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Vitamin B2

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https://www.readbyqxmd.com/read/28527067/usefulness-of-nutraceuticals-in-migraine-prophylaxis
#1
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
https://www.readbyqxmd.com/read/28526582/mait-cells-a-tailor-made-mate-in-the-ancient-battle-against-infectious-diseases
#2
REVIEW
Marcela de Lima Moreira, Moriya Tsuji, Alexandra Jane Corbett, Márcio Sobreira Silva Araújo, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho, Vanessa Peruhype-Magalhães, Jordana Grazziela Coelho-Dos-Reis
It has been almost two decades since the discovery of mucosal-associated invariant T (MAIT)-cells. Several advances in the field have been made such as the discovery of the antimicrobial activity of MAIT-cells, the abundance of these cells in human mucosa and in liver and the discovery of ligands able to bind MR1 and activate MAIT-cells. MAIT-cells are a unique subset of innate-like T-cells that express a canonical T-cell receptor with the alpha chain containing hAV7S2 and AJ33 in humans (TCRVα7.2Jα33) and respond to bacterial/fungus vitamin B2 metabolites by an MR1-dependent pathway...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28515315/the-c-terminal-peptide-of-aquifex-aeolicus-riboflavin-synthase-directs-encapsulation-of-native-and-foreign-guests-by-a-cage-forming-lumazine-synthase
#3
Yusuke Azuma, Reinhard Zschoche, Donald Hilvert
Encapsulation of specific enzymes in self-assembling protein cages is a hallmark of bacterial compartments that function as counterparts to eukaryotic organelles. The cage-forming enzyme lumazine synthase (LS) from Bacillus subtilis (BsLS), for example, encapsulates riboflavin synthase (BsRS), enabling channeling of lumazine from the site of its generation to the site of its conversion to vitamin B2. Elucidating the molecular mechanisms underlying the assembly of these supramolecular complexes could help inform new approaches for metabolic engineering, nanotechnology, and drug delivery...
May 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28502425/resonance-energy-transfer-based-electrochemiluminescence-and-fluorescence-sensing-of-riboflavin-using-graphitic-carbon-nitride-quantum-dots
#4
Huan Wang, Qin Ma, Yanfeng Wang, Caihe Wang, Dongdong Qin, Duoliang Shan, Jing Chen, Xiaoquan Lu
Graphitic carbon nitride quantum dots (g-CNQDs) are rarely used in the field of electrochemiluminescence. In this paper, g-CNQDs have a strong and stable electrochemiluminescence (ECL) signal generated in the presence of co-reactant K2S2O8. The ECL signal of g-CNQDs was quenched by the mechanism of resonance energy transfer (RET) between donor g-CNQDs and receptor riboflavin (RF) that is proved by UV-vis absorption spectroscopy, electrochemiluminescence and fluorescence emission spectroscopy analysis technology...
June 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28501542/metabolite-profile-of-koji-amazake-and-its-lactic-acid-fermentation-product-by-lactobacillus-sakei-uonuma
#5
Yoshifumi Oguro, Toshikazu Nishiwaki, Ryota Shinada, Kazuya Kobayashi, Atsushi Kurahashi
The koji amazake is a traditional sweet Japanese beverage. It has been consumed for over a thousand years in Japan; nonetheless, little is yet known of the ingredients in koji amazake. Therefore, this study aimed to analyze the metabolites of koji amazake using a metabolomics approach. Additionally, we reformed the flavor of koji amazake by lactic acid fermentation (LAF-amazake) using Lactobacillus sakei UONUMA, which was isolated from snow caverns. The purpose of this article is to identify the ingredients in these beverages...
May 10, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28494372/separation-and-preconcentration-of-riboflavin-from-human-plasma-using-polythionine-coated-magnetite-hydroxyapatite-nanocomposite-prior-to-analysis-by-surfactant-enhanced-fluorimetry
#6
Leila Farzin, Mojtaba Shamsipur
The exploration of novel adsorption properties of conductive polymers based on hybridization with biocompatible nanomaterials receives an increasing interest. In this regard, hydroxyapatite (HA) bioceramic is of critical importance mainly owing to its facile synthesis, high surface area, economic and low toxicity in biological environments. In this work, we first prepared and characterized a magnetite/hydroxyapatite (Fe3O4/HA) nanocomposite using the bio-waste chicken eggshell via an attractive green way that involved low cost and irrespective of toxicity...
