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https://www.readbyqxmd.com/read/29784793/camp-inducible-coactivator-crtc3-attenuates-brown-adipose-tissue-thermogenesis
#1
Young-Sil Yoon, Wen-Wei Tsai, Sam Van de Velde, Zhijiang Chen, Kuo-Fen Lee, Donald A Morgan, Kamal Rahmouni, Shigenobu Matsumura, Ezra Wiater, Youngsup Song, Marc Montminy
In response to cold exposure, placental mammals maintain body temperature by increasing sympathetic nerve activity in brown adipose tissue (BAT). Triggering of β-adrenergic receptors on brown adipocytes stimulates thermogenesis via induction of the cAMP/PKA pathway. Although cAMP response element-binding protein (CREB) and its coactivators-the cAMP-regulated transcriptional coactivators (CRTCs)-mediate transcriptional effects of cAMP in most tissues, other transcription factors such as ATF2 appear critical for induction of thermogenic genes by cAMP in BAT...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29783951/the-transcriptomic-and-proteomic-responses-of-daphnia-pulex-to-changes-in-temperature-and-food-supply-comprise-environment-specific-and-clone-specific-elements
#2
Dörthe Becker, Yann Reydelet, Jacqueline A Lopez, Craig Jackson, John K Colbourne, Susan Hawat, Michael Hippler, Bettina Zeis, Rüdiger J Paul
BACKGROUND: Regulatory adjustments to acute and chronic temperature changes are highly important for aquatic ectotherms because temperature affects their metabolic rate as well as the already low oxygen concentration in water, which can upset their energy balance. This also applies to severe changes in food supply. Thus, we studied on a molecular level (transcriptomics and/or proteomics) the immediate responses to heat stress and starvation and the acclimation to different temperatures in two clonal isolates of the model microcrustacean Daphnia pulex from more or less stressful environments, which showed a higher (clone M) or lower (clone G) tolerance to heat and starvation...
May 21, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29780356/physiological-and-molecular-mechanisms-of-methionine-restriction
#3
REVIEW
Mary Neslund Latimer, Khalid Walid Freij, Beth M Cleveland, Peggy R Biga
Methionine restriction (MR) has been studied extensively over the last 25 years for its role in altering metabolic hallmarks of disease. Animals subjected to MR, display changes in metabolic flexibility demonstrated by increases in energy expenditure, glucose tolerance, and lifespan. These changes have been well characterized in a number of model systems and significant progress has been made in understanding how hepatic fibroblast growth factor 21 links MR to several components of its metabolic phenotype...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29779496/invited-review-improving-feed-efficiency-of-beef-cattle-the-current-state-of-the-art-and-future-challenges
#4
D A Kenny, C Fitzsimons, S M Waters, M McGee
Improvements in feed efficiency of beef cattle have the potential to increase producer profitability and simultaneously lower the environmental footprint of beef production. Although there are many different approaches to measuring feed efficiency, residual feed intake (RFI) has increasingly become the measure of choice. Defined as the difference between an animal's actual and predicted feed intake (based on weight and growth), RFI is conceptually independent of growth and body size. In addition, other measurable traits related to energy expenditure such as estimates of body composition can be included in the calculation of RFI to also force independence from these traits...
May 21, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29777386/substrate-metabolism-during-ironman-triathlon-different-horses-on-the-same-courses
#5
Ed Maunder, Andrew E Kilding, Daniel J Plews
Ironman triathlons are ultra-endurance events of extreme duration. The performance level of those competing varies dramatically, with elite competitors finishing in ~ 8:00:00, and lower performing amateurs finishing in ~ 14-15:00:00. When applying appropriate values for swimming, cycling and running economies to these performance times, it is demonstrated that the absolute energy cost of these events is high, and the rate of energy expenditure increases in proportion with the athlete's competitive level...
