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Vitamin B2

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https://www.readbyqxmd.com/read/28710938/lack-of-effects-of-a-sobering-product-eezup-on-the-blood-ethanol-and-congener-alcohol-concentration
#1
Cora Wunder, Sarah Hain, Sarah C Koelzer, Alexander Paulke, Marcel A Verhoff, Stefan W Toennes
INTRODUCTION: The lifestyle product 'Eezup!' appeared on the German market and promised to normalize energy metabolism. Among vitamins (B1, B2, B6, C, E and zinc), rice protein and fructose the addition of alcohol dehydrogenase and catalase enzymes is a novel approach. The product was advertised as capable of boosting the rate of alcohol elimination. METHODS: Seventeen subjects (11 men, 6 women, 19-58 years old), participated in a two-way crossover drinking study...
June 28, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28710484/colored-and-fluorescent-nanofibrous-silk-as-a-physically-transient-chemosensor-and-vitamin-deliverer
#2
Kyungtaek Min, Sookyoung Kim, Chang Gun Kim, Sunghwan Kim
Biodegradable and physically transient optics represent an emerging paradigm in healthcare devices by harnessing optically active system and obviating issues with chronic uses. Light emitting components that can efficiently interact with their environments have advantages of high sensitivity, visibility, and wireless operation. Here, we report a novel combination of silk biopolymer and optically active organic dyes resulting in versatile fluorescent silk nanofibers (FSNs). FSNs generated by the electrospinning method exhibit attractive functions of the doped organic dyes along with programming the system that physically disappear at prescribed time...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28676375/the-family-of-berberine-bridge-enzyme-like-enzymes-a-treasure-trove-of-oxidative-reactions
#3
REVIEW
Bastian Daniel, Barbara Konrad, Marina Toplak, Majd Lahham, Julia Messenlehner, Andreas Winkler, Peter Macheroux
Biological oxidations form the basis of life on earth by utilizing organic compounds as electron donors to drive the generation of metabolic energy carriers, such as ATP. Oxidative reactions are also important for the biosynthesis of complex compounds, i.e. natural products such as alkaloids that provide vital benefits for organisms in all kingdoms of life. The vitamin B2-derived cofactors flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) enable an astonishingly diverse array of oxidative reactions that is based on the versatility of the redox-active isoalloxazine ring...
July 1, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28664691/influence-of-protein-deficient-diet-vitamin-b-sub-2-sub-supplementation-and-physical-training-on-serum-composition-of-polyunsaturated-fatty-acids-pufas-in-rats
#4
Aneta Lewicka, Sławomir Lewicki, Anna Kłos, Bogdan Dębski, Tomasz Kurył, Jerzy Bertrandt
[b]Introduction[/b]. Prolonged shortages of protein in the diet significantly alter the composition and content of polyunsaturated fatty acids (PUFA) in tissues and body fluids. One of nutritional factors which may reduce negative effects of protein malnutrition might be vitamin B[sub]2[/sub] due to its influence on lipids metabolism. [b]Objective. [/b]The aim of the study was to investigate the influence of low protein (LP) diet enriched with vitamin B[sub]2[/sub] on the content and composition of PUFA in the blood serum of rats treated with dosed physical exercise...
