The impact of psychogenic stressors on oxidative stress markers and patterns of CYP2E1 expression in mice liver

2012 ◽  
Vol 19 (3) ◽  
pp. 215-219 ◽  
Author(s):  
Oksana Maksymchuk ◽  
Mykola Chashchyn
Keyword(s):  
Oxidative Stress ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Cyp2e1 Expression ◽  
Mice Liver ◽  
The Impact

scholarly journals Effects of Advanced Age, Pituitary Pars Intermedia Dysfunction and Insulin Dysregulation on Serum Antioxidant Markers in Horses

Antioxidants ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 444
Author(s):  
Agnieszka Żak ◽  
Natalia Siwińska ◽  
Elżbieta Chełmecka ◽  
Barbara Bażanów ◽  
Ewa Romuk ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Sulfhydryl Group ◽  
Study Groups ◽  
Total Serum ◽  
Pars Intermedia ◽  
Oxidative Stress Markers ◽  
Sod Activity ◽  
Stress Markers ◽  
Insulin Dysregulation ◽  
The Impact

The study aims to assess the impact of age, pituitary pars intermedia dysfunction (PPID) and insulin dysregulation (ID) in horses on selected oxidative stress markers. The study includes 32 horses, divided into three groups: “young” adult group (aged 8–16 years old) “geriatric” group (aged 18–24 years old) and the “PPID” group (aged 15–31 years old). The PPID group was further divided into two subgroups: PPID ID+ and PPID ID− based on presence or absence of ID. We measured serum antioxidant stress markers in all horses: total oxidant status (TOS), total antioxidant capacity (TAC), ceruloplasmin (CER), lipofuscin (LPS), malondialdehyde (MDA) and thiols concentrations (containing sulfhydryl group -SH) as well as enzymatic systems: total superoxide dismutase (SOD), cytoplasmic SOD (CuZnSOD), mitochondrial SOD activity (MnSOD). Total serum thiols were significantly lower in the geriatric group and in the PPID group compared to the young group. The MnSOD concentration was higher in the PPID ID+ group compared to the PPID ID−. LPS and MDA concentrations were lower in the PPID ID+ group compared to the PPID ID− group. In the selected study groups of horses, older age, the presence of PPID and ID in the case of PPID had no effect on the studied oxidative stress markers.

scholarly journals Assessment of the Antioxidant Potential of Hypoestes rosea Leaf in Lead-acetate-induced Albino Rats

2020 ◽  
pp. 45-55
Author(s):  
F. K. Uwikor ◽  
E. O. Nwachuku ◽  
F. Igwe ◽  
E. S. Bartimaeus
Keyword(s):  
Oxidative Stress ◽  
Lead Acetate ◽  
Positive Control ◽  
Post Treatment ◽  
Albino Rats ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Pre Treatment ◽  
The Impact ◽  
Dose Dependent

Hypoestes rosea has been used as a traditional medicine in the Niger delta for dysfunction of the endocrine system. However, there has been no known study on the effects of hypoestes rosea on oxidative stress. In this study we evaluated the effect of aqueous extract of Hypoestes rosea (AEHR) leaf on oxidative stress markers of lead acetate induced male and female albino rats at acute and sub-chronic stages in pre-treatment and post-treatment phases. Animals were divided into 17 groups of five each for both sexes in the treatment groups, while the positive control group had 10 animals in each sex. 8 groups were for the acute phase of the study for 21 days in each sex, while 8 were for 35 days for the sub chronic stage of the study. Negative Control (NC) group received rat feed only, Experimental (EC) group received 100 mg/kg bwt/day for 21 days at acute and 35 days for sub chronic.  Positive Control (PC) group received 60mg/kg b.wt per day of lead acetate for 35 days. The other 3 groups received 100 mgkg, 200 mg/kg and 300 mg/kg b. wt respectively for 14 and 28 days either as pre treatment or post treatment, for both sexes of the albino rats. Samples were taken at the end of the study period through the jugular vein under chloroform anaesthesia. Results showed lead acetate induced oxidative stress in the rats, evidenced by the significantly decreased (p < 0.05) Superoxide Dismutase (SOD) and Total Antioxidant Capacity (TAC) between the NC and PC groups. The plant in a dose dependent pattern was able to significantly (p < 0.05), reverse the effect of lead acetate in the Post and pre treatment phases. Our study also shows that dose dependent AEHR extract significantly reduced the impact of lead in oxidative stress markers. In conclusion, consumption of AEHR by albino rats could help protect against lead acetate induced oxidative stress.

