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Maroto-Tello A, Ayllón T, Aguinaga-Casañas MA, Ariza JJ, Penelo S, Baños A, Ortiz-Díez G. In Vitro Activity of Allium cepa Organosulfur Derivatives against Canine Multidrug-Resistant Strains of Staphylococcus spp. and Enterobacteriaceae. Vet Sci 2024; 11:26. [PMID: 38250932 PMCID: PMC10820550 DOI: 10.3390/vetsci11010026] [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: 10/27/2023] [Revised: 12/06/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND The increase of multi-resistant bacteria, especially Staphylococcus spp. and Enterobacteriaceae, constitutes a challenge in veterinary medicine. The rapid growth of resistance is outpacing antibiotic discovery. Innovative strategies are needed, including the use of natural products like Allium species (Allium sativum L. and Allium cepa L.), which have been used empirically for centuries to treat infectious diseases in humans and farm and aquaculture animals due to their antibacterial properties. METHODS This study aimed to evaluate the in vitro activity of two Allium-derived compounds, propyl propane thiosulfinate (PTS) and propyl propane thiosulfonate (PTSO), against multi-resistant Staphylococcus spp. (n = 30) and Enterobacteriaceae (n = 26) isolated from dogs referred to a veterinary teaching hospital in Madrid. RESULTS AND DISCUSSION The results indicated the in vitro efficacy of PTSO/PTS against the tested bacterial strains, and 56.7% of Staphylococcus pseudintermedius and 53.8% of Enterobacteriaceae showed sensitivity to PTS and PTSO compared with classic antibiotics. In addition, 50% of S. pseudintermedius strains resistant to erythromycin, ibofloxacin, difloxacin and orbifloxacin and 50% of Enterobacteriaceae strains resistant to tetracycline and doxycycline were sensitive to PTS and PTSO. Although studies are needed to verify their efficacy in vivo, the combined use of PTS and PTSO exhibits promise in enhancing bacterial sensitivity against S. pseudintermedius and Enterobacteriaceae infections, providing a first insight into the potential of both compounds in veterinary practice.
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Affiliation(s)
- Alba Maroto-Tello
- Departamento de Microbiología, DMC Research Center, 18620 Granada, Spain; (A.M.-T.); (M.A.A.-C.); (A.B.)
| | - Tania Ayllón
- Facultad de Ciencias de la Salud, Universidad Alfonso X el Sabio, 28691 Madrid, Spain
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Universidad Complutense, 28040 Madrid, Spain
| | | | - Juan José Ariza
- Departamento de Microbiología, Campus Fuente Nueva, Universidad de Granada, 18001 Granada, Spain;
| | - Silvia Penelo
- Servicio de Urgencias, Hospitalización y UCI, Hospital Clínico Veterinario Complutense, Universidad Complutense, 28040 Madrid, Spain
| | - Alberto Baños
- Departamento de Microbiología, DMC Research Center, 18620 Granada, Spain; (A.M.-T.); (M.A.A.-C.); (A.B.)
- Departamento de Microbiología, Campus Fuente Nueva, Universidad de Granada, 18001 Granada, Spain;
| | - Gustavo Ortiz-Díez
- Departamento de Medicina y Cirugía, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain;
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Si C, Nickerson K, Simmons T, Denton P, Nichols MR, Dysko RC, Hoenerhoff M, Mani R, Woods C, Henderson KS, Freeman ZT. Next-Generation Sequencing-Based Identification of Enterobacter hormaechei as Causative Agent of High Mortality Disease in NOD.Cg- PrkdcscidIl2rgtm1Wjl/SzJ (NSG) Mice. Toxicol Pathol 2024; 52:67-80. [PMID: 38477038 DOI: 10.1177/01926233241231286] [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] [Indexed: 03/14/2024]
Abstract
NOD.Cg-PrkdcscidIl2rgtm1Wjl/SzJ (NSG) mice, lacking many components of a mature immune system, are at increased risk of disease. General understanding of potential pathogens of these mice is limited. We describe a high mortality disease outbreak caused by an opportunistic bacterial infection in NSG mice. Affected animals exhibited perianal fecal staining, dehydration, and wasting. Histopathologic lesions included a primary necrotizing enterocolitis, with inflammatory and necrotizing lesions also occurring in the liver, kidneys, heart, and brain of some mice. All affected individuals tested negative for known opportunistic pathogens of immunodeficient mice. We initially identified a member of Enterobacter cloacae complex (ECC) in association with the outbreak by traditional diagnostics. ECC was cultured from extraintestinal organs, both with and without histopathologic lesions, suggesting bacteremia. Infrared spectroscopy and MALDI-TOF mass spectrometry demonstrated that isolates from the outbreak shared molecular features and likely a common origin. We subsequently hypothesized that advanced sequencing methods would identify a single species of ECC associated with clinical disease. Using a novel targeted amplicon-based next-generation sequencing assay, we identified Enterobacter hormaechei in association with this outbreak. Knowledge of this organism as a potential opportunistic pathogen in NSG mice is critical for preclinical studies to prevent loss of animals and confounding of research.
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Affiliation(s)
- Catherine Si
- University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | | | | | | | - Rinosh Mani
- Michigan State University, East Lansing, Michigan, USA
| | - Cheryl Woods
- Charles River Laboratories, Wilmington, Massachusetts, USA
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Zendri F, Isgren CM, Devaney J, Schmidt V, Rankin R, Timofte D. Resistome-based surveillance identifies ESKAPE pathogens as the predominant gram-negative organisms circulating in veterinary hospitals. Front Microbiol 2023; 14:1252216. [PMID: 37744932 PMCID: PMC10513425 DOI: 10.3389/fmicb.2023.1252216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/31/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction Healthcare-associated infections (HCAIs) associated with extended-spectrum cephalosporin-resistant gram-negative (ESC-R GN) bacteria are an emerging concern in veterinary hospitals, especially in companion animal intensive care units (ICUs). Methods To understand the molecular epidemiology of ESC-R GN isolates in two veterinary hospitals (equine and small animal), a 6-month pilot study was performed during which fecal and environmental samples were obtained twice from selected patients, upon ICU admission and after 48 h of hospitalization. In total, 295 ESC-R GNs were analyzed using the Acuitas Resistome® Test (OpGen, Maryland, US), a PCR-based assay screening for 50 antimicrobial resistance gene families encoding for production of extended-spectrum beta-lactamase (ESBLs), TEM/SHV/OXA or AmpC beta-lactamases and carbapenemases. Combining organism identification and antimicrobial susceptibility data to genotyping results, unique "Acuitas profiles" were generated that can be used for fast typing the isolates and tracking transmission events. Results ESKAPE GN pathogens were the most prevalent ESC-R GN isolates circulating in both the small animal and equine hospitals, consisting of Enterobacter cloacae complex (21.7%), Pseudomonas aeruginosa (20%), Klebsiella pneumoniae (15.9%), and Acinetobacter baumannii complex (13.6%) followed by Escherichia coli (12.2%), most harboring a combination of genes encoding for beta-lactamases and ESBLs. Some ESKAPE genotypes showed likely intra-hospital transmission, including E. cloacae (two genotypes, one carrying SHV4, SHV5, and TEM7 and the other TEM1, TEM3, and TEM7 enzymes) in the equine and K. pneumoniae (SHV1, SHV5, and DHA1-positive) in the small animal ICUs, respectively. Furthermore, P. aeruginosa (carrying OXA-50), A. baumannii complex (OXA-51), and E. coli (CTX-M-1) genotypes were isolated across both hospitals, suggesting possible transfer mediated via movement of staff and students. Importantly, isolates carrying transmissible resistance to last-resort antimicrobials (i.e. carbapenems) were identified within the hospital environments, consisting of three environmental Acinetobacter spp. harboring blaOXA - 23 and one clinical E. coli with blaOXA - 48. Conclusion We describe the widespread occurrence of ESKAPE gram-negative organisms in veterinary ICU patients and hospital environments. Findings from this project provide baseline data on the epidemiology of ESKAPE pathogens in veterinary settings, which can inform infection control policies to aid in patient management and prevent transmission of nosocomial infections associated with these pathogens.
