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Milech V, Antunes BN, Caye P, Hartmann HF, Linhares MT, Cadiñanos VDS, da Cunha TR, Diniz HC, Brun MV. Gasless laparoscopic renal biopsy in canine cadavers: a preclinical study. BRAZILIAN JOURNAL OF VETERINARY MEDICINE 2023; 45:e000523. [PMID: 38149033 PMCID: PMC10750501 DOI: 10.29374/2527-2179.bjvm000523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023] Open
Abstract
In this study we aimed to analyze the feasibility of the gasless renal biopsy technique in canine cadavers. The cadavers were randomly divided into two groups: laparoscopic GCG, in which gasless laparoscopy was performed and GCP, laparoscopy with pneumoperitoneum was performed. The procedures were randomly performed on the right and left kidneys. The total surgical time, procedural steps, and intraoperative complications were recorded. The degree of difficulty of the surgical approaches was evaluated by the surgeon, assistant, and external evaluators. Renal samples were evaluated for quality, number of glomeruli, and proportion of renal cortex. The total operative time was higher in the GCG group than in the GCP group (p < 0.01). Additionally, positioning of the second portal and platform positioning took longer than the other steps. The surgical groups differed from each other in the Likert scale values for almost all the parameters regarding the difficulty of the surgical approaches (p < 0.05), with higher scores in the GCG group than in the GCP group. Based on the video recordings, the GCP group had higher scores than the GCG group for degrees of difficulty of the approach (p < 0.05). Renal histological parameters were similar between the surgical groups and surgical sides. Our study findings indicate that the proposed gasless renal biopsy technique is feasible. The longer operative time and technical difficulties in the gasless approach did not affect the quality of the renal specimens.
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Affiliation(s)
- Vanessa Milech
- Veterinarian, DSc. Programa de Pós-Graduação em Medicina Veterinária (PPGMV), Laboratório de Cirurgia Experimental, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.
| | | | - Pâmela Caye
- Veterinarian, MSc. PPGMV, Laboratório de Cirurgia Experimental, UFSM, Santa Maria, RS, Brazil.
| | - Hellen Fialho Hartmann
- Veterinarian, DSc. Programa de Pós-Graduação em Medicina Veterinária (PPGMV), Laboratório de Cirurgia Experimental, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.
| | - Marcella Teixeira Linhares
- Veterinarian, DSc. Programa de Pós-Graduação em Medicina Veterinária (PPGMV), Laboratório de Cirurgia Experimental, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.
| | | | | | - Helena Castro Diniz
- Veterinarian, Departamento de Clínica de Pequenos Animais, UFSM, Santa Maria, RS, Brazil.
| | - Maurício Veloso Brun
- Veterinarian, DSc. Departamento de Clínica de Pequenos Animais, Laboratório de Cirurgia Experimental, UFSM, Santa Maria, RS, Brazil.
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Glomerulotubular pathology in dogs with subclinical ehrlichiosis. PLoS One 2021; 16:e0260702. [PMID: 34879085 PMCID: PMC8654155 DOI: 10.1371/journal.pone.0260702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 11/15/2021] [Indexed: 11/21/2022] Open
Abstract
Subclinical stage of ehrlichiosis is characterized by absence of clinical or laboratory alterations; however, it could lead to silent glomerular/tubular changes and contribute significantly to renal failure in humans and animals. The aim of this study was to evaluate glomerular and tubular alterations in dogs with subclinical ehrlichiosis. We evaluated renal biopsies of 14 bitches with subclinical ehrlichiosis and 11 control dogs. Samples were obtained from the left kidney, and the tissue obtained was divided for light microscopy, immunofluorescence, and transmission electron microscopy. Abnormalities were identified by light microscopy in 92.9% of dogs with ehrlichiosis, but not in any of the dogs of the control group. Mesangial cell proliferation and synechiae (46.1%) were the most common findings, but focal segmental glomerulosclerosis and ischemic glomeruli (38.4%), focal glomerular mesangial matrix expansion (30.7%), mild to moderate interstitial fibrosis and tubular atrophy (23%), and glomerular basement membrane spikes (23%) were also frequent in dogs with ehrlichiosis. All animals with ehrlichiosis exhibited positive immunofluorescence staining for immunoglobulins. Transmission electron microscopy from dogs with ehrlichiosis revealed slight changes such as sparse surface projections and basement membrane double contour. The subclinical phase of ehrlichiosis poses a higher risk of development of kidney damage due to the deposition of immune complexes.
