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Vitamin B 12

Yuan Ru, Eva K Pressman, Ronnie Guillet, Philip J Katzman, Stephen J Bacak, Kimberly O O'Brien
BACKGROUND: Iron (Fe) status of neonates born to women carrying multiple fetuses might be compromised as a consequence of the high prevalence of maternal Fe deficiency and anemia coupled with an increased risk of preterm birth. This study aimed to characterize and identify determinants of anemia in this neonatal population. METHODS: Umbilical cord blood obtained from 183 neonates was utilized to assess hemoglobin (Hb), ferritin (SF), soluble transferrin receptor (sTfR), hepcidin, serum Fe, erythropoietin, folate, vitamin B-12, C-reactive protein, and interleukin-6...
June 15, 2018: Pediatric Research
Sowjanyaa Jenarthanan, Chandana Subbarao
Introduction: Pain of endodontic origin is of concern to both the patient and the clinician. Expectation of a painful experience can increase the patient's anxiety levels, making treatment more difficult. Management of endodontic pain is one of the challenging aspects in endodontics. Objective: To evaluate whether the intraligamentary mode of administration of diclogfenac sodium is effective in abating endodontic pain during interappointment visits. Aim: The purpose of this clinical trial is to evaluate the analgesic efficacy of diclofenac sodium administered through oral and intraligamentary routes in reducing postendodontic pain...
May 2018: Journal of Conservative Dentistry: JCD
Sonia L Robinson, Constanza Marín, Henry Oliveros, Mercedes Mora-Plazas, Blair J Richards, Betsy Lozoff, Eduardo Villamor
Background: Iron deficiency (ID) in infancy is related to subsequent behavior problems. The effects of micronutrient status in middle childhood are uncertain. Objective: The aim of the study was to examine the associations of micronutrient status biomarkers in middle childhood with externalizing and internalizing behavior problems in adolescence. Methods: We assessed whether ID (ferritin <15 µg/L), anemia (hemoglobin <12.7 g/dL), or blood concentrations of zinc, vitamins A and B-12, and folate at ages 5-12 y were associated with externalizing or internalizing behavior problems in adolescence in 1042 schoolchildren from Bogotá, Colombia...
April 20, 2018: Journal of Nutrition
Z Liu, Q Q Man, Y Q Li, J Z Wang, J Zhang, W H Zhao
Objective: To analyze the status of hypertension and isolated systolic hypertension and to investigate the relationship between the prevalence of hypertension and dietary factors among Chinese elderly aged 60 yea and over during 2010-2012. Methods: Using a multi-stage stratified probability proportional to size cluster randomization sampling method during 2010-2012, a total of 14 791 old people aged 60 years old and over were investigated at 150 counties (districts) from 31 provinces (autonomous regions and municipalities) in China...
June 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
Amanda M Henderson, Rika E Aleliunas, Su Peng Loh, Geok Lin Khor, Sarah Harvey-Leeson, Melissa B Glier, David D Kitts, Tim J Green, Angela M Devlin
Background: Folic acid fortification of grains is mandated in many countries to prevent neural tube defects. Concerns regarding excessive intakes of folic acid have been raised. A synthetic analog of the circulating form of folate, l-5-methyltetrahydrofolate (l-5-MTHF), may be a potential alternative. Objective: The objective of this study was to determine the effects of folic acid or l-5-MTHF supplementation on blood folate concentrations, methyl nutrient metabolites, and DNA methylation in women living in Malaysia, where there is no mandatory fortification policy...
June 1, 2018: Journal of Nutrition
Saskia Lm van Loon, Anna M Wilbik, Uzay Kaymak, Edwin R van den Heuvel, Volkher Scharnhorst, Arjen-Kars Boer
Background Methylmalonic acid (MMA) can detect functional vitamin B12 deficiencies as it accumulates early when intracellular deficits arise. However, impaired clearance of MMA from blood due to decreased glomerular filtration rate (eGFR) also results in elevated plasma MMA concentrations. Alternative to clinical trials, a data mining approach was chosen to quantify and compensate for the effect of decreased eGFR on MMA concentration. Methods Comprehensive data on patient's vitamin B12 , eGFR and MMA concentrations were collected ( n = 2906)...
January 1, 2018: Annals of Clinical Biochemistry
Jennifer A Juno, Jillian L M Waruk, Kathleen M Wragg, Christine Mesa, Carmen Lopez, Joe Bueti, Stephen J Kent, T Blake Ball, Sandra A Kiazyk
Background: End-stage renal disease (ESRD) is associated with an increased susceptibility to infectious diseases, including infection with Mycobacterium tuberculosis (Mtb) . Mucosal-associated invariant T (MAIT) cells recognize vitamin B metabolites produced by many bacterial species, including Mtb, and may play an important role in providing protective immunity against tuberculosis infection in the lung. To date, little is known about MAIT cell frequency, phenotype, or function in ESRD patients...
