scholarly journals Age-related changes of superoxide dismutase activity in patients with schizophrenia

2017 ◽  
Vol 74 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Vladimir Djordjevic ◽  
Dusan Lazarevic ◽  
Vladan Cosic ◽  
Marinela Knezevic ◽  
Vidosava Djordjevic
Keyword(s):  
Superoxide Dismutase ◽  
Enzyme Activity ◽  
First Generation ◽  
Age Of Onset ◽  
First Episode ◽  
Psychotic Episode ◽  
Sod Activity ◽  
Age Related ◽  
Significant Difference ◽  
Schizophrenic Patients

Background/Aim: Superoxide dismutase (SOD) is the critical enzyme in the detoxification of superoxide radicals because those are the first species produced in the majority of biological free radical producing reactions. Inconsistent data are present about SOD activity in patients with schizophrenia. Numerous studies have shown that SOD has been elevated in chronic schizophrenic patients. However, decreased SOD activity was found in neuroleptic na?ve, first episode schizophrenic patients, in chronic-medicated patients and in chronic-unmedicated patients. The aim of this study was to examine which of the following factors including age, gender, the onset of the disease, the duration, the number of episodes, heredity, psychopathologic symptoms and drug treatment could affect erythrocyte SOD activity in patients with schizophrenia. Methods: This study included 68 consecutive patients with schizophrenia (29 males and 39 females) ranging in age from 18 to 61 years, divided into two age groups (<34 years and >34 years). SOD activity was measured in erythrocyte hemolyzates by Ransod commercially available test. Results: In the group of patients younger than 34 years SOD levels were significantly higher (1381?273 U/gHb, p=0.038) compared to the levels of the older group (1231?206 U/gHb). Gender and heredity did not induce any significant difference in SOD activity between younger and older subgroups. A significant difference in enzyme activity was found between the younger and older subgroups having the onset of the disease after 24 years of age (1408?217 U/gHb vs. 1252?213 U/gHb, p=0.031). The patients of the younger group who had more than one psychotic episode had significantly higher SOD activity (1492?298 U/gHb; p=0.009) than those who had only one episode (1256?177 U/gHb), as well as than the older subgroup with more than one episode (1253?231 U/gHb; p=0.014). Although the duration of the disease did not induce any significant difference in enzyme activity between younger and older subgroups, a significant negative correlation was obtained between SOD activity and the duration of the disease (r=-0.511, p<0.01). No significant differences were found in SOD activity between the subgroups with different PANSS scores. First generation antipsychotics were associated with elevated enzyme activity in both groups. Simultaneous treatment of patients with first generation antipsychotics and second generation antipsychotics induced a significant decrease in SOD activity in the younger group. Conclusion: Our results show that erythrocyte SOD activity is increased in the early phase of schizophrenia and that depends on age of onset of the disease, the number of psychotic episodes, the duration of the disease and medical treatment.

Low erythrocyte glutathione peroxidase activity in schizophrenic patients is mediated by gender, the number of episodes, disease duration and drug treatment

2016 ◽  
Vol 33 (S1) ◽  
pp. S246-S247
Author(s):  
V. Djordjevic ◽  
M. Knezevic
Keyword(s):  
Enzyme Activity ◽  
Glutathione Peroxidase ◽  
Drug Treatment ◽  
Second Generation ◽  
Disease Duration ◽  
Psychotic Episode ◽  
Second Generation Antipsychotics ◽  
Significant Difference ◽  
Schizophrenic Patients ◽  
Gpx Activity

IntroductionInconsistent data showed that erythrocyte glutathione peroxidase (GPx) activity in schizophrenics is altered.AimThe aim of this study was to evaluate whether some of the demographic, clinical and therapeutic factors had any significant impact on erythrocyte GPx activity in patients with schizophrenia.MethodsThis study included 68 schizophrenic patients and 59 healthy individuals. GPx activity was tested related to patient age, gender, heredity, the onset of the disease, the duration of the disease, the number of episodes, PANSS scores and drug treatment. GPx activity was determined in erythrocyte hemolysates by Ransel commercially available test.ResultsErythrocyte GPx activity was significantly lower in patients with schizophrenia than in controls. Male patients had significantly lower GPx activity in comparison with those in female ones. Heredity negative patients showed significantly lower enzyme activity compared to control values. Significantly lower GPx activity was obtained independently of the onset of the disease. The patient group having more than one psychotic episode also showed significantly lower GPx activity compared to the control group. The disease duration of more than 1 year caused a significant decrease in enzyme activity. There was a significant difference in GPx activity between patients with different PANSS scores. In patients treated with second generation antipsychotics and in those treated with both first and second generation antipsychotics, GPx activity was significantly lower than in controls.ConclusionThis study shows that the low erythrocyte GPx activity in schizophrenics depends on patient gender, the number of episodes, disease duration and drug treatment.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals THE CORRELATION BETWEEN FAT INTAKE AND PLASMA SUPEROXIDE DISMUTASE ACTIVITY WITH TELOMERE LENGTH OF MINANGKABAU ETHNICITY MEN, IN WEST SUMATERA, INDONESIA

