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Vitamin A toxic

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https://www.readbyqxmd.com/read/28524107/inorganic-macro-and-micronutrients-in-superberries-black-chokeberries-aronia-melanocarpa-and-related-teas
#1
Iva Juranović Cindrić, Michaela Zeiner, Darija Mihajlov-Konanov, Gerhard Stingeder
Black chokeberries (Aronia melanocarpa) are considered to be functional food containing high amounts of anthocyanins, phenols, antioxidants, vitamins and minerals. Whereas organic compounds are well studied, there is little research on the mineral composition of the chokeberries. Thus, the presented study is focused on the determination of Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Se, Sr and Zn in black chokeberry fruits and infusions to study the metals' extractability. The nutrients Ca, K and Mg are present in the fruits (dried matter) at g/kg level, whereas the other elements are present from µg/kg up to mg/kg level...
May 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28509131/growth-hormone-therapy-for-a-patient-with-idiopathic-fanconi-syndrome-and-growth-hormone-deficiency
#2
Takayuki Okamoto, Yasuyuki Sato, Takeshi Yamazaki, Asako Hayashi, Toshiyuki Takahashi
Idiopathic Fanconi syndrome (FS) is characterized by a generalized dysfunction of the renal proximal tubules. Patients with FS often exhibit growth retardation due to complex factors, such as hypophosphatemia, metabolic acidosis, disturbed vitamin D metabolism and hypokalemia. To date, one FS patient has been reported to exhibit growth failure due to growth hormone deficiency (GHD), but the long-term clinical course of recombinant human GH (rhGH) therapy has not been reported. At 10 months of age, the patient was admitted to our hospital due to growth failure...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28499202/novel-dual-ves-phospholipid-self-assembled-liposomes-with-an-extremely-high-drug-loading-efficiency
#3
Yongpeng Hou, Chen Yao, Longbing Ling, Yawei Du, Ruiyu He, Muhammad Ismail, Ying Zhang, Zhenglin Fu, Xinsong Li
Vitamin E succinate (VES), a unique selective anti-cancer drug, has attracted much attention for its ability to induce apoptosis in various cancer cells. Importantly, it has been reported that VES is largely non-toxic to normal cells. However, poor aqueous solubility and bioavailability extensively restricted its clinical utility. In this report, dual VES phospholipid conjugate (di-VES-GPC) prodrug based liposomes were prepared in order to develop an efficient delivery system for VES. Di-VES-GPC was first synthesized by conjugating VES with l-α-glycerophosphorylcholine (GPC) using N,N'-dicyclohexylcarbodiimide (DCC) as a coupling agent...
May 2, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28498446/synergistic-protective-effect-of-fty720-and-vitamin-e-against-simulated-cerebral-ischemia-in-vitro
#4
Xin Pang, Xuening Hou
The purpose of the present study was to explore the combination effect of FTY720 and vitamin E on cerebral ischemia. Astrocytes were isolated from newborn Sprague‑Dawley rats and were subjected to FTY720, vitamin E, or combination of the two. The astrocyte cultures were then exposed to oxygen‑glucose deprivation (OGD) to simulate an ischemic model in vitro. Cell viability, lactate dehydrogenase (LDH) leakage and cell apoptosis were detected following 12 h of exposure to OGD. In addition, the levels of tumor necrosis factor (TNF)‑α, interleukin (IL)‑6, IL‑1β, total antioxidant capacity, intercellular adhesion molecule (ICAM)‑1, vascular cell adhesion molecule (VCAM)‑1, chemokine (C‑X‑C motif) ligand (CXCL)‑10, heme oxygenase (HO)‑1 and superoxide dismutase (SOD)‑1 were measured...
May 11, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28494372/separation-and-preconcentration-of-riboflavin-from-human-plasma-using-polythionine-coated-magnetite-hydroxyapatite-nanocomposite-prior-to-analysis-by-surfactant-enhanced-fluorimetry
#5
Leila Farzin, Mojtaba Shamsipur
The exploration of novel adsorption properties of conductive polymers based on hybridization with biocompatible nanomaterials receives an increasing interest. In this regard, hydroxyapatite (HA) bioceramic is of critical importance mainly owing to its facile synthesis, high surface area, economic and low toxicity in biological environments. In this work, we first prepared and characterized a magnetite/hydroxyapatite (Fe3O4/HA) nanocomposite using the bio-waste chicken eggshell via an attractive green way that involved low cost and irrespective of toxicity...