May 18, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29774616/psychological-effects-of-belonging-to-a-facebook-weight-management-group-in-overweight-and-obese-adults-results-of-a-randomised-controlled-trial
#6
Monica Jane, Jonathan Foster, Martin Hagger, Suleen Ho, Robert Kane, Sebely Pal
This study was conducted to test whether the weight outcomes in an online social networking group were mediated by changes to psychological outcome measures in overweight and obese individuals, following a weight management programme delivered via Facebook. The data analysed in this study were collected during a three-armed, randomised, controlled clinical weight management trial conducted with overweight and obese adults over 24 weeks. Two intervention groups were given the same weight management programme: one within a Facebook group, along with peer support from other group members (the Facebook Group); the other group received the same programme in a pamphlet (the Pamphlet Group)...
May 18, 2018: Health & Social Care in the Community
https://www.readbyqxmd.com/read/29773650/the-exercise-inducible-bile-acid-receptor-tgr5-improves-skeletal-muscle-function-in-mice
#7
Takashi Sasaki, Ayane Kuboyama, Moeko Mita, Shotaro Murata, Makoto Shimizu, Jun Inoue, Kazutoshi Mori, Ryuichiro Sato
TGR5 (also known as G protein-coupled bile acid receptor 1, GPBAR1) is a G protein-coupled bile acid receptor that is expressed in many diverse tissues. TGR5 is involved in various metabolic processes, including glucose metabolism and energy expenditure; however, TGR5's function in skeletal muscle is not fully understood. Using both gain- and loss-of-function mouse models, we demonstrate here that Tgr5 activation promotes muscle cell differentiation and muscle hypertrophy. Both young and old transgenic mice with muscle-specific Tgr5 expression exhibited increased muscle strength...
May 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29772667/evaluation-of-energy-expenditure-and-oxidation-of-energy-substrates-in-adult-males-after-intake-of-meals-with-varying-fat-and-carbohydrate-content
#8
Edyta Adamska-Patruno, Lucyna Ostrowska, Anna Golonko, Barbara Pietraszewska, Joanna Goscik, Adam Kretowski, Maria Gorska
Obesity is a result of positive energy balance. The aim of this study was to measure (in crossover trials) the energy expenditure and oxidation of glucose and lipids, both at the fasting state and after an intake of meals with a varying macronutrient content, in normal-weight and overweight/obese people. In the study, 46 healthy adult males (23 with normal body weight and 23 overweight/obese), aged 21⁻58, were examined. During two consecutive visits, subjects received isocaloric standardized meals (450 kcal) with different content of basic nutrients...
May 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29772608/activity-behaviours-in-lean-and-morbidly-obese-pregnant-women
#9
Caterina Fazzi, Nor Mohd-Shukri, Fiona C Denison, David H Saunders, Jane E Norman, Rebecca M Reynolds
Interventions to increase physical activity in pregnancy are challenging for morbidly obese women. Targeting sedentary behaviours may be a suitable alternative to increase energy expenditure. We aimed to determine total energy expenditure, and energy expended in sedentary activities in morbidly obese and lean pregnant women. We administered the Pregnancy Physical Activity Questionnaire PPAQ (non-objective) and the Actical accelerometer (objective) to morbidly obese (BMI≥40kg/m²) and lean (BMI≤25Kg/M²) pregnant women recruited in early (<24 weeks), and late (≥24 weeks) gestation...
May 17, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29771295/the-association-between-objectively-measured-physical-activity-and-subsequent-health-care-utilization-in-older-men
#10
Lisa Langsetmo, Allyson M Kats, Peggy M Cawthon, Jane A Cauley, Tien N Vo, Brent C Taylor, Marcia L Stefanick, Nancy E Lane, Katie L Stone, Eric S Orwoll, John T Schousboe, Kristine E Ensrud
Background: To examine the associations between objective physical activity measures and subsequent health care utilization. Methods: We studied 1,283 men (mean age 79.1 years, SD 5.3) participating in the Osteoporotic Fractures in Men Study. Participants wore a SenseWear® Pro Armband monitor for 1 week. Data was summarized as daily (i) step counts, (ii) total energy expenditure, (iii) active energy expenditure, and (iv) activity time (sedentary, ≥ light, ≥ moderate)...
