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molecular nutrition

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https://www.readbyqxmd.com/read/28812732/genome-of-the-pitcher-plant-cephalotus-reveals-genetic-changes-associated-with-carnivory
#1
Kenji Fukushima, Xiaodong Fang, David Alvarez-Ponce, Huimin Cai, Lorenzo Carretero-Paulet, Cui Chen, Tien-Hao Chang, Kimberly M Farr, Tomomichi Fujita, Yuji Hiwatashi, Yoshikazu Hoshi, Takamasa Imai, Masahiro Kasahara, Pablo Librado, Likai Mao, Hitoshi Mori, Tomoaki Nishiyama, Masafumi Nozawa, Gergő Pálfalvi, Stephen T Pollard, Julio Rozas, Alejandro Sánchez-Gracia, David Sankoff, Tomoko F Shibata, Shuji Shigenobu, Naomi Sumikawa, Taketoshi Uzawa, Meiying Xie, Chunfang Zheng, David D Pollock, Victor A Albert, Shuaicheng Li, Mitsuyasu Hasebe
Carnivorous plants exploit animals as a nutritional source and have inspired long-standing questions about the origin and evolution of carnivory-related traits. To investigate the molecular bases of carnivory, we sequenced the genome of the heterophyllous pitcher plant Cephalotus follicularis, in which we succeeded in regulating the developmental switch between carnivorous and non-carnivorous leaves. Transcriptome comparison of the two leaf types and gene repertoire analysis identified genetic changes associated with prey attraction, capture, digestion and nutrient absorption...
February 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28811753/characterization-of-the-rosellinia-necatrix-transcriptome-and-genes-related-to-pathogenesis-by-single-molecule-mrna-sequencing
#2
Hyeongmin Kim, Seung Jae Lee, Ick-Hyun Jo, Jinsu Lee, Wonsil Bae, Hyemin Kim, Kyungho Won, Tae Kyung Hyun, Hojin Ryu
White root rot disease, caused by the pathogen Rosellinia necatrix, is one of the world's most devastating plant fungal diseases and affects several commercially important species of fruit trees and crops. Recent global outbreaks of R. necatrix and advances in molecular techniques have both increased interest in this pathogen. However, the lack of information regarding the genomic structure and transcriptome of R. necatrix has been a barrier to the progress of functional genomic research and the control of this harmful pathogen...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811369/obesity-associated-gene-tmem18-has-a-role-in-the-central-control-of-appetite-and-body-weight-regulation
#3
Rachel Larder, M F Michelle Sim, Pawan Gulati, Robin Antrobus, Y C Loraine Tung, Debra Rimmington, Eduard Ayuso, Joseph Polex-Wolf, Brian Y H Lam, Cristina Dias, Darren W Logan, Sam Virtue, Fatima Bosch, Giles S H Yeo, Vladimir Saudek, Stephen O'Rahilly, Anthony P Coll
An intergenic region of human chromosome 2 (2p25.3) harbors genetic variants which are among those most strongly and reproducibly associated with obesity. The gene closest to these variants is TMEM18, although the molecular mechanisms mediating these effects remain entirely unknown. Tmem18 expression in the murine hypothalamic paraventricular nucleus (PVN) was altered by changes in nutritional state. Germline loss of Tmem18 in mice resulted in increased body weight, which was exacerbated by high fat diet and driven by increased food intake...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28811265/molecular-cloning-heterologous-expression-and-functional-characterization-of-gamma-tocopherol-methyl-transferase-%C3%AE-tmt-from-glycine-max
#4
Kalpana Tewari, Anil Dahuja, Archana Sachdev, Kishwar Ali, Vaibhav Kumar, Amresh Kumar, Sweta Kumari
γ-Tocopherol methyltransferase (γ-TMT) (EC 2.1.1.95) is the last enzyme in the tocopherol biosynthetic pathway and it catalyzes the conversion of γ-tocopherol into α-tocopherol, the nutritionally significant and most bioactive form of vitamin E. Although the γ-TMT gene has been successfully overexpressed in many crops to enhance their α-tocopherol content but still only few attempts have been made to uncover its structural, functional and regulation aspects at protein level. In this study, we have cloned the complete 909bp coding sequence of Glycine max γ-TMT (Gm γ-TMT) gene that encodes the corresponding protein comprising of 302 amino acid residues...
