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https://www.readbyqxmd.com/read/28338358/a-mismatch-between-athlete-practice-and-current-sports-nutrition-guidelines-among-elite-female-and-male-middle-and-long-distance-athletes
#1
Ida Aliisa Heikura, Trent Stellingwerff, Antti A Mero, Arja Leena Tuulia Uusitalo, Louise Mary Burke
Contemporary nutrition guidelines promote a variety of periodized and time-sensitive recommendations, but current information regarding the knowledge and practice of these strategies among world-class athletes is limited. The aim of this study was to investigate this theme by implementing a questionnaire on dietary periodization practices in national/international level female (n=27) and male (n=21) middle- and long-distance runners/race-walkers. The questionnaire aimed to gain information on between and within-day dietary choices, as well as timing of pre- and post-training meals and practices of training with low or high carbohydrate (CHO) availability...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28293041/association-of-socioeconomic-stratification-with-plasmatic-markers-of-lipoperoxidation-and-antioxidants-in-venezuelan-school-age-children
#2
Nelina Ruiz-Fernández, Virgilio Bosch, Maria Isabel Giacopini
OBJETIVE: To establish association between socioeconomic status and plasmatic markers of lipoperoxidation and antioxidants in Venezuelan school-age children from the middle-class and in critical poverty. METHODS: Cross-sectional study with a sample of 114 school-age children (aged 7-9). The socioeconomic status, dietary intake of macro and micro-nutrients, weight, height, lipid profile, indicators of lipid peroxidation and enzymatic and non-enzymatic antioxidants were determined...
December 30, 2016: Colombia Médica: CM
https://www.readbyqxmd.com/read/28265828/liver-regeneration-is-impaired-in-mice-with-acute-exposure-to-a-very-low-carbohydrate-diet
#3
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)...
March 6, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28257054/high-bacterial-agglutination-activity-in-a-single-crd-c-type-lectin-from-spodoptera-exigua-lepidoptera-noctuidae
#4
Leila Gasmi, Juan Ferré, Salvador Herrero
Lectins are carbohydrate-interacting proteins that play a pivotal role in multiple physiological and developmental aspects of all organisms. They can specifically interact with different bacterial and viral pathogens through carbohydrate-recognition domains (CRD). In addition, lectins are also of biotechnological interest because of their potential use as biosensors for capturing and identifying bacterial species. In this work, three C-type lectins from the Lepidoptera Spodoptera exigua were produced as recombinant proteins and their bacterial agglutination properties were characterized...
March 1, 2017: Biosensors
https://www.readbyqxmd.com/read/28256458/fats-fatty-acids-in-indian-diets-time-for-serious-introspection
#5
REVIEW
Indu Mani, Anura V Kurpad
Recommended dietary allowances for fat and fatty acid (FA) intakes are set on global standards aimed at prevention of lifestyle diseases. Yet, the fat composition of a diet is both ethnic/region specific as well as income dependent. Indian diets are predominantly vegetarian and relatively low in fat. Furthermore, the main sources of fat are of plant origin rather than animal origin. This results in a diet that is relatively low in saturated FA, high in n-6 polyunsaturated fatty acids (PUFA), and very low in n-3 PUFA...
October 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28240369/growth-reduction-after-defoliation-is-independent-of-co2-supply-in-deciduous-and-evergreen-young-oaks
#6
Sandra Schmid, Sara Palacio, Günter Hoch
Reduced productivity of trees after defoliation might be caused by limited carbon (C) availability. We investigated the combined effect of different atmospheric CO2 concentrations (160, 280 and 560 ppm) and early season defoliation on the growth and C reserves (nonstructural carbohydrates (NSC)) of saplings of two oak species with different leaf habits (deciduous Quercus petraea and evergreen Quercus ilex). In both species, higher CO2 supply significantly enhanced growth. Defoliation had a strong negative impact on growth (stronger for Q...
