keyword
MENU ▼
Read by QxMD icon Read
search

Respiratory Quotient

keyword
https://www.readbyqxmd.com/read/28514721/impact-of-gh-administration-on-athletic-performance-in-healthy-young-adults-a-systematic-review-and-meta-analysis-of-placebo-controlled-trials
#1
REVIEW
Kasper Hermansen, Mads Bengtsen, Michael Kjær, Peter Vestergaard, Jens Otto Lunde Jørgensen
OBJECTIVE: Illicit use of growth hormone (GH) as a performance-enhancing drug among athletes is prevalent, although the evidence of such effects in healthy, young subjects is sparse. We therefore performed a meta-analysis of published studies on the effect of GH administration on body composition, substrate metabolism, and athletic performance in healthy, young subjects. DESIGN: The English-language based databases PubMed, EMBASE, and Cochrane Central Register of Controlled Trials were searched, and eligible articles were reviewed in accordance with the PRISMA guidelines...
May 10, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28506901/new-isoflavonoids-from-the-extract-of-rhynchosia-precatoria-humb-bonpl-ex-willd-dc-and-their-antimycobacterial-activity
#2
Enrique Wenceslao Coronado-Aceves, Giulia Gigliarelli, Adriana Garibay-Escobar, Ramón Enrique Robles Zepeda, Massimo Curini, Jaime López Cervantes, Clara Inés Espitia-Pinzón, Stefano Superchi, Stefania Vergura, Maria Carla Marcotullio
ETHNOPHARMACOLOGY RELEVANCE: The evaluation of the antimycobacterial activity of extracts of medicinal plants used by Mayos against tuberculosis and respiratory problems, allowed the identification of Rhynchosia precatoria (Humb. & Bonpl. ex Willd.) DC (Fabaceae) as the best candidate to find new antimycobacterial compounds. AIM OF THE STUDY: To isolate and characterize the compounds of R. precatoria responsible for the inhibitory and bactericidal activity against Mycobacterium tuberculosis H37Rv and Mycobacterium smegmatis ATCC 700084...
May 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28486426/a-low-glycaemic-index-diet-incorporating-isomaltulose-is-associated-with-lower-glycaemic-response-and-variability-and-promotes-fat-oxidation-in-asians
#3
Christiani Jeyakumar Henry, Bhupinder Kaur, Rina Yu Chin Quek, Stefan Gerardus Camps
Low glycaemic index (GI) foods minimize large blood glucose fluctuations and have been advocated to enhance fat oxidation and may contribute to weight management. We determined whether the inclusion of isomaltulose compared to sucrose in a low/high GI meal sequence can modulate the glycaemic response and substrate oxidation in an Asian population. Twenty Chinese men (body mass index (BMI): 17-28 kg/m²) followed a 24 h low GI (isomaltulose, Palatinose(TM)) or high GI (sucrose) diet in a randomized double-blind, controlled cross-over design...
May 9, 2017: Nutrients
https://www.readbyqxmd.com/read/28482304/a-comparison-of-pm-exposure-related-to-emission-hotspots-in-a-hot-and-humid-urban-environment-concentrations-compositions-respiratory-deposition-and-potential-health-risks
#4
Siming You, Zhiyi Yao, Yanjun Dai, Chi-Hwa Wang
Particle number concentration, particle size distribution, and size-dependent chemical compositions were measured at a bus stop, alongside a high way, and at an industrial site in a tropical city. It was found that the industry case had 4.93×10(7)-7.23×10(7) and 3.44×10(4)-3.69×10(4)#/m(3) higher concentration of particles than the bus stop and highway cases in the range of 0.25-0.65μm and 2.5-32μm, respectively, while the highway case had 6.01×10(5) and 1.86×10(3)#/m(3) higher concentration of particles than the bus stop case in the range of 0...
May 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28482110/functional-multiple-indicators-multiple-causes-measurement-error-models
#5
Carmen D Tekwe, Roger S Zoh, Fuller W Bazer, Guoyao Wu, Raymond J Carroll
Objective measures of oxygen consumption and carbon dioxide production by mammals are used to predict their energy expenditure. Since energy expenditure is not directly observable, it can be viewed as a latent construct with multiple physical indirect measures such as respiratory quotient, volumetric oxygen consumption, and volumetric carbon dioxide production. Metabolic rate is defined as the rate at which metabolism occurs in the body. Metabolic rate is also not directly observable. However, heat is produced as a result of metabolic processes within the body...
