9,962 results match your criteria caloric restriction


Caloric restriction enhances vascular tone of cerebral and mesenteric resistance arteries in aged rats.

Mech Ageing Dev 2021 Jun 12:111520. Epub 2021 Jun 12.

Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036, Rende, Italy; Department of Obstetrics, Gynecology and Reproductive Science, University of Vermont, Burlington, VT, 05405, USA. Electronic address:

Vascular changes of tone and biomechanical properties induced by ageing increase the risk for cardiovascular diseases. Caloric restriction (CR) has been shown to protect against cardiovascular diseases and improve endothelial dysfunction in cerebral resistance arteries. We hypothesise that CR will enhance vascular tone and structural properties of cerebral resistance arteries and exert comparable beneficial effects on the systemic vasculature of aged rat model. Read More

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Calorie restriction conferred improvement effect on long-term rehabilitation of ischemic stroke via gut microbiota.

Pharmacol Res 2021 Jun 11:105726. Epub 2021 Jun 11.

Key laboratory of whole-period monitoring and precise intervention of digestive cancer (SMHC), Minhang Hospital, Fudan University, 201199, Shanghai, China; Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, 201199 Shanghai, China. Electronic address:

Calorie restriction can modulate the gut microbiota and protect against many diseases including ischemic stroke. However, the role of calorie-restriction-induced microbiota alteration remained unknown in ischemic stroke rehabilitation. Here we conducted 30% reduction of caloric intake on mice for four weeks, to evaluate its role on ischemic stroke rehabilitation. Read More

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Capturing the anorexia nervosa phenotype: Conceptual and normative issues in ICD-11.

Authors:
Jennifer Radden

J Eval Clin Pract 2021 Jun 14. Epub 2021 Jun 14.

Philosophy Department, University of Massachusetts Boston, Boston, Massachusetts, USA.

Introduction: ICD-11's diagnostic definition possesses conceptual lacunae and normative implications calling for further attention.

Method: Assumptions underlying it and their ethical implications, are examined employing philosophical analysis; particularly, these are (1) changes to eliminate implications of voluntary agency to caloric restriction; (2) definitions of "dangerously low weight;" and (3) disorder boundaries as stated in qualifications and exclusions.

Results: (1) The extent to which AN behaviour can be acknowledged to be driven by forces out of, or limiting, voluntary control is unresolved; this is illustrated using the contested part played by excessive exercise, clarification of which requires understanding of AN motivation. Read More

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Identification of sur2 mutation affecting the lifespan of fission yeast.

FEMS Microbiol Lett 2021 Jun 10. Epub 2021 Jun 10.

Laboratory of Molecular Microbiology, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan.

Yeast is a suitable model system to analyze the mechanism of lifespan. In this study, to identify novel factors involved in chronological lifespan, we isolated a mutant with a long chronologically lifespan and found a missense mutation in the sur2+ gene, which encodes a homolog of S. cerevisiae sphingolipid C4-hydroxylase in fission yeast. Read More

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The promise of neuroprotection by dietary restriction in glaucoma.

Neural Regen Res 2022 Jan;17(1):45-47

Preclinical and Translational Pharmacology, Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy.

Glaucoma, a progressive age-related optic neuropathy characterized by the death of retinal ganglion cells, is the most common neurodegenerative cause of irreversible blindness worldwide. The therapeutic management of glaucoma, which is limited to lowering intraocular pressure, is still a challenge since visual loss progresses in a significant percentage of treated patients. Restricted dietary regimens have received considerable attention as adjuvant strategy for attenuating or delaying the progression of neurodegenerative diseases. Read More

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January 2022

Modulation of Intestinal Stem Cell Homeostasis by Nutrients: A Novel Therapeutic Option for Intestinal Diseases.

Nutr Res Rev 2021 Jun 8:1-28. Epub 2021 Jun 8.

Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, People's Republic of China.

Intestinal stem cells, which are capable of both self-renewal and differentiation to mature cell types, are responsible for maintaining intestinal epithelial homeostasis. Recent evidence indicates that these processes are mediated, in part, through nutritional status in response to diet. Diverse dietary patterns including caloric restriction, fasting, high-fat diets, ketogenic diets and high-carbohydrate diets as well as other nutrients control intestinal stem cell self-renewal and differentiation through nutrient-sensing pathways such as mTOR and AMPK. Read More

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Effects of short-term dietary restriction on plasma metabolites and the subcutaneous fat area according to metabolic status in obese individuals: a case-control study.

