Academic literature on the topic 'Cornell veterinarian'
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Journal articles on the topic "Cornell veterinarian"
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Folsom, Steven. "Wrangling Metadata from HathiTrust and PubMed to Provide Full-Text Linking toThe Cornell Veterinarian." Serials Librarian 68, no. 1-4 (May 19, 2015): 117–26. http://dx.doi.org/10.1080/0361526x.2015.1016835.
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Panagiotis D, Katsoulos, and Themistokleous Konstantinos S. "Corneal stromal abscess and anterior uveitis in a pet goat." Insights in Veterinary Science 5, no. 1 (September 21, 2021): 022–23. http://dx.doi.org/10.29328/journal.ivs.1001031.
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A 3-year-old non-lactating pet goat was referred to our clinic due to advanced ocular lesions and blindness of the left eye (Figure 1). According to the case history, two weeks ago, a grass awn penetrated and injured the eye. The awn was removed by the owner immediately. The following day, the goat had serous ocular discharge and photophobia and was referred to a private veterinarian. The veterinarian did not find any remaining piece of the awn and prescribed tetracaine eye drops to be administered twice a day for the next 4 days. The treatment was not successful and the eye’s condition deteriorated the following days.
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Dziezyc, Joan, Nicholas J. Millichamp, and Charlotte B. Keller. "Use of phacofragmentation for cataract removal in horses: 12 cases (1985-1989)." Journal of the American Veterinary Medical Association 198, no. 10 (May 15, 1991): 1774–78. http://dx.doi.org/10.2460/javma.1991.198.010.1774.
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Summary The medical records of 12 horses that had cataracts removed by use of phacofragmentation were reviewed. Cataracts were removed from 16 eyes in horses ranging in age from 2 months to 15 years. Complications after surgery included corneal ulcers in 13 eyes, diffuse corneal edema in 5 eyes, and uncontrollable uveitis in 3 eyes. Follow-up information was obtained in all horses from 1 month to 3.5 years after surgery. Visual results were judged good by owners or veterinarians in 10 of the horses.
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Ortiz, J. P. D., C. B. S. Lisbão, F. L. C. Brito, B. Martins, and J. L. Laus. "Superficial keratectomy and 360º conjunctival flap for bullous keratopathy in a dog: a case report." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 63, no. 3 (June 2011): 773–77. http://dx.doi.org/10.1590/s0102-09352011000300036.
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A case of a two-year-old male Pinscher with a history of discomfort in the right eye was reported. The left eye had been enucleated by the referring veterinarian due to the same symptom with unsuccessful clinical treatment. The Schirmer tear test value was elevated and a decreased intraocular pressure was observed by applanation tonometry. Biomicroscopy revealed profuse corneal edema and keratoconus and fluorescein staining was negative. Gonioscopy and ophthalmoscopy did not provide any relevant data due to the corneal alterations. Bullous keratopathy was diagnosed. Surgery was performed in two steps: 1) superficial keratectomy and 360º conjunctival flap, and 2) superficial keratectomy to restore corneal transparency. Thirty days after the second superficial keratectomy, the third eyelid flap was removed. Conjunctivalization of the upper nasal quadrant of the cornea was observed. The axial portion of the cornea was transparent and vision was restored.
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Buitrago M, Jhonny, Donicer Montes V, and José Cardona A. "Úlcera corneal en un caballo de silla argentino de Córdoba, Colombia." Revista Colombiana de Ciencia Animal - RECIA 10, no. 1 (March 1, 2018): 74. http://dx.doi.org/10.24188/recia.v10.n1.2018.633.
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Se reporta un caso de un caballo de silla argentino, macho castrado, de 8 años de edad aproximadamente, el cual fue atendido por el servicio clínico ambulatorio del área de Clínica Médico-Quirúrgica de Grandes Animales de la Facultad de Medicina Veterinaria y Zootecnia de la Universidad de Córdoba. La anamnesis indica que el caballo se encontraba en labores de trabajo de campo en un terreno boscoso, que presento al siguiente día de trabajo aumento en la producción de lágrimas y edema en los párpados del ojo derecho, por lo que le fue aplicado tratamiento con colirio antibiótico por 3 días. Quince días después de aplicado el tratamiento, los encargados del caballo no notaron mejoría, por lo que solicitaron ayuda Médico Veterinaria. En la evaluación Clínica del animal, se encontró en el ojo derecho epifora con secreción purulenta, quemosis, conjuntivitis y edema con marcada lesión del epitelio corneal. Se realizaron pruebas especiales como el test de Schrimer, encontrándose aumento marcado en la secreción lagrimal; posteriormente se realizó la prueba de la Fluoresceína Sódica, evidenciando la marcada ulceración de la córnea. En diagnóstico definitivo, basado en el examen oftalmológico especial y las pruebas realizadas fue de úlcera corneal.
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Graham, Kathleen L., Joanna D. White, and Francis M. Billson. "Feline corneal sequestra: outcome of corneoconjunctival transposition in 97 cats (109 eyes)." Journal of Feline Medicine and Surgery 19, no. 6 (April 22, 2016): 710–16. http://dx.doi.org/10.1177/1098612x16645144.
