Carbon monoxide--toxicity of low-dose application.

Abstract:

:Carbon monoxide (CO) has long been considered a purely toxic by-product of incomplete combustion processes. Acute exposure to high concentrations of CO is one of the leading causes of fatal poisoning in industrial countries. However, after two decades of intensive research, there is ample evidence that CO endogenously produced by heme oxygenase enzymes has essential physiological functions and is of vital importance for cellular hemostasis. Furthermore, exogenously applied CO in low concentrations mediates potent cytoprotective effects. An overwhelming number of different in vitro and in vivo models demonstrated the protective action of CO application, e.g., in ischemia/reperfusion, transplantation, oxidative stress, inflammation, and others. Protection by this gaseous molecule could be illustrated for most organs, most species, and for different routes of administration. Now being on the verge of entering clinical trials, the question emerges whether the administration of low-dose CO would be safe for patients when used as a potential therapeutic. Therefore, this review summarizes in particular toxicological data obtained from low-dose CO exposure and discusses its impact on a possible clinical application.

journal_name

Curr Pharm Biotechnol

authors

Schmidt R,Ryan H,Hoetzel A

doi

10.2174/138920112800399103

subject

Has Abstract

pub_date

2012-05-01 00:00:00

pages

837-50

issue

6

eissn

1389-2010

issn

1873-4316

pii

BSP/CPB/E-Pub/0000194-13-9

journal_volume

13

pub_type

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