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Armstrong OJ, Neal ES, Vidovic D, Xu W, Borges K. Transient anticonvulsant effects of time-restricted feeding in the 6-Hz mouse model. Epilepsy Behav 2024; 151:109618. [PMID: 38184948 DOI: 10.1016/j.yebeh.2023.109618] [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: 11/09/2023] [Revised: 12/23/2023] [Accepted: 12/27/2023] [Indexed: 01/09/2024]
Abstract
INTRODUCTION Intermittent fasting enhances neural bioenergetics, is neuroprotective, and elicits antioxidant effects in various animal models. There are conflicting findings on seizure protection, where intermittent fasting regimens often cause severe weight loss resembling starvation which is unsustainable long-term. Therefore, we tested whether a less intensive intermittent fasting regimen such as time-restricted feeding (TRF) may confer seizure protection. METHODS Male CD1 mice were assigned to either ad libitum-fed control, continuous 8 h TRF, or 8 h TRF with weekend ad libitum food access (2:5 TRF) for one month. Body weight, food intake, and blood glucose levels were measured. Seizure thresholds were determined at various time points using 6-Hz and maximal electroshock seizure threshold (MEST) tests. Protein levels and mRNA expression of genes, enzyme activity related to glucose metabolism, as well as mitochondrial dynamics were assessed in the cortex and hippocampus. Markers of antioxidant defence were evaluated in the plasma, cortex, and liver. RESULTS Body weight gain was similar in the ad libitum-fed and TRF mouse groups. In both TRF regimens, blood glucose levels did not change between the fed and fasted state and were higher during fasting than in the ad libitum-fed groups. Mice in the TRF group had increased seizure thresholds in the 6-Hz test on day 15 and on day 19 in a second cohort of 2:5 TRF mice, but similar seizure thresholds at other time points compared to ad libitum-fed mice. Continuous TRF did not alter MEST seizure thresholds on day 28. Mice in the TRF group showed increased maximal activity of pyruvate dehydrogenase in the cortex, which was accompanied by increased protein levels of mitochondrial pyruvate carrier 1 in the cortex and hippocampus. There were no other major changes in protein or mRNA levels associated with energy metabolism and mitochondrial dynamics in the brain, nor markers of antioxidant defence in the brain, liver, or plasma. CONCLUSIONS Both continuous and 2:5 TRF regimens transiently increased seizure thresholds in the 6-Hz model at around 2 weeks, which coincided with stability of blood glucose levels during the fed and fasted periods. Our findings suggest that the lack of prolonged anticonvulsant effects in the acute electrical seizure models employed may be attributed to only modest metabolic and antioxidant adaptations found in the brain and liver. Our findings underscore the potential therapeutic value of TRF in managing seizure-related conditions.
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Affiliation(s)
- Oliver J Armstrong
- School of Biomedical Sciences, Skerman Building 65, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Elliott S Neal
- School of Biomedical Sciences, Skerman Building 65, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Diana Vidovic
- School of Biomedical Sciences, Medical Building 181, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Weizhi Xu
- School of Biomedical Sciences, Skerman Building 65, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Karin Borges
- School of Biomedical Sciences, Skerman Building 65, The University of Queensland, St. Lucia, QLD 4072, Australia.
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2
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The Effects of Dietary Interventions on Brain Aging and Neurological Diseases. Nutrients 2022; 14:nu14235086. [PMID: 36501116 PMCID: PMC9740746 DOI: 10.3390/nu14235086] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/17/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
Dietary interventions can ameliorate age-related neurological decline. Decades of research of in vitro studies, animal models, and clinical trials support their ability and efficacy to improve behavioral outcomes by inducing biochemical and physiological changes that lead to a more resilient brain. Dietary interventions including calorie restriction, alternate day fasting, time restricted feeding, and fasting mimicking diets not only improve normal brain aging but also slow down, or even reverse, the progression of neurological diseases. In this review, we focus on the effects of intermittent and periodic fasting on improving phenotypic outcomes, such as cognitive and motor-coordination decline, in the normal aging brain through an increase in neurogenesis and synaptic plasticity, and decrease in neuroinflammation, mitochondrial dysfunction, and oxidative stress. We summarize the results of various dietary interventions in animal models of age-related neurological diseases such as Alzheimer's disease, Parkinson's disease, epilepsy, and Multiple Sclerosis and discuss the results of clinical trials that explore the feasibility of dietary interventions in the prevention and treatment of these diseases.
