Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin

Kazuki Matsuura,1 Yoshitsugu Inoue,2 Shin-ichi Sasaki,3 Yoshio Hata,4 Nami Ohmura,4 Takahiro Gotou41Nojima Hospital, Kurayoshi, Tottori, Japan; 2Tottori University, Yonago, Tottori, Japan; 3Oki Hospital, Okinoshima, Oki, Shimane, Japan; 4Division of Integrative Bioscience, Institute of Regenerative...

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Autores principales:	Matsuura K, Inoue Y, Sasaki S, Hata Y, Ohmura N, Gotou T
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/e3dd69e544fb4ed7b99ef688dd44072e
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spelling	oai:doaj.org-article:e3dd69e544fb4ed7b99ef688dd44072e2021-12-02T05:52:07ZAssessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin1177-54671177-5483https://doaj.org/article/e3dd69e544fb4ed7b99ef688dd44072e2013-07-01T00:00:00Zhttp://www.dovepress.com/assessment-of-vitreous-drug-concentration-in-the-porcine-eye-following-a13614https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Kazuki Matsuura,1 Yoshitsugu Inoue,2 Shin-ichi Sasaki,3 Yoshio Hata,4 Nami Ohmura,4 Takahiro Gotou41Nojima Hospital, Kurayoshi, Tottori, Japan; 2Tottori University, Yonago, Tottori, Japan; 3Oki Hospital, Okinoshima, Oki, Shimane, Japan; 4Division of Integrative Bioscience, Institute of Regenerative Medicine and Biofunction, Tottori University Graduate School of Medical Sciences, Yonago, Tottori, JapanIntroduction: Posterior capsule rupture causes instant vitreous contamination, resulting in endophthalmitis. However, transfer of intracameral moxifloxacin (MFLX) to the vitreous has not been examined in detail. We investigated vitreous antibiotic concentrations following intracameral MFLX in both ruptured and intact posterior capsular eyes.Methods: Experiment 1: Intraocular lenses were inserted into 21 extracted porcine eyes by one of the following three methods: (1) Irrigation: Throughout surgery, 33-fold diluted MFLX irrigation solution (150 µg/mL) was used; (2) Bag and chamber flushing: After surgery, the anterior chamber and area behind the intraocular lenses were irrigated with 30-fold diluted MFLX (167 µg/mL) using a 5 mL syringe; (3) Simple injection: Tenfold diluted MFLX (50 µg in 0.1 mL) was injected intracamerally at the conclusion of surgery. The eyeballs were frozen and the anterior, central, and posterior portions of the vitreous were cubed. After defrosting, concentrations were measured using high-performance liquid chromatography. Experiment 2: The same procedure was conducted for 18 eyes in which the posterior capsule had been ruptured.Results: Experiment 1: Transfer of intracameral MFLX to the anterior vitreous was approximately 1% (1.56–2.20 µg/mL) regardless of the administration method. Experiment 2: MFLX reached a high concentration in the vitreous with irrigation solution administration (maximum 30.22 µg/mL). The concentrations reached by simple injection or flushing were significantly less than those obtained by irrigation.Conclusion: With an intact posterior capsule, intracameral MFLX exhibited limited effects on vitreous concentration. Despite the fact that the risk of infection clearly increases in cases of ruptured capsule, no special infection prevention protocol has been proposed. It was confirmed that irrigation solution caused vitreous contamination in ruptured eyes within only a short irrigation time. In this case, intracameral administration did not necessarily achieve preventive concentrations for endophthalmitis, but it appears that an effective drug concentration can be achieved in the vitreous by the administration of irrigation solution.Keywords: moxifloxacin, intracameral injection, irrigation, vitreous concentration, posterior capsular ruptureMatsuura KInoue YSasaki SHata YOhmura NGotou TDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 1397-1402 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Matsuura K Inoue Y Sasaki S Hata Y Ohmura N Gotou T Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
description	Kazuki Matsuura,1 Yoshitsugu Inoue,2 Shin-ichi Sasaki,3 Yoshio Hata,4 Nami Ohmura,4 Takahiro Gotou41Nojima Hospital, Kurayoshi, Tottori, Japan; 2Tottori University, Yonago, Tottori, Japan; 3Oki Hospital, Okinoshima, Oki, Shimane, Japan; 4Division of Integrative Bioscience, Institute of Regenerative Medicine and Biofunction, Tottori University Graduate School of Medical Sciences, Yonago, Tottori, JapanIntroduction: Posterior capsule rupture causes instant vitreous contamination, resulting in endophthalmitis. However, transfer of intracameral moxifloxacin (MFLX) to the vitreous has not been examined in detail. We investigated vitreous antibiotic concentrations following intracameral MFLX in both ruptured and intact posterior capsular eyes.Methods: Experiment 1: Intraocular lenses were inserted into 21 extracted porcine eyes by one of the following three methods: (1) Irrigation: Throughout surgery, 33-fold diluted MFLX irrigation solution (150 µg/mL) was used; (2) Bag and chamber flushing: After surgery, the anterior chamber and area behind the intraocular lenses were irrigated with 30-fold diluted MFLX (167 µg/mL) using a 5 mL syringe; (3) Simple injection: Tenfold diluted MFLX (50 µg in 0.1 mL) was injected intracamerally at the conclusion of surgery. The eyeballs were frozen and the anterior, central, and posterior portions of the vitreous were cubed. After defrosting, concentrations were measured using high-performance liquid chromatography. Experiment 2: The same procedure was conducted for 18 eyes in which the posterior capsule had been ruptured.Results: Experiment 1: Transfer of intracameral MFLX to the anterior vitreous was approximately 1% (1.56–2.20 µg/mL) regardless of the administration method. Experiment 2: MFLX reached a high concentration in the vitreous with irrigation solution administration (maximum 30.22 µg/mL). The concentrations reached by simple injection or flushing were significantly less than those obtained by irrigation.Conclusion: With an intact posterior capsule, intracameral MFLX exhibited limited effects on vitreous concentration. Despite the fact that the risk of infection clearly increases in cases of ruptured capsule, no special infection prevention protocol has been proposed. It was confirmed that irrigation solution caused vitreous contamination in ruptured eyes within only a short irrigation time. In this case, intracameral administration did not necessarily achieve preventive concentrations for endophthalmitis, but it appears that an effective drug concentration can be achieved in the vitreous by the administration of irrigation solution.Keywords: moxifloxacin, intracameral injection, irrigation, vitreous concentration, posterior capsular rupture
format	article
author	Matsuura K Inoue Y Sasaki S Hata Y Ohmura N Gotou T
author_facet	Matsuura K Inoue Y Sasaki S Hata Y Ohmura N Gotou T
author_sort	Matsuura K
title	Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
title_short	Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
title_full	Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
title_fullStr	Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
title_full_unstemmed	Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
title_sort	assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/e3dd69e544fb4ed7b99ef688dd44072e
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Assessment of vitreous drug concentration in the porcine eye following intracameral injection or irrigation with moxifloxacin

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