title: Effect of knocking down the insulin receptor on mouse rod responses.
abstract: Previous experiments have shown that the insulin receptor (IR) is expressed in mammalian rods and contributes to the protection of photoreceptors during bright-light exposure. The role of the insulin receptor in the production of the light response is however unknown. We have used suction-electrode recording to examine the responses of rods after conditionally knocking down the insulin receptor. Our results show that these IR knock-down rods have an accelerated decay of the light response and a small decrease in sensitivity by comparison to littermate WT rods. Our results indicate that the insulin receptor may have some role in controlling the rate of rod response decay, but they exclude a major role of the insulin receptor pathway in phototransduction.
authors.affiliation: Department of Integrative Biology and Physiology, University of California Los Angeles, Los Angeles, California, 90095-7239.
authors.forename: Michael L
authors.initials: ML
authors.lastname: Woodruff
authors.affiliation: Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104.
authors.forename: Ammaji
authors.initials: A
authors.lastname: Rajala
authors.affiliation: 1] Department of Integrative Biology and Physiology, University of California Los Angeles, Los Angeles, California, 90095-7239 [2] Department of Ophthalmology and Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, California, 90095-7000.
authors.forename: Gordon L
authors.initials: GL
authors.lastname: Fain
authors.affiliation: 1] Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 [2] Department of Physiology and University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104 [3] Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104.
authors.forename: Raju V S
authors.initials: RV
authors.lastname: Rajala
mesh_terms: D000818:Animals; D008027:Light; D051379:Mice; D018345:Mice, Knockout; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000378:metabolism* / Q000528:radiation effects; D011972:Receptor, Insulin / Q000037:antagonists & inhibitors / Q000235:genetics*; D017948:Retinal Rod Photoreceptor Cells / Q000378:metabolism* / Q000528:radiation effects
chemical_list: D011972:Receptor, Insulin