Your browser doesn't support javascript.
loading
Montrer: 20 | 50 | 100
Résultats 1 - 20 de 638
Filtrer
1.
Nutrients ; 16(11)2024 May 25.
Article de Anglais | MEDLINE | ID: mdl-38892552

RÉSUMÉ

Fibromyalgia (FM), a chronic disease with a high incidence in women, poses a significant challenge for diagnosis and treatment, especially due to the absence of specific biomarkers and the multifaceted nature of its symptoms, which range from neuromuscular pain to mood disorders and intestinal dysbiosis. While diagnosis currently relies on rheumatological clinical evaluations and treatment options mainly focus on symptom management, FM seems to have possible links with systemic metabolic dysfunctions with a common inflammatory root. In this context, a new therapeutic avenue emerges: could a therapeutic nutritional approach be the missing piece of the puzzle? Indeed, diet therapies employed particularly for metabolic syndromes proved recently to be efficacious for correcting systemic dysmetabolism and a high number of chronic inflammation conditions. In particular, the very-low-calorie ketogenic diet (VLCKD) demonstrated therapeutic benefits in many disorders. In the present study, we aimed to investigate the specific effects of two dietary interventions, namely the oloproteic VLCKD and the low-glycemic insulinemic (LOGI) diet, on two groups of female FM patients (FM1 and FM2) over a 45-day period. Utilizing clinical and laboratory tests, as well as non-invasive NMR metabolomic analysis of serum, urine, and saliva samples, we sought to uncover how these dietary regimens impact the metabolic dysfunctions associated with FM.


Sujet(s)
Régime cétogène , Fibromyalgie , Fibromyalgie/diétothérapie , Fibromyalgie/thérapie , Humains , Femelle , Régime cétogène/méthodes , Adulte d'âge moyen , Adulte , Résultat thérapeutique , Marqueurs biologiques/sang , Marqueurs biologiques/urine
2.
Nutrients ; 16(11)2024 May 29.
Article de Anglais | MEDLINE | ID: mdl-38892612

RÉSUMÉ

Pharmacotherapy is the therapeutic mainstay in epilepsy; however, in about 30% of patients, epileptic seizures are drug-resistant. A ketogenic diet (KD) is an alternative therapeutic option. The mechanisms underlying the anti-seizure effect of a KD are not fully understood. Epileptic seizures lead to an increased energy demand of neurons. An improvement in energy provisions may have a protective effect. C8 and C10 fatty acids have been previously shown to activate mitochondrial function in vitro. This could involve sirtuins (SIRTs) as regulatory elements of energy metabolism. The aim of the present study was to investigate whether ß-hydroxybutyrate (ßHB), C8 fatty acids, C10 fatty acids, or a combination of C8 and C10 (250/250 µM) fatty acids, which all increase under a KD, could up-regulate SIRT1, -3, -4, and -5 in HT22 hippocampal murine neurons in vitro. Cells were incubated for 1 week in the presence of these metabolites. The sirtuins were measured at the enzyme (fluorometrically), protein (Western blot), and gene expression (PCR) levels. In hippocampal cells, the C8, C10, and C8 and C10 incubations led to increases in the sirtuin levels, which were not inferior to a ßHB incubation as the 'gold standard'. This may indicate that both C8 and C10 fatty acids are important for the antiepileptic effect of a KD. A KD may be replaced by nutritional supplements of C8 and C10 fatty acids, which could facilitate the diet.


Sujet(s)
Acide 3-hydroxy-butyrique , Régime cétogène , Épilepsie pharmacorésistante , Acides gras , Hippocampe , Neurones , Sirtuines , Animaux , Neurones/effets des médicaments et des substances chimiques , Neurones/métabolisme , Régime cétogène/méthodes , Souris , Sirtuines/métabolisme , Acides gras/métabolisme , Épilepsie pharmacorésistante/diétothérapie , Épilepsie pharmacorésistante/traitement médicamenteux , Hippocampe/métabolisme , Hippocampe/effets des médicaments et des substances chimiques , Acide 3-hydroxy-butyrique/pharmacologie , Lignée cellulaire
3.
Cell Rep Med ; 5(6): 101593, 2024 Jun 18.
Article de Anglais | MEDLINE | ID: mdl-38843842

RÉSUMÉ

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.


