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Niu X, Liu Z, Wang J, Wu D. Green tea EGCG inhibits naïve CD4 + T cell division and progression in mice: An integration of network pharmacology, molecular docking and experimental validation. Curr Res Food Sci 2023; 7:100537. [PMID: 37441168 PMCID: PMC10333431 DOI: 10.1016/j.crfs.2023.100537] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/10/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
Dietary green tea epigallocatechin-3-gallate (EGCG) could attenuate experimental autoimmune encephalomyelitis via the modification of the balance of CD4+ T helper (Th) cells. Moreover, EGCG administration in vitro has a direct impact on the regulatory cytokines and differentiation of CD4+ T cells. Here, we aim to determine whether EGCG directly affects the cell division and progression in naive CD4+ T cells. We first investigate the effect of EGCG on naïve CD4+ T cell division and progression in vitro. An integrated analysis of network pharmacology and molecular docking was utilized to further identify the targets of EGCG for T cell-mediated autoimmune diseases and multiple sclerosis (MS). EGCG treatment prevented naïve CD4+ T cells from progressing through the cell cycle when stimulated with anti-CD3/CD28 antibodies. This was achieved by increasing the proportion of cells arrested in the G0/G1 phase by 8.6% and reducing DNA synthesis activity by 51% in the S phase. Furthermore, EGCG treatment inhibited the expression of cyclins (cyclin D1, cyclin D3, cyclin A, and cyclin B1) and CDKs (CDK2 and CDK6) during naïve CD4+ T cell activation in response to anti-CD3/CD28 stimulation. However, EGCG inhibited the decrease of P27Kip1 (CDKN1B) during naïve CD4+ T cell activation, whereas it inhibited the increase of P21Cip1 (CDKN1A) expression 48 h after mitogenic stimulation. The molecular docking analysis confirmed that these proteins (CD4, CCND1, and CDKN1A) are the primary targets for EGCG, T cell-mediated autoimmune diseases, and MS. Finally, target enrichment analysis indicated that EGCG may affect the cell cycle, T cell receptor signaling pathway, Th cell differentiation, and NF-κB signaling pathway. These findings reveal a crucial role of EGCG in the division and progression of CD4+ T cells, and underscore other potential targets of EGCG in T cell-mediated autoimmune diseases such as MS.
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Affiliation(s)
- Xinli Niu
- Translational Medical Center, Huaihe Hospital of Henan University, Kaifeng, 475000, China
- College of Life Science, Henan University, Kaifeng, 475000, China
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, 02111, USA
| | - Zejin Liu
- Translational Medical Center, Huaihe Hospital of Henan University, Kaifeng, 475000, China
| | - Junpeng Wang
- Translational Medical Center, Huaihe Hospital of Henan University, Kaifeng, 475000, China
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, 02111, USA
| | - Dayong Wu
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, 02111, USA
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Chen W, Liu M, Yang H, Nezamzadeh-Ejhieh A, Lu C, Pan Y, Liu J, Bai Z. Recent Advances of Fe(III)/Fe(II)-MPNs in Biomedical Applications. Pharmaceutics 2023; 15:pharmaceutics15051323. [PMID: 37242566 DOI: 10.3390/pharmaceutics15051323] [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: 02/20/2023] [Revised: 04/11/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
Metal-phenolic networks (MPNs) are a new type of nanomaterial self-assembled by metal ions and polyphenols that have been developed rapidly in recent decades. They have been widely investigated, in the biomedical field, for their environmental friendliness, high quality, good bio-adhesiveness, and bio-compatibility, playing a crucial role in tumor treatment. As the most common subclass of the MPNs family, Fe-based MPNs are most frequently used in chemodynamic therapy (CDT) and phototherapy (PTT), where they are often used as nanocoatings to encapsulate drugs, as well as good Fenton reagents and photosensitizers to improve tumor therapeutic efficiency substantially. In this review, strategies for preparing various types of Fe-based MPNs are first summarized. We highlight the advantages of Fe-based MPNs under the different species of polyphenol ligands for their application in tumor treatments. Finally, some current problems and challenges of Fe-based MPNs, along with a future perspective on biomedical applications, are discussed.
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Affiliation(s)
- Weipeng Chen
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523700, China
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Miao Liu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Hanping Yang
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | | | - Chengyu Lu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Ying Pan
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523700, China
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Jianqiang Liu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
- Affiliated Hospital of Guangdong Medical University, Zhanjiang 524013, China
| | - Zhi Bai
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523700, China
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He Z, Luo H, Wang Z, Chen D, Feng Q, Cao X. Injectable and tissue adhesive EGCG-laden hyaluronic acid hydrogel depot for treating oxidative stress and inflammation. Carbohydr Polym 2023; 299:120180. [PMID: 36876795 DOI: 10.1016/j.carbpol.2022.120180] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 12/12/2022]
Abstract
Oxidative stress and inflammation are common pathological mechanisms for the progression of tissue degeneration. Epigallocatechin-3-gallate (EGCG) features antioxidant and anti-inflammatory properties, which is a promising drug for the treatment of tissue degeneration. Herein, we utilize the phenylborate ester reaction of EGCG and phenylboronic acid (PBA) to fabricate an injectable and tissue adhesive EGCG-laden hydrogel depot (EGCG HYPOT), which can achieve anti-inflammatory and antioxidative effects via smart delivery of EGCG. Specifically, the phenylborate ester bonds, formed by EGCG and PBA-modified methacrylated hyaluronic acid (HAMA-PBA), endow EGCG HYPOT injectability, shape adaptation and efficient load of EGCG. After photo-crosslinking, EGCG HYPOT exhibits good mechanical properties, tissue adhesion and sustained acid-responsive release of EGCG. EGCG HYPOT can scavenge oxygen and nitrogen free radicals. Meanwhile, EGCG HYPOT can scavenge intracellular reactive oxygen species (ROS) and suppress the expression of pro-inflammatory factors. EGCG HYPOT may provide a new idea for alleviation of inflammatory disturbance.
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Affiliation(s)
- Zhichao He
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), South China University of Technology, Guangzhou 510006, PR China; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, PR China
| | - Huitong Luo
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), South China University of Technology, Guangzhou 510006, PR China
| | - Zetao Wang
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), South China University of Technology, Guangzhou 510006, PR China; Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing JiShuiTan Hospital, Beijing 100035, PR China
| | - Qi Feng
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), South China University of Technology, Guangzhou 510006, PR China; Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, PR China.
| | - Xiaodong Cao
- Department of Biomedical Engineering, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, PR China; National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), South China University of Technology, Guangzhou 510006, PR China; Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510641, PR China.
