期刊
ADVANCES IN THERAPY
卷 23, 期 4, 页码 511-518出版社
SPRINGER
DOI: 10.1007/BF02850039
关键词
benzalkonium chloride; glaucoma; prostaglandin; corneal epithelial cells; travoprost; latanoprost
The purpose of this study was to compare the relative toxicity of a new topical ophthalmic glaucoma medication, travoprost 0.004% without benzalkonium chloride (BAK), with that of commercially available latanoprost 0.005% (preserved with 0.02% BAK) in immortalized human corneal epithelial cells (HCEs). Tissue culture plates (96 well) containing HCEs were divided into 6 groups. Two groups served as negative controls (70% methanol and gentamicin). Another 2 groups-1 in corneal epithelial culture media and the other in a hydroxypropyl (HP)-Guar gellable lubricant eyedrop-served as live controls. The travoprost 0.004% without BAK and latanoprost 0.005% groups were exposed to 100 mu L of the undiluted solutions. Cells were incubated for 25 min at 37 degrees C. A live/dead assay was used to measure the effects of travoprost without BAK and of latanoprost on HCEs compared to 70% methanol and culture medium. Between the 2 glaucoma medications tested, travoprost 0.004% preserved without BAK showed significantly less toxicity on HCEs than did latanoprost 0.005%. This difference may have ramifications in terms of tolerability for patients who use these topical glaucoma drugs on a long-term basis.
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