Quantification of nonprotein sulfhydryl groups (NPSH) optimized for zebrafish brain tissue v2

2021 ◽  
Author(s):  
Adrieli Sachett ◽  
Matheus Gallas-Lopes ◽  
Greicy M M Conterato ◽  
Radharani Benvenutti not provided ◽  
Ana P Herrmann ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Reduced Glutathione ◽  
Sulfhydryl Groups ◽  
Zebrafish Brain ◽  
Oxidative Stress Defense ◽  
System P ◽  
Neuroscience Research ◽  
Model Animal ◽  
The Central Nervous System ◽  
Indirect Evaluation

Zebrafish are incresingly used as a model animal in neuroscience research. Here we describe a protocol to quantify nonprotein sulfhydryl groups (NPSH), an indirect evaluation of the levels of reduced glutathione (GSH), a major oxidative stress defense in the central nervous system.

scholarly journals Lipidomic approach in young adult triathletes: effect of supplementation with a polyphenols-rich juice on neuroprostane and F2-dihomo-isoprostane markers

2016 ◽  
Vol 7 (10) ◽  
pp. 4343-4355 ◽  
Author(s):  
Libia Alejandra García-Flores ◽  
Sonia Medina ◽  
Camille Oger ◽  
Jean-Marie Galano ◽  
Thierry Durand ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Central Nervous System ◽  
Nervous System ◽  
Young Adult ◽  
Polyphenolic Compounds ◽  
Oxidative Stress Biomarkers ◽  
Stress Biomarkers ◽  
System P ◽  
The Central Nervous System

With adequate training, our juice rich in polyphenolic compounds has been able to influence the excretion values of oxidative stress biomarkers associated with the central nervous system.

Physical exercise protects dynamic balance and motor coordination of rats treated with vincristine

2020 ◽  
Vol 19 (5) ◽  
pp. 336
Author(s):  
Luiza Minato Sagrillo ◽  
Viviane Nogueira De Zorzi ◽  
Luiz Fernando Freire Royes ◽  
Michele Rechia Fighera ◽  
Beatriz Da Silva Rosa Bonadiman ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Locomotor Activity ◽  
Physical Exercise ◽  
Motor Coordination ◽  
Dynamic Balance ◽  
Exercise Group ◽  
Adult Rats ◽  
The Central Nervous System ◽  
Stress Damage ◽  
Training Protocol

Physical exercise has been shown to be an important modulator of the antioxidant system and neuroprotective in several diseases and treatments that affect the central nervous system. In this sense, the present study aimed to evaluate the effect of physical exercise in dynamic balance, motor coordination, exploratory locomotor activity and in the oxidative and immunological balance of rats treated with vincristine (VCR). For that, 40 adult rats were divided into two groups: exercise group (6 weeks of swimming, 1h/day, 5 days/week, with overload of 5% of body weight) and sedentary group. After training, rats were treated with 0.5 mg/kg of vincristine sulfate for two weeks or with the same dose of 0.9% NaCl. The behavioral tests were conducted 1 and 7 days after each dose of VCR. On day 15 we carried out the biochemical analyzes of the cerebellum. The physical exercise was able to protect against the loss of dynamic balance and motor coordination and, had effect per se in the exploratory locomotor activity, and neutralize oxidative stress, damage DNA and immune damage caused by VCR up to 15 days after the end of the training protocol. In conclusion, we observed that previous physical training protects of the damage motor induced by vincristine.Key-words: exercise, oxidative stress, neuroprotection, cerebellum.

ВЛИЯНИЕ ОБЕДНЕННОГО ДЕЙТЕРИЕМ ПИТЬЕВОГО РАЦИОНА НА ФУНКЦИОНАЛЬНОЕ СОСТОЯНИЕ ЦЕНТРАЛЬНОЙ НЕРВНОЙ СИСТЕМЫ ЖИВОТНЫХ В УСЛОВИИ ГИПОКСИИ

2020 ◽  
Vol 65 (6) ◽  
pp. 1196-1202
Author(s):  
С.В. Козин ◽  
◽  
А.А. Кравцов ◽  
Э.И. Злищева ◽  
Л.В. Шурыгина ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Central Nervous System ◽  
Control Level ◽  
Learning Ability ◽  
Hypoxic Exposure ◽  
Amnestic Effect ◽  
Hypoxia With Hypercapnia ◽  
Antiamnestic Effect ◽  
The Central Nervous System ◽  
Deuterium Depleted Water

The effects of prolonged (42 days) addition of deuterium-depleted water into rat’s diet on the functional state of the central nervous system in normal conditions and under conditions of normobaric hypoxia with hypercapnia were studied. It was also established that the use of deuterium-depleted water both in normal conditions and after exposure to oxidative stress contributes to a significant reduction in the emotional anxiety of animals. Prolonged use of deuterium-depleted water before hypoxic exposure (amnestic effect) helps to maintain learning and memory at the control level, i.e. it has a pronounced protective antiamnestic effect. In normal conditions, deuterium-depleted water does not affect the learning ability of animals.

