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... The binding mechanisms of alpha-lactalbumin (ALa) with retinol (VA) and storage stability of their complex after pre-or post-acidification (pH 3.0) were investigated and compared by using multi-spectroscopic approaches. Fluorescence quenching results showed that combination of ALa with VA presented a typically static quenching mode at pH 3.0 with pre- or post-acidification. And the binding constan ...
vitaminA, etc ; Udotea; X-radiation; ascorbic acid; food composition; food security; high performance liquid chromatography; macroalgae; silicon; spectroscopy; Indian Ocean; Mauritius; Show all 12 Subjects
Abstract:
... Oceans cover more than 70 % the Earth’s surface and thus seaweeds and algae have the potential to become major sources of nutrients in the future for the expanding world population. The profiling of vitamins, minerals and heavy metals in aqueous green, red and brown seaweeds extracts from the Mascarene Islands Mauritius and Rodrigues in the Indian Ocean has been carried out for the first time. The ...
vitaminA, etc ; Artemia salina; Oryzias melastigma; Tetraselmis; Thalassiosira pseudonana; algae; algae culture; algal blooms; aquaculture industry; biomass; blue light; fish; food chain; live feeds; mariculture; metabolites; oxidoreductases; regulator genes; teratogenicity; Show all 19 Subjects
Abstract:
... Algae are often used as live feed for aquatic animals and widely used in the aquaculture industry. Both algal cultivation and algal blooms can lead to algal cell aggregation. High-biomass algae will lead to the accumulation of toxic and harmful substances if they are present in algal cells, thus adversely affecting the environment or the food chain. Retinoids have been detected in algal cells, and ...
vitaminA; vitaminA deficiency, etc ; blood serum; diabetes; homeostasis; liver; mice; phenotype; photoreceptors; Show all 9 Subjects
Abstract:
... Emerging evidence indicates that diabetes disturbs photoreceptor function and vitamin A homeostasis. However, the biochemical basis of this phenotype is not well established. Here, we compared the effects of streptozotocin-induced diabetes in wild-type (WT) mice and Stra6⁻/⁻ mice, a mouse model for ocular vitamin A deficiency. After 8 weeks, diabetes increased serum retinyl esters in mice of both ...
Danielle S. Bezerra; Andressa T. A. de Melo; Kátia C. de A. N. de Oliveira; Karoline Q. M. A. de Araújo; Monalisa S. M. de F. Medeiros; Flávia A. P. S. dos Santos; Jeane F. P. Medeiros; Mayara S. R. Lima; Ana Gabriella C. L. da Silva; Karla Danielly da S. Ribeiro; Roberto Dimenstein; Mônica M. Osório
vitaminA; vitaminA deficiency, etc ; breast milk; colostrum; equations; high performance liquid chromatography; risk; Show all 7 Subjects
Abstract:
... Maternal vitamin A (VA) supplementation in risk areas for Vitamin A deficiency (VAD) was launched to improve the level of this nutrient in nursing mothers and in their breast milk. This longitudinal and randomized study aimed to evaluate the levels of retinol in breast milk after supplementation with VA in varying amounts (200,000 IU or 400,000 IU) and different postpartum intervals. Women were di ...
Richard C. Baybutt; Joseph T. Standard; Daniel Dim; Tim Quinn; Hana Hamdan; Dingbo Lin; Kyle Kunz; Zachary S. Bomstein; Benjamin J. Estorge; Betty Herndon; Hamid Zia; Ahmad Mansour; Manesha Lankachandra; Agostino Molteni
vitaminA; vitaminA deficiency, etc ; cod liver oil; diet; metabolites; osteoblasts; osteoclasts; rats; retinoic acid; weanlings; Show all 10 Subjects
Abstract:
... Vitamin A plays a prominent role for maintaining optimal bone status, but its impact upon the bone in response to vitamin A deficiency is not well defined. The purpose of this study was to evaluate how replenishing vitamin A by either whole food cod liver oil (COD) or the active metabolite of vitamin A, retinoic acid (RA), altered bone thickness of vitamin A-deficient (VAD) rats. Weanling rats wer ...
... Flaviviruses, such as Dengue and Zika viruses, infect millions of people worldwide using mosquitos as vectors. In this issue of Cell, Zhang et al. reveal how these viruses manipulate the skin microbiome of infected hosts in a way that increases vector recruitment and viral spread. They propose vitamin A as a way to counteract the virus and decrease transmission. ...
... Vitamin A deficiency is a major health risk for infants and children in low- and middle-income countries. This scoping review identified, quantified, and mapped research for use in updating nutrient requirements and upper limits for vitamin A in children aged 0 to 48 months, using health-based or modelling-based approaches. Structured searches were run on Medline, EMBASE, and Cochrane Central, fro ...
... The risk of child vitamin A deficiency (VAD) in low and middle income countries (LMICs) begins during the age range of complementary feeding (6–24 months), when children are fed complementary foods (CFs) deficient in vitamin A. However, pumpkin, a source of provitamin A carotenoids (PVACs) is widely cultivated in LMICs, but underutilized as a complementary food. Moreover, when consumed by humans, ...
... Vitamin A is the first defined vitamin and is also known as an anti-inflammatory micronutrient. Although the primary biological function is preservation of epithelial tissue integrity, vision and growth, vitamin A also plays a role in immune system regulation. It is known that susceptibility to infections increases in developing countries due to vitamin A deficiency. Therefore, the purpose of this ...
