5-Hydroxytryptophan, a Precursor for Serotonin Synthesis, Alleviated Cognitive Dysfunction in a Mouse Model of Sepsis-Associated Encephalopathy
Abstract
1. Introduction
2. Materials and Methods
2.1. Animals
2.2. Drugs
2.3. Experimental Design and Drug Administration
2.4. Behavioral Tests
2.4.1. Open-Field Test
2.4.2. Barnes Maze
2.4.3. New Object Recognition Test
2.5. Statistical Analyses
3. Results
3.1. 5-HTP Improved Cognitive Dysfunction of LPS-Induced Septic Mice
3.2. Effects of 5-HTP and WAY100635 on Cognitive and Motor Functions in Healthy Mice
3.3. Cognition-Enhancing Effect of 5-HTP Was Blocked by WAY100635
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
SAE | Sepsis-associated encephalopathy |
LPS | Lipopolysaccharide |
5-HTP | 5-hydroxytryptophan |
NORT | Linear dichroism |
BM | Barnes maze |
NORT | New object recognition test |
OFT | Open-field test |
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Figure | Group | Type of Behavior Test | Sample Size of Group | Survival During Behavior Tests |
---|---|---|---|---|
Figure 2 | Control | BM + NORT + OFT | 8 | All survived |
LPS | BM + NORT + OFT | 8 | All survived | |
LPS + 5-HTP 10 mg/kg | BM + NORT + OFT | 7 | All survived | |
LPS + 5-HTP 25 mg/kg | BM + NORT + OFT | 8 | Day 5 of BM:1 death | |
LPS + 5-HTP 100 mg/kg | Learning phase of BM Probe trial of BM | 6 3 | Day 2, 3, 5 of BM:1 death per day Day 6 of BM:2 death | |
Figure 3 and Figure 4 | Control | BM + NORT + OFT | 8 | All survived |
Control + WAY100635 1 mg/kg | BM + NORT + OFT | 8 | All survived | |
Control + 5-HTP 10 mg/kg | BM + NORT + OFT | 9 | All survived | |
LPS | BM + NORT + OFT | 10 | All survived | |
LPS + 5-HTP 10 mg/kg | BM + NORT + OFT | 9 | All survived | |
LPS + 5-HTP + WAY100635 | BM + NORT + OFT | 10 | All survived |
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Zhang, C.; Jiang, J.; Zhang, Y.; Tan, Z. 5-Hydroxytryptophan, a Precursor for Serotonin Synthesis, Alleviated Cognitive Dysfunction in a Mouse Model of Sepsis-Associated Encephalopathy. Biomedicines 2025, 13, 2319. https://doi.org/10.3390/biomedicines13102319
Zhang C, Jiang J, Zhang Y, Tan Z. 5-Hydroxytryptophan, a Precursor for Serotonin Synthesis, Alleviated Cognitive Dysfunction in a Mouse Model of Sepsis-Associated Encephalopathy. Biomedicines. 2025; 13(10):2319. https://doi.org/10.3390/biomedicines13102319
Chicago/Turabian StyleZhang, Chen, Jianing Jiang, Yiran Zhang, and Zheren Tan. 2025. "5-Hydroxytryptophan, a Precursor for Serotonin Synthesis, Alleviated Cognitive Dysfunction in a Mouse Model of Sepsis-Associated Encephalopathy" Biomedicines 13, no. 10: 2319. https://doi.org/10.3390/biomedicines13102319
APA StyleZhang, C., Jiang, J., Zhang, Y., & Tan, Z. (2025). 5-Hydroxytryptophan, a Precursor for Serotonin Synthesis, Alleviated Cognitive Dysfunction in a Mouse Model of Sepsis-Associated Encephalopathy. Biomedicines, 13(10), 2319. https://doi.org/10.3390/biomedicines13102319