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Wang S, Liu A, Xu C, Hou J, Hong J. GLP-1(7-36) protected against oxidative damage and neuronal apoptosis in the hippocampal CA region after traumatic brain injury by regulating ERK5/CREB. Mol Biol Rep 2024; 51:313. [PMID: 38374452 PMCID: PMC10876747 DOI: 10.1007/s11033-024-09244-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/11/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Glucagon-like peptide-1 (GLP-1) (7-36) amide, an endogenous active form of GLP-1, has been shown to modulate oxidative stress and neuronal cell survival in various neurological diseases. OBJECTIVE This study investigated the potential effects of GLP-1(7-36) on oxidative stress and apoptosis in neuronal cells following traumatic brain injury (TBI) and explored the underlying mechanisms. METHODS Traumatic brain injury (TBI) models were established in male SD rats for in vivo experiments. The extent of cerebral oedema was assessed using wet-to-dry weight ratios following GLP-1(7-36) intervention. Neurological dysfunction and cognitive impairment were evaluated through behavioural experiments. Histopathological changes in the brain were observed using haematoxylin and eosin staining. Oxidative stress levels in hippocampal tissues were measured. TUNEL staining and Western blotting were employed to examine cell apoptosis. In vitro experiments evaluated the extent of oxidative stress and neural apoptosis following ERK5 phosphorylation activation. Immunofluorescence colocalization of p-ERK5 and NeuN was analysed using immunofluorescence cytochemistry. RESULTS Rats with TBI exhibited neurological deterioration, increased oxidative stress, and enhanced apoptosis, which were ameliorated by GLP-1(7-36) treatment. Notably, GLP-1(7-36) induced ERK5 phosphorylation in TBI rats. However, upon ERK5 inhibition, oxidative stress and neuronal apoptosis levels were elevated, even in the presence of GLP-1(7-36). CONCLUSION In summary, this study suggested that GLP-1(7-36) suppressed oxidative damage and neuronal apoptosis after TBI by activating ERK5/CREB.
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Affiliation(s)
- Shuwei Wang
- Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China
| | - Aijun Liu
- Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China
| | - Chaopeng Xu
- Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China
| | - Jingxuan Hou
- Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China
| | - Jun Hong
- Department of Neurosurgery, Tangshan Gongren Hospital, Tangshan, 063000, Hebei, China.
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2
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Jia P, Wang J, Ren X, He J, Wang S, Xing Y, Chen D, Zhang X, Zhou S, Liu X, Yu S, Li Z, Jiang C, Zang W, Chen X, Wang J. An enriched environment improves long-term functional outcomes in mice after intracerebral hemorrhage by mechanisms that involve the Nrf2/BDNF/glutaminase pathway. J Cereb Blood Flow Metab 2023; 43:694-711. [PMID: 36635875 PMCID: PMC10108193 DOI: 10.1177/0271678x221135419] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 01/14/2023]
Abstract
Post-stroke depression exacerbates neurologic deficits and quality of life. Depression after ischemic stroke is known to some extent. However, depression after intracerebral hemorrhage (ICH) is relatively unknown. Increasing evidence shows that exposure to an enriched environment (EE) after cerebral ischemia/reperfusion injury has neuroprotective effects in animal models, but its impact after ICH is unknown. In this study, we investigated the effect of EE on long-term functional outcomes in mice subjected to collagenase-induced striatal ICH. Mice were subjected to ICH with the standard environment (SE) or ICH with EE for 6 h/day (8:00 am-2:00 pm). Depressive, anxiety-like behaviors and cognitive tests were evaluated on day 28 with the sucrose preference test, tail suspension test, forced swim test, light-dark transition experiment, morris water maze, and novel object recognition test. Exposure to EE improved neurologic function, attenuated depressive and anxiety-like behaviors, and promoted spatial learning and memory. These changes were associated with increased expression of transcription factor Nrf2 and brain-derived neurotrophic factor (BDNF) and inhibited glutaminase activity in the perihematomal tissue. However, EE did not change the above behavioral outcomes in Nrf2-/- mice on day 28. Furthermore, exposure to EE did not increase BDNF expression compared to exposure to SE in Nrf2-/- mice on day 28 after ICH. These findings indicate that EE improves long-term outcomes in sensorimotor, emotional, and cognitive behavior after ICH and that the underlying mechanism involves the Nrf2/BDNF/glutaminase pathway.
