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Showing 44 results for Ida
Ghodrat Akhavan Akbary , Abdolrasool Heidari , Shokouh Sadr Azodi ,
Volume 4, Issue 3 (9-2004)
Abstract
Background & Objectives : Laryngoscopy and tracheal intubation may lead to tachycardia, hypertension and dysrhythmia or myocardial ischemia. In this double blind study, the effects of midazolam and lidocaine on hemodynamic response to endotracheal intubation have been examined. Methods : 52 ASA class one patients, aged 20-50, who were candidate for elective inguinal hernia surgery with general anesthesia, were randomly assigned to two groups. All patients received normal saline or Ringer's lactate solution (5ml/kg) about 5-10 minutes before induction of anesthesia and were preoxygenated for 3 minutes. Group 1 received midazolam (0.05 mg/kg) and group 2 received lidocaine (1.5 mg/kg) during 3 minutes prior to intubation. Anesthesia was induced with fentanyl (100 µ g) and thiopental (5 mg/kg) and trachea was intubated by the aid of succinyl choline (1.5 mg/kg). Anesthesia was maintained with halothane (0.5-0.75%) and equal proportions of nitrous oxide and oxygen. Systolic and diastolic blood pressure, mean arterial pressure (MAP) and heart rate were recorded before premedication and intubation, as well as immediately two and five minutes after intubation. The data were analyzed by SPSS software using paired t-test. Results : After intubationSystolic and diastolic blood pressure, MAP and heart rate increased in both groups compared to the baseline values. The difference in increasing diastolic blood pressure and MAP between the two groups was significant (p<0.05), but the difference in increasing systolic blood pressure and heart rate between two groups was not statistically significant. The increase in diastolic blood pressure and MAP in group 1 was significantly more than group 2 (p<0.05). Conclusion : Clinically, midazolam was as much effective as lidocaine in controlling response to intubations. Consequently it can be used as an alternative lidocaine in intubations. It has also other priorities such as amnesia, anti-anxiety and anti-agitation.
Mohammad Hosein Dehghan, Ali Majidpour,
Volume 5, Issue 3 (9-2005)
Abstract
Background & Objectives: Regarding the high prevalence of hyperlipidemia in the world especially in Iran, finding suitable and effective treatment seems justified. Metronidazole is the only drug that is used as an antiparasital and antiprotozoal agent. Researchers have found that oral dose of 750 mg/day has a suitable absorption, is widely distributed in the tissues and reaches to a blood level of 4-6 mg/ml. Despite its suitable efficiency, a few clinical trial have been conducted in this regard. This study was designed as such to examine the effect of metronidazole on lowering blood lipids. Methods: The present research was performed as a clinical trial without control, on 50 patients. All the patients filled out a special form (to show their satisfaction) as well as a questionnaire. Metronidazole was given with a daily dose of 750 mg for a week. 20 patients with no complaint continued their drug consumption for another seven days. Lipid parameters such as plasma total lipid, total cholesterol, and triglyceride were measured in both groups. The data were collected and analyzed with SPSS software using t-test. Results: Measuring the serum level of lipids indicated that the mean total plasma lipid and total cholesterol decreased significantly compared to their level before taking the drug (p<0.01). The findings also showed a similar decrease in plasma TG level (p<0.001). In the patients who continued the drug consumption in the second week, the serum level of lipids under study showed more decrease compared to their levels in the first week which was statistically significant (p<0.01). Liver tests indicated that the functioning of liver has not changed during drug consumption. Conclusion: Using 750 mg of metronidazole per day exerts a significant decrease in lipids fractions in a short time. Most cases of hyperlipidemia require a long-term treatment, hence metronidazole can be effectively used in the treatment of short-term hyperlipidemia.
