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https://www.readbyqxmd.com/read/28944597/caloric-restriction-induced-decreases-in-dopamine-receptor-availability-are-associated-with-leptin-concentration
#1
Julia P Dunn, Naji N Abumrad, Robert M Kessler, Bruce W Patterson, Rui Li, Pamela Marks-Shulman, Robyn A Tamboli
OBJECTIVE: It has been previously reported that early after Roux-en-Y-gastric bypass, dopamine (DA) type 2 and 3 receptor (D2/3R) binding potential (BPND ) was decreased from preoperative levels. The current study aimed to determine whether calorie restriction without weight loss modifies D2/3R BPND and whether such changes are explained by neuroendocrine regulation. METHODS: Fifteen females with obesity (BMI = 39 ± 6 kg/m(2) ) were studied before and after ∼10 days of a very-low-calorie-diet (VLCD)...
September 25, 2017: Obesity
https://www.readbyqxmd.com/read/28931850/effect-of-caloric-restriction-on-gut-permeability-inflammation-markers-and-fecal-microbiota-in-obese-women
#2
Beate Ott, Thomas Skurk, Ljiljana Hastreiter, Ilias Lagkouvardos, Sandra Fischer, Janine Büttner, Teresa Kellerer, Thomas Clavel, Michael Rychlik, Dirk Haller, Hans Hauner
Recent findings suggest an association between obesity, loss of gut barrier function and changes in microbiota profiles. Our primary objective was to examine the effect of caloric restriction and subsequent weight reduction on gut permeability in obese women. The impact on inflammatory markers and fecal microbiota was also investigated. The 4-week very-low calorie diet (VLCD, 800 kcal/day) induced a mean weight loss of 6.9 ± 1.9 kg accompanied by a reduction in HOMA-IR (Homeostasis model assessment-insulin resistance), fasting plasma glucose and insulin, plasma leptin, and leptin gene expression in subcutaneous adipose tissue...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790922/exercise-preserves-lean-mass-and-performance-during-severe-energy-deficit-the-role-of-exercise-volume-and-dietary-protein-content
#3
Jose A L Calbet, Jesús G Ponce-González, Jaime de La Calle-Herrero, Ismael Perez-Suarez, Marcos Martin-Rincon, Alfredo Santana, David Morales-Alamo, Hans-Christer Holmberg
The loss of fat-free mass (FFM) caused by very-low-calorie diets (VLCD) can be attenuated by exercise. The aim of this study was to determine the role played by exercise and dietary protein content in preserving the lean mass and performance of exercised and non-exercised muscles, during a short period of extreme energy deficit (~23 MJ deficit/day). Fifteen overweight men underwent three consecutive experimental phases: baseline assessment (PRE), followed by 4 days of caloric restriction and exercise (CRE) and then 3 days on a control diet combined with reduced exercise (CD)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28730835/the-effect-of-very-low-calorie-diet-on-mitochondrial-dysfunction-in-subcutaneous-adipose-tissue-and-peripheral-monocytes-of-obese-subjects-with-type-2-diabetes-mellitus
#4
M Urbanová, M Mráz, V Ďurovcová, P Trachta, J Kloučková, P Kaválková, D Haluzíková, Z Lacinová, H Hansíková, L Wenchich, M Kršek, M Haluzík
Mitochondrial dysfunction is a potentially important player in the development of insulin resistance and type 2 diabetes mellitus (T2DM). We investigated the changes of mRNA expression of genes encoding main enzymatic complexes of mitochondrial respiratory chain in subcutaneous adipose tissue (SCAT) and peripheral monocytes (PM) of 11 subjects with simple obesity (OB), 16 obese patients with T2DM and 17 healthy lean subjects (C) before and after very low-calorie diet (VLCD) using quantitative real time PCR...
July 18, 2017: Physiological Research
https://www.readbyqxmd.com/read/28710554/morphofunctional-changes-after-sleeve-gastrectomy-and-very-low-calorie-diet-in-an-animal-model-of-non-alcoholic-fatty-liver-disease
#5
Eider Talavera-Urquijo, Sarai Rodríguez-Navarro, Marc Beisani, Maria Teresa Salcedo-Allende, Aisha Chakkur, Marc Arús-Avilés, Manel Cremades, Salvador Augustin, María Martell, José M Balibrea
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease and is found in 70% of obese people. The evidence available to date suggests that bariatric surgery could be an effective treatment by reducing weight and also by improving metabolic complications in the long term. This work aimed to compare, in a diet-induced NAFLD animal model, the effect of both sleeve gastrectomy (SG) and very-low calorie diet (VLCD). METHODS: Thirty-five Wistar rats were divided into control rats (n = 7) and obese rats fed a high-fat diet (HFD)...
