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https://www.readbyqxmd.com/read/28335577/gc-ms-metabolomic-analysis-to-reveal-the-metabolites-and-biological-pathways-involved-in-the-developmental-stages-and-tissue-response-of-panax-ginseng
#1
Jia Liu, Yang Liu, Yu Wang, Ann Abozeid, Yuan-Gang Zu, Xiao-Ning Zhang, Zhong-Hua Tang
Ginsenosides, the major compounds present in ginseng, are known to have numerous physiological and pharmacological effects. The physiological processes, enzymes and genes involved in ginsenoside synthesis in P. ginseng have been well characterized. However, relatively little information is known about the dynamic metabolic changes that occur during ginsenoside accumulation in ginseng. To explore this topic, we isolated metabolites from different tissues at different growth stages, and identified and characterized them by using gas chromatography coupled with mass spectrometry (GC-MS)...
March 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335521/gene-transformation-induced-changes-in-chemical-functional-group-features-and-molecular-structure-conformation-in-alfalfa-plants-co-expressing-lc-bhlh-and-c1-myb-transcriptive-flavanoid-regulatory-genes-effects-of-single-gene-and-two-gene-insertion
#2
Ravindra G Heendeniya, Peiqiang Yu
Alfalfa (Medicago sativa L.) genotypes transformed with Lc-bHLH and Lc transcription genes were developed with the intention of stimulating proanthocyanidin synthesis in the aerial parts of the plant. To our knowledge, there are no studies on the effect of single-gene and two-gene transformation on chemical functional groups and molecular structure changes in these plants. The objective of this study was to use advanced molecular spectroscopy with multivariate chemometrics to determine chemical functional group intensity and molecular structure changes in alfalfa plants when co-expressing Lc-bHLH and C1-MYB transcriptive flavanoid regulatory genes in comparison with non-transgenic (NT) and AC Grazeland (ACGL) genotypes...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335509/novel-diagnostic-and-predictive-biomarkers-in-pancreatic-adenocarcinoma
#3
REVIEW
John C Chang, Madappa Kundranda
Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal disease for a multitude of reasons including very late diagnosis. This in part is due to the lack of understanding of the biological behavior of PDAC and the ineffective screening for this disease. Significant efforts have been dedicated to finding the appropriate serum and imaging biomarkers to help early detection and predict response to treatment of PDAC. Carbohydrate antigen 19-9 (CA 19-9) has been the most validated serum marker and has the highest positive predictive value as a stand-alone marker...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335426/elevated-serum-hepcidin-levels-during-an-intensified-training-period-in-well-trained-female-long-distance-runners
#4
Aya Ishibashi, Naho Maeda, Daichi Sumi, Kazushige Goto
Iron is essential for providing oxygen to working muscles during exercise, and iron deficiency leads to decreased exercise capacity during endurance events. However, the mechanism of iron deficiency among endurance athletes remains unclear. In this study, we compared iron status between two periods involving different training regimens. Sixteen female long-distance runners participated. Over a seven-month period, fasting blood samples were collected during their regular training period (LOW; middle of February) and during an intensified training period (INT; late of August) to determine blood hematological, iron, and inflammatory parameters...
March 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28335213/biosynthesis-of-metal-nanoparticles-novel-efficient-heterogeneous-nanocatalysts
#5
REVIEW
Jose M Palomo, Marco Filice
This review compiles the most recent advances described in literature on the preparation of noble metal nanoparticles induced by biological entities. The use of different free or substituted carbohydrates, peptides, proteins, microorganisms or plants have been successfully applied as a new green concept in the development of innovative strategies to prepare these nanoparticles as different nanostructures with different forms and sizes. As a second part of this review, the application of their synthetic ability as new heterogonous catalysts has been described in C-C bond-forming reactions (as Suzuki, Heck, cycloaddition or multicomponent), oxidations and dynamic kinetic resolutions...
