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Biswas A, Choudhury AD, Agrawal S, Bisen AC, Sanap SN, Verma SK, Kumar M, Mishra A, Kumar S, Chauhan M, Bhatta RS. Recent Insights into the Etiopathogenesis of Diabetic Retinopathy and Its Management. J Ocul Pharmacol Ther 2024; 40:13-33. [PMID: 37733327 DOI: 10.1089/jop.2023.0068] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023] Open
Abstract
Purpose: Diabetic retinopathy (DR) is a microvascular retinal disease associated with chronic diabetes mellitus, characterized by the damage of blood vessels in the eye. It is projected to become the leading cause of blindness, given the increasing burden of the diabetic population worldwide. The diagnosis and management of DR pose significant challenges for physicians because of the involvement of multiple biochemical pathways and the complexity of ocular tissues. This review aims to provide a comprehensive understanding of the molecular pathways implicated in the pathogenesis of DR, including the polyo pathway, hexosamine pathway, protein kinase C (PKC), JAK/STAT signaling pathways, and the renin-angiotensin system (RAS). Methods: Academic databases such as PubMed, Scopus, Google Scholar and Web of Science was systematically searched using a carefully constructed search strategy incorporating keywords like "Diabetic Retinopathy," "Molecular Pathways," "Pharmacological Treatments," and "Clinical Trials" to identify relevant literature for the comprehensive review. Results: In addition to activating other inflammatory cascades, these pathways contribute to the generation of oxidative stress within the retina. Furthermore, it aims to explore the existing pharmacotherapy options available for the treatment of DR. In addition to conventional pharmacological therapies such as corticosteroids, antivascular endothelial growth factors, and nonsteroidal anti-inflammatory drugs (NSAIDs), this review highlights the potential of repurposed drugs, phyto-pharmaceuticals, and novel pipeline drugs currently undergoing various stages of clinical trials. Conclusion: Overall, this review serves as a technical exploration of the complex nature of DR, highlighting both established and emerging molecular pathways implicated in its pathogenesis. Furthermore, it delves into the available pharmacological treatments, as well as the promising repurposed drugs, phyto-pharmaceuticals, and novel drugs currently being evaluated in clinical trials, with a focus on their specific mechanisms of action.
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Affiliation(s)
- Arpon Biswas
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Jawaharlal Nehru University, New Delhi, India
| | - Abhijit Deb Choudhury
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Jawaharlal Nehru University, New Delhi, India
| | - Sristi Agrawal
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Amol Chhatrapati Bisen
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Sachin Nashik Sanap
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Sarvesh Kumar Verma
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Jawaharlal Nehru University, New Delhi, India
| | - Mukesh Kumar
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Jawaharlal Nehru University, New Delhi, India
| | - Anjali Mishra
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research, New Delhi, India
| | - Shivansh Kumar
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Mridula Chauhan
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Rabi Sankar Bhatta
- Pharmaceutics and Pharmacokinetic Division, CSIR-Central Drug Research Institute, Lucknow, India
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Laurindo LF, Direito R, Bueno Otoboni AMM, Goulart RA, Quesada K, Barbalho SM. Grape Processing Waste: Effects on Inflammatory Bowel Disease and Colorectal Cancer. FOOD REVIEWS INTERNATIONAL 2023. [DOI: 10.1080/87559129.2023.2168281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Lucas Fornari Laurindo
- Department of Biochemistry and Pharmacology/School of Medicine, UNIMAR, Marília, São Paulo, Brazil
| | - Rosa Direito
- Department of Pharmacy, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
| | | | - Ricardo Alvares Goulart
- Postgraduate Program (Structural and Functional Interactions in Rehabilitation), UNIMAR, Marília, São Paulo, Brazil
| | - Karina Quesada
- Department of Biochemistry and Pharmacology/School of Medicine, UNIMAR, Marília, São Paulo, Brazil
| | - Sandra Maria Barbalho