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Rhabdomyolysis-induced acute kidney injury and concomitant apoptosis induction via ROS-mediated ER stress is efficaciously counteracted by epigallocatechin gallate. J Nutr Biochem 2022; 110:109134. [PMID: 36028100 DOI: 10.1016/j.jnutbio.2022.109134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 01/13/2023]
Abstract
Rhabdomyolysis induced acute kidney injury (RIAKI) is a life-threatening condition responsible for approximately 19-58% of AKI cases worldwide. We performed an intramuscular injection of glycerol (10 mL/kg) in male wistar rats to induce AKI. Epigallocatechin gallate (EGCG) was administered for 3 consecutive days to evaluate its protective effects. We observed significant downregulation in serum creatinine, blood urea nitrogen (BUN) and LDH at different time points on EGCG treatment groups in a dose-dependent manner. Similarly, H&E staining also revealed that EGCG was able to reduce the formation of damaged tubules and tubular necrosis which was prominently spread throughout the kidney tissue of glycerol treatment group. Concomitantly, we observed upregulated inflammation, ER stress and elevated oxidative stress in the glycerol treated group only, which was significantly normalized upon EGCG treatment in both in vitro and in vivo studies. The occurrence of apoptosis in kidney tubules was found to be relatively higher in glycerol treated group and H2O2 treated HEK-293 cells. The results obtained after EGCG treatment revealed a significant decrease in apoptotic cell population, which was further validated by immunofluorescence staining against p53 and comet assay in HEK-293 cells and p53 IHC in kidney tissues. Western blotting also revealed a systemic downregulation of intrinsic mitochondrial apoptotic pathway markers such as bax, bcl-2, pro and cleaved caspase 3, caspase 9 and PARP1. Additionally, the results for flow cytometry analysis and TUNEL assay corroborated apoptotic equilibrium. Conclusively, we reckon EGCG as a multi-therapeutic natural product that can be used the for treatment of AKI.
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Barberino RS, Lins TLBG, Monte APO, Silva RLS, Andrade KO, Campinho DSP, Palheta Junior RC, Smitz JEJ, Matos MHT. Epigallocatechin-3-gallate attenuates cyclophosphamide-induced damage in mouse ovarian tissue via suppressing inflammation, apoptosis, and expression of phosphorylated Akt, FOXO3a and rpS6. Reprod Toxicol 2022; 113:42-51. [PMID: 35981663 DOI: 10.1016/j.reprotox.2022.08.010] [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: 12/23/2021] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 11/30/2022]
Abstract
This study was conducted to evaluate the protective effects of epigallocatechin-3-gallate (EGCG) against ovarian toxicity in cyclophosphamide-treated mice and to verify the possible involvement of phosphorylated Akt, FOXO3a and rpS6 in the EGCG actions. Mice received saline solution (i.p.; control) or a single dose of cyclophosphamide (200 mg/kg body weight, i.p.) or mice were pretreated with N-acetylcysteine (150 mg/kg body weight, i.p.; positive control) or with EGCG (5, 25 or 50 mg/kg body weight, i.p.) once daily for three days followed by injection with single dose of cyclophosphamide (200 mg/kg body weight, i.p.). Thereafter, the mice were euthanized, and the ovaries were harvested and destined to histological (follicular morphology and activation), immunohistochemistry (cleaved caspase-3 and TNF-α) and fluorescence (mitochondrial activity and GSH concentrations) analyses. Furthermore, we examined the participation of p-Akt, p-FOXO3a and p-rpS6 in the protective effects of EGCG in cyclophosphamide-induced ovarian damage by immunohistochemical staining. The results showed that pretreatment with N-acetylcysteine or EGCG at 25 and 50 mg/kg before cyclophosphamide administration preserved the normal follicular morphology, prevented primordial follicle loss, reduced atresia, inflammation, and mitochondrial damage, and increased GSH concentrations compared to the only cyclophosphamide treatment. Additionally, pretreatment with 25 mg/kg EGCG regulated phosphorylated Akt, FOXO3a and rpS6 after cyclophosphamide treatment. In conclusion, short-time pretreatment with 25 mg/kg EGCG can prevent follicle loss in cyclophosphamide-treated mice by reducing oxidative damage, inflammation, and apoptosis, and regulating of p-Akt, p-FOXO3a and p-rpS6.
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Affiliation(s)
- Ricássio S Barberino
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil.
| | - Thae Lanne B G Lins
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Alane P O Monte
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Regina Lucia S Silva
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Kíscyla O Andrade
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Daniela S P Campinho
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Raimundo C Palheta Junior
- Laboratory of Veterinary Pharmacology, Department of Veterinary Medicine, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
| | - Johan E J Smitz
- Follicle Biology Laboratory, Free University Brussels - VUB, Brussels, Belgium
| | - Maria Helena T Matos
- Nucleus of Biotechnology Applied to Ovarian Follicle Development, Federal University of São Francisco Valley - UNIVASF, Petrolina, Brazil
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Pradhan A, Sengupta S, Sengupta R, Chatterjee M. Attenuation of methotrexate induced hepatotoxicity by epigallocatechin 3-gallate. Drug Chem Toxicol 2022:1-9. [PMID: 35698845 DOI: 10.1080/01480545.2022.2085738] [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: 11/03/2022]
Abstract
Methotrexate (MTX) is currently used as first-line therapy for autoimmune diseases like rheumatoid arthritis, psoriasis, and systemic lupus erythematous. However, its use is limited by its hepatotoxic potential. Epigallocatechin-3-gallate (EGCG), an abundant catechin present in tea possesses potent antioxidant activity and effectively ameliorates oxidative stress-related disorders. This study aimed to investigate the hepatoprotective influence of EGCG in a MTX-induced rat model of hepatotoxicity. Sprague Dawley rats pretreated with EGCG (40 mg kg-1 b.w., p.o.) were administered a single dose of MTX (20 mg kg-1 b.w., i.p.) and its hepatoprotective efficacy compared with folic acid (1 mg kg-1 b.w., i.p.). On day 10, blood samples were collected to determine plasma levels of aspartate aminotransferase (AST), alanine transaminase (ALT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH), while the livers were examined for histopathogical changes along with levels of oxidative stress measured in terms of myeloperoxidase (MPO) activity, protein carbonylation (PCO), lipid peroxidation (LPO), and activities of cellular enzymatic antioxidants - superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx). MTX significantly increased the plasma levels of AST, ALT, ALP, and LDH, which were prevented by pretreatment with EGCG, and was corroborated by histopathology. Additionally, MTX-induced hepatic oxidative stress as measured by increased generation of MPO, enhanced PCO, LPO, and decreased activities of antioxidant enzymes was mitigated by pretreatment with EGCG. The amelioration of MTX-induced hepatotoxicity by EGCG endorsed the inclusion of an anti-oxidant during chronic administration of MTX.
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Affiliation(s)
- Ayan Pradhan
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research (IPGME&R), Kolkata, India
| | - Shilpa Sengupta
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research (IPGME&R), Kolkata, India
| | - Ritika Sengupta
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research (IPGME&R), Kolkata, India
| | - Mitali Chatterjee
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research (IPGME&R), Kolkata, India
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Exploration of molecular mechanisms responsible for anti-inflammatory and anti-angiogenic attributes of methanolic extract of Viola betonicifolia. Inflammopharmacology 2022; 30:1459-1474. [PMID: 35608743 DOI: 10.1007/s10787-022-00990-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 04/02/2022] [Indexed: 11/05/2022]
Abstract
Uncontrolled inflammation plays a central role in the pathogenesis of various diseases. Currently available anti-inflammatory agents on prolonged use may lead to ulcers or thrombus formation. The present study was designed to evaluate the anti-inflammatory, anti-arthritic and anti-angiogenic potentials of methanol extract of Viola betonicifolia using battery of in vivo models. Methanol extract of Viola betonicifolia (Vb.Me) was prepared through maceration. High performance liquid chromatography (HPLC) and gas chromatography mass spectrometery (GC-MS) were performed to identify bioactive compounds present in Vb.Me. In vivo safety profile of Vb.Me was evaluated following OECD 425 acute toxicity guidelines. Anti-inflammatory potential of Vb.Me at three different dose levels was evaluated in in vivo acute (carrageenan and, histamine-induced paw oedema), sub-chronic (cotton pellet-induced granuloma) and chronic (Complete Freund's adjuvant-induced arthritis) models. Blood and paws samples were collected to study effects of Vb.Me treatment on the expression of various pro- and anti-inflammatory genes (RT-PCR) and to study the histopathological changes at tissue levels. Effects of Vb.Me on neovasculature development were studied in ex-ovo chicken chorioallantoic membrane (CAM) assay. Quercetin and n-hexadecanoic were identified as one of the major bioactive molecules in HPLC and GC-MS analysis of Vb.Me. Toxicity data revealed that Vb.Me was safe for administration up to the dose of 2000 mg/kg. Findings of inflammatory models showed that Vb.Me produced time and dose-dependent effects. 500 mg/kg Vb.Me showed significantly (p < 0.05) better effects as compared with 125 and 250 mg/kg. 500 mg/kg Vb.Me also showed comparable anti-inflammatory effects with indomethacin in both acute and chronic models respectively. RT-PCR data exhibited significant (p < 0.05) down-regulation of IL-6, IL-1ß, NF-kß, TNF-α and COX-2 genes with simultaneous up-regulation of IL-4 and IL-10 genes in the blood samples of animals treated with 500 mg/kg of Vb.Me and 10 mg/kg of indomethacin respectively. CAM assay data revealed arrest of microvessel outgrowth in Vb.Me-treated eggs. Altogether, findings of the current study indicate that Vb.Me exerts in vivo anti-inflammatory and anti-angiogenic effects through regulation of expression of various pro- and anti-inflammatory genes. Synergist actions of various bioactive molecules in Vb.Me are proposed to be responsible for these attributes. However, further studies to standardize the extract and evaluation of its potential in various inflammation-induced diseases are warranted.
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Guerreiro Í, Ferreira-Pêgo C, Carregosa D, Santos CN, Menezes R, Fernandes AS, Costa JG. Polyphenols and Their Metabolites in Renal Diseases: An Overview. Foods 2022; 11:foods11071060. [PMID: 35407148 PMCID: PMC8997953 DOI: 10.3390/foods11071060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 12/12/2022] Open
Abstract
Kidney diseases constitute a worldwide public health problem, contributing to morbidity and mortality. The present study aimed to provide an overview of the published data regarding the potential beneficial effects of polyphenols on major kidney diseases, namely acute kidney injury, chronic kidney disease, diabetic nephropathy, renal cancer, and drug-induced nephrotoxicity. This study consists of a bibliographical review including in vitro and in vivo studies dealing with the effects of individual compounds. An analysis of the polyphenol metabolome in human urine was also conducted to estimate those compounds that are most likely to be responsible for the kidney protective effects of polyphenols. The biological effects of polyphenols can be highly attributed to the modulation of specific signaling cascades including those involved in oxidative stress responses, anti-inflammation processes, and apoptosis. There is increasing evidence that polyphenols afford great potential in renal disease protection. However, this evidence (especially when in vitro studies are involved) should be considered with caution before its clinical translation, particularly due to the unfavorable pharmacokinetics and extensive metabolization that polyphenols undergo in the human body. Future research should consider polyphenols and their metabolites that indeed reach kidney tissues.
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Affiliation(s)
- Íris Guerreiro
- CBIOS—Universidade Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal; (Í.G.); (C.F.-P.); (R.M.); (A.S.F.)
| | - Cíntia Ferreira-Pêgo
- CBIOS—Universidade Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal; (Í.G.); (C.F.-P.); (R.M.); (A.S.F.)
| | - Diogo Carregosa
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056 Lisboa, Portugal; (D.C.); (C.N.S.)
| | - Cláudia N. Santos
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056 Lisboa, Portugal; (D.C.); (C.N.S.)
| | - Regina Menezes
- CBIOS—Universidade Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal; (Í.G.); (C.F.-P.); (R.M.); (A.S.F.)
- CEDOC, Chronic Diseases Research Center, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056 Lisboa, Portugal; (D.C.); (C.N.S.)
- iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901 Oeiras, Portugal
| | - Ana S. Fernandes
- CBIOS—Universidade Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal; (Í.G.); (C.F.-P.); (R.M.); (A.S.F.)
| | - João G. Costa
- CBIOS—Universidade Lusófona’s Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal; (Í.G.); (C.F.-P.); (R.M.); (A.S.F.)
