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Dell’Angelica D, Singh K, Colwell CS, Ghiani CA. Circadian Interventions in Preclinical Models of Huntington's Disease: A Narrative Review. Biomedicines 2024; 12:1777. [PMID: 39200241 PMCID: PMC11351982 DOI: 10.3390/biomedicines12081777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 07/25/2024] [Accepted: 07/25/2024] [Indexed: 09/02/2024] Open
Abstract
Huntington's Disease (HD) is a neurodegenerative disorder caused by an autosomal-dominant mutation in the huntingtin gene, which manifests with a triad of motor, cognitive and psychiatric declines. Individuals with HD often present with disturbed sleep/wake cycles, but it is still debated whether altered circadian rhythms are intrinsic to its aetiopathology or a consequence. Conversely, it is well established that sleep/wake disturbances, perhaps acting in concert with other pathophysiological mechanisms, worsen the impact of the disease on cognitive and motor functions and are a burden to the patients and their caretakers. Currently, there is no cure to stop the progression of HD, however, preclinical research is providing cementing evidence that restoring the fluctuation of the circadian rhythms can assist in delaying the onset and slowing progression of HD. Here we highlight the application of circadian-based interventions in preclinical models and provide insights into their potential translation in clinical practice. Interventions aimed at improving sleep/wake cycles' synchronization have shown to improve motor and cognitive deficits in HD models. Therefore, a strong support for their suitability to ameliorate HD symptoms in humans emerges from the literature, albeit with gaps in our knowledge on the underlying mechanisms and possible risks associated with their implementation.
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Affiliation(s)
- Derek Dell’Angelica
- Department of Psychiatry and Biobehavioural Sciences, Semel Institute for Neuroscience and Human Behaviour, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA; (D.D.); (K.S.); (C.S.C.)
| | - Karan Singh
- Department of Psychiatry and Biobehavioural Sciences, Semel Institute for Neuroscience and Human Behaviour, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA; (D.D.); (K.S.); (C.S.C.)
| | - Christopher S. Colwell
- Department of Psychiatry and Biobehavioural Sciences, Semel Institute for Neuroscience and Human Behaviour, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA; (D.D.); (K.S.); (C.S.C.)
| | - Cristina A. Ghiani
- Department of Psychiatry and Biobehavioural Sciences, Semel Institute for Neuroscience and Human Behaviour, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA; (D.D.); (K.S.); (C.S.C.)
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90024, USA
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2
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Fan S, Kong C, Zhou R, Zheng X, Ren D, Yin Z. Protein Post-Translational Modifications Based on Proteomics: A Potential Regulatory Role in Animal Science. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6077-6088. [PMID: 38501450 DOI: 10.1021/acs.jafc.3c08332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Genomic studies in animal breeding have provided a wide range of references; however, it is important to note that genes and mRNA alone do not fully capture the complexity of living organisms. Protein post-translational modification, which involves covalent modifications regulated by genetic and environmental factors, serves as a fundamental epigenetic mechanism that modulates protein structure, activity, and function. In this review, we comprehensively summarize various phosphorylation and acylation modifications on metabolic enzymes relevant to energy metabolism in animals, including acetylation, succinylation, crotonylation, β-hydroxybutylation, acetoacetylation, and lactylation. It is worth noting that research on animal energy metabolism and modification regulation lags behind the demands for growth and development in animal breeding compared to human studies. Therefore, this review provides a novel research perspective by exploring unreported types of modifications in livestock based on relevant findings from human or animal models.
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Affiliation(s)
- Shuhao Fan
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Chengcheng Kong
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230013, China
| | - Ren Zhou
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Xianrui Zheng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Dalong Ren
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Zongjun Yin
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
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3
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Giuliani G, Longo VD. Ketone bodies in cell physiology and cancer. Am J Physiol Cell Physiol 2024; 326:C948-C963. [PMID: 38189128 DOI: 10.1152/ajpcell.00441.2023] [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: 09/12/2023] [Revised: 01/03/2024] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
Ketogenic diets (KDs), fasting, or prolonged physical activity elevate serum ketone bodies (KBs) levels, providing an alternative fuel source for the brain and other organs. However, KBs play pleiotropic roles that go beyond their role in energy production. KBs can act as signaling metabolites, influence gene expression, proteins' posttranslational modifications (PTMs), inflammation, and oxidative stress. Here, we explore the impact of KBs on mammalian cell physiology, including aging and tissue regeneration. We also concentrate on KBs and cancer, given the extensive evidence that dietary approaches inducing ketosis, including fasting-mimicking diets (FMDs) and KDs, can prevent cancer and affect tumor progression.
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Affiliation(s)
- Giacomo Giuliani
- Longevity Institute and Davis School of Gerontology, University of Southern California, Los Angeles, California, United States
| | - Valter D Longo
- Longevity Institute and Davis School of Gerontology, University of Southern California, Los Angeles, California, United States
- IFOM, FIRC Institute of Molecular Oncology, Milan, Italy
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4
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Al-Naqeb G, Kalmpourtzidou A, De Giuseppe R, Cena H. Beneficial Effects of Plant Oils Supplementation on Multiple Sclerosis: A Comprehensive Review of Clinical and Experimental Studies. Nutrients 2023; 15:4827. [PMID: 38004221 PMCID: PMC10674509 DOI: 10.3390/nu15224827] [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: 10/23/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Multiple sclerosis disease (MS) is a 38.5 chronic neurological autoimmune disease that affects the nervous system, and its incidence is increasing globally. At present, there is no cure for this disease, and with its severity and disabling variety, it is important to search for possibilities that could help to slow its progression. It is recognized that the mechanisms of MS pathology, its development and degree of activity can be affected by dietary factors. In this review, the beneficial health effects of 10 plants oils-mainly seed oils, including pomegranate seed oil, sesame oil, acer truncatum bunge seed oil, hemp seeds oil, evening primrose seed oil, coconut oil, walnut oil, essential oil from Pterodon emarginatus seeds, flaxseed oil and olive oil-on MS are discussed. The literature data indicate that plant oils could be effective for the treatment of MS and its related symptoms primarily through reducing inflammation, promoting remyelination, immunomodulation and inhibiting oxidative stress. Plant oils may potentially reduce MS progression. Longitudinal research including a larger sample size with a longer duration is essential to confirm the findings from the selected plant oils. Moreover, new plant oils should be studied for their potential MS benefit.
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Affiliation(s)
- Ghanya Al-Naqeb
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (A.K.); (R.D.G.); (H.C.)
- Department of Food Sciences and Nutrition, Faculty of Agriculture Food and Environment, University of Sana’a, Sana’a P.O. Box 1247, Yemen
| | - Aliki Kalmpourtzidou
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (A.K.); (R.D.G.); (H.C.)
| | - Rachele De Giuseppe
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (A.K.); (R.D.G.); (H.C.)
| | - Hellas Cena
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (A.K.); (R.D.G.); (H.C.)
- Clinical Nutrition Unit, General Medicine, ICS Maugeri IRCCS, 27100 Pavia, Italy
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Zhong Q, Xiao X, Qiu Y, Xu Z, Chen C, Chong B, Zhao X, Hai S, Li S, An Z, Dai L. Protein posttranslational modifications in health and diseases: Functions, regulatory mechanisms, and therapeutic implications. MedComm (Beijing) 2023; 4:e261. [PMID: 37143582 PMCID: PMC10152985 DOI: 10.1002/mco2.261] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 05/06/2023] Open
Abstract
Protein posttranslational modifications (PTMs) refer to the breaking or generation of covalent bonds on the backbones or amino acid side chains of proteins and expand the diversity of proteins, which provides the basis for the emergence of organismal complexity. To date, more than 650 types of protein modifications, such as the most well-known phosphorylation, ubiquitination, glycosylation, methylation, SUMOylation, short-chain and long-chain acylation modifications, redox modifications, and irreversible modifications, have been described, and the inventory is still increasing. By changing the protein conformation, localization, activity, stability, charges, and interactions with other biomolecules, PTMs ultimately alter the phenotypes and biological processes of cells. The homeostasis of protein modifications is important to human health. Abnormal PTMs may cause changes in protein properties and loss of protein functions, which are closely related to the occurrence and development of various diseases. In this review, we systematically introduce the characteristics, regulatory mechanisms, and functions of various PTMs in health and diseases. In addition, the therapeutic prospects in various diseases by targeting PTMs and associated regulatory enzymes are also summarized. This work will deepen the understanding of protein modifications in health and diseases and promote the discovery of diagnostic and prognostic markers and drug targets for diseases.
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Affiliation(s)
- Qian Zhong
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Xina Xiao
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Yijie Qiu
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Zhiqiang Xu
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Chunyu Chen
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Baochen Chong
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Xinjun Zhao
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Shan Hai
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Shuangqing Li
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Zhenmei An
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
| | - Lunzhi Dai
- Department of Endocrinology and MetabolismGeneral Practice Ward/International Medical Center WardGeneral Practice Medical Center and National Clinical Research Center for GeriatricsState Key Laboratory of BiotherapyWest China Hospital, Sichuan UniversityChengduChina
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Association between Edinburgh Postnatal Depression Scale and Serum Levels of Ketone Bodies and Vitamin D, Thyroid Function, and Iron Metabolism. Nutrients 2023; 15:nu15030768. [PMID: 36771476 PMCID: PMC9920872 DOI: 10.3390/nu15030768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Suicide due to postpartum depression is the most common perinatal-related death and is a social concern in Japan. Nutritional deficiencies during pregnancy may contribute to postpartum depression; therefore, we investigated the relationship between postpartum depression and nutritional status during pregnancy and postpartum. We focused specifically on ketone bodies because they are known to protect brain cells. The relationship between the Edinburgh Postnatal Depression Scale (EPDS) scores and the serum levels of ketone bodies and vitamin D, thyroid function, and iron metabolism was examined. Overall, 126 pregnant women were identified for the study, and 99 were eventually included in the analysis. We defined an EPDS score of ≥9 as being positive for postpartum depression, and serum ketone levels were found to be higher in the group with an EPDS score of ≥9 during the second trimester; however, there were no other significant findings. We may be able to predict postpartum depression from a pregnant woman's serum ketone levels in the second trimester. There was a positive correlation between the EPDS scores at 3 days and 1 month postpartum (r = 0.534, p < 0.001). EPDS scores assessed in the early postpartum period may be useful for the timely detection of postpartum depression.
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7
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Jayashankar SS, Arifin KT, Nasaruddin ML. β-Hydroxybutyrate Regulates Activated Microglia to Alleviate Neurodegenerative Processes in Neurological Diseases: A Scoping Review. Nutrients 2023; 15:nu15030524. [PMID: 36771231 PMCID: PMC9921456 DOI: 10.3390/nu15030524] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/20/2023] Open
Abstract
This scoping review aimed to summarise the effects of the ketone body β-hydroxybutyrate. The review details the revealed pathways and functional properties following its intervention in the context of neurodegenerative diseases. In this study, 5 research publications that met the inclusion and exclusion criteria were shortlisted. Following the intervention, we discovered a tendency of reduced inflammatory status in microglia, as evidenced by lower levels of pro-inflammatory mediators produced, reduced microgliosis in afflicted tissues, and enhanced cognitive functions in neurodegenerative models. We found that there is a significant overlap in the mechanism of action of β-hydroxybutyrate (BHB) via activation of the G-protein-Coupled Receptor 109A (GPR109a) receptor and deactivation of the inflammasome complex. Furthermore, although comparing outcomes can be challenging due to the heterogeneity in the study model, the results we have assembled here were consistent, giving us confidence in the intervention's efficacy. We also discussed new studies where BHB is involved in various roles in regulating inflammation in microglia, allowing for fresh therapeutic targets against neurodegeneration. This brief review provides evidence to support the huge potential of BHB in the treatment of neurodegenerative illnesses.