May 11, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28659447/unravelling-the-relationship-between-the-tsetse-fly-and-its-obligate-symbiont-wigglesworthia-transcriptomic-and-metabolomic-landscapes-reveal-highly-integrated-physiological-networks
#5
XiaoLi Bing, Geoffrey M Attardo, Aurelien Vigneron, Emre Aksoy, Francesca Scolari, Anna Malacrida, Brian L Weiss, Serap Aksoy
Insects with restricted diets rely on obligate microbes to fulfil nutritional requirements essential for biological function. Tsetse flies, vectors of African trypanosome parasites, feed exclusively on vertebrate blood and harbour the obligate endosymbiont Wigglesworthia glossinidia. Without Wigglesworthia, tsetse are unable to reproduce. These symbionts are sheltered within specialized cells (bacteriocytes) that form the midgut-associated bacteriome organ. To decipher the core functions of this symbiosis essential for tsetse's survival, we performed dual-RNA-seq analysis of the bacteriome, coupled with metabolomic analysis of bacteriome and haemolymph collected from normal and symbiont-cured (sterile) females...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28654291/photocatalytic-e%C3%A2-z-isomerization-of-polarized-alkenes-inspired-by-the-visual-cycle-mechanistic-dichotomy-and-origin-of-selectivity
#6
Jan B Metternich, Denis Gennadievich Artiukhin, Mareike C Holland, Maximilian von Bremen-Kühne, Johannes Neugebauer, Ryan Gilmour
Iteratively executed with exquisite spatial and temporal control, the selective isomerization of polarized alkenes underpins a plethora of complex biological processes ranging from natural product biosynthesis through to the mammalian visual cycle. However, Nature's proficiency conceals the inherent difficulties in replicating this contra-thermodynamic transformation in the laboratory. Recently, we disclosed the first highly Z-selective isomerization of polarized alkenes, employing the cinnamoyl chromophore as a retinal surrogate under UV-irradiation (402 nm) with (-)-riboflavin (vitamin B2) as an inexpensive, organic photocatalyst (J...
June 27, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28649995/cytokines-in-systemic-lupus-erythematosus-far-beyond-th1-th2-dualism
#7
Poliana Macedo Guimarães, Bruna Miglioranza Scavuzzi, Nicole Perugini Stadtlober, Lorena Flor da Rosa Santos Silva, Marcell Alysson Batisti Lozovoy, Tathiana Mayumi Veiga Iriyoda, Neide Tomimura Costa, Edna Maria Vissoci Reiche, Michael Maes, Isaias Dichi, Andréa Name Colado Simão
The aims of this study were to delineate cytokines profiles of systemic lupus erythematosus (SLE), construct prediction models for diagnosis and disease activity using those profiles, and to examine the associations between TNFB Ncol polymorphism, body mass index (BMI), and vitamin D levels with cytokine levels. 200 SLE patients and 196 healthy controls participated in this case-control study. Plasma cytokines levels of TNF-α, IFN-γ, IL-1β, IL- 4, IL-6, IL-10, IL-12, IL-17 were measured and cytokines profiles were computed...
June 26, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28619619/flavin-catalyzed-redox-tailoring-reactions-in-natural-product-biosynthesis
#8
REVIEW
Robin Teufel
Natural products are distinct and often highly complex organic molecules that constitute not only an important drug source, but have also pushed the field of organic chemistry by providing intricate targets for total synthesis. How the astonishing structural diversity of natural products is enzymatically generated in biosynthetic pathways remains a challenging research area, which requires detailed and sophisticated approaches to elucidate the underlying catalytic mechanisms. Commonly, the diversification of precursor molecules into distinct natural products relies on the action of pathway-specific tailoring enzymes that catalyze, e...
June 12, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28613401/nutrient-profiles-and-volatile-odorous-compounds-of-raw-milk-after-exposure-to-electron-beam-pasteurizing-doses
#9
Lindsay R Ward, Chris R Kerth, Suresh D Pillai
Raw milk is known to contain relatively high numbers of microorganisms, some of which include microbial pathogens. Electron beam (eBeam) processing is a nonthermal pasteurization food processing technology. The underlying hypothesis was that eBeam processing will not negatively influence the composition, nutrient content, and aroma profile of raw milk. Raw milk samples were exposed to eBeam doses of 1 and 2 kGy, since our studies had shown that 2 kGy is suitable for raw milk pasteurization. The untreated and eBeam-treated raw milk samples were analyzed to detect changes in lactose, vitamin B2 , vitamin B12 , and calcium concentrations...
July 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28604131/micronutrient-intake-and-the-contribution-of-dietary-supplements-in-hispanic-infants
#10
Kiara Amaro-Rivera, Andrea López-Cepero, Beatriz Diaz, Jae Eun Lee, Cristina Palacios
To calculate micronutrient adequacy among infants and toddlers and to determine the contribution of dietary supplements to this adequacy, micronutrient intake was assessed using two nonconsecutive 24-hour recalls in a sample of 296 infants aged 0-24 months. Micronutrient intake was calculated from foods and beverages and from supplements and compared between nonusers and users of supplements. Percentages of children below the Dietary Reference Intake (DRI) and above the tolerable upper limit intake (UL) were also compared between groups...
