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https://www.readbyqxmd.com/read/28431090/current-status-of-the-blue-butterfly-in-fukushima-research
#1
Joji M Otaki, Wataru Taira
Adverse biological impacts of the Fukushima nuclear accident have been revealed using the pale grass blue butterfly, Zizeeria maha, since 2012, which were often considered incompatible with the conventional understanding of radiation biology. This discrepancy likely originates from different system conditions and methodologies. In this article, we first respond to comments from the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) regarding our study; "technical errors" in unit usage and mathematical models noted by UNSCEAR are not errors but reflect our research philosophy not to introduce theoretical assumptions associated with unit conversion and mathematical fit...
April 18, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28429318/biochemistry-and-physiology-of-vitamins-in-euglena
#2
Fumio Watanabe, Kazuya Yoshimura, Shigeru Shigeoka
Euglena gracilis Z requires vitamins B1 and B12 for growth. It takes up and accumulates large amounts of these exogenous vitamins through energy-dependent active transport systems. Except for these essential vitamins, E. gracilis Z has the ability to synthesize all human vitamins. Euglena synthesizes high levels of antioxidant vitamins such as vitamins C and E, and, thus, are used as nutritional supplements for humans and domestic animals. Methods to effectively produce vitamins in Euglena have been investigated...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28427537/metabolomics-nutrition-and-potential-biomarkers-of-food-quality-intake-and-health-status
#3
Jean-Louis Sébédio
Diet, dietary patterns, and other environmental factors such as exposure to toxins are playing an important role in the prevention/development of many diseases, like obesity, type 2 diabetes, and consequently on the health status of individuals. A major challenge nowadays is to identify novel biomarkers to detect as early as possible metabolic dysfunction and to predict evolution of health status in order to refine nutritional advices to specific population groups. Omics technologies such as genomics, transcriptomics, proteomics, and metabolomics coupled with statistical and bioinformatics tools have already shown great potential in this research field even if so far only few biomarkers have been validated...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28427348/comparative-genomics-and-evolution-of-the-amylase-binding-proteins-of-oral-streptococci
#4
Elaine M Haase, Yurong Kou, Amarpreet Sabharwal, Yu-Chieh Liao, Tianying Lan, Charlotte Lindqvist, Frank A Scannapieco
BACKGROUND: Successful commensal bacteria have evolved to maintain colonization in challenging environments. The oral viridans streptococci are pioneer colonizers of dental plaque biofilm. Some of these bacteria have adapted to life in the oral cavity by binding salivary α-amylase, which hydrolyzes dietary starch, thus providing a source of nutrition. Oral streptococcal species bind α-amylase by expressing a variety of amylase-binding proteins (ABPs). Here we determine the genotypic basis of amylase binding where proteins of diverse size and function share a common phenotype...
April 20, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28404728/costs-of-immunity-and-their-role-in-the-range-expansion-of-the-house-sparrow-in-kenya
#5
Lynn B Martin, Holly J Kilvitis, Amber J Brace, Laken Cooper, Mark F Haussmann, Alex Mutati, Vincent Fasanello, Sara O'Brien, Daniel R Ardia
There are at least two reasons to study traits that mediate successful range expansions. First, dispersers will found new populations and thus impact the distribution and evolution of species. Second, organisms moving into new areas will influence the fate of resident communities, directly competing with or indirectly affecting residents by spreading non-native or spilling-back native parasites. The success of invaders in new areas is likely mediated by a counterbalancing of costly traits. In new areas where threats are comparatively rare, individuals that grow rapidly and breed prolifically should be at an advantage...
