Biophoton emission induced by heat shock

Katsuhiro Kobayashi, Hirotaka Okabe, Shinya Kawano, Yoshiki Hidaka, Kazuhiro Hara

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Ultraweak biophoton emission originates from the generation of reactive oxygen species (ROS) that are produced in mitochondria as by-products of cellular respiration. In healthy cells, the concentration of ROS is minimized by a system of biological antioxidants. However, heat shock changes the equilibrium between oxidative stress and antioxidant activity, that is, a rapid rise in temperature induces biophoton emission from ROS. Although the rate and intensity of biophoton emission was observed to increase in response to elevated temperatures, pretreatment at lower high temperatures inhibited photon emission at higher temperatures. Biophoton measurements are useful for observing and evaluating heat shock.

Original languageEnglish
Article numbere105700
JournalPloS one
Issue number8
Publication statusPublished - Aug 25 2014

All Science Journal Classification (ASJC) codes

  • General Biochemistry,Genetics and Molecular Biology
  • General Agricultural and Biological Sciences
  • General


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