Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2012 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population

Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2011 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population

Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2013 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population

Variability of Hormonal Stress Markers Collected from a Managed Dolphin Population

2014 ◽  
Author(s):  
Dorian S. Houser ◽  
Samuel Wasser ◽  
John F. Cockrem ◽  
Nick Kellar ◽  
Tracy Romano
Keyword(s):  
Stress Markers ◽  
Dolphin Population

Protective role of peroxiredoxin-4 in heart failure

2020 ◽  
Vol 134 (1) ◽  
pp. 71-72
Author(s):  
Naseer Ahmed ◽  
Masooma Naseem ◽  
Javeria Farooq
Keyword(s):  
Heart Failure ◽  
Cardiac Fibroblasts ◽  
Protective Role ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Total Antioxidant ◽  
Galectin 3 ◽  
Consequent Increase ◽  
And Oxidative Stress

Abstract Recently, we have read with great interest the article published by Ibarrola et al. (Clin. Sci. (Lond.) (2018) 132, 1471–1485), which used proteomics and immunodetection methods to show that Galectin-3 (Gal-3) down-regulated the antioxidant peroxiredoxin-4 (Prx-4) in cardiac fibroblasts. Authors concluded that ‘antioxidant activity of Prx-4 had been identified as a protein down-regulated by Gal-3. Moreover, Gal-3 induced a decrease in total antioxidant capacity which resulted in a consequent increase in peroxide levels and oxidative stress markers in cardiac fibroblasts.’ We would like to point out some results stated in the article that need further investigation and more detailed discussion to clarify certain factors involved in the protective role of Prx-4 in heart failure.

Oxidative stress markers in women with polycystic ovary syndrome without insulin resistance

2018 ◽  
Author(s):  
Reveka Gyftaki ◽  
Sofia Gougoura ◽  
Nikolaos Kalogeris ◽  
Vasiliki Loi ◽  
George Koukoulis ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Polycystic Ovary Syndrome ◽  
Polycystic Ovary ◽  
Oxidative Stress Markers ◽  
Ovary Syndrome ◽  
Stress Markers

Known Hepatoprotectors Act as Antioxidants and Immune Stimulators in Stressed Mice: Perspectives in Animal Health Care

2019 ◽  
Vol 24 (40) ◽  
pp. 4825-4837 ◽  
Author(s):  
Gustavo Alberto de la Riva ◽  
Francisco Javier López Mendoza ◽  
Guillermin Agüero-Chapin
Keyword(s):  
Oxidative Stress ◽  
Animal Health ◽  
Cellular Damage ◽  
Farm Animals ◽  
Physiological Status ◽  
Stress Markers ◽  
Glutathione Peroxidases ◽  
Transport Chain ◽  
Exogenous Compounds ◽  
Relationship Of

Background: Oxygen is involved in a variety of physiological reactions in aerobic organisms, such as those produced in the electron transport chain, hydroxylation, and oxygenation. Reactive oxygen species (ROS) are naturally formed as byproducts from these previously reactions involving the O2 molecule; they are made up of superoxide anion (O2−), hydroxyl radical (HO−), hydrogen peroxide (H2O2), nitric oxide (NO), peroxyl (ROO−), and reactive aldehyde (ROCH). Under certain environmental stress conditions, ROS are accumulated causing cellular damage but also triggering the overexpression of several enzyme classes such as superoxide dismutases (SOD), catalases (CAT) and glutathione peroxidases (GPx), which represent an important intrinsic antioxidant defence line. Liver is a key organ in vertebrates including farm animals and human. The oxidative stress plays an important role in systemic malfunctions including hepatic, renal and immunological, disorders. Methods: This review presents a brief update about the relationship of oxidative stress with hepatic, renal and immunological malfunctions in stressed organisms. Cellular and exogenous hepatoprotective compounds share also the ability to scavenge ROS acting as antioxidants and in many cases as stimulators of immune response in stressed organisms. We present the effect of some hepatoprotectors on the hepatic, renal and immunological function in stressed mice by the jointed evaluation of biological and oxidative stress markers. Conclusion: Hepatoprotective effect of several exogenous compounds is very associated with their antioxidant capacity. This fact is relevant for keeping oxidant/antioxidant balance in the respective organs, but also for maintaining the physiological status of the whole organism.