June 12, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28598562/genetic-polymorphisms-and-folate-status
#11
REVIEW
Mami Hiraoka, Yasuo Kagawa
Moderate hyperhomocysteinemia-induced low folate status is an independent risk factor for cardiovascular disease, dementia, and depression. Folate is an essential cofactor in the one-carbon metabolism pathway and is necessary in amino acid metabolism, purine and thymidylate synthesis, and DNA methylation. In the folate cycle and homocysteine metabolism, folate, vitamin B12, vitamin B6, and vitamin B2 are important cofactors. Many enzymes are involved in folate transport and uptake, the folate pathway, and homocysteine (Hcy) metabolism, and various polymorphisms have been documented in these enzymes...
June 9, 2017: Congenital Anomalies
https://www.readbyqxmd.com/read/28584074/gut-derived-serum-lipopolysaccharide-is-associated-with-enhanced-risk-of-major-adverse-cardiovascular-events-in-atrial-fibrillation-effect-of-adherence-to-mediterranean-diet
#12
Daniele Pastori, Roberto Carnevale, Cristina Nocella, Marta Novo, Maria Santulli, Vittoria Cammisotto, Danilo Menichelli, Pasquale Pignatelli, Francesco Violi
BACKGROUND: Gut microbiota is emerging as a novel risk factor for atherothrombosis, but the predictive role of gut-derived lipopolysaccharide (LPS) is unknown. We analyzed (1) the association between LPS and major adverse cardiovascular events (MACE) in atrial fibrillation (AF) and (2) its relationship with adherence to a Mediterranean diet (Med-diet). METHODS AND RESULTS: This was a prospective single-center study including 912 AF patients treated with vitamin K antagonists (3716 patient-years)...
June 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28572888/association-between-the-eating-family-meal-and-the-prevalence-of-metabolic-syndrome-using-data-from-korea-national-health-and-nutrition-examination-survey-2007-2012
#13
Shin-Ae Park, Woo-Chul Park, Yu-Jin Kwon, Jae-Yong Shim
BACKGROUND: Several studies have shown that family meals promote a well-balanced and healthier diet and weight status. Metabolic syndrome is related to eating behavior. This study investigated the association between eating family meals and the prevalence of metabolic syndrome. METHODS: This cross-sectional study included 4,529 subjects who participated in the Korea National Health and Nutrition Examination Survey IV and V (2007-2012). A self-reported questionnaire was used to assess dietary status...
May 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/28572831/the-effect-of-pudilan-anti-inflammatory-oral-liquid-on-the-treatment-of-mild-recurrent-aphthous-ulcers
#14
Ying Jin, Xiaoping Lin, Liming Song, Mengnan Liu, Ying Zhang, Xiangmin Qi, Danping Zhao
Recurrent aphthous ulcers are the most common recurrent oral mucosal lesions characterized by recurrence and pain. The aim of this research is to evaluate the short-term curative effect of the traditional Chinese medicine "Pudilan anti-inflammatory oral liquid" on mild recurrent aphthous ulcers. A total of 234 patients were divided into a treatment group and a control group. Both groups used vitamin B2 as the basis of treatment. The treatment group took a Pudilan anti-inflammatory oral solution for 8 days while the control group was given a liquid placebo...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28569665/a-vitamin-b2-sensing-mechanism-that-regulates-gut-protease-activity-to-impact-animal-s-food-behavior-and-growth
#15
Bin Qi, Marina Kniazeva, Min Han
To survive challenging environments, animals acquired the ability to evaluate food quality in the intestine and respond to nutrient deficiencies with changes in food-response behavior, metabolism and development. However, the regulatory mechanisms underlying intestinal sensing of specific nutrients, especially micronutrients such as vitamins, and the connections to downstream physiological responses in animals remain underexplored. We have established a system to analyze the intestinal response to vitamin B2 (VB2) deficiency in Caenorhabditis elegans, and demonstrated that VB2 level critically impacts food uptake and foraging behavior by regulating specific protease gene expression and intestinal protease activity...
