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| Registros recuperados: 16 | |
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| Pontes,K.C.S.; Borges,A.P.B.; Eleotério,R.B.; Frazão,A.C.N.; Machado,D.P.D.; Reis,E.C.C.; Sepúlveda,R.V.; Duarte,T.S.; Laus,J.L.. |
| The objectives of this study were to compare surgical techniques and the effects of using n-butyl 2-cyanoacrylate and bovine amniotic membrane to repair perforated lesions in corneas. Penetrating keratoplasty was performed in sixty New Zealand White rabbits under general anesthesia. Group 1 (G1) was treated with n-butyl 2-cyanoacrylate, group 2 (G2) received a fragment of amniotic membrane through the anterior chamber and application of n-butyl 2-cyanoacrylate over the lesion, group 3 (G3) was treated with the same technique as G2 with the addition of an amniotic membrane bandage covering the cornea and sutured in the limbus region, and group 4 (G4) was treated with an amniotic membrane sutured to the lesion and an amniotic membrane bandage sutured in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabbits; Cornea; Cyanoacrylate; Glycerin; Ophthalmic surgery. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300655 |
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| Michelacci,Y.M.. |
| The cornea is a curved and transparent structure that provides the initial focusing of a light image into the eye. It consists of a central stroma that constitutes 90% of the corneal depth, covered anteriorly with epithelium and posteriorly with endothelium. Its transparency is the result of the regular spacing of collagen fibers with remarkably uniform diameter and interfibrillar space. Corneal collagen is composed of heterotypic fibrils consisting of type I and type V collagen molecules. The cornea also contains unusually high amounts of type VI collagen, which form microfibrillar structures, FACIT collagens (XII and XIV), and other nonfibrillar collagens (XIII and XVIII). FACIT collagens and other molecules, such as leucine-rich repeat proteoglycans,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cornea; Proteoglycan; Glycosaminoglycan; Collagen; Dermatan sulfate; Keratan sulfate. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000800009 |
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| Barros,L.F.M.; Barros,P.S.M.; Röpke,C.D.; Silva,V.V.; Sawada,T.C.H.; Barros,S.B.M.; Belfort Jr.,R.. |
| The in vitro ability of Pothomorphe umbellata ethanolic crude extract to inhibit matrix metalloproteinase (MMP) in normal cornea and in cornea after alkali injury was demonstrated. Corneas of albino rabbits were injured with 1 N NaOH for 20 s. After 48 h the corneas were excised, homogenized and analyzed for MMP-9 (92 kDa), pro-MMP-2 (72 kDa) and MMP-2 (67 kDa) activity by gelatin zymography. The activity was also measured in untreated corneas. After electrophoresis of 20 µg protein, gels were incubated with 50, 100, or 250 µg/mL lyophilized hydroethanolic (1:1) root crude extract of P. umbellata standardized for 4-nerolidylcatechol (7.09%). The activity of the enzymes was compared with that of untreated gel. At 48 h after injury, the activity of all MMPs... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cornea; Alkali injury; Metalloproteinases; Pothomorphe umbellata. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800014 |
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| Barbosa,V.T.; Thiesen,R; Soares,E.G.; Machado,M.R.F.; Laus,J.L.. |
| The use of ethyl-cyanoacrylate and octyl-cyanoacrylate were clinically and histopathologically compared on the corneas of 36 rabbits after lamellar keratectomy (standardized diameter and depth). The animals were distributed into two groups, one for each type of adhesive. From each group, six subgroups were histopathologically evaluated on the 3rd, 7th, 14th, 21st, 30th, and 60th day post-operative. General (daily) and ophthalmic (days 0, 1, 3, 5, 7, 14, 21, 30, 44, and 60) evaluations clinically indicated that there were significant differences for the variables water intake, attitude, blepharitis, corneal edema, and fluorescein test. The adhesive permanence time for octyl-cyanoacrylate (17.22 days) was greater than that for ethyl-cyanoacrylate (7.66... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rabbit; Cornea; Cyanoacrylate. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000500009 |
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| Barros,Séfora Vieira da Silva Gouvêa de; Aldrovani,Marcela; Lacerda,Luciana Cenço Correa de; Horr,Mônica; Marinho,Fábio Andrade; Lima,Tiago Barbalho; Silveira,Camila Pinho Balthazar da; Brito,Fábio Luiz da Cunha; Bassaneze,Vinícius; Flecher,Mayra Cunha; Beltrame,Renato Travassos; Nakamuta,Juliana Sanajotti; Krieger,José Eduardo; Laus,José Luiz; Oliveira,Krishna Duro de. |