July 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28406702/an-alternatively-activated-macrophage-marker-cd163-in-severely-obese-patients-the-influence-of-very-low-calorie-diet-and-bariatric-surgery
#6
A Cinkajzlová, Z Lacinová, J Kloučková, P Kaválková, P Trachta, M Kosák, J Krátký, M Kasalický, K DoleŽalová, M Mráz, M Haluzík
CD163 is a marker of macrophages with anti-inflammatory properties and its soluble form (sCD163) is considered a prognostic predictor of several diseases including type 2 diabetes mellitus (T2DM). We explored sCD163 levels at baseline and after very low-calorie diet (VLCD) or bariatric surgery in 32 patients with obesity (20 undergoing VLCD and 12 bariatric surgery), 32 obese patients with T2DM (22 undergoing VLCD and 10 bariatric surgery), and 19 control subjects. We also assessed the changes of CD163 positive cells of monocyte-macrophage lineage in peripheral blood and subcutaneous adipose tissue (SAT) in subset of patients...
April 12, 2017: Physiological Research
https://www.readbyqxmd.com/read/28329121/very-low-calorie-diets-for-weight-loss-in-obese-older-adults-a-randomized-trial
#7
Cilla J Haywood, Luke A Prendergast, Katrina Purcell, Lauren Le Fevre, Wen Kwang Lim, Mary Galea, Joseph Proietto
Background: Obesity contributes to disability in older adults, and this is offset by weight loss and exercise. Very Low Calorie Diets (VLCDs) achieve rapid weight loss; however, these have not been rigorously evaluated in older people. Methods: A randomized trial was conducted from August 2012 through December 2015. The intervention was 12 weeks of thrice weekly exercise combined with either healthy eating advice (Ex/HE), hypocaloric diet (Ex/Diet), or VLCD (Ex/VLCD)...
February 20, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28298393/a-role-for-leukocyte-integrins-and-extracellular-matrix-remodeling-of-adipose-tissue-in-the-risk-of-weight-regain-after-weight-loss
#8
RANDOMIZED CONTROLLED TRIAL
Nadia Jt Roumans, Roel G Vink, Parastoo Fazelzadeh, Marleen A van Baak, Edwin Cm Mariman
Background: Weight loss (WL) is often followed by weight regain after an energy-restricted dietary intervention (DI). When people are following a diet, the volume of an adipocyte decreases by loss of triglycerides, which creates stress between the cell contents and the surrounding extracellular matrix (ECM). Previously, we observed that genetic variations in ECM genes are associated with an increased risk of weight regain.Objective: We investigated the relation between the expression of ECM genes during WL and a period of weight stabilization (WS) and the risk of weight regain...
May 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28265828/liver-regeneration-is-impaired-in-mice-with-acute-exposure-to-a-very-low-carbohydrate-diet
#9
Hao Chen, Yandie Lin, Wu Sun, Yun Cai, Hao Li
BACKGROUND: The metabolic response to hepatic insufficiency has been implicated in the regulators of normal liver regeneration. Modulation of nutritional factors has been demonstrated to affect liver regeneration. Diets containing very low carbohydrate and high fat levels cause a unique metabolic state, the effect of which on liver regeneration is unknown. METHODS: Mice were placed on standard mice chow (ND) or a very low carbohydrate diet (VLCD) after 70% partial hepatectomy (PH)...
May 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28179648/diet-induced-weight-loss-decreases-adipose-tissue-oxygen-tension-with-parallel-changes-in-adipose-tissue-phenotype-and-insulin-sensitivity-in-overweight-humans
#10
R G Vink, N J Roumans, M Čajlaković, J P M Cleutjens, M V Boekschoten, P Fazelzadeh, M A A Vogel, E E Blaak, E C Mariman, M A van Baak, G H Goossens
BACKGROUND/OBJECTIVES: Although adipose tissue (AT) hypoxia is present in rodent models of obesity, evidence for this in humans is limited. Here, we investigated the effects of diet-induced weight loss (WL) on abdominal subcutaneous AT oxygen tension (pO2), AT blood flow (ATBF), AT capillary density, AT morphology and transcriptome, systemic inflammatory markers and insulin sensitivity in humans. SUBJECTS/METHODS: Fifteen overweight and obese individuals underwent a dietary intervention (DI), consisting of a 5-week very-low-calorie diet (VLCD, 500 kcal day(-1); WL), and a subsequent 4-week weight stable diet (WS)...
