The therapeutic potential of hydrogen sulfide: Separating hype from hope

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127 Citations (Scopus)

Abstract

Hydrogen sulfide (H2S) has become the hot new signaling molecule that seemingly affects all organ systems and biological processes in which it has been investigated. It has also been shown to have both proinflammatory and anti-inflammatory actions and proapoptotic and anti-apoptotic effects and has even been reported to induce a hypometabolic state (suspended animation) in a few vertebrates. The exuberance over potential clinical applications of natural and synthetic H2S-"donating" compounds is understandable and a number of these function-targeted drugs have been developed and show clinical promise. However, the concentration of H2S in tissues and blood, as well as the intrinsic factors that affect these levels, has not been resolved, and it is imperative to address these points to distinguish between the physiological, pharmacological, and toxicological effects of this molecule. This review will provide an overview of H2S metabolism, a summary of many of its reported "physiological" actions, and it will discuss the recent development of a number of H2S-donating drugs that show clinical potential. It will also examine some of the misconceptions of H2S chemistry that have appeared in the literature and attempt to realign the definition of "physiological" H2S concentrations upon which much of this exuberance has been established.

Original languageEnglish
JournalAmerican Journal of Physiology - Regulatory Integrative and Comparative Physiology
Volume301
Issue number2
DOIs
StatePublished - Aug 2011

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Hydrogen Sulfide
Biological Phenomena
Intrinsic Factor
Pharmaceutical Preparations
Toxicology
Vertebrates
Anti-Inflammatory Agents
Therapeutics
Pharmacology

Keywords

  • Gasotransmitter
  • Hydrogen sulfide-donating drugs
  • Ischemia reperfusion injury
  • Sulfur cycle
  • Vasoactivity

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

Cite this

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