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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Boussommier-Calleja, Alexandra Stamer, W. Daniel Lei, Yuan Ethier, C. Ross Overby, Darryl R. |
| Description | Country affiliation: United kingdom Author Affiliation: Lei Y ( Department of Bioengineering, Imperial College London, London, United Kingdom.) |
| Abstract | PURPOSE: Mice are commonly used in glaucoma research, but relatively little is known about aqueous outflow dynamics in the species. To facilitate future use of the mouse as a model of aqueous humor outflow, several fundamental physiological parameters were measured in the mouse eye. METHODS: Eyes from adult mice of either sex (C57BL/6 background) were enucleated, cannulated with a 33-gauge needle, and perfused at constant pressure while inflow was continuously measured. RESULTS: At 8 mm Hg, total outflow facility (C(total)) was 0.022 ± 0.005 µL/min/mm Hg (all values mean ± SD; n = 21). The flow-pressure relationship was linear up to 35 mm Hg. The conventional outflow facility (C(conv)) was 0.0066 ± 0.0009 µL/min/mm Hg, and the unconventional outflow (F(u)) was 0.114 ± 0.019 µL/min, both measured at room temperature. At 8 mm Hg, 66% of the outflow was via the unconventional pathway. In a more than 2-hour-long perfusion at 8 mm Hg, the rate of facility change was 2.4% ± 5.4% (n = 11) of starting facility per hour. The ocular compliance (0.086 ± 0.017 µL/mm Hg; n = 5) was comparable to the compliance of the perfusion system (0.100 ± 0.004 µL/mm Hg). CONCLUSIONS: Mouse eyes are similar to human eyes, in that they have no detectable washout rate and a linear pressure-flow relationship over a broad range of intraocular pressures. Because of the absence of washout and the apparent presence of a true Schlemm's canal, the mouse is a useful model for studying the physiology of the inner wall of Schlemm's canal and the conventional outflow tissues. |
| ISSN | 01460404 |
| e-ISSN | 15525783 |
| DOI | 10.1167/iovs.10-6019 |
| Journal | Investigative Opthalmology & Visual Science |
| Issue Number | 3 |
| Volume Number | 52 |
| Language | English |
| Publisher | Association for Research in Vision and Ophthalmology |
| Publisher Date | 2011-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Anterior Eye Segment Metabolism Aqueous Humor Secretion Blood-aqueous Barrier Physiology Intraocular Pressure Animals Compliance Mice Mice, Inbred C57bl Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Ophthalmology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ophthalmology Sensory Systems Cellular and Molecular Neuroscience |
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