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https://www.readbyqxmd.com/read/29782986/antiglycation-study-of-hmg-r-inhibitors-and-tocotrienol-against-glycated-bsa-and-ldl-a-comparative-study
#1
Rabia Nabi, Sahir Sultan Alvi, Rizwan Khan, Shafeeque Ahmad, Saheem Ahmad, M Salman Khan
Non-enzymatic glycation mediated advanced glycation end products (AGEs) generation results in the pathogenesis of diabetic complications and atherosclerotic cardiovascular disease (ASCVD) which is greatly influenced by 3-hydroxy-3-methyl-glutaryl Co-A reductase (HMG-R) activity. HMG-R inhibitors, statins, are well known for reducing mortality and morbidity of ASCVD in patients with diabetes due to their pleiotropic effects independent of cholesterol lowering. Due to distinct chemical structures, various statins may play important role in the inhibition of AGEs mediated pathologies...
May 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29775204/effects-of-%C3%AE-tocotrienol-on-ochratoxin-a-induced-nephrotoxicity-in-rats
#2
Sara Damiano, Luigi Navas, Patrizia Lombari, Serena Montagnaro, Iris M Forte, Antonio Giordano, Salvatore Florio, Roberto Ciarcia
Ochratoxin A (OTA), is a natural contaminant of the food chain worldwide involved in the development of different type of cancers in animals and humans. Several studies suggested that oxidative damage might contribute to increase the cytotoxicity and carcinogenicity capabilities of OTA. The aim of this study was to evaluate the possible protective effect of δ-tocotrienol (Delta), a natural form of vitamin E, against OTA-induced nephrotoxicity. Male Sprague-Dawley rats were treated with OTA and/or Delta by gavage for 14 days...
May 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29769046/%C3%AE-tocotrienol-induces-apoptosis-in-pancreatic-cancer-cells-by-upregulation-of-ceramide-synthesis-and-modulation-of-sphingolipid-transport
#3
Victoria E Palau, Kanishka Chakraborty, Daniel Wann, Janet Lightner, Keely Hilton, Marianne Brannon, William Stone, Koyamangalath Krishnan
BACKGROUND: Ceramide synthesis and metabolism is a promising target in cancer drug development. γ-tocotrienol (GT3), a member of the vitamin E family, orchestrates multiple effects that ensure the induction of apoptosis in both, wild-type and RAS-mutated pancreatic cancer cells. Here, we investigated whether these effects involve changes in ceramide synthesis and transport. METHODS: The effects of GT3 on the synthesis of ceramide via the de novo pathway, and the hydrolysis of sphingomyelin were analyzed by the expression levels of the enzymes serine palmitoyl transferase, ceramide synthase-6, and dihydroceramide desaturase, and acid sphingomyelinase in wild-type RAS BxPC3, and RAS-mutated MIA PaCa-2 and Panc 1 pancreatic cancer cells...
May 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29763912/-a-succinate-ether-derivative-of-tocotrienol-enhances-dickkopf-1-gene-expression-through-epigenetic-alterations-in-malignant-mesothelioma-cells
#4
Ayami Sato, Haruka Ueno, Momoka Fusegi, Saki Kaneko, Kakeru Kohno, Nantiga Virgona, Akira Ando, Yuko Sekine, Tomohiro Yano
BACKGROUND: Wnt signaling plays an essential role in tumor cell growth, including the development of malignant mesothelioma (MM). Epigenetic silencing of negative Wnt regulators leading to constitutive Wnt signaling has been observed in various cancers and warrants further attention. We have reported that a succinate ether derivative of α-tocotrienol (T3E) has potent cytotoxic effects in MM cells. Thus, in this study, we investigated whether the anti-MM effect of T3E could be mediated via the epigenetic alteration of the Wnt antagonist gene, Dickkopf-1 (DKK1)...
May 15, 2018: Pharmacology
https://www.readbyqxmd.com/read/29760331/some-strategies-for-utilization-of-rice-bran-functional-lipids-and-phytochemicals
#5
Phumon Sookwong, Sugunya Mahatheeranont
Rice bran contains a great amount of functional lipids and phytochemicals including γ-oryzanols, tocotrienols, and tocopherols. However, utilization of those compounds is limited and needs some proven guidelines for better implementation. We introduce some effective strategies for the utilization of rice functional lipids, including an introduction of pigmented rice varieties for better bioactive compounds, biofortification of rice tocotrienols, plasma technology for improving rice phytochemicals, supercritical CO2 extraction of high quality rice bran oil, and an example on the development of tocotrienol-fortified foods...