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Case series summary A retrospective study was undertaken to review outcomes of keratectomy and corneoconjunctival transposition in cats with superficial and deep corneal sequestra. Information including pertinent history, signalment, ophthalmological findings and postoperative outcome was collected from medical records. Follow-up was obtained by clinical examination, contact with the referring veterinarians and review of medical records or telephone contact with owners. Ninety-seven cats (109 eyes) were included from 2005–2015. The most commonly affected breeds included Persian, Burmese and Himalayan. The mean age at the time of surgery was 6.8 years (median 6.5 years; range 8.0 months–18.0 years). A corneal sequestrum in the contralateral eye was diagnosed in 28 cats (28.9%). Recurrent corneal sequestration was diagnosed in eight cats (nine eyes), with recurrence occurring a mean of 703 days after surgery (range 29–1750 days). Age, sex, breed, depth of sequestration and concurrent ocular disease in the contralateral eye were compared between cats with and without recurrence, with no risk factors for recurrence identified. Relevance and novel information Excellent surgical outcomes have previously been described in a series of 17 cats with superficial and mid-stromal corneal sequestra. This paper adds further information to the literature by describing a larger series of cats, with corneal sequestra affecting the full range of corneal thickness, and good long-term postoperative outcomes.
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Goncharova, A. V., S. V. Saroyan, and V. A. Kostylev. "The meaning of vascularization in ulcerative processes in the cornea in pets." Legal regulation in veterinary medicine, no. 1 (April 13, 2023): 60–64. http://dx.doi.org/10.52419/issn2782-6252.2023.1.60.
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Evaluation of the role of corneal neovascularization is very important due to a large number of diseases and various effects of exogenous and endogenous factors inducing angiogenesis. Despite the large number of keratopathies accompanied by angiogenesis, ulcerative processes remain the most common cause of vascular growth in stroma. The variety of symptoms accompanying corneal ulcer, as well as the difference in both volume and depth of the corneal lesion dictates the need to assess the value of vascularization in ulcerative lesions of the cornea in small domestic animals. The objects of the study were 317 animals, including 157 cats and 160 dogs. The animals were admitted to the Department of Diseases of small pets of the Department of Veterinary Surgery of Moscow State Academy of Veterinarian medicine and Biotechnology – MVA named after K.I. Skryabin. All animals underwent ophthalmological examination with magnifying glass, a slit lamp, and corneal staining with sodium fluorescein to detect the diameter and depth of the defect. Ulcerative keratitis or corneal ulcer was diagnosed. The severity of the disease and its courses were established to realize the purpose of the study. The symptoms of corneal ulcers were different, including: blepharospasm, mucous, mucopurulent or purulent discharge from the conjunctival cavity, edema and hyperemia of the conjunctiva, infiltration by leukocytes at the site of the ulcer, the diameter of the lesion was from ¼ of the area of the cornea to total, the depth from damage to the multilayer squamous epithelium to a perforated ulcer, myosis, hypopion were observed from the uveal tract or a hyphae. In most cases, vascularization accompanied ulcerative processes in the cornea. It was superficial or mixed. Assessing the role of vascularization in the development of ulcerative processes in the cornea, we attach the great importance to barrier the pathological focus, preserve the integrity of the eye, as well as predict the outcome of the ulcerative process.
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Pigatto, João Antônio Tadeu, Luciane De Albuquerque, Ângela Beatriz de Oliveira Bacchin, Géssica Maria Ribeiro Da Silva, Michelle Becker Petersen, and Gabriela Grandi Reiter. "Diamond Burr for the Treatment of an Indolent Corneal Ulcer in a Foal." Acta Scientiae Veterinariae 45 (June 27, 2017): 4. http://dx.doi.org/10.22456/1679-9216.85679.
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Background: Indolent corneal ulcers have been described as superficial ulcers with an associated rim of loose peripheral epithelium Treatment for indolent ulcers include debridement, grid keratotomy, multiple punctate keratotomy, third eyelid flaps, application of cyanoacrylate tissue adhesives, superficial keratectomy, and a debridement with a diamond burr.Case: A 2-month-old female American Quarter Horse was referred to the Ophthalmology Veterinary Section of the Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil, presenting epiphora and blepharospasm. A local veterinarian doctor had prescribed broad spectrum topical antibiotic and anti-inflammatory drops, although there was no positive response to the treatment for the past two weeks. Ophthalmic examination reveals and moderate discomfort in the left eye, epiphora, and mild corneal edema in the area of the defect. Slit lamp biomicroscopy revealed a superficial corneal ulcer with about 6 mm. Corneal epithelium did not adhere to underlying corneal stroma. The remainder of the ophthalmic examination of the left eye was unremarkable. The diagnosis of a corneal ulcer was made based on these clinical signs and fluorescein staining of the cornea where the stain dissects under the unattached epithelial lip. A handheld battery-operated motorized diamond burr, with a 3.5 mm medium grit tip, was utilized to remove the epithelium. The medical treatment included tobramycin eye drops, and flurbiprofen sodium ophthalmic solution, being applied six times daily, after the procedure, during two weeks, and atropine sulphate 1% was applied once a day, during three days. The foal was hospitalized until healing the corneal ulcer. For two weeks, the foal was assessed daily, and, after that, follow-up visits were scheduled weekly for four months. Healing was defined as the point at which the cornea no longer retained fluorescein.Discussion: Ulcers localized to the corneal epithelium, do not heal within the expected time frame, and have been characterized by epithelial border poorly adherent corneal and being commonly referred as indolent corneal ulcers. In this case, corneal ulcers are chronic and have not responded to an appropriate therapy for 14 days. The corneal ulcer was diagnosed based on history, clinical signs and fluorescein staining of the cornea. Usually, medical treatments provide disappointing results. Surgical treatment aims to remove the loosened epithelium in order to facilitate the growth of new epithelial cells, with stronger adhesion complexes. The utilization of a diamond burr, for the treatment of an indolent corneal ulcer, has been previously reported in humans, and dogs. In the present case, the debridement with a diamond burr was chosen on account of excellent results obtained in previous studies in humans and dogs, when treating indolent corneal ulcers. In the current case, the corneal ulcer healed in ten days, while in a study comparing the outcome in 23 horses treated by debridement, grid keratotomy, or superficial keratectomy, the mean times until complete healing were 15, 16 and 23 days, respectively. In the present case, debridement with diamond burr was effective in the treatment of a recurrent corneal ulcer in a foal.
