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Dwivedi VK, Chandra M, Misra PC, Misra MK. Effect of vitamin E on platelet enzymatic anti-oxidants in the patients of myocardial infarction. Indian J Clin Biochem 2012; 20:21-5. [PMID: 23105488 DOI: 10.1007/bf02893036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Effect of administration of 600 mg. vitamin E each day, for six days, was observed on activity of some of the anti-oxidant enzymes and levels of malondialdehyde (as an index of free radical mediated damage) in the platelets of patients reperfused after myocardial infarction. It has been found that vitamin E administration significantly lowers the level of malondialdehyde in the patients. Vitamin E administration increases the activities of anti oxidant enzymes (viz. superoxide dismutase, glutathione reductase and catalase) tested both in the patients and healthy controls. Vitamin E administration causes general stimulation of anti-oxidant enzyme activities both in healthy persons and the patients, however, lowering of lipid per-oxidation upon administration of vitamin E is specific for patients. These findings exhibit beneficial role of vitamin E administration in the management of the patients reperfused after myocardial infarction.
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Affiliation(s)
- Vivek K Dwivedi
- Department of Biochemistry, University of Lucknow, 226 007 Lucknow
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Uchino Y, Uchino M, Dogru M, Fukagawa K, Tsubota K. Improvement of accommodation with anti-oxidant supplementation in visual display terminal users. J Nutr Health Aging 2012; 16:478-81. [PMID: 22555795 DOI: 10.1007/s12603-012-0059-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To determine the antioxidant supplementation effect on accommodation among VDT users. DESIGN A double blind randomized placebo controlled study. Registered under ClinicalTrials.gov Identifier No. NCT00877201. PARTICIPANTS AND CONTROLS Fourty right eyes of 40 healthy VDT users (30 females, 10 males, mean age: 43.8±2.8 years, range: 40-49 years). 20 subjects (15 females, 5 males; mean age: 44.0±2.7 years, range: 40-49 years). METHODS Subjects were required to take an antioxidant supplement, 20 age and sex matched subjects (15 females, 5 males; mean age: 43.6±3.1 years, range: 40-49 years) were required to take placebo medication for 4 weeks. RESULTS The mean of the change in accommodation power was significantly higher in the group receiving antioxidant supplements (0.20±0.50 Diopter(D)) compared to the placebo group (-0.12±0.48(D)) (p<0.05). CONCLUSIONS Antioxidant supplementation was observed to improve accommodation in Japanese Visual Display Terminal (VDT) Users.
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Affiliation(s)
- Y Uchino
- Department of Ophthalmology, Keio University school of Medicine, Tokyo, Japan.
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HENRIKSSON PETER, DICZFALUSY ULF, FREYSCHUSS ANNA. Microvascular Reactivity in Response to Smoking and Oral Antioxidants in Humans. Microcirculation 2011; 19:86-93. [DOI: 10.1111/j.1549-8719.2011.00125.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Baker AH, Sica V, Work LM, Williams-Ignarro S, de Nigris F, Lerman LO, Casamassimi A, Lanza A, Schiano C, Rienzo M, Ignarro LJ, Napoli C. Brain protection using autologous bone marrow cell, metalloproteinase inhibitors, and metabolic treatment in cerebral ischemia. Proc Natl Acad Sci U S A 2007; 104:3597-602. [PMID: 17360688 PMCID: PMC1805552 DOI: 10.1073/pnas.0611112104] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Despite advances in imaging, understanding the underlying pathways, and clinical translation of animal models of disease there remains an urgent need for therapies that reduce brain damage after stroke and promote functional recovery in patients. Blocking oxidant radicals, reducing matrix metalloproteinase-induced neuronal damage, and use of stem cell therapy have been proposed and tested individually in prior studies. Here we provide a comprehensive integrative management approach to reducing damage and promoting recovery by combining biological therapies targeting these areas. In a rat model of transient cerebral ischemia (middle cerebral artery occlusion) gene delivery vectors were used to overexpress tissue inhibitor of matrix metalloproteinase 1 and 2 (TIMP1 and TIMP2) 3 days before ischemia. After occlusion, autologous bone marrow cells alone or in combination with agents to improve NO bioavailability were administered intraarterially. When infarct size, BrdU incorporation, and motor function recovery were determined in the treatment groups the largest beneficial effect was seen in rats receiving the triple combined therapy, surpassing effects of single or double therapies. Our study highlights the utility of combined drug, gene, and cell therapy in the treatment of stroke.
