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Nitric oxide in septic shock.

M A Titheradge1

  • 1School of Biological Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK. m.a.titheradge@sussex.ac.uk

Biochimica Et Biophysica Acta
|May 13, 1999
PubMed
Summary

Septic shock, a major cause of death, involves excessive nitric oxide (NO) from inducible nitric oxide synthase (iNOS). This NO production contributes to organ failure and cardiovascular dysfunction in septic shock patients.

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Area of Science:

  • Critical care medicine
  • Pathophysiology
  • Molecular biology

Background:

  • Septic shock is a leading cause of mortality in trauma and surgical patients.
  • It presents with hypotension, vascular collapse, and multi-organ failure.
  • Excessive nitric oxide (NO) production is implicated in its pathogenesis.

Purpose of the Study:

  • To discuss the role of excessive nitric oxide (NO) in septic shock.
  • To explore the induction of inducible nitric oxide synthase (iNOS) and its signaling pathways.
  • To examine NO's contribution to cellular energy dysfunction and organ abnormalities.

Main Methods:

  • Review of literature on septic shock and nitric oxide pathways.
  • Analysis of signal-transduction mechanisms for iNOS induction.
  • Discussion of NO's impact on cellular energy metabolism.
  • Examination of NO's effects on cardiovascular and hepatic function.

Main Results:

  • Excessive NO production, via cytokine-induced iNOS, is central to septic shock development.
  • iNOS induction involves complex signal-transduction pathways.
  • NO contributes to cellular energy deficits and impaired cardiovascular and liver function.

Conclusions:

  • Targeting excessive NO production or iNOS induction may offer therapeutic strategies for septic shock.
  • Understanding NO's role in cellular dysfunction is crucial for managing septic shock.
  • Further research into iNOS regulation and NO's downstream effects is warranted.

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