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Cooper, Elise, William Cowmeadow, and Hany M. Elsheikha. "Should Veterinary Practitioners Be Concerned about Acanthamoeba Keratitis?" Parasitologia 1, no. 1 (March 15, 2021): 12–19. http://dx.doi.org/10.3390/parasitologia1010002.
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When presented with an animal exhibiting signs of keratitis (inflammation of the cornea), such as impaired vision, mucoid discharges, redness, swelling, and corneal oedema, most veterinarians would think of bacteria, viruses, or fungi as the potential causative agent(s). However, evidence has arisen in recent years of a possible connection between the protozoan Acanthamoeba and keratitis in animals. Acanthamoeba infection is underdiagnosed, but potentially common, in animals. In view of the paucity of evidence regarding Acanthamoeba keratitis (AK) in animals, this review has been written to increase awareness of veterinary professionals of the potential threat associated with AK and to stimulate more studies into the extent of occurrence and clinical impact of AK in animals.
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Petrali, J. P., T. A. Hamilton, A. V. Finger, and E. J. Dick. "Acute Ocular Effects of Mustard Gas: Anatomic Pathology and Immunohistopathology of Exposed Cornea." Microscopy and Microanalysis 3, S2 (August 1997): 65–66. http://dx.doi.org/10.1017/s1431927600007212.
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Sulfur mustard gas (HD), a synthetic vesicating agent used effectively as a major chemical warfare agent during World War 1, continues to be a modern day threat agent. Unfortunately there is no specific pretreatment or antidotal therapy for those who may become exposed. Whole body exposure results in cutaneous, respiratory and ocular effects. of these, eye impairment leads to the most immediate incapacitation. However HD-induced eye lesions remain to be fully characterized. In the present study we explore histological, ultrastructural and immunopathological effects of a vesicating dose of HD in rabbit cornea occurring during the first 24 hours following exposure.A 0.4μl drop of liquid HD was placed on the left cornea of anesthetized rabbits. The right cornea served as an unexposed control. Following exposure animals were returned to their cages and given appropriate care by an attending veterinarian. Eye injury was evaluated by clinical observations and given scores of severity from simple conjunctival redness to apparent corneal damage.
Dissertations / Theses on the topic "Cornell veterinarian"
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PINA, Fábio Luiz Silva. "Preservação de córneas de felinos domésticos (Felis catus - Linnaeus, 1758) em conservante utilizando a água de coco como meio nutritivo." Universidade Federal Rural de Pernambuco, 2007. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5619.
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Fabio Luiz Silva Pina.pdf: 1678514 bytes, checksum: add96ec2da4d0e8edf4922a29af1bb8c (MD5)Made available in DSpace on 2016-10-06T16:32:53Z (GMT). No. of bitstreams: 1 Fabio Luiz Silva Pina.pdf: 1678514 bytes, checksum: add96ec2da4d0e8edf4922a29af1bb8c (MD5) Previous issue date: 2007-02-05
Corneal endotelium cells present the important function of osmotic pump and barrier, thus keeping it transparent. The loss of these cells, either by any reason, becomes the cornea cloudy, influencing negativety in the visual capacity of the individual. For this fact, the conservation of corneas for transplant ends has evolved sufficiently to the long one of the years. Had to the characteristics desirable physicist-chemistries and the low cost of the coconut water, the aim of this work was to investigate the possibility of the use of the coconut water as nutritious medium in corneal preservation medium. A total of 9 cats, without no corneal pathology in course, had been sacrified. One cornea of each pair was evaluated immediately, being the other evaluated after preservation on the medium with coconut on days 3, 7 and 14. The corneas had been processed for optic microscopy. The corneas had become impracticable since day 3 of conservation, having presented morphologic alterations, signals of cellular death and estromal thickness increased, indicating important edema. We conclude that the coconut water did not serve as nutritious medium for corneal storage medium of domestic felines, however the corneas, due to absence of contamination of the medium, can be used in tectonic transplants and lamellar keratoplasty.