2019 ◽  
pp. 305-309
Author(s):  
AFRIWARDI AFRIWARDI ◽  
DELMI SULASTRI ◽  
YUNIAR LESTARI ◽  
DESMAWATI DESMAWATI ◽  
PRIMA MINERVA
Keyword(s):  
Superoxide Dismutase ◽  
Enzyme Activity ◽  
Fatty Acid ◽  
Telomere Length ◽  
Saturated Fatty Acids ◽  
Cross Sectional Study ◽  
Fat Intake ◽  
Sod Activity ◽  
Cross Sectional ◽  
Total Fat

Objective: The purpose of this research is to investigate the correlation between fat intake and plasma superoxide dismutase (SOD) enzyme activity with telomere length of Minangkabau ethnic men in West Sumatera, Indonesia. Materials and Methods: This cross-sectional study was conducted in Padang City in 2016, using a sample of 107 Minangkabau ethnic men, aged between 40 and 50 years. The total fat, saturated fatty acids (SFA), monounsaturated fatty acid (MUFA), and polyunsaturated fatty acid (PUFA) intake were collected using a food frequency questionnaire, and blood sample analysis to measure telomere length and plasma SOD activity. Results: This research indicated that an average telomere length was 584.59±305.92 bp, fat intake consists of total fat was 27.01±6.68% calorie, SFA was 24,7510.07% calorie, MUFA was 10.24±5.41% calorie, and PUFA was 7.35±3.54% calorie. Average of plasma SOD activity was 5.85±3.41 u/mL. There were no correlations between fat intake (total fat, SFA, MUFA, and PUFA) with telomere length (p>0.05), but there was a significant positive correlation between plasma SOD enzyme activity with telomere length (r=−0.202, p=0.037). Conclusion: Fat intake within normal limits does not correlate with telomere length, and plasma SOD activity is a risk factor for telomere shortening in ethnic Minangkabau men.

scholarly journals Age and sex-related changes in superoxide dismutase activity in bovine tissues

2018 ◽  
Vol 60 (No. 8) ◽  
pp. 367-374 ◽  
Author(s):  
M. Giergiel ◽  
M. Kankofer
Keyword(s):  
Superoxide Dismutase ◽  
Metabolic Rate ◽  
Skeletal Muscles ◽  
Sod Activity ◽  
Age And Gender ◽  
Age Related ◽  
Blotting Technique ◽  
And Gender ◽  
Gender Discrepancies ◽  
Page Electrophoresis

The influence of age, gender, and type of tissue on superoxide dismutase (SOD) activity in bovine organs and tissues was investigated. The investigated material consisted of fragments of tissues and organs (liver, heart, lung, kidney, skeletal muscles, and diaphragm) from healthy cows (n = 15), bulls (n = 15), and female calves (n = 12) collected immediately after slaughter at the slaughterhouse. The total SOD activity was measured in tissue and organ homogenates by spectrophotometric method. PAGE electrophoresis and Western blotting technique with specific anti-SOD antibodies as well as zymography confirmed the presence of enzymatic protein and SOD isoenzymes in examined tissues. The study revealed significant differences in SOD activity between organs and tissues, which might be connected with different metabolic rate. Age-related changes were also observed. SOD activity was twice higher in kidneys, lungs, heart of calves compared to other groups of animals. It was also noticed that SOD activity was higher in younger animals and decreased with ageing among the group of bulls. Gender-related differences were observed in lungs and diaphragm. It was concluded that SOD activity depends on sex steroids, which is reflected in age and gender discrepancies, as well as metabolic rate of tissues.

