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B vitamin

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https://www.readbyqxmd.com/read/28636252/influence-of-analyzed-lubricant-volumes-on-the-amount-and-characteristics-of-generated-wear-particles-from-three-different-types-of-polyethylene-liner-materials
#1
Jana Markhoff, Carmen Zietz, Christian Fabry, Gerhard Fulda, Rainer Bader
The articulating components of artificial joints consist mainly of metals, ceramics, or polymers. Resulting abrasive wear particles can promote osteolysis and aseptic loosening of the endo-prosthetic implants. Ultra-high-molecular-weight-polyethylene is the material used most for bearing couples in total hip replacement. In the present study, three types of polyethylene (PE) liners varying in material composition, i.e., (1) conventional PE (C-PE), (2) sequentially cross-linked PE (SX-PE), (3) cross-linked PE blended with vitamin E (EX-PE) articulating with two types of femoral heads were used...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28636168/improved-hemodialysis-with-hemocompatible-polyethersulfone-hollow-fiber-membranes-in-vitro-performance
#2
Surendra Kumar Verma, Akshay Modi, Atul Kumar Singh, Rohit Teotia, Jayesh Bellare
We show that addition of nanozeolite (NZ) and vitamin E D-α-Tocopherol polyethylene glycol succinate (TPGS or T) considerably improves the performance of polyethersulfone (PES or P) hollow fiber membrane (HFM) for hemodialysis. Nanocomposite HFMs were manufactured using PES as a polymer, TPGS as an additive and NZ as a filler to give a composite membrane called PT-NZ. HFMs were spun by dry-wet spinning principle based on liquid-liquid phase separation. TPGS and NZ were successfully incorporated in HFMs, as confirmed by EDX elemental mapping...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28635642/lack-of-association-between-serum-vitamin-b%C3%A2-vitamin-b12-and-vitamin-d-levels-with-different-types-of-glaucoma-a-systematic-review-and-meta-analysis
#3
Shengjie Li, Danhui Li, Mingxi Shao, Wenjun Cao, Xinghuai Sun
Although vitamins play a major role in health, and their deficiency may be linked to symptoms of optic-nerve dysfunction, the association between serum vitamin levels and glaucoma in humans remains controversial. In this study, articles in the PubMed, Web of Science, and EMBASE databases were searched up to 25March 2017. Nine studies on primary open-angle glaucoma (POAG), four studies on normal tension glaucoma (NTG), and six studies on exfoliative glaucoma (EXG) were retrieved. The combined results showed no differences in the levels of serum vitamin B₆ between POAG (p = 0...
June 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28630695/newly-formulated-protein-quality-enhanced-extruded-sorghum-cowpea-corn-soya-sugar-and-oil-containing-fortified-blended-foods-lead-to-adequate-vitamin-a-and-iron-outcomes-and-improved-growth-compared-with-non-extruded-csb-in-rats
#4
Nicole M Delimont, Nicole M Fiorentino, Alexander B Opoku-Acheampong, Michael V Joseph, Qingbin Guo, Sajid Alavi, Brian L Lindshield
Corn and soyabean micronutrient-fortified-blended foods (FBF) are commonly used for food aid. Sorghum and cowpeas have been suggested as alternative commodities because they are drought tolerant, can be grown in many localities, and are not genetically modified. Change in formulation of blends may improve protein quality, vitamin A and Fe availability of FBF. The primary objective of this study was to compare protein efficiency, Fe and vitamin A availability of newly formulated extruded sorghum-, cowpea-, soya- and corn-based FBF, along with a current, non-extruded United States Agency for International Development (USAID) corn and soya blend FBF (CSB+)...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/28629584/association-of-vitamin-d-intake-and-serum-levels-with-fertility-results-from-the-lifestyle-and-fertility-study
#5
June L Fung, Terryl J Hartman, Rosemary L Schleicher, Marlene B Goldman
OBJECTIVE: To evaluate the role of vitamin D intake and serum levels on conception of clinical pregnancy and live birth. DESIGN: Prospective cohort study. SETTING: Academic medical centers. PATIENT(S): Healthy, nulliparous women, age 18-39 years, and their male partners. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Clinical pregnancy and live birth were compared between those who did or did not meet the vitamin D estimated average requirement (EAR) intake (10 μg/d) and with serum 25-hydroxyvitamin D (25(OH)D) considered at risk for inadequacy or deficiency (<50 nmol/L) or sufficient (≥50 nmol/L)...
