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Vitamin B12 deficiency

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https://www.readbyqxmd.com/read/29040465/the-fut2-secretor-variant-p-trp154ter-influences-serum-vitamin-b12-concentration-via-holo-haptocorrin-but-not-holo-transcobalamin-and-is-associated-with-haptocorrin-glycosylation
#1
Aneliya Velkova, Jennifer E L Diaz, Faith Pangilinan, Anne M Molloy, James L Mills, Barry Shane, Erica Sanchez, Conal Cunningham, Helen McNulty, Cheryl D Cropp, Joan E Bailey-Wilson, Alexander F Wilson, Lawrence C Brody
Vitamin B12 deficiency is common in older individuals. Circulating vitamin B12 concentration can be used to diagnose deficiency but this test has substantial false positive and false negative rates. We conducted genome-wide association studies (GWAS) in which we resolved total serum vitamin B12 into the fractions bound to transcobalamin and haptocorrin: two carrier proteins with very different biological properties. We replicated reported associations between total circulating vitamin B12 concentrations and a common null variant in FUT2...
October 12, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29033409/evaluation-of-serum-ferritin-and-thyroid-function-in-the-second-trimester-of-pregnancy
#2
Leqi He, Chunmei Shen, Yanan Zhang, Zaoping Chen, Heyuan Ding, Jun Liu, Bingbing Zha
Ferritin is a universal intracellular protein that acts as an iron carrier. Several studies have indicated that iron deficiency affects thyroid function in non-pregnant women. Our objective was to assess the relationship between serum ferritin levels and thyroid function in pregnant women during the second trimester. Pregnant women with sufficient iodine intake and normal antithyroid antibodies during the second trimester were recruited from the obstetric outpatient department of the Fifth People's Hospital of Fudan University...
October 13, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/29032242/combination-of-vitamin-b12-active-forms-improved-fetal-growth-in-wistar-rats-through-up-regulation-of-placental-mir-16-and-mir-21-levels
#3
Tejas Shah, Sanjay Mishra, Amol More, Suhas Otiv, Kishori Apte, Kalpana Joshi
Aim Epidemiological studies have indicated importance of folate and vitamin (B12) during pregnancy. Also available evidence on efficacy of B12 forms viz. Cyanocobalamin (Cbl), Methylcobalamin (MeCbl), Adenosylcobalamin (AdCbl) and Hydroxycobalamin (HCbl) in preventing or treating cobalamin deficiency is limited. The present study examines the effect of various B12 forms in combination with folate during pregnancy and their effect on gestational outcomes. MAIN METHOD: In the present study, we examined the effect of various vitamin B12 forms in presence of recommended folate (RFol: 400μg/day) and high folate (HFol: 5mg/day) on gestational outcomes in female Wistar rats...
October 12, 2017: Life Sciences
https://www.readbyqxmd.com/read/29026589/a-retrospective-analysis-of-biochemical-and-haematological-parameters-in-patients-with-eating-disorders
#4
Leanne J Barron, Robert F Barron, Jeremy C S Johnson, Ingrid Wagner, Cameron J B Ward, Shannon R B Ward, Faye M Barron, Warren K Ward
BACKGROUND: The objective of the study was to determine whether levels of biochemical and haematological parameters in patients with eating disorders (EDs) varied from the general population. Whilst dietary restrictions can lead to nutritional deficiencies, specific abnormalities may be relevant to the diagnosis, pathogenesis and treatment of EDs. METHODS: With ethics approval and informed consent, a retrospective chart audit was conducted of 113 patients with EDs at a general practice in Brisbane, Australia...
2017: Journal of Eating Disorders
https://www.readbyqxmd.com/read/29025026/response-to-vitamin-b12-deficiency-may-coexist-with-endocrine-causes-of-hyperpigmentation
#5
A K Pannu, R Golla
No abstract text is available yet for this article.
July 16, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29019718/bilateral-red-legs-as-a-result-of-vitamin-b12-deficiency
#6
Sanjay Budhdeo, Vuvek Rajagopal
No abstract text is available yet for this article.
October 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/29016304/hair-mercury-level-is-associated-with-anemia-and-micronutrient-status-in-children-living-near-artisanal-and-small-scale-gold-mining-in-the-peruvian-amazon
#7
Caren Weinhouse, Ernesto J Ortiz, Axel J Berky, Paige Bullins, John Hare-Grogg, Laura Rogers, Ana-Maria Morales, Heileen Hsu-Kim, William K Pan
Anemia has been widely studied in global health contexts because of severe nutritional deficiency, and more recently, inflammatory status, but chemical exposures are rarely considered. Until recently, "anemia" was used synonymously with "iron deficiency anemia (IDA)" in global health settings. However, only 50% of anemia cases worldwide are IDA. Environmental toxicology studies of anemia risk have generally focused on populations in developed countries, albeit with high exposure to environmental toxicants, such as lead or cadmium...