May 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335093/carbohydrate-and-lipid-spectroscopic-molecular-structures-of-different-alfalfa-hay-and-their-relationship-with-nutrient-availability-in-ruminants
#6
Mojtaba Yari, Reza Valizadeh, Abbas Ali Naserian, Arjan Jonker, Peiqiang Yu
Objective: This study was conducted to determine molecular structures related to carbohydrates and lipid in alfalfa hay cut at early bud, late bud and early flower and in the afternoon and next morning using Fourier Transform Infrared Spectroscopy (FT/IR) and to determine their relationship with alfalfa hay nutrient profile and availability in ruminants. Methods: Chemical composition analysis, carbohydrate fractionation, in situ ruminal degradability and DVE/OEB model were used to measure nutrient profile and availability of alfalfa hay...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28334893/a-new-score-for-screening-of-malnutrition-in-patients-with-inoperable-gastric-adenocarcinoma
#7
Ali Esfahani, Mohammad Hossein Somi, Mohammad Asghari Jafarabadi, Alireza Ostadrahimi, Mousa Ghayour Nahand, Zahra Fathifar, Akram Doostzadeh, Zohreh Ghoreishi
Background: Malnutrition is common in patients with gastric cancer. Early identification of malnourished patients results in improving quality of life. We aimed to assess the nutritional status of patients with inoperable gastric adenocarcinoma (IGA) and finding a precise malnutrition screening score for these patients before the onset of chemotherapy. Methods: Nutritional status was assessed using patient generated subjective global assessment (PG-SGA), visceral proteins, and high-sensitivity C reactive protein...
March 10, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28334501/unravelling-a-direct-role-for-polysaccharide-%C3%AE-strands-in-the-higher-order-structure-of-physical-hydrogels
#8
Anja Rüther, Aurelien Forget, Anjan Roy, Carolina Carballo, Florian Mießmer, Rina K Dukor, Laurence A Nafie, Christian Johannessen, V Prasad Shastri, Steffen Lüdeke
The mechanical properties of agarose-derived hydrogels depend on the scaffolding of the polysaccharide network. To identify and quantify such higher order structure, we applied Raman optical activity (ROA)-a spectroscopic technique that is highly sensitive toward carbohydrates-on native agarose and chemically modified agarose in the gel phase for the first time. By spectral global fitting, we isolated features that change as a function of backbone carboxylation (28, 40, 50, 60, 80, and 93 %) from other features that remain unchanged...
March 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28334446/molecular-glycopathology-by-capillary-electrophoresis-analysis-of-the-n-glycome-of-formalin-fixed-paraffin-embedded-mouse-tissue-samples
#9
Boglarka Donczo, Mate Szarka, Jozsef Tovari, Gyorgyi Ostoros, Eszter Csanky, Andras Guttman
Capillary electrophoresis with laser-induced fluorescence (CE-LIF) detection was used to analyze endoglycosidase released and fluorophore-labeled N-glycans from formalin-fixed paraffin-embedded (FFPE) mouse tissue samples of lung, brain, heart, spleen, liver, kidney and intestine. The FFPE samples were first deparaffinized followed by solubilization and glycoprotein retrieval. PNGase F mediated release of the N-linked oligosaccharides was followed by labeling with aminopyrene trisulfonate. After CE-LIF glycoprofiling of the FFPE mouse tissues, the N-glycan pool of the lung specimen was subject to further investigation by exoglycosidase array based carbohydrate sequencing...
March 23, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28334245/coordinated-nitrogen-and-carbon-remobilization-for-nitrate-assimilation-in-leaf-sheath-and-root-and-associated-cytokinin-signals-during-early-regrowth-of-lolium-perenne
#10
Jessica Roche, Matthew H Turnbull, Qianqian Guo, Ondrej Novák, Jana Späth, Steven P Gieseg, Paula E Jameson, Jonathan Love
Background and Aims: The efficiency of N assimilation in response to defoliation is a critical component of plant regrowth and forage production. The aim of this research was to test the effect of the internal C/N balance on NO3- assimilation and to estimate the associated cytokinin signals following defoliation of perennial ryegrass ( Lolium perenne L. 'Grasslands Nui') plants. Methods: Plants, manipulated to have contrasting internal N content and contrasting availability of water soluble carbohydrates (WSCs), were obtained by exposure to either continuous light or short days (8:16 h light-dark), and watered with modified N-free Hoagland medium containing either high (5 m m ) or low (50 μ m ) NO3- as sole N source...
