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Vitamin B12 deficiency

2022
Of the water-soluble vitamins, vitamin B12 (B12) has the lowest daily requirement. It also has several unique properties including a complex pathway for its absorption and assimilation requiring intact gastric and terminal small intestinal function, an enterohepatic pathway, and several dedicated binding proteins and chaperons.
Ralph, Green, Joshua W, Miller
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Vitamin B12 deficiency

BMJ, 2014
#### Summary points Vitamin B12 is an essential cofactor that is integral to methylation processes important in reactions related to DNA and cell metabolism, thus a deficiency may lead to disruption of DNA and cell metabolism and thus have serious clinical consequences.1 Intracellular conversion of vitamin B12 to two active coenzymes ...
Alesia, Hunt   +2 more
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Deficiency of Vitamin B12 in Chlorella

Journal of Pharmaceutical Sciences, 1968
Repeated systematic attempts to detect vitamin B 12 in two species of Chlorella at different times during the culture growth period failed to reveal consistent or significant evidence of B 12 or B 12 -like activity. The results are discussed in terms of other reports in the literature.
R, Pratt, E, Johnson
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Vitamin B12 Deficiency in Infants

The Indian Journal of Pediatrics, 2015
To determine different clinical presentations of vitamin B12 deficiency in infants.Infants at the age of 1-20 mo admitted to infancy clinic of authors' hospital between January 2011-2013 with various clinical presentations due to vitamin B12 deficiency were included in the study.
Malbora, Baris   +5 more
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Investigating vitamin B12 deficiency

BMJ, 2019
### What you need to know A 44 year old woman attends her general practitioner with a two year history of lethargy, which has resulted in her being unable to continue her job as a primary school teacher. She had a history of anaemia a few years ago and was not taking any regular medication, except for the combined contraceptive pill.
Nithya, Sukumar, Ponnusamy, Saravanan
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Vitamin B12 Deficiency

Advance for nurse practitioners, 2006
Abstract The patient, an 84-year-old male resident of a veteran’s home, was admitted to the hospital following a fall in which he had sustained a fracture of his left radius and several lacerations. Physical examination on admission revealed a well-nourished elderly male in no great distress (body mass index (BMI), 22.5 kg/m2).
Dorothy J Vanderjagt, Denis M Mccarthy
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Vitamin B12 deficiency and phenylketonuria

Molecular Genetics and Metabolism, 2011
The literature regarding the vitamin B(12) status of patients with phenylketonuria was reviewed. Adequate amounts of B(12) are provided in products used in dietary treatment; however, a number of case reports and cohort studies document deficiency in those who have discontinued taking amino acid, mineral and vitamin supplements but who continue to eat ...
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