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High B12

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https://www.readbyqxmd.com/read/29774568/effects-of-plasma-proteins-on-the-transport-and-surface-characteristics-of-polysulfone-polyethersulfone-and-asymmetric-cellulose-triacetate-high-flux-dialyzers
#1
Tae Ryung Kim, Mahsa Hadidi, Seyed Pouria Motevalian, Takashi Sunohara, Andrew L Zydney
Blood-membrane interactions can have a large impact on the performance of hemodialysis membranes, particularly for high flux membranes in which the membrane itself provides very low resistance to solute transport. The objective of this study was to examine the effects of exposure to serum on the solute clearance and convective sieving characteristics of high flux polysulfone (Optiflux F250NR), polyethersulfone (ELISIO-25H), and asymmetric cellulose triacetate (SOLACEA-25H) hemodialyzers using both vitamin B12 and a range of polydisperse dextrans...
May 17, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29772225/maternal-one-carbon-metabolism-through-increased-oxidative-stress-and-disturbed-angiogenesis-can-influence-placental-apoptosis-in-preeclampsia
#2
REVIEW
Vaishali V Kasture, Deepali P Sundrani, Sadhana R Joshi
Adequate maternal nutrition is critical for a healthy pregnancy outcome and poor maternal nutrition is known to be associated with pregnancy complications like preeclampsia. We have earlier demonstrated that there is an imbalance in the levels of micronutrients (folate and vitamin B12 ) along with low levels of long chain polyunsaturated fatty acids (LCPUFA) and high homocysteine levels in women with preeclampsia. Homocysteine is known to be involved in the formation of free radicals leading to increased oxidative stress...
May 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29761147/efficacy-of-long-term-oral-vitamin-b12-supplementation-after-total-gastrectomy-results-from-a-prospective-study
#3
Joana Moleiro, Susana Mão de Ferro, Sara Ferreira, Miguel Serrano, Margarida Silveira, António Dias Pereira
Background/Objectives: Vitamin B12 (VB12) deficiency is a common complication after total gastrectomy which may be associated with megaloblastic anemia and potentially irreversible neurologic symptoms. Intramuscular supplementation of VB12 has been considered the standard treatment, although it is associated with high costs and patient discomfort. Patients/Methods: We performed a prospective uncontrolled study (ACTRN12614000107628) in order to evaluate the clinical and laboratory efficacy of long-term oral VB12 supplementation in patients submitted to total gastrectomy...
April 2018: GE Portuguese Journal of Gastroenterology
https://www.readbyqxmd.com/read/29751749/engineering-a-vitamin-b-12-high-throughput-screening-system-by-riboswitch-sensor-in-sinorhizobium-meliloti
#4
Yingying Cai, Miaomiao Xia, Huina Dong, Yuan Qian, Tongcun Zhang, Beiwei Zhu, Jinchuan Wu, Dawei Zhang
BACKGROUND: As a very important coenzyme in the cell metabolism, Vitamin B12 (cobalamin, VB12 ) has been widely used in food and medicine fields. The complete biosynthesis of VB12 requires approximately 30 genes, but overexpression of these genes did not result in expected increase of VB12 production. High-yield VB12 -producing strains are usually obtained by mutagenesis treatments, thus developing an efficient screening approach is urgently needed. RESULT: By the help of engineered strains with varied capacities of VB12 production, a riboswitch library was constructed and screened, and the btuB element from Salmonella typhimurium was identified as the best regulatory device...
