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https://www.readbyqxmd.com/read/28228829/hepatic-iron-storage-is-related-to-body-adiposity-and-hepatic-inflammation
#1
Chan Yoon Park, Jayong Chung, Kyung-Ok Koo, Min Soo Kim, Sung Nim Han
BACKGROUND: Obesity has been reported to be associated with iron deficiency. However, few studies have investigated iron status in low adiposity. To investigate whether body adiposity was associated with altered hepatic iron status, we compared liver iron levels and markers involved in inflammation and iron absorption in obese, control, and mildly calorie restricted mice. METHODS: Seven week old C57BL/6 mice were fed control (10% kcal fat, Control) or high fat (60% kcal fat, HFD) diets, or reduced amount of control diet to achieve 15% calorie restriction (CR) for 16 weeks...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28228420/body-composition-changes-in-the-comprehensive-assessment-of-long-term-effects-of-reducing-intake-of-energy-calerie-2-study-a-2-y-randomized-controlled-trial-of-calorie-restriction-in-nonobese-humans
#2
Sai Krupa Das, Susan B Roberts, Manjushri V Bhapkar, Dennis T Villareal, Luigi Fontana, Corby K Martin, Susan B Racette, Paul J Fuss, William E Kraus, William W Wong, Edward Saltzman, Carl F Pieper, Roger A Fielding, Ann V Schwartz, Eric Ravussin, Leanne M Redman
Background: Calorie restriction (CR) retards aging and increases longevity in many animal models. However, it is unclear whether CR can be implemented in humans without adverse effects on body composition.Objective: We evaluated the effect of a 2-y CR regimen on body composition including the influence of sex and body mass index (BMI; in kg/m(2)) among participants enrolled in CALERIE-2 (Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy), a multicenter, randomized controlled trial.Design: Participants were 218 nonobese (BMI: 21...
February 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28214525/-is-there-an-optimal-diet-for-weight-management-and-metabolic-health
#3
George Thom, Mike Lean
Individuals can lose body weight and improve health status on a wide range of energy (calorie) restricted dietary interventions. In this paper, we have reviewed the effectiveness of the most commonly utilized diets, including low-fat, low-carbohydrate and Mediterranean approaches in addition to commercial slimming programmes, meal replacements and newly-popularized intermittent fasting diets. We also consider the role of artificial sweeteners in weight management. Low-fat diets tend to improve LDL-cholesterol most, whilst lower-carbohydrate diets may preferentially improve triglycerides and HDL-cholesterol, however differences between diets are marginal...
February 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28213011/calorie-restriction-promotes-cardiolipin-biosynthesis-and-distribution-between-mitochondrial-membranes
#4
Luis Alberto Luévano-Martínez, Maria Fernanda Forni, Julia Peloggia, Ii-Sei Watanabe, Alicia J Kowaltowski
Calorie restriction (CR) has been amply demonstrated to modify mitochondrial function. However, little is known regarding the effects of this dietary regimen on mitochondrial membranes. We isolated phospholipids from rat liver mitochondria from animals on CR or ad libitum diets and found that mitochondria from ad libitum animals present an increased content of lipoperoxides and the content of cardiolipin. Cardiolipin is the main anionic phospholipid present in mitochondrial membranes, and plays a key role in mitochondrial function, signaling and stress response...
February 14, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28202779/fasting-mimicking-diet-and-markers-risk-factors-for-aging-diabetes-cancer-and-cardiovascular-disease
#5
Min Wei, Sebastian Brandhorst, Mahshid Shelehchi, Hamed Mirzaei, Chia Wei Cheng, Julia Budniak, Susan Groshen, Wendy J Mack, Esra Guen, Stefano Di Biase, Pinchas Cohen, Todd E Morgan, Tanya Dorff, Kurt Hong, Andreas Michalsen, Alessandro Laviano, Valter D Longo
Calorie restriction or changes in dietary composition can enhance healthy aging, but the inability of most subjects to adhere to chronic and extreme diets, as well as potentially adverse effects, limits their application. We randomized 100 generally healthy participants from the United States into two study arms and tested the effects of a fasting-mimicking diet (FMD)-low in calories, sugars, and protein but high in unsaturated fats-on markers/risk factors associated with aging and age-related diseases. We compared subjects who followed 3 months of an unrestricted diet to subjects who consumed the FMD for 5 consecutive days per month for 3 months...
