Prevention of Staphylococcus aureus endophthalmitis with topical gatifloxacin in a rabbit prophylaxis model.

Prevention of Staphylococcus aureus endophthalmitis with topical gatifloxacin in a rabbit prophylaxis model.
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在兔预防模型中用局部加替沙星预防金黄色葡萄球菌眼内炎。

DOI:
10.1089/jop.2006.22.132
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发表时间:
2006
期刊:
Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics
影响因子:
--
通讯作者:
Solomon,KerryD
Solomon,KerryD
中科院分区:
--
文献类型:
--
作者:
deCastro,LuisEFernandez;Sandoval,HelgaP;Bartholomew,LuannaR;Vroman,DavidT;Solomon,KerryD

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目的:本研究的目的是探讨预防性使用0.3%加替沙星滴剂预防兔眼内炎模型。将40只新西兰白色家兔随机分为A组(20只兔子),每15分钟在右眼滴入1滴0.3%加替沙星B组(20只兔)每15 min(0、15、30和45 min)右眼滴入1滴平衡盐溶液(BSS)。按照该治疗方案,向每只家兔的前房注射0.025 mL生理盐水,其中含有5 × 105个菌落形成单位的临床分离的金黄色葡萄球菌(万古霉素敏感)。接种物注射后,继续给药方案:A组(0.3%加替沙星1滴)或B组注射后立即、6、12、18和24 h,对动物进行盲法检查、拍照、麻醉、安乐死,并收集房水和玻璃体液以确定活菌数。加替沙星组的中位临床评分显著低于对照组(P< 0.05)。S.结论:与对照组相比,加替沙星治疗组的炎症、感染和培养阳性的眼内炎明显减少(P <0.05)。重要的是要进一步研究从这项研究的临床意义。
Purpose: The aim of this study was to investigate the prophylactic use of 0.3% gatifloxacin drops to prevent endophthalmitis in a rabbit model.Methods: Forty (40) New Zealand white rabbits were randomly placed into group A (20 rabbits) where they received 1 drop of 0.3% gatifloxacin in their right eye every 15 min (0, 15, 30, and 45 min), or group B (20 rabbits) where they received 1 drop of balanced salt solution (BSS) in their right eye every 15 min (0, 15, 30, and 45 min). Following this treatment regimen, the anterior chamber of each rabbit was injected with 0.025 mL of saline containing 5 × 105colonyforming units of a clinical isolate ofStaphylococcus aureus(vancomycin-sensitive). After the inoculum injection, the treatment regimen continued: group A (1 drop of 0.3% gatifloxacin) or group B (1 drop of BSS) immediately postinjection, 6, 12, 18, and 24 h, at which time the animals were examined in a masked fashion, photographed, anesthetized, euthanized, and the aqueous and vitreous humors collected to determine the number of viable bacteria.Results: The median clinical scores for the gatifloxacin group were significantly lower than the control group (P< 0.05). Bacterial recovery ofS. aureuswas significantly higher in the control group in both the aqueous and vitreous humor (P< 0.05).Conclusions: Gatifloxacin-treated eyes demonstrated significantly less inflammation, infection, and culture-positive endophthalmitis (P< 0.05), compared to the control animals. It is important to further investigate the clinical implications from this prophylatic study.
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