- Correspondence:
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El-Far YM, El-Mesery M. Pevonedistat attenuates cisplatin-induced nephrotoxicity in mice by downregulating the release of inflammatory mediators. J Biochem Mol Toxicol 2021; 35:e22908. [PMID: 34476871 DOI: 10.1002/jbt.22908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 07/09/2021] [Accepted: 08/20/2021] [Indexed: 01/11/2023]
Abstract
Pevonedistat (MLN4924) is a specific NEDD8-activating enzyme inhibitor that inactivates cullin-RING ligases involved in ubiquitylation and turnover of different signaling molecules. In the current study, we evaluated the effect of pevonedistat on cisplatin (CIS)-induced nephrotoxicity in mice. Serum creatinine and urea levels were analyzed in different groups. Histopathological examination of renal tissue was done using hematoxylin and eosin staining. In addition, renal IL-6 and TNF-α expressions were analyzed using the enzyme-linked immunosorbent assay technique, and IL-1β and NF-κB expressions were analyzed by immunohistochemical staining of renal tissue. Caspase-3, A20, β-catenin, and Nrf2 gene expressions in renal tissue were analyzed using the reverse-transcription polymerase chain reaction technique. Western blot analysis was adopted to assess cleaved caspase-3 and β-catenin expressions in renal tissue. Pevonedistat coadministration with CIS improved kidney functions and attenuated CIS-induced nephrotoxicity as indicated by the significant decrease in serum creatinine and urea levels. In addition, pevonedistat coadministration with CIS showed a significant decrease in caspase-3 and a significant increase in A20, β-catenin, and Nrf2 gene expressions. Also, pevonedistat decreased caspase-3 cleavage to p19 in mice treated with CIS. Moreover, pevonedistat decreased CIS-induced upregulation of IL-6, TNF-α, IL-1β, and NF-κB protein expressions in renal tissue. Thus, pevonedistat alleviated CIS-induced nephrotoxicity that might be attributed to suppression of the inflammation induced in renal tissue.
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Affiliation(s)
- Yousra M El-Far
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mohamed El-Mesery
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Blockade of RANKL/RANK signaling pathway by epigallocatechin gallate alleviates mast cell-mediated inflammatory reactions. Int Immunopharmacol 2020; 88:106872. [DOI: 10.1016/j.intimp.2020.106872] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 12/29/2022]
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Dai W, Lou N, Xie D, Hu Z, Song H, Lu M, Shang D, Wu W, Peng J, Yin P, Lin Z. N-Ethyl-2-Pyrrolidinone-Substituted Flavan-3-Ols with Anti-inflammatory Activity in Lipopolysaccharide-Stimulated Macrophages Are Storage-Related Marker Compounds for Green Tea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12164-12172. [PMID: 33074673 DOI: 10.1021/acs.jafc.0c03952] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fresh green tea (GT) is commonly considered to have better sensory flavor and higher commercial value than long-term-stored GT; however, the chemical variations during storage are unclear. In this study, the chemical profiles of stored GT were surveyed among time-series samples from 0 to 19 months using a nontargeted metabolomics method. Seven N-ethyl-2-pyrrolidinone-substituted flavan-3-ols (EPSFs) increased from 0.022 ± 0.019 to 3.212 ± 0.057 mg/g within 19 months (correlation coefficients with storage duration ranging from 0.936 to 0.965), and they were the most significantly increased compounds among the 127 identified compounds. Two representative EPSFs (R-EGCG-cThea and S-EGCG-cThea) possess potential anti-inflammatory properties by suppressing the expression, phosphorylation, and nuclear translocation of nuclear factor kappa-B (NF-κB) p65 in lipopolysaccharide-stimulated macrophages based on western blotting and immunofluorescence results. In conclusion, EPSFs were found to be marker compounds for stored GT and showed potential anti-inflammatory activity by regulating the NF-κB signaling pathway.
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Affiliation(s)
- Weidong Dai
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Ni Lou
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Dongchao Xie
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Zhengyan Hu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, People's Republic of China
| | - Huiyi Song
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Meiling Lu
- Agilent Technologies (China) Limited, Beijing 100102, People's Republic of China
| | - Dong Shang
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Wenliang Wu
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Jiakun Peng
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
| | - Peiyuan Yin
- Clinical Laboratory of Integrative Medicine, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, People's Republic of China
- College of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116044, People's Republic of China
| | - Zhi Lin
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, People's Republic of China
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12
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Protective Effects of Epigallocatechin Gallate (EGCG) on Endometrial, Breast, and Ovarian Cancers. Biomolecules 2020; 10:biom10111481. [PMID: 33113766 PMCID: PMC7694163 DOI: 10.3390/biom10111481] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023] Open
Abstract
Green tea and its major bioactive component, (-)-epigallocatechin gallate (EGCG), possess diverse biological properties, particularly antiproliferation, antimetastasis, and apoptosis induction. Many studies have widely investigated the anticancer and synergistic effects of EGCG due to the side effects of conventional cytotoxic agents. This review summarizes recent knowledge of underlying mechanisms of EGCG on protective roles for endometrial, breast, and ovarian cancers based on both in vitro and in vivo animal studies. EGCG has the ability to regulate many pathways, including the activation of nuclear factor erythroid 2-related factor 2 (Nrf2), inhibition of nuclear factor-κB (NF-κB), and protection against epithelial-mesenchymal transition (EMT). EGCG has also been found to interact with DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), which affect epigenetic modifications. Finally, the action of EGCG may exert a suppressive effect on gynecological cancers and have beneficial effects on auxiliary therapies for known drugs. Thus, future clinical intervention studies with EGCG will be necessary to more and clear evidence for the benefit to these cancers.
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13
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In Vitro Characterization, Modelling, and Antioxidant Properties of Polyphenon-60 from Green Tea in Eudragit S100-2 Chitosan Microspheres. Nutrients 2020; 12:nu12040967. [PMID: 32244441 PMCID: PMC7230985 DOI: 10.3390/nu12040967] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 12/12/2022] Open
Abstract
Eudragit S100-coated chitosan microspheres (S100Ch) are proposed as a new oral delivery system for green tea polyphenon-60 (PP60). PP60 is a mixture of polyphenolic compounds, known for its active role in decreasing oxidative stress and metabolic risk factors involved in diabetes and in other chronic diseases. Chitosan-PP60 microspheres prepared by an emulsion cross-linking method were coated with Eudragit S100 to ensure the release of PP60 in the terminal ileum. Different core–coat ratios of Eudragit and chitosan were tested. Optimized chitosan microspheres were obtained with a chitosan:PP60 ratio of 8:1 (Ch-PP608:1), rotation speed of 1500 rpm, and surfactant concentration of 1.0% (m/v) achieving a mean size of 7.16 µm. Their coating with the enteric polymer (S100Ch-PP60) increased the mean size significantly (51.4 µm). The in vitro modified-release of PP60 from S100Ch-PP60 was confirmed in simulated gastrointestinal conditions. Mathematical fitting models were used to characterize the release mechanism showing that both Ch-PP608:1 and S100Ch-PP60 fitted the Korsmeyers–Peppas model. The antioxidant activity of PP60 was kept in glutaraldehyde-crosslinked chitosan microspheres before and after their coating, showing an IC50 of 212.3 µg/mL and 154.4 µg/mL, respectively. The potential of chitosan microspheres for the delivery of catechins was illustrated, with limited risk of cytotoxicity as shown in Caco-2 cell lines using the 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The beneficial effects of green tea and its derivatives in the management of metabolic disorders can be exploited using mucoadhesive chitosan microspheres coated with enteric polymers for colonic delivery.