May 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28482542/application-of-functionalized-multi-walled-carbon-nanotubes-supporting-cuprous-oxide-and-silver-oxide-composite-catalyst-on-copper-substrate-for-simultaneous-detection-of-vitamin-b2-vitamin-b6-and-ascorbic-acid
#7
Apinya Puangjan, Suwan Chaiyasith, Wipawee Taweeporngitgul, Jeerunda Keawtep
A new electrochemical sensor was fabricated from chemically functionalized multiwall carbon nanotubes and electrochemically deposited cuprous oxide and silver oxide composite over the nanotubes on copper substrate. The structural, functional, morphological, electrical properties and elemental composition of the composite were characterized by X-ray diffractometry, Fourier transform infrared spectroscopy, field transmission electron microscopy, electrochemical impedance spectroscopy and energy dispersive X-ray spectroscopy...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28479390/arsenic-metabolism-and-one-carbon-metabolism-at-low-moderate-arsenic-exposure-evidence-from-the-strong-heart-study
#8
Miranda Jones Spratlen, Mary V Gamble, Maria Grau-Perez, Chin-Chi Kuo, Lyle G Best, Joseph Yracheta, Kevin Francesconi, Walter Goessler, Yasmin Mossavar-Rahmani, Meghan Hall, Jason G Umans, Amanda Fretts, Ana Navas-Acien
B-vitamins involved in one-carbon metabolism (OCM) can affect arsenic metabolism efficiency in highly arsenic exposed, undernourished populations. We evaluated whether dietary intake of OCM nutrients (including vitamins B2, B6, folate (B9), and B12) was associated with arsenic metabolism in a more nourished population exposed to lower arsenic than previously studied. Dietary intake of OCM nutrients and urine arsenic was evaluated in 405 participants from the Strong Heart Study. Arsenic exposure was measured as the sum of iAs, monomethylarsonate (MMA) and dimethylarsenate (DMA) in urine...
May 4, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28476156/nutritional-deficiencies-in-homeless-persons-with-problematic-drinking-a-systematic-review
#9
REVIEW
Sharea Ijaz, Joni Jackson, Helen Thorley, Katie Porter, Clare Fleming, Alison Richards, Adrian Bonner, Jelena Savović
BACKGROUND: A significant proportion of homeless people drink alcohol excessively and this can lead to malnutrition and consequent medical problems. The aim of this review was to assess the evidence on the range of nutritional deficiencies in the homeless problem-drinking populations. METHODS: We conducted a comprehensive search of nine scientific literature databases and 13 grey literature sources. We included studies of any design that included homeless population with problem-drinking and reported measures of nutritional deficiencies in urine or blood...
May 5, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28458291/similarities-of-water-soluble-vitamin-components-among-non-prescription-pharmaceutical-vitamin-products-generally-available-on-the-domestic-market
#10
Keiichiro Suzuki, Moeko Kojina, Tetsuya Aiba
 Similarities among non-prescription pharmaceutical vitamin products generally available in community pharmacies were examined based on their vitamin components, and a chart was constructed to differentiate products to assist in appropriate product choice. In the analysis of the similarities, two hundred and seventy-six data entries on vitamin products were extracted from the database on the package inserts of the pharmaceutical products provided by the Pharmaceuticals and Medical Devices Agency, and they were reviewed for the amounts of vitamins they contained, in which the B vitamins, or vitamin B1, B2, B6, B12, and niacin, were considered as well as vitamins C and E...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28436039/nutrient-retention-values-and-cooking-yield-factors-for-three-south-african-lamb-and-mutton-cuts
#11
Salomina M van Heerden, Phillip E Strydom
BACKGROUND: Nutrient content of raw and cooked foods is important for formulation healthy diets. The retention of nutrients during cooking can be influenced by various factors including animal age, carcass characteristics and cooking method and these factors are often unique to specific countries. We studied the effects of animal age (lamb and mutton), carcass cut (shoulder, loin and leg) combined with cooking method (moist-heat and dry-heat) on yield and nutrient retention of selected nutrients of South African sheep carcasses...