,
Volume 6, Issue 2 (6-2006)
Abstract
Background & Objectives: Diabetes mellitus may be associated with the imbalance between protective effect of antioxidants and increased free radical production with regard to discrepancies of the findings in previous researches the present study set out to determine the changes of plasma malondialdehyde and erythrocyte antioxidant superoxide dismutase activity in patients with type II diabetes mellitus. Methods: This case-control study was conducted in 2005 using random sampling. 38 patients with type II diabetes mellitus who referred to 5th Azar diabetes center and 19 age and sex matched healthy controls were selected for this study. Heparinated blood samples were taken from the cases. The separated plasma was tested for blood sugar, lipid peroxidation and blood cells (for glycolisated Hb and superoxide dismutase enzyme activity). The collected data were analyzed by SPSS (ver. 10) using t-test. Results: The level of plasma malondialdehyde from type II diabetes mellitus patients (6.27±0.80 nmol/ml) was significantly different from that in control group (3.56±0.98 nmol/ml)(p<0.05). Erythrocyte superoxide dismutase activity from type II diabetes mellitus patients (678.78±59.36 U/gr Hb) was significantly lower than control group (1056.47±52.98 U/gr Hb) (p<0.05). Conclusion: The significant difference between the increase in malondialdehyde and decrease in the activity of antioxidant enzymes in patients with type II diabetes mellitus may predispose to the development of serious complications leading to cellular damage. This suggest that diabetic patients may need more antioxidants than normal. Supplementation with medical or non-medical free radical scavengers such as vitamins E and C or foods untaining vitamin C (sitrus fruits) have a potential role in reinforcing antioxidant defence and can be important in diabetic patients.
Mohammad Mazani , Hasan Argani , Nadereh Rashtchizadeh , Mohammad Rohbaninoubar , Amir Ghorbanihagjo , Reza Mahdavi , Reza Razzaghi , Babak Rahimi Ardabily , Seyedjamal Ghaemmaghami ,
Volume 6, Issue 3 (9-2006)
Abstract
Background and Objectives: A great amount of evidence shows that Oxidative stress is high among hemodialysis patients. The purpose of present investigation is examination of the effect of zinc supplementation on improvement of oxidative stress in chronic hemodialysis patients. Methods: In this double blind clinical trial 65 chronic hemodialysis patients were studied in two groups Group one (35 patients) received placebo and group two (30 patients) received 100 mg elemental zinc (as zinc sulfate) daily for 2 months. The placebo and supplement discontinued in next 2 months. Then, the study continued for two other months in the cross-over from. The levels of serum zinc, total glutathione, malondialdehyde (MDA), total serum antioxidant capacity and the activity of whole blood superoxide dismutase (SOD) were determined on 0th, 60th,120th,180th days, in fasting, predialysis samples. Food record was recorded for one day prior to dialysis in above-mentioned days and their dietary zinc was assessed. Results: Basal serum zinc levels in both groups were below 80 μ g/dl. The zinc upplementation led to significant increase in the levels of serum zinc in both groups .The levels of serum total antioxidant capacity, total glutathione and activity of whole blood SOD increased significantly during zinc supplementation period. The concentrations of serum MDA decreased significantly in zinc supplementation period in both groups. During the placebo period the levels of MDA in first group increased significantly, whereas the concentration of glutathione in second group decreased significantly. The body mass index (BMI) values did not change significantly during the study. Conclusion: It can be concluded that in patients undergoing hemodialysis the oxidative stress enhanced during nonsupplementation period (zinc sulfate). Low serum zinc levels are improved by zinc administration and zinc supplementation improves oxidative stress.
Shirin Babri , Naser Khalajy ,
Volume 6, Issue 4 (12-2006)
Abstract
Background & Objectives : Piracetam is a nootropic compound, which acts as a nervous system enhancer. Different processes are involved in memory formation and various parameters are able to disturb it. Due to increase of exposure possibility to electromagnetic fields in recent years and the effects of theses fields on memory consolidation, this investigation designed to clear the relation between these parameters and memory consolidation. Methods: In this research eleven groups of male wistar rats (ten rats in each group) with a mean weight of 275±25 gr aging 3-4 months were studied. To evaluate the effects of electromagnetic field, four groups of rats were exposed to 5mT/50HZ electromagnetic field for 1,4,6 and 8 hours respectively immediately after training. In other six groups 250mg/kg or 500 mg/kg piracetam were administered orally one hour before training. They were also exposed to electromagnetic field for 4,6,8 hours respectively immediately after training,. Retrieval test was performed 24 hours later in all groups. Results: 1 hour exposure on EMF had no meaningful effect on memory consolidation, however, in other three groups the electromagnetic fields impaired memory consolidation significantly compared to the control group (p<0.05). Piracetam administration with two mentioned doses significantly improved memory consolidation (p<0.05). Conclusions: Acute exposure to low intensity magnetic field can disturb memory consolidation and piracetam administration can prevent it.
