{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T18:52:28Z","timestamp":1791226348005,"version":"4.1.0"},"reference-count":59,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2002,5,8]],"date-time":"2002-05-08T00:00:00Z","timestamp":1020816000000},"content-version":"vor","delay-in-days":7,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Applied Toxicology"],"published-print":{"date-parts":[[2002,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The site specificity of the percutaneous absorption of methyl salicylate (MeS) and the organophosphate nerve agent VX (<jats:italic>O<\/jats:italic>\u2010ethyl <jats:italic>S<\/jats:italic>\u2010(2\u2010diisopropylaminoethyl) methylphosphonothioate) was examined in anaesthetized domestic swine that were fully instrumented for physiological endpoints. Four different anatomical sites (ear, perineum, inguinal crease and epigastrium) were exposed to the MeS and the serum levels were measured over a 6\u2010h time period. The dose absorbed at the ear region was 11 \u03bcg cm<jats:sup>\u22122<\/jats:sup> with an initial flux of 0.063 \u03bcg cm<jats:sup>\u22122<\/jats:sup>min<jats:sup>\u22121<\/jats:sup>, whereas at the epigastrium region the dose absorbed was 3 \u03bcg cm<jats:sup>\u22122<\/jats:sup> with an initial flux of 0.025 \u03bcg cm<jats:sup>\u22122<\/jats:sup>min<jats:sup>\u22121<\/jats:sup>. For this reason further studies were carried out with VX on the ear and the epigastrium only. In animals treated with agent on the epigastrium, blood cholinesterase (ChE) activity began to drop 90 min after application and continued to decline at a constant rate for the remainder of the experiment to ca. 25% of awake control activity. At this time there were negligible signs of poisoning and the medical prognosis was judged to be good. In contrast, the ChE activity in animals receiving VX on the ear decreased to 25% of awake control values within 45 min and levelled out at 5\u20136% by 120 min. Clinical signs of VX poisoning paralleled the ChE inhibition, progressing in severity over the duration of the exposure. It was judged that these animals would not survive. The dramatic site dependence of agent absorption leading to vastly different toxicological endpoints demonstrated in this model system has important ramifications for chemical protective suit development, threat assessment, medical countermeasures and contamination control protocols. Copyright \u00a9 2002 Crown in the right of Canada. Published by John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/jat.838","type":"journal-article","created":{"date-parts":[[2002,8,25]],"date-time":"2002-08-25T19:28:18Z","timestamp":1030303698000},"page":"141-148","source":"Crossref","is-referenced-by-count":36,"title":["Site\u2010specific percutaneous absorption of methyl salicylate and VX in domestic swine"],"prefix":"10.1002","volume":"22","author":[{"given":"E. J. 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