March 14, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28334006/assessing-various-infrared-ir-microscopic-imaging-techniques-for-post-mortem-interval-evaluation-of-human-skeletal-remains
#11
Claudia Woess, Seraphin Hubert Unterberger, Clemens Roider, Monika Ritsch-Marte, Nadin Pemberger, Jan Cemper-Kiesslich, Petra Hatzer-Grubwieser, Walther Parson, Johannes Dominikus Pallua
Due to the influence of many environmental processes, a precise determination of the post-mortem interval (PMI) of skeletal remains is known to be very complicated. Although methods for the investigation of the PMI exist, there still remains much room for improvement. In this study the applicability of infrared (IR) microscopic imaging techniques such as reflection-, ATR- and Raman- microscopic imaging for the estimation of the PMI of human skeletal remains was tested. PMI specific features were identified and visualized by overlaying IR imaging data with morphological tissue structures obtained using light microscopy to differentiate between forensic and archaeological bone samples...
2017: PloS One
https://www.readbyqxmd.com/read/28333766/dietary-inadequacies-in-hiv-infected-and-uninfected-school-aged-children-in-johannesburg-south-africa
#12
Stephanie Shiau, Acadia Webber, Renate Strehlau, Faeezah Patel, Ashraf Coovadia, Samantha Kozakowski, Susan Brodlie, Michael T Yin, Louise Kuhn, Stephen M Arpadi
OBJECTIVES: The World Health Organization (WHO) recommends that HIV-infected children increase energy intake and maintain a balanced macronutrient distribution for optimal growth and nutrition. Few studies have evaluated dietary intake of HIV-infected children in resource-limited settings. METHODS: We conducted a cross-sectional analysis of the dietary intake of 220 perinatally HIV-infected children and 220 HIV-uninfected controls ages 5-9 years in Johannesburg, South Africa...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28333072/detection-of-circulating-tumor-cells-using-negative-enrichment-immunofluorescence-and-an-in-situ-hybridization-system-in-pancreatic-cancer
#13
Yu Xu, Tai Qin, Jing Li, Xiuchao Wang, Chuntao Gao, Chao Xu, Jihui Hao, Jingcheng Liu, Song Gao, He Ren
Pancreatic cancer (PC) is the most lethal type of gastrointestinal cancer, and early detection and monitoring is an urgent problem. Circulating tumor cells (CTCs) are emerging as a non-invasive biomarker for tumor detection. However, the low sensitivity is a main problem in the traditional CellSearch System for detecting CTCs, especially in patients with PC. In this study, we used negative enrichment (NE), immunofluorescence and in situ hybridization (FISH) of chromosome 8 (NE-iFISH) to capture and identify CTCs in PC patients...
March 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28333071/combined-effects-of-curcumin-and-lycopene-or-bixin-in-yoghurt-on-inhibition-of-ldl-oxidation-and-increases-in-hdl-and-paraoxonase-levels-in-streptozotocin-diabetic-rats
#14
Renata Pires Assis, Carlos Alberto Arcaro, Vânia Ortega Gutierres, Juliana Oriel Oliveira, Paulo Inácio Costa, Amanda Martins Baviera, Iguatemy Lourenço Brunetti
Combination therapy using natural antioxidants to manage diabetes mellitus and its complications is an emerging trend. The aim of this study was to investigate the changes promoted by treatment of streptozotocin (STZ)-diabetic rats with yoghurt enriched with the bioactives curcumin, lycopene, or bixin (the latter two being carotenoids). Antioxidants were administered individually, or as mixtures, and biomarkers of metabolic and oxidative disturbances, particularly those associated with cardiovascular risk, were assessed...
