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Vitamin B6

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https://www.readbyqxmd.com/read/28436039/nutrient-retention-values-and-cooking-yield-factors-for-three-south-african-lamb-and-mutton-cuts
#1
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
#2
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/28431245/host-microbe-co-metabolism-dictates-cancer-drug-efficacy-in-c-%C3%A2-elegans
#3
Timothy A Scott, Leonor M Quintaneiro, Povilas Norvaisas, Prudence P Lui, Matthew P Wilson, Kit-Yi Leung, Lucia Herrera-Dominguez, Sonia Sudiwala, Alberto Pessia, Peter T Clayton, Kevin Bryson, Vidya Velagapudi, Philippa B Mills, Athanasios Typas, Nicholas D E Greene, Filipe Cabreiro
Fluoropyrimidines are the first-line treatment for colorectal cancer, but their efficacy is highly variable between patients. We queried whether gut microbes, a known source of inter-individual variability, impacted drug efficacy. Combining two tractable genetic models, the bacterium E. coli and the nematode C. elegans, we performed three-way high-throughput screens that unraveled the complexity underlying host-microbe-drug interactions. We report that microbes can bolster or suppress the effects of fluoropyrimidines through metabolic drug interconversion involving bacterial vitamin B6, B9, and ribonucleotide metabolism...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28430025/synthesis-of-dopamine-in-e-coli-using-plasmid-based-expression-system-and-its-marked-effect-on-host-growth-profiles
#4
Arunangshu Das, Anita Verma, Krishna J Mukherjee
L-Dopa and dopamine are important pathway intermediates towards the synthesis of catecholamine like epinephrine and norepinephrine from amino acid L-tyrosine. Dopamine, secreted from dopaminergic nerve cells, serves as an important neurotransmitter. We report the synthesis of dopamine by extending the aromatic amino acid pathway of E.coli DH5α by expression of 4-hydroxyphenylacetate-3-hydrolase (HpaBC) from E.coli and an engineered dopa decarboxylase (DDC) from pig kidney cell. The activity of HpaBC and DDC require 200 µM iron supplementation and 50 µM vitamin B6 respectively as additives to the growth media...
April 21, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28420574/vitamin-supplements-in-type-2-diabetes-mellitus-management-a-review
#5
REVIEW
Mabel Kar-Wai Yan, Hanan Khalil
Type 2 diabetes mellitus (T2DM) is a major public health challenge that affects countries across the world. The use of pharmacological therapy is often limited in some patients due to a loss of effect over time or development of adverse effects such as weight gain or hypoglycaemia. This has prompted searches into the role of non-pharmacological therapies in T2DM. The availability and use of vitamin supplements in developed countries have increased significantly and there is evidence that certain vitamins may have roles in the management of T2DM...
April 12, 2017: Diabetes & Metabolic Syndrome
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
#6
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/28420012/vitamin-b6-responsive-epilepsy-due-to-a-novel-kcnq2-mutation
#7
Kerstin Alexandra Klotz, Johannes R Lemke, Rudolf Korinthenberg, Julia Jacobs
Mutations in KCNQ2, encoding for subunits of potassium channels, are known to cause neonatal epileptic encephalopathy (NEE). Therapeutic options for these children are often limited. Recently, there are indications that some patients with KCNQ2 NEE show seizure response to vitamin B6 (VB6) therapy. We present a young infant with severe KCNQ2 encephalopathy resulting from a novel de novo mutation (c.1023G>C; p.(Gln341His)). In our patient, VB6 responsiveness could be demonstrated clearly by remarkable seizure-response to VB6 therapy and seizure exacerbation to discontinuation of VB6 therapy...
April 18, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28417148/relationship-between-nutritional-factors-and-hip-bone-density-in-individuals-with-chronic-stroke
#8
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/28408540/small-kernel2-encodes-a-glutaminase-in-vitamin-b6-biosynthesis-essential-for-maize-seed-development
#9
Yan-Zhuo Yang, Shuo Ding, Yong Wang, Cui-Ling Li, Yun Shen, Robert Meeley, Donald R McCarty, Bao-Cai Tan
Vitamin B6, an essential co-factor for a range of biochemical reactions and a potent antioxidant, plays important roles in plant growth, development, and stress tolerance. Vitamin B6 deficiency causes embryo lethality in Arabidopsis, but the specific role of vitamin B6 synthesis in endosperm development has not been fully addressed, especially in monocot crops where endosperm constitutes the major portion of the grain. Through molecular characterization of a small kernel2 (smk2) mutant in maize, we reveal that vitamin B6 has differential effects on embryogenesis and endosperm development in maize...