scholarly journals The Impact of Rapid Weight Loss on Oxidative Stress Markers and the Expression of the Metabolic Syndrome in Obese Individuals

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Eva Tumova ◽  
Wensheng Sun ◽  
Peter H. Jones ◽  
Michal Vrablik ◽  
Christie M. Ballantyne ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Weight Loss ◽  
Oxidative Stress Marker ◽  
Rapid Weight Loss ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
The Metabolic Syndrome ◽  
Obese Subjects ◽  
The Impact

Objective. Obesity is linked with a state of increased oxidative stress, which plays an important role in the etiology of atherosclerosis and type 2 diabetes mellitus. The aim of our study was to evaluate the effect of rapid weight loss on oxidative stress markers in obese individuals with metabolic syndrome (MetS).Design and Methods. We measured oxidative stress markers in 40 obese subjects with metabolic syndrome (MetS+), 40 obese subjects without metabolic syndrome (MetS−), and 20 lean controls (LC) at baseline and after three months of very low caloric diet.Results. Oxidized low density lipoprotein (ox-LDL) levels decreased by 12% in MetS+ subjects, associated with a reduction in total cholesterol (TC), even after adjustment for age and sex. Lipoprotein associated phospholipase A2(Lp-PLA2) activity decreased by 4.7% in MetS+ subjects, associated with a drop in LDL-cholesterol (LDL-C), TC, and insulin levels. Multivariate logistic regression analysis showed that a model including ox-LDL, LpPLA2activity, and myeloperoxidase (MPO) improved prediction of MetS status among obese individuals compared to each oxidative stress marker alone.Conclusions. Oxidative stress markers were predictive of MetS in obese subjects, suggesting a higher oxidative stress. Rapid weight loss resulted in a decline in oxidative stress markers, especially in MetS+ patients.

scholarly journals Blood Contamination in Saliva: Impact on the Measurement of Salivary Oxidative Stress Markers

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Natália Kamodyová ◽  
Lenka Baňasová ◽  
Katarína Janšáková ◽  
Ivana Koborová ◽  
Ľubomíra Tóthová ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Status ◽  
Dental Treatment ◽  
Dental Hygiene ◽  
Oxidative Stress Markers ◽  
Oral Diseases ◽  
Blood Contamination ◽  
Stress Markers ◽  
Markers Of Oxidative Stress ◽  
The Impact

Salivary oxidative stress markers represent a promising tool for monitoring of oral diseases. Saliva can often be contaminated by blood, especially in patients with periodontitis. The aim of our study was to examine the impact of blood contamination on the measurement of salivary oxidative stress markers. Saliva samples were collected from 10 healthy volunteers and were artificially contaminated with blood (final concentration 0.001–10%). Next, saliva was collected from 12 gingivitis and 10 control patients before and after dental hygiene treatment. Markers of oxidative stress were measured in all collected saliva samples. Advanced oxidation protein products (AOPP), advanced glycation end products (AGEs), and antioxidant status were changed in 1% blood-contaminated saliva. Salivary AOPP were increased in control and patients after dental treatment (by 45.7% and 34.1%,p<0.01). Salivary AGEs were decreased in patients after microinjury (by 69.3%,p<0.001). Salivary antioxidant status markers were decreased in both control and patients after dental treatment (p<0.05andp<0.01). One % blood contamination biased concentrations of salivary oxidative stress markers. Saliva samples with 1% blood contamination are visibly discolored and can be excluded from analyses without any specific biochemic detection of blood constituents. Salivary markers of oxidative stress were significantly altered in blood-contaminated saliva in control and patients with gingivitis after dental hygiene treatment.

scholarly journals The Impact of Senile Cataract Maturity on Blood Oxidative Stress Markers and Glutathione-Dependent Antioxidants: Relations with Lens Variables