May 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28491864/can-getting-enough-vitamin-d-during-pregnancy-reduce-the-risk-of-getting-asthma-in-childhood
#6
REVIEW
Evangelia Bountouvi, Konstantinos Douros, Anna Papadopoulou
The worldwide increase in asthma prevalence during the last decades and the re-emergence of vitamin D deficiency in many populations hinted toward an underlying association between these two conditions. Since asthma is presented with high incidence in childhood and neonatal vitamin D stores depend on maternal vitamin levels, a possible programming effect of maternal vitamin D status during gestation was suggested. Observational and longitudinal studies on this subject led to inconclusive results with glimmer of positivity...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28491851/pemetrexed-induced-acute-kidney-failure-following-irreversible-renal-damage-two-case-reports-and-literature-review
#7
Tito Zattera, Francesco Londrino, Matteo Trezzi, Roberto Palumbo, Antonio Granata, Paola Tatangelo, Valentina Corbani, Valeria Falqui, Nadia Chiappini, Lisa Mathiasen, Marco Cavallini, Davide Rolla
BACKGROUND: Pemetrexed (PEM) is a new-generation multitargeted antifolate agent with a demonstrated broad-spectrum activity in several types of human cancers, including non-small cell lung cancer (NSCLC) and mesothelioma. Major side effects include dose-limiting hematologic toxicities. PEM nephrotoxicity is well known; however, its frequency is considered to be low. CASE PRESENTATION: Here we report two cases of acute kidney injury (AKI) related to PEM administration (500 mg/m2) in patients with NSCLC...
March 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28490367/vitamin-d-deficiency-among-smear-positive-pulmonary-tuberculosis-patients-and-their-tuberculosis-negative-household-contacts-in-northwest-ethiopia-a-case-control-study
#8
Belay Tessema, Feleke Moges, Dereje Habte, Nebiyu Hiruy, Shewaye Yismaw, Kassahun Melkieneh, Yewulsew Kassie, Belaineh Girma, Muluken Melese, Pedro G Suarez
BACKGROUND: Vitamin D is a fat-soluble vitamin that increases the immunity against tuberculosis (TB), decreases the re-activation of latent TB and reduces the severity of active TB disease. Epidemiological studies on the prevalence of vitamin D deficiency, and its association with TB showed inconsistent results in different countries. This study was aimed to determine the prevalence of vitamin D deficiency and its association with TB in Northwest Ethiopia. METHODS: A case-control study was conducted among smear positive pulmonary tuberculosis patients and their household contacts without symptoms suggestive of TB...
May 11, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28490135/polyunsaturated-lipids-and-vitamin-a-oxidation-during-cod-liver-oil-in-vitro-gastrointestinal-digestion-antioxidant-effect-of-added-bht
#9
Bárbara Nieva-Echevarría, Encarnación Goicoechea, María D Guillén
The extent of cod liver oil hydrolysis and oxidation during in vitro gastrointestinal digestion was investigated by Proton Nuclear Magnetic Resonance ((1)H NMR) and Solid Phase Microextraction-Gas Chromatography/Mass Spectrometry (SPME-GC/MS). These techniques evidenced the degradation of polyunsaturated ω-3 and ω-6 lipids and, for the first time, that of vitamin A, naturally present in cod liver oil. Cis,trans-conjugated dienes associated with hydroperoxides, as well as monoepoxides, cis,trans-2,4-alkadienals, 4-hydroperoxy- and 4-hydroxy-2-alkenals, and several vitamin A derived metabolites were generated...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28475169/alterations-in-serum-levels-of-selected-markers-of-oxidative-imbalance-in-adult-celiac-patients-with-extraintestinal-manifestations-pilot-study
#10
Agnieszka Piątek-Guziewicz, Paweł Zagrodzki, Paweł Paśko, Mirosław Krośniak, Agata Ptak-Belowska, Magdalena Przybylska-Feluś, Tomasz Mach, Małgorzata Zwolińska-Wcisło
INTRODUCTION    Oxidative stress is considered as one of the mechanisms responsible for gluten toxicity, but its role in celiac disease (CD) remains unclear.  OBJECTIVES    To evaluate oxidative imbalance in the pathomechanism of CD by determining the concentrations of nitric oxide (NO) and selected antioxidant parameters.  PATIENTS AND METHODS    The study involved 197 adult patients: 53 patients with untreated active CD, 92 celiac patients on gluten-free diet (GFD), and 52 controls. Serum concentrations of antioxidants (uric acid, bilirubin, ferritin, albumin) and serum levels of celiac antibodies, NO, glutathione peroxidase (GPx3) and vitamin E were measured...
