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Ketogenic diet therapy for pediatric epilepsy is associated with alterations in the human gut microbiome that confer seizure resistance in mice

ABSTRACT: To investigate the effects of transplanted pre-ketogenic diet (pre-KD) and post-ketogenic diet (post-KD) human fecal microbiota on recipient germ-free swiss webster brain gene expression profiles

ORGANISM(S): Mus musculus

PROVIDER: GSE225682 | GEO | 2023/12/01

REPOSITORIES: GEO

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Gene expression changes in ketogenic and high-fat diets

Project description:The ketone body β-hydroxybutyrate (BHB) is produced during dietary restriction, fasting, and exercise. A ketogenic diet (KD) results in long-term production of BHB outside of these contexts. We sought to determine a protein-matched, non-obese ketogenic diet (KD) would affect the longevity and healthspan of C57BL/6 male mice. We find that feeding KD every-other-week to prevent obesity (cyclic KD) reduces mid-life mortality but does not affect maximum lifespan. Similar feeding of a non-ketogenic high-fat/low-carbohydrate (HF) diet may have an intermediate effect on mortality. Cyclic KD improves memory performance in old age, while modestly improving composite measures of healthspan. RNAseq gene expression analysis identifies down-regulation of insulin, TOR, and fatty acid synthesis pathways as possible longevity mechanisms common to KD and HF. However, up-regulation of fasting-related PPARα target genes is unique to KD, consistent across tissues, and preserved in old age, suggesting a mechanism for an incremental benefit from KD. In all, we show that a non-obese ketogenic diet improves survival, memory, and healthspan into old age. These gene expression studies were carried out on 12 month-old male C56BL/6 mice from the NIA Aged Rodent Colony, habituated to AIN-93M control diet and then either maintained on this diet or switched for one week to a 75% kcal fat non-ketogenic high-fat diet or a 90% kcal fat ketogenic diet (all diets with 10% kcal from carbohydrates). Tissues were harvested in the middle of the nighttime feeding period (MN-3am).

2017-09-05 | GSE101657 | GEO

Transcription profiling of mouse livers from animals fed a ketogenic diet (KD), a diet high in fat and low in carbohydrates

Project description:Analysis of liver gene transcription during feeding of a ketogenic diet. Ketogenic diets may alter physiologic and metabolic profiles in a direction that favors weight loss. C57BL/6J mice were maintained for six weeks on either chow or ketogenic diet. Mice eating KD had lower weights, 90% reduction in insulin levels and increased energy expenditure compared to animals fed chow. Despite consumption of a very high fat diet serum lipids remained normal. Here we show that consumption of KD shifted liver metabolism to drastically increased fatty acid oxidation. Concurrently, expression of genes involved in fatty acid synthesis were markedly suppressed. Reference: A high fat, ketogenic diet induces a unique metabolic state in mice. Kennedy AR, Pissios P, Out H, Xue B, Asakura K, Furukawa N, Marino FE, Liu FF, Kahn BB, Liberman TA, Maratos-Flier E. in press, 2007, Am J Physiol Metab 292. Experiment Overall Design: Eight week old C57BL/6 mice were fed either chow (Labdiet 5008, Pharmserv) or KD (F3666, Bio-Serv) for six weeks. Livers were harvested in the morning in ad lib fed animals. Total RNA from 2-3 animals in each group was used for Affymetrix analysis.

2007-12-13 | E-GEOD-7699 | biostudies-arrayexpress

A high fat, ketogenic diet induces a unique metabolic state in mice.

2007-05-04 | GSE7699 | GEO

NINDS Rat Epilepsy Diet

Project description:The ketogenic diet (KD) is an anticonvulsant treatment that has been used to manage medically-intractable epilepsies. The KD requires 10-12 days to become maximally effective, suggesting that changes in gene expression are involved in its anticonvulsant action. Using the Affymetrix rat arrays (RAE230A), 6 control samples and 5 KD samples were run. Keywords: other

2004-03-29 | GSE1155 | GEO

Impact of Ketogenic diet on aging associated gene expression in the brain.

Project description:The Ketogenic Diet (KD) was shown to extend lifespan and preserve memory in aged mice. We carried out RNA-seq on brains of mice aged 13-26 months on standard Carbohydrate-rich control Diet (CD) vs KD, to better understand KD's mechanism for memory preservation.

2024-10-21 | GSE230324 | GEO

Transcription profiling of rat brain hippocampi of animals fed the ketogenic diet (KD) to provide insight into the anticonvulsant action of KD

2007-10-27 | E-GEOD-1155 | biostudies-arrayexpress

Ketogenic diet activates protective γδ T cell responses against influenza virus infection

Project description:Influenza A virus (IAV) infection-associated morbidity and mortality are a key global healthcare concern, necessitating the identification of novel therapies capable of reducing the severity of IAV infections. In this study, we show that the consumption of a low-carbohydrate, high-fat ketogenic diet (KD) protects mice from lethal IAV infection and disease. KD feeding resulted in an expansion of γδ T cells in the lung that improved barrier functions, thereby enhancing anti-viral resistance. Expansion of these protective γδ T cells required metabolic adaptation to a ketogenic diet, as neither feeding mice a high-fat high-carbohydrate diet nor providing chemical ketone body substrate that bypasses hepatic ketogenesis protected against infection. Therefore, KD mediated immune-metabolic integration represents a viable avenue towards preventing or alleviating influenza disease.

2019-08-29 | GSE136536 | GEO

Kainic acid-administered Rat brain: control vs Ketogenic diet-fed

Project description:The ketogenic diet has long been used to treat epilepsy, but its mechanism is not yet clearly understood. To explore the potential mechanism, the changes in gene expression induced by the ketogenic diet in the rat kainic acid (KA) epilepsy model were analyzed. Two-condition experiment, Normal diet-fed rat brain vs. Ketogenic diet-fed rat brain. Duplicate per array

2010-05-19 | E-GEOD-19277 | biostudies-arrayexpress

Effects of ketogenic diet and caloric restriction on ischemic tolerance

Project description:The ketogenic diet (KD) is used to treat a number of brain pathologies. In this study, we undertook detailed transcriptomic profiling of rat brain after KD and ischemic stroke to uncover effects of KD and its specific mechanisms. We evaluated how a 2-month KD affected gene expression in intact brain tissue and after middle cerebral artery occlusion (MCAO). We found transcriptional reprogramming in the brain after stroke and KD treatment. KD altered the expression of genes involved in the regulation of glucose and fatty acid metabolism, mitochondrial function, immune response, Wnt-associated signaling, stem cell development, and neurotransmission in both intact rats and after MCAO.

2024-10-11 | GSE272485 | GEO

Myocardial expression data from ketogenic diet-fed mice

Project description:Specific pathogen free wild-type C57Bl/6 male mice fed ketogenic diet (Bio-Serv AIN-76-A) for 4 weeks Keywords: RNA Expression Array Hearts from 12 week-old mice that were maintained on a standard polysacchardide-rich chow until the age of 8 weeks, at which time they were switched to a ketogenic diet (ad libitum) and maintained for 4 additional weeks prior to collection of tissues

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