May 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28031781/intermittent-energy-restriction-in-type-2-diabetes-a-short-discussion-of-medication-management
#11
Sharayah Carter, Peter M Clifton, Jennifer B Keogh
AIM: To discuss type 2 diabetes mellitus (T2DM) medication changes required during the popular 5:2 intermittent energy restriction (IER) diet. METHODS: A search was conducted in MEDLINE, EMBASE, AMED, CINAHL and Cochrane library for original research articles investigating the use of very low calorie diets (VLCD) in people with T2DM. The search terms used included "VLCD" or "very low energy diet" or "very low energy restriction" or "IER" or "intermittent fasting" or "calorie restriction" or "diabetes mellitus type 2" and "type 2 diabetes"...
December 15, 2016: World Journal of Diabetes
https://www.readbyqxmd.com/read/27898428/beneficial-effects-of-a-dietary-weight-loss-intervention-on-human-gut-microbiome-diversity-and-metabolism-are-not-sustained-during-weight-maintenance
#12
Femke-Anouska Heinsen, Daniela Fangmann, Nike Müller, Dominik M Schulte, Malte C Rühlemann, Kathrin Türk, Ute Settgast, Wolfgang Lieb, John F Baines, Stefan Schreiber, Andre Franke, Matthias Laudes
OBJECTIVE: In the present study, we examined the effect of a very low-calorie diet(VLCD)-based obesity program on human gut microbiome diversity and metabolism during weight loss and weight maintenance. METHODS: Obese subjects underwent 3 months of VLCD followed by 3 months of weight maintenance. A lean and an obese control group were included. The microbiome was characterized by performing high-throughput dual-indexed 16S rDNA amplicon sequencing. RESULTS: At baseline, a significant difference in the Firmicutes/Bacteroidetes ratio between the lean and obese individuals was observed (p = 0...
2016: Obesity Facts
https://www.readbyqxmd.com/read/27826354/the-effects-on-weight-loss-and-gene-expression-in-adipose-and-hepatic-tissues-of-very-low-carbohydrate-and-low-fat-isoenergetic-diets-in-diet-induced-obese-mice
#13
Tomomi Yamazaki, Sumire Okawa, Mayumi Takahashi
BACKGROUND: Obesity is caused by excessive fat or carbohydrate intake. The improvement of obesity is an important issue, especially in Western societies. Both low-carbohydrate diet (LCD) and low-fat diet (LFD) are used to achieve weight loss in humans. To clarify the mechanisms underlying LCD-induced weight loss, especially in early stage, we compared the gene expression in liver, white adipose tissue (WAT) and brown adipose tissue (BAT) of a very-low carbohydrate diet (VLCD)- and LFD-fed diet-induced obese (DIO) mice...
2016: Nutrition & Metabolism
https://www.readbyqxmd.com/read/27812384/sweet-taste-preferences-before-and-after-an-intensive-medical-weight-loss-intervention
#14
K Asao, A E Rothberg, L Arcori, M Kaur, C E Fowler, W H Herman
OBJECTIVE: Medical weight loss could change sweet taste threshold and preferences. The decrease in sweet taste preferences may, in turn, help in the maintenance of weight loss. This study examined the association between sweet taste preferences at baseline and weight change during a medical weight management programme and the impact of diet-induced weight loss on sweet taste preferences. METHODS: Adult patients with body mass index ≥32 kg m(-2) were recruited from a medical weight management clinic...
June 2016: Obesity Science & Practice
https://www.readbyqxmd.com/read/27773549/effects-of-acute-dietary-weight-loss-on-postprandial-plasma-bile-acid-responses-in-obese-insulin-resistant-subjects
#15
F Samuel van Nierop, W Kulik, Erik Endert, Frank G Schaap, Steven W Olde Damink, Johannes A Romijn, Maarten R Soeters
BACKGROUND & AIMS: Bile acids (BA) are pleiotropic hormones affecting glucose and lipid metabolism. The physiochemical properties of different BA species affect their enterohepatic dynamics and their affinity for bile acid receptors. The BA pool composition is altered in patients with type 2 diabetes and obesity. In this study we used a 2-week very-low-calorie diet (VLCD) to investigate the effects of weight loss on BA pool composition and postprandial dynamics. METHODS: We performed mixed meal tests in obese, insulin resistant subjects before and after the VLCD...