August 12, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28804604/why-whey-camel-whey-protein-as-a-new-dietary-approach-to-the-management-of-free-radicals-and-for-the-treatment-of-different-health-disorders
#5
REVIEW
Gamal Badr, Nancy K Ramadan, Leila H Sayed, Badr M Badr, Hossam M Omar, Zeliha Selamoglu
The balance between free radicals and antioxidants is an important factor for maintaining health and slowing disease progression. The use of antioxidants, particularly natural antioxidants, has become an important strategy for dealing with this cause of widespread diseases. Natural antioxidants have been used as therapeutic tools against many diseases because they are safe, effective, and inexpensive and are among the most commonly used adjuvants in the treatment of several diseases. Camel whey protein (CWP) is considered a strong natural antioxidant because it decreases oxidative stress, enhances immune system function, and increases glutathione levels...
April 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28801731/molecular-mapping-and-genomics-of-soybean-seed-protein-a-review-and-perspective-for-the-future
#6
REVIEW
Gunvant Patil, Rouf Mian, Tri Vuong, Vince Pantalone, Qijian Song, Pengyin Chen, Grover J Shannon, Tommy C Carter, Henry T Nguyen
Genetic improvement of soybean protein meal is a complex process because of negative correlation with oil, yield, and temperature. This review describes the progress in mapping and genomics, identifies knowledge gaps, and highlights the need of integrated approaches. Meal protein derived from soybean [Glycine max (L) Merr.] seed is the primary source of protein in poultry and livestock feed. Protein is a key factor that determines the nutritional and economical value of soybean. Genetic improvement of soybean seed protein content is highly desirable, and major quantitative trait loci (QTL) for soybean protein have been detected and repeatedly mapped on chromosomes (Chr...
August 11, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28800486/the-influence-of-e-waste-recycling-on-the-molecular-ecological-network-of-soil-microbial-communities-in-pakistan-and-china
#7
Longfei Jiang, Zhineng Cheng, Dayi Zhang, Mengke Song, Yujie Wang, Chunling Luo, Hua Yin, Jun Li, Gan Zhang
Primitive electronic waste (e-waste) recycling releases large amounts of organic pollutants and heavy metals into the environment. As crucial moderators of geochemical cycling processes and pollutant remediation, soil microbes may be affected by these contaminants. We collected soil samples heavily contaminated by e-waste recycling in China and Pakistan, and analyzed the indigenous microbial communities. The results of this work revealed that the microbial community composition and diversity, at both whole and core community levels, were affected significantly by polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs) and heavy metals (e...
August 8, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28799899/the-gut-microbiota-food-science-and-human-nutrition-a-timely-marriage
#8
REVIEW
Michael J Barratt, Carlito Lebrilla, Howard-Yana Shapiro, Jeffrey I Gordon
Analytic advances are enabling more precise definitions of the molecular composition of key food staples incorporated into contemporary diets and how the nutrient landscapes of these staples vary as a function of cultivar and food processing methods. This knowledge, combined with insights about the interrelationship between consumer microbiota configurations and biotransformation of food ingredients, should have a number of effects on agriculture, food production, and strategies for improving the nutritional value of foods and health status...
August 9, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28799009/genome-wide-survey-and-characterization-of-fatty-acid-desaturase-gene-family-in-brassica-napus-and-its-parental-species
#9
Yufei Xue, Baojun Chen, Rui Wang, Aung Naing Win, Jiana Li, Yourong Chai
Rapeseed (Brassica napus) is an important oilseed crop worldwide, and fatty acid (FA) compositions determine the nutritional and economic value of its seed oil. Fatty acid desaturases (FADs) play a pivotal role in regulating FA compositions, but to date, no comprehensive genome-wide analysis of FAD gene family in rapeseed and its parent species has been reported. In this study, using homology searches, 84, 45, and 44 FAD genes were identified in rapeseed, Brassica rapa, and Brassica oleracea genomes, respectively...
