Document Detail

Effects of latanoprost on rodent intraocular pressure.
MedLine Citation:
PMID:  17027754     Owner:  NLM     Status:  MEDLINE    
The aim of the present study was to evaluate the effects of the prostaglandin F2 alpha analog, latanoprost, on the intraocular pressure (IOP) in rodent eyes. Rodents have been increasingly used in glaucoma research; however, conflicting results regarding the actions of prostaglandins on rodent IOP have been published. In Wistar rats, a single dose of latanoprost (60 ng) produced a biphasic change in IOP: an initial rise in pressure (2.1+/-0.7 mmHg) peaking at 2 h, followed by a prolonged hypotension with a peak reduction in IOP (5.2+/-0.7 mmHg) at 5 h. Both the hyper and hypotensive actions of latanoprost were dose-related with ED50 values of 108 and 5.2 ng, respectively. These responses were antagonized by pretreatment with 4% pilocarpine. In Brown Norway rats and C57BL/6 mice, a single dose of latanoprost also produced a biphasic response in IOP with an initial rise in pressure peaking between 1 and 2 h, followed by prolonged hypotension from 4 to 8 h. These results demonstrate that in rodents the IOP response to topical latanoprost is characterized by an initial hypertension followed by a prolonged hypotension. This prolonged hypotension is similar to that measured in monkeys and humans. Taken together, these results support the idea that rodents can serve as in vivo models to study the actions of ocular hypotensive agents, such as prostaglandins.
Shahid Husain; N Andy Whitlock; Dennis S Rice; Craig E Crosson
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2006-10-06
Journal Detail:
Title:  Experimental eye research     Volume:  83     ISSN:  0014-4835     ISO Abbreviation:  Exp. Eye Res.     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-11-06     Completed Date:  2007-02-20     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  0370707     Medline TA:  Exp Eye Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1453-8     Citation Subset:  IM    
Hewitt Laboratory of the Ola B Williams Glaucoma Center, Department of Ophthalmology, Medical University of South Carolina, Charleston, SC 29425, USA.
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MeSH Terms
Antihypertensive Agents / pharmacology*
Disease Models, Animal
Dose-Response Relationship, Drug
Intraocular Pressure / drug effects*
Mice, Inbred C57BL
Prostaglandins F, Synthetic / pharmacology*
Rats, Inbred BN
Rats, Wistar
Species Specificity
Grant Support
Reg. No./Substance:
0/Antihypertensive Agents; 0/Prostaglandins F, Synthetic; 130209-82-4/latanoprost

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