2012 ◽  
Vol 31 (3) ◽  
pp. 184-192 ◽  
Author(s):  
Dijana Mirić ◽  
Bojana Kisić ◽  
Lepša Žorić ◽  
Zana Dolićanin ◽  
Radoslav Mitić ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Multivariate Logistic Regression Analysis ◽  
Senile Cataract ◽  
Oxidative Stress Markers ◽  
Multivariate Logistic Regression ◽  
Glutathione S Transferase ◽  
Stress Markers ◽  
Systemic Oxidative Stress ◽  
Antioxidant Enzymes Activities ◽  
The Impact

The Impact of Senile Cataract Maturity on Blood Oxidative Stress Markers and Glutathione-Dependent Antioxidants: Relations with Lens VariablesOxidative stress is implicated in senile cataract (SC) genesis, although the impact of SC maturity on blood oxidative stress markers is unclear. Total hydroperoxides, malondialdehyde (MDA), glutathione (GSH), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione S-transferase (GST) were measured in the blood and lens samples of patients having either immature (n=31) or mature SC (n=50), and in 22 blood samples from noncataract controls. Compared to controls, SC patients had higher plasma MDA and serum GST, and decreased plasma GR and GSH levels. Plasma GPx as well as hydroperoxides differed from control values only in patients with mature SC. The multivariate logistic regression analysis showed that the fall of plasma GR activity (OR 5.14; CI 1.82-14.51;p=0.0020), as well as serum GST activity (OR 3.84; CI 1.36-10.83;p=0.0108) were independently associated with the maturity of SC. Lens hydroperoxides, MDA and GST, showed no correlation with correspondent blood values, in contrast to GPx (r=0.715; p<0.001) and GR (r=0.703; p<0.001). This study showed that the severity of SC is associated with increased systemic oxidative stress, which could be due to the fall of GSH-dependent antioxidant enzymes activities.

Folic acid ameliorates neonatal isolation-induced autistic like behaviors in rats: Epigenetic modifications of BDNF and GFAP promotors’

2021 ◽  
Author(s):  
Omyma G. Ahmed ◽  
Ghaydaa A. Shehata ◽  
Rasha M. Ali ◽  
Rania Makboul ◽  
Eman S. H. Abd Allah ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Folic Acid ◽  
Frontal Cortex ◽  
Structural Changes ◽  
Folic Acid Supplementation ◽  
Oxidative Stress Markers ◽  
Acid Supplementation ◽  
Stress Markers ◽  
The Impact ◽  
Acid Administration

The current study investigated the role of epigenetic dysregulation of brain derived neurotrophic factor (BDNF) and glial fibrillary acidic protein (GFAP) genes and oxidative stress as possible mechanisms of autistic-like behaviors in neonatal isolation model in rats and the impact of folic acid administration on these parameters. Forty Wistar albino pups were used as follows: control, folic acid administered, isolated, and isolated folic acid treated groups. Isolated pups were separated from their mothers for 90 min daily from postnatal day (PND) 1 to 11. Pups (isolated or control) received either the vehicle or folic acid (4mg/kg/day) orally from PND 1 to 29. Behavioral tests were done from PND 30 to 35. Oxidative stress markers and antioxidant defense in the frontal cortex homogenate were determined. DNA methylation of BDNF and GFAP genes was determined by qPCR. Histopathological examination was carried out. Neonatal isolation produced autistic-like behaviors that were associated with BDNF and GFAP hypomethylation, increased oxidative stress, increased inflammatory cell infiltration, and structural changes in the frontal cortex. Folic acid administration concurrently with isolation, reduced neonatal isolation-induced autistic-like behaviors, decreased oxidative stress, regained BDNF and GFAP gene methylation, ameliorated structural changes in the frontal cortices of isolated folic acid treated rats. Novelty bullets • Neonatal isolation (NI) induces “autistic-like” behavior and these behaviors are reversed by folic acid supplementation. • Molecular and biochemical analyses showed that -NI induces DNA hypomethylation of BDNF and GFAP, increased oxidative stress markers, and neuroinflammation -All of these changes were reversed by daily folic acid supplementation.

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