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Ozdemir-Kumral ZN, Akgün T, Haşim C, Ulusoy E, Kalpakçıoğlu MK, Yüksel MF, Okumuş T, Us Z, Akakın D, Yüksel M, Gören Z, Yeğen BÇ. Intracerebroventricular administration of the exercise hormone irisin or acute strenuous exercise alleviates epileptic seizure-induced neuroinflammation and improves memory dysfunction in rats. BMC Neurosci 2024; 25:36. [PMID: 39103771 DOI: 10.1186/s12868-024-00884-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 07/24/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND Status epilepticus is a common and potentially life-threatening neurological emergency with a high risk for cognitive and neurobiological impairment. Our aim was to evaluate the neuroprotective effects of centrally administered irisin and acute exhausting exercise against oxidative brain injury and memory dysfunction due to a pentylenetetrazole (PTZ)-induced single seizure. Male Sprague Dawley rats with intracerebroventricular (icv) cannulas were randomly divided into intraperitoneally (ip) saline-injected control and PTZ-injected (45 mg/kg) seizure groups. Both the control and PTZ groups were then treated with irisin (7.5 µg/kg, 2 µl, icv), saline (2 µl, icv) or were forced to an acute bout of strenuous exercise before the ip injection of saline (control) or PTZ. Seizures were evaluated using the Racine score. To evaluate memory performance, a passive avoidance test was performed before and after PTZ injection. Following euthanasia at the 24th hour of seizure induction, brain tissues were removed for histopathological examination and for evaluating oxidative damage, antioxidant capacity, and neurotransmitter levels. RESULTS Glutamate/GABA imbalance observed in PTZ rats was corrected by irisin administration (p < 0.001/p < 0.01), while irisin prevented the generation of reactive oxygen species and lipid peroxidation (p < 0.05 - 0.001) and replenished the antioxidant catalase and glutathione levels (p < 0.01-0.01) in the cerebral tissue, and reduced the histologically evident neuronal injury due to a single seizure (p < 0.05 - 0.01). Irisin also delayed the onset of seizures (p < 0.05) and improved memory dysfunction (p < 0.05), but did not affect the severity of seizures. The acute exhaustive swimming exercise completed before PTZ-seizure depressed glutamate level (p < 0.001), maintained the oxidant/antioxidant balance, alleviated neuronal injury (p < 0.05 - 0.01) and upregulated cerebral BDNF expression (p < 0.05). CONCLUSION In conclusion, acute high-intensity exercise or exogenously administered irisin provides neuroprotection by maintaining the balance of excitatory/inhibitory neurotransmitters and oxidant/antioxidant systems.
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Affiliation(s)
- Zarife Nigâr Ozdemir-Kumral
- Department of Physiology, Marmara University School of Medicine, Basıbüyük Mah. Maltepe Basıbüyük Yolu No. 9/1, Istanbul, Maltepe, 34854, Türkiye
| | - Tuğçe Akgün
- Department of Physiology, Marmara University School of Medicine, Basıbüyük Mah. Maltepe Basıbüyük Yolu No. 9/1, Istanbul, Maltepe, 34854, Türkiye
| | - Ceren Haşim
- Student at Marmara University School of Medicine, İstanbul, Türkiye
| | - Ezgi Ulusoy
- Student at Marmara University School of Medicine, İstanbul, Türkiye
| | | | | | - Tunahan Okumuş
- Student at Marmara University School of Medicine, İstanbul, Türkiye
| | - Zeynep Us
- Department of Pharmacology, Marmara University School of Medicine, İstanbul, Türkiye
| | - Dilek Akakın
- Department of Histology and Embryology, Marmara University School of Medicine, İstanbul, Türkiye
| | - Meral Yüksel
- Department of Medical Laboratory, Marmara University Vocational School of Health Services, İstanbul, Türkiye
| | - Zafer Gören
- Department of Pharmacology, Marmara University School of Medicine, İstanbul, Türkiye
| | - Berrak Ç Yeğen
- Department of Physiology, Marmara University School of Medicine, Basıbüyük Mah. Maltepe Basıbüyük Yolu No. 9/1, Istanbul, Maltepe, 34854, Türkiye.
