiotecnología y Biología Molecular (IABIMO) INTA-CONICET, Buenos Aires, Argentina
| | | | | | - Maria Mesplet
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Alejandra J Muñoz
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Cátedra de Enfermedades Infecciosas, Buenos Aires, Argentina
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Rossi F, Santonicola S, Amadoro C, Marino L, Colavita G. Recent Records on Bacterial Opportunistic Infections via the Dietary Route. Microorganisms 2023; 12:69. [PMID: 38257896 PMCID: PMC10819555 DOI: 10.3390/microorganisms12010069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/24/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
This narrative review was aimed at identifying the opportunistic bacterial pathogens that can be transmitted by contaminated food and represent a current threat for patients particularly susceptible to infections because of underlying conditions or predisposing factors. The analysis was focused on recent case or outbreak reports and systematic reviews published in the years 2019 to 2023 and resulted in sorting 24 bacterial groups comprising the genera or species able to cause a variety of systemic or invasive infections if ingested with food or drinking water. These included both bacteria known to cause mild infections in immunocompetent persons and bacteria considered to be innocuous, which are used in food fermentation or as probiotics. No recent cases of infections transmitted through dietary routes were reported for the critical nosocomial pathogens widely found in food products, primarily Acinetobacter baumannii and Klebsiella pneumoniae. However, the very first sources of their introduction into the clinical environment still need to be established. In many instances, risky dietary habits, such as eating raw fish, seafood, raw meat, unpasteurized milk, and their derived products or the lack of control in fermentation processes, has led to the reported illnesses, pointing out the necessity to improve the hygiene of production and consumer awareness of the risks.
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Affiliation(s)
- Franca Rossi
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e Molise (IZSAM), Teramo, Diagnostic Laboratory, 86100 Campobasso, Italy;
| | - Serena Santonicola
- Dipartimento di Medicina e Scienze della Salute “V. Tiberio”, Università degli Studi del Molise, 86100 Campobasso, Italy; (S.S.); (C.A.); (G.C.)
| | - Carmela Amadoro
- Dipartimento di Medicina e Scienze della Salute “V. Tiberio”, Università degli Studi del Molise, 86100 Campobasso, Italy; (S.S.); (C.A.); (G.C.)
| | - Lucio Marino
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e Molise (IZSAM), Teramo, Diagnostic Laboratory, 86100 Campobasso, Italy;
| | - Giampaolo Colavita
- Dipartimento di Medicina e Scienze della Salute “V. Tiberio”, Università degli Studi del Molise, 86100 Campobasso, Italy; (S.S.); (C.A.); (G.C.)
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Koirala S, Pantuzza C, Costa MDO. Survival of Streptococcus equi subsp. zooepidemicus on environmental samples is affected by material type and incubation temperature. Vet Res Commun 2023; 47:2235-2240. [PMID: 37062791 DOI: 10.1007/s11259-023-10095-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/03/2023] [Indexed: 04/18/2023]
Abstract
Streptococcus equi subsp. zooepidemicus is an opportunistic pathogen associated with disease in a range of domestic and wild animals. Despite its importance, very limited data is available on its survival and persistence on the environment. The goal of this study was to evaluate survival of S. zooepidemicus under ideal culture conditions and farm-like setting, in various surface types. Rubber, plastic, wood, and concrete samples were sterilized and inoculated with 109 CFU/mL of S. zooepidemicus with or without feces, and cultured under ideal conditions (37 °C, 5% CO2) or farm-like settings (20oC on air) for a maximum period of 25 days (n = 3/material/environment/feces-group/time-point). Under ideal conditions without feces, the bacterium survived for up to 17 days on plastic and rubber surfaces, 4 days on wood and less than 1 day on concrete (P < 0.05 between materials). Samples under ideal conditions with feces and farm-like settings without feces were negative by day 1 post-inoculation, regardless of the surface material used. Wood and concrete allowed S. zooepidemicus persistence for up to 3 days under farm-like settings when feces were present. This data suggests that environmental persistence of S. zooepidemicus is affected by surface type and incubation temperature.
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Affiliation(s)
- Sulove Koirala
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, 52 campus drive, Saskatoon, SK, Canada
| | - Carolina Pantuzza
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, 52 campus drive, Saskatoon, SK, Canada
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Matheus de O Costa
- Large Animal Clinical Sciences, Western College of Veterinary Medicine, 52 campus drive, Saskatoon, SK, Canada.
- Population Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
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Dolapsakis C, Charalampidis C, Kkirgia M, Kollia P. First Case of Zoonotic Transmission of Streptococcus equi Subspecies zooepidemicus From Cat to Human. Cureus 2023; 15:e46306. [PMID: 37916256 PMCID: PMC10616676 DOI: 10.7759/cureus.46306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2023] [Indexed: 11/03/2023] Open
Abstract
Streptococcus equi subspecies zooepidemicus is a pathogen of veterinary interest that causes disease in horses, pigs, and dogs and is recognized as an emerging cause of feline respiratory disease. Human zoonotic disease is rare but can occur in patients who are taking care of horses and via consumption of unpasteurized animal products. We describe a case of soft tissue infection and bacteremia in an elderly patient who had contact with a cat presenting respiratory symptoms and was treated with antibiotics. To the best of our knowledge, this is the first description of cat-to-human transmission of Streptococcus zooepidemicus.