Diabetol Metab Syndr 2021 Jun 7;13(1):62. Epub 2021 Jun 7.

Department of Food and Nutrition, College of Life Science and Nano Technology, Hannam University, Daejeon, 34054, Korea.

Background: Research elucidating the metabolic mechanisms that differentiate subtypes of obesity has been increasing. We aimed to investigate the effects of a 12-week dietary intervention on the metabolomic profiles of obese subjects.

Methods: Subjects followed a 12-week dietary restriction protocol consisting of a 300 kcal/day reduction in their usual caloric intake. Read More

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stimulates autophagy-dependent longevity pathways in and human cells.

Aging (Albany NY) 2021 05 20;13(10):13474-13495. Epub 2021 May 20.

Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan.

The medicinal fungus is used as a dietary supplement and health tonic, but whether it affects longevity remains unclear. We show here that a water extract of mycelium extends lifespan of the nematode . The extract reduces the level of fibrillarin (FIB-1), a nucleolar protein that correlates inversely with longevity in various organisms. Read More

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Differential weight loss with intermittent fasting or daily calorie restriction in low- and high-fitness phenotypes.

Exp Physiol 2021 Jun 4. Epub 2021 Jun 4.

School of Biomedical Sciences, Kent State University, Kent, OH, 44242.

New Findings: What is the central question of this study? How does intrinsic aerobic capacity impact weight loss with 50% daily calorie restriction and alternate day fasting? What is the main finding and its importance? Intermittent fasting is effective for weight loss in low-fitness rats, which highlights the importance of how intermittent fasting interacts with aerobic fitness.

Abstract: Recent interest has focused on the benefits of time-restricted feeding strategies, including intermittent fasting, for weight loss. It is unsettled, however, if intermittent fasting is more effective than daily caloric restriction at stimulating weight loss, and how each is subject to individual differences. Read More

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Caloric restriction ameliorates high-fat diet induced cognitive deficits through attenuating neuroinflammation the TREM2-PI3K/AKT signaling pathway.

Food Funct 2021 Jun 2. Epub 2021 Jun 2.

Academy of Nutrition and Health, Wuhan University of Science and Technology, Wuhan 430065, China. and Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, China and New Medicine Innovation and Development Institute, Department of Pharmacy, College of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China.

Prolonged high-fat diet (HFD) feeding impairs cognitive function in rodents. However, the mechanism of caloric restriction (CR) for remedying HFD-induced cognitive dysfunction remains elusive. In the present study, we investigated the effect of CR on HFD-induced cognitive dysfunction and its possible mechanism. Read More

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Modeling transcriptomic age using knowledge-primed artificial neural networks.

NPJ Aging Mech Dis 2021 Jun 1;7(1):15. Epub 2021 Jun 1.

Institute for Bioinformatics, University Medicine Greifswald, Greifswald, Germany.

The development of 'age clocks', machine learning models predicting age from biological data, has been a major milestone in the search for reliable markers of biological age and has since become an invaluable tool in aging research. However, beyond their unquestionable utility, current clocks offer little insight into the molecular biological processes driving aging, and their inner workings often remain non-transparent. Here we propose a new type of age clock, one that couples predictivity with interpretability of the underlying biology, achieved through the incorporation of prior knowledge into the model design. Read More

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NADH/NAD Redox Imbalance and Diabetic Kidney Disease.

Authors:
Liang-Jun Yan

Biomolecules 2021 May 14;11(5). Epub 2021 May 14.

Department of Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.

Diabetic kidney disease (DKD) is a common and severe complication of diabetes mellitus. If left untreated, DKD can advance to end stage renal disease that requires either dialysis or kidney replacement. While numerous mechanisms underlie the pathogenesis of DKD, oxidative stress driven by NADH/NAD redox imbalance and mitochondrial dysfunction have been thought to be the major pathophysiological mechanism of DKD. Read More

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Iron Beats Electricity: Resistance Training but Not Whole-Body Electromyostimulation Improves Cardiometabolic Health in Obese Metabolic Syndrome Patients during Caloric Restriction-A Randomized-Controlled Study.

