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Nutrition physiology

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https://www.readbyqxmd.com/read/28534062/insights-into-the-prevalence-and-underlying-causes-of-clonal-variation-through-transcriptomic-analysis-in-pichia-pastoris
#1
Rochelle Aw, Geraint R Barton, David J Leak
Clonal variation, wherein a range of specific productivities of secreted proteins are observed from supposedly identical transformants, is an accepted aspect of working with Pichia pastoris. It means that a significant number of transformants need to be tested to obtain a representative sample, and in commercial protein production, companies regularly screen thousands of transformants to select for the highest secretor. Here, we have undertaken a detailed investigation of this phenomenon by characterising clones transformed with the human serum albumin gene...
May 22, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28533960/body-composition-estimation-from-selected-slices-equations-computed-from-a-new-semi-automatic-thresholding-method-developed-on-whole-body-ct%C3%A2-scans
#2
Alizé Lacoste Jeanson, Ján Dupej, Chiara Villa, Jaroslav Brůžek
BACKGROUND: Estimating volumes and masses of total body components is important for the study and treatment monitoring of nutrition and nutrition-related disorders, cancer, joint replacement, energy-expenditure and exercise physiology. While several equations have been offered for estimating total body components from MRI slices, no reliable and tested method exists for CT scans. For the first time, body composition data was derived from 41 high-resolution whole-body CT scans. From these data, we defined equations for estimating volumes and masses of total body AT and LT from corresponding tissue areas measured in selected CT scan slices...
2017: PeerJ
https://www.readbyqxmd.com/read/28533176/the-mouse-thermoregulatory-system-its-impact-on-translating-biomedical-data-to-humans
#3
REVIEW
Christopher J Gordon
The laboratory mouse has become the predominant test species in biomedical research. The number of papers that translate or extrapolate data from mouse to human has grown exponentially since the year 2000. There are many physiological and anatomical factors to consider in the process of extrapolating data from one species to another. Body temperature is, of course, a critical determinant in extrapolation because it has a direct impact on metabolism, cardiovascular function, drug efficacy, pharmacokinetics of toxins and drugs, and many other effects...
May 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28531643/lipid-based-nutrient-supplements-containing-vitamins-and-minerals-attenuate-renal-electrolyte-loss-in-hiv-aids-patients-starting-antiretroviral-therapy-a-randomized-controlled-trial-in-zambia
#4
D Munkombwe, T L Muungo, C Michelo, P Kelly, S Chirwa, S Filteau
BACKGROUND & AIMS: Advanced HIV infection combined with undernutrition and antiretroviral therapy (ART) places HIV/AIDS patients at high risk of electrolyte abnormalities and increased morbidity and mortality. Here, in a sub-study of a large published randomized trial, we evaluated if nutritional supplements will help curtail renal electrolyte loss in HIV/AIDS patients starting ART. METHODS: 130 malnourished HIV-positive patients referred for ART received lipid-based nutrient supplements alone (LNS, n = 63) or together with vitamins and minerals (LNS-VM, n = 67)...
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28530485/energy-requirement-assessment-in-japanese-table-tennis-players-using-the-doubly-labeled-water-method
#5
Hiroyuki Sagayama, Genki Hamaguchi, Makiko Toguchi, Mamiko Ichikawa, Yosuke Yamada, Naoyuki Ebine, Yasuki Higaki, Hiroaki Tanaka
Total daily energy expenditure (TEE) and physical activity level (PAL) are important for adequate nutritional management in athletes. The PAL of table tennis has been estimated to about 2.0: it is categorized as a moderate-activity sport (4.0 metabolic equivalents [METs]) in the Compendium of Physical Activities. However, modern table tennis makes high physiological demands. The aims of the present study were to examine (1) TEE and PAL of competitive table tennis players and (2) the physiological demands of various types of table tennis practice...