September 25, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28985731/screening-for-celiac-disease-in-poorly-controlled-type-2-diabetes-mellitus-worth-it-or-not
#8
Muhammed Kizilgul, Ozgur Ozcelik, Selvihan Beysel, Hakan Akinci, Seyfullah Kan, Bekir Ucan, Mahmut Apaydin, Erman Cakal
BACKGROUND: Recent studies have demonstrated that immune factors might have a role in the pathophysiology of insulin resistance and type 2 diabetes mellitus (T2DM). Inappropriate glycemic control in patients with T2DM is an important risk factor for the occurrence of diabetes complications. The prevalence of celiac disease (CD) is high in type 1 diabetes mellitus however, there are scarce data about its prevalence in T2DM. Our aim was to investigate the prevalence of celiac disease among insulin-using type 2 diabetes patients with inappropriate glycemic control...
October 6, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28981944/-association-of-transcobalamine-ii-gene-polymorphisms-and-serum-homocysteine-vitamin-b12-and-folate-levels-with-ulcerative-colitis-among-chinese-patients
#9
Shuzi Zheng, Hao Wu, Fangpeng Ye, Xuanping Xia, Shenglong Xia, Xiuqing Lin, Xiaoli Wu, Lijia Jiang, Ran Ding, Yi Jiang
OBJECTIVE: To assess the association of transcobalamine II (TCN2) gene polymorphisms and serum levels of homocysteine (Hcy), vitamin B12 and folate with ulcerative colitis (UC) among Chinese patients. METHODS: For 397 UC patients and 574 controls, two single nucleotide polymorphisms of the TCN2 gene (rs1801198, rs9606756) were tested with an improved multiple ligase detection reaction method. Serum Hcy, vitamin B12 and folate were measured with an enzymatic cycling assay and an chemiluminescence immunoassay, respectively...
October 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28977620/case-series-of-infantile-tremor-syndrome-in-tertiary-care-paediatric-centre-from-southern-india
#10
Vykuntaraju K Gowda, Vinyasa Kolli, Asha Benakappa, Varunvenkat M Srinivasan, Sanjay K Shivappa, Naveen Benakappa
Introduction: Infantile tremor syndrome (ITS) is characterized by anaemia, skin depigmentation, tremors and developmental delay. The lack of sufficient literature on ITS and its conflicting association with vitamin B12 deficiency made us present this article. Objective: The objective of this study is to describe demographic, clinical and laboratory profile and outcome of ITS. Methods: This is a retrospective chart review of all children presenting with typical features of ITS attending a tertiary paediatric centre in southern India between January 2014 and January 2017...
July 27, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28975627/meat-consumption-during-pregnancy-and-substance-misuse-among-adolescent-offspring-stratification-of-tcn2-genetic-variants
#11
Joseph R Hibbeln, John Paul SanGiovanni, Jean Golding, Pauline M Emmett, Kate Northstone, John M Davis, Marc Schuckit, Jon Heron
BACKGROUND: Reducing meat consumption is often advised; however, inadvertent nutritional deficiencies during pregnancy may result in residual neurodevelopmental harms to offspring. This study assessed possible effects of maternal diets in pregnancy on adverse substance use among adolescent offspring. METHODS: Pregnant women and their 13-year-old offspring taking part in a prospective birth cohort study, the Avon Longitudinal Study of Parents and Children (ALSPAC), provided Food Frequency Questionnaire data from which dietary patterns were derived using principal components analysis...
October 4, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28969365/evidence-for-potential-underestimation-of-clinical-folate-deficiency-in-resource-limited-countries-using-blood-tests
#12
Asok C Antony
Although a low serum folate concentration is a useful biomarker of pure folate deficiency, the presence of vitamin B12 deficiency or hemolysis or both in individuals with low folate status predictably raises serum folate levels. Therefore, in resource-limited settings where dietary folate deficiency can coexist with vitamin B12 deficiency or malaria or both, the serum folate concentration can range from normal to high, leading to serious underestimation of tissue folate status. This review traces the genesis of an inappropriate overreliance on the serum folate concentration to rule out folate deficiency in vulnerable populations of women and children...
August 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28956785/is-nitrous-oxide-really-that-joyful
#13
N H P Glijn, D van der Linde, E Ertekin, P L M van Burg, Y A M Grimbergen, E J Libourel
We present a case of non-immune haemolytic anaemia with leukopenia and acute severe neurological impairments, as a result of severe vitamin B12 deficiency due to recreational use of nitrous oxide.
September 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/28953003/vitamin-b12-deficiency-in-inflammatory-bowel-disease-a-prospective-observational-pilot-study
#14
Robert Battat, Uri Kopylov, Joshua Byer, Maida J Sewitch, Elham Rahme, Hacene Nedjar, Elana Zelikovic, Serge Dionne, Talat Bessissow, Waqqas Afif, Paula J Waters, Ernest Seidman, Alain Bitton
BACKGROUND AND AIM: Diagnostic and management guidelines for vitamin B12 (cobalamin, Cbl) deficiency in inflammatory bowel disease (IBD) are lacking. True deficiency is defined as Cbl concentrations below reference range combined with elevated methylmalonic acid (MMA) concentrations. Studies analyzing Cbl status in IBD use only Cbl concentrations without confirmatory MMA. This study aims to determine the proportion of IBD patients with Cbl concentrations below reference range and their predisposing clinical and genetic characteristics...