Sima Khavandizadeh Aghdam ,
Volume 6, Issue 4 (12-2006)
Abstract
Background & Objectives:Different studies have emphasized the psycho-social aspects of delivery, so that these aspects are no less important than medical and midwifery factors. This is a quasi- experimental study, the main objective of which was to evaluate the effects of the continuous labor support from a supportive companiom on the process and outcome of labor in primigravida. Methods: 50 women in supported group (case) and 50 without supporative companion (control) were selected. All women were between 18-30 years, and had term pregnancy, single fetus, cephalic presentatation or spontaneous onset of labor without any complications. The supportive companions were students of midwifery. The support consisted of talking, touching, reassurance, soothing, giving encouragement and physical comfort (e.g, helping to change position, keeping lips wet and cooling). The data were analyzed using student t-test, chi-square and Fisher test. Results: The findings showed that the continuous labor support by a companion reduced length of active phase (p<0.01), cesarean section (p=0.026) and increased APGAR score in the first minute (p=0.015) and led to the early onset of breast feeding (p<0.01). Duration of second labor and fifth-minute Apgar were not significantly different in two groups. Conclusions: This study showed that the continuous labor support can result in better outcomes in deliveries.
Mohammad Aghaeishahsavari , Masoud Noroozianavval, Peghah Veisi , Hasan Argani , Nadereh Rashtchizadeh , Amir Ghorbanihaghjo, Sima Abedi-Azar, Amirmansoor Vatankah,
Volume 8, Issue 2 (6-2008)
Abstract
Background & Objective: As renin-angiotensin system (RAS) activity could affect the severity of oxidative stress and inflammatory markers the effect of enalapril and losartan on these markers in renal transplant recipients (RTRs) with RAS polymorphisms was assessed. Methods: After determination of RAS genotypes including angiotensin converting enzyme (ACE I/D), Angiotensinogen (AGT M235T) and angiotensin II type 1 receptor (ATR1 A1166C) by PCR, seventy-six RTRs recruited to four groups randomly: first group (17 patients) and second group (24 patients) were treated with E (E+: 10mg/daily) and L (L+: 50 mg/daily) alone, respectively. The third group (17 patients as positive control) received E+L (E+L+: 10mg/daily + 50 mg/daily) and the 4th group (18 patients as negative control) received no medication (E-L-). Hs-CRP and total anti-oxidant (TA) as inflammatory and anti-oxidative markers were measured after 2 months. After 2 weeks as washout period, E group changed to L and vice versa as a cross-over design. They were followed for another 8 weeks and hs-CRP and TA were retested. Results: Following up the patients (after 2, 4 months of treatment) in treated groups revealed that hs-CRP and TA levels were significantly decreased and increased (consequently) in E+L+, L+, E+ groups (P<0.05). On analyzing the relationship between RAS polymorphisms with baseline hs-CRP and TA levels, CC genotype of ATR1 had lower hs-CRP levels (P=0.04). But none of the RAS polymorphisms could predict the anti-oxidative and anti-inflammatory response rate to the drugs (P>0.05). Conclusion: E and/or L reduce hs-CRP and increase TA regardless of the RAS genotypes.
Tooraj Rashidi, Azarmdokht Alamdari Mahd, Arash Dadvand,
Volume 8, Issue 3 (9-2008)
Abstract
Background & Objectives: Candida Albicans is a fungus that frequently infects diabetic patients. Because it is very common infection in diabetics, we tried to determine the prevalence of infection and the asymptomatic carriers and show factors like age, sex, duration of diabetes and quality of disease control that probably have effect on infection.
