Results 31 to 40 of about 813,774 (373)

Vitamin B12 concentrations and clinical spectrum of apparently healthy elderly population [PDF]

open access: yesPerspectives In Medical Research, 2020
Introduction : Prevalence of vitamin B12 deficiency is believed to increase with aging. The wide and non-specific spectrum of clinical presentations in patients poses a tough challenge to physicians suspecting vitamin B12 deficiency.
Darshana Makwana 1 Deepak Kumar P2 , Pragathi Wadkar3
doaj  

Influence of vitamin B12 and light on the formation of chlorosomes in green- and brown-colored Chlorobium species [PDF]

open access: yes, 1993
The specific Bchl a and c content of the vitamin B12-dependent Chlorobium limicola strain 1230 decreased strongly under vitamin B12 limitation. In comparison to a regularly grown culture (20 g vitamin B12/l) the specific Bchl c content of a B12-limited ...
Fischer, Ulrich   +3 more
core   +1 more source

Serum vitamin B12 associated with vitamin D/25(OH)D in women with recurrent aphthous stomatitis.

open access: yesJournal of Oral Research, 2020
Vitamin B12 and Vitamin D deficiency may contribute to recurrent aphthous stomatitis (RAS). Current studies have showed vitamin B12 to be associated with vitamin D in women, however no study has assessed vitamin B12 associated with vitamin D/25(OH)D in ...
Hendri Susanto   +5 more
doaj   +1 more source

Vitamin B12 III. The assay of vitamin B12

open access: yesBiochimica et Biophysica Acta, 1952
1. 1. After the addition of KCN, purified liver-extracts can be chromatographed on Al2O3, the vitamin B12 being collected as one single band which can be measured spectrophotometrically. 2. 2. The values, thus obtained, agree satisfactorily with those of the L. Leichmannii and a little less with the L. lactis Dorner assay. both in liquid medium.
Lens, J.   +5 more
openaire   +3 more sources

Drug interactions may be important risk factors for methotrexate neurotoxicity, particularly in pediatric leukemia patients [PDF]

open access: yes, 2016
Purpose: Methotrexate administration is associated with frequent adverse neurological events during treatment for childhood acute lymphoblastic leukemia.
Baird, Susan F.   +5 more
core   +2 more sources

Relationship between Vitamin B12 and Cobalt Metabolism in Domestic Ruminant: An Update

open access: yesAnimals, 2020
Simple Summary We review the role of cobalt and vitamin B12 in animals, especially in ruminants. Vitamin B12 is an essential part of the enzyme systems involved in multiple metabolic reactions and mainly in the formation of energy from ruminal ...
J. González-Montaña   +5 more
semanticscholar   +1 more source

Premarital screening of 466 Mediterranean women for serum ferritin, vitamin B12, and folate concentrations [PDF]

open access: yes, 2015
Background/aim: Iron, folate, and vitamin B12 serum levels are closely related with dietary habits and have an essential role in the healthy development of a fetus.
Demirciler, İ.   +5 more
core   +1 more source

Low vitamin B12 levels among newly-arrived refugees from Bhutan, Iran and Afghanistan: a multicentre Australian study. [PDF]

open access: yesPLoS ONE, 2013
BACKGROUND: Vitamin B12 deficiency is prevalent in many countries of origin of refugees. Using a threshold of 5% above which a prevalence of low Vitamin B12 is indicative of a population health problem, we hypothesised that Vitamin B12 deficiency exceeds
Jill Benson   +6 more
doaj   +1 more source

Global Burden Related to Nitrous Oxide Exposure in Medical and Recreational Settings: A Systematic Review and Individual Patient Data Meta-Analysis. [PDF]

open access: yes, 2019
The risk of adverse effects of nitrous oxide (N2O) exposure is insufficiently recognized despite its widespread use. These effects are mainly reported through case reports. We conducted an individual patient data meta-analysis to assess the prevalence of
Filhine-Tresarrieu, Pierre   +10 more
core   +3 more sources

Association of Maternal Folate and Vitamin B12 in Early Pregnancy With Gestational Diabetes Mellitus: A Prospective Cohort Study

open access: yesDiabetes Care, 2020
OBJECTIVE To investigate the association of folate and vitamin B12 in early pregnancy with gestational diabetes mellitus (GDM) risk. RESEARCH DESIGN AND METHODS The data of this study were from a subcohort within the Shanghai Preconception Cohort Study ...
Xiaotian Chen   +10 more
semanticscholar   +1 more source

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