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Singh A, Yadawa AK, Rizvi SI. Curcumin protects against aging-related stress and dysfunction through autophagy activation in rat brain. Mol Biol Rep 2024; 51:694. [PMID: 38796662 DOI: 10.1007/s11033-024-09639-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/13/2024] [Indexed: 05/28/2024]
Abstract
BACKGROUND Curcumin (Curcuma longa) is a well-known medicinal plant that induces autophagy in various model species, helping maintain cellular homeostasis. Its role as a caloric restriction mimetic (CRM) is being investigated. This study explores the potential of curcumin (CUR), as a CRM, to provide neuroprotection in D galactose induced accelerated senescence model of rats through modulation of autophagy. For six weeks, male rats received simultaneous supplementation of D-gal (300 mg/kg b.w., subcutaneously) and CUR (200 mg/kg b.w., oral). METHOD AND RESULTS The oxidative stress indices, antioxidants, and electron transport chain complexes in brain tissues were measured using standard methods. Reverse transcriptase-polymerase chain reaction (RT-PCR) gene expression analysis was used to evaluate the expression of autophagy, neuroprotection, and aging marker genes. Our results show that curcumin significantly (p ≤ 0.05) enhanced the level of antioxidants and considerably lowered the level of oxidative stress markers. Supplementing with CUR also increased the activity of electron transport chain complexes in the mitochondria of aged brain tissue, demonstrating the antioxidant potential of CUR at the mitochondrial level. CUR was found to upregulate the expression of the aging marker gene (SIRT-1) and the genes associated with autophagy (Beclin-1 and ULK-1), as well as neuroprotection (NSE) in the brain. The expression of IL-6 and TNF-α was downregulated. CONCLUSION Our findings demonstrate that CUR suppresses oxidative damage brought on by aging by modulating autophagy. These findings imply that curcumin might be beneficial for neuroprotection in aging and age-related disorders.
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Affiliation(s)
- Akanksha Singh
- Department of Biochemistry, University of Allahabad, Allahabad, Uttar Pradesh, 211002, India
| | - Arun Kumar Yadawa
- Department of Biochemistry, University of Allahabad, Allahabad, Uttar Pradesh, 211002, India
| | - Syed Ibrahim Rizvi
- Department of Biochemistry, University of Allahabad, Allahabad, Uttar Pradesh, 211002, India.
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Kumar A, Sharma B. Cardioprotective Effect of Eugenol Against Cd-Induced Inflammation, Oxidative Stress, and Dyslipidemia in Male Rats: An In Vivo and Molecular Docking Study. Biol Trace Elem Res 2024:10.1007/s12011-024-04162-z. [PMID: 38592566 DOI: 10.1007/s12011-024-04162-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024]
Abstract
Cadmium, a highly toxic heavy metal, can cause severe damage to several vital organs including the kidney, liver, and brain. Many of the natural compounds found in aromatic plants have beneficial pharmacological properties. Eugenol is one such compound reported to have anti-inflammatory and antioxidant properties. The aim of this study is to investigate whether eugenol, a natural compound found in aromatic plants known for its anti-inflammatory and antioxidant properties, can mitigate the detrimental effects of cadmium exposure on cardiac inflammation, oxidative stress, and dyslipidemia. Male albino rats were subjected to randomization into four groups, each comprising six animals, to investigate the potential of eugenol in mitigating cadmium-induced toxicity. All groups received oral gavage treatment for 21 days. Following the treatment regimen, cardiac tissue specimens were collected for analysis. The assessment of cardiac antioxidant status entailed the determination of enzymatic activities including catalase, SOD, GST, and GPx. Additionally, levels of lipid peroxidation, reduced glutathione, protein carbonyl oxidation, and thiol levels were quantified in the cardiac tissue samples. To evaluate cardiac damage, marker enzymes such as LDH and CK-MB were measured. Furthermore, the inflammatory response in the cardiac tissue induced by cadmium exposure was assessed through the quantification of NO, TNF-α, and IL-6 levels. Additionally, molecular docking and dynamics studies were conducted utilizing autodock and GLIDE methodologies. Cadmium administration markedly enhanced the activities of LDH and CK-MB, prominent cardiac markers. Furthermore, cadmium treatment also demonstrated a significant decrease in the reduced glutathione levels and antioxidant enzyme activities. Significant elevation of the inflammatory markers was also observed in the cadmium-treated group. Eugenol treatment effectively ameliorates cadmium-induced biochemical changes. This study underscores the potent anti-inflammatory and antioxidant attributes of eugenol. Co-administration of eugenol alongside cadmium exhibited remarkable protective efficacy against cadmium-induced cardio-toxicity. Eugenol demonstrated the capability to reinstate the cellular redox equilibrium of rats subjected to cadmium treatment to levels akin to those of the normal control group.
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Affiliation(s)
- Abhishek Kumar
- Department of Biochemistry, University of Allahabad, Prayagraj, India, 211002
| | - Bechan Sharma
- Department of Biochemistry, University of Allahabad, Prayagraj, India, 211002.
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3
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Figueiredo IAD, Ferreira SRD, Fernandes JM, Silva BA, Vasconcelos LHC, Cavalcante FA. A review of the pathophysiology and the role of ion channels on bronchial asthma. Front Pharmacol 2023; 14:1236550. [PMID: 37841931 PMCID: PMC10568497 DOI: 10.3389/fphar.2023.1236550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 09/08/2023] [Indexed: 10/17/2023] Open
Abstract
Asthma is one of the main non-communicable chronic diseases and affects a huge portion of the population. It is a multifactorial disease, classified into several phenotypes, being the allergic the most frequent. The pathophysiological mechanism of asthma involves a Th2-type immune response, with high concentrations of allergen-specific immunoglobulin E, eosinophilia, hyperreactivity and airway remodeling. These mechanisms are orchestrated by intracellular signaling from effector cells, such as lymphocytes and eosinophils. Ion channels play a fundamental role in maintaining the inflammatory response on asthma. In particular, transient receptor potential (TRP), stock-operated Ca2+ channels (SOCs), Ca2+-activated K+ channels (IKCa and BKCa), calcium-activated chloride channel (TMEM16A), cystic fibrosis transmembrane conductance regulator (CFTR), piezo-type mechanosensitive ion channel component 1 (PIEZO1) and purinergic P2X receptor (P2X). The recognition of the participation of these channels in the pathological process of asthma is important, as they become pharmacological targets for the discovery of new drugs and/or pharmacological tools that effectively help the pharmacotherapeutic follow-up of this disease, as well as the more specific mechanisms involved in worsening asthma.
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Affiliation(s)
- Indyra Alencar Duarte Figueiredo
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
| | - Sarah Rebeca Dantas Ferreira
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
| | - Jayne Muniz Fernandes
- Graduação em Farmácia, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
| | - Bagnólia Araújo da Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
| | - Luiz Henrique César Vasconcelos
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
- Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
| | - Fabiana de Andrade Cavalcante
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
- Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
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Pandya JD, Musyaju S, Modi HR, Cao Y, Flerlage WJ, Huynh L, Kociuba B, Visavadiya NP, Kobeissy F, Wang K, Gilsdorf JS, Scultetus AH, Shear DA. Comprehensive evaluation of mitochondrial redox profile, calcium dynamics, membrane integrity and apoptosis markers in a preclinical model of severe penetrating traumatic brain injury. Free Radic Biol Med 2023; 198:44-58. [PMID: 36758906 DOI: 10.1016/j.freeradbiomed.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/02/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023]
Abstract
Traumatic Brain Injury (TBI) is caused by the external physical assaults damages the brain. It is a heterogeneous disorder that remains a leading cause of death and disability in the military and civilian population of the United States. Preclinical investigations of mitochondrial responses in TBI have ascertained that mitochondrial dysfunction is an acute indicator of cellular damage and plays a pivotal role in long-term injury progression through cellular excitotoxicity. The current study was designed to provide an in-depth evaluation of mitochondrial endpoints with respect to redox and calcium homeostasis, and cell death responses following penetrating TBI (PTBI). To evaluate these pathological cascades, anesthetized adult male rats (N = 6/group) were subjected to either 10% unilateral PTBI or Sham craniectomy. Animals were euthanized at 24 h post-PTBI, and purified mitochondrial fractions were isolated from the brain injury core and perilesional areas. Overall, increased reactive oxygen and nitrogen species (ROS/RNS) production, and elevated oxidative stress markers such as 4-hydroxynonenal (4-HNE), 3-nitrotyrosine (3-NT), and protein carbonyls (PC) were observed in the PTBI group compared to Sham. Mitochondrial antioxidants such as glutathione, peroxiredoxin (PRX-3), thioredoxin (TRX), nicotinamide adenine dinucleotide phosphate (NADPH), superoxide dismutase (SOD), and catalase (CAT) levels were significantly decreased after PTBI. Likewise, PTBI mitochondria displayed significant loss of Ca2+ homeostasis, early opening of mitochondrial permeability transition pore (mPTP), and increased mitochondrial swelling. Both, outer and inner mitochondrial membrane integrity markers, such as voltage-dependent anion channels (VDAC) and cytochrome c (Cyt C) expression were significantly decreased following PTBI. The apoptotic cell death was evidenced by significantly decreased B-cell lymphoma-2 (Bcl-2) and increased glyceraldehyde 3-phosphate dehydrogenase (GAPDH) expression after PTBI. Collectively, current results highlight the comprehensive picture of mitochondria-centric acute pathophysiological responses following PTBI, which may be utilized as novel prognostic indicators of disease progression and theragnostic indicators for evaluating neuroprotection therapeutics following TBI.
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Affiliation(s)
- Jignesh D Pandya
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA.
| | - Sudeep Musyaju
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Hiren R Modi
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Ying Cao
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - William J Flerlage
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Linda Huynh
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Brittany Kociuba
- Veterinary Services Program, Department of Pathology, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Nishant P Visavadiya
- Department of Exercise Science and Health Promotion, Florida Atlantic University, Boca Raton, FL, 33431, USA
| | - Firas Kobeissy
- Program for Neurotrauma, Neuroproteomics and Biomarkers Research, Departments of Emergency Medicine, Psychiatry, Neuroscience and Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Kevin Wang
- Program for Neurotrauma, Neuroproteomics and Biomarkers Research, Departments of Emergency Medicine, Psychiatry, Neuroscience and Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Janice S Gilsdorf
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Anke H Scultetus
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
| | - Deborah A Shear
- Brain Trauma Neuroprotection (BTN) Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, 20910, USA
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5
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Alternate day fasting and time-restricted feeding may confer similar neuroprotective effects during aging in male rats. Biogerontology 2022; 23:757-770. [PMID: 36138254 DOI: 10.1007/s10522-022-09991-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 09/12/2022] [Indexed: 12/13/2022]
Abstract
Age associated neurodegenerative changes are acknowledged to play a causative role in a majority of neurological diseases that accompany aging in organisms. To alleviate the deteriorative effects of aging in the brain, we investigated the effects oftwo types of intermittent fasting (IF) methods: alternate day fasting (ADF) and time- restricted feeding (TRF) in young (3 months) and old (24 months) in male Wistar rats comparing the results with age matched controls. The evaluation of biomarkers of oxidative stress showed significant decline in the old (ADF and TRF) groups in addition to up regulation in antioxidant levels. It was observed that ADF and TRF methods helped reduce ROS accumulation in the mitochondria and increased the activity of the electron transport chain complexes especially C-I and III. Gene expression analysis of autophagy genes like beclin and LC3B showed upregulated expression in ADF and TRF group. Sirtuin1 expression too significantly increased during fasting in both young and old groups showing fasting induced protection from aging. Histological analysis of sections of cerebral cortex and CA1 area provide evidence that fasting protected neurons against degeneration with age. Our results prompt us to conclude that the efficacy of these fasting methods ADF and TRF are reliable anti- aging strategies with respect to dietary restriction interventions. Moreover, both these methods compete closely in conferring protection from oxidative stress and inducing neuroprotective changes in brain of aged rats when compared to their young counterparts.
