Experimental comparison between corneal and conjunctival autogenous grafts in the repair of superficial keratectomies in dogs (Canis familiaris, Linnaeus, 1758). Clinicai and morfological study.

Authors

  • Mirian Siliane Batista de Souza Universidade Estadual de Londrina, Londrina, PR
  • José Luiz Laus Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Adriana Morales Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP
  • Florêncio Figueiredo Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Ribeirão Preto, SP
  • Jaime dos Santos Maia Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP
  • Victorio Valeri Instituto de Patologia e Citologia "Prof. Dr. Victório Vallen Ltda., Ribeirão Preto, SP

DOI:

https://doi.org/10.11606/issn.2318-3659.v34i4p225-231

Keywords:

cornea, surgery, transplantation, dogs, graft.

Abstract

Lamellar keratoplasty using fresh autologous grafts of cornea and conjunctiva was studied in thirty one healthy, adult, male and female dogs. Lamellar keratectomies were accomplished removing corneal lamellar bottoms composed of epithelium and half thickness corneal stroma using a 0.5 cm diameter punch (trephine). Grafts were taken from the cornea and autogenous bulbar conjunctiva. They were sutured at the host cornea using an interrupted suture with a number eight ophthalmic silk thread. The graft evolution was evaluated at 1, 2, 7, 15, 30 and 60 days postoperatively. Transplanted corneas showed edema, neovascularization, congestion, hemorrhage, polymophonuclear and mononuclear cells infiltration, and delayed fibrosis. There was a decrease in inflammatory cell infiltrate at the latter evaluation times. By the sixtieth day, the graft areas began to show points of transparency. There were no differences between the procedures studied. The scanning electron microscopy showed epithelization of graft zones within two days of graft implantation. Fifteenth days after surgery, pavement cells were present
at the host areas. By the thirtieth day, the grafted areas were  morphologically similar to the normal cornea with granulomatous
tissue around the suture lines. Cytoplasmatic projections similar to that of the normal cornea surface were present at grafted area. The clinical and morphological results with the two techniques employed to repair corneal injuries were similar.

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Published

1997-08-01

How to Cite

Souza, M. S. B. de, Laus, J. L., Morales, A., Figueiredo, F., Maia, J. dos S., & Valeri, V. (1997). Experimental comparison between corneal and conjunctival autogenous grafts in the repair of superficial keratectomies in dogs (Canis familiaris, Linnaeus, 1758). Clinicai and morfological study. Brazilian Journal of Veterinary Research and Animal Science, 34(4), 225-231. https://doi.org/10.11606/issn.2318-3659.v34i4p225-231

Issue

Section

ANIMAL PATHOLOGY

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