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Yuskaitis CJ, Modasia JB, Schrötter S, Rossitto LA, Groff KJ, Morici C, Mithal DS, Chakrabarty RP, Chandel NS, Manning BD, Sahin M. DEPDC5-dependent mTORC1 signaling mechanisms are critical for the anti-seizure effects of acute fasting. Cell Rep 2022; 40:111278. [PMID: 36044864 PMCID: PMC9508617 DOI: 10.1016/j.celrep.2022.111278] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/11/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022] Open
Abstract
Caloric restriction and acute fasting are known to reduce seizures but through unclear mechanisms. mTOR signaling has been suggested as a potential mechanism for seizure protection from fasting. We demonstrate that brain mTORC1 signaling is reduced after acute fasting of mice and that neuronal mTORC1 integrates GATOR1 complex-mediated amino acid and tuberous sclerosis complex (TSC)-mediated growth factor signaling. Neuronal mTORC1 is most sensitive to withdrawal of leucine, arginine, and glutamine, which are dependent on DEPDC5, a component of the GATOR1 complex. Metabolomic analysis reveals that Depdc5 neuronal-specific knockout mice are resistant to sensing significant fluctuations in brain amino acid levels after fasting. Depdc5 neuronal-specific knockout mice are resistant to the protective effects of fasting on seizures or seizure-induced death. These results establish that acute fasting reduces seizure susceptibility in a DEPDC5-dependent manner. Modulation of nutrients upstream of GATOR1 and mTORC1 could offer a rational therapeutic strategy for epilepsy treatment.
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Affiliation(s)
- Christopher J Yuskaitis
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Division of Epilepsy and Clinical Neurophysiology and Epilepsy Genetics Program, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jinita B Modasia
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sandra Schrötter
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Leigh-Ana Rossitto
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Karenna J Groff
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Christopher Morici
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Divakar S Mithal
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Section of Neurology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Ram P Chakrabarty
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Navdeep S Chandel
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Brendan D Manning
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Mustafa Sahin
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Rosamund Stone Zander Translational Neuroscience Center, Boston Children's Hospital, Boston, MA, USA.
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4
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Rubio C, López-López F, Rojas-Hernández D, Moreno W, Rodríguez-Quintero P, Rubio-Osornio M. Caloric restriction: Anti-inflammatory and antioxidant mechanisms against epileptic seizures. Epilepsy Res 2022; 186:107012. [PMID: 36027691 DOI: 10.1016/j.eplepsyres.2022.107012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/26/2022] [Accepted: 08/13/2022] [Indexed: 11/03/2022]
Abstract
Caloric restriction (CR) possesses different cellular mechanisms. Though there are still gaps in the literature regarding its plausible beneficial effects, the suggestion that this alternative therapy can improve the inflammatory and antioxidant response to control epileptic seizures is explored throughout this study. Epilepsy is the second most prevalent neurodegenerative disease in the world. However, the appropriate mechanisms for it to be fully controlled are still unknown. Neuroinflammation and oxidative stress promote epileptic seizures' appearance and might even aggravate them. There is growing evidence that caloric restriction has extensive anti-inflammatory and antioxidant properties. For instance, nuclear factor erythroid 2-related factor 2 (Nrf2) and all-trans retinoic acid (ATRA) have been proposed to induce antioxidant processes and ulteriorly improve the disease progression. Caloric restriction can be an option for those patients with refractory epilepsy since it allows for anti-inflammatory and antioxidant properties to evolve within the brain areas involved.
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Affiliation(s)
- Carmen Rubio
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Mexico
| | - Felipe López-López
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Mexico; Facultad de Medicina, Universidad Autónoma de Baja California, Campus Mexicali, Mexico
| | - Daniel Rojas-Hernández
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Mexico; Universidad Autónoma Metropolitana, Unidad Xochimilco, Mexico
| | - Wilhelm Moreno
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Mexico; Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico
| | - Paola Rodríguez-Quintero
- Departamento de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Mexico; Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico
| | - Moisés Rubio-Osornio
- Departamento de Neuroquímica, Instituto Nacional de Neurología y Neurocirugía, Mexico.