May 8, 2017: Biometrics
https://www.readbyqxmd.com/read/28472467/hypothalamic-regulation-of-liver-and-muscle-nutrient-partitioning-by-brain-specific-carnitine-palmitoyltransferase-1c-cpt1c-in-male-mice
#6
Macarena Pozo, Rosalía Rodríguez-Rodríguez, Sara Ramírez, Patricia Seoane-Collazo, Miguel López, Dolors Serra, Laura Herrero, Núria Casals
Carnitine palmitoyltransferase 1C (CPT1C), a brain-specific protein localized in the endoplasmic reticulum of neurons, is expressed in almost all brain regions. Based on global knockout (KO) models, CPT1C has demonstrated relevance in hippocampus-dependent spatial learning as well as in hypothalamic regulation of energy balance. Specifically, it has been shown that CPT1C is protective against high-fat diet-induced obesity (DIO), and that CPT1C KO mice show reduced peripheral fatty acid oxidation (FAO) both during fasting and DIO...
May 3, 2017: Endocrinology
https://www.readbyqxmd.com/read/28446382/compensatory-mechanisms-activated-with-intermittent-energy-restriction-a-randomized-control-trial
#7
Sílvia Ribeiro Coutinho, Eline Holli Halset, Sigrid Gåsbakk, Jens F Rehfeld, Bård Kulseng, Helen Truby, Cátia Martins
BACKGROUND & AIMS: Strong compensatory responses, with reduced resting metabolic rate (RMR), increased exercise efficiency (ExEff) and appetite, are activated when weight loss (WL) is achieved with continuous energy restriction (CER), which try to restore energy balance. Intermittent energy restriction (IER), where short spells of energy restriction are interspaced by periods of habitual energy intake, may offer some protection in minimizing those responses. We aimed to compare the effect of IER versus CER on body composition and the compensatory responses induced by WL...
April 7, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28443536/effects-of-nesting-material-on-energy-homeostasis-in-balb-canncrl-c57bl-6ncrl-and-crl-cd1-icr-mice-housed-at-20-%C3%A2-c
#8
Daniel Taylor, Angela Green, Brianna Gaskill
Discrepancies exist between the preferred temperature range for mice (26 to 32 °C) and current recommendations (20 to26 °C), which may alter metabolism and negatively affect studies using mice. Previous research indicates that nesting materialcan alleviate cold stress in mice; therefore, we sought to determine the effects of the amount of nesting material provided(0, 6, or 12 g) on heat energy loss and energy balance in 3 mouse strains housed at currently recommended temperatures duringthe daytime, a period of presumed inactivity...
April 25, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28437574/dietary-lactalbumin-and-lactoferrin-interact-with-inulin-to-modulate-energy-balance-in-obese-rats
#9
Arashdeep Singh, Rizaldy C Zapata, Adel Pezeshki, Prasanth K Chelikani
OBJECTIVE: To determine whether diets enriched with the whey protein components lactalbumin and lactoferrin interact additively with inulin to improve energy balance by decreasing food intake and body weight (BW). METHODS: In four experiments, diet-induced obese rats were randomized to diets containing either lactalbumin or lactoferrin at low (20% kcal) or high (40% kcal) doses, and inulin at low (7.5% w/w) or high (15% w/w) doses, alone or in combination. Energy intake (EI), energy expenditure (EE), respiratory quotient (RQ), BW, body composition, plasma insulin, and leptin concentrations were measured...
April 24, 2017: Obesity
https://www.readbyqxmd.com/read/28434207/maternal-rates-of-lipolysis-and-glucose-production-in-late-pregnancy-are-independently-related-to-fetal-weight
#10
Barbro Diderholm, Kathryn Beardsall, Peter Murgatroyd, Christoph Lees, Jan Gustafsson, David Dunger
OBJECTIVE: Associations between maternal glucose levels and increased fetal growth are well established and independent relationships with maternal weight, weight gain and insulin resistance are also observed. The relative roles of lipolysis and glucose production in the determination of these observations remain unclear. DESIGN: We examined, through detailed physiological studies, the relationship between maternal late gestational energy substrate production (glucose and glycerol), maternal weight and weight gain, and estimated fetal size in the third trimester...