Nutrients 2021 May 13;13(5). Epub 2021 May 13.

Hector-Center for Nutrition, Exercise and Sports, Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany.

Caloric restriction (CR) and exercise are cornerstones in the treatment of obesity and cardiometabolic disorders. Recently, whole body electromyostimulation (WB-EMS) has emerged as a more time-efficient alternative to traditional resistance training (RT). However, the effects of WB-EMS compared to RT on cardiometabolic health in obese metabolic syndrome (MetS) patients performed during CR are still unclear. Read More

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Modulation of Endocannabinoids by Caloric Restriction Is Conserved in Mice but Is Not Required for Protection from Acute Kidney Injury.

Int J Mol Sci 2021 May 22;22(11). Epub 2021 May 22.

Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 37, 50937 Cologne, Germany.

Acute kidney injury (AKI) is a frequent and critical complication in the clinical setting. In rodents, AKI can be effectively prevented through caloric restriction (CR), which has also been shown to increase lifespan in many species. In (), longevity studies revealed that a marked CR-induced reduction of endocannabinoids may be a key mechanism. Read More

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Fasting: How to Guide.

Nutrients 2021 May 7;13(5). Epub 2021 May 7.

Section of Clinical Nutrition and Nutrigenomic, Department of Biomedicine and Prevention, University of Tor Vergata, Via Montpellier 1, 00133 Rome, Italy.

Fasting potentials are the most interesting topics in the Nutritional Era. Fasting consists of the catabolism of lipids, proteins, and carbohydrates to maintain blood glucose levels in a normal range. The action mechanisms of fasting were firstly understood in minor organisms and later in humans. Read More

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Skeletal Muscle Gene Expression Profile in Response to Caloric Restriction and Aging: A Role for SirT1.

Genes (Basel) 2021 May 5;12(5). Epub 2021 May 5.

Laboratory of Muscle Biology and Sarcopenia, Division of Exercise Physiology, Department of Human Performance, West Virginia University School of Medicine, Morgantown, WV 26506, USA.

SirT1 plays a crucial role in the regulation of some of the caloric restriction (CR) responsive biological pathways. Aging suppresses SirT1 gene expression in skeletal muscle, suggesting that aging may affect the role of CR in muscle. To determine the role of SirT1 in the regulation of CR regulated pathways in skeletal muscle, we performed high-throughput RNA sequencing using total RNA isolated from the skeletal muscles of young and aged wild-type (WT), SirT1 knockout (SirT1-KO), and SirT1 overexpression (SirT1-OE) mice fed to 20 wk ad libitum (AL) or 40% CR diet. Read More

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Effects of a 3-Week In-Hospital Multidisciplinary Body Weight Reduction Program in Obese Females: Is Measured Resting Energy Expenditure Essential for Tailoring Adequately the Amount of Energy Intake?

Front Nutr 2021 12;8:678788. Epub 2021 May 12.

Istituto Auxologico Italiano, Experimental Laboratory for Auxo-Endocrinological Research, Verbania and Milan, Italy.

In the obese population, the prescription of a proper diet plan is essential to ensure an appropriate and gradual weight loss, reduce the risk of weight cycling and favor an overall improvement of health conditions. Energy needs are commonly estimated using predictive equations, even if their accuracy is still debated, especially in severely obese subjects. In the present study, 850 severely obese females admitted to our hospital for a multidisciplinary body weight reduction program (BWRP) were divided into three subgroups, "hypo-," "normo-," and "hyper-metabolic," based on the comparison between estimated resting energy expenditure (eREE, using the Mifflin equation) and measured REE (mREE, using indirect calorimetry). Read More

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Low Protein Diets and Energy Balance: Mechanisms of Action on Energy Intake and Expenditure.

Front Nutr 2021 13;8:655833. Epub 2021 May 13.

School of Veterinary Medicine, Texas Tech University, Amarillo, TX, United States.

Low protein diets are associated with increased lifespan and improved cardiometabolic health primarily in rodents, and likely improve human health. There is strong evidence that moderate to severe reduction in dietary protein content markedly influences caloric intake and energy expenditure, which is often followed by a decrease in body weight and adiposity in animal models. While the neuroendocrine signals that trigger hyperphagic responses to protein restriction are better understood, there is accumulating evidence that increased sympathetic flux to brown adipose tissue, fibroblast growth factor-21 and serotonergic signaling are important for the thermogenic effects of low protein diets. Read More

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Obesity and Heart Failure with Preserved Ejection Fraction.

Heart Fail Clin 2021 Jul;17(3):345-356

Department of Cardiology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA. Electronic address:

Obese heart failure with preserved ejection fraction (HFpEF) is a distinct HFpEF phenotype. Sodium retention, high circulating neurohormone levels, alterations in energy substrate metabolism, group 3 pulmonary hypertension, pericardial restraint, and systemic inflammation are central pathophysiologic mechanisms. Confirming the diagnosis may be challenging and high suspicion is required. Read More

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Disrupting the ghrelin-growth hormone axis limits ghrelin's orexigenic but not glucoregulatory actions.

Mol Metab 2021 May 21;53:101258. Epub 2021 May 21.

Center for Hypothalamic Research, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA; Division of Endocrinology, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA; Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX, USA. Electronic address:

Objective: Acyl-ghrelin regulates eating, body weight, blood glucose, and GH secretion upon binding to its receptor GHSR (growth hormone secretagogue receptor; ghrelin receptor). GHSR is distributed in several brain regions and some peripheral cell-types including pituitary somatotrophs. The objective of the current study was to determine the functional significance of acyl-ghrelin's action on GHSR-expressing somatotrophs in mediating GH secretion and several of acyl-ghrelin's metabolic actions. Read More

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Caloric restriction increases levels of taurine in the intestine and stimulates taurine uptake by conjugation to glutathione.

J Nutr Biochem 2021 May 20;96:108781. Epub 2021 May 20.

Department of Nutritional Sciences, University of Vienna, Vienna, Austria. Electronic address:

Our previous study indicated increased levels of taurine-conjugated bile acids (BA) in the intestine content of mice submitted to caloric restriction (CR). In the current project, we found increased levels of free taurine and taurine conjugates, including glutathione (GSH)-taurine, in CR compared to ad libitum fed animals in the mucosa along the intestine but not in the liver. The levels of free GSH were decreased in the intestine of CR compared to ad libitum fed mice. Read More

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Rapid BMI Increases and Persistent Obesity in Small-for-Gestational-Age Infants.

Front Pediatr 2021 4;9:625853. Epub 2021 May 4.

Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.

In order to compensate for the early intrauterine growth restriction, small-for-gestational age (SGA) infants have "catch-up growth" after birth. Increased caloric intake has been suggested for SGA infants conventionally. It is important to determine if the early growth rate of body mass index (BMI) is associated with risk of persistent obesity later in life. Read More

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Importance of circadian timing for aging and longevity.

Nat Commun 2021 05 17;12(1):2862. Epub 2021 May 17.

Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA.

Dietary restriction (DR) decreases body weight, improves health, and extends lifespan. DR can be achieved by controlling how much and/or when food is provided, as well as by adjusting nutritional composition. Because these factors are often combined during DR, it is unclear which are necessary for beneficial effects. Read More

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The Protective Mechanism of SIRT1 in the Regulation of Mitochondrial Biogenesis and Mitochondrial Autophagy in Alzheimer's Disease.

Authors:
Fan Ye Anshi Wu

J Alzheimers Dis 2021 May 11. Epub 2021 May 11.

Department of Anesthesiology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.

Silent information-regulated transcription factor 1 (SIRT1) is the most prominent and widely studied member of the sirtuins (a family of mammalian class III histone deacetylases). It is a nuclear protein, and the deacetylation of the peroxisome proliferator-activated receptor coactivator-1 has been extensively implicated in metabolic control and mitochondrial biogenesis and is the basis for studies into its involvement in caloric restriction and its effects on lifespan. The present study discusses the potentially protective mechanism of SIRT1 in the regulation of the mitochondrial biogenesis and autophagy involved in the modulation of Alzheimer's disease, which may be correlated with the role of SIRT1 in affecting neuronal morphology, learning, and memory during development; regulating metabolism; counteracting stress responses; and maintaining genomic stability. Read More

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Effect of resistance training with and without caloric restriction on visceral fat: A systemic review and meta-analysis.