May 11, 2018: BMC Biotechnology
https://www.readbyqxmd.com/read/29740582/anti-high-density-lipoprotein-antibodies-and-antioxidant-dysfunction-in-immune-driven-diseases
#5
Javier Rodríguez-Carrio, Lourdes Mozo, Patricia López, Elena Nikiphorou, Ana Suárez
Introduction: Impaired high-density lipoprotein (HDL) levels and antioxidant functionality of HDL, mainly attributed to a decreased paraoxonase-1 (PON1) functionality, have been described in autoimmune conditions. In this setting, a role for humoral response in cardiovascular disease is emerging. This study evaluates the role of immunoglobulin G (IgG) antibodies against HDL and disease-related autoantibodies on HDL dysfunction in immune-driven diseases. Methods: Serum IgG anti-HDL antibodies, PON1 activity, and total antioxidant capacity (TAC) were quantified in 381 patients with different immune-driven diseases [18 mixed connective tissue disease (MCTD), 35 primary Sjögren syndrome (pSS), 38 systemic sclerosis (SSc), 33 ANCA-associated vasculitis (AAV), 60 diabetes mellitus 1, 29 autoimmune B12 deficiency/pernicious anemia, 29 primary biliary cirrhosis, 46 IBD/Crohn, 54 IBD/UC, and 39 celiac disease (CD)] and 138 healthy controls...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29739088/thrombotic-microangiopathy-like-hemolysis-in-vitamin-b12-deficiency-related-macrocytic-anemia
#6
Masayoshi Yamanishi, Shigeru Koba, Takaaki Jo, Tohru Kotera, Shinsaku Imashuku
BACKGROUND: Hemolytic features in patients with pernicious anemia have not been emphasized. METHODS: Seven Japanese patients at 60 - 88 years of age with vitamin B12 deficiency-related hemolytic anemia were assessed. RESULTS: Serum vitamin B12 levels in these cases were 46 - 89 pg/mL (normal reference range: 233 - 914 pg/mL). Clinically, the patients presented with thrombotic microangiopathy (TMA)-like hemolytic features (including macrocytic anemia, schistocytes on blood smears, high serum lactate dehydrogenase, hyperbilirubinemia, and low serum haptoglobin)...
April 1, 2018: Clinical Laboratory
https://www.readbyqxmd.com/read/29732883/lithium-ion-recognition-with-nanofluidic-diodes-through-host-guest-complexation-in-confined-geometries
#7
Mubarak Ali, Ishtiaq Ahmed, Patricio Ramirez, Saima Nasir, Salvador Mafe, Christof M Niemeyer, Wolfgang Ensinger
The lithium ion recognition is receiving significant attention because of its application in pharmaceuticals, lubricants, and, especially, in energy technology. We present a nanofluidic device for specific lithium ion recognition via host-guest complexation in a confined environment. A lithium-selective receptor molecule, the aminoethyl-benzo-12-crown-4 (BC12C4-NH2) is designed and functionalized on single conical nanopores in polyethylene terephthalate (PET) membranes. The native carboxylic acid groups on the pore walls are covalently linked with the crown ether moieties and the process is monitored from the changes in the current-voltage (I-V) curves...
May 7, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29716764/significantly-higher-frequencies-of-hemoglobin-iron-vitamin-b12-and-folic-acid-deficiencies-and-of-hyperhomocysteinemia-in-patients-with-behcet-s-disease
#8
Ying-Shiung Kuo, Julia Yu-Fong Chang, Yi-Ping Wang, Yang-Che Wu, Yu-Hsueh Wu, Andy Sun
BACKGROUND/PURPOSE: Behcet's disease (BD) patients may have one or more hematinic deficiencies. This study evaluated whether there were significantly higher frequencies of hemoglobin, iron, vitamin B12, and folic acid deficiencies and of hyperhomocysteinemia in BD patients. METHODS: The blood hemoglobin, iron, vitamin B12, folic acid, and homocysteine concentrations in 63 BD patients were measured and compared with the corresponding levels in 126 age- and sex-matched healthy control subjects...
April 28, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29696360/randomized-phase-2-study-of-gemcitabine-and-cisplatin-with-or-without-vitamin-supplementation-in-patients-with-advanced-esophagogastric-cancer
#9
A A van Zweeden, C J van Groeningen, R J Honeywell, E Giovannetti, R Ruijter, C H Smorenburg, G Giaccone, H M W Verheul, G J Peters, Hans J van der Vliet
PURPOSE: Preclinical research and prior clinical observations demonstrated reduced toxicity and suggested enhanced efficacy of cisplatin due to folic acid and vitamin B12 suppletion. In this randomized phase 2 trial, we evaluated the addition of folic acid and vitamin B12 to first-line palliative cisplatin and gemcitabine in patients with advanced esophagogastric cancer (AEGC). METHODS: Patients with AEGC were randomized to gemcitabine 1250 mg/m2 (i.v. days 1, 8) and cisplatin 80 mg/m2 (i...
April 25, 2018: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/29695256/metabolic-distress-in-lipid-one-carbon-metabolic-pathway-through-low-vitamin-b-12-a-population-based-study-from-north-india
#10
Kallur Nava Saraswathy, Shipra Joshi, Suniti Yadav, Priyanka Rani Garg
BACKGROUND: Dyslipidemia and hyper-homocysteinemia are the major independent risk factors of cardio vascular disease. Deficiency of folate and vitamin B-12 are associated with both hyper-homocysteinemia and dyslipidemia. The aim of the study is to evaluate the relationship of homocysteine and its associated dietary determinant levels (Folate and Vitamin B-12) with lipids and obesity parameters (WC, BMI, WHR) in North Indian population. METHODS: The participants were recruited under a major government funded project through household survey covering 15 villages of Haryana, India...
