scholarly journals Serum antinuclear autoantibodies are associated with measures of oxidative stress and lifestyle factors - analysis of LIPIDOGRAM2015 and LIPIDOGEN2015 studies.

2021 ◽  
Author(s):  
Paweł Krzemień ◽  
Sławomir Kasperczyk ◽  
Maciej Banach ◽  
Aleksandra Kasperczyk ◽  
Michał Dobrakowski ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Total Antioxidant Status ◽  
Lifestyle Factors ◽  
Immunofluorescence Assay ◽  
Stress Index ◽  
Antigenic Structure ◽  
Uric Acid Concentration ◽  
Serum Samples ◽  
Free Radical Damage

IntroductionOxidative stress is one of many factors suspected to promote antinuclear autoantibody (ANA) formation. Reactive oxygen species can induce changes in the antigenic structure of macromolecules, causing the immune system to treat them as “neo-antigens” and start production of autoantibodies. This study was designed to evaluate the relationship between oxidative stress markers, lifestyle factors and the detection of ANA.Material and methodsWe examined measures of oxidative stress indices of free-radical damage to lipids and proteins, such as total oxidant status (TOS), concentration of protein thiol groups (PSH), and malondialdehyde (MDA), activity of superoxide dismutase (SOD) in in 1731 serum samples. The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid concentration (UA), were also measured and the oxidative stress index (OSI -index) was calculated. All samples were tested for the presence of ANA using an indirect immunofluorescence assay (IIFA).ResultsThe presence of ANA in women was associated with lower physical activity (p=0.036), less frequent smoking (p=0.007) and drinking of alcohol (p=0.024) accompanied by significant changes in SOD isoenzymes activity (p<0.001) and a higher uric acid (UA) concentration (p<0.001). In ANA positive males we observed lower concentrations of PSH (p=0.046) and increased concentrations of MDA (p=0.047).ConclusionsThe results indicate that local oxidative stress may be associated with increased probability of ANA formation in a sex-specific manner.

Evaluation of the oxidative stress level and serum prolidase activity in patients with sleep bruxism

2020 ◽  
Vol 23 ◽  
Author(s):  
Ayse Ozcan-Kucuk ◽  
Bilal Ege ◽  
Mahmut Koparal ◽  
Ataman Gonel ◽  
Ismail Koyuncu
Keyword(s):  
Oxidative Stress ◽  
Stress Level ◽  
Total Antioxidant Status ◽  
Sleep Bruxism ◽  
Stress Index ◽  
Healthy Controls ◽  
Serum Samples ◽  
Prolidase Activity ◽  
Oxidative Stress Level ◽  
Total Antioxidant

Aims and Objective: Sleep bruxism is a complicated disease, and its cause remains controversial.If the aetiology of bruxism is resolved, the treatment can be adjusted to the prevailing aetiological factor.Thus,the aim of this study was to evaluate the oxidative stress level and serum prolidase activity in patients with sleep bruxism. Materials and Methods: Seventy healthy subjects and 51 patients with sleep bruxism were included in this study, and blood samples from all patients were collected. Serum samples were analysed for total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) and prolidase activity. Results: The prolidase,TOS and OSI levels were significantly higher in patients with bruxism than in the healthy controls (p = 0.001, p = 0.001, p = 0.001, respectively). The TAS level was significantly lower in bruxism patientsthan in the healthy controls (p = 0.003). Conclusion: The increased TOS, OSI and prolidase levels and decreased TAS levels could be assumed to result in oxidative injury in patients with sleep bruxism. However, the study could not determine whether oxidative imbalance and increased serum prolidase levels could be a cause or a result of bruxism.

scholarly journals The Evaluation of Exogenous Melatonin Administration in Supraspinatus Overuse Tendinopathy in an Experimental Rat Model

2019 ◽  
Vol 22 (2) ◽  
pp. 79-86
Author(s):  
Onur Kocadal ◽  
Murad Pepe ◽  
Nalan Akyurek ◽  
Zafer Gunes ◽  
Hatice Surer ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Critical Role ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
Serum Samples ◽  
Melatonin Treatment ◽  
Exogenous Melatonin ◽  
Melatonin Administration ◽  
Total Antioxidant ◽  
Pre Treatment

