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Full-Text Articles in Medicine and Health Sciences
Radioprotective Effects Of Melatonin And Thymoquinone On Liver, Parotid Gland, Brain, And Testis Of Rats Exposed To Total Body Irradiation, Mehmet Koç, Çi̇ğdem Damla Deni̇z, Mehmet Aki̇f Eryilmaz, Yilmaz Tezcan, Mehmet Gürbi̇lek
Radioprotective Effects Of Melatonin And Thymoquinone On Liver, Parotid Gland, Brain, And Testis Of Rats Exposed To Total Body Irradiation, Mehmet Koç, Çi̇ğdem Damla Deni̇z, Mehmet Aki̇f Eryilmaz, Yilmaz Tezcan, Mehmet Gürbi̇lek
Turkish Journal of Medical Sciences
Background/aim: This study aimed to investigate thymoquinone (TQ), and melatonin's radioprotective effects on liver, parotid gland, brain, and testis of rats which were exposed to total body irradiation (IR). Materials and methods: Thirty adult Wistar rats were randomly divided into four groups that are Group 1 (control group): total body IR only, Group 2: IR-Melatonin (10 mg/kg), Group 3: IR-TQ (10 mg/kg), and Group 4 (sham group): nothing. Total body IR dose was 6 Gy. Tissue samples were taken 90 min after IR. The measurements of malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) were performed in all groups. …
Protective Effects Of Erdosteine, Vitamin E, And Vitamin C On Renal Injury Induced By The Ischemia-Reperfusion Of The Hind Limbs In Rats, Rana Sirmali, Abdullah Armağan, Faruk Öktem, Efkan Uz, Aynur Kirbaş, Soner Dönmez, Haci Ramazan Yilmaz, Mesrur Selçuk Silay, Mehmet Sirmali
Protective Effects Of Erdosteine, Vitamin E, And Vitamin C On Renal Injury Induced By The Ischemia-Reperfusion Of The Hind Limbs In Rats, Rana Sirmali, Abdullah Armağan, Faruk Öktem, Efkan Uz, Aynur Kirbaş, Soner Dönmez, Haci Ramazan Yilmaz, Mesrur Selçuk Silay, Mehmet Sirmali
Turkish Journal of Medical Sciences
To compare the protective efficacy of erdosteine and vitamins C and E against renal injury caused by hind limb ischemia-reperfusion (I/R). Materials and methods: Rats were split into 4 groups: group I as the control, group II as I/R, group III as I/R + erdosteine, and group IV as I/R + vitamins C and E. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) tissue levels were determined. Results: MDA levels were found comparable with the control group in groups II and III. However, they were considerably decreased in group IV when compared to group II …
Protective Effect Of Vardenafil On Ischemia–Reperfusion Injury In Rat Ovary, Hati̇ce Baş, Özlem Kara, Mustafa Kara, Di̇lek Pandir
Protective Effect Of Vardenafil On Ischemia–Reperfusion Injury In Rat Ovary, Hati̇ce Baş, Özlem Kara, Mustafa Kara, Di̇lek Pandir
Turkish Journal of Medical Sciences
To investigate the effect of vardenafil on ischemia–reperfusion (I/R) injury in rat ovary. Materials and methods: A total of 21 Wistar rats were divided into 3 groups. In group 1, ovary torsion was not performed and no drug was administered. In group 2, 1 h of ischemia and 2 h of reperfusion were performed and no drug was given. In group 3, 1 h of ischemia and 2 h of reperfusion were performed and 1 mg/kg vardenafil was administered after 30 min of ischemia. Right ovaries were surgically removed in all groups. Malondialdehyde (MDA) levels and activities of superoxide dismutase …
Effects Of Lycopene On Plasma Glucose, Insulin Levels, Oxidative Stress, And Body Weights Of Streptozotocin-Induced Diabetic Rats, Muhsi̇n Aydin, Sefa Çeli̇k
Effects Of Lycopene On Plasma Glucose, Insulin Levels, Oxidative Stress, And Body Weights Of Streptozotocin-Induced Diabetic Rats, Muhsi̇n Aydin, Sefa Çeli̇k
Turkish Journal of Medical Sciences
To determine possible therapeutic effects of oral lycopene supplementation on plasma insulin levels, lipid peroxidation, blood glucose levels, and the antioxidant defense system of streptozotocin-induced diabetic rats. Materials and methods: Classical biochemical methods were used to determine plasma malondialdehyde (MDA), nitric oxide (NO), glutathione peroxidase (GSH-Px), catalase (CAT), superoxide dismutase (SOD), and glutathione (GSH) levels. Enzyme-linked immunosorbent assay was used to determine plasma insulin levels and reverse transcriptase-polymerase chain reaction was used to determine the levels of brain antioxidant enzymes (SOD, CAT, and GSH-Px). Results: It was found that the diabetes-related increase in blood glucose levels was reduced by supplementation …