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Othman ZA, Zakaria Z, Suleiman JB, Mustaffa KMF, Jalil NAC, Wan Ghazali WS, Zulkipli NN, Mohamed M. Orlistat Mitigates Oxidative Stress-Linked Myocardial Damage via NF-κβ- and Caspase-Dependent Activities in Obese Rats. Int J Mol Sci 2022; 23:ijms231810266. [PMID: 36142178 PMCID: PMC9499462 DOI: 10.3390/ijms231810266] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/24/2022] Open
Abstract
Oxidative stress contributes to major complications of obesity. This study intended to identify whether orlistat could mitigate myocardial damage in obese animal models. The tested rats were divided into two groups and fed either with normal chow (n = 6 per group) or with a high-fat diet (HFD) for 6 weeks to induce obesity (n = 12 per group). Obese rats were further subjected to treatment either with distilled water (OB group) or orlistat 10 mg/kg/day (OB + OR group). Key indices of oxidative stress, inflammation, and apoptosis were assessed using an immunohistochemical-based technique and real-time PCR. The OB group showed significant increases of oxidative stress markers (TBARs and PCO), with significant decreases of anti-oxidant markers (Nrf2, SOD, CAT, and GPx). Furthermore, mRNA expression of pro-inflammatory markers (TNF-α and NF-κβ) and pro-apoptosis markers (Bax, Caspase-3, Caspase-8, and Caspase-9) were significantly upregulated in the OB group. Obese rats developed pathological changes of myocardial damages as evidenced by the presence of myocardial hypertrophy and inflammatory cells infiltration. Orlistat dampened the progression of myocardial damage in obese rats by ameliorating the oxidative stress, and by inhibiting NF-κβ pathway and caspase-dependent cell apoptosis. Our study proposed that orlistat could potentially mitigate oxidative stress-linked myocardial damage by mitigating inflammation and apoptosis, thus rationalizing its medical usage.
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Affiliation(s)
- Zaidatul Akmal Othman
- Unit of Physiology, Faculty of Medicine, Universiti Sultan Zainal Abidin, Kuala Terengganu 20400, Terengganu, Malaysia
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Zaida Zakaria
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Joseph Bagi Suleiman
- Department of Science Laboratory Technology, Akanu Ibiam Federal Polytechnic, Unwana P.M.B. 1007, Afikpo, Ebonyi State, Nigeria
| | - Khairul Mohd Fadzli Mustaffa
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Nur Asyilla Che Jalil
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Wan Syaheedah Wan Ghazali
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Ninie Nadia Zulkipli
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
- Unit of Integrative Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
- Correspondence: ; Tel.: +60-9767-6158
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Othman ZA, Zakaria Z, Suleiman JB, Che Jalil NA, Wan Ghazali WS, Mohamed M. Bee bread attenuates the progression of atherosclerosis by activating Nrf2/Keap1 and modulating TNF-α/NF-κβ-associated mast cell migration and a mitochondrial-dependent apoptotic pathway in the obese rat model. Food Funct 2022; 13:8119-8130. [PMID: 35796099 DOI: 10.1039/d2fo00949h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study explores the anti-atherosclerotic effects of bee bread in the context of oxidative stress, inflammation, and apoptosis phenomena in an obesity animal model, and its vitamin composition. Forty male Sprague-Dawley rats were administered with a normal diet (Normal group) and a high-fat diet (HFD) to induce obesity. After 6 weeks, obese rats that received the HFD were treated either with distilled water (Ob group), bee bread at 0.5 g per kg per day (Ob + Bb group), or orlistat at 10 mg per kg per day (Ob + Or group) concomitant with the HFD for another 6 weeks. Bee bread significantly improved atherosclerotic changes by enhancing the immunoexpressions of Nrf2/Keap1, impeding the immunoexpressions of NF-κβ downstream proteins, and intensifying Bcl-2 upregulation, attributed to the improvement in mast cell adherence and collagen deposition in the aortic wall of the Ob + Bb group. We have demonstrated that the treatment with bee bread attenuates the progression of atherosclerosis through its inhibition of vascular oxidative stress, and retardation of inflammatory reaction and apoptosis in obese rats, indicating its potential therapeutic targets for obesity-related vascular diseases. This could be partly attributed to the components of vitamins such as vitamins A, C and E that are present in bee bread, which need further study for the exact molecular mechanism of action.
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Affiliation(s)
- Zaidatul Akmal Othman
- Unit of Physiology, Universiti Sultan Zainal Abidin Fakulti Perubatan, Kuala Terengganu, Terengganu, Malaysia
| | - Zaida Zakaria
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia.
| | - Joseph Bagi Suleiman
- Department of Science Laboratory Technology, Akanu Ibiam Federal Polytechnic Unwana, Akanu ibiam federal polytechnic unwana, afikpo, Ebonyi, Nigeria
| | - Nur Asyilla Che Jalil
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Wan Syaheedah Wan Ghazali
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia.
| | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia.
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Protective and Therapeutic Effects of Orlistat on Metabolic Syndrome and Oxidative Stress in High-Fat Diet-Induced Metabolic Dysfunction-Associated Fatty Liver Disease (MAFLD) in Rats: Role on Nrf2 Activation. Vet Sci 2021; 8:vetsci8110274. [PMID: 34822647 PMCID: PMC8622931 DOI: 10.3390/vetsci8110274] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/27/2021] [Accepted: 11/10/2021] [Indexed: 12/13/2022] Open
Abstract
Metabolic dysfunction-associated fatty liver disease (MAFLD) is an excessive buildup of liver lipids closely associated with various kinds of undesirable metabolic effects and oxidative stress. We aimed to investigate the protective and therapeutic effects of orlistat on metabolic syndrome and oxidative stress parameters in high-fat diet (HFD) induced-MAFLD rats. Twenty-four male Sprague-Dawley rats were randomly divided into four groups (n = 6/group), i.e., Normal control (N), HFD, HFD + orlistat (HFD + O) (10 mg/kg/day administered concomitantly for 12 weeks as a protective model), and obese+orlistat (OB + O) (10 mg/kg/day administered 6 weeks after induction of obesity as a therapeutic model) groups. After 12 weeks, the HFD group had significantly increased Lee obesity index, serum alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, total cholesterol, triglyceride, low-density lipoprotein levels, liver total cholesterol and triglyceride levels, insulin resistance and non-alcoholic steatohepatitis (NASH) together with decreased serum high-density lipoprotein level. Additionally, the HFD group also showed increased Nrf2 translocation to the nucleus with high Keap1 expression and increased liver oxidative stress parameters. Orlistat significantly improved all these alterations in HFD rats. We demonstrated that orlistat might have protective and therapeutic effects against HFD-induced MAFLD rats by its activation on Nrf2 signaling pathway, which subsequently improved metabolic syndrome and oxidative stress parameters.
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Verma AK, Singh S, Rizvi SI. Age-dependent effect of continuous 'artificial light at night' on circadian rhythm in male rats: neuroprotective role of melatonin. Biogerontology 2021; 22:531-545. [PMID: 34468927 DOI: 10.1007/s10522-021-09933-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 08/24/2021] [Indexed: 12/28/2022]
Abstract
Circadian disruption due to artificial light at night (ALAN) is an alarming threat to modern society. In the present study we evaluated the protective effect of melatonin on age dependent redox insults and neurochemical deficits induced by ALAN in the brain of chronodisrupted rat model. Young (3 months) and old (22 months) male Wistar rats were exposed to ALAN along with melatonin supplementation (10 mg Kg-1, oral) for 10 days. Results demonstrated significant increment in the pro-oxidant biomarkers: reactive oxygen species, lipid hydroperoxidation, protein carbonyl, nitric oxide while suppression in the total thiol, ferric reducing antioxidant potential level, superoxide dismutase and catalase activities in the brain of ALAN exposed groups with higher amplitude in aged rats. Further these oxidative modifications were protected by subsequent administration of melatonin. Mitochondrial complexes (C-I to C-IV) activity was significantly altered in young and old ALAN exposed groups with melatonin showing protective effect. Histopathological analysis show dense cytosolic staining and neuronal degeneration in cerebral cortex and different hippocampus regions with greater extent in old ALAN rats effectively moderated by melatonin supplementation. RT-PCR data analysis revealed melatonin effectively downregulated neuroinflammatory (IL-6, TNF α) and neurodegenerative marker (Ngb) while upregulating the aging (Sirt 1) gene expression in both young and old melatonin supplemented ALAN exposed groups. Our results may help in understanding the degree of ALAN induced photo-oxidative damage in neuronal redox homeostasis during aging. We also show that melatonin supplementation might provide a basis for amelioration of oxidative disturbances to improve circadian entrainment in aged populations.
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Affiliation(s)
- Avnish Kumar Verma
- Department of Biochemistry, University of Allahabad, Allahabad, 211002, India
| | - Sandeep Singh
- Department of Biochemistry, University of Allahabad, Allahabad, 211002, India
| | - Syed Ibrahim Rizvi
- Department of Biochemistry, University of Allahabad, Allahabad, 211002, India.
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Verma AK, Singh S, Garg G, Rizvi SI. Melatonin exerts neuroprotection in a chronodisrupted rat model through reduction in oxidative stress and modulation of autophagy. Chronobiol Int 2021; 39:45-56. [PMID: 34384302 DOI: 10.1080/07420528.2021.1966025] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Circadian disruption due to artificial light affects cellular redox homeostasis and may lead to neurodegenerative diseases. The aim of the present study was to investigate the effect of continuous light exposure (CLE) and continuous dark exposure (CDE) along with melatonin supplementation on neuronal redox status, mitochondrial complexes, membrane bound transporters, inflammation, autophagy and neurodegeneration in chronodisrupted model of rat. In the study artificial light of white LED bulb with 500 lux intensity was used. Melatonin (10 mg/kg b.w., orally) was supplemented to control and CLE groups for 10 days. Standard protocols were employed to measure pro-oxidants, non-enzymatic antioxidants, and mitochondrial complexes in brain tissues. Membrane-bound ion transporter activities were evaluated in the crude synaptosomes. Gene expression analysis was performed to assess the expression of inflammatory, autophagy and neuronal marker genes. Histopathological changes in cerebral cortex and different hippocampus regions of the brain were studied. Melatonin exerted a significant normalization of redox status biomarkers in brain tissue. Further melatonin restored the activities of mitochondrial complexes and synaptosomal membrane bound ion transporters. RT-PCR data revealed that melatonin downregulated the expression of inflammatory (TNF-α, IL-6) autophagy (Atg-3, Beclin-1) and neurodegenerative genes (Ngb and NSE) in CLE group. Melatonin also preserved the histology architecture in cerebral cortex and hippocampus. Our results indicate that melatonin exerts a potent neuroprotective effect through reduction of oxidative stress, inflammation and autophagy. Melatonin supplementation might be a promising neurotherapeutic in the treatment neurodegenerative disorders caused by circadian disturbances.