Methods: In this study 200 diabetic patients were chosen randomly and blood samples were taken for FBS and HbA1C and then skin smears were performed from body folds (Axillaries groin interdigital folds) and probable lesions. The skin samples were cultured in Chrom-Agar medium. Then the gathered data were analyzed.
Results: Overall, from 200 patients, there were 180 (90%) negative culture and 20 (10%) positive cultures. Candidial infection in men and older patients were relatively higher than others. Candida infection in poor controlled diabetes was considerably higher .Infection in type-1 diabetes was more than type-2 diabetes. There was no correlation between duration of diabetes and prevalence of infection.
Conclusion: Candida infection is more common in diabetic patients with poor control, male and older ones.
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Volume 9, Issue 2 (6-2009)
Abstract
Background and Objectives: Ticks play an important role in different diseases of human and animals in Iran. With respects to the reports on the occurrence of Borreliasis and CCHF in Ardabil province, an attempt was made to study fauna and geographical distribution of two families of ticks, Ixodidae and Argasidae in different parts of the province. Methods: Within the scope of present study, several villages were randomly selected. From the study area during four different seasons, the total number of 2080 ticks were collected and identified according to the national systematic keys. Results: The collected ticks were categorized in 10 species from two families, and 3 genera. They were as follow: hard ticks from Ixodidae families, Hyalomma, Rhipicephalus and Heamaphysalis were found in 65.5%, 34.3% and 0.2% respectively. In Argasidae family, Ornithodoros comprise (97.2%) and Argas (2.8%). In Hyalomma genus, Hy. marginatum (16.9%) and Hy. aegyptium (%0.3) had the most and least density, respectively. Among soft ticks, Ornithodoros lahorensis (97.2%) had the highest number during autumn and winter. The main important hosts were sheep, cow, poultry, goat, buffalo and camel. Cypermethrin was evaluated against Argas persicus and O. lahorensis and results compared to that of Kordistan, Lorestan and West Azerbaijan strains. Results showed that Meshkinshar strain exhibits 1.7 fold susceptible to this insecticide than other strains at the LD50 level. Conclusion: Results of this study is useful for study on the biodiversity of ticks and their frequency. It is medically important for controlling disease and may result in reduction of disease transmission.
Babak Mostafazadeh, Esmaeil Farzaneh,
Volume 10, Issue 1 (4-2010)
Abstract
Background & Objectives : One of the limitations in management of patients suffering from decreased level of consciousness due to drug poisoning is the inability to interview the patient. The aim of the study was to compare characteristics of the two subgroups of these patients those who had a suicidal attempt history with others. Methods: In this cross-sectional study, 19 patients with suicidal attempt history and 66 patients without this history were selected among patients who were admitted for drug poisoning to referral poisoning hospitals in Tehran, Iran, in August, September and October 2009. All of them had decreased level of consciousness due to unknown drug poisoning. Demographics, poisoning characteristics, past medical history and substance use history of the patients were recorded. Results: Different between previous history of suicide action with drug material decreased level of consciousness caused by poisoning, was significantly (p=0.04). Mental disease (p > 0.01), number of tablets consumed (p=0.02), interval between drug consumption and emergency forces to reach the place (p= 0.021), described in deliberate self poisoning patients (Self Poisoning) (p=0.001), decreased level of consciousness grade (p=0.046), U.S. fail initial level of consciousness after emergency measures (p=0.02) and the need for health care and advanced next (p= 0.013) in patients with decreased level of consciousness with a history of previous suicide compared with other group were higher. Significant difference between the two age groups (P> 0.05), gender and history of illegal drug use (P> 0.05) did not exist. Conclusion: According to these findings, when dealing with patients suffering from decreased level of consciousness due to unknown drug poisoning, paying attention to history of suicidal attempts in these patients can help medical professionals in determining more effective treatment options for them. Medical staff should also record previous suicide as a risk factor in the risk assessment to consider the disease.