- Department of Biochemistry and Pharmacology/School of Medicine, UNIMAR, Marília, São Paulo, Brazil
- Department of Biochemistry and Nutrition, FATEC, Avenida Castro Alves, São Paulo, Brazil
- Postgraduate Program (Structural and Functional Interactions in Rehabilitation), UNIMAR, Marília, São Paulo, Brazil
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Abd-Elrahim R, Tohamy MRA, Atia MM, Elashtokhy MMA, Ali MAS. Bactericidal activity of some plant essential oils against Ralstonia solanacearum infection. Saudi J Biol Sci 2022; 29:2163-2172. [PMID: 35531193 PMCID: PMC9073021 DOI: 10.1016/j.sjbs.2021.11.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/21/2021] [Accepted: 11/17/2021] [Indexed: 11/21/2022] Open
Abstract
Potato plants and their tubers in Egypt are affected by one of the most renowned soil-borne pathogen, Ralstonia solanacearum, that caused brown rot in potato tubers and wilt in plants. There is no efficient therapeutic bactericide so; control of bacterial wilt is very rough. The study investigated three different concentrations of seven essential plant oils under in vitro and in vivo conditions as a result of their effects on Ralstonia solanacearum growth and their possibility use as potato seed pieces dressing for controlling bacterial wilt disease incidence. In vitro, anise oil at the three tested different concentrations (0.04, 0.07, and 0.14% vol/vol) was the most effective one inhibiting the growth of T4 and W9 isolates of Ralstonia solanacearum then pursued by thyme, lemongrass, and clove oils. On the other hand, rocket oil at the tested concentration was the least effective one followed by fennel oil. However, wheat germ oil was not completely effective. In vivo, experiment revealed that anise oil at the three concentrations significantly reduced disease incidence and severity in sponta and hermes potato cultivars and their effect was associated with increase of peroxidase, polyphenoloxidase, phenols and the foliar fresh weight of treated plants as well as the weight of tubers/plant followed by thyme and lemongrass oils compared to the infected untreated control. Morphological differences in bacterial cell structure have been observed using a transmission electron microscope (TEM). Anise oil at higher concentration caused of cell wall rupture and degraded cellular components.
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Affiliation(s)
- Rahma Abd-Elrahim
- Plant Pathology Dept., Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Mohamed R A Tohamy
- Plant Pathology Dept., Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Mahmoud M Atia
- Plant Pathology Dept., Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | | | - Mohamed A S Ali
- Plant Pathology Dept., Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
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Tedesco I, Spagnuolo C, Russo GL, Russo M, Cervellera C, Moccia S. The Pro-Oxidant Activity of Red Wine Polyphenols Induces an Adaptive Antioxidant Response in Human Erythrocytes. Antioxidants (Basel) 2021; 10:antiox10050800. [PMID: 34070135 PMCID: PMC8158335 DOI: 10.3390/antiox10050800] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/21/2022] Open
Abstract
The protective effect of dealcoholized red wine on human health has been partially associated with its polyphenolic components, suggesting that the pool of polyphenols, including flavonoids and anthocyanins, can be responsible for the functional effects of this beverage. We hypothesize a new role of red wine polyphenols (RWp) in modulating the antioxidant potential of erythrocytes, protecting them against oxidative stress. We previously demonstrated that RWp activated the Plasma Membrane Redox System (PMRS), which is involved in neutralizing plasma free radicals. Here, we investigated the underlying mechanism triggered by RWp in the activation of PMRS via the involvement of GSH. Hence, treatment of human erythrocytes with RWp (73 μg/mL Gallic Acid Equivalents) increased GSH intracellular concentration, which depends upon the activation of glutathione reductase (GR) and glucose-6-phosphate dehydrogenase (G6PD), whose enzymatic activities increase of about 30% and 47%, respectively. Changes in the GSH pathway induced by RWp were associated with a slight but significant increase in reactive oxygen species (ROS). We conclude that the pro-oxidant effect of RWp promoted an adaptive stress response in human erythrocytes, which enhances their antioxidant defense.
