Journal article
4 Weeks of HIIT Modulates Metabolic Homeostasis of Hippocampal Pyruvate-lactate Axis in CUMS Rats Improving Their Depression-like Behavior
Shēngwù huàxué yŭ shēngwù wùlĭ jìnzhán, Vol.52(6), pp.1468-1483
28/06/2025
Appears in Recent Faculty of Health Publications
Metrics
1 Record Views
Abstract
Objective: To investigate the role of 4-week high-intensity interval training (HIIT) in modulating the metabolic homeostasis of the pyruvate-lactate axis in the hippocampus of rats with chronic unpredictable mild stress (CUMS) to improve their depressive-like behavior.
Methods: Forty-eight SPF-grade 8-week-old male SD rats were randomly divided into 4 groups: the normal quiet group (C), the CUMS quiet group (M), the normal exercise group (HC), and the CUMS exercise group (HM). The M and HM groups received 8 weeks of CUMS modeling, while the HC and HM groups were exposed to 4 weeks of HIIT starting from the 5th week (3 min (85%-90%) Smax+1 min (50%-55%) Smax, 3-5 cycles, Smax is the maximum movement speed). A lactate analyzer was used to detect the blood lactate concentration in the quiet state of rats in the HC and HM groups at week 4 and in the 0, 2, 4, 8, 12, and 24 h after exercise, as well as in the quiet state of rats in each group at week 8. Behavioral indexes such as sucrose preference rate, number of times of uprightness and number of traversing frames in the absenteeism experiment, and other behavioral indexes were used to assess the depressive-like behavior of the rats at week 4 and week 8. The rats were anesthetized on the next day after the behavioral test in week 8, and hippocampal tissues were taken for assay. LC-MS non-targeted metabolomics, target quantification, ELISA and Western blot were used to detect the changes in metabolite content, lactate and pyruvate concentration, the content of key metabolic enzymes in the pyruvate-lactate axis, and the protein expression levels of monocarboxylate transporters (MCTs).
Results: 4-week HIIT intervention significantly increased the sucrose preference rate, the number of uprights and the number of traversed frames in the absent field experiment in CUMS rats; non-targeted metabolomics assay found that 21 metabolites were significantly changed in group M compared to group C, and 14 and 11 differential metabolites were significantly dialed back in the HC and HM groups, respectively, after the 4-week HIIT intervention; the quantitative results of the targeting showed that, compared to group C, lactate concentration in the hippocampal tissues of M group, compared with group C, lactate concentration in hippocampal tissue was significantly reduced and pyruvate concentration was significantly increased, and 4-week HIIT intervention significantly increased the concentration of lactate and pyruvate in hippocampal tissue of HM group; the trend of changes in blood lactate concentration was consistent with the change in lactate concentration in hippocampal tissue; compared with group C, the LDHB content of group M was significantly increased, the content of PKM2 and PDH, as well as the protein expression level of MCT2 and MCT4 were significantly reduced. The 4-week HIIT intervention upregulated the PKM2 and PDH content as well as the protein expression levels of MCT2 and MCT4 in the HM group.
Conclusion: The 4-week HIIT intervention upregulated blood lactate concentration and PKM2 and PDH metabolizing enzymes in hippocampal tissues of CUMS rats, and upregulated the expression of MCT2 and MCT4 transport carrier proteins to promote central lactate uptake and utilization, which regulated metabolic homeostasis of the pyruvate-lactate axis and improved depressive-like behaviors.
Details
- Title
- 4 Weeks of HIIT Modulates Metabolic Homeostasis of Hippocampal Pyruvate-lactate Axis in CUMS Rats Improving Their Depression-like Behavior
- Creators
- Yu-Mei Han - Shanxi UniversityChun-Hui Bao - Shanxi UniversityZi-Wei Zhang - Shanxi UniversityJia-Ren Liang - Shanxi UniversityHuan Xiang - Shanxi UniversityJun-Sheng Tian - Shanxi UniversityShi Zhou - Southern Cross UniversityShuang-Shuang Wu - SISSCT
- Publication Details
- Shēngwù huàxué yŭ shēngwù wùlĭ jìnzhán, Vol.52(6), pp.1468-1483
- Publisher
- Chinese Academy of Sciences
- Number of pages
- 16
- Grant note
- This work was supported by grants from The National Natural Science Foundation of China (82374153), the Shanxi Province Basic Research Program (202103021224027), and 2023 Graduate Student Research and Innovation Program in Shanxi Province (2023KY078).
- Identifiers
- 991013296652102368
- Academic Unit
- Human Sciences; Faculty of Health
- Language
- Chinese
- Resource Type
- Journal article