October 9, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29770924/roux-en-y-gastric-bypass-surgery-induced-weight-loss-and-metabolic-improvements-are-similar-in-tgr5-deficient-and-wildtype-mice
#11
Zheng Hao, R Leigh Townsend, Michael B Mumphrey, Thomas W Gettys, Sangho Yu, Heike Münzberg, Christopher D Morrison, Hans-Rudolf Berthoud
BACKGROUND AND PURPOSE: Roux-en-Y gastric bypass surgery (RYGB) remains one of the most effective treatments for obesity and type 2 diabetes. Despite this, the mechanisms through which it acts are still not well understood. Bile acid signaling through the transmembrane G-protein-coupled receptor TGR5 has been shown to have significant effects on metabolism and has recently been reported to be necessary for the full effects of vertical sleeve gastrectomy (VSG), a bariatric surgery with similar effects to RYGB...
May 16, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29766791/immunometabolic-changes-in-hepatocytes-arising-from-obesity-and-the-practice-of-physical-exercise
#12
Paula Alves Monteiro, Wagner Prado, Thiago Ricardo Dos Santos Tenório, Luciane Magri Tomaz, David H St-Pierre, Fabio Santos Lira
Over the recent years, a particular interest was shown towards understanding the roles of excessive hepatic fat accumulation and the development of obesity-related diseases. While hepatic triacylglycerol accumulation seems to be a response to the systemic increase of insulin release, fatty acid metabolites contribute to the progression of non-alcoholic fatty liver disease (NAFLD) to non-alcoholic steatohepatitis (NASH). It is widely accepted that NAFLD is a polygenic and multifactorial disease under the influence of critical behavioral factors such as overeating and sedentary lifestyles...
May 14, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29766773/effects-of-a-structured-physical-activity-program-on-habitual-physical-activity-and-body-composition-in-patients-with-chronic-kidney-disease-and-in-kidney-transplant-recipients
#13
Anna Masajtis-Zagajewska, Katarzyna Muras, Michał Nowicki
OBJECTIVES: In this study, we compared the effects of an individualized physical activity program on lifestyle, metabolic profile, body composition, and quality of life in kidney transplant recipients and patients with chronic kidney disease. MATERIALS AND METHODS: Our study included 24 kidney transplant recipients and 15 patients with chronic kidney disease at stage 3/4. Body composition (impedance spectroscopy) and habitual physical activity (accelerometry) assessed at baseline were used to prepare the individualized physical activity program...
May 16, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29765067/wildfire-smoke-impacts-activity-and-energetics-of-wild-bornean-orangutans
#14
W M Erb, E J Barrow, A N Hofner, S S Utami-Atmoko, E R Vogel
Indonesia's peatlands experience frequent and intense wildfires, producing hazardous smoke with consequences for human health, yet there is a lack of research into adverse effects on wildlife. We evaluated the effects of smoke on the activity and energy balance of Bornean orangutans (Pongo pygmaeus wurmbii) in a peat swamp forest at the Tuanan Research Station, Central Kalimantan. We collected behavioural data and urine samples from four adult flanged males before, during, and after wildfires between March 2015 and January 2016...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764614/use-and-physiological-responses-of-portable-dynamic-office-workstations-in-an-occupational-setting-a-field-study
#15
Vera Schellewald, Jens Kleinert, Rolf Ellegast
OBJECTIVE: The aim of this study was to investigate the use of two types of dynamic workstations (Deskbike, activeLife Trainer) and their effects on physiological activation in an occupational setting. METHODS: 30 employees were given access to the devices for 28 days. Frequency and duration of borrowing and use was recorded by a Chipcard-system. Physiological activation (energy expenditure, heart rate) while working in a seated position and using the workstations was measured with the activity tracker Fitbit Charge HR...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29756968/the-bfmnu-method-as-an-alternative-to-the-methods-in-use-based-on-energy-study-of-the-correlation-between-food-energy-and-body-mass
#16
Greta Rondini, Beatrice Olearo, José Miguel Soriano Del Castillo, Pietro Marco Boselli
INTRODUCTION: to establish slimming guidelines and any other changing treatments is useful to know the individual's energy expenditure due to the fact that, nowadays, the incidence of many diseases related to the loss of lean mass and the accumulation of adipose tissue has increased. The dietary treatments are carried out on calculating the energy contained in food, and then put in relation to the total energy expended by the body in order to produce changes in body mass. OBJECTIVE: the aim of this study was to evaluate the correlation between the food energy and body mass of different subjects in various pathophysiological conditions...
