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Iron overload: Effects on cellular biochemistry.

Leilismara Sousa1, Marina M Oliveira1, Marco Túlio C Pessôa1

  • 1Laboratório de Bioquímica Celular, Universidade Federal de São João del Rei, Campus Centro-Oeste Dona Lindu, Divinópolis, MG, Brazil.

Clinica Chimica Acta; International Journal of Clinical Chemistry
|December 3, 2019
PubMed
Summary
This summary is machine-generated.

Iron overload causes cellular damage by acting as a pro-oxidant, affecting enzymes and homeostasis. Cells possess antioxidant systems and iron-binding proteins to prevent oxidative stress and regulate cell death pathways like ferroptosis.

Keywords:
Antioxidant systemIronMembrane enzymes

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Oxidative Stress

Background:

  • Iron is vital but can be toxic in excess, acting as a pro-oxidant.
  • Iron overload can disrupt cellular functions and lead to cell death.
  • Cellular mechanisms exist to manage iron levels and prevent damage.

Purpose of the Study:

  • To review the biochemical impacts of iron overload at the cellular level.
  • To explore how iron overload affects cellular structures and homeostasis.
  • To discuss the role of iron in regulating cell death, including ferroptosis.

Main Methods:

  • Literature review of biochemical and cellular studies on iron overload.
  • Analysis of the effects of excess iron on cellular components and processes.
  • Examination of cellular defense mechanisms against iron-induced oxidative stress.

Main Results:

  • Iron overload can damage plasma membranes and impair enzymes like Na, K-ATPase.
  • Disruption of ionic transport and cellular homeostasis occurs with excess iron.
  • Iron-responsive proteins (IRPs) play a key role in regulating cellular iron and processes like ferroptosis.

Conclusions:

  • Cellular antioxidant systems and iron-binding proteins are crucial for preventing iron toxicity.
  • Iron overload significantly impacts cellular biochemical processes and can trigger cell death pathways.
  • Understanding iron metabolism is key to addressing cellular damage and maintaining homeostasis.