{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T19:12:12Z","timestamp":1770837132765,"version":"3.50.1"},"reference-count":31,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,7,9]],"date-time":"2021-07-09T00:00:00Z","timestamp":1625788800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Veterinary Ophthalmology"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To determine the concentrations of total protein (TP), tissue inhibitor of matrix metalloproteinase\u20101 (TIMP\u20101) and hyaluronic acid (HA) in amniotic membranes (AMs) harvested from placentas of bitches of different ages and cryopreserved for different time points. The outcomes of complicated corneal defects of dogs repaired with AMs stored for the same time points were also evaluated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Procedures<\/jats:title><jats:p>Ten cryopreserved canine AMs were stored for short term (2\u201350\u00a0days), middle term (92\u2013210\u00a0days), or long term (256\u2013357\u00a0days). TP was quantified by Bradford\u2019s test, whereas TIMP\u20101 and HA were quantified by ELISA. Twenty\u2010one dogs that had an AM transplantation to restore deep or perforating corneal wounds were selected.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>TIMP\u20101\u00a0levels were lower in AMs cryopreserved for middle term (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.02) and long term (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.0009), when compared to AMs stored for short term. TP (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.39) and HA (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.18) concentrations in AMs did not differ among the storage time. TIMP\u20101 concentration in AMs correlated with storage time (<jats:italic>R<\/jats:italic>\u00a0=\u00a0\u2212.65, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.0001), while TP (<jats:italic>R<\/jats:italic>\u00a0=\u00a0\u2212.33, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.07) and HA concentrations did not (<jats:italic>R<\/jats:italic>\u00a0=\u00a0\u2212.15, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.41). The age of donors did not correlate with the components evaluated in the AMs. Corneal defects repaired with AMs stored for short term healed sooner than the ones repaired with AMs stored for middle (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.01) and long term (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.02). Additionally, TIMP\u20101\u00a0levels in AMs correlated negatively with the epithelization time (<jats:italic>R<\/jats:italic>\u00a0=\u00a0\u2212.62, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.002). Graft opacity was severe in 55% of cases. However, the HA levels in AMs correlated negatively with the opacification score (<jats:italic>R<\/jats:italic>\u00a0=\u00a0\u2212.47, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.03). Vision was observed in more patients who presented deep ulcers and descemetoceles, than in the ones with perforations (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.004).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>TIMP\u20101 concentration in canine AMs significantly decreased over a year storage time, while TP and HA concentrations did not change during the same period. The age of donors did not correlate with the components evaluated in the AMs. Complicated corneal defects repaired with AMs cryopreserved for short term healed sooner and tended to be less opaque; however, satisfactory to optimal outcomes were achieved even in the eyes repaired with AMs stored for up to a year.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vop.12916","type":"journal-article","created":{"date-parts":[[2021,7,9]],"date-time":"2021-07-09T07:48:12Z","timestamp":1625816892000},"page":"62-72","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Concentrations of tissue inhibitor of matrix metalloproteinase\u20101 and hyaluronic acid in canine amniotic membranes cryopreserved for different time points and its effects in dogs with complicated corneal ulcers"],"prefix":"10.1111","volume":"25","author":[{"given":"Nathalie Moro Bassil","family":"Dower","sequence":"first","affiliation":[{"name":"Dower Oftalmovet Cuiab\u00e1 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8922-2886","authenticated-orcid":false,"given":"Alexandre Pinto","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Veterin\u00e1ria Universidade Federal de Mato Grosso Cuiab\u00e1 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lianna Ghisi","family":"Gomes","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Veterin\u00e1ria Universidade Federal de Mato Grosso Cuiab\u00e1 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andresa","family":"de C\u00e1ssia Martini","sequence":"additional","affiliation":[{"name":"Centro Universit\u00e1rio de Mineiros Goi\u00e1s Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isis Indaiara Gon\u00e7alves Granjeiro","family":"Taques","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Veterin\u00e1ria 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