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https://www.readbyqxmd.com/read/28605402/sparse-redundancy-analysis-of-high-dimensional-genetic-and-genomic-data
#1
Attila Csala, Frans P J M Voorbraak, Aeilko H Zwinderman, Michel H Hof
Motivation: Recent technological developments have enabled the possibility of genetic and genomic integrated data analysis approaches, where multiple omics data sets from various biological levels are combined and used to describe (disease) phenotypic variations. The main goal is to explain and ultimately predict phenotypic variations by understanding their genetic basis and the interaction of the associated genetic factors. Therefore, understanding the underlying geneticmechanisms of phenotypic variations is an ever increasing research interest in biomedical sciences...
June 12, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28601663/temporal-patterns-of-phyto-and-bacterioplankton-and-their-relationships-with-environmental-factors-in-lake-taihu-china
#2
Xiaomei Su, Alan D Steinman, Qingju Xue, Yanyan Zhao, Xiangming Tang, Liqiang Xie
Phytoplankton and bacterioplankton are integral components of aquatic food webs and play essential roles in the structure and function of freshwater ecosystems. However, little is known about how phyto- and bacterioplankton may respond synchronously to changing environmental conditions. Thus, we analyzed simultaneously the composition and structure of phyto- and bacterioplankton on a monthly basis over 12 months in cyanobacteria-dominated areas of Lake Taihu and compared their responses to changes in environmental factors...
June 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28601010/heavy-metal-fractions-and-ecological-risk-assessment-in-sediments-from-urban-rural-and-reclamation-affected-rivers-of-the-pearl-river-estuary-china
#3
Guangliang Zhang, Junhong Bai, Rong Xiao, Qingqing Zhao, Jia Jia, Baoshan Cui, Xinhui Liu
Rapid urbanization and reclamation processes in coastal areas have resulted in serious pollution to the aquatic environment. Less is known on the geochemical fractions and ecological risks in river sediment under various human activities pressures, which is essential for addressing the connections between heavy metal pollution and anthropogenic influences. River sediments were collected from different landscapes (i.e., urban, rural and reclamation areas) to investigate the impacts of urbanization and reclamation on the metallic pollution levels and ecological risks in the Pear River Estuary of China...
May 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28596735/diet-composition-and-variability-of-wild-octopus-vulgaris-and-alloteuthis-media-cephalopoda-paralarvae-a-metagenomic-approach
#4
Lorena Olmos-Pérez, Álvaro Roura, Graham J Pierce, Stéphane Boyer, Ángel F González
The high mortality of cephalopod early stages is the main bottleneck to grow them from paralarvae to adults in culture conditions, probably because the inadequacy of the diet that results in malnutrition. Since visual analysis of digestive tract contents of paralarvae provides little evidence of diet composition, the use of molecular tools, particularly next generation sequencing (NGS) platforms, offers an alternative to understand prey preferences and nutrient requirements of wild paralarvae. In this work, we aimed to determine the diet of paralarvae of the loliginid squid Alloteuthis media and to enhance the knowledge of the diet of recently hatched Octopus vulgaris paralarvae collected in different areas and seasons in an upwelling area (NW Spain)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28582972/the-impact-of-do-and-salinity-on-microbial-community-in-poly-butylene-succinate-denitrification-reactors-for-recirculating-aquaculture-system-wastewater-treatment
#5
Ya-Le Deng, Yun-Jie Ruan, Song-Ming Zhu, Xi-Shan Guo, Zhi-Ying Han, Zhang-Ying Ye, Gang Liu, Ming-Ming Shi
The interactions between environmental factors and bacterial community shift in solid-phase denitrification are crucial for optimum operation of a reactor and to achieve maximum treatment efficiency. In this study, Illumina high-throughput sequencing was applied to reveal the effects of different operational conditions on bacterial community distribution of three continuous operated poly(butylene succinate) biological denitrification reactors used for recirculating aquaculture system (RAS) wastewater treatment...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28534725/vitamin-d-deficiency-and-sufficiency-among-canadian-children-residing-at-high-latitude-following-the-revision-of-the-rda-of-vitamin-d-intake-in-2010-corrigendum
#6
Lalani L Munasinghe, Yan Yuan, Noreen D Willows, Erin L Faught, John P Ekwaru, Paul J Veugelers
No abstract text is available yet for this article.