February 27, 2017: New Phytologist
https://www.readbyqxmd.com/read/28239404/impact-of-a-6-week-non-energy-restricted-ketogenic-diet-on-physical-fitness-body-composition-and-biochemical-parameters-in-healthy-adults
#7
Paul Urbain, Lena Strom, Lena Morawski, Anja Wehrle, Peter Deibert, Hartmut Bertz
BACKGROUND: The ketogenic diet (KD) is a very low-carbohydrate, high-fat and adequate-protein diet that without limiting calories induces different metabolic adaptations, eg, increased levels of circulating ketone bodies and a shift to lipid metabolism. Our objective was to assess the impact of a 6-week non-energy-restricted KD in healthy adults beyond cohorts of athletes on physical performance, body composition, and blood parameters. METHODS: Our single arm, before-and-after comparison study consisted of a 6-week KD with a previous preparation period including detailed instructions during classes and individual counselling by a dietitian...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28236296/different-types-of-dietary-advice-for-women-with-gestational-diabetes-mellitus
#8
REVIEW
Shanshan Han, Philippa Middleton, Emily Shepherd, Emer Van Ryswyk, Caroline A Crowther
BACKGROUND: Dietary advice is the main strategy for managing gestational diabetes mellitus (GDM). It remains unclear what type of advice is best. OBJECTIVES: To assess the effects of different types of dietary advice for women with GDM for improving health outcomes for women and babies. SEARCH METHODS: We searched Cochrane Pregnancy and Childbirth's Trials Register (8 March 2016), PSANZ's Trials Registry (22 March 2016) and reference lists of retrieved studies...
February 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28225305/limited-carbohydrate-refeeding-instruction-for-long-term-weight-maintenance-following-a-ketogenic-very-low-calorie-meal-plan
#9
J J Chang, J Bena, S Kannan, J Kim, B Burguera, S R Kashyap
OBJECTIVE: Weight loss maintenance following very-low-calorie meal plans is poorly studied. This report describes weight loss efficacy and predictors of weight loss maintenance of a ketogenic, very-low-calorie meal plan (protein-sparing modified fast, PSMF) in people with obesity. METHODS: 127 consecutive adults in the PSMF meal plan (27.2 ±19.5 weeks) and 48 adults on a conventional, hypocaloric meal plan (23.6 ±20.8 weeks) were retrospectively studied for percent weight change from baseline to end of intervention and at 6, 12, and 24 months post-intervention...
February 22, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28222178/effect-of-meal-composition-on-postprandial-lipid-concentrations-and-lipoprotein-particle-numbers-a-randomized-cross-over-study
#10
Meena Shah, Manall Jaffery, Beverley Adams-Huet, Brian Franklin, Jonathan Oliver, Joel Mitchell
BACKGROUND: It is unclear how high-protein (HP) and high-monounsaturated fat (HMF) meals affect postprandial blood lipids and lipoprotein particle numbers (LPN). PURPOSE: To compare a HP versus a HMF meal on postprandial lipid and LPN responses. METHODS: Twenty-four participants (age: 36.3±15.0 years; body mass index: 23.6±2.0 kg/m2; 45.8% female) were fed a HP (31.9% energy from protein) and a HMF (35.2% fat and 20.7% monounsaturated fat) meal in a randomized cross-over trial design...
2017: PloS One
https://www.readbyqxmd.com/read/28212341/physicochemical-characterization-and-biological-activities-of-the-triterpenic-mixture-%C3%AE-%C3%AE-amyrenone
#11
Rosilene G S Ferreira, Walter F Silva Júnior, Valdir F Veiga Junior, Ádley A N Lima, Emerson S Lima
α-Amyrenone and β-amyrenone are triterpenoid isomers that occur naturally in very low concentrations in several oleoresins from Brazilian Amazon species of Protium (Burseraceae). This mixture can also be synthesized by oxidation of α,β-amyrins, obtained as major compounds from the same oleoresins. Using a very simple, high yield procedure, and using a readily commercially available mixture of α,β-amyrins as substrate, the binary compound α,β-amyrenone was synthesized and submitted to physico-chemical characterization using different techniques such as high-performance liquid chromatography, nuclear magnetic resonance (¹H and (13)C), mass spectrometry, scanning electron microscopy, differential scanning calorimetry, thermogravimetry and derivative thermogravimetry, and Fourier transform infrared spectroscopy (FTIR)...