February 15, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28198412/a-screening-strategy-for-the-discovery-of-drugs-that-reduce-c-ebp%C3%AE-lip-translation-with-potential-calorie-restriction-mimetic-properties
#6
Mohamad A Zaini, Christine Müller, Tobias Ackermann, Jeanette Reinshagen, Gertrud Kortman, Ole Pless, Cornelis F Calkhoven
An important part of the beneficial effects of calorie restriction (CR) on healthspan and lifespan is mediated through regulation of protein synthesis that is under control of the mechanistic target of rapamycin complex 1 (mTORC1). As one of its activities, mTORC1 stimulates translation into the metabolic transcription factor CCAAT/Enhancer Binding Protein β (C/EBPβ) isoform Liver-specific Inhibitory Protein (LIP). Regulation of LIP expression strictly depends on a translation re-initiation event that requires a conserved cis-regulatory upstream open reading frame (uORF) in the C/EBPβ-mRNA...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28196143/iron-restricted-pair-feeding-affects-renal-damage-in-rats-with-chronic-kidney-disease
#7
Yoshiro Naito, Aya Senchi, Hisashi Sawada, Makiko Oboshi, Tetsuo Horimatsu, Keisuke Okuno, Seiki Yasumura, Masaharu Ishihara, Tohru Masuyama
BACKGROUND: We have previously shown that dietary iron restriction prevents the development of renal damage in a rat model of chronic kidney disease (CKD). However, iron deficiency is associated with appetite loss. In addition, calorie restriction is reported to prevent the development of end-stage renal pathology in CKD rats. Thus, the beneficial effect of iron restriction on renal damage may depend on calorie restriction. Here, we investigate the effect of pair-feeding iron restriction on renal damage in a rat model of CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28193912/the-effects-of-graded-levels-of-calorie-restriction-viii-impact-of-short-term-calorie-and-protein-restriction-on-basal-metabolic-rate-in-the-c57bl-6-mouse
#8
Sharon E Mitchell, ZhanHui Tang, Celine Kerbois, Camille Delville, Davina Derous, Cara L Green, Yingchun Wang, Jackie J D Han, Luonan Chen, Alex Douglas, David Lusseau, Daniel E L Promislow, John R Speakman
Under calorie restriction (CR) animals need to lower energy demands. Whether this involves a reduction in cellular metabolism is an issue of contention. We exposed C57BL/6 mice to graded CR for 3 months, measured BMR and dissected out 20 body compartments. From a separate age-matched group (n=57), we built 7 predictive models for BMR. Unadjusted BMR declined with severity of restriction. Comparison of measured and predicted BMR from the simple models suggested suppression occurred. The extent of 'suppression' was greater with increased CR severity...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28163748/weight-loss-technology-for-people-with-treated-type-2-diabetes-a-randomized-controlled-trial
#9
Kuat Oshakbayev, Bibazhar Dukenbayeva, Gulnar Togizbayeva, Aigul Durmanova, Meruyert Gazaliyeva, Abdul Sabir, Aliya Issa, Alisher Idrisov
BACKGROUND: The prevalence of type 2 diabetes is increasing in worldwide despite the development of new treatment methods. Aim of the study was to evaluate a weight loss method on body composition, glycemic, lipid and hormone profiles, blood pressure and reactive oxygen species in people with treated type 2 diabetes. METHODS: A 24-week open, prospective, randomized, controlled clinical trial including 272 adult patients with treated type 2 diabetes was performed...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28158621/calorie-restriction-induced-weight-loss-and-exercise-have-differential-effects-on-skeletal-muscle-mitochondria-despite-similar-effects-on-insulin-sensitivity
#10
Elizaveta V Menshikova, Vladimir B Ritov, John J Dube, Francesca Amati, Maja Stefanovic-Racic, Frederico G S Toledo, Paul M Coen, Bret H Goodpaster
No abstract text is available yet for this article.