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Affiliation(s)
- Andrew H. Baker
- *British Heart Foundation Glasgow Cardiovascular Research Centre, 126 University Place, Glasgow G12 8TA, United Kingdom
| | - Vincenzo Sica
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Lorraine M. Work
- *British Heart Foundation Glasgow Cardiovascular Research Centre, 126 University Place, Glasgow G12 8TA, United Kingdom
| | | | - Filomena de Nigris
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Lilach O. Lerman
- Division of Hypertension, Mayo Clinic Foundation, Rochester, MN 55095
| | - Amelia Casamassimi
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Alessandro Lanza
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Concetta Schiano
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Monica Rienzo
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
| | - Louis J. Ignarro
- Department of Molecular Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095; and
- To whom correspondence may be addressed. E-mail: or
| | - Claudio Napoli
- Department of General Pathology, Excellence Center on Cardiovascular Diseases, and Research Center on Craniofacial Malformations–MRI, First School of Medicine, Second University of Naples, Naples 80138, Italy
- To whom correspondence may be addressed. E-mail: or
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Bartels M, Biesalski HKHK, Engelhart K, Sendlhofer G, Rehak P, Nagel E. Pilot study on the effect of parenteral vitamin E on ischemia and reperfusion induced liver injury: a double blind, randomized, placebo-controlled trial. Clin Nutr 2005; 23:1360-70. [PMID: 15556258 DOI: 10.1016/j.clnu.2004.05.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2003] [Accepted: 05/13/2004] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Liver surgery usually involves ischemia and reperfusion (I/R) which results in oxidative stress and cell damage. The administration of antioxidants should diminish or prevent this damage. The purpose of this study was to investigate the effect of the antioxidant vitamin E on I/R injury. METHODS We carried out a placebo-controlled double-blind study on 68 patients undergoing elective, tumor-related, partial liver resection. 47 patients were qualified for the per protocol population based evaluation. The patients were randomly assigned to two groups. The day before surgery one group received three infusions containing vitamin E (600 IU=540 mg vitamin E emulsion). The other group received three infusions of placebo. RESULTS Length of stay in the intensive care unit (ICU) was significantly shorter in the verum group than in the placebo group (P<0.05). There were signs of improvement for AUC AST (P<0.05), ALT and GLDH in the verum group after surgery. Serum vitamin E concentration increased after administration of vitamin E infusion and declined in both treatment groups after surgery (P<0.01). In the verum group vitamin E deficiency was prevented while vitamin E concentration remained low in the placebo group (P<0.01). CONCLUSIONS The findings from this study indicate that preoperative administration of vitamin E is safe and that this treatment may have beneficial effects by reducing the impact of I/R injury in liver surgery.
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Affiliation(s)
- Michael Bartels
- Department of Visceral, Vascular, Thoracic and Transplant Surgery, University Hospital of Leipzig, Liebigstr. 20A, Leipzig 04177, Germany.
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Simon E, Gariepy J, Cogny A, Moatti N, Simon A, Paul JL. Erythrocyte, but not plasma, vitamin E concentration is associated with carotid intima-media thickening in asymptomatic men at risk for cardiovascular disease. Atherosclerosis 2001; 159:193-200. [PMID: 11689221 DOI: 10.1016/s0021-9150(01)00493-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Epidemiological data regarding the preventive role of vitamin E in the pathogenesis of atherosclerosis have yielded conflicting results, possibly because endpoints considered were clinical events but not detection of atherosclerosis per se. Otherwise, it has been suggested that the measure of the erythrocyte alpha-tocopherol level may be more suitable to assess the human tocopherol status than its plasma level. We investigated the association between early atherosclerosis in superficial arteries assessed noninvasively and the alpha-tocopherol status in 261 asymptomatic men at risk for cardiovascular disease. alpha-Tocopherol concentrations in plasma, HDL, and erythrocytes were determined using a reverse-phase HPLC method. Detection of carotid plaques and measure of carotid intima-media thickness (IMT) were performed using high-resolution B-mode ultrasonography. The main result of this study is the observation of a negative correlation (P<0.01) between carotid IMT and erythrocyte alpha-tocopherol concentration, independently of conventional cardiovascular risk factors, whereas no such association has been found with plasma (total or HDL) alpha-tocopherol concentrations. No association has been evidenced between alpha-tocopherol concentrations and carotid plaques. These results emphasize the primary protective role of vitamin E in the early phases of atherosclerosis and the significance of the erythrocyte alpha-tocopherol concentration as a marker of atherosclerosis.
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Affiliation(s)
- E Simon
- Laboratoire de Biochimie Cardio-vasculaire, Hôpital Européen Georges Pompidou, AP-HP, 20 rue Leblanc, 75908 Cedex 15, Paris, France
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Simon E, Paul JL, Atger V, Simon A, Moatti N. Study of vitamin E net mass transfer between alpha-tocopherol-enriched HDL and erythrocytes: application to asymptomatic hypercholesterolemic men. Free Radic Biol Med 2000; 28:815-23. [PMID: 10754278 DOI: 10.1016/s0891-5849(00)00166-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
We previously showed that hypercholesterolemic asymptomatic men had lower erythrocyte vitamin E content, despite normal plasma concentrations compared to normocholesterolemic men. We hypothesized that the reduced erythrocyte vitamin E concentration could be due to an impairment of transfer of vitamin E from plasma lipoproteins. We first developed a model for testing the ability of erythrocytes to accept vitamin E from high-density lipoproteins (HDL) pre-enriched in vitamin E, which allows to measure a net mass transfer of vitamin E from HDL to erythrocytes. Vitamin E-enriched HDL were obtained in controlled conditions of concentration and incubation time with a good reproducibility (CV </= 10%). The kinetic study of the net mass transfer of vitamin E to erythrocytes of healthy volunteers shows small inter- and intraindividual variations. The application of this model to erythrocytes of hyper- and normocholesterolemic men demonstrates that the reduced erythrocyte vitamin E content observed in hypercholesterolemic men was not due to a reduced ability of these cells to accept vitamin E from HDL. It might rather be due to an impairment of lipoproteins in the delivery of vitamin E to tissues, or to an oxidative stress which consumes antioxidants.
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Affiliation(s)
- E Simon
- Laboratoire de Biochimie Appliquée, Faculté des Sciences pharmaceutigques et biologiques, Châtenay-Malabry, France
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