As células do endotélio corneal apresentam a importante função de bomba osmótica e barreira, mantendo assim a córnea transparente. A perda destas células, seja por qualquer motivo, tornam a córnea opaca, influenciando negativamente na capacidade visual do indivíduo. Por este fato, a conservação de córneas para fins de transplante tem evoluído bastante ao longo dos anos. Devido às características físico-químicas desejáveis e ao baixo custo da água de coco, o objetivo deste trabalho foi investigar a possibilidade do uso da água de coco como meio nutritivo em conservantes de córnea. Um total de 9 gatos, sem nenhuma patologia corneal em curso, foram eutanasiados. Uma córnea de cada par foi avaliada imediatamente, sendo a outra avaliada após a preservação no meio com água de coco nos dias 3, 7 e 14. As córneas foram processadas para microscopia óptica. As córneas tornaram-se inviáveis a partir do dia 3 de conservação, apresentando alterações morfológicas, sinais de morte celular e espessura estromal aumentada, indicando edema importante. Concluiu-se que a água de coco não serviu como meio nutritivo para conservantes de córneas de felinos domésticos, porém as córneas, devido à ausência de contaminação do meio, podem ser utilizadas em transplantes tectônicos e ceratoplastias lamelares.
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LIRA, Fernando José Xavier de. "Uso do meio Roswell Park Memorial Institute (RPMI) como conservante de córneas de camundongos swiss." Universidade Federal Rural de Pernambuco, 2012. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5626.
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Fernando Jose Xavier de Lira.pdf: 728148 bytes, checksum: 8e97658a43081f68d2680e041cb05bf2 (MD5)Made available in DSpace on 2016-10-07T12:50:23Z (GMT). No. of bitstreams: 1 Fernando Jose Xavier de Lira.pdf: 728148 bytes, checksum: 8e97658a43081f68d2680e041cb05bf2 (MD5) Previous issue date: 2012-02-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
An important function of corneal endothelial cells is to provide barrier and pump to maintain tissue transparency. Therefore the purpose of this study was to investigate the RPMI tissue culture medium for mouse cornea preservation kept under refrigeration. In order to evaluate endothelium cells integrity and shape, corneas were processed, immediately after removal from medium, for light and scanning electron microscopy. Corneas became unavailable as of day 4 of storage, exhibiting morphological alterations, with cellular death characteristics and increased stromal thickness, indicating severe edema. It was concluded that RPMI medium is not viable to preserve corneas for penetrating keratoplasty, nevertheless, we believe that it may be used as a preservation medium for corneal lamellar grafts because it is maintained sterile.
As células do endotélio corneal apresentam a importante função de bomba e barreira, mantendo assim a córnea transparente.. Portanto, o propósito deste estudo foi investigar o meio de cultura de tecidos RPMI como forma de preservação de córneas de camundongos mantidas sob refrigeração. Imediatamente após a retirada do meio de preservação, as córneas foram processadas para microscopia de luz e eletrônica de varredura para análise da integridade e forma da célula endotelial. As córneas tornaram-se inviáveis a partir do dia 4 de conservação, apresentando alterações morfológicas, sinais de morte celular e espessura estromal aumentada, indicando edema importante. Concluiu-se que o meio RPMI não é viável pra conservação de córneas com a finalidade de ceratoplastia penetrante, embora, acreditamos que por se manter estéril poderá ser usado para enxertos lamelares.
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Franzen, Angela Aguiar [UNESP]. "Morfologia e morfometria do endotélio corneal de gatos (Felis catus - Linnaeus, 1758) de diferentes idades à microscopia especular." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/89021.
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franzen_aa_me_jabo.pdf: 432317 bytes, checksum: 6e76f84b35fefc0d8afc5bb52873a43f (MD5)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
O endotélio corneal é essencial para a manutenção da transparência da córnea, é necessário um número mínimo de células endoteliais para a manutenção desta transparência. As alterações morfológicas e morfométricas do endotélio da córnea de gatos decorrentes do avanço da idade não estão ainda compreendidas e elucidadas. Objetivou-se estudar os parâmetros morfológicos e morfométricos do endotélio da córnea de gatos de diferentes idades, utilizando-se a microscopia especular. Avaliaram-se a densidade celular, a área celular média, o pleomorfismo e o polimegatismo. Empregaram-se 18 animais da espécie felina (Felis catus - LINNAEUS, 1758), machos ou fêmeas, subdivididos em três grupos com 6 animais cada, designados por: G1 (animais com idade entre 1 a 3 meses); G2 (animais com idade entre 5 a 12 meses) e G3 (animais com idades entre 24 a 40 meses). A microscopia especular de contato revelou que com o avanço da idade a densidade celular endotelial diminuiu, a área celular média e o pleomorfismo aumentaram e o polimegatismo apresentou valores constantes nos 3 grupos estudados.
The corneal endothelium is essential to maintain the corneal transparency. Morphological and morphometric changes in the feline corneal endothelium as a function of age are little known. The purpose of this study was investigating the effect of age on endothelial morphology and morphometry in cats. The corneal endothelium was studied throught contact specular microscopy. The exam presented data as cell density, average cell area, polymegathism and pleomorphism. A total of 16 cats were evaluated in this study. The subjects were divided in three groups with six cats (Felis catus - LINNAEUS, 1758): G1 (cats with 1 to 3 months old); G2 (cats with 5 to 12 months old); G3 (cats with 24 to 40 months old). The specular microscopy revealed decrease of cell density with age. The cell area increase and pleomorphism increase as function of age. The polymegathism showed constants values on the three groups.
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Bueno, Karina Eliana Herencia. "Efeitos da sericina do bicho-da-seda (Bombyx mori) sobre os fenótipos nucleares e na reparação da lesão ulcerativa em células do epitélio corneal de ratos diabéticos /." Jaboticabal, 2017. http://hdl.handle.net/11449/150248.