April 25, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29687201/folate-promotes-s-adenosyl-methionine-reactions-and-the-microbial-methylation-cycle-and-boosts-ruminants-production-and-reproduction
#11
REVIEW
Imtiaz Hussain Raja Abbasi, Farzana Abbasi, Lamei Wang, Mohamed E Abd El Hack, Ayman A Swelum, Ren Hao, Junhu Yao, Yangchun Cao
Folate has gained significant attention due to its vital role in biological methylation and epigenetic machinery. Folate, or vitamin (B9 ), is only produced through a de novo mechanism by plants and micro-organisms in the rumen of mature animals. Although limited research has been conducted on folate in ruminants, it has been noted that ruminal synthesis could not maintain folate levels in high yielding dairy animals. Folate has an essential role in one-carbon metabolism and is a strong antiproliferative agent...
April 23, 2018: AMB Express
https://www.readbyqxmd.com/read/29673146/predictors-of-response-to-ketamine-in-treatment-resistant-major-depressive-disorder-and-bipolar-disorder
#12
Carola Rong, Caroline Park, Joshua D Rosenblat, Mehala Subramaniapillai, Hannah Zuckerman, Dominika Fus, Yena L Lee, Zihang Pan, Elisa Brietzke, Rodrigo B Mansur, Danielle S Cha, Leanna M W Lui, Roger S McIntyre
OBJECTIVES: Extant evidence indicates that ketamine exerts rapid antidepressant effects in treatment-resistant depressive (TRD) symptoms as a part of major depressive disorder (MDD) and bipolar disorder (BD). The identification of depressed sub-populations that are more likely to benefit from ketamine treatment remains a priority. In keeping with this view, the present narrative review aims to identify the pretreatment predictors of response to ketamine in TRD as part of MDD and BD. METHOD: Electronic search engines PubMed/MEDLINE, ClinicalTrials...
April 17, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29661647/which-ischemic-stroke-subtype-is-associated-with-hyperhomocysteinemia
#13
Levent Gungor, Murat Polat, Mehlika Berra Ozberk, Bahattin Avci, Ummet Abur
BACKGROUND: Stroke is still a major global health problem in both developed and developing countries. Defining stroke subtype and underlying etiologies is a major step to choose the best method for prophylaxis. Homocysteine is an endothelial toxin and elevated levels have been associated with stroke risk. In this study, we hypothesized that serum total homocysteine level may be related with specific atherothrombotic ischemic stroke subtypes and aimed to find if high serum homocysteine levels are correlated with any specific ischemic stroke subtype...
April 13, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29652246/metformin-in-non-diabetic-hyperglycaemia-the-glint-feasibility-rct
#14
Simon J Griffin, M Angelyn Bethel, Rury R Holman, Kamlesh Khunti, Nicholas Wareham, Gwen Brierley, Melanie Davies, Andrew Dymond, Rose Eichenberger, Philip Evans, Alastair Gray, Colin Greaves, Kyla Harrington, Graham Hitman, Greg Irving, Sarah Lessels, Ann Millward, John R Petrie, Martin Rutter, Mike Sampson, Naveed Sattar, Stephen Sharp
BACKGROUND: The treatment of people with diabetes with metformin can reduce cardiovascular disease (CVD) and may reduce the risk of cancer. However, it is unknown whether or not metformin can reduce the risk of these outcomes in people with elevated blood glucose levels below the threshold for diabetes [i.e. non-diabetic hyperglycaemia (NDH)]. OBJECTIVE: To assess the feasibility of the Glucose Lowering In Non-diabetic hyperglycaemia Trial (GLINT) and to estimate the key parameters to inform the design of the full trial...