February 2, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28158260/effects-of-calorie-restriction-on-the-lifespan-and-healthspan-of-polg-mitochondrial-mutator-mice
#11
Shinichi Someya, Gregory C Kujoth, Mi-Jung Kim, Timothy A Hacker, Marc Vermulst, Richard Weindruch, Tomas A Prolla
Mitochondrial DNA (mtDNA) mutations are thought to have a causative role in age-related pathologies. We have shown previously that mitochondrial mutator mice (PolgD257A/D257A), harboring a proofreading-deficient version of the mtDNA polymerase gamma (POLG), accumulate mtDNA mutations in multiple tissues and display several features of accelerated aging. Calorie restriction (CR) is known to delay the onset of age-related diseases and to extend the lifespan of a variety of species, including rodents. In the current study we investigated the effects of CR on the lifespan and healthspan of mitochondrial mutator mice...
2017: PloS One
https://www.readbyqxmd.com/read/28139067/the-effects-of-graded-levels-of-calorie-restriction-ix-global-metabolomic-screen-reveals-modulation-of-carnitines-sphingolipids-and-bile-acids-in-the-liver-of-c57bl-6-mice
#12
Cara L Green, Sharon E Mitchell, Davina Derous, Yingchun Wang, Luonan Chen, Jing-Dong J Han, Daniel E L Promislow, David Lusseau, Alex Douglas, John R Speakman
Calorie restriction (CR) remains the most robust intervention to extend lifespan and improve health span. Using a global mass spectrometry-based metabolomic approach, we identified 193 metabolites that were significantly differentially expressed (SDE) in the livers of C57BL/6 mice, fed graded levels of CR (10, 20, 30 and 40% CR) compared to mice fed ad libitum for 12 h a day. The differential expression of metabolites also varied with the different feeding groups. Pathway analysis revealed that graded CR had an impact on carnitine synthesis and the carnitine shuttle pathway, sphingosine-1-phosphate (S1P) signalling and methionine metabolism...
January 31, 2017: Aging Cell
https://www.readbyqxmd.com/read/28132874/glycation-inhibitors-extend-yeast-chronological-lifespan-by-reducing-advanced-glycation-end-products-and-by-back-regulation-of-proteins-involved-in-mitochondrial-respiration
#13
Rubina S Kazi, Reema M Banarjee, Arati B Deshmukh, Gouri V Patil, Mashanipalya G Jagadeeshaprasad, Mahesh J Kulkarni
: Advanced Glycation End products (AGEs) are implicated in aging process. Thus, reducing AGEs by using glycation inhibitors may help in attenuating the aging process. In this study using Saccharomyces cerevisiae yeast system, we show that Aminoguanidine (AMG), a well-known glycation inhibitor, decreases the AGE modification of proteins in non-calorie restriction (NR) (2% glucose) and extends chronological lifespan (CLS) similar to that of calorie restriction (CR) condition (0.5% glucose)...
March 6, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28129911/dietary-modeling-of-foods-for-advanced-ckd-based-on-general-healthy-eating-guidelines-what-should-be-on-the-plate
#14
REVIEW
Maria Chan, John Kelly, Linda Tapsell
Chronic kidney disease (CKD) is a major public health problem with significant clinical, societal, and psychosocial burdens. Nutrition therapy has been an integral part of the medical management of patients with CKD for more than a century, with the main goals of preserving kidney function and preventing complications. Nutrition abnormalities may emerge well before dialysis therapy is initiated and are associated with poor outcomes. It is therefore important to revisit nutrition management in the advanced stages of CKD to gain a broader insight into its role and effect on patient outcomes...
January 24, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28125271/is-apelin-gene-expression-and-concentration-affected-by-dietary-intakes-a-systematic-review
#15
Emad Yuzbashian, Maryam Zarkesh, Golaleh Asghari, Mehdi Hedayati, Mohammad Safarian, Parvin Mirmiran, Ali Reza Khalaj
BACKGROUND: Overproduction of apelin in obesity could be one of the last protective defenses before type 2 diabetes develops. OBJECTIVE: To summarize the existing evidence on the association between dietary intake and apelin gene expression and concentration. METHODS: We systematically searched MEDLINE, EMBASE, and google scholar and hand-searched bibliographies, including peer-reviewed articles with English abstracts, without restriction in publication date, updated until 21 February 2016 that reported the association between dietary intake and apelin gene expression or concentration...
