Conradi S, Ronnevi L O, Vesterberg O
J Neurol Neurosurg Psychiatry. 1978 Nov;41(11):1001-4. doi: 10.1136/jnnp.41.11.1001.
The concentration of lead in the vastus lateralis muscle was determined in patients with amyotrophic lateral sclerosis and control subjects by flameless atomic absorption spectrophotometry. No statistically significant differences were found between these groups, and in both the figures were of the same magnitude as those earlier reported for normal individuals. Increased plasma lead concentrations do not seem to cause a significant deposition of lead in skeletal muscle. Therefore, plasma rather than skeletal muscle is the more likely source if pathological amounts of lead enter the motoneurones via the retrograde axoplasmic flow in amyotrophic lateral sclerosis.
采用无火焰原子吸收分光光度法测定了肌萎缩侧索硬化症患者和对照受试者股外侧肌中的铅浓度。两组之间未发现统计学上的显著差异,且两组数据的量级与之前报道的正常个体的数据相同。血浆铅浓度升高似乎不会导致铅在骨骼肌中显著沉积。因此,在肌萎缩侧索硬化症中,如果病理量的铅通过逆行轴浆流进入运动神经元,那么血浆而非骨骼肌更有可能是铅的来源。