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Rabelo AA, Maranhão RPA, de Miranda ALS, Ocarino NM, Amaral CI, Paes PRO, Monteiro NCC, Fantini P. Metastatic cutaneous myxosarcoma in an adult horse. Vet Clin Pathol 2024; 53:116-121. [PMID: 38433106 DOI: 10.1111/vcp.13329] [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: 09/11/2023] [Revised: 12/08/2023] [Accepted: 12/17/2023] [Indexed: 03/05/2024]
Abstract
A 25-year-old mixed-breed equine with separate nodular cutaneous lesions in the right thoracic limb (RTL) and right ventral abdominal region was admitted to a Veterinary Hospital in Belo Horizonte, Minas Gerais. Fine-needle aspiration cytology was performed on the RTL lesion and superficial cervical lymph node, and the results were suggestive of a malignant neoplasm known as myxosarcoma. Due to the unfavorable prognosis, the animal was euthanized. Based on the macroscopic and microscopic findings, the diagnosis of metastatic cutaneous myxosarcoma was confirmed. Although rare, this tumor should be considered as a differential diagnosis for cutaneous neoplasms in this species.
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Affiliation(s)
- Andreza A Rabelo
- Department of Veterinary Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Renata P A Maranhão
- Department of Veterinary Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Ana Luísa S de Miranda
- Department of Veterinary Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Natalia M Ocarino
- Department of Veterinary Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Camila I Amaral
- Department of Veterinary Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Paulo R O Paes
- Department of Veterinary Clinical Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nathalia C C Monteiro
- Department of Veterinary Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Priscila Fantini
- Department of Veterinary Clinic and Surgery, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Torres LEC, Florez CO, Oliveira JG, Vieira GD, Ribeiro IS, Keller KM, Leme FOP, Fantini P, Maranhão RPA. Antimicrobial Activity of Plasma Rich in Platelets (PRP) on the Ocular Microbiota of Healthy Horses from Minas Gerais: In Vitro Study. Vet Med Int 2023; 2023:2407768. [PMID: 37622165 PMCID: PMC10447163 DOI: 10.1155/2023/2407768] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 02/28/2023] [Accepted: 04/20/2023] [Indexed: 08/26/2023] Open
Abstract
In equine ophthalmology, ulcerative keratitis is among the most common conditions and, in general, arises as a consequence of some trauma suffered. Secondarily, subsequent contamination by pathogenic or resident bacteria of the horse's ocular microbiota may have undesirable consequences. Under physiological conditions, the normal microbiota coexists with the immune status of the host, serving as a barrier, ensuring the health of the ocular surface, and inhibiting the proliferation of pathogens. However, in the imbalance of immune barriers, the normal microbiota can become pathogenic and lead to infection, acting as an opportunistic agent. The present study aims to demonstrate the antimicrobial effect of platelet-rich plasma (PRP), its time of action, and its correlation with the concentration of its same components in vitro on Staphylococcus sciuri, a bacterium with high prevalence in the normal ocular microbiota of horses in the municipality of Minas Gerais. For the preparation of the PRP, eight adult Quarter Horse (QH) horses were used. The individual PRP was prepared by the double centrifugation protocol, and then, the PRPs were added to a pool, followed by testing their interaction in culture with Brain Heart Infusion (BHI) broth at different dilutions against five strains collected from different animals. After 3, 6, 12, and 18 hours, the colony formation units (CFU) count on a 5% horse blood agar plate was evaluated for each time point. Our study showed that Staphylococcus sciuri, the resident microorganism of the ocular conjunctival microbiota of horses, is more susceptible when compared to the standard strain "American Type Culture Collection" (ATCC-29213) Staphylococcus aureus, a pathogenic microorganism, which was used for the validation of our study. The antibacterial effect shown in this study was bacteriostatic for up to 6 hours. The most concentrated PRP dilutions, 1 : 1 and 1 : 2, were also most effective, suggesting that the antibacterial effect is volume dependent.
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Affiliation(s)
- Luis E. C. Torres
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Camilo O. Florez
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Jéssica G. Oliveira
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Giovanna D. Vieira
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Ilza S. Ribeiro
- Grupo UnieduK, Centro Universitário de Jaguariúna-UNIFAJ, Jaguariúna, São Paulo 13918-110, Brazil
| | - Kelly M. Keller
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Fabíola O. P. Leme
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Priscila Fantini
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Renata P. A. Maranhão
- Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
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Saraiva LHG, Amaral CI, Moreira MVL, Oliveira JG, Palhares MS, Teixeira RBC, Maranhão RPA, Ecco R. Pathology in Practice. J Am Vet Med Assoc 2022; 259:1-3. [PMID: 35171818 DOI: 10.2460/javma.20.02.0062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In collaboration with the American College of Veterinary Pathologists.