April 2018: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29650340/longitudinal-evaluation-of-efficacy-safety-and-nutritional-status-during-one-year-treatment-with-the-duodenal-jejunal-bypass-liner
#15
Nina Riedel, Katharina Laubner, Anne Lautenbach, Gerhard Schön, Matthias Schlensak, Rainer Stengel, Thomas Eberl, Frank Dederichs, Jens Aberle, Jochen Seufert
BACKGROUND: The endoscopic duodenal-jejunal bypass liner (DJBL) represents a novel temporary endoscopic approach for treatment of obesity-associated type 2 diabetes. Recent results from the German DJBL registry confirmed substantial positive metabolic effects of the DJBL in type 2 diabetes. However, the last Food and Drug Administration trial was stopped due to a high occurrence of hepatic abscesses (3.5%). OBJECTIVES: Here, we analyzed time courses of development of co-morbidities, nutritive changes, and occurrence of adverse events during the 1-year treatment phase with the DJBL in the German DJBL registry...
March 9, 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29629606/cancer-and-complementary-therapies-current-trends-in-survivors-interest-and-use
#16
Maryam Qureshi, Erin Zelinski, Linda E Carlson
BACKGROUND: Cancer survivors use complementary therapies (CTs) for a variety of reasons; however, with interest and use reportedly on the rise and a widening range of products and practices available, there is a need to establish trends in and drivers of interest. We aimed to determine (1) frequencies of use, level of interest, and barriers for 30 specific CTs and (2) whether physical symptoms, perceived stress (PS), or spiritual well-being were related to interest levels. METHOD: A total of 212 cancer outpatients were surveyed at the Tom Baker Cancer Centre in Calgary, Canada...
April 1, 2018: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/29604800/modulation-infrared-thermometry-of-caloric-effects-at-up-to-khz-frequencies
#17
Jago Döntgen, Jörg Rudolph, Anja Waske, Daniel Hägele
We present a novel non-contact method for the direct measurement of caloric effects in low volume samples. The adiabatic temperature change ΔT of a magnetocaloric sample is very sensitively determined from thermal radiation. Rapid modulation of ΔT is induced by an oscillating external magnetic field. Detection of thermal radiation with a mercury-cadmium-telluride detector allows for measurements at field frequencies exceeding 1 kHz. In contrast to thermoacoustic methods, our method can be employed in vacuum which enhances adiabatic conditions especially in the case of small volume samples...
March 2018: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29577533/new-facets-of-the-known-material-local-atomic-arrangements-and-band-structure-of-boron-carbide
#18
Karsten Rasim, Reiner Ramlau, Andreas Leithe-Jasper, Takao Mori, Ulrich Burkhardt, Horst Borrmann, Walter Schnelle, Christian Carbogno, Matthias Scheffler, Yuri Grin
Boron carbide, the simple chemical combination of boron and carbon, is one of the best-known binary ceramic materials. Despite that, a coherent description of its crystal structure and physical properties resembles one of the most challenging problems in materials science. By combining ab-initio computational studies, precise crystal structure determination from diffraction experiments and state of the art high-resolution transmission-electron microscopy imaging, this concerted investigation reveals hitherto unknown local structure modifications together with the known structural alterations...
March 25, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29557533/life-at-extreme-elevations-on-atacama-volcanoes-the-closest-thing-to-mars-on-earth
#19
S K Schmidt, E M S Gendron, K Vincent, A J Solon, P Sommers, Z R Schubert, L Vimercati, D L Porazinska, J L Darcy, P Sowell
Here we describe recent breakthroughs in our understanding of microbial life in dry volcanic tephra ("soil") that covers much of the surface area of the highest elevation volcanoes on Earth. Dry tephra above 6000 m.a.s.l. is perhaps the best Earth analog for the surface of Mars because these "soils" are acidic, extremely oligotrophic, exposed to a thin atmosphere, high UV fluxes, and extreme temperature fluctuations across the freezing point. The simple microbial communities found in these extreme sites have among the lowest alpha diversity of any known earthly ecosystem and contain bacteria and eukaryotes that are uniquely adapted to these extreme conditions...
March 20, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29517182/influence-of-selected-dietary-components-on-the-functioning-of-the-human-nervous-system
#20
Agnieszka Wendołowicz, Ewa Stefańska, Lucyna Ostrowska
The diet is directly connected not only with the physical status but also with the functioning of the brain and the mental status. The potentially beneficial nutrients with a protective effect on the nervous system function include amino acids (tryptophan, phenylalanine, tyrosine, taurine), glucose and vitamins C, E, D and beta-carotene, B group vitamins (vitamin B12, vitamin B6, vitamin B4, vitamin B1) and minerals (selenium, zinc, magnesium, sodium, iron, copper, manganese, iodine). The presence of antioxidants in the diet protects against oxidative damage to nervous system cells...
2018: Roczniki Państwowego Zakładu Higieny
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