Sujet(s)
Vieillissement , Cyclic AMP-Dependent Protein Kinases , Régime cétogène , Potentialisation à long terme , Mémoire , Protéome , Transduction du signal , Animaux , Cyclic AMP-Dependent Protein Kinases/métabolisme , Vieillissement/physiologie , Vieillissement/métabolisme , Régime cétogène/méthodes , Protéome/métabolisme , Souris , Mâle , Mémoire/physiologie , Potentialisation à long terme/physiologie , Souris de lignée C57BL , Hippocampe/métabolisme , Synapses/métabolisme , Facteur neurotrophique dérivé du cerveau/métabolisme , Plasticité neuronale/physiologie , Phosphorylation
4.
Medicina (Kaunas) ; 60(6)2024 May 31.
Article de Anglais | MEDLINE | ID: mdl-38929536

RÉSUMÉ

Background and Objectives: Ketogenic diet therapy (KDT) has been used as a non-pharmacological treatment for childhood refractory epilepsy. Its efficacy and safety have been described in numerous studies and reviews. However, there have been fewer studies evaluating the challenges experienced by patients and their family members when starting KDT. When implementing a new treatment method, challenges arise for both the healthcare professionals and patients, making it important to summarize the initial results and compare them with the experiences of other centers. To analyze and evaluate the efficacy and safety of KDT in children with epilepsy, as well as to consider the challenges faced by their parents/caregivers. Materials and Methods: A retrospective analysis of patients' data (N = 30) and an analysis of the completed questionnaires of the parents/caregivers (N = 22) occurred. Results: In the study group, 66.7% of the patients had a >50% decrease in seizure frequency, and 2/3 of them had a >90% decrease in seizure frequency or were seizure-free, which enabled reducing the anti-seizure medications in 36.4% of the patients, as well as reducing the hospital visits. Cognitive improvement and better alertness were subjectively reported by 59.1% of the parents/caregivers. No dangerous long-term adverse effects of KDT have been observed in the study group. The patients with generalized epilepsy experienced significantly more adverse events. Most of the adverse effects of KDT were related to the digestive system, but usually they were temporary and controllable. The challenges of the parents/caregivers were mostly related to social life issues and financial difficulties; the medical-related challenges were minimal. Conclusions: KDT is an effective and safe treatment option for children with drug-resistant epilepsy, and the challenges faced by families are resolvable. In order to ensure effective KDT, a multidisciplinary team is required. This would ensure smooth and comprehensive care and the timely resolution of emerging problems. The cooperation of the families undergoing KDT is also important, enabling them to share their experiences.


Sujet(s)
Régime cétogène , Humains , Régime cétogène/méthodes , Régime cétogène/effets indésirables , Études rétrospectives , Mâle , Femelle , Enfant , Enfant d'âge préscolaire , Épilepsie/diétothérapie , Résultat thérapeutique , Enquêtes et questionnaires , Adolescent , Nourrisson
5.
Am J Physiol Cell Physiol ; 327(1): C140-C150, 2024 Jul 01.
Article de Anglais | MEDLINE | ID: mdl-38766768

RÉSUMÉ

Identifying effective treatment(s) for sarcopenia and sarcopenic obesity is of paramount importance as the global population advances in age and obesity continues to be a worldwide concern. Evidence has shown that a ketogenic diet can be beneficial for the preservation of muscle quality and function in older adults, but long-term adherence is low due in part to the high-fat (≥80%), very low carbohydrate (<5%) composition of the diet. When provided in adequate amounts, exogenous ketone esters (KEs) can increase circulating ketones to concentrations that exceed those observed during prolonged fasting or starvation without significant alterations in the diet. Ketone esters first emerged in the mid-1990s and their use in preclinical and clinical research has escalated within the past 10-15 years. We present findings from a narrative review of the existing literature for a proposed hypothesis on the effects of exogenous ketones as a therapeutic for preservation of skeletal muscle and function within the context of sarcopenic obesity and future directions for exploration. Much of the reviewed literature herein examines the mechanisms of the ketone diester (R,S-1,3-butanediol diacetoacetate) on skeletal muscle mass, muscle protein synthesis, and epigenetic regulation in murine models. Additional studies are needed to further examine the key regulatory factors producing these effects in skeletal muscle, examine convergent and divergent effects among different ketone ester formulations, and establish optimal frequency and dosing regimens to translate these findings into humans.


Sujet(s)
Régime cétogène , Esters , Cétones , Muscles squelettiques , Obésité , Sarcopénie , Humains , Sarcopénie/métabolisme , Sarcopénie/traitement médicamenteux , Sarcopénie/diétothérapie , Obésité/métabolisme , Obésité/traitement médicamenteux , Cétones/métabolisme , Animaux , Régime cétogène/méthodes , Muscles squelettiques/métabolisme , Muscles squelettiques/effets des médicaments et des substances chimiques
6.
Epilepsy Behav ; 156: 109830, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38759426

RÉSUMÉ

Epilepsy affects millions of people and when medications are insufficient to maintain seizure control, individuals are diagnosed with refractory epilepsy (RE). Medical ketogenic diet therapy (KDT), a diet high in fat and low in carbohydrates and sufficient in protein, is a well-established treatment for RE. However, compliance is one of the main reasons for discontinuation of KDT and, with pediatric RE patients, the ability of informal caregivers, typically family members, to maintain diet adherence is vital for successful KDT treatment. The central role that informal caregivers play for effective KDT implementation is recognized, however, there is a need to elucidate the rationale and theoretical underpinnings of effective KDT caregiver support programs to inform best practices. Therefore, this systematic literature review aims to identify the existing fundamental understandings of KDT caregiver support to help build a foundation of theory-based knowledge to promote evidenced practice. After screening 137 publications, three studies that discussed potential underlying components of effective caregiver support were included in this review. These articles followed a similar approach as they 1) employed qualitative methods delving into caregiver needs, 2) findings highlighted the importance of support from family, friends, fellow caregivers and their child's medical team, and 3) the inclusion of caregiver support findings were a supplement to the main purpose of the manuscript. Research focused on KDT caregivers is in its infancy. There is a clear need for the systematic examination of support for KDT caregivers to build a foundation for effective support programs and to increase the access to quality support programming to foster KDT implementation, desirable patient outcomes, and caregiver well being. In this article we discuss opportunities to apply self-determination theory to the KDT caregiver support research and practice.


Sujet(s)
Aidants , Régime cétogène , Épilepsie , Humains , Régime cétogène/méthodes , Aidants/psychologie , Épilepsie/diétothérapie , Enfant , Maladies du système nerveux/diétothérapie
7.
Clin Nutr ; 43(6): 1475-1487, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38723301

RÉSUMÉ

BACKGROUND & AIMS: The past few decades have witnessed a rapid growth in the prevalence of nonalcoholic fatty liver disease (NAFLD). While the ketogenic diet (KD) is considered for managing NAFLD, the safety and efficacy of the KD on NAFLD has been a controversial topic. Here, we aimed to investigate the effect of KD of different durations on metabolic endpoints in mice with NAFLD and explore the underlying mechanisms. METHODS: NAFLD mice were fed with KD for 1, 2, 4 and 6 weeks, respectively. The blood biochemical indexes (blood lipids, AST, ALT and etc.) and liver fat were measured. The LC-MS/MS based proteomic analysis was performed on liver tissues. Metallothionein-2 (MT2) was knocked down with adeno-associated virus (AAV) or small interfering RNA (siRNA) in NAFLD mice and AML-12 cells, respectively. H&E, BODIPY and ROS staining were performed to examine lipid deposition and oxidative stress. Furthermore, MT2 protein levels, nucleus/cytoplasm distribution and DNA binding activity of peroxisome proliferators-activated receptors α (PPARα) were evaluated. RESULTS: KD feeding for 2 weeks showed the best improvement on NAFLD phenotype. Proteomic analysis revealed that MT2 was a key candidate for different metabolic endpoints of NAFLD affected by different durations of KD feeding. MT2 knockdown in NAFLD mice blocked the effects of 2 weeks of KD feeding on HFD-induced steatosis. In mouse primary hepatocytes and AML-12 cells, MT2 protein levels were induced by ß-hydroxybutyric acid (ß-OHB). MT2 Knockdown blunted the effects of ß-OHB on alleviating PA-induced lipid deposition. Mechanistically, 2 weeks of KD or ß-OHB treatment reduced oxidative stress and upregulated the protein levels of MT2 in nucleus, which subsequently increased its DNA binding activity and PPARα protein expression. CONCLUSIONS: Collectively, these findings indicated that KD feeding prevented NAFLD in a time dependent manner and MT2 is a potential target contributing to KD improvement on steatosis.


