WEB-031Original text reviewed
58.4 GHz: pulse timing changes the cellular heat response
The reported finding
Pulsed exposure produced almost fivefold greater caspase-3 activation and 58% greater HSP27 phosphorylation than continuous exposure.
Reading it carefully
Deliberate hyperthermia experiment, with three culture plates per condition. This demonstrates thermal pulse effects; it is not a test of low-intensity wireless exposure or evidence of non-thermal injury.
Inside the study
Technology connection
60 GHz-region or adjacent-band biology; not an experiment with a WiGig device and not evidence of an oxygen-deprivation mechanism.
Publication type
Original journal research
Exposure conditions
58.4 GHz; 90 min; pulses 1.5 s long every 20 s. Average steady-state temperature about 42.3°C; peaks about 49°C.
Design & controls
A375 melanoma cells; continuous versus amplitude-modulated pulsed heating; temperature mapping and fluorescence assays.
Statistics
See the original results; effect sizes were not independently recalculated.
Related research & shared cohorts
Rennes exposure programme; distinct protocol from the 60.4 GHz metabolomic study.
The protection question raised
Which exposure conditions reproduce this finding, and what would establish its relevance beyond the experimental model?
Source verification
Original methods/results and interpretation reviewed; raw data and supplements were not independently audited.
Where to find the result
Original methods and results
Editorial notices
Linked Europe PMC/PubMed notice fields checked 21 October 2026; no correction/retraction surfaced for this record. Publisher/citation screening is not exhaustive.
Funding
Reported funder(s): https://doi.org/10.13039/501100007546 Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES), https://doi.org/10.13039/501100004794 Centre National de la Recherche Scientifique (National Center for Scientific Research), The EU through the European Regional Development Fund (ERDF), and by the Brittany Region, Ministry of Higher Education and Research, Rennes Métropole and Conseil Départemental, through the CPER Project SOPHIE / STIC & Ondes.. Grant identifiers: 5 G and MEMO projects, INSIS grant “Bioelectromagnetics: from engineering to biomedical applications.
Conflicts of interest
See original disclosure; no independently verified conflict assessment.
Original publication
Rosa Orlacchio; Yann Le Page; Yves Le Dréan; Rémy Le Guével; Ronan Sauleau; Stanislav Alekseev; Maxim Zhadobov. Millimeter-wave pulsed heating in vitro: cell mortality and heat shock response. Scientific reports. 2019. doi:10.1038/s41598-019-51731-7.