The Nithsdale Schizophrenia Surveys. XIV: Plasma Lipid Peroxide and Serum Vitamin E Levels in Patients with and Without Tardive Dyskinesia, and in Normal Subjects

1995 ◽  
Vol 167 (5) ◽  
pp. 610-617 ◽  
Author(s):  
Robin G. McCreadie ◽  
Elizabeth MacDonald ◽  
David Wiles ◽  
Graham Campbell ◽  
John R. Paterson
Keyword(s):  
Free Radical ◽  
Vitamin E ◽  
Tardive Dyskinesia ◽  
Serum Vitamin ◽  
Plasma Lipid ◽  
Lipid Peroxide ◽  
Normal Subjects ◽  
Free Radical Damage ◽  
Plasma Lipid Peroxide ◽  
Radical Damage

BackgroundTardive dyskinesia (TD) may be mediated through free radical damage to neurons. Plasma lipid peroxide levels are a measure of radical damage to fats. Vitamin E is a free radical scavenger.MethodOne hundred and twenty-eight schizophrenic patients were examined for TD using the Abnormal Involuntary Movements Scale. Blood samples were taken to measure plasma lipid peroxide, serum vitamin E and cholesterol, and vitamin Exholesterol ratios. Twenty-four patients were also examined in October 1993, January 1994, and April 1994. Biochemical results were compared in 81 patients and 79 normal subjects.ResultsPatients with and without TD did not differ in median plasma lipid peroxide and serum vitamin E levels, or vitamin Exholesterol ratios. Correlations between seasonal change scores in TD and biochemical measurements were low. Lipid peroxide levels were higher and vitamin Exholesterol ratios lower in patients than in normal subjects. Vitamin E levels were lowest in in-patients and in those living in supported accommodation.ConclusionsThe results do not support the hypothesis that TD is mediated through free radical damage to neurons, but suggest increased free radical activity in schizophrenia.

Plasma lipid peroxide and serum vitamin E levels in subjects taking antipsychotic drugs

1996 ◽  
Vol 10 (4) ◽  
pp. 295-297
Author(s):  
R.G. McCreadie ◽  
J. Halliday ◽  
T. MacEwan ◽  
D. Hinselwood ◽  
G. Campbell ◽  
...  
Keyword(s):  
Vitamin E ◽  
Antipsychotic Drugs ◽  
Serum Vitamin ◽  
Plasma Lipid ◽  
Lipid Peroxide ◽  
Plasma Lipid Peroxide

scholarly journals Smoking habits and plasma lipid peroxide and vitamin E levels in never-treated first-episode patients with schizophrenia

2000 ◽  
Vol 176 (3) ◽  
pp. 290-293 ◽  
Keyword(s):  
Body Mass Index ◽  
Lipid Peroxidation ◽  
Vitamin E ◽  
Body Mass ◽  
Smoking Status ◽  
Serum Vitamin ◽  
Plasma Lipid ◽  
Lipid Peroxide ◽  
First Episode ◽  
Plasma Lipid Peroxide

BackgroundLipid peroxidation may be increased in schizophrenia, due to the illness, lifestyle or medication.AimsTo determine plasma lipid peroxide levels and serum vitamin E and A levels in first-episode never-treated people with schizophrenia and in controls.MethodThirty in-patients with a first episode of schizophrenia or schizophreniform psychosis were recruited, as were controls matched for gender, age, smoking and dietary status. Blood samples were taken, smoking status was recorded and body mass index measured.ResultsThere were no significant differences between patients and controls in plasma lipid peroxide levels. Seventy-three per cent of the patients smoked. Patients who smoked had a higher mean lipid peroxide level than non-smokers. Seventy-seven per cent of patients and 70% of controls had a ratio of vitamin Eto cholesterol of less than 5. Body mass index was lower in patients than in controls.ConclusionsAs a result of the high prevalence of smoking this group shows increased lipid peroxidation. Low serum ratios of vitamin Eto cholesterol in both patients and controls suggest an unsatisfactory diet.

scholarly journals Oxidative Stress and Longevity in Okinawa: An Investigation of Blood Lipid Peroxidation and Tocopherol in Okinawan Centenarians

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Makoto Suzuki ◽  
D. Craig Willcox ◽  
Matthew W. Rosenbaum ◽  
Bradley J. Willcox
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
Vitamin E ◽  
Age Groups ◽  
Plasma Lipid ◽  
Lipid Peroxide ◽  
Human Longevity ◽  
Free Radical Theory ◽  
Radical Theory ◽  
Theory Of Aging

