THE INFLUENCE OF MODIFIED EMF ON THE VIABILITY OF HEAT SHOCKED DROSOPHILA MELANOGASTER


Lednyiczky G.1, Sakharov D.2, Vaiserman A.3, Koshel’ N. 3





1 Hippocampus Research Facilities, H-1092 Budapest, Ráday u. 8., Hungary;
Tel:+361.299.0200,
email: hippocam@hippocampus-brt.com
2 R.E. Kavetsky Institute of Pathology, Oncology and Radiobiology, The National Academy of Science of the Ukraine, Kiev, Ukraine
3 Institute of gerontology, The National Academy of medicine of the Ukraine, Kiev, Ukraine

The Information that formed background of the work

• Over the last two decades, numerous data have appeared that support the biological importance of extremely-low-frequency electromagnetic fields (ELF-EMF). Endogenous and Exogenous components of ambient electromagnetic fields seem to play a regulator role with regard to biological processes that help an organism to maintain homeostasis [Wever R.A., 1985; Choy R. et al., 1987, Recent Advances, 1992; Ho M.-W., 1994].
• Several investigations have shown that weak ELF magnetic fields can adversely affect the early embryonic development of a bio-object [Ho M.-W., 1992; Ubeda A., 1994], which increases the proportion of early deaths and developmental abnormalities.
• Finally, in some reports [Adair R.K., 1995, ORAU review 1992], authors argue that there is no convincing evidence to support the contention that exposure to weak ELF EMFs is a demonstrable health hazard nor that it can express beneficial influence.
• We consider that it is possible to help clear the current controversy over whether weak EMF are beneficial, inactive, or detrimental to biological systems if one supposes that artificial, biologically active EMFs only imitate the resonant parameters of Endogenous and/or Exogenous components of regulator EMF and thus produce the observed effects [Choy R. et al., 1987; Anninos P.A., 1992; Rein G., 1995].
• Also, device-generated EMFs can interfere with regulator EMFs, thus producing pathological effects [Ho M.-W., 1992; Ubeda A., 1994] and mitigating previously observed effects [Litovitz T., 1994].
• In addition it is noteworthy that “a healthy (normal) biological system residing in its homeostatic (i.e., stable-steady) state is not affected by currents of physiologically acceptable magnitudes. If the system resides in stressful (or unstable-steady) state, small perturbations may produce large changes in the state of the system” [Vodovnik L., 1995]. This is supported by theoretical [Vodovnik L., 1995] and clinical studies on the effects of weak EM stimuli [Andreev E., 1984].
• In order to confirm these suppositions and to shed light onto mechanisms of the interaction of weak EMF and biological systems, we study the influence of endogenous ELF EMF on the aging and vitality of fruitflies. Heat shock treated chrysalises were chosen as the object of influence because it is the unstable-steady stage of development that is established due to developmental processes of metamorphosis and heat-shock as well.


In this investigation, the vitality of adult flies (imago) is studied. During the early chrysalises developmental stage, flies underwent the influence of a heat-shock and the following influence of endogenous ELF EMF: