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Acuña-Catalán D, Shah S, Wehrfritz C, Nomura M, Acevedo A, Olmos C, Quiroz G, Huerta H, Bons J, Ampuero E, Wyneken U, Sanhueza M, Arancibia F, Contreras D, Cárdenas JC, Morales B, Schilling B, Newman JC, González-Billault C. Ketogenic diet administration later in life improves memory by modifying the synaptic cortical proteome via the PKA signaling pathway in aging mice. Cell Rep Med 2024; 5:101593. [PMID: 38843842 DOI: 10.1016/j.xcrm.2024.101593] [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: 09/14/2023] [Revised: 02/26/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
Aging compromises brain function leading to cognitive decline. A cyclic ketogenic diet (KD) improves memory in aged mice after long-term administration; however, short-term effects later in life and the molecular mechanisms that govern such changes remain unclear. Here, we explore the impact of a short-term KD treatment starting at elderly stage on brain function of aged mice. Behavioral testing and long-term potentiation (LTP) recordings reveal that KD improves working memory and hippocampal LTP. Furthermore, the synaptosome proteome of aged mice fed a KD long-term evidence changes predominantly at the presynaptic compartment associated to the protein kinase A (PKA) signaling pathway. These findings were corroborated in vivo by western blot analysis, with high BDNF abundance and PKA substrate phosphorylation. Overall, we show that a KD modifies brain function even when it is administered later in life and recapitulates molecular features of long-term administration, including the PKA signaling pathway, thus promoting synaptic plasticity at advanced age.
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Affiliation(s)
- Diego Acuña-Catalán
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Samah Shah
- The Buck Institute for Research on Aging, Novato, CA, USA
| | | | | | - Alejandro Acevedo
- Institute of Nutrition and Food Technology (INTA), Universidad de Chile, Santiago, Chile
| | - Cristina Olmos
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Gabriel Quiroz
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Hernán Huerta
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Center for Integrative Biology, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Joanna Bons
- The Buck Institute for Research on Aging, Novato, CA, USA
| | - Estibaliz Ampuero
- Neurobiology of Behavior Laboratory, Department of Biology, Universidad de Santiago de Chile, Santiago, Chile
| | - Ursula Wyneken
- IMPACT, Center for Interventional Medicine for Precision and Advanced Cellular Therapy, and Faculty of Medicine, Universidad de Los Andes, Santiago, Chile
| | - Magdalena Sanhueza
- Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Felipe Arancibia
- Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Darwin Contreras
- Laboratory of Neuroscience, Faculty of Chemistry and Biology, Universidad de Santiago de Chile, Santiago, Chile
| | - Julio César Cárdenas
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile; The Buck Institute for Research on Aging, Novato, CA, USA; Center for Integrative Biology, Faculty of Sciences, Universidad Mayor, Santiago, Chile; Department of Chemistry and Biochemistry and Center for Aging and Longevity Studies University of California, Santa Barbara, CA, USA
| | - Bernardo Morales
- Laboratory of Neuroscience, Faculty of Chemistry and Biology, Universidad de Santiago de Chile, Santiago, Chile
| | | | - John C Newman
- The Buck Institute for Research on Aging, Novato, CA, USA
| | - Christian González-Billault
- Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile; The Buck Institute for Research on Aging, Novato, CA, USA; Institute of Nutrition and Food Technology (INTA), Universidad de Chile, Santiago, Chile; Department of Neurosciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.
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Hannaian SJ, Lov J, Cheng-Boivin Z, Abou Sawan S, Hodson N, Gentil BJ, Morais JA, Churchward-Venne TA. Acute effects of a ketone monoester, whey protein, or their coingestion on mTOR trafficking and protein-protein colocalization in human skeletal muscle. Am J Physiol Cell Physiol 2024; 326:C1769-C1775. [PMID: 38682238 DOI: 10.1152/ajpcell.00207.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/22/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
We recently demonstrated that acute oral ketone monoester intake induces a stimulation of postprandial myofibrillar protein synthesis rates comparable to that elicited following the ingestion of 10 g whey protein or their coingestion. The present investigation aimed to determine the acute effects of ingesting a ketone monoester, whey protein, or their coingestion on mechanistic target of rapamycin (mTOR)-related protein-protein colocalization and intracellular trafficking in human skeletal muscle. In a randomized, double-blind, parallel group design, 36 healthy recreationally active young males (age: 24.2 ± 4.1 yr) ingested either: 1) 0.36 g·kg-1 bodyweight of the ketone monoester (R)-3-hydroxybutyl (R)-3-hydroxybutyrate (KET), 2) 10 g whey protein (PRO), or 3) the combination of both (KET + PRO). Muscle biopsies were obtained in the overnight postabsorptive state (basal conditions), and at 120 and 300 min in the postprandial period for immunofluorescence assessment of protein translocation and colocalization of mTOR-related signaling molecules. All treatments resulted in a significant (Interaction: P < 0.0001) decrease in tuberous sclerosis complex 2 (TSC2)-Ras homolog enriched in brain (Rheb) colocalization at 120 min versus basal; however, the decrease was sustained at 300 min versus basal (P < 0.0001) only in KET + PRO. PRO and KET + PRO increased (Interaction: P < 0.0001) mTOR-Rheb colocalization at 120 min versus basal; however, KET + PRO resulted in a sustained increase in mTOR-Rheb colocalization at 300 min that was greater than KET and PRO. Treatment intake increased mTOR-wheat germ agglutinin (WGA) colocalization at 120 and 300 min (Time: P = 0.0031), suggesting translocation toward the fiber periphery. These findings demonstrate that ketone monoester intake can influence the spatial mechanisms involved in the regulation of mTORC1 in human skeletal muscle.NEW & NOTEWORTHY We explored the effects of a ketone monoester (KET), whey protein (PRO), or their coingestion (KET + PRO) on mTOR-related protein-protein colocalization and intracellular trafficking in human muscle. All treatments decreased TSC2-Rheb colocalization at 120 minutes; however, KET + PRO sustained the decrease at 300 min. Only PRO and KET + PRO increased mTOR-Rheb colocalization; however, the increase at 300 min was greater in KET + PRO. Treatment intake increased mTOR-WGA colocalization, suggesting translocation to the fiber periphery. Ketone bodies influence the spatial regulation of mTOR.
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Affiliation(s)
- Sarkis J Hannaian
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Jamie Lov
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
| | - Zacharie Cheng-Boivin
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
| | | | - Nathan Hodson
- Department of Sport and Exercise Science, Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom
| | - Benoit J Gentil
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - José A Morais
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Department of Medicine, Division of Geriatric Medicine, McGill University, Montreal, Quebec, Canada
| | - Tyler A Churchward-Venne
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec, Canada
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
- Department of Medicine, Division of Geriatric Medicine, McGill University, Montreal, Quebec, Canada
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3
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Cardim-Pires TR, de Rus Jacquet A, Cicchetti F. Healthy blood, healthy brain: a window into understanding and treating neurodegenerative diseases. J Neurol 2024; 271:3682-3689. [PMID: 38607433 DOI: 10.1007/s00415-024-12337-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024]
Abstract
Our limited understanding of complex neurodegenerative disorders has held us back on the development of efficient therapies. While several approaches are currently being considered, it is still unclear what will be most successful. Among the latest and more novel ideas, the concept of blood or plasma transfusion from young healthy donors to diseased patients is gaining momentum and attracting attention beyond the scientific arena. While young or healthy blood is enriched with protective and restorative components, blood from older subjects may accumulate neurotoxic agents or be impoverished of beneficial factors. In this commentary, we present an overview of the compelling evidence collected in various animal models of brain diseases (e.g., Alzheimer, Parkinson, Huntington) to the actual clinical trials that have been conducted to test the validity of blood-related treatments in neurodegenerative diseases and argue in favor of such approach.
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Affiliation(s)
- Thyago R Cardim-Pires
- Centre de Recherche du CHU de Québec, Université Laval, Axe Neurosciences, T2-07, 2705, Boulevard Laurier, Québec, QC, G1V 4G2, Canada
| | - Aurélie de Rus Jacquet
- Centre de Recherche du CHU de Québec, Université Laval, Axe Neurosciences, T2-07, 2705, Boulevard Laurier, Québec, QC, G1V 4G2, Canada
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1K 0A6, Canada
| | - Francesca Cicchetti
- Centre de Recherche du CHU de Québec, Université Laval, Axe Neurosciences, T2-07, 2705, Boulevard Laurier, Québec, QC, G1V 4G2, Canada.
- Département de Psychiatrie & Neurosciences, Université Laval, Québec, QC, G1K 0A6, Canada.
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Zhang H, Muhetarijiang M, Chen RJ, Hu X, Han J, Zheng L, Chen T. Mitochondrial Dysfunction: A Roadmap for Understanding and Tackling Cardiovascular Aging. Aging Dis 2024:AD.2024.0058. [PMID: 38739929 DOI: 10.14336/ad.2024.0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 05/08/2024] [Indexed: 05/16/2024] Open
Abstract
Cardiovascular aging is a progressive remodeling process constituting a variety of cellular and molecular alterations that are closely linked to mitochondrial dysfunction. Therefore, gaining a deeper understanding of the changes in mitochondrial function during cardiovascular aging is crucial for preventing cardiovascular diseases. Cardiac aging is accompanied by fibrosis, cardiomyocyte hypertrophy, metabolic changes, and infiltration of immune cells, collectively contributing to the overall remodeling of the heart. Similarly, during vascular aging, there is a profound remodeling of blood vessel structure. These remodeling present damage to endothelial cells, increased vascular stiffness, impaired formation of new blood vessels (angiogenesis), the development of arteriosclerosis, and chronic vascular inflammation. This review underscores the role of mitochondrial dysfunction in cardiac aging, exploring its impact on fibrosis and myocardial alterations, metabolic remodeling, immune response remodeling, as well as in vascular aging in the heart. Additionally, we emphasize the significance of mitochondria-targeted therapies in preventing cardiovascular diseases in the elderly.
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Affiliation(s)
- Han Zhang
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Mairedan Muhetarijiang
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ryan J Chen
- School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaosheng Hu
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jie Han
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Liangrong Zheng
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ting Chen
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Key Laboratory of Precision Medicine for Atherosclerotic Diseases of Zhejiang Province, Affiliated First Hospital of Ningbo University, Ningbo, China
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Gopalasingam N, Moeslund N, Christensen KH, Berg-Hansen K, Seefeldt J, Homilius C, Nielsen EN, Dollerup MR, Alstrup Olsen AK, Johannsen M, Boedtkjer E, Møller N, Eiskjær H, Gormsen LC, Nielsen R, Wiggers H. Enantiomer-Specific Cardiovascular Effects of the Ketone Body 3-Hydroxybutyrate. J Am Heart Assoc 2024; 13:e033628. [PMID: 38563382 DOI: 10.1161/jaha.123.033628] [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: 11/21/2023] [Accepted: 02/16/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND The ketone body 3-hydroxybutyrate (3-OHB) increases cardiac output (CO) by 35% to 40% in healthy people and people with heart failure. The mechanisms underlying the effects of 3-OHB on myocardial contractility and loading conditions as well as the cardiovascular effects of its enantiomeric forms, D-3-OHB and L-3-OHB, remain undetermined. METHODS AND RESULTS Three groups of 8 pigs each underwent a randomized, crossover study. The groups received 3-hour infusions of either D/L-3-OHB (racemic mixture), 100% L-3-OHB, 100% D-3-OHB, versus an isovolumic control. The animals were monitored with pulmonary artery catheter, left ventricle pressure-volume catheter, and arterial and coronary sinus blood samples. Myocardial biopsies were evaluated with high-resolution respirometry, coronary arteries with isometric myography, and myocardial kinetics with D-[11C]3-OHB and L-[11C]3-OHB positron emission tomography. All three 3-OHB infusions increased 3-OHB levels (P<0.001). D/L-3-OHB and L-3-OHB increased CO by 2.7 L/min (P<0.003). D-3-OHB increased CO nonsignificantly (P=0.2). Circulating 3-OHB levels correlated with CO for both enantiomers (P<0.001). The CO increase was mediated through arterial elastance (afterload) reduction, whereas contractility and preload were unchanged. Ex vivo, D- and L-3-OHB dilated coronary arteries equally. The mitochondrial respiratory capacity remained unaffected. The myocardial 3-OHB extraction increased only during the D- and D/L-3-OHB infusions. D-[11C]3-OHB showed rapid cardiac uptake and metabolism, whereas L-[11C]3-OHB demonstrated much slower pharmacokinetics. CONCLUSIONS 3-OHB increased CO by reducing afterload. L-3-OHB exerted a stronger hemodynamic response than D-3-OHB due to higher circulating 3-OHB levels. There was a dissocitation between the myocardial metabolism and hemodynamic effects of the enantiomers, highlighting L-3-OHB as a potent cardiovascular agent with strong hemodynamic effects.
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Affiliation(s)
- Nigopan Gopalasingam
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
- Department of Clinical Medicine Aarhus University Aarhus Denmark
- Department of Cardiology Gødstrup Hospital Herning Denmark
| | - Niels Moeslund
- Department of Clinical Medicine Aarhus University Aarhus Denmark
- Department of Heart, Lung and Vascular Surgery Aarhus University Hospital Aarhus Denmark
| | - Kristian Hylleberg Christensen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
- Department of Clinical Medicine Aarhus University Aarhus Denmark
| | - Kristoffer Berg-Hansen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
- Department of Clinical Medicine Aarhus University Aarhus Denmark
| | - Jacob Seefeldt
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
- Department of Clinical Medicine Aarhus University Aarhus Denmark
| | | | - Erik Nguyen Nielsen
- Department of Nuclear Medicine and PET Aarhus University Hospital Aarhus Denmark
| | | | - Aage K Alstrup Olsen
- Department of Clinical Medicine Aarhus University Aarhus Denmark
- Department of Nuclear Medicine and PET Aarhus University Hospital Aarhus Denmark
| | - Mogens Johannsen
- Department of Forensic Medicine Aarhus University Aarhus Denmark
| | - Ebbe Boedtkjer
- Department of Biomedicine Aarhus University Aarhus Denmark
| | - Niels Møller
- Department of Endocrinology and Metabolism Aarhus University Aarhus Denmark
| | - Hans Eiskjær
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
| | | | - Roni Nielsen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
| | - Henrik Wiggers
- Department of Cardiology Aarhus University Hospital Aarhus Denmark
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Al-Kuraishy HM, Jabir MS, Albuhadily AK, Al-Gareeb AI, Jawad SF, Swelum AA, Hadi NR. Role of ketogenic diet in neurodegenerative diseases focusing on Alzheimer diseases: The guardian angle. Ageing Res Rev 2024; 95:102233. [PMID: 38360180 DOI: 10.1016/j.arr.2024.102233] [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: 02/01/2024] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/17/2024]
Abstract
The ketogenic diet (KD) is a low-carbohydrate, adequate protein and high-fat diet. KD is primarily used to treat refractory epilepsy. KD was shown to be effective in treating different neurodegenerative diseases. Alzheimer disease (AD) is the first common neurodegenerative disease in the world characterized by memory and cognitive impairment. However, the underlying mechanism of KD in controlling of AD and other neurodegenerative diseases are not discussed widely. Therefore, this review aims to revise the fundamental mechanism of KD in different neurodegenerative diseases focusing on the AD. KD induces a fasting-like which modulates the central and peripheral metabolism by regulating mitochondrial dysfunction, oxidative stress, inflammation, gut-flora, and autophagy in different neurodegenerative diseases. Different studies highlighted that KD improves AD neuropathology by regulating synaptic neurotransmission and inhibiting of neuroinflammation and oxidative stress. In conclusion, KD improves cognitive function and attenuates the progression of AD neuropathology by reducing oxidative stress, mitochondrial dysfunction, and enhancing neuronal autophagy and brain BDNF.
