Results 1 to 10 of about 207,495 (287)
Magnetic field effects in biology from the perspective of the radical pair mechanism. [PDF]
J R Soc Interface, 2022 A large and growing body of research shows that weak magnetic fields can significantly influence various biological systems, including plants, animals, and humans. However, the underlying mechanisms behind these phenomena remain elusive. It is remarkable that the magnetic energies implicated in these effects are much smaller than thermal energies. Here
Zadeh-Haghighi H, Simon C.
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Sensing Magnetic Directions in Birds: Radical Pair Processes Involving Cryptochrome [PDF]
Biosensors, 2014 Birds can use the geomagnetic field for compass orientation. Behavioral experiments, mostly with migrating passerines, revealed three characteristics of the avian magnetic compass: (1) it works spontaneously only in a narrow functional window around the ...
Roswitha Wiltschko, Wolfgang Wiltschko
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An open quantum system approach to the radical pair mechanism. [PDF]
Sci Rep, 2018 AbstractThe development of the radical pair mechanism has allowed for theoretical explanation of the fact that magnetic fields are observed to have an effect on chemical reactions. The mechanism describes how an external magnetic field can alter chemical yields by interacting with the spin state of a pair of radicals.
Adams B, Sinayskiy I, Petruccione F.
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The Radical-Pair Mechanism of Magnetoreception [PDF]
Annual Review of Biophysics, 2016 Although it has been known for almost half a century that migratory birds can detect the direction of the Earth's magnetic field, the primary sensory mechanism behind this remarkable feat is still unclear. The leading hypothesis centers on radical pairs—magnetically sensitive chemical intermediates formed by photoexcitation of cryptochrome proteins in ...
P.J. Hore, Henrik Mouritsen
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Chemical magnetoreception in birds: the radical pair mechanism. [PDF]
Proc Natl Acad Sci U S A, 2009 Migratory birds travel vast distances each year, finding their way by various means, including a remarkable ability to perceive the Earth's magnetic field. Although it has been known for 40 years that birds possess a magnetic compass, avian magnetoreception is poorly understood at all levels from the primary biophysical detection events, signal ...
Rodgers CT, Hore PJ.
europepmc +5 more sources
Electron-Electron Dipolar Interaction Poses a Challenge to the Radical Pair Mechanism of Magnetoreception. [PDF]
J Phys Chem Lett, 2020 A visual magnetic sense in migratory birds has been hypothesized to rely on a radical pair reaction in the protein cryptochrome. In this model, magnetic sensitivity originates from coherent spin dynamics, as the radicals couple to magnetic nuclei via hyperfine interactions. Prior studies have often neglected the electron-electron dipolar (EED) coupling
Babcock NS, Kattnig DR.
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HEK293 cell response to static magnetic fields via the radical pair mechanism may explain therapeutic effects of pulsed electromagnetic fields. [PDF]
PLoS ONE, 2020 PEMF (Pulsed Electromagnetic Field) stimulation has been used for therapeutic purposes for over 50 years including in the treatment of memory loss, depression, alleviation of pain, bone and wound healing, and treatment of certain cancers.
Marootpong Pooam +4 more
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Quantum theory of a potential biological magnetic field sensor: Radical pair mechanism in flavin adenine dinucleotide biradicals [PDF]
Computational and Structural Biotechnology JournalRecent studies in vitro and in vivo suggest that flavin adenine dinucleotide (FAD) on its own might be able to act as a biological magnetic field sensor.
Amirhosein Sotoodehfar +3 more
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Quantum Information Processing in the Radical-Pair Mechanism: Haberkorn theory violates the Ozawa entropy bound [PDF]
Physical Review E, 2017 Radical-ion-pair reactions, central for understanding the avian magnetic compass and spin transport in photosynthetic reaction centers, were recently shown to be a fruitful paradigm of the new synthesis of quantum information science with biological ...
Kominis, I. K., Mouloudakis, K.
core +3 more sources
Frontiers in Quantum Science and TechnologyElectromagnetic radiation at telecommunication frequencies has been reported to have biological effects, particularly affecting the production of reactive oxygen species, raising the question of potential mechanisms.
Owaiss Talbi +8 more
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