scholarly journals Protective and curative effects of Boerhaavia diff usa L. against fl uoride induced renal oxidative stress and antioxidant enzymes in rats

2017 ◽  
Vol 2 (1) ◽  
pp. 036-041
Author(s):  
A Shashi ◽  
J Kaur
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Enzymes

Assessment of Superoxide Dismutase and Catalase Evolution in Different Stages of an Experimental Endometriosis

2017 ◽  
Vol 68 (6) ◽  
pp. 1381-1383
Author(s):  
Allia Sindilar ◽  
Carmen Lacramioara Zamfir ◽  
Eusebiu Viorel Sindilar ◽  
Alin Constantin Pinzariu ◽  
Eduard Crauciuc ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Reproductive Function ◽  
Female Rats ◽  
Oxygen Species ◽  
Efficient Treatment ◽  
Endometrial Cells ◽  
Gynecological Disorder ◽  
The Impact

Endometriosis is described as a gynecological disorder characterized by the presence of endometrial tissue outside the uterus; extensively explored because of its increasing incidency, with an indubitable diagnostic only after invasive surgery, with no efficient treatment, it has still many aspects to be elucidated. A growing body of facts sustain oxidative stress as a crucial factor between the numerous incriminated factors implicated in endometriosis ethiopathogeny. Reactive oxygen species(ROS) act to decline reproductive function. Our study intends to determine if an experimental model of endometriosis may be useful to assess the impact of oxidative stress on endometrial cells; we have used a murine model of 18 adult Wistar female rats. A fragment from their left uterine horn was implanted in the abdominal wall. After 4 weeks, a laparatomy was performed, 5 endometrial implants were removed, followed by biochemical tissue assay of superoxide dismutase(SOD) and catalase(CAT). At the end of the experiment, the rats were sacrificed, the implants were removed for histopathological exam and biochemical assay of antioxidant enzymes. The results revealed decreased levels of antioxidant enzymes, pointing on significant oxidative stress involvement.

Alteration in the oxidative status of Drosophila melanogaster Meigen (Diptera: Drosophilidae) fed with a diet containing Centaurea depressa M. Bieb. (Asteraceae)

2020 ◽  
Vol 70 (2) ◽  
pp. 227-237
Author(s):  
Eda Güneş
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Total Protein ◽  
Protein Carbonyl ◽  
Control Group ◽  
Carbonyl Content ◽  
Protein Carbonyl Content ◽  
Freeze Dried ◽  
Dried Extract

Abstract The aim of the this study was to evaluate the effects of fresh, dried and freeze-dried Centaurea depressa M. Bieb. (Asteraceae) on the oxidant and antioxidant status of the model organism D. melanogaster Meigen (Diptera: Drosophilidae) experimentally. The study was carried out from 2016 to 2019, and plant leaf extracts (0-50 mg/l) were added to insect standard artificial diets. The total protein, protein carbonyl content and glutathione-S-transferase, superoxide dismutase and catalase activities were quantified at the insect’s third larval stage. Our data showed that protein carbonyl content varied from 2.70 nmol/mg protein in the control group to 59.11 nmol/mg protein in the group fed with fresh leaf extract signifying induction of oxidative stress. All extracts increased the levels of all antioxidant enzymes and decreased the amounts of total protein. Meanwhile, the group fed with the freeze-dried extract showed no significant difference in the levels of total protein and protein carbonyl content except at the 50 mg/l concentration of the extract. Moreover, this group had superoxide dismutase and catalase activities 4 to 5 times higher than in the control group. In conclusion, induction of oxidative stress indicates that the fresh form of C. depressa leaves may have potential as a natural pesticide, whereas induction of endogenous antioxidant enzymes by the freeze-dried extract suggest its potential as an antioxidant.

Exogenous 24-Epibrassinolide stimulates root protection, and leaf antioxidant enzymes in rice plants lead stressed: Central roles to minimize Pb content and oxidative stress

2021 ◽  
pp. 116992
Author(s):  
Flávia Raphaela Carvalho Miranda Guedes ◽  
Camille Ferreira Maia ◽  
Breno Ricardo Serrão da Silva ◽  
Bruno Lemos Batista ◽  
Mohammed Nasser Alyemeni ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Enzymes ◽  
Rice Plants ◽  
Root Protection ◽  
And Oxidative Stress

Immunolocalization of antioxidant enzymes in testis of rams submitted to long-term heat stress

Zygote ◽  
2019 ◽  
Vol 27 (6) ◽  
pp. 432-435
Author(s):  
Thais Rose dos Santos Hamilton ◽  
Gabriela Esteves Duarte ◽  
José Antonio Visintin ◽  
Mayra Elena Ortiz D’Ávila Assumpção
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Heat Stress ◽  
Glutathione Peroxidase ◽  
Cell Types ◽  
Treated Group ◽  
Oxidative Balance ◽  
Testicular Cells