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Hu N, Chen X, Chen C, Liu X, Yi P, Xu T, Jia J, Feng J, Zhang C, Wang X. Exploring the role of esketamine in alleviating depressive symptoms in mice via the PGC-1α/irisin/ERK1/2 signaling pathway. Sci Rep 2023; 13:16611. [PMID: 37789092 PMCID: PMC10547795 DOI: 10.1038/s41598-023-43684-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023] Open
Abstract
Esketamine provides an immediate and noticeable antidepressant effect, although the underlying molecular processes are yet unclear. Irisin induced by aerobic exercise has been implicated in the alleviation of depressive symptoms, whether irisin expression responds to the administration of esketamine remains unknown. In this study, we found that irisin was reduced in the hippocampus and peripheral blood of chronic unpredictable mild stress (CUMS) mice, whereas the irisin level was rescued by esketamine treatment. The reduction of PGC-1α expression (transcriptional regulator of irisin gene expression) in the CUMS mice was rescued by esketamine treatment, PGC-1α knockdown significantly reduced the irisin level induced by esketamine. Additionally, FNDC5/irisin-knockout mice developed more severe depressant-like behaviors than wild-type mice under CUMS stimulation, with an attenuated the antidepressant effect of esketamine. Further research indicated that irisin-mediated modulation of esketamine on depressive-like behaviors in CUMS mice involved the ERK1/2 pathway. Overall, the PGC-1α/irisin/ERK1/2 signaling activation may be a new mechanism underlying the antidepressant activity of esketamine, denoting that irisin may be a promising therapeutic target for the treatment of depression.
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Affiliation(s)
- Na Hu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xuemei Chen
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Chengchuan Chen
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xing Liu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Peng Yi
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Tianhao Xu
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Jing Jia
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Jianguo Feng
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Chunxiang Zhang
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xiaobin Wang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China.
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan Province, China.
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3
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Lu Y, Bu FQ, Wang F, Liu L, Zhang S, Wang G, Hu XY. Recent advances on the molecular mechanisms of exercise-induced improvements of cognitive dysfunction. Transl Neurodegener 2023; 12:9. [PMID: 36850004 PMCID: PMC9972637 DOI: 10.1186/s40035-023-00341-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/09/2023] [Indexed: 03/01/2023] Open
Abstract
Physical exercise is of great significance for maintaining human health. Exercise can provide varying degrees of benefits to cognitive function at all stages of life cycle. Currently, with the aging of the world's population and increase of life expectancy, cognitive dysfunction has gradually become a disease of high incidence, which is accompanied by neurodegenerative diseases in elderly individuals. Patients often exhibit memory loss, aphasia and weakening of orientation once diagnosed, and are unable to have a normal life. Cognitive dysfunction largely affects the physical and mental health, reduces the quality of life, and causes a great economic burden to the society. At present, most of the interventions are aimed to maintain the current cognitive level and delay deterioration of cognition. In contrast, exercise as a nonpharmacological therapy has great advantages in its nontoxicity, low cost and universal application. The molecular mechanisms underlying the effect of exercise on cognition are complex, and studies have been extensively centered on neural plasticity, the direct target of exercise in the brain. In addition, mitochondrial stability and energy metabolism are essential for brain status. Meanwhile, the organ-brain axis responds to exercise and induces release of cytokines related to cognition. In this review, we summarize the latest evidence on the molecular mechanisms underlying the effects of exercise on cognition, and point out directions for future research.
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Affiliation(s)
- Yi Lu
- grid.13291.380000 0001 0807 1581West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Fa-Qian Bu
- grid.13291.380000 0001 0807 1581West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Fang Wang
- grid.13291.380000 0001 0807 1581West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Li Liu
- grid.13291.380000 0001 0807 1581West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Shuai Zhang
- grid.13291.380000 0001 0807 1581West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Guan Wang
- West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China.
