Abstract
Lead causes a broad range of adverse effects in humans and animals. The objective was to evaluate the potency of lactobacilli to bind lead in vitro and the protective effects of a selected Lactobacillus plantarum CCFM8661 against lead-induced toxicity in mice. Nine strains of bacteria were used to investigate their binding abilities of lead in vitro, and L. plantarum CCFM8661 was selected for animal experiments because of its excellent lead binding capacity. Both living and dead L. plantarum CCFM8661 were used to treat 90 male Kunming mice during or after the exposure to 1 g/L lead acetate in drinking water. The results showed oral administration of both living and dead L. plantarum CCFM8661 offered a significant protective effect against lead toxicity by recovering blood δ-aminolevulinic acid dehydratase activity, decreasing the lead levels in blood and tissues, and preventing alterations in the levels of glutathione, glutathione peroxidase, malondialdehyde, superoxide dismutase, and reactive oxygen species caused by lead exposure. Moreover, L. plantarum CCFM8661 was more effective when administered consistently during the entire lead exposure, not after the exposure. Our results suggest that L. plantarum CCFM8661 has the potency to provide a dietary strategy against lead toxicity.
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Acknowledgments
This work was supported by the National Science Fund for Distinguished Young Scholars (no. 31125021), the National High Technology Research and Development Program of China (no. 2011AA100901,2011AA100902), National Natural Science Foundation of China (no. 20836003), the National Basic Research Program of China 973 Program (no. 2012CB720802), the National Science and Technology Pillar Program (no. 2010C0070311), the 111 project B07029, Fundamental Research Funds for the Central Universities (JUSRP111A31 and JUSRP31103), and SKLF-MB-200802.
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Fengwei Tian and Qixiao Zhai made equal contributions to this work.
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Tian, F., Zhai, Q., Zhao, J. et al. Lactobacillus plantarum CCFM8661 Alleviates Lead Toxicity in Mice. Biol Trace Elem Res 150, 264–271 (2012). https://doi.org/10.1007/s12011-012-9462-1
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DOI: https://doi.org/10.1007/s12011-012-9462-1