April 13, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28398657/study-exploring-the-effects-of-daily-supplementation-with-400-%C3%AE-g-of-folic-acid-on-the-nutritional-status-of-folate-in-women-of-reproductive-age
#10
Laidy D Arias, Beatriz E Parra, Angélica M Muñoz, Diana L Cárdenas, Tiffany G Duque, Luz M Manjarrés
BACKGROUND: This investigation determines the nutritional state of serum and red blood cell (RBC) folate concentration and their relation with intake of folate, B6 ,and B12 , with serum vitamin B12 , and with genetic variants after provision of 400 μg/day of folic acid for 3 months to a group of 34 Colombian women of reproductive age. METHODS: We evaluated nutrient intake using 24-hr recall, assessing the levels of serum folate, RBC folate, serum B12 , and homocysteine, as well as determining genetic variants of the enzyme MTHFR (C677T and A1298C) and CβS (844ins68pb)...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28391250/confirmation-of-mutations-in-prosc-as-a-novel-cause-of-vitamin-b6-dependent-epilepsy
#11
Barbara Plecko, Markus Zweier, Anaïs Begemann, Deborah Mathis, Bernhard Schmitt, Pasquale Striano, Martina Baethmann, Stella Maria Vari, Francesca Beccaria, Federico Zara, Lisa M Crowther, Pascal Joset, Heinrich Sticht, Sorina Mihaela Papuc, Anita Rauch
Vitamin-B6-dependent epilepsies are a heterogenous group of treatable disorders due to mutations in several genes (ALDH7A1, PNPO, ALPL or ALDH4A1). In neonatal seizures, defects in ALDH7A1 and PNPO explain a major fraction of cases. Very recently biallelic mutations in PROSC were shown to be a novel cause in five families. We identified four further unrelated patients harbouring a total of six different mutations, including four novel disease mutations. Vitamin B6 plasma profiles on pyridoxine did not enable the differentiation of patients with PROSC mutations...
April 8, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28384735/effect-of-baseline-nutritional-status-on-long-term-multivitamin-use-and-cardiovascular-disease-risk-a-secondary-analysis-of-the-physicians-health-study-ii-randomized-clinical-trial
#12
Susanne Rautiainen, J Michael Gaziano, William G Christen, Vadim Bubes, Gregory Kotler, Robert J Glynn, JoAnn E Manson, Julie E Buring, Howard D Sesso
Importance: Long-term multivitamin use had no effect on risk of cardiovascular disease (CVD) in the Physicians' Health Study II. Baseline nutritional status may have modified the lack of effect. Objective: To investigate effect modification by various baseline dietary factors on CVD risk in the Physicians' Health Study II. Design, Setting, and Participants: The Physicians' Health Study II was a randomized, double-blind, placebo-controlled trial testing multivitamin use (multivitamin [Centrum Silver] or placebo daily) among US male physicians...
April 5, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28381340/high-folate-and-low-vitamin-b12-status-during-pregnancy-is-associated-with-gestational-diabetes-mellitus
#13
Jun S Lai, Wei Wei Pang, Shirong Cai, Yung Seng Lee, Jerry K Y Chan, Lynette P C Shek, Fabian K P Yap, Kok Hian Tan, Keith M Godfrey, Rob M van Dam, Yap Seng Chong, Mary F F Chong
BACKGROUND & AIMS: B-vitamins and homocysteine may contribute to the development of gestational diabetes mellitus (GDM), but existing studies are inconsistent. We examined the cross-sectional associations of plasma folate, vitamins B6, B12, and homocysteine concentrations with GDM and glycemia in a sample of multi-ethnic Asian pregnant women. METHODS: Plasma concentrations of folate, vitamins B6, B12, homocysteine and glucose were measured at 26-weeks' gestation in 913 pregnant women...