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Affiliation(s)
- Hayder M Al-Kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq.
| | - Majid S Jabir
- Department of Applied Science, University of Technology Iraq.
| | - Ali K Albuhadily
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq.
| | - Ali I Al-Gareeb
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq; Jabir Ibn Hayyan Medical University, Al-Ameer Qu./Najaf-iraq, PO.Box13, Kufa, Iraq.
| | - Sabrean F Jawad
- Department of Pharmacy, Al-Mustaqbal University College, Hillah, Babylon, 51001, Iraq.
| | - Ayman A Swelum
- Department of Animal Production, King Saud University, Riyadh, Saudi Arabia.
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Wang N, Yang A, Tian X, Liao J, Yang Z, Pan Y, Guo Y, He S. Label-free analysis of the β-hydroxybutyricacid drug on mitochondrial redox states repairment in type 2 diabetic mice by resonance raman scattering. Biomed Pharmacother 2024; 172:116320. [PMID: 38387134 DOI: 10.1016/j.biopha.2024.116320] [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: 12/23/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Mitochondrial redox imbalance underlies the pathophysiology of type2 diabetes mellitus (T2DM), and is closely related to tissue damage and dysfunction. Studies have shown the beneficial effects of dietary strategies that elevate β-hydroxybutyrate (BHB) levels in alleviating T2DM. Nevertheless, the role of BHB has not been clearly elucidated. METHODS We performed a spectral study to visualize the preventive effects of BHB on blood and multiorgan mitochondrial redox imbalance in T2DM mice via using label-free resonance Raman spectroscopy (RRS), and further explored the impact of BHB therapy on the pathology of T2DM mice by histological and biochemical analyses. FINDINGS Our data revealed that RRS-based mitochondrial redox states assay enabled clear and reliable identification of the improvement of mitochondrial redox imbalance by BHB, evidenced by the reduction of Raman peak intensity at 750 cm-1, 1128 cm-1 and 1585 cm-1 in blood, tissue as well as purified mitochondria of db/db mice and the increase of tissue mitochondrial succinic dehydrogenase (SDH) staining after BHB treatment. Exogenous supplementation of BHB was also found to attenuate T2DM pathology related to mitochondrial redox states, involving organ injury, blood glucose control, insulin resistance and systemic inflammation. INTERPRETATION Our findings provide strong evidence for BHB as a potential therapeutic strategy targeting mitochondria for T2DM.
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Affiliation(s)
- Na Wang
- Taizhou Hospital, Zhejiang University School of Medicine, Linhai, China; Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Anqi Yang
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University, Hangzhou 310058, China
| | - Xiong Tian
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Jiaqi Liao
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University, Hangzhou 310058, China
| | - Zhenyu Yang
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Yixiao Pan
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Yiqing Guo
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Sailing He
- Taizhou Hospital, Zhejiang University School of Medicine, Linhai, China; Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang Provincial Key Laboratory for Sensing Technologies, Zhejiang University, Hangzhou 310058, China; School of Electrical Engineering, Royal Institute of Technology, Stockholm S-100 44, Sweden.
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8
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Paoli A, Tinsley GM, Mattson MP, De Vivo I, Dhawan R, Moro T. Common and divergent molecular mechanisms of fasting and ketogenic diets. Trends Endocrinol Metab 2024; 35:125-141. [PMID: 38577754 DOI: 10.1016/j.tem.2023.10.001] [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: 08/24/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 04/06/2024]
Abstract
Intermittent short-term fasting (ISTF) and ketogenic diets (KDs) exert overlapping but not identical effects on cell metabolism, function, and resilience. Whereas health benefits of KD are largely mediated by the ketone bodies (KBs), ISTF engages additional adaptive physiological responses. KDs act mainly through inhibition of histone deacetylases (HDACs), reduction of oxidative stress, improvement of mitochondria efficiency, and control of inflammation. Mechanisms of action of ISTF include stimulation of autophagy, increased insulin and leptin sensitivity, activation of AMP-activated protein kinase (AMPK), inhibition of the mechanistic target of rapamycin (mTOR) pathway, bolstering mitochondrial resilience, and suppression of oxidative stress and inflammation. Frequent switching between ketogenic and nonketogenic states may optimize health by increasing stress resistance, while also enhancing cell plasticity and functionality.
