The Measurement of Activity of the Ca2+_Mg2+ ATPase in Membranous Vesicles Isolated from Smooth Muscle of Ileum in Rats Treated with Ultraviolet Radiation
Keywords:Ca2 _Mg2 ATPase, Rats, Ultraviolet radiation
The Ca2+_Mg2+ ATPase are high attraction calcium pump, that contributes in maintaining plasma membrane of cytoplasm Ca2+, Mg2+ homeostasis by source to the outside of cell. The aim of the study is to evaluate the effect of the ultraviolet radiation on the activity of the Ca2+_Mg2+ ATPase in the membranous vesicles of ileum in rats. Thirty adult Sprague–Dawley rats (age, 3-4 months, weight range, 180 – 200 g) were used in this experiment, which divided in to 5 groups (n = 6 / group). The membrane vesicles isolated from smooth muscles of rats showed high activity Ca2+_Mg2+ ATPase. All isolated membranous vesicles are irradiated with Ultraviolet radiation of 250 nanometers except control group. The irradiation period for each group was (5, 10, 30 and 45) minutes, respectively. The activity of Ca2+_Mg2+ ATPase was decreased with increased time of irradiation. In conclusion, the increased time of irradiation inhibited Ca2+_Mg2+ ATPase activity isolated from ileum smooth muscles of rats. The recommendations are to expose other organs like liver and kidney to UV radiation to explain its effect or using other range of UV radiation to reflect its effect.
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