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8
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McDonald TS, Lerskiatiphanich T, Woodruff TM, McCombe PA, Lee JD. Potential mechanisms to modify impaired glucose metabolism in neurodegenerative disorders. J Cereb Blood Flow Metab 2023; 43:26-43. [PMID: 36281012 PMCID: PMC9875350 DOI: 10.1177/0271678x221135061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 09/01/2022] [Accepted: 09/21/2022] [Indexed: 01/28/2023]
Abstract
Neurodegeneration refers to the selective and progressive loss-of-function and atrophy of neurons, and is present in disorders such as Alzheimer's, Huntington's, and Parkinson's disease. Although each disease presents with a unique pattern of neurodegeneration, and subsequent disease phenotype, increasing evidence implicates alterations in energy usage as a shared and core feature in the onset and progression of these disorders. Indeed, disturbances in energy metabolism may contribute to the vulnerability of neurons to apoptosis. In this review we will outline these disturbances in glucose metabolism, and how fatty acids are able to compensate for this impairment in energy production in neurodegenerative disorders. We will also highlight underlying mechanisms that could contribute to these alterations in energy metabolism. A greater understanding of these metabolism-neurodegeneration processes could lead to improved treatment options for neurodegenerative disease patients.
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Affiliation(s)
- Tanya S McDonald
- School of Biomedical Sciences, Faculty of Medicine, The
University of Queensland, St. Lucia, Australia
| | - Titaya Lerskiatiphanich
- School of Biomedical Sciences, Faculty of Medicine, The
University of Queensland, St. Lucia, Australia
| | - Trent M Woodruff
- School of Biomedical Sciences, Faculty of Medicine, The
University of Queensland, St. Lucia, Australia
- Queensland Brain Institute, The University of Queensland, St.
Lucia, Australia
| | - Pamela A McCombe
- Centre for Clinical Research, Faculty of Medicine, The
University of Queensland, St. Lucia, Australia
- Department of Neurology, Royal Brisbane & Women’s Hospital,
Herston, Australia
| | - John D Lee
- School of Biomedical Sciences, Faculty of Medicine, The
University of Queensland, St. Lucia, Australia
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9
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Favorable Effects of Virgin Coconut Oil on Neuronal Damage and Mortality after a Stroke Incidence in the Stroke-Prone Spontaneously Hypertensive Rat. LIFE (BASEL, SWITZERLAND) 2022; 12:life12111857. [PMID: 36430992 PMCID: PMC9694050 DOI: 10.3390/life12111857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022]
Abstract
Stroke is consistently one of the top ten causes of morbidity and mortality globally, whose outcomes are quite variable, necessitating case-specific management. Prophylactic diets before the onset of stroke have been implicated to work. In this research, the effects of virgin coconut oil (VCO) on stroke were evaluated using a stroke-prone spontaneously hypertensive rat (SHRSP) model. Eight-week-old SHRSPs were subjected to the repeated oral administration (5 mL/kg/day) of either 1% Tween 80 (group A) or VCO (group B). An early stroke onset was observed due to hypertension that was aggravation by the administration of 1% NaCl in water ad libitum. The following data were collected: the days until stroke occurred, the survival rate until the animal died, and blood pressure (BP) every two weeks using the tail-cuff method. After necropsy, the organs were harvested, and the brain was processed for a routine histopathological analysis. VCO delayed the incidence of it and prolonged their survival. Compared to group A, group B showed a significantly lowered BP by 20 mmHg at four weeks after the start of VCO treatment. Lastly, the brain histopathology showed that the structurally damaged areas were smaller in group B than they were in group A. The VCO could have protective effects on the brain before and even after stroke incidence.
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10
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Biggio F, Fattuoni C, Mostallino MC, Follesa P. Effects of Chronic Bifidobacteria Administration in Adult Male Rats on Plasma Metabolites: A Preliminary Metabolomic Study. Metabolites 2022; 12:762. [PMID: 36005634 PMCID: PMC9412907 DOI: 10.3390/metabo12080762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Probiotics are live microorganisms distributed in the gastrointestinal tract that confer health benefits to the host when administered in adequate amounts. Bifidobacteria have been widely tested as a therapeutic strategy in the prevention and treatment of a broad spectrum of gastrointestinal disorders as well as in the regulation of the "microbiota-gut-brain axis". Metabolomic techniques can provide details in the study of molecular metabolic mechanisms involved in Bifidobacteria function through the analysis of metabolites that positively contribute to human health. This study was focused on the effects of the chronic assumption of a mixture of Bifidobacteria in adult male rats using a metabolomic approach. Plasma samples were collected at the end of treatment and analyzed with a gas chromatography-mass spectrometry (GC-MS) platform. Partial least square discriminant analysis (PLS-DA) was performed to compare the metabolic pattern in control and probiotic-treated rats. Our results show, in probiotic-treated animals, an increase in metabolites involved in the energetic cycle, such as glucose, erythrose, creatinine, taurine and glycolic acid, as well as 3-hydroxybutyric acid. This is an important metabolite of short-chain fatty acids (SCFA) with multitasking roles in energy circuit balance, and it has also been proposed to have a key role in the prevention and treatment of neurodegenerative diseases.
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Affiliation(s)
- Francesca Biggio
- Department of Life and Environmental Sciences, Section of Neuroscience and Anthropology, University of Cagliari, Monserrato, 09042 Cagliari, Italy
| | - Claudia Fattuoni
- Department of Chemical and Geological Sciences, University of Cagliari, Monserrato, 09042 Cagliari, Italy
| | | | - Paolo Follesa
- Department of Life and Environmental Sciences, Section of Neuroscience and Anthropology, University of Cagliari, Monserrato, 09042 Cagliari, Italy
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Metabolism of Exogenous [2,4- 13C]β-Hydroxybutyrate following Traumatic Brain Injury in 21-22-Day-Old Rats: An Ex Vivo NMR Study. Metabolites 2022; 12:metabo12080710. [PMID: 36005582 PMCID: PMC9414923 DOI: 10.3390/metabo12080710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023] Open
Abstract
Traumatic brain injury (TBI) is leading cause of morbidity in young children. Acute dysregulation of oxidative glucose metabolism within the first hours after injury is a hallmark of TBI. The developing brain relies on ketones as well as glucose for energy. Thus, the aim of this study was to determine the metabolism of ketones early after TBI injury in the developing brain. Following the controlled cortical impact injury model of TBI, 21-22-day-old rats were infused with [2,4-13C]β-hydroxybutyrate during the acute (4 h) period after injury. Using ex vivo 13C-NMR spectroscopy, we determined that 13C-β-hydroxybutyrate (13C-BHB) metabolism was increased in both the ipsilateral and contralateral sides of the brain after TBI. Incorporation of the label was significantly higher in glutamate than glutamine, indicating that 13C-BHB metabolism was higher in neurons than astrocytes in both sham and injured brains. Our results show that (i) ketone metabolism was significantly higher in both the ipsilateral and contralateral sides of the injured brain after TBI; (ii) ketones were extensively metabolized by both astrocytes and neurons, albeit higher in neurons; (iii) the pyruvate recycling pathway determined by incorporation of the label from the metabolism of 13C-BHB into lactate was upregulated in the immature brain after TBI.
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12
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Jiang Z, Yin X, Wang M, Chen T, Wang Y, Gao Z, Wang Z. Effects of Ketogenic Diet on Neuroinflammation in Neurodegenerative Diseases. Aging Dis 2022; 13:1146-1165. [PMID: 35855338 PMCID: PMC9286903 DOI: 10.14336/ad.2021.1217] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 12/17/2021] [Indexed: 11/01/2022] Open
Affiliation(s)
| | | | | | | | | | - Zhongbao Gao
- Correspondence should be addressed to: Dr. Zhenfu Wang () and Dr. Zhongbao Gao (), The Second Medical Center & National Clinical Research Center for Geriatric Disease, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhenfu Wang
- Correspondence should be addressed to: Dr. Zhenfu Wang () and Dr. Zhongbao Gao (), The Second Medical Center & National Clinical Research Center for Geriatric Disease, Chinese PLA General Hospital, Beijing 100853, China
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13
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Bendiksen Skogvold H, Yazdani M, Sandås EM, Østeby Vassli A, Kristensen E, Haarr D, Rootwelt H, Elgstøen KBP. A pioneer study on human 3-nitropropionic acid intoxication: Contributions from metabolomics. J Appl Toxicol 2021; 42:818-829. [PMID: 34725838 DOI: 10.1002/jat.4259] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/21/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022]
Abstract
The neurotoxin 3-nitropropionic acid (3-NPA) is an inhibitor of succinate dehydrogenase, an enzyme participating both in the citric acid cycle and the mitochondrial respiratory chain. In human intoxications, it produces symptoms such as vomiting and stomach ache in mild cases, and dystonia, coma, and sometimes death in severe cases. We report the results from a liquid chromatography-Orbitrap mass spectrometry metabolomics study mapping the metabolic impacts of 3-NPA intoxication in plasma, urine, and cerebrospinal fluid (CSF) samples of a Norwegian boy initially suspected to suffer from a mitochondrial disease. In addition to the identification of 3-NPA, our findings included a large number of annotated/identified altered metabolites (80, 160, and 62 in plasma, urine, and CSF samples, respectively) belonging to different compound classes, for example, amino acids, fatty acids, and purines and pyrimidines. Our findings indicated protective mechanisms to attenuate the toxic effects of 3-NPA (e.g., decreased oleamide), occurrence of increased oxidative stress in the patient (such as increased free fatty acids and hypoxanthine) and energy turbulence caused by the intoxication (e.g., increased succinate). To our knowledge, this is the first case of 3-NPA intoxication reported in Norway and the first published metabolomics study of human 3-NPA intoxication worldwide. The unexpected identification of 3-NPA illustrates the importance for health care providers to consider intake-related intoxications during diagnostic evaluations, treatment and follow-up examinations for neurotoxicity and a wide range of metabolic derangements.
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Affiliation(s)
- Hanne Bendiksen Skogvold
- Department of Mechanical, Electronic and Chemical Engineering, Faculty of Technology, Art and Design, Oslo Metropolitan University, Oslo, Norway.,National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Mazyar Yazdani
- National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Elise Mørk Sandås
- National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Anja Østeby Vassli
- National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Erle Kristensen
- National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Dagfinn Haarr
- Chief City Medical Officer, City of Kristiansand, Kristiansand, Norway
| | - Helge Rootwelt
- Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Katja Benedikte Prestø Elgstøen
- National Unit for Screening and Diagnosis of Congenital Pediatric Metabolic Disorders, Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, Oslo, Norway
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Consorti A, Di Marco I, Sansevero G. Physical Exercise Modulates Brain Physiology Through a Network of Long- and Short-Range Cellular Interactions. Front Mol Neurosci 2021; 14:710303. [PMID: 34489641 PMCID: PMC8417110 DOI: 10.3389/fnmol.2021.710303] [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: 05/15/2021] [Accepted: 07/23/2021] [Indexed: 12/14/2022] Open
Abstract
In the last decades, the effects of sedentary lifestyles have emerged as a critical aspect of modern society. Interestingly, recent evidence demonstrated that physical exercise plays an important role not only in maintaining peripheral health but also in the regulation of central nervous system function. Many studies have shown that physical exercise promotes the release of molecules, involved in neuronal survival, differentiation, plasticity and neurogenesis, from several peripheral organs. Thus, aerobic exercise has emerged as an intriguing tool that, on one hand, could serve as a therapeutic protocol for diseases of the nervous system, and on the other hand, could help to unravel potential molecular targets for pharmacological approaches. In the present review, we will summarize the cellular interactions that mediate the effects of physical exercise on brain health, starting from the factors released in myocytes during muscle contraction to the cellular pathways that regulate higher cognitive functions, in both health and disease.
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Affiliation(s)
- Alan Consorti
- Neuroscience Institute, National Research Council (CNR), Pisa, Italy
- NEUROFARBA, University of Florence, Florence, Italy
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15
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Vahideh Mirzaei, Eidi A, Manaheji H, Oryan S, Zaringhalam J. β-Hydroxybutyrate Attenuates Clinical Symptoms and Pain Behaviors in MOG-Induced Encephalomyelitis. NEUROCHEM J+ 2021. [DOI: 10.1134/s1819712421020100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Townsend LK, MacPherson REK, Wright DC. New Horizon: Exercise and a Focus on Tissue-Brain Crosstalk. J Clin Endocrinol Metab 2021; 106:2147-2163. [PMID: 33982072 DOI: 10.1210/clinem/dgab333] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Indexed: 01/03/2023]
Abstract
The world population is aging, leading to increased rates of neurodegenerative disorders. Exercise has countless health benefits and has consistently been shown to improve brain health and cognitive function. The purpose of this review is to provide an overview of exercise-induced adaptations in the brain with a focus on crosstalk between peripheral tissues and the brain. We highlight recent investigations into exercise-induced circulating factors, or exerkines, including irisin, cathepsin B, GPLD1, and ketones and the mechanisms mediating their effects in the brain.