April 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28534027/current-concepts-and-unresolved-questions-in-dietary-protein-requirements-and-supplements-in-adults
#7
REVIEW
Stuart M Phillips
Protein needs for otherwise healthy individuals older than 19 years are defined by the recommended dietary allowance (RDA) at 0.80 g protein/kg/day. There is no recommendation in the current RDA for subpopulations of older adults or people in various pathological situations. Despite the lack of a separate recommendation, there exists a growing body of evidence that is strongly suggestive of an increased need and/or benefit for protein in older persons. That is, intakes beyond the RDA are, in older persons, associated with benefits...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28531947/shifts-in-the-relative-abundance-of-bacteria-after-wine-lees-derived-biochar-intervention-in-multi-metal-contaminated-paddy-soil
#8
Min Xu, Hongxia Xia, Jun Wu, Gang Yang, Xiaohong Zhang, Hong Peng, Xiaoyu Yu, Li Li, Hong Xiao, Hui Qi
The impact of biochar application on soil ecological functions depends on the diversity of soil conditions and of the feedstocks from which biochar is obtained. Moreover, little information is available on the effect of biochar on dynamic changes in microorganisms with the development of rice plants in multi-metal-contaminated paddy soil amended with wine-lees-derived biochar. In this paper, biochar obtained from the pyrolysis of wine lees at 600°C was used to investigate the potential role of biochar in maintaining soil ecological functions, with consideration of the alteration of the microbial population over periods of rice growth...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28483498/design-of-a-randomized-trial-to-determine-the-optimum-protein-intake-to-preserve-lean-body-mass-and-to-optimize-response-to-a-promyogenic-anabolic-agent-in-older-men-with-physical-functional-limitation
#9
Shalender Bhasin, Caroline M Apovian, Thomas G Travison, Karol Pencina, Grace Huang, Lynn L Moore, Wayne W Campbell, Andrew Howland, Ruo Chen, Martha R Singer, Mitali Shah, Richard Eder, Haley Schram, Richelle Bearup, Yusnie M Beleva, Ashley C McCarthy, Zhouying Li, Erin Woodbury, Jennifer McKinnon, Thomas W Storer, Shehzad Basaria
The dietary protein allowance for older men to maintain lean body mass and muscle strength and to accrue optimal anabolic responses to promyogenic stimuli is poorly characterized. The OPTIMEN trial was designed to assess in older men with moderate physical dysfunction and insufficient habitual protein intake (<recommended dietary allowance, RDA, 0.8g·kg(-1)·d(-1)) the efficacy of consuming diets containing 163% RDA (1.3g·kg(-1)·d(-1)) for protein, compared to RDA, to increase lean mass, muscle performance, and physical function...
July 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28481906/the-underlying-processes-of-a-soil-mite-metacommunity-on-a-small-scale
#10
Chengxu Dong, Meixiang Gao, Chuanwei Guo, Lin Lin, Donghui Wu, Limin Zhang
Metacommunity theory provides an understanding of how ecological processes regulate local community assemblies. However, few field studies have evaluated the underlying mechanisms of a metacommunity on a small scale through revealing the relative roles of spatial and environmental filtering in structuring local community composition. Based on a spatially explicit sampling design in 2012 and 2013, this study aims to evaluate the underlying processes of a soil mite metacommunity on a small spatial scale (50 m) in a temperate deciduous forest located at the Maoershan Ecosystem Research Station, Northeast China...
2017: PloS One
https://www.readbyqxmd.com/read/28480001/nematode-distributions-as-spatial-null-models-for-macroinvertebrate-species-richness-across-environmental-gradients-a-case-from-mountain-lakes
#11
Guillermo de Mendoza, Walter Traunspurger, Alejandro Palomo, Jordi Catalan
Nematode species are widely tolerant of environmental conditions and disperse passively. Therefore, the species richness distribution in this group might largely depend on the topological distribution of the habitats and main aerial and aquatic dispersal pathways connecting them. If so, the nematode species richness distributions may serve as null models for evaluating that of other groups more affected by environmental gradients. We investigated this hypothesis in lakes across an altitudinal gradient in the Pyrenees...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28443785/acute-and-long-term-impact-of-high-protein-diets-on-endocrine-and-metabolic-function-body-composition-and-exercise-induced-adaptations
#12
Flor E Morales, Grant M Tinsley, Paul M Gordon
BACKGROUND: High-protein diets have been shown to improve body composition through alterations in satiety, muscle protein synthesis, and the thermic effect of food. AIM: Given these findings, the purpose of this review is to discuss the integration of the specific hormonal and metabolic effects of high-protein diets following both acute and long-term usage, especially with regard to body composition. METHODS: Full-text articles were obtained through PubMed by using the terms "high-protein diet and body composition," "high-protein diet and exercise," "high-protein diet risk," "high-protein diet side effects," "protein quality PDCAAS," "RDA for protein," and "daily protein recommendation...
May 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28439265/bacterial-and-fungal-community-structures-in-loess-plateau-grasslands-with-different-grazing-intensities
#13
Huhe, Xianjiang Chen, Fujiang Hou, Yanpei Wu, Yunxiang Cheng
The Loess Plateau of China is one of the most fragile ecosystems worldwide; thus, human production activities need to be conducted very cautiously. In this study, MiSeq high-throughput sequencing was applied to assess the relationship between bacterial and fungal community structures and changes in vegetation and soil physical and chemical properties induced by grazing, in four grasslands with different levels of grazing intensity (0, 2.67, 5.33, and 8.67 sheep/ha) in the semiarid region of the Loess Plateau...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28433916/a-novel-method-for-contributing-to-composting-start-up-at-low-temperature-by-inoculating-cold-adapted-microbial-consortium
#14
Xin-Yu Xie, Yue Zhao, Qing-Hong Sun, Xue-Qin Wang, Hong-Yang Cui, Xu Zhang, Yan-Jie Li, Zi-Min Wei
Low temperature climate presented a technical challenge to start-up composting in northern region of China. This study investigated if the cold-adapted microbial consortium (CAMC) could promote composting start-up at low temperature. In this work, the CAMC was inoculated when food waste was composted at 10°C. The results showed that inoculating CAMC accelerated the piles temperature effectively, the piles passed through the start-up period within 37h. Moreover, the inoculants could enhance the abundances of dominant strains related to organic matters degradation rate...