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14
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Ren Z, Sun S, Sun R, Cui G, Hong L, Rao B, Li A, Yu Z, Kan Q, Mao Z. A Metal-Polyphenol-Coordinated Nanomedicine for Synergistic Cascade Cancer Chemotherapy and Chemodynamic Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906024. [PMID: 31834662 DOI: 10.1002/adma.201906024] [Citation(s) in RCA: 231] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/12/2019] [Indexed: 05/11/2023]
Abstract
The clinical application of chemotherapy is impeded by the unsatisfactory efficacy and severe side effects. Chemodynamic therapy (CDT) has emerged as an efficient strategy for cancer treatment utilizing Fenton chemistry to destroy cancer cells by converting endogenous H2 O2 into highly toxic reactive oxygen species. Apart from the chemotherapeutic effect, cisplatin is able to act as an artificial enzyme to produce H2 O2 for CDT through cascade reactions, thus remarkably improving the anti-tumor outcomes. Herein, an organic theranostic nanomedicine (PTCG NPs) is constructed with high loading capability using epigallocatechin-3-gallate (EGCG), phenolic platinum(IV) prodrug (Pt-OH), and polyphenol modified block copolymer (PEG-b-PPOH) as the building blocks. The high stability of PTCG NPs during circulation stems from their strong metal-polyphenol coordination interactions, and efficient drug release is realized after cellular internalization. The activated cisplatin elevates the intracellular H2 O2 level through cascade reactions. This is further utilized to produce highly toxic reactive oxygen species catalyzed by an iron-based Fenton reaction. In vitro and in vivo investigations demonstrate that the combination of chemotherapy and chemodynamic therapy achieves excellent anticancer efficacy. Meanwhile, systemic toxicity faced by platinum-based drugs is avoided through this nanoformulation. This work provides a promising strategy to develop advanced nanomedicine for cascade cancer therapy.
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Affiliation(s)
- Zhigang Ren
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Shichao Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Ranran Sun
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Guangying Cui
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Liangjie Hong
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Benchen Rao
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Ang Li
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zujiang Yu
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Quancheng Kan
- Department of Infectious Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Gene Hospital of Henan Province, Precision Medicine Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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15
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Kanlaya R, Thongboonkerd V. Molecular Mechanisms of Epigallocatechin-3-Gallate for Prevention of Chronic Kidney Disease and Renal Fibrosis: Preclinical Evidence. Curr Dev Nutr 2019; 3:nzz101. [PMID: 31555758 PMCID: PMC6752729 DOI: 10.1093/cdn/nzz101] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/28/2019] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease (CKD) is a common public health problem worldwide characterized by gradual decline of renal function over months/years accompanied by renal fibrosis and failure in tissue wound healing after sustained injury. Patients with CKD frequently present with profound signs/symptoms that require medical treatment, mostly culminating in hemodialysis and renal transplantation. To prevent CKD more efficiently, there is an urgent need for better understanding of the pathogenic mechanisms and molecular pathways of the disease pathogenesis and progression, and for developing novel therapeutic targets. Recently, several lines of evidence have shown that epigallocatechin-3-gallate (EGCG), an abundant phytochemical polyphenol derived from Camellia sinensis, might be a promising bioactive compound for prevention of CKD development/progression. This review summarizes current knowledge of molecular mechanisms underlying renoprotective roles of EGCG in CKD based on available preclinical evidence (from both in vitro and in vivo animal studies), particularly its antioxidant property through preservation of mitochondrial function and activation of Nrf2 (nuclear factor erythroid 2-related factor 2)/HO-1 (heme oxygenase-1) signaling, anti-inflammatory activity, and protective effect against epithelial mesenchymal transition. Finally, future perspectives, challenges, and concerns regarding its clinical use in CKD and renal fibrosis are discussed.
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Affiliation(s)
- Rattiyaporn Kanlaya
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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16
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Ibrahim MA, Bakhaat GA, Tammam HG, Mohamed RM, El-Naggar SA. Cardioprotective effect of green tea extract and vitamin E on Cisplatin-induced cardiotoxicity in mice: Toxicological, histological and immunohistochemical studies. Biomed Pharmacother 2019; 113:108731. [DOI: 10.1016/j.biopha.2019.108731] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 02/16/2019] [Accepted: 02/22/2019] [Indexed: 02/01/2023] Open
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17
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Kanlaya R, Thongboonkerd V. Protective Effects of Epigallocatechin-3-Gallate from Green Tea in Various Kidney Diseases. Adv Nutr 2019; 10:112-121. [PMID: 30615092 PMCID: PMC6370267 DOI: 10.1093/advances/nmy077] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/12/2018] [Indexed: 12/12/2022] Open
Abstract
Kidney diseases are common health problems worldwide. Various etiologies (e.g., diabetes, hypertension, drug-induced nephrotoxicity, infection, cancers) can affect renal function and ultimately lead to development of chronic kidney disease (CKD) and end-stage renal disease (ESRD). The global rise in number of CKD/ESRD patients during recent years has led to tremendous concern to look for effective strategies to prevent or slow progression of CKD and ESRD. Natural compounds derived from herbs or medicinal plants have gained wide attention for scientific scrutiny to achieve such goals. One of such natural compounds that has been extensively investigated is epigallocatechin-3-gallate (EGCG), a major polyphenol found in the tea plant (Camellia sinensis). A growing body of recent evidence has shown that EGCG may be a promising therapeutic or protective agent in various kidney diseases. This article thus highlights recent progress in medical research on beneficial effects of EGCG against a broad spectrum of kidney diseases, including acute kidney injury, cisplatin-induced nephrotoxicity, kidney stone disease, glomerulonephritis, lupus nephritis, renal cell carcinoma, diabetic nephropathy, CKD, and renal fibrosis. The renoprotective mechanisms are also detailed. Finally, future perspectives of medical research on EGCG and its potential use in clinical practice for treatment and prevention of kidney diseases are discussed.