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Affiliation(s)
- Christodoulos Dolapsakis
- Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Attikon University Hospital, Athens, GRC
| | - Charalampos Charalampidis
- Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Attikon University Hospital, Athens, GRC
| | - Maria Kkirgia
- Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
| | - Pinelopi Kollia
- Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, GRC
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Bohlman T, Waddell H, Schumaker B. A case of bacteremia and pneumonia caused by Streptococcus equi subspecies equi infection in a 70-year-old female following horse exposure in rural Wyoming. Ann Clin Microbiol Antimicrob 2023; 22:65. [PMID: 37533031 PMCID: PMC10399059 DOI: 10.1186/s12941-023-00602-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/01/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND The occurrence of zoonotic infections following an animal exposure continues to be an important consideration for all patients, especially those within agricultural communities. Streptococcus equi subspecies equi (S. equi subsp. equi) is a bacteria known to cause a common infection called 'Strangles' in horses. This article highlights a new case of pneumonia and bacteremia in a patient caused by S. equi subsp. equi following strangles exposure in a horse. Rarely has there been reported horse to human transmission of subsp. equi. CASE PRESENTATION A 70-year-old woman attended a rural emergency department with complaints of dry heaving, fever, chills, shakes, and nausea and presented with a cough. She had undergone a screening colonoscopy two days prior with no other significant medical history. The patient had computed tomography (CT) evidence of a pneumonia and positive blood cultures growing S. equi subsp. equi consistent with bacteremia. The patient later disclosed the recent passing of her horse following its sudden illness six days prior to her emergency department presentation. She had cuddled and kissed the horse prior to its death. The patient was treated with IV lactated ringers during the initial evaluation and admission and also received IV piperacillin-tazobactam 4.5 g every eight hours intravenously during her hospital stay. She was transitioned to an oral antibiotic on discharge. Subsequent blood cultures drawn the day after discharge were negative for S. equi subsp. equi, indicating successful treatment of her bacteremia. CONCLUSIONS This report discusses an atypical presentation of S. equi subsp. equi infection in an otherwise healthy individual, manifesting as early sepsis, pneumonia, and bacteremia. The patient likely developed this infection following direct contact exposure to her horse who had died from presumed strangles a few days prior to her symptom onset. This case highlights the importance of investigating potential exposures to S. equi subsp. equi in rural areas, areas where farming and ranching are prevalent, particularly among individuals working with horses. It is especially important to acknowledge high risk populations such as immunocompromised individuals with signs and symptoms of meningitis or bacteremia.
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Affiliation(s)
- Tristan Bohlman
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Heith Waddell
- University of Washington School of Medicine, Seattle, United States.
| | - Brant Schumaker
- Wyoming WWAMI University of Washington School of Medicine, University of Wyoming, Laramie, Wyoming, USA
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Kaczmarkowska A, Kwiecień E, Didkowska A, Stefańska I, Rzewuska M, Anusz K. The Genetic Diversity and Antimicrobial Resistance of Pyogenic Pathogens Isolated from Porcine Lymph Nodes. Antibiotics (Basel) 2023; 12:1026. [PMID: 37370345 DOI: 10.3390/antibiotics12061026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/29/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
According to the Food and Agriculture Organization of the United Nations, pork remains the most consumed meat in the world. Consequently, it is very important to ensure that it is of the highest microbiological quality. Many of the pathogens that cause lymph node lesions in pigs are zoonotic agents, and the most commonly isolated bacteria are Mycobacterium spp., Streptococcus spp., Staphylococcus aureus and Rhodococcus equi (synonymous with Prescottella equi). The prevention and treatment of zoonotic infections caused by these bacteria are mainly based on antimicrobials. However, an overuse of antimicrobials contributes to the emergence and high prevalence of antimicrobial-resistant strains, which are becoming a serious challenge in many countries. The aim of this study was to evaluate the genetic diversity and antimicrobial resistance of the Streptococcus spp. (n = 48), S. aureus (n = 5) and R. equi (n = 17) strains isolated from swine lymph nodes with and without lesions. All isolates of S. dysgalactiae, S. aureus and R. equi were subjected to PFGE analysis, which showed the genetic relatedness of the tested bacteria in the studied pig populations. Additionally, selected tetracycline and macrolide resistance genes in the streptococcal strains were also studied. The results obtained in the present study provide valuable data on the prevalence, diversity, and antimicrobial resistance of the studied bacteria. Numerous isolated bacterial Streptococcus spp. strains presented resistance to doxycycline, and almost half of them carried tetracycline resistance genes. In addition, R. equi and S. aureus bacteria presented a high level of resistance to beta-lactam antibiotics and to cefotaxime, respectively.