Comparison of Salivary Antioxidants and Oxidative Stress Status in Gestational Diabetes Mellitus and Healthy Pregnant Women

2020 ◽  
Vol 20 ◽  
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Shima Fathi ◽  
Mohammad Taghi Goodarzi ◽  
Shiva Borzouei ◽  
Jalal Poorolajal ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Gestational Diabetes ◽  
Pregnant Women ◽  
Oxidative Stress Markers ◽  
Blood Samples ◽  
Stress Markers ◽  
Total Antioxidant ◽  
Total Oxidative Stress ◽  
And Oxidative Stress

Background: One of the most common complications of pregnant women is gestational diabetes mellitus (GDM). Oxidative stress can play an important role in GDM. Objective: The aim of this study was to evaluate salivary antioxidants and oxidative stress markers in GDM. Method: Twenty pregnant women with GDM and 20 healthy pregnant women with normal blood glucose test participated in this study. Five mL of unstimulated saliva samples were collected. Spectrophotometric assay was carried out for sialochemical analysis. Stata software was used for data analysis. Results: The GDM group exhibited no significant difference in salivary total antioxidant capacity and malondialdehyde compared to the healthy control group. All of antioxidants markers, the uric acid, total antioxidant, peroxidase and catalase, decreased in GDM group that the difference of peroxidase and catalase was statistically significant. All of oxidative stress markers, the salivary malondyaldehid, total oxidative stress and total thiol, increased in GDM group. GDM group exhibited significantly higher salivary total oxidative stress levels. Conclusion: Catalase level was significantly lower and total oxidative stress was significantly higher. These two markers might have significant importance and might exhibit early changes compared to other factors in GDM. . Some of salivary antioxidants might have diagnostic, prognostic or therapeutic implications in GDM. Other studies with large sample size on salivary and blood samples need to be done to confirm this properties and salivary samples using instead of blood samples in GDM biomarkers changes.

Astaxanthin, the Natural Antioxidant, Reduces Reserpine Induced Depression in Mice

2020 ◽  
Vol 16 (9) ◽  
pp. 1319-1327
Author(s):  
Ferdous Khan ◽  
Syed A. Kuddus ◽  
Md. H. Shohag ◽  
Hasan M. Reza ◽  
Murad Hossain
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Reduced Glutathione ◽  
Forced Swim Test ◽  
Tail Suspension Test ◽  
Glutathione Depletion ◽  
Swim Test ◽  
Stress Markers ◽  
Immobility Time ◽  
Biochemical Level

Background: An imbalance between pro-oxidants and antioxidants determines the level of oxidative stress which is implicated in the etiopathogenesis of various neuropsychiatric disorders including depression. Therefore, treatment with antioxidants could potentially improve the balance between pro-oxidants and antioxidants. Objective: The objective of this study was to evaluate the ability of astaxanthin, a potential antioxidant, to reduce reserpine-induced depression in BALB/c mice (Mus musculus). Methods: On the behavioral level, antidepressant property of astaxanthin (50 mg/kg, orally) on reserpine (2 mg/kg, subcutaneously) induced depressed mice was evaluated by Forced Swim Test (FST) and Tail Suspension Test (TST). In the biochemical level, the ability of astaxanthin to mitigate reserpine-induced oxidative stress was evaluated by the measurement of Malondialdehyde (MDA) and nitric oxide (NO) in brain, liver and plasma samples. On the other hand, the efficiency of astaxanthin to replenish glutathione depletion and antioxidant enzyme activity augmentation in the same samples were also investigated. Results: Astaxanthin was able to lower reserpine induced immobility time significantly (p<0.05) in FST and TST. Mice treated with astaxanthin showed significantly (p<0.05) low level of oxidative stress markers such as Malondialdehyde (MDA), Nitric Oxide (NO). Consistently, the level of reduced Glutathione (GSH), and the activity of Superoxide Dismutase (SOD) and catalase were augmented due to the oral administration of astaxanthin. Conclusion: This study suggests that astaxanthin reduces reserpine-induced oxidative stress and therefore might be effective in treating oxidative stress associated depression.

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