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Affiliation(s)
- Peijun Jia
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
- School of Life Sciences,
Zhengzhou University, Zhengzhou, China
| | - Junmin Wang
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Xiuhua Ren
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Jinxin He
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Shaoshuai Wang
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Yinpei Xing
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Danyang Chen
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Xinling Zhang
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Siqi Zhou
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Xi Liu
- Department of Neurology,
The First Affiliated Hospital of Zhengzhou University, Zhengzhou,
China
| | - Shangchen Yu
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Zefu Li
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Chao Jiang
- Department of Neurology,
The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou,
China
| | - Weidong Zang
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Xuemei Chen
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
| | - Jian Wang
- Department of Anatomy,
School of Basic Medical Sciences, , Zhengzhou
University, Zhengzhou, China
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3
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Hung SY, Chung HY, Luo ST, Chu YT, Chen YH, MacDonald IJ, Chien SY, Kotha P, Yang LY, Hwang LL, Dun NJ, Chuang DM, Chen YH. Electroacupuncture improves TBI dysfunction by targeting HDAC overexpression and BDNF-associated Akt/GSK-3β signaling. Front Cell Neurosci 2022; 16:880267. [PMID: 36016833 PMCID: PMC9396337 DOI: 10.3389/fncel.2022.880267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/27/2022] [Indexed: 11/18/2022] Open
Abstract
Background Acupuncture or electroacupuncture (EA) appears to be a potential treatment in acute clinical traumatic brain injury (TBI); however, it remains uncertain whether acupuncture affects post-TBI histone deacetylase (HDAC) expression or impacts other biochemical/neurobiological events. Materials and methods We used behavioral testing, Western blot, and immunohistochemistry analysis to evaluate the cellular and molecular effects of EA at LI4 and LI11 in both weight drop-impact acceleration (WD)- and controlled cortical impact (CCI)-induced TBI models. Results Both WD- and CCI-induced TBI caused behavioral dysfunction, increased cortical levels of HDAC1 and HDAC3 isoforms, activated microglia and astrocytes, and decreased cortical levels of BDNF as well as its downstream mediators phosphorylated-Akt and phosphorylated-GSK-3β. Application of EA reversed motor, sensorimotor, and learning/memory deficits. EA also restored overexpression of HDAC1 and HDAC3, and recovered downregulation of BDNF-associated signaling in the cortex of TBI mice. Conclusion The results strongly suggest that acupuncture has multiple benefits against TBI-associated adverse behavioral and biochemical effects and that the underlying mechanisms are likely mediated by targeting HDAC overexpression and aberrant BDNF-associated Akt/GSK-3 signaling.
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Affiliation(s)
- Shih-Ya Hung
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
- Division of Colorectal Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Hsin-Yi Chung
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Sih-Ting Luo
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Yu-Ting Chu
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Yu-Hsin Chen
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Iona J. MacDonald
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Szu-Yu Chien
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Peddanna Kotha
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Liang-Yo Yang
- Department of Physiology, School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
- Laboratory for Neural Repair, China Medical University Hospital, Taichung, Taiwan
| | - Ling-Ling Hwang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Nae J. Dun
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, United States
| | - De-Maw Chuang
- Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States
| | - Yi-Hung Chen
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
- Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
- Department of Photonics and Communication Engineering, Asia University, Taichung, Taiwan
- *Correspondence: Yi-Hung Chen,
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Huang Y, Zhao M, Chen X, Zhang R, Le A, Hong M, Zhang Y, Jia L, Zang W, Jiang C, Wang J, Fan X, Wang J. Tryptophan Metabolism in Central Nervous System Diseases: Pathophysiology and Potential Therapeutic Strategies. Aging Dis 2022; 14:858-878. [PMID: 37191427 DOI: 10.14336/ad.2022.0916] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 09/16/2022] [Indexed: 11/19/2022] Open
Abstract
The metabolism of L-tryptophan (TRP) regulates homeostasis, immunity, and neuronal function. Altered TRP metabolism has been implicated in the pathophysiology of various diseases of the central nervous system. TRP is metabolized through two main pathways, the kynurenine pathway and the methoxyindole pathway. First, TRP is metabolized to kynurenine, then kynurenic acid, quinolinic acid, anthranilic acid, 3-hydroxykynurenine, and finally 3-hydroxyanthranilic acid along the kynurenine pathway. Second, TRP is metabolized to serotonin and melatonin along the methoxyindole pathway. In this review, we summarize the biological properties of key metabolites and their pathogenic functions in 12 disorders of the central nervous system: schizophrenia, bipolar disorder, major depressive disorder, spinal cord injury, traumatic brain injury, ischemic stroke, intracerebral hemorrhage, multiple sclerosis, Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease. Furthermore, we summarize preclinical and clinical studies, mainly since 2015, that investigated the metabolic pathway of TRP, focusing on changes in biomarkers of these neurologic disorders, their pathogenic implications, and potential therapeutic strategies targeting this metabolic pathway. This critical, comprehensive, and up-to-date review helps identify promising directions for future preclinical, clinical, and translational research on neuropsychiatric disorders.
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