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Related Concept Videos

Redox Reactions01:27

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
Redox Reactions01:24

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
Redox Equilibria: Overview01:23

Redox Equilibria: Overview

A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
Regulation of the Cardiovascular System01:27

Regulation of the Cardiovascular System

The regulation of the cardiovascular system allows the body to adapt to various demands and maintain homeostasis.
The regulation of the cardiovascular system involves the autonomic nervous system (ANS), baroreceptors, and chemoreceptors, ensuring that heart rate and blood pressure are appropriately modulated in response to varying physiological demands.
The ANS comprises two main divisions: the sympathetic and parasympathetic nervous systems. The sympathetic nervous system enhances...
Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

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.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...

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Related Experiment Video

Updated: Jun 6, 2026

Alternative Methods for the Detection of Superoxide Anion Generation in Platelets
06:35

Alternative Methods for the Detection of Superoxide Anion Generation in Platelets

Published on: March 29, 2024

Redox signalling in cardiovascular disease.

Rebecca L Charles1, Philip Eaton

  • 1King's College London, Department of Cardiology, Cardiovascular Division, The Rayne Institute, St Thomas' Hospital, London, UK.

Proteomics. Clinical Applications
|December 8, 2010
PubMed
Summary

Oxidative stress is key in cardiovascular disease, but oxidants also signal in healthy cells. This review explores redox signalling, protein modifications, and proteomic methods in cardiovascular biology.

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Last Updated: Jun 6, 2026

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Area of Science:

  • Cardiovascular Biology
  • Cellular Signalling
  • Biochemistry

Background:

  • Oxidative stress is linked to cardiovascular disease pathogenesis.
  • Oxidants function as signaling molecules in healthy and diseased tissues.
  • Cellular redox state influences biomolecule and cell function.

Purpose of the Study:

  • To review redox signalling in the cardiovascular system.
  • To focus on the molecular basis of protein redox sensing and modifications.
  • To discuss proteomic approaches in cardiovascular redox research.

Main Methods:

  • Literature review of redox signalling in cardiovascular biology.
  • Focus on post-translational oxidative modifications of proteins.
  • Discussion of proteomic studies identifying redox-sensitive proteins.

Main Results:

  • Oxidants act as signaling molecules, not just injury agents.
  • Post-translational modifications link redox state to cell function.
  • Proteomics aids in identifying redox-sensitive cardiac proteins.

Conclusions:

  • Redox signalling is central to cardiovascular function and disease.
  • Understanding protein redox modifications is crucial.
  • Proteomics offers powerful tools for studying cardiovascular redox biology.