June 16, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28628687/the-infatuation-with-biotin-supplementation-is-there-truth-behind-its-rising-popularity-a-comparative-analysis-of-clinical-efficacy-versus-social-popularity
#6
Teo Soleymani, Kristen Lo Sicco, Jerry Shapiro
<p>Biotin, also known as Vitamin B7 or vitamin H, is a water-soluble B vitamin that acts as an essential cofactor for several carboxylases involved in the cellular metabolism of fatty acids, amino acids, and gluconeogenesis. Although there exists an incredible amount of social media hype and market advertising touting its efficacy for the improvement of hair quantity and quality, biotin's efficacy for hair remains largely unsubstantiated in scientific literature. We reviewed all pertinent scientific literature regarding the efficacy of biotin supplementation for hair growth and quality improvement, and we also investigated its popularity in society defined as a function of market analytics...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28628360/genetic-risk-factors-for-folate-responsive-neural-tube-defects
#7
Anne M Molloy, Faith Pangilinan, Lawrence C Brody
Neural tube defects (NTDs) are the most severe congenital malformations of the central nervous system. The etiology is complex, with both genetic and environmental factors having important contributions. Researchers have known for the past two decades that maternal periconceptional use of the B vitamin folic acid can prevent many NTDs. Though this finding is arguably one of the most important recent discoveries in birth defect research, the mechanism by which folic acid exerts this benefit remains unknown. Research to date has focused on the hypothesis that an underlying genetic susceptibility interacts with folate-sensitive metabolic processes at the time of neural tube closure...
June 19, 2017: Annual Review of Nutrition
https://www.readbyqxmd.com/read/28627191/-associations-between-insulin-resistance-and-three-b-vitamins-in-european-adolescents-the-helena-study
#8
Iris Iglesia, Marcela González-Gross, Inge Huybrechts, Pilar De Miguel-Etayo, Denes Molnar, Yannis Manios, Kurt Widhalm, Frédéric Gottrand, Anthony Kafatos, Asensión Marcos, Alejandro De la O Puerta, Catherine Leclercq, Stefaan De Henauw, Peter Stehle, Mathilde Kersting, Theodora Mouratidou, Luis Alberto Moreno
OBJECTIVE: To assess whether adolescents with high body mass index (BMI), or fat mass index (FMI), in combination with insulin resistance (assessed with the Homeostatic Model Assessment [HOMA] index), had also lower blood vitamin B6, folate and vitamin B12 concentrations. METHODS AND MATERIALS: Six hundred and fifteen adolescents from the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) study, with data on B-vitamins (both intakes and status), and BMI, FMI, HOMA, were selected...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28627057/vitamin-d-metabolism-in-growing-pigs-influence-of-uvb-irradiation-and-dietary-vitamin-d-supply-on-calcium-homeostasis-its-regulation-and-bone-metabolism
#9
E Kolp, M R Wilkens, W Pendl, B Eichenberger, A Liesegang
The aim of this study was to prove whether pigs are able to synthesize vitamin D (vitD) in the skin and to investigate the influence of ultraviolet irradiation (UVB) on vitD status and calcium (Ca) homeostasis of growing pigs. Thirty-two 11-week-old pigs were kept without access to sunlight and divided into four groups receiving the following treatment in a 2 × 2 factorial design: (i) UVB irradiation or not and (ii) vitD in feed or not. Blood, urine and faeces were sampled every third week. In serum, vitD metabolites, Ca, phosphorus (P), magnesium (Mg) and bone markers were analysed...
June 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28625322/effect-of-b-vitamins-from-diet-on-hypertension
#10
Ruru Liu, Baibing Mi, Yaling Zhao, Qiang Li, Hong Yan, Shaonong Dang
BACKGROUND: In western populations, a higher level of dietary B vitamins intake has been associated with a lower risk of hypertension. However, data in Chinese is limited, whose B vitamins consumption is low and rates of hypertension are high. AIM OF THE STUDY: To investigate whether the three B vitamins are associated with hypertension in rural Chinese. METHODS: Cross-sectional survey among 2241 rural Chinese aged 18-80 years was conducted in northwestern China in 2010...
