Radio frequency-induced superoxide accumulation affected the growth and viability of Saccharomyces cerevisiae (baker's yeast)

Abstract

Overview

The advent of advanced electric technologies has spurred significant research into the biological impacts of electromagnetic fields (EMF). Notably, conflicts and uncertainties persist in the study results, with specific mechanisms of biophysical effects still unexplored.

Key Investigation

This study distinctly focuses on the influence of radio frequencies ranging from 2.6-5 MHz on Saccharomyces cerevisiae (baker's yeast). The frequencies tested operated at an exceptionally low power density of less than 0.1 mT, revealing significant, time-dependent alterations in yeast growth and cell viability.

• Growth Impact: Exposure to RF-EMF resulted in a 43.5% growth increase at 30 hours, which gradually diminished, culminating in a 20.7% growth retardation at 89 hours.
• Viability Changes: Cell viability improved by 70.1% at 8 hours but declined by 33.5% at 28 hours.
• Superoxide Accumulation: The increase in the exposure duration corresponded with heightened superoxide levels, adversely affecting the growth and viability of yeast cells.

Conclusion

The discovered wave band yielded a prominent biological effect, suggesting its potential utility in therapeutic techniques and medical applications. However, the study calls for further exploration to refine the understanding of efficient frequency, power density, and optimal exposure levels.