Diurnal variations in the activity of beta-N-acetylglucosaminidase in fractions of heart homogenates from male mice. II. Effect of UV irradiation
Droba, B.
Folia Biologica 29(2): 123-129
1981
ISSN/ISBN: 0015-5497 PMID: 7196348 Document Number: 180018
The effect of UV irradiation on the diurnal variations in .beta.-N-acetylglucosaminidase (hexosaminidase) activity in the mouse myocardium was investigated. The general dirunal profile of hexosaminidase activity was similar in all the fractions studied (i.e., in the homogenate, supernatant, and sediment obtained after centrifugation at 40,000 g), and showed a considerable increase in enzyme activity at 2000 and 1200 h (i.e., 9 and 25 h after irradiation), as compared with controls. A significant drop in enzyme latency was observed at 2000 h. The effect of UV and X-irradiation on the dirunal variations of myocardial hexosaminidase activity were compared.