Results 31 to 40 of about 23,816,551 (357)

Effects of vitamin A combined with dexamethasone on airway epithelium structure and function in asthmatic mice

open access: yesDi-san junyi daxue xuebao, 2019
Objective To observe the effects of vitamin A combined with glucocorticoid on the structure and function of airway epithelium in asthmatic mice. Methods Sixty specific pathogen-free female C57bl/6 mice (6 to 8 weeks old) were randomized equally into ...
HU Jie   +5 more
doaj   +1 more source

Vitamin C—Sources, Physiological Role, Kinetics, Deficiency, Use, Toxicity, and Determination

open access: yesNutrients, 2021
Vitamin C (L-ascorbic acid) has been known as an antioxidant for most people. However, its physiological role is much larger and encompasses very different processes ranging from facilitation of iron absorption through involvement in hormones and ...
M. Doseděl   +10 more
semanticscholar   +1 more source

Spectrophotometric quantitation of antioxidant capacity through the formation of a phosphomolybdenum complex: specific application to the determination of vitamin E.

open access: yesAnalytical Biochemistry, 1999
A spectrophotometric method has been developed for the quantitative determination of antioxidant capacity. The assay is based on the reduction of Mo(VI) to Mo(V) by the sample analyte and the subsequent formation of a green phosphate/Mo(V) complex at ...
P. Prieto, M. Pineda, M. Aguilar
semanticscholar   +1 more source

The health effects of vitamin D supplementation: evidence from human studies

open access: yesNature Reviews Endocrinology, 2021
Vitamin D supplementation can prevent and cure nutritional rickets in infants and children. Preclinical and observational data suggest that the vitamin D endocrine system has a wide spectrum of skeletal and extra-skeletal activities.
R. Bouillon   +5 more
semanticscholar   +1 more source

Vitamin A – a scoping review for Nordic nutrition Recommendations 2023

open access: yesFood & Nutrition Research, 2023
Vitamin A refers to a group of fat-soluble compounds with retinol activity, including all-trans retinol and pro-vitamin A carotenoids. Bioactive compounds include retinal and all-trans retinoic acid with important functions in vision, immune function ...
Thomas Olsen, Ulf H. Lerner
doaj   +1 more source

Preparation and property evaluation of vitamin A cyclodextrin inclusion complex [PDF]

open access: yesITM Web of Conferences, 2022
Hydroxypropyl-β-cyclodextrin (HP-β-CD) is widely used in drug encapsulation and cosolvent of insoluble drugs, modified HP-β-CD derivatives may to make pH sensitive by introducing functional groups.
Wei Ning   +3 more
doaj   +1 more source

Role of Vitamin A in the Immune System

open access: yesJournal of Clinical Medicine, 2018
Vitamin A (VitA) is a micronutrient that is crucial for maintaining vision, promoting growth and development, and protecting epithelium and mucus integrity in the body.
Zhiyi Huang   +4 more
semanticscholar   +1 more source

Vitamin A and vitamin D regulate the microbial complexity, barrier function, and the mucosal immune responses to ensure intestinal homeostasis

open access: yesCritical reviews in biochemistry and molecular biology, 2019
Diet is an important regulator of the gastrointestinal microbiota. Vitamin A and vitamin D deficiencies result in less diverse, dysbiotic microbial communities and increased susceptibility to infection or injury of the gastrointestinal tract. The vitamin
M. Cantorna   +2 more
semanticscholar   +1 more source

Knowledge of the importance of Vitamin A and awareness of its deficiency among parents of preschool children: A hospital-based study

open access: yesJournal of Clinical Ophthalmology and Research, 2023
Purpose: The prevalence of Vitamin A deficiency (VAD) is the highest in India among the South Asian countries. Suspected causes for this are insufficient dietary intake, lack of education, and a poor monitoring and surveillance system.
Samira Davalbhakta, Satish Shitole
doaj   +1 more source

Vitamin A and Pregnancy: A Narrative Review

open access: yesNutrients, 2019
Vitamin A is a crucial micronutrient for pregnant women and their fetuses. In addition to being essential for morphological and functional development and for ocular integrity, vitamin A exerts systemic effects on several fetal organs and on the fetal ...
Sabina Bastos Maia   +6 more
semanticscholar   +1 more source

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