Reza Mahdavi , Ali Nemati , Eiraj Feizi, Mojtaba Amani , Hosein Alimohammadi Asl, Mohammad Mazani M, Phd4; Nagizadeh Bagi , Abbas , Ali Shadman , Reza Alipanah Mogadam, Asghar Pirzadeh, Mousa Ghayour Nahand,
Volume 11, Issue 2 (6-2011)
Abstract
Background & Objectives: Consumption of ω3 fatty acids supplementation inhibits oxidative stress injury, increases activity of antioxidant enzymes and decreases lipid peroxidation in gastric cancer patients. In this study, we examined effects of ω-3 fatty acid intakes on oxidative stress in gastric cancer patients undergoing chemotherapy. Methods: This double blind clinical trial study was conducted on 30 adult patients (15 cases and 15 controls) with gastric cancer during chemotherapy in Ardabil city in 2010. Case and control groups were selected by randomized allocation. Three grams ω -3 fatty acid supplementation (1.8 g EPA & 1.2 g DHA in 10 g fish oil) and placebo were given case and control groups for 45 days, respectively. Anthropometric indices (weight, height & BMI) were measured. Blood samples were taken and then biochemical factors including triglycerides, total cholesterol, HDL and LDL cholesterol, MDA, and total antioxidants were evaluated at the beginning, middle and end of the study . The data were analyzed by using Paired sample t-test, Independent sample t-test and repeated measures test. Results: MDA, Weight and BMI of omega group after intervention were significantly more than control group at the end of the study (p<0.05). Weight and BMI were decreased but serum MDA was significantly increased in control group during the study (p<0.05). Weight, BMI , and total antioxidants were significantly increased in omega group during day 30-45, (p<0.05). There were no significant differences in other biochemical factors at the end of study. Conclusion: The present investigation shows administration of ω3 fatty acid supplements to gastric cancer patients during chemotherapy increases the total antioxidants capacity and prevents the enhancement of oxidative stress.
Reza Alipanahmogadam , Mohammad Mazani , Abbas Naghizadeh Baghi, Ali Nemati, Mojtaba Amani , Bahman Bashardoost, Amir Mansour Vatankhah , Shahab Bohlooli,
Volume 11, Issue 3 (9-2011)
Abstract
Background & Objectives: Several evidences show that oxidative stress is high among patients with hemodialysis . This study was aimed to investigate the oxidative stress and serum level of zinc and copper in patients with non-diabetic hemodialysis . Methods: In a case-control study, 60 patients with non-diabetic hemdialysis referred to hemodialysis section, Ardabil Bou-Ali hospital, and 60 healthy individuals, matched by age and sex, were selected. In each group, lipid profile, blood glucose, creatinine, urea, total protein, albumin, zinc, copper, malondialdehyde, total antioxidant capacity, activity of glutathione peroxidase and superoxide dismutase were measured. The results were analyzed statistically by using Pearson correlation coefficient and Student-t test. Results: The amount of zinc, blood sugar, cholesterol, triglyceride, total protein, albumin, high density lipoprotein-C and low density lipoprotein-C were significantly lower in patients with hemodialysis in comparison with those in normal individuals. T he activity of superoxide dismutase, glutathione peroxidase in red blood cells and serum total antioxidant capacity were significantly high in patients in comparison with those in control group. However, serum concentrations of copper and malondialdehyde in two groups were not statistically different. Conclusion : The results of this study show that increase of antioxidant enzymes activity reduces the oxidative stress status in patients with non-diabetic hemodialysis . Zinc deficiency was also observed in these patients.
