Increased serum enzyme activity in microwave-exposed rats
Journal Article
·
· Radiat. Res.; (United States)
Heat stable serum enzymes were studied in rats exposed to microwaves (2.45 GHz, 120 Hz amplitude modulated) 24 hr after a single 4-hr exposure or immediately after 3 and 10 exposures to 0.1 to 55 mW/cm/sup 2/. In addition, stable colonic temperature at 41.5/sup 0/C for 30 min was maintained by microwave exposure in a group of five rats under barbiturate anesthesia. Alkaline phosphatase and lactic dehydrogenase did not increase as a result of microwave exposure. Increased serum glutamic pyruvic transaminase (GPT) and glutamic oxaloacetic transaminase (GOT) were noted in the 41.5/sup 0/C group 24 hr after exposure. A threshold body temperature for acute cellular injury after microwave exposure was demonstrated. The acute cellular injury could be in the liver. These mild elevations in the serum enzyme levels (mean +-SE, GOT = 167 +- 40 U/liter; GPT = 74 +- 26 U/liter) indicated that the injuries were not accompanied by any significant sequelae in the rat. From this threshold and colonic temperature (41.5/sup 0/C for 30 min) in barbiturate-anesthetized, miccrowave-exposed rats, we derived a tentative threshold for the whole-body average absorption rate at 14 W/kg (70 mW/cm/sup 2/ at 2.45 GHz for adult rats) for 4 hr. This tentative threshold is subject to changes by duration of exposure and by compounding variables influencing maintenance of body temperature.
- Research Organization:
- Univ. of Rochester, NY
- DOE Contract Number:
- AC02-76EV03490
- OSTI ID:
- 5652592
- Journal Information:
- Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 96:1; ISSN RAREA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550200 -- Biochemistry
560400* -- Other Environmental Pollutant Effects
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE PHOSPHATASE
AMINOTRANSFERASES
ANIMALS
BIOCHEMISTRY
BIOLOGICAL EFFECTS
CHEMISTRY
ELECTROMAGNETIC RADIATION
ENZYME ACTIVITY
ENZYMES
ESTERASES
HEMIACETAL DEHYDROGENASES
HYDROLASES
LACTATE DEHYDROGENASE
MAMMALS
MICROWAVE RADIATION
NITROGEN TRANSFERASES
OXIDOREDUCTASES
PHOSPHATASES
RADIATIONS
RATS
RODENTS
TRANSFERASES
VERTEBRATES
560400* -- Other Environmental Pollutant Effects
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE PHOSPHATASE
AMINOTRANSFERASES
ANIMALS
BIOCHEMISTRY
BIOLOGICAL EFFECTS
CHEMISTRY
ELECTROMAGNETIC RADIATION
ENZYME ACTIVITY
ENZYMES
ESTERASES
HEMIACETAL DEHYDROGENASES
HYDROLASES
LACTATE DEHYDROGENASE
MAMMALS
MICROWAVE RADIATION
NITROGEN TRANSFERASES
OXIDOREDUCTASES
PHOSPHATASES
RADIATIONS
RATS
RODENTS
TRANSFERASES
VERTEBRATES