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Affiliation(s)
- Flavia Zendri
- Department of Veterinary Anatomy, Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, United Kingdom
| | - Cajsa M. Isgren
- Western Counties Equine Hospital Ltd., Culmstock, United Kingdom
| | - Jane Devaney
- Department of Equine Clinical Science, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Leahurst Campus, Neston, United Kingdom
| | - Vanessa Schmidt
- Department of Small Animal Clinical Science, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Leahurst Campus, Neston, United Kingdom
| | - Rachel Rankin
- Department of Small Animal Clinical Science, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Leahurst Campus, Neston, United Kingdom
| | - Dorina Timofte
- Department of Veterinary Anatomy, Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Neston, United Kingdom
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Scarborough RO, Sri AE, Browning GF, Hardefeldt LY, Bailey KE. ‘Brave Enough’: A Qualitative Study of Veterinary Decisions to Withhold or Delay Antimicrobial Treatment in Pets. Antibiotics (Basel) 2023; 12:antibiotics12030540. [PMID: 36978407 PMCID: PMC10044613 DOI: 10.3390/antibiotics12030540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/11/2023] Open
Abstract
Veterinarians sometimes prescribe antimicrobials even when they know or suspect that they are unnecessary. The drivers of this behaviour must be understood to design effective antimicrobial stewardship interventions. Semi-structured interviews were conducted with 22 veterinarians who treated companion animals in Australia. The Theory of Planned Behaviour was used to organise interview themes, focusing on a decision to withhold antimicrobial therapy in the absence of a clear indication. Many background factors influenced antimicrobial-withholding decisions, including the veterinarian’s communication skills, general attitudes towards antimicrobial resistance (AMR), habits and energy levels. Client awareness of AMR and the veterinarian–client relationship were also important. Beliefs about the consequences of withholding antimicrobials (behavioural beliefs) were dominated by fears of the animal’s condition deteriorating and of failing to meet client expectations. These fears, weighed against the seemingly distant consequences of AMR, were major barriers to withholding antimicrobials. Normative beliefs were primarily focused on the expected approval (or disapproval) of the client and of other veterinarians. Control beliefs about the difficulty of withholding antimicrobials centred around client factors, most importantly, their capacity to adequately monitor their animal, to pay for further investigations, or to undertake non-antimicrobial management, such as wound care, at home. The use of antimicrobials by companion animal veterinarians in the absence of a clear indication is often powerfully driven by behavioural beliefs, chiefly, fears of clinical deterioration and of failing to meet client expectations.
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Affiliation(s)
- Ri O. Scarborough
- Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3010, Australia
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Parkville, VIC 3052, Australia
- Correspondence:
| | - Anna E. Sri
- Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3010, Australia
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Parkville, VIC 3052, Australia
| | - Glenn F. Browning
- Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3010, Australia
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Parkville, VIC 3052, Australia
| | - Laura Y. Hardefeldt
- Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3010, Australia
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Parkville, VIC 3052, Australia
| | - Kirsten E. Bailey
- Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3010, Australia
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Parkville, VIC 3052, Australia
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Machado IC, Nunes T, Maximino M, Malato J, Tavares L, Almeida V, Sepúlveda N, Gil S. Epidemiologic Factors Supporting Triage of Infected Dog Patients Admitted to a Veterinary Hospital Biological Isolation and Containment Unit. Vet Sci 2023; 10:vetsci10030186. [PMID: 36977225 PMCID: PMC10057909 DOI: 10.3390/vetsci10030186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
The teaching hospital of the Faculty of Veterinary Medicine at the University of Lisbon hosts a Biological Isolation and Containment Unit (BICU) for the hospitalization of both confirmed and suspected animals of an infectious disease. This study targets the BICU dog population to identify and characterize the most frequent infectious diseases recorded in a 7-year period. Several epidemiologic factors were analyzed for their significance to triage infected cases. During the study period, 534 dogs were admitted, of which 263 (49.3%) had a confirmed infectious disease diagnosis: parvovirosis (49.4%; n = 130); leptospirosis (21.7%; n = 57); multidrug-resistant (MDR) bacterial infection; (10.6%; n = 28), and canine distemper (9.9%; n = 26). Several potential risk factors for these diseases were identified: age under 2 years old (p < 0.001), incomplete vaccination for parvovirosis (p < 0.001), age ≥ 10 years old (p < 0.001), and the presence of concomitant disorders for MDR-infected cases (p = 0.03). Logistic regression models were constructed to classify cases and controls. The sensitivity and specificity estimates were very high (>0.83) for parvovirosis, MDR, and distemper infections. A lower sensitivity (0.77) was obtained for identifying cases with leptospirosis. In conclusion, infectious diseases are frequent, hence, it is essential to decrease their occurrence through effective preventive measures such as vaccination. The constructed logistic models can also help in triaging admitted dogs with a potential infectious disease.
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Affiliation(s)
- Inês Cunha Machado
- Teaching Hospital, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Telmo Nunes
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Miguel Maximino
- Teaching Hospital, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
| | - João Malato
- Instituto de Medicina Molecular (IMM), Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
- Centro de Estatística e Aplicações da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Luís Tavares
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Virgilio Almeida
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Nuno Sepúlveda
- Centro de Estatística e Aplicações da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Faculty of Mathematics and Information Science, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
| | - Solange Gil
- Teaching Hospital, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Av. Universidade Técnica, 1300-477 Lisboa, Portugal
- Faculty of Veterinary Medicine, University of Lisbon, Av. Universidade Técnica, 1300-477 Lisbon, Portugal
- Correspondence: ; Tel.: +48-351213652800
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Courtice R, Sniatynski M, Rubin JE. Characterization of antimicrobial-resistant Escherichia coli causing urinary tract infections in dogs: Passive surveillance in Saskatchewan, Canada 2014 to 2018. J Vet Intern Med 2021; 35:1389-1396. [PMID: 33751667 PMCID: PMC8162607 DOI: 10.1111/jvim.16103] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Urinary tract infections (UTIs) are common in dogs and can be caused by multidrug-resistant Escherichia coli (E coli). OBJECTIVE To describe the frequency and mechanisms of antimicrobial resistance (AMR) among E coli causing UTIs in dogs in Western Canada during a 4-year surveillance period. ANIMALS Urine from 516 dogs. METHODS From November 2014 to 2018, 516 nonduplicate E coli isolates from the urine of dogs were collected from a diagnostic laboratory. Susceptibility testing was determined for a panel of 14 antimicrobials belonging to 7 drug classes. Resistant isolates were screened for the presence of extended-spectrum beta-lactamases (ESBLs), AmpC β-lactamases, and plasmid-mediated quinolone resistance (PMQR) genes. Epidemiological relationships were assessed by MLST. RESULTS 80.2% (414/516) of isolates were susceptible to all antimicrobials tested. There was no significant increase in the proportion of isolates resistant to any of the tested antimicrobials during the study period. Resistance to ampicillin was the most common (14.9%, 77/516). Overall, 12 isolates had blaCMY-2 -type AmpC β-lactamases, and 7 produced CTX-M-type ESBLs. A single isolate had the aac(6')-Ib-cr PMQR gene. The qnr and qepA determinants were not detected. A single isolate belonging to the pandemic lineage ST131 was identified. CONCLUSION Escherichia coli isolated from the urine of dogs in our region remain susceptible to first-line therapies, though resistance, particularly to the aminopenicillins, warrants monitoring. This is the first description of E coli ST131 from a companion animal in Canada.
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Affiliation(s)
- Rachel Courtice
- Department of Veterinary Microbiology, Western College of Veterinary MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
- Canadian Food Inspection AgencySaskatoonSaskatchewanCanada
| | - Michelle Sniatynski
- Department of Veterinary Microbiology, Western College of Veterinary MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Joseph E. Rubin
- Department of Veterinary Microbiology, Western College of Veterinary MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
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Pezzanite LM, Griffenhagen GM, Krause DM, Hendrickson DA. Retrospective evaluation of association between perioperative antimicrobial protocol and complications following elective equine synovial endoscopy. Vet Med Sci 2021; 7:609-620. [PMID: 33595201 PMCID: PMC8136966 DOI: 10.1002/vms3.447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 01/06/2021] [Accepted: 01/23/2021] [Indexed: 12/12/2022] Open
Abstract
Background Prophylactic perioperative antimicrobial protocols in equine synovial endoscopy have been described but not compared with respect to post‐operative outcomes and complications. Increasing antimicrobial resistance in equine practice and interest in promoting judicious use of antimicrobials has prompted reevaluation of drug selection and dosing strategies. Objectives To determine the frequency of and compare post‐operative complications following elective synovial endoscopy between horses receiving different perioperative antimicrobial protocols. Methods Records from the Colorado State University Veterinary Teaching Hospital were evaluated (2014–2018) and equine patients undergoing elective synovial endoscopy were identified. Patients undergoing endoscopy for sepsis or internal fixation were excluded. Patient signalment, clinician, joint and limb involved, perioperative antimicrobial regimen, number endoscopic portals and closure technique, and post‐operative complications including incidence of joint infection were recorded. Generalized linear models were used to estimate the odds of post‐operative complications. Results Elective synovial endoscopies of 516 horses in 537 procedures evaluating 761 synovial structures were performed. No horses developed post‐operative septic synovitis. Administration of post‐operative antimicrobials, type used and patient sex were all significantly associated with increased risk of complications, which were predominantly gastrointestinal‐related. Complication rates in horses receiving a single preoperative dose of cefazolin were lower than in horses receiving potassium penicillin, gentamicin or multiple doses. Complication rates were lower in females compared to castrated or intact males. Other factors evaluated (breed, age, surgeon, anaesthesia duration or hospitalization, joint/limb operated, number endoscopic portals) were not associated with increased risk of complications post‐operatively in this case population. Conclusions Prophylactic perioperative antimicrobial protocols in equine practice deserve periodic reconsideration due to increased antimicrobial resistance. Prolonged antimicrobial usage beyond the time of surgery was unnecessary to prevent septic synovitis following synovial endoscopy in this case population and was furthermore associated with an increased risk of gastrointestinal complications.