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Affiliation(s)
- Aleksandra Kaczmarkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
| | - Ewelina Kwiecień
- Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
| | - Anna Didkowska
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
| | - Ilona Stefańska
- Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
| | - Magdalena Rzewuska
- Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
| | - Krzysztof Anusz
- Department of Food Hygiene and Public Health Protection, Institute of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), 02-787 Warsaw, Poland
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Eichenberger EM, Dent A, Hayes T, Woc-Colburn L. A Horse of a Different Color: A Case Report of Streptococcus Equi Meningitis in a Kidney Transplant Recipient. Transplant Proc 2023; 55:664-666. [PMID: 36973146 DOI: 10.1016/j.transproceed.2023.02.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 02/25/2023] [Indexed: 03/29/2023]
Abstract
Streptococcus equi is an opportunistic pathogen in horses that has rarely been transmitted to humans. Here we present a zoonotic S. equi meningitis case in a kidney transplant recipient with exposure to infected horses. We discuss the patient's risk factors, clinical presentation, and management in the context of the limited literature on S. equi meningitis.
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Affiliation(s)
- Emily M Eichenberger
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.
| | - Alexander Dent
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Taylor Hayes
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Laila Woc-Colburn
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
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Lord J, Carter C, Smith J, Locke S, Phillips E, Odoi A. Antimicrobial resistance among Streptococcus equi subspecies zooepidemicus and Rhodococcus equi isolated from equine specimens submitted to a diagnostic laboratory in Kentucky, USA. PeerJ 2022; 10:e13682. [PMID: 36164606 PMCID: PMC9508889 DOI: 10.7717/peerj.13682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 06/14/2022] [Indexed: 01/17/2023] Open
Abstract
Background Surveillance of antimicrobial resistance (AMR) among veterinary pathogens is necessary to identify clinically relevant patterns of AMR and to inform antimicrobial use practices. Streptococcus equi subsp. zooepidemicus and Rhodococcus equi are bacterial pathogens of major clinical importance in horses and are frequently implicated in respiratory tract infections. The objectives of this study were to describe antimicrobial resistance patterns and identify predictors of AMR and multidrug resistance (MDR) (resistance to three or more antimicrobial classes) among equine S. zooepidemicus and R. equi isolates. Methods Antimicrobial susceptibility data from equine specimens submitted to the University of Kentucky Veterinary Diagnostic Laboratory between 2012 and 2017 were used in the study. Temporal trends in AMR and MDR were assessed using the Cochran-Armitage test. Logistic regression was used to identify associations between patient characteristics and the following outcomes: (a) MDR among S. zooepidemicus isolates, and (b) resistance to macrolides and ansamycins (rifampin) among R. equi isolates. Logistic regression was also used to investigate whether resistance of S. zooepidemicus and R. equi isolates to an antimicrobial class could be predicted by resistance to other drug classes. Results The vast majority of S. zooepidemicus (99.6%) and R. equi isolates (83%) were resistant to at least one antimicrobial agent, but no significant temporal trends in AMR were observed. Approximately half (53.3%) of the S. zooepidemicus isolates were multidrug-resistant, and there was a significant (p < 0.001) increasing temporal trend of MDR among S. zooepidemicus isolates. Resistance to penicillin, which is typically recommended for treatment of suspected S. zooepidemicus infections, also increased during the study period, from 3.3% to 9.5%. Among R. equi isolates, 19.2% were resistant to one or more macrolide antibiotics, 24% were resistant to rifampin, and 15.6% were resistant to both macrolide(s) and rifampin. For both organisms, resistance to an antimicrobial class could be predicted based on resistance profiles to other drug classes. For instance, significant (p < 0.01) predictors of β-lactam resistance among S. zooepidemicus isolates included resistance to macrolides (Odds Ratio (OR) = 14.7) and ansamycins (OR = 9.3). Resistance to phenicols (OR = 3.7) and ansamycins (OR = 19.9) were associated with higher odds of macrolide resistance among R. equi isolates. Conclusions The increase in MDR among S. zooepidemicus isolates is concerning. The observed levels of resistance to macrolides and rifampin among R. equi are also worrisome given the limited number of antimicrobials available for treatment of this organism. The findings of this study highlight the importance of ongoing surveillance of AMR to guide treatment decisions and directions for future research.
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Affiliation(s)
- Jennifer Lord
- Biomedical and Diagnostic Sciences, University of Tennessee, Knoxville, TN, United States of America
| | - Craig Carter
- Veterinary Diagnostic Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Jacqueline Smith
- Veterinary Diagnostic Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Stephan Locke
- Veterinary Diagnostic Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Erica Phillips
- Veterinary Diagnostic Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Agricola Odoi
- Biomedical and Diagnostic Sciences, University of Tennessee, Knoxville, TN, United States of America
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