Obes Rev 2021 May 16:e13275. Epub 2021 May 16.

Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.

We performed a systematic review and meta-analysis to investigate the effect of resistance training (RT) with and without caloric restriction (CR) on visceral fat (VF). PubMed and Scopus were searched to identify original articles published through December 2020. Standardized mean differences and 95% confidence intervals (95% CIs) were determined, and separate analyses were conducted for RT versus control, and RT plus CR versus CR only. Read More

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A small-molecule Psora-4 acts as a caloric restriction mimetic to promote longevity in C. elegans.

Geroscience 2021 May 14. Epub 2021 May 14.

Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117608, Singapore.

In populations around the world, the fraction of humans aged 65 and above is increasing at an unprecedented rate. Aging is the main risk factor for the most important degenerative diseases and this demographic shift poses significant social, economic, and medical challenges. Pharmacological interventions directly targeting mechanisms of aging are an emerging strategy to delay or prevent age-dependent diseases. Read More

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REVIEW: Practical strategies to maintain anabolism by intravenous nutritional management in children with inborn metabolic diseases.

Mol Genet Metab 2021 May 7. Epub 2021 May 7.

Section of Clinical Genetics and Metabolism, Department of Pediatrics, University of Colorado, Aurora, CO, USA. Electronic address:

One of the most vital elements of management for patients with inborn errors of intermediary metabolism is the promotion of anabolism, the state in which the body builds new components, and avoidance of catabolism, the state in which the body breaks down its own stores for energy. Anabolism is maintained through the provision of a sufficient supply of substrates for energy, as well as critical building blocks of essential amino acids, essential fatty acids, and vitamins for synthetic function and growth. Patients with metabolic diseases are at risk for decompensation during prolonged fasting, which often occurs during illnesses in which enteral intake is compromised. Read More

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Cellular senescence and the senescence-associated secretory phenotype: Potential therapeutic targets for renal fibrosis.

Exp Gerontol 2021 Aug 11;151:111403. Epub 2021 May 11.

School of Medicine, Nankai University, Tianjin 300071, China; Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, China. Electronic address:

Renal fibrosis plays a crucial role in the progression of chronic kidney disease and end-stage renal disease. However, because the aetiology of this pathological process is complex and remains unclear, there is still no effective treatment. Cellular senescence and the senescence-associated secretory phenotype (SASP) have been reported to lead to renal fibrosis. Read More

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Deletion of in Preosteoblasts Reveals a Role for the Mammalian Target of Rapamycin Complex 1 (mTORC1) Complex in Dietary-Induced Changes to Bone Mass and Glucose Homeostasis in Female Mice.

JBMR Plus 2021 May 24;5(5):e10486. Epub 2021 Mar 24.

Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.

The mammalian target of rapamycin complex 1 (mTORC1) complex is the major nutrient sensor in mammalian cells that responds to amino acids, energy levels, growth factors, and hormones, such as insulin, to control anabolic and catabolic processes. We have recently shown that suppression of the mTORC1 complex in bone-forming osteoblasts (OBs) improved glucose handling in male mice fed a normal or obesogenic diet. Mechanistically, this occurs, at least in part, by increasing OB insulin sensitivity leading to upregulation of glucose uptake and glycolysis. Read More

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Effect of intermittent and continuous caloric restriction on Sirtuin1 concentration depends on sex and body mass index.

Nutr Metab Cardiovasc Dis 2021 Jun 19;31(6):1871-1878. Epub 2021 Mar 19.

Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevål, Oslo, Norway; Faculty of Medicine, University of Oslo, Norway.

Background & Aims: The favorable effect of caloric restriction (CR) on health span is well known and partly mediated by the sirtuin system. Sirtuin1, a regulator of energy homeostasis in response to nutrient availability, is activated by CR. We therefore investigated effects of two different CR regimens on Sirtuin1 concentrations. Read More

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