May 15, 2018: Journal of Oleo Science
https://www.readbyqxmd.com/read/29749323/effects-of-delta-tocotrienol-supplementation-on-liver-enzymes-inflammation-oxidative-stress-and-hepatic-steatosis-in-patients-with-nonalcoholic-fatty-liver-disease
#6
Muhammad Amjad Pervez, Dishad Ahmet Khan, Aamir Ijaz, Shamrez Khan
BACKGROUND/AIMS: Non-alcoholic fatty liver disease (NAFLD) is a growing public health problem worldwide and is associated with increased morbidity and mortality. Currently, there is no definitive treatment for this disease. δ-Tocotrienol has potent anti-inflammatory and antioxidant properties and may reduce liver injury in NAFLD. The present study aims to evaluate the efficacy and safety of δ-tocotrienol in the treatment of NAFLD. MATERIALS AND METHODS: The present study was a randomized, double-blind, placebo-controlled pilot study conducted in patients aged > 20 years, belonging to both sexes, having ultrasound-proven fatty liver disease, having a fatty liver index (FLI) of ≥ 60, and persistent elevation of alanine transaminase...
March 2018: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/29746786/vitamin-e-and-its-anticancer-effects
#7
Annette Abraham, Ajoe John Kattoor, Tom Saldeen, Jawahar L Mehta
Vitamin E is a lipid soluble vitamin comprising of eight natural isoforms, namely, α, β, δ, γ isoforms of tocopherol and α, β, δ, γ isoforms of tocotrienol. Many studies have been performed to elucidate its role in cancer. Until last decade, major focus was on alpha tocopherol and its anticancer effects. However, major clinical trials using alpha-tocopherol like SELECT trial and ATBC trial did not yield meaningful results. Hence there was a shift of focus to gamma-tocopherol, delta-tocopherol and tocotrienol...
May 10, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29708750/enantioselective-halo-oxy-and-halo-azacyclizations-induced-by-chiral-amidophosphate-catalysts-and-halo-lewis-acids
#8
Yanhui Lu, Hidefumi Nakatsuji, Yukimasa Okumura, Lu Yao, Kazuaki Ishihara
Catalytic enantioselective halocyclization of 2-alkenylphenols and enamides have been achieved through the use of chiral amidophosphate catalysts and halo-Lewis acids. DFT calculations suggested that the Lewis basicity of the catalyst played an important role in the reactivity and enantioselectivity. The resulting chiral halogenated chromans can be transformed to α-tocopherol, α-tocotrienol, Daedalin A and Englitazone in short steps. Furthermore, a halogenated product with an unsaturated side chain may provide polycyclic ad-ducts under radical cyclization conditions...
April 30, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29683099/identifying-potential-therapeutics-for-osteoporosis-by-exploiting-the-relationship-between-mevalonate-pathway-and-bone-metabolism
#9
Wan Nuraini Wan Hasan, Kok-Yong Chin, James Jam Jolly, Norzana Abd Ghafar, Ima Nirwana Soelaiman
BACKGROUND: Osteoporosis is a silent skeletal disease characterized by low bone mass and destruction of skeletal microarchitecture, leading to an increased fracture risk. This occurs due to an imbalance in bone remodelling, whereby the rate of bone resorption is greater than bone formation. Mevalonate pathway, previously known to involve in cholesterol synthesis, is an important regulatory pathway for bone remodelling. OBJECTIVE: This review aimed to provide an overview of the relationship between mevalonate pathway and bone metabolism, as well as agents which act through this pathway to achieve their therapeutic potential...
April 23, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29679925/tocotrienol-rich-fraction-supplementation-reduces-hyperglycemia-induced-skeletal-muscle-damage-through-regulation-of-insulin-signaling-and-oxidative-stress-in-type-2-diabetic-mice
#10
Heaji Lee, Yunsook Lim
Chronic hyperglycemia induces impairment of muscle growth and development of diabetes mellitus (DM). Since skeletal muscle is the major site for disposal of ingested glucose, impaired glucose metabolism causes imbalance between protein synthesis and degradation which adversely affects physical mobility. In this study, we investigated the effect of tocotrienol-rich fraction (TRF) supplementation on skeletal muscle damage in diabetic mice. Diabetes was induced by a high-fat diet with streptozotocin (STZ) injection (100 mg/kg) in male C57BL/6J mice...