February 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28622535/vitamin-d-mediates-the-relationship-between-placental-cathelicidin-and-group-b-streptococcus-colonization-during-pregnancy
#11
Christine C Akoh, Eva K Pressman, Corrie M Whisner, Carrie Thomas, Chang Cao, Tera Kent, Elizabeth Cooper, Kimberly O O'Brien
Vitamin D is thought to modulate innate immune responses, and recent studies have highlighted the autocrine and paracrine functions of vitamin D in the placenta. Our objective was to determine the relationship between maternal vitamin D status and placental antimicrobial peptide (AMP) expression in a group of racially and ethnically diverse pregnant adolescents. In this study, 158 pregnant adolescents were recruited from the Rochester Adolescent Maternity Program (RAMP) in Rochester, NY. Maternal serum concentrations of the vitamin D biomarkers, 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D), were measured at mid-gestation (∼26 weeks) and at delivery...
June 6, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28621228/diagnostic-performance-of-tumor-markers-afp-and-pivka-ii-in-chinese-hepatocellular-carcinoma-patients
#12
Shujing Huang, Feifei Jiang, Ying Wang, Yanhua Yu, Siqian Ren, Xiaowei Wang, Peng Yin, Jinli Lou
Alpha-fetoprotein is an effective biomarker as an aid in hepatocellular carcinoma detection in many countries. However, alpha-fetoprotein has its limitations, especially in early hepatocellular carcinoma diagnosis. Protein induced by vitamin K absence or antagonist-II is another biomarker that is used for hepatocellular carcinoma detection. The aim of this study is to compare the diagnostic performance of alpha-fetoprotein and protein induced by vitamin K absence or antagonist-II alone and in combination to explore improving biomarker performance as an aid in early hepatocellular carcinoma detection...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28620818/effects-of-atorvastatin-and-simvastatin-on-oxidative-stress-in-diet-induced-hyperhomocysteinemia-in-wistar-albino-rats-a-comparative-study
#13
T Nikolic, V Zivkovic, I Srejovic, I Stojic, N Jeremic, J Jeremic, K Radonjic, S Stankovic, R Obrenovic, D Djuric, V Jakovljevic
Considering the well-known antioxidant properties of statins, it seems important to assess their impact on major markers of oxidative stress (superoxide anion radical, nitric oxide, and index of lipid peroxidation) to compare the antioxidative potentials of atorvastatin and simvastatin during the different degrees of hyperhomocysteinemia (HHcy) in rats. This study was conducted on adult male Wistar albino rats (n = 90; 4 weeks old; 100 ± 15 g body mass) in which HHcy was achieved by dietary manipulation...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28620422/special-considerations-for-vitamin-d-in-the-south-asian-population-in-the-uk
#14
REVIEW
Nicola M Lowe, Issak Bhojani
The human requirement for vitamin D is achieved primarily through the synthesis of this prehormone in the skin during exposure to ultraviolet B (UVB) radiation, with only a minor contribution from the diet, year round. Achieving optimal vitamin D status is therefore largely dependent upon adequate exposure of the skin to sunlight, however, the length of exposure required varies with latitude and season, and is also dependent upon skin pigmentation, with darker skin requiring greater exposure than fair skin due to the protective effects of melanin against UVB radiation...
June 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28620394/vitamin-d-counteracts-mycobacterium-tuberculosis-induced-cathelicidin-downregulation-in-dendritic-cells-and-allows-th1-differentiation-and-ifn%C3%AE-secretion
#15
Anna K O Rode, Martin Kongsbak, Marie M Hansen, Daniel Villalba Lopez, Trine B Levring, Anders Woetmann, Niels Ødum, Charlotte M Bonefeld, Carsten Geisler
Tuberculosis (TB) presents a serious health problem with approximately one-third of the world's population infected with Mycobacterium tuberculosis in a latent state. Experience from the pre-antibiotic era and more recent clinical studies have established a beneficial role of sunlight and vitamin D in patients with TB. At the same time, experimental data have shown that Th1 cells through production of IFNγ are crucial for cathelicidin release by macrophages, bacterial killing, and containment of M. tuberculosis in granulomas...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28620126/impact-of-phosphoinositide-3-kinase-and-vitamin-d3-nuclear-receptor-single-nucleotide-polymorphisms-on-the-outcome-of-malignant-melanoma-patients
#16
Francesca Morgese, Davide Soldato, Silvia Pagliaretta, Riccardo Giampieri, Donatella Brancorsini, Mariangela Torniai, Silvia Rinaldi, Agnese Savini, Azzurra Onofri, Marina Scarpelli, Rossana Berardi
BACKGROUND: Several studies associating single nucleotide polymorphisms (SNPs) frequencies with tumors outcome have been conducted, nevertheless malignant melanoma literature data are inconclusive.Therefore we evaluate the impact of different genotypes for phosphoinositide-3-kinase (PI3K) and vitamin D3 nuclear receptor (VDR) SNPs on melanoma patients' outcome. MATERIALS AND METHODS: Genomic DNA of 88 patients was extracted from blood and tumor samples. SNPs were determined by PCR using TaqMan assays...
