Antioxidant and hepatoprotective property of squalene for  counteracting the oxidative damage induced by methotrex- ate in experimental rats

Methotrexate (MTX), an antifolate drug, is extensively prescribed for patients suﬀering from diseases like cancer, psoriasis, neoplasms, and rheumatoid arthritis. Despite its eﬀectiveness, MTX sometimes ﬁnds limited application because its undesirable side eﬀects, including hepatic or renal impairment, bone marrow toxicity and gastrointestinal mucosal injury. Squalene, a highly unsaturated isoprenoid compound, isolated from shark liver oil has great potential in neutralizing the damaging eﬀects triggered by free radicals. Therefore, in this study, the protective role of dietary squalene supplementation on oxidative stress induced by methotrexate in experimental rats was evaluated. A signiﬁcant reduction was displayed in the activities of catalase (CAT) and superoxide dismutase (SOD) in MTX-intoxicated groups compared to other groups. Similarly, the activities of glutathione dependant enzymes (GPx and GST) and reduced glutathione (GSH) in MTX-induced groups were shown to be lower compared to the untreated control. Increased LPO (lipid peroxide) level was found in MTX-intoxicated groups compared to other groups. In addition, alterations in the levels of liver marker enzymes like AST, ALP, ALT, and LDH were noticed in MTX intoxicated groups compared to other groups. Biochemical results were conﬁrmed by the histopathological examination of liver sections. In conclusion, the result obtained in the present study proposes that squalene exerts antioxidant activity and is capable of ameliorating oxidative stress and liver injury induced by MTX.

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Vitamin C attenuates methotrexate-induced oxidative stress in kidney and liver of rats

Physiology International ◽

10.1556/2060.104.2017.2.5 ◽

2017 ◽

Vol 104 (2) ◽

pp. 139-149 ◽

Cited By ~ 2

Author(s):

M Savran ◽

E Cicek ◽

DK Doguc ◽

H Asci ◽

S Yesilot ◽

...

Keyword(s):

Oxidative Stress ◽

Vitamin C ◽

Histopathological Examination ◽

Redox System ◽

Protective Role ◽

Hepatic Tissue ◽

Control Group ◽

Liver And Kidney ◽

Vit C

Like several other anticancer drugs, methotrexate (MTX) causes side effects, such as neuropathic pain, hepatotoxicity, and nephrotoxicity. Abnormal production of reactive oxygen species has been suspected in the pathophysiology of MTX-induced hepatorenal toxicity. Therefore, the aim of this study was to investigate the probable protective role of vitamin C (Vit C) on oxidative stress induced by MTX in the liver and kidney tissues of rats. A total of 32 rats were randomly and equally divided into four groups. The first group served as the control group. The second group received a single dose of 20 mg/kg of MTX intraperitoneally. To demonstrate our hypothesis, the third and the fourth groups received 250 mg/kg of Vit C for 3 days by oral gavage, with or without MTX treatment. At the end of the study, the liver and kidney tissues of the rats were collected and examined using histology. Both the tissues were assayed for malondialdehyde concentration and superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities. In hepatic and renal tissues, lipid peroxidation levels were increased, whereas SOD, CAT, and GSH-Px levels were decreased by MTX. All parameters, including CAT levels in hepatic tissue, were significantly restored after the administration of Vit C for 3 days. Similar to the biochemical findings, evidence of oxidative damage was examined in both types of tissues by histopathological examination. From the results of this study, we were able to observe that Vit C administration modulates the antioxidant redox system and reduces the renal and hepatic oxidative stress induced by MTX. Vit C can ameliorate the toxic effect of MTX in liver and kidney tissues of rat.