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Affiliation(s)
- Rattiyaporn Kanlaya
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand,Address correspondence to VT (e-mail: or )
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18
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Gómez-Sierra T, Eugenio-Pérez D, Sánchez-Chinchillas A, Pedraza-Chaverri J. Role of food-derived antioxidants against cisplatin induced-nephrotoxicity. Food Chem Toxicol 2018; 120:230-242. [DOI: 10.1016/j.fct.2018.07.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/22/2018] [Accepted: 07/06/2018] [Indexed: 12/21/2022]
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19
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Bae KH, Tan S, Yamashita A, Ang WX, Gao SJ, Wang S, Chung JE, Kurisawa M. Hyaluronic acid-green tea catechin micellar nanocomplexes: Fail-safe cisplatin nanomedicine for the treatment of ovarian cancer without off-target toxicity. Biomaterials 2017; 148:41-53. [DOI: 10.1016/j.biomaterials.2017.09.027] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/20/2017] [Accepted: 09/22/2017] [Indexed: 10/18/2022]
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20
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Li KK, Peng JM, Zhu W, Cheng BH, Li CM. Gallocatechin gallate (GCG) inhibits 3T3-L1 differentiation and lipopolysaccharide induced inflammation through MAPK and NF-κB signaling. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.01.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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21
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Heidari-Soreshjani S, Asadi-Samani M, Yang Q, Saeedi-Boroujeni A. Phytotherapy of nephrotoxicity-induced by cancer drugs: an updated review. J Nephropathol 2017; 6:254-263. [PMID: 28975109 PMCID: PMC5607991 DOI: 10.15171/jnp.2017.41] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 01/27/2017] [Indexed: 12/15/2022] Open
Abstract
Context:
Kidney is one of the vital organs maintaining homeostasis of body and thus
dysfunction of kidney affects quality of life and health severely. Anticancer drugs,
particularly chemotherapeutic agents, cause high toxicity leading kidney dysfunction
and irreparable kidney injury. Therefore, attention has recently been paid to seeking out
alternatives such as nature-based drugs that are effective but less toxic. In this regard, this
systematic review article is to report and introduce the most important medicinal plants
and their derivatives that are used to reduce anticancer drug-induced nephrotoxicity.
Evidence Acquisitions: The word nephrotoxicity alongside the words cancer or chemotherapy
in combination with some herbal terms such as medicinal plant, plants, herbs, and extracts
were administered to search for relevant publications indexed in PubMed.
Results:
According to this study, 16 medicinal plants, 12 plant-based derivatives, and three
traditional plant-based formulations were found to help control and modulate anticancer
drug-induced nephrotoxicity indices.
Conclusions:
Anticancer drugs cause nephrotoxicity through activating pathways of oxidative
stress, damage-associated molecular patterns (DAMPs) production, inflammatory
processes, and cell apoptosis, while medicinal plants and their derivatives can cause
reduction in nephrotoxicity and anticancer drugs side effects via their antioxidant and
anti-inflammatory properties.
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Affiliation(s)
| | - Majid Asadi-Samani
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Qian Yang
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - Ali Saeedi-Boroujeni
- Department of Immunology, School of Medicine, Jundishapur University of Medical Sciences, Ahvaz, Iran
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22
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Structural Change in Microbiota by a Probiotic Cocktail Enhances the Gut Barrier and Reduces Cancer via TLR2 Signaling in a Rat Model of Colon Cancer. Dig Dis Sci 2016; 61:2908-2920. [PMID: 27384052 DOI: 10.1007/s10620-016-4238-7] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 06/21/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Structural change in the gut microbiota is implicated in cancer. The beneficial modulation of the microbiota composition with probiotics and prebiotics prevents diseases. AIM We investigated the effect of oligofructose-maltodextrin-enriched Lactobacillus acidophilus, Bifidobacteria bifidum, and Bifidobacteria infantum (LBB), on the gut microbiota composition and progression of colorectal cancer. METHODS Sprague Dawley rats were acclimatized, given ampicillin (75 mg/kg), and treated as follows; GCO: normal control; GPR: LBB only; GPC: LBB+ 1,2-dimethylhydrazine dihydrochloride (DMH); and GCA: DMH only (cancer control). 16S V4 Pyrosequencing for gut microbiota analysis, tumor studies, and the expression of MUC2, ZO-1, occludin, TLR2, TLR4, caspase 3, COX-2, and β-catenin were conducted at the end of experiment. RESULTS Probiotic LBB treatment altered the gut microbiota. The relative abundance of genera Pseudomonas, Congregibacter, Clostridium, Candidactus spp., Phaeobacter, Escherichia, Helicobacter, and HTCC was decreased (P < 0.05), but the genus Lactobacillus increased (P < 0.05), in LBB treatment than in cancer control. The altered gut microbiota was associated with decreased tumor incidence (80 % in GPC vs. 100 % in GCA, P = 0.0001), tumor volume (GPC 84.23 (42.75-188.4) mm(3) vs. GCA 243 (175.5-344.5) mm(3), P < 0.0001) and tumor multiplicity/count (GPC 2.92 ± 0.26 vs. GCA 6.27 ± 0.41; P < 0.0001). The expression of MUC2, ZO-1, occludin, and TLR2 was increased, but expression of TLR4, caspase 3, Cox-2, and β-catenin was decreased by LBB treatment than in cancer control GCA (P < 0.05). CONCLUSION Administration of LBB modulates the gut microbiota and reduces colon cancer development by decreasing tumor incidence, multiplicity/count, and volume via enhanced TLR2-improved gut mucosa epithelial barrier integrity and suppression of apoptosis and inflammation.