May 22, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28528990/proteomics-survey-of-solanaceae-family-current-status-and-challenges-ahead
#6
Arindam Ghatak, Palak Chaturvedi, Puneet Paul, Ganesh Kumar Agrawal, Randeep Rakwal, Sun Tae Kim, Wolfram Weckwerth, Ravi Gupta
Solanaceae is one of the major economically important families of higher plants and has played a central role in human nutrition since the dawn of human civilization. Therefore, researchers have always been interested in understanding the complex behavior of Solanaceae members to identify key transcripts, proteins or metabolites, which are potentially associated with major traits. Proteomics studies have contributed significantly to understanding the physiology of Solanaceae members. A compilation of all the published reports showed that both gel-based (75%) and gel-free (25%) proteomic technologies have been utilized to establish the proteomes of different tissues, organs, and organelles under normal and adverse environmental conditions...
May 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28528647/transition-metal-homeostasis-in-streptococcus-pyogenes-and-streptococcus-pneumoniae
#7
Andrew G Turner, Cheryl-Lynn Y Ong, Mark J Walker, Karrera Y Djoko, Alastair G McEwan
Trace metals such as Fe, Mn, Zn and Cu are essential for various biological functions including proper innate immune function. The host immune system has complicated and coordinated mechanisms in place to either starve and/or overload invading pathogens with various metals to combat the infection. Here, we discuss the roles of Fe, Mn and Zn in terms of nutritional immunity, and also the roles of Cu and Zn in metal overload in relation to the physiology and pathogenesis of two human streptococcal species, Streptococcus pneumoniae and Streptococcus pyogenes...
2017: Advances in Microbial Physiology
https://www.readbyqxmd.com/read/28525995/do-socio-cultural-factors-influence-college-students-self-rated-health-status-and-health-promoting-lifestyles-a-cross-sectional-multicenter-study-in-dalian-china
#8
Sainyugu Lolokote, Tesfaldet Habtemariam Hidru, Xiaofeng Li
BACKGROUND: An unhealthy lifestyle of college students is an important public health concern, but few studies have been undertaken to examine the role of socio-cultural differences. METHODS: For this cross-sectional comparative study, data on college students' health-promoting lifestyles (HPL), as measured using the Health-Promoting Lifestyle Profile (HPLP-II) scale, and self-rated health status (SRH) as measured by Sub-Optimal Health Measurement Scale (SHMS V1...
May 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28525595/gut-transcriptome-analysis-shows-different-food-utilization-efficiency-by-the-grasshopper-oedaleous-asiaticus-orthoptera-acrididae
#9
Xunbing Huang, Mark Richard McNeill, Jingchuan Ma, Xinghu Qin, Xiongbing Tu, Guangchun Cao, Guangjun Wang, Xiangqun Nong, Zehua Zhang
Oedaleus asiaticus B. Bienko is a persistent pest occurring in north Asian grasslands. We found that O. asiaticus feeding on Stipa krylovii Roshev. had higher approximate digestibility (AD), efficiency of conversion of ingested food (ECI), and efficiency of conversion of digested food (ECD), compared with cohorts feeding on Leymus chinensis (Trin.) Tzvel, Artemisia frigida Willd., or Cleistogenes squarrosa (Trin.) Keng. Although this indicated high food utilization efficiency for S. krylovii, the physiological processes and molecular mechanisms underlying these biological observations are not well understood...
May 19, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28524870/autotrophic-and-heterotrophic-acquisition-of-carbon-and-nitrogen-by-a-mixotrophic-chrysophyte-established-through-stable-isotope-analysis
#10
Ramon Terrado, Alexis L Pasulka, Alle A-Y Lie, Victoria J Orphan, Karla B Heidelberg, David A Caron
Collectively, phagotrophic algae (mixotrophs) form a functional continuum of nutritional modes between autotrophy and heterotrophy, but the specific physiological benefits of mixotrophic nutrition differ among taxa. Ochromonas spp. are ubiquitous chrysophytes that exhibit high nutritional flexibility, although most species generally fall towards the heterotrophic end of the mixotrophy spectrum. We assessed the sources of carbon and nitrogen in Ochromonas sp. strain BG-1 growing mixotrophically via short-term stable isotope probing...