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Affiliation(s)
- Logan K Townsend
- Department of Medicine, McMaster University, Hamilton, L8S 4L8, Canada
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, N1G 2W1, Canada
| | - Rebecca E K MacPherson
- Department of Health Sciences and Centre for Neuroscience, Brock University, St. Catharines, L2S 3A1, Canada
| | - David C Wright
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, N1G 2W1, Canada
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17
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Hyeon JW, Kim AH, Yano H. Epigenetic regulation in Huntington's disease. Neurochem Int 2021; 148:105074. [PMID: 34038804 DOI: 10.1016/j.neuint.2021.105074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/23/2021] [Accepted: 05/17/2021] [Indexed: 12/25/2022]
Abstract
Huntington's disease (HD) is a devastating and fatal monogenic neurodegenerative disorder characterized by progressive loss of selective neurons in the brain and is caused by an abnormal expansion of CAG trinucleotide repeats in a coding exon of the huntingtin (HTT) gene. Progressive gene expression changes that begin at premanifest stages are a prominent feature of HD and are thought to contribute to disease progression. Increasing evidence suggests the critical involvement of epigenetic mechanisms in abnormal transcription in HD. Genome-wide alterations of a number of epigenetic modifications, including DNA methylation and multiple histone modifications, are associated with HD, suggesting that mutant HTT causes complex epigenetic abnormalities and chromatin structural changes, which may represent an underlying pathogenic mechanism. The causal relationship of specific epigenetic changes to early transcriptional alterations and to disease pathogenesis require further investigation. In this article, we review recent studies on epigenetic regulation in HD with a focus on DNA and histone modifications. We also discuss the contribution of epigenetic modifications to HD pathogenesis as well as potential mechanisms linking mutant HTT and epigenetic alterations. Finally, we discuss the therapeutic potential of epigenetic-based treatments.
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Affiliation(s)
- Jae Wook Hyeon
- Department of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Albert H Kim
- Department of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA; Department of Neurology, Washington University School of Medicine, St. Louis, MO, 63110, USA; Department of Genetics, Washington University School of Medicine, St. Louis, MO, 63110, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, 63110, USA; Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Hiroko Yano
- Department of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, 63110, USA; Department of Neurology, Washington University School of Medicine, St. Louis, MO, 63110, USA; Department of Genetics, Washington University School of Medicine, St. Louis, MO, 63110, USA; Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA.
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18
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Molecular Mechanisms Underlying the Beneficial Effects of Exercise on Brain Function and Neurological Disorders. Int J Mol Sci 2021; 22:ijms22084052. [PMID: 33919972 PMCID: PMC8070923 DOI: 10.3390/ijms22084052] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
As life expectancy has increased, particularly in developed countries, due to medical advances and increased prosperity, age-related neurological diseases and mental health disorders have become more prevalent health issues, reducing the well-being and quality of life of sufferers and their families. In recent decades, due to reduced work-related levels of physical activity, and key research insights, prescribing adequate exercise has become an innovative strategy to prevent or delay the onset of these pathologies and has been demonstrated to have therapeutic benefits when used as a sole or combination treatment. Recent evidence suggests that the beneficial effects of exercise on the brain are related to several underlying mechanisms related to muscle–brain, liver–brain and gut–brain crosstalk. Therefore, this review aims to summarize the most relevant current knowledge of the impact of exercise on mood disorders and neurodegenerative diseases, and to highlight the established and potential underlying mechanisms involved in exercise–brain communication and their benefits for physiology and brain function.
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Mierziak J, Burgberger M, Wojtasik W. 3-Hydroxybutyrate as a Metabolite and a Signal Molecule Regulating Processes of Living Organisms. Biomolecules 2021; 11:biom11030402. [PMID: 33803253 PMCID: PMC8000602 DOI: 10.3390/biom11030402] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 02/06/2023] Open
Abstract
3-hydroxybutyrate (3-HB) as a very important metabolite occurs in animals, bacteria and plants. It is well known that in animals, 3-HB is formed as a product of the normal metabolism of fatty acid oxidation and can therefore be used as an energy source in the absence of sufficient blood glucose. In microorganisms, 3-HB mainly serves as a substrate for the synthesis of polyhydroxybutyrate, which is a reserve material. Recent studies show that in plants, 3-HB acts as a regulatory molecule that most likely influences the expression of genes involved in DNA methylation, thereby altering DNA methylation levels. Additionally, in animals, 3-HB is not only an intermediate metabolite, but also an important regulatory molecule that can influence gene expression, lipid metabolism, neuronal function, and overall metabolic rate. Some of these effects are the direct effects of 3-HB itself, while others are indirect effects, regulated by the metabolites into which 3-HB is converted. One of the most important regulatory functions of 3-HB is the inhibition of the activity of histone deacetylases and thus the epigenetic regulation of many genes. Due to the number of functions of this compound, it also shows promising therapeutic properties.
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20
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Li Z, McCafferty KJ, Judd RL. Role of HCA 2 in Regulating Intestinal Homeostasis and Suppressing Colon Carcinogenesis. Front Immunol 2021; 12:606384. [PMID: 33708203 PMCID: PMC7940178 DOI: 10.3389/fimmu.2021.606384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/05/2021] [Indexed: 12/23/2022] Open
Abstract
Hydroxycarboxylic acid receptor 2 (HCA2) is vital for sensing intermediates of metabolism, including β-hydroxybutyrate and butyrate. It also regulates profound anti-inflammatory effects in various tissues, indicating that HCA2 may serve as an essential therapeutic target for mediating inflammation-associated diseases. Butyrate and niacin, endogenous and exogenous ligands of HCA2, have been reported to play an essential role in maintaining intestinal homeostasis. HCA2, predominantly expressed in diverse immune cells, is also present in intestinal epithelial cells (IECs), where it regulates the intricate communication network between diet, microbiota, and immune cells. This review summarizes the physiological role of HCA2 in intestinal homeostasis and its pathological role in intestinal inflammation and cancer.
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Affiliation(s)
- Zhuoyue Li
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Kayleen J McCafferty
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Robert L Judd
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
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21
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Hecklau K, Mueller S, Koch SP, Mehkary MH, Kilic B, Harms C, Boehm-Sturm P, Yildirim F. The Effects of Selective Inhibition of Histone Deacetylase 1 and 3 in Huntington's Disease Mice. Front Mol Neurosci 2021; 14:616886. [PMID: 33679321 PMCID: PMC7925995 DOI: 10.3389/fnmol.2021.616886] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/27/2021] [Indexed: 01/15/2023] Open
Abstract
Huntington's disease (HD) is an autosomal dominant neurodegenerative disease characterized by a late clinical onset of psychiatric, cognitive, and motor symptoms. Transcriptional dysregulation is an early and central disease mechanism which is accompanied by epigenetic alterations in HD. Previous studies demonstrated that targeting transcriptional changes by inhibition of histone deacetylases (HDACs), especially the class I HDACs, provides therapeutic effects. Yet, their exact mechanisms of action and the features of HD pathology, on which these inhibitors act remain to be elucidated. Here, using transcriptional profiling, we found that selective inhibition of HDAC1 and HDAC3 by RGFP109 alleviated transcriptional dysregulation of a number of genes, including the transcription factor genes Neurod2 and Nr4a2, and gene sets and programs, especially those that are associated to insulin-like growth factor pathway, in the striatum of R6/1 mice. RGFP109 treatment led to a modest improvement of the motor skill learning and coordination deficit on the RotaRod test, while it did not alter the locomotor and anxiety-like phenotypes in R6/1 animals. We also found, by volumetric MRI, a widespread brain atrophy in the R6/1 mice at the symptomatic disease stage, on which RGFP109 showed no significant effects. Collectively, our combined work suggests that specific HDAC1 and HDAC3 inhibition may offer benefits for alleviating the motor phenotypic deficits and transcriptional dysregulation in HD.
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Affiliation(s)
- Katharina Hecklau
- Department of Neuropsychiatry, Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Susanne Mueller
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité – Universitätsmedizin Berlin, Berlin, Germany
- Charité Core Facility 7T Experimental MRIs, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Stefan Paul Koch
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité – Universitätsmedizin Berlin, Berlin, Germany
- Charité Core Facility 7T Experimental MRIs, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Mustafa Hussain Mehkary
- Department of Neuropsychiatry, Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Busra Kilic
- Department of Neuropsychiatry, Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Harms
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité – Universitätsmedizin Berlin, Berlin, Germany
- Einstein Center for Neurosciences Berlin, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Philipp Boehm-Sturm
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité – Universitätsmedizin Berlin, Berlin, Germany
- Charité Core Facility 7T Experimental MRIs, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Ferah Yildirim
- Department of Neuropsychiatry, Department of Psychiatry and Psychotherapy, Charité – Universitätsmedizin Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Einstein Center for Neurosciences Berlin, Charité – Universitätsmedizin Berlin, Berlin, Germany
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22
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Su M, Wang W, Liu F, Li H. Recent Progress on the Discovery of NLRP3 Inhibitors and their Therapeutic Potential. Curr Med Chem 2021; 28:569-582. [PMID: 31971103 DOI: 10.2174/0929867327666200123093544] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 11/18/2019] [Accepted: 11/24/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Inflammation is the body's immune system's fast coordinating response to irritants caused by pathogens, external injuries, and chemical or radiation effects. The nucleotidebinding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is a critical component of the innate immune system. The dysfunction of NLRP3 inflammasome contributes to various pathogeneses of complex diseases, such as uncontrolled infection, autoimmune diseases, neurodegenerative diseases, and metabolic disorders. This review describes recent progress on the discovery of NLRP3 inflammasome inhibitors and their therapeutic potential. METHODS Based on the mechanism of NLRP3 activation, several types of NLRP3 inhibitors are described and summarized according to their origins, structures, bioactivity, and mechanism of action. Structure-Activity Relationship (SAR) is also listed for different scaffolds, as well as effective pharmacophore. RESULTS Over one-hundred papers were included in the review. The development of NLRP3 inhibitors has been described from the earliest glyburide in 2001 to the latest progress in 2019. Several series of inhibitors have been categorized, such as JC-series based on glyburide and BC-series based on 2APB. Many other small molecules such as NLRP3 inhibitors are also listed. SAR, application in related therapeutic models, and five different action mechanisms are described. CONCLUSION The findings of this review confirmed the importance of developing NLRP3 inflammasome inhibitors. Various NLRP3 inhibitors have been discovered as effective therapeutic treatments for multiple diseases, such as type II diabetes, experimental autoimmune encephalomyelitis, stressrelated mood disorders, etc. The development of a full range of NLRP3 inflammasome inhibitors is still at its foundational phase. We are looking forward to the identification of inhibitory agents that provide the most potent therapeutic strategies and efficiently treat NLRP3 inflammasome-related inflammatory diseases.
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Affiliation(s)
- Ma Su
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 1 Wenjing Road, Suzhou 215123, China
| | - Weiwei Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 1 Wenjing Road, Suzhou 215123, China
| | - Feng Liu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 1 Wenjing Road, Suzhou 215123, China
| | - Huanqiu Li
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Soochow University, 1 Wenjing Road, Suzhou 215123, China
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23
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Kong G, Liu J, Li R, Lin J, Huang Z, Yang Z, Wu X, Huang Z, Zhu Q, Wu X. Ketone Metabolite β-Hydroxybutyrate Ameliorates Inflammation After Spinal Cord Injury by Inhibiting the NLRP3 Inflammasome. Neurochem Res 2021; 46:213-229. [PMID: 33108630 DOI: 10.1007/s11064-020-03156-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/18/2020] [Accepted: 10/21/2020] [Indexed: 12/18/2022]
Abstract
Ketogenic diet (KD) has been shown to be beneficial in a range of neurological disorders, with ketone metabolite β-hydroxybutyrate (βOHB) reported to block the nucleotide oligomerization domain-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome in bone marrow-derived macrophages. In this study, we show that pretreatment with KD or in situ βOHB suppressed macrophages/microglia activation and the overproduction of inflammatory cytokines, while KD downregulated the expression of NLRP3 inflammasome. Moreover, KD promoted macrophages/microglia transformation from the M1 phenotype to the M2a phenotype following spinal cord injury (SCI) in the in vivo study. Rats in the KD group demonstrated improved behavioral and electrophysiological recovery after SCI when compared to those rats in the standard diet group. The in vitro study performed on BV2 cells indicated that βOHB inhibited an LPS+ATP-induced inflammatory response and decreased NLRP3 protein levels. Our data demonstrated that pretreatment with KD attenuated neuroinflammation following SCI, probably by inhibiting NLRP3 inflammasome and shifting the activation state of macrophages/microglia from the M1 to the M2a phenotype. Therefore, the ketone metabolite βOHB might provide a potential future therapeutic strategy for SCI.