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23
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Bao H, Peng A. The Green Tea Polyphenol(-)-epigallocatechin-3-gallate and its beneficial roles in chronic kidney disease. J Transl Int Med 2016; 4:99-103. [PMID: 28191529 DOI: 10.1515/jtim-2016-0031] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Chronic kidney disease (CKD), a condition that affects around 10% of the population, has become a significant public health concern. Current therapeutic strategies to slow down the progression of CKD remain limited. Thus, it is urgent to develop new strategies to manage the patients with CKD. Work within the past decade has improved our understanding of the mechanisms contributing to CKD. In particular, oxidative stress as well as inflammation appears to play a pivotal role in CKD progression. ()-Epigallocatechin-3-gallate (EGCG), the major catechin of green tea extract, is known as a powerful antioxidant and reactive oxygen species scavenger. Various studies have shown EGCG has a potential role in chronic kidney disease models. It is suggested that EGCG modulates cellular and molecular mechanisms via inflammation-related NF-кB and Nrf2 signaling pathway, as well as apoptosis-related ER stress pathway and mitochondrial pathway. Therefore, based on these studies, this review attempts to present a recent state of our knowledge and understanding of mechanisms of its role on the process of CKD, with the aim of providing some clues for the future optimization of EGCG in renal diseases.
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Affiliation(s)
- Hui Bao
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ai Peng
- Department of Nephrology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Radhakrishnan R, Kulhari H, Pooja D, Gudem S, Bhargava S, Shukla R, Sistla R. Encapsulation of biophenolic phytochemical EGCG within lipid nanoparticles enhances its stability and cytotoxicity against cancer. Chem Phys Lipids 2016; 198:51-60. [PMID: 27234272 DOI: 10.1016/j.chemphyslip.2016.05.006] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/17/2016] [Accepted: 05/21/2016] [Indexed: 10/21/2022]
Abstract
Epigallocatechin gallate (EGCG), a green tea polyphenolic catechin, has been known to possess a variety of beneficial biological activities. The in-vitro anti-cancer activity of EGCG is well documented. However, the use of EGCG in modern therapeutics is limited due to its poor bioavailability and limited stability at physiological pH. In this study, we have investigated the stability profiles of EGCG in aqueous solutions using UV-vis spectroscopy. Stability results showed very low stability profile of EGCG at physiological pH with rapid degradation under alkaline conditions. Therefore, we have encapsulated EGCG in solid lipid nanoparticles to increase its stability and evaluated for anticancer activity. The lipid core of nanoparticles not only provides an additional structural reinforcement to the nanoparticle assembly, but also makes it biologically compatible, thereby enabling a stealth vehicle for efficient drug delivery. EGCG loaded nanoparticles (EGCG-SLN) were characterized using dynamic light scattering, Fourier transform infrared spectroscopy and differential scanning calorimetry. EGCG and EGCG-SLN were evaluated for their anticancer activities by cellular proliferation. The cytotoxicity of EGCG-SLN was found to be 8.1 times higher against MDA-MB 231 human breast cancer cells and 3.8 times higher against DU-145 human prostate cancer cells than that of the pure EGCG.
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Affiliation(s)
- Rasika Radhakrishnan
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia
| | - Hitesh Kulhari
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Deep Pooja
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Sagarika Gudem
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Suresh Bhargava
- IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia
| | - Ravi Shukla
- IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia
| | - Ramakrishna Sistla
- Medicinal Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.
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25
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Vieira CP, De Oliveira LP, Da Ré Guerra F, Marcondes MCC, Pimentel ER. Green Tea and Glycine Modulate the Activity of Metalloproteinases and Collagen in the Tendinitis of the Myotendinous Junction of the Achilles Tendon. Anat Rec (Hoboken) 2016; 299:918-28. [DOI: 10.1002/ar.23361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 03/11/2016] [Accepted: 03/16/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Cristiano Pedrozo Vieira
- Department of Pharmacology; State University of Campinas; 13083-863 CP 6109 Campinas São Paulo Brazil
| | - LetÍCia Prado De Oliveira
- Structural and Functional Biology; Institute of Biology, State University of Campinas; 13083-863 CP 6109 Campinas São Paulo Brazil
| | - Flávia Da Ré Guerra
- Institute of Biological Sciences; Federal University of Alfenas; Alfenas Minas Gerais Brazil
| | - Maria Cristina Cintra Marcondes
- Structural and Functional Biology; Institute of Biology, State University of Campinas; 13083-863 CP 6109 Campinas São Paulo Brazil
| | - Edson Rosa Pimentel
- Structural and Functional Biology; Institute of Biology, State University of Campinas; 13083-863 CP 6109 Campinas São Paulo Brazil
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Jung K, Lee D, Yu JS, Namgung H, Kang KS, Kim KH. Protective effect and mechanism of action of saponins isolated from the seeds of gac (Momordica cochinchinensis Spreng.) against cisplatin-induced damage in LLC-PK1 kidney cells. Bioorg Med Chem Lett 2016; 26:1466-70. [DOI: 10.1016/j.bmcl.2016.01.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/08/2016] [Accepted: 01/20/2016] [Indexed: 12/14/2022]
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Preparative separation of gallocatechin gallate from Camellia ptilophylla using macroporous resins followed by sephadex LH-20 column chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1011:6-13. [DOI: 10.1016/j.jchromb.2015.12.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 12/10/2015] [Accepted: 12/19/2015] [Indexed: 01/24/2023]
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Elsherbiny NM, Eladl MA, Al-Gayyar MM. Renal protective effects of arjunolic acid in a cisplatin-induced nephrotoxicity model. Cytokine 2016; 77:26-34. [DOI: 10.1016/j.cyto.2015.10.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 12/23/2022]
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Peng YH, Sweet DH, Lin SP, Yu CP, Lee Chao PD, Hou YC. Green tea inhibited the elimination of nephro-cardiovascular toxins and deteriorated the renal function in rats with renal failure. Sci Rep 2015; 5:16226. [PMID: 26552961 PMCID: PMC4639770 DOI: 10.1038/srep16226] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/12/2015] [Indexed: 12/15/2022] Open
Abstract
Chronic kidney disease (CKD) is a major health problem worldwide. Indoxyl sulfate (IS) and p-cresyl sulfate (PCS) are highly protein-bound nephro-cardiovascular toxins, which are not efficiently removed through hemodialysis. The renal excretions of IS and PCS were mediated by organic anion transporters (OATs) such as OAT1 and OAT3. Green tea (GT) is a popular beverage containing plenty of catechins. Previous pharmacokinetic studies of teas have shown that the major molecules present in the bloodstream are the glucuronides/sulfates of tea catechins, which are putative substrates of OATs. Here we demonstrated that GT ingestion significantly elevated the systemic exposures of endogenous IS and PCS in rats with chronic renal failure (CRF). More importantly, GT also significantly increased the levels of serum creatinine (Cr) and blood urea nitrogen (BUN) in CRF rats. Mechanism studies indicated that the serum metabolites of GT (GTM) inhibited the uptake transporting functions of OAT1 and OAT3. In conclusion, GT inhibited the elimination of nephro-cardiovascular toxins such as IS and PCS, and deteriorated the renal function in CRF rats.