August 10, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28796830/dynamic-changes-of-nutrient-composition-throughout-the-entire-life-cycle-of-black-soldier-fly
#10
Xiu Liu, Xuan Chen, Hui Wang, Qinqin Yang, Kashif Ur Rehman, Wu Li, Minmin Cai, Qing Li, Lorenzo Mazza, Jibin Zhang, Ziniu Yu, Longyu Zheng
Black soldier fly (BSF) larvae, Hermetia illucens L., develops on organic wastes, reducing ecological pollution and converting waste biomass into protein and fat rich insect biomass. BSF can replace increasingly expensive protein sources used in poultry, aquaculture and livestock compound diet formulation, such as fish meal and soybean meal, which holds the potential to alleviate future food and feed insecurity. The fate of nutritional spectra in BSF during its life cycle phases is still poorly understood. This study assessed metabolic changes in nutrition composition of BSF from egg to adult...
2017: PloS One
https://www.readbyqxmd.com/read/28796169/cell-surface-and-nuclear-receptors-in-the-colon-as-targets-for-bacterial-metabolites-and-its-relevance-to-colon-health
#11
REVIEW
Sathish Sivaprakasam, Yangzom D Bhutia, Sabarish Ramachandran, Vadivel Ganapathy
The symbiotic co-habitation of bacteria in the host colon is mutually beneficial to both partners. While the host provides the place and food for the bacteria to colonize and live, the bacteria in turn help the host in energy and nutritional homeostasis, development and maturation of the mucosal immune system, and protection against inflammation and carcinogenesis. In this review, we highlight the molecular mediators of the effective communication between the bacteria and the host, focusing on selective metabolites from the bacteria that serve as messengers to the host by acting through selective receptors in the host colon...
August 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28783113/-omics-in-human-colostrum-and-mature-milk-looking-to-old-data-with-new-eyes
#12
REVIEW
Flaminia Bardanzellu, Vassilios Fanos, Alessandra Reali
Human Milk (HM) is the best source for newborn nutrition until at least six months; it exerts anti-inflammatory and anti-infective functions, promotes immune system formation and supports organ development. Breastfeeding could also protect from obesity, diabetes and cardiovascular disease. Furthermore, human colostrum (HC) presents a peculiar role in newborn support as a protective effect against allergic and chronic diseases, in addition to long-term metabolic benefits. In this review, we discuss the recent literature regarding "omics" technologies and growth factors (GF) in HC and the effects of pasteurization on its composition...
August 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28780073/the-epidemiology-of-esophageal-adenocarcinoma
#13
Helen G Coleman, Shao-Hua Xie, Jesper Lagergren
The incidence of esophageal adenocarcinoma (EAC) has increased in many Western countries, and is higher in men than women. Some risk factors for EAC have been identified-mainly gastroesophageal reflux disease (GERD), Barrett's esophagus, obesity, and tobacco smoking. It is not clear whether interventions to address these factors can reduce risk of EAC, although some evidence exists for smoking cessation. Although consumption of alcohol is not associated with EAC risk, other exposures, such as physical activity, nutrition, and medication use, require further study...
August 2, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28771698/molecular-and-functional-genetics-of-the-proopiomelanocortin-gene-food-intake-regulation-and-obesity
#14
REVIEW
Marcelo Rubinstein, Malcolm J Low
During the last decade, the obesity pandemia has skyrocketed, and the spectre is threatening children, adolescents and lower income families worldwide. Although driven by an increase in the consumption of ultra-processed edibles of poor nutritional value, the obesogenic changes in contemporary human lifestyle affect people differently, revealing that some individuals are more prone to developing increased adiposity. During the last years, we performed a variety of genetic, evolutionary, biochemical and behavioral experiments that allowed us to understand how a group of neurons present in the arcuate nucleus of the hypothalamus regulate the expression of the proopiomelanocortin (Pomc) gene and induce satiety...
August 3, 2017: FEBS Letters
https://www.readbyqxmd.com/read/28770121/necrotizing-pneumonia-an-emerging-problem-in-children
#15
REVIEW
I Brent Masters, Alan F Isles, Keith Grimwood
BACKGROUND: In children, necrotizing pneumonia (NP) is an uncommon, severe complication of pneumonia. It is characterized by destruction of the underlying lung parenchyma resulting in multiple small, thin-walled cavities and is often accompanied by empyema and bronchopleural fistulae. REVIEW: NP in children was first reported in children in 1994, and since then there has been a gradual increase in cases, which is partially explained by greater physician awareness and use of contrast computed tomography (CT) scans, and by temporal changes in circulating respiratory pathogens and antibiotic prescribing...
