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Considerations about electroretinography in dogs Ciência Rural
Oriá,Arianne Pontes; Lázaro Júnior,Luiz Paulo; Honsho,Cristiane dos Santos; Dórea Neto,Francisco de Assis; Laus,José Luiz.
Electroretinography is a technique used for the objective assessment of retinal function and is useful as an auxiliary diagnostic tool for various ophthalmopathies. We report here information about the indications, components and measurements of the electroretinogram (ERG) and about the flash ERG technique illustrated by the Classic/Standard protocol used in the Ophthalmology Unit of the “Governador Laudo Natel” Veterinary Hospital, Faculdade de Ciências Agrárias e Veterinárias, State University of São Paulo (UNESP), Jaboticabal Campus.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Electroretinography; Oscillatory potentials; Dog.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000100053
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Electroretinography and immunohistochemistry of retina in rabbits treated with sildenafil citrate Arq. Bras. Med. Vet. Zootec.
Amaral,A.V.C.; Silva,G.A.; Costa,A.P.A.; Oliveira,K.S.; Jordão,P.; Ribeiro,A.P.; Renzo,R.; Laus,J.L..
Sildenafil citrate is a type-5 phosphodiesterase inhibitor (PDE-5), able to inhibit type-6 phosphodiesterase (PDE-6) as well, providing clinical benefits and paraeffects, some of them potentially related to the retina. The effects of the sildenafil on the retrobulbar and retinal circulation were studied in 27 adult male rabbits of the White New Zealand breed. The electric activity of the retina was evaluated before and at the end of the treatments, and immunohistochemistry studies were conducted. An amplitude increase of the b wave was found in the mixed response of cones and rods after 7 days of treatment with sildenafil citrate. However, in the other evaluations and periods, the values did not differ from the basal ones. Through immunohistochemistry, no...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabbit; Sildenafil citrate; Electroretinography; Immunohistochemistry.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601589
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Electroretinography in dogs using a fiber electrode prototype BJMBR
Pereira,A.L.; Montiani-Ferreira,F.; Santos,V.R.; Salomão,S.R.; Souza,C.; Berezovsky,A..
We compared two electroretinography (ERG) electrodes in dogs using ERG standards of the International Society for Clinical Electrophysiology of Vision (ISCEV). Ten healthy Yorkshire terrier dogs (mean age, 2.80 ± 1.42 years; 6 females) weighing 5.20 ± 1.56 kg were evaluated using an ERG system for veterinary use. Dark- and light-adapted ERG responses were recorded using an ERG-Jet electrode and a fiber electrode prototype. The examinations were performed during 2 visits, 3 weeks apart. Both electrodes (ERG-Jet or fiber prototype) were used on each animal and the first eye to be recorded (OD × OS) was selected randomly. Three weeks later the examination was repeated on the same animal switching the type of electrode to be used that day and the first eye to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Electroretinography; Electrode; Retina; Canine; Prototype.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300257
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The organization of flash electroretinography unit in Veterinary Medicine Ciência Rural
Honsho,Cristiane dos Santos; Oriá,Arianne Pontes; Lazaro Júnior,Luiz Paulo da Veiga Monteiro; Dorea Neto,Francisco; Laus,José Luiz.
Electroretinography is the technique that allows the evaluation of changes in electrical potential that occur when the eye is stimulated by light. Such changes reflect the response of several retinal cells including photoreceptors (cones and rods). Thus it evaluates the retinal functionality and can diagnose abnormalities in retinas seem to be normal by ophthalmoscopy. Due to the constant evolution in veterinary ophthalmology, new centers of retinal electrophysiology have been introduced around the world either for early diagnosis of retinopathies or for preoperative evaluation of animals with cataracts and glaucoma, as well as for continuing research. The Ophthalmology Unit of the "Governador Laudo Natel" Veterinary Teaching Hospital, in the Faculty of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Electroretinography; Retina; Electrophysiology; Dogs.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000400021
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