Tumaniants K. The influence of low-intensity, ultra-high frequency electromagnetic radiation on the invertebrates (planaria regeneration, nociception of snails)

The thesis presents research of the influence of 42,2 GHz, 10 mW/cm2 power density low-intensity electromagnetic radiation on planaria (Dugesia tigrina) regeneration and on nociception in snails (Helix albescens). The research shows that low-intensity, ultra-high frequency (UHF) electromagnetic radiation (EMR) intensifies regeneration in Dugesia tigrina. UHF EMR decreases nociception in snails. This anti-nociceptive effect is preceded by a short-term increase in thermo-sensitivity. The influence of UHF EMR on snails that were shielded from EMR limits the extent of hyperanalgesia without affecting the extent of the hypoanalgesic phase. The role of the opioid system at various stages in the modulation of nociception in UHF EMR-affected snails is not consistent. During days 1 through 3, the activity of the opioid system increases. During days 4 through 8 in instance animal and during days 9 through 11 in EMR-shielded animals, the anti-nociceptive effect of UHF EMR directly correlates to the activity of the opioid system. At the later stages of observation, the correlation between the opioid system and the anti-noceceptive effects of UHR EMR weakens. Repeated exposure to UHR EMR alters the structure of the spectra of infradian rhythmicity of regeneration planaria and nociception of snails.