Cannabis use and age of diagnosis of schizophrenia

2009 ◽  
Vol 24 (5) ◽  
pp. 282-286 ◽  
Author(s):  
Gisela Sugranyes ◽  
Itziar Flamarique ◽  
Eduard Parellada ◽  
Immaculada Baeza ◽  
Javier Goti ◽  
...  
Keyword(s):  
Age Of Onset ◽  
Peak Frequency ◽  
Cannabis Use ◽  
First Episode ◽  
Antipsychotic Treatment ◽  
Episode Psychosis ◽  
Schizophrenic Patients ◽  
Age Of Diagnosis ◽  
History Of ◽  
Post Hoc

AbstractBackground and objectivesObservational studies have reported earlier onset of psychosis in schizophrenic patients with a history of cannabis use. Earlier age of onset of schizophrenia has been associated with a poorer outcome. We aimed to examine whether cannabis use determined an earlier onset of schizophrenia in a sample of first episode patients, in an area with one of Europe's highest rates of cannabis use.Methods116 subjects with first episode psychosis and subsequent diagnosis of schizophrenia (after a 12-month follow-up) were included Age at first antipsychotic treatment (A1T) was used as proxy for age of psychosis onset, and acted as dependent variable for the statistical analysis. Cannabis use was evaluated retrospectively, and divided into three groups according to peak frequency (never, sporadic/frequent, daily).Results46 (39.7%) subjects had never used cannabis, 23 (19.9%) had done so sporadically/frequently, and 47 (40.5%) daily. A1T differed between the three groups (mean, in years and [SD]: 27.0 [4.94]; 25.7 [4.44] and 24.5 [4.36]; p = 0.033) and diminished as cannabis use increased (linear tendency; p = 0.009). Post-hoc analysis showed that cannabis use (irrespective of frequency) was significantly associated with decrease in A1T (p = 0.033), as shown by the first contrast [1 −1/2 −1/2]. Post-hoc contrast showed that cannabis users had a significantly lower age of onset of psychosis (mean decrease, in years: 1.93; CI (confidence interval) 95%: 0.17–3.70; p = 0.033).ConclusionsCannabis use was significantly associated with a decrease in age of onset of schizophrenia. Age of onset of the disease correlated with frequency of cannabis use.

Rehospitalization rate of first episode and chronic schizophrenia patients one year after discharge

2016 ◽  
Vol 33 (S1) ◽  
pp. S587-S587 ◽  
Author(s):  
R. Softic ◽  
E. Becirovic ◽  
M. Mirkovic Hajdukov
Keyword(s):  
Relapse Rate ◽  
First Generation ◽  
Chronic Schizophrenia ◽  
First Episode ◽  
Psychotic Episode ◽  
Rehospitalization Rate ◽  
High Relapse Rate ◽  
Frequent Use ◽  
Long Acting ◽  
Multiple Episodes

IntroductionRelapse rate among patients with schizophrenia can determinate outcome of illness. Up to 40% of patients with first psychosis responds well to treatment. Despite this fact relapse rate is still high, in particular if treatment is discontinuated. Frequent use of first generation antipsychotics (FGA) in underdeveloped countries can be one of possible reasons for treatment discontinuation and consequent relapse.AimsTo analyse rehospitalisation rate in patients with first and multiple episodes of schizophrenia, and compare it with medication choice.MethodsRetrospective analysis of medical records of patients with schizophrenia hospitalised in Psychiatry Clinic of University Clinical Center Tuzla in period from year 2011 to 2013.ResultsDuring the two-year period, 37 patients with first episode of schizophrenia were hospitalised. Second generation antipsychotics (SGA) were used in 40.5%, and first generation in 13.5%, long acting injectibles - first generation (LAI) were used in 8.1%, and combination of FGA's and SGA's in 5.4% of cases. In the same period, 121 patients with multiple episodes of schizophrenia were hospitalised. SGA were used in 21.4%, FGA in 33%, LAI's in 47.1%, and combination FGA's and SGA's in 35.5% of cases. Relapse rate in the first year after discharge was 16.2% in group with first psychotic episode, and 33% in the group with multiple episodes of schizophrenia.ConclusionHigh relapse rate in group with multiple episodes can be explained with nonadherence regarding the side effects of too frequent use of FGA's.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals Effect of Nandrolone Treatment with And Without Resistance Training on Superoxide Dismutase Concentration and Pathology of Kidney Tissue in Rats

2020 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Esfandiyar Heidari ◽  
Seyed Ali Hosseini ◽  
Mohammad Ali Azarbayjani
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Resistance Training ◽  
Anabolic Steroids ◽  
Kidney Tissue ◽  
Sod Activity ◽  
Significant Difference ◽  
Stress Levels ◽  
Sh Group ◽  
Male Wistar Rats