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5
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Fedotova АА, Tiaglik АB, Semyanov АV. Effect of Diet as a Factor of Exposome
on Brain Function. J EVOL BIOCHEM PHYS+ 2021. [DOI: 10.1134/s0022093021030108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rubio C, Luna R, Rosiles A, Rubio-Osornio M. Caloric Restriction and Ketogenic Diet Therapy for Epilepsy: A Molecular Approach Involving Wnt Pathway and K ATP Channels. Front Neurol 2020; 11:584298. [PMID: 33250850 PMCID: PMC7676225 DOI: 10.3389/fneur.2020.584298] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 09/28/2020] [Indexed: 12/30/2022] Open
Abstract
Epilepsy is a neurological disorder in which, in many cases, there is poor pharmacological control of seizures. Nevertheless, it may respond beneficially to alternative treatments such as dietary therapy, like the ketogenic diet or caloric restriction. One of the mechanisms of these diets is to produce a hyperpolarization mediated by the adenosine triphosphate (ATP)-sensitive potassium (KATP) channels (KATP channels). An extracellular increase of K+ prevents the release of Ca2+ by inhibiting the signaling of the Wnt pathway and the translocation of β-catenin to the cell nucleus. Wnt ligands hyperpolarize the cells by activating K+ current by Ca2+. Each of the diets described in this paper has in common a lower use of carbohydrates, which leads to biochemical, genetic processes presumed to be involved in the reduction of epileptic seizures. Currently, there is not much information about the genetic processes implicated as well as the possible beneficial effects of diet therapy on epilepsy. In this review, we aim to describe some of the possible genes involved in Wnt pathways, their regulation through the KATP channels which are implicated in each one of the diets, and how they can reduce epileptic seizures at the molecular level.
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Affiliation(s)
- Carmen Rubio
- Neurophysiology Department, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, Mexico City, Mexico
| | - Rudy Luna
- Neurophysiology Department, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, Mexico City, Mexico
| | - Artemio Rosiles
- Experimental Laboratory of Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, Mexico City, Mexico
| | - Moisés Rubio-Osornio
- Experimental Laboratory of Neurodegenerative Diseases, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez, Mexico City, Mexico
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7
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Anticonvulsant mechanisms of the ketogenic diet and caloric restriction. Epilepsy Res 2020; 168:106499. [PMID: 33190066 DOI: 10.1016/j.eplepsyres.2020.106499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 01/29/2023]
Abstract
Many treatments have been proposed to control epileptic seizures, such as the ketogenic diet and caloric restriction. However, seizure control has not yet been improved completely in all patients. Probably, due to the lack of understanding regarding this neurological disorder pathogenesis or pathophysiology, including its molecular approach. Currently, there is not much information about the molecular processes and genes involved, and their relation to the possible beneficial effects of diet therapy on epilepsy. The ketogenic diet and caloric restriction are implicated in potential anti-seizure mechanisms related to the gut microbiome, metabolic pathways, hormones and neurotransmitters, mitochondria improvement, a role in inflammation, and oxidative stress, among others. In this review, we pretend to describe the molecular mechanism and the possible genes involved in the different ketogenic diet and caloric restriction mechanisms of action described to decrease neural excitability and, therefore, epileptic seizures, especially when conventional treatment is not enough to achieve control of epilepsy.
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Santillán-Cigales JJ, Mercado-Gómez OF, Arriaga-Ávila V, Landgrave-Gómez J, Guevara-Guzmán R. Daytime-restricted feeding modulates the expression of inflammatory mediators and diminishes reactive astrogliosis and microgliosis following status epilepticus. Brain Res 2020; 1734:146724. [PMID: 32057806 DOI: 10.1016/j.brainres.2020.146724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/07/2020] [Accepted: 02/09/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Jair Santillán-Cigales
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico
| | - Octavio Fabián Mercado-Gómez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico
| | - Virginia Arriaga-Ávila
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico
| | - Jorge Landgrave-Gómez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico.
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9
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Yin B, Jiang H, Liu X, Guo SW. Enriched Environment Decelerates the Development of Endometriosis in Mouse. Reprod Sci 2020; 27:1423-1435. [PMID: 32318984 DOI: 10.1007/s43032-019-00117-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/21/2019] [Indexed: 12/16/2022]
Abstract
We tested the hypothesis that enriched environment (EE), consisting of enlarged space, and increased physical activity and social interactions, hinders the development of endometriosis through attenuated adrenergic signaling, enhanced autophagy, and reduced leptin levels. Two mouse experiments were performed. In Experiment 1, 40 female Balb/C mice were randomly divided into four equal-sized groups, the SE (standard environment), EE, p-EE (EE instituted after endometriosis induction), and the d-EE (SE housing but received uterine fragments from EE donors) groups. Housing intervention was initiated 3 weeks before the induction of endometriosis and continued for 3 weeks after induction. In Experiment 2, 20 female mice were randomly divided into SE and EE groups, and the plasma leptin levels were measured. We measured lesion weight and hotplate latency and performed Masson trichrome staining as well as immunohistochemistry analysis of β2 adrenergic receptor (ADRB2), dopamine receptor D2 (DRD2), vascular endothelial growth factor (VEGF), and microtubule-associated protein light chain 3 (LC3). We found that EE reduced the lesion weight by 40.8% as compared with SE mice, but the reduction in p-EE and d-EE mice did not reach statistical significance. EE significantly reduced staining levels of ADRB2 and VEGF as well as the extent of lesional fibrosis but increased staining levels of LC3 and DRD2 in lesions as compared with the SE group. EE mice had reduced plasma leptin levels as compared with SE mice. Thus, EE decelerates the development of endometriosis and fibrogenesis and improved generalized hyperalgesia, possibly through increased DRD2 expression but decreased expression of ADRB2 and VEGF as well as enhanced autophagy and reduced leptin level.