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Affiliation(s)
- Ganggang Kong
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junhao Liu
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Rong Li
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Junyu Lin
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Zucheng Huang
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Zhou Yang
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Xiuhua Wu
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Zhiping Huang
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Qingan Zhu
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China.
| | - Xiaoliang Wu
- Division of Spine Surgery, Department of Orthopedics, Nanfang Hospital, Southern Medical University, 1838 North Guangzhou Avenue, Guangzhou, 510515, Guangdong, China.
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24
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Yamanashi T, Iwata M, Shibushita M, Tsunetomi K, Nagata M, Kajitani N, Miura A, Matsuo R, Nishiguchi T, Kato TA, Setoyama D, Shirayama Y, Watanabe K, Shinozaki G, Kaneko K. Beta-hydroxybutyrate, an endogenous NLRP3 inflammasome inhibitor, attenuates anxiety-related behavior in a rodent post-traumatic stress disorder model. Sci Rep 2020; 10:21629. [PMID: 33303808 PMCID: PMC7728809 DOI: 10.1038/s41598-020-78410-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/24/2020] [Indexed: 12/21/2022] Open
Abstract
Accumulating evidence suggests that elevated inflammation contributes to the pathophysiology of post-traumatic stress disorder (PTSD) and that anti-inflammatory drugs might be a new treatment strategy for PTSD. It has been reported that beta-hydroxybutyrate (BHB), one of the main ketone bodies produced, can have an anti-inflammatory and antidepressant effect. Here, we investigated the potential anti-anxiety and anti-inflammatory effects of BHB using a rodent PTSD model, induced by single prolonged stress (SPS). Male, Sprague–Dawley rats were employed in this study. Repeated administration of BHB attenuated SPS-induced anxiety-related behaviors evaluated by the elevated plus maze test. SPS increased the serum levels of TNF-α and IL-1β. In contrast, BHB administration partially attenuated the increase of serum TNF-α. These findings demonstrate that BHB exerts its anxiolytic effects, possibly by inhibiting systemic TNF-α. Hence, BHB may be a novel therapeutic candidate for the treatment of PTSD.
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Affiliation(s)
- Takehiko Yamanashi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan.,Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Masaaki Iwata
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan.
| | - Midori Shibushita
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Kyohei Tsunetomi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Mayu Nagata
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Naofumi Kajitani
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Akihiko Miura
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Ryoichi Matsuo
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Tsuyoshi Nishiguchi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
| | - Takahiro A Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Daiki Setoyama
- Clinical Laboratories, Kyushu University Hospital, Fukuoka, Japan
| | - Yukihiko Shirayama
- Department of Psychiatry, Teikyo University Chiba Medical Center, Ichihara, Japan
| | | | - Gen Shinozaki
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Koichi Kaneko
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
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25
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Effects of Ketone Bodies on Brain Metabolism and Function in Neurodegenerative Diseases. Int J Mol Sci 2020; 21:ijms21228767. [PMID: 33233502 PMCID: PMC7699472 DOI: 10.3390/ijms21228767] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023] Open
Abstract
Under normal physiological conditions the brain primarily utilizes glucose for ATP generation. However, in situations where glucose is sparse, e.g., during prolonged fasting, ketone bodies become an important energy source for the brain. The brain’s utilization of ketones seems to depend mainly on the concentration in the blood, thus many dietary approaches such as ketogenic diets, ingestion of ketogenic medium-chain fatty acids or exogenous ketones, facilitate significant changes in the brain’s metabolism. Therefore, these approaches may ameliorate the energy crisis in neurodegenerative diseases, which are characterized by a deterioration of the brain’s glucose metabolism, providing a therapeutic advantage in these diseases. Most clinical studies examining the neuroprotective role of ketone bodies have been conducted in patients with Alzheimer’s disease, where brain imaging studies support the notion of enhancing brain energy metabolism with ketones. Likewise, a few studies show modest functional improvements in patients with Parkinson’s disease and cognitive benefits in patients with—or at risk of—Alzheimer’s disease after ketogenic interventions. Here, we summarize current knowledge on how ketogenic interventions support brain metabolism and discuss the therapeutic role of ketones in neurodegenerative disease, emphasizing clinical data.
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Montiel T, Montes-Ortega LA, Flores-Yáñez S, Massieu L. Treatment with the Ketone Body D-β-hydroxybutyrate Attenuates Autophagy Activated by NMDA and Reduces Excitotoxic Neuronal Damage in the Rat Striatum In Vivo. Curr Pharm Des 2020; 26:1377-1387. [PMID: 31957603 DOI: 10.2174/1381612826666200115103646] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/03/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND The ketone bodies (KB), β-hydroxybutyrate (BHB) and acetoacetate, have been proposed for the treatment of acute and chronic neurological disorders, however, the molecular mechanisms involved in KB protection are not well understood. KB can substitute for glucose and support mitochondrial metabolism increasing cell survival. We have reported that the D-isomer of BHB (D-BHB) stimulates autophagic degradation during glucose deprivation in cultured neurons increasing cell viability. Autophagy is a lysosomal degradation process of damaged proteins and organelles activated during nutrient deprivation to obtain building blocks and energy. However, impaired or excessive autophagy can contribute to neuronal death. OBJECTIVE The aim of the present study was to test whether D-BHB can preserve autophagic function in an in vivo model of excitotoxic damage induced by the administration of the glutamate receptor agonist, N-methyl-Daspartate (NMDA), in the rat striatum. METHODS D-BHB was administered through an intravenous injection followed by either an intraperitoneal injection (i.v+i.p) or a continuous epidural infusion (i.v+pump), or through a continuous infusion of D-BHB alone. Changes in the autophagy proteins ATG7, ATG5, BECLIN 1 (BECN1), LC3, Sequestrosome1/p62 (SQSTM1/ p62) and the lysosomal membrane protein LAMP2, were evaluated by immunoblot. The lesion volume was measured in cresyl violet-stained brain sections. RESULTS Autophagy is activated early after NMDA injection but autophagic degradation is impaired due to the cleavage of LAMP2. Twenty-four h after NMDA intrastriatal injection, the autophagic flux is re-established, but LAMP2 cleavage is still observed. The administration of D-BHB through the i.v+pump protocol reduced the content of autophagic proteins and the cleavage of LAMP2, suggesting decreased autophagosome formation and lysosomal membrane preservation, improving autophagic degradation. D-BHB also reduced brain injury. The i.v+i.p administration protocol and the infusion of D-BHB alone showed no effect on autophagy activation or degradation.
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Affiliation(s)
- Teresa Montiel
- Departamento de Neuropatologia Molecular, Division de Neurociencias. Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, CP 04510, Ciudad de Mexico, Mexico
| | - Luis A Montes-Ortega
- Departamento de Neuropatologia Molecular, Division de Neurociencias. Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, CP 04510, Ciudad de Mexico, Mexico
| | - Susana Flores-Yáñez
- Departamento de Neuropatologia Molecular, Division de Neurociencias. Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, CP 04510, Ciudad de Mexico, Mexico
| | - Lourdes Massieu
- Departamento de Neuropatologia Molecular, Division de Neurociencias. Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, CP 04510, Ciudad de Mexico, Mexico
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Habieb ME, Mohamed MA, El Gamal DM, Hawas AM, Mohamed TM. Anti-aging effect of DL-β-hydroxybutyrate against hepatic cellular senescence induced by D-galactose or γ-irradiation via autophagic flux stimulation in male rats. Arch Gerontol Geriatr 2020; 92:104288. [PMID: 33147533 DOI: 10.1016/j.archger.2020.104288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/30/2020] [Accepted: 10/19/2020] [Indexed: 12/16/2022]
Abstract
The present study aims to shed new light on anti-aging effect of DL-β-hydroxybutyrate (βOHB) against hepatic cellular senescence induced by d-galactose or γ-irradiation. The rats divided into 6 groups. Group 1, control, group 2, exposed to γ-ray (5 GY), group 3, injected by d-galactose (150 mg/kg) daily for consecutive 6 weeks, which regarded to induce the aging, group 4, injected intraperitoneal by β-hydroxybutyrate (βOHB) (72.8 mg/kg) daily for consecutive 14 days, group 5, exposed to γ-ray then treated with βOHB daily for consecutive 14 days, group 6, injected daily with d-galactose for consecutive 6 weeks, then treated with βOHB daily at the last two weeks of d-galactose. Aspartate amino transferase (AST), alanine amino transferase (ALT), Insulin, interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were estimated in serum. Moreover, protein expression of Microtubule-associated proteins 1A/1B light chain 3B (LC3-II/LC3-I) ratio, mechanistic target of rapamycin (mTOR), pAMPK, mRNA gene expression of 5' AMP-activated protein kinase (AMPK), Nucleoporin p62 (p62), cyclin-dependent kinase inhibitor 1(P21CIP1), cyclin-dependent kinase inhibitor 2A (p16INK4a) and DNA fragmentation percentage were measured in liver tissue as a biomarker of cellular senescence. The results confirmed that βOHB modulated serum level of AST, ALT, insulin, IL-6 and TNF-α, protein expression of mTOR and LC3-II/LC3-I ratio, pAMPK and p62 in liver aging model induced by d-galactose or γ-irradiation. Histopathological examination results of liver tissue indicated coincidence with those recorded by molecular biochemical inspection. Taken together, these findings suggest that βOHB may be useful in combating hepatic cellular senescence induced by d-galactose or γ-irradiation via autophagy dependent mechanisms.
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Affiliation(s)
- M E Habieb
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt.
| | - M A Mohamed
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt
| | - D M El Gamal
- Biochemistry Division, Chemistry Dept., Faculty of Science, Tanta University, Egypt
| | - A M Hawas
- Drug Radiation Research Dept., National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority, P.O. Box, 29 Nasr City, Cairo, Egypt
| | - T M Mohamed
- Biochemistry Division, Chemistry Dept., Faculty of Science, Tanta University, Egypt
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Abstract
PURPOSE OF REVIEW Ketogenic diets, which have been used to treat drug-refractory paediatric epilepsy for over 100 years, are becoming increasingly popular for the treatment of other neurological conditions, including mental illnesses. We aim to explain how ketogenic diets can improve mental illness biopathology and review the recent clinical literature. RECENT FINDINGS Psychiatric conditions, such as schizophrenia, depression, bipolar disorder and binge eating disorder, are neurometabolic diseases that share several common mechanistic biopathologies. These include glucose hypometabolism, neurotransmitter imbalances, oxidative stress and inflammation. There is strong evidence that ketogenic diets can address these four fundamental diseases, and now complementary clinical evidence that ketogenic diets can improve the patients' symptoms. SUMMARY It is important that researchers and clinicians are made aware of the trajectory of the evidence for the implementation of ketogenic diets in mental illnesses, as such a metabolic intervention provides not only a novel form of symptomatic treatment, but one that may be able to directly address the underlying disease mechanisms and, in so doing, also treat burdensome comorbidities (see Video, Supplementary Digital Content 1, http://links.lww.com/COE/A16, which summarizes the contents of this review).