Darioush Mohajeri , Ali Rezaie , Ghafour Mousavi, Mohammad Mazani, Adel Rezaei-Moghadam,
Volume 12, Issue 2 (6-2012)
Abstract
Background & Objectives: The aim of the present study was to evaluate the protective effects of Crocin on rat high fat diet-induced hepatic steatosis model. Methods: For this purpose, male rats were given either standard diet as control, high fat diet for induction of hepatic steatosis and high fat diet plus Crocin through gavage at different doses (25, 50 and 100 mg kg-1/day) for protection of liver steatosis, at a period of 4 weeks in different experimental groups and compared considering serum lipid profile, serum biomarkers of liver tissue injury, hepatic antioxidant activity and liver histopathological changes. The serum levels of triglyceride, total cholesterol, low-density lipoprotein, very low-density lipoprotein, high-density lipoprotein for determination of deleterious metabolic effects, alanine aminotransferase, aspartate aminotransferase for determination of hepatocyte injury, alkaline phosphatase, bilirubin for assessment of biliary function, malondialdehyde and reduced glutathione content for assessment of liver free radical activity, the enzymatic activities of glutathione peroxidase, superoxide dismutase and catalase as indicators of antioxidation in liver tissue, were measured. Finally, the biochemical findings were matched with histopathological verifications. Results: After 4 weeks, high fat diet caused deleterious metabolic effects, including hypertriglyceridemia, hypercholesterolemia and liver dysfunction. Rats fed high fat diet alone showed increased activities of hepatocellular enzymes in plasma, significant decline in antioxidants, and elevated lipid peroxidation indices in liver. Crocin treatment significantly reduced elevated markers of liver tissue injury and malondialdehyde , and brought back the liver antioxidants and the over accumulation lipids in serum towards normal. Histopathology of the liver confirmed the changes induced by high fat diet and the heptoprotective effect of Crocin. Conclusions: Crocin exerts protective effects against hepatic steatosis in rats fed with high fat diet possibly through its antioxidant actions.
Sara Rahbar, Naser Ahmadiasl,
Volume 12, Issue 3 (9-2012)
Abstract
Background & Objectives: Numerous studies have been conducted to assess the effects of acute resistance exercises on the structure and the function of heart, but little works done on effects of chronic resistance exercises. So, the objective of current study was to investigate the long term effect of regular exercises on cardiac function and oxidative stress. Methods: Forty male Wistar rats in the weight range of 250- 300 g were used in this study. They were divided in 2 following groups: The 3 months exercises test group and control group which remained without exercises. Regular resistive exercise was carried out according to the model proposed by Tamaki et al. Test group rats exercised for three months. Finally the hearts of 10 rats in each group were taken for homogenization, oxidative stress measurement and the other ten were examined for heart function. Malondialdhyde as an index of oxidative stress and superoxide dismutase, glutathione peroxides and catalase as an indicator of antioxidant capacity with special kits were specifically measured. Results: Regular resistive exercise didn't significantly affect the rats' weight, but heart weight in exercise group showed a significant increase (p<0.05). There was a significant decrease in heart rate in exercise group (p<0.05). Left ventricle contraction strength and coronary flow had a significant increase in exercise group in comparison with control group (p<0.05). There was not any significant difference in Malondialdhyde and antioxidant enzymes activity. Conclusion: This study showed that, heart efficiency had a significant improvement under effect of regular resistive exercise. Meanwhile, regular resistive exercise didn’t have any significant effect on oxidative stress and heart antioxidant defense capacity.
Ali Shadmanfard, Ali Nemati , Abbas Naghizadeh Baghi, Mohammad Mazani,
Volume 12, Issue 5 (11-2012)
Abstract
Background & Objectives: The intake of antioxidant supplementations can have key role in prevention of oxidative stress in healthy individuals. Pomegranate has antioxidant effects and may play a role in reduction of oxidative stress in healthy males. Therefore, this study examined the effect of pomegranate juice supplementation on oxidative stress in young healthy males. Methods : In semi-experimental study, 14 healthy students living in Dormitories of Ardabil University of Medical Sciences were included. Subjects were given one cup of pomegranate juice supplementation per day for two weeks . Fasting blood samples were taken both at the start and the end of 2-week period to measure the antioxidant enzyme activities such as superoxide dismutase , glutathione peroxidase , paraoxonase - 1, aryl esterase , and the values of serum total antioxidant capacity , glutathione, and lipid profiles . Data were analyzed using descriptive and paired t - test s. Results: T he level of serum total antioxidant capacity and activities of enzymes such as superoxide dismutase, glutathione peroxidase, arylesterase, and standardized arylesterase activity were significantly increased at the end of two weeks (p<0.05). The serum level of malondialdehyde was significantly decreased after intervention (p<0.05). Changes were not significant, although the serum levels of glutathione and HDL- cholesterol increased and LDL- cholesterol decreased at the end of two weeks period. Conclusion: The results of this study showed that the pomegranate juice supplementation had beneficial effects in helping body's antioxidant defense system and reduction of oxidative stress in young healthy males . This study suggests that the pomegranate juice supplementation can be useful against oxidative stress included in dietaries of young healthy males.