April 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28436021/burning-mouth-syndrome-results-of-screening-tests-for-vitamin-and-mineral-deficiencies-thyroid-hormone-and-glucose-levels-experience-at-mayo-clinic-over-a-decade
#12
Claudia S Morr Verenzuela, Mark D P Davis, Alison J Bruce, Rochelle R Torgerson
BACKGROUND: Burning mouth syndrome (BMS) is a disorder characterized by chronic mouth pain in the absence of objective clinical abnormalities. Vitamin or mineral deficiencies may have a role in BMS, but data regarding the prevalence and relevance of hematinic deficiencies are conflicting. We aimed to determine the frequency of specific laboratory abnormalities in patients with BMS. METHODS: We retrospectively reviewed the results of screening blood tests in patients with BMS at our institution between January 2003 and December 2013...
April 23, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28434876/dual-targeting-small-molecule-inhibitors-of-the-staphylococcus-aureus-fmn-riboswitch-disrupt-riboflavin-homeostasis-in-an-infectious-setting
#13
Hao Wang, Paul A Mann, Li Xiao, Charles Gill, Andrew M Galgoci, John A Howe, Artjohn Villafania, Christopher M Barbieri, Juliana C Malinverni, Xinwei Sher, Todd Mayhood, Megan D McCurry, Nicholas Murgolo, Amy Flattery, Matthias Mack, Terry Roemer
Riboswitches are bacterial-specific, broadly conserved, non-coding RNA structural elements that control gene expression of numerous metabolic pathways and transport functions essential for cell growth. As such, riboswitch inhibitors represent a new class of potential antibacterial agents. Recently, we identified ribocil-C, a highly selective inhibitor of the flavin mononucleotide (FMN) riboswitch that controls expression of de novo riboflavin (RF, vitamin B2) biosynthesis in Escherichia coli. Here, we provide a mechanistic characterization of the antibacterial effects of ribocil-C as well as of roseoflavin (RoF), an antimetabolite analog of RF, among medically significant Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus faecalis...
May 18, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28420530/rapid-determination-of-the-various-native-forms-of-vitamin-b6-and-b2-in-cow-s-milk-using-ultra-high-performance-liquid-chromatography
#14
A Schmidt, M G Schreiner, H K Mayer
As the formation of pyridoxal phosphate, the active cofactor of vitamin B6, is dependent on riboflavin 5-phosphate, we propose a fast and simple ultra-high performance liquid chromatography method for the simultaneous determination of the native B6 vitamers pyridoxal, pyridoxine, pyridoxamine, their mono phosphorus esters and 4-pyridoxic acid as well as vitamin B2 as riboflavin and its phosphorus ester riboflavin 5-phosphate in milk. Separation was achieved under 6.0min by reversed-phase and pH gradient elution...
April 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28417148/relationship-between-nutritional-factors-and-hip-bone-density-in-individuals-with-chronic-stroke
#15
Samuel K Y Li, Mabel M P Wan, Frankie P L Siu, Susan Chung, Marco Y C Pang
The aim of this study was to investigate the relationship between dietary habits and hip bone health in community-dwelling individuals with chronic stroke. The usual dietary intake of 94 individuals with chronic stroke (30 women, mean age: 59.0 years) was assessed by a 3-day food record within a single week. Dual-energy X-ray absorptiometry was used to measure bone mineral density (BMD) at both hips. The results showed that low hip bone mass was found in 59 and 50 of the participants on the affected and unaffected side, respectively...
