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Garner S, Davies E, Barkus E, Kraeuter AK. Ketogenic diet has a positive association with mental and emotional well-being in the general population. Nutrition 2024; 124:112420. [PMID: 38669832 DOI: 10.1016/j.nut.2024.112420] [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: 07/18/2023] [Revised: 01/26/2024] [Accepted: 03/05/2024] [Indexed: 04/28/2024]
Abstract
OBJECTIVES A ketogenic diet reduces pathologic stress and improves mood in neurodegenerative and neurodevelopmental disorders. However, the effects of a ketogenic diet for people from the general population have largely been unexplored. A ketogenic diet is increasingly used for weight loss. Research in healthy individuals primarily focuses on the physical implications of a ketogenic diet. It is important to understand the holistic effects of a ketogenic diet, not only the physiological but also the psychological effects, in non-clinical samples. The aim of this cross-sectional study with multiple cohorts was to investigate the association of a ketogenic diet with different aspects of mental health, including calmness, contentedness, alertness, cognitive and emotional stress, depression, anxiety, and loneliness, in a general healthy population. METHODS Two online surveys were distributed: cohort 1 used Bond-Lader visual analog scales and Perceived Stress Scale (n = 147) and cohort 2 the Depression Anxiety Stress Scale and revised UCLA Loneliness Scale (n = 276). RESULTS A ketogenic diet was associated with higher self-reported mental and emotional well-being behaviors, including calmness, contentedness, alertness, cognitive and emotional stress, depression, anxiety, and loneliness, compared with individuals on a non-specific diet in a general population. CONCLUSION This research found that a ketogenic diet has potential psychological benefits in the general population.
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Affiliation(s)
- Sarah Garner
- Department of Psychology, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Evan Davies
- Department of Psychology, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK; Brain, Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, UK
| | - Emma Barkus
- Department of Psychology, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Ann-Katrin Kraeuter
- Department of Psychology, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK; Brain, Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, UK; NUTRAN, Northumbria University, Newcastle upon Tyne, UK.
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Liao L, Xu H, Zhao Y, Zheng X. Metabolic interventions combined with CTLA-4 and PD-1/PD-L1 blockade for the treatment of tumors: mechanisms and strategies. Front Med 2023; 17:805-822. [PMID: 37897562 DOI: 10.1007/s11684-023-1025-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/16/2023] [Indexed: 10/30/2023]
Abstract
Immunotherapies based on immune checkpoint blockade (ICB) have significantly improved patient outcomes and offered new approaches to cancer therapy over the past decade. To date, immune checkpoint inhibitors (ICIs) of CTLA-4 and PD-1/PD-L1 represent the main class of immunotherapy. Blockade of CTLA-4 and PD-1/PD-L1 has shown remarkable efficacy in several specific types of cancers, however, a large subset of refractory patients presents poor responsiveness to ICB therapy; and the underlying mechanism remains elusive. Recently, numerous studies have revealed that metabolic reprogramming of tumor cells restrains immune responses by remodeling the tumor microenvironment (TME) with various products of metabolism, and combination therapies involving metabolic inhibitors and ICIs provide new approaches to cancer therapy. Nevertheless, a systematic summary is lacking regarding the manner by which different targetable metabolic pathways regulate immune checkpoints to overcome ICI resistance. Here, we demonstrate the generalized mechanism of targeting cancer metabolism at three crucial immune checkpoints (CTLA-4, PD-1, and PD-L1) to influence ICB therapy and propose potential combined immunotherapeutic strategies co-targeting tumor metabolic pathways and immune checkpoints.
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Affiliation(s)
- Liming Liao
- State Key Laboratory of Protein and Plant Gene Research, Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing, 100871, China
| | - Huilin Xu
- State Key Laboratory of Protein and Plant Gene Research, Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing, 100871, China
| | - Yuhan Zhao
- State Key Laboratory of Protein and Plant Gene Research, Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing, 100871, China
| | - Xiaofeng Zheng
- State Key Laboratory of Protein and Plant Gene Research, Department of Biochemistry and Molecular Biology, School of Life Sciences, Peking University, Beijing, 100871, China.
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Zhang JM, Chen MJ, He JH, Li YP, Li ZC, Ye ZJ, Bao YH, Huang BJ, Zhang WJ, Kwan P, Mao YL, Qiao JD. Ketone Body Rescued Seizure Behavior of LRP1 Deficiency in Drosophila by Modulating Glutamate Transport. J Mol Neurosci 2022; 72:1706-1714. [PMID: 35668313 DOI: 10.1007/s12031-022-02026-6] [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: 03/20/2022] [Accepted: 05/10/2022] [Indexed: 11/26/2022]
Abstract
LRP1, the low-density lipoprotein receptor 1, would be a novel candidate gene of epilepsy according to our bioinformatic results and the animal study. In this study, we explored the role of LRP1 in epilepsy and whether beta-hydroxybutyrate, the principal ketone body of the ketogenic diet, can treat epilepsy caused by LRP1 deficiency in drosophila. UAS/GAL4 system was used to establish different genotype models. Flies were given standard, high-sucrose, and ketone body food randomly. The bang-sensitive test was performed on flies and seizure-like behavior was assessed. In morphologic experiments, we found that LRP1 deficiency caused partial loss of the ellipsoidal body and partial destruction of the fan-shaped body. Whole-body and glia LRP1 defect flies had a higher seizure rate compared to the control group. Ketone body decreased the seizure rate in behavior test in all LRP1 defect flies, compared to standard and high sucrose diet. Overexpression of glutamate transporter gene Eaat1 could mimic the ketone body effect on LRP1 deficiency flies. This study demonstrated that LRP1 defect globally or in glial cells or neurons could induce epilepsy in drosophila. The ketone body efficaciously rescued epilepsy caused by LRP1 knockdown. The results support screening for LRP1 mutations as discriminating conduct for individuals who require clinical attention and further clarify the mechanism of the ketogenic diet in epilepsy, which could help epilepsy patients make a precise treatment case by case.
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Affiliation(s)
- Jin-Ming Zhang
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Ming-Jie Chen
- The Third Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Jiong-Hui He
- The Third Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Ya-Ping Li
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Zhi-Cai Li
- The First Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Zi-Jing Ye
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yong-Hui Bao
- School of Pediatrics, Guangzhou Medical University, Guangzhou, China
| | - Bing-Jun Huang
- School of Public Health, Guangzhou Medical University, Guangzhou, China
| | - Wen-Jie Zhang
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, China
| | - Ping Kwan
- School of Veterinary Science, University of Sydney, Sydney, Australia
| | - Yu-Ling Mao
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
| | - Jing-da Qiao
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China.
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Wolver S, Fadel K, Fieger E, Aburish Z, O'Rourke B, Chandler TM, Shimotani D, Clingempeel N, Jain S, Jain A, Puri P. Clinical Use of a Real-World Low Carbohydrate Diet Resulting in Reduction of Insulin Dose, Hemoglobin A1c, and Weight. Front Nutr 2021; 8:690855. [PMID: 34458301 PMCID: PMC8385129 DOI: 10.3389/fnut.2021.690855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/06/2021] [Indexed: 01/22/2023] Open
Abstract
Introduction: Type 2 Diabetes Mellitus (T2DM) is increasing in epidemic proportions. In addition to the morbidity and mortality, for those treated with insulin, the physical, psychological, and financial tolls are often greater. Our real-world study evaluated a Low Carbohydrate Diet (LCD) in patients with T2DM on insulin with respect to glycemic control, insulin reduction, and weight loss. Materials and Methods: A prospective cohort study was conducted via an Electronic Medical Record search for patients attending the Virginia Commonwealth University Medical Weight Loss Program from 2014 to 2020 with Type 2 Diabetes Mellitus who initially presented on insulin. Data was extracted for 1 year after enrollment. The weight loss program focuses on a LCD. Results: Of 185 participants, the mean (± SD) age was 56.1 (9.9) years. Seventy percent were female and 63% were black. Eighty-five completed 12 months (45.9%), reduced their median (25-75% interquartile range, IQR) insulin dose from 69 to 0 units (0-18, p < 0.0001), HbA1c from 8 to 6.9% (6.2-7.8, p < 0.0001), and weight from 116 to 99 kg (85-120, p < 001). Eighty six percent who completed 12 months were able to reduce or discontinue insulin, with 70.6% completely discontinuing. Among all participants who completed 3, 6, or 12 months, 97.6% were able to reduce or eliminate insulin use. Conclusion: In patients with T2DM on a LCD, it is possible to reduce and even discontinue insulin use while facilitating weight loss and achieving glycemic control. A Low Carbohydrate Diet should be offered to all patients with diabetes, especially those using insulin.
