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Energy metabolism enhancement is a known adaptive response to stress situations and Caenorhabditis elegans is a typical model organism to study the effects of environmental influences on biological systems.
Eggs and worms were either exposed to 0.5 mT (group 1), 1 mT (group 2), 2 mT (group 3), 3 mT (group 4) or not exposed (control group). All results were obtained from at least 3 replicates of the tests.
The tests on hatching rate and brood size showed no significant differences between exposure group 4 and the control group.
The amount of single metabolites was significantly increased in different exposure groups compared to the control group, without showing a regular trend with increasing magnetic flux densities or consistent results in the exposure groups. The gene expression of glyceraldehyde phosphate dehydrogenase-1 and -4, the GAPDH level and the enzyme activity were significantly increased in exposure group 4 compared to the control group, whereas the ATP level did not show any significant differences.
The food consumption was significantly decreased in exposure group 4 compared to the control group, while the mortality was not changed significantly.
The authors conclude that exposure of Caenorhabditis elegans to a 50 Hz magnetic field could enhance the energy metabolism while restricting the food intake.