Sujet(s)
Régime cétogène , Métallothionéine , Souris de lignée C57BL , Stéatose hépatique non alcoolique , Stress oxydatif , Régulation positive , Animaux , Stéatose hépatique non alcoolique/métabolisme , Stéatose hépatique non alcoolique/prévention et contrôle , Stéatose hépatique non alcoolique/génétique , Métallothionéine/génétique , Métallothionéine/métabolisme , Régime cétogène/méthodes , Souris , Mâle , Foie/métabolisme , Antioxydants/métabolisme , Récepteur PPAR alpha/métabolisme , Récepteur PPAR alpha/génétique , Modèles animaux de maladie humaine , Métabolisme lipidique , Facteurs temps
9.
Sci Rep ; 14(1): 11940, 2024 05 24.
Article de Anglais | MEDLINE | ID: mdl-38789658

RÉSUMÉ

The classic ketogenic diet is an effective treatment option for drug-resistant epilepsy, but its high fat content challenges patient compliance. Optimizing liver ketone production guided by a method comparing substrates for their ketogenic potential may help to reduce the fat content of the diet without loss in ketosis induction. Here, we present a liver cell assay measuring the ß-hydroxybutyrate (ßHB) yield from fatty acid substrates. Even chain albumin-conjugated fatty acids comprising between 4 and 18 carbon atoms showed a sigmoidal concentration-ßHB response curve (CRC) whereas acetate and omega-3 PUFAs produced no CRC. While CRCs were not distinguished by their half-maximal effective concentration (EC50), they differed by maximum response, which related inversely to the carbon chain length and was highest for butyrate. The assay also suitably assessed the ßHB yield from fatty acid blends detecting shifts in maximum response from exchanging medium chain fatty acids for long chain fatty acids. The assay further detected a dual role for butyrate and hexanoic acid as ketogenic substrate at high concentration and ketogenic enhancer at low concentration, augmenting the ßHB yield from oleic acid and a fatty acid blend. The assay also found propionate to inhibit ketogenesis from oleic acid and a fatty acid blend at low physiological concentration. Although the in vitro assay shows promise as a tool to optimize the ketogenic yield of a fat blend, its predictive value requires human validation.


Sujet(s)
Acide 3-hydroxy-butyrique , Régime cétogène , Hépatocytes , Cétones , Régime cétogène/méthodes , Humains , Hépatocytes/métabolisme , Cétones/métabolisme , Acide 3-hydroxy-butyrique/métabolisme , Épilepsie/diétothérapie , Épilepsie/métabolisme , Acides gras/métabolisme , Épilepsie pharmacorésistante/diétothérapie , Épilepsie pharmacorésistante/métabolisme
10.
Nutrients ; 16(9)2024 Apr 24.
Article de Anglais | MEDLINE | ID: mdl-38732505

RÉSUMÉ

Epilepsy is one of the most disabling neurological diseases. Despite proper pharmacotherapy and the availability of 2nd and 3rd generation antiepileptic drugs, deep brain stimulation, and surgery, up to 30-40% of epilepsy patients remain drug-resistant. Consequences of this phenomenon include not only decreased a quality of life, and cognitive, behavioral, and personal disorders, but also an increased risk of death, i.e., in the mechanism of sudden unexpected death in epilepsy patients (SUDEP). The main goals of epilepsy treatment include three basic issues: achieving the best possible seizure control, avoiding the undesired effects of treatment, and maintaining/improving the quality of patients' lives. Therefore, numerous attempts are made to offer alternative treatments for drug-resistant seizures, an example of which is the ketogenic diet. It is a long-known but rarely used dietary therapy for intractable seizures. One of the reasons for this is the unpalatability of the classic ketogenic diet, which reduces patient compliance and adherence rates. However, its antiseizure effects are often considered to be worth the effort. Until recently, the diet was considered the last-resort treatment. Currently, it is believed that a ketogenic diet should be used much earlier in patients with well-defined indications. In correctly qualified patients, seizure activity may be reduced by over 90% or even abolished for long periods after the diet is stopped. A ketogenic diet can be used in all age groups, although most of the available literature addresses pediatric epilepsy. In this article, we focus on the mechanisms of action, effectiveness, and adverse effects of different variants of the ketogenic diet, including its classic version, a medium-chain triglyceride diet, a modified Atkins diet, and a low glycemic index treatment.