Background. The Free Radical Theory of Aging mechanistically links oxidative stress to aging. Okinawa has among the world's longest-lived populations but oxidative stress in this population has not been well characterized.Methods. We compared plasma lipid peroxide (LPO) and vitamin E—plasma and intracellular tocopherol levels (total α, β, and γ), in centenarians with younger controls.Results. Both LPO and vitamin E tocopherols were lower in centenarians, with the exception of intracellular β-tocopherol, which was significantly higher in centenarians versus younger controls. There were no significant differences between age groups for tocopherol: cholesterol and tocopherol: LPO ratios. Correlations were found between α-Tocopherol and LPO in septuagenarians but not in centenarians.Conclusions. The low plasma level of LPO in Okinawan centenarians, compared to younger controls, argues for protection against oxidative stress in the centenarian population and is consistent with the predictions of the Free Radical Theory of Aging. However, the present work does not strongly support a role for vitamin E in this phenomenon. The role of intracellular β-tocopherol deserves additional study. More research is needed on the contribution of oxidative stress and antioxidants to human longevity.

Study of antioxidant potential in leaves, stems, nuts of Juglans regia L.

2012 ◽  
Vol 1 (10) ◽  
pp. 79 ◽  
Author(s):  
G. Raja* ◽  
Ivvala Anand Shaker ◽  
Inampudi Sailaja ◽  
R. Swaminathan ◽  
S. Saleem Basha ◽  
...  
Keyword(s):  
Free Radicals ◽  
Free Radical ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Juglans Regia ◽  
Radical Scavenging ◽  
Antioxidant Compounds ◽  
Free Radical Damage ◽  
Radical Damage

Natural antioxidants can protect the human body from free radicals and retard the progress of many chronic diseases as well as lipid oxidative rancidity in foods. The role of antioxidants has protected effect against free radical damage that may cause many diseases including cancer. Primary sources of naturally occurring antioxidants are known as whole grains, fruits, and vegetables. Several studies suggest that regular consumption of nuts, mostly walnuts, may have beneficial effects against oxidative stress mediated diseases such as cardiovascular disease and cancer. The role of antioxidants has attracted much interest with respect to their protective effect against free radical damage that may cause many diseases including cancer. Juglans regia L. (walnut) contains antioxidant compounds, which are thought to contribute to their biological properties. Polyphenols, flavonoids and flavonols concentrations and antioxidant activity of Leaves, Stems and Nuts extract of Juglans regia L. as evaluated using DPPH, ABTS, Nitric acid, hydroxyl and superoxide radical scavenging activity, lipid peroxidation and total oxidation activity were determined. The antioxidant activities of Leaves, Stems and Nuts extract of Juglans regia L. were concentration dependent in different experimental models and it was observed that free radicals were scavenged by the test compounds in all the models.

scholarly journals Lens Lipid Peroxides and Glutathione Concentrations in Diabetic Cataract

1997 ◽  
Vol 34 (2) ◽  
pp. 190-192 ◽  
Author(s):  
D Özmen ◽  
I Mutaf ◽  
B Özmen ◽  
J Mentes ◽  
O Bayindir
Keyword(s):  
G Protein ◽  
Lipid Peroxide ◽  
Lipid Peroxides ◽  
Thiobarbituric Acid ◽  
Thiobarbituric Acid Reactive Substances ◽  
Diabetic Cataract ◽  
Free Radical Damage ◽  
Significant Difference ◽  
Radical Damage

This study aims to explore the role of reactive oxygen radicals in the genesis of diabetic cataract. Lipid peroxide (LPO) concentrations in senile ( n = 30) and diabetic ( n = 14) cataractous lenses, were determined as thiobarbituric acid-reactive substances (TBARS) by a method modified from Satoh and Yagi, and reduced glutathione (GSH) concentrations were measured according to Beutler. Lens LPO levels (mean, SD; nmol TBARS/g protein) were significantly higher in diabetics (107·54, 18·12) than senile cataractous subjects (53·54, 15·48) ( P < 0·0001). Lens GSH levels (mean, SD; nmol/g protein) showed no significant difference between diabetics (4·29, 2·05) and senile cataractous subjects (4·68, 3·12). These results suggest that free radical damage is more effective in the genesis of diabetic cataract than in senile cataract.

Sign in / Sign up

Export Citation Format

Share Document