May 5, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28466891/analogues-of-desferrioxamine-b-designed-to-attenuate-iron-mediated-neurodegeneration-synthesis-characterisation-and-activity-in-the-mptp-mouse-model-of-parkinson-s-disease
#11
Michael P Gotsbacher, Thomas J Telfer, Paul K Witting, Kay L Double, David I Finkelstein, Rachel Codd
Parkinson's disease (PD) is a neurodegenerative disorder characterised by the death of dopaminergic neurons in the substantia nigra pars compacta (SNpc) region of the brain and formation of α-synuclein-containing intracellular inclusions. Excess intraneuronal iron in the SNpc increases reactive oxygen species (ROS), which identifies removing iron as a possible therapeutic strategy. Desferrioxamine B (DFOB, 1) is an iron chelator produced by bacteria. Its high Fe(iii) affinity, water solubility and low chronic toxicity is useful in removing iron accumulated in plasma from patients with transfusion-dependent blood disorders...
May 3, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28465627/nutritional-control-of-antibiotic-production-by-streptomyces-platensis-ma7327-importance-of-l-aspartic-acid
#12
Maria Falzone, Emmanuel Crespo, Klarissa Jones, Gulaba Khan, Victoria L Korn, Amreen Patel, Mira Patel, Krishnaben Patel, Carrie Perkins, Sana Siddiqui, Drew Stenger, Eileen Yu, Michael Gelber, Robert Scheffler, Vasyl Nayda, Ariela Ravin, Ronica Komal, Jeffrey D Rudolf, Ben Shen, Vincent Gullo, Arnold L Demain
Streptomyces platensis MA7327 is a bacterium producing interesting antibiotics, which act by the novel mechanism of inhibiting fatty acid biosynthesis. The antibiotics produced by this actinomycete are platensimycin and platencin plus some minor related antibiotics. Platensimycin and platencin have activity against antibiotic-resistant bacteria such as methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus; they also lack toxicity in animal models. Platensimycin also has activity against diabetes in a mouse model...
May 3, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28463476/p-gp-inhibition-and-mitochondrial-impairment-by-dual-functional-nanostructure-based-on-vitamin-e-derivatives-to-overcome-multidrug-resistance
#13
Ruslan G Tuguntaev, Shizhu Chen, Ahmed Shaker Eltahan, Anbu Mozhi, Shubin Jin, Jinchao Zhang, Chan Li, Paul C Wang, Xing-Jie Liang
Vitamin E derivatives possess many essential features for drug-delivery applications, such as biocompatibility, stability, improvement of water solubility of hydrophobic compounds, anticancer activity, and the ability to overcome multidrug resistance (MDR). Herein, vitamin E derivatives are used to overcome MDR through a combined P-glycoprotein (P-gp) inhibition and mitochondrial impairment strategy. A novel nanomicellar drug-delivery system as a carrier for doxorubicin (DOX) was developed, in which d-α-tocopheryl polyethylene glycol 1000 succinate was used as a P-gp inhibitor, α-tocopheryl succinate was introduced as a mitochondrial disrupting agent, and d-α-tocopheryl polyethylene glycol 2000 succinate was used as the main building block of micelles...
May 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28462439/ameliorative-effect-of-ve-igf-i-and-hcg-on-the-fluoride-induced-testosterone-release-suppression-in-mice-leydig-cells
#14
Yuxiang Yu, Yongli Han, Ruiyan Niu, Jundong Wang, Ram Kumar Manthari, Mohammad Mehdi Ommati, Zilong Sun
Excessive consumption of fluoride (F) through drinking, eating, and/or environmental contaminants induces chronic toxicity known as fluorosis. Our previous research has shown that fluorosis was associated with male reproductive disorders. The current study is designed to explain the protective effect of vitamin E (VE), insulin-like growth factor-I (IGF-I), and human chorionic gonadotropin (hCG) against natrium fluoride (NaF)-induced alterations in isolated Leydig cells (LCs). These NaF-induced alterations include decreased cell proliferation, steroidogenesis, and relative gene expression...
