Intraocular pressure in genetically distinct mice: an update and strain survey

被引:138
作者
Savinova, Olga V. [1 ]
Sugiyama, Fumihiro [2 ]
Martin, Janice E. [1 ,3 ]
Tomarev, Stanislav I. [4 ]
Paigen, Beverly J. [1 ]
Smith, Richard S. [1 ,3 ]
John, Simon W. M. [1 ,3 ,5 ]
机构
[1] Jackson Lab, Bar Harbor, ME 04609 USA
[2] Univ Tsukuba, Lab Anim Resource Ctr, Tsukuba, Ibaraki 305, Japan
[3] Jackson Lab, Howard Hughes Med Inst, Bar Harbor, ME 04609 USA
[4] NEI, Lab Mol & Dev Biol, NIH, Bethesda, MD 20892 USA
[5] Tufts Univ, Dept Ophthalmol, Sch Med, Boston, MA 02155 USA
关键词
D O I
10.1186/1471-2156-2-12
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Background: Little is known about genetic factors affecting intraocular pressure (IOP) in mice and other mammals. The purpose of this study was to determine the IOPs of genetically distinct mouse strains, assess the effects of factors such as age, sex and time of day on IOP in specific strain backgrounds, and to assess the effects of specific candidate gene mutations on IOP. Results: Based on over 30 studied mouse strains, average IOP ranges from approximately 10 to 20 mmHg. Gender does not typically affect IOP and aging results in an IOP decrease in some strains. Most tested strains exhibit a diurnal rhythm with IOP being the highest during the dark period of the day. Homozygosity for a null allele of the carbonic anhydrase II gene (Car2 (n)) does not alter IOP while homozygosity for a mutation in the leptin receptor gene (Lepr (db)) that causes obesity and diabetes results in increased IOP. Albino C57BL/6J mice homozygous for a tyrosinase mutation (Tyr (c-2J)) have higher IOPs than their pigmented counterparts. Conclusions: Genetically distinct mouse strains housed in the same environment have a broad range of IOPs. These IOP differences are likely due to interstrain genetic differences that create a powerful resource for studying the regulation of IOP. Age, time of day, obesity and diabetes have effects on mouse IOP similar to those in humans and other species. Mutations in two of the assessed candidate genes (Lepr and Tyr) result in increased IOP. These studies demonstrate that mice are a practical and powerful experimental system to study the genetics of IOP regulation and disease processes that raise IOP to harmful levels.
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页数:15
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