Metal ions in cerebrospinal fluid: Associations with anxiety, depression, and insomnia among cigarette smokers. (28th September 2022)

• Record Type: Journal Article
• Authors: Li, Yuying; Wu, Fenzan; Mu, Qingshuang; Xu, Kewei; Yang, Shizhuo; Wang, Ping; Wu, Yuyu; Wu, Junnan; Wang, Wei; Li, Hui; Chen, Li; Wang, Fan; Liu, Yanlong
• Is Part Of: CNS neuroscience & therapeutics. Volume 28:Number 12(2022)
• Page Start: 2141
• Page End: 2147
• Publication Date: 2022-09-28
• Subjects: anxiety -- cigarette smoking -- depression -- insomnia -- metal ions; Neuropharmacology -- Periodicals; Central nervous system -- Diseases -- Effect of drugs on -- Periodicals; 612.8
• DOI: 10.1111/cns.13955
• Languages: English
• ISSNs: 1755-5930

Abstract

Abstract: Objective: The study aimed to investigate the relationship between cerebrospinal fluid (CSF) metal ions and anxiety, depression, and insomnia among cigarette smokers. Methods: We measured CSF levels of various metal ions from 178 Chinese male subjects. Apart from sociodemographic and clinical characteristics data, the Fagerstrom Test for Nicotine Dependence (FTND), Beck Depression Inventory (BDI), Self‐Rating Anxiety Scale (SAS), and Pittsburgh Sleep Quality Index (PSQI) were applied. Results: BDI and PSQI scores (all p < 0.001) were significantly higher in active smokers than nonsmokers. Active smokers have significantly higher CSF levels of magnesium, zinc, iron, lead, lithium, and aluminum (all p ≤ 0.002). Some metal ions, including zinc, iron, lead, and aluminum, were found to have a significant correlation with BDI scores, whereas metal ions, including zinc and lead, were found to have a significant correlation with PSQI scores in the general group. More interesting, mediation analysis showed that aluminum mediated the relationship between smoking and depression. Conclusions: Cigarette smoking was indeed associated with depression and insomnia. Active smokers had significantly higher CSF levels of magnesium, zinc, iron, lead, lithium, and aluminum. Furthermore, CSF aluminum played a mediating role in the relationship between smoking and depression, which further confirmed its neurotoxicity. Abstract : (A) Total effect between smoking and Beck Depression Inventory scores. (B) Effect decomposition of the mediation model for the relationship between smoking and BDI scores association with CSF aluminum (Al) as a mediator.