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Affiliation(s)
- Susan Wolver
- Virginia Commonwealth University, Medical Center, Richmond, VA, United States
| | - Kristen Fadel
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Ethan Fieger
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Zein Aburish
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Brennen O'Rourke
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Toni-Marie Chandler
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Dorian Shimotani
- School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Natasha Clingempeel
- Virginia Commonwealth University, Medical Center, Richmond, VA, United States
| | - Shuchi Jain
- Virginia Commonwealth University, Richmond, VA, United States
| | - Aashish Jain
- Independent Researcher, Richmond, VA, United States
| | - Puneet Puri
- Virginia Commonwealth University, Medical Center, Richmond, VA, United States
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Ferrere G, Tidjani Alou M, Liu P, Goubet AG, Fidelle M, Kepp O, Durand S, Iebba V, Fluckiger A, Daillère R, Thelemaque C, Grajeda-Iglesias C, Alves Costa Silva C, Aprahamian F, Lefevre D, Zhao L, Ryffel B, Colomba E, Arnedos M, Drubay D, Rauber C, Raoult D, Asnicar F, Spector T, Segata N, Derosa L, Kroemer G, Zitvogel L. Ketogenic diet and ketone bodies enhance the anticancer effects of PD-1 blockade. JCI Insight 2021; 6:145207. [PMID: 33320838 PMCID: PMC7934884 DOI: 10.1172/jci.insight.145207] [Citation(s) in RCA: 147] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023] Open
Abstract
Limited experimental evidence bridges nutrition and cancer immunosurveillance. Here, we show that ketogenic diet (KD) — or its principal ketone body, 3-hydroxybutyrate (3HB), most specifically in intermittent scheduling — induced T cell–dependent tumor growth retardation of aggressive tumor models. In conditions in which anti–PD-1 alone or in combination with anti–CTLA-4 failed to reduce tumor growth in mice receiving a standard diet, KD, or oral supplementation of 3HB reestablished therapeutic responses. Supplementation of KD with sucrose (which breaks ketogenesis, abolishing 3HB production) or with a pharmacological antagonist of the 3HB receptor GPR109A abolished the antitumor effects. Mechanistically, 3HB prevented the immune checkpoint blockade–linked upregulation of PD-L1 on myeloid cells, while favoring the expansion of CXCR3+ T cells. KD induced compositional changes of the gut microbiota, with distinct species such as Eisenbergiella massiliensis commonly emerging in mice and humans subjected to carbohydrate-low diet interventions and highly correlating with serum concentrations of 3HB. Altogether, these results demonstrate that KD induces a 3HB-mediated antineoplastic effect that relies on T cell–mediated cancer immunosurveillance.
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Affiliation(s)
| | | | - Peng Liu
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | | | | | - Oliver Kepp
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | - Sylvère Durand
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | - Valerio Iebba
- Department of Medical Sciences, University of Trieste, Trieste, Italy
| | | | | | | | | | | | - Fanny Aprahamian
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | - Déborah Lefevre
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | - Liwei Zhao
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | | | | | | | - Damien Drubay
- Gustave Roussy, Department of Biostatistics and Epidemiology, University Paris-Saclay, Villejuif, France
| | | | - Didier Raoult
- URMITE, Aix Marseille Université, UM63, CNRS 7278, IRD 198, INSERM 1095, IHU-Méditerranée Infection, Marseille, France
| | - Francesco Asnicar
- Department Cellular, computational and integrative biology (CIBIO), University of Trento, Trento, Italy
| | - Tim Spector
- The Department of Twin Research & Genetic Epidemiology, King's College London, United Kingdom
| | - Nicola Segata
- Department Cellular, computational and integrative biology (CIBIO), University of Trento, Trento, Italy
| | - Lisa Derosa
- Gustave Roussy, INSERM U1015, Villejuif, France
| | - Guido Kroemer
- Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, INSERM UMR1138, Centre de Recherche des Cordeliers, Paris, France
| | - Laurence Zitvogel
- Gustave Roussy, INSERM U1015, Villejuif, France.,University Paris Saclay, Saint-Aubin, France.,CIC 1428 BIOTHERIS, Gustave Roussy, Villejuif, France
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Fieger EI, Fadel KM, Modarres AH, Wickham EP, Wolver SE. SUCCESSFUL REIMPLEMENTATION OF A VERY LOW CARBOHYDRATE KETOGENIC DIET AFTER SGLT2 INHIBITOR ASSOCIATED EUGLYCEMIC DIABETIC KETOACIDOSIS. AACE Clin Case Rep 2020; 6:e330-e333. [PMID: 33244496 DOI: 10.4158/accr-2020-0314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/25/2020] [Indexed: 12/25/2022] Open
Abstract
Objective We report a case of a successful reimplementation of a very low carbohydrate ketogenic diet (VLCKD) after a case of euglycemic diabetic ketoacidosis (euDKA). Methods A 42-year-old female with a history of type 2 diabetes mellitus on a self-administered VLCKD was prescribed a sodium-glucose co-transporter 2 (SGLT2) inhibitor. Two weeks after initiation, she presented with nausea and vomiting and was found to be in euDKA which was treated with fluid resuscitation, insulin infusion, and cessation of the SGLT2 inhibitor. She was discharged on insulin and instructed not to resume a VLCKD. Results After discharge, the patient experienced rapid weight gain and deteriorating glycemic control and desired to resume a VLCKD. She was referred to a university-based medical weight loss clinic that specializes in a VLCKD. The patient was monitored with daily contact via the electronic health record's patient portal and serial laboratory testing while her carbohydrate intake was slowly reduced and her insulin titrated off. She has safely remained in ketosis for 2 years without a further episode of euDKA. Conclusion As the clinical use of SGLT2 inhibitors and the VLCKD both become increasingly common, it is vital for practitioners to be aware that the combination can lead to euDKA. We present a case of successfully resuming a VLCKD after recovering from euDKA and cessation of SGLT2 inhibitor therapy.
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