March 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28332296/electrochemistry-for-the-generation-of-renewable-chemicals-one-pot-electrochemical-deoxygenation-of-xylose-to-%C3%AE-valerolactone
#15
Olusola Oladele James, Waldemer Sauter, Uwe Schröder
In this study, we demonstrate the electrochemical conversion of xylose to δ-valerolactone via carbonyl intermediates. The conversion was achieved in aqueous media and at ambient conditions. This study also demonstrates that feedstocks for the use of electrochemistry for production of renewable chemicals and biofuels can be extended to primary carbohydrate molecules. This is the first report on a one-pot electrochemical deoxygenation of xylose to δ-valerolactone.
March 22, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28332163/fermentation-of-dietetic-fiber-from-green-bean-and-prickly-pear-shell-by-pure-and-mixture-culture-of-lactobacillus-acidophilus-la-5-and-bifidobacterium-bifidum-450b
#16
Y N Mora-Cura, N P Meléndez-Rentería, M Delgado-García, J C Contreras-Esquivel, J A Morlett-Chávez, C N Aguilar, R Rodríguez-Herrera
The aim of this study was to evaluate the fermentation of dietary fiber from green bean (Phaseolus vulgaris) and prickly pear shell (Opuntia ficus-indica) by Lactobacillus acidophilus LA-5 and Bifidobacterium bifidum 450B growing as mono-culture and co-culture, the fermentation products, and proteins expressed during this process. The analysis of the fermentation profile showed a major growth of bacteria in the culture media of each dietary fiber supplemented with glucose, and particularly B. bifidum 450B at 48 h showed the highest growth...
March 23, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28332118/nutrition-and-training-influences-on-the-regulation-of-mitochondrial-adenosine-diphosphate-sensitivity-and-bioenergetics
#17
REVIEW
Graham P Holloway
Since the seminal finding almost 50 years ago that exercise training increases mitochondrial content in skeletal muscle, a considerable amount of research has been dedicated to elucidate the mechanisms inducing mitochondrial biogenesis. The discovery of peroxisome proliferator-activated receptor γ co-activator 1α as a major regulator of exercise-induced gene transcription was instrumental in beginning to understand the signals regulating this process. However, almost two decades after its discovery, our understanding of the signals inducing mitochondrial biogenesis remain poorly defined, limiting our insights into possible novel training modalities in elite athletes that can increase the oxidative potential of muscle...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332117/fructose-metabolism-from-a-functional-perspective-implications-for-athletes
#18
REVIEW
Luc Tappy, Robin Rosset
Substantial amounts of fructose are present in our diet. Unlike glucose, this hexose cannot be metabolized by most cells and has first to be converted into glucose, lactate or fatty acids by enterocytes, hepatocytes and kidney proximal tubule cells, which all express specific fructose-metabolizing enzymes. This particular metabolism may then be detrimental in resting, sedentary subjects; however, this may also present some advantages for athletes. First, since fructose and glucose are absorbed through distinct, saturable gut transporters, co-ingestion of glucose and fructose may increase total carbohydrate absorption and oxidation...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332115/periodized-nutrition-for-athletes
#19
REVIEW
Asker E Jeukendrup
It is becoming increasingly clear that adaptations, initiated by exercise, can be amplified or reduced by nutrition. Various methods have been discussed to optimize training adaptations and some of these methods have been subject to extensive study. To date, most methods have focused on skeletal muscle, but it is important to note that training effects also include adaptations in other tissues (e.g., brain, vasculature), improvements in the absorptive capacity of the intestine, increases in tolerance to dehydration, and other effects that have received less attention in the literature...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332114/training-the-gut-for-athletes
#20
REVIEW
Asker E Jeukendrup
The gastrointestinal (GI) tract plays a critical role in delivering carbohydrate and fluid during prolonged exercise and can therefore be a major determinant of performance. The incidence of GI problems in athletes participating in endurance events is high, indicating that GI function is not always optimal in those conditions. A substantial body of evidence suggests that the GI system is highly adaptable. Gastric emptying as well as stomach comfort can be "trained" and perceptions of fullness decreased; some studies have suggested that nutrient-specific increases in gastric emptying may occur...
March 22, 2017: Sports Medicine
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