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Affiliation(s)
| | - Sandeep Singh
- Department of Biochemistry, University of Allahabad, Allahabad, India
| | - Geetika Garg
- Department of Biochemistry, University of Allahabad, Allahabad, India
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Kumar A, Siddiqi NJ, Alrashood ST, Khan HA, Dubey A, Sharma B. Protective effect of eugenol on hepatic inflammation and oxidative stress induced by cadmium in male rats. Biomed Pharmacother 2021; 139:111588. [PMID: 33862491 DOI: 10.1016/j.biopha.2021.111588] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cadmium is one of the most toxic heavy metals. The prolonged exposure of it can lead to severe alterations and damage in different tissues including blood, liver, kidney and brain. Eugenol, a phenolic compound, is present in various aromatic plants. It acts as a natural antioxidant and anti-inflammatory agent. The aim of this study was to investigate whether the treatment of eugenol is beneficial against the hepatic oxidative stress and inflammation induced by Cd. METHODS To study the effect of eugenol in reversal of Cd toxicity, 24 albino rats were equally divided into four different groups: G1 Control (saline), G2 Eugenol (3 mg kg-1), G3 CdCl2 (5 mg kg-1) and G4 CdCl2 + Eugenol (5 mg kg-1 + 3 mg kg-1). All the groups were treated with gavage orally for the period of 21 days. After this treatment period, rats were sacrificed and liver tissues were removed. The hepatic antioxidant status was evaluated by measuring the activities of SOD, Catalase and GST enzymes. The reduced glutathione, lipid peroxidation, protein carbonyl oxidation (PCO) and thiol contents were measured in hepatic tissues. The activities of liver marker enzymes such as ALT, AST, GGT, ALP, TP, albumin, Bilirubin content and LDH were determined to assess the hepatic damage in different groups. Cd induced hepatic inflammation was determined by evaluating the levels of TNF-a, IL-6 and NO. RESULTS Oral intoxication of Cd for 21 days significantly elevated the level of hepatic markers including activities of LDH, GGT, ALP, ALT, AST and Bilirubin level. The albumin content, reduced GSH level, and activities of antioxidant enzymes were significantly reduced in Cd treated group. The levels of inflammatory markers were significantly elevated in Cd treated group. The eugenol treatment was very effective and it significantly reversed the Cd induced biochemical alterations almost similar to that of control. CONCLUSION The results demonstrated that the eugenol possessed very strong anti-oxidative and anti-inflammatory potential. The co-treatment of eugenol with Cd exhibited protective potential of eugenol against Cd induced toxicity. Eugenol was able to improve the cellular redox system in rats treated with Cd.
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Affiliation(s)
- Abhishek Kumar
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
| | - Nikhat J Siddiqi
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Sara T Alrashood
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Haseeb A Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Anchal Dubey
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
| | - Bechan Sharma
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India.
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Rajapriya S, Geetha A. Effect of luteolin on the gene level expression of apoptosis-associated speck-like protein containing a caspase recruitment domain of NLRP3 inflammasome and NF-κB in rats subjected to experimental pancreatitis - influence of HSP70. J Basic Clin Physiol Pharmacol 2021; 33:477-486. [PMID: 34167178 DOI: 10.1515/jbcpp-2020-0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 04/14/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Nod-like receptor pyrin domain containing 3 (NLRP3) is one of the well characterized inflammasome that controls the maturation of pro-inflammatory cytokines and thereby the inflammation in pancreas which could be a promising target for anti-inflammatory drugs. The present study is aimed to explore whether luteolin can target the NLRP3 inflammasome and modulate its activity through the signaling protein, HSP70 in the ethanol-cerulein model of experimental pancreatitis. METHODS Male albino Wistar rats were divided into four groups. Groups 1 and 2 rats received normal diet. Groups 3 and 4 rats received isocalorically adjusted diet containing ethanol for 5 weeks and cerulein (20 μg/kg body weight i.p., thrice weekly for the last 3 weeks of the experimental period). Additionally, group 2 and 4 rats received 2 mg/kg body weight of luteolin orally from third week. RESULTS Luteolin co-administration decreased the serum levels of HSP70, oxidative stress markers, myeloperoxidase, GSH/GSSG and GST with concomitant downregulation in the mRNA expression of HSP70, caspase-1, ASC-NLRP3 and NF-κB. Spearman's rank correlation test showed that serum HSP70 has positive correlation with the expression of ASC-NLRP3, caspase-1, NF-κB and 4-hydroxynonenal and negative correlation with GSH:GSSG ratio. CONCLUSIONS The modulating effect of luteolin on the expression of HSP70, NF-κB and thereby on ASC-NLRP3 complex may be claimed for its pancreato-protective activity.
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Affiliation(s)
- Sadanandan Rajapriya
- Department of Biochemistry, Bharathi Women's College, Affiliated to University of Madras, Chennai, Tamil Nadu, India
| | - Arumugam Geetha
- Dr. Ambedkar Government Arts College, Chennai, Tamil Nadu, India
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13
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Rahmani S, Ansarihadipour H, Bayatiani MR, Khosrowbeygi A, Babaei S, Rasmi Y. Conformational changes of β-thalassemia major hemoglobin and oxidative status of plasma after in vitro exposure to extremely low-frequency electromagnetic fields: An artificial neural network analysis. Electromagn Biol Med 2020; 40:117-130. [PMID: 33092422 DOI: 10.1080/15368378.2020.1830289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Electromagnetic fields (EMF) can generate reactive oxygen species and induce oxidative modifications. We investigated the effects of extremely low-frequency electromagnetic fields (ELF-EMF) on oxidative status of plasma and erythrocytes in β-thalassemia major patients and design artificial neural networks (ANN) for evaluating the oxyHb concentration. Blood samples were obtained from age and sex-matched healthy donors (n = 12) and major β-thalassemia patients (n = 12) and subjected to 0.5 and 1 mT and 50 Hz of EMF. Plasma oxidative status was estimated after 1 and 2 h exposure to ELE-EMF. Structural changes of plasma proteins were investigated by Native PAGE and SDS-PAGE. Moreover; multilayer perceptron (MLP) method was applied for designing a feed forward ANN model to predict the impact of these oxidative and antioxidative parameters on oxyHb concentration. Two hour exposure to ELF-EMF induced significant oxidative changes on major β-thalassemia samplesElectrophoretic profiles showed two high molecular weight (HMW) protein aggregates in plasma samples from healthy donors and major β-thalassemia patients. According to our ANN design, the main predictors of oxyHb concentration were optical density of Hb at 542, 340, 569, 630, 577, and 420 nm and metHb and hemichrome (HC) concentration. Accuracy of the proposed ANN model was shown by predicted by observed chart (y = 1.3 + 0.96x, R2 = 0.942), sum of squares errors (SSR), and relative errors (RE). Our results showed the detailed effects of ELF-EMF on Hb structure and oxidative balance of plasma in major β-thalassemia patients and significance of ANN analysis during normal and pathologic conditions.
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Affiliation(s)
- Saeideh Rahmani
- Department of Biochemistry and Genetics, School of Medicine, Arak University of Medical Sciences , Arak, Iran
| | - Hadi Ansarihadipour
- Department of Biochemistry and Genetics, School of Medicine, Arak University of Medical Sciences , Arak, Iran
| | - Mohamad Reza Bayatiani
- Department of Medical Physics and Radiotherapy, Arak University of Medical Sciences and Khansari Hospital , Arak, Iran
| | - Ali Khosrowbeygi
- Department of Biochemistry and Genetics, School of Medicine, Arak University of Medical Sciences , Arak, Iran
| | - Saeid Babaei
- Department of Anatomical Sciences, School of Medicine, Arak University of Medical Sciences , Arak, Iran
| | - Yousef Rasmi
- Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences , Urmia, Iran
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Spermidine, a caloric restriction mimetic, provides neuroprotection against normal and D-galactose-induced oxidative stress and apoptosis through activation of autophagy in male rats during aging. Biogerontology 2020; 22:35-47. [PMID: 32979155 DOI: 10.1007/s10522-020-09900-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/18/2020] [Indexed: 12/12/2022]
Abstract
Spermidine (SPD) is a natural polyamine present in all living organisms and is involved in the maintenance of cellular homeostasis by inducing autophagy in different model organisms. Its role as a caloric restriction mimetic (CRM) is still being investigated. We have undertaken this study to investigate whether SPD, acting as a CRM, can confer neuroprotection in D-galactose induced accelerated senescence model rat and naturally aged rats through modulation of autophagy and inflammation. Young male rats (4 months), D-gal induced (500 mg/kg b.w., subcutaneously) aging and naturally aged (22 months) male rats were supplemented with SPD (10 mg/kg b.w., orally) for 6 weeks. Standard protocols were employed to measure prooxidants, antioxidants, apoptotic cell death and electron transport chain complexes in brain tissues. Gene expression analysis with reverse transcriptase-polymerase chain reaction (RT-PCR) was performed to assess the expression of autophagy and inflammatory marker genes. Our data demonstrate that SPD significantly (p ≤ 0.05) decreased the level of pro-oxidants and increased the level of antioxidants. SPD supplementation also augmented the activities of electron transport chain complexes in aged brain mitochondria thus proving its antioxidant potential at the level of mitochondria. RT-PCR data revealed that SPD up-regulated the expression of autophagy genes (ATG-3, Beclin-1, ULK-1 and LC3B) and down-regulated the expression of the inflammatory gene (IL-6) in aging brain. Our results provide first line of evidence that SPD provides neuroprotection against aging-induced oxidative stress by regulating autophagy, antioxidants level and also reduces neuroinflammation. These results suggest that SPD may be beneficial for neuroprotection during aging and age-related disorders.