April 12, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28388875/sex-specific-differences-in-transcriptome-profiles-of-brain-and-muscle-tissue-of-the-tropical-gar
#6
Kayla M Cribbin, Corey R Quackenbush, Kyle Taylor, Lenin Arias-Rodriguez, Joanna L Kelley
BACKGROUND: The tropical gar (Atractosteus tropicus) is the southernmost species of the seven extant species of gar fishes in the world. In Mexico and Central America, the species is an important food source due to its nutritional quality and low price. Despite its regional importance and increasing concerns about overexploitation and habitat degradation, basic genetic information on the tropical gar is lacking. Determining genetic information on the tropical gar is important for the sustainable management of wild populations, implementation of best practices in aquaculture settings, evolutionary studies of ancient lineages, and an understanding of sex-specific gene expression...
April 7, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28383298/fructose-use-in-clinical-nutrition-metabolic-effects-and-potential-consequences
#7
Sandra Moulin, Gérald Seematter, Kevin Seyssel
PURPOSE OF REVIEW: The current article presents recent findings on the metabolic effects of fructose. RECENT FINDINGS: Fructose has always been considered as a simple 'caloric' hexose only metabolized by splanchnic tissues. Nevertheless, there is growing evidence that fructose acts as a second messenger and induces effects throughout the human body. SUMMARY: Recent discoveries made possible with the evolution of technology have highlighted that fructose induces pleiotropic effects on different tissues...
April 5, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28373124/gras-from-the-ground-up-review-of-the-interim-pilot-program-for-gras-notification
#8
Paul R Hanlon, Joy Frestedt, Kelly Magurany
After publication of the draft Generally Regarded As Safe (GRAS) rule in 1997, the United States (US) Food and Drug Administration (FDA) initiated an Interim Pilot Program encouraging the notification to FDA of GRAS determinations. This paper analyzes GRAS notifications submitted during the Interim Pilot Program along with warning letters issued during the same time period to better understand the evolution of the program and anticipate the future GRAS landscape. The success of the GRAS Notification program is demonstrated by the increasing rate of GRAS Notifications submitted to the FDA during the Interim Pilot Program, as well as the shift from a primarily domestic process to a process featuring an equal to greater contribution of GRAS Notifications from companies outside the US...
March 31, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28365080/the-cocos-trial-caloric-control-in-cardiac-surgery-patients-promotes-survival-an-interventional-trial-with-retrospective-control
#9
Elisabeth De Waele, Ducnam Nguyen, Karlien De Bondt, Mark La Meir, Marc Diltoer, Patrick M Honoré, Herbert Spapen, Joeri J Pen
BACKGROUND & AIMS: Malnutrition is widespread among cardiac surgery patients and is independently related to an adverse postoperative evolution or outcome. We aimed to assess whether nutrition therapy (NT) could alter caloric deficit, morbidity, and mortality in patients scheduled for non-emergency coronary artery bypass graft (CABG) or aortic valve surgery. METHODS: 351 patients undergoing either elective CABG or aortic valve surgery were studied. Patients receiving NT were enrolled from January 2013 until December 2014...
March 18, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28355492/longitudinal-bone-mineralization-assessment-in-children-treated-with-long-term-parenteral-nutrition-for-severe-intestinal-failure
#10
Pierre Poinsot, Perrine Geoffroy, Pierre Braillon, Angelique Denis, Irene Loras-Duclaux, Stéphanie Marotte, Stéphanie Boutroy, Justine Bacchetta, Sandrine Touzet, Alain Lachaux, Noel Peretti
BACKGROUND: Metabolic bone disease is common in children receiving home parenteral nutrition (HPN) for intestinal failure (IF). Long-term evolution of bone mass in pediatric IF is poorly documented. The aims of this study were (1) to determine the prevalence of low bone mass (LBM) in children receiving HPN for IF, (2) to evaluate the evolution of total bone mineral content (TBMC) during HPN with dual-energy x-ray absorptiometry (DXA), and (3) to identify related factors. METHODS: All children referred in our HPN center from 2004 to 2014 were eligible...