May 19, 2017: ISME Journal
https://www.readbyqxmd.com/read/28524103/potential-impact-of-nutrition-on-immune-system-recovery-from-heavy-exertion-a-metabolomics-perspective
#11
REVIEW
David C Nieman, Susan Hazels Mitmesser
This review describes effective and ineffective immunonutrition support strategies for the athlete, with a focus on the benefits of carbohydrates and polyphenols as determined from metabolomics-based procedures. Athletes experience regular cycles of physiological stress accompanied by transient inflammation, oxidative stress, and immune perturbations, and there are increasing data indicating that these are sensitive to nutritional influences. The most effective nutritional countermeasures, especially when considered from a metabolomics perspective, include acute and chronic increases in dietary carbohydrate and polyphenols...
May 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28522417/physiological-responses-of-insects-to-microbial-fermentation-products-insights-from-the-interactions-between-drosophila-and-acetic-acid
#12
Geonho Kim, Jia Hsin Huang, John G McMullen, Peter D Newell, Angela E Douglas
Acetic acid is a fermentation product of many microorganisms, including some that inhabit the food and guts of Drosophila. Here, we investigated the effect of dietary acetic acid on oviposition and larval performance of Drosophila. At all concentrations tested (0.34-3.4%), acetic acid promoted egg deposition by mated females in no-choice assays; and females preferred to oviposit on diet with acetic acid relative to acetic acid-free diet. However, acetic acid depressed larval performance, particularly extending the development time of both larvae colonized with the bacterium Acetobacter pomorum and axenic (microbe-free) larvae...
May 15, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28520779/church-attendance-allostatic-load-and-mortality-in-middle-aged-adults
#13
Marino A Bruce, David Martins, Kenrik Duru, Bettina M Beech, Mario Sims, Nina Harawa, Roberto Vargas, Dulcie Kermah, Susanne B Nicholas, Arleen Brown, Keith C Norris
IMPORTANCE: Religiosity has been associated with positive health outcomes. Hypothesized pathways for this association include religious practices, such as church attendance, that result in reduced stress. OBJECTIVE: The objective of this study was to examine the relationship between religiosity (church attendance), allostatic load (AL) (a physiologic measure of stress) and all-cause mortality in middle-aged adults. DESIGN, SETTING AND PARTICIPANTS: Data for this study are from NHANES III (1988-1994)...
2017: PloS One
https://www.readbyqxmd.com/read/28511080/cadmium-and-alzheimer-s-disease-mortality-in-u-s-adults-updated-evidence-with-a-urinary-biomarker-and-extended-follow-up-time
#14
Qing Peng, Kelly M Bakulski, Bin Nan, Sung Kyun Park
Cadmium has been linked to impaired cognitive function in adults and may cause behavioral, physiological and molecular abnormalities characteristic of Alzheimer's disease (AD) in animals. Evidence linking cadmium and AD in humans is limited, but supportive. In the most recent epidemiologic study, blood cadmium in U.S. adults was positively associated with elevated AD mortality 7-13 years later. The association between urinary cadmium - an arguably more appropriate biomarker for studying chronic diseases - and AD mortality has not yet been explored...