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Affiliation(s)
- Antonio Paoli
- Department of Biomedical Sciences, University of Padua, 35127 Padua, Italy.
| | - Grant M Tinsley
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX 79409, USA
| | - Mark P Mattson
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Immaculata De Vivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Ravi Dhawan
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Tatiana Moro
- Department of Biomedical Sciences, University of Padua, 35127 Padua, Italy
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Watchon M, Robinson KJ, Luu L, An Y, Yuan KC, Plenderleith SK, Cheng F, Don EK, Nicholson GA, Lee A, Laird AS. Treatment with sodium butyrate induces autophagy resulting in therapeutic benefits for spinocerebellar ataxia type 3. FASEB J 2024; 38:e23429. [PMID: 38258931 DOI: 10.1096/fj.202300963rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024]
Abstract
Spinocerebellar ataxia type 3 (SCA3, also known as Machado Joseph disease) is a fatal neurodegenerative disease caused by the expansion of the trinucleotide repeat region within the ATXN3/MJD gene. Mutation of ATXN3 causes formation of ataxin-3 protein aggregates, neurodegeneration, and motor deficits. Here we investigated the therapeutic potential and mechanistic activity of sodium butyrate (SB), the sodium salt of butyric acid, a metabolite naturally produced by gut microbiota, on cultured SH-SY5Y cells and transgenic zebrafish expressing human ataxin-3 containing 84 glutamine (Q) residues to model SCA3. SCA3 SH-SY5Y cells were found to contain high molecular weight ataxin-3 species and detergent-insoluble protein aggregates. Treatment with SB increased the activity of the autophagy protein quality control pathway in the SCA3 cells, decreased the presence of ataxin-3 aggregates and presence of high molecular weight ataxin-3 in an autophagy-dependent manner. Treatment with SB was also beneficial in vivo, improving swimming performance, increasing activity of the autophagy pathway, and decreasing the presence of insoluble ataxin-3 protein species in the transgenic SCA3 zebrafish. Co-treating the SCA3 zebrafish with SB and chloroquine, an autophagy inhibitor, prevented the beneficial effects of SB on zebrafish swimming, indicating that the improved swimming performance was autophagy-dependent. To understand the mechanism by which SB induces autophagy we performed proteomic analysis of protein lysates from the SB-treated and untreated SCA3 SH-SY5Y cells. We found that SB treatment had increased activity of Protein Kinase A and AMPK signaling, with immunoblot analysis confirming that SB treatment had increased levels of AMPK protein and its substrates. Together our findings indicate that treatment with SB can increase activity of the autophagy pathway process and that this has beneficial effects in vitro and in vivo. While our results suggested that this activity may involve activity of a PKA/AMPK-dependent process, this requires further confirmation. We propose that treatment with sodium butyrate warrants further investigation as a potential treatment for neurodegenerative diseases underpinned by mechanisms relating to protein aggregation including SCA3.
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Affiliation(s)
- Maxinne Watchon
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Katherine J Robinson
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Luan Luu
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Yousun An
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Kristy C Yuan
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Stuart K Plenderleith
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Flora Cheng
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Emily K Don
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Garth A Nicholson
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation Hospital, Concord, New South Wales, Australia
| | - Albert Lee
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
| | - Angela S Laird
- Motor Neuron Disease Research Centre, Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, New South Wales, Australia
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10
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Jang J, Kim SR, Lee JE, Lee S, Son HJ, Choe W, Yoon KS, Kim SS, Yeo EJ, Kang I. Molecular Mechanisms of Neuroprotection by Ketone Bodies and Ketogenic Diet in Cerebral Ischemia and Neurodegenerative Diseases. Int J Mol Sci 2023; 25:124. [PMID: 38203294 PMCID: PMC10779133 DOI: 10.3390/ijms25010124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/18/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Ketone bodies (KBs), such as acetoacetate and β-hydroxybutyrate, serve as crucial alternative energy sources during glucose deficiency. KBs, generated through ketogenesis in the liver, are metabolized into acetyl-CoA in extrahepatic tissues, entering the tricarboxylic acid cycle and electron transport chain for ATP production. Reduced glucose metabolism and mitochondrial dysfunction correlate with increased neuronal death and brain damage during cerebral ischemia and neurodegeneration. Both KBs and the ketogenic diet (KD) demonstrate neuroprotective effects by orchestrating various cellular processes through metabolic and signaling functions. They enhance mitochondrial function, mitigate oxidative stress and apoptosis, and regulate epigenetic and post-translational modifications of histones and non-histone proteins. Additionally, KBs and KD contribute to reducing neuroinflammation and modulating autophagy, neurotransmission systems, and gut microbiome. This review aims to explore the current understanding of the molecular mechanisms underpinning the neuroprotective effects of KBs and KD against brain damage in cerebral ischemia and neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease.
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Affiliation(s)
- Jiwon Jang
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Su Rim Kim
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jo Eun Lee
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seoyeon Lee
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyeong Jig Son
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wonchae Choe
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Sik Yoon
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung Soo Kim
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Eui-Ju Yeo
- Department of Biochemistry, College of Medicine, Gachon University, Incheon 21999, Republic of Korea
| | - Insug Kang
- Department of Biomedical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.J.); (S.R.K.); (J.E.L.); (S.L.); (H.J.S.); (W.C.); (K.-S.Y.); (S.S.K.)