September 25, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28949421/calcium-supplementation-commencing-before-or-early-in-pregnancy-or-food-fortification-with-calcium-for-preventing-hypertensive-disorders-of-pregnancy
#15
REVIEW
G Justus Hofmeyr, Sarah Manyame
BACKGROUND: Pre-eclampsia is considerably more prevalent in low- than high-income countries. One possible explanation for this discrepancy is dietary differences, particularly calcium deficiency. Calcium supplementation in the second half of pregnancy reduces the serious consequences of pre-eclampsia and is recommended by the World Health Organization (WHO) for women with low dietary calcium intake, but has limited effect on the overall risk of pre-eclampsia. It is important to establish whether calcium supplementation before and in early pregnancy has added benefit...
September 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28943131/recurrent-anaemia-in-a-patient-with-lymphocytic-gastritis-and-vitamin-b12-deficiency
#16
Marcos Antônio Thereza-Filho, Emília T O Bansho, Débora Tonon, Lee I-Ching, Esther B Dantas-Corrêa, Viriato J L Cunha, Leonardo L Schiavon, Janaína L Narciso-Schiavon
Lymphocytic gastritis is an idiopathic disease, characterized by intraepithelial infiltration of large numbers of T lymphocytes and often described in association with coeliac disease and Helicobacter pylori infection. Although usually associated with iron deficiency anaemia, there is no description on the association between lymphocytic gastritis and secondary vitamin B12 deficiency anaemia. We describe a rare case of recurrent anaemia in a patient with lymphocytic gastritis reversed with vitamin B12 replacement...
September 22, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28940428/maternal-alcohol-use-and-nutrition-during-pregnancy-diet-and-anthropometry
#17
R Colin Carter, Marjanne Senekal, Neil C Dodge, Lori Bechard, Ernesta M Meintjes, Christopher D Molteno, Christopher Duggan, Joseph L Jacobson, Sandra W Jacobson
BACKGROUND: Despite known risks of prenatal nutritional deficiencies and studies documenting increased prevalence of poor dietary intake among non-pregnant alcohol abusers, the nutritional status of heavy drinking pregnant women remains largely unstudied. Animal models have found interactions between prenatal ethanol exposure and micronutrients, such as choline, folate, B12, and iron, and human studies have reported that lower maternal weight and body mass confer increased fetal alcohol-related risk...
September 20, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28938471/low-vitamin-b12-in-pregnancy-is-associated-with-adipose-derived-circulating-mirs-targeting-ppar%C3%AE-and-insulin-resistance
#18
Antonysunil Adaikalakoteswari, Manu Vatish, Mohammad Tauqeer Alam, Sascha Ott, Sudhesh Kumar, Ponnusamy Saravanan
Context: Low vitamin B12 (B12) during pregnancy is associated with higher maternal obesity, insulin resistance(IR) and gestational diabetes(GDM). B12 is a key co-factor in 1-carbon metabolism. Objective: We hypothesize that B12 plays a role in epigenetic regulation by altering circulating miRNAs(miRs) during adipocyte differentiation and results in an adverse metabolic phenotype. Design, settings and main-outcome measure: Human pre-adipocyte cell-line(Chub-S7) were differentiated in various B12 concentrations: Control(500nM), LowB12(0...
September 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28936998/venous-thromboembolism-due-to-hyperhomocysteinaemia-and-tuberculosis
#19
Ankush Chaudhary, Unnati Desai, Jyotsna M Joshi
An 18-year-old male presented to our hospital with complaints of episodic abdominal pain, dry cough and right pleuritic chest pain. He was diagnosed as a case of right tuberculous pleural effusion on the basis of the pleural fluid Genexpert report of Mycobacterium tuberculosis detected sensitive to rifampicin and was started on antituberculous therapy. Forty-five days later, he presented with acute onset breathlessness, swelling of the right leg, streaky haemoptysis and a fresh left-sided pleural effusion. Evaluation revealed venous thromboembolism (right lower lobar segment pulmonary embolism with right leg deep vein thrombosis)...
May 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28936083/unilateral-papilledema-in-cerebral-venous-sinus-thrombosis
#20
Girish Baburao Kulkarni, Ravinder Jeet Singh, Veeranna Gadad, Subasree Ramakrishnan, Veerendrakumar Mustare
In the majority of patients with raised intracranial pressure, the papilledema is bilateral. Unilateral papilledema is rare in conditions causing intracranial hypertension, and it has been described in Foster-Kennedy syndrome and in some cases of idiopathic intracranial hypertension. It has never been reported in cerebral venous thrombosis. We report a young lady presenting with features of subacute onset of headache with seizures, on evaluation she had superior sagittal and bilateral lateral sinus thrombosis...
August 2017: Journal of Neurosciences in Rural Practice
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