February 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28207851/impact-of-levels-of-total-digestible-nutrients-on-microbiome-enzyme-profile-and-degradation-of-feeds-in-buffalo-rumen
#12
Anju Kala, D N Kamra, Avinash Kumar, Neeta Agarwal, L C Chaudhary, C G Joshi
The present study was aimed at understanding a shift in rumen microbiome of buffaloes fed various levels of total digestible nutrients. To understand the process, the metagenomics of rumen microbes, in vivo and in vitro rumen fermentation studies were carried out. Three rumen fistulated adult male Murrah buffaloes were fed three isonitrogenous diets varying in total digestible nutrients (70, 85 and 100% of TDN requirement) in 3X3 switch over design. On dry matter basis, wheat straw/ roughage content were 81, 63 and 51% and that of maize grain was 8, 16 and 21% in three diets respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28193599/an-online-intervention-comparing-a-very-low-carbohydrate-ketogenic-diet-and-lifestyle-recommendations-versus-a-plate-method-diet-in-overweight-individuals-with-type-2-diabetes-a-randomized-controlled-trial
#13
Laura R Saslow, Ashley E Mason, Sarah Kim, Veronica Goldman, Robert Ploutz-Snyder, Hovig Bayandorian, Jennifer Daubenmier, Frederick M Hecht, Judith T Moskowitz
BACKGROUND: Type 2 diabetes is a prevalent, chronic disease for which diet is an integral aspect of treatment. In our previous trial, we found that recommendations to follow a very low-carbohydrate ketogenic diet and to change lifestyle factors (physical activity, sleep, positive affect, mindfulness) helped overweight people with type 2 diabetes or prediabetes improve glycemic control and lose weight. This was an in-person intervention, which could be a barrier for people without the time, flexibility, transportation, social support, and/or financial resources to attend...
February 13, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28185855/biphasic-effect-of-alpha-linolenic-acid-on-glucose-induced-dysmorphogenesis-and-lipoperoxidation-in-whole-rat-embryo-in-culture
#14
Gladys Chirino-Galindo, Jorge-Israel Barrera-Argüelles, Ninna-Leslie Trejo-González, Ricardo Mejía-Zepeda, Martín Palomar-Morales
Type 1 diabetes mellitus complicated with pregnancy, know as diabetic embryopathy, is the cause of neonatal malformations and low for gestational age neonates. With the use of the whole-embryo culture system, it has been demonstrated that high glucose causes embryo dysmorphogenesis, and that oxidative stress appears to be the main mechanism. In recent years, beneficial effect of omega-3 fatty acids has been demonstrated in various diabetic models, and in diabetic complications. Since diabetic embryopathy is mediated probably through membrane lipoperoxidation, This study was designed to find if omega-3 fatty acids could ameliorate the effect of high glucose over the dysmorphogenesis of whole rat embryo in culture...
February 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28166253/effects-of-a-very-high-saturated-fat-diet-on-ldl-particles-in-adults-with-atherogenic-dyslipidemia-a-randomized-controlled-trial
#15
Sally Chiu, Paul T Williams, Ronald M Krauss
BACKGROUND: Previous studies have shown that increases in LDL-cholesterol resulting from substitution of dietary saturated fat for carbohydrate or unsaturated fat are due primarily to increases in large cholesterol-enriched LDL, with minimal changes in small, dense LDL particles and apolipoprotein B. However, individuals can differ by their LDL particle distribution, and it is possible that this may influence LDL subclass response. OBJECTIVE: The objective of this study was to test whether the reported effects of saturated fat apply to individuals with atherogenic dyslipidemia as characterized by a preponderance of small LDL particles (LDL phenotype B)...