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Affiliation(s)
- Lynn M Pezzanite
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, CO, USA
| | - Gregg M Griffenhagen
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, CO, USA
| | - Danielle M Krause
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, CO, USA
| | - Dean A Hendrickson
- Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, CO, USA
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Papich MG. Antimicrobial agent use in small animals what are the prescribing practices, use of PK-PD principles, and extralabel use in the United States? J Vet Pharmacol Ther 2020; 44:238-249. [PMID: 33098148 DOI: 10.1111/jvp.12921] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/01/2020] [Accepted: 10/05/2020] [Indexed: 12/28/2022]
Abstract
In this review, the availability and deficiencies of current antimicrobial agents for companion animals in the United States are described. Although several active agents are FDA-approved for small animals, there are many unmet needs. These needs are greatest for cats, for the treatment of antibiotic drug-resistant infections, and to treat new or emerging pathogens that were not considered on older labels. The older agents approved before 1997 are often outdated, unavailable, or have inaccurate labeling. Subsequently, veterinarians treat dogs and cats with many unapproved antimicrobial agents that are licensed for human use. Although these drugs may be effective, there are also concerns that this use can produce drug-resistant bacteria that may be a public health risk. Although this concern is real, there is also evidence that any antimicrobial use in small animals can produce resistant fecal bacteria and stewardship principles should aim at reducing any unnecessary antibiotic use. This could be accomplished by avoiding some of the older, ineffective, or outdated agents described in this paper. There is a need for incentives to approve new agents that will be more appropriate for treating infections in companion animals without increasing the risk of drug-resistant bacteria that could potentially be transferred to humans and the environment and create a public health risk.
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Affiliation(s)
- Mark G Papich
- College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
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Taggar G, Attiq Rheman M, Boerlin P, Diarra MS. Molecular Epidemiology of Carbapenemases in Enterobacteriales from Humans, Animals, Food and the Environment. Antibiotics (Basel) 2020; 9:antibiotics9100693. [PMID: 33066205 PMCID: PMC7602032 DOI: 10.3390/antibiotics9100693] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 12/31/2022] Open
Abstract
The Enterobacteriales order consists of seven families including Enterobacteriaceae, Erwiniaceae, Pectobacteriaceae, Yersiniaceae, Hafniaceae, Morganellaceae, and Budviciaceae and 60 genera encompassing over 250 species. The Enterobacteriaceae is currently considered as the most taxonomically diverse among all seven recognized families. The emergence of carbapenem resistance (CR) in Enterobacteriaceae caused by hydrolytic enzymes called carbapenemases has become a major concern worldwide. Carbapenem-resistant Enterobacteriaceae (CRE) isolates have been reported not only in nosocomial and community-acquired pathogens but also in food-producing animals, companion animals, and the environment. The reported carbapenemases in Enterobacteriaceae from different sources belong to the Ambler class A (blaKPC), class B (blaIMP, blaVIM, blaNDM), and class D (blaOXA-48) β-lactamases. The carbapenem encoding genes are often located on plasmids or associated with various mobile genetic elements (MGEs) like transposons and integrons, which contribute significantly to their spread. These genes are most of the time associated with other antimicrobial resistance genes such as other β-lactamases, as well as aminoglycosides and fluoroquinolones resistance genes leading to multidrug resistance phenotypes. Control strategies to prevent infections due to CRE and their dissemination in human, animal and food have become necessary. Several factors involved in the emergence of CRE have been described. This review mainly focuses on the molecular epidemiology of carbapenemases in members of Enterobacteriaceae family from humans, animals, food and the environment.
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Affiliation(s)
- Gurleen Taggar
- Guelph Research and Development Center, Agriculture and Agri-Food Canada (AAFC), 93, Stone Road West, Guelph, ON N1G 5C6, Canada; (G.T.); (M.A.R.)
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Muhammad Attiq Rheman
- Guelph Research and Development Center, Agriculture and Agri-Food Canada (AAFC), 93, Stone Road West, Guelph, ON N1G 5C6, Canada; (G.T.); (M.A.R.)
| | - Patrick Boerlin
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Moussa Sory Diarra
- Guelph Research and Development Center, Agriculture and Agri-Food Canada (AAFC), 93, Stone Road West, Guelph, ON N1G 5C6, Canada; (G.T.); (M.A.R.)
- Correspondence:
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10
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Wood MW, Lepold A, Tesfamichael D, Lasarev MR. Risk factors for enterococcal bacteriuria in dogs: A retrospective study. J Vet Intern Med 2020; 34:2447-2453. [PMID: 33009682 PMCID: PMC7694861 DOI: 10.1111/jvim.15916] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 08/26/2020] [Accepted: 09/17/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND In humans, Enterococcus spp. urinary tract infections (UTI) are commonly associated with urinary catheter-induced urothelial inflammation but this is not the case in dogs. HYPOTHESIS/OBJECTIVES To identify risk factors predisposing dogs to enterococcal bacteriuria. ANIMALS Seventy dogs with Enterococcus spp. bacteriuria (case) and 70 dogs with Enterococcus coli bacteriuria (control). METHODS A single center retrospective case-control study with subjects and controls identified by a medical records search for Enterococcus spp. (subject) or E coli (control) bacteriuria from January 1, 2014 to December 31, 2017. Cases and controls were balanced with respect to average age and weight. Binary logistic regression was used to estimate and test whether the odds of having Enterococcus spp. bacteriuria (instead of E coli) were associated with the presence of any given characteristic. RESULTS A history of recurrent bacteriuria was significantly more common in Enterococcus spp. cases than in E coli controls (odds ratio [OR]: 2.07; 95% confidence interval [CI]: 1.04-4.16, P = .04). Comorbidities associated with the presence of Enterococcus spp. bacteriuria included lower urinary tract (LUT) anatomic abnormalities (OR: 2.94; 95% CI: 1.17-8.10, P = .02), urolithiasis (P = .01), and the presence of LUT neoplasia (P = .04). Small frequencies (n = 12 and n = 6, respectively) compromise our ability to precisely estimate the genuine OR for the latter 2 characteristics. CONCLUSIONS AND CLINICAL IMPORTANCE If the identified risk factors promote Enterococcus spp. colonization in dogs via induced LUT inflammation similar to people then Enterococcus spp. bacteriuria could be a sentinel for underlying LUT inflammation.
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Affiliation(s)
- Michael W Wood
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Adam Lepold
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Dahlia Tesfamichael
- College of Letters and Science, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Michael R Lasarev
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
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11
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Harrer J, Dorsch R. [Bacterial urinary tract infection and subclinical bacteriuria in the dog: a current review]. TIERAERZTLICHE PRAXIS AUSGABE KLEINTIERE HEIMTIERE 2020; 48:270-284. [PMID: 32823350 DOI: 10.1055/a-1220-1950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bacterial urinary tract infection (UTI) is a common clinical presentation in dogs and a frequent reason for the prescription of antimicrobial drugs. UTI refers to adherence, multiplication and persistence of an infectious agent within the urogenital system. This causes an associated inflammatory response as well as the pertaining clinical signs. Depending on the site of infection, UTI's may be classified as bacterial cystitis, prostatitis or pyelonephritis. In contrast, subclinical bacteriuria (SB) is defined as the presence of a significant number of bacteria in the urine of an individual not showing clinical signs referrable to UTI. UTI's typically occur as a consequence of ascending pathogen migration from the host's own fecal or distal urogenital microbial flora. The most commonly isolated pathogen in cases of UTI and SB is Escherichia coli. The diagnosis is based on clinical signs and the results of urine examination and culture. The recently revised guidelines of the International Society for Companion Animal Infectious Diseases provide detailed recommendations for diagnosis and management of different forms of bacterial UTI's in dogs. Adherence to treatment guidelines will improve treatment success and is imperative in avoiding further deterioration of the antimicrobial resistance situation.