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Affiliation(s)
- Nicholas G Norwitz
- Department of Physiology, Anatomy and Genetics, Oxford University, Oxford, UK
| | - Shebani Sethi
- Metabolic Psychiatry Clinic, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California
| | - Christopher M Palmer
- Department of Postgraduate and Continuing Education, McLean Hospital, Harvard Medical School, Belmont, Massachusetts, USA
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Narayan P, Reid S, Scotter EL, McGregor AL, Mehrabi NF, Singh-Bains MK, Glass M, Faull RLM, Snell RG, Dragunow M. Inconsistencies in histone acetylation patterns among different HD model systems and HD post-mortem brains. Neurobiol Dis 2020; 146:105092. [PMID: 32979507 DOI: 10.1016/j.nbd.2020.105092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 08/28/2020] [Accepted: 09/21/2020] [Indexed: 01/10/2023] Open
Abstract
Huntington's disease (HD) is a neurodegenerative disorder caused by a CAG trinucleotide repeat expansion in exon 1 of the huntingtin gene. Emerging evidence shows that additional epigenetic factors can modify disease phenotypes. Harnessing the ability of the epigenome to modify the disease for therapeutic purposes is therefore of interest. Epigenome modifiers, such as histone deacetylase inhibitors (HDACi), have improved pathology in a range of HD models. Yet in clinical trials, HDACi have failed to alleviate HD symptoms in patients. This study investigated potential reasons for the lack of translation of the therapeutic benefits of HDACi from lab to clinic. We analysed histone acetylation patterns of immuno-positive nuclei from brain sections and tissue microarrays from post-mortem human control and HD cases alongside several well-established HD models (OVT73 transgenic HD sheep, YAC128 mice, and an in vitro cell model expressing 97Q mutant huntingtin). Significant increases in histone H4 acetylation were observed in post-mortem HD cases, OVT73 transgenic HD sheep and in vitro models; these changes were absent in YAC128 mice. In addition, nuclear labelling for acetyl-histone H4 levels were inversely proportional to mutant huntingtin aggregate load in HD human cortex. Our data raise concerns regarding the utility of HDACi for the treatment of HD when regions of pathology exhibit already elevated histone acetylation patterns and emphasize the importance of searching for alternative epigenetic targets in future therapeutic strategies aiming to rescue HD phenotypes.
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Affiliation(s)
- Pritika Narayan
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand; School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand.
| | - Suzanne Reid
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand; School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand.
| | - Emma L Scotter
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand.
| | - Ailsa L McGregor
- School of Pharmacy, University of Otago, Dunedin 9016, New Zealand.
| | - Nasim F Mehrabi
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand.
| | | | - Michelle Glass
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand; Department of Pharmacology and Toxicology, University of Otago, Dunedin 9016, New Zealand.
| | - Richard L M Faull
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand.
| | - Russell G Snell
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand; School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand.
| | - Mike Dragunow
- Centre for Brain Research, University of Auckland, Auckland 1023, New Zealand.
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Benito A, Hajji N, O’Neill K, Keun HC, Syed N. β-Hydroxybutyrate Oxidation Promotes the Accumulation of Immunometabolites in Activated Microglia Cells. Metabolites 2020; 10:metabo10090346. [PMID: 32859120 PMCID: PMC7570092 DOI: 10.3390/metabo10090346] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/11/2020] [Accepted: 08/25/2020] [Indexed: 01/24/2023] Open
Abstract
Metabolic regulation of immune cells has arisen as a critical set of processes required for appropriate response to immunological signals. While our knowledge in this area has rapidly expanded in leukocytes, much less is known about the metabolic regulation of brain-resident microglia. In particular, the role of alternative nutrients to glucose remains poorly understood. Here, we use stable-isotope (13C) tracing strategies and metabolomics to characterize the oxidative metabolism of β-hydroxybutyrate (BHB) in human (HMC3) and murine (BV2) microglia cells and the interplay with glucose in resting and LPS-activated BV2 cells. We found that BHB is imported and oxidised in the TCA cycle in both cell lines with a subsequent increase in the cytosolic NADH:NAD+ ratio. In BV2 cells, stimulation with LPS upregulated the glycolytic flux, increased the cytosolic NADH:NAD+ ratio and promoted the accumulation of the glycolytic intermediate dihydroxyacetone phosphate (DHAP). The addition of BHB enhanced LPS-induced accumulation of DHAP and promoted glucose-derived lactate export. BHB also synergistically increased LPS-induced accumulation of succinate and other key immunometabolites, such as α-ketoglutarate and fumarate generated by the TCA cycle. Finally, BHB upregulated the expression of a key pro-inflammatory (M1 polarisation) marker gene, NOS2, in BV2 cells activated with LPS. In conclusion, we identify BHB as a potentially immunomodulatory metabolic substrate for microglia that promotes metabolic reprogramming during pro-inflammatory response.
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Affiliation(s)
- Adrian Benito
- Division of Neuroscience, Department of Brain Sciences, Imperial College London, London W12 0NN, UK; (A.B.); (N.H.); (K.O.)
| | - Nabil Hajji
- Division of Neuroscience, Department of Brain Sciences, Imperial College London, London W12 0NN, UK; (A.B.); (N.H.); (K.O.)
| | - Kevin O’Neill
- Division of Neuroscience, Department of Brain Sciences, Imperial College London, London W12 0NN, UK; (A.B.); (N.H.); (K.O.)
| | - Hector C. Keun
- Division of Cancer, Department of Surgery and Cancer, Imperial College London, London W12 0NN, UK
- Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, UK
- Correspondence: (H.C.K.); (N.S.)
| | - Nelofer Syed
- Division of Neuroscience, Department of Brain Sciences, Imperial College London, London W12 0NN, UK; (A.B.); (N.H.); (K.O.)
- Correspondence: (H.C.K.); (N.S.)
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Ari C, Murdun C, Goldhagen C, Koutnik AP, Bharwani SR, Diamond DM, Kindy M, D’Agostino DP, Kovacs Z. Exogenous Ketone Supplements Improved Motor Performance in Preclinical Rodent Models. Nutrients 2020; 12:nu12082459. [PMID: 32824223 PMCID: PMC7468837 DOI: 10.3390/nu12082459] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/05/2020] [Accepted: 08/13/2020] [Indexed: 12/14/2022] Open
Abstract
Nutritional ketosis has been proven effective for neurometabolic conditions and disorders linked to metabolic dysregulation. While inducing nutritional ketosis, ketogenic diet (KD) can improve motor performance in the context of certain disease states, but it is unknown whether exogenous ketone supplements—alternatives to KDs—may have similar effects. Therefore, we investigated the effect of ketone supplements on motor performance, using accelerating rotarod test and on postexercise blood glucose and R-beta-hydroxybutyrate (R-βHB) levels in rodent models with and without pathology. The effect of KD, butanediol (BD), ketone-ester (KE), ketone-salt (KS), and their combination (KE + KS: KEKS) or mixtures with medium chain triglyceride (MCT) (KE + MCT: KEMCT; KS + MCT: KSMCT) was tested in Sprague-Dawley (SPD) and WAG/Rij (WR) rats and in GLUT-1 Deficiency Syndrome (G1D) mice. Motor performance was enhanced by KEMCT acutely, KE and KS subchronically in SPD rats, by KEKS and KEMCT groups in WR rats, and by KE chronically in G1D mice. We demonstrated that exogenous ketone supplementation improved motor performance to various degrees in rodent models, while effectively elevated R-βHB and in some cases offsets postexercise blood glucose elevations. Our results suggest that improvement of motor performance varies depending on the strain of rodents, specific ketone formulation, age, and exposure frequency.
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Affiliation(s)
- Csilla Ari
- Department of Psychology, Behavioral Neuroscience Research Laboratory, University of South Florida, Tampa, FL 33620, USA; (S.R.B.); (D.M.D.)
- Ketone Technologies, Tampa, FL 33612, USA;
- Correspondence: or ; Tel.: +1-813-240-9925
| | - Cem Murdun
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; (C.M.); (C.G.); (A.P.K.)
| | - Craig Goldhagen
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; (C.M.); (C.G.); (A.P.K.)
| | - Andrew P. Koutnik
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; (C.M.); (C.G.); (A.P.K.)
- Institute for Human and Machine Cognition, Ocala, FL 34471, USA
| | - Sahil R. Bharwani
- Department of Psychology, Behavioral Neuroscience Research Laboratory, University of South Florida, Tampa, FL 33620, USA; (S.R.B.); (D.M.D.)
| | - David M. Diamond
- Department of Psychology, Behavioral Neuroscience Research Laboratory, University of South Florida, Tampa, FL 33620, USA; (S.R.B.); (D.M.D.)
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; (C.M.); (C.G.); (A.P.K.)
| | - Mark Kindy
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL 33612, USA;
- James A. Haley VA Medical Center, Tampa, FL 33612, USA
- Shriners Hospital for Children, Tampa, FL 33612, USA
| | - Dominic P. D’Agostino
- Ketone Technologies, Tampa, FL 33612, USA;
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; (C.M.); (C.G.); (A.P.K.)
- Institute for Human and Machine Cognition, Ocala, FL 34471, USA
| | - Zsolt Kovacs
- Savaria Department of Biology, ELTE Eötvös Loránd University, Savaria University Centre, Károlyi Gáspár tér 4., 9700 Szombathely, Hungary;
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Ketogenic therapy in neurodegenerative and psychiatric disorders: From mice to men. Prog Neuropsychopharmacol Biol Psychiatry 2020; 101:109913. [PMID: 32151695 DOI: 10.1016/j.pnpbp.2020.109913] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 02/11/2020] [Accepted: 03/05/2020] [Indexed: 01/31/2023]
Abstract
Ketogenic diet is a low carbohydrate and high fat diet that has been used for over 100 years in the management of childhood refractory epilepsy. More recently, ketogenic diet has been investigated for a number of metabolic, neurodegenerative and neurodevelopmental disorders. In this comprehensive review, we critically examine the potential therapeutic benefits of ketogenic diet and ketogenic agents on neurodegenerative and psychiatric disorders in humans and translationally valid animal models. The preclinical literature provides strong support for the efficacy of ketogenic diet in a variety of diverse animal models of neuropsychiatric disorders. However, the evidence from clinical studies, while encouraging, particularly in Alzheimer's disease, psychotic and autism spectrum disorders, is limited to case studies and small pilot trials. Firm conclusion on the efficacy of ketogenic diet in psychiatric disorders cannot be drawn due to the lack of randomised, controlled clinical trials. The potential mechanisms of action of ketogenic therapy in these disorders with diverse pathophysiology may include energy metabolism, oxidative stress and immune/inflammatory processes. In conclusion, while ketogenic diet and ketogenic substances hold promise pre-clinically in a variety of neurodegenerative and psychiatric disorders, further studies, particularly randomised controlled clinical trials, are warranted to better understand their clinical efficacy and potential side effects.
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Kraeuter AK, Mashavave T, Suvarna A, van den Buuse M, Sarnyai Z. Effects of beta-hydroxybutyrate administration on MK-801-induced schizophrenia-like behaviour in mice. Psychopharmacology (Berl) 2020; 237:1397-1405. [PMID: 31993694 DOI: 10.1007/s00213-020-05467-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 01/21/2020] [Indexed: 12/31/2022]
Abstract
RATIONALE Impaired cerebral glucose metabolism is a core pathological feature of schizophrenia. We recently demonstrated that a ketogenic diet, causing a shift from glycolysis to ketosis, normalized schizophrenia-like behaviours in an acute N-methyl-D-aspartate (NMDA) receptor antagonist model of the illness. Ketogenic diet produces the ketone body, β-hydroxybutyrate (BHB), which may serve as an alternative fuel source in its own right without a strict dietary regime. OBJECTIVE We hypothesized that chronic administration of BHB replicates the therapeutic effects of ketogenic diet in an acute NMDA receptor hypofunction model of schizophrenia in mice. METHODS C57Bl/6 mice were either treated with acute doses of 2 mmol/kg, 10 mmol/kg, or 20 mmol/kg BHB or received daily intraperitoneal injections of 2 mmol/kg BHB or saline for 3 weeks. Behavioural testing assessed the effect of acute challenge with 0.2 mg/kg MK-801 or saline on open field behaviour, social interaction, and prepulse inhibition of startle (PPI). RESULTS Acute BHB administration dose-dependently increased BHB plasma levels, whereas the 2 mmol/kg dose increased plasma glucose levels. The highest acute dose of BHB supressed spontaneous locomotor activity, MK-801-induced locomotor hyperactivity and MK-801-induced disruption of PPI. Chronic BHB treatment normalized MK-801-induced hyperlocomotion, reduction of sociability, and disruption of PPI. CONCLUSION In conclusion, BHB may present a novel treatment option for patients with schizophrenia by providing an alternative fuel source to normalize impaired glucose metabolism in the brain.