Background: Increased oxidative stress and inflammation play a critical role in the etiopathogenesis of chronic tendinopathy. Melatonin is an endogenous molecule that exhibits antioxidant and anti-inflammatory activity. The aim of this study was to evaluate the biochemical and histopathological effects of exogenous melatonin administrations in supraspinatus overuse tendinopathy.Methods: Fifty rats were divided into the following four groups: cage activity, melatonin treatment, corticosteriod therapy, and control. Melatonin (10 mg/kg, intraperitoneal; twice a day) and triamcinolone (0.3 mg/kg, subacromial; weekly) were administered to the treatment groups after the overuse period. Biochemical and histopathological evaluations were performed on serum samples and biopsies obtained from rats. Plasma inducible nitric oxide synthase (iNOS), vascular endothelial growth factor (VEGF), total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) levels were evaluated biochemically.Results: The TAS, TOS, OSI, iNOS, and VEGF values were significantly lower than the pre-treatment levels in rats receiving exogenous melatonin treatment (3 or 6 weeks) (<i>p</i><0.05). TOS, iNOS, VEGF, and OSI values after 3 weeks of triamcinolone administration, and TOS, VEGF, and OSI levels after 6 weeks of triamcinolone application, were significantly lower than the pre-treatment levels (<i>p</i><0.05).Conclusions: Exogenous melatonin application in overuse tendinopathy reduces oxidative stress and inflammation. Melatonin might be an alternative potential molecule to corticosteroids in the treatment of chronic tendinopathy.

Association between calcitriol and paricalcitol with oxidative stress in patients with hemodialysis

2020 ◽  
pp. 1-8
Author(s):  
Hasan Haci Yeter ◽  
Berfu Korucu ◽  
Elif Burcu Bali ◽  
Ulver Derici
Keyword(s):  
Oxidative Stress ◽  
Vitamin D ◽  
Antioxidant Status ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
Total Oxidant Status ◽  
Vitamin D Analog ◽  
Total Antioxidant ◽  
Oxidant Status ◽  
And Oxidative Stress

Abstract. Background: The pathophysiological basis of chronic kidney disease and its complications, including cardiovascular disease, are associated with chronic inflammation and oxidative stress. We investigated the effects of active vitamin D (calcitriol) and synthetic vitamin D analog (paricalcitol) on oxidative stress in hemodialysis patients. Methods: This cross-sectional study was composed of 83 patients with a minimum hemodialysis vintage of one year. Patients with a history of any infection, malignancy, and chronic inflammatory disease were excluded. Oxidative markers (total oxidant and antioxidant status) and inflammation markers (C-reactive protein and interleukin-6) were analyzed. Results: A total of 47% (39/83) patients were using active or analog vitamin D. Total antioxidant status was significantly higher in patients with using active or analog vitamin D than those who did not use (p = 0.006). Whereas, total oxidant status and oxidative stress index were significantly higher in patients with not using vitamin D when compared with the patients who were using vitamin D preparation (p = 0.005 and p = 0.004, respectively). On the other hand, total antioxidant status, total oxidant status, and oxidative stress index were similar between patients who used active vitamin D or vitamin D analog (p = 0.6; p = 0.4 and p = 0.7, respectively). Conclusion: The use of active or selective vitamin D analog in these patients decreases total oxidant status and increases total antioxidant status. Also, paricalcitol is as effective as calcitriol in decreasing total oxidant status and increasing total antioxidant status in patients with chronic kidney disease.

Balanced oxidative stress index in spite of decreased uric acid levels in multiple sclerosis patients

2015 ◽  
Vol 9 (2) ◽  
pp. 153-158 ◽  
Author(s):  
O. Aydin ◽  
F. Kurtulus ◽  
E. Eren ◽  
H. Y. Ellidag ◽  
N. Yılmaz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Multiple Sclerosis ◽  
Uric Acid ◽  
Stress Index ◽  
Oxidative Stress Index ◽  
Multiple Sclerosis Patients

Antioxidant Status, Oxidative Stress, and Damage in Elite Trained Kayakers and Canoeists and Sedentary Controls

2009 ◽  
Vol 19 (5) ◽  
pp. 443-456 ◽  
Author(s):  
Vitor Teixeira ◽  
Hugo Valente ◽  
Susana Casal ◽  
Franklim Marques ◽  
Pedro Moreira
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Uric Acid ◽  
Antioxidant Status ◽  
Total Antioxidant Status ◽  
Antioxidant Defense System ◽  
Strenuous Exercise ◽  
Antioxidant Intake ◽  
Total Antioxidant ◽  
Β Carotene