May 13, 2017: Environmental Research
https://www.readbyqxmd.com/read/28510190/chilling-susceptibility-in-mungbean-varieties-is-associated-with-their-differentially-expressed-genes
#15
Li-Ru Chen, Chia-Yun Ko, William R Folk, Tsai-Yun Lin
BACKGROUND: Mungbean (Vigna radiata L. Wilczek) is an economically important legume of high nutritional value, however, its cultivation is limited by susceptibility to chilling. Varieties NM94 and VC1973A, with differential susceptibility to stress, serve as good materials for uncovering how they differ in chilling tolerance. This study aimed to identify the ultrastructural, physiological and molecular changes to provide new insights on the differential susceptibility to chilling between varieties VC1973A and NM94...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28507168/nutritional-interventions-and-the-il-6-response-to-exercise
#16
REVIEW
Stephen R Hennigar, James P McClung, Stefan M Pasiakos
IL-6 is a pleiotropic cytokine with a wide range of biologic effects. In response to prolonged exercise, IL-6 is synthesized by contracting skeletal muscle and released into circulation. Circulating IL-6 is thought to maintain energy status during exercise by acting as an energy sensor for contracting muscle and stimulating glucose production. If tissue damage occurs, immune cells infiltrate and secrete cytokines, including IL-6, to repair skeletal muscle damage. With adequate rest and nutrition, the IL-6 response to exercise is attenuated as skeletal muscle adapts to training...
May 15, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28506328/the-effect-of-dietary-faba-bean-and-non-starch-polysaccharide-degrading-enzymes-on-the-growth-performance-and-gut-physiology-of-young-turkeys
#17
D Mikulski, J Juskiewicz, B Przybylska-Gornowicz, E Sosnowska, B A Slominski, J Jankowski, Z Zdunczyk
The aim of this study was to investigate the effect of dietary replacement of soya bean meal (SBM) with faba bean (FB) and a blend of non-starch polysaccharide (NSP) degrading enzymes on the gastrointestinal function, growth performance and welfare of young turkeys (1 to 56 days of age). An experiment with a 2×2 factorial design was performed to compare the efficacy of four diets: a SBM-based diet and a diet containing FB, with and without enzyme supplementation (C, FB, CE and FBE, respectively). In comparison with groups C, higher dry matter content and lower viscosity of the small intestinal digesta were noted in groups FB...
May 16, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28504920/silicon-s-role-in-abiotic-and-biotic-plant-stresses
#18
Daniel Debona, Fabrício A Rodrigues, Lawrence E Datnoff
Silicon (Si) plays a pivotal role in the nutritional status of a wide variety of monocot and dicot plant species and helps them, whether direct or indirectly, counteract abiotic and/or biotic stresses. In general, plants with a high root or shoot Si concentration are less prone to suffer from pest attack and exhibit enhanced tolerance to abiotic stresses such as drought, low temperature, or metal toxicity. However, the most notable effect of Si is the reduction in the intensities of a number of seedborne, soilborne, and foliar diseases in many economically important crops that are caused by biotrophic, hemibiotrophic, and necrotrophic plant pathogens...
May 15, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28502819/functional-relevance-of-mirnas-in-premature-ageing
#19
REVIEW
Xurde M Caravia, David Roiz-Valle, Alba Morán-Álvarez, Carlos López-Otín
Ageing is a complex biological process characterized by the progressive loss of biological fitness due to the accumulation of macromolecular and cellular damage that affects most living organisms. Moreover, ageing is an important risk factor for many pathologies, including cardiovascular diseases, neurological disorders, and cancer. However, the ageing rate can be modulated by genetic, nutritional, and pharmacological factors, highlighting the concept of "ageing plasticity". Progeroid syndromes are a group of rare genetic diseases that resemble many characteristics of physiological ageing...
May 11, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28501922/sepp1-polymorphisms-modulate-serum-glucose-and-lipid-response-to-brazil-nut-supplementation
#20
Janaina L S Donadio, Marcelo M Rogero, Elvira M Guerra-Shinohara, Charles Desmarchelier, Patrick Borel, Silvia M F Cozzolino
PURPOSE: The consumption of Brazil nuts has been associated with benefits to lipid metabolism and reductions in total cholesterol and LDL concentrations. They are the richest natural source of selenium which has essential functions in human physiology. Genetic polymorphisms in Selenoprotein P could impair lipid and glucose metabolisms. The aim of this work was to verify the influence of polymorphisms in genes for selenoproteins on blood lipid levels after dietary supplementation with Brazil nuts in healthy adults...
May 13, 2017: European Journal of Nutrition
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