Effects of sodium para-aminosalicylic acid on chelation treatment in Pb-exposed mice

Lead (Pb) is a corrosion-resistant, heavy, non-ferrous metal. Several metal chelators have been used for the treatment of Pb poisoning. However, the efficacy of sodium para-aminosalicylic acid (PAS-Na) in enhancing Pb excretion has yet to be fully characterized. Healthy male mice (90) were divided i...

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Published in:Toxicology and industrial health 2023-08, Vol.39 (8), p.464-470
Main Authors: Li, Yan, Liang, Yuan, Fang, Yuan-yuan, Chen, Jing, Zheng, Xiao-wei, Zhou, Wu-wang, Lu, Li-li, Aschner, Michael, Ou, Shi-yan, Jiang, Yue-ming
Format: Article
Language:English
Subjects:
Acetic acid
Atomic absorption spectroscopy
Blood
Chelating agents
Chelation
Chloral
Chloral hydrate
Copper
Corrosion resistance
Edetic acid
Excretion
Heavy metals
Lead
Manganese
Nonferrous metals
Poisoning
Sodium
Spectral analysis
Spectrometry
Urine
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Summary:Lead (Pb) is a corrosion-resistant, heavy, non-ferrous metal. Several metal chelators have been used for the treatment of Pb poisoning. However, the efficacy of sodium para-aminosalicylic acid (PAS-Na) in enhancing Pb excretion has yet to be fully characterized. Healthy male mice (90) were divided into six groups, the normal control group was intraperitoneally (i.p.) injected with saline and the remaining group of mice i.p. 120 mg/kg Pb acetate. Four hour later, mice were subcutaneously (back) injected (s.c.) with (80, 160, 240 mg/kg) PAS-Na or 240 mg/kg edetate calcium disodium (CaNa2EDTA) or an equivalent amount of saline, once per day for 6 days. After 24-h urine sample collections, the animals were anesthetized with 5% chloral hydrate and sacrificed in batches on the 2nd, 4th, or 6th day. Levels of Pb [including manganese (Mn) and copper (Cu)] in the urine, whole blood, and brain tissues were analyzed by graphite furnace atomic absorption spectrometry. The results showed that Pb exposure increased its levels in urine and blood, and PAS-Na treatment may afford antagonistic effect on Pb poisoning, suggesting that PAS-Na is a potentially effective treatment to promote excretion of Pb.
ISSN:0748-2337
1477-0393
DOI:10.1177/07482337231183208