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Affiliation(s)
- Bo Yin
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China
| | - Hongyuan Jiang
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China
| | - Xishi Liu
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China.
| | - Sun-Wei Guo
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China.
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Unnikrishnan A, Kurup K, Salmon AB, Richardson A. Is Rapamycin a Dietary Restriction Mimetic? J Gerontol A Biol Sci Med Sci 2020; 75:4-13. [PMID: 30854544 PMCID: PMC6909904 DOI: 10.1093/gerona/glz060] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 02/28/2019] [Indexed: 01/21/2023] Open
Abstract
Since the initial suggestion that rapamycin, an inhibitor of target of rapamycin (TOR) nutrient signaling, increased lifespan comparable to dietary restriction, investigators have viewed rapamycin as a potential dietary restriction mimetic. Both dietary restriction and rapamycin increase lifespan across a wide range of evolutionarily diverse species (including yeast, Caenorhabditis elegans, Drosophila, and mice) as well as reducing pathology and improving physiological functions that decline with age in mice. The purpose of this article is to review the research comparing the effect of dietary restriction and rapamycin in mice. The current data show that dietary restriction and rapamycin have different effects on many pathways and molecular processes. In addition, these interventions affect the lifespan of many genetically manipulated mouse models differently. In other words, while dietary restriction and rapamycin may have similar effects on some pathways and processes; overall, they affect many pathways/processes quite differently. Therefore, rapamycin is likely not a true dietary restriction mimetic. Rather dietary restriction and rapamycin appear to be increasing lifespan and retarding aging largely through different mechanisms/pathways, suggesting that a combination of dietary restriction and rapamycin will have a greater effect on lifespan than either manipulation alone.
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Affiliation(s)
- Archana Unnikrishnan
- Reynolds Oklahoma Center on Aging and Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City
| | - Kavitha Kurup
- Reynolds Oklahoma Center on Aging and Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City
| | - Adam B Salmon
- Department of Molecular Medicine and the Sam and Ann Barhop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio,Geratric Research Education and Clinical Center, South Texas Veterans Health Care System, San Antonio
| | - Arlan Richardson
- Reynolds Oklahoma Center on Aging and Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City,Oklahoma City VA Medical Center, Oklahoma,Address correspondence to: Arlan Richardson, PhD, Department of Geriatric Medicine, University of Oklahoma Health Sciences Center, 975 NE 10th Street, BRC 1372, Oklahoma City, OK 73104. E-mail:
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Rubio Osornio MDC, Custodio Ramírez V, Calderón Gámez D, Paz Tres C, Carvajal Aguilera KG, Phillips Farfán BV. Metformin Plus Caloric Restriction Show Anti-epileptic Effects Mediated by mTOR Pathway Inhibition. Cell Mol Neurobiol 2018; 38:1425-1438. [PMID: 30132243 DOI: 10.1007/s10571-018-0611-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 08/07/2018] [Indexed: 01/28/2023]
Abstract
Caloric restriction (CR) has anti-epileptic effects in different animal models, at least partially due to inhibition of the mechanistic or mammalian target of rapamycin (mTOR) signaling pathway. Adenosine monophosphate-activated protein kinase (AMPK) inhibits mTOR cascade function if energy levels are low. Since hyper-activation of mTOR participates in epilepsy, its inhibition results in beneficial anti-convulsive effects. A way to attain this is to activate AMPK with metformin. The effects of metformin, alone or combined with CR, on the electrical kindling epilepsy model and the mTOR cascade in the hippocampus and the neocortex were studied. Combined metformin plus CR beneficially affected many kindling aspects, especially those relating to generalized convulsive seizures. Therefore, metformin plus CR could decrease measures of epileptic activity in patients with generalized convulsive seizures. Patients that are obese, overweight or that have metabolic syndrome in addition to having an epileptic disease are an ideal population for clinical trials to test the effectiveness of metformin plus CR.