March 24, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28376200/vitamin-b6-and-cancer-risk-a-field-synopsis-and-meta-analysis
#14
Simone Mocellin, Marta Briarava, Pierluigi Pilati
Background: : Vitamin B6 is involved in many biochemical reactions and might play a role in carcinogenesis. We summarized the evidence linking vitamin B6 to cancer risk. Methods: We conducted a systematic review of both observational and intervention studies investigating the relationship between vitamin B6 intake or blood levels of its bioactive form pyridoxal-5'-phosphate (PLP) and the risk of any type of cancer. Random-effects meta-analysis was used to calculate pooled relative risks (RRs) and their 95% confidence intervals (CIs) across studies for high vs low categories of vitamin intake or PLP levels...
March 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28373711/comparison-of-microrna-expression-profiles-of-kashin-beck-disease-osteoarthritis-and-rheumatoid-arthritis
#15
Wenhong Wu, Awen He, Yan Wen, Xiao Xiao, Jingcan Hao, Feng Zhang, Xiong Guo
Kashin-Beck disease (KBD) is a chronic osteochondropathy with unclear pathogeny. In this study, we compared the microRNA expression profiles of 16 KBD patients, 16 osteoarthritis (OA) patients and 16 rheumatoid arthritis (RA) patients and 16 healthy controls in their blood specimens. miRNAs expression profiling was performed using Exiqon miRCURY LNATM miRNAs Array. miRNAs target genes were predicted using miRror suite. Another independent mRNA expression profile dataset of 20 KBD patients and 15 healthy controls were integrated with the miRNA expression profiles of KBD...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28371806/burning-mouth-syndome-and-vitamin-b6
#16
Wisam Dieb, Yves Boucher
No abstract text is available yet for this article.
March 24, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28367952/b-vitamin-supplementation-mitigates-effects-of-fine-particles-on-cardiac-autonomic-dysfunction-and-inflammation-a-pilot-human-intervention-trial
#17
Jia Zhong, Letizia Trevisi, Bruce Urch, Xinyi Lin, Mary Speck, Brent A Coull, Gary Liss, Aaron Thompson, Shaowei Wu, Ander Wilson, Petros Koutrakis, Frances Silverman, Diane R Gold, Andrea A Baccarelli
Ambient fine particle (PM2.5) pollution triggers acute cardiovascular events. Individual-level preventions are proposed to complement regulation in reducing the global burden of PM2.5-induced cardiovascular diseases. We determine whether B vitamin supplementation mitigates PM2.5 effects on cardiac autonomic dysfunction and inflammation in a single-blind placebo-controlled crossover pilot trial. Ten healthy adults received two-hour controlled-exposure-experiment to sham under placebo, PM2.5 (250 μg/m(3)) under placebo, and PM2...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28367454/effects-of-vitamin-b6-deficiency-on-the-composition-and-functional-potential-of-t-cell-populations
#18
Bingjun Qian, Shanqi Shen, Jianhua Zhang, Pu Jing
The immune system is critical in preventing infection and cancer, and malnutrition can weaken different aspects of the immune system to undermine immunity. Previous studies suggested that vitamin B6 deficiency could decrease serum antibody production with concomitant increase in IL4 expression. However, evidence on whether vitamin B6 deficiency would impair immune cell differentiation, cytokines secretion, and signal molecule expression involved in JAK/STAT signaling pathway to regulate immune response remains largely unknown...
2017: Journal of Immunology Research
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
#19
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
https://www.readbyqxmd.com/read/28346362/nutrition-assessment-of-b-vitamins-in-highly-active-and-sedentary-women
#20
Kathleen Woolf, Nicole L Hahn, Megan M Christensen, Amanda Carlson-Phillips, Christine M Hansen
BACKGROUND: Female athletes and active women require adequate nutrition for optimal health and performance. Nutrition assessments are needed to identify potential nutrients of concern. Folate, vitamin B6, and vitamin B12 function in important pathways used during physical activity and female athletes may be at risk for poor status of these micronutrients. This cross-sectional study described a comprehensive nutrition assessment of the B-vitamins (folate, vitamin B6, and vitamin B12) using both dietary (food and dietary supplements) and biochemical assessments among highly active and sedentary women...
March 26, 2017: Nutrients
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