Strenuous physical activity is known to generate reactive oxygen species to a point that can exceed the antioxidant defense system and lead to oxidative stress. Dietary intake of antioxidants, plasma enzymatic (superoxide dismutase, glutathione reductase [Gr], and glutathione peroxidase [GPx]) activities, nonenzymatic (total antioxidant status [TAS], uric acid, α-tocopherol, retinol, α-carotene, β-carotene, lycopene, and lutein + zeaxanthin) antioxidants, and markers of lipid peroxidation (thiobarbituricacid-reactive substances [TBARS]) and muscle damage (creatine kinase [CK]) were measured in 17 elite male kayakers and canoeists under resting conditions and in an equal number of age- and sex-matched sedentary individuals. Athletes showed increased plasma values of α-tocopherol (p = .037), α-carotene (p = .003), β-carotene (p = .007), and superoxide dismutase activity (p = .002) and a lower TAS level (p = .030). Antioxidant intake (α-tocopherol, vitamin C, and β-carotene) and plasmatic GPx, Gr, lycopene, lutein + zeaxanthin, retinol, and uric acid levels were similar in both groups. Nevertheless, TBARS (p < .001) and CK (p = .011) levels were found to be significantly higher in the kayakers and canoeists. This work suggests that despite the enhanced levels of antioxidants, athletes undergoing regular strenuous exercise exhibited more oxidative stress than sedentary controls.

scholarly journals Total Oxidant and Antioxidant Status in Prepubertal Children with Obesity

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Grażyna Rowicka ◽  
Hanna Dyląg ◽  
Jadwiga Ambroszkiewicz ◽  
Agnieszka Riahi ◽  
Halina Weker ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Significant Negative Correlation ◽  
Stress Index ◽  
Healthy Children ◽  
Obese Children ◽  
Free Radical Damage ◽  
Prepubertal Children

Aims. Obesity is accompanied by the formation of oxygen free radicals, whose intensified activity without effective defense mechanisms can lead to oxidative stress and related complications. We evaluated the presence of oxidative stress in obese prepubertal children. Methods. The study included 83 healthy children aged 2–10 years (62 with obesity and 21 nonobese controls). Total oxidant capacity (TOC), total antioxidant capacity (TAC), oxidized low-density lipoprotein (ox-LDL), lipid parameters, glucose, and C-reactive protein (CRP) were measured in serum. Oxidative stress index (OSI) was calculated. Results. Serum TOC concentration was significantly higher (p<0.05) and TAC concentration was lower (p<0.05) in obese children. OSI was higher (p<0.01) in obese subjects compared with controls. CRP levels were normal in all children, but median CRP value was higher (p<0.01) and HDL cholesterol levels were lower (p<0.05) in the obese group. We found a significant negative correlation between TAC and ox-LDL concentrations (r=−0.27, p<0.05) in obese children. Furthermore, obesity duration was positively correlated with TOC level (r=0.32, p<0.05) in this group. Conclusions. Obesity-related oxidative stress already occurs in prepubescence. Early obesity diagnosis and the necessary therapeutic activity implementation is a vital strategy for the prophylaxis of free radical damage and related multiorgan complications.

scholarly journals Relationship Between Oxidative Stress Parameters and Cystatin C Levels in Patients With Severe Preeclampsia

Medicina ◽  
2013 ◽  
Vol 49 (3) ◽  
pp. 19 ◽  
Author(s):  
Saban Yalcin ◽  
Turgay Ulas ◽  
Mehmet Eren ◽  
Harun Aydogan ◽  
Aysun Camuzcuoglu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Cystatin C ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
Oxidative Stress Index ◽  
Oxidative Stress Parameters ◽  
Total Antioxidant ◽  
Group 2 ◽  
Oxidant Status ◽  
Group 1

