Perturbation of enzymatic activity of the HeLa neoplastic cells by cytostatic active electromagnetic treatments

The study of interactions of low frequency and intensity electromagnetic fields (100 Hz and 5.5 mT of LFI- EMF) with some membrane bound and intracellular enzymatic biomolecules of HeLa cells has revealed an enhancement of membranary Na+-K+-ATP-ase, intracell LDH, SOD and ALP activities, as well as a repression of cellular ATP-ase, CAT, ACP activities in the case of cEMF treatment. Moreover, dcEMF has intensified the enzymatic activity of cellular ATP-ase, Px, CAT, has accentuated MDA levels and has also reduced the functioning degree of membranary Na+-K+- ATP-ase and of intracellular LDH, SOD and ALP. In the case of Px, GSH-Px and lipid peroxidation interference with both EMF variants, we assist to the induction of a stimulator effect upon their activities. The different sense and amplitude of reactivity of neoplastic cells enzymatic systems to the electromagnetic field irradiation were dependent on the EMF application mode (continuous or discontinuous). These variations of the enzymatic activities could be due to a direct or indirect interaction of exogenous cEMF or dcEMF with cellular (plasmalemma) or subcellular (organelles) structures and intracellular biomolecules (enzymes, DNA, RNA etc.), as well as a summation of the exogen and endogen electromagnetic fields effects. Thus, EMF induces a significant cytostatic effect either by alteration of the HeLa cells membranary or metabolic processes, or by intracellular increased generation of free radicals

The cytostatic potential confirmation of some fungal autochthonous biopreparations upon HeLa neoplastic cells cultures

Some biopreparations of alkaloid-ergolinic nature have been extracted from hyphal and supernatant components, which were centrifugally separated from the submerged culture media of three strains of Claviceps purpurea (T1-3, T2-1 and T13-1), these being in different ontogenetic development stages (4, 6, 8, 10, and 12 days, respectively). In vitro testing of their interaction with cellular protein synthesis process of HeLa neoplastic cells cultures, has highlighted the cellular protein biosynthesis alteration, modifications of the protein dynamics sense and amplitude, as well as the cell cultures development inhibition. The protein synthesis inhibitory impact has confirmed the cytostatic action of these natural bioproducts, their cytostatic effectiveness being dependent of the Claviceps purpurea (T1-3, T2-1 and T13-1) strains specificity, the strain ontogenetic age, the biochemical nature of the intracellularly synthesized, stocked and extracellularly discharged substratum, as well as of their obtaining sources