Quantitative changes in potassium, sodium, and calcium in the submaxillary salivary gland and blood serum of rats exposed to 2880-MHz microwave radiation
✍ Scribed by Anna Furmaniak
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 462 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0197-8462
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✦ Synopsis
Na+ , K+ , and Ca2+ concentrations in the blood serum and submaxillary salivary gland (SSG) were investigated in adult, male rats exposed to 2880-MHz microwaves modulated with 1.5-ps pulses at a pulse repetition rate of lo00 Hz or in a h y p e r t h d environment. Rats were exposed, one at a time, for 30 min to microwaves producing a specific absorption rate (SAR) oE 4.2, 6.3,6.8,8.4, 10.8, or 12.6 W k g , or were shamexposedunder similareovinmmentalconditions.
In a second series, one group of rats was exposed singly for 15, 30, or 60 min to mimwaves producing an SAR of 9.5 W k g and other rats were exposed for similar periods at 40 "C; and 10 rats were sham exposed. Flame photometric analysis indicated that the thresholds of microwave radiation required to induce a change in Na+, K+, and Ca2' concentrations in the salivary glands are 6.8, 6.8, and 6.3 W k g , respectively. The directions of Na+, K+, and Caz' ion shifts in exposed rats' salivary glands are similar, whether affected by mimwaves or hyperthermia. Greater changes in Na+ and K ' concentrations in SSG of rats exposed to microwaves for 15 and 30 min were found than in those exposed at 40 "C. On the other hand, exposure to hyperthermia at 40 "C or to microwaves for 1 h caused Na+ concentration to be increased by 68.7 and 59.5% and K+ concentration to be decreased by 29.6 and 21.74, respectively.