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https://www.readbyqxmd.com/read/28335380/vitamin-e-nicotinate
#1
REVIEW
Kimbell R Duncan, Yuichiro J Suzuki
Vitamin E refers to a family of compounds that function as lipid-soluble antioxidants capable of preventing lipid peroxidation. Naturally occurring forms of vitamin E include tocopherols and tocotrienols. Vitamin E in dietary supplements and fortified foods is often an esterified form of α-tocopherol, the most common esters being acetate and succinate. The vitamin E esters are hydrolyzed and converted into free α-tocopherol prior to absorption in the intestinal tract. Because its functions are relevant to many chronic diseases, vitamin E has been extensively studied in respect to a variety of diseases as well as cosmetic applications...
March 13, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28331417/%C3%AE-tocotrienol-inhibits-tgf-%C3%AE-1-induced-contractile-phenotype-expression-of-human-airway-smooth-muscle-cells
#2
Takehito Fukushima, Akira Yamasaki, Tomoya Harada, Hiroki Chikumi, Masanari Watanabe, Ryota Okazaki, Miki Takata, Yasuyuki Hasegawa, Jun Kurai, Masaaki Yanai, Akihiro Yamamoto, Yuriko Sueda, Andrew J Halayko, Eiji Shimizu
BACKGROUND: Tocotrienols, members of the vitamin E family, exist in four different isoforms (α, β, γ and δ tocotrienol) that have can be protective against brain damage, as well as having anticancer effects in vivo and in vitro. We have shown that γ-tocotrienol inhibits human airway smooth muscle cell proliferation and migration induced by platelet-derived growth factor (PDGF)-BB by suppressing RhoA activation. In this study, we tested whether γ-tocotrienol modulates transforming growth factor (TGF) -β-induced induction of human airway smooth muscle (ASM) into a contractile phenotype and concomitant synthesis of extracellular matrix proteins...
March 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28327426/current-strategies-for-vitamin-e-biofortification-of-crops
#3
REVIEW
Laurent Mène-Saffrané, Sébastien Pellaud
Vitamin E refers to four tocopherols and four tocotrienols that are exclusively synthesized by photosynthetic organisms. While α-tocopherol is the most potent vitamin E compound, it is not the main form consumed since the composition of most major crops is dominated by γ-tocopherol. Nutritional studies show that populations of developed countries do not consume enough vitamin E and that a large proportion of individuals exhibit plasma α-tocopherol deficiency. Following the identification of vitamin E biosynthetic genes, several strategies including metabolic engineering, classic breeding and mutation breeding, have been undertaken to improve the vitamin E content of crops...
March 16, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28293383/vitamin-e-for-the-treatment-of-children-with-hepatitis-b-e-antigen-positive-chronic-hepatitis-a-systematic-review-and-meta-analysis
#4
Sirio Fiorino, Maria Letizia Bacchi-Reggiani, Paolo Leandri, Elisabetta Loggi, Pietro Andreone
AIM: To assess vitamin E efficacy, defined as its ability to induce hepatitis B e antigen (HBeAg) seroconversion, in children with HBeAg-positive persistent hepatitis. METHODS: In July 2016, we extracted articles published in MEDLINE and the Cochrane Library using the following search terms: "chronic hepatitis B", "children", "childhood", "therapy", "treatment", "vitamin E", "tocopherols", "tocotrienols". Only randomized controlled trials (RCTs) published in English language were collected...
February 28, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28274454/phytochemical-profiles-and-antioxidant-activity-of-brown-rice-varieties
#5
Er Sheng Gong, Shun Jing Luo, Tong Li, Cheng Mei Liu, Guo Wen Zhang, Jun Chen, Zi Cong Zeng, Rui Hai Liu
The phytochemical content and antioxidant activity of eight varieties of brown rice (BR) are reported. The total phenolic contents of BR ranged from 72.45 to 120.13mg of gallic acid equiv./100g. The phenolics from bound fraction contributed 40.6-50.2% of the total phenolic content. The total flavonoid contents of BR ranged from 75.90 to 112.03mg catechin equiv./100g. The flavonoids from the bound fraction contributed 26.9-48.2% of total flavonoids. Trans-ferulic acid was the predominant phenolic acid in BR...
