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Related Concept Videos

Magnetic Fields01:27

Magnetic Fields

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A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
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π Electron Effects on Chemical Shift: Overview01:27

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An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
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Radical Autoxidation01:20

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The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
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Radical Reactivity: Overview01:11

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Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...
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Oxygen Requirements and Growth Patterns01:29

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Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
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Oxidation of Phenols to Quinones01:17

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In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
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Author Spotlight: High-Throughput Measurement of Intracellular ROS Levels in Hepatocellular Lines
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Magnetic Fields and Reactive Oxygen Species.

Huizhen Wang1,2, Xin Zhang3,4

  • 1High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China. huizhenwang@hmfl.ac.cn.

International Journal of Molecular Sciences
|October 24, 2017
PubMed
Summary

Magnetic fields (MFs) can alter reactive oxygen species (ROS) levels in cells, often increasing them. However, results vary based on MF characteristics and biological samples, necessitating further research for clinical applications.

Keywords:
extremely low frequency electromagnetic field (ELF-EMF)magnetic field (MF)radio frequency electromagnetic radiation (RF-EMR)reactive oxygen species (ROS)static magnetic field (SMF)

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Area of Science:

  • Cellular Biology
  • Biophysics

Background:

  • Reactive oxygen species (ROS) are crucial signaling molecules in mammalian cells, with intracellular levels maintained by a balance of generation and elimination.
  • Dysregulation of ROS is implicated in various pathophysiological processes.

Purpose of the Study:

  • To review and synthesize existing research on the effects of magnetic fields (MFs) on cellular ROS levels.
  • To identify factors contributing to discrepancies in reported MF-induced ROS modulation.

Main Methods:

  • Literature review of studies investigating the impact of MFs on ROS in various biological systems.
  • Analysis of experimental parameters such as MF type, intensity, frequency, exposure duration, and biological sample variability.

Main Results:

  • Most studies indicate that MFs increase ROS levels in human, mouse, and rat cells and tissues.
  • Some studies report decreased or unaffected ROS levels, highlighting variability.
  • Discrepancies are attributed to differences in MF parameters, exposure/assay conditions, and biological samples.

Conclusions:

  • MFs have a complex and variable effect on ROS levels.
  • Systematic and mechanistic investigations are needed to understand MF-ROS interactions across diverse biological contexts.
  • Understanding MF-induced ROS modulation could lead to novel clinical applications, especially for ROS-related diseases.