2017: PloS One
https://www.readbyqxmd.com/read/28163784/feasibility-of-co2-mitigation-and-carbohydrate-production-by-microalga-scenedesmus-obliquus-cnw-n-used-for-bioethanol-fermentation-under-outdoor-conditions-effects-of-seasonal-changes
#16
Shih-Hsin Ho, Yi-Di Chen, Ching-Yu Chang, Yen-Ying Lai, Chun-Yen Chen, Akihiko Kondo, Nan-Qi Ren, Jo-Shu Chang
BACKGROUND: Although outdoor cultivation systems have been widely used for mass production of microalgae at a relatively low cost, there are still limited efforts on outdoor cultivation of carbohydrate-rich microalgae that were further used as feedstock for fermentative bioethanol production. In particular, the effects of seasonal changes on cell growth, CO2 fixation, and carbohydrate production of the microalgae have not been well investigated. RESULTS: This work demonstrates the feasibility of using outdoor tubular photobioreactors (PBR) for whole-year-round cultivation of a carbohydrate-rich microalga Scenedesmus obliquus CNW-N in southern Taiwan...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28162831/bio-environmental-factors-associated-with-myopia-an-updated-review
#17
V Galvis, A Tello, P A Camacho, M M Parra, J Merayo-Lloves
Experimental studies in animals, as well as observational and intervention studies in humans, seem to support the premise that the development of juvenile myopia is promoted by a combination of the effect of genetic and environmental factors, with a complex interaction between them. The very rapid increase in myopia rates in some parts of the world, such as Southeast Asia, supports a significant environmental effect. Several lines of evidence suggest that humans might respond to various external factors, such as increased activity in near vision, increased educational pressure, decreased exposure to sunlight outdoors, dietary changes (including increased intake of carbohydrates), as well as low light levels indoors...
February 2, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28153654/reduction-of-total-labor-length-through-the-addition-of%C3%A2-parenteral-dextrose-solution-in-induction-of-labor-in%C3%A2-nulliparous-results-of-dextrons-prospective-randomized-controlled-trial
#18
Josianne Paré, Jean-Charles Pasquier, Antoine Lewin, William Fraser, Yves-André Bureau
BACKGROUND: Prolonged labor is a significant cause of maternal and fetal morbidity and very few interventions are known to shorten labor course. Skeletal muscle physiology suggests that glucose supplementation might improve muscle performance in case of prolonged exercise and this situation is analogous to the gravid uterus during delivery. Therefore, it seemed imperative to evaluate the impact of adding carbohydrate supplements on the course of labor. OBJECTIVE: We sought to provide evidence as to whether intravenous glucose supplementation during labor induction in nulliparous women can reduce total duration of active labor...
January 30, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28130130/structural-studies-of-a-vasorelaxant-lectin-from-dioclea-reflexa-hook-seeds-crystal-structure-molecular-docking-and-dynamics
#19
Vanir Reis Pinto-Junior, Vinicius José Silva Osterne, Mayara Queiroz Santiago, Jorge Luis Almeida Correia, Francisco Nascimento Pereira-Junior, Rodrigo Bainy Leal, Maria Gonçalves Pereira, Larissa Silva Chicas, Celso Shiniti Nagano, Bruno Anderson Matias Rocha, José Caetano Silva-Filho, Wandemberg Paiva Ferreira, Cíntia Renata Costa Rocha, Kyria Santiago Nascimento, Ana Maria Sampaio Assreuy, Benildo Sousa Cavada
The three-dimensional structure of Dioclea reflexa seed lectin (DrfL) was studied in detail by a combination of X-ray crystallography, molecular docking and molecular dynamics. DrfL was purified by affinity chromatography using Sephadex G-50 matrix. Its primary structure was obtained by mass spectrometry, and crystals belonging to orthorhombic space group P212121 were grown by the vapor diffusion method at 293K. The crystal structure was solved at 1.765Å and was very similar to that of other lectins from the same subtribe...
January 24, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28109411/the-challenge-in-improving-the-diets-of-supplemental-nutrition-assistance-program-recipients-a-historical-commentary
#20
EDITORIAL
Barry M Popkin
This paper provides a historical background for the current nutrition issues faced by the Supplemental Nutrition Assistance Program (SNAP). The Food Stamp Program evolved into SNAP during a period when U.S. diets, particularly those of the poor, became less healthful. During the 1960s, the U.S. (Kennedy-Johnson era) addressed malnutrition first with a pilot project focused on retail sales and cash food stamps, which showed that low-income consumers purchased relatively healthy foods for a fairly high-quality diet...
February 2017: American Journal of Preventive Medicine
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