March 1, 2018: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29755330/the-high-costs-of-low-grade-inflammation-persistent-fatigue-as-a-consequence-of-reduced-cellular-energy-availability-and-non-adaptive-energy-expenditure
#17
REVIEW
Tamara E Lacourt, Elisabeth G Vichaya, Gabriel S Chiu, Robert Dantzer, Cobi J Heijnen
Chronic or persistent fatigue is a common, debilitating symptom of several diseases. Persistent fatigue has been associated with low-grade inflammation in several models of fatigue, including cancer-related fatigue and chronic fatigue syndrome. However, it is unclear how low-grade inflammation leads to the experience of fatigue. We here propose a model of an imbalance in energy availability and energy expenditure as a consequence of low-grade inflammation. In this narrative review, we discuss how chronic low-grade inflammation can lead to reduced cellular-energy availability...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29754194/loss-of-p2x7-receptor-function-dampens-whole-body-energy-expenditure-and-fatty-acid-oxidation
#18
Giacomo Giacovazzo, Savina Apolloni, Roberto Coccurello
The established role of ATP-responsive P2X7 receptor in inflammatory, neurodegenerative, and immune diseases is now expanding to include several aspects of metabolic dysregulation. Indeed, P2X7 receptors are involved in β cell function, insulin secretion, and liability to diabetes, and loss of P2X7 function may increase the risk of hepatic steatosis and disrupt adipogenesis. Recently, body weight gain, abnormal lipid accumulation, adipocyte hyperplasia, increased fat mass, and ectopic fat distribution have been found in P2X7 KO mice...
May 12, 2018: Purinergic Signalling
https://www.readbyqxmd.com/read/29749670/influence-of-water-depth-on-energy-expenditure-during-aquatic-walking-in-people-post-stroke
#19
Hyosok Lim, Daniel Azurdia, Brenda Jeng, Taeyou Jung
BACKGROUND AND PURPOSE: This study aimed to investigate the metabolic cost during aquatic walking at various depths in people post stroke. The secondary purpose was to examine the differences in metabolic cost between aquatic walking and land walking among individuals post stroke. DESIGN: A cross-sectional research design is used. METHODS: Twelve participants post stroke (aged 55.5 ± 13.3 years) completed 6 min of walking in 4 different conditions: chest-depth, waist-depth, and thigh-depth water, and land...
May 11, 2018: Physiotherapy Research International: the Journal for Researchers and Clinicians in Physical Therapy
https://www.readbyqxmd.com/read/29749628/maternal-activity-anxiety-and-protectiveness-during-moderate-nutrient-restriction-in-captive-baboons-papio-sp
#20
Lydia E O Light, Thad Q Bartlett, Annica Poyas, Mark J Nijland, Hillary F Huber, Cun Li, Kate Keenan, Peter W Nathanielsz
BACKGROUND: We hypothesized that maternal nutrient restriction (NR) would increase activity and behavioral indicators of anxiety (self-directed behaviors, SDBs) in captive baboons (Papio sp.) and result in more protective maternal styles. METHODS: Our study included 19 adult female baboons. Seven females ate ad libitum (control group), and eight females ate 30% less (NR group) and were observed through pregnancy and lactation. RESULTS: Control females engage in higher rates of SDB than NR females overall (P ≤ ...
May 11, 2018: Journal of Medical Primatology
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