August 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28421792/micronutrient-supplementation-in-gastric-bypass-surgery-prospective-study-on-in%C3%AF-ammation-and-iron-metabolism-in-premenopausal-women
#15
Flávia Andréia Marin, Rozangela Verlengia, Alex Harley Crisp, Patrícia Fátima Sousa Novais, Irineu Rasera-Junior, Maria Rita Marques De Oliveira
BACKGROUND: Low-grade chronic inflammation in morbid obesity is associated with impaired iron metabolism. Bariatric surgery is effective in weight loss; however, it can induce specific nutritional deficiencies, such as iron, especially in premenopausal women. Alternatively, after surgery, there is an improvement in systemic inflammation, raising questions concerning the dosages of micronutrient supplementation. OBJECTIVES: This study aimed to assess the effect of two micronutrient supplementation schemes before and 6 months after a Roux-en-Y gastric bypass (RYGB) surgery on inflammation and iron metabolism in premenopausal women...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28419163/response-of-microbial-community-of-organic-matter-impoverished-arable-soil-to-long-term-application-of-soil-conditioner-derived-from-dynamic-rapid-fermentation-of-food-waste
#16
Jiaqi Hou, Mingxiao Li, Xuhui Mao, Yan Hao, Jie Ding, Dongming Liu, Beidou Xi, Hongliang Liu
Rapid fermentation of food waste can be used to prepare soil conditioner. This process consumes less time and is more cost-effective than traditional preparation technology. However, the succession of the soil microbial community structure after long-term application of rapid fermentation-derived soil conditioners remains unclear. Herein, dynamic rapid fermentation (DRF) of food waste was performed to develop a soil conditioner and the successions and diversity of bacterial communities in an organic-matter-impoverished arable soil after six years of application of DRF-derived soil conditioner were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28414553/gd-rda-a-new-regularized-discriminant-analysis-for-high-dimensional-data
#17
Yan Zhou, Baoxue Zhang, Gaorong Li, Tiejun Tong, Xiang Wan
High-throughput techniques bring novel tools and also statistical challenges to genomic research. Identification of which type of diseases a new patient belongs to has been recognized as an important problem. For high-dimensional small sample size data, the classical discriminant methods suffer from the singularity problem and are, therefore, no longer applicable in practice. In this article, we propose a geometric diagonalization method for the regularized discriminant analysis. We then consider a bias correction to further improve the proposed method...
April 17, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28406463/synthesis-of-pyrrolo-1-2-a-pyrimidine-enantiomers-via-domino-ring-closure-followed-by-retro-diels-alder-protocol
#18
Beáta Fekete, Márta Palkó, Matti Haukka, Ferenc Fülöp
From 2-aminonorbornene hydroxamic acids, a simple and efficient method for the preparation of pyrrolo[1,2-a]pyrimidine enantiomers is reported. The synthesis is based on domino ring-closure followed by microwave-induced retro Diels-Alder (RDA) protocols, where the chirality of the desired products is transferred from norbornene derivatives. The stereochemistry of the synthesized compounds was proven by X-ray crystallography. The absolute configuration of the product is determined by the configuration of the starting amino hydroxamic acid...
April 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28401322/biomass-and-nutrient-allocation-strategies-in-a-desert-ecosystem-in-the-hexi-corridor-northwest-china
#19
Ke Zhang, YongZhong Su, Rong Yang
The allocation of biomass and nutrients in plants is a crucial factor in understanding the process of plant structures and dynamics to different environmental conditions. In this study, we present a comprehensive scaling analysis of data from a desert ecosystem to determine biomass and nutrient (carbon (C), nitrogen (N), and phosphorus (P)) allocation strategies of desert plants from 40 sites in the Hexi Corridor. We found that the biomass and levels of C, N, and P storage were higher in shoots than in roots...
July 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28397124/assessing-ultraphytoplankton-and-heterotrophic-prokaryote-composition-by-flow-cytometry-in-a-mediterranean-lagoon
#20
Amel Dhib, Michel Denis, Boutheina Ziadi, Aude Barani, Souad Turki, Lotfi Aleya
In the eutrophic Ghar El Melh Lagoon (GML, Tunisia), the distribution of heterotrophic prokaryotes, pico- and nanophytoplankton was studied at five stations in November 2012 at the single cell level, along with environmental factors. Flow cytometry analysis of ultraplankton (<10 μm) resolved (i) two heterotrophic prokaryote groups, low and high nucleic acid contents (LNA and HNA, respectively), and (ii) eight to nine ultraphytoplankton groups (cryptophyte-like cells, two nanoeukaryote subgroups, two picoeukaryote subgroups and three Synechococcus-like cells subgroups)...
May 2017: Environmental Science and Pollution Research International
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