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Giffoni JH, Teixeira RBC, Wenceslau RR, Abrantes MAF, Oliveira JG, Lima JTB, Maranhão RPA, Palhares MS. Flow rates of double-lumen over-the-wire catheters for high-volume fluid resuscitation in large animal species. J Vet Emerg Crit Care (San Antonio) 2022; 32:216-222. [PMID: 34994054 DOI: 10.1111/vec.13163] [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: 03/28/2020] [Revised: 10/20/2020] [Accepted: 11/08/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the maximum in vitro flow rate of 6 types of polyurethane over-the-wire double lumen catheters using both ports, for high volume fluid resuscitation in large animal species. SETTINGS University teaching hospital. DESIGN Prospective in vitro experimental study. INTERVENTIONS The flow rate of both ports of 6 polyurethane double lumen over-the-wire catheters (11 and 13-Fr, 15 and 20 cm long, elliptical and tapered tip designs) and 2 types of infusion (with or without pressure bags) were tested on a factorial scheme (6 × 2) in triplicate, using commercial isotonic crystalloid (0.9% NaCl) and synthetic colloid (6% Hydroxyethyl starch, 130/0.4). MEASUREMENTS AND MAIN RESULTS Flow rates were influenced by catheter diameter, length, tip design and presence or absence of pressure bags (P < 0.05). Mean flow rates during non-pressurized 0.9% NaCl infusion ranged from 584 mL/min (35 L/h; 11-Fr x 15 cm x tapered tip catheter) to 905 mL/min (54 L/h; 13-Fr x 15 cm x elliptical tip catheter). Mean flow rates during non-pressurized synthetic colloid infusion varied from 404 mL/min (24 L/h; 11-Fr x 15 cm x tapered tip catheter) to 724 mL/min (43 L/h; 13-Fr x 15 cm x elliptical tip catheter). Mean flow rates during pressurized infusion were 1.72 and 2.02 times greater than those obtained by gravity alone for 0.9% NaCl and synthetic colloid, respectively (P < 0.05). CONCLUSIONS Highest in vitro flow rates were achieved when larger diameter, shorter and elliptical tip catheters were used during 0.9% NaCl infusion. Catheter diameter, tip design but not length influenced the flow rate during synthetic colloid infusion. The use of pressure bags significantly increased the flow rate of all catheters, for both solutions.
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Affiliation(s)
- Juliana H Giffoni
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Raffaella B C Teixeira
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Raphael R Wenceslau
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Melina A F Abrantes
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jéssica G Oliveira
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jorge T B Lima
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Renata P A Maranhão
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Maristela S Palhares
- Veterinary Clinic and Surgery Department, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Silva ROS, Ribeiro MG, Palhares MS, Borges AS, Maranhão RPA, Silva MX, Lucas TM, Olivo G, Lobato FCF. Detection of A/B toxin and isolation of Clostridium difficile and Clostridium perfringens from foals. Equine Vet J 2013; 45:671-5. [PMID: 23452044 DOI: 10.1111/evj.12046] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [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: 07/21/2012] [Accepted: 12/29/2012] [Indexed: 11/30/2022]
Abstract
REASONS FOR PERFORMING THE STUDY Toxin detection and screening could contribute to knowledge of the transmission patterns, risk factors and epidemiology of Clostridium difficile and Clostridium perfringens. OBJECTIVE To isolate C. difficile and C. perfringens and to detect A/B toxins in faecal samples from diarrhoeic and nondiarrhoeic foals. STUDY DESIGN Cross-sectional observational study. METHODS A total of 153 samples from foals were collected: 139 samples from farms and 14 samples from diarrhoeic foals admitted to a veterinary hospital. The A/B toxins were detected by cytotoxicity assay. All suspected colonies of C. perfringens were subjected to polymerase chain reaction for detection of the major toxin genes (α, β, ε and ι) and for detection of β2-, NetB- and enterotoxin-encoding genes. Furthermore, C. difficile and C. perfringens isolates were evaluated for in vitro antimicrobial susceptibility. RESULTS Seven of 153 (4.6%) samples, all from diarrhoeic foals, were positive for C. difficile A/B toxin. Of these, 5 of 14 (35.7%) were from hospitalised foals, and only 2 of 63 (3.2%) diarrhoeic foal samples were from farms (P = 0.002). Clostridium perfringens was isolated from 31 (20.3%) foals, of which 21 of 76 (27.6%) were diarrhoeic and 10 of 76 (13.2%) were nondiarrhoeic, demonstrating a difference between these 2 groups (P = 0.045). Only 4 strains were positive for the β2-encoding gene (cpb2). All C. difficile and C. perfringens isolates were susceptible to metronidazole and vancomycin. CONCLUSIONS The present report highlights the need for laboratory diagnostics to differentiate C. difficile-associated infection in foals from other causes of diarrhoea to facilitate adequate antimicrobial therapy. POTENTIAL RELEVANCE More studies are needed to clarify the role of C. perfringens as a primary agent of diarrhoea in foals.
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Affiliation(s)
- R O S Silva
- Veterinary School, Universidade Federal de Minas Gerais (UFMG), Brazil
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Gamba CO, Araújo MR, Palhares MS, Garbin LC, Maranhão RPA, Cassali GD, Ecco R. Invasive micropapillary carcinoma of the mammary glands in a mare. Vet Q 2011; 31:207-10. [PMID: 22151006 DOI: 10.1080/01652176.2011.642618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- C O Gamba
- Laboratorio de Patologia Comparada, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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