SummaryLong-term heat stress (HS) induced by testicular insulation generates oxidative stress (OS) on the testicular environment; consequently activating antioxidant enzymes such as superoxide dismutase (SOD), glutathione reductase (GR) and glutathione peroxidase (GPx). The aim of this work was to immunolocalize antioxidant enzymes present in different cells within the seminiferous tubule when rams were submitted to HS. Rams were divided into control (n = 6) and treated group (n = 6), comprising rams subjected to testicular insulation for 240 h. After the testicular insulation period, rams were subjected to orchiectomy. Testicular fragments were submitted to immunohistochemistry for staining against SOD, GR and GPx enzymes. We observed immunolocalization of GPx in more cell types of the testis after HS and when compared with other enzymes. In conclusion, GPx is the main antioxidant enzyme identified in testicular cells in an attempt to maintain oxidative balance when HS occurs.

scholarly journals Role of Oxidative Stress in the Pathogenesis of Amyotrophic Lateral Sclerosis: Antioxidant Metalloenzymes and Therapeutic Strategies

Biomolecules ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 437
Author(s):  
Pavlína Hemerková ◽  
Martin Vališ
Keyword(s):  
Oxidative Stress ◽  
Amyotrophic Lateral Sclerosis ◽  
Antioxidant Enzymes ◽  
Oxygen Radicals ◽  
Clinical Symptoms ◽  
Free Oxygen Radicals ◽  
Free Oxygen ◽  
Sporadic Als ◽  
Familial Form ◽  
Lateral Sclerosis

Amyotrophic lateral sclerosis (ALS) affects motor neurons in the cerebral cortex, brainstem and spinal cord and leads to death due to respiratory failure within three to five years. Although the clinical symptoms of this disease were first described in 1869 and it is the most common motor neuron disease and the most common neurodegenerative disease in middle-aged individuals, the exact etiopathogenesis of ALS remains unclear and it remains incurable. However, free oxygen radicals (i.e., molecules containing one or more free electrons) are known to contribute to the pathogenesis of this disease as they very readily bind intracellular structures, leading to functional impairment. Antioxidant enzymes, which are often metalloenzymes, inactivate free oxygen radicals by converting them into a less harmful substance. One of the most important antioxidant enzymes is Cu2+Zn2+ superoxide dismutase (SOD1), which is mutated in 20% of cases of the familial form of ALS (fALS) and up to 7% of sporadic ALS (sALS) cases. In addition, the proper functioning of catalase and glutathione peroxidase (GPx) is essential for antioxidant protection. In this review article, we focus on the mechanisms through which these enzymes are involved in the antioxidant response to oxidative stress and thus the pathogenesis of ALS and their potential as therapeutic targets.

scholarly journals Determination of oxidative stress and activities of antioxidant enzymes in guinea pigs treated with haloperidol

2012 ◽  
Vol 5 (2) ◽  
pp. 479-484 ◽  
Author(s):  
JAROMIR GUMULEC ◽  
MARTINA RAUDENSKA ◽  
MARIAN HLAVNA ◽  
TIBOR STRACINA ◽  
MARKETA SZTALMACHOVA ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Enzymes ◽  
Guinea Pigs

Evaluation of Effect CAT -262C/T, SOD + 35A/C, GPx1 Pro197Leu Polymorphisms in Patients with IBD in the Polish Population

2016 ◽  
Vol 88 (6) ◽  
Author(s):  
Jerzy Mrowicki ◽  
Małgorzata Mrowicka ◽  
Ireneusz Majsterek ◽  
Michał Mik ◽  
Adam Dziki ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ulcerative Colitis ◽  
Inflammatory Bowel Disease ◽  
Antioxidant Enzymes ◽  
Bowel Disease ◽  
Protective Effects ◽  
Polish Population ◽  
Nucleotide Polymorphisms ◽  
Inflammatory Bowel ◽  
Genotype C

AbstractInflammatory bowel disease (IBD) are a heterogeneous group of disorders in the course dominated by chronic, recurrent gastrointestinal inflammation. It is believed that the activation of IBD occurs in patients with a genetic predisposition to their development. Chronic inflammation develops as a result of an excessive reaction of the immune system principally under the influence of environmental risk factors. Among them, it has been shown that the mechanism of oxidative stress is associated with the pathophysiology of inflammatory bowel disease, responsible for the commencement and progress of these diseases.was the relationship between single nucleotide polymorphisms (SNPs) of individual antioxidant enzymes, and the prevalence of inflammatory bowel disease that may be associated with increased levels of oxidative stress.A total of 111 IBD patients, including 65 patients with ulcerative colitis (UC) and 46 with Crohn’s disease (CD) and 125 healthy controls recruited from the Polish population, were genotyped forThe performed analysis of genetic polymorphisms of antioxidant enzymes showed that polymorphic variant of the CAT -262 C / T may have protective effects in patients with ulcerative colitis in the range of genotype C / T; OR = 0.49 (0.25-0.99), p = 0.044. Trend protective, but statistically unrelated, it was also observed for genotype T / T and T allele of the same polymorphism and genotypes and allelesIt has been shown that the polymorphism of antioxidant enzymes

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