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Ghlissi Z, Kallel R, Krichen F, Hakim A, Zeghal K, Boudawara T, Bougatef A, Sahnoun Z. Polysaccharide from Pimpinella anisum seeds: Structural characterization, anti-inflammatory and laser burn wound healing in mice. Int J Biol Macromol 2020; 156:1530-1538. [DOI: 10.1016/j.ijbiomac.2019.11.201] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/18/2019] [Accepted: 11/25/2019] [Indexed: 12/15/2022]
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Husain N, Mahmood R. Mitigation of Cu(II)-induced damage in human blood cells by carnosine: An in vitro study. Toxicol In Vitro 2020; 68:104956. [PMID: 32745495 DOI: 10.1016/j.tiv.2020.104956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/08/2020] [Accepted: 07/28/2020] [Indexed: 12/12/2022]
Abstract
Copper (Cu) is an essential micronutrient but human exposure to high level of this metal results in adverse health effects. Oxidative stress is assumed to play a major role in the mechanism of Cu-induced toxicity. The protective role of carnosine, an antioxidant and antiglycating agent, was examined against Cu-induced toxicity in isolated human blood cells. Red blood cells (RBC) were treated with 0.5 mM copper chloride (CuCl2), a Cu(II) compound, either alone or after treatment with carnosine. Incubation of RBC with CuCl2 increased protein oxidation, lipid peroxidation, methemoglobin formation and lowered glutathione content. The antioxidant defense system was impaired and production of reactive oxygen (ROS) and reactive nitrogen species (RNS) was enhanced. Pre-incubation of RBC with carnosine protected the cells against CuCl2-induced oxidative damage. It restored the activities of several antioxidant, membrane-bound and metabolic enzymes, decreased the generation of ROS and RNS, enhanced the antioxidant power of cells and prevented inactivation of plasma membrane redox system. Carnosine also protected human lymphocytes from CuCl2-induced DNA damage. The protective effects of carnosine were concentration-dependent while carnosine itself did not exhibit any adverse effect. Carnosine can, therefore, be used as a possible chemoprotectant against the harmful effects of this extremely redox active metal.
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Affiliation(s)
- Nazim Husain
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
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7
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Naz R, Roberts TH, Bano A, Nosheen A, Yasmin H, Hassan MN, Keyani R, Ullah S, Khan W, Anwar Z. GC-MS analysis, antimicrobial, antioxidant, antilipoxygenase and cytotoxic activities of Jacaranda mimosifolia methanol leaf extracts and fractions. PLoS One 2020; 15:e0236319. [PMID: 32726328 PMCID: PMC7390342 DOI: 10.1371/journal.pone.0236319] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/01/2020] [Indexed: 02/06/2023] Open
Abstract
Jacaranda mimosifolia trees are grown in frost-free regions globally. The aim of this study was to evaluate the methanol crude extract and various fractions of increasing polarity of J. mimosifolia leaves for bioactive metabolites, as well as antimicrobial, antioxidant and anticancer activities. The anti-inflammatory potential of the various fractions of J. mimosifolia leaf extract was studied via the lipoxygenase (LOX) inhibitory assay. Methanol crude extract (ME), derived fractions extracted with chloroform (CF) and ethyl acetate (EAF), and residual aqueous extract (AE) of dried J. mimosifolia leaves were assayed for polyphenolic compounds, their antioxidant, antimicrobial and lipoxygenase (LOX) inhibitory activities, and anticancer properties. Polyphenolic compounds were determined via HPLC while phytochemicals (total phenolics, flavonoids, tannins and ortho-diphenol contents), antioxidant activities (DPPH, hydrogen peroxideperoxide, hydroxyl and superoxide radical anions) and LOX were measured via spectrophotometry. Methanol extracts and various fractions were evaluated for antibacterial activities against Bacillus subtilis, Klebsiella pneumonia, Pseudomonas aeruginosa and Staphylococcus aureus. Antifungal potential of the fractions was tested against three species: Aspergillus flavus, Aspergillus fumigatus and Fusarium oxysporum. The highest values for total phenolic content (TPC), total flavonoid content (TFC), flavonols, tannins and ortho-diphenols were in the ME, followed by CF > EAF > AE. ME also had the highest antioxidant activity with EC50 values 48±1.3, 45±2.4, 42±1.3 and 46±1.3 μg/mL based on the DPPH, hydrogen peroxide, hydroxyl radical and superoxide radical assays, respectively. TPC and TFC showed a significant, strong and positive correlation with the values for each of these antioxidant activities. ME exhibited anti-inflammatory potential based on its LOX inhibitory activity (IC50 = 1.3 μg/mL). ME also had the maximum antibacterial and antifungal potential, followed by EAF > CF > AE. Furthermore, ME showed the strongest cytotoxic effect (EC50 = 10.7 and 17.3 μg/mL) against human hormone-dependent prostate carcinoma (LnCaP) and human lung carcinoma (LU-1) cell lines, respectively. Bioactive compounds present in leaf methanol extracts of J. mimosifolia were identified using gas chromatography–mass spectrometry (GC–MS). Fifteen compounds were identified including phenolic and alcoholic compounds, as well as fatty acids. Our results suggest that J. mimosifolia leaves are a good source of natural products with antioxidant, anti-inflammatory and anti-cancer properties for potential therapeutic, nutraceutical and functional food applications.