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Koohpeyma H, Goudarzi I, Elahdadi Salmani M, Lashkarbolouki T, Shabani M. Folic Acid Protects Rat Cerebellum Against Oxidative Damage Caused by Homocysteine: the Expression of Bcl-2, Bax, and Caspase-3 Apoptotic Genes. Neurotox Res 2019; 37:564-577. [PMID: 31721048 DOI: 10.1007/s12640-019-00119-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/03/2019] [Accepted: 09/25/2019] [Indexed: 01/23/2023]
Abstract
There is evidence that oxidative stress involves in homocysteine-induced pathogenesis. Considering the antioxidative properties of folic acid and its involvement as a cofactor for methionine synthase (MS) in the homocysteine-methionine cycle, the aim of this study was to evaluate the mechanism associated with homocysteine-induced toxicity and its prevention with folic acid supplementation. Male rat pups were divided into four groups including control, homocysteine (Hcy), Hcy + folic acid and folic acid groups. The Hcy group received Hcy 0.3-0.6 μmol/g body weight, while Hcy + folic acid group received folic acid orally as 0.011 μmol/g body weight along with Hcy on a postnatal day (PD) 4 until 25. The reduced and oxidized glutathione (GSH and GSSG) levels, GSH/GSSG ratio, protein carbonyl content, cystathionine β synthase (CBS), and MS activities in the cerebellum were measured 25 days after birth. Levels of malondialdehyde (MDA), marker of lipid peroxidation were measured. Also, Bcl2, Bax, and caspase-3 expression levels were measured by real-time quantitative PCR. Furthermore, caspase-3 protein level assay was performed by the ELISA test. Results indicated that Hcy administration could promote both lipid and protein oxidation, which was associated with increased amounts of caspase-3 mRNA and protein levels and Bax mRNA expression level in this group. Cerebellar MS, CBS enzyme activity, GSH, GSSG, and GSH/GSH ratio did not change following Hcy administration. Folic acid significantly reduced MDA level, protein carbonyl content, Bax, the caspase-3 mRNA, and protein expression levels in the cerebellum of Hcy-treated group. Moreover, cerebellar MS, CBS enzyme activity, GSH, and GSH/GSH ratio increased following folic acid treatment. We conclude that Hcy might cause apoptosis in the cerebellum. We suggest that folic acid, in addition of having antioxidant properties, can protect cerebellum against homocysteine-mediated neurotoxicity via modulating the expression of proteins that are contributed in regulation of apoptosis in the rat's cerebellum.
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Affiliation(s)
| | - Iran Goudarzi
- School of Biology, Damghan University, Damghan, 3671641167, Iran.
| | | | | | - Mohammad Shabani
- Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran
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16
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Bayarsaikhan G, Avan AN, Çekiç SD, Apak R. Use of modified CUPRAC and dinitrophenylhydrazine colorimetric methods for simultaneous measurement of oxidative protein damage and antioxidant defense against oxidation. Talanta 2019; 204:613-625. [PMID: 31357343 DOI: 10.1016/j.talanta.2019.06.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 01/01/2023]
Abstract
A modified CUPRAC (cupric reducing antioxidant capacity) method was developed for the simultaneous estimation of protein oxidation and counteracting antioxidant defense, and the results were compared with those of a modified 2,4-dinitrophenylhydrazine (DNPH) carbonyl assay. The alkaline carbonyl method was cleared off interferences by solvent extraction using a cationic surfactant. Both solution and Nafion membrane sensor CUPRAC methods were used to measure the oxidative hazard in protein solutions. Bovine serum albumin, fetal bovine serum and egg white were used as protein probes, exposed to oxidation by Fe(II)-induced Fenton reaction in the absence and presence of selected antioxidants (ascorbic acid, cysteine, gallic acid, glutathione, and N-acetyl cysteine). Protein probes were initially unreactive toward the CUPRAC and DNPH reagents, but produced colored products upon Fenton oxidation which were bleached by antioxidants, enabling an indirect measurement of antioxidant activity (AOA) by difference. Spearman's rank test for antioxidants demonstrated that there was a strong correlation (+0.7 to +0.9) between the modified CUPRAC and carbonyl assays. There was also a strong correlation between the results of the solution phase and optical sensing CUPRAC methods (R2 > 0.95). As opposed to conventional antioxidant assays not using biologically relevant probes, this work utilizes protein probes for AOA assessment.
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Affiliation(s)
- Govigerel Bayarsaikhan
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Istanbul, Turkey
| | - Aslı Neslihan Avan
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Istanbul, Turkey
| | - Sema Demirci Çekiç
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Istanbul, Turkey
| | - Reşat Apak
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, 34320, Istanbul, Turkey; Turkish Academy of Sciences (TUBA) Piyade St. No. 27, 06690, Çankaya Ankara, Turkey.
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17
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Protective effects of phytochemicals of Capparis spinosa seeds with cisplatin and CCl4 toxicity in mice. FOOD BIOSCI 2019. [DOI: 10.1016/j.fbio.2019.01.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Singh AK, Singh S, Tripathi VK, Bissoyi A, Garg G, Rizvi SI. Rapamycin Confers Neuroprotection Against Aging-Induced Oxidative Stress, Mitochondrial Dysfunction, and Neurodegeneration in Old Rats Through Activation of Autophagy. Rejuvenation Res 2019; 22:60-70. [DOI: 10.1089/rej.2018.2070] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Abhishek Kumar Singh
- Department of Biochemistry, University of Allahabad, Allahabad, , India
- Amity Institute of Neuropsychology and Neurosciences, Amity University Uttar Pradesh, Noida, , India
| | - Sandeep Singh
- Department of Biochemistry, University of Allahabad, Allahabad, , India
| | - Vinay Kumar Tripathi
- Department of Animal Science and Biotechnology, Chonbuk National University, Jeonju, Republic of Korea
| | - Akalabya Bissoyi
- Department of Biomedical Engineering, National Institute of Technology, Raipur, , India
| | - Geetika Garg
- Department of Biochemistry, University of Allahabad, Allahabad, , India
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Seif F, Reza Bayatiani M, Ansarihadipour H, Habibi G, Sadelaji S. Protective properties of Myrtus communis extract against oxidative effects of extremely low-frequency magnetic fields on rat plasma and hemoglobin. Int J Radiat Biol 2019; 95:215-224. [PMID: 30496018 DOI: 10.1080/09553002.2019.1542182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE This study investigates the protective properties of Myrtus communis extract against the oxidative effects of extremely low-frequency magnetic fields (ELFMF). Also, this study is aimed to analyze the conformational changes of hemoglobin, oxidative damages to plasma proteins and antioxidant power of plasma following exposure to ELFMF. MATERIALS AND METHODS Adult male rats were divided into 3 groups: (1) control, (2) ELFMF exposure, and (3) ELFMF exposure after M. communis extract administration. The magnetic field (0.7 mT, 50 Hz) was produced by a Helmholtz coil for one month, 2 hours a day. The M. communis extract was injected intraperitoneally at a dose of 0.5 mg/kg before exposure to ELFMF. The oxidative effects of ELFMF were studied by evaluating the hemoglobin, methemoglobin (metHb) and hemichrome levels, absorption spectrum of hemoglobin (200-700 nm), oxidative damage to plasma proteins by measuring protein carbonyl (PCO) levels and plasma antioxidant power according to the ferric reducing ability of plasma (FRAP). The mean and standard errors of the mean were determined for each group. One-way ANOVA analysis was used to compare the means of groups. The significance level was considered to be p < .05. Moreover, artificial neural network (ANN) analysis was used to identify the predictive parameters for estimating the oxyhemoglobin (oxyHb) concentration. RESULTS Exposure to ELFMF decreased the FRAP which was in concomitant with a significant increase in plasma PCO, metHb and hemichrome concentrations (p < .001). Oxidative modifications of Hb were shown by reduction in optical density at 340 nm (globin-heme interaction) and 420 nm (heme-heme interaction). Administration of M. communis extract increased FRAP values and decreased plasma POC, metHb, and hemichrome concentrations. Also, a significant increase in Hb absorbance at 340, 420, 542, and 577 nm showed the protective properties of M. communis extract against ELFMF-induced oxidative stress in erythrocytes. ANN analysis showed that optical absorption of hemoglobin at 520, 577, 542, and 630 nm and concentration of metHb and hemichrome were the most important parameters in predicting the oxyHb concentration. CONCLUSIONS Myrtus communis extract enhances the ability of erythrocytes and plasma to deal with oxidative conditions during exposure to ELFMF. Also, ANN analysis can predict the most important parameters in relation to Hb structure during oxidative stress.
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Affiliation(s)
- Fatemeh Seif
- a Department of Medical Physics and Radiotherapy , Arak University of Medical Sciences and Khansari Hospital , Arak , Iran
| | - Mohamad Reza Bayatiani
- a Department of Medical Physics and Radiotherapy , Arak University of Medical Sciences and Khansari Hospital , Arak , Iran
| | - Hadi Ansarihadipour
- b Department of Biochemistry and Genetics , Arak University of Medical Sciences , Arak , Iran
| | - Ghasem Habibi
- c Arak University of Medical Sciences, Infectious Diseases Research Center , Arak , Iran
| | - Samira Sadelaji
- c Arak University of Medical Sciences, Infectious Diseases Research Center , Arak , Iran
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Tlili N, Tir M, Feriani A, Yahia Y, Allagui MS, Saadaoui E, El Cafsi M, Nasri N. Potential health advantages of Periploca laevigata: Preliminary phytochemical analysis and evaluation of in vitro antioxidant capacity and assessment of hepatoprotective, anti-inflammatory and analgesic effects. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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21
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Garg G, Singh S, Singh AK, Rizvi SI. N-acetyl-l-cysteine attenuates oxidative damage and neurodegeneration in rat brain during aging. Can J Physiol Pharmacol 2018; 96:1189-1196. [PMID: 30107137 DOI: 10.1139/cjpp-2018-0209] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
N-acetyl-l-cysteine (NAC) is a precursor of cysteine, which is known to increase the level of glutathione (GSH) in the brain. Several neurodegenerative changes linked to oxidative stress take place in the aging brain. This study aimed to assess the neuroprotective effect of NAC supplementation on age-dependent neurodegeneration in the rat brain. Young (4 months) and old (24 months) Wistar rats (n = 6 rats/group) were supplemented with NAC (100 mg/kg b.w. orally) for 14 days. Enzymatic and nonenzymatic antioxidants such as superoxide dismutase and catalase, and GSH and total thiol respectively, prooxidants such as protein carbonyl, advanced oxidation protein products, reactive oxygen species, and malondialdehyde were assessed in the brain homogenates. Furthermore, nitric oxide level, acetylcholinesterase activity, and Na+/K+-ATPase activity were measured and gene expression studies were also performed. The results indicated that NAC augmented the level of enzymatic and nonenzymatic antioxidants with a significant reduction in prooxidant levels in old rats. NAC supplementation also downregulated the expression of inflammatory markers (TNF-α, IL-1β, IL-6) and upregulated the expression of marker genes associated with aging (sirtuin-1) and neurodegeneration (neuron-specific enolase, neuroglobin, synapsin-I, myelin basic protein 2) in old rats. The present findings support a neuroprotective role of NAC which has therapeutic implication in controlling age-related neurological disorders.
