Cited by 56Neuroinflammation and Neurodegeneration MechanismsNeurological Disease Mechanisms and TreatmentsAldose Reductase and Taurine

Protective effects of tauroursodeoxycholic acid on lipopolysaccharide-induced cognitive impairment and neurotoxicity in mice

Wu, Xian, Liu, Caihong, Chen, Liang, Du, Yi-Feng, Hu, Mei, Reed, Miranda N., Long, Yan, Suppiramaniam, Vishnu +2 more·2019·International Immunopharmacology

Abstract

Accumulating evidence has shown that tauroursodeoxycholic acid (TUDCA) is neuroprotective in different animal models of neurological diseases. However, whether TGR5 agonist TUDCA can improve lipopolysaccharide (LPS)-induced cognitive impairment in mice is less clear. Using a model of cognitive impairment with LPS (2.0 μg) we investigated the effects of TUDCA (200 or 400 μg) on cognitive dysfunction and neurotoxicity in mice. Both Morris water maze and Y-maze avoidance tests showed that TUDCA treatment significantly alleviated LPS-induced behavioral impairments. More importantly, we found that TUDCA treatment reversed TGR5 down-regulation, prevented neuroinflammation via inhibiting NF-κB signaling in the hippocampus of LPS-treated mice. Additionally, TUDCA treatment decreased LPS-induced apoptosis through decreasing TUNEL-positive cells and the overexpression of caspase-3, increasing the ratio of Bcl-2/Bax. TUDCA treatment also ameliorated synaptic plasticity impairments by increasing the ratio of mBDNF/proBDNF, the number of dendritic spines and the expression of synapse-associated proteins in the hippocampus. Our results indicated that TUDCA can improve cognitive impairment and neurotoxicity induced by LPS in mice, which is involved in TGR5-mediated NF-κB signaling.

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Crossref · 10.1016/j.intimp.2019.03.065

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Authors
Wu, X., Liu, C., Chen, L., Du, Y.-F., Hu, M., Reed, M. N., Long, Y., Suppiramaniam, V., Hong, H., & Tang, S.-S.
Affiliations
  • China Pharmaceutical University (CN)
  • Auburn University (US)
Corresponding author
Hong, Hao
Venue
International Immunopharmacology
Publisher
Elsevier BV
Published
2019-07
Volume
72
Pages
166-175
ISSN
1567-5769 (ISSN-L)
OpenAlex
W2935776201
Cited by
56
References
50
Citations by year
2026: 4 · 2025: 14 · 2024: 12 · 2023: 8 · 2022: 3 · 2021: 10 · 2020: 5
FWCI
1.98
Type
journal article
Language
en
Open access
closed
Locations
  • International Immunopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Fundamental Research Funds for the Central Universities (2632017PT01)
  • National Natural Science Foundation of China (81573413, 81603113, 81273497, 81773714)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Aldose Reductase and Taurine
Keywords
tauroursodeoxycholic acid, TGR5 agonists, lipopolysaccharide, neuroinflammation, cognitive impairment, neuroprotection, NF-κB signaling, hippocampus, apoptosis, caspase-3, Bcl-2/Bax ratio, synaptic plasticity, dendritic spines, neurotoxicity, behavioral impairment
MeSH terms
Animals, Hippocampus, Lipopolysaccharides, Neurons, Synapses, Taurochenodeoxycholic Acid, NF-kappa B, Apoptosis, Microglia, Neuroprotective Agents, Receptors, G-Protein-Coupled, Mice, Cognitive Dysfunction

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