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Affiliation(s)
- Rabia Naz
- Department of Biosciences, COMSATS University, Islamabad, Pakistan
- * E-mail:
| | - Thomas H. Roberts
- Plant Breeding Institute, Sydney Institute of Agriculture, University of Sydney, Sydney, NSW, Australia
| | - Asghari Bano
- Department of Biosciences, University of Wah, Wah Cantt, Pakistan
| | - Asia Nosheen
- Department of Biosciences, COMSATS University, Islamabad, Pakistan
| | - Humaira Yasmin
- Department of Biosciences, COMSATS University, Islamabad, Pakistan
| | | | - Rumana Keyani
- Department of Biosciences, COMSATS University, Islamabad, Pakistan
| | - Sami Ullah
- Department of Botany, University of Peshawar, Peshawar, Pakistan
| | - Wajiha Khan
- Department of Biotechnology, COMSATS University Islamabad, Abbotabad Campus, Abbotabad, Pakistan
| | - Zahid Anwar
- Department of Computer Science, COMSATS University Islamabad, Vehari Campus, Vehari, Pakistan
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Husain N, Mahmood R. Taurine attenuates Cr(VI)-induced cellular and DNA damage: an in vitro study using human erythrocytes and lymphocytes. Amino Acids 2019; 52:35-53. [PMID: 31781908 DOI: 10.1007/s00726-019-02807-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 11/15/2019] [Indexed: 01/20/2023]
Abstract
Hexavalent chromium [(Cr(VI)] is widely used in several industries, but human exposure results in multiple organ toxicity. Enhanced generation of free radicals and reactive species is thought to play a key role in Cr(VI)-induced toxicity. We have examined the effect of taurine, a simple sulphur-containing amino acid and an antioxidant, on potassium dichromate [K2Cr2O7, a Cr(VI) compound]-induced cytotoxicity and genotoxicity in human blood cells. Erythrocytes were treated with K2Cr2O7, either alone or after incubation with different concentrations of taurine. Treatment of erythrocytes with K2Cr2O7 alone led to marked increase in generation of reactive oxygen and nitrogen species, lipid and protein oxidation. This was accompanied by decrease in total sulfhydryl and glutathione content and lowered antioxidant power of the cells. This suggests that Cr(VI) induces oxidative stress in the cells. Incubation of erythrocytes with taurine prior to addition of K2Cr2O7, resulted in a concentration-dependent decrease in the generation of reactive oxygen and nitrogen species, mitigation of oxidative stress and amelioration of antioxidant power of these cells. It also restored the activities of several metabolic, antioxidant and membrane-bound enzymes. Cr(VI)-induced damage to erythrocyte membrane and lymphocyte DNA was also significantly attenuated by prior administration of taurine. These results suggest that taurine can function as a chemoprotectant against Cr(VI)-induced oxidative injury and can be potentially used to mitigate the toxic effects of this transition metal ion.