| | - Xiu-Ying Hu
- West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Benarroch E. What Muscle Signals Mediate the Beneficial Effects of Exercise on Cognition? Neurology 2022; 99:298-304. [PMID: 35970575 DOI: 10.1212/wnl.0000000000201049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 06/08/2022] [Indexed: 11/15/2022] Open
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Promise of irisin to attenuate cognitive dysfunction in aging and Alzheimer's disease. Ageing Res Rev 2022; 78:101637. [PMID: 35504553 PMCID: PMC9844023 DOI: 10.1016/j.arr.2022.101637] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 01/19/2023]
Abstract
Strategies proficient for relieving cognitive impairments in aging and Alzheimer's disease (AD) have an enormous impact. Regular physical exercise (PE) can prevent age-related dementia and slow down AD progression. However, such a lifestyle change is likely not achievable for individuals displaying age-related frailty. Hence, drugs or biologics that could simulate the benefits of PE have received much attention. Previous studies suggested that the fibronectin-domain III containing 5 (FNDC5) underlies the PE-mediated improved cognitive function. A recent study reports that PE-related cognitive benefits in aging and AD are mediated by irisin, the cleaved form of FNDC5 released into the blood after PE. Such a conclusion was apparent from the deletion of irisin through a global knockout of FNDC5, leading to the loss of PE-induced cognitive benefits or inducing memory impairments in adult or aged models. Furthermore, in AD models, peripherally administered irisin mimicked the cognitive benefits of PE by modulating neuroinflammation. This short review discusses the promise of irisin to simulate the cognitive benefits of PE in age- and AD-related dementia. In addition, critical issues such as how blood-borne irisin acts on neural cells, the role of the brain-derived neurotrophic factor in irisin-mediated cognitive benefits, and irisin's ability to inhibit neuroinflammatory cascades in aging and AD are discussed.
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6
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Chen K, Wang K, Wang T. Protective effect of irisin against Alzheimer's disease. Front Psychiatry 2022; 13:967683. [PMID: 36203845 PMCID: PMC9530446 DOI: 10.3389/fpsyt.2022.967683] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Despite being one of the greatest global challenges for health and social care in the 21st century, Alzheimer's disease (AD) lacks specific medicine. Irisin, an exercise-generated muscle factor, emerges as a potential hormone for AD prevention and treatment because of its role in promoting the browning of white adipose tissue, accelerating energy expenditure, regulating energy metabolism, and improving insulin resistance. The study reviews classic hallmarks of AD and irisin's physiology before discussing the possible mechanism by which irisin protects against AD in terms of its effects related to molecular biology and cellular biology. Results reveal that irisin sharpens learning memory by inducing the production of brain-derived neurotrophic factor (BDNF), lowers the production of inflammatory factors, protects neurology through astrocytes, and ameliorates AD symptoms by improving insulin resistance. The review aims to facilitate future experimental studies and clinical applications of irisin in preventing and treating AD.
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Affiliation(s)
- Kang Chen
- Tianjin Key Lab of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China.,Institute of Environmental and Operational Medicine, Academy of Military Medicine Sciences, Academy of Military Sciences, Tianjin, China
| | - Kun Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medicine Sciences, Academy of Military Sciences, Tianjin, China
| | - Tianhui Wang
- Tianjin Key Lab of Exercise Physiology and Sports Medicine, Tianjin University of Sport, Tianjin, China.,Institute of Environmental and Operational Medicine, Academy of Military Medicine Sciences, Academy of Military Sciences, Tianjin, China
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7
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Cheng Y, Cui Y, Zhai Y, Xin W, Yu Y, Liang J, Li S, Sun H. Neuroprotective Effects of Exogenous Irisin in Kainic Acid-Induced Status Epilepticus. Front Cell Neurosci 2021; 15:738533. [PMID: 34658794 PMCID: PMC8517324 DOI: 10.3389/fncel.2021.738533] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/10/2021] [Indexed: 01/03/2023] Open
Abstract
Elevated reactive oxygen species (ROS) level is considered a crucial causative factor for neuronal damage in epilepsy. Irisin has been reported to ameliorate mitochondrial dysfunction and to reduce ROS levels; therefore, in this study, the effect of exogenous irisin on neuronal injury was evaluated in rats with kainic acid (KA)-induced status epilepticus (SE). Our results showed that exogenous irisin treatment significantly increased the expression of brain-derived neurotrophic factor (BDNF) and uncoupling protein 2 (UCP2), and reduced the levels of neuronal injury and mitochondrial oxidative stress. Additionally, an inhibitor of UCP2 (genipin) was administered to investigate the underlying mechanism of irisin-induced neuroprotection; in rats treated with genipin, the neuroprotective effects of irisin on KA-induced SE were found to be partially reversed. Our findings confirmed the neuroprotective effects of exogenous irisin and provide evidence that these effects may be mediated via the BDNF/UCP2 pathway, thus providing valuable insights that may aid the development of exogenous irisin treatment as a potential therapeutic strategy against neuronal injury in epilepsy.
