Jonderko G, Tyrna E, Pietrzak J, Kotulska A
Med Pr. 1986;37(3):162-6.
Fifty-four subjects chronically exposed to high manganese concentrations due to professional melting of iron-manganese alloys have been examined. The threshold limit value was exceeded 3 to 4-fold. The minimum length of employment in exposure was 5 years, whereas the average-17.7 years. Control groups were matched by age, length of employment and energy expense. Among the determined parameters, i.e. IgG, IgA, IgM concentrations in blood serum and C3 and C4 elements of the complement--only the IgM concentration was significantly lower, whereas the others were not significantly different from those in relevant control groups.
对54名因职业接触铁锰合金熔炼而长期暴露于高锰浓度环境中的受试者进行了检查。其暴露浓度超过阈限值3至4倍。暴露工作的最短时长为5年，平均时长为17.7年。对照组在年龄、工作时长和能量消耗方面进行了匹配。在测定的参数中，即血清中的IgG、IgA、IgM浓度以及补体的C3和C4成分，只有IgM浓度显著较低，而其他参数与相应对照组相比无显著差异。