Background: The prevalence of anabolic steroids abuse in athletes and non-athletes is associated with the risk of injury to various organs, but there are limited studies of oxidative changes in kidney tissue following nandrolone (N) administration. Objectives: the aim of this study was to investigate the effect of N treatment with and without resistance training (RT) on superoxide dismutase (SOD) concentration and tissue pathology of kidney tissue in rats. Methods: In this experimental study, 20 male Wistar rats were randomly divided into four groups of five rats including 1) control (C), 2) sham (normal saline) (Sh), 3) N, and 4) N + RT. Groups 3 and 4 received 10 mg/kg N peritoneally, and the N + RT group performed 1 m ladder climbing for eight weeks and three sessions per week. SOD levels of kidney tissue were measured by ELISA and radioimmunoassay. Hematoxylin-eosin (H&E) staining was used to evaluate oxidative stress levels in kidney tissue. One-way ANOVA with Bonferroni’s post- hoc tests were used for analysis of research findings in SPSS version 22 (P ≤ 0.05). Results: SOD levels in the C group were higher than the Sh (P = 0.001), N (P = 0.001), and N + RT (P = 0.001) groups. SOD levels were lower in the Sh group than in the N (P = 0.049) and N + RT (P = 0.001) groups. However, there was no significant difference in SOD levels in the N + RT group and N group (P = 0.28). Also, oxidative stress levels were normal in tissue studies in all groups. Conclusions: It seems that Ntreatment with and without RT reduces SOD activity in kidney tissue, but more studies are needed in this regard given the normality of tissue oxidative stress results.

scholarly journals Influence of titanium and bio-fertilizers on some agronomic and physiological attributes of triticale exposed to cadmium stress

2017 ◽  
Vol 19 (3) ◽  
pp. 458-463 ◽  
Keyword(s):  
Superoxide Dismutase ◽  
Grain Yield ◽  
Cadmium Stress ◽  
Grain Weight ◽  
Nano Particles ◽  
Nano Particle ◽  
Sod Activity ◽  
Significant Difference ◽  
Four Levels ◽  
1000 Grain Weight

To evaluate the effects of titanium and bio-fertilizers on some agronomic and physiological properties of triticale grown in cadmium (Cd) contaminated soil, a glasshouse experiment was conducted based on a completely randomized design with three replications. The treatments were arranged in a 4×4 factorial experiment with four levels of titanium (control, bulk titanium, 0.01%, and 0.02% titanium nano-particles) and four levels of bio-fertilizers (no bio-fertilizer, Azotobacter chroococcum, Azospirillum brasilense and Azorhizobium caulinodans). The Cd contamination increased Cd accumulation in the leaves and seeds and also enhanced antioxidant enzymes activity. Cadmium stress decreased grain yield, 1000-grain weight and chlorophyll. Titanium nano-particle (0.02%) caused the maximum increase in grain yield, 1000-grain weight, leaf Cd, seed Cd, chlorophyll content. Superoxide dismutase (SOD) and catalase (CAT) activity increased due to titanium application but malondialdehyde (MDA) contented decreased. Although, there was no significant difference between control and bulk titanium treatments in terms of SOD activity. The effect of 0.02% nano-particle in increasing SOD activity was more pronounced than 0.01% treatment. In addition, CAT activity was more affected by titanium nano-particles than bulk titanium. Furthermore, Azorhizobium increased grain yield, 1000-grain weight, leaf Cd, seed Cd and chlorophyll while decreased superoxide dismutase and catalase enzyme activity.

scholarly journals Interrelationships Between BDNF, Superoxide Dismutase, and Cognitive Impairment in Drug-Naive First-Episode Patients With Schizophrenia

2020 ◽  
Vol 46 (6) ◽  
pp. 1498-1510 ◽  
Author(s):  
Mei Hong Xiu ◽  
Zezhi Li ◽  
Da Chun Chen ◽  
Song Chen ◽  
Maile E Curbo ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Cognitive Impairment ◽  
Clinical Symptoms ◽  
Interactive Effect ◽  
Redox System ◽  
First Episode ◽  
Sod Activity ◽  
Neuropsychological Status ◽  
Syndrome Scale ◽  
Drug Naïve