| ABSTRACT: The objective of this research was to evaluate the clinical and microscopic effects in rabbits of lamellar keratoplasty using allogeneic omentum associated with canine amniotic membrane (AM). Rabbits were divided into two groups: one received the allogeneic free omental graft covered with the AM (OM-graft group), while the other received the AM graft containing omental mesenchymal cells (OM-cell group). Clinical signs were evaluated on different postoperative days. After the clinical assessments, the rabbits were euthanized and their corneas were obtained for histopathology and immunohistochemistry (Ki-67, marker for proliferation). Both groups showed chemosis, blepharospasm, eye discharge, hyperemia, and corneal opacity/edema. Neovascularization... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amniotic membrane; Cornea; Omentum; Progenitor cells; Wound healing.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001838 |
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| Haddad,A.; Faria-e-Sousa,S.J.. |
| The purpose of this investigation was to analyze the proliferative behavior of rabbit corneal epithelium and establish if any particular region was preferentially involved in epithelial maintenance. [3H]-thymidine was injected intravitreally into both normal eyes and eyes with partially scraped corneal epithelium. Semithin sections of the anterior segment were evaluated by quantitative autoradiography. Segments with active replication (on) and those with no cell division (off) were intermingled in all regions of the tissue, suggesting that the renewal of the epithelial surface of the cornea followed an on/off alternating pattern. In the limbus, heavy labeling of the outermost layers was observed, coupled with a few or no labeled nuclei in the basal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cornea; Epithelium; Autoradiography; Germinative cells; Stem cells; Limbus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000600470 |
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| Hünning,Paula Stieven; Andrade,Maria Cristina Caldart de; Carissimi,André; Pigatto,João. |
| ABSTRACT: The aim of this study was to evaluate the morphology of endothelial cells from different areas of the cornea of dogs. Twenty healthy eyes from 10 dogs, females or males, of different ages were studied. Corneal endothelium morphology of superior, inferior, central, nasal and temporal areas was assessed by 0.2% alizarin red staining using an optic microscope. One hundred endothelial cells from each corneal area were analyzed. In all areas of the cornea studied were found endothelial cells with four sides, five sides, six sides and seven sides. There was no significant difference regarding endothelial cell morphology in all corneal regions evaluated. Thus, the morphology of the central cornea area represents the entire endothelial mosaic and may be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canine; Cornea; Endothelium; Alizarin red; Pleomorphism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000605 |
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| Barros,Luiz F.M.; Belfort-Jr,Rubens. |
| The purpose of this study was to evaluate the effects of the use of the subconjunctival injection of bevacizumab (Avastin®) on angiogenesis in the rat cornea. Corneas of 20 Wistar male rats were cauterized with silver nitrate crystal. Animals were divided in four groups: control group (GC) that received subconjunctivally 0.02 ml of 0.9% saline solution on the day of the lesion; group GO that received subconjunctivally 0.02 ml of bevacizumab just after the lesion; group G3 that received bevacizumab on day 3 and group G5 that received bevacizumab on day 5 after lesion. Animals were euthanized on day 7. The newly formed vessels were quantified after China Ink perfusion and photographs were obtained and analyzed in a computerized system (Image Pro-Plus®). In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bevacizumab; Cornea; Neovascularization; Angiogenesis. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000300004 |
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| Sampaio,R. L.; Ranzani,J. J. T.; Brandão,C. V. S.; Thomazini-Santos,I. A.; Barraviera,B.; Barraviera,S. R. C. S.; Giannini,M. J. S. M.. |
| Fibrin glue has been researched as an alternative method for tissue synthesis and is known for its capability to promote hemostasis at the application site, good approximation of wound edges and fast healing. The current study consisted in the application of fibrin glue derived from snake venom as treatment for experimental corneal ulcers. Twenty-one dogs had their corneas experimentally prepared through lamellar keratectomy (of standardized diameter and depth). Animals were divided into seven groups of three animals each. Six experimental groups were periodically evaluated and collection was carried out on the 1st, 3rd, 7th, 15th, 30th and 60th post-operative days, whereas one control group was evaluated throughout the experiment. Analyses consisted in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fibrin glue; Snake venom; Cornea; Corneal ulcer; Keratoplasty. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000400014 |
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| Registros recuperados: 16 | |
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