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  • Title: Effects of chlordecone exposure on brain neurotransmitters: possible involvement of the serotonin system in chlordecone-elicited tremor.
    Author: Hong JS, Tilson HA, Uphouse LL, Gerhart J, Wilson WE.
    Journal: Toxicol Appl Pharmacol; 1984 Apr; 73(2):336-44. PubMed ID: 6200957.
    Abstract:
    The purpose of this study was to correlate the chlordecone-elicited tremor activity with alterations of brain neurotransmitters. A single injection of chlordecone (80 mg/kg, ip) significantly increased the brain levels of 5-hydroxyindoleacetic acid (5-HIAA) but did not affect the concentrations of dopamine, dihydroxphenylacetic acid, aspartate, taurine, glutamate, glycine, and gamma-aminobutyric acid (GABA). There was a dose- and time-related correlation between the increases in striatal 5-HIAA levels and tremor after chlordecone treatment. A subsequent study with pargyline indicated that the increase in striatal 5-HIAA level represented an increase in the turnover of serotonin. This study plus the previous finding that pizotifen (BC-105), a serotonin receptor blocker, attenuated chlordecone-elicited tremor strongly suggests a possible involvement of the serotonin system in mediating the tremor elicited by this insecticide.
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