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Affiliation(s)
- Geetika Garg
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India.,Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Sandeep Singh
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India.,Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Abhishek Kumar Singh
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India.,Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Syed Ibrahim Rizvi
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India.,Department of Biochemistry, University of Allahabad, Allahabad-211002, India
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Hassan SK, El-Sammad NM, Abdel-Hali AH, Mousa AM, Khalil WKB, Anwar N. Flavonoids-rich Extract of Beta vulgaris Subsp. cicla L. var. Flavescens Leaf, a Promising Protector Against Gentamicin- induced Nephrotoxicity and Hepatotoxicity in Rats. INT J PHARMACOL 2018. [DOI: 10.3923/ijp.2018.652.666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Garg G, Singh S, Singh AK, Rizvi SI. Whey protein concentrate supplementation protects rat brain against aging-induced oxidative stress and neurodegeneration. Appl Physiol Nutr Metab 2018; 43:437-444. [DOI: 10.1139/apnm-2017-0578] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Whey protein concentrate (WPC) is a rich source of sulfur-containing amino acids and is consumed as a functional food, incorporating a wide range of nutritional attributes. The purpose of this study is to evaluate the neuroprotective effect of WPC on rat brain during aging. Young (4 months) and old (24 months) male Wistar rats were supplemented with WPC (300 mg/kg body weight) for 28 days. Biomarkers of oxidative stress and antioxidant capacity in terms of ferric reducing antioxidant potential (FRAP), lipid hydroperoxide (LHP), total thiol (T-SH), protein carbonyl (PC), reactive oxygen species (ROS), nitric oxide (NO), and acetylcholinesterase (AChE) activity were measured in brain of control and experimental (WPC supplemented) groups. In addition, gene expression and histopathological studies were also performed. The results indicate that WPC augmented the level of FRAP, T-SH, and AChE in old rats as compared with the old control. Furthermore, WPC-treated groups exhibited significant reduction in LHP, PC, ROS, and NO levels in aged rats. WPC supplementation also downregulated the expression of inflammatory markers (tumor necrosis factor alpha, interleukin (IL)-1β, IL-6), and upregulated the expression of marker genes associated with autophagy (Atg3, Beclin-1, LC3B) and neurodegeneration (neuron specific enolase, Synapsin-I, MBP-2). The findings suggested WPC to be a potential functional nutritional food supplement that prevents the progression of age-related oxidative damage in Wistar rats.
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Affiliation(s)
- Geetika Garg
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Sandeep Singh
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Abhishek Kumar Singh
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
| | - Syed Ibrahim Rizvi
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
- Department of Biochemistry, University of Allahabad, Allahabad-211002, India
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Arif Z, Neelofar K, Arfat MY, Zaman A, Tarannum A, Parveen I, Ahmad S, Khan MA, Badar A, Islam SN. Hyperglycemia induced reactive species trigger structural changes in human serum albumin of type 1 diabetic subjects. Int J Biol Macromol 2018; 107:2141-2149. [DOI: 10.1016/j.ijbiomac.2017.10.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/12/2017] [Accepted: 10/14/2017] [Indexed: 01/01/2023]
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Fisetin as a caloric restriction mimetic protects rat brain against aging induced oxidative stress, apoptosis and neurodegeneration. Life Sci 2018; 193:171-179. [DOI: 10.1016/j.lfs.2017.11.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/30/2017] [Accepted: 11/06/2017] [Indexed: 01/09/2023]
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Does Eryngium maritimum seeds extract protect against CCl4 and cisplatin induced toxicity in rats: Preliminary phytochemical screening and assessment of its in vitro and in vivo antioxidant activity and antifibrotic effect. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.07.054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Antiaging Effect of Metformin on Brain in Naturally Aged and Accelerated Senescence Model of Rat. Rejuvenation Res 2017; 20:173-182. [DOI: 10.1089/rej.2016.1883] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Cohen S, Mehrabi S, Yao X, Millingen S, Aikhionbare FO. Reactive Oxygen Species and Serous Epithelial Ovarian Adenocarcinoma. ACTA ACUST UNITED AC 2017; 4:106-114. [PMID: 28503633 DOI: 10.11648/j.crj.20160406.13] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Serous ovarian cancer (SOC) is usually diagnosed at late stage and stage-adjusted five year survival rate is low. Mortality is relatively heavy on African-Americans/Black (AA) affected with SOC compared to their Caucasian counterparts, though the cause for the disparity remains unclear. DNA damage induced by oxidative stress has been linked to ovarian cancer, but the role of oxidative stress in distinguishing differences in aggressive SOC tumors among patients is yet to be determined. This study aims to determine the levels of reactive oxygen species (ROS), malondialdehyde (MDA), reactive carbonyl groups and antioxidants in primary SOC normal, precancerous (cystadenoma, borderline) and invasive (III/IV) tissue samples obtained from AA and Caucasian subgroups. Additionally, the study seeks to investigate significant changes in the level of ROS between AA and Caucasian SOC samples. A fluorogenic probe, dichlorodihydrofluorescein (DCFH-DiOxyQ), was used to scavenge reactive oxygen species in SOC normal, precancerous and malignant stages III/IV tissue samples. Malondialdehyde (MDA), a lipid peroxidation marker, and reactive carbonyl groups were measured as indicators of oxidative injury. Moreover, antioxidant status was assessed by estimating glutathione peroxidase 3 (GPX3) enzyme levels. Results indicate ROS concentration was approximately 96% higher in the malignant tissues in comparative to the normal non-diseased controls. In addition, ROS concentration among AA women was approximately 9% higher than Caucasian women. MDA levels increased exponentially from non-disease control and precancerous tissues relative to malignant tissues. Furthermore, malignant serous ovarian samples showed significantly higher reactive carbonyl content compared to the non-disease controls (p=0.009), while GPX3 levels decreased considerably in serous cystadenoma and malignant tissue samples, and non-diseased control compared to borderline disease. The results suggest accumulation of ROS and MDA levels may be a causative factor for SOC. Elevated levels of MDA and reactive carbonyl proteins could override the GPX3 enzyme capacity therefore, initiating serous ovarian neoplasm.
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Affiliation(s)
- Shakeria Cohen
- Department of Internal Medicine, Morehouse School of Medicine, Atlanta, USA
| | - Sharifeh Mehrabi
- Department of Internal Medicine, Morehouse School of Medicine, Atlanta, USA
| | - Xuebiao Yao
- Department of Physiology, Morehouse School of Medicine, Atlanta, USA
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Wallace L, Mehrabi S, Bacanamwo M, Yao X, Aikhionbare FO. Expression of mitochondrial genes MT-ND1, MT-ND6, MT-CYB, MT-COI, MT-ATP6, and 12S/MT-RNR1 in colorectal adenopolyps. Tumour Biol 2016; 37:12465-12475. [PMID: 27333991 PMCID: PMC5661973 DOI: 10.1007/s13277-016-5101-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 06/09/2016] [Indexed: 01/05/2023] Open
Abstract
Despite improvements in treatment strategies, colorectal cancer (CRC) still has high mortality rates. Most CRCs develop from adenopolyps via the adenoma-carcinoma sequence. A mechanism for inhibition of this sequence in individuals with a high risk of developing CRC is urgently needed. Differential studies of mitochondrial (mt) gene expressions in the progressive stages of CRC with villous architecture are warranted to reveal early risk assessments and new targets for chemoprevention of the disease. In the present study, reverse transcription-quantitative PCR (RT-qPCR) was used to determine the relative amount of the transcripts of six mt genes [MT-RNR1, MT-ND1, MT-COI, MT-ATP6, MT-ND6, and MT-CYB (region 648-15887)] which are involved in the normal metabolism of mitochondria. A total of 42 pairs of tissue samples obtained from colorectal adenopolyps, adenocarcinomas, and their corresponding adjacent normal tissues were examined. Additionally, electron transport chain (ETC), complexes I (NADH: ubiquinone oxidoreductase) and III (CoQH2-cytochrome C reductase), and carbonyl protein group contents were analyzed. Results indicate that there were differential expressions of the six mt genes and elevated carbonyl protein contents among the colorectal adenopolyps compared to their paired adjacent normal tissues (p < 0.05). The levels of complexes I and III were higher in tumor tissues relative to adjacent normal tissues. Noticeably, the expression of MT-COI was overexpressed in late colorectal carcinomas among all studied transcripts. Our data suggest that increased expressions in certain mt genes and elevated levels of ROS may potentially play a critical role in the colorectal tumors evolving from adenopolyps to malignant lesions.
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Affiliation(s)
- LaShanale Wallace
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Sharifeh Mehrabi
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Methode Bacanamwo
- Department of Physiology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Xuebiao Yao
- Department of Physiology, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
| | - Felix O. Aikhionbare
- Department of Medicine, Morehouse School of Medicine, 720 Westview Dr. SW, Atlanta, GA 30310, USA
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Ansarihadipour H, Bayatiani M. Influence of Electromagnetic Fields on Lead Toxicity: A Study of Conformational Changes in Human Blood Proteins. IRANIAN RED CRESCENT MEDICAL JOURNAL 2016; 18:e28050. [PMID: 27651951 PMCID: PMC5022290 DOI: 10.5812/ircmj.28050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 04/04/2015] [Accepted: 04/13/2015] [Indexed: 11/23/2022]
Abstract
Background Electromagnetic fields (EMF) are associated with oxidative stress, which is in turn associated with reactive oxygen species (ROS), anemia, and hypoxia. Objectives This study focused on the synergistic effects of lead ions and EMF on oxidative modifications in hemoglobin (Hb) and plasma proteins. Patients and Methods In this experimental study, the blood samples were obtained from age- and sex-matched healthy subjects at Arak University of Medical Sciences, Arak, Iran. The collected bloods were prepared as 55 samples and then divided into different groups for incubating with 0 to 100 uM of lead ions in 2 mT and 50 Hz of EMF for 120 minutes. The carbonyl group was determined to be an oxidative biomarker in plasma proteins. The ferric reducing ability of plasma (FRAP) was considered to be an antioxidant power of human plasma. The conformational changes in hemoglobin, met-Hb, and hemichrome were considered to be oxidative markers in red blood cells. To predict the factors affecting the oxyHb, the artificial neural network (MLP: 11,2,2,1) in SPSS software was applied. Results The test subjects showed increased concentrations of metHb (1.8 ± 0.19 vs. 1.36 ± 0.25) and hemichrome (6.01 ± 0.57) in relation to the control subjects. The decreased absorbance at 340 nm (0.88 ± 0.09 vs. 1.07 ± 0.08) demonstrated the reduced interaction between the globin chain and the heme ring. The decreased absorbance at 420 nm (Soret band) (2.96 ± 0.13) and the increased absorbance at 630 nm (0.07 ± 0.002 vs. 0.064 ± 0.005) indicated the conversion of oxyHb to metHb, which confirmed the oxidative damage to the erythrocytes. The linear regression analysis showed significant positive correlations between lead concentration and the percentage of plasma carbonyl content (R2 = 0.96), the relation of plasma carbonyl content to Hb absorbance at 630 nm (R2 = 0.97), and the relation of plasma carbonyl content to metHb concentration (R2 = 0.95) after 120 minutes incubation with lead ions in 20 millitesla and 50 hertz EMF. The artificial neural network analysis showed the significant importance of hemichrome, PCO, metHb, and lead concentration to the oxyHb content of erythrocytes. Conclusions Lead contamination in the presence of an EMF exacerbates the oxidative damage to plasma proteins as well as the conformational changes in Hb. An artificial neural network can be used as a predictive tool for the oxidative danger posed to workers in industrial fields, battery manufacturing companies, and power plants.