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Orientador: José Luiz LausCoorientador: Marcela Aldrovani
Banca: Priscila Cardoso Cristovam
Banca: Márcia Rita Fernandes Machado
Resumo: A córnea de pacientes diabéticos pode desenvolver defeitos epiteliais que comprometem a visão e causam dor. Os efeitos do diabetes sobre algumas características das células epiteliais corneais, notadamente os fenótipos nucleares, são ainda desconhecidos. A sericina é um polímero extraído do casulo do bicho-da- seda, que, aparentemente, promove reparação corneal em ratos. Com esta pesquisa estudou-se a produção lacrimal, o limiar de sensibilidade corneal (Cochet-Bonnet) e a pressão dos olhos de ratos com três semanas de diabetes induzido por aloxana (glicemia sérica ≥ 400 mg/dL). Os efeitos da instilação diária (a cada 6 horas, por quatro dias) de sericina 10% sobre a cinética de reepitelização de córneas cauterizadas (com álcali), em ratos diabéticos, foram estudados e comparados aos efeitos de placebo (solução salina balanceada) e de soro equino (uma opção terapêutica vigente). A pesquisa traz, também, informações sobre o tamanho dos núcleos (área e perímetro), o estado de compactação e a textura da cromatina, o conteúdo de DNA (ploidia) e a distribuição das regiões organizadoras de nucléolos impregnadas por íons prata (AgNORs) em células epiteliais corneais de ratos diabéticos (hiperglicêmicos) e de não diabéticos (normoglicêmicos). Os núcleos das células que reepitelizaram as córneas cauterizadas, após tratamento com sericina 10%, solução salina balanceada ou soro, foram avaliados. Os resultados mostraram que os olhos dos ratos diabéticos diferiram dos de não diabéticos ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The cornea of diabetic patients can develop epithelial defects that promote vision deficit and pain. The effects of diabetes/hyperglycemia on some characteristics of corneal epithelial cells, notably the nuclear phenotypes are still unknown. The sericin is a polymer extracted from the cocoons of the silkworm, which seems to promote reepithelization of burned cornea in rats. In this study, tear production, corneal touch threshold (Cochet-Bonnet) and intraocular pressure of alloxan-induced diabetes rats with three weeks of hyperglycemia (serum glucose ≥ 400 mg/dL) were studied. In addition, the effects of daily instillation (every 6 hours for 4 days) of 10% sericin over re-epithelization kinetics of burned corneas from diabetic were also studied and compared to the effects of placebo (balanced salt solution) and horse serum (an actual therapeutic option). The research also brings information about the size of the nuclei (area and perimeter), the state of compactation and the texture of chromatin, the DNA content (ploidy) and the distribution of silver-stained nucleolar organizing regions (AgNORs) of epithelial cells in corneas of diabetic (hyperglycemic) and non-diabetic rats (normoglycemic). Nuclear phenotypes of cells that participated of the re-epithelization of the burned corneas after treatment with10%sericin, balanced salt solution or serum were studied. Results showed that the eyes of diabetic rats did not differ from the ones from non-diabetic ones, just like the tear production and intraocular pressure, but differences regarding the corneal touch threshold (2.07 ± 0.52 cm in the corneas of diabetic vs. 4.00 ± 0.56 cm in non-diabetics; p = 0.01) were found. Regarding re-epithelization kinetics, the healing time of the burns were 30 hours for corneas treated with 10% sericin or serum and 36 hours in those receiving 0balanced sa... (Complete abstract click electronic access below)
Mestre
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Franzen, Angela Aguiar. "Morfologia e morfometria do endotélio corneal de gatos (Felis catus - Linnaeus, 1758) de diferentes idades à microscopia especular /." Jaboticabal : [s.n.], 2008. http://hdl.handle.net/11449/89021.
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Resumo: O endotélio corneal é essencial para a manutenção da transparência da córnea, é necessário um número mínimo de células endoteliais para a manutenção desta transparência. As alterações morfológicas e morfométricas do endotélio da córnea de gatos decorrentes do avanço da idade não estão ainda compreendidas e elucidadas. Objetivou-se estudar os parâmetros morfológicos e morfométricos do endotélio da córnea de gatos de diferentes idades, utilizando-se a microscopia especular. Avaliaram-se a densidade celular, a área celular média, o pleomorfismo e o polimegatismo. Empregaram-se 18 animais da espécie felina (Felis catus - LINNAEUS, 1758), machos ou fêmeas, subdivididos em três grupos com 6 animais cada, designados por: G1 (animais com idade entre 1 a 3 meses); G2 (animais com idade entre 5 a 12 meses) e G3 (animais com idades entre 24 a 40 meses). A microscopia especular de contato revelou que com o avanço da idade a densidade celular endotelial diminuiu, a área celular média e o pleomorfismo aumentaram e o polimegatismo apresentou valores constantes nos 3 grupos estudados.Abstract: The corneal endothelium is essential to maintain the corneal transparency. Morphological and morphometric changes in the feline corneal endothelium as a function of age are little known. The purpose of this study was investigating the effect of age on endothelial morphology and morphometry in cats. The corneal endothelium was studied throught contact specular microscopy. The exam presented data as cell density, average cell area, polymegathism and pleomorphism. A total of 16 cats were evaluated in this study. The subjects were divided in three groups with six cats (Felis catus - LINNAEUS, 1758): G1 (cats with 1 to 3 months old); G2 (cats with 5 to 12 months old); G3 (cats with 24 to 40 months old). The specular microscopy revealed decrease of cell density with age. The cell area increase and pleomorphism increase as function of age. The polymegathism showed constants values on the three groups.