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Affiliation(s)
- Nazim Husain
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
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Husain N, Mahmood R. 3,4-Dihydroxybenzaldehyde quenches ROS and RNS and protects human blood cells from Cr(VI)-induced cytotoxicity and genotoxicity. Toxicol In Vitro 2018; 50:293-304. [DOI: 10.1016/j.tiv.2018.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 04/09/2018] [Accepted: 04/11/2018] [Indexed: 01/17/2023]
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Maheshwari N, Khan FH, Mahmood R. 3,4-Dihydroxybenzaldehyde lowers ROS generation and protects human red blood cells from arsenic(III) induced oxidative damage. ENVIRONMENTAL TOXICOLOGY 2018; 33:861-875. [PMID: 29732668 DOI: 10.1002/tox.22572] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) is a potent environmental toxicant and chronic exposure to it results in various malignancies in humans. Oxidative stress has been implicated in the etiopathogenesis of As-induced toxicity. This investigated the protective effect of plant antioxidant 3,4-dihydroxybenzaldehyde (DHB) on sodium meta-arsenite (SA), an As-(III) compound, induced oxidative damage in human red blood cells (RBC). The RBC were first incubated with different concentrations of DHB and then treated with SA at 37°C. Hemolysates were prepared and assayed for various biochemical parameters. Treatment of RBC with SA alone enhanced the generation of reactive oxygen species and increased lipid and protein oxidation. Reduced glutathione levels, total sulfhydryl content and cellular antioxidant power were significantly decreased in SA alone treated RBC, compared to the untreated control cells. This was accompanied by membrane damage, alterations in activities of antioxidant enzymes and deranged glucose metabolism. Incubation of RBC with DHB, prior to treatment with SA, significantly and dose-dependently attenuated the SA-induced changes in all these parameters. Scanning electron microscopy of RBC confirmed these biochemical results. Treatment of RBC with SA alone converted the biconcave discoids to echinocytes but the presence of DHB inhibited this conversion and the RBC retained their normal shape. These results show that DHB protects human RBC from SA-induced oxidative damage, most probably due to its antioxidant character.
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Affiliation(s)
- Nikhil Maheshwari
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, 202002, India
| | - Fahim Halim Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, 202002, India
| | - Riaz Mahmood
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, 202002, India
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Copetti C, Franco FW, Machado EDR, Soquetta MB, Quatrin A, Ramos VDM, Moreira JCF, Emanuelli T, Sautter CK, Penna NG. Acute Consumption of Bordo Grape Juice and Wine Improves Serum Antioxidant Status in Healthy Individuals and Inhibits Reactive Oxygen Species Production in Human Neuron-Like Cells. J Nutr Metab 2018; 2018:4384012. [PMID: 29686894 PMCID: PMC5852837 DOI: 10.1155/2018/4384012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/30/2017] [Indexed: 01/12/2023] Open
Abstract
Few studies investigated the biological effects of American grape cultivars. We investigated the metabolic response after acute consumption of grape juice or wine from Bordo grapes (Vitis labrusca) in a placebo-controlled crossover study with fifteen healthy volunteers. Blood samples were collected 1 hour after the intake of 100 mL of water, juice, or wine to measure TBARS, ABTS, FRAP, glucose, and uric acid levels. To evaluate differences in cellular response, intracellular reactive species production (DCFH-DA) and metabolic mitochondrial viability (MTT) were assessed after exposure of human neuron-like cells (SH-SY5Y) to juice or wine. Glycemia was reduced after juice or wine consumption, whereas blood levels of uric acid were reduced after juice consumption but increased after wine consumption. Juice and wine consumption reduced plasma lipid peroxidation and increased plasma antioxidant capacity (ABTS and FRAP assays). Furthermore, juice inhibited H2O2-induced intracellular production of reactive species (RS) and increased the viability of SH-SY5Y cells. In contrast, wine (dealcoholized) exhibited a per se effect by inducing the production of RS and reducing cell viability. These results indicate a positive impact of acute consumption of Bordo juice and wine on human oxidative status, whereas only juice had protective effects against oxidative stress-induced cytotoxicity.