Mohammad Reza Nasirzadeh , Mohammad Heykalabadi , Alireza Nourazar ,
Volume 14, Issue 2 (7-2014)
Abstract
Background & Objectives: Diabetes is a chronic disease characterized by derangement in protein, fat and carbohydrate metabolism. Most of hypoglycemic agent used in medicine for diabetes treatment are reported to have side effects for long run. On the other hand, increase in oxidative stress is effective in the genesis of diabetes. Therefore, the purpose of this study was to assess the effect of alcoholic extract of Euphorbia cyparissias on serum glucose and antioxidant enzymes level in diabetic male rats. Methods : In this study, 40 adult male Wistar rats weighting 250±20 grams divided into four groups randomly: control, diabetic animals, treatment 1 and treatment 2 which received 500 and 250 mg/kg of E.cyparissias extract for 21 days by gastric gavage, respectively. At the end of the treatment, level of antioxidant enzymes including TAC, MDA, SOD and GPX and also blood glucose were determined in animal's serum. Results : The blood glucose levels were significantly lowered in the group of treatment 1 compared to diabetic group (p<0.05). Results showed that MDA level of serum was increased significantly in diabetic group in comparison with control group (p<0.05). Furthermore, the TAC, SOD and GPX level were increased significantly in the group of treatment 1 compared to diabetic group (p<0.05). Conclusion : This study showed that oral administration of E.cyparissias extract has antidiabetic and antioxidant activity in streptozotocin induced diabetic rats.
Mostafa Nachvak , Sheida Ahani Kamangar , Ali Nemati , Saeid Sadeghieh Ahari ,
Volume 14, Issue 2 (7-2014)
Abstract
Background & Objectives: Epidemiological and experimental evidences suggest that oxidative stress is elevated in children with Down syndrome (DS). Some studies show that consumption of diets with a high content of fruits and vegetables results in a significant reduction in markers of oxidative stress. We investigated the frequency of fruits and vegetables intake in children with DS and the influence of variations in the level of this consumption on biomarkers of oxidative stress . Methods: Frequency of consumption of fruit and vegetables by children with DS were recorded by interview with the children’s parents. Serum malondialdehyde (MDA) and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) were also measured as biomarkers of oxidative stress. Data analysed using ANOVA and Student’s t-tests . Results : Mean consumption of fruits and vegetables was 4.6 and 0.74 servings per week, respectively. No significant relationships were found between consumption of fruits and vegetables with markers of oxidative stress. Based on our findings, the 65.9 % of the children did not eat any vegetables and the rest of the children consumed less than one serving per day. There was a significant correlation between the frequency of fruits and vegetable consumption (r=0.212 p <0.04). Conclusion : There wasn’t any significant relationship between fruits and vegetables consumption and indicators of oxidative stress in children with DS. This lack of correlation could be due to low consumption of fruits and vegetables in children with DS.
Farnaz Seifi-Skishahr, Arsalan Damirchi , Manoochehr Farjaminezhad , Parvin Babaei ,
Volume 15, Issue 1 (4-2015)
Abstract
Background & objectives: The “redox” state represents the oxidation/reduction potential within the cell in a way that more “redox” is the marker of health, while the more oxidized reflects predisposition to diseases. Different types of exercise training may change the thiol/disulfide ratio of redox couples such as glutathione and represent a shift in redox balance. This study was assessed the influence of high-intensity aerobic exercise on glutathione redox state in red blood cells in professional, recreational athletes and nonathletes.