Orientador: José Luiz Laus
Coorientador: João Antonio Tadeu Pigatto
Banca: Marcia Rita Fernandes Machado
Banca: Aline Adriana Bolzan
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Marinho, Fábio Andrade. "Celularidade endotelial na ceraoplastia penetrante em coelhos /." Jaboticabal, 2013. http://hdl.handle.net/11449/95525.
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Orientador: José Luiz LausBanca: Paola Castro Moraes
Banca: Juan Pablo Duque Ortiz
Resumo: Afecções que afligem o estroma corneal profundo, como as distrofias, o ceratocone, os abscessos e os sequestros da córnea são de relativa frequência. Visando ao seu tratamento, tais desordens podem ser manejadas empregando-se os transplantes corneais penetrantes. Buscou-se, com a pesquisa, avaliarem-se as condições da celularidade endotelial, à microscopia especular de não contato, à histologia e à microscopia eletrônica de varredura, na ceratoplastia penetrante em coelhos. Foram utilizados 18 animais, sadios, adultos, machos e fêmeas, com peso médio de 3,0 kg, da raça Nova Zelândia Branco. Seis grupos foram constituídos, contendo 3 animais cada. A microscopia especular foi empregada. As avaliações foram realizadas diariamente, até se completarem 30 dias e a cada três dias, até se completarem 60 dias das ceratoplastias. Colhidas, as córneas foram avaliadas à histologia e à microscopia eletrônica de varredura. Empregou-se análise de variância para medidas repetidas, com posterior avaliação pelo teste Tukey, considerando-se o nível mínimo de significância p ≤ 0,05. No pós-operatório, em face das alterações na superfície ocular, a realização da microscopia especular de não contato foi prejudicada. À histologia, evidenciaram-se edema acentuado e discreta organização estromal nas córneas receptora e doadora, ao início das avaliações. À microscopia eletrônica de varredura, não se evidenciou migração de células endoteliais do leito receptor para o doador
Abstract: Diseases affecting the deep corneal stroma such as dystrophies, keratocone, abscesses and corneal sequestrum occur frequently. Those alterations may be managed by penetrating corneal transplants. On the present research the endothelial cellularity of rabbits submitted to penetrating keratoplasty was evaluated by non-contact specular microscopy, histology and scanning electron microscopy. Eighteen adult, healthy, males and females rabbits, weighting around 3.0 kg, breed New Zealand White were used. Animals were randomly assigned on 6 groups composed of 3 individuals each. Specular microscopy was employed. The animals were daily evaluated for 30 days, and every third day, until 60 days following the keratectomies. Following harvesting, the corneas were submitted to histology and scanning electron microscopy. Repeated measures Anova and Tukey's test were used for statistical analysis. Results were considered significant if p ≤ 0.05. Non-contact specular microscopy was not possible if alterations of the ocular surface were present during the post-operative period. Histological evaluation exhibited severe edema and mild stromal organization of the recipient and donor cornea during the initial post-operative period. The scanning electron microscopy, there was no endothelial cells migration from the recipient to the donor corneas
Mestre
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Cossi, Lucas Bahdour [UNESP]. "Detecção das proteínas p53, p63 e puma no carcinoma de células escamosas corneal de cães: Lucas Bahdour Cossi. -." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/92182.
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000739583.pdf: 1703307 bytes, checksum: 8c02eba2666e577572e313859a482bfa (MD5)Ocular tumors play an increasing concern in veterinary ophthalmology. Corneal squamous cell carcinoma (SCC) is unfrequent in dogs, and by this way it has little studies, and the investigations of carcinogenesis mechanisms are rare. The aim of this work was to identify the p53, p63 and PUMA proteins expression in the spontaneous dog corneal SCC. For this work, were used five cases of corneal SCC and one case of actinic keratitis and their possible contributions to prognosis and therapy. The immunohistochemical analysis could evaluated the number of stained cells by field in optic microscopy using two classifications methods: intensity and immunofrequency. Also, we could evaluated histological grade of tumor related to malignancy in corneal SCC cells by using the mitotic index as a pattern. All samples showed immunolabelling to those proteins studied, although with diversity in intensity and frequency. The authors couldn´t observe relationship between the biggest mitotic index, and, by this way, most malignancy, with the expressions of all analysed proteins. These results could support the conclusions that p53, p63 and PUMA proteins immunoexpression are present in canine corneal SCC and could give help to their carcinogenesis, but they don´t give a prognostic indicator of these tumors
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Cossi, Lucas Bahdour. "Detecção das proteínas p53, p63 e puma no carcinoma de células escamosas corneal de cães / Lucas Bahdour Cossi. -." Araçatuba, 2013. http://hdl.handle.net/11449/92182.
