[Change in the activity of calcium ions during illumination of a suspension of visual cell outer segment fragments].
Changes in the activity of calcium ions in the medium containing outer fragments suspension of bovine eye retina rods have been studied by the method of calcium-selective electrodes. Illumination of the suspension increases calcium ion activity in the incubation medium. Photoinduced yield of calcium ions depends on Ca+2 concentration: it equals 0.11+/-0.015 M Ca2+/1m rodopsin in the medium containing 0.1 mM CaCl2 and 0.046+/-0.002Ca2+/1M rodopsin in the medium containing 0.05 mM CaCl2. In the medium containing more than 10(-4) M CaCl2 both an increase and a decrease of Ca2+ ions have been observed.
D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002417:Cattle; D066298:In Vitro Techniques; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000378:metabolism*
D002118:Calcium
Izmenenie aktivnosti ionov kal'tsiia pri osveshchenii suspenzii fragmentov naruzhnykh segmentov zritel'nykh kletok