Methods: Ten voluntary well trained (WT), moderately trained (MT) and untrained men subjectswere randomly selected for this semi-experimental study (mean ages of 21.10±1.72 21.70±1.88 and 20.10±1.44, respectively). Blood samples were collected before, immediately, 10 min and 30 min after acute aerobic exercise with 75%VO2max. The levels of reduced glutathione (GSH), oxidized glutathione (GSSG) and (GSH/GSSG) in red blood cells (RBCs) as well as serum levels of cortisol and creatine kinase (CK) were measured.
Results: The results showed reduction, elevation and no changes in RBCs GSH/GSSG ratio in UT, MT and WT groups, respectively. The lowest levels of GSH/GSSG ratio in RBCs and the highest one were detected in the WT and MT groups, respectively. The serum levels of cortisol and creatine kinase were increased following the exercise in three groups.
Conclusion: It is concluded that acute aerobic exercise with high intensity does not change redox balance in well trained subjects, however it is capable to shift redox balance towards more reducing environment in moderately trained subjects and also to more oxidizing one in untrained subjects.
Rasool Javanamani, Babak Nakhostin-Roohi ,
Volume 15, Issue 1 (4-2015)
Abstract
Background &objectives: Glutamine has antioxidant properties and can be used to treat some diseases. This study was conducted to assess the effect of one-week glutamine supplementation on oxidative stress indices in young healthy men.
Methods: Nineteen active healthy men volunteered for this study. This study was conducted in biochemistry lab of Ardabil branch of Islamic Azad University in Spring 2014. Participants were randomized in a double-blind placebo-controlled method into two groups: Glutamine (n = 9) and placebo group (n = 10). The participants took supplement (0.15 g/kg glutamine + 15g sweetener + 250ml water) or placebo (15g sweetener + 250ml water) daily for 7 days before main trial.Fasting blood samples were taken before and after supplementation. Total antioxidant capacity (TAC) of plasma, reduced glutathione (GHS) level of serum, and malondialdehyde (MDA) of plasma were measured.
Results: GHS significantly increased after treatment compared with pre-treatment in Glutamine group (p<0.05). There were no other within and between group significant differences in any indices (p>0.05).
Conclusions: These results showed that one-week daily oral supplementation of glutamine has been able to increase GHS probably because of greater glutamine availability .
K Tahmasebi, M Jafari, F Izadi,
Volume 15, Issue 2 (7-2015)
Abstract
Background & objectives: Diazinon (DZN) as an organophosphate pesticide widely used in agriculture is associated with reducing the antioxidant capacity of the cell. Use of thiol compounds such as N-acetyl cysteine (NAC) as an antioxidant decreases oxidative stress in the cells. The aim of this study was to investigate the effect of NAC as an antioxidant against DZN- induced oxidative stress in rat brain and heart.
Methods: In present experimental study, male Wistar rats were randomly divided into four groups including: control group (corn oil as DZN solvent), DZN group (100 mg/kg), NAC group (160 mg/kg), and NAC+DZN, all of which were given intraperitoneally. 24 hours after injection, animals were anesthetized by ether, and the brain and heart tissues were quickly removed. After tissues hemogenation, superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST) and lactate dehydrogenase (LDH) activities, as well as glutathione (GSH) and malondialdehyde (MDA) levels were determined by biochemical methods.
Results: DZN increased SOD and GST activities and MDA level and decreased LDH activity and GSH content in brain and heart. Also, DZN increased CAT activity in the heart and increased it in the brain. Administration of NAC inhibited the change in these parameters.
Conclusion: DZN through free radical production leads to enhanced membrane lipid peroxidation, depleted GSH content and oxidative stress induction in the brain and the heart. Administration of NAC as antioxidant decreases the DZN-induced oxidative stress by scavenging free radicals and GSH synthesis, but its protection is not complete.
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