Sujet(s)
Régime cétogène , Épilepsie , Régime cétogène/méthodes , Humains , Épilepsie/diétothérapie , Résultat thérapeutique , Épilepsie pharmacorésistante/diétothérapie , Qualité de vie , Anticonvulsivants/usage thérapeutique , Anticonvulsivants/administration et posologie , Enfant
11.
Nutrients ; 16(10)2024 May 08.
Article de Anglais | MEDLINE | ID: mdl-38794646

RÉSUMÉ

Obesity and metabolic syndrome are linked to steatotic liver disease (SLD), the most common form of chronic liver disease. Lifestyle modifications and dieting are strategies that can prevent metabolic dysfunction-associated steatotic liver disease (MASLD). The very low-calorie ketogenic diet (VLCKD) is a helpful treatment for MASLD and has been recommended for people affected by obesity; we evaluated the effect of gender on steatosis and fibrosis in a cohort of 112 overweight or obese patients undergoing an eight-week treatment with a VLCKD. Differences between the genders in terms of anthropometric measures, body composition, and metabolic indicators were examined before, during, and after the nutritional intervention. At baseline, there were significant differences between men and women in terms of anthropometric parameters, blood pressure, Homeostatic Model Assessment for Insulin Resistance (HOMA-IR), fasting insulin, hepatic markers, and lipid profile. Men had considerably higher levels of liver steatosis (measured by CAP) and liver stiffness (measured by E) under basal conditions than women. After the VLCKD, there were reductions in both genders of controlled attenuation parameter (CAP), body weight, body mass index (BMI), waist circumference, systolic and diastolic blood pressure, insulin resistance, fat mass (FM), free fat mass (FFM), and fasting blood glucose, insulin, glycated hemoglobin (HbA1c), triglycerides, total cholesterol, low-density lipoprotein (LDL) cholesterol, alanine transaminase (ALT), gamma-glutamyl transferase (γGT), and uric acid levels. Only in men, liver stiffness, aspartate aminotransferase (AST), creatinine, and C-reactive protein (CRP) levels significantly decreased. Moreover, men had significantly greater levels of liver steatosis: the male gender featured an increase of 23.96 points of the Fibroscan CAP. Men exhibited higher levels of steatosis and fibrosis than women, and these differences persist despite VLCKD. These gender-specific variations in steatosis and fibrosis levels could be caused by hormonal and metabolic factors, suggesting that different therapeutic strategies might be required depending on the gender.


Sujet(s)
Régime cétogène , Cirrhose du foie , Obésité , Surpoids , Humains , Mâle , Femelle , Régime cétogène/méthodes , Adulte d'âge moyen , Obésité/diétothérapie , Obésité/complications , Cirrhose du foie/diétothérapie , Cirrhose du foie/complications , Adulte , Surpoids/diétothérapie , Surpoids/complications , Facteurs sexuels , Restriction calorique/méthodes , Stéatose hépatique/diétothérapie , Indice de masse corporelle , Insulinorésistance , Composition corporelle , Syndrome métabolique X/diétothérapie , Foie/métabolisme
12.
Nutrition ; 124: 112420, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-38669832

RÉSUMÉ

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.


Sujet(s)
Anxiété , Dépression , Régime cétogène , Santé mentale , Stress psychologique , Humains , Régime cétogène/méthodes , Régime cétogène/psychologie , Mâle , Femelle , Études transversales , Adulte , Adulte d'âge moyen , Dépression/diétothérapie , Stress psychologique/psychologie , Solitude/psychologie , Émotions , Jeune adulte , Enquêtes et questionnaires , Études de cohortes , Sujet âgé , Adolescent
13.
BMJ Open Diabetes Res Care ; 12(2)2024 Apr 27.
Article de Anglais | MEDLINE | ID: mdl-38677719

RÉSUMÉ

Ketogenic diets have been widely used for weight loss and are increasingly used in the management of type 2 diabetes. Despite evidence that ketones have multiple positive effects on kidney function, common misconceptions about ketogenic diets, such as high protein content and acid load, have prevented their widespread use in individuals with impaired kidney function. Clinical trial evidence focusing on major adverse kidney events is sparse. The aim of this review is to explore the effects of a ketogenic diet, with an emphasis on the pleiotropic actions of ketones, on kidney health. Given the minimal concerns in relation to the potential renoprotective effects of a ketogenic diet, future studies should evaluate the safety and efficacy of ketogenic interventions in kidney disease.