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Affiliation(s)
- Julia Harrer
- Medizinische Kleintierklinik, Ludwig-Maximilians-Universität München
| | - Roswitha Dorsch
- Medizinische Kleintierklinik, Ludwig-Maximilians-Universität München
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12
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Corsini C, Silva V, Carvalho O, Sepúlveda R, Valente F, Reis E, Moreira M, Silva Júnior A, Borges A. Emergence of multidrug-resistant bacteria isolated from surgical site infection in dogs and cats. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-10978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Surgical site infections (SSIs) and antimicrobial resistance among pathogens causing SSI are a growing concern in veterinary hospitals. One major reason, the widespread use of antimicrobials, has led to increased incidence of SSIs. This study identified bacteria and resistance profiles to antimicrobials in the SSI cases diagnosed at the Surgical Clinic of Small Animals in the Veterinary Hospital, Federal University of Viçosa, Brazil. The main genus identified was Staphylococcus, followed by Escherichia, Enterococcus, Bacillus, Shigella, Citrobacter, Proteus, Morganella, Serratia, Enterobacter, Pseudomonas and Klebsiella were also found, but in small number. The results indicated the predominance of Gram-negative bacteria among the collected samples. Most of isolates identified were resistant to more than one of the following antimicrobials: ampicillin, tetracycline, enrofloxacin, amoxicillin/clavulanic acid and cephalotin. Of the 17 Staphylococcus sp. isolates, two (11.8%) were methicillin-resistant Staphylococcus aureus (MRSA) and 11 (64.7%) of them were methicillin-resistant Staphylococcus pseudintermedius (MRSP). There were bacterial genera identified with resistance to all tested antimicrobials in different proportions. This should alert veterinary hospitals to the emergence of multidrug-resistant bacteria and to the requirement for the revision of surgical protocols with regard to antimicrobial prophylaxis and therapy.
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13
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Johnstone T. A clinical approach to multidrug-resistant urinary tract infection and subclinical bacteriuria in dogs and cats. N Z Vet J 2019; 68:69-83. [PMID: 31707934 DOI: 10.1080/00480169.2019.1689196] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Multidrug-resistant bacteria are increasingly isolated from the urinary tract of pets, particularly those that suffer from concurrent conditions, have been hospitalised, or were treated with antimicrobials in the recent past. Many of the multidrug-resistant bacteria encountered are resistant to all commonly used oral antibiotics. This poses both a therapeutic dilemma in the individual pet and a threat to public health. This article begins with an overview of multidrug resistance in organisms that are commonly isolated from the urinary tract of pets. This is followed by a proposed clinical approach to managing multidrug-resistant urinary bacteria, which summarises current knowledge regarding appropriate sampling and analysis, reviews the current guidelines regarding appropriate antimicrobial use and discusses treatment options that might be considered. The article highlights several shortcomings of the current knowledge to be considered when planning future clinical research and developing policies.
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Affiliation(s)
- T Johnstone
- Translational Research and Animal Clinical Trial Study Group, U-Vet Animal Hospital, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Werribee, Australia
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14
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Hardefeldt LY. Dosing equine antimicrobials: Ensuring clinical success and avoiding antimicrobial resistance. EQUINE VET EDUC 2019. [DOI: 10.1111/eve.13190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- L. Y. Hardefeldt
- Asia‐Pacific Centre for Animal Health Melbourne Veterinary School Department of Veterinary Biosciences Faculty of Veterinary and Agricultural Sciences University of Melbourne Parkville Victoria Australia
- National Centre for Antimicrobial Stewardship Peter Doherty Institute Carlton Victoria Australia
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15
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McGovern DA, Gaschen F, Habil D, Roy A. Antimicrobial Susceptibility Patterns and Clinical Parameters in 208 Dogs with Positive Urine Cultures (2012-2014). J Am Anim Hosp Assoc 2019; 55:306-313. [PMID: 31525091 DOI: 10.5326/jaaha-ms-6796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Urinary tract infections (UTI) occur commonly in dogs, and gram-negative enteric bacteria are the most prevalent pathogens. Clinical parameters, urinalysis, and urine culture and sensitivity results were retrieved from the medical records of 208 dogs with positive urine cultures over a 3 yr period at the Louisiana State University Veterinary Teaching Hospital. Several groups were defined including dogs presented for primary care versus referred cases; simple UTI, complicated UTI, and pyelonephritis; dogs pretreated with antimicrobials; and dogs having an indwelling catheter in place prior to sampling. Nearly 80% of dogs had complicated UTI. Of all dogs, 70% had no documented clinical signs of lower urinary tract disease (LUTD), with 68% of them showing hematuria and/or pyuria. Based on clinical signs or urinalysis, 19% of all dogs had no evidence of lower UTI. In dogs without LUTD signs the most common comorbidities were immunosuppressive treatment and severely restricted mobility (23%). Chronic recurring UTI were present in 19% of dogs with LUTD signs. Distribution of bacterial species was comparable with the existing literature and not significantly different between clinical subgroups. Isolates from dogs pretreated with antimicrobials showed decreased susceptibility to enrofloxacin. The prevalence of multidrug-resistant Escherichia coli and Staphylococcus spp. was moderate (29%).
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Affiliation(s)
- Diana A McGovern
- From Affiliated Veterinary Specialists, Orlando, Florida (D.A.M.); Department of Veterinary Clinical Sciences (F.G.), and Department of Pathobiological Sciences (A.R.), Louisiana State University School of Medicine, Baton Rouge, Louisiana
| | - Frédéric Gaschen
- From Affiliated Veterinary Specialists, Orlando, Florida (D.A.M.); Department of Veterinary Clinical Sciences (F.G.), and Department of Pathobiological Sciences (A.R.), Louisiana State University School of Medicine, Baton Rouge, Louisiana
| | - Dr Habil
- From Affiliated Veterinary Specialists, Orlando, Florida (D.A.M.); Department of Veterinary Clinical Sciences (F.G.), and Department of Pathobiological Sciences (A.R.), Louisiana State University School of Medicine, Baton Rouge, Louisiana
| | - Alma Roy
- From Affiliated Veterinary Specialists, Orlando, Florida (D.A.M.); Department of Veterinary Clinical Sciences (F.G.), and Department of Pathobiological Sciences (A.R.), Louisiana State University School of Medicine, Baton Rouge, Louisiana
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16
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Qekwana DN, Phophi L, Naidoo V, Oguttu JW, Odoi A. Antimicrobial resistance among Escherichia coli isolates from dogs presented with urinary tract infections at a veterinary teaching hospital in South Africa. BMC Vet Res 2018; 14:228. [PMID: 30064417 PMCID: PMC6069546 DOI: 10.1186/s12917-018-1552-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 07/24/2018] [Indexed: 11/21/2022] Open
Abstract
Background This study investigated the burden and predictors of canine E. coli urinary tract infections (UTI) and antimicrobial resistance among dogs presented at a veterinary teaching hospital in South Africa, 2007–2012. Methods The Cochran-Armitage trend test was used to investigate temporal trends while logistic regression models were used to investigate predictors (age, sex, breed, year) of E. coli infections and antimicrobial resistance (AMR). Results A total of 22.3% (168/755) of the urinary specimens tested positive for E. coli. A significant (p = 0.0004) decreasing temporal trend in the percentage of E. coli positive isolates was observed over the study period. There were high levels of AMR to penicillin-G (99%), clindamycin (100%), tylosine (95%), cephalothin (84%) but relatively low levels of resistance to enrofloxacin (16%), orbifloxacin (21%). Almost all (98%, 164/167) the isolates exhibited multidrug resistance (MDR), while only 11% (19/167) and 2% (4/167) exhibited extensive drug resistance (XDR) and pan-drug resistance (PDR), respectively. Conclusions Although, the risk of E. coli UTI declined during the study period, the risk of AMR increased. The high levels of AMR and MDR as well as the presence of XDR and PDR is concerning as these have the potential of affecting prognosis of UTI treatments.
