Intravitreal clearance of moxifloxacin

Mohan N. Iyer, Feng He, Theodore G. Wensel, William F. Mieler, Matthew S. Benz, Eric R. Holz, M. Gilbert Grand, David Wilson, Travis A. Meredith

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Purpose: To study the clearance of a single dose of intravitreally injected moxifloxacin in rabbits. Methods: Intravitreal injections of 200 μg/0.1 mL of moxifloxacin were performed in rabbits. Four eyes per time interval after injection (1, 6, 12, 24, 36 hours) and three eyes at 48 hours were enucleated, immediately frozen, and placed at -80°C. Ocular dissection and isolation of frozen vitreous were performed. Antibiotic assays were performed with use of high-performance liquid chromatography. Results: The concentration of intravitreal moxifloxacin showed an exponential decay with a half-life of 1.72 hours. The mean vitreous concentration was 120.49 ± 49.23 μg/mL 1 hour after injection, which declined to 20.23 ± 5.85 μg/mL at 6 hours and 1.06 ± 0.81 μg/mL at 12 hours. The aqueous levels of moxifloxacin showed an exponential decay from 10 μg/mL at 1 hour after intravitreal injection to undetectable levels by 12 hours after injection. Conclusions: Moxifloxacin clearance from the vitreous is rapid and consistent with previous clearance studies of ciprofloxacin. Given that the injected dose corresponds to several times the minimum inhibitory concentration at which 90% of isolates are inhibited (MIC90) of organisms commonly involved in endophthalmitis, and that therapeutic levels are present up to 12 hours after injection, intravitreal moxifloxacin may have a role in the treatment of endophthalmitis.

Original languageEnglish (US)
Pages (from-to)76-83
Number of pages8
JournalTransactions of the American Ophthalmological Society
Volume103
StatePublished - 2005
Externally publishedYes

Fingerprint

Intravitreal Injections
Endophthalmitis
Injections
Rabbits
Microbial Sensitivity Tests
Ciprofloxacin
Half-Life
moxifloxacin
Dissection
High Pressure Liquid Chromatography
Anti-Bacterial Agents
Therapeutics

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Iyer, M. N., He, F., Wensel, T. G., Mieler, W. F., Benz, M. S., Holz, E. R., ... Meredith, T. A. (2005). Intravitreal clearance of moxifloxacin. Transactions of the American Ophthalmological Society, 103, 76-83.

Intravitreal clearance of moxifloxacin. / Iyer, Mohan N.; He, Feng; Wensel, Theodore G.; Mieler, William F.; Benz, Matthew S.; Holz, Eric R.; Grand, M. Gilbert; Wilson, David; Meredith, Travis A.

In: Transactions of the American Ophthalmological Society, Vol. 103, 2005, p. 76-83.

Research output: Contribution to journalArticle

Iyer, MN, He, F, Wensel, TG, Mieler, WF, Benz, MS, Holz, ER, Grand, MG, Wilson, D & Meredith, TA 2005, 'Intravitreal clearance of moxifloxacin', Transactions of the American Ophthalmological Society, vol. 103, pp. 76-83.
Iyer MN, He F, Wensel TG, Mieler WF, Benz MS, Holz ER et al. Intravitreal clearance of moxifloxacin. Transactions of the American Ophthalmological Society. 2005;103:76-83.
Iyer, Mohan N. ; He, Feng ; Wensel, Theodore G. ; Mieler, William F. ; Benz, Matthew S. ; Holz, Eric R. ; Grand, M. Gilbert ; Wilson, David ; Meredith, Travis A. / Intravitreal clearance of moxifloxacin. In: Transactions of the American Ophthalmological Society. 2005 ; Vol. 103. pp. 76-83.
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