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Affiliation(s)
- Hadi Ansarihadipour
- Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, IR Iran
- Corresponding Author: Hadi Ansarihadipour, Molecular and Medicine Research Center, Arak University of Medical Sciences, Arak, IR Iran. Tel: +98-8634173502, Fax: +98-8634173529, E-mail:
| | - Mohamadreza Bayatiani
- Department of Radiotherapy, Faculty of Paramedicine, Arak University of Medical Sciences, Arak, IR Iran
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Tlili N, Feriani A, Allagui MS, Saadoui E, Khaldi A, Nasri N. Effects of Rhus tripartitum fruit extract on CCl4-induced hepatotoxicity and cisplatin-induced nephrotoxicity in rats. Can J Physiol Pharmacol 2016; 94:801-7. [PMID: 27351070 DOI: 10.1139/cjpp-2016-0029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rhus tripartitum D.C., Anacardiaceae, has traditionally been used in Tunisia against many illnesses. The present study investigates, for the first time, the protective effects of the methanol extract of Rhus tripartitum fruit (MERT) against CCl4-induced hepatotoxicity and cisplatin-induced nephrotoxicty in Wistar rats. ALT, AST, LDH, GGT, creatinin, urea, and uric acid levels were studied. The changes in antioxidant parameters such as malondialdehyde (MDA) and protein carbonyl contents were also determined. The increased levels of MDA (30.97 and 11.50 nmol MDA/mg protein in liver and kidney, respectively) and protein carbonyls (13.4 and 17.95 nmol/mg protein in liver and kidney, respectively) were attenuated by MERT pretreatment (19.35 and 6.1 nmol MDA/mg protein and 9.15 and 12 nmol/mg protein in liver and kidney, respectively). The MERT pretreatment significantly reduced the increased biochemical parameters of liver and kidney caused by CCl4 and cisplatin treatment. The histopathologic observation showed that MERT pretreatment restores the altered tissues. The observed results could be due to the high phenolic content and to MERT's important antioxidant potential. This study supports the hepatoprotective and nephroprotective effects of R. tripartitum.
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Affiliation(s)
- Nizar Tlili
- a Département de Biologie, Faculté des Sciences de Tunis, Université Tunis El-Manar, 2092 Tunis, Tunisia.,d Institut National de Recherches en Génie Rural, Eaux et Forêts, Université de Carthage, BP 10, Ariana 2080, Tunisia
| | - Anouar Feriani
- b Unité de Biochimie Macromoléculaire et Génétique, Faculté des Sciences de Gafsa, cité Zarroug, Université de Gafsa, 2112 Tunisia.,c Laboratoire d'Ecophysiologie Animale, Faculté des Sciences de Sfax, 3018, Tunisia
| | | | - Ezzeddine Saadoui
- d Institut National de Recherches en Génie Rural, Eaux et Forêts, Université de Carthage, BP 10, Ariana 2080, Tunisia
| | - Abdelhamid Khaldi
- d Institut National de Recherches en Génie Rural, Eaux et Forêts, Université de Carthage, BP 10, Ariana 2080, Tunisia
| | - Nizar Nasri
- a Département de Biologie, Faculté des Sciences de Tunis, Université Tunis El-Manar, 2092 Tunis, Tunisia
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Smina TP, Joseph J, Janardhanan KK. Ganoderma lucidum total triterpenes prevent γ-radiation induced oxidative stress in Swiss albino mice in vivo. Redox Rep 2016; 21:254-61. [PMID: 26817677 DOI: 10.1080/13510002.2015.1126098] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
OBJECTIVES The in vivo radio-protective effect of total triterpenes isolated from Ganoderma lucidum (Fr.) P. Karst was evaluated using Swiss albino mice, by pre-treatment with total triterpenes for 14 days, followed by a whole body exposure to γ-radiation. METHODS The activities of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx), and the level of reduced glutathione (GSH) were analysed in liver and brain homogenates. The extent of lipid and protein peroxidation was also estimated in liver and brain homogenates after irradiation. Protection of radiation-induced DNA strand breaks in peripheral blood lymphocytes and bone marrow cells was assessed using the comet assay. RESULTS Total triterpenes were highly effective in reducing the levels of lipid peroxidation and protein oxidation to near normal values in both liver and brain tissues. Total triterpenes, when administered in vivo, were also found to be successful in restoring the antioxidant enzyme activities and GSH level in liver and brain of irradiated mice. Administration of total triterpenes, prior to radiation exposure, significantly decreased the DNA strand breaks. DISCUSSION The results of the present study thus revealed the potential therapeutic use of Ganoderma total triterpenes as an adjuvant in radiation therapy.
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Affiliation(s)
- T P Smina
- a Amala Cancer Research Centre , Thrissur , Kerala , India.,b CeNTAB, SASTRA University , Thanjavur , Tamilnadu , India
| | - Jini Joseph
- a Amala Cancer Research Centre , Thrissur , Kerala , India.,c St. Peter's College , Ernakulam , Kerala , India
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Poodineh J, Khazaei Feizabad A, Nakhaee A. Antioxidant Activities ofCaralluma tuberculataon Streptozotocin-Induced Diabetic Rats. Drug Dev Res 2015; 76:40-47. [DOI: 10.1002/ddr.21239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 12/14/2014] [Indexed: 12/30/2022]
Affiliation(s)
- Jafar Poodineh
- Cellular and Molecular Research Center, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
- Department of Clinical Biochemistry, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
| | | | - Alireza Nakhaee
- Cellular and Molecular Research Center, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
- Department of Clinical Biochemistry, School of Medicine; Zahedan University of Medical Sciences; Zahedan Iran
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Mehrabi S, Wallace L, Cohen S, Yao X, Aikhionbare FO. Differential Measurements of Oxidatively Modified Proteins in Colorectal Adenopolyps. ACTA ACUST UNITED AC 2015; 6:288-299. [PMID: 26069854 PMCID: PMC4461072 DOI: 10.4236/ijcm.2015.64037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Introduction Adenopolyps patients have a three-fold higher risk of colon cancer over the general population, which increases to six-fold if the polyps are multiple and with lower survival among African American population. Currently, 6% of CRC can be ascribed to mutations in particular genes. Moreover, the optimal management of patients with colorectal adenopolyps depends on the accuracy of appropriate staging strategies because patients with similar colorectal adenocarcinoma architecture display heterogeneity in the course and outcome of the disease. Oxidative stress, due to an imbalance between reactive oxygen species (ROS) and antioxidant capacities as well as a disruption of redox signaling, causes a wide range of damage to DNA, proteins, and lipids which promote tumor formation. Objective/Method This study applied spectrophotometric, dinitrophenylhydrazone (DNPH) assay, two-dimensional gel electrophoresis, and western blot analyses to assess the levels of oxidatively modified proteins in 41 pairs of primary colorectal tissues including normal/surrounding, adenopolyps (tubular, tubulovillous, villous, polypvillous) and carcinoma. Analysis of variance (ANOVA) and Student’s t-tests were utilized for the resulting data set. Results Our data showed that the levels of reactive protein carbonyl groups significantly increased as colorectal adenopolyps progresses to malignancy. No significant differences were found in the levels of carbonyl proteins between gender samples analyzed. For African American patients, there were, relative to Caucasians, 10% higher levels of reactive carbonyls in proteins of tubulovillous tissue samples (P < 0.05) and over 36% higher in levels in adenocarcinomas (P < 0.05). In normal tissues and tubular, there were no significant differences between the two groups in levels of protein carbonyls. Differences in the levels of protein carbonyl expression within individual patient samples with different number of tumor cells were notably evident. Conclusion Results suggested that oxidative stress could be involved in the modification of oxidatively carbonyl proteins in the precancer stages, leading to increased aggressiveness of colorectal polyps.
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Affiliation(s)
- Sharifeh Mehrabi
- Department of Medicine, Morehouse School of Medicine, Atlanta, USA
| | | | - Shakeria Cohen
- Department of Medicine, Morehouse School of Medicine, Atlanta, USA
| | - Xuebiao Yao
- Department of Physiology, Morehouse School of Medicine, Atlanta, USA
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Ansarihadipour H, Dorostkar H. Comparison of plasma oxidative biomarkers and conformational modifications of hemoglobin in patients with diabetes on hemodialysis. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e22045. [PMID: 25763223 PMCID: PMC4329937 DOI: 10.5812/ircmj.22045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 09/15/2014] [Accepted: 10/06/2014] [Indexed: 01/26/2023]
Abstract
BACKGROUND Diabetes is associated with an increased generation of reactive oxygen species (ROS), which plays an important role in the development of oxidative stress and anemia. OBJECTIVES The main purpose of this study was to investigate whether patients with diabetes undergoing hemodialysis (HD) were susceptible to oxidative stress and whether resulting damages affect the structure of hemoglobin (Hb) and plasma proteins. PATIENTS AND METHODS Twenty patients with diabetes undergoing HD, 20 patients with diabetes and normal renal function, and 20 age- and sex-matched healthy subjects were included in this study. Methaemoglobin (Met-Hb), hemichrome and conformational changes of Hb were analyzed as oxidative markers in erythrocytes. Ferric reducing ability of plasma (FRAP) and protein carbonyl content (PCO) were determined as plasma oxidative biomarkers. Also triglyceride, cholesterol, albumin, blood urea nitrogen (BUN), creatinine, glucose and uric acid were assayed as biochemical parameters of plasma. RESULTS Patients with diabetes undergoing hemodialysis had significantly lower levels of PCO and albumin (P < 0.05), but significantly higher levels of FRAP, BUN, creatinine and uric acid (P < 0.05) as compared to patients with diabetes and normal renal function. Linear regression analysis showed significant negative correlations between PCO and FRAP (r = -0.53), oxy-Hb (r = -0.88) and Hb absorbance at 340 nm (r = -0.79), 420 nm (r = -0.85) and 577 nm (r = -0.68) in patients with diabetes undergoing hemodialysis. Also PCO was significantly and positively correlated with Hb absorbance at 275 nm (r = 0.63) and 560 nm (r = 0.61) which confirmed the oxidative damage to erythrocytes in control subjects. CONCLUSIONS Hemodialysis exacerbates oxidative stress and conformational changes of Hb in patients with diabetes on hemodialysis. The FRAP value can be used as a positive determinant, while PCO and Hb derivatives can be used as negative determinants of oxidative stress in patients with diabetes.