March 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28352118/body-composition-and-susceptibility-to-type-2-diabetes-an-evolutionary-perspective
#11
REVIEW
J C K Wells
Type 2 diabetes is rapidly increasing in prevalence worldwide, in concert with epidemics of obesity and sedentary behavior that are themselves tracking economic development. Within this broad pattern, susceptibility to diabetes varies substantially in association with ethnicity and nutritional exposures through the life-course. An evolutionary perspective may help understand why humans are so prone to this condition in modern environments, and why this risk is unequally distributed. A simple conceptual model treats diabetes risk as the function of two interacting traits, namely 'metabolic capacity' which promotes glucose homeostasis, and 'metabolic load' which challenges glucose homoeostasis...
March 29, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28338679/entomopathogenic-bacteria-use-multiple-mechanisms-for-bioactive-peptide-library-design
#12
Xiaofeng Cai, Sarah Nowak, Frank Wesche, Iris Bischoff, Marcel Kaiser, Robert Fürst, Helge B Bode
The production of natural product compound libraries has been observed in nature for different organisms such as bacteria, fungi and plants; however, little is known about the mechanisms generating such chemically diverse libraries. Here we report mechanisms leading to the biosynthesis of the chemically diverse rhabdopeptide/xenortide peptides (RXPs). They are exclusively present in entomopathogenic bacteria of the genera Photorhabdus and Xenorhabdus that live in symbiosis with nematodes delivering them to insect prey, which is killed and utilized for nutrition by both nematodes and bacteria...
April 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28338487/the-evolution-of-disease-chronic-lung-disease-of-infancy-and-pulmonary-hypertension
#13
Michael C Tracy, David N Cornfield
PURPOSE OF REVIEW: Bronchopulmonary dysplasia (BPD) or chronic lung disease of infancy BPD was originally described 50 years ago, in 1967 by Northway et al. This article possesses two fundamental objectives to provide: a brief historical perspective on BPD; and an update relative to current notions of epidemiology, pathophysiology, evaluation, and clinical management of BPD complicated by vascular disease. The review highlights areas of consensus and ongoing uncertainty. RECENT FINDINGS: The clinical cause and presentation of infants with BPD has evolved over the past several decades...
March 23, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28336178/symbiont-acquisition-and-replacement-as-a-source-of-ecological-innovation
#14
REVIEW
Sailendharan Sudakaran, Christian Kost, Martin Kaltenpoth
Nutritional symbionts play a major role in the ecology and evolution of insects. The recent accumulation of knowledge on the identity, function, genomics, and phylogenetic relationships of insect-bacteria symbioses provides the opportunity to assess the effects of symbiont acquisitions and replacements on the shift into novel ecological niches and subsequent lineage diversification. The megadiverse insect order Hemiptera presents a particularly large diversity of symbiotic associations that has frequently undergone shifts in symbiont localization and identity, which have contributed to the exploitation of nutritionally imbalanced diets such as plant saps or vertebrate blood...
March 20, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28334357/sweetener-intake-by-rats-selectively-bred-for-differential-saccharin-intake-sucralose-stevia-and-acesulfame-potassium
#15
Nancy K Dess, Kiana Dobson, Brandon T Roberts, Clinton D Chapman
Behavioral responses to sweeteners have been used to study the evolution, mechanisms, and functions of taste. Occidental low and high saccharin consuming rats (respectively, LoS and HiS) have been selectively outbred on the basis of saccharin intake and are a valuable tool for studying variation among individuals in sweetener intake and its correlates. Relative to HiS rats, LoS rats consume smaller amounts of all nutritive and nonnutritive sweeteners tested to date, except aspartame. The lines also differ in intake of the commercial product Splenda; the roles of sucralose and saccharides in the difference are unclear...
March 15, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28330581/functional-decline-in-older-patients-with-cancer-receiving-chemotherapy-a-multicenter-prospective-study
#16
Cindy Kenis, Lore Decoster, Julie Bastin, Hannelore Bode, Katrien Van Puyvelde, Jacques De Grève, Godelieve Conings, Katleen Fagard, Johan Flamaing, Koen Milisen, Jean-Pierre Lobelle, Hans Wildiers
OBJECTIVES: This study aims to evaluate the evolution of functional status (FS) 2 to 3months after initiation of chemotherapy, to identify factors associated with functional decline during chemotherapy treatment and to investigate the prognostic value of functional decline for overall survival (OS). PATIENTS AND METHODS: Patients ≥70years with a malignant tumor were included when chemotherapy was initiated. All patients underwent a geriatric assessment (GA) including FS measured by Activities of Daily Living (ADL) and Instrumental Activities of Daily Living (IADL)...