Sujet(s)
Diabète de type 2 , Régime cétogène , Régime cétogène/méthodes , Humains , Diabète de type 2/diétothérapie , Néphropathies diabétiques/diétothérapie , Cétones , Maladies du rein/diétothérapie
14.
Cancer Res ; 84(10): 1597-1612, 2024 May 15.
Article de Anglais | MEDLINE | ID: mdl-38588411

RÉSUMÉ

Resistance to immune checkpoint blockade (ICB) therapy represents a formidable clinical challenge limiting the efficacy of immunotherapy. In particular, prostate cancer poses a challenge for ICB therapy due to its immunosuppressive features. A ketogenic diet (KD) has been reported to enhance response to ICB therapy in some other cancer models. However, adverse effects associated with continuous KD were also observed, demanding better mechanistic understanding and optimized regimens for using KD as an immunotherapy sensitizer. In this study, we established a series of ICB-resistant prostate cancer cell lines and developed a highly effective strategy of combining anti-PD1 and anti-CTLA4 antibodies with histone deacetylase inhibitor (HDACi) vorinostat, a cyclic KD (CKD), or dietary supplementation of the ketone body ß-hydroxybutyrate (BHB), which is an endogenous HDACi. CKD and BHB supplementation each delayed prostate cancer tumor growth as monotherapy, and both BHB and adaptive immunity were required for the antitumor activity of CKD. Single-cell transcriptomic and proteomic profiling revealed that HDACi and ketogenesis enhanced ICB efficacy through both cancer cell-intrinsic mechanisms, including upregulation of MHC class I molecules, and -extrinsic mechanisms, such as CD8+ T-cell chemoattraction, M1/M2 macrophage rebalancing, monocyte differentiation toward antigen-presenting cells, and diminished neutrophil infiltration. Overall, these findings illuminate a potential clinical path of using HDACi and optimized KD regimens to enhance ICB therapy for prostate cancer. SIGNIFICANCE: Optimized cyclic ketogenic diet and 1,3-butanediol supplementation regimens enhance the efficacy of immune checkpoint blockade in prostate cancer through epigenetic and immune modulations, providing dietary interventions to sensitize tumors to immunotherapy.


Sujet(s)
Régime cétogène , Résistance aux médicaments antinéoplasiques , Épigenèse génétique , Inhibiteurs de points de contrôle immunitaires , Tumeurs de la prostate , Mâle , Régime cétogène/méthodes , Tumeurs de la prostate/traitement médicamenteux , Tumeurs de la prostate/immunologie , Tumeurs de la prostate/diétothérapie , Tumeurs de la prostate/génétique , Tumeurs de la prostate/anatomopathologie , Humains , Inhibiteurs de points de contrôle immunitaires/pharmacologie , Inhibiteurs de points de contrôle immunitaires/usage thérapeutique , Souris , Épigenèse génétique/effets des médicaments et des substances chimiques , Animaux , Lignée cellulaire tumorale , Vorinostat/pharmacologie , Vorinostat/usage thérapeutique , Vorinostat/administration et posologie , Inhibiteurs de désacétylase d'histone/pharmacologie , Inhibiteurs de désacétylase d'histone/usage thérapeutique , Acide 3-hydroxy-butyrique , Tests d'activité antitumorale sur modèle de xénogreffe , Récepteur-1 de mort cellulaire programmée/immunologie , Récepteur-1 de mort cellulaire programmée/antagonistes et inhibiteurs
15.
Nutr. hosp ; 41(2): 477-488, Mar-Abr. 2024. tab
Article de Espagnol | IBECS | ID: ibc-232665

RÉSUMÉ

La dieta cetogénica constituyó desde su inicio un planteamiento sorprendente para el tratamiento de la epilepsia. Someter al organismo a un cambio en la obtención de energía, pasando de depender de los carbohidratos a hacerlo de las grasas, pone en marcha toda una serie de rutas bioquímicas que, de forma independiente pero también complementaria, dan lugar a un conjunto de efectos que benefician al paciente. Esta búsqueda de su mecanismo de acción, de idear cómo mejorar el cumplimiento y de aprovecharla para otras enfermedades ha marcado su trayectoria. En este artículo se revisan someramente estos aspectos, haciendo hincapié en la importancia de seguir realizando investigación básica y clínica para que este tratamiento pueda aplicarse con bases científicas sólidas.(AU)


