Chlordecone intoxication in man. II. Ultrastructure of peripheral nerves and skeletal muscle

A. J. Martinez, J. R. Taylor, Peter J Dyck, S. A. Houff, E. Isaacs

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Tremors, mental changes, opsoclonus, muscle weakness, gait ataxia, incoordination, and slurred speech developed in several employees in a Virginia chemical plant during the summer of 1975. Epidemiologic and clinical studies suggested that the chlorinated insecticide chlordecone (Kepone) was responsible. Severity of symptoms seemed directly related to dose and duration of exposure. Five sural nerve and six muscle biopsy specimens were examined by light microscopy and electronmicroscopy. The sural nerves were also evaluated by computerized morphometry, which showed considerable decrease in the number of unmyelinated fibers and lesser abnormalities of myelinated fibers. Compared with the nerves of the control subjects, those of patients may have had an increase in Reich and Elzholz bodies, and a modest increase in endoneurial collagen. There were occasional ''collagen pockets'', stacks of Schwann cell cytoplasmic membranes, redundant Schwann cell cytoplasmic folds, and fewer unmyelinated axons. The skeletal muscles contained increased amounts of lipofuscin and lipidlike droplets in subsarcolemmal areas and within intermyofibrillary spaces; the significance of this is unknown. Fiber size variability, type 1 predominance, and type grouping were present in three cases. All results strongly suggest that chlordecone is a neurotoxic agent predominantly affecting Schwann cells and unmyelinated fibers of peripheral nerves.

Original languageEnglish (US)
Pages (from-to)631-635
Number of pages5
JournalNeurology
Volume28
Issue number7
StatePublished - 1978

Fingerprint

Chlordecone
Schwann Cells
Peripheral Nerves
Sural Nerve
Skeletal Muscle
Collagen
Gait Ataxia
Cell Membrane
Ocular Motility Disorders
Lipofuscin
Muscle Weakness
Tremor
Ataxia
Insecticides
Axons
Epidemiologic Studies
Microscopy
Biopsy
Light
Muscles

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Martinez, A. J., Taylor, J. R., Dyck, P. J., Houff, S. A., & Isaacs, E. (1978). Chlordecone intoxication in man. II. Ultrastructure of peripheral nerves and skeletal muscle. Neurology, 28(7), 631-635.

Chlordecone intoxication in man. II. Ultrastructure of peripheral nerves and skeletal muscle. / Martinez, A. J.; Taylor, J. R.; Dyck, Peter J; Houff, S. A.; Isaacs, E.

In: Neurology, Vol. 28, No. 7, 1978, p. 631-635.

Research output: Contribution to journalArticle

Martinez, AJ, Taylor, JR, Dyck, PJ, Houff, SA & Isaacs, E 1978, 'Chlordecone intoxication in man. II. Ultrastructure of peripheral nerves and skeletal muscle', Neurology, vol. 28, no. 7, pp. 631-635.
Martinez, A. J. ; Taylor, J. R. ; Dyck, Peter J ; Houff, S. A. ; Isaacs, E. / Chlordecone intoxication in man. II. Ultrastructure of peripheral nerves and skeletal muscle. In: Neurology. 1978 ; Vol. 28, No. 7. pp. 631-635.
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