TY - JOUR
T1 - Nervous System Degeneration Produced by the Industrial Solvent Methyl n-Butyl Ketone
AU - Spencer, Peter S.
AU - Schaumburg, Herbert H.
AU - Raleigh, Robert L.
AU - Terhaar, Clarence J.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1975/4
Y1 - 1975/4
N2 - Because of a number of cases of peripheral neuropathy that occurred in factory workers employed in a fabricprinting plant in 1973, chronic inhalation experiments have been conducted using the printing-ink solvents methyl n-butyl ketone (MBK) and methyl iso-butyl ketone (MIBK). After four months of intermittent respiratory exposure to 1,300 parts per million (ppm) MBK, all six rats tested developed severe symmetric weakness in the hindlimbs. Morphological studies showed massive focal axonal enlargements containing abnormally large numbers of neurofilaments and dying-back axonal degeneration in peripheral and central nerve fibers. Six rats similarly exposed for five months to 1,500 ppm of MIBK showed minimal distal axonal change, but remained neurologically intact. The principal conclusion of this study is that MBK is a neurotoxin in rats.
AB - Because of a number of cases of peripheral neuropathy that occurred in factory workers employed in a fabricprinting plant in 1973, chronic inhalation experiments have been conducted using the printing-ink solvents methyl n-butyl ketone (MBK) and methyl iso-butyl ketone (MIBK). After four months of intermittent respiratory exposure to 1,300 parts per million (ppm) MBK, all six rats tested developed severe symmetric weakness in the hindlimbs. Morphological studies showed massive focal axonal enlargements containing abnormally large numbers of neurofilaments and dying-back axonal degeneration in peripheral and central nerve fibers. Six rats similarly exposed for five months to 1,500 ppm of MIBK showed minimal distal axonal change, but remained neurologically intact. The principal conclusion of this study is that MBK is a neurotoxin in rats.
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U2 - 10.1001/archneur.1975.00490460035002
DO - 10.1001/archneur.1975.00490460035002
M3 - Article
C2 - 1124984
AN - SCOPUS:0016612705
SN - 0003-9942
VL - 32
SP - 219
EP - 222
JO - Archives of Neurology
JF - Archives of Neurology
IS - 4
ER -