April 23, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28432665/systemic-and-microcirculatory-effects-of-blood-transfusion-in-experimental-hemorrhagic-shock
#11
Gonzalo Ferrara, Vanina S Kanoore Edul, Héctor S Canales, Enrique Martins, Carlos Canullán, Gastón Murias, Mario O Pozo, Juan F Caminos Eguillor, María G Buscetti, Can Ince, Arnaldo Dubin
BACKGROUND: The microvascular reperfusion injury after retransfusion has not been completely characterized. Specifically, the question of heterogeneity among different microvascular beds needs to be addressed. In addition, the identification of anaerobic metabolism is elusive. The venoarterial PCO2 to arteriovenous oxygen content difference ratio (Pv-aCO2/Ca-vO2) might be a surrogate for respiratory quotient, but this has not been validated. Therefore, our goal was to characterize sublingual and intestinal (mucosal and serosal) microvascular injury after blood resuscitation in hemorrhagic shock and its relation with O2 and CO2 metabolism...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28386235/polyunsaturated-fatty-acids-stimulate-de-novo-lipogenesis-and-improve-glucose-homeostasis-during-refeeding-with-high-fat-diet
#12
Raffaella Crescenzo, Arianna Mazzoli, Rosa Cancelliere, Francesca Bianco, Antonia Giacco, Giovanna Liverini, Abdul G Dulloo, Susanna Iossa
Aims: The recovery of body weight after a period of caloric restriction is accompanied by an enhanced efficiency of fat deposition and hyperinsulinemia-which are exacerbated by isocaloric refeeding on a high fat diet rich in saturated and monounsaturated fatty acids (SFA-MUFA), and poor in polyunsaturated fatty acids (PUFA), and associated with a blunting of de novo lipogenesis in adipose tissue and liver. As high fat diets rich in PUFA have been shown to limit the excess fat deposition and improve glucose homeostasis, we investigated here the extent to which de novo lipogenesis in liver and adipose tissues (white and brown), as well as hepatic oxidative stress, are influenced by refeeding on diets rich in PUFA...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28380542/effect-of-condensed-tannin-extract-supplementation-on-growth-performance-nitrogen-balance-gas-emissions-and-energetic-losses-of-beef-steers
#13
P J Ebert, E A Bailey, A L Shreck, J S Jennings, N A Cole
Condensed tannins (CT) may decrease greenhouse gas emissions and alter the site of N excreted by ruminants. We evaluated the effect of top-dressing a steam-flaked corn-based finishing diet (14.4% CP and NEg 1.47 Mcal/kg) for beef cattle with a commercially available CT extract at 3 levels (0, 0.5, and 1.0% of diet, DM basis). Angus-crossbred steers ( = 27; 350 ± 32 kg initial BW) were individually fed via Calan gates for 126 d. Diet digestibility and N balance were estimated after 34 and 95 d on feed (Phase 1 and Phase 2, respectively) using titanium dioxide as a marker of fecal output and the creatinine:BW ratio as a marker for urine output...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28378846/forearm-to-fingertip-skin-temperature-gradients-in-the-thermoneutral-zone-were-significantly-related-to-resting-metabolic-rate-potential-implications-for-nutrition-research
#14
K Pathak, E K Calton, M J Soares, Y Zhao, A P James, K Keane, P Newsholme
BACKGROUND: Resting metabolic rate (RMR) should be measured in the thermoneutral zone (TNZ). Forearm to fingertip skin temperature gradients (FFG) could serve as an objective measure of this pre-condition. SUBJECTS/METHODS: Eighty-six adult Australians were studied at 25 °C in a temperature-controlled chamber. Measurements of overnight fasted RMR, respiratory quotient (RQ) and FFG were complemented by clinical biochemistry. McAuley's Index of insulin sensitivity (McA_ISI) and presence of metabolic syndrome was determined...
April 5, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28371517/role-of-vitamin-d-in-energy-and-bone-metabolism-in-postmenopausal-women-with-type-2-diabetes-mellitus-a-6-month-follow-up-evaluation
#15
Makiko Ogata, Naoko Iwasaki, Risa Ide, Miho Takizawa, Mizuho Tanaka, Tamaki Tetsuo, Asako Sato, Yasuko Uchigata
INTRODUCTION: Resting energy expenditure (REE) was associated with a serum bone turnover marker in postmenopausal women with type 2 diabetes (T2DMPW) in our cross-sectional study. To clarify the fundamental pathologic factor for the correlation of bone metabolism and basal metabolism in type 2 diabetes, a 6-month prospective follow-up study was performed with supplementation of vitamin D. METHODS: 44 T2DMPW were enrolled. The following factors were evaluated at the beginning and the end of the summer: procollagen type 1 N-terminal propeptide (P1NP), carboxy-terminal collagen crosslinks-1 (CTX-1), intact parathyroid hormone, and 25[OH]D, as well as diabetic complications, body composition, respiratory quotient(RQ), and REE...