Protective Activity Of The Methanol Extract Of Usnea Longissima Against Oxidative Damage And Genotoxicity Caused By Aflatoxin B_1 In Vitro, Güleray Ağar, Ali̇ Aslan, Eli̇f Kotan Sarioğlu, Lokman Alpsoy, Selçuk Çeker
Protective Activity Of The Methanol Extract Of Usnea Longissima Against Oxidative Damage And Genotoxicity Caused By Aflatoxin B_1 In Vitro, Güleray Ağar, Ali̇ Aslan, Eli̇f Kotan Sarioğlu, Lokman Alpsoy, Selçuk Çeker
Turkish Journal of Medical Sciences
To investigate the effects of methanol extracts obtained from Usnea longissima (UME) on the genotoxicity and oxidative stress of aflatoxin B_1 (AFB_1) in cultured human blood cells. Materials and methods: Sister chromatid exchange (SCE) and micronucleus (MN) tests were used for estimation of genotoxic influences. Activities of superoxide dismutase (SOD) and glutathione peroxidase (GPx) and the malondialdehyde (MDA) level were also measured to evaluate the antioxidative effect of UME. Results: In the SCE and MN test systems, it was observed that UME suppressed the mutagenic effects of AFB_1. Furthermore, an increase of MDA level and a decrease of SOD and …
The Effect Of Caffeic Acid Phenethyl Ester (Cape) Treatment On Levels Of Mda, No And Antioxidant Enzyme Activities In Retinas Of Streptozotocin-Induced Diabetic Rats, Mustafa Durmuş, H. Ramazan Yilmaz, Efkan Uz, Nurten Özçeli̇k
The Effect Of Caffeic Acid Phenethyl Ester (Cape) Treatment On Levels Of Mda, No And Antioxidant Enzyme Activities In Retinas Of Streptozotocin-Induced Diabetic Rats, Mustafa Durmuş, H. Ramazan Yilmaz, Efkan Uz, Nurten Özçeli̇k
Turkish Journal of Medical Sciences
Aim: This study was performed to determine the effect of caffeic acid phenethyl ester (CAPE) treatment on levels of malondialdehyde (MDA) and nitric oxide (NO) and activities of antioxidant enzymes in retinas of streptozotocin (STZ)-induced diabetic rats. Materials and Methods: Twenty-seven rats were enrolled and divided into three groups: group 1: non-diabetic rats as control (n = 9); group 2: STZ-induced, untreated diabetic rats (n = 8); and group 3: STZ-induced, CAPE-treated diabetic rats (n = 10). Levels of MDA and NO and the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in retinal tissues were analyzed. Results: In …
Effect Of Metformin Or Gliclazide On Lipid Peroxidation And Antioxidant Levels In Patients With Diabetes Mellitus, Ramazan Memi̇şoğullari, Mehmet Türkeli̇, Ebubeki̇r Bakan, Fati̇h Akçay
Effect Of Metformin Or Gliclazide On Lipid Peroxidation And Antioxidant Levels In Patients With Diabetes Mellitus, Ramazan Memi̇şoğullari, Mehmet Türkeli̇, Ebubeki̇r Bakan, Fati̇h Akçay
Turkish Journal of Medical Sciences
Aim: The association between oxidative stress and diabetic complications is well known. The main goal of antidiabetic therapy is to prevent the complications of diabetes. Gliclazide (sulfonylurea) and metformin (biguanide) are two oral antidiabetic drugs that have been proven to prevent diabetic complications. In this study, we aimed to investigate the antioxidant effects of gliclazide or metformin. Materials and Methods: In this study, we evaluated 46 patients with type 2 diabetes mellitus. The patients were divided into three groups according to their treatment modality of gliclazide, metformin, or diet. Erythrocyte glutathione peroxidase (Gpx), glutathione S-transferase (GST), and catalase (CAT) activities …
Effects Of Cooking Techniques On Antioxidant Enzyme Activities Of Some Fruits And Vegetables, İmge B. Ergüder, Aslihan Avci, Erdi̇nç Devri̇m, İlker Durak
Effects Of Cooking Techniques On Antioxidant Enzyme Activities Of Some Fruits And Vegetables, İmge B. Ergüder, Aslihan Avci, Erdi̇nç Devri̇m, İlker Durak
Turkish Journal of Medical Sciences