July 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28267913/ultrasonic-removal-of-mucilage-for-pressurized-liquid-extraction-of-omega-3-rich-oil-from-chia-seeds-salvia-hispanica-l
#6
Natalia Castejón, Pilar Luna, Francisco J Señoráns
Chia (Salvia hispanica L.) seeds contain an important amount of edible oil rich in omega-3 fatty acids. Fast and alternative extraction techniques based on polar solvents, such as ethanol or water, have become relevant for oil extraction in recent years. However, chia seeds also contain a large amount of soluble fiber or mucilage, which makes difficult an oil extraction process with polar solvents. For that reason, the aim of this study was to develop a gentle extraction method for mucilage in order to extract chia oil with polar solvents using pressurized liquids and compare with organic solvent extraction...
March 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28243354/tocotrienol-rich-fraction-ameliorates-antioxidant-defense-mechanisms-and-improves-replicative-senescence-associated-oxidative-stress-in-human-myoblasts
#7
Shy Cian Khor, Wan Zurinah Wan Ngah, Yasmin Anum Mohd Yusof, Norwahidah Abdul Karim, Suzana Makpol
During aging, oxidative stress affects the normal function of satellite cells, with consequent regeneration defects that lead to sarcopenia. This study aimed to evaluate tocotrienol-rich fraction (TRF) modulation in reestablishing the oxidative status of myoblasts during replicative senescence and to compare the effects of TRF with other antioxidants (α-tocopherol (ATF) and N-acetyl-cysteine (NAC)). Primary human myoblasts were cultured to young, presenescent, and senescent phases. The cells were treated with antioxidants for 24 h, followed by the assessment of free radical generation, lipid peroxidation, antioxidant enzyme mRNA expression and activities, and the ratio of reduced to oxidized glutathione...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28224159/rice-bran-constituents-immunomodulatory-and-therapeutic-activities
#8
REVIEW
Ho-Young Park, Kwang-Won Lee, Hee-Don Choi
Rice bran, one of the most abundant and valuable byproducts produced during the rice milling process, is of steadily growing interest in recent years due to its potential health benefits. Evidence is rapidly accumulating for the beneficial effects of nutraceuticals. However, the potential benefits of rice bran are found in several of its bioactive ingredients including oils, polysaccharides, proteins, and micronutrients. In addition, a significant advantage of rice bran is that it contains more than 100 antioxidants and several categories of bioactive phytonutrients, such as polyphenols, phytosterols, tocotrienols, γ-oryzanol, B vitamins, minerals, and trace minerals...
February 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28212283/the-effects-of-tocotrienol-and-lovastatin-co-supplementation-on-bone-dynamic-histomorphometry-and-bone-morphogenetic-protein-2-expression-in-rats-with-estrogen-deficiency
#9
Kok-Yong Chin, Saif Abdul-Majeed, Norazlina Mohamed, Soelaiman Ima-Nirwana
Both tocotrienol and statins are suppressors of the mevalonate pathway. Supplementation of tocotrienol among statin users could potentially protect them against osteoporosis. This study aimed to compare the effects of tocotrienol and lovastatin co-supplementation with individual treatments on bone dynamic histomorphometric indices and bone morphogenetic protein-2 (BMP-2) gene expression in ovariectomized rats. Forty-eight female Sprague-Dawley rats were randomized equally into six groups. The baseline was sacrificed upon receipt...
February 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28165404/chromatographic-separation-of-vitamin-e-enantiomers
#10
REVIEW
Ju-Yen Fu, Thet-Thet Htar, Leanne De Silva, Doryn Meam-Yee Tan, Lay-Hong Chuah
Vitamin E is recognized as an essential vitamin since its discovery in 1922. Most vegetable oils contain a mixture of tocopherols and tocotrienols in the vitamin E composition. Structurally, tocopherols and tocotrienols share a similar chromanol ring and a side chain at the C-2 position. Owing to the three chiral centers in tocopherols, they can appear as eight different stereoisomers. Plant sources of tocopherol are naturally occurring in the form of RRR while synthetic tocopherols are usually in the form of all-racemic mixture...
