Federal University for Latin American Integration, Foz do Iguacu, Brazil.
Londrina State University, Health Sciences Graduate Program, Londrina, Brazil.
World J Biol Psychiatry. 2022 Jan;23(1):67-77. doi: 10.1080/15622975.2021.1925152. Epub 2021 Jun 18.
This study examined cognition-immune interactions, specifically executive function, working memory, peripheral levels of tumour necrosis factor-alpha (TNF-α), and soluble tumour necrosis factor receptors-1 and -2 (sTNFR1 and 2) levels in bipolar disorder (BD) patients in comparison with controls.
Thirty-one BD participants and twenty-seven controls participated in the study. The neurocognitive assessment was performed through three of CogState Research Battery tasks for executive function and working memory. Plasma levels of TNF-α, sTNFR1, and sTNFR2 were measured after overnight fasting. Sociodemographic data and symptom severity of depression and mania were assessed.
BD presented a significantly worse performance in the working memory task ( = .005) and higher levels of TNF-α ( = .043) in comparison to controls. A trend level of significance was found for sTNFR1 between groups ( = .082). Among BD participants, there were significant correlations between sTNFR2 and neurocognitive tasks (Groton Maze Learning Task: ρ = .54, = .002; Set-Shifting Task: ρ = .37, = .042; and the Two-Back Task: ρ = -.49, = .005), and between sTNFR1 and mania, depression and anxiety symptoms (respectively ρ = .37, = .038; ρ = -.38, = .037; and ρ = .42, = .002).
TNF-α and its receptors might be an important variable in cognitive impairment in BD. Future studies might focus on the development of anti-inflammatory therapeutic targets for cognitive dysfunction in BD.
本研究旨在探讨认知-免疫相互作用,特别是执行功能、工作记忆、肿瘤坏死因子-α(TNF-α)的外周水平以及可溶性肿瘤坏死因子受体-1 和 -2(sTNFR1 和 sTNFR2)在双相障碍(BD)患者中的水平,以与对照组进行比较。
31 名 BD 参与者和 27 名对照者参与了这项研究。通过 CogState Research Battery 的三项执行功能和工作记忆任务进行神经认知评估。空腹过夜后测量血浆 TNF-α、sTNFR1 和 sTNFR2 水平。评估社会人口统计学数据以及抑郁和躁狂的症状严重程度。
BD 在工作记忆任务中的表现明显较差( = .005),并且 TNF-α 水平较高( = .043),与对照组相比。组间 sTNFR1 存在趋势水平的显著性差异( = .082)。在 BD 参与者中,sTNFR2 与神经认知任务之间存在显著相关性(格罗顿迷宫学习任务:ρ = .54, = .002;转换任务:ρ = .37, = .042;以及二背任务:ρ = -.49, = .005),而 sTNFR1 与躁狂、抑郁和焦虑症状之间存在相关性(分别 ρ = .37, = .038;ρ = -.38, = .037;和 ρ = .42, = .002)。
TNF-α 及其受体可能是 BD 认知障碍的一个重要变量。未来的研究可能集中在开发针对 BD 认知功能障碍的抗炎治疗靶点上。