Metabolism of parathion and brain cholinesterase inhibition in aroclor 1254-treated and untreated caspian terrapin (Mauremys caspica rivulata, Emydidae, Chelonia) in comparison with two species of wild birds

Aminadav Yawetz*, Israel Sidis, Avital Gasith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

1. The mean level of PCB residues in the liver of the Caspian turtle collected in nature was 23 ppm, or approximately 20-fold greater than that detected in the two bird species tested. 2. Treatment of the turtles with aroclor 1254 resulted in a 30-fold increase in the level of PCB residues in the liver but did not cause any increase in the content of cytochrome P-450 and the desulfurase activity of this hemoprotein. 3. The Ki, value for acetylcholinesterase inhibition by paraoxon in brain homogenate of the Caspian terrapin was 3 and 2 orders of magnitude higher than that found in the African bulbul and the barn owl, respectively.

Original languageEnglish
Pages (from-to)377-382
Number of pages6
JournalComparative biochemistry and physiology. C: Comparative pharmacology
Volume75
Issue number2
DOIs
StatePublished - 1983

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