Cargando…
Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles
We prepared magnesium hydroxide (MH) nanoparticles, and investigated their effect when combined with dissolved carteolol on the bioavailability and intraocular pressure (IOP)-reducing effect of carteolol. The carteolol was solved in saline containing additives (0.5% methylcellulose, 0.001% benzalkon...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796228/ https://www.ncbi.nlm.nih.gov/pubmed/29342127 http://dx.doi.org/10.3390/ijms19010282 |
_version_ | 1783297463203921920 |
---|---|
author | Nagai, Noriaki Yamaoka, Sakie Fukuoka, Yuya Ishii, Miyu Otake, Hiroko Kanai, Kazutaka Okamoto, Norio Shimomura, Yoshikazu |
author_facet | Nagai, Noriaki Yamaoka, Sakie Fukuoka, Yuya Ishii, Miyu Otake, Hiroko Kanai, Kazutaka Okamoto, Norio Shimomura, Yoshikazu |
author_sort | Nagai, Noriaki |
collection | PubMed |
description | We prepared magnesium hydroxide (MH) nanoparticles, and investigated their effect when combined with dissolved carteolol on the bioavailability and intraocular pressure (IOP)-reducing effect of carteolol. The carteolol was solved in saline containing additives (0.5% methylcellulose, 0.001% benzalkonium chloride, 0.5% mannitol; CRT-solution). MH nanoparticles were prepared by a bead mill method with additives. Then carteolol/MH microparticle and carteolol/MH nanoparticle fixed combinations (mCMFC and nCMFC) were prepared by mixing the CRT-solution and MH particles. The transcorneal penetration and IOP-reducing effect of carteolol was evaluated in rabbits. The mean particle size of mCMFC was 7.2 μm, and the particle size was reduced to 73.5–113.5 nm by the bead mill treatment. The MH particles in nCMFC remained in the nano size range for 8 days after preparation, and the amounts of lacrimal fluid and corneal damage were unchanged by repetitive instillation of nCMFC (twice a day for 4 weeks). The transcorneal penetration of carteolol was enhanced by the combination with MH nanoparticles, and the IOP-reducing effect of nCMFC was significantly higher than that of CRT-solution or mCMFC. In conclusion, we designed nCMFC, and showed that the high levels of dissolved carteolol can be delivered into the aqueous humor by the instillation of nCMFC. Combination with MH nanoparticles may achieve an enhancement of corneal penetration for water-soluble drugs. These findings provide significant information that can be used to design further studies aimed at developing anti-glaucoma eye drugs. |
format | Online Article Text |
id | pubmed-5796228 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-57962282018-02-09 Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles Nagai, Noriaki Yamaoka, Sakie Fukuoka, Yuya Ishii, Miyu Otake, Hiroko Kanai, Kazutaka Okamoto, Norio Shimomura, Yoshikazu Int J Mol Sci Article We prepared magnesium hydroxide (MH) nanoparticles, and investigated their effect when combined with dissolved carteolol on the bioavailability and intraocular pressure (IOP)-reducing effect of carteolol. The carteolol was solved in saline containing additives (0.5% methylcellulose, 0.001% benzalkonium chloride, 0.5% mannitol; CRT-solution). MH nanoparticles were prepared by a bead mill method with additives. Then carteolol/MH microparticle and carteolol/MH nanoparticle fixed combinations (mCMFC and nCMFC) were prepared by mixing the CRT-solution and MH particles. The transcorneal penetration and IOP-reducing effect of carteolol was evaluated in rabbits. The mean particle size of mCMFC was 7.2 μm, and the particle size was reduced to 73.5–113.5 nm by the bead mill treatment. The MH particles in nCMFC remained in the nano size range for 8 days after preparation, and the amounts of lacrimal fluid and corneal damage were unchanged by repetitive instillation of nCMFC (twice a day for 4 weeks). The transcorneal penetration of carteolol was enhanced by the combination with MH nanoparticles, and the IOP-reducing effect of nCMFC was significantly higher than that of CRT-solution or mCMFC. In conclusion, we designed nCMFC, and showed that the high levels of dissolved carteolol can be delivered into the aqueous humor by the instillation of nCMFC. Combination with MH nanoparticles may achieve an enhancement of corneal penetration for water-soluble drugs. These findings provide significant information that can be used to design further studies aimed at developing anti-glaucoma eye drugs. MDPI 2018-01-17 /pmc/articles/PMC5796228/ /pubmed/29342127 http://dx.doi.org/10.3390/ijms19010282 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nagai, Noriaki Yamaoka, Sakie Fukuoka, Yuya Ishii, Miyu Otake, Hiroko Kanai, Kazutaka Okamoto, Norio Shimomura, Yoshikazu Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title | Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title_full | Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title_fullStr | Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title_full_unstemmed | Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title_short | Enhancement in Corneal Permeability of Dissolved Carteolol by Its Combination with Magnesium Hydroxide Nanoparticles |
title_sort | enhancement in corneal permeability of dissolved carteolol by its combination with magnesium hydroxide nanoparticles |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5796228/ https://www.ncbi.nlm.nih.gov/pubmed/29342127 http://dx.doi.org/10.3390/ijms19010282 |
work_keys_str_mv | AT nagainoriaki enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT yamaokasakie enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT fukuokayuya enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT ishiimiyu enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT otakehiroko enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT kanaikazutaka enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT okamotonorio enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles AT shimomurayoshikazu enhancementincornealpermeabilityofdissolvedcarteololbyitscombinationwithmagnesiumhydroxidenanoparticles |