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Nature Reviews Disease Primers, 2017 Vitamin B12 (B12; also known as cobalamin) is a B vitamin that has an important role in cellular metabolism, especially in DNA synthesis, methylation and mitochondrial metabolism. Clinical B12 deficiency with classic haematological and neurological manifestations is relatively uncommon.
Green, Ralph +11 more
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Diabetes, obesity and metabolism, 2022
Metformin blocks the absorption of vitamin B12 through a mechanism that has not been established but could be because of interference with the calcium‐dependent binding of the intrinsic factor vitamin B12 complex to the cubam receptor in the terminal ...
D. Bell
semanticscholar +1 more source
Metformin blocks the absorption of vitamin B12 through a mechanism that has not been established but could be because of interference with the calcium‐dependent binding of the intrinsic factor vitamin B12 complex to the cubam receptor in the terminal ...
D. Bell
semanticscholar +1 more source
The journal of prevention of Alzheimer's disease, 2021
To evaluate the combined action of folic acid and vitamin B12 supplementation on cognitive performance and inflammation in patients with Alzheimer’s disease (AD). This was a randomized, single-blind, placebo-controlled trial.
H. Chen +9 more
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To evaluate the combined action of folic acid and vitamin B12 supplementation on cognitive performance and inflammation in patients with Alzheimer’s disease (AD). This was a randomized, single-blind, placebo-controlled trial.
H. Chen +9 more
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Nutrition reviews, 2021
CONTEXT The results from epidemiologic studies on the intake of dietary vitamin B1, B2, B6, and B12 and association with risk of developing depression have been inconsistent.
Yanjun Wu +3 more
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CONTEXT The results from epidemiologic studies on the intake of dietary vitamin B1, B2, B6, and B12 and association with risk of developing depression have been inconsistent.
Yanjun Wu +3 more
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Child and Adolescent Mental Health, 2020
BACKGROUND Depression is a heterogeneous disorder and is thought to develop as a result of complex interactions between genetic and environmental factors. One-carbon metabolism that includes vitamin B12, folic acid, and homocysteine has been investigated
E. Esnafoglu, Deniz Deniz Ozturan
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BACKGROUND Depression is a heterogeneous disorder and is thought to develop as a result of complex interactions between genetic and environmental factors. One-carbon metabolism that includes vitamin B12, folic acid, and homocysteine has been investigated
E. Esnafoglu, Deniz Deniz Ozturan
semanticscholar +1 more source
Biochimica et Biophysica Acta, 1950
Abstract 1. 1. In mildly acid solutions, kept in the dark, the spectrum of vitamin B 12 remains unchanged; on exposure to light, vitamin B 12b is rapidly formed. 2. 2. The spectrum of an irradiated solution ( pH ≧ 4 ), subsequently kept in the dark, shows a slow reversal to that of vitamin B 12 . 3. 3.
W. L. C. Veer +3 more
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Abstract 1. 1. In mildly acid solutions, kept in the dark, the spectrum of vitamin B 12 remains unchanged; on exposure to light, vitamin B 12b is rapidly formed. 2. 2. The spectrum of an irradiated solution ( pH ≧ 4 ), subsequently kept in the dark, shows a slow reversal to that of vitamin B 12 . 3. 3.
W. L. C. Veer +3 more
openaire +3 more sources
2022
Photoreceptor proteins enable living organisms to sense light and transduce this signal into biochemical outputs to elicit appropriate cellular responses. Their light sensing is typically mediated by covalently or noncovalently bound molecules called chromophores, which absorb light of specific wavelengths and modulate protein structure and biological ...
Padmanabhan, Subramanian +4 more
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Photoreceptor proteins enable living organisms to sense light and transduce this signal into biochemical outputs to elicit appropriate cellular responses. Their light sensing is typically mediated by covalently or noncovalently bound molecules called chromophores, which absorb light of specific wavelengths and modulate protein structure and biological ...
Padmanabhan, Subramanian +4 more
openaire +3 more sources