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Affiliation(s)
- Daniel Nenene Qekwana
- Section Veterinary Public Health, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Lufuno Phophi
- Section Veterinary Public Health, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Vinny Naidoo
- Biomedical Research Centre (UPBRC), Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - James Wabwire Oguttu
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Johannesburg, South Africa
| | - Agricola Odoi
- Section Veterinary Public Health, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa. .,Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, USA.
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17
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A review of local antibiotic implants and applications to veterinary orthopaedic surgery. Vet Comp Orthop Traumatol 2017; 26:251-9. [DOI: 10.3415/vcot-12-05-0065] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 01/27/2013] [Indexed: 11/17/2022]
Abstract
SummaryIn the face of increasing incidence of multidrug resistant implant infections, local antibiotic modalities are receiving increased attention for both infection prophylaxis and treatment. Local antibiotic therapy that achieves very high antibiotic drug concentrations at the site of the implant may represent an avenue for treatment of biofilmforming bacterial pathogens. Randomized controlled trials in human patients have demonstrated an infection risk reduction when antibiotic-impregnated cement is used for infection prophylaxis in implanted joint prostheses, and when a gentamicin-impregnated collagen sponge is used for infection prophylaxis in midline sternotomy. The other modalities discussed have for the most part yet to be evaluated in randomized controlled trials in veterinary or human patients. In general, the in vivo pharmacokinetics and appropriate dosing profiles for local antibiotic modalities have yet to be elucidated. Toxicity is possible, and attention to the dose applied is warranted.
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18
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Cerreta AJ, Papich MG, Dise DR, Lewbart GA. Diagnosis and treatment of a multidrug‐resistant
Escherichia coli
in a wild eastern box turtle (
Terrapene carolina carolina
). VETERINARY RECORD CASE REPORTS 2017. [DOI: 10.1136/vetreccr-2017-000528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Anthony J Cerreta
- Department of Clinical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Mark G Papich
- Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Delta R Dise
- Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Gregory A Lewbart
- Department of Clinical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
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19
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Saputra S, Jordan D, Mitchell T, Wong HS, Abraham RJ, Kidsley A, Turnidge J, Trott DJ, Abraham S. Antimicrobial resistance in clinical Escherichia coli isolated from companion animals in Australia. Vet Microbiol 2017; 211:43-50. [PMID: 29102120 DOI: 10.1016/j.vetmic.2017.09.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 10/18/2022]
Abstract
Multidrug-resistant (MDR) Escherichia coli have become a major public health concern to both humans and animal health. While the frequency of antimicrobial resistance (AMR) in clinical E. coli is monitored regularly in human medicine, current frequency of AMR in companion animals remains unknown in Australia. In this study we conducted antimicrobial susceptibility testing (AST) and where possible, determined potential risk factors for MDR infection among 883 clinical Escherichia coli isolated from dogs (n=514), cats (n=341) and horses (n=28). AST was undertaken for 15 antimicrobial agents according to the Clinical Laboratory Standards Institute (CLSI) guidelines and interpreted using epidemiological cut-off values (ECOFFs) as well as CLSI veterinary and human clinical breakpoints. The AST revealed complete absence of resistance to carbapenems while resistance to amikacin was observed at a low level in isolates from dogs (1.6%) and cats (1.5%) compared to horses (10.7%). Among dog isolates, resistance to fluoroquinolones ranged from 9.1%-9.3% whereas among cat isolates, it ranged from 3.2%-5%. Among dog isolates, the proportion showing a 3rd generation cephalosporin (3GC) non-wild type phenotype was significantly higher (P<0.05) in skin and soft tissue infection (SSTI, n=122) isolates (17.2%-20.5%) compared to urinary tract infection (UTI, n=392) isolates (9.9%-10.2%). The frequency of multidrug resistance was 18.1%, 11.7% and 42.9% in dog, cat and horse isolates, respectively. Risk factor analysis revealed that MDR E. coli isolated from UTI were positively associated with chronicity of infection and previous antimicrobial treatment. Dogs and cats with chronic UTI that had been previously treated with antimicrobials were eight times and six times more likely to be infected with MDR E. coli compared to dogs and cats with non-chronic UTI, and no history of antimicrobial treatment, respectively. This study revealed that pre-existing disease condition and prior antimicrobial use were the major risks associated with UTI with MDR E. coli in companion animals.
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Affiliation(s)
- Sugiyono Saputra
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia; Research Center for Biology, Indonesian Institute of Sciences, Cibinong, West Java, Indonesia
| | - David Jordan
- New South Wales Department of Primary Industries, Wollongbar, NSW, Australia
| | - Tahlia Mitchell
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - Hui San Wong
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - Rebecca J Abraham
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia; Antimicrobial Resistance and Infectious Diseases Laboratory, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - Amanda Kidsley
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - John Turnidge
- Australian Commission on Safety and Quality in Health Care, Sydney, NSW, Australia
| | - Darren J Trott
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia.
| | - Sam Abraham
- Antimicrobial Resistance and Infectious Diseases Laboratory, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia.
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20
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Hardefeldt LY, Browning GF, Thursky K, Gilkerson JR, Billman-Jacobe H, Stevenson MA, Bailey KE. Antimicrobials used for surgical prophylaxis by companion animal veterinarians in Australia. Vet Microbiol 2017; 203:301-307. [PMID: 28619161 DOI: 10.1016/j.vetmic.2017.03.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 01/07/2023]
Abstract
Antimicrobials are widely used in veterinary practices, but there has been no investigation into the classes of antimicrobials used or the appropriateness of their use in surgical prophylaxis. Antimicrobial usage guidelines were published by the Australian Infectious Disease Advisory Panel (AIDAP) in 2013, but there has been no investigation of compliance with them. This study aimed to investigate antimicrobial use for surgical prophylaxis in companion animal practice and assess compliance with AIDAP guidelines for selected conditions by conducting a cross-sectional study of antimicrobial usage patterns of Australian veterinarians using an online questionnaire. Information solicited included: details of the respondent, the frequency with which antimicrobials were used for specific surgical conditions (including dose and duration) and practice antimicrobial use policies and sources of information about antimicrobial drugs and their uses. A total of 886 members of the Australian veterinary profession completed the survey. Few (22%) reported that their practice that had an antimicrobial use policy. Generally, the choice of antimicrobial drug was appropriate for the given surgical conditions. There was poor compliance with AIDAP guidelines for non-use of antimicrobials for routine neutering. Veterinarians caring solely for companion animals had higher odds of optimal compliance with guidelines than veterinarians in mixed species practices (OR 1.4, 95%CI 1.1-1.9). Recent graduates (>2011) had lower odds of compliance than older graduates (OR 0.8, 95%CI 0.6-0.9). The findings suggest that antimicrobial use guidelines need to be expanded and promoted to improve the responsible use of antimicrobials in small animal practice in Australia.
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Affiliation(s)
- Laura Y Hardefeldt
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.
| | - Glenn F Browning
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Karin Thursky
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Grattan St., Parkville, Victoria Australia
| | - James R Gilkerson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Helen Billman-Jacobe
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Mark A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Kirsten E Bailey
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
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21
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Sabbioni A, Ferrario C, Milani C, Mancabelli L, Riccardi E, Di Ianni F, Beretti V, Superchi P, Ossiprandi MC. Modulation of the Bifidobacterial Communities of the Dog Microbiota by Zeolite. Front Microbiol 2016; 7:1491. [PMID: 27713735 PMCID: PMC5031887 DOI: 10.3389/fmicb.2016.01491] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 09/07/2016] [Indexed: 01/02/2023] Open
Abstract
During last decades canine health and well being is becoming an important issue for human owners. In dogs, several factors including diet, pathogenic bacterial and stress conditions can affect the composition of the gut microbiota. In this study, we evaluated the effect of dietary chabazitic zeolitite (CZ) supplementation on the contribution of bifidobacteria to the fecal microbiota in training hunting dogs. Fecal microbiota cataloging based on 16S rRNA microbial profiling analyses highlighted an increase of Lactobacillus and Bifidobacterium in animals treated with CZ, with a simultaneous decrease of pathogens associated with dog gastrointestinal infections, such as Klebsiella and Enterobacter. A detailed profiling of the bifidobacterial population of dogs receiving CZ based on the ITS-based sequencing approach, revealed an enhancement bifidobacterial of species typical of animals such as Bifidobacterium animalis and B. pseudolongum. Moreover, these analyses identified the occurrence of putative new bifidobacterial taxa in both treated and untreated samples.