March 21, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29674281/effects-of-tocotrienol-from-bixa-orellana-annatto-on-bone-histomorphometry-in-a-male-osteoporosis-model-induced-by-buserelin
#11
Nur-Vaizura Mohamad, Ima-Nirwana Soelaiman, Kok-Yong Chin
INTRODUCTION: Osteoporosis is a debilitating skeletal side effect of androgen deprivation therapy based on gonadotropin-releasing hormone (GnRH) agonist in men. Tocotrienol from Bixa orellana (annatto) has been demonstrated to offer protection against osteoporosis by exerting anabolic effects on bone. Thus, it may prevent osteoporosis among GnRH agonist users. OBJECTIVE: This study aimed to determine the effectiveness of annatto-tocotrienol on the bone turnover markers and bone histomorphometry in a model of male osteoporosis induced by buserelin (a GnRH agonist)...
April 16, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29644026/synergistic-apoptotic-effects-of-tocotrienol-isomers-and-acalypha-wilkesiana-on-a549-and-u87mg-cancer-cells
#12
Ibrahim Babangida Abubakar, Su-Wen Lim, Hwei-San Loh
Recent studies suggested that combined treatment approaches can be used to improve anticancer potency and circumvent the limitations of high-dose tocotrienols administration. Acalypha wilkesiana is a medicinal plant that has been used as an adjunct treatment for cancers in traditional medicine. Herein, the effects of single and combined treatments of β-, γ- and δ-tocotrienols and ethyl acetate extract (9EA) of Acalypha wilkesiana on lung (A549) and brain (U87MG) cancer cells were investigated. γ- and δ-tocotrienols exhibited higher potent antiproliferative effects against A549 (12...
March 2018: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/29642403/cebpd-is-essential-for-gamma-tocotrienol-mediated-protection-against-radiation-induced-hematopoietic-and-intestinal-injury
#13
Sudip Banerjee, Sumit K Shah, Stepan B Melnyk, Rupak Pathak, Martin Hauer-Jensen, Snehalata A Pawar
Gamma-tocotrienol (GT3) confers protection against ionizing radiation (IR)-induced injury. However, the molecular targets that underlie the protective functions of GT3 are not yet known. We have reported that mice lacking CCAAT enhancer binding protein delta ( Cebpd-/- ) display increased mortality to IR due to injury to the hematopoietic and intestinal tissues and that Cebpd protects from IR-induced oxidative stress and cell death. The purpose of this study was to investigate whether Cebpd mediates the radio protective functions of GT3...
April 6, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29618945/inducers-of-senescence-toxic-compounds-and-senolytics-the-multiple-faces-of-nrf2-activating-phytochemicals-in-cancer-adjuvant-therapy
#14
REVIEW
Marco Malavolta, Massimo Bracci, Lory Santarelli, Md Abu Sayeed, Elisa Pierpaoli, Robertina Giacconi, Laura Costarelli, Francesco Piacenza, Andrea Basso, Maurizio Cardelli, Mauro Provinciali
The reactivation of senescence in cancer and the subsequent clearance of senescent cells are suggested as therapeutic intervention in the eradication of cancer. Several natural compounds that activate Nrf2 (nuclear factor erythroid-derived 2-related factor 2) pathway, which is involved in complex cytoprotective responses, have been paradoxically shown to induce cell death or senescence in cancer. Promoting the cytoprotective Nrf2 pathway may be desirable for chemoprevention, but it might be detrimental in later stages and advanced cancers...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29617306/development-of-colorectal-targeted-dietary-supplement-tablets-containing-natural-purple-rice-bran-oil-as-a-colorectal-chemopreventive
#15
Busaban Sirithunyalug, Chalermpong Saenjum, Suporn Charumanee, Bhagavathi Sundaram Sivamaruthi, Chaiyavat Chaiyasut, Jakkapan Sirithunyalug, Pratchaya Tipduangta
Colorectal cancer occurs due to various factors. The important risks are dietary lifestyle and inflammatory bowel diseases, such as Crohn’s disease and ulcerative colitis. It has been found that the inhibitory enzyme cyclooxygenase-2 (COX-2) in the colorectal region can potentially reduce the risk of colorectal cancer. The present study investigated rice bran oil from natural purple rice bran, which exhibits antioxidant and anti-inflammatory activity. This study aimed to evaluate the bioactive compound content of natural purple rice bran oil (NPRBO) derived from native Thai purple rice and the anti-inflammatory activity of NPRBO in colorectal cancer cells, and to develop a colorectal delivery platform in the form of film-coated tablets...
