Results 51 to 60 of about 914,474 (306)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Validity and reproducibility of folate and vitamin B12 intakes estimated from a self-administered diet history questionnaire in Japanese pregnant women

open access: yesNutrition Journal, 2012
Background No validated dietary questionnaire for assessing folate and vitamin B12 intakes during pregnancy is available in Japan. We evaluated the validity and reproducibility of intakes of folate and vitamin B12 estimated from a self-administered diet ...
Shiraishi Mie   +5 more
doaj   +1 more source

Vitamin B12 in Foods, Food Supplements, and Medicines—A Review of Its Role and Properties with a Focus on Its Stability

open access: yesMolecules, 2022
Vitamin B12, also known as the anti-pernicious anemia factor, is an essential micronutrient totally dependent on dietary sources that is commonly integrated with food supplements.
Žane Temova Rakuša   +3 more
doaj   +1 more source

Comparative effectiveness of B and E vitamins with diclofenac in reducing pain due to osteoarthritis of the knee [PDF]

open access: yes, 2015
Background: Knee osteoarthritis is one of the most prevalent chronic disorders. Several pharmacological and non pharmacological approaches are used to treat this disease. Today, the effect of B and E vitamins on rheumatology diseases is being discussed.
Dehghan, M.
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Evolution of plasma vitamin B 12 in patients with solid cancers during curative versus supportive care

open access: yesArchives of Medical Science, 2021
Introduction The direction of the causal link between solid cancers and elevated plasma vitamin B 12 (B 12 ) remains uncertain. Material and methods We retrospectively included patients having two B 12 measurements with a B 12 initially ≥ 1000 ng/l ...
Valentin Lacombe   +4 more
doaj   +1 more source

Distribution of vitamin B-12 in some fishes and marine invertebrates [PDF]

open access: yes, 1979
Distribution of vitamin B-12 in the skeletal muscle of several marine and fresh water fish and marine invertebrates are reported. The vitamin B-12 content of white muscle of various fish ranges between 0.05 and 1.5 micrograms. The elasmobranch fish, such
Chhatbar, S.K., Velankar, N.K.
core  

Vitamin D related genes in lung development and asthma pathogenesis [PDF]

open access: yes, 2014
Background: Poor maternal vitamin D intake is a risk factor for subsequent childhood asthma, suggesting that in utero changes related to vitamin D responsive genes might play a crucial role in later disease susceptibility.
Anderson, Chris   +9 more
core   +1 more source

PARP inhibition and pharmacological ascorbate demonstrate synergy in castration‐resistant prostate cancer

open access: yesMolecular Oncology, EarlyView.
Pharmacologic ascorbate (vitamin C) increases ROS, disrupts cellular metabolism, and induces DNA damage in CRPC cells. These effects sensitize tumors to PARP inhibition, producing synergistic growth suppression with olaparib in vitro and significantly delayed tumor progression in vivo. Pyruvate rescue confirms ROS‐dependent activity.
Nicolas Gordon   +13 more
wiley   +1 more source

Decreased vitamin B 12 and folic acid concentrations in acne patients after isotretinoin therapy: A controlled study

open access: yesIndian Journal of Dermatology, 2014
Background: Oral isotretinoin treatment might influence the levels of vitamin B 12 and folic acid. Aims and Objectives: The aim of this study is to compare vitamin B 12 and folic acid levels in patients with moderate and severe acne vulgaris with those ...
Hilal Gökalp, I Bulur, M A Gürer
doaj   +1 more source

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