Geomagnetic Storm Effects on the Calpain Family Calcium-Dependent Proteases of Some Invertebrate and Fish Species

Abstract

The effects of simulation of a geomagnetic storm (GMS) and its components on the calpain family of calcium-dependent proteases of some invertebrate and fish species has been studied. The animals of the experimental groups were exposed to the GMS for 2 h; the control group was kept in conditions of an undisturbed geomagnetic field. It was shown that the calpain family of calcium-dependent proteases of the studied invertebrate and fish representatives reacted to the GMS impact. It was found that the in vivo impact of the GMS and some of its components on the organisms led to a significant calpain activity decrease; the calciumdependent protease specimens isolated from intact invertebrate animals and fish were also significantly inactivated by the impact of these factors. The impact of the GMS on calpain activity was due to the geomagnetic fluctuations within the whole range of a recorded broadband signal. The results complement fundamental ideas about the principles and laws governing the impact of a GMS on living organisms and can be a basis for finding ways to cope with the negative effects of the GMS.