• The purpose of this study was to assess the effects of long-term daily supplementation with beta-carotene (50 mg/d) on circulating concentrations of other carotenoids, retinol, and alpha-tocopherol over time. (nih.gov)
  • Supplementation with beta-carotene produced a persistent 9- to 10-fold increase in median plasma beta-carotene concentrations (225 nmol/L at baseline to 2255 nmol/L at 3 mo) and a persistent 2-fold increase in median plasma alpha-carotene concentrations (45 nmol/L at baseline to 95 nmol/L at 3 mo). (nih.gov)
  • Up to 5 y of daily supplementation with beta-carotene increased circulating concentrations of alpha- and beta-carotene, but did not alter concentrations of lycopene, lutein/zeaxanthin, retinol, or alpha-tocopherol. (nih.gov)
  • Supplementation with gamma-tocopherol could alleviate premenstrual symptoms (PMS), according to a new study from Japanese researchers. (nutraingredients.com)
  • Second, it was investigated if an increase in plasma β -carotene concentrations by RPO supplementation modulates blood levels of retinol, α -tocopherol, and other carotenoids. (hindawi.com)
  • Effect of oral supplementation with D-alpha-tocopherol on the vitamin E content of human low density lipoproteins and resistance to oxidation. (vitalraadet.dk)
  • Lower plasma alpha-carboxyethyl-hydroxychroman after deuterium-labeled alpha-tocopherol supplementation suggests decreased vitamin E metabolism in smokers. (oregonstate.edu)
  • After 6 d of supplementation, plasma d3- and d6-alpha-tocopherol concentrations did not differ significantly between groups. (oregonstate.edu)
  • Maternal vitamin E supplementation increases the concentration of vitamin E in colostrum and transition milk (Keikha 2021, Melo 2017, Pires 2016, Clemente 2015) , but not in mature milk (Pires 2016) and no relationship has been found between diet and the concentration of α-tocopherol in breastmilk (Jiang 2016) , although higher levels of vitamin E in breast milk were associated with a higher intake of polyunsaturated fatty acids. (e-lactancia.org)
  • 2013. γ-Tocopherol-rich supplementation additively improves vascular endothelial function during smoking cessation. . (oregonstate.edu)
  • Previously, we showed that diabetic monocytes produce increased superoxide anion (O 2 − ), and α-tocopherol (AT) supplementation decreases this. (diabetesjournals.org)
  • According to most scientists, alpha-tocopherol (one form of vitamin E) supplementation is useless. (ergo-log.com)
  • Concentrations of retinol, alpha-tocopherol, lycopene, and lutein/zeaxanthin were not affected by supplemental beta-carotene. (nih.gov)
  • Carotenoids, retinol, and α -tocopherol were measured in plasma at baseline and after intervention. (hindawi.com)
  • Plasma β -carotene, retinol, and α -carotene of these patients increased, but plasma concentrations of other carotenoids and α -tocopherol as well as concentrations of β -carotene, lycopene, α -tocopherol, and vitamin C in BMC remained unchanged. (hindawi.com)
  • Serum concentrations of alpha-tocopherol, beta-carotene, and retinol preceding the diagnosis of rheumatoid arthritis and systemic lupus erythematosus. (vitalraadet.dk)
  • However, no significant differences and no significant correlation were found in serum retinol, alpha- and gamma-tocopherols and other carotenoids in PD patients. (naturalproductsinsider.com)
  • 7 Bieri J G, Tolliver T J, Catignani G L. Simultaneous determination of retinol and α tocopherol in serum & plasma by liquid chromatography. (thieme-connect.com)
  • The aim of the study was to compare plasmatic concentrations of retinol, β-carotene, licopen and α-tocopherol between mothers and their infants. (bvsalud.org)
  • HPLC was used for retinol, α-carotene, licopen and α-tocopherol analysis. (bvsalud.org)
  • Plasmatic concentrations in group 1 of mothers were greater for retinol (p = 0.0034) and α-tocopherol (p = 0.0279). (bvsalud.org)
  • In both newborn groups concentration of retinol, α-tocopherol and copper were quite similar and there was no clearly detectable licopen and 2 carotene. (bvsalud.org)
  • In both, retinol, α-tocopherol and cupper showed larger concentration in mothers than in newborns (respectively p = 0.0003 and p = 0.0001). (bvsalud.org)
  • High doses of beta-carotene, a lipid-soluble nutrient, may affect the plasma concentrations of other lipid-soluble nutrients. (nih.gov)
  • Interactions between α-tocopherol, polyunsaturated fatty acids, and lipoxygenases during embryogenesis. (oregonstate.edu)
  • Influence of deficit irrigation strategies on fatty acid and tocopherol concentration of almond (Prunus dulcis). (nuthealth.org)
  • The effects of deficit irrigation on almond fatty acid and tocopherol levels were studied in a field trial. (nuthealth.org)