Background and Objective. Oxidative stress is believed to play a role in the development of preeclampsia (PE). It is known that an increased cystatin C level is also associated with PE. The aim of this study was to investigate the relationship between oxidative stress parameters and cystatin C levels in patients with severe PE. Material and Methods. Forty-four patients with severe PE and 40 healthy pregnant women were recruited for the study. All study subjects were divided into 2 groups: group 1 (n=44) consisted of patients with severe PE, and group 2 (n=40) included healthy pregnant subjects. Blood samples were obtained from all subjects in order to measure the cystatin C level, total antioxidant status, and total oxidant status. The oxidative stress index was calculated. Results. The group 1 had significantly higher cystatin C, total oxidant status, oxidative stress index levels and lower total antioxidant status level as compared with the group 2 (P=0.001, P<0.001, P<0.001, P=0.036, respectively). The serum cystatin C level was significantly correlated with the oxidative stress index (r=0.609, P<0.001). Conclusions. The present study demonstrated that both oxidative stress and cystatin C levels were increased in patients with PE, and the increased cystatin C levels seem to be a consequence of oxidative stress. Correspondence to

Effects of fasting and refeeding on the antioxidant system in cockerels and pullets

2007 ◽  
Vol 55 (2) ◽  
pp. 181-189 ◽  
Author(s):  
Suzana Milinković-Tur ◽  
Z. Stojević ◽  
Jasna Piršljin ◽  
Maja Zdelar-Tuk ◽  
Nina Poljičak-Milas ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Blood Plasma ◽  
Whole Blood ◽  
Plasma Concentrations ◽  
Control Level ◽  
Uric Acid Concentration ◽  
Total Lipids ◽  
Antioxidant Defence System ◽  
Fasting And Refeeding

The effect of fasting and refeeding on total antioxidant status (TAS), glutathione peroxidase (GSH-Px) activity and concentration of some non-enzymatic antioxidant compounds was studied in cockerels and pullets. Blood was collected before and after 48-h fasting and 24 h after refeeding. In cockerels, fasting resulted in a significant decrease of TAS and uric acid concentration. After refeeding, the concentration of TAS remained significantly lower as compared to the control level. At the same time, blood plasma level of total lipids increased in comparison to the control and post-fasting values. In pullets, fasting resulted in a significant decrease of whole blood haemolysate GSH-Px activity and blood plasma concentrations of albumin and uric acid. Simultaneously, a significant increase in total lipids and cholesterol was obtained. In pullets, refeeding resulted in a further decrease of TAS to undetectable values, a significant decrease of blood plasma cholesterol, and a significant increase of GSH-Px in the whole blood haemolysate and in blood plasma uric acid content. The results indicate that fasting has a negative impact on the antioxidant defence system of the blood, which leads to a reduced resistance to oxidative stress in both cockerels and pullets. However, pullets seem to be more susceptible to fasting-provoked oxidative stress than cockerels.

Protective effect of adenosine triphosphate against sunitinib-related skin damage in rats

2020 ◽  
Vol 39 (12) ◽  
pp. 1737-1746
Author(s):  
N Yıldırım ◽  
A Karatas ◽  
M Cengiz ◽  
E Onalan ◽  
GN Yazıcı ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Protective Effect ◽  
Adenosine Triphosphate ◽  
Histopathological Examination ◽  
Total Antioxidant Status ◽  
Stress Index ◽  
The Sun ◽  
Skin Damage ◽  
Cutaneous Side Effects ◽  
Total Antioxidant

Cutaneous side effects associated with sunitinib use are a major problem in patients receiving cancer treatment. The aim of this study was to investigate the protective effect of adenosine triphosphate (ATP) against possible skin damage resulting from sunitinib use in rats. Thirty Albino Winstar rats were divided into the following three groups: healthy controls (HCs, n = 10), sunitinib (SUN, n = 10), and sunitinib + ATP (SAT, n = 10). ATP was injected intraperitoneally at a dose of 2 mg/kg. One hour subsequent to the administration of ATP and 0.9% NaCl, the SAT and SUN groups were orally administered a dose of 25 mg/kg sunitinib to the stomach. Macroscopic evaluation of the skin indicated lower levels of skin damage in the SAT group than in the SUN group. As an indicator of oxidative stress, malondialdehyde (MDA), total oxidant status (TOS), and oxidative stress index (OSI) levels were significantly higher in the SUN group than in the HC group, while total glutathione (tGSH) and total antioxidant status (TAS) levels were significantly lower. However, MDA, TOS, and OSI levels were significantly lower in the SAT group than in the SUN group, while tGSH and TAS levels were significantly higher. Histopathological examination revealed keratin plugs with edema, vasopathology, and inflammatory cell infiltration in the SUN group. The SAT group showed less necrotic epithelium, keratin plugs, edema, and vasopathology than the SUN group. ATP can be effective in preventing skin damage caused by sunitinib use by reducing oxidative stress.

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