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Affiliation(s)
- María Del Carmen Rubio Osornio
- Laboratorio de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Av. Insurgentes Sur 3877, Col. La Fama, Del. Tlalpan, 14269, Mexico City, Mexico
| | - Verónica Custodio Ramírez
- Laboratorio de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Av. Insurgentes Sur 3877, Col. La Fama, Del. Tlalpan, 14269, Mexico City, Mexico
| | - Daniela Calderón Gámez
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, Av. Insurgentes Sur 3700, Letra C, Col. Insurgentes Cuicuilco, Del. Coyoacán, 04530, Mexico City, Mexico
| | - Carlos Paz Tres
- Laboratorio de Neurofisiología, Instituto Nacional de Neurología y Neurocirugía, Av. Insurgentes Sur 3877, Col. La Fama, Del. Tlalpan, 14269, Mexico City, Mexico
| | - Karla G Carvajal Aguilera
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, Av. Insurgentes Sur 3700, Letra C, Col. Insurgentes Cuicuilco, Del. Coyoacán, 04530, Mexico City, Mexico
| | - Bryan V Phillips Farfán
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, Av. Insurgentes Sur 3700, Letra C, Col. Insurgentes Cuicuilco, Del. Coyoacán, 04530, Mexico City, Mexico.
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Landgrave-Gómez J, Vargas-Romero F, Mercado-Gómez OF, Guevara-Guzmán R. The Emerging Role of Epigenetics on Dietary Treatment for Epilepsy. Curr Nutr Rep 2017. [DOI: 10.1007/s13668-017-0189-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Landgrave-Gómez J, Mercado-Gómez OF, Vázquez-García M, Rodríguez-Molina V, Córdova-Dávalos L, Arriaga-Ávila V, Miranda-Martínez A, Guevara-Guzmán R. Anticonvulsant Effect of Time-Restricted Feeding in a Pilocarpine-Induced Seizure Model: Metabolic and Epigenetic Implications. Front Cell Neurosci 2016; 10:7. [PMID: 26858603 PMCID: PMC4730902 DOI: 10.3389/fncel.2016.00007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 01/11/2016] [Indexed: 01/23/2023] Open
Abstract
A new generation of antiepileptic drugs has emerged; however, one-third of epilepsy patients do not properly respond to pharmacological treatments. The purpose of the present study was to investigate whether time-restricted feeding (TRF) has an anticonvulsant effect and whether this restrictive diet promotes changes in energy metabolism and epigenetic modifications in a pilocarpine-induced seizure model. To resolve our hypothesis, one group of rats had free access to food and water ad libitum (AL) and a second group underwent a TRF schedule. We used the lithium-pilocarpine model to induce status epilepticus (SE), and behavioral seizure monitoring was analyzed. Additionally, an electroencephalography (EEG) recording was performed to verify the effect of TRF on cortical electrical activity after a pilocarpine injection. For biochemical analysis, animals were sacrificed 24 h after SE and hippocampal homogenates were used to evaluate the proteins related to metabolism and chromatin structure. Our results showed that TRF had an anticonvulsant effect as measured by the prolonged latency of forelimb clonus seizure, a decrease in the seizure severity score and fewer animals reaching SE. Additionally, the power of the late phase EEG recordings in the AL group was significantly higher than the TRF group. Moreover, we found that TRF is capable of inducing alterations in signaling pathways that regulate energy metabolism, including an increase in the phosphorylation of AMP dependent kinase (AMPK) and a decrease in the phosphorylation of Akt kinase. Furthermore, we found that TRF was able to significantly increase the beta hydroxybutyrate (β-HB) concentration, an endogenous inhibitor of histone deacetylases (HDACs). Finally, we found a significant decrease in HDAC activity as well as an increase in acetylation on histone 3 (H3) in hippocampal homogenates from the TRF group. These findings suggest that alterations in energy metabolism and the increase in β-HB mediated by TRF may inhibit HDAC activity, thus increasing histone acetylation and producing changes in the chromatin structure, which likely facilitates the transcription of a subset of genes that confer anticonvulsant activity.
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Affiliation(s)
- Jorge Landgrave-Gómez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | | | - Mario Vázquez-García
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | - Víctor Rodríguez-Molina
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | - Laura Córdova-Dávalos
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | - Virginia Arriaga-Ávila
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | - Alfredo Miranda-Martínez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México México, DF, Mexico
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