January 26, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28123938/intestinal-invalidation-of-the-glucose-transporter-glut2-delays-tissue-distribution-of-glucose-and-reveals-an-unexpected-role-in-gut-homeostasis
#16
Charlotte C Schmitt, Thomas Aranias, Thomas Viel, Danielle Chateau, Maude Le Gall, Anne-Judith Waligora-Dupriet, Chloé Melchior, Ophélie Rouxel, Nathalie Kapel, Guillaume Gourcerol, Bertrand Tavitian, Agnès Lehuen, Edith Brot-Laroche, Armelle Leturque, Patricia Serradas, Alexandra Grosfeld
OBJECTIVE: Intestinal glucose absorption is orchestrated by specialized glucose transporters such as SGLT1 and GLUT2. However, the role of GLUT2 in the regulation of glucose absorption remains to be fully elucidated. METHODS: We wanted to evaluate the role of GLUT2 on glucose absorption and glucose homeostasis after intestinal-specific deletion of GLUT2 in mice (GLUT2(ΔIEC) mice). RESULTS: As anticipated, intestinal GLUT2 deletion provoked glucose malabsorption as visualized by the delay in the distribution of oral sugar in tissues...
January 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28112773/combination-of-recreational-soccer-and-caloric-restricted-diet-reduces-markers-of-protein-catabolism-and-cardiovascular-risk-in-patients-with-type-2-diabetes
#17
M Vieira de Sousa, R Fukui, P Krustrup, S Dagogo-Jack, M E Rossi da Silva
BACKGROUND: Moderate calorie-restricted diets and exercise training prevent loss of lean mass and cardiovascular risk. Because adherence to routine exercise recommendation is generally poor, we utilized recreational soccer training as a novel therapeutic exercise intervention in type 2 diabetes (T2D) patients. OBJECTIVE: We compared the effects of acute and chronic soccer training plus calorie-restricted diet on protein catabolism and cardiovascular risk markers in T2D...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28109165/melatonin-and-sirtuins-a-not-so-unexpected-relationship
#18
REVIEW
Juan C Mayo, Rosa M Sainz, Pedro González Menéndez, Vanesa Cepas, Dun-Xian Tan, Russel J Reiter
Epigenetic modifications, including methylation or acetylation as well as post-transcriptional modifications, are mechanisms used by eukaryotic cells to increase the genome diversity in terms of differential gene expression and protein diversity. Among these modifying enzymes, sirtuins, a class III histone deacetylase (HDAC) enzymes, are of particular importance. Sirtuins regulate the cell cycle, DNA repair, cell survival, and apoptosis, thus having important roles in normal and cancer cells. Sirtuins can also regulate metabolic pathways by changing preference for glycolysis under aerobic conditions as well as glutaminolysis...
January 21, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28107353/weight-perturbation-alters-leptin-signal-transduction-in-a-region-specific-manner-throughout-the-brain
#19
Michael V Morabito, Yann Ravussin, Bridget R Mueller, Alicja A Skowronski, Kazuhisa Watanabe, Kylie S Foo, Samuel X Lee, Anders Lehmann, Stephan Hjorth, Lori M Zeltser, Charles A LeDuc, Rudolph L Leibel
Diet-induced obesity (DIO) resulting from consumption of a high fat diet (HFD) attenuates normal neuronal responses to leptin and may contribute to the metabolic defense of an acquired higher body weight in humans; the molecular bases for the persistence of this defense are unknown. We measured the responses of 23 brain regions to exogenous leptin in 4 different groups of weight- and/or diet-perturbed mice. Responses to leptin were assessed by quantifying pSTAT3 levels in brain nuclei 30 minutes following 3 mg/kg intraperitoneal leptin...
2017: PloS One
https://www.readbyqxmd.com/read/28106245/a-randomized-controlled-trial-of-mediterranean-diet-and-metformin-to-prevent-age-related-diseases-in-people-with-metabolic-syndrome
#20
Patrizia Pasanisi, Giuliana Gargano, Maria Gaetana Di Mauro, Mauro Cortellini, Alice Casagrande, Anna Villarini, Eleonora Bruno, Eliana Roveda, Gabriella Saibene, Elisabetta Venturelli, Franco Berrino
PURPOSE: Age-related non-communicable chronic diseases (ArCDs) are the leading cause of mortality. The major metabolic risk factor for their development is the metabolic syndrome (MetS), defined as a clustering of risk factors of metabolic origin such as abdominal obesity, high blood pressure, dyslipidemia and high fasting glycemia. There is increasing observational and experimental evidence that improving diet and the use of metformin (a calorie-restriction mimetic drug) may modify the risk of developing MetS and ArCD...
January 20, 2017: Tumori
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