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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11
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Charlot A, Lernould A, Plus I, Zoll J. [Beneficial effects of ketogenic diet for Alzheimer's disease management]. Biol Aujourdhui 2023; 217:253-263. [PMID: 38018953 DOI: 10.1051/jbio/2023031] [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: 08/21/2023] [Indexed: 11/30/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that affects almost 1 million people in France and 55 million in the world. This pathology is a global health preoccupation because of the lack of efficient curative treatment and the increase of its prevalence. During the last decade, the comprehension of pathophysiological mechanisms involved in AD have been improved. Amyloid plaques and neurofibrillary tangles accumulation are characteristic of Alzheimer's brain patients, accompanied by increased brain inflammation and oxidative stress, impaired cerebral metabolism of glucose and mitochondrial function. Treatment of AD includes different approaches, as pharmacology, psychology support, physiotherapy, and speech therapy. However, these interventions do not have a curative effect, but only compensatory on the disease. Ketogenic diet (KD), a low-carbohydrates and high-fat diet, associated with a medium-chain triglycerides intake (MCTs) might induce benefices for Alzheimer disease patients. Carbohydrate restriction and MCTs promotes the production of ketone bodies from fatty acid degradation. These metabolites replacing glucose, serve the brain as energetic substrates, and induce neuroprotective effects. Such a nutritional support might slow down the disease progression and improve cognitive abilities of patients. This review aims to examine the neuroprotective mechanisms of KD in AD progression and describes the advantages and limitations of KD as a therapeutic strategy.
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Affiliation(s)
- Anouk Charlot
- Université de Strasbourg, CRBS, UR3072 « Mitochondrie, stress oxydant et protection musculaire », 1 rue Eugène Boeckel, 67000 Strasbourg, France
| | - Alix Lernould
- Université de Strasbourg, CRBS, UR3072 « Mitochondrie, stress oxydant et protection musculaire », 1 rue Eugène Boeckel, 67000 Strasbourg, France
| | - Irène Plus
- Université de Strasbourg, CRBS, UR3072 « Mitochondrie, stress oxydant et protection musculaire », 1 rue Eugène Boeckel, 67000 Strasbourg, France
| | - Joffrey Zoll
- Université de Strasbourg, CRBS, UR3072 « Mitochondrie, stress oxydant et protection musculaire », 1 rue Eugène Boeckel, 67000 Strasbourg, France
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12
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Hu X, Peng J, Tang W, Xia Y, Song P. A circadian rhythm-restricted diet regulates autophagy to improve cognitive function and prolong lifespan. Biosci Trends 2023; 17:356-368. [PMID: 37722875 DOI: 10.5582/bst.2023.01221] [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] [Indexed: 09/20/2023]
Abstract
Diet and circadian rhythms have been found to have a profound impact on health, disease, and aging. Skipping breakfast, eating late, and overeating have adverse effects on the body's metabolism and increase the risk of cardiovascular and metabolic diseases. Disturbance of circadian rhythms has been associated with increased risk of atherosclerosis, Alzheimer's disease, Parkinson's disease, and other diseases. Abnormal deposition of amyloid β (Aβ) and tau proteins in the brain and impaired synaptic function are linked to cognitive dysfunction. A restrictive diet following the circadian rhythm can affect the metabolism of lipids, glucose, and amino acids such as branched chain amino acids and cysteine. These metabolic changes contribute to autophagy through molecular mechanisms such as adenosine monophosphate-activated protein kinase (AMPK), rapamycin (mTOR), D-β-hydroxybutyrate (D-BHB), and neuropeptide Y (NPY). Autophagy, in turn, promotes the removal of abnormally deposited proteins and damaged organelles and improves cognitive function, ultimately prolonging lifespan. In addition, a diet restricted to the circadian rhythm induces increased expression of brain-derived neurotrophic factor (BDNF) in the forebrain region, regulating autophagy and increasing synaptic plasticity, thus enhancing cognitive function. Consequently, circadian rhythm-restricted diets could serve as a promising non-pharmacological treatment for preventing and improving cognitive dysfunction and prolonging lifespan.
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Affiliation(s)
- Xiqi Hu
- Department of Neurosurgery, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - Jun Peng
- Department of Neurosurgery, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
| | - Wei Tang
- Department of Neurosurgery, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
- International Health Care Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Ying Xia
- Department of Neurosurgery, Haikou Affiliated Hospital of Central South University Xiangya School of Medicine, Haikou, China
| | - Peipei Song
- Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
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13
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Song Y, Cao H, Zuo C, Gu Z, Huang Y, Miao J, Fu Y, Guo Y, Jiang Y, Wang F. Mitochondrial dysfunction: A fatal blow in depression. Biomed Pharmacother 2023; 167:115652. [PMID: 37801903 DOI: 10.1016/j.biopha.2023.115652] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/01/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023] Open
Abstract
Mitochondria maintain the normal physiological function of nerve cells by producing sufficient cellular energy and performing crucial roles in maintaining the metabolic balance through intracellular Ca2+ homeostasis, oxidative stress, and axonal development. Depression is a prevalent psychiatric disorder with an unclear pathophysiology. Damage to the hippocampal neurons is a key component of the plasticity regulation of synapses and plays a critical role in the mechanism of depression. There is evidence suggesting that mitochondrial dysfunction is associated with synaptic impairment. The maintenance of mitochondrial homeostasis includes quantitative maintenance and quality control of mitochondria. Mitochondrial biogenesis produces new and healthy mitochondria, and mitochondrial dynamics cooperates with mitophagy to remove damaged mitochondria. These processes maintain mitochondrial population stability and exert neuroprotective effects against early depression. In contrast, mitochondrial dysfunction is observed in various brain regions of patients with major depressive disorders. The accumulation of defective mitochondria accelerates cellular nerve dysfunction. In addition, impaired mitochondria aggravate alterations in the brain microenvironment, promoting neuroinflammation and energy depletion, thereby exacerbating the development of depression. This review summarizes the influence of mitochondrial dysfunction and the underlying molecular pathways on the pathogenesis of depression. Additionally, we discuss the maintenance of mitochondrial homeostasis as a potential therapeutic strategy for depression.
