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[Brain enzyme activity in irradiated sympathectomized rats]
Radiobiologiia
|November 1, 1985
Summary
Chemical sympathectomy and irradiation affect rat brain enzyme activity. While sympathectomy inhibits enzymes, subsequent irradiation partially restores hexokinase and cholinesterase, but not dehydrogenase activity.
Area of Science:
- Biochemistry
- Neuroscience
- Enzymology
Context:
- Investigates the impact of chemical sympathectomy and gamma irradiation on key metabolic enzymes in rat brain subcellular fractions.
- Examines the effects of guanethidine-induced sympathectomy and a 7 Gy irradiation dose on enzyme activity.
Purpose:
- To analyze the activity changes of hexokinase, glucose-6-phosphate dehydrogenase, and cholinesterase under combined experimental conditions.
- To determine the differential recovery patterns of these enzymes following sympathectomy and irradiation.
Summary:
- Sympathectomy significantly inhibited the activity of hexokinase, glucose-6-phosphate dehydrogenase, and cholinesterase.
- In irradiated sympathectomized rats, hexokinase and cholinesterase activities recovered to levels comparable to intact animals.
- Glucose-6-phosphate dehydrogenase activity remained inhibited even after irradiation in sympathectomized rats.
Impact:
- Provides insights into the neurochemical effects of sympathectomy and radiation exposure on brain metabolism.
- Highlights the differential sensitivity and recovery potential of key enzymes in the central nervous system.
- Contributes to understanding the biochemical consequences of combined treatments in neurological research.