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- W2079488878 abstract "Sulfur mustard (SM) (di-2-chlorethyl sulfide), used for chemical warfare in World War I, is a highly reactive radiomimetic alkylating agent. When applied to the skin of rabbits and guinea pigs, it produced vascular leakage, leukocyte infiltration, and slow death of basal epidermal cells. Thirty to sixty minutes after exposure to SM, injury to the superficial microvasculature (beneath the SM application site) was detected by measuring vascular leakage with Evans blue dye and also with horseradish peroxidase. At this same time, injury to the superficial fibroblasts was observed ultrastructurally; and an unexpectedly high percentage of basophils was found among the early infiltrating granulocytes. At 2 to 4 hr, the vascular leakage ceased, and had resumed by 8 hr in a more diffuse form. At this time, the basal epidermal cells showed pyknotic nuclei, an increase in their lysosomal enzymes (observed histochemically), and autophagic vacuoles (observed ultrastructurally). Leukocyte infiltration was marked, consisting mostly of heterophils (PMN) with a reduced percentage of basophils. During the next 24 to 72 hr, the entire inflammatory reaction reached its peak; and a superficial, crust-covered ulcer developed. Then, over the next 10 days, the lesion gradually subsided with concomitant repair and healing. Glucocorticosteroids decreased the early edematous phase, but did not affect the rate of healing. These findings suggest that the skin response to sulfur mustard has an immediate and a delayed phase. The immediate phase, i.e., within the first hour, was characterized by injury to the superficial fibroblasts and to the endothelium of superficial capillaries and venules, possibly because of direct damage to their cell membranes. At this time, a restricted vascular leakage and a selective granulocyte infiltration containing many basophils occurred. The delayed phase, which became evident after 8 hr, was characterized by the death of basal epidermal cells, probably because of DNA damage. This phase was accompanied by generalized vascular leakage, by massive heterophil immigration, and eventually by ulceration." @default.
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- W2079488878 date "1984-04-01" @default.
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- W2079488878 title "Pathogenesis of skin lesions caused by sulfur mustard*1" @default.
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- W2079488878 doi "https://doi.org/10.1016/0272-0590(84)90139-8" @default.
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