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Oxidative Stress in the Muscles of the Fish Nile Tilapia Caused by Zinc Oxide Nanoparticles and Its Modulation by Vitamins C and E

Oxidative Medicine and Cellular Longevity ◽

10.1155/2018/6926712 ◽

2018 ◽

Vol 2018 ◽

pp. 1-9 ◽

Cited By ~ 20

Author(s):

Aaser M. Abdelazim ◽

Islam M. Saadeldin ◽

Ayman Abdel-Aziz Swelum ◽

Mohamed M. Afifi ◽

Ali Alkaladi

Keyword(s):

Oxidative Stress ◽

Zinc Oxide ◽

Zinc Oxide Nanoparticles ◽

Nile Tilapia ◽

Reduced Glutathione ◽

Protective Role ◽

Oxide Nanoparticles ◽

Relative Quantification ◽

Mrna Transcripts

The effects of zinc oxide nanoparticles (ZnONPs) on antioxidants in Nile tilapia muscles and the protective role of vitamins C and E were examined. Two hundred males of Nile tilapia were held in aquaria (10 fishes/aquarium). Fishes were divided into 5 groups: 40 fishes in each group; the first group was the control; the 2nd and 3rd groups were exposed to 1 and 2 mg/L of ZnONPs, respectively; and the 4th and 5th group were exposed to 1 and 2 mg/L of ZnONPs and treated with a (500 mg/kg diet) mixture of vitamin C and E mixture (250 mg/kg diet of each). Muscles were collected on the 7th and 15th day of treatments. Muscle malondialdehyde, reduced glutathione levels, superoxide dismutase (SOD), catalase (CAT), reduced glutathione (GR), glutathione peroxidase (GPx), and glutathione-S-transferase (GST) activities were measured after treatments. Relative quantification of SOD, CAT, GR, GPx, and GST mRNA transcripts was detected in the muscles. Results showed that MDA and GSH concentration; SOD, CAT, GR, GPx, and GST activities; and mRNA expression were significantly decreased in groups exposed to ZnONPs. Vitamins C and E significantly ameliorated the toxic effects of ZnONPs. In conclusion, vitamins C and E have the ability to ameliorate ZnONP oxidative stress toxicity in Nile tilapia.

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ASSESSMENT OF THE POTENTIAL ROLE OF L- METHIONINE ON NICKEL SULFATE INDUCED RENAL INJURY AND OXIDATIVE STRESS IN RAT

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2018.v11i5.24432 ◽

2018 ◽

Vol 11 (5) ◽

pp. 390

Author(s):

Samira Bouhalit ◽

Zine Kechrid

Keyword(s):

Oxidative Stress ◽

Therapeutic Potential ◽

Histopathological Examination ◽

Histological Study ◽

Combined Therapy ◽

Kidney Tissue ◽

Nickel Sulfate ◽

Protective Role ◽

Significant Rise

Objective: The study was designed to investigate the possible protective role of methionine (Met) in nickel sulfate induced oxidative stress in renal tissue.Methods: Rats were divided into the following groups: Healthy control; L-methionine (Met, 100 mg/kg, orally); nickel sulfate (Ni, 20 mg/kg, intraperitoneally); and combination Ni+Met. The experiment lasted 21 days. Antioxidant and renal function parameters with histological study were performed.Results: In the Ni group, marked renal damage was noticed with the significant elevation in the levels of creatinine, urea, and uric acid in serum. Animals also showed a significant rise in the lipid peroxidation level with a concomitant decrease in glutathione (GSH) and various antioxidant enzymes GSH peroxidase, catalase, and superoxide dismutase. Moreover, these changes in rats given the combined therapy nickel plus methionine were significantly less than those of group nickel, met prevented these alterations and maintained the antioxidant status. Histopathological examination of the kidney tissue proved the protective effect of Met against nickel toxicity.Conclusions: These results demonstrated that methionine augments antioxidant defense against nickel-induced toxicity and provides evidence that it has therapeutic potential as a renoprotective agent.

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Protective role of aqueous extract of Phyllanthus amarus on oxidative stress in pancreas of streptozotocin induced diabetic male Wistar rats

Journal of Experimental and Applied Animal Sciences ◽

10.20454/jeaas.2016.1087 ◽

2016 ◽

Vol 2 (1) ◽

pp. 23 ◽

Cited By ~ 2

Author(s):

Sasi Bhusana Rao Bongu ◽

Saisree Sagree ◽

Vijayabharathi Gudapareddy ◽

Malliah Putakala ◽

Sreenivasulu Nukala ◽

...