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Affiliation(s)
- Alberto Sabbioni
- Department of Veterinary Medical Science, University of ParmaParma,Italy
| | - Chiara Ferrario
- Laboratory of Probiogenomics, Department of Life Sciences, University of ParmaParma, Italy
| | - Christian Milani
- Laboratory of Probiogenomics, Department of Life Sciences, University of ParmaParma, Italy
| | - Leonardo Mancabelli
- Laboratory of Probiogenomics, Department of Life Sciences, University of ParmaParma, Italy
| | - Enzo Riccardi
- Department of Veterinary Medical Science, University of ParmaParma,Italy
| | - Francesco Di Ianni
- Department of Veterinary Medical Science, University of ParmaParma,Italy
| | - Valentino Beretti
- Department of Veterinary Medical Science, University of ParmaParma,Italy
| | - Paola Superchi
- Department of Veterinary Medical Science, University of ParmaParma,Italy
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22
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Wong C, Epstein SE, Westropp JL. Antimicrobial Susceptibility Patterns in Urinary Tract Infections in Dogs (2010-2013). J Vet Intern Med 2015; 29:1045-52. [PMID: 26133165 PMCID: PMC4895361 DOI: 10.1111/jvim.13571] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 04/21/2015] [Accepted: 05/14/2015] [Indexed: 11/27/2022] Open
Abstract
Background Urinary tract infections (UTIs) are common in dogs. The responsible bacterial populations have evolved with increasing resistance to many antimicrobials. Objective To characterize the antimicrobial susceptibility patterns of canine urinary tract isolates over a 51‐month period. Animals One thousand six hundred and thirty‐six bacterial isolates from 1,028 dogs. Methods Aerobic bacterial isolate growth and susceptibility data from urine cultures of dogs were identified, retrospectively. Medical records were reviewed to obtain signalment, comorbidities, and antimicrobial use in the previous 30 days. The UTIs were further categorized as uncomplicated, complicated, or pyelonephritis. Results Common bacterial isolates identified were Escherichia coli (52.5%), Staphylococcus spp. (13.6%), and Enterococcus spp. (13.3%). In vitro susceptibility among all isolates varied for commonly prescribed antimicrobials (amoxicillin [59%], amoxicillin/clavulanic acid [76%], cephalexin [66%], enrofloxacin [74%] and trimethoprim‐sulfamethoxazole [86%]). For all antimicrobials tested (except aminoglycosides), in vitro susceptibility was higher in uncomplicated versus complicated infections (P < .05). Uncomplicated infection isolate susceptibility rates remained ≤90% for PO administered antimicrobials. Administration of amoxicillin, doxycycline, and enrofloxacin, but not amoxicillin/clavulanic acid in the previous 30 days was associated with resistance to that antimicrobial. Multidrug resistant isolates of E. coli and Staphylococcus spp. were more common in dogs with complicated than uncomplicated UTIs (36% versus 21%, P < .0001). Conclusions and Clinical Importance In vitro susceptibility was highly variable and no PO administered antimicrobial had >90% efficacy among isolates tested. Multidrug resistance was frequent among isolates tested suggesting that routine culture and susceptibility testing is indicated. Previously prescribed antimicrobials may affect empirical choices made pending susceptibility testing.
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Affiliation(s)
- C Wong
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA
| | - S E Epstein
- Department of Veterinary Surgical and Radio-logical Sciences, School of Veterinary Medicine, University of California, Davis, CA
| | - J L Westropp
- Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA
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23
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Budreckis DM, Byrne BA, Pollard RE, Rebhun RB, Rodriguez CO, Skorupski KA. Bacterial urinary tract infections associated with transitional cell carcinoma in dogs. J Vet Intern Med 2015; 29:828-33. [PMID: 25940672 PMCID: PMC4895418 DOI: 10.1111/jvim.12578] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 12/13/2014] [Accepted: 02/23/2015] [Indexed: 12/05/2022] Open
Abstract
Background Urinary tract infections (UTI) are believed to be common in dogs with transitional cell carcinoma (TCC), but incidence and contributing factors have not been reported. Objectives To determine the frequency and bacterial agents associated with UTI in dogs with TCC and define contributing factors. Animals Eighty‐five dogs with a history of urogenital TCC undergoing treatment with chemotherapy that had at least 1 urine culture performed. Methods Medical records and culture results were retrospectively reviewed and ultrasound images were reviewed when available. Clinical factors were evaluated statistically for association with positive culture. Results Fifty‐five percent (47/85) of dogs had at least 1 positive culture during the course of treatment. Female dogs (80%, 40/50) were more likely than male dogs (29%, 10/35) to have at least 1 positive culture. Ultrasound examination determined that female dogs were more likely to have urethral (74%, 31/42) or trigonal tumor involvement (71%, 30/42) compared to male dogs (32%, 9/28 and 43%, 12/28, respectively). The most commonly isolated organisms were Staphylococcus spp. (23.9%, 29/121) and Escherichia coli (19.8%, 24/121). Dogs with urethral involvement of TCC were significantly more likely to have at least 1 positive culture than dogs without urethral involvement (75%, 30/40 versus 30%, 9/30). Conclusions Urinary tract infection is common in dogs with TCC highlighting the importance of regular monitoring for bacterial cystitis in dogs with TCC. In addition, clinical factors such as tumor location and sex may be predictive of positive culture and can help clinicians assess the risk of UTI.
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Affiliation(s)
- D M Budreckis
- Veterinary Medical Teaching Hospital, Center for Companion Animal Health, University of California, Davis, CA
| | - B A Byrne
- Department of Clinical Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA
| | - R E Pollard
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA
| | - R B Rebhun
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA
| | - C O Rodriguez
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA
| | - K A Skorupski
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA
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Labro MT, Bryskier JM. Antibacterial resistance: an emerging ‘zoonosis’? Expert Rev Anti Infect Ther 2014; 12:1441-61. [DOI: 10.1586/14787210.2014.976611] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Hamilton E, Kruger JM, Schall W, Beal M, Manning SD, Kaneene JB. Acquisition and persistence of antimicrobial-resistant bacteria isolated from dogs and cats admitted to a veterinary teaching hospital. J Am Vet Med Assoc 2014; 243:990-1000. [PMID: 24050566 DOI: 10.2460/javma.243.7.990] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To assess antimicrobial resistance among bacteria isolated from dogs and cats admitted to a veterinary teaching hospital (VTH), determine the incidence of acquisition of and frequency of persistent colonization by antimicrobial-resistant organisms among these animals, and identify risk factors associated with these variables. DESIGN Prospective longitudinal study. ANIMALS 622 dogs and 92 cats admitted to a VTH and expected to stay ≥ 48 hours. PROCEDURES Samples were collected with rectal and nasal or oropharyngeal swabs at admission and discharge. Isolates of enterococci, staphylococci, and Escherichia coli were tested for antimicrobial resistance via microbroth dilution methods. A subset of isolates was analyzed with pulsed-field gel electrophoresis and multilocus sequence typing. Significant trends in proportions of organisms with antimicrobial resistance over the 3-year study period were assessed. RESULTS The proportion of staphylococci with antimicrobial resistance increased, whereas the proportion of E coli with resistance decreased, over time; resistance among enterococci was more variable. For 506 dogs with paired admission and discharge samples, multidrug-resistant (MDR) E coli was acquired by 40 (8%) and methicillin-resistant Staphylococcus aureus (MRSA) was acquired by 7 (1.4%); hospitalization for > 3 days was significantly associated with both variables. Most (5/7 isolates) acquired MRSA was of sequence type (ST) 5. CONCLUSIONS AND CLINICAL RELEVANCE Extended hospitalization was associated with increased risk of acquiring MDR E coli or MRSA, although few animals acquired MRSA. It is unclear whether associations were confounded by illness severity or use of infection control measures. Additionally, MRSA of ST5, which has been associated with small animal medicine, was the most commonly acquired MRSA in this study.
