Abstract:Prolonged administration of sublethal doses of organophosphorus cholinesterase inhibitors results in adaptation to their toxicity. In order to investigate this phenomenon, we exposed rats to 0.2, 0.3 or 0.4 LD 50 of tabun sc daily during four weeks. AChE activities in erythrocytes, diaphragm and brain were inhibited dose-dependently after days 7 and 14 of the study and started to recover thereafter, except after 0.4 LD 50 . Tabun 0.3 LD 50 decreased body weight gain, food and water consumption during the first… Show more
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