October 13, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27733249/weight-loss-induced-by-very-low-calorie-diet-is-associated-with-a-more-beneficial-systemic-inflammatory-profile-than-by-roux-en-y-gastric-bypass
#16
COMPARATIVE STUDY
Mirjam A Lips, Jan Bert van Klinken, Hanno Pijl, Ignace Janssen, Ko Willems van Dijk, Frits Koning, Vanessa van Harmelen
INTRODUCTION: Weight loss interventions such as Roux-en-Y gastric bypass (RYGB) and very low calorie diets (VLCD) lead to improvement of glucose metabolism in obese individuals with type-2 diabetes. Weight loss can also positively influence the unfavorable inflammatory profile associated with obesity. However, a direct comparison of the effect of VLCD and RYGB on systemic inflammation is lacking. METHODS: Systemic inflammation was investigated in age- and BMI-matched morbidly obese T2DM women by determining the number and activation- or memory status of peripheral blood leukocytes by flow cytometry, in addition to measuring circulating levels of cytokines and CRP...
November 2016: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27715401/comparison-of-early-2-days-and-later-28-days-response-of-adipose-tissue-to-very-low-calorie-diet-in-obese-women
#17
Veronika Šrámková, Lenka Rossmeislová, Eva Krauzová, Jana Kračmerová, Michal Koc, Dominique Langin, Vladimír Štich, Michaela Šiklová
CONTEXT: Beneficial metabolic effects of calorie restriction found in the early stage of hypocalorie diets may be caused by the modulation of metabolic and endocrine function of adipose tissue. OBJECTIVE: The objective of the study was to compare metabolic and inflammation-related characteristics of sc adipose tissue (SAAT) in the early (2 d) and later (28 d) phase of a very low calorie diet (VLCD). Design, Setting, Intervention, and Patients: Seventeen moderately obese premenopausal women followed an 800 kcal/d VLCD for 28 days...
December 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27708846/alternate-day-versus-daily-energy-restriction-diets-which-is-more-effective-for-weight-loss-a-systematic-review-and-meta-analysis
#18
REVIEW
B A Alhamdan, A Garcia-Alvarez, A H Alzahrnai, J Karanxha, D R Stretchberry, K J Contrera, A F Utria, L J Cheskin
BACKGROUND: Alternate-day-fasting (ADF) has been proposed as an effective dieting method. Studies have found that it also can increase life span in rodents, and reduce inflammation in humans. The aim of this paper was to systematically review the efficacy of ADF compared to very-low-calorie dieting (VLCD) in terms of weight loss, and reduction of fat mass and fat-free mass. METHODS: Systematic review: PubMed literature searches were performed. Fixed review procedures were applied...
September 2016: Obesity Science & Practice
https://www.readbyqxmd.com/read/27698345/weight-losses-with-low-energy-formula-diets-in-obese-patients-with-and-without-type-2-diabetes-systematic-review-and-meta-analysis
#19
REVIEW
W S Leslie, R Taylor, L Harris, M E J Lean
AIM: To provide a systematic review, of published data, to compare weight losses following very low calorie (<800 kcal per day VLCD) or low-energy liquid-formula (>800 kcal per day LELD) diets, in people with and without type 2 diabetes mellitus (T2DM). METHODS: Systematic electronic searches of Medline (1946-2015) and Embase (1947-2015) to identify published studies using formula total diet replacement diets (VLCD/LELD). Random effects meta-analysis using weighted mean difference (WMD) in body weight between groups (with and without diabetes) as the summary estimate...
January 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27530911/acute-changes-in-non-esterified-fatty-acids-in-patients-with-type-2-diabetes-receiving-bariatric-surgery
#20
Reza Nemati, Jun Lu, Andrea Tura, Greg Smith, Rinki Murphy
BACKGROUND: The purpose of this study was to compare acute changes of non-esterified fatty acids (NEFA) in relation to beta cell function (BCF) and insulin resistance in obese patients with type 2 diabetes (T2D) who underwent laparoscopic gastric bypass (GBP), laparoscopic sleeve gastrectomy (SG) or very low calorie diet (VLCD). METHODS: In a non-randomised study, fasting plasma samples were collected from 38 obese patients with T2D, matched for age, body mass index (BMI) and glycaemic control, who underwent GBP (11) or SG (14) or VLCD (13)...
March 2017: Obesity Surgery
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