蜂胶通过调节肠道黏膜屏障功能和炎症反应改善 C57BL/6J 小鼠的酒精诱导的抑郁症状。
Propolis Ameliorates Alcohol-Induced Depressive Symptoms in C57BL/6J Mice by Regulating Intestinal Mucosal Barrier Function and Inflammatory Reaction.
机构信息
The Institute of Human Nutrition, Qingdao University, Ning Xia Road 308, Qingdao 266071, China.
Department of Biochemistry and Molecular Biology, Basic Medical College, Qingdao University of Medicine, Ningxia Road 308, Qingdao 266071, China.
出版信息
Nutrients. 2022 Mar 12;14(6):1213. doi: 10.3390/nu14061213.
Accumulating evidence points to a critical role of the brain gut axis as an important paradigm for many central nervous system diseases. Recent studies suggest that propolis has obvious neuroprotective properties and functionality in regulating intestinal bacteria flora, hinting at a potential key effect at both terminals of this axis regulation. However, currently no clear evidence confirms the effects of propolis on alcohol-induced depression. Here, we establish an alcoholic depression model with C57BL/6J mice and demonstrate that treatment with propolis protects against alcohol-induced depressive symptoms by behavioral tests. In addition, propolis attenuates the injury of nerve cells in the hippocampal region and restores the serum levels of brain-derived neurotrophic factor (BDNF) and dopamine (DA) in mice with alcohol-induced depression. Pathology and biotin tracer assays show that propolis repairs the intestinal leakage caused by alcohol. Additionally, propolis treatment increases the expression levels of intestinal intercellular tight junctions' (TJs') structural proteins Claudin-1, Occludin and zona occludens-1 (ZO-1), as well as the activation state of the liver kinase B1/AMP-activated protein kinase (LKB1/AMPK) signaling pathway, which is closely related to the intestinal permeability. Furthermore, propolis can reduce the levels of pro-inflammatory, lipopolysaccharide (LPS) and fatty-acid-binding protein 2 (FABP2), suggesting the significance of the inflammatory response in alcoholic depression. Collectively, our findings indicate that propolis exerted an improving effect on alcohol-induced depressive symptoms by ameliorating brain gut dysfunction.
越来越多的证据表明,脑肠轴作为许多中枢神经系统疾病的重要范式起着关键作用。最近的研究表明,蜂胶具有明显的神经保护特性和调节肠道细菌群落的功能,这暗示了它在该调节轴两端可能具有关键作用。然而,目前尚无明确证据证实蜂胶对酒精性抑郁症的影响。在这里,我们用 C57BL/6J 小鼠建立了酒精性抑郁症模型,并通过行为测试表明,蜂胶治疗可预防酒精引起的抑郁症状。此外,蜂胶可减轻酒精诱导的抑郁小鼠海马区神经细胞损伤,并恢复血清中脑源性神经营养因子(BDNF)和多巴胺(DA)的水平。病理学和生物素示踪剂检测表明,蜂胶可修复酒精引起的肠道渗漏。此外,蜂胶治疗可增加肠道细胞间紧密连接(TJs)结构蛋白 Claudin-1、Occludin 和 zona occludens-1(ZO-1)的表达水平,以及与肠道通透性密切相关的肝激酶 B1/AMP 激活蛋白激酶(LKB1/AMPK)信号通路的激活状态。此外,蜂胶还可以降低促炎因子脂多糖(LPS)和脂肪酸结合蛋白 2(FABP2)的水平,表明在酒精性抑郁症中炎症反应的重要性。总之,我们的研究结果表明,蜂胶通过改善脑肠功能障碍对酒精引起的抑郁症状发挥了改善作用。