2018: Frontiers in Immunology
Anna Crespo, Núria Blanco-Cabra, Eduard Torrents
Pseudomonas aeruginosa is a major pathogenic bacterium in chronic infections and is a model organism for studying biofilms. P. aeruginosa is considered an aerobic bacterium, but in the presence of nitrate, it also grows in anaerobic conditions. Oxygen diffusion through the biofilm generates metabolic and genetic diversity in P. aeruginosa growth, such as in ribonucleotide reductase activity. These essential enzymes are necessary for DNA synthesis and repair. Oxygen availability determines the activity of the three-ribonucleotide reductase (RNR) classes...
2018: Frontiers in Microbiology
Didit Damayanti, Karen Jaceldo-Siegl, W Lawrence Beeson, Gary Fraser, Keiji Oda, Ella H Haddad
To investigate the association between plasma concentration of vitamin B12 and B12 intake from supplements, fortified foods, and animal source foods among vegetarians and non-vegetarians, we conducted a cross-sectional analysis among 728 participants of the Adventist Health Study 2 (AHS-2) calibration study. The median age of participants was 58 years, 65.4% were female, and 50.3% were White. We used six 24 h dietary recalls to measure B12 intake, serum vitamin B12 , and holotranscobalamin (holoTC) concentration...
June 4, 2018: Nutrients
Isaac Asante, Hua Pei, Eugene Zhou, Siyu Liu, Darryl Chui, EunJeong Yoo, Stan G Louie
An analytical method using electrospray ionization and high- performance liquid chromatography/tandem mass spectrometry (LC/ESI-MS/MS) was developed to quantify the vitamin B metabolites found in the folate one-carbon metabolism, using 50 μL of human plasma. Analytes in plasma were extracted using protein precipitation after being stabilized in 1% ascorbic acid. The analytes were separated using a Kinetex 2.6 μm Pentafluorophenyl (2.1 × 30 mm) column utilizing a gradient mobile phase system of 0...
May 22, 2018: Journal of Pharmaceutical and Biomedical Analysis
William Egan, Eric Steinberg, Jeremy Rose
A 24-year-old female, otherwise healthy, presented to the Emergency Department (ED) with difficulty walking and bilateral leg pain. The patient was a recreational nitrous oxide (NO2 ) user, also known as "whippets" or simply nitrous. Neurologic examination demonstrated an unsteady gait and positive Romberg sign along with normal deep tendon reflexes and normal muscle strength in upper and lower extremities. Laboratory results demonstrated macrocytic erythropoiesis, reduced B12 , elevated homocysteine, and elevated methylmalonic acid...
May 24, 2018: American Journal of Emergency Medicine
Jo-Anna B Baxter, Yaqub Wasan, Sajid B Soofi, Zamir Suhag, Zulfiqar A Bhutta
BACKGROUND: Adolescence is a critical period for physical and psychological growth and development, and vitamin and mineral requirements are correspondingly increased. Health and health behaviours correspond strongly from adolescence to adulthood. Developing a preconception care package for adolescent and young women in resource-limited settings could serve to empower them to make informed decisions about their nutrition, health, and well-being, as well as function as a platform for the delivery of basic nutrition-related interventions to address undernutrition...
May 30, 2018: Reproductive Health
Daphna K Dror, Lindsay H Allen
Despite the critical role of vitamin B-12 in infant development, existing recommendations for infant and maternal intake during lactation are based on milk vitamin B-12 concentrations analyzed with outdated methods in a sample of 9 Brazilian women. Accurate quantification of vitamin B-12 in the milk matrix requires effective hydrolysis of the vitamin from haptocorrin, its binding protein. The objective of the present systematic review is to consider and critique evidence of associations between milk vitamin B-12 concentration and time postpartum, maternal vitamin B-12 consumption, maternal vitamin B-12 status, and sample collection methodology...
May 1, 2018: Advances in Nutrition
N J Chaudhary, D M Patel, A J Dhami, K B Vala, K K Hadiya, J A Patel
Aim: This study aimed to evaluate the efficacy of Doublesynch and Estradoublesynch protocols on estrus induction, conception rates, plasma progesterone, protein, and cholesterol profile in anestrus Gir heifers. Materials and Methods: In this study, 50 pubertal anestrus Gir heifers were selected from the field and farm conditions. The heifers were dewormed (injection ivermectin, 100 mg, s/c) and supplemented with minerals and vitamins (injection organic phosphorus 800 mg and injection Vitamin AD3 E and Biotin 10 ml i/m) and multi-mineral bolus at 1 bolus daily for 7 days...
