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A F Remacha et al.
Annals of hematology, 93(4), 565-569 (2013-09-24)
Plasma holotranscobalamin (holoTC) transports active cobalamin. Decreased levels of holoTC have been considered to be the earliest marker of cobalamin (Cbl) deficiency. In this work, holoTC was evaluated in low or borderline serum Cbl (LB12) and a concordance analysis was
Illuminating the black box of B12 biosynthesis.
Harry A Dailey
Proceedings of the National Academy of Sciences of the United States of America, 110(37), 14823-14824 (2013-08-27)
A Bøyum et al.
Scandinavian journal of immunology, 80(6), 390-397 (2014-10-28)
The homeostatic control of the redox system (the redoxome) in mammalian cells depends upon a large number of interacting molecules, which tend to buffer the electronegativity of cells against oxidants or reductants. Some of these components kill - at high
Neelam Chhillar et al.
Annals of Indian Academy of Neurology, 17(3), 308-312 (2014-09-16)
Changes in lifestyle habits such as diet modification or supplementation have been indicated as probable protective factors for a number of chronic conditions including Alzheimer's disease (AD). With this background, we aim to hypothesize that whether C677T polymorphism of methylenetetrahydrofolate
Mattias Johansson et al.
Journal of the National Cancer Institute, 106(12), doi:10-doi:10 (2014-11-08)
The etiology of renal cell carcinoma (RCC) is only partially understood, but a metabolic component appears likely. We investigated biomarkers of one-carbon metabolism and RCC onset and survival. The European Prospective Investigation into Cancer and Nutrition (EPIC) recruited 385747 participants
Martin Risch et al.
BMC geriatrics, 15, 82-82 (2015-07-15)
The vitamin B12 and folate status in nonanaemic healthy older persons needs attention the more so as decrease in levels may be anticipated from reduced haematinic provision and/or impaired intestinal uptake. A total of 1143 subjectively healthy Swiss midlands participants
Katherine R Heal et al.
Rapid communications in mass spectrometry : RCM, 28(22), 2398-2404 (2014-10-11)
Vitamin B(12) is an essential nutrient for more than half of surveyed marine algae species, but methods for directly measuring this important cofactor in seawater are limited. Current mass spectrometry methods do not quantify all forms of B(12), potentially missing
Sylwester Kurcoń et al.
The Journal of organic chemistry, 78(8), 4115-4122 (2013-04-03)
Heptamethyl cobyrinate was transformed into hexamethyl 8-nor-cobyrinate. The crucial step involved the synthesis of new, vitamin B12 derived cobryketone via palladium-catalyzed cleavage of the sp(3)-sp(3) carbon-carbon bond with the liberation of the ketone. The replacement of sp(3) carbon atom with
Nikita L van der Zwaluw et al.
Neurology, 83(23), 2158-2166 (2014-11-14)
We investigated the effects of 2-year folic acid and vitamin B12 supplementation on cognitive performance in elderly people with elevated homocysteine (Hcy) levels. This multicenter, double-blind, randomized, placebo-controlled trial included 2,919 elderly participants (65 years and older) with Hcy levels
Jian-Zhuang Tan et al.
Journal of the science of food and agriculture, 95(1), 126-135 (2014-04-15)
The effects of dietary l-arginine (Arg) on immunosuppression following infectious bursal disease virus (IBDV) inoculation in broiler chickens were evaluated. The design of this study was a 5 × 2 factorial arrangement (n = 5) with five Arg concentrations (starter:
Paula Dominguez-Salas et al.
The American journal of clinical nutrition, 97(6), 1217-1227 (2013-04-12)
Animal models show that periconceptional supplementation with folic acid, vitamin B-12, choline, and betaine can induce differences in offspring phenotype mediated by epigenetic changes in DNA. In humans, altered DNA methylation patterns have been observed in offspring whose mothers were
Simon J Moore et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(37), 14906-14911 (2013-08-08)
It has been known for the past 20 years that two pathways exist in nature for the de novo biosynthesis of the coenzyme form of vitamin B12, adenosylcobalamin, representing aerobic and anaerobic routes. In contrast to the aerobic pathway, the
Ryan Sturms et al.
Journal of bacteriology, 197(14), 2412-2421 (2015-05-13)
Bacterial microcompartments (MCPs) are a diverse family of protein-based organelles composed of metabolic enzymes encapsulated within a protein shell. The function of bacterial MCPs is to optimize metabolic pathways by confining toxic and/or volatile metabolic intermediates. About 20% of bacteria
Rebecca L Lander et al.
Public health nutrition, 17(9), 1984-1992 (2013-09-07)
To examine the micronutrient status of disadvantaged pre-schoolers from Northeast Brazil, following the introduction of pro-poor policies, by assessing the prevalence of anaemia and micronutrient deficiencies and the role of sociodemographic factors, genetic Hb disorders and parasitic infections. In a
The metabolic processes of folic acid and Vitamin B12 deficiency
Mahmood L
Journal of Health Research and Reviews, 1(1), 5-5 (2014)
Fatou Ba et al.