... Micronutrient deficiency is a major problem affecting many people in developing countries who solely depend on maize as their single source of calories. Vitamin A deficiency is one of the health problems associated with micronutrient deficiency. It is caused by insufficient intake of food rich in vitamin A among vulnerable groups leading to impaired growth, reduced life span, and economic losses a ...
vitaminA, etc ; agriculture; milk; spring; summer; Italy; Show all 6 Subjects
Abstract:
... The aim of this study was to examine variations in cow milk composition as a function of breeding system and seasonality. This study was carried out in 16 dairy farms located in the Abruzzo region (Central Italy), equally distributed between farms that adopt grazing in the spring and summer months, and farms where the intensive system is exploited. Milk was sampled in all seasons in each of the fa ...
... PURPOSE: There are no representative estimates of vitamin A deficiency (VAD) and risk of vitamin A (VA) dietary inadequacy in Indian children and adolescents. To evaluate, from national surveys, the prevalence of VAD measured by serum retinol concentrations (< 0.7 µmol/L or < 20 µg/dL), and the risk of VA dietary inadequacy and excess intake beyond the tolerable upper limit (TUL). METHODS: Nationa ...
vitaminA, etc ; isomerization; lactic acid; pasta filata cheese; saponification; Show all 5 Subjects
Abstract:
... The isomerisation index, or degree of retinol isomerisation (DRI), i.e. the percentage ratio between 13-cis and all-trans retinol, could be used as process and product index in dairy products. To better investigate microbial influence on retinol isomerisation, retinol isomerisation and microbial levels have been monitored during the technological process and the storage of different “pasta filata” ...
... The systemic transport of dietary vitamin A/all-trans retinol bound to RBP4 into peripheral tissues for storage is an essential physiological process that continuously provides visual chromophore precursors to the retina under fasting conditions. This mechanism is critical for phototransduction, photoreceptor cell maintenance and survival, and in the support of visual function. While the membrane ...
vitaminA deficiency, etc ; confidence interval; public health; Niger; Somalia; Show all 5 Subjects
Abstract:
... Vitamin A deficiency (VAD) is one of the important public health issues worldwide. However, a detailed understanding of the incidence and disability-adjusted life years (DALYs) due to VAD in recent years is lacking. We aimed to estimate the incidence and DALYs of VAD at global, regional, and national levels in terms of sex, age, and socio-demographic index (SDI). Using data from the 2019 Global Bu ...
vitaminA; vitaminA deficiency, etc ; COVID-19 infection; absorption; cell culture; cystic fibrosis; enzymes; homeostasis; human health; intestines; night blindness; retinol-binding protein; vitamin E; Show all 13 Subjects
Abstract:
... N-[4-hydroxyphenyl]retinamide, commonly known as fenretinide, a synthetic retinoid with pleiotropic benefits for human health, is currently utilized in clinical trials for cancer, cystic fibrosis, and COVID-19. However, fenretinide reduces plasma vitamin A levels by interacting with retinol-binding protein 4 (RBP4), which often results in reversible night blindness in patients. Cell culture and in ...
Antonio J. Meléndez-Martínez; Anamarija I. Mandić; Filippos Bantis; Volker Böhm; Grethe Iren A. Borge; Mladen Brnčić; Anette Bysted; M. Pilar Cano; M. Graça Dias; Anjo Elgersma; Martina Fikselová; Javier García-Alonso; Daniele Giuffrida; Vanessa S. S. Gonçalves; Dámaso Hornero-Méndez; Kristina Kljak; Vera Lavelli; George A. Manganaris; Paula Mapelli-Brahm; Milan Marounek; Begoña Olmedilla-Alonso; María Jesús Periago-Castón; Adela Pintea; Jeremiah J. Sheehan; Vesna Tumbas Šaponjac; Magdaléna Valšíková-Frey; Lieven Van Meulebroek; Nora O’Brien
vitaminA, etc ; bioactive compounds; diet; food science; health promotion; humans; Show all 6 Subjects
Abstract:
... Carotenoids are isoprenoids widely distributed in foods that have been always part of the diet of humans. Unlike the other so-called food bioactives, some carotenoids can be converted into retinoids exhibiting vitamin A activity, which is essential for humans. Furthermore, they are much more versatile as they are relevant in foods not only as sources of vitamin A, but also as natural pigments, ant ...
... KEY MESSAGE: A gene controlling golden flesh trait in watermelon was discovered and fine mapped to a 39.08 Kb region on chromosome 1 through a forward genetic strategy, and Cla97C01G008760 (annotated as phytoene synthase protein, ClPsy1) was recognized as the most likely candidate gene. Vitamin A deficiency is a worldwide public nutrition problem, and β-carotene is the precursor for vitamin A synt ...
vitaminA deficiency, etc ; iodine deficiency; protein energy malnutrition; Bhutan; Mali; Zimbabwe; Show all 6 Subjects
Abstract:
... Low- and middle-income countries (LMICs) suffered the most from nutritional deficiencies (NDs). Although decades of efforts have reduced it, little is known about the changing trajectory of ND burden in LMICs. By extracting data of the Global Burden of Diseases, Injuries, and Risk Factors Study 2019, we calculated indicators of incidence and disability-adjusted life years (DALYs) to measure the bu ...