Effects of platelet-rich plasma on corneal re-epithelization and metalloproteinase expression in the cornea of sheep with experimentally-induced infectious keratoconjunctivitis

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dc.contributor.authorPiso, Dunia Yisela Trujillo
dc.contributor.authorBarreto, Monica Yamile Padilla
dc.contributor.authorBonilla, Maria del Pilar Sanchez
dc.contributor.authorRincon, Analorena Cifuentes
dc.contributor.authorPaez, Omar Leonardo Aristizabal
dc.contributor.authorRengifo, Carlos Augusto
dc.contributor.authorAndrade, Alexandre Lima de [UNESP]
dc.contributor.institutionCooperat Univ Colombia
dc.contributor.institutionUniv Tolima
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T12:00:35Z
dc.date.available2023-07-29T12:00:35Z
dc.date.issued2023-04-01
dc.description.abstractBackground and Aim: Infectious bovine keratoconjunctivitis is the most crucial ophthalmic disease among ruminants worldwide. Moraxella is the bacteria generally associated with this disease and leads to keratitis, conjunctivitis, corneal ulcers, or blindness. Platelet-rich plasma (PRP) effects in corneal ulcers and different ocular superficial diseases in animals and humans are beneficial and enhance rapid healing and improvement, but the effects in infectious keratoconjunctivitis in ruminants are uncertain. This study aimed to examine the effect of PRP on re-epithelization, corneal tissue, clinical signs, and matrix metalloproteinase (MMP) expression in sheep with infectious keratoconjunctivitis.Materials and Methods: Eighteen sheep were divided into three groups and subjected to a disease-induction experiment. Group 1 (G1) was administered 1.0 mL PRP subconjunctivally, Group 2 (G2) was administered 1.0 mL PRP subconjunctivally and 50 mu L gentamicin drops, and the control group (CG) was administered 50 mu L saline solution topically every 12 h. Clinical ophthalmologic examination, fluorescein staining, and photography were carried out. Ulcerated areas were measured employing J-Image software. Five and eleven days following the procedure, half of the animals from each group were euthanized, and their corneas were evaluated by histopathology and zymography.Results: Control Group and G2 epithelialized more rapidly. The CG exhibited fewer clinical signs of ocular disease. In histopathological analysis, in G2, alterations were observed only in the epithelium. The CG and G1 exhibited alterations in the epithelium, stroma, and Descemet's membrane. In zymography, a decline in MMP-2 expression in the animals treated with PRP was detected. Matrix metalloproteinase-9 was significantly expressed in the animals treated with PRP monotherapy, whereas PRP + gentamicin and CG caused a decrease.Conclusion: Platelet-rich plasma alone did not demonstrate any beneficial effect on re-epithelialization, a decline in clinical signs, tissue alterations, and expression of metalloproteinases. Platelet-rich plasma combined with gentamicin was capable of suppressing MMPs, primarily MMP-9, but do not display positive effects in re-epithelization, reduction of clinical signs, or tissue effects. These outcomes are similar to those discovered in untreated animals, so the use of PRP in patients with infectious keratoconjunctivitis does not offer greater benefits in sheep. Additional research is required to validate the results of PRP use in natural disease presentation.en
dc.description.affiliationCooperat Univ Colombia, Dept Vet Med & Anim Sci, Impronta Res Grp, Ibague, Tolima, Colombia
dc.description.affiliationUniv Tolima, Dept Anim Hlth, Small Anim Med & Surg Res Grp, Ibague, Tolima, Colombia
dc.description.affiliationSao Paulo State Univ, Coll Vet Med, Dept Clin Surg & Anim Reprod, Aracatuba, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Vet Med, Dept Clin Surg & Anim Reprod, Aracatuba, SP, Brazil
dc.format.extent799-810
dc.identifierhttp://dx.doi.org/10.14202/vetworld.2023.799-810
dc.identifier.citationVeterinary World. Gujarat: Veterinary World, v. 16, n. 4, p. 799-810, 2023.
dc.identifier.doi10.14202/vetworld.2023.799-810
dc.identifier.issn0972-8988
dc.identifier.urihttp://hdl.handle.net/11449/245631
dc.identifier.wosWOS:000988634200018
dc.language.isoeng
dc.publisherVeterinary World
dc.relation.ispartofVeterinary World
dc.sourceWeb of Science
dc.subjectcorneal ulcers
dc.subjectexperimental model
dc.subjectmatrix metalloproteinase
dc.subjectMoraxella spp
dc.subjectpinkeye
dc.subjectplatelet-rich plasma
dc.titleEffects of platelet-rich plasma on corneal re-epithelization and metalloproteinase expression in the cornea of sheep with experimentally-induced infectious keratoconjunctivitisen
dc.typeArtigo
dcterms.rightsHolderVeterinary World

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