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Affiliation(s)
- Yao Cheng
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Yaru Cui
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Yujie Zhai
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Wenyu Xin
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Yan Yu
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Jia Liang
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Shucui Li
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
| | - Hongliu Sun
- School of Pharmaceutical Sciences, Binzhou Medical University, Yantai, China
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8
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Cell Types Used for Cultured Meat Production and the Importance of Myokines. Foods 2021; 10:foods10102318. [PMID: 34681367 PMCID: PMC8534705 DOI: 10.3390/foods10102318] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/20/2021] [Accepted: 09/27/2021] [Indexed: 11/17/2022] Open
Abstract
The world’s population continues to increase, meaning we require more consistent protein supply to meet demand. Despite the availability of plant-based protein alternatives, animal meat remains a popular, high-quality protein source. Research studies have focused on cultured meat (meat grown in vitro) as a safe and more efficient alternative to traditional meat. Cultured meat is produced by in vitro myogenesis, which involves the processing of muscle satellite and mature muscle cells. Meat culture efficiency is largely determined by the culture conditions, such as the cell type and cell culture medium used and the biomolecular composition. Protein production can be enhanced by providing the optimum biochemical and physical conditions for skeletal muscle cell growth, while myoblasts play important roles in skeletal muscle formation and growth. This review describes the cell types used to produce cultured meat and the biological effects of various myokines and cytokines, such as interleukin-6, leukemia inhibitory factor, interleukin-4, interleukin-15, and interleukin-1β, on skeletal muscle and myogenesis and their potential roles in cultured meat production.
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9
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Huang Z, Zhang Y, Zhou R, Yang L, Pan H. Lactate as Potential Mediators for Exercise-Induced Positive Effects on Neuroplasticity and Cerebrovascular Plasticity. Front Physiol 2021; 12:656455. [PMID: 34290615 PMCID: PMC8287254 DOI: 10.3389/fphys.2021.656455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/09/2021] [Indexed: 01/22/2023] Open
Abstract
The accumulated evidence from animal and human studies supports that exercise is beneficial to physical health. Exercise can upregulate various neurotrophic factors, activate neuroplasticity, and play a positive role in improving and enhancing cerebrovascular function. Due to its economy, convenience, and ability to prevent or ameliorate various aging-related diseases, exercise, a healthy lifestyle, is increasingly popularized by people. However, the mechanism by which exercise performs this function and how it is transmitted from muscles to the brain remains incompletely understood. Here, we review the beneficial effects of exercise with different intensities on the brain with a focus on the positive effects of lactate on neuroplasticity and cerebrovascular plasticity. Based on these recent studies, we propose that lactate, a waste previously misunderstood as a by-product of glycolysis in the past, may be a key signal molecule that regulates the beneficial adaptation of the brain caused by exercise. Importantly, we speculate that a central protective mechanism may underlie the cognitive benefits induced by exercise.
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Affiliation(s)
- Zhihai Huang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Yulan Zhang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Ruixue Zhou
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Luodan Yang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Hongying Pan
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
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Kwak SE, Bae JH, Lee JH, Shin HE, Zhang D, Cho SC, Song W. Effects of exercise-induced beta-hydroxybutyrate on muscle function and cognitive function. Physiol Rep 2021; 9:e14497. [PMID: 33547753 PMCID: PMC7865404 DOI: 10.14814/phy2.14497] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/31/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022] Open
Abstract
Recent studies have shown that exercise improves skeletal muscle and cognitive function by stimulating the secretion of numerous molecules. In particular, previous studies have suggested that exercise-induced beta-hydroxybutyrate (BHB) release might improve skeletal muscle and cognitive function, but to date these studies have been limited to cell and animal models. Therefore, we aimed to determine how an exercise-induced increase in BHB affects skeletal muscle and cognitive function at a cellular level, in an animal model, and in humans. The effects of BHB on skeletal muscle and cognitive function were determined by treating C2C12 and C6 cell lines with BHB, and by measuring the skeletal muscle and serum BHB concentrations in aged mice after endurance or resistance exercise. In addition, serum BHB concentration was measured before and after high-speed band exercise in elderly people, and its relationships with muscle and cognitive function were analyzed. We found that BHB increased cell viability and brain-derived neurotrophic factor expression level in C6 cells, and endurance exercise, but not resistance exercise, increased the muscle BHB concentration in aged mice. Furthermore, the BHB concentration was positively related to skeletal muscle and cognitive function. Exercise did not increase the serum BHB concentration in the elderly people and BHB did not correlate with cognitive function, but after excluding the five people with the highest preexisting serum concentrations of BHB, the BHB concentrations of the remaining participants were increased by exercise, and the concentration showed a tendency toward a positive correlation with cognitive function. Thus, the BHB released by skeletal muscle following endurance exercise may improve muscle and cognitive function in animals and humans.
