Oxidants and antioxidants in sulfur mustard-induced injury.
Sulfur mustard (SM) is a chemical weapon that targets the skin, eyes, and lung. It was first employed during World War I and it remains a significant military and civilian threat. As a bifunctional alkylating agent, SM reacts with a variety of macromolecules in target tissues including nucleic acids, proteins and lipids, as well as small molecular weight metabolites such as glutathione. By alkylating subcellular components, SM disrupts metabolism, a process that can lead to oxidative stress. Evidence for oxidative stress in tissues exposed to SM or its analogs include increased formation of reactive oxygen species, the presence of lipid peroxidation products and oxidized proteins, and increases in antioxidant enzymes such as superoxide dismutase, catalase, and glutathione-S-transferase. Inhibition of antioxidant enzymes including thioredoxin reductase by SM can also disrupt cellular redox homeostasis. Consistent with these findings, SM-induced toxicity has been shown to be reduced by antioxidants in both in vitro and in vivo models. These data indicate that drugs that target oxidative stress pathways may represent important candidates for reducing SM-induced tissue injury.
Laskin
Jeffrey D
JD
Department of Environmental and Occupation Medicine, UMDNJ-Robert Wood Johnson Medical School, Piscataway, New Jersey, USA. jlaskin@eohsi.rutgers.edu
Black
Adrienne T
AT
Jan
Yi-Hua
YH
Sinko
Patrick J
PJ
Heindel
Ned D
ND
Sunil
Vasanthi
V
Heck
Diane E
DE
Laskin
Debra L
DL
D000818:Animals; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D055370:Lung Injury / Q000139:chemically induced* / Q000188:drug therapy / Q000378:metabolism*; D009151:Mustard Gas / Q000737:chemistry / Q000633:toxicity*; D016877:Oxidants / Q000737:chemistry / Q000378:metabolism*; D018384:Oxidative Stress / Q000187:drug effects / Q000502:physiology
D000975:Antioxidants; D016877:Oxidants; D009151:Mustard Gas