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Affiliation(s)
- Ann-Katrin Kraeuter
- Laboratory of Psychiatric Neuroscience, Australian Institute of Tropical Health and Medicine, Douglas, Australia
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
| | - Tadiwa Mashavave
- Laboratory of Psychiatric Neuroscience, Australian Institute of Tropical Health and Medicine, Douglas, Australia
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
| | - Aditya Suvarna
- Laboratory of Psychiatric Neuroscience, Australian Institute of Tropical Health and Medicine, Douglas, Australia
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
| | - Maarten van den Buuse
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia
- School of Psychology and Public Health, La Trobe University, Bundoora, Melbourne, Australia
| | - Zoltán Sarnyai
- Laboratory of Psychiatric Neuroscience, Australian Institute of Tropical Health and Medicine, Douglas, Australia.
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia.
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Kajitani N, Iwata M, Miura A, Tsunetomi K, Yamanashi T, Matsuo R, Nishiguchi T, Fukuda S, Nagata M, Shibushita M, Yamauchi T, Pu S, Shirayama Y, Watanabe K, Kaneko K. Prefrontal cortex infusion of beta-hydroxybutyrate, an endogenous NLRP3 inflammasome inhibitor, produces antidepressant-like effects in a rodent model of depression. Neuropsychopharmacol Rep 2020; 40:157-165. [PMID: 32125791 PMCID: PMC7722664 DOI: 10.1002/npr2.12099] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 12/19/2022] Open
Abstract
Aims Neuroinflammation is deeply related to the pathophysiology of depression. Beta‐hydroxybutyrate (BHB), which is an endogenous ketone body, exerts anti‐inflammatory effects, and peripheral administration of BHB induces antidepressant effects in an animal model of depression; however, it is unclear whether BHB specifically mediates these actions in the brain. Thus, we administered BHB directly into the brain in a rodent model of depression using a chronic unpredictable stress (CUS) paradigm. Methods BHB was continuously microinjected into the prefrontal cortex (PFC) using osmotic pumps for 21 days. Behavioral testing included the forced swim test (FST) and the open field test (OFT); the levels of pro‐inflammatory cytokines, such as interleukin 1β (IL‐1β) and tumor necrosis factor α (TNF‐α), were quantified in the PFC, and the concentration of corticosterone in blood serum was measured. Results BHB administration into the PFC significantly decreased immobility time in the FST, without significantly altering locomotor activity assessed in the OFT. Also, CUS significantly increased the levels of TNF‐α in the PFC and decreased serum corticosterone levels; these changes were attenuated by BHB administration. These findings suggest that a small amount of BHB administered into the PFC directly produces antidepressant effects, possibly through anti‐inflammatory mechanisms, and can improve hypothalamus‐pituitary‐adrenal axis responses. Conclusion BHB may be a novel therapeutic candidate for the treatment of depression based on the neuro‐inflammatory hypothesis, and the PFC is a region implicated in the antidepressant action of BHB. A small amount of beta‐hydroxybutyrate administered into the prefrontal cortex directly produces antidepressant effects, possibly through anti‐inflammatory mechanisms, and can improve hypothalamus‐pituitary‐adrenal axis responses.![]()
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Affiliation(s)
- Naofumi Kajitani
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Masaaki Iwata
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Akihiko Miura
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Kyohei Tsunetomi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Takehiko Yamanashi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Ryoichi Matsuo
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Tsuyoshi Nishiguchi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Saki Fukuda
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Mayu Nagata
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Midori Shibushita
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Takahira Yamauchi
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Shenghong Pu
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Yukihiko Shirayama
- Department of Psychiatry, Teikyo University Chiba Medical Center, Ichihara, Japan
| | | | - Koichi Kaneko
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
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Study of glycation process of human carbonic anhydrase II as well as investigation concerning inhibitory influence of 3-beta-hydroxybutyrate on it. Int J Biol Macromol 2020; 149:443-449. [PMID: 31978481 DOI: 10.1016/j.ijbiomac.2020.01.192] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/12/2020] [Accepted: 01/20/2020] [Indexed: 12/16/2022]
Abstract
Glycation is a non-enzymatic reaction between carbonyl groups in sugar and free amino groups in proteins. This reaction leads to changes in structure and functions of proteins in which the advanced glycation end products (AGEs) are the final outcome and cause many complications in diabetic patients. We herein examined the effect of fasting on the glycation process of human Carbonic anhydrase II under physiological conditions (37 °C and pH 7.4) employing various techniques, including Ultraviolet-visible spectroscopy, fluorescence spectroscopy and CD Spectroscopy. We found an increased 3-beta-hydroxybutyrate upon fasting. We studied various samples of control carbonic anhydrase (without glucose and 3-beta-hydroxybutyrate), carbonic anhydrase with glucose, carbonic anhydrase treated with 3-beta-hydroxybutyrate (BHB) and carbonic anhydrase along with glucose and 3-beta-hydroxybutyrate. The samples were incubated for 35 days under physiological conditions. Our results indicated that 3-beta-hydroxybutyrate inhibited the glycation process, decreased glucose binding to the protein, prevented the formation of AGEs, and modified the enzyme activity. Our findings would open new windows toward the enzymatic procedure which would have profound implication in understanding the diabetes mechanisms.
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Kapogiannis D, Avgerinos KI. Brain glucose and ketone utilization in brain aging and neurodegenerative diseases. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 154:79-110. [PMID: 32739015 PMCID: PMC9989941 DOI: 10.1016/bs.irn.2020.03.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To meet its high energy demands, the brain mostly utilizes glucose. However, the brain has evolved to exploit additional fuels, such as ketones, especially during prolonged fasting. With aging and neurodegenerative diseases (NDDs), the brain becomes inefficient at utilizing glucose due to changes in glia and neurons that involve glucose transport, glycolytic and Krebs cycle enzyme activities, and insulin signaling. Positron emission tomography and magnetic resonance spectroscopy studies have identified glucose metabolism abnormalities in aging, Alzheimer's disease (AD) and other NDDs in vivo. Despite glucose hypometabolism, brain cells can utilize ketones efficiently, thereby providing a rationale for the development of therapeutic ketogenic interventions in AD and other NDDs. This review compares available ketogenic interventions and discusses the potential of the potent oral Ketone Ester for future therapeutic use in AD and other NDDs characterized by inefficient glucose utilization.
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Affiliation(s)
- Dimitrios Kapogiannis
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States.
| | - Konstantinos I Avgerinos
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
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Wu Y, Gong Y, Luan Y, Li Y, Liu J, Yue Z, Yuan B, Sun J, Xie C, Li L, Zhen J, Jin X, Zheng Y, Wang X, Xie L, Wang W. BHBA treatment improves cognitive function by targeting pleiotropic mechanisms in transgenic mouse model of Alzheimer's disease. FASEB J 2019; 34:1412-1429. [PMID: 31914599 DOI: 10.1096/fj.201901984r] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/17/2019] [Accepted: 11/14/2019] [Indexed: 12/19/2022]
Abstract
Accumulation of amyloid β (Aβ) peptide, inflammation, and oxidative stress contribute to Alzheimer's disease (AD) and trigger complex pathogenesis. The ketone body β-hydroxybutyrate (BHBA) is an endogenous metabolic intermediate that protects against stroke and neurodegenerative diseases, but the underlying mechanisms are unclear. The present study aims to elucidate the protective effects of BHBA in the early stage of AD model and investigate the underlying molecular mechanisms. Three-and-half-month-old double-transgenic mice (5XFAD) overexpressing β-amyloid precursor protein (APP) and presenilin-1 (PS1) were used as the AD model. The 5XFAD mice received 1.5 mmol/kg/d BHBA subcutaneously for 28 days. Morris water maze test, nest construction, and passive avoidance experiments were performed to assess the therapeutic effects on AD prevention in vivo, and brain pathology of 5XFAD mice including amyloid plaque deposition and microglia activation were assessed. Gene expression profiles in the cortexes of 5XFAD- and BHBA-treated 5XFAD mice were performed with high-throughput sequencing and bioinformatic analysis. Mouse HT22 cells were treated with 2 mM BHBA to explore its in vitro protective effects of BHBA on hippocampal neurons against Aβ oligomer toxicity, ATP production, ROS generation, and mitochondrial aerobic respiratory function. APP, BACE1, and neprilysin (NEP) expression levels were evaluated in HT22 cells following treatment with BHBA by measuring the presence or absence of G protein-coupled receptor 109A (GPR109A). BHBA improved cognitive function of 5XFAD mice in Morris water maze test, nesting construction and passive avoidance experiments, and attenuated Aβ accumulation and microglia overactivation in the brain. BHBA also enhanced mitochondrial respiratory function of hippocampal neurons and protected it from Aβ toxicity. The enzymes, APP and NEP were regulated by BHBA via G-protein-coupled receptor 109A (GPR109A). Furthermore, RNA sequencing revealed that BHBA-regulated genes mainly annotated in aging, immune system, nervous system, and neurodegenerative diseases. Our data suggested that BHBA confers protection against the AD-like pathological events in the AD mouse model by targeting multiple aspects of AD and it may become a promising candidate for the prevention and treatment of AD.
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Affiliation(s)
- Yancheng Wu
- Innovative Institute of Animal Healthy Breeding, Key Laboratory of Waterfowl Healthy Breeding of Guangdong Province, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China.,College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Yuhong Gong
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Yongxin Luan
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, P.R. China
| | - Yang Li
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Zitong Yue
- Changchun Jida Middle School Experimental School, Changchun, P.R. China
| | - Boyu Yuan
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Jingxuan Sun
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Changxin Xie
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Lijuan Li
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China.,The Second Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Junli Zhen
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China
| | - Xinxin Jin
- College of Veterinary Medicine, Jilin University, Changchun, P.R. China
| | - Yan Zheng
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China
| | - Xiaomin Wang
- Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China
| | - Liwei Xie
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, P.R. China
| | - Wei Wang
- Innovative Institute of Animal Healthy Breeding, Key Laboratory of Waterfowl Healthy Breeding of Guangdong Province, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China.,College of Veterinary Medicine, Jilin University, Changchun, P.R. China.,Department of Neurobiology, Key Laboratory for Neurodegenerative Disorders of the Ministry of Education, Capital Medical University, Beijing, P.R. China
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38
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Camberos-Luna L, Massieu L. Therapeutic strategies for ketosis induction and their potential efficacy for the treatment of acute brain injury and neurodegenerative diseases. Neurochem Int 2019; 133:104614. [PMID: 31785349 DOI: 10.1016/j.neuint.2019.104614] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 12/13/2022]
Abstract
The therapeutic use of ketone bodies (KB) against acute brain injury and neurodegenerative disorders has lately been suggested by many studies. Several mechanisms responsible for the protective action of KB have been described, including metabolic, anti-inflammatory and epigenetic. However, it is still not clear whether a specific mechanism of action can be associated with a particular neurological disorder. Different strategies to induce ketosis including the ketogenic diet (KD), caloric restriction (CR), intermittent fasting (IF), as well as the administration of medium chain triglycerides (MCTs), exogenous ketones or KB derivatives, have been used in animal models of brain injury and in humans. They have shown different degrees of success to prevent neuronal damage, motor alterations and cognitive decline. However, more investigation is needed in order to establish safe protocols for clinical application. Throughout the present review, we describe the different approaches that have been used to elevate blood KB and discuss their effectiveness considering their advantages and limitations, as tested in models of brain injury, neurodegeneration and clinical research. We also describe the mechanisms of action of KB in non-pathologic conditions and in association with their protective effect against neuronal damage in acute neurological disorders and neurodegenerative diseases.
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Affiliation(s)
- Lucy Camberos-Luna
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, CP 04510, Mexico.
| | - Lourdes Massieu
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, CP 04510, Mexico.