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.

Glial Cells in the Auditory Brainstem

2018 ◽  
pp. 680-706
Author(s):  
Giedre Milinkeviciute ◽  
Karina S. Cramer
Keyword(s):  
Nervous System ◽  
Glial Cells ◽  
Sound Localization ◽  
Auditory Brainstem ◽  
Synaptic Function ◽  
System Function ◽  
Auditory Neurons ◽  
System P ◽  
The Central Nervous System ◽  
Nervous System Function

The auditory brainstem carries out sound localization functions that require an extraordinary degree of precision. While many of the specializations needed for these functions reside in auditory neurons, additional adaptations are made possible by the functions of glial cells. Astrocytes, once thought to have mainly a supporting role in nervous system function, are now known to participate in synaptic function. In the auditory brainstem, they contribute to development of specialized synapses and to mature synaptic function. Oligodendrocytes play critical roles in regulating timing in sound localization circuitry. Microglia enter the central nervous system early in development, and also have important functions in the auditory system’s response to injury. This chapter highlights the unique functions of these non-neuronal cells in the auditory system.

scholarly journals Oxidative Stress in Non-Dialysis-Dependent Chronic Kidney Disease Patients

2021 ◽  
Vol 18 (15) ◽  
pp. 7806
Author(s):  
Patricia Tomás-Simó ◽  
Luis D’Marco ◽  
María Romero-Parra ◽  
Mari Carmen Tormos-Muñoz ◽  
Guillermo Sáez ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Reduced Glutathione ◽  
Genetic Material ◽  
Future Research ◽  
Control Group ◽  
Dialysis Patients ◽  
Early Stages ◽  
Molecular Lines

Background: Cardiovascular complications are the leading cause of morbidity and mortality at any stage of chronic kidney disease (CKD). Moreover, the high rate of cardiovascular mortality observed in these patients is associated with an accelerated atherosclerosis process that likely starts at the early stages of CKD. Thus, traditional and non-traditional or uremic-related factors represent a link between CKD and cardiovascular risk. Among non-conventional risk factors, particular focus has been placed on anaemia, mineral and bone disorders, inflammation, malnutrition and oxidative stress and, in this regard, connections have been reported between oxidative stress and cardiovascular disease in dialysis patients. Methods: We evaluated the oxidation process in different molecular lines (proteins, lipids and genetic material) in 155 non-dialysis patients at different stages of CKD and 45 healthy controls. To assess oxidative stress status, we analyzed oxidized glutathione (GSSG), reduced glutathione (GSH) and the oxidized/reduced glutathione ratio (GSSG/GSH) and other oxidation indicators, including malondialdehyde (MDA) and 8-oxo-2’-deoxyguanosine (8-oxo-dG). Results: An active grade of oxidative stress was found from the early stages of CKD onwards, which affected all of the molecular lines studied. We observed a heightened oxidative state (indicated by a higher level of oxidized molecules together with decreased levels of antioxidant molecules) as kidney function declined. Furthermore, oxidative stress-related alterations were significantly greater in CKD patients than in the control group. Conclusions: CKD patients exhibit significantly higher oxidative stress than healthy individuals, and these alterations intensify as eGFR declines, showing significant differences between CKD stages. Thus, future research is warranted to provide clearer results in this area.

scholarly journals Alpha2-Adrenoblockers Regulate Development of Oxidative Stress and Cognitive Behaviour of Rats under Chronic Acoustic Stress Conditions

2021 ◽  
Vol 14 (6) ◽  
pp. 529
Author(s):  
Magdalina Melkonyan ◽  
Ashkhen Manukyan ◽  
Lilit Hunanyan ◽  
Artem Grigoryan ◽  
Hayk Harutyunyan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Noise Exposure ◽  
Male Rats ◽  
Behavioral Activity ◽  
Induced Stress ◽  
Y Maze ◽  
Cognitive Behaviour ◽  
The Central Nervous System ◽  
High Level ◽  
Environment Noise

