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Related Concept Videos

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters10:38

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Circadian clocks function within individual cells, i.e., they are cell-autonomous. Here, we describe methods for generating cell-autonomous clock models using non-invasive, luciferase-based real-time bioluminescence technology. Reporter cells provide tractable, functional model systems for studying circadian...
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Related Experiment Video

Updated: Jan 19, 2026

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
10:38

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters

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Weak radiofrequency fields affect the insect circadian clock.

Premysl Bartos1, Radek Netusil1, Pavel Slaby1

  • 1Department of Experimental Biology, Section of Animal Physiology and Immunology, Faculty of Science, Masaryk University, Czech Republic.

Journal of the Royal Society, Interface
|September 19, 2019
PubMed
Summary
This summary is machine-generated.

Weak radiofrequency (RF) fields slow down the circadian clock in German cockroaches, similar to static magnetic fields. This suggests internal clocks are sensitive to low-intensity RF exposure, impacting biological rhythms.

Keywords:
circadian clockfree-running rhythminsectsmagnetic fieldmagnetoreceptionradiofrequency field

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Area of Science:

  • Chronobiology
  • Animal Physiology
  • Electromagnetic Biology

Background:

  • Circadian rhythms in organisms like *Drosophila* are known to be sensitive to static magnetic fields (MFs).
  • Man-made radiofrequency (RF) electromagnetic fields can affect animal orientation at very low intensities (nanotesla range).

Purpose of the Study:

  • To investigate the effect of weak RF fields on the circadian rhythm of the German cockroach (*Blatella germanica*).
  • To compare the effects of static MFs and RF fields on the cockroach's internal clock.

Main Methods:

  • Exposure of German cockroaches to static magnetic fields (MFs) under dim UV light.
  • Exposure of German cockroaches to weak broadband radiofrequency (RF) fields in a near-zero static magnetic field environment.

Main Results:

  • Static MFs were observed to slow down the cockroach circadian clock rhythm.
  • Significantly weaker RF fields (300 times less intense) also slowed the cockroach clock rhythm.
  • The observed effects occurred even in a near-zero static magnetic field environment.

Conclusions:

  • The internal circadian clock of organisms, exemplified by the German cockroach, is sensitive to weak RF fields.
  • These findings suggest a potential influence of man-made RF fields on various clock-dependent biological events.