April 17, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28415481/modeling-of-drug-release-behavior-of-ph-and-temperature-sensitive-poly-nipaam-co-aac-ipn-hydrogels-using-response-surface-methodology-and-artificial-neural-networks
#16
Sanogo Brahima, Cihangir Boztepe, Asim Kunkul, Mehmet Yuceer
An interpenetrated polymer network (IPN) poly(NIPAAm-co-AAc) hydrogel was synthesized by two polymerization method: emulsion and solution polymerization. The pH- and temperature-sensitive hydrogel was loaded by swelling with riboflavin drug, a B2 vitamin. The release of riboflavin as a function of time has been achieved under different pH and temperature environments. The determination of experimental conditions and the analysis of drug delivery results were achieved using response surface methodology (RSM)...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414075/vitamin-b2-deficiency-enhances-the-pro-inflammatory-activity-of-adipocyte-consequences-for-insulin-resistance-and-metabolic-syndrome-development
#17
Agnieszka Irena Mazur-Bialy, Ewa Pocheć
AIMS: Adipose tissue is an endocrine organ important for regulation of such physiological processes as energy metabolism or lipids homeostasis. In an obesity state, it participates in the induction of chronic systemic inflammation accompanied by pro-inflammatory cytokines and fatty acid elevation. For this reasons, adipose tissue is involved in, e.g., insulin resistance, type 2 diabetes or hyperlipidemia development. In our previous study, we have shown that riboflavin deficiency induces a pathological pro-inflammatory response of macrophages, the main component of adipose tissue...
June 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28407967/molecular-characterization-of-an-unauthorized-genetically-modified-bacillus-subtilis-production-strain-identified-in-a-vitamin-b2-feed-additive
#18
Valentina Paracchini, Mauro Petrillo, Ralf Reiting, Alexandre Angers-Loustau, Daniela Wahler, Andrea Stolz, Birgit Schönig, Anastasia Matthies, Joachim Bendiek, Dominik M Meinel, Sven Pecoraro, Ulrich Busch, Alex Patak, Joachim Kreysa, Lutz Grohmann
Many food and feed additives result from fermentation of genetically modified (GM) microorganisms. For vitamin B2 (riboflavin), GM Bacillus subtilis production strains have been developed and are often used. The presence of neither the GM strain nor its recombinant DNA is allowed for fermentation products placed on the EU market as food or feed additive. A vitamin B2 product (80% feed grade) imported from China was analysed. Viable B. subtilis cells were identified and DNAs of two bacterial isolates (LHL and LGL) were subjected to three whole genome sequencing (WGS) runs with different devices (MiSeq, 454 or HiSeq system)...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28406895/the-superfamily-keeps-growing-identification-in-trypanosomatids-of-ribj-the-first-riboflavin-transporter-family-in-protists
#19
Darío E Balcazar, María Cristina Vanrell, Patricia S Romano, Claudio A Pereira, Fernando A Goldbaum, Hernán R Bonomi, Carolina Carrillo
BACKGROUND: Trypanosomatid parasites represent a major health issue affecting hundreds of million people worldwide, with clinical treatments that are partially effective and/or very toxic. They are responsible for serious human and plant diseases including Trypanosoma cruzi (Chagas disease), Trypanosoma brucei (Sleeping sickness), Leishmania spp. (Leishmaniasis), and Phytomonas spp. (phytoparasites). Both, animals and trypanosomatids lack the biosynthetic riboflavin (vitamin B2) pathway, the vital precursor of flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) cofactors...
April 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28361748/erythrocyte-concentrations-of-b1-b2-b6-but-not-plasma-c-and-e-are-reliable-indicators-of-nutrition-status-in-the-presence-of-systemic-inflammation
#20
Rawia A Ghashut, Donald C McMillan, John Kinsella, Dinesh Talwar
BACKGROUND & AIM: There is increasing evidence that the plasma concentration of vitamin D, carotenoids, zinc and selenium are associated with the magnitude of the systemic inflammatory response. In order to examine whether other vitamins may be affected and whether red cell concentrations are less affected by systemic inflammation the aim of the present study was to examine the effect of the systemic inflammatory response on red cell measurements of vitamins B1, B2 and B6, and plasma concentration of vitamin C and E in a large cohort of patients referred for a nutritional screen...
February 2017: Clinical Nutrition ESPEN
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