February 4, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28145432/succinate-ester-derivative-of-%C3%AE-tocopherol-enhances-the-protective-effects-against-60-co-%C3%AE-ray-induced-hematopoietic-injury-through-granulocyte-colony-stimulating-factor-induction-in-mice
#11
Zhong-Tang Li, Li-Mei Wang, Li-Rong Yi, Chao Jia, Fan Bai, Ren-Jun Peng, Zu-Yin Yu, Guo-Lin Xiong, Shuang Xing, Ya-Jun Shan, Ri-Fang Yang, Jun-Xing Dong, Yu-Wen Cong
α-tocopherol succinate (α-TOS), γ-tocotrienol (GT3) and δ-tocotrienol (DT3) have drawn large attention due to their efficacy as radioprotective agents. α-TOS has been shown to act superior to α-tocopherol (α-TOH) in mice by reducing lethality following total body irradiation (TBI). Because α-TOS has been shown to act superior to α-tocopherol (α-TOH) in mice by reducing lethality following total body irradiation (TBI), we hypothesized succinate may be contribute to the radioprotection of α-TOS. To study the contributions of succinate and to identify stronger radioprotective agents, we synthesized α-, γ- and δ-TOS...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28137215/targeting-cancer-stem-cells-for-chemoprevention-of-pancreatic-cancer
#12
Dharmalingam Subramaniam, Gaurav Kaushik, Prasad Dandawate, Shrikant Anant
Pancreatic ductal adenocarcinoma is one of the deadliest cancers worldwide and the fourth leading cause of cancer-related deaths in United States. Regardless of the advances in molecular pathogenesis and consequential efforts to suppress the disease, this cancer remains a major health problem in United States. By 2030, the projection is that pancreatic cancer will be climb up to be the second leading cause of cancer-related deaths in the United States. Pancreatic cancer is a rapidly invasive and highly metastatic cancer, and does not respond to standard therapies...
January 26, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28135396/chemical-composition-analysis-sensory-and-feasibility-study-of-tree-peony-seed
#13
Yingyi Mao, Jigang Han, Fang Tian, Xue Tang, Yonghong Hu, Yan Guan
Eight wild species in Sect. Moutan DC (tree peony) of the genus Paeonia grown in natural habitats and 1 cultivated specie were investigated to analyze their fatty acid and bioactive phenolic compound profiles. For fatty acid composition, P. ludlowii contained the lowest α-linolenic acid (27.68%) and P. jishanensis contained the highest (51.96 %) content of the 9 species. For phenolic compounds, P. qiui contained the highest resveratrol (2.12 mg/g), P. delavayi contained the highest β-gentiobiosylpaeoniflorin (26...
January 30, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28095736/development-of-multifunctional-foods
#14
Koji Yamada
Foods contain various biologically active substances with extent physiological effects. Among them, some substances, such as dietary fibers, polyunsaturated fatty acids, and antioxidants, exert multiple activities. In addition, combinational uses of some components, such as sesamin and α-tocopherol, enhance their biological effects each other. The expression of multiple effect leads to the production of multifunctional foods which prevent the occurrence of various diseases. Furthermore, synergic effects between biologically active substances allow us to decrease the dose of each component, which lead to the improvement of safety and reduction of production cost of multifunctional foods...
January 18, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28093324/synthesis-characterization-and-in-vitro-antitumor-activity-of-the-polyethylene-glycol-350-and-1000-succinate-derivatives-of-the-tocopherol-and-tocotrienol-isomers-of-vitamin-e
#15
Ahmed Abu-Fayyad, Sami Nazzal
Vitamin E refers to a group of saturated tocopherol (T) isomers and the biologically more active unsaturated tocotrienol (T3) isomers. PEGylated α-tocopherol, commercially known as Vitamin E TPGS, has been used as an emulsifier and therapeutic agent for children with vitamin E deficiency. Limited information, however, is available about the PEG conjugates of the tocotrienol isomers of vitamin E. The current work was therefore undertaken to synthesize and characterize the water soluble polyethylene glycol (PEG 350 and 1000) derivatives of T and T3...
