Hydrogen sulfide (H2S), a gas with the characteristic odor of rotten eggs, is known for its toxicity and as an environmental hazard [1-5]. Recently H2S has been recognized as a signaling molecule of the cardiovascular, inflammatory and nervous systems. Alongside with nitric oxide (NO) and carbon monoxide, it is now referred to as the third endogenous gaseous transmitter . Inhalation of gaseous H2S and administration of compounds that donate H2S have been studied in various models of ischemia-reperfusion and circulatory shock [7-24].
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