title: Biophoton emission induced by heat shock.
abstract: 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.
authors.affiliation: The Graduate School of Systems Life Sciences, Kyushu University, Fukuoka City, Fukuoka Pref, Japan.
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Kobayashi
authors.affiliation: The Graduate School of Systems Life Sciences, Kyushu University, Fukuoka City, Fukuoka Pref, Japan; Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka City, Fukuoka Pref, Japan.
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Okabe
authors.affiliation: Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka City, Fukuoka Pref, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Kawano
authors.affiliation: Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka City, Fukuoka Pref, Japan.
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hidaka
authors.affiliation: The Graduate School of Systems Life Sciences, Kyushu University, Fukuoka City, Fukuoka Pref, Japan; Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka City, Fukuoka Pref, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Hara
mesh_terms: D018869:Heat-Shock Response / Q000502:physiology*; D006358:Hot Temperature; D027805:Phaseolus / Q000378:metabolism*; D017785:Photons; D018517:Plant Roots / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism*
chemical_list: D017382:Reactive Oxygen Species