|Exposure duration||continuous for 30 min|
Exposure to microwaves results in non-thermal, intensity-dependent, prolonged modification of acetylcholinesterase activity in frog skeletal muscles traced up to 48 hours after irradiation. A significant decrease in enzyme activity on the day of exposure was revealed. 48 hours later the decrease in enzyme activity in samples exposed to both high- and low-intensity microwaves was less than that in sham-exposed samples.
Infrared spectroscopy data argue for microwave-induced conformational changes in the secondary structure of muscle proteins: increased content of beta-structures, random coils, and amorphous structures, which were more expressed at irradiation with low field intensity.