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Mestrinho LA, Faísca P, Peleteiro MC, Niza MMRE. PCNA and grade in 13 canine oral squamous cell carcinomas: association with prognosis. Vet Comp Oncol 2014; 15:18-24. [PMID: 25524719 DOI: 10.1111/vco.12134] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 08/11/2014] [Revised: 11/14/2014] [Accepted: 11/21/2014] [Indexed: 11/29/2022]
Abstract
This study evaluated the prognosis factors of age, tumour size, anatomic location, histological grade and proliferating cell nuclear antigen (PCNA) expression in 13 dogs with oral squamous cell carcinoma (OSCC) with bone invasion and without signs of lymph node or distant metastasis. All animals were treated with radical excision performed with at least 1 cm margin, based on computed tomography images. In the 2-year follow-up, median disease-free survival was 138 days for dogs with grade 3 tumours and was not reached for those with grade 2 tumours. Grade 3 tumours and PCNA labelling index ≥65% were related with a shorter disease-free survival time and consequently poor prognosis (p = 0.003 and p = 0.034, respectively). Mean PCNA labelling index was significantly higher in recurrent cases (p = 0.011). Histological grade and PCNA expression may be important prognosis factors in canine OSCC.
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Affiliation(s)
- L A Mestrinho
- CIISA, Faculdade de Medicina Veterinária, ULisboa, Avenida da Universidade Técnica, 1300-477, Lisboa, Portugal
| | - P Faísca
- CBIOS, Universidade Lusófona de Humanidade e Tecnologias, Campo Grande, 376, 1749-024, Lisboa, Portugal
| | - M C Peleteiro
- CIISA, Faculdade de Medicina Veterinária, ULisboa, Avenida da Universidade Técnica, 1300-477, Lisboa, Portugal
| | - M M R E Niza
- CIISA, Faculdade de Medicina Veterinária, ULisboa, Avenida da Universidade Técnica, 1300-477, Lisboa, Portugal
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Abstract
The expression of p63 and E-cadherin was studied in 22 oral squamous cell carcinomas in the dog according to immunohistochemical techniques. The association between these markers and clinicopathologic parameters was assessed. All tumor cells studied showed enhanced p63 expression. Regarding E-cadherin expression, 17 of 22 cases (77.3%) showed decreased immunoreactivity, and in 13 of 22 cases (59.1%), its expression was cytoplasmic. Neither p63 nor E-cadherin expression patterns were associated with tumor size, bone invasion, or lymph node metastasis. p63 score was related to proliferating cell nuclear antigen proliferative index (P = .020). A statistically significant correlation between the expression patterns of these 2 markers was noted (P = .026). Furthermore, they were related with tumor grade. An atypical p63 labeling and a cytoplasmic E-cadherin staining were statistically related with a higher tumor grade (P = .022 and P = .017, respectively). These findings suggest that changes in p63 and E-cadherin expression are frequent events in oral squamous cell carcinoma in dogs.
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Affiliation(s)
- L A Mestrinho
- CIISA, Faculty of Veterinary Medicine, ULisboa; Avenida da Universidade Técnica 1300-477, Lisboa, Portugal
| | - H Pissarra
- CIISA, Faculty of Veterinary Medicine, ULisboa; Avenida da Universidade Técnica 1300-477, Lisboa, Portugal
| | - P B Faísca
- Research Centre for Biosciences and Health Technologies, Campo Grande, Lisboa, Portugal Faculty of Veterinary Medicine, Lusófona University of Humanities and Technologies, Campo Grande, Lisboa, Portugal
| | - M Bragança
- Faculty of Veterinary Medicine, Lusófona University of Humanities and Technologies, Campo Grande, Lisboa, Portugal
| | - M C Peleteiro
- CIISA, Faculty of Veterinary Medicine, ULisboa; Avenida da Universidade Técnica 1300-477, Lisboa, Portugal
| | - M M R E Niza
- CIISA, Faculty of Veterinary Medicine, ULisboa; Avenida da Universidade Técnica 1300-477, Lisboa, Portugal
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Leal RO, Gil S, Sepúlveda N, McGahie D, Duarte A, Niza MMRE, Tavares L. Monitoring acute phase proteins in retrovirus infected cats undergoing feline interferon-ω therapy. J Small Anim Pract 2013; 55:39-45. [PMID: 24279640 PMCID: PMC7166540 DOI: 10.1111/jsap.12160] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Recombinant feline interferon-ω therapy is an immunomodulator currently used in the treatment of different retroviral diseases including feline immune deficiency virus and feline leukaemia virus. Although its mechanism of action remains unclear, this drug appears to potentiate the innate response. Acute phase proteins are one of the key components of innate immunity and studies describing their use as a monitoring tool for the immune system in animals undergoing interferon-ω therapy are lacking. This study aimed to determine whether interferon-ω therapy influences acute phase protein concentrations namely serum amyloid-A, α-1-glycoprotein and C-reactive protein. METHODS A single-arm study was performed using 16 cats, living in an animal shelter, naturally infected with retroviruses and subjected to the interferon-ω therapy licensed protocol. Samples were collected before (D0), during (D10 and D30) and after therapy (D65). Serum amyloid-A and C-reactive protein were measured by specific enzyme-linked immunosorbent assay kits and α-1-glycoprotein by single radial immunodiffusion. RESULTS All the acute phase proteins significantly increased in cats undergoing interferon-ω therapy (D0/D65: P<0·05) CLINICAL SIGNIFICANCE: Acute phase proteins appear to be reasonable predictors of innate-immune stimulation and may be useful in the individual monitoring of naturally retroviral infected cats undergoing interferon-ω therapy.