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Affiliation(s)
- Hadi Ansarihadipour
- Department of Biochemistry and Genetics, Arak University of Medical Sciences, Arak, IR Iran
- Corresponding Author: Hadi Ansarihadipour, Department of Biochemistry and Genetics, Arak University of Medical Sciences, Arak, IR Iran. Tel: +98-8634173502, Fax: +98-8634173529, E-mail:
| | - Hamidreza Dorostkar
- Student Research Committee, Arak University of Medical Sciences, Arak, IR Iran
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Chtourou Y, Garoui EM, Boudawara T, Zeghal N. Protective role of silymarin against manganese-induced nephrotoxicity and oxidative stress in rat. ENVIRONMENTAL TOXICOLOGY 2014; 29:1147-1154. [PMID: 23339144 DOI: 10.1002/tox.21845] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 12/15/2012] [Accepted: 12/25/2012] [Indexed: 06/01/2023]
Abstract
Metal toxicity may occur after exposure from many sources. Oxidative stress is thought to be involved in manganese-induced toxicity and leads to various health disorders. Silymarin (SIL), a natural flavonoid, has been reported to have many benefits and medicinal properties. The aim of this study was to assess the toxicity of manganese (Mn) on oxidative stress and DNA damage in the kidney of rats and its alleviation by SIL. Manganese was given orally in drinking water (20 mg MnCl2 /mL) with or without SIL administration (100 mg /kg intraperitoneally) for 30 days. Our data showed that SIL significantly prevented Mn induced nephrotoxicity, indicated by both diagnostic indicators of kidney injury like plasma urea, uric acid and creatinine and urinary electrolyte levels and by histopathological analysis. Moreover, Mn-induced profound elevation of the production of reactive oxygen species (ROS) and altered the levels of oxidative stress related biomarkers in kidney tissue. This is evidenced by the increase of lipid peroxidation, protein carbonylation, DNA fragmentation and urinary hydrogen peroxide, while, the activities of enzymatic antioxidant and glutathione level were decreased. Treatment with SIL reduced the alterations in the renal and urine markers, decreasing lipid peroxidation markers, increasing the antioxidant cascade and decreasing the Mn-induced damage. All these changes were supported by histopathological observations. These findings suggested that the inhibition of Mn-induced damage by SIL was due at least in part to its antioxidant activity and its capacity to modulate the oxidative damage.
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Affiliation(s)
- Yassine Chtourou
- Department of Life Sciences, Animal Physiology Laboratory, UR/08-73, University of Sfax, Faculty of Sciences, BP 1171, 3000 Sfax, Tunisia
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Oxidatively modified proteins in the serous subtype of ovarian carcinoma. BIOMED RESEARCH INTERNATIONAL 2014; 2014:585083. [PMID: 24795885 PMCID: PMC3985143 DOI: 10.1155/2014/585083] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 02/01/2014] [Accepted: 02/24/2014] [Indexed: 01/17/2023]
Abstract
Serous subtype of ovarian cancer is considered to originate from fallopian epithelium mucosa that has been exposed to physiological changes resulting from ovulation. Ovulation influences an increased in inflammation of epithelial ovarian cells as results of constant exposure of cells to ROS. The imbalance between ROS and antioxidant capacities, as well as a disruption of redox signaling, causes a wide range of damage to DNA, proteins, and lipids. This study applied spectrophotometric, dinitrophenylhydrazone (DNPH) assay, two-dimensional gel electrophoresis, and Western blot analyses to assess the levels of oxidatively modified proteins in 100 primary serous epithelial ovarian carcinoma and normal/surrounding tissues. These samples were obtained from 56 Caucasian and 44 African-American patients within the age range of 61 ± 10 years. Analyses showed that the levels of reactive protein carbonyl groups increased as stages progressed to malignancy. Additionally, the levels of protein carbonyls in serous ovarian carcinoma among African Americans are 40% (P < 0.05) higher relative to Caucasian at similar advanced stages. Results suggest that oxidative stress is involved in the modification of carbonyl protein groups, leading to increased aggressiveness of epithelial ovarian tumors and may contribute to the disease's invasiveness among African Americans.
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Tuzcu EA, Tuzcu K, Basarslan F, Motor S, Coskun M, Keskin U, Ayintap E, Ilhan O, Oksuz H. Protective effects of N-acetylcysteine on triamcinolone acetonide-induced lens damage in rats. Cutan Ocul Toxicol 2014; 33:294-8. [PMID: 24641112 DOI: 10.3109/15569527.2013.857679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
OBJECTIVE To examine the relationship of cataract forming effect of intravitreal triamcinolone acetonide (IVTA) injection with oxidative status and the effect of N-acetylcysteine (NAC) on these alterations. MATERIALS AND METHODS Twenty-six Wistar-Albino rats were included in the study. Rats were assigned into four groups as follows: intravitreal saline injection group (controls); IVTA injection group; IVTA + intraperitoneal NAC injection group (IVTA + NAC); and intraperitoneal NAC injection group (NAC). Triamcinolone acetonide was intravitreally injected at a dose of 1 mg. NAC was intraperitoneally injected at a dose of 150 µg/g body weight. Animals were sacrificed and lens specimens were analyzed for levels of malondialdehyde (MDA) and protein carbonyl (PC) and activities of glutathione (GSH) and glutathione peroxidase (GSH-Px). RESULTS We found that the MDA and PC levels of lenses were increased in the IVTA group (p < 0.01). It was seen that GSH and GSH-Px in lenses were decreased in the IVTA group (p < 0.01). NAC administration significantly ameliorated these changes in the IVTA + NAC group (p < 0.05). CONCLUSION These results indicate that the NAC produces a protective mechanism against IVTA-induced cataract and suggest a role of oxidative stress in pathogenesis.
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Demir M, Amanvermez R, Kamalı Polat A, Karabıçak İ, Çınar H, Kesicioğlu T, Polat C. The effect of silymarin on mesenteric ischemia-reperfusion injury. Med Princ Pract 2014; 23:140-4. [PMID: 24356575 PMCID: PMC5586953 DOI: 10.1159/000356860] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 10/21/2013] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To examine the effect of silymarin (SM), a mixture of flavonoids and polyphenols extracted from Silybum marianum, on mesenteric ischemia-reperfusion (I-R) injury in a rat model. MATERIALS AND METHODS Fifty rats were randomly divided into 5 groups (n = 10). Group 1 was sham operated, while groups 2-5 were subjected to mesenteric I-R lasting 1 h. Group 2 received isotonic sodium chloride, group 3 received SM (100 mg/kg/day) for 7 days before I-R, group 4 received SM for 7 days after I-R, and group 5 received SM for 7 days both before and after I-R. The rats were sacrificed by exsanguination in groups 1-3 at the 24th hour and groups 4 and 5 were sacrificed on the 7th day of reperfusion. Blood and intestinal specimens were taken for biochemical and pathological evaluations. RESULTS Serum superoxide dismutase (SOD) and heat shock protein 70 levels were significantly higher in group 2 (5.24 ± 1.76 U/l and 261.4 ± 16.8 ng/ml) compared to the sham group (2.08 ± 1.76 U/l and 189.9 ± 28.7 ng/ml) (p < 0.001 and p < 0.0001, respectively). However, SOD activity and the extent and severity of the histopathological lesions were significantly less in groups 3 [3.11 ± 1.18 U/l, 1.0 (range 0.0-2.0)], 4 [2.15 ± 0.87 U/l, 1.0 (range 1.0-3.0)], and 5 [1.80 ± 0.61 U/l, 0.5 (range 0.0-2.0)], treated with SM, than in group 2 [5.24 ± 1.76 U/l, 2.0 (range 2.0-3.0)] (p = 0.002, p < 0.001, and p = 0.0001; p < 0.001, p = 0.007, and p = 0.0001, respectively). Also, TNF-α levels were lower in the SM-supplemented groups compared to group 2. Serum thiobarbituric acid-reactive substance concentrations were low in the pre-/posttreatment groups treated with SM compared to group 2. No statistical difference was observed for protein carbonyls between the groups. CONCLUSION Our findings suggest that SM therapy may attenuate the oxidative and intestinal damage induced by I-R injuries.
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Affiliation(s)
- M. Demir
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
| | - R. Amanvermez
- Department of Medical Biochemistry, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
- *Dr. Ramazan Amanvermez, Department of Medical Biochemistry, Faculty of Medicine, Ondokuz Mayıs University, TR-55139 Samsun (Turkey), E-Mail
| | - A. Kamalı Polat
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
| | - İ. Karabıçak
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
| | - H. Çınar
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
| | - T. Kesicioğlu
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
| | - C. Polat
- Department of General Surgery, Ondokuz Mayıs University, Samsun, Turkey
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Seçkin HY, Kalkan G, Baş Y, Akbaş A, Önder Y, Özyurt H, Sahin M. Oxidative stress status in patients with melasma. Cutan Ocul Toxicol 2013; 33:212-7. [PMID: 24147944 DOI: 10.3109/15569527.2013.834496] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Melasma is an acquired skin disease characterized clinically by development of gray-brown macules or patches. The lesions have geographic borders and most often seen on face and less frequently on the neck and forearms. Pathogenesis has not been completely understood yet. Although the disease constitutes a very disturbing cosmetic problem, it has not obtained an efficient treatment. There were not any studies in the literature that evaluates the role of oxidative stress in melasma. OBJECTIVES The evaluation of the role of oxidative stress in melasma. METHODS Fifty melasma patients and 50 healthy volunteers were included in the study. The diagnosis was made clinically and the patients were evaluated by Melasma Area Severity Index. Superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) enzyme activities and malondialdehyde, nitric oxide, protein carbonyl levels were measured both in the melasma group and the control group. RESULTS SOD and GSH-Px enzyme activities were significantly higher in the patient group in comparison with the control group (p < 0.001). Protein carbonyl levels were significantly lower in the patient group (p < 0.001). CONCLUSION The results show that the balance between oxidant and anti-oxidants was disrupted and the oxidative stress increased in melasma. These results improve the understanding of etiology-pathogenesis of the disease and its treatment.
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Bommavaram M, Korivi M, Borelli DPR, Pabbadhi JD, Nannepaga JS. Bacopa monniera stabilized gold nanoparticles (BmGNPs) alleviated the oxidative stress induced by aluminum in albino mice. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.dit.2013.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Protection Against Oxidative Stress Caused by Intermittent Cold Exposure by Combined Supplementation with Vitamin E and C in the Aging Rat Hypothalamus. Neurochem Res 2013; 38:876-85. [DOI: 10.1007/s11064-013-0993-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 01/27/2013] [Accepted: 01/29/2013] [Indexed: 11/26/2022]
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Chtourou Y, Garoui E, Boudawara T, Zeghal N. Therapeutic efficacy of silymarin from milk thistle in reducing manganese-induced hepatic damage and apoptosis in rats. Hum Exp Toxicol 2013; 32:70-81. [PMID: 22899727 DOI: 10.1177/0960327112455674] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Oxidative stress has been proposed as a possible mechanism involved in manganese (Mn) toxicity. Using natural antioxidants against metal-induced hepatotoxicity is a modern approach. The present study investigated the beneficial role of silymarin, a natural flavonoid, in Mn-induced hepatotoxicity focusing on histopathology and biochemical approaches. Male Wistar rats were exposed orally to manganese chloride (20 mg/mL) for 30 days followed by intraperitoneal cotreatment with silymarin (100 mg/kg). Exposure to Mn resulted in a significant elevation of the plasma marker enzyme activities and bilirubin level related to liver dysfunction of reactive oxygen species (ROS) production and hepatic oxidative stress indices. This metal reduced the activities of superoxide dismutase, catalase and glutathione peroxidase and nonenzymatic antioxidant levels such as reduced glutathione, total sulfhydryl groups and vitamin C. In addition, it caused hepatic hemorrhage, cellular degeneration and necrosis of hepatocytes as indicated by liver histopathology and DNA fragmentation studies. Coadministration of silymarin alleviated Mn oxidative damage effects by inhibiting ROS generation. Histological studies also supported the beneficial role of silymarin against Mn-induced hepatic damages. Combining all, results suggested that silymarin could protect hepatic tissues against Mn-induced oxidative stress probably through its antioxidant activity. Therefore, its supplementation could provide a new approach for the reduction in hepatic complication due to Mn poisoning.