May 1, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28458767/evaluation-of-vitamin-d3-intakes-up-to-15-000-international-units-day-and-serum-25-hydroxyvitamin-d-concentrations-up-to-300-nmol-l-on-calcium-metabolism-in-a-community-setting
#15
S M Kimball, N Mirhosseini, M F Holick
Supplementation by the general public with vitamin D at doses above the Tolerable Upper Level of Intake (UL) is becoming quite common. The objective of the current analysis was to characterize the effect of vitamin D supplementation at doses up to 15,000 IU/d in a community-based program on vitamin D status, calcium homeostasis as well as on kidney, liver and immune function. We evaluated data collected for 3,882 participants in a community program for whom there were blood measurements at program entry and at follow-up within 6-18 months between 2013 and 2015...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/28448868/protective-effects-of-teucrium-polium-aqueous-extract-and-ascorbic-acid-on-hematological-and-some-biochemical-parameters-against-carbon-tetrachloride-ccl4-induced-toxicity-in-rats
#16
Fatma Rahmouni, Latifa Hamdaoui, Riadh Badraoui, Tarek Rebai
Herbal drugs play a crucial function to protect organisms from the toxic effect of some compounds. The present study was designed to evaluate the protective effects of Teucrium Polium (TP) aqueous extract and vitamin C (Vit C) against carbon tetrachloride (CCl4) which induced toxicity in rats. Male albino Wistar rats were divided into six groups: group I was used as controls, group II received CCl4 in olive oil (0.5ml/kg) by gavage, and group III received CCl4 in olive oil (0.5ml/kg) by gavage after three days of receiving TP (5g/l), orally, for seven days; Group IV received TP (5g/l) alone, orally, for seven days, Group V received CCl4 in olive oil (0...
April 24, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28448545/vitamin-d3-induced-hypercalcemia-increases-carbon-tetrachloride-induced-hepatotoxicity-through-elevated-oxidative-stress-in-mice
#17
Hiroki Yoshioka, Haruki Usuda, Nobuhiko Miura, Nobuyuki Fukuishi, Tsunemasa Nonogaki, Satomi Onosaka
The aim of this study was to determine whether calcium potentiates acute carbon tetrachloride (CCl4) -induced toxicity. Elevated calcium levels were induced in mice by pre-treatment with cholecalciferol (vitamin D3; V.D3), a compound that has previously been shown to induce hypercalcemia in human and animal models. As seen previously, mice injected with CCl4 exhibited increased plasma levels of alanine aminotransferase, aspartate aminotransferase, and creatinine; transient body weight loss; and increased lipid peroxidation along with decreased total antioxidant power, glutathione, ATP, and NADPH...
2017: PloS One
https://www.readbyqxmd.com/read/28445006/equine-atypical-myopathy-in-the-uk-epidemiological-characteristics-of-cases-reported-from-2011-to-2015-and-factors-associated-with-survival
#18
S González-Medina, J L Ireland, R J Piercy, J R Newton, D M Votion
BACKGROUND: Equine atypical myopathy (AM) is a toxic rhabdomyolysis associated with ingestion of hypoglycin A, derived typically in Europe, from Acer pseudoplatanus tree. Despite the wide distribution of this tree species in the UK, the number of cases reported annually varies, and there has been an apparent increase in prevalence in recent years. Although AM was first recognised in the UK, epidemiological studies have never been conducted focused solely on this country. OBJECTIVES: To describe the spatiotemporal distribution, presentation, treatment and outcome of AM cases reported in the UK...
April 26, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28430846/a-case-of-bariatric-surgery-related-wernicke-korsakoff-syndrome-with-persisting-anterograde-amnesia
#19
Philip Gerard Gasquoine
Objective: To describe the theoretical and clinical implications of the neuropsychological evaluation of a case of bariatric surgery-related Wernicke-Korsakoff syndrome. Method: The patient was a 37-year old, female, bilingual, bachelor's degree educated, Mexican American public relations consultant without preexisting psychiatric, neurological, or substance abuse history. Recovery from laparoscopic sleeve gastrectomy surgery for morbid obesity was complicated by intraabdominal abscess, multibacterial infection, and prolonged nausea and vomiting...
April 20, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28429905/maintenance-vitamin-d3-dosage-requirements-in-chinese-women-with-post-menopausal-osteoporosis-living-in-the-tropics
#20
Yogeswari Venugopal, Sharifah F Wan Muhamad Hatta, Nurbazlin Musa, Siti Abdul Rahman, Jeyakantha Ratnasingam, Sharmila Sunita Paramasivam, Lee Ling Lim, Luqman Ibrahim, Karen Choong, Alexander Tb Tan, Karuthan Chinna, Siew Pheng Chan, Shireene R Vethakkan
BACKGROUND AND OBJECTIVES: Vitamin D3 (cholecalciferol) dose required to maintain sufficiency in non- Caucasian women with postmenopausal osteoporosis (PMO) inthe tropics has not been well studied. Some guidelines mandate 800-1000 IU vitamin D/day but the Endocrine Society (US) advocates 1500-2000 IU/day to maintain 25-hydroxyvitamin-D (25(OH)D) concentration at >75 nmol/L. We aimed to establish oral cholecalciferol dose required to maintain 25(OH)D concentration at >75 nmol/L in PMO Chinese Malaysian women, postulating lower dose requirements amongst light-skinned subjects in the tropics...
May 2017: Asia Pacific Journal of Clinical Nutrition
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