Histochemical Demonstration of Calcium Accumulation in Muscle Fibres after Experimental Organophosphate Poisoning

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...

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Veröffentlicht in:Human & experimental toxicology 1990-07, Vol.9 (4), p.245-250
Hauptverfasser: Inns, R.H., Tuckwell, N.J., Bright, J.E., Marrs, T.C.
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container_issue 4
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container_title Human & experimental toxicology
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creator Inns, R.H.
Tuckwell, N.J.
Bright, J.E.
Marrs, T.C.
description 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.
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subjects Acetylcholinesterase - metabolism
Animals
Calcium - metabolism
Diaphragm - enzymology
Histocytochemistry
Lethal Dose 50
Male
Mice
Muscles - metabolism
Muscles - pathology
Organophosphate Poisoning
Sarin - poisoning
Sarin - toxicity
title Histochemical Demonstration of Calcium Accumulation in Muscle Fibres after Experimental Organophosphate Poisoning
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