The ketogenic diet was an amazing approach to treating epilepsy from its beginning. The body undergoes a change in obtaining energy, going from depending on carbohydrates to depending on fats, and then a whole series of biochemical routes are launched that, independently but also complementary, give rise to a set of effects that benefit the patient. This search for its mechanism of action, of devising how to improve compliance and take advantage of it for other diseases has marked its trajectory. This article briefl y reviews these aspects, emphasizing the importance of continuing to carry out basic and clinical research so that this treatment can be applied with solid scientific bases.(AU)


Sujet(s)
Humains , Mâle , Femelle , Nourrisson , Enfant d'âge préscolaire , Enfant , Adolescent , Régime cétogène/méthodes , Erreurs innées du métabolisme des stéroïdes , Épilepsie/thérapie , Diétothérapie
16.
Nutr Hosp ; 41(2): 477-488, 2024 Apr 26.
Article de Espagnol | MEDLINE | ID: mdl-38450481

RÉSUMÉ

Introduction: The ketogenic diet was an amazing approach to treating epilepsy from its beginning. The body undergoes a change in obtaining energy, going from depending on carbohydrates to depending on fats, and then a whole series of biochemical routes are launched that, independently but also complementary, give rise to a set of effects that benefit the patient. This search for its mechanism of action, of devising how to improve compliance and take advantage of it for other diseases has marked its trajectory. This article briefly reviews these aspects, emphasizing the importance of continuing to carry out basic and clinical research so that this treatment can be applied with solid scientific bases.


Introducción: La dieta cetogénica constituyó desde su inicio un planteamiento sorprendente para el tratamiento de la epilepsia. Someter al organismo a un cambio en la obtención de energía, pasando de depender de los carbohidratos a hacerlo de las grasas, pone en marcha toda una serie de rutas bioquímicas que, de forma independiente pero también complementaria, dan lugar a un conjunto de efectos que benefician al paciente. Esta búsqueda de su mecanismo de acción, de idear cómo mejorar el cumplimiento y de aprovecharla para otras enfermedades ha marcado su trayectoria. En este artículo se revisan someramente estos aspectos, haciendo hincapié en la importancia de seguir realizando investigación básica y clínica para que este tratamiento pueda aplicarse con bases científicas sólidas.


Sujet(s)
Régime cétogène , Épilepsie , Régime cétogène/méthodes , Humains , Épilepsie/diétothérapie , Histoire du 20ème siècle
17.
Nutrients ; 16(6)2024 Mar 13.
Article de Anglais | MEDLINE | ID: mdl-38542723

RÉSUMÉ

Mitochondrial diseases (MDs) are a heterogeneous group of disorders resulting from abnormal mitochondrial function. Currently, there is no causal treatment for MDs. The aim of the study was to assess the effectiveness and safety of the ketogenic diet (KD) in patients with MD and to analyse selected biochemical and clinical parameters evaluating the effectiveness of KD treatment in patients with MDs. A total of 42 paediatric patients were assigned to four groups: group 1-patients with MD in whom KD treatment was started (n = 11); group 2-patients with MD remaining on an ordinary diet (n = 10); group 3-patients without MD in whom KD treatment was initiated (n = 10), group 4-patients without MD on a regular diet (n = 11). Clinical improvement was observed in 9/11 patients with MD treated with KD. Among patients with MD without KD, the clinical condition deteriorated in 7/10 patients, improved in 2/10 patients, and remained unchanged in one patient. Adverse events of KD occurred with a comparable frequency in groups 1 and 3. There was no significant difference in changes in biomarker concentrations over the course of the study among patients treated and untreated with KD.


Sujet(s)
Régime cétogène , Maladies mitochondriales , Enfant , Humains , Régime cétogène/effets indésirables , Régime cétogène/méthodes , Régime pauvre en glucides/méthodes , Mitochondries , Résultat thérapeutique
18.
Crit Rev Oncol Hematol ; 196: 104264, 2024 Apr.
Article de Anglais | MEDLINE | ID: mdl-38341120

RÉSUMÉ

The effect of calorie restriction, fasting, and ketogenic diets on the treatment of liver cancer remains uncertain. Therefore, we conducted a systematic review to evaluate the effect of restrictive diets on the development and progression of liver cancer in animal models. We did a meta-analysis using the Cochrane Collaboration's Review Manager software, with the random effects model and the inverse variance technique. We examined 19 studies that were conducted between 1983 and 2020. Of these, 63.2% investigated calorie restriction, 21.0% experimented with a ketogenic diet, and 15.8% investigated the effects of fasting. The intervention lasted anything from 48 h to 221 weeks. Results showed that restrictive diets may reduce tumor incidence and progression, with a significant reduction in the risk of liver cancer development. Thereby, our results suggest that putting limits on what you eat may help treat liver cancer in more ways than one.


