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Human & Experimental Toxicology
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*Compound via MeSH
*Substance via MeSH
Hazardous Substances DB
*CALCIUM COMPOUNDS
*CALCIUM, ELEMENTAL
*SARIN
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Histochemical Demonstration of Calcium Accumulation in Muscle Fibres after Experimental Organophosphate Poisoning

R.H. Inns

CDE Porton Down, Salisbury, Wilts SP4 0JQ, UK.

N.J. Tuckwell

CDE Porton Down, Salisbury, Wilts SP4 0JQ, UK.

J.E. Bright

CDE Porton Down, Salisbury, Wilts SP4 0JQ, UK.

T.C. Marrs

CDE Porton Down, Salisbury, Wilts SP4 0JQ, UK.

The LD50 of subcutaneously-injected sarin (GB: isopropyl methylphosphonofluoridate) in mice was 172 µg kg-1. Mice were treated with sarin at doses between 25 and 150 µg kg-1, administered subcutaneously. After sacrifice of the animals, the diaphragms were removed and stained for acetylcholinesterase activity and the presence of ionized calcium. Calcium was found in the diaphragms of those mice to which sarin had been administered at doses of 50 µg kg-1 or above. Calcium accumulation was not present in diaphragms from those animals that had received 25 µg kg-1. Calcium accumulation occurred earliest and remained longest in diaphragms from those animals receiving the highest doses. Accumulation of calcium was associated with end-plates, as demonstrated by an acetylcholinesterase histochemical method.

Human & Experimental Toxicology, Vol. 9, No. 4, 245-250 (1990)
DOI: 10.1177/096032719000900407
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