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Affiliation(s)
- Y Chtourou
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia
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Amanvermez R, Acar E, Günay M, Baydın A, Yardan T, Bek Y. Hsp 70, hsCRP and oxidative stress in patients with acute coronary syndromes. Bosn J Basic Med Sci 2012; 12:102-7. [PMID: 22642594 DOI: 10.17305/bjbms.2012.2508] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Acute coronary syndromes (ACS) like unstable angina (UA) and acute myocardial infarction (AMI) can lead to the morbidity and mortality. The diagnosis and management of patients with ACS in the earliest times after symptom onset are considerably important in the emergency service. Study aimed to investigate the serum levels of heat shock protein 70 (Hsp 70), high sensitivity C-reactive protein (hsCRP), total creatine kinase (CK) activity, creatine kinase MB (CK-MB), cardiac troponin I (cTnI), leukocyte count (WBCs) and markers of oxidative stress in the first hours of ACS and to view their diagnostic values. 70 patients with ACS after admission and 20 sex-matched healthy controls were included in this study. Serum Hsp 70, hsCRP, CK, CK-MB, cTnI, protein carbonyls, malondialdehyde as well as whole blood WBCs were measured. The level of hsCRP was statistically higher in patients with AMI and UA than that of control group (p<0.001). WBCs and oxidized protein levels were higher in AMI than in UA and control groups. cTnI was related to CK-MB in AMI and UA groups (r=0.731, r=0.806, p<0.001, respectively) and also related with hsCRP in UA group (r=0.824, p<0.001). The mean Hsp 70 level was higher by 32.2% in AMI and 12.7% in UA patients compared to control subjects. hsCRP may have a role in the inflammatory response after ACS. In addition to cTnI and CK-MB, WBCs and hsCRP may be useful as a marker for the identification of ACS patients with chest pain in early diagnosing.
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Affiliation(s)
- Ramazan Amanvermez
- Department of Biochemistry, School of Medicine, Ondokuz Mayıs University 55139 Samsun, Turkey
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Carbonero-Aguilar P, Diaz-Herrero MDM, Campo JAD, Cremades O, Romero-Gómez M, Bautista J. Hyperammonemia induced oxidative stress in cirrhotic rats without promoting differential protein expression in the brain cortex: A 2D-DIGE analysis. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/abb.2012.38137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Chtourou Y, Fetoui H, Garoui EM, Boudawara T, Zeghal N. Improvement of cerebellum redox states and cholinergic functions contribute to the beneficial effects of silymarin against manganese-induced neurotoxicity. Neurochem Res 2011; 37:469-79. [PMID: 22033861 DOI: 10.1007/s11064-011-0632-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/03/2011] [Accepted: 10/05/2011] [Indexed: 12/17/2022]
Abstract
Manganese (Mn) is a potent neurotoxin involved in the initiation and progression of various cognitive disorders. Oxidative stress is reported as one of accepted mechanisms of Mn toxicity. The present study was designed to explore the effects of silymarin, a natural antioxidant, in attenuating the toxicity induced by Mn in rat cerebellum. In this investigation, rats were treated orally with MnCl₂ (20 mg/ml) for 30 days, subsets of these animals were treated intraperitoneally daily with silymarin (100 mg/kg) along with respective controls. Mn exposure caused a marked oxidative stress in cerebellum as indicated by a significant decrease in the activities of enzymatic antioxidants like superoxide dismutase, catalase and glutathione peroxidase and in the levels of non-enzymatic antioxidants like reduced glutathione (GSH), total thiols and vitamin C. Conversely an increase was obtained in lipid and protein markers such as thiobarbituric reactive acid substances, lipid hydroperoxide and protein carbonyl products contents. A significant increase in acetylcholinesterase and a decrease in Na⁺/K⁺-ATPase activities were also shown, with a substantial rise in the expression of acetylcholinesterase and inducible nitric oxide synthase (iNOS), and nitric oxide levels. The potential effect of SIL to prevent Mn induced neurotoxicity was also reflected by histopathological observations. Rats exposed to Mn showed a reduced number and morphological alterations of cerebellar Purkinje cells. These phenomenons were completely reversed by SIL co-treatment. We concluded that silymarin may protect against Mn-induced oxidative stress in cerebellum by inhibiting both lipid and protein oxidation and by activating acetylcholinesterase and inducible nitric oxide synthase (iNOS) gene expression.
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Affiliation(s)
- Yassine Chtourou
- Animal Physiology Laboratory, Life Sciences Department, UR/08-73, Sfax Faculty of Sciences, University of Sfax, BP1171, 3000 Sfax, Tunisia
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Abstract
AbstractOrganophosphate pesticides are known to induce oxidative stress and cause oxidative tissue damage, as has been reported in studies concerning acute and chronic intoxication with these compounds.Our objective was to investigate the activities of brain antioxidant enzymes and malonyldialdehyde, as well as the level of carbonyl groups, in rats sub-chronically intoxicated with chlorpyrifos at doses of 0.2, 2 and 5 mg per kg of body weight per day. It was found that chlorpyrifos induces change in brain antioxidant enzymes, such as superoxide dismutase, catalase and glutathione peroxidise, but to a different degree in comparison to proper control values; however, the elevated antioxidant enzymes activities failed to check lipid and protein peroxidation in the brains of rats. Thus, in sub-chronic intoxication with chlorpyrifos, as evidenced by increased level of malonyldialdehyde and carbonyl groups, oxidative stress is induced.Measurements of protein carbonyl groups appeared to give more consistent responses in the rats’ brains when compared to the malonyldialdehyde level after sub-chronic chlorpyrifos treatment.
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Yildirim Z, Kilic N. Effects of Taurine and Age on Cerebellum Antioxidant Status and Oxidative Stress. INT J GERONTOL 2011. [DOI: 10.1016/j.ijge.2011.09.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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Carbonero-Aguilar P, Diaz-Herrero MDM, Cremades O, Romero-Gómez M, Bautista J. Brain biomolecules oxidation in portacaval-shunted rats. Liver Int 2011; 31:964-9. [PMID: 21733085 DOI: 10.1111/j.1478-3231.2011.02515.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
BACKGROUND Oxidative stress induced by a high ammonia concentration has been suggested to be implicated in the pathophysiology of hepatic encephalopathy (HE). Therefore, oxidative damage of brain biomolecules could contribute towards explaining the neurological and motor alterations observed in HE. METHODS Portacaval-shunted (PCS) rats (n = 5) were used as an animal model of chronic HE. Plasma and brain ammonia were measured by the l-glutamate dehydrogenase method. Reactive oxygen species was measured by the dichlorodihydrofluorescein diacetate method. Lipid peroxidation was measured as thiobarbituric acid-reactive substances (TBARS) by a colorimetric method; malondialdehyde (MDA) and 4-hydroxy-2-noneal (HNE) were measured by HPLC and an immunological method respectively. Protein oxidation (carbonylation) was measured as total carbonyl after labelling with 2,4-dinitrophenyl hydrazine (DNPH) using a spectrophotometric method. Individual protein oxidation was studied, after labelling with DNPH and its separation by one-dimensional (1D) electrophoresis, by an immunological method. RESULTS Ammonia-induced oxidative stress in PCS rats was associated with increased MDA and HNE, together with increased protein oxidation, evidenced by total carbonyl quantification and by the analysis of individual protein bands separated by 1D electrophoresis. However, lipid peroxidation measured as TBARS did not show differences. CONCLUSION Our data show an increased evidence of oxidative stress in PCS rat brain; moreover, PCS rat brain proteins are oxidized (carbonylated), some proteins being more sensitive to oxidation than others. These data also show that at least six specific brain proteins in PCS rats are highly sensitive to carbonylation. Identification of these proteins may be crucial for a better understanding of HE pathophysiology.
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Affiliation(s)
- Pilar Carbonero-Aguilar
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
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Chtourou Y, Trabelsi K, Fetoui H, Mkannez G, Kallel H, Zeghal N. Manganese induces oxidative stress, redox state unbalance and disrupts membrane bound ATPases on murine neuroblastoma cells in vitro: protective role of silymarin. Neurochem Res 2011; 36:1546-57. [PMID: 21533646 PMCID: PMC3139064 DOI: 10.1007/s11064-011-0483-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2011] [Indexed: 02/07/2023]
Abstract
Manganese (Mn) is an essential trace element required for ubiquitous enzymatic reactions. Chronic overexposure to this metal may promote potent neurotoxic effects. The mechanism of Mn toxicity is not well established, but several studies indicate that oxidative stress play major roles in the Mn-induced neurodegenerative processes. Silymarin (SIL) has antioxidant properties and stabilizes intracellular antioxidant defense systems. The aim of this study was to evaluate the toxic effects of MnCl2 on the mouse neuroblastoma cell lines (Neuro-2A), to characterize the toxic mechanism associated with Mn exposure and to investigate whether SIL could efficiently protect against neurotoxicity induced by Mn. A significant increase in LDH release activity was observed in Neuro-2A cells associated with a significant decrease in cellular viability upon 24 h exposure to MnCl2 at concentrations of 200 and 800 μM (P < 0.05) when compared with control unexposed cells. In addition, exposure cells to MnCl2 (200 and 800 μM), increases oxidant biomarkers and alters enzymatic and non enzymatic antioxidant systems. SIL treatment significantly reduced the levels of LDH, nitric oxide, reactive oxygen species and the oxidants/antioxidants balance in Neuro-2A cells as compared to Mn-exposed cells. These results suggested that silymarin is a powerful antioxidant through a mechanism related to its antioxidant activity, able to interfere with radical-mediated cell death. SIL may be useful in diseases known to be aggravated by reactive oxygen species and in the development of novel treatments for neurodegenerative disorders such as Alzheimer or Parkinson diseases.
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Affiliation(s)
- Yassine Chtourou
- Animal Physiology Laboratory, Life Sciences Department, Faculty of Sciences, UR/08-73, Sfax University, BP 1171, 3000, Sfax, Tunisia
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