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Oh CM, Cho S, Jang JY, Kim H, Chun S, Choi M, Park S, Ko YG. Cardioprotective Potential of an SGLT2 Inhibitor Against Doxorubicin-Induced Heart Failure. Korean Circ J 2019; 49:1183-1195. [PMID: 31456369 PMCID: PMC6875592 DOI: 10.4070/kcj.2019.0180] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 06/27/2019] [Accepted: 07/05/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Recent studies have shown that sodium-glucose co-transporter 2 (SGLT2) inhibitors reduce the risk of heart failure (HF)-associated hospitalization and mortality in patients with diabetes. However, it is not clear whether SGLT2 inhibitors have a cardiovascular benefit in patients without diabetes. We aimed to determine whether empagliflozin (EMPA), an SGLT2 inhibitor, has a protective role in HF without diabetes. METHODS Cardiomyopathy was induced in C57BL/6J mice using intraperitoneal injection of doxorubicin (Dox). Mice with HF were fed a normal chow diet (NCD) or an NCD containing 0.03% EMPA. Then we analyzed their phenotypes and performed in vitro experiments to reveal underlying mechanisms of the EMPA's effects. RESULTS Mice fed NCD with EMPA showed improved heart function and reduced fibrosis. In vitro studies showed similar results. Phloridzin, a non-specific SGLT inhibitor, did not show any protective effect against Dox toxicity in H9C2 cells. SGLT2 inhibitor can cause increase in blood ketone levels. Beta hydroxybutyrate (βOHB), which is well known ketone body associated with SGLT2 inhibitor, showed a protective effect against Dox in H9C2 cells and in Dox-treated mice. These results suggest elevating βOHB might be a convincing mechanism for the protective effects of SGLT2 inhibitor. CONCLUSIONS SGLT2 inhibitors have a protective effect in Dox-induced HF in mice. This implied that SGLT2 inhibitor therapy could be a good treatment strategy even in HF patients without diabetes.
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Affiliation(s)
- Chang Myung Oh
- Division of Endocrinology and Metabolism, CHA Bundang Medical Center, School of Medicine CHA University, Seongnam, Korea
| | - Sungsoo Cho
- Division of Cardiovascular medicine, Department of Internal medicine, Dankook University Hospital, Dankook University School of Medicine, Cheonan, Korea
| | - Ji Yong Jang
- Division of Cardiology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Hyeongseok Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Sukyung Chun
- Division of Endocrinology and Metabolism, CHA Bundang Medical Center, School of Medicine CHA University, Seongnam, Korea
| | - Minkyung Choi
- Division of Endocrinology and Metabolism, CHA Bundang Medical Center, School of Medicine CHA University, Seongnam, Korea
| | - Sangkyu Park
- Department of Biochemistry, College of Medicine, Catholic Kwandong University, Gangneung, Korea.
| | - Young Guk Ko
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea.
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40
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Hu E, Du H, Zhu X, Wang L, Shang S, Wu X, Lu H, Lu X. Beta-hydroxybutyrate Promotes the Expression of BDNF in Hippocampal Neurons under Adequate Glucose Supply. Neuroscience 2018; 386:315-325. [PMID: 29966721 DOI: 10.1016/j.neuroscience.2018.06.036] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 06/17/2018] [Accepted: 06/21/2018] [Indexed: 01/09/2023]
Abstract
Neurobiological evidence suggests that the ketone metabolite β-hydroxybutyrate (BHBA) exerts many neuroprotective functions for the brain. The previous study revealed that BHBA could promote the expression of brain-derived neurotrophic factor (BDNF) at glucose inadequate condition. Here we demonstrated that BHBA administration induced the expression of BDNF in the hippocampus of mice fed with normal diet. In vitro experiment results also showed that 0.02-2 mM BHBA significantly increased BDNF expression in both the primary hippocampal neurons and the hippocampus neuron cell line HT22 under adequate glucose supply. Bdnf transcription induced by BHBA stimulus was mediated through the cAMP/PKA-triggered phosphorylation of CREB (S133) and the subsequent up-regulation of histone H3 Lysine 27 acetylation (H3K27ac) binding at Bdnf promoters I, II, IV, and VI. Moreover, BHBA stimulus induced a decrease in tri-methylation of H3K27 (H3K27me3) binding at the Bdnf promoters II and VI and the elevation of H3K27me3-specific demethylase JMJD3, which also contributed to the activation of Bdnf transcription. These results demonstrated that BHBA within the physiological range could promote BDNF expression in neurons via a novel signaling function. Moreover, BHBA might possess more broad epigenetic regulatory activities, which affected both the acetylation and demethylation of H3K27. Our findings reinforce the beneficial effect of BHBA on the central nervous system (CNS) and suggest that BHBA administration with no need for energy restriction might also be a promising intervention to improve the neuronal activity and ameliorate the degeneration of CNS.
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Affiliation(s)
- Erling Hu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Huan Du
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Xinliang Zhu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Leilei Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Sen Shang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Xingjuan Wu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Haixia Lu
- Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Institute of Neurobiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Centre, Xi'an 710061, Shaanxi, PR China.
| | - Xiaoyun Lu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China.
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41
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Yu Y, Yu Y, Zhang Y, Zhang Z, An W, Zhao X. Treatment with D-β-hydroxybutyrate protects heart from ischemia/reperfusion injury in mice. Eur J Pharmacol 2018; 829:121-128. [PMID: 29679541 DOI: 10.1016/j.ejphar.2018.04.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 12/20/2022]
Abstract
The present study was designed to examine the protection of D-β-hydroxybutyrate (BHB) against ischemia/reperfusion (I/R) injury in heart and investigate its underlying mechanism. Male adult mice were exposed to 30 min of ischemia and 24 h of reperfusion. Osmotic pumps were implanted subcutaneously 5 min before reperfusion for continuous delivery of the exogenous BHB (1.6 mmol/kg/24 h). Treatment with BHB reduced infarct size and levels of cardiac troponin I, creatine kinase and lactate dehydrogenase in serum, attenuated apoptosis in myocardium, and preserved cardiac function of I/R mice. Importantly, treatment of I/R mice with BHB promoted autophagic flux, evidenced by reduced the ratio of LC3-II/LC3-I and protein expression of p62 and enhanced protein expression of lysosome associated membrane protein-2 (Lamp2) in myocardium. Treatment of I/R mice with BHB reduced mitochondrial formation of reactive oxygen species, enhanced adenosine triphosphate production, attenuated mitochondrial swelling, and partly restored mitochondrial membrane potential in myocardium. Furthermore, treatment of I/R mice with BHB abated oxidative stress and attenuated endoplasmic reticulum stress in myocardium. Our results indicated that treatment with exogenous BHB protected heart from I/R injury in mice.
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Affiliation(s)
- Yongsheng Yu
- Department of Cardiovasology, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai 200433, China
| | - Yunhua Yu
- Department of Geriatrics, Fuzhou General Hospital, Fujian Medical University, Fuzhou, China
| | - Yuefan Zhang
- Department of Pharmacology, College of Pharmacy, Second Military Medical University, Shanghai, China
| | - Zhigang Zhang
- Department of Cardiology, Fuzhou General Hospital, Fujian Medical University, Fuzhou, China
| | - Weishuai An
- Department of Cardiovasology, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai 200433, China
| | - Xianxian Zhao
- Department of Cardiovasology, Changhai Hospital, Second Military Medical University, Changhai Road 168, Shanghai 200433, China.
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42
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Abstract
Accumulating research in rodents and humans indicates that exercise benefits brain function and may prevent or delay onset of neurodegenerative conditions. In particular, exercise modifies the structure and function of the hippocampus, a brain area important for learning and memory. This review addresses the central and peripheral mechanisms underlying the beneficial effects of exercise on the hippocampus. We focus on running-induced changes in adult hippocampal neurogenesis, neural circuitry, neurotrophins, synaptic plasticity, neurotransmitters, and vasculature. The role of peripheral factors in hippocampal plasticity is also highlighted. We discuss recent evidence that systemic factors released from peripheral organs such as muscle (myokines), liver (hepatokines), and adipose tissue (adipokines) during exercise contribute to hippocampal neurotrophin and neurogenesis levels, and memory function. A comprehensive understanding of the body-brain axis is needed to elucidate how exercise improves hippocampal plasticity and cognition.
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Affiliation(s)
- C'iana Cooper
- Neuroplasticity and Behavior Unit, Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Biomedical Research Center, Baltimore, Maryland 21224
| | - Hyo Youl Moon
- Neuroplasticity and Behavior Unit, Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Biomedical Research Center, Baltimore, Maryland 21224
- Institute of Sport Science, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Henriette van Praag
- Neuroplasticity and Behavior Unit, Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Biomedical Research Center, Baltimore, Maryland 21224
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43
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Tognini P, Murakami M, Liu Y, Eckel-Mahan KL, Newman JC, Verdin E, Baldi P, Sassone-Corsi P. Distinct Circadian Signatures in Liver and Gut Clocks Revealed by Ketogenic Diet. Cell Metab 2017; 26:523-538.e5. [PMID: 28877456 DOI: 10.1016/j.cmet.2017.08.015] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 05/04/2017] [Accepted: 08/15/2017] [Indexed: 12/22/2022]
Abstract
The circadian clock orchestrates rhythms in physiology and behavior, allowing organismal adaptation to daily environmental changes. While food intake profoundly influences diurnal rhythms in the liver, how nutritional challenges are differentially interpreted by distinct tissue-specific clocks remains poorly explored. Ketogenic diet (KD) is considered to have metabolic and therapeutic value, though its impact on circadian homeostasis is virtually unknown. We show that KD has profound and differential effects on liver and intestine clocks. Specifically, the amplitude of clock-controlled genes and BMAL1 chromatin recruitment are drastically altered by KD in the liver, but not in the intestine. KD induces nuclear accumulation of PPARα in both tissues but with different circadian phase. Also, gut and liver clocks respond differently to carbohydrate supplementation to KD. Importantly, KD induces serum and intestinal β-hydroxyl-butyrate levels to robustly oscillate in a circadian manner, an event coupled to tissue-specific cyclic histone deacetylase (HDAC) activity and histone acetylation.
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Affiliation(s)
- Paola Tognini
- Center for Epigenetics and Metabolism, Department of Biological Chemistry, U1233 INSERM, University of California, Irvine, Irvine, CA, USA
| | - Mari Murakami
- Center for Epigenetics and Metabolism, Department of Biological Chemistry, U1233 INSERM, University of California, Irvine, Irvine, CA, USA
| | - Yu Liu
- Institute for Genomics and Bioinformatics, School of Information and Computer Sciences, University of California, Irvine, Irvine, CA, USA
| | - Kristin L Eckel-Mahan
- Center for Epigenetics and Metabolism, Department of Biological Chemistry, U1233 INSERM, University of California, Irvine, Irvine, CA, USA; Center for Metabolic and Degenerative Diseases, Institute of Molecular Medicine, University of Texas Health Sciences Center, Houston, TX, USA
| | - John C Newman
- Gladstone Institutes, University of California, San Francisco, 1650 Owens Street, San Francisco, CA 94158, USA
| | - Eric Verdin
- Gladstone Institutes, University of California, San Francisco, 1650 Owens Street, San Francisco, CA 94158, USA
| | - Pierre Baldi
- Institute for Genomics and Bioinformatics, School of Information and Computer Sciences, University of California, Irvine, Irvine, CA, USA
| | - Paolo Sassone-Corsi
- Center for Epigenetics and Metabolism, Department of Biological Chemistry, U1233 INSERM, University of California, Irvine, Irvine, CA, USA.
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Loos B, Klionsky DJ, Wong E. Augmenting brain metabolism to increase macro- and chaperone-mediated autophagy for decreasing neuronal proteotoxicity and aging. Prog Neurobiol 2017; 156:90-106. [DOI: 10.1016/j.pneurobio.2017.05.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 12/14/2022]
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45
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Yamanashi T, Iwata M, Kamiya N, Tsunetomi K, Kajitani N, Wada N, Iitsuka T, Yamauchi T, Miura A, Pu S, Shirayama Y, Watanabe K, Duman RS, Kaneko K. Beta-hydroxybutyrate, an endogenic NLRP3 inflammasome inhibitor, attenuates stress-induced behavioral and inflammatory responses. Sci Rep 2017; 7:7677. [PMID: 28794421 PMCID: PMC5550422 DOI: 10.1038/s41598-017-08055-1] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 07/06/2017] [Indexed: 12/28/2022] Open
Abstract
Neuro-inflammation has been shown to play a critical role in the development of depression. Beta-hydroxybutyrate (BHB) is a ketone body and has recently been reported to exert anti-inflammatory effects via inhibition of NLRP3 inflammasome. Here, we investigated the potential antidepressant and anti-inflammatory effects of BHB on rats exposed to acute and chronic stress. We examined the influence of repeated BHB administration on depressive and anxiety behaviors in a rodent model of chronic unpredictable stress (CUS). Additionally, the influence of acute immobilization (IMM) stress and single BHB administration on hippocampal interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) were assessed. Repeated administration of BHB attenuated CUS-induced depressive- and anxiety-related behaviors. IMM stress increased levels of IL-1β in the hippocampus, while a single pre-administration of BHB attenuated this increase. Although no effect was observed on hippocampal TNF-α levels after 1 h of IMM stress, a single BHB pre-administration reduced hippocampal TNF-α. Our previous report showed that the release of IL-1β and TNF-α caused by stress is tightly regulated by NLRP3 inflammasome. These findings demonstrate that BHB exerts antidepressant-like effects, possibly by inhibiting NLRP3-induced neuro-inflammation in the hippocampus, and that BHB may be a novel therapeutic candidate for the treatment of stress-related mood disorders.
