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- Title
Sodium Para-aminosalicylic Acid Reverses Changes of Glutamate Turnover in Manganese-Exposed Rats.
- Authors
Li, Zhao-Cong; Wang, Fang; Li, Shao-Jun; Zhao, Lin; Li, Jun-Yan; Deng, Yue; Zhu, Xiao-Juan; Zhang, Yu-Wen; Peng, Dong-Jie; Jiang, Yue-Ming
- Abstract
Sodium para-aminosalicylic acid (PAS-Na) has been used to treat patients with manganism, a neurological disease caused by manganese (Mn) toxicity, although the exact molecular mechanisms are yet unclear. The present study aims to investigate the effect of PAS-Na on glutamate (Glu) turnover of Mn-exposed rats. The results showed that Mn concentrations in the hippocampus, thalamus, striatum, and globus pallidus were increased in Mn-exposed rats. Moreover, the results also demonstrated that subacute Mn exposure (15 mg/kg for 4 weeks) interrupted the homeostasis of Glu by increasing Glu levels but decreasing glutamine (Gln) levels in the hippocampus, thalamus, striatum, and globus pallidus in male Sprague-Dawley rats. These effects lasted even after Mn exposure had been ceased for a period of 6 weeks. Meanwhile the main Glu turnover enzymes [Gln synthetase (GS) and phosphate-activated glutaminase (PAG)] and transporters [Glu/aspartate transporter (GLAST) and Glu transporter-1 (GLT-1)] were also affected by Mn treatment. Additionally, PAS-Na treatment recovered the aforementioned changes induced by Mn. Taken together, these results indicate that Glu turnover might be involved in Mn-induced neurotoxicity. PAS-Na treatment could promote Mn excretions and recover the changes in Glu turnover induced by Mn, and a prolonged PAS-Na treatment may be more effective.
- Subjects
MANGANESE chlorides; GLUTAMIC acid; GLOBUS pallidus; RATS; GLUTAMINE; SODIUM; NEUROLOGICAL disorders
- Publication
Biological Trace Element Research, 2020, Vol 197, Issue 2, p544
- ISSN
0163-4984
- Publication type
Article
- DOI
10.1007/s12011-019-02001-0