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Affiliation(s)
- Elizabeth Hamilton
- Center for Comparative Epidemiology, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824
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Abraham S, Wong HS, Turnidge J, Johnson JR, Trott DJ. Carbapenemase-producing bacteria in companion animals: a public health concern on the horizon. J Antimicrob Chemother 2014; 69:1155-7. [PMID: 24398342 DOI: 10.1093/jac/dkt518] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Clinical infections attributed to carbapenemase-producing bacteria are a pressing public health concern owing to limited therapeutic options and linked antimicrobial resistance. In recent years, studies have reported the emergence and spread of carbapenemase-producing Enterobacteriaceae and their public health impact. This has been closely followed by the global dissemination of highly resistant and virulent zooanthroponotic extraintestinal pathogenic Escherichia coli (ExPEC) ST131 clones. It has also been hypothesized that companion animals may act as a reservoir for Gram-negative multidrug-resistant pathogens in the community. Two recent reports have documented the emergence of carbapenemase-producing bacteria in companion animals. This phenomenon is of great concern because of the close contact between humans and their pets, and the potential for cross-species transmission. This scenario suggests a role for multifaceted control of Gram-negative multidrug-resistant infections in companion animals. This short article addresses this issue and identifies steps that could facilitate this process.
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Affiliation(s)
- Sam Abraham
- School of Animal and Veterinary Sciences, University of Adelaide, South Australia 5371, Australia
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27
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Antimicrobials, Susceptibility Testing, and Minimum Inhibitory Concentrations (MIC) in Veterinary Infection Treatment. Vet Clin North Am Small Anim Pract 2013; 43:1079-89. [DOI: 10.1016/j.cvsm.2013.04.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Albarellos GA, Denamiel GA, Montoya L, Quaine PC, Lupi MP, Landoni MF. Pharmacokinetics of imipenem after intravenous, intramuscular and subcutaneous administration to cats. J Feline Med Surg 2013; 15:483-7. [PMID: 23253883 PMCID: PMC10816308 DOI: 10.1177/1098612x12471526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The study describes the pharmacokinetics and predicted efficacy of imipenem after intravenous (IV), intramuscular (IM) and subcutaneous (SC) administration to five adult cats at a dose of 5 mg/kg. Susceptibility to imipenem [minimum inhibitory concentration (MIC)] was determined for antimicrobial resistant Escherichia coli (n = 13) and staphylococci (n = 3) isolated from domestic cat infections (urinary system, skin and conjunctiva). Maximum plasma concentrations of imipenem were 13.45 µg/ml (IV), 6.47 µg/ml (IM) and 3.83 µg/ml (SC). Bioavailability was 93.18% (IM) and 107.90% (SC). Elimination half-lives for IV, IM and SC administration were 1.17, 1.44 and 1.55 h, respectively. All tested bacteria were susceptible to imipenem; MIC values were 0.03 µg/ml for Staphylococcus species and <0.25-0.5 µg/ml for E coli. Mean imipenem concentrations remained above a MIC of 0.5 µg/ml for approximately 4 h (IV and IM) and 9 h (SC). Imipenem would be predicted to be effective for the treatment of antimicrobial resistant bacterial infections in cats at a dosage of 5 mg/kg every 6-8 h (IV, IM), or longer for the SC route. However, clinical trials are mandatory to establish its efficacy and proper dosing.
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Affiliation(s)
- Gabriela A Albarellos
- Department of Pharmacology, School of Veterinary Science, University of Buenos Aires, Buenos Aires, Argentina.
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Smee N, Loyd K, Grauer GF. UTIs in small animal patients: part 2: diagnosis, treatment, and complications. J Am Anim Hosp Assoc 2013; 49:83-94. [PMID: 23325594 DOI: 10.5326/jaaha-ms-5944] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
There are multiple considerations when making a treatment plan for patients with urinary tract infections (UTIs). In part 2 of this review the authors discuss the clinical signs, diagnosis, treatment, and complications associated with bacterial UTIs in dogs and cats. Part 1 of this review summarized etiology and pathogenesis (see the Jan/Feb 2013 issue of the Journal of the American Animal Hospital Association).
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Affiliation(s)
- Nicole Smee
- Department of Clinical Sciences, Veterinary Medical Teaching Hospital, Kansas State University, Manhattan, KS, USA.
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Way LI, Sullivan LA, Johnson V, Morley PS. Comparison of routine urinalysis and urine Gram stain for detection of bacteriuria in dogs. J Vet Emerg Crit Care (San Antonio) 2013; 23:23-8. [PMID: 23317004 DOI: 10.1111/vec.12012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 11/25/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To determine the utility of performing urine Gram stain for detection of bacteriuria compared to routine urine sediment examination and bacterial aerobic urine culture. DESIGN Prospective, observational study. SETTING University teaching hospital. ANIMALS Urine samples acquired via cystocentesis through convenience sampling from 103 dogs presenting to a tertiary referral institution. INTERVENTIONS All samples underwent routine urinalysis, including sediment examination, as well as urine Gram stain and quantitative bacterial aerobic urine culture. MEASUREMENTS AND MAIN RESULTS The urine Gram stain demonstrated improved sensitivity (96% versus 76%), specificity (100% versus 77%), positive predictive value (100% versus 83%), and negative predictive value (93% versus 69%) when identifying bacteriuria, compared to routine urine sediment examination. CONCLUSIONS The urine Gram stain is highly sensitive and specific when detecting the presence of bacteria in canine urine samples. Gram staining should be considered when bacteriuria is highly suspected and requires rapid identification while bacterial culture is pending.
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Affiliation(s)
- Leilani Ireland Way
- Department of Clinical Sciences, College of Veterinary Medicine, Colorado State University, Fort Collins, CO 80523, USA
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Smee N, Loyd K, Grauer G. UTIs in small animal patients: part 1: etiology and pathogenesis. J Am Anim Hosp Assoc 2012; 49:1-7. [PMID: 23148133 DOI: 10.5326/jaaha-ms-5943] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Understanding how urinary tract infections (UTIs) can occur and how to classify them can help the practitioner to make a plan for treatment. This review summarizes the etiology, pathogenesis, and host defense mechanisms associated with bacterial UTIs in dogs and cats. UTIs in Small Animal Patients: Part 2: Diagnosis, Treatment, and Complications will appear in the March/April 2013 issue of the Journal of the American Animal Hospital Association.
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Affiliation(s)
- Nicole Smee
- Department of Clinical Sciences, Kansas State University Veterinary Medical Teaching Hospital, Manhattan, KS, USA.
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Thompson MF, Litster AL, Platell JL, Trott DJ. Canine bacterial urinary tract infections: new developments in old pathogens. Vet J 2011; 190:22-7. [PMID: 21239193 DOI: 10.1016/j.tvjl.2010.11.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 10/07/2010] [Accepted: 11/13/2010] [Indexed: 11/29/2022]
Abstract
Uncomplicated bacterial urinary tract infections (UTIs) occur commonly in dogs. Persistent or recurrent infections are reported less frequently. They typically occur in dogs with an underlying disease and are sometimes asymptomatic, especially in dogs with predisposing chronic disease. Escherichia coli is the organism most frequently cultured in both simple and complicated UTIs. Organisms such as Enterococcus spp. and Pseudomonas spp. are less common in uncomplicated UTI, but become increasingly prominent in dogs with recurrent UTI. The ability of bacteria to acquire resistance to antimicrobials and/or to evade host immune defence mechanisms is vital for persistence in the urinary tract. Antimicrobial therapy limitations and bacterial strains with such abilities require novel control strategies. Sharing of resistant bacteria between humans and dogs has been recently documented and is of particular concern for E. coli O25b:H4-ST131 strains that are both virulent and multi-drug resistant. The epidemiology of complicated UTIs, pathogenic traits of uropathogens and new therapeutic concepts are outlined in this review.