Sujet(s)
Régime cétogène , Tumeurs du foie , Animaux , Humains , Régime cétogène/méthodes , Restriction calorique , Jeûne , Tumeurs du foie/épidémiologie , Tumeurs du foie/étiologie , Tumeurs du foie/prévention et contrôle
19.
J Child Neurol ; 39(1-2): 45-54, 2024 Jan.
Article de Anglais | MEDLINE | ID: mdl-38314711

RÉSUMÉ

BACKGROUND: The ketogenic diet may be difficult for some patients and their families to implement and can impact physical, emotional, and social well-being. METHODS: Through principles of fundamental qualitative description, we completed an exploratory study on parents' experiences and expectations on the use and efficacy of the ketogenic diet for children with medically refractory epilepsy. RESULTS: Seventeen parents (10 mothers and 7 fathers) of 12 children with epilepsy participated. At the time of the interview, parents had experienced an average of 25 months of ketogenic diet treatment for their child (range 2 months to 98 months). Half of the caregivers learned about the ketogenic diet from their neurologist, whereas the remainder had heard about it from another source (ie, the internet). Most caregivers' (n = 13) diet expectations were related to seizure control. However, child development (n = 5) and quality of life (n = 5) were also crucial to some. Physical impacts of the diet were most commonly gastrointestinal for children (n = 9). Social and emotional effects were noted in some older children with typical development. Most caregivers described negative impacts on finances (n = 15), relationships (n = 14), and emotional well-being (ie, stress) (n = 12). Caregivers benefited from the ketogenic diet team's regular communication, close follow-up, and family-centered care. CONCLUSIONS: Despite the impacts that the ketogenic diet may have on caregivers' emotional and social well-being, the positive impacts of the diet were felt to outweigh any perceived risks. Effects (both positive and negative) on quality of life and child development (eg, social, emotional, cognitive) are essential for caregivers and require additional investigation.


Sujet(s)
Régime cétogène , Parents , Qualité de vie , Humains , Régime cétogène/méthodes , Régime cétogène/psychologie , Femelle , Mâle , Enfant , Enfant d'âge préscolaire , Parents/psychologie , Qualité de vie/psychologie , Adulte , Nourrisson , Adolescent , Épilepsie pharmacorésistante/diétothérapie , Épilepsie pharmacorésistante/psychologie , Aidants/psychologie
20.
Ir J Med Sci ; 193(3): 1495-1503, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38315271

RÉSUMÉ

The ketogenic diet (KD), characterized by high-fat and low-carbohydrate intake, is currently gaining widespread popularity as a treatment for drug-resistant epilepsy (DRE). In addition to the traditional ketogenic diet, several variants have been introduced to enhance compliance and flexibility, such as the modified Atkins diet (MAD) and the low glycemic index diet (LGID). These adaptations aim to provide patients with more manageable and sustainable options while harnessing the potential therapeutic benefits of DRE. The objective of this study is to evaluate the efficacy and safety of the KD in pediatric patients who exhibit DRE. In this study, we conducted a thorough review of existing literature by searching Cochrane, Embase, Medline, and PubMed. Our approach involved predefined criteria for data extraction and the assessment of study quality. Eleven RCTs with 788 participants were included in this study. The pooled effect estimates revealed a significant association between dietary interventions and seizure frequency reduction of > 50% (OR 6.68, 96% CI 3.52, 12.67) and > 90% (OR 4.37, 95% CI 2.04, 9.37). Dietary interventions also increased the odds of achieving seizure freedom (OR 4.13, 95% CI 1.61, 10.60). The common adverse effects included constipation (39.07%) and vomiting (10%). In conclusion, dietary interventions, notably the KD, hold promise for pediatric DRE, reducing seizures and achieving freedom. These non-pharmacological options improve the quality of life of non-responsive and non-surgical patients. The KD has emerged as a potential therapeutic approach. Further research is needed to address the limitations and investigate their long-term effects.


Sujet(s)
Régime cétogène , Épilepsie pharmacorésistante , Humains , Régime cétogène/méthodes , Épilepsie pharmacorésistante/diétothérapie , Enfant
SÉLECTION CITATIONS
DÉTAIL DE RECHERCHE
...