Keyword(s):

Oxidative Stress ◽

Aqueous Extract ◽

Reduced Glutathione ◽

Protective Role ◽

Pancreatic Tissue ◽

Diabetic Rats ◽

Phyllanthus Amarus ◽

Glutathione S Transferase ◽

Male Wistar Rats

Diabetes mellitus has been associated with oxidative stress. The present study was performed to investigate the pancreas protective activities of Phyllanthus amarus aqueous extract (PAAEt) in streptozotocin (STZ) induced diabetic rats. Oral administration of PAAEt (200mg/kg bw) to diabetic rats for 60 days significantly (p<0.05) decreased antioxidant enzymes such as glutathione peroxidase, glutathione-s-transferase, glutathione reductase, superoxide dismutase, catalase and depletion of reduced glutathione in panceas which illustrates that increased lipid peroxidation (107 %) was restored to control levels. Co-treatment with PAAEt revealed the therapeutic efficacy against oxidative stress in pancreatic tissue. Hence extract of this plant could be used as an adjuvant therapy for the prevention and/or management of diabetes.

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Protective Role of Perillic Acid Against Radiation−Induced Oxidative Stress, Cytokine Profile, DNA Damage, and Intestinal Toxicity in Mice

Journal of Environmental Pathology Toxicology and Oncology ◽

10.1615/jenvironpatholtoxicoloncol.v29.i3.40 ◽

2010 ◽

Vol 29 (3) ◽

pp. 199-212 ◽

Cited By ~ 11

Author(s):

P. Pratheeshkumar ◽

T.J. Raphael ◽

Girija Kuttan

Keyword(s):

Oxidative Stress ◽

Dna Damage ◽

Protective Role ◽

Cytokine Profile ◽

Intestinal Toxicity ◽

Radiation Induced

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Protective Role of Glutathione in the Hippocampus after Brain Ischemia

International Journal of Molecular Sciences ◽

10.3390/ijms22157765 ◽

2021 ◽

Vol 22 (15) ◽

pp. 7765

Author(s):

Youichirou Higashi ◽

Takaaki Aratake ◽

Takahiro Shimizu ◽

Shogo Shimizu ◽

Motoaki Saito

Keyword(s):

Oxidative Stress ◽

Neuronal Death ◽

Excitatory Amino Acid ◽

Ischemia Reperfusion ◽

Thiol Group ◽

Protective Role ◽

Key Factor ◽

Rate Limiting ◽

Cysteine Uptake

Stroke is a major cause of death worldwide, leading to serious disability. Post-ischemic injury, especially in the cerebral ischemia-prone hippocampus, is a serious problem, as it contributes to vascular dementia. Many studies have shown that in the hippocampus, ischemia/reperfusion induces neuronal death through oxidative stress and neuronal zinc (Zn2+) dyshomeostasis. Glutathione (GSH) plays an important role in protecting neurons against oxidative stress as a major intracellular antioxidant. In addition, the thiol group of GSH can function as a principal Zn2+ chelator for the maintenance of Zn2+ homeostasis in neurons. These lines of evidence suggest that neuronal GSH levels could be a key factor in post-stroke neuronal survival. In neurons, excitatory amino acid carrier 1 (EAAC1) is involved in the influx of cysteine, and intracellular cysteine is the rate-limiting substrate for the synthesis of GSH. Recently, several studies have indicated that cysteine uptake through EAAC1 suppresses ischemia-induced neuronal death via the promotion of hippocampal GSH synthesis in ischemic animal models. In this article, we aimed to review and describe the role of GSH in hippocampal neuroprotection after ischemia/reperfusion, focusing on EAAC1.

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Protective role of vitamin D against oxidative stress in diabetic retinopathy

Diabetes/Metabolism Research and Reviews ◽

10.1002/dmrr.3447 ◽

2021 ◽

Author(s):

Maria Stella Valle ◽

Cristina Russo ◽

Lucia Malaguarnera

Keyword(s):

Oxidative Stress ◽

Vitamin D ◽

Diabetic Retinopathy ◽

Protective Role

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Protective Role of Natural and Semi-Synthetic Tocopherols on TNFα-Induced ROS Production and ICAM-1 and Cl-2 Expression in HT29 Intestinal Epithelial Cells

Antioxidants ◽

10.3390/antiox10020160 ◽

2021 ◽

Vol 10 (2) ◽

pp. 160

Author(s):

Vladana Domazetovic ◽

Irene Falsetti ◽

Caterina Viglianisi ◽

Kristian Vasa ◽

Cinzia Aurilia ◽

...