Aim: The aim of this study was to investigate possible effects of cooking techniques on antioxidant enzyme activities in broccoli, tomato, red cabbage, parsley, carrot, green pepper, lemon, onion, and garlic, which are consumed frequently in our daily diet. Materials and Methods: Superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities were measured in fresh and thermally treated (boiling, microwaving and baking) fruits and vegetables. Results: When compared to raw vegetables, SOD, CAT and GSH-Px activities were found to diminish in most of the thermally treated vegetables except tomato, in which GSH-Px and CAT activities were found to increase. …
Mao Inhibitors In Aging: Can They Serve As Protective Agents In Cardiac Tissue Against Oxidative Stress?, Ferhan Külahçioğlu Gi̇rgi̇n, Mert Özgönül, Güli̇nnaz Alper, Gülri̇z Menteş, Bi̇ltan Ersöz, Eser Yildirim Sözmen
Mao Inhibitors In Aging: Can They Serve As Protective Agents In Cardiac Tissue Against Oxidative Stress?, Ferhan Külahçioğlu Gi̇rgi̇n, Mert Özgönül, Güli̇nnaz Alper, Gülri̇z Menteş, Bi̇ltan Ersöz, Eser Yildirim Sözmen
Turkish Journal of Medical Sciences
Biological damage mediated by reactive oxygen species has been increasingly recognized in aging phenomena in recent decades. The increase in catecholamine metabolism is yet another physiological change in aging, predisposing the organism to supranormal hydrogen peroxide produc-tion as a by-product. This study was undertaken to investigate the alterations in oxidant- antioxidant status in rat cardiac tissue during aging. The effects of acute administration of monoamine oxidase (MAO) inhibitors on this status were also investigated to find possible preventive strategies in conjugate aging. MAO activities, malondialdehyde MDA and diene conjugate levels as well as superoxide dismutase and catalase activities were determined …
A Novel Clinical And Laboratory Based Approach To Coronary Heart Disease: Relationship Between Angiography Findings, Antioxidant Enzymes And No, Bülent Sözmen, Fevzi̇ye Uysal, Dervi̇ş Gazi̇tepe, Leyla Aslan, Eser Yildirim Sözmen
A Novel Clinical And Laboratory Based Approach To Coronary Heart Disease: Relationship Between Angiography Findings, Antioxidant Enzymes And No, Bülent Sözmen, Fevzi̇ye Uysal, Dervi̇ş Gazi̇tepe, Leyla Aslan, Eser Yildirim Sözmen
Turkish Journal of Medical Sciences
Atherosclerosis is the most common manifestation of cardiovascular disease. However the exact mechanisms that take place in its pathogenesis have not yet been completely understood. Free radicals and lipid peroxidation may play an important role in the pathogenesis of atherosclerosis and endothelial dysfunction also may be an aggravating factor in this process. Unfortunately all of the previous studies have focused on the atherosclerotic tissue. Our aim was to establish a relationship between the antioxidant enzymes and plasma nitrate as an index of whole-body, endogenous nitric oxide production in coronary heart disease and also the relationship between these parameters and the …
Plasma Antioxidant Status And Nitrate Levels Inpatients With Hypertension Andcoronary Heart Disease, Bülent Sözmen, Cahit Kazaz, Dilek Taskiran, Leyla Aslan, Akan Akyol, Eser Yıldırım Sözmen
Plasma Antioxidant Status And Nitrate Levels Inpatients With Hypertension Andcoronary Heart Disease, Bülent Sözmen, Cahit Kazaz, Dilek Taskiran, Leyla Aslan, Akan Akyol, Eser Yıldırım Sözmen
Turkish Journal of Medical Sciences
In this study, we investigated first; the possible involvement of nitric oxide and antioxidant enzyme level in the pathogenesis of essential hypertension and second we investigated serum nitrite-nitrate and antioxidant enzyme activities and lipid profiles (total, HDL and LDL cholesterol, trygliceride) to determine the relationship between these parameters in atherosclerosis. 13 patients with coronary heart disease, 18 patients with essential hypertension and 16 age-matched health subjects were taken into this study. Plasma nitrite, nitrate levels were measured by Griess reaction, erythrocyter superoxide dismutase and catalase activities were determined by the methods of Misra&Fridovich and Aebi, respectively. Serum lipid analysis were …