March 31, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28359360/postprandial-changes-in-glucose-oxidation-and-insulin-sensitivity-in-metabolic-syndrome-influence-of-fibroblast-growth-factor-21-and-vitamin-d-status
#16
Kaveri Pathak, Mario J Soares, Yun Zhao, Anthony P James, Jillian L Sherriff, Philip Newsholme
OBJECTIVE: Metabolic inflexibility due to insulin resistance has been reported in metabolic syndrome (MetS). Fibroblast growth factor 21 (FGF21) and vitamin D status may improve insulin sensitivity. The aim of this study was to investigate glucose-induced thermogenesis and oxidation in MetS, and to examine whether changes in FGF21 or prevailing vitamin D status modulated defined metabolic parameters. METHODS: Forty-eight overweight and obese older adults (14 men, 34 women; ages 51 ± 15 y) were studied...
May 2017: Nutrition
https://www.readbyqxmd.com/read/28285649/pioglitazone-induced-improvements-in-insulin-sensitivity-occur-without-concomitant-changes-in-muscle-mitochondrial-function
#17
Sudip Bajpeyi, Magdalena Pasarica, Kevin E Conley, Bradley R Newcomer, Sharon A Jubrias, Cecilia Gamboa, Kori Murray, Olga Sereda, Lauren M Sparks, Steven R Smith
AIMS: Pioglitazone (Pio) is known to improve insulin sensitivity in skeletal muscle. However, the role of Pio in skeletal muscle lipid metabolism and skeletal muscle oxidative capacity is not clear. The aim of this study was to determine the effects of chronic Pio treatment on skeletal muscle mitochondrial activity in individuals with type 2 diabetes (T2D). MATERIALS AND METHODS: Twenty-four participants with T2D (13M/11F 53.38±2.1years; BMI 36.47±1.1kg/m(2)) were randomized to either a placebo (CON, n=8) or a pioglitazone (PIO, n=16) group...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28262678/eight-weeks-of-overfeeding-alters-substrate-partitioning-without-affecting-metabolic-flexibility-in-men
#18
C M Peterson, B Zhang, D L Johannsen, E Ravussin
BACKGROUND/OBJECTIVE: Impairments in metabolic flexibility (MF) and substrate handling are associated with metabolic syndrome. However, it is unknown whether metabolic inflexibility causes insulin resistance. We therefore measured MF and substrate handling before and after 8 weeks of overfeeding in initially healthy adults as a model of the early stages of insulin resistance. SUBJECTS/METHODS: Twenty-nine healthy men (27±5 years old; body mass index 25.5±2.3 kg m(-2)) were overfed by 40% above baseline energy requirements for 8 weeks and gained 7...
March 28, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28245949/atmospheric-size-resolved-trace-elements-in-a-city-affected-by-non-ferrous-metal-smelting-indications-of-respiratory-deposition-and-health-risk
#19
Yan Lyu, Kai Zhang, Fahe Chai, Tiantao Cheng, Qing Yang, Zilong Zheng, Xiang Li
This study examines size-resolved heavy metal data for particles sampled near an urban site affected by non-ferrous metal smelting in China with a focus on how particle sizes impact regional respiratory deposition behavior. Particles with aerodynamic diameters between 0.43 and 9 μm were collected during winter haze episodes from December 2011 to January 2012. The results showed that concentrations of individual trace elements ranged from ∼10(-2)-∼10(4) ng/m(3). Mass size distributions exhibit that Cu, Zn, As, Se, Ag, Cd, TI, and Pb have unimodal peak in fine particles range (<2...
February 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28245284/metabolically-distinct-weight-loss-by-10-12-cla-and-caloric-restriction-highlight-the-importance-of-subcutaneous-white-adipose-tissue-for-glucose-homeostasis-in-mice
#20
Laura J den Hartigh, Shari Wang, Leela Goodspeed, Tomasz Wietecha, Barbara Houston, Mohamed Omer, Kayoko Ogimoto, Savitha Subramanian, G A Nagana Gowda, Kevin D O'Brien, Karl J Kaiyala, Gregory J Morton, Alan Chait
BACKGROUND: Widely used as a weight loss supplement, trans-10,cis-12 conjugated linoleic acid (10,12 CLA) promotes fat loss in obese mice and humans, but has also been associated with insulin resistance. OBJECTIVE: We therefore sought to directly compare weight loss by 10,12 CLA versus caloric restriction (CR, 15-25%), an acceptable healthy method of weight loss, to determine how 10,12 CLA-mediated weight loss fails to improve glucose metabolism. METHODS: Obese mice with characteristics of human metabolic syndrome were either supplemented with 10,12 CLA or subjected to CR to promote weight loss...
2017: PloS One
keyword
keyword
30250
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"