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Affiliation(s)
- Yu Song
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Huan Cao
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Chengchao Zuo
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Zhongya Gu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Yaqi Huang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Jinfeng Miao
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Yufeng Fu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Yu Guo
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China
| | - Yongsheng Jiang
- Cancer Center of Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030 Hubei, China.
| | - Furong Wang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan 430030, Hubei, China; Key Laboratory of Vascular Aging (HUST), Ministry of Education, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Road, Wuhan, 430030 Hubei, China.
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14
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Poblete RA, Yaceczko S, Aliakbar R, Saini P, Hazany S, Breit H, Louie SG, Lyden PD, Partikian A. Optimization of Nutrition after Brain Injury: Mechanistic and Therapeutic Considerations. Biomedicines 2023; 11:2551. [PMID: 37760993 PMCID: PMC10526443 DOI: 10.3390/biomedicines11092551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Emerging science continues to establish the detrimental effects of malnutrition in acute neurological diseases such as traumatic brain injury, stroke, status epilepticus and anoxic brain injury. The primary pathological pathways responsible for secondary brain injury include neuroinflammation, catabolism, immune suppression and metabolic failure, and these are exacerbated by malnutrition. Given this, there is growing interest in novel nutritional interventions to promote neurological recovery after acute brain injury. In this review, we will describe how malnutrition impacts the biomolecular mechanisms of secondary brain injury in acute neurological disorders, and how nutritional status can be optimized in both pediatric and adult populations. We will further highlight emerging therapeutic approaches, including specialized diets that aim to resolve neuroinflammation, immunodeficiency and metabolic crisis, by providing pre-clinical and clinical evidence that their use promotes neurologic recovery. Using nutrition as a targeted treatment is appealing for several reasons that will be discussed. Given the high mortality and both short- and long-term morbidity associated with acute brain injuries, novel translational and clinical approaches are needed.
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Affiliation(s)
- Roy A. Poblete
- Department of Neurology, Keck School of Medicine, The University of Southern California, 1540 Alcazar Street, Suite 215, Los Angeles, CA 90033, USA; (R.A.); (P.S.); (H.B.)
| | - Shelby Yaceczko
- UCLA Health, University of California, 100 Medical Plaza, Suite 345, Los Angeles, CA 90024, USA;
| | - Raya Aliakbar
- Department of Neurology, Keck School of Medicine, The University of Southern California, 1540 Alcazar Street, Suite 215, Los Angeles, CA 90033, USA; (R.A.); (P.S.); (H.B.)
| | - Pravesh Saini
- Department of Neurology, Keck School of Medicine, The University of Southern California, 1540 Alcazar Street, Suite 215, Los Angeles, CA 90033, USA; (R.A.); (P.S.); (H.B.)
| | - Saman Hazany
- Department of Radiology, Keck School of Medicine, The University of Southern California, 1500 San Pablo Street, Los Angeles, CA 90033, USA;
| | - Hannah Breit
- Department of Neurology, Keck School of Medicine, The University of Southern California, 1540 Alcazar Street, Suite 215, Los Angeles, CA 90033, USA; (R.A.); (P.S.); (H.B.)