Keyword(s):

Oxidative Stress ◽

Antioxidant Properties ◽

Intestinal Barrier ◽

Protective Role ◽

Intercellular Adhesion Molecule ◽

Intestinal Epithelial ◽

Intercellular Adhesion Molecule 1 ◽

Beneficial Effects ◽

Bowel Diseases

Vitamin E, a fat-soluble compound, possesses both antioxidant and non-antioxidant properties. In this study we evaluated, in intestinal HT29 cells, the role of natural tocopherols, α-Toc and δ-Toc, and two semi-synthetic derivatives, namely bis-δ-Toc sulfide (δ-Toc)2S and bis-δ-Toc disulfide (δ-Toc)2S2, on TNFα-induced oxidative stress, and intercellular adhesion molecule-1 (ICAM-1) and claudin-2 (Cl-2) expression. The role of tocopherols was compared to that of N-acetylcysteine (NAC), an antioxidant precursor of glutathione synthesis. The results show that all tocopherol containing derivatives used, prevented TNFα-induced oxidative stress and the increase of ICAM-1 and Cl-2 expression, and that (δ-Toc)2S and (δ-Toc)2S2 are more effective than δ-Toc and α-Toc. The beneficial effects demonstrated were due to tocopherol antioxidant properties, but suppression of TNFα-induced Cl-2 expression seems not only to be related with antioxidant ability. Indeed, while ICAM-1 expression is strongly related to the intracellular redox state, Cl-2 expression is TNFα-up-regulated by both redox and non-redox dependent mechanisms. Since ICAM-1 and Cl-2 increase intestinal bowel diseases, and cause excessive recruitment of immune cells and alteration of the intestinal barrier, natural and, above all, semi-synthetic tocopherols may have a potential role as a therapeutic support against intestinal chronic inflammation, in which TNFα represents an important proinflammatory mediator.

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Protective role of Sterculia tragacantha aqueous extract on pancreatic gene expression and oxidative stress parameters in streptozotocin-induced diabetic rats

Journal of Complementary and Integrative Medicine ◽

10.1515/jcim-2021-0020 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Basiru Olaitan Ajiboye ◽

Babatunji Emmanuel Oyinloye ◽

Jennifer Chidera Awurum ◽

Sunday Amos Onikanni ◽

Adedotun Adefolalu ◽

...

Keyword(s):

Oxidative Stress ◽

Body Weight ◽

Protective Role ◽

Diabetic Rats ◽

Gene Expressions ◽

Ki 67 ◽

Oxidative Stress Parameters ◽

And Oxidative Stress ◽

Stress Parameters

Abstract Objectives The current study evaluates the protective role of aqueous extract of Sterculia tragacantha leaf (AESTL) on pancreatic gene expressions (insulin, PCNA, PDX-1, KI-67 and GLP-1R) and oxidative stress parameters in streptozotocin-induced diabetic rats. Methods Diabetes mellitus was induced into the experimental Wistar animals via intraperitoneal (IP) injection of streptozotocin (35 mg/kg body weight) and 5% glucose water was given to the rats for 24 h after induction. The animals were categorized into five groups of 10 rats each as follows normal control, diabetic control, diabetic rats administered AESTL (150 and 300 mg/kg body weight) and diabetic rats administered metformin (200 mg/kg) orally for two weeks. Thereafter, the animals were euthanized, blood sample collected, pancreas harvested and some pancreatic gene expressions (such as insulin, PCNA, PDX-1, KI-67, and GLP-1R)s as well as oxidative stress parameters were analyzed. Results The results revealed that AESTL significantly (p<0.05) reduced fasting blood glucose level, food and water intake, and lipid peroxidation in diabetic rats. Diabetic rats administered different doses of AESTL showed a substantial upsurge in body weight, antioxidant enzyme activities, and pancreatic gene expressions (insulin, PCNA, PDX-1, KI-67, and GLP-1R). Conclusions It can therefore be concluded that AESTL has the ability to protect the pancreas during diabetes mellitus conditions.

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