Bioresource technology, 200, 147-152 (2015-10-20)
A water-soluble matrix was extracted from green vegetative Haematococcus pluvialis through high-pressure cell disruption either at native pH (5.7) or with pH shifting to neutral (7). The resulting supernatant is mainly composed of carbohydrates and proteins, with the highest yield
András Jeney
Orvosi hetilap, 154(44), 1754-1758 (2013-10-29)
Increased blood cell regeneration in exsanguinated experimental animals treated either with liver or with aqueous liver extracts was reported by Whipple and by Jeney and Jobling, respectively. These findings stimulated Minot and Murphy to provide evidence for the efficacy of
Huifeng Shan et al.
AMB Express, 4, 48-48 (2014-11-18)
A fermentative enrichment culture (designated DHM-1) that grows on corn syrup was evaluated for its ability to cometabolically biodegrade high concentrations of chloroform (CF), carbon tetrachloride (CT), and trichlorofluoromethane (CFC-11). When provided with corn syrup and vitamin B12 (0.03 mol B12
Vladimir M Korkhov et al.
Nature structural & molecular biology, 21(12), 1097-1099 (2014-11-18)
The reaction mechanism of BtuCD-F-catalyzed vitamin B12 transport into Escherichia coli is currently unclear. Here we present the structure of the last missing state in the form of AMP-PNP-bound BtuCD, trapped by a disulfide cross-link. Our structural and biochemical data
Lawrence R Solomon
Journal of the American Geriatrics Society, 61(4), 577-582 (2013-03-26)
To determine whether high serum folate levels contribute to metabolite changes in elderly subjects with normal cobalamin levels. Case series. Outpatient clinic at a university-based staff model health maintenance organization. Two hundred thirty-three ambulatory individuals without diabetes mellitus with normal
Gang Xu et al.
American journal of physical medicine & rehabilitation, 93(4), 287-298 (2013-11-08)
The aim of this study was to explore the efficacy of transcutaneous electrical nerve stimulation (TENS) with locally injected cobalamin in relieving pain and improving activities of daily living in patients with postherpetic neuralgia. Ninety patients (≥50 yrs old) with
Camila Simioni Vanzin et al.
Cellular and molecular neurobiology, 35(6), 899-911 (2015-03-26)
Cystathionine-β-synthase (CBS) deficiency is the main cause of homocystinuria. Homocysteine (Hcy), methionine, and other metabolites of Hcy accumulate in the body of affected patients. Despite the fact that thromboembolism represents the major cause of morbidity in CBS-deficient patients, the mechanisms
Luciana Hannibal et al.
Clinical chemistry and laboratory medicine, 51(3), 477-488 (2012-12-18)
The causes of cobalamin (B12, Cbl) deficiency are multifactorial. Whether nutritional due to poor dietary intake, or functional due to impairments in absorption or intracellular processing and trafficking events, the major symptoms of Cbl deficiency include megaloblastic anemia, neurological deterioration
Esko J Wiltshire et al.
The Journal of pediatrics, 166(2), 319-325 (2014-12-06)
To determine the effect of polymorphisms in NOS3 and folate pathway enzymes on vascular function and folate status and endothelial response to folate in children with diabetes or obesity. A total of 244 subjects (age 13.8 ± 2.8 years, 125
Ann Brunick et al.
Dental assistant (Chicago, Ill. : 1994), 82(4), 12-12 (2013-09-06)
This course will teach the desirable characteristics of nitrous oxide, indications and contraindications for N2O/O2 use, as well as facts and myths surrounding chronic exposure to nitrous oxide, the biologic effects associated with high levels of the gas, and ways
Alexandra C Weaver et al.
Toxins, 6(12), 3336-3353 (2014-12-24)
To evaluate the effects of the mycotoxins deoxynivalenol (DON) and zearalenone (ZEA) on pigs and the benefits of two mycotoxin mitigation strategies, gilts (n = 84, 9.1 ± 0.1 kg) were allotted to four treatments: CON (control); MT (4.8 mg/kg
Akio Nakajima et al.
PloS one, 10(5), e0126582-e0126582 (2015-05-15)
IgG4-related disease (IgG4-RD) is a new clinical entity of unknown etiology characterized by elevated serum IgG4 and tissue infiltration by IgG4-positive plasma cells. Although aberrancies in acquired immune system functions, including increases in Th2 and Treg cytokines observed in patients
Jack Metz
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde, 103(12 Suppl 1), 978-981 (2013-12-05)
Reports from some Western countries indicate that mandatory folate food fortification (FFF) has substantially reduced the prevalence of folate deficiency, leading to calls for folate testing following FFF to be limited to specific indications such as macrocytic anaemia. This is
Ali Ihsan Gemici et al.
Clinical and experimental rheumatology, 31(3 Suppl 77), 57-59 (2013-10-23)
Familial Mediterranean fever (FMF) is an autosomal recessive autoinflammatory disease characterised by paroxysmal attacks of serosal inflammation. Colchicine is highly effective in preventing these attacks but it may also disrupt the intestinal absorption of vitamin B12. We hypothesised that patients
Common vitamin B complex agents and folic acid: Part I. Cyanocobalamin (vitamin B12) (kaybovite [parenteral]; berubigen; betalin-12; kaybovite-1000; rubramin-pc).
D W Claussen
Gastroenterology nursing : the official journal of the Society of Gastroenterology Nurses and Associates, 19(6), 221-222 (1996-11-01)
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