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Affiliation(s)
- R O Leal
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, Technical University of Lisbon (TULisbon), Av. Universidade Técnica, 1300-477, Lisbon, Portugal
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Gil S, Leal RO, McGahie D, Sepúlveda N, Duarte A, Niza MMRE, Tavares L. Oral Recombinant Feline Interferon-Omega as an alternative immune modulation therapy in FIV positive cats: clinical and laboratory evaluation. Res Vet Sci 2013; 96:79-85. [PMID: 24332273 PMCID: PMC7111837 DOI: 10.1016/j.rvsc.2013.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 10/21/2013] [Accepted: 11/17/2013] [Indexed: 11/18/2022]
Abstract
Recombinant-Feline Interferon-Omega (rFeIFN-ω) is an immune-modulator licensed for use subcutaneously in Feline Immunodeficiency virus (FIV) therapy. Despite oral protocols have been suggested, little is known about such use in FIV-infected cats. This study aimed to evaluate the clinical improvement, laboratory findings, concurrent viral excretion and acute phase proteins (APPs) in naturally FIV-infected cats under oral rFeIFN-ω therapy (0.1 MU/cat rFeIFN-ω PO, SID, 90 days). 11 FIV-positive cats were treated with oral rFeIFN-ω (PO Group). Results were compared to previous data from 7 FIV-positive cats treated with the subcutaneous licensed protocol (SC Group). Initial clinical scores were similar in both groups. Independently of the protocol, rFeIFN-ω induced a significant clinical improvement of treated cats. Concurrent viral excretion and APP's variation were not significant in the PO Group. Oral rFeIFN-ω can be an effective alternative therapy for FIV-infected cats, being also an option for treatment follow-up in cats submitted to the licensed protocol.
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Affiliation(s)
- S Gil
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon (ULisboa), Av. Universidade Técnica, 1300 477 Lisbon, Portugal.
| | - R O Leal
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon (ULisboa), Av. Universidade Técnica, 1300 477 Lisbon, Portugal
| | - D McGahie
- Virbac, 13(e) rue LID - BP 27, F 06511 Carros cedex, France
| | - N Sepúlveda
- London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E7HT, United Kingdom; Centro de Estatística e Aplicações da Universidade de Lisboa, FCUL, Bloco C6-Piso 4 Campo Grande, 1749 016 Lisboa, Portugal
| | - A Duarte
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon (ULisboa), Av. Universidade Técnica, 1300 477 Lisbon, Portugal
| | - M M R E Niza
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon (ULisboa), Av. Universidade Técnica, 1300 477 Lisbon, Portugal
| | - L Tavares
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon (ULisboa), Av. Universidade Técnica, 1300 477 Lisbon, Portugal
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Mestrinho LA, Bernardo E, Niza MMRE, Lloret A, Buracco P. Neoadjuvant chemoradiotherapy and surgery as treatment for oral maxillary squamous cell carcinoma in a dog. Aust Vet J 2012; 90:264-8. [PMID: 22731946 DOI: 10.1111/j.1751-0813.2012.00928.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A gingival maxillary squamous cell carcinoma was diagnosed in a 12-year-old male Yorkshire Terrier. After a complete diagnostic work-up, including a computed tomography scan, the tumour was staged as T3bN1aM0 and considered non-resectable at presentation. The combination of neoadjuvant megavoltage radiotherapy and neoadjuvant and adjuvant chemotherapy with carboplatin and doxorubicin decreased the size of the tumour, allowing for surgery. The dog was free from local disease for 421 days after which it was euthanased at the owners' request.
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Affiliation(s)
- L A Mestrinho
- Centro Investigação Ciências veterinárias (CICV) - Faculdade de Medicina Veterinária - Univ. Lusófona de Humanidades e Tecnologias, Av. Campo Grande 376, 1749-024 Lisboa, Portugal.
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Abstract
This study aimed to confirm the possible presence of bacteria in the liver of healthy dogs. Laparotomy was performed in 20 animals admitted for routine abdominal surgery. To be selected for the study, dogs had to be healthy adults without clinical liver disease, signs of infection or macroscopic liver abnormalities. Biopsy samples were histologically and bacteriologically examined. Bacteriological analysis was negative for the livers of eight of the dogs. The remaining animals harboured a diverse bacterial flora in their liver. Twelve bacterial species were identified. Histology showed that the livers of 19 dogs had minor or no abnormalities, and only one animal had interstitial fibrosis and trabecular disarrangement. Histological changes were not related to the presence of bacteria. Thus the results showed that the liver of healthy dogs may harbour different bacterial species. These microorganisms did not cause any detectable manifestation of disease, despite being potential pathogens.
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Affiliation(s)
- M M R E Niza
- CIISA - Faculdade de Medicina Veterinária, Pólo Universitário do Alto da Ajuda, Rua Prof. Cid dos Santos, 1300-477 Lisbon, Portugal
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Abstract
Pansteatitis is caused by the consumption of high levels of unsaturated fatty acids and/or the insufficient intake of vitamin E, leading to inflammation of adipose tissue. This disease has been related to fish-based diets. However, non-conventional diets must also be considered. The authors present case records of two cats with pansteatitis, for which diet consisted mostly of pig's brain, comparing them with eight cases of disease in cats eating mainly oily fish. Cats fed pig's brain did not show clinical signs, while cats eating oily fish presented inappetence, depression, reluctance to move and subcutaneous nodules painful on palpation. Cats eating pig's brain did not show any change in blood parameters, while cats fed oily fish presented leukocytosis and anaemia. Histological examination confirmed pansteatitis in all cats, independently of the diet. All animals except one of the cats eating oily fish recovered after medical treatment and change of the feeding regime.
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Affiliation(s)
- M M R E Niza
- CIISA-Faculdade de Medicina Veterinária, Pólo Universitário do Alto da Ajuda, 1300-477 Lisbon, Portugal.
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