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Orientador: Alexandre Lima de AndradeBanca: Silmara Sanae Sakamoto de Lima
Banca: Flávia Rezende Eugênio
Resumo: As neoplasias oculares representam uma crescente preocupação na oftalmologia veterinária. O carcinoma de células escamosas (CCE) corneal é raro em cães, pouco estudado e as investigações sobre os mecanismos da carcinogênese são escassos. O presente trabalho teve por objetivo avaliar a imunoexpressão das proteínas p53, p63 e PUMA e suas possíveis contribuições quanto ao prognóstico e terapêutica no CCE corneal espontâneo de cães. Foram identificados seis casos, cinco diagnosticados como CCE e um como ceratite actínica. Na imunoistoquímica avaliou-se o número de células marcadas por campo no microscópio adotando-se dois critérios de classificação, quanto à intensidade e quanto à frequência de marcação. Também foi avaliada a graduação histológica dos tumores quanto ao grau de malignidade nos casos de carcinoma de células escamosas de córnea, utilizando o índice mitótico como principal referência. Todas as amostras apresentaram imunomarcação para as proteínas estudadas, porém com intensidade e frequência variadas. Não foi observada relação entre maior índice mitótico e, portanto, maior malignidade, com uma maior expressão de qualquer uma das proteínas analisadas. Conclui-se que a imunoexpressão das proteínas p53, p63 e PUMA estão presentes nos CCE corneal de cães podendo contribuir para sua carcinogênese, mas não fornece indicadores de prognóstico nesta neoplasia
Abstract: Ocular tumors play an increasing concern in veterinary ophthalmology. Corneal squamous cell carcinoma (SCC) is unfrequent in dogs, and by this way it has little studies, and the investigations of carcinogenesis mechanisms are rare. The aim of this work was to identify the p53, p63 and PUMA proteins expression in the spontaneous dog corneal SCC. For this work, were used five cases of corneal SCC and one case of actinic keratitis and their possible contributions to prognosis and therapy. The immunohistochemical analysis could evaluated the number of stained cells by field in optic microscopy using two classifications methods: intensity and immunofrequency. Also, we could evaluated histological grade of tumor related to malignancy in corneal SCC cells by using the mitotic index as a pattern. All samples showed immunolabelling to those proteins studied, although with diversity in intensity and frequency. The authors couldn't observe relationship between the biggest mitotic index, and, by this way, most malignancy, with the expressions of all analysed proteins. These results could support the conclusions that p53, p63 and PUMA proteins immunoexpression are present in canine corneal SCC and could give help to their carcinogenesis, but they don't give a prognostic indicator of these tumors
Mestre
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Silva, Miguel Ladino. "Expressão da metaloprotease-1, da metaloprotease-9 e do fator de crescimento opióide em córneas de coelhos tratadas com nalbufina a 1%, após ceratectomia lamelar /." Jaboticabal, 2012. http://hdl.handle.net/11449/104289.
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Orientador: José Luiz LausBanca: Márcia Rita Fernandes Machado
Banca: Andrigo Barboza de Nardi
Banca: Alexandre Pinto Ribeiro
Banca: Andréia Vitor Couto do Amaral
Resumo: Estudaram-se os efeitos da nalbufina à 1% sobre a reparação e o limiar de sensibilidade ao toque córneal (LSC), em coelhos submetidos à ceratectomia lamelar. Compuseram-se dois grupos (n=6). O grupo nalbufina (GN) recebeu 30μL de nalbufina à 1%, a cada 4 horas, totalizando 4 aplicações diárias, às (7, 11, 15 e 19 horas), o controle (GC) recebeu solução fisiológica nas mesmas condições adotadas para o GN. Decorridas as ceratectomias, procedeu-se a avaliação clínica das córneas com lâmpada em fenda e estesiômetro durante 9 dias. As córneas foram colhidas para estudo histológico, imunoistoquímico (metaloprotease-1, metaloprotease-9 e Fator de Crescimento Opióide). O tempo médio de reepitelização das córneas foi de 7 ± 1,79 dias no GN e, no GC de 8,83 ± 1,17 días, sem diferença estatística entre os grupos (p=0,12). O diâmetro da área ulcerada não diferiu entre os grupos em nenhum dos períodos (p>0,05). 24 horas previas a realização da ceratectomia (valores basais) e, após a realização desta até a completa reparação corneal, o LSC não diferiu entre GC e GN (p>0,05). À histologia, não foram observadas alterações quanto a reparação tecidual. Ao décimo dia, todas as córneas mostraram estratificação do epitélio corneal e edema corneal em ambos os grupos. À imunoistoquimica, as MMP-1 e MMP-9 apresentaram um aumento quanto sua expressão nos 5 primeiros dias apos a realização da ceratectomia em ambos os grupos sem diferenças significativas (p>0,05). Os dias 7 e 9, elas sofrem uma diminuição significativa comparativamente com os dias mas continua sem apresentar diferença entre os grupos. O fator de crescimento opióide (OGF) apresentou imunomarcação constantes em todos os períodos e sempre restrito as células epiteliais mas não foram encontradas diferenças entre os grupos nem entre os... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This study aimed to evaluate the effects of 1% nalbuphine on corneal analgesia in rabbits submitted to lamellar keratectomy until completion of the corneal wound healing and to assess the expression of matrix metalloproteinases (MMPs)-1,-9, and opioid growth factor (OGF) during the treatment. Two groups were formed (n=6). The nalbuphine-treated group (NG) received 30 μl of topical 1% nalbuphine every 4 hours while the other group received 0.9% NaCl instead (CG). After keratectomies, corneal heling were evaluated with slit lamp and the corneal touch threshold (CTT) with esthesiometer during 9 days. Corneal samples were processed for histology and immunohistochemistry (MMP-1, -9 and OGF). Mean corneal reepithelization rate was of 7 ± 1.79 days in NG and of 8.83 ± 1.17 days in the CG (P=0.12). The ulcerated area did not differed between groups at any time point (P>0.05). CTT did change from baseline, until complete healing of the corneas in both groups (P>0.05). At histology, corneal healing was uneventful. At day 10, all corneas showed corneal edema and stratification of the corneal epithelium in both groups. In both groups, MMP-1 and -9 expression increased during the first 5 days following keratectomy (P>0.05). At day 7 and 9 expression of both enzymes decreased significantly in comparison to previous time points, without changing significantly between groups (P>0.05). OGF positive labeling was observed in all time points and was restricted to the corneal epithelium of both groups (P>0.05). It was concluded that topical 1% nalbuphine did not change corneal healing rate... (Complete abstract click electronic access below)
Doutor
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Renzo, Roberta [UNESP]. "Parâmetros oftálmicos em cachorro-do-mato (Cerdocyon thous, Linnaeus, 1766)." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/136744.