May 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28620062/urine-biomarkers-to-predict-response-to-lupus-nephritis-therapy-in-children-and-young-adults
#17
Hermine I Brunner, Michael R Bennett, Gaurav Gulati, Khalid Abulaban, Marisa S Klein-Gitelman, Stacy P Ardoin, Lori B Tucker, Kelly A Rouster-Stevens, David Witte, Jun Ying, Prasad Devarajan
OBJECTIVE: To delineate urine biomarkers that forecast response to therapy of lupus nephritis (LN). METHODS: Starting from the time of kidney biopsy, patients with childhood-onset systemic lupus erythematosus who were diagnosed with LN were studied serially. Levels of 15 biomarkers were measured in random spot urine samples, including adiponectin, α-1-acid glycoprotein (AGP), ceruloplasmin, hemopexin, hepcidin, kidney injury molecule 1, monocyte chemotactic protein-1, lipocalin-like prostaglandin D synthase (LPGDS), transforming growth factor-β (TGF-β), transferrin, and vitamin D binding protein (VDBP)...
June 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28619953/solar-ultraviolet-b-exposure-and-global-variation-in-tuberculosis-incidence-an-ecological-analysis
#18
Tjarda M Boere, Douwe H Visser, A Marceline van Furth, Paul Lips, Frank G J Cobelens
Epidemiological evidence supports vitamin D deficiency as a risk factor for tuberculosis. Differences in solar ultraviolet B (UV-B) exposure, the major source of vitamin D, might therefore partially explain global variation in tuberculosis incidence.In a global country-based ecological study, we explored the correlation between vitamin D-proxies, such as solar UV-B exposure, and other relevant variables with tuberculosis incidence, averaged over the period 2004-2013.Across 154 countries, annual solar UV-B exposure was associated with tuberculosis incidence...
June 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28619429/vitamin-d-and-multiple-sclerosis-an-update
#19
REVIEW
Charles Pierrot-Deseilligny, Jean-Claude Souberbielle
The most recent findings linking exposure to sun and vitamin D insufficiency to multiple sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles, hypovitaminosis D is widespread in temperate countries. Numerous epidemiological studies have strongly suggested that sunshine and vitamin D insufficiency contributes to MS risk in these countries. Moreover, several large genetic studies in MS patients have recently stated unequivocally that diverse abnormalities involving vitamin D metabolism are related to the risk of the disease...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28618986/inflammatory-and-oxidative-stress-markers-as-indicator-of-atherogenesis-in-rats-antioxidants-as-preventive-pharmacological-methods
#20
Maria Del Carmen Baez, Mariana Tarán, María de La Paz Scribano, Ariel Balceda, Carla Buonanotte, Sergio Blencio, Ismael Fonseca, Monica Moya
The oxidative process in atherogenesis generated by proinflammatory induction and response to antioxidants vitamins in an experimental model were analyzed. METHODS: Male rats were used: (A)Control, (B)Control+vitamin E plus C, (C)Hyperfibrinogenemia and (D)Hyperfibrinogenemia+vitamins E plus C. Hyperfibrinogenemia induced by daily injection of adrenaline (0.1mg/day/rat) for 120 days. TREATMENT: 3.42 mg/kg of vitamin E plus 2.14 mg/kg of vitamin C, fifteen days after induction...
June 16, 2017: Anti-inflammatory & Anti-allergy Agents in Medicinal Chemistry
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