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Affiliation(s)
- Seong Eun Kwak
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
| | - Jun Hyun Bae
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
| | - Ji Heun Lee
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
| | - Hyung Eun Shin
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
| | - DiDi Zhang
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
| | | | - Wook Song
- Institute of Sport ScienceSeoul National UniversitySeoulKorea
- Institue on AgingSeoul National UniversitySeoulKorea
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Liu Y, Zhu C, Guo J, Chen Y, Meng C. The Neuroprotective Effect of Irisin in Ischemic Stroke. Front Aging Neurosci 2020; 12:588958. [PMID: 33414714 PMCID: PMC7782245 DOI: 10.3389/fnagi.2020.588958] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022] Open
Abstract
Irisin is a PGC-1α-dependent myokine that causes increased energy expenditure by driving the development of white adipose tissue into brown fat-like tissue. Exercise can improve irisin levels and lead to its release into the blood. In ischemic stroke, neurons are always sensitive to energy supply; after a series of pathophysiological processes, reactive oxygen species that are detrimental to cell survival via mitochondrial dysfunction are generated in large quantities. As a protein associated with exercise, irisin can alleviate brain injury in the pathogenesis of ischemic stroke. It is thought that irisin can upregulate the levels of brain-derived neurotrophic factor (BDNF), which protects nerve cells from injury during ischemic stroke. Furthermore, the release of irisin into the blood via exercise influences the mitochondrial dynamics crucial to maintaining the normal function of nerve cells. Consequently, we intended to summarize the known effects of irisin during ischemic stroke.
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Affiliation(s)
- Yaqiang Liu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chunhua Zhu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jiahui Guo
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yonghong Chen
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chaoyue Meng
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
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Abstract
The ongoing Coronavirus disease 2019 (COVID-19) outbreak in China has become the
world's leading health headline and is causing major panic and public concerns. After emerging in the
City of Wuhan, China, COVID-19 has spread to several countries becoming a worldwide pandemia.
Among the studies on COVID-19, it has been demonstrated that novel coronavirus pneumonia is closely
associated with inflammatory storms. Controlling the inflammatory response may be as important as
targeting the virus. Irisin is a muscle-contraction-induced immunomodulatory myokine related to physical
activity. Irisin drives the “browning” of white adipocytes, so enhancing metabolic uncoupling and
hence caloric expenditure. Irisin has been clearly shown to be a handyman molecule by exerting beneficial
effects on adipose tissues, pancreas, and bone through “cross-talk” between skeletal muscleadipocyte,
skeletal muscle-pancreas, and skeletal muscle-bone, respectively. Irisin has been proposed as
a promising strategy for early diagnosis and treatment of various types of cancers, neurological diseases
and inflammatory conditions. Irisin has been demonstrated to suppress the immune response, too. The
importance of irisin is demonstrated by the increase in the number of scientific papers and patents in
recent years. The identification of irisin receptor should greatly facilitate the understanding of irisin’s
function in exercise and human health. This review examines the structure and recent advances in activities
of irisin, suggesting it for further studies on the prevention and cure of COVID-19. Nowadays, studies
on irisin plasma levels and physical activity may be useful tools to further investigate the prevention
of COVID-19. Irisin may be suggested as a potential novel intervention for COVID-19 by mitigating
inflammatory storms, suppressing the immune response and simultaneously alleviating neurological disorders
such as depression and anxiety.
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Affiliation(s)
- Alessia Catalano
- Department of Pharmacy-Drug Sciences, University of Bari, 70126, Bari, Italy
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Bettio L, Thacker JS, Hutton C, Christie BR. Modulation of synaptic plasticity by exercise. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 147:295-322. [DOI: 10.1016/bs.irn.2019.07.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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