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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...

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Related Experiment Video

Updated: Jun 13, 2026

Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator
06:08

Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator

Published on: May 19, 2023

Extracellular redox environments regulate adipocyte differentiation.

Barry R Imhoff1, Jason M Hansen

  • 1Division of Pulmonary, Allergy/Immunology, Cystic Fibrosis and Sleep, Emory Department of Pediatrics, Emory University, Atlanta, GA 30322, USA.

Differentiation; Research in Biological Diversity
|May 18, 2010
PubMed
Summary
This summary is machine-generated.

Oxidized extracellular redox states are linked to obesity. This study found that adipocytes promote an oxidized extracellular environment, potentially driving further fat cell development and obesity.

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Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
08:34

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

Related Experiment Videos

Last Updated: Jun 13, 2026

Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator
06:08

Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator

Published on: May 19, 2023

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
08:34

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

Area of Science:

  • Biochemistry
  • Cell Biology
  • Metabolic Disease Research

Background:

  • Oxidized extracellular redox states are implicated in obesity-related diseases like diabetes and heart disease.
  • The precise relationship between extracellular redox state and obesity remains largely unexplored.
  • Reactive oxygen species (ROS) play a role in cellular signaling and metabolism.

Purpose of the Study:

  • To investigate the impact of extracellular redox potential on adipocyte function and differentiation.
  • To determine if adipocytes actively modify their extracellular redox environment.
  • To explore the in vivo relevance of these findings in a diet-induced obesity mouse model.

Main Methods:

  • Utilized 3T3-L1 preadipocytes and differentiated adipocytes to study cellular responses to varying extracellular redox potentials (E(h)).
  • Measured intracellular and mitochondrial reactive oxygen species (ROS) production.
  • Assessed adipogenesis via lipid accumulation and gene expression markers.
  • Analyzed plasma redox state (glutathione and cysteine) in a diet-induced obesity mouse model before and after an 8-week high-fat diet.

Main Results:

  • Oxidizing extracellular E(h) increased intracellular and mitochondrial ROS production in 3T3-L1 cells.
  • Differentiated adipocytes exhibited a heightened ROS response and actively shifted extracellular E(h) towards a more oxidized state compared to preadipocytes.
  • Adipogenesis was enhanced under oxidizing extracellular conditions and suppressed under reducing conditions.
  • In overweight mice, plasma cysteine redox potential was significantly oxidized, while glutathione redox potential remained unchanged.

Conclusions:

  • Adipocytes, both in vitro and in vivo, preferentially promote a more oxidized extracellular redox state.
  • This shift towards oxidation by adipocytes may serve to enhance further adipogenesis.
  • Extracellular redox balance is a critical factor in regulating fat cell development and could be a therapeutic target for obesity.