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Affiliation(s)
- Mary F Thompson
- School of Veterinary Science, The University of Queensland, St. Lucia, Queensland, Australia
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Davis JA, Jackson CR, Fedorka-Cray PJ, Barrett JB, Brousse JH, Gustafson J, Kucher M. Anatomical distribution and genetic relatedness of antimicrobial-resistant Escherichia coli from healthy companion animals. J Appl Microbiol 2011; 110:597-604. [PMID: 21208353 DOI: 10.1111/j.1365-2672.2010.04920.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Escherichia coli have been targeted for studying antimicrobial resistance in companion animals because of opportunistic infections and as a surrogate for resistance patterns in zoonotic organisms. The aim of our study is to examine antimicrobial resistance in E. coli isolated from various anatomical sites on healthy dogs and cats and identify genetic relatedness. METHODS AND RESULTS From May to August, 2007, healthy companion animals (155 dogs and 121 cats) from three veterinary clinics in the Athens, GA, USA, were sampled. Escherichia coli was isolated from swabs of nasal, oral, rectal, abdomen and hindquarter areas. Antimicrobial susceptibility testing against 16 antimicrobials was performed using broth microdilution with the Sensititre™ system. Clonal types were determined by a standardized pulsed-field gel electrophoresis protocol. Although rectal swabs yielded the most E. coli (165/317; 52%) from dogs and cats, the organism was distributed evenly among the other body sites sampled. Escherichia coli isolates from both dogs and cats exhibited resistance to all antimicrobials tested with the exception of amikacin, cephalothin and kanamycin. Resistance to ampicillin was the most prevalent resistance phenotype detected (dogs, 33/199; 17%; and cats, 27/118; 23%). Among the resistant isolates, 21 resistance patterns were observed, where 18 patterns represented multidrug resistance (MDR; resistance ≥ 2 antimicrobial classes). Also among the resistant isolates, 33 unique clonal types were detected, where each clonal type contained isolates from various sampling sites. Similar resistance phenotypes were exhibited among clonal types, and three clonal types were from both dogs and cats. CONCLUSIONS Healthy companion animals can harbour antimicrobial-resistant E. coli on body sites that routinely come in contact with human handlers. SIGNIFICANCE AND IMPACT OF THE STUDY This study is the first report that demonstrates a diverse antimicrobial-resistant E. coli population distributed over various sites of a companion animal's body, thereby suggesting potential transfer of resistant microflora to human hosts during contact.
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Affiliation(s)
- J A Davis
- Bacterial Epidemiology and Antimicrobial Resistance Research Unit, US Department of Agriculture, Agricultural Research Service, Richard B. Russell Research Center, Athens, GA 30605, USA
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Risk factors for dogs becoming rectal carriers of multidrug-resistant Escherichia coli during hospitalization. Epidemiol Infect 2010; 139:1511-21. [PMID: 21156096 DOI: 10.1017/s0950268810002785] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study aimed to identify risk factors for dogs becoming rectal carriers of multidrug-resistant (MDR) Escherichia coli while hospitalized in a veterinary teaching hospital. Exposures to potential risk factors, including treatments, hospitalization, and interventions during a 42-day pre-admission period and hospitalization variables, were assessed for 90 cases and 93 controls in a retrospective, risk-based, case-control study. On multivariable analyses, hospitalization for >6 days [odds ratio (OR) 2·91-8·00], treatment with cephalosporins prior to admission (OR 5·04, 95% CI 1·25-20·27), treatment with cephalosporins for >1 day (OR 5·18, 95% CI 1·86-14·41), and treatment with metronidazole (OR 7·17, 95% CI 1·01-50·79) while hospitalized were associated with increased risk of rectal carriage of MDR E. coli during hospitalization. The majority of rectal isolates obtained during the study period conformed to MDR E. coli clonal groups previously obtained from extraintestinal infections. These results can assist the development of improved infection control guidelines for the management of dogs in veterinary hospitals to prevent the occurrence of nosocomial clinical infections.
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Sullivan LA, Campbell VL, Onuma SC. Evaluation of open versus closed urine collection systems and development of nosocomial bacteriuria in dogs. J Am Vet Med Assoc 2010; 237:187-90. [DOI: 10.2460/javma.237.2.187] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Thompson MF, Totsika M, Schembri MA, Mills PC, Seton EJ, Trott DJ. Experimental colonization of the canine urinary tract with the asymptomatic bacteriuria Escherichia coli strain 83972. Vet Microbiol 2010; 147:205-8. [PMID: 20638202 DOI: 10.1016/j.vetmic.2010.06.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 06/08/2010] [Accepted: 06/09/2010] [Indexed: 12/01/2022]
Abstract
Establishment of asymptomatic bacteriuria (ABU) with Escherichia coli 83972 is a viable prophylactic alternative to antibiotic therapy for the prevention of recurrent bacterial urinary tract infection in humans. Approximately 2 × 10(8) viable E. coli 83972 cells were introduced into the bladder of six healthy female dogs via a sterile urinary catheter. The presence of pyuria, depression, stranguria, pollakiuria and haematuria was documented for 6 weeks and urinalysis and aerobic bacterial cultures were performed every 24-72 h. Pyuria was present in all dogs on day 1 post-inoculation and 4/6 dogs (67%) had a positive urine culture on this day. Duration of colonization ranged from 0 to 10 days (median 4 days). Four dogs were re-inoculated on day 20. Duration of colonization following the second inoculation ranged from 1 to 3 days. No dog suffered pyrexia or appeared systemically unwell but all dogs initially exhibited mild pollakiuria and a small number displayed gross haematuria and/or stranguria. By day 3 of each trial all clinical signs had resolved. Persistent bacteriuria was not achieved in any dog but two dogs were colonized for 10 days following a single inoculation. Further research is required to determine whether establishment of ABU in dogs with recurrent urinary tract infection is a viable alternative to repeated doses of antimicrobial agents.
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Affiliation(s)
- Mary F Thompson
- School of Veterinary Science, The University of Queensland, St Lucia 4072, Queensland, Australia.
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Risk factors for multidrug-resistant Escherichia coli rectal colonization of dogs on admission to a veterinary hospital. Epidemiol Infect 2010; 139:197-205. [PMID: 20392305 DOI: 10.1017/s0950268810000798] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
This study aimed to identify risk factors for intestinal colonization with multidrug-resistant (MDR) E. coli in dogs on admission to a veterinary teaching hospital. Exposures to potential risk factors, including prior treatments, hospitalizations and interventions during the 42 days prior to admission were assessed for 82 case admissions and 82 time-matched controls in a retrospective prevalence-based case-control study of 20 months duration. On multivariable analyses, risk of MDR E. coli colonization on admission was increased with prior hospitalization for 4-7 days and >7 days relative to shorter periods, and in dogs that had prior diagnostic imaging techniques. Univariable analyses indicated that risk was increased following prior treatment with several antimicrobial agents. However, on multivariable analysis, administration of fluoroquinolones was associated with increased risk but risk did not appear to increase following administration of other antimicrobials. These results can inform management of canine patients and infection control procedures to mitigate the risk of clinical disease due to MDR bacteria in hospitalized dogs.
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Gibson JS, Cobbold RN, Trott DJ. Characterization of multidrug-resistant Escherichia coli isolated from extraintestinal clinical infections in animals. J Med Microbiol 2010; 59:592-598. [PMID: 20093377 DOI: 10.1099/jmm.0.018002-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Multidrug-resistant (MDR) Escherichia coli causes extraintestinal infections in both humans and animals. This study aimed to determine whether MDR E. coli isolates cultured from extraintestinal infections in several animal species were clonal and crossed host-species boundaries, as suggested by initial characterization of a subset of canine and human isolates, or whether they represented a diverse group of host-specific strains. Isolates were obtained either from The University of Queensland Veterinary Diagnostic Laboratory or from an independent diagnostic laboratory between October 1999 and December 2007. Ninety-six MDR E. coli isolates cultured from extraintestinal clinical infections in 55 animals comprising dogs (n=45), cats (n=5), horses (n=4) and a koala (n=1) were analysed by phylogenetic grouping, antimicrobial susceptibility testing and PFGE. The isolates were cultured from the urinary tract (n=61), reproductive tract (n=11), wounds (n=11), surgical site infections (n=4) and other sites (n=9). Isolates from the same E. coli phylogenetic group with 100 % PFGE similarity and the same antimicrobial susceptibility pattern were considered to be repeat clones and excluded from further analysis. Three of the four E. coli phylogenetic groups (A, n=19; B1, n=8; and D, n=49) were represented. Analysis of PFGE similarity identified clusters of related phylogenetic group A isolates [clonal group (CG) 1] and group D isolates (CG2 and CG3), with the remainder of the isolates demonstrating diversity. The majority of CG2 isolates contained a plasmid-borne AmpC beta-lactamase, imparting resistance to cefoxitin and third-generation cephalosporins, and were obtained between 2000 and 2003. CG3 isolates were sensitive to these antimicrobial agents and appeared to replace CG2 isolates as the dominant clones from 2003 to 2007. Apart from several canine and feline isolates that demonstrated clonality, PFGE profiles tended to be divergent across species. Whilst MDR E. coli isolates from extraintestinal infections in different animal species are diverse, some dominant CGs may persist over several years.
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Affiliation(s)
- Justine S Gibson
- The University of Queensland, School of Veterinary Science, Brisbane, QLD 4072, Australia
| | - Rowland N Cobbold
- The University of Queensland, School of Veterinary Science, Brisbane, QLD 4072, Australia
| | - Darren J Trott
- The University of Queensland, School of Veterinary Science, Brisbane, QLD 4072, Australia
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