Results 31 to 40 of about 1,585,833 (365)

Sharing Vitamin B₁₂ between Bacteria and Microalgae Does Not Systematically Occur: Case Study of the Haptophyte Tisochrysis lutea

Microorganisms, 2022
Haptophyte microalgae are key contributors to microbial communities in many environments. It has been proposed recently that members of this group would be virtually all dependent on vitamin B12 (cobalamin), an enzymatic cofactor produced only by some ...
Charlotte Nef, Simon Dittami, Raymond Kaas, Enora Briand, Cyril Noël, Francis Mairet, Matthieu Garnier   +6 more
doaj   +1 more source

Prevalence of vitamin B-12 insufficiency during pregnancy and its effect on offspring birth weight:a systematic review and meta-analysis [PDF]

, 2016
Background: Vitamin B-12 and folate are micronutrients essential for normal embryogenesis. Vitamin B-12 insufficiency in pregnancy is high in certain parts of the world, such as India, and although this has been linked to low birth weight (LBW) in these ...
Bhopal, Raj, Kandala, Ngianga-Bakwin, Rafnsson, Snorri B, Saravanan, Ponnusamy, Sukumar, Nithya, Yajnik, Chittaranjan S   +5 more
core   +2 more sources

A study on the correlation between pain frequency and severity and vitamin B12 levels in episodic and chronic migraine

Arquivos de Neuro-Psiquiatria, 2022
Background It is believed that vitamin B12 deficiency and hyperhomocysteinemia cause endothelial cell damage by increasing the levels of free oxygen radicals, which may, in turn, be related to the onset of migraine episodes. Objective The objective of
Sibel Üstün Özek
doaj   +1 more source

Oral vitamin B₁₂versus intramuscular vitamin B₁₂for vitamin B₁₂deficiency [PDF]

Cochrane Database of Systematic Reviews, 2018
Vitamin B12 deficiency is common, and the incidence increases with age. Most people with vitamin B12 deficiency are treated in primary care with intramuscular (IM) vitamin B12. Doctors may not be prescribing oral vitamin B12 formulations because they may be unaware of this option or have concerns regarding its effectiveness.To assess the effects of ...
Ling Ling Qin, Linyi Li, Haiyan Wang, Yanan Song, Tong Hua Liu, Josep Vidal-Alaball   +5 more
openaire   +3 more sources

A study of clinical profile of vitamin B 12 deficiency with special reference to dermatologic manifestations in a Tertiary Care Hospital in sub-Himalayan Bengal

Indian Journal of Dermatology, 2015
Background: Vitamin B 12 deficiency is thought to be uncommon in the eastern parts of India including Bengal and the eastern states as compared to the northern and southern parts of India.
Kaushik Sen, Pradyot Sinhamahapatra, Joseph Lalhmachhuana, Subhabrata Ray   +3 more
doaj   +1 more source

Receptor uptake arrays for vitamin B12, siderophores and glycans shape bacterial communities [PDF]

Ecology & Evolution 7:10175-10195 (2017), 2017
Molecular variants of vitamin B12, siderophores and glycans occur. To take up variant forms, bacteria may express an array of receptors. The gut microbe Bacteroides thetaiotaomicron has three different receptors to take up variants of vitamin B12 and 88 receptors to take up various glycans.
arxiv   +1 more source

Vaccination rates modulate the correlation between country latitude and covid-19 surge date arising this autumn 2021 [PDF]

arXiv, 2021
A clear linear correlation of covid-19 surge date with country latitude was observed last autumn 2020, but not with temperature, nor with humidity, pointing the seasonal vitamin D status decline as a contributor factor. Well vaccinated European countries are this autumn 2021 repeating explosive surges.
arxiv  

Dietary Supplements and Nutraceuticals Under Investigation for COVID-19 Prevention and Treatment [PDF]

, 2021
Coronavirus disease 2019 (COVID-19) has caused global disruption and a significant loss of life. Existing treatments that can be repurposed as prophylactic and therapeutic agents could reduce the pandemic's devastation. Emerging evidence of potential applications in other therapeutic contexts has led to the investigation of dietary supplements and ...
arxiv   +1 more source

Effects of vitamin B-12 supplementation on neurologic and cognitive function in older people: a randomized controlled trial. [PDF]

, 2015
BACKGROUND: Moderate vitamin B-12 deficiency is relatively common in older people. However, there is little robust evidence on the effect of vitamin B-12 supplementation on neurologic and cognitive outcomes in later life.
Alan D Dangour, Astrid E Fletcher, Balk, Carmel, Chou, Clarke, Cox, Dangour, de Jager, Delis, Diana Elbourne, Elizabeth Allen, Eussen, Fine, Fine, Folstein, Ford, Goldberg, Goodglass, Hin, Hunt, Institute of Medicine, Jernerén, Ken Whyte, Kerry Mills, Kimura, Leishear, Leishear, Lindenbaum, Louise Letley, Mann, Marcus Richards, Mills, Mills, O'Leary, Podsiadlo, Ricardo Uauy, Robert Clarke, Smith, Stabler, Sucharita, Sucharita, Tombaugh, Tombaugh, Turgut, Vellas, Watanabe, Yetley   +47 more
core   +1 more source

Idiopathic autoimmune hemolytic anemia along with concomitant vitamin B12 deficiency in an adolescent girl: A rare occurrence

Journal of Family Medicine and Primary Care, 2020
Vitamin B12 deficiency is seen in countries like India mainly because of predominantly vegetarian diet and is a significant health problem. Patients present with various neurological and hematological manifestations of megaloblastic anemia.
Kapil Bhalla, Nisha Verma, Sanjiv Nanda, Ashish Gupta, Shuchi Mehra   +4 more
doaj   +1 more source