2017: Pneumonia
https://www.readbyqxmd.com/read/28768569/tissue-cell-stress-response-to-obesity-and-its-interaction-with-late-gestation-diet
#16
Vivek Saroha, Neele S Dellschaft, Duane H Keisler, David S Gardner, Helen Budge, Sylvain P Sebert, Michael E Symonds
Intrauterine growth restriction in late pregnancy can contribute to adverse long-term metabolic health in the offspring. In the present study we used an animal (sheep) model of maternal dietary manipulation in late pregnancy, combined with exposure of the offspring to a low-activity, obesogenic environment after weaning, to characterise the effects on glucose homeostasis. Dizygotic twin-pregnant sheep were either fed to 60% of requirements (nutrient restriction (R)) or fed ad libitum (~140% of requirements (A)) from 110 days gestation until term (~147 days)...
August 3, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28764075/size-exclusion-chromatography-hplc-sec-technique-optimization-by-simplex-method-to-estimate-molecular-weight-distribution-of-agave-fructans
#17
Lorena Moreno-Vilet, Stéphane Bostyn, Jose-Luis Flores-Montaño, Rosa-María Camacho-Ruiz
Agave fructans are increasingly important in food industry and nutrition sciences as a potential ingredient of functional food, thus practical analysis tools to characterize them are needed. In view of the importance of the molecular weight on the functional properties of agave fructans, this study has the purpose to optimize a method to determine their molecular weight distribution by HPLC-SEC for industrial application. The optimization was carried out using a simplex method. The optimum conditions obtained were at column temperature of 61...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28763436/the-beneficial-effects-of-dietary-restriction-on-learning-are-distinct-from-its-effects-on-longevity-and-mediated-by-depletion-of-a-neuroinhibitory-metabolite
#18
Mihir Vohra, George A Lemieux, Lin Lin, Kaveh Ashrafi
In species ranging from humans to Caenorhabditis elegans, dietary restriction (DR) grants numerous benefits, including enhanced learning. The precise mechanisms by which DR engenders benefits on processes related to learning remain poorly understood. As a result, it is unclear whether the learning benefits of DR are due to myriad improvements in mechanisms that collectively confer improved cellular health and extension of organismal lifespan or due to specific neural mechanisms. Using an associative learning paradigm in C...
August 2017: PLoS Biology
https://www.readbyqxmd.com/read/28763157/a-unifying-mathematical-model-of-lipid-droplet-metabolism-reveals-key-molecular-players-in-the-development-of-hepatic-steatosis
#19
Christin Wallstab, Dimitra Eleftheriadou, Theresa Schulz, Georg Damm, Daniel Seehofer, Jürgen Borlak, Hermann-Georg Holzhütter, Nikolaus Berndt
The liver responds to elevated plasma concentrations of free fatty acids (FFAs) with an enhanced uptake of FFAs and their esterification to triacylglycerol (TAG). On the long term this may result in massive hepatic TAG accumulation called steatosis hepatitis. In hepatocytes, the poor water-soluble TAG is packed in specialized organelles: Lipid droplets (LDs) serving as transient cellular deposit and lipoproteins (LPs) transporting TAG and cholesterol esters to extra-hepatic tissues. The dynamics of these organelles is controlled by a variety of regulatory surface proteins (RSPs)...
August 1, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28762531/purification-and-characterization-of-trypsin-produced-by-gut-bacteria-from-anticarsia-gemmatalis
#20
Franciny Martins Pilon, Camila da Rocha Silva, Liliane Evangelista Visôtto, Rafael de Almeida Barros, Neilier Rodrigues da Silva Júnior, Wellington Garcia Campos, Maria Goreti de Almeida Oliveira
Purification of active trypsin in the digestive process of insects is essential for the development of potent protease inhibitors (PIs) as an emerging pest control technology and research into insect adaptations to dietary PIs. An important aspect is the presence of proteolytic microorganisms, which contribute to host nutrition. Here, we purified trypsins produced by bacteria Bacillus cereus, Enterococcus mundtii, Enterococcus gallinarum, and Staphylococcus xylosus isolated from the midgut of Anticarsia gemmatalis...
August 1, 2017: Archives of Insect Biochemistry and Physiology
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