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000860264.pdf: 11975335 bytes, checksum: 933d99aa32827700877c6ba0ecab0dd4 (MD5)Cachorros-do-mato (Cerdocyon thous) figuram entre os animais selvagens mais assistidos em centros de reabilitação, tornando imperioso ampliarem-se conhecimentos sobre parâmetros morfofisiológicos próprios à espécie. Na presente pesquisa, avaliaram-se as condições oftálmicas de 16 cachorros do mato (n=32 olhos). No estudo clínico, avaliaram-se oito indivíduos, sob contenção química, à teste lacrimal de Schirmer I (TLS I), à tonometria digital de aplanação (PIO), à microscopia especular de não contato (espessura corneal, densidade, área e hexagonalidade celulares endoteliais corneais), à ultrassonografia em modos A e B (biometria, notadamente o diâmetro axial, a profundidade das câmaras anterior e vítrea, e a espessura da lente) e à eletrorretinografia (amplitudes e tempos implícitos de ondas a e b, nas fases escotóptica e fotóptica). Córneas, colhidas post mortem, de outros oito animais, foram avaliadas à histologia, quanto às espessuras da córnea e do epitélio, e aos parâmetros de birrefringência (que informam sobre agregação e orientação) de fibras lamelares colágenas estromais, empregando-se morfometria, luz polarizada e software de análise de imagens. Parâmetros de birrefringência foram quantificados como níveis de cinza médio (GA). Em relação ao TLS I e a PIO, verificaram-se valores médios de 13,37±0,94 mm e 10,43±0,96 mmHg, respectivamente. A espessura corneal média foi de 0,53±0,01mm. Relativamente às células endoteliais corneais, os valores médios de densidade e de área foram, respectivamente, de 2.850,38±137,28 cell/mm2 e de 389,00±0,17 μm2. O valor médio de hexagonalidade foi 60,06±4,66 %. Em relação à biometria, verificaram-se valores de 15,93±0,28 mm para diâmetro axial, de 3,29±0,14 mm para profundidade de câmara anterior, de 6,02±0,11 mm para espessura da lente e de 6,61±0,21 mm para profundidade da câmara vítrea. À eletrorretinografia, na fase...
Crab-eating foxes (Cerdocyon thous) are one of the wild animals most attended in rehabilitation centers, making it imperative to extend current knowledge of morphophysiological parameters specific to the species. This study assessed the ophthalmic conditions of 16 crab-eating foxes (n=32 eyes). Eight individuals were clinically assessed, under chemical restraint, by the Schirmer tear test I (STT I), digital applanation tonometry (IOP), non-contact specular microscopy (corneal thickness, density, area and corneal endothelial cell hexagonality), ultrasound in A and B modes (biometrics, particularly axial diameter, anterior and vitreous chamber depths and lens thickness) and electroretinography (amplitudes and implicit times of a- and b-waves, in scotopic and photopic phases). Corneas, collected post mortem from another eight individuals, were evaluated histologically to determine cornea and epithelium thickness and the birefringence parameters (data regarding aggregation and orientation) of lamellar collagenous stromal fibers, using morphometry, polarized light and image analysis software. Birefringence parameters were quantified as gray average (GA) values. Regarding the STT I and IOP, mean values of 13.37±0.94 mm and 10.43±0.96 mmHg were respectively verified. The mean corneal thickness was 0.53±0.01 mm. The mean density and area values of corneal endothelial cells were respectively 2850.38±137.28 cell/mm2 and 389.00±0.17 μm2. The mean value for hexagonality was 60.06±4.66 %. Concerning biometrics, the following mean values were verified: axial diameter, 15.93±0.28 mm; anterior chamber depth, 3.29±0.14 mm; vitreous chamber depth, 6.61±0.21 mm; and lens thickness, 6.02±0.11 mm. Electroretinography in the low amplitude scotopic phase showed values for mean amplitude and b-wave implicit time (20 min adaptation) of 87.33±5.36 μV and 73.10±1.12 ms, respectively. In the high amplitude scotopic phase, the mean amplitude value ...