Formononetin improves cognitive behavior in aging rats with chronic unpredictable mild in hippocampal tissue stress by blocking the NF-κB pathway and inhibiting the release of inflammatory factors.
- Author:
Chunhua ZHANG
1
;
Lingyun HU
2
;
Yun XIE
2
;
Jing WEN
2
;
Yadi CHEN
2
Author Information
1. Department of encephalopathy, Zhenjiang Hospital of Traditional Chinese Medicine, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Zhenjiang 212000, China. *Corresponding author, E-mail: zhangch19750218@163.com.
2. Department of encephalopathy, Zhenjiang Hospital of Traditional Chinese Medicine, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Zhenjiang 212000, China.
- Publication Type:Journal Article
- MeSH:
Rats;
Animals;
Horses;
NF-kappa B/metabolism*;
Signal Transduction;
bcl-2-Associated X Protein/metabolism*;
Toll-Like Receptor 4/metabolism*;
Caspase 3/metabolism*;
Caspase 9/metabolism*;
Interleukin-6/metabolism*;
Tumor Necrosis Factor-alpha/metabolism*;
Myeloid Differentiation Factor 88;
Hydroxyindoleacetic Acid/pharmacology*;
Serotonin/metabolism*;
Rats, Sprague-Dawley;
Hippocampus/metabolism*;
Cognition
- From:
Chinese Journal of Cellular and Molecular Immunology
2023;39(7):610-616
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of formononetin (FMN) on cognitive behavior and inflammation in aging rats with chronic unpredictable mild stress (CUMS). Methods SD rats aged about 70 weeks were divided into healthy control group, CUMS model group, CUMS combined with 10 mg/kg FMN group, CUMS combined with 20 mg/kg FMN group and CUMS combined with 1.8 mg/kg fluoxetine hydrochloride (Flu) group. Except for healthy control group, other groups were stimulated with CUMS and administered drugs for 28 days. Sugar water preference, forced swimming experiment and open field experiment were used to observe the emotional behavior of rats in each group. HE staining was used to observe the pathological injury degree of brain equine area. The contents of 5-hydroxytryptamine (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) were detected by the kit. The apoptosis was tested by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) in the brain tissue. The levels of tumor necrosis factor α (TNF-α), inducible nitric oxide synthase (iNOS) and interleukin 6 (IL-6) in peripheral blood were measured by ELISA. Western blot analysis was used to detect Bcl2, Bcl2 associated X protein (BAX), cleaved caspase-9, cleaved caspase-3, Toll-like receptor 4 (TLR4), myeloid differentiation factor 88 (MyD88), and phosphorylated nuclear factor κB p65 (p-NF-κB p65) in brain tissues. Results Compared with CUMS model group, sugar water consumption, open field activity time, open field travel distance and swimming activity time significantly increased in the CUMS combined with 20 mg/kg FMN group and the CUMS combined with 1.8 mg/kg Flu group. The number of new outarm entry increased significantly, while the number of initial arm entry and other arm entry decreased significantly. The pathological damage of brain equine area was alleviated, and the contents of 5-HT and 5-HIAA were significantly increased. The ratio of BAX/Bcl2 and the expression of cleaved caspase-9 and cleaved caspase-3 protein as well as the number of apoptotic cells were significantly decreased. The contents of TNF-α, iNOS and IL-6 were significantly decreased. The protein levels of TLR4, MyD88 and p-NF-κB p65 were significantly decreased. Conclusion FMN can inhibit the release of inflammatory factors by blocking NF-κB pathway and improve cognitive and behavioral ability of CUMS aged rats.