  • The concentrations of those compounds were satisfactorily retained after repeated use of oil and the oil extracted from the fried chips was found to contain the same concentrations of fatty acids as frying oil. (bl.uk)
  • The relative enrichment of skin sebaceous gland lipids with deuterium-labeled α-tocopherol was compared with plasma enrichment to evaluate the delivery of vitamin E to skin. (oregonstate.edu)
  • Smokers and nonsmokers (n = 10 per group) were supplemented with deuterium-labeled alpha-tocopheryl acetates (75 mg each d3-RRR-alpha-tocopheryl and d6-all-rac-alpha-tocopheryl acetate) from day -6 to day -1, and plasma tocopherols and CEHCs were measured (day -6 through day 17). (oregonstate.edu)
  • Beta, gamma and delta tocopherol are also natural. (e-lactancia.org)
  • 2005. Alpha-tocopherol modulates Cyp3a expression, increases gamma-CEHC production, and limits tissue gamma-tocopherol accumulation in mice fed high gamma-tocopherol diets. . (oregonstate.edu)
  • 5-nitro-gamma-tocopherol increases in human plasma exposed to cigarette smoke in vitro and in vivo. (oregonstate.edu)
  • Sciatic nerve concentration of alpha tocopherol was as high as that of cerebral cortex, and the former also contained measurable amounts of gamma tocopherol. (cdc.gov)
  • It must be noted that pecans are especially rich in one form of vitamin E - gamma tocopherol. (healthjockey.com)
  • We found that eating pecans increased levels of gamma tocopherol concentrations in the blood and subsequently reduced a marker of lipid oxidation," adds Dr. Haddad. (healthjockey.com)
  • They used scans to determine whether the study participants had gallstones and analyzed the concentration of alpha and gamma tocopherol in their blood. (ergo-log.com)
  • Alpha and gamma tocopherol are the two main forms of vitamin E in the German diet. (ergo-log.com)
  • The more alpha and gamma tocopherol was present in the blood of the study participants, the less often the researchers found gallstones in them. (ergo-log.com)
  • Since the spinal cord and peripheral nerves are vulnerable to the effects of vitamin E deficiency, vitamin E concentrations in various discrete regions of these parts of the nervous system of the rat were determined. (cdc.gov)
  • Furthermore, as acrylamide toxicity and vitamin E deficiency share some neuropathological features, tissue vitamin E concentrations in acrylamide -treated rats were also studied. (cdc.gov)
  • In addition β -carotene, lycopene, α -tocopherol, and vitamin C were measured in buccal mucosa cells (BMC) to determine the influence of RPO on antioxidant tissue levels. (hindawi.com)
  • Finally, we investigated if an increase of plasma β -carotene has effects on tissue concentrations of antioxidants by measuring β -carotene, lycopene, α -tocopherol, and vitamin C in buccal mucosa cells (BMC) in patients with CF. (hindawi.com)
  • α-Tocopherol is a lipid-soluble form of Vitamin E important to human health as an antioxidant. (fishersci.com)
  • Therefore, the mechanism of increased alpha-tocopherol disappearance in smokers likely operates through oxidation pathways, which is consistent with alpha-tocopherol's antioxidant function. (oregonstate.edu)
  • Patients with cystic fibrosis (CF) show decreased plasma concentrations of antioxidants due to malabsorption of lipid soluble vitamins and consumption by chronic pulmonary inflammation. (hindawi.com)
  • α-Tocopherol adipose tissue stores are depleted after burn injury in pediatric patients. (oregonstate.edu)
  • Vitamin E concentrations in the majority of nervous tissue samples remained unchanged with acrylamide treatment. (cdc.gov)
  • To copherol (T) and tocopherol acetate (T A) are widely used ingredients in cosmetics. (researchgate.net)
  • The high concentration of α-tocopherol in colostrum causes breastfed newborns to reach adult plasma levels of vitamin E. (initially one third of them) in 4 to 6 days. (e-lactancia.org)
  • Immediately on completion of the race transient elevations occurred in the concentrations of circulating neutrophils, monocytes and platelets, IL-6, cortisol, CRP, and creatine kinase in both groups. (thieme-connect.com)
  • These concentrations are subsequently diluted by mine air resulting in lower concentrations in the workplace air. (cdc.gov)
  • Depletion of alpha-tocopherol in human atherosclerotic lesions. (vitalraadet.dk)
  • Alpha-tocopherol: Effect on plasma lipoproteins in hypercholesterolemic patients. (vitalraadet.dk)
  • 34. Fahn S. A pilot trial of high-dose alpha-tocopherol and ascorbate in early Parkinson's disease. (vitalraadet.dk)
  • We hypothesized that smokers would have less alpha-tocopherol available and consequently lower plasma alpha-carboxyethyl-hydroxychroman (alpha-CEHC), the alpha-tocopherol metabolite produced by a cytochrome P450-mediated process. (oregonstate.edu)
