Trimethyltin-induced changes in gross morphology of the hippocampus.
Acute exposure to trimethyltin (TMT) produces alterations in hippocampal morphology. The purpose of this study was to arrive at a simple method for quantitative assessment of the gross changes in morphology which could then be used as a correlate in studies of TMT toxicity. Adult Long-Evans male hooded rats were treated with a single dose of TMT chloride and sacrificed either (a) within 11 days; (b) following 30 days; or (c) 105 days following treatment. Among a variety of morphological measures explored, the easiest and most clearly dosage-related was length of the line of pyramidal cells, from CA1 through CA3c. TMT shortened this line in a dosage- and time-dependent manner. Loss of cells appeared to begin in CA3c and progress through CA3b and CA3a as a dosage and time since treatment increased. It was concluded that this measurement may provide a useful morphological correlate for physiological and behavioral studies of TMT toxicity.
D000818:Animals; D004305:Dose-Response Relationship, Drug; D006624:Hippocampus / Q000187:drug effects* / Q000473:pathology; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D014220:Trialkyltin Compounds / Q000633:toxicity*; D014298:Trimethyltin Compounds / Q000633:toxicity*
D014220:Trialkyltin Compounds; D014298:Trimethyltin Compounds