April 4, 2018: Nutrients
https://www.readbyqxmd.com/read/29606130/proteasome-inhibitors-modulate-anticancer-and-anti-proliferative-properties-via-nf-kb-signaling-and-ubiquitin-proteasome-pathways-in-cancer-cell-lines-of-different-organs
#16
Asaf A Qureshi, Eleanor G Zuvanich, Dilshad A Khan, Shahida Mushtaq, Neerupma Silswal, Nilofer Qureshi
BACKGROUND: Cancer is second most common cause of death in the United State. There are over 100 different types of cancer associated with different human organs, predominantly breast, liver, pancreas, prostate, colon, rectum, lung, and stomach. We have recently reported properties of pro-inflammatory (for treatment of various types of cancers), and anti-inflammatory (for cardiovascular disease and diabetes) compounds. The major problem associated with development of anticancer drugs is their lack of solubility in aqueous solutions and severe side effects in cancer patients...
April 2, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29588572/effect-of-tocotrienol-from-bixa-orellana-annatto-on-bone-microstructure-calcium-content-and-biomechanical-strength-in-a-model-of-male-osteoporosis-induced-by-buserelin
#17
Nur-Vaizura Mohamad, Soelaiman Ima-Nirwana, Kok-Yong Chin
Background: Patients receiving androgen deprivation therapy experience secondary hypogonadism, associated bone loss, and increased fracture risk. It has been shown that tocotrienol from Bixa orellana (annatto) prevents skeletal microstructural changes in rats experiencing primary hypogonadism. However, its potential in preventing bone loss due to androgen deprivation therapy has not been tested. This study aimed to evaluate the skeletal protective effects of annatto tocotrienol using a buserelin-induced osteoporotic rat model...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29578620/ionization-of-tocopherols-and-tocotrienols-in-apci
#18
E Bartosińska, A Borsuk-De Moor, D Siluk, M J Markuszewski, P Wiczling
RATIONALE: Tocopherols and tocotrienols are chemical compounds insusceptible to the ionization process under atmospheric pressure conditions. Therefore, the selection of the optimal ion source settings for their quantification requires special attention. The aim of this study was to analyse the influence of the APCI source parameters on the response of tocochromanols and two related compounds. METHODS: Standard solutions of target compounds were injected on the HPLC-APCI-MS/MS system separately and analysed in 30 randomly selected ion source settings...
March 26, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29496592/tocotrienols-the-promising-analogues-of-vitamin-e-for-cancer-therapeutics
#19
REVIEW
Bethsebie Lalduhsaki Sailo, Kishore Banik, Ganesan Padmavathi, Monisha Javadi, Devivasha Bordoloi, Ajaikumar B Kunnumakkara
Despite the significant advancements in the diagnosis and treatment of cancer, it still remains one of the most fatal diseases in the world due to the lack of sensitive diagnosis methods and effective drugs. Therefore, discovering novel therapies that are safe, efficacious and affordable are required for the better management of this disease. Tocotrienols, analogues of vitamin E have gained increased attention due to their safety and efficacy. Extensive research over the past several years has strongly indicated that tocotrienols can efficiently prevent/inhibit the growth of different cancers such as cancers of blood, brain, breast, cervical, colon, liver, lung, pancreas, prostate, skin, stomach etc...
April 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29491063/suppressive-effect-of-delta-tocotrienol-on-hypoxia-adaptation-of-prostate-cancer-stem-like-cells
#20
Saki Kaneko, Chiaki Sato, Nobuya Shiozawa, Ayami Sato, Hiromi Sato, Nantiga Virgona, Tomohiro Yano
BACKGROUND/AIM: A hallmark of the progression of prostate cancer to advanced disease is the acquisition of androgen-independent growth. This malignant phenotype is characterized by resistance to conventional treatments and predisposes to formation of hypoxic regions containing stem-like cancer cells. Unfortunately, an effective therapy to target prostate cancer stem cells under hypoxia has not yet been established. In this report, we studied whether δ-tocotrienol (T3), a vitamin E family member that has exhibited the most potent anti-cancer activity, could suppress the survival of prostate cancer stem-like cells...
March 2018: Anticancer Research
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