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Affiliation(s)
- Takehiko Yamanashi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Masaaki Iwata
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan.
| | - Naho Kamiya
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Kyohei Tsunetomi
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Naofumi Kajitani
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Nodoka Wada
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Takahiro Iitsuka
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Takahira Yamauchi
- Department of Psychiatry, Nara Medical University School of Medicine, Kashihara, Japan
| | - Akihiko Miura
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Shenghong Pu
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Yukihiko Shirayama
- Department of Psychiatry, Teikyo University Chiba Medical Center, Ichihara, Japan
| | | | - Ronald S Duman
- Departments of Psychiatry and Neurobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Koichi Kaneko
- Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Yonago, Japan
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Kong G, Huang Z, Ji W, Wang X, Liu J, Wu X, Huang Z, Li R, Zhu Q. The Ketone Metabolite β-Hydroxybutyrate Attenuates Oxidative Stress in Spinal Cord Injury by Suppression of Class I Histone Deacetylases. J Neurotrauma 2017; 34:2645-2655. [PMID: 28683591 DOI: 10.1089/neu.2017.5192] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The ketone metabolite β-hydroxybutyrate (βOHB), is reported to be neuroprotective after spinal cord injury (SCI) in rats, but the underlying mechanism remains unknown. The present study aims to investigate effects of βOHB on suppression of oxidative stress and inhibition of class I histone deacetylases (HDACs) in in vivo and in vitro models. Rats were fed with ketogenic diet (KD) or standard diet (SD) for 3 weeks. A C5 hemi-contusion injury was applied to these animals on the 14th day of experiment, and spinal cord samples were harvested on the 1st, 3rd and 7th days after SCI, respectively. The blood ketone levels were significantly higher in the KD groups. KD reduced oxidative stress markers and reactive oxygen species (ROS) products, downregulated the expression of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX)2 and NOX4, and upregulated the expression of forkhead box group O (FOXO)3a, mitochondrial superoxide dismutase (MnSOD), and catalase after SCI. The in vitro study, performed on PC12 cells, indicated that βOHB inhibited H2O2-induced ROS production, decreased NOX2 and NOX4 protein levels, and upregulated FOXO3a, MnSOD, and catalase levels in a dose-dependent manner, which was consistent with the in vivo results. The ketone metabolite βOHB inhibited HDAC1, HDAC2, and HDAC3 activity, but not HDAC8 in SCI rats and PC12 cells. Depletion of HDAC1 or HDAC2 with small interfering RNA (siRNA) attenuated H2O2-induced ROS production and protein carbonylation and elevated FOXO3a protein levels, meanwhile reducing NOX2 and NOX4 protein expression in PC12 cells. Our results indicate that the ketone metabolite βOHB attenuates oxidative stress in SCI by inhibition of class I HDACs, and selected suppression of HDAC1 or HDAC2 regulates FOXO3a, NOX2, and NOX4 expression. Therefore, the ketone metabolite βOHB may be a novel promising therapeutic agent for SCI.
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Affiliation(s)
- Ganggang Kong
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Zucheng Huang
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Wei Ji
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Xiaomeng Wang
- 2 Department of Spinal Surgery, Longyan First Hospital , Fujian, China
| | - Junhao Liu
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Xiuhua Wu
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Zhiping Huang
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Rong Li
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
| | - Qingan Zhu
- 1 Department of Spinal Surgery, Nanfang Hospital, Southern Medical University , Guangzhou, China
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Xie Z, Zhang D, Chung D, Tang Z, Huang H, Dai L, Qi S, Li J, Colak G, Chen Y, Xia C, Peng C, Ruan H, Kirkey M, Wang D, Jensen LM, Kwon OK, Lee S, Pletcher SD, Tan M, Lombard DB, White KP, Zhao H, Li J, Roeder RG, Yang X, Zhao Y. Metabolic Regulation of Gene Expression by Histone Lysine β-Hydroxybutyrylation. Mol Cell 2017; 62:194-206. [PMID: 27105115 DOI: 10.1016/j.molcel.2016.03.036] [Citation(s) in RCA: 390] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 03/03/2016] [Accepted: 03/29/2016] [Indexed: 12/16/2022]
Abstract
Here we report the identification and verification of a β-hydroxybutyrate-derived protein modification, lysine β-hydroxybutyrylation (Kbhb), as a new type of histone mark. Histone Kbhb marks are dramatically induced in response to elevated β-hydroxybutyrate levels in cultured cells and in livers from mice subjected to prolonged fasting or streptozotocin-induced diabetic ketoacidosis. In total, we identified 44 histone Kbhb sites, a figure comparable to the known number of histone acetylation sites. By ChIP-seq and RNA-seq analysis, we demonstrate that histone Kbhb is a mark enriched in active gene promoters and that the increased H3K9bhb levels that occur during starvation are associated with genes upregulated in starvation-responsive metabolic pathways. Histone β-hydroxybutyrylation thus represents a new epigenetic regulatory mark that couples metabolism to gene expression, offering a new avenue to study chromatin regulation and diverse functions of β-hydroxybutyrate in the context of important human pathophysiological states, including diabetes, epilepsy, and neoplasia.
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Affiliation(s)
- Zhongyu Xie
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Di Zhang
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Dongjun Chung
- Department of Biostatistics, Yale School of Public Health, New Haven, CT 06520, USA; Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Zhanyun Tang
- Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10065, USA
| | - He Huang
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Lunzhi Dai
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Shankang Qi
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Jingya Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Gozde Colak
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Yue Chen
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Chunmei Xia
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Chao Peng
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Haibin Ruan
- Section of Comparative Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Matt Kirkey
- Institute for Genomics and Systems Biology, The University of Chicago, Chicago, IL 60637, USA
| | - Danli Wang
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Lindy M Jensen
- Department of Molecular and Integrative Physiology and Geriatrics Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Oh Kwang Kwon
- BK21 Plus KNU Multi-Omics based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sangkyu Lee
- BK21 Plus KNU Multi-Omics based Creative Drug Research Team, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Scott D Pletcher
- Department of Molecular and Integrative Physiology and Geriatrics Center, University of Michigan, Ann Arbor, MI 48109, USA
| | - Minjia Tan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - David B Lombard
- Department of Pathology and Institute of Gerontology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Kevin P White
- Institute for Genomics and Systems Biology, The University of Chicago, Chicago, IL 60637, USA
| | - Hongyu Zhao
- Department of Biostatistics, Yale School of Public Health, New Haven, CT 06520, USA; Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT 06511, USA; Department of Genetics, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Robert G Roeder
- Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10065, USA
| | - Xiaoyong Yang
- Section of Comparative Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA.
| | - Yingming Zhao
- Ben May Department for Cancer Research, The University of Chicago, Chicago, IL 60637, USA.
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Neuroketotherapeutics: A modern review of a century-old therapy. Neurochem Int 2017; 117:114-125. [PMID: 28579059 PMCID: PMC5711637 DOI: 10.1016/j.neuint.2017.05.019] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 05/25/2017] [Accepted: 05/30/2017] [Indexed: 01/18/2023]
Abstract
Neuroketotherapeutics represent a class of bioenergetic medicine therapies that feature the induction of ketosis. These therapies include medium-chain triglyceride supplements, ketone esters, fasting, strenuous exercise, the modified Atkins diet, and the classic ketogenic diet. Extended experience reveals persons with epilepsy, especially pediatric epilepsy, benefit from ketogenic diets although the mechanisms that underlie its effects remain unclear. Data indicate ketotherapeutics enhance mitochondrial respiration, promote neuronal long-term potentiation, increase BDNF expression, increase GPR signaling, attenuate oxidative stress, reduce inflammation, and alter protein post-translational modifications via lysine acetylation and β-hydroxybutyrylation. These properties have further downstream implications involving Akt, PLCγ, CREB, Sirtuin, and mTORC pathways. Further studies of neuroketotherapeutics will enhance our understanding of ketone body molecular biology, and reveal novel central nervous system therapeutic applications.
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49
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Qian J, Zhu W, Lu M, Ni B, Yang J. D-β-hydroxybutyrate promotes functional recovery and relieves pain hypersensitivity in mice with spinal cord injury. Br J Pharmacol 2017; 174:1961-1971. [PMID: 28320049 DOI: 10.1111/bph.13788] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 03/05/2017] [Accepted: 03/11/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Spinal cord injury (SCI) leads to severe motor and sensory dysfunction and significantly reduces the quality of life. The aim of the present work was to investigate the effect of administration of exogenous D-β-hydroxybutyrate (DBHB) on functional recovery and neuropathic pain in spinal cord-injured mice. EXPERIMENTAL APPROACH Mice were given a moderate-severe thoracic spinal contusion injury at the T9-10 level and treated with exogenous DBHB. KEY RESULTS Treatment of SCI mice with DBHB markedly improved locomotor function and relieved SCI-induced hypersensitivities to mechanical and thermal stimulation. DBHB treatment partly prevented the SCI-induced loss of motor neurons and suppressed microglial and glial activation. DBHB treatment enhanced histone acetylation and up-regulated expression of the transcription factor FOXO3a, catalase and SOD2 in injured region of SCI mice. DBHB treatment suppressed SCI-induced NLRP3 inflammasome activation and reduced protein expression of IL-1β and IL-18. In addition, DBHB treatment improved mitochondrial function and abated oxidative stress following SCI. CONCLUSIONS AND IMPLICATIONS DBHB promoted functional recovery and relieved pain hypersensitivity in mice with SCI, possibly through inhibition of histone deacetylation and NLRP3 inflammasome activation and preservation of mitochondrial function. DBHB could thus be envisaged as a potential use of interventions for SCI but remains to be tested in humans.
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Affiliation(s)
- Jiao Qian
- Department of Pharmacy, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wenjun Zhu
- Department of Spine Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ming Lu
- Department of Spine Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Bin Ni
- Department of Spine Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jun Yang
- Department of Spine Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
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50
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A ketogenic diet rescues hippocampal memory defects in a mouse model of Kabuki syndrome. Proc Natl Acad Sci U S A 2016; 114:125-130. [PMID: 27999180 DOI: 10.1073/pnas.1611431114] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Kabuki syndrome is a Mendelian intellectual disability syndrome caused by mutations in either of two genes (KMT2D and KDM6A) involved in chromatin accessibility. We previously showed that an agent that promotes chromatin opening, the histone deacetylase inhibitor (HDACi) AR-42, ameliorates the deficiency of adult neurogenesis in the granule cell layer of the dentate gyrus and rescues hippocampal memory defects in a mouse model of Kabuki syndrome (Kmt2d+/βGeo). Unlike a drug, a dietary intervention could be quickly transitioned to the clinic. Therefore, we have explored whether treatment with a ketogenic diet could lead to a similar rescue through increased amounts of beta-hydroxybutyrate, an endogenous HDACi. Here, we report that a ketogenic diet in Kmt2d+/βGeo mice modulates H3ac and H3K4me3 in the granule cell layer, with concomitant rescue of both the neurogenesis defect and hippocampal memory abnormalities seen in Kmt2d+/βGeo mice; similar effects on neurogenesis were observed on exogenous administration of beta-hydroxybutyrate. These data suggest that dietary modulation of epigenetic modifications through elevation of beta-hydroxybutyrate may provide a feasible strategy to treat the intellectual disability seen in Kabuki syndrome and related disorders.
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