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Topical 1% Nalbuphine on corneal sensivity and epitheilization after experimental lamellar keratectomy in rabbits

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Author(s)
Silva, Miguel Ladino
Piso, Dunia Yisela Trujillo
Ribeiro, Alexandre Pinto
Laus, Jose Luiz
Contributor(s)
Universidade Estadual Paulista (UNESP)
Keywords
Rabbit
Cornea
re-epithelialization
Nalbuphine
Pain
Coelho
Córnea
reepitelização
nalbufina
Dor

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URI
http://hdl.handle.net/20.500.12424/1393324
Online Access
http://hdl.handle.net/11449/29487
http://acervodigital.unesp.br/handle/11449/29487
https://dx.doi.org/10.1590/S0103-84782012000400017
Abstract
Avaliaram-se os efeitos da nalbufina 1% sobre o limiar de sensibilidade corneal (LSC) e a epitelização corneal em coelhos submetidos à ceratectomia lamelar unilateral. Os procedimentos foram aprovados pela Comissão de Ética no Uso de Animais da Faculdade de Ciências Agrarias e Veterinárias da Universidade Estadual Paulista (Protocolo no 028793-08), de acordo com as normas do Institutional Animal Committee and the Association for Research in Vision and Ophthalmology (ARVO). Conceberam-se dois grupos (n=10) e os olhos foram tratados com 30µl de Nalbufina 1% (Olho esquerdo - GN) ou com 30µl de solução salina (Olho direito - GC), às 7, 11, 15 e 19 horas das ceratectomias unilaterais, até sua reepitelização. O limiar de sensibilidade corneal (LSC) foi avaliado 20 minutos após cada tratamento, 48 horas antes e depois da ceratectomia a intervalos regulares de 12 horas (7 e 19 horas) com estesiômetro de Cochet-Bonnet. Após a realização da cirurgia, diariamente, as córneas foram coradas com fluoresceína e registradas em fotos digitais para mensuração em software Image-J. A normalidade dos dados foi avaliada ao teste de Kolmogorov-Smirnov. O limiar de sensibilidade e a área ulcerada foram comparados ao teste de Bonferroni, após ANOVA de medias repetidas (P<0,05). O teste t-Student foi aplicado na avaliação das médias quanto ao tempo de reepitelização. Não houve diferença significativa quanto ao limiar de sensibilidade entre os grupos, em qualquer dos períodos avaliados (P>0,05), todavia, constatou-se maior área sob a curva, relativamente ao LSC, no GN (2771), comparativamente ao GC (2164). O tempo médio±DP de reepitelização no GN foi de 7,40±0,47 dias e de 8,90±0,31 dias no GC, não havendo diferença significativa entre os grupos (P=0,11). Como conclusão, tem-se que o uso tópico de nalbufina 1% não alterou significativamente o limiar de sensibilidade e a reepitelização corneais em coelhos submetidos a ceratectomia lamelar experimental.
The present study was aimed to evaluate the effects of topical 1% nalbuphine on corneal sensitivity and re-epithelialization, after lamellar keratectomy in rabbits. All protocols were approved by the Animal Care Comission of São Paulo State University (Protocol 028793-08) and were conducted in accordance with the Institutional Animal Committee and the Association for Research in Vision and Ophthalmology (ARVO) statement for the use of animals in research. Surgeries were performed on the left eye (Nalbuphine Group) and on the right eye (Control Group). Two groups were formed (n=10) and corneas received either 30µl of 1% nalbuphine (NG) or 30µl of 0,9% saline (CG). Treatments occurred at 7, 11, 15 and 19 hours. After the surgery, the corneas were stained with fluorescein and photographed daily; corneal touch threshold (CTT) was assessed with Cochet-Bonnet aesthesiometer, at 7 and 19 hours, 20 minutes after treatments. Data were statistically compared with repeated measures ANOVA and Bonferroni post-hoc test, and T test (P<0.05). Average ±SD time for corneal re-epithelialization was 7.40±0.47 days (NG) and 8.90±0.31 days (CG) (P=0.11). The results showed that the diameter of the keratectomized area and CTT did not change significantly between both groups (P>0.05); however, a higher area under the curve for both parameters was observed in the NG (2771), in comparison to CG (2164). Topical 1% nalbuphine did not change significantly corneal sensitivity and re-epithelialization, after experimental lamellar keratectomy in rabbits.
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Date
2014-05-20
Type
outro
Identifier
oai:acervodigital.unesp.br:11449/29487
Ciência Rural. Universidade Federal de Santa Maria (UFSM), v. 42, n. 4, p. 679-684, 2012.
0103-8478
http://hdl.handle.net/11449/29487
http://acervodigital.unesp.br/handle/11449/29487
10.1590/S0103-84782012000400017
S0103-84782012000400017
WOS:000304352200017
S0103-84782012000400017.pdf
http://dx.doi.org/10.1590/S0103-84782012000400017
Copyright/License
info:eu-repo/semantics/openAccess
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