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Affiliation(s)
- Cristiane Copetti
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Fernanda Wouters Franco
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Eduarda da Rosa Machado
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Marcela Bromberger Soquetta
- Department of Chemical Engineering, Center of Technology, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Andréia Quatrin
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Vitor de Miranda Ramos
- Department of Biochemistry, Center of Oxidative Stress Research (CEEO), Federal University of Rio Grande do Sul (UFRGS), 2600 Ramiro Barcelos Street–Annex, 90035-003 Porto Alegre, RS, Brazil
| | - José Cláudio Fonseca Moreira
- Department of Biochemistry, Center of Oxidative Stress Research (CEEO), Federal University of Rio Grande do Sul (UFRGS), 2600 Ramiro Barcelos Street–Annex, 90035-003 Porto Alegre, RS, Brazil
| | - Tatiana Emanuelli
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Cláudia Kaehler Sautter
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
| | - Neidi Garcia Penna
- Department of Food Technology and Science, Center of Rural Sciences, Federal University of Santa Maria (UFSM), 1000 Roraima Avenue, 97105-900 Santa Maria, RS, Brazil
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Antioxidant, Antimicrobial and Cytotoxic Properties as Well as the Phenolic Content of the Extract from Hancornia speciosa Gomes. PLoS One 2016; 11:e0167531. [PMID: 27907185 PMCID: PMC5132198 DOI: 10.1371/journal.pone.0167531] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/09/2016] [Indexed: 12/26/2022] Open
Abstract
Hancornia speciosa Gomes (Apocynaceae) is a fruit tree, popularly known as mangabeira, and it is widely distributed throughout Brazil. Several parts of the plant are used in folk medicine, and the leaf and bark extracts have anti-inflammatory, antihypertensive, antidiabetic, and antimicrobial properties. In this study, we investigated the chemical composition of the ethanolic extract of Hancornia speciosa leaves (EEHS) and its antioxidant, antimicrobial, and cytotoxic activities as well as the mechanisms involved in cell death. The chemical compounds were identified by liquid chromatography coupled to mass spectrometry (LC-MS/MS). The antioxidant activity of the EEHS was investigated using the method that involves the scavenging of 2,2-diphenyl-1-picrylhydrazyl free radicals as well as the inhibition of oxidative hemolysis and lipid peroxidation induced by 2,2'-azobis (2-amidinopropane) in human erythrocytes. The antimicrobial activity was determined by calculating the minimum inhibitory concentration, minimum bactericidal concentration, minimum fungicidal concentration, and zone of inhibition. Kasumi-1 leukemic cells were used to assess the cytotoxic activity and mechanisms involved in cell death promoted by the EEHS. The chemical compounds identified were quinic acid, chlorogenic acid, catechin, rutin, isoquercitrin, kaempferol-rutinoside, and catechin-pentoside. The EEHS demonstrated antioxidant activity via the sequestration of free radicals, inhibition of hemolysis, and inhibition of lipid peroxidation in human erythrocytes incubated with an oxidizing agent. The antimicrobial activity was observed against American Type Culture Collection (ATCC) and hospital strains of bacteria and fungi, filamentous fungi and dermatophytes. The cytotoxic activity of the EEHS was induced by apoptosis, reduction of the mitochondrial membrane potential, and activation of cathepsins. Together, these results indicate the presence of phenolic compounds and flavonoids in the EEHS and that their antioxidant, antimicrobial, and cytotoxic activities in acute myeloid leukemia cells are mediated by apoptosis.
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Modulation of Erythrocyte Plasma Membrane Redox System Activity by Curcumin. Biochem Res Int 2016; 2016:6025245. [PMID: 26904287 PMCID: PMC4745374 DOI: 10.1155/2016/6025245] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 12/30/2015] [Accepted: 12/31/2015] [Indexed: 01/31/2023] Open
Abstract
Plasma membrane redox system (PMRS) is an electron transport chain system ubiquitously present throughout all cell types. It transfers electron from intracellular substrates to extracellular acceptors for regulation of redox status. Curcumin, isolated from Curcuma longa, has modulatory effects on cellular physiology due to its membrane interaction ability and antioxidant potential. The present study investigates the effect of curcumin on PMRS activity of erythrocytes isolated from Wistar rats in vitro and in vivo and validated through an in silico docking simulation study using Molegro Virtual Docker (MVD). Effects of curcumin were also evaluated on level of glutathione (GSH) and the oxidant potential of plasma measured in terms of plasma ferric equivalent oxidative potentials (PFEOP). Results show that curcumin significantly (p < 0.01) downregulated the PMRS activity in a dose-dependent manner. Molecular docking results suggest that curcumin interacts with amino acids at the active site cavity of cytochrome b 5 reductase, a key constituent of PMRS. Curcumin also increased the GSH level in erythrocytes and plasma while simultaneously decreasing the oxidant potential (PFEOP) of plasma. Altered PMRS activity and redox status are associated with the pathophysiology of several health complications including aging and diabetes; hence, the above finding may explain part of the role of curcumin in health beneficial effects.