April 2018: Veterinary World
Mariel J Hernandez, Luciene M Dos Reis, Igor D Marques, Maria J Araujo, Cesar A M Truyts, Ivone B Oliveira, Fellype C Barreto, Elias David-Neto, Melani R Custodio, Rosa M Moyses, Ezequiel Bellorin-Font, Vanda Jorgetti
PURPOSE: Osteoblasts and adipocytes are derived from mesenchymal stem cells. An imbalance in the differentiation of these lineages could affect the preservation of bone integrity. Several studies have suggested the importance of this imbalance in the pathogenesis of osteoporosis after kidney transplant (KT), but the role of bone marrow adiposity in this process is not well known, and if the treatment with the anti-absorptive (zoledronic acid-ZA) drugs could attenuate bone loss. Thus, our objective was compare bone marrow adiposity, osteoblasts and osteocytes before and after KT, verify an association between bone remodeling process (Turnover, Volume, and Mineralization-TMV classification), the osteocyte sclerostin expression to evaluate if there is a role of Wnt pathway, as well as the effect of ZA on these cells...
2018: PloS One
Gabriele Röhrig, Ines Gütgemann, Gerald Kolb, Andreas Leischker
The interdisciplinary symposium of the working group "anemia in the aged" on the occasion of the annual conference of the German Society of Geriatrics focused this year on vitamin B12 deficiency in aged patients. Experts from hematopathology, clinical geriatrics and geriatric hematology presented the case of a 78-year-old woman and an interdisciplinary discussion was held on the epidemiology, clinical aspects as well as diagnostic and therapeutic steps. This article reviews the symposium on vitamin B12 deficiency in the aged in the context of the currently available literature...
May 23, 2018: Zeitschrift Für Gerontologie und Geriatrie
Mohammad Moshiri, Seyed Mojtaba Hosseiniyan, Seyed Adel Moallem, Farzin Hadizadeh, Amir Hossein Jafarian, Ameneh Ghadiri, Toktam Hoseini, Mahmoud Seifi, Leila Etemad
Objectives: Methamphetamine (METH) is a powerful stimulant drug that directly affects the brain and induces neurological deficits. B12 is a water-soluble vitamin (vit) that is reported to attenuate neuronal degeneration. The goal of the present study is to investigate the effect of vitamin B12 on METH's neurodegenerative changes. Materials and Methods: Two groups of 6 animals received METH (10 mg/kg, interaperitoneally (IP)) four times with a 2 hr interval. Thirty mins before METH administration, vit B12 (1 mg/kg) or normal saline were injected IP...
April 2018: Iranian Journal of Basic Medical Sciences
Zahra Sabahi, Fatemeh Farmani, Fatemeh Soltani, Mahmoodreza Moein
Objectives: The aim of this study was to prepare fraction and determine the biological activities of the polyphenol-enriched fraction of Berberis integerrima Bunge fruits. Materials and Methods: In this assay fraction was extracted by column chromatography, using Amberlite column as the stationary phase. Phenol and flavonoids in the extract and fraction were analyzed by high performance liquid chromatography (HPLC). DNA protection ability, antioxidant and xanthine oxidase inhibition capacities of this fraction were also examined...
April 2018: Iranian Journal of Basic Medical Sciences
Sedigheh Ghasemian, Zohreh Yousefi, Marjaneh Farazestanian, Leila Mousavi Seresht, Mohsen Foroughipour, Saeid Akhlaghi
Methotrexate as a single agent chemotherapy in most women with low risk gestational trophoblastic neoplasia (GTN) has been associated with high treatment rate. Combination of methotrexate with Vitamin A due to reduced number of chemotherapy regime courses is one of the treatment options for patients with low-risk GTN . Therefore, this study was performed with aim to determine the efficacy of combination therapy of Methotrexate with Vitamin A in low risk GTN treatment. This randomized clinical trial was performed on 49 patients with low risk gestational trophoblastic neoplasia...
2018: Iranian Journal of Pharmaceutical Research: IJPR
Dattatray S Bhat, Lourdes L Gruca, Carole D Bennett, Prachi Katre, Anura V Kurpad, Chittaranjan S Yajnik, Satish C Kalhan
BACKGROUND: Methionine loading test (MLT) has been used primarily to identify defects in transsulfuration of homocysteine in cystathionine beta synthase deficiency. It may not be as useful to evaluate remethylation pathway, in vitamin B-12 and folate deficiencies. OBJECTIVE: We used tracer isotope labelled MLT to interrogate transsulfuration and remethylation independently in vitamin B-12 deficiency. DESIGN: We studied vitamin B-12 deficient women with a tracer labelled MLT before and eleven months after treatment with vitamin B-12...
2018: PloS One
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