March 15, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28319048/amino-acid-insensitive-mtorc1-regulation-enables-nutritional-stress-resilience-in-hematopoietic-stem-cells
#17
Demetrios Kalaitzidis, Dongjun Lee, Alejo Efeyan, Youmna Kfoury, Naema Nayyar, David B Sykes, Francois E Mercier, Ani Papazian, Ninib Baryawno, Gabriel D Victora, Donna Neuberg, David M Sabatini, David T Scadden
The mTOR pathway is a critical determinant of cell persistence and growth wherein mTOR complex 1 (mTORC1) mediates a balance between growth factor stimuli and nutrient availability. Amino acids or glucose facilitates mTORC1 activation by inducing RagA GTPase recruitment of mTORC1 to the lysosomal outer surface, enabling activation of mTOR by the Ras homolog Rheb. Thereby, RagA alters mTORC1-driven growth in times of nutrient abundance or scarcity. Here, we have evaluated differential nutrient-sensing dependence through RagA and mTORC1 in hematopoietic progenitors, which dynamically drive mature cell production, and hematopoietic stem cells (HSC), which provide a quiescent cellular reserve...
April 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28306140/dietary-and-nutritional-change-in-india-implications-for-strategies-policies-and-interventions
#18
Bhavani Shankar, Sutapa Agrawal, Amy R Beaudreault, Laxmaiah Avula, Reynaldo Martorell, Saskia Osendarp, Dorairaj Prabhakaran, Mireille Seneclauze Mclean
Despite the global transition to overnutrition, stunting affected approximately 159 million children worldwide in 2014, while an estimated 50 million children were wasted. India is an important front in the fight against malnutrition and is grappling with the coexistence of undernutrition, overnutrition, and micronutrient deficiencies. This report summarizes discussions on trends in malnutrition in India, its evolution in the context of economic growth, intrahousehold aspects, infant and young child feeding practices, women's status, maternal nutrition, and nutrition policymaking...
March 17, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28298351/community-analysis-of-microbial-sharing-and-specialization-in-a-costa-rican-ant-plant-hemipteran-symbiosis
#19
Elizabeth G Pringle, Corrie S Moreau
Ants have long been renowned for their intimate mutualisms with trophobionts and plants and more recently appreciated for their widespread and diverse interactions with microbes. An open question in symbiosis research is the extent to which environmental influence, including the exchange of microbes between interacting macroorganisms, affects the composition and function of symbiotic microbial communities. Here we approached this question by investigating symbiosis within symbiosis. Ant-plant-hemipteran symbioses are hallmarks of tropical ecosystems that produce persistent close contact among the macroorganism partners, which then have substantial opportunity to exchange symbiotic microbes...
March 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28285245/a-disconnection-between-nutritional-status-in-terms-of-body-mass-index-and-phase-angle-and-psychopathology-in-anorexia-nervosa
#20
Fortunato Federico, Demartini Benedetta, Maffoni Claudia, Apicella Emanuela, Leonardi Valentina, Mendolicchio Leonardo
The aim of our study was to investigate the relationship between nutritional status (body mass index and phase angle) and psychological symptoms at admission and discharge in a residential population of anorexic patients. We also aimed to determine the evolution of the above psychological symptoms and nutrition rehabilitation from admission to discharge. Thirty-six consecutive patients were included. The evaluation was performed using the following measures at admission and discharge: body mass index, phase angle, Eating Disorders Inventory-3, Multiphasic Personality Inventory-2 and Body Uneasiness...
February 20, 2017: Psychiatry Research
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