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Hyun DH, Lee GH. Cytochrome b5 reductase, a plasma membrane redox enzyme, protects neuronal cells against metabolic and oxidative stress through maintaining redox state and bioenergetics. AGE (DORDRECHT, NETHERLANDS) 2015; 37:122. [PMID: 26611738 PMCID: PMC5005863 DOI: 10.1007/s11357-015-9859-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 11/17/2015] [Indexed: 06/05/2023]
Abstract
The plasma membrane redox system (PMRS) containing NADH-dependent reductases is known to be involved in the maintenance of redox state and bioenergetics. Neuronal cells are very vulnerable to oxidative stress and altered energy metabolism linked to mitochondrial dysfunction. However, the role of the PMRS in these pathways is far from clear. In this study, in order to investigate how cytochrome b5 reductase (b5R), one of the PM redox enzymes, regulates cellular response under stressed conditions, human neuroblastoma cells transfected with b5R were used for viability and mitochondrial functional assays. Cells transfected with b5R exhibited significantly higher levels of the NAD(+)/NADH ratio, consistent with increased levels of b5R activity. Overexpression of b5R made cells more resistant to H2O2 (oxidative stress), 2-deoxyglucose (metabolic stress), rotenone and antimycin A (energetic stress), and lactacystin (proteotoxic stress), but did not protect cells against H2O2 and serum withdrawal. Overexpression of b5R induced higher mitochondrial functions such as ATP production rate, oxygen consumption rate, and activities of complexes I and II, without formation of further reactive oxygen species, consistent with lower levels of oxidative/nitrative damage and resistance to apoptotic cell death. In conclusion, higher NAD(+)/NADH ratio and consequent more efficient mitochondrial functions are induced by the PMRS, enabling them to maintain redox state and energy metabolism under conditions of some energetic stresses. This suggests that b5R can be a target for therapeutic intervention for aging and neurodegenerative diseases.
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Affiliation(s)
- Dong-Hoon Hyun
- Department of Life Science, Ewha Womans University, Seoul, 120-750, South Korea.
| | - Ga-Hyun Lee
- Department of Life Science, Ewha Womans University, Seoul, 120-750, South Korea
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Fatima M, Kesharwani RK, Misra K, Rizvi SI. Protective effect of theaflavin on erythrocytes subjected to in vitro oxidative stress. Biochem Res Int 2013; 2013:649759. [PMID: 24455262 PMCID: PMC3880739 DOI: 10.1155/2013/649759] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 11/18/2022] Open
Abstract
Antioxidant and free radical scavenging effect of black tea theaflavins has been shown in many epidemiological studies. In the present work we report the protective mechanism of tea theaflavins on biomarkers of oxidative stress, which are elevated during stress conditions. We hereby report the in vitro effect of theaflavins on erythrocyte malondialdehyde (MDA), intracellular reduced glutathione (GSH), and plasma membrane redox system (PMRS) of rats. The effect of theaflavin on PMRS has also been validated through an in silico docking simulation study using Molegro Virtual Docker (MVD). We report that theaflavins show significant protection to erythrocyte against oxidative stress induced by tert-butyl hydroperoxide (t-BHP). The findings suggest a possible protective role of theaflavins as antioxidant.
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Affiliation(s)
- Mahejabeen Fatima
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
| | - Rajesh Kumar Kesharwani
- Division of Applied Science & Indo-Russian Center for Biotechnology (IRCB), Indian Institute of Information Technology, Allahabad 211012, India
| | - Krishna Misra
- Division of Applied Science & Indo-Russian Center for Biotechnology (IRCB), Indian Institute of Information Technology, Allahabad 211012, India
| | - Syed Ibrahim Rizvi
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
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