June 1, 2017: ELife
https://www.readbyqxmd.com/read/28559484/finding-the-needle-in-the-haystack-the-use-of-microfluidic-droplet-technology-to-identify-vitamin-secreting-lactic-acid-bacteria
#16
Jun Chen, Mike Vestergaard, Thomas Glasdam Jensen, Jing Shen, Martin Dufva, Christian Solem, Peter Ruhdal Jensen
Efficient screening technologies aim to reduce both the time and the cost required for identifying rare mutants possessing a phenotype of interest in a mutagenized population. In this study, we combined a mild mutagenesis strategy with high-throughput screening based on microfluidic droplet technology to identify Lactococcus lactis variants secreting vitamin B2 (riboflavin). Initially, we used a roseoflavin-resistant mutant of L. lactis strain MG1363, JC017, which secreted low levels of riboflavin. By using fluorescence-activated droplet sorting, several mutants that secreted riboflavin more efficiently than JC017 were readily isolated from the mutagenesis library...
May 30, 2017: MBio
https://www.readbyqxmd.com/read/28552877/gluten-free-flours-from-different-raw-materials-as-the-source-of-vitamin-b1-b2-b3-and-b6
#17
Iga Rybicka, Anna Gliszczynska-Swiglo
Gluten-free (GF) products are those with a natural absence or acceptable level (<20 mg/kg) of gluten. They should be a part of a diet for people with gluten-related disorders, like celiac disease. Recently the popularity of a gluten-free diet (GFD) has risen extremely, because a lot of healthy individuals exclude gluten from their menus. According to the literature data on nutritional deficiencies in the GFD, this trend seems to be risky. This paper describes the nutritional value of 14 flours from different GF raw materials from the aspect of B-group vitamin content (B1, B2, B3, B6)...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/28540578/-complications-and-postoperative-therapeutic-strategies-in-cross-linking
#18
REVIEW
M Kohlhaas
CLINICAL ISSUE: The reduced corneal mechanical stability in keratoconus and similar collagen diseases can lead to a progressive and irregular corneal shape and decrease of visual acuity. DIAGNOSTICS: A progression of keratectatic diseases can be shown with corneal topography. TREATMENT: Keratoconus can be treated by photo-oxidative cross-linking of the corneal collagen. In order to achieve a high absorption of irradiation energy in the cornea, riboflavin at a concentration of 0...
May 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28531791/an-innovative-brioche-enriched-in-protein-and-energy-improves-the-nutritional-status-of-malnourished-nursing-home-residents-compared-to-oral-nutritional-supplement-and-usual-breakfast-farine-project
#19
Virginie Van Wymelbeke, Laurent Brondel, Francis Bon, Isabelle Martin-Pfitzenmeyer, Patrick Manckoundia
BACKGROUND & AIMS: To compare the effects of a 12-week nutritional intervention, in which an innovative protein-and-energy-enriched brioche, an oral nutritional supplement or a usual breakfast were eaten, on food intake and nutritional status in nursing home residents. DESIGN: Three-armed, multicentre, controlled trial. SETTING: Eight nursing homes in Burgundy, France. PARTICIPANTS: Sixty-eight malnourished participants aged between 70 and 99 years old...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28527067/usefulness-of-nutraceuticals-in-migraine-prophylaxis
#20
Florindo D'Onofrio, Simona Raimo, Daniele Spitaleri, Gerardo Casucci, Gennaro Bussone
Several studies have supported the efficacy of complementary and alternative medicine approaches (physical, behavioral and nutraceutical therapies) in the treatment of headache disorders. Nutraceutical treatment consists of taking vitamins, supplements (magnesium, riboflavin, coenzyme Q10, and alpha lipoic acid) and herbal preparations (feverfew and butterbur), and its usage is frequently determined by dissatisfaction with conventional medical therapies. There is a growing body of research on nutraceutical use for migraine prophylaxis...
May 2017: Neurological Sciences
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