  • 0.05), and smokers had lower maximal d3-alpha-CEHC (P = 0.004) and d6-alpha-CEHC (P = 0.0006) concentrations. (oregonstate.edu)
  • Notably, 2.9-4.7 times as much alpha-CEHC was produced from all-rac-alpha-tocopherol than from RRR-alpha-tocopherol. (oregonstate.edu)
  • 0.05) the plasma total, d6-, or d3-alpha-CEHC concentrations that nonsmokers did given similar alpha-tocopherol concentrations. (oregonstate.edu)
  • Smoking did not increase alpha-tocopherol disappearance through P450-mediated tocopherol metabolism. (oregonstate.edu)
  • Consequently, evaluating the molecular mechanism or mechanisms responsible for tocopherol metabolism under conditions of oxidative stress and the mechanisms that regulate alpha-tocopherol status is warranted. (oregonstate.edu)
  • Alpha tocopherol may be slightly decreased in mature milk after high-risk pregnancies (Sámano 2017) . (e-lactancia.org)
  • The association between alpha-tocopherol and gallstones was the most convincing. (ergo-log.com)
  • Colostrum is the first secretion of the mammary gland from 2 to 4 days after calving and differs from milk because of the greater amounts of fat, protein, minerals and vitamins, in addition to a high concentration of immunoglobulins that provide passive immunity to the newborn. (scielo.br)
  • For some substances there is also a risk assessment made on the basis of concentrations measured in the environment in Sweden and efficacy studies with high quality. (janusinfo.se)
  • Generally, avenanthramide concentration was a bit lower than recorded by previous studies whereas tocol concentration was a bit higher. (slu.se)
  • 2015. α-Tocopherol bioavailability is lower in adults with metabolic syndrome regardless of dairy fat co-ingestion: a randomized, double-blind, crossover trial. . (oregonstate.edu)
  • Although the presence of a catalyst, in either form, will increase the feasibility of the filter by allowing regeneration at lower exhaust temperatures, it may also result in an increase in the concentration of NO 2 in the exhaust. (cdc.gov)
  • The α-tocopherol transfer protein is essential for vertebrate embryogenesis. (oregonstate.edu)
  • Vitamin E concentrations decreased from cerebral cortex to spinal cord with no concentration gradients between different levels of the spinal cord. (cdc.gov)
  • 1981. Effect of oximes and atropine on the concentration of cerebral glycogen and blood glucose in malathion-treated rats. (cdc.gov)
  • The first week's milk of mothers of premature babies and of children over 4kg at birth has a higher content of α-tocopherol (Grilo 2013, Gross 1985) . (e-lactancia.org)
  • They also found that blood levels of tocopherols were higher after participants were on the pecan diet. (healthjockey.com)
  • Contrarily, the levels of α-tocopherol were higher at the RI of 1.08 and 1.96 (64.57 and 57.75 mg/kg, respectively). (cabi.org)
  • This round-up looks at the latest findings from health and nutrition research, including the benefit of eicosapentaenoic acid (EPA) in lowering cardiovascular disease risk among diabetic patients, γ-tocopherol in reducing premenstrual symptoms such as. (nutraingredients.com)
  • These symptoms usually appear en masse. (wikipedia.org)
  • The most important component are the tocopherols, the α-tocopherol being the most active and widely distributed in nature. (e-lactancia.org)
  • Pre-race vitamin C concentrations in the supplemented group were unchanged after the race (118.2 ± 15.9 and 115.9 ± 11.9 µmol/l) while an increase was observed in the placebo group immediately post-race (85.8 ± 11.9 to 107.4 ± 18.8 µmol/l), with a return to pre-race values after 24 hours. (thieme-connect.com)
  • However, the use of diesel particulate filters can cause up to a three-fold increase in the concentrations of NO 2 emitted from the tailpipe, with a corresponding increase in the concentration of NO 2 in the work area. (cdc.gov)
  • However, recent NIOSH studies have shown a two- to three-fold increase in NO 2 concentrations in mine air, resulting from the use of highly catalyzed filter systems. (cdc.gov)
  • The concentration of vitamin E (α-tocopherol) is highest in colostrum (6.5 to 15 mg/L) (Xue 2017, Melo 2017) and drops to half/a third in transition milk and a third/a fifth in mature milk (Xue 2017, Silva 2017, Jiang 2016, Lima 2014) . (e-lactancia.org)
  • Tetraphenylphosphonium and α-tocopherol had little inhibitory effect. (aspetjournals.org)
  • 3. environmental risk assessments for certain substances based on concentrations measured in the environment in Sweden and effect studies. (janusinfo.se)
  • Une corrélation significative positive a été trouvée entre la vitamine C plasmatique et l'apport alimentaire en vitamine C. Le taux de vitamine C plasmatique et leucocytaire était significativement moins élevé dans le groupe des patients asthmatiques. (who.int)