March 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28087759/separation-of-vitamin-e-on-a-100-%C3%A3-phenogel-column
#16
Salisa Chumsantea, Kornkanok Aryusuk, Supathra Lilitchan, Narumon Jeyashoke, Kanit Krisnangkura
The effect of π-electrons and hydroxyl group on the separations of vitamin E on a swelling-controlled polystyrene-divinylbenzene (Phenogel) column using toluene/isooctane as the mobile phase was investigated. The effect of the π-electrons was demonstrated in the baseline separation of α-tocopherol and α-tocotrienol on a 100-Å Phenogel column. In addition, baseline separation of α-, (β- + γ-)- and δ-tocopherol could be achieved on this column. The separation mechanism of these isomers are due to the difference in the interactions between the hydroxyl group on the chromanol ring of each tocopherol and the gel matrix caused by the steric hindrance of methyl group(s)...
February 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28056572/biochemical-characterization-anti-inflammatory-properties-and-ulcerogenic-traits-of-some-cold-pressed-oils-in-experimental-animals
#17
Faten M Ibrahim, Hanan Naeim Attia, Yousreya Aly Aly Maklad, Kawkab A Ahmed, Mohamed F Ramadan
CONTEXT: Cold-pressed oils (CPO) are commercially available in the market and characterized by their health-promoting properties. OBJECTIVE: Clove oil (CLO), coriander seed oil (COO) and black cumin oil (BCO) were evaluated for their bioactive lipids. Pharmacological screening was performed to evaluate acute toxicity, anti-inflammatory and ulcerogenic effects as well as histopathological changes in tissues of albino rats fed with CPO. MATERIALS AND METHODS: Fatty acids, tocols and total phenolics were analyzed...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28029115/development-of-orally-administered-%C3%AE-tocotrienol-gt3-nanoemulsion-for-radioprotection
#18
Grace A Ledet, Shukla Biswas, Vidya P Kumar, Richard A Graves, Demaurian M Mitchner, Taylor M Parker, Levon A Bostanian, Sanchita P Ghosh, Tarun K Mandal
The purpose of this study was two-fold: (1) to formulate γ-tocotrienol (GT3) in a nanoemulsion formulation as a prophylactic orally administered radioprotective agent; and (2) to optimize the storage conditions to preserve the structural integrity of both the formulation and the compound. γ-tocotrienol was incorporated into a nanoemulsion and lyophilized with lactose. Ultra performance liquid chromatography-mass spectroscopy (UPLC-MS) was used to monitor the chemical stability of GT3 over time, the particle size and ζ potential, and scanning electron microscopy (SEM) were used to study the physical stability of the nanoemulsion...
December 24, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28011809/safety-and-efficacy-of-tocotrienol-supplementation-for-bone-health-in-postmenopausal-women-protocol-for-a-dose-response-double-blinded-placebo-controlled-randomised-trial
#19
Chwan-Li Shen, Huanbiao Mo, Shengping Yang, Shu Wang, Carol K Felton, Michael D Tomison, Ima Nirwana Soelaiman
INTRODUCTION: Osteoporosis is a major health concern in postmenopausal women, and oxidative stress contributes to the development of bone loss. Cellular studies and ovariectomised rat model mimicking bone loss in postmenopausal women show the bone-protective effect of tocotrienols (TTs) with antioxidant capability. We aim to access the safety and efficacy of TT consumption for bone health in postmenopausal women. METHODS AND ANALYSIS: In this 12-week randomised double-blinded placebo-controlled trial for the effects of dietary TT supplementation in postmenopausal women, postmenopausal women aged 45 years and older with at least 1 year after menopause and bone mineral density T-score at the spine and/or hip 2...
December 23, 2016: BMJ Open
https://www.readbyqxmd.com/read/27993600/tumor-regression-after-intravenous-administration-of-targeted-vesicles-entrapping-the-vitamin-e-%C3%AE-tocotrienol
#20
Reatul Karim, Sukrut Somani, Majed Al Robaian, Margaret Mullin, Rumelo Amor, Gail McConnell, Christine Dufès
The therapeutic potential of tocotrienol, a member of the vitamin E family of compounds with potent in vitro anti-cancer properties, is limited by its inability to specifically reach tumors following intravenous administration. The purpose of this study is to determine whether a novel tumor-targeted vesicular formulation of tocotrienol would suppress the growth of A431 epidermoid carcinoma and B16-F10 melanoma in vitro and in vivo. In this work, we demonstrated that novel transferrin-bearing multilamellar vesicles entrapping α-T3 resulted in a dramatically improved (by at least 52-fold) therapeutic efficacy in vitro on A431 cell line, compared to the free drug...
December 18, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
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