National Institute for Occupational Safety and Health, Robert A. Taft Laboratories, 1150 Tusculum Avenue, Cincinnati, OH 45226, USA.
J Trace Elem Med Biol. 2019 Jan;51:130-137. doi: 10.1016/j.jtemb.2018.10.010. Epub 2018 Oct 10.
Regression analysis was used to estimate and test for relationships between the blood lead concentration and the concentrations of serum thyroid stimulating hormone and serum total thyroxine in adults, 20 years and older, participating in the third National Health and Nutrition Examination Survey. No relationship was found between the blood lead level and the concentration of serum thyroid stimulating hormone. The serum total thyroxine concentration decreased as the blood lead level increased in women, but not in men. The lowest concentration of blood lead at which a relationship could be detected was 2.1 μg/dL and 3.9 μg/dL for the non-pregnant and pregnant women, respectively. Hypothetical mechanisms of the action of lead are discussed.
回归分析用于估计和检验成年人(20 岁及以上)血液铅浓度与血清促甲状腺激素和血清总甲状腺素浓度之间的关系,这些成年人参与了第三次国家健康和营养检查调查。未发现血液铅水平与血清促甲状腺激素浓度之间存在关系。在女性中,随着血液铅水平的升高,血清总甲状腺素浓度降低,但在男性中则不然。可以检测到关系的最低血液铅浓度分别为 2.1μg/dL 和 3.9μg/dL,适用于非孕妇和孕妇。讨论了铅作用的假设机制。