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Roura X, Cortadellas O, Day MJ, Benali SL, Zatelli A. Canine leishmaniosis and kidney disease: Q&A for an overall management in clinical practice. J Small Anim Pract 2020; 62:E1-E19. [PMID: 33107613 DOI: 10.1111/jsap.13237] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 09/10/2020] [Indexed: 12/19/2022]
Affiliation(s)
- X Roura
- Hospital Clínic Veterinari, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - O Cortadellas
- Hospital Clínico Veterinario, Universidad CEU Cardenal Herrera, 46115, Valencia, Spain
| | - M J Day
- School of Veterinary and Life Sciences, Murdoch University, 6150, Murdoch, Australia
| | - S L Benali
- Laboratorio La Vallonea, 20017, Milano, Italy
| | | | - A Zatelli
- Dipartimento di Medicina Veterinaria, Università degli Studi di Bari "Aldo Moro", 70010, Bari, Italy
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Crivellenti LZ, Cianciolo R, Wittum T, Lees GE, Adin CA. Associations of patient characteristics, disease stage, and biopsy technique with the diagnostic quality of core needle renal biopsy specimens from dogs with suspected kidney disease. J Am Vet Med Assoc 2018; 252:67-74. [DOI: 10.2460/javma.252.1.67] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Silva DA, Oliveira IT, Laposy CB, Zacchi CAM, Amatuzzi JD, Melchert A. New kidney immobilization method for percutaneous renal biopsy technique in cats. Operational aspects and complications. Acta Cir Bras 2011; 27:76-81. [PMID: 22159443 DOI: 10.1590/s0102-86502012000100013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 11/22/2011] [Indexed: 11/22/2022] Open
Abstract
PURPOSE Evaluate a new immobilization kidney method for collecting blind percutaneous renal biopsies (RB) in healthy cats. METHODS Ten cats were biopsied by a modified blinded percutaneous technique using semi-automated needles. Were evaluated the operational aspects of the technique, its complications, and the quality of the obtained samples. The evaluation included physical examination, hemogram, urinalysis, abdominal ultrasound, renal function, and histopathology of the biopsy specimens. RESULTS The developed technique was fast and easy to perform; it required two operators, and the right kidney was elected for specimen collection. After the RB, a decrease in hematocrit levels was observed in addition to hematuria and perirenal transient hematoma; however, no clinical consequences were observed, and normal parameters were restored within 48 hrs. There were no major complications or deaths, alterations in the physical examination or renal function, or signs of infection. Of the samples, 95% revealed the presence of renal tissue, and in 100% of the cats the samples were of diagnostic quality. CONCLUSION The technique was easily performed, provided adequate material for diagnosis with minimal transient complications.
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Affiliation(s)
- Daniele Alves Silva
- Units of Medical Clinics in Small Animals, Clinical Pathology and Anatomical Pathology, Veterinary Hospital, University of Oeste Paulista (UNOESTE), Presidente Prudente-SP, Brazil
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Manashirova M, Pressler BM, Gelb HR, Heng HG, Lenz SD, Ochoa-Acuna HG, Freeman LJ. Pilot evaluation of a vacuum-assisted biopsy instrument for percutaneous renal biopsy in dogs. J Am Anim Hosp Assoc 2011; 47:391-8. [PMID: 22058345 DOI: 10.5326/jaaha-ms-5637] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Kidney biopsies in dogs are commonly obtained using automated spring-loaded biopsy instruments. Interpretation of biopsies from dogs with glomerular disease requires examination of at least 5-10 glomeruli, with at least two biopsies usually required for full evaluation. The purpose of this study was to compare quality and interpretability of renal biopsies obtained from healthy dogs with a large-gauge, vacuum-assisted biopsy instrument versus two biopsies obtained with a spring-loaded biopsy needle. Twenty dogs were randomized into two groups, and percutaneous, ultrasound-guided renal biopsies were evaluated using standard criteria. There were no significant differences in the number of biopsies that contained renal tissue, cortex, or medulla. Biopsies obtained with either instrument contained an adequate number of glomeruli and an equivalent number of arterioles and severity of tissue compression. Differences included easier penetration of the renal capsule and collection of sufficient tissue for interpretation with only one instrument pass when using the vacuum-assisted device (vs two passes required with the spring-loaded instrument). Before use in client-owned dogs, future studies should evaluate whether these differences are clinically relevant advantages in the diagnostic evaluation of dogs with kidney disease, and determine the prevalence and severity of complications when using this larger gauge device.
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Affiliation(s)
- Marina Manashirova
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University, West Lafayette, IN, USA
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