Abstract The pathogenesis and etiology of schizophrenia (SCZ) remains unclear. Accumulating studies showed that complex interrelationships between brain-derived neurotrophic factor (BDNF) and an imbalanced redox system has a crucial role in the psychopathology of SCZ. However, the influence of the interrelationships of BDNF and superoxide dismutase (SOD) on cognitive impairment and clinical symptomatology in drug-naive first-episode (DNFE) SCZ patients has not been studied thoroughly. Serum BDNF levels, plasma total SOD, manganese-SOD (Mn-SOD), copper/zinc-containing SOD (CuZn-SOD) activities, and malondialdehyde (MDA) levels were measured in 327 DNFE patients with SCZ and 391 healthy controls. Cognitive functions were measured using the Repeatable Battery for the Assessment of Neuropsychological status (RBANS) and clinical symptoms were evaluated by the Positive and Negative Syndrome Scale (PANSS). Compared with the controls, the DNFE patients had increased activities of total SOD and CuZn-SOD, and reduced levels of BDNF and MDA. BDNF levels were positively correlated with CuZn-SOD activity in patients. In addition, we found that elevated Mn-SOD and CuZn-SOD activities were related to PANSS depression factor. Moreover, an interactive effect of BDNF levels and Mn-SOD activity was associated with attentional index score in the patients. Therefore, our findings suggested that interrelationships between BDNF and antioxidant mechanisms might underlie the pathological mechanisms of cognitive impairments and symptomatology in the DNFE patients with SCZ.

Effects of Nonylphenol on the Enzyme Activity of SOD in Shrimp (Neocaridina heteropoda)

2014 ◽  
Vol 1073-1076 ◽  
pp. 256-258
Author(s):  
Hong Wei Wang ◽  
Qing Chao Xing ◽  
Jie Zhang ◽  
Rui Yin ◽  
Duan Bo Cai ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Enzyme Activity ◽  
Sod Activity ◽  
Physiological Indicators ◽  
Relationship Of ◽  
The Relationship

The effects of different concentrations of nonylphenol on Neocaridina heteropoda were studied through testing the Superoxide Dismutase (SOD) activity in the muscle of N. heteropoda under the nonylphenol stress, then explored the relationship of the time that was N. heteropoda exposed nonylphenol and the in vivo physiological indicators. Results showed the following conclusion: in a certain range, higher concentrations of nonylphenol had heavier influence on SOD activity of shrimps; shrimps were infected significantly when they were exposed to the same concentration of nonylphenol in 2 days; the influence was reduced to the shrimp with the prolonging of time.

scholarly journals   Antioxidative mechanisms on selenium accumulation in Pteris vittata L., a potential selenium phytoremediation plant

2012 ◽  
Vol 58 (No. 3) ◽  
pp. 105-110 ◽  
Author(s):  
R.W. Feng ◽  
C.Y. Wei
Keyword(s):  
Superoxide Dismutase ◽  
Enzyme Activity ◽  
Pteris Vittata ◽  
Sod Activity ◽  
Antioxidant Responses ◽  
Industrial Activities ◽  
Chinese Brake Fern ◽  
Selenium Accumulation ◽  
Pteris Vittata L

Selenium (Se) contamination due to industrial activities has received increasing concerns. Phytoremediation has been suggested to be an efficient and feasible way to remove Se from Se-contaminated environment. Recently, an arsenic (As) hyperaccumulator Pteris vittata L. (Chinese Brake fern) was found to be a Se accumulator. This study was carried out to investigate Se accumulation mechanisms concentrating on antioxidant responses of this plant to six levels of selenite (0, 1, 2, 5, 10, and 20 mg/L). The results showed that Chinese Brake fern can accumulate a large amount of Se without any visible toxic symptoms and significant decreases in its biomass. However, the root took up more Se than the fronds. The highest concentration of Se in the roots and fronds was 1.536 mg/kg and 242 mg/kg, respectively, demonstrating a typical accumulation character to Se. Addition of 2 mg/L Se decreased, but &ge; 5&nbsp;mg/L Se enhanced the production of malondialdehyde (MDA), suggesting an antioxidant role of low dosages of Se. The enzymes of catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD) contributed their anti-oxidative functions only under low dosages of Se, as shown by their increased activities at Se levels &le; 5 mg/L and lowered activities at Se levels &gt; 5 mg/L. The concentration of glutathione (GSH) and enzyme activity of glutathione reductase (GR) were stimulated by &ge; 5 mg/L Se. Superoxide dismutase (SOD) activity was also enhanced by 20 mg/L Se. Our results suggest that SOD, GSH and GR were likely responsible for, but enzymes of POD, APX, and CAT have limited roles in Se accumulation in Chinese Brake fern. &nbsp;

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