Noise is a wide-spread stress factor in modern life produced by urbanization, traffic, and an industrialized environment. Noise stress causes dysfunction and neurotransmission impairment in the central nervous system, as well as changes in hormone levels. In this study, we have examined the level of α-Tocopherol (α-T) and malondialdehyde (MDA) in plasma and the erythrocytes’ membrane (EM), as well as the behavioral characteristics of a noise-induced stress model in rats. In addition, the modulating effect of α2-adrenoblockers, beditin, and mesedin on the aforementioned parameters has been investigated. For these purposes, albino male rats were divided into four groups: (1) untreated; (2) noise-exposed, (3) noise-exposed and beditin-treated (2 mg/kg, i.p.), and (4) noise-exposed and mesedin-treated (10 mg/kg, i.p.) animals. Noise-exposed groups were treated with 91dBA noise on 60 days with a daily duration of 8 h. Increased MDA and decreased α-T levels in plasma and EM were observed upon chronic high-level noise exposure. Locomotor and behavioral activity assessed with a Y-maze revealed disorientation and increased anxiety under chronic noise exposure. Prominently, α2-adrenoblockers alleviated both behavioral deficits and oxidative stress, providing evidence for the involvement of α2-adrenoceptor in the pathophysiology of noise-induced stress.

scholarly journals The Interplay between S-glutathionylation and Phosphorylation of Cardiac Troponin I and Myosin Binding Protein C in End-Stage Human Failing Hearts

Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1134
Author(s):  
Heidi Budde ◽  
Roua Hassoun ◽  
Melina Tangos ◽  
Saltanat Zhazykbayeva ◽  
Melissa Herwig ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Protein C ◽  
Troponin I ◽  
Reduced Glutathione ◽  
Binding Protein ◽  
Enzyme Treatment ◽  
Myosin Binding Protein ◽  
Myosin Binding Protein C ◽  
Myosin Binding ◽  
End Stage

Oxidative stress is defined as an imbalance between the antioxidant defense system and the production of reactive oxygen species (ROS). At low levels, ROS are involved in the regulation of redox signaling for cell protection. However, upon chronical increase in oxidative stress, cell damage occurs, due to protein, DNA and lipid oxidation. Here, we investigated the oxidative modifications of myofilament proteins, and their role in modulating cardiomyocyte function in end-stage human failing hearts. We found altered maximum Ca2+-activated tension and Ca2+ sensitivity of force production of skinned single cardiomyocytes in end-stage human failing hearts compared to non-failing hearts, which was corrected upon treatment with reduced glutathione enzyme. This was accompanied by the increased oxidation of troponin I and myosin binding protein C, and decreased levels of protein kinases A (PKA)- and C (PKC)-mediated phosphorylation of both proteins. The Ca2+ sensitivity and maximal tension correlated strongly with the myofilament oxidation levels, hypo-phosphorylation, and oxidative stress parameters that were measured in all the samples. Furthermore, we detected elevated titin-based myocardial stiffness in HF myocytes, which was reversed by PKA and reduced glutathione enzyme treatment. Finally, many oxidative stress and inflammation parameters were significantly elevated in failing hearts compared to non-failing hearts, and corrected upon treatment with the anti-oxidant GSH enzyme. Here, we provide evidence that the altered mechanical properties of failing human cardiomyocytes are partially due to phosphorylation, S-glutathionylation, and the interplay between the two post-translational modifications, which contribute to the development of heart failure.

A manganese oxide nanozyme prevents the oxidative damage of biomolecules without affecting the endogenous antioxidant system

Nanoscale ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 3855-3863 ◽  
Author(s):  
Namrata Singh ◽  
Mohammed Azharuddin Savanur ◽  
Shubhi Srivastava ◽  
Patrick D'Silva ◽  
Govindasamy Mugesh
Keyword(s):  
Oxidative Stress ◽  
Oxidative Damage ◽  
Manganese Oxide ◽  
Antioxidant System ◽  
Mammalian Cells ◽  
Redox State ◽  
Stress Conditions ◽  
System P ◽  
Endogenous Antioxidant ◽  
Antioxidant Machinery

Multi-enzyme mimetic Mn3O4 nanoflowers (Mp) modulate the redox state of mammalian cells without altering the cellular antioxidant machinery under oxidative stress conditions.

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