| | - Stan G. Louie
- Department of Clinical Pharmacy, School of Pharmacy, The University of Southern California, 1985 Zonal Avenue, Los Angeles, CA 90089, USA;
| | - Patrick D. Lyden
- Department of Neurology, Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, The University of Southern California, 1540 Alcazar Street, Suite 215, Los Angeles, CA 90033, USA;
| | - Arthur Partikian
- Department of Neurology, Department of Pediatrics, Keck School of Medicine, The University of Southern California, 2010 Zonal Avenue, Building B, 3P61, Los Angeles, CA 90033, USA;
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15
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García-Velázquez L, Massieu L. The proteomic effects of ketone bodies: implications for proteostasis and brain proteinopathies. Front Mol Neurosci 2023; 16:1214092. [PMID: 37575967 PMCID: PMC10413579 DOI: 10.3389/fnmol.2023.1214092] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/07/2023] [Indexed: 08/15/2023] Open
Abstract
A growing body of evidence supports the beneficial effects of the ketone bodies (KBs), acetoacetate and β-hydroxybutyrate (BHB), on diverse physiological processes and diseases. Hence, KBs have been suggested as therapeutic tools for neurodegenerative diseases. KBs are an alternative fuel during fasting and starvation as they can be converted to Ac-CoA to produce ATP. A ketogenic diet (KD), enriched in fats and low in carbohydrates, induces KB production in the liver and favors their use in the brain. BHB is the most abundant KB in the circulation; in addition to its role as energy fuel, it exerts many actions that impact the set of proteins in the cell and tissue. BHB can covalently bind to proteins in lysine residues as a new post-translational modification (PTM) named β-hydroxybutyrylation (Kbhb). Kbhb has been identified in many proteins where Kbhb sites can be critical for binding to other proteins or cofactors. Kbhb is mostly found in proteins involved in chromatin structure, DNA repair, regulation of spliceosome, transcription, and oxidative phosphorylation. Histones are the most studied family of proteins with this PTM, and H3K9bhb is the best studied histone mark. Their target genes are mainly related to cell metabolism, chromatin remodeling and the control of circadian rhythms. The role of Kbhb on physiological processes is poorly known, but it might link KB metabolism to cell signaling and genome regulation. BHB also impacts the proteome by influencing proteostasis. This KB can modulate the Unfolded Protein Response (UPR) and autophagy, two processes involved in the maintenance of protein homeostasis through the clearance of accumulated unfolded and damaged proteins. BHB can support proteostasis and regulate the UPR to promote metabolism adaptation in the liver and prevent cell damage in the brain. Also, BHB stimulates autophagy aiding to the degradation of accumulated proteins. Protein aggregation is common to proteinopathies like Alzheimer's (AD) and Parkinson's (PD) diseases, where the KD and BHB treatment have shown favorable effects. In the present review, the current literature supporting the effects of KBs on proteome conformation and proteostasis is discussed, as well as its possible impact on AD and PD.
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Affiliation(s)
| | - Lourdes Massieu
- Department of Molecular Neuropathology, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), México City, Mexico
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16
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Madhavan SS, Roa Diaz S, Peralta S, Nomura M, King CD, Lin A, Bhaumik D, Shah S, Blade T, Gray W, Chamoli M, Eap B, Panda O, Diaz D, Garcia TY, Stubbs BJ, Lithgow GJ, Schilling B, Verdin E, Chaudhuri AR, Newman JC. β-hydroxybutyrate is a metabolic regulator of proteostasis in the aged and Alzheimer disease brain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.03.547547. [PMID: 37461525 PMCID: PMC10349929 DOI: 10.1101/2023.07.03.547547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Loss of proteostasis is a hallmark of aging and Alzheimer disease (AD). Here, we identify β-hydroxybutyrate (βHB), a ketone body, as a regulator of protein solubility in the aging brain. βHB is a small molecule metabolite which primarily provides an oxidative substrate for ATP during hypoglycemic conditions, and also regulates other cellular processes through covalent and noncovalent protein interactions. We demonstrate βHB-induced protein insolubility across in vitro, ex vivo, and in vivo mouse systems. This activity is shared by select structurally similar metabolites, is not dependent on covalent protein modification, pH, or solute load, and is observable in mouse brain in vivo after delivery of a ketone ester. Furthermore, this phenotype is selective for pathological proteins such as amyloid-β, and exogenous βHB ameliorates pathology in nematode models of amyloid-β aggregation toxicity. We have generated a comprehensive atlas of the βHB-induced protein insolublome ex vivo and in vivo using mass spectrometry proteomics, and have identified common protein domains within βHB target sequences. Finally, we show enrichment of neurodegeneration-related proteins among βHB targets and the clearance of these targets from mouse brain, likely via βHB-induced autophagy. Overall, these data indicate a new metabolically regulated mechanism of proteostasis relevant to aging and AD.
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Affiliation(s)
- S S Madhavan
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Geriatrics, University of California San Francisco, San Francisco, CA, USA
| | - S Roa Diaz
- Buck Institute for Research on Aging, Novato, CA, USA
- Department of Geriatrics, University of California San Francisco, San Francisco, CA, USA
| | - S Peralta
- Buck Institute for Research on Aging, Novato, CA, USA
| | - M Nomura
- Buck Institute for Research on Aging, Novato, CA, USA
| | - C D King
- Buck Institute for Research on Aging, Novato, CA, USA
| | - A Lin
- Buck Institute for Research on Aging, Novato, CA, USA
| | - D Bhaumik
- Buck Institute for Research on Aging, Novato, CA, USA
| | - S Shah
- Buck Institute for Research on Aging, Novato, CA, USA
| | - T Blade
- Buck Institute for Research on Aging, Novato, CA, USA
| | - W Gray
- Buck Institute for Research on Aging, Novato, CA, USA
| | - M Chamoli
- Buck Institute for Research on Aging, Novato, CA, USA
| | - B Eap
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - O Panda
- Buck Institute for Research on Aging, Novato, CA, USA
| | - D Diaz
- Buck Institute for Research on Aging, Novato, CA, USA
| | - T Y Garcia
- Buck Institute for Research on Aging, Novato, CA, USA
- Department of Geriatrics, University of California San Francisco, San Francisco, CA, USA
| | - B J Stubbs
- Buck Institute for Research on Aging, Novato, CA, USA
| | - G J Lithgow
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - B Schilling
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - E Verdin
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
| | - A R Chaudhuri
- Buck Institute for Research on Aging, Novato, CA, USA
| | - J C Newman
- Buck Institute for Research on Aging, Novato, CA, USA
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Geriatrics, University of California San Francisco, San Francisco, CA, USA
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