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Affiliation(s)
- Yu-Hsuan Peng
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C
| | - Douglas H Sweet
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, U.S.A
| | - Shiuan-Pey Lin
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C
| | - Chung-Ping Yu
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C
| | - Pei-Dawn Lee Chao
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C
| | - Yu-Chi Hou
- School of Pharmacy, China Medical University, Taichung, Taiwan, R.O.C.,Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
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Wang X, Jiang P, Wang P, Yang CS, Wang X, Feng Q. EGCG Enhances Cisplatin Sensitivity by Regulating Expression of the Copper and Cisplatin Influx Transporter CTR1 in Ovary Cancer. PLoS One 2015; 10:e0125402. [PMID: 25927922 PMCID: PMC4416002 DOI: 10.1371/journal.pone.0125402] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 03/23/2015] [Indexed: 12/13/2022] Open
Abstract
Cisplatin is one of the first-line platinum-based chemotherapeutic agents for treatment of many types of cancer, including ovary cancer. CTR1 (copper transporter 1), a transmembrane solute carrier transporter, has previously been shown to increase the cellular uptake and sensitivity of cisplatin. It is hypothesized that increased CTR1 expression would enhance the sensitivity of cancer cells to cisplatin (cDDP). The present study demonstrates for the first time that (-)-epigallocatechin-3-gallate (EGCG), a major polyphenol from green tea, can enhance CTR1 mRNA and protein expression in ovarian cancer cells and xenograft mice. EGCG inhibits the rapid degradation of CTR1 induced by cDDP. The combination of EGCG and cDDP increases the accumulation of cDDP and DNA-Pt adducts, and subsequently enhances the sensitivity of ovarian cancer SKOV3 and OVCAR3 cells to the chemotherapeutic agent. In the OVCAR3 ovarian cancer xenograft nude mice model, the combination of the lower concentration of cDDP and EGCG strongly repressed the tumor growth and exhibited protective effect on the nephrotoxicity induced by cisplatin. Overall, these findings uncover a novel chemotherapy mechanism of EGCG as an adjuvant for the treatment of ovarian cancer.
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Affiliation(s)
- Xuemin Wang
- Department of Nutrition and Food Hygiene, Key Laboratory of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
- Beijing Research Institute for Nutritional Resources, Beijing, China
| | - Pan Jiang
- Department of Nutrition and Food Hygiene, Key Laboratory of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Pengqi Wang
- Department of Nutrition and Food Hygiene, Key Laboratory of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chung S. Yang
- Department of Chemical Biology, Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey, United States of America
| | - Xuerong Wang
- Department of Pharmacology, School of Basic Medical Science, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qing Feng
- Department of Nutrition and Food Hygiene, Key Laboratory of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
- * E-mail:
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Abdel-Dayem MA, Elmarakby AA, Abdel-Aziz AA, Pye C, Said SA, El-Mowafy AM. Valproate-induced liver injury: modulation by the omega-3 fatty acid DHA proposes a novel anticonvulsant regimen. Drugs R D 2015; 14:85-94. [PMID: 24733439 PMCID: PMC4070460 DOI: 10.1007/s40268-014-0042-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background The polyunsaturated, ω-3 fatty acid, docosahexaenoic acid (DHA), claims diverse cytoprotective potentials, although via largely undefined triggers. Thus, we currently first tested the ability of DHA to ameliorate valproate (VPA)-evoked hepatotoxicity, to modulate its anticonvulsant effects, then sought the cellular and molecular basis of such actions. Lastly, we also verified whether DHA may kinetically alter plasma levels/clearance rate of VPA. Methods and Results VPA (500 mg/kg orally for 14 days in rats) evoked prominent hepatotoxicity that appeared as a marked rise (2- to 4-fold) in serum hepatic enzymes (γ-glutamyl transferase [γ-GT], alanine aminotransferase [ALT], and alkaline phosphatase [ALP]), increased hepatic lipid peroxide (LPO) and tumor necrosis factor-alpha (TNFα) levels, as well as myeloperoxidase (MPO) activity (3- to 5-fold), lowering of serum albumin (40 %), and depletion of liver reduced-glutathione (GSH, 35 %). Likewise, histopathologic examination revealed hepatocellular degeneration, replacement by inflammatory cells, focal pericentral necrosis, and micro/macrovesicular steatosis. Concurrent treatment with DHA (250 mg/kg) markedly blunted the elevated levels of liver enzymes, lipid peroxides, TNFα, and MPO activity, while raising serum albumin and hepatic GSH levels. DHA also alleviated most of the cytologic insults linked to VPA. Besides, in a pentylenetetrazole (PTZ) mouse convulsion model, DHA (250 mg/kg) markedly increased the latency in convulsion evoked by VPA, beyond their individual responses. Lastly, pharmacokinetic studies revealed that joint DHA administration did not alter serum VPA concentrations. Conclusions DHA substantially ameliorated liver injury induced by VPA, while also markedly boosted its pharmacologic effects. DHA manipulated definite cellular machinery to curb liver oxidative stress and inflammation, without affecting VPA plasma levels. Collectively, these protective and synergy profiles for DHA propose a superior VPA-drug combination regimen.
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Affiliation(s)
- Marwa A Abdel-Dayem
- Department of Pharmacology, Faculty of Pharmacy (FOP), Mansoura University, 35512, Mansoura, Egypt
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Vieira CP, Guerra FDR, de Oliveira LP, Almeida MS, Marcondes MCC, Pimentell ER. Green tea and glycine aid in the recovery of tendinitis of the Achilles tendon of rats. Connect Tissue Res 2015; 56:50-8. [PMID: 25360832 DOI: 10.3109/03008207.2014.983270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Green tea (GT) is widely used due to its anti-inflammatory properties. Previous studies have shown beneficial effects of a glycine diet on the remodeling process in inflamed tendons. Tendinitis is commonly observed in athletes and is of concern to surgeons due to the slowness of the recovery process. Our hypothesis is that GT + a glycine diet may improve tendinitis. AIM OF THE STUDY To analyze the effect of GT and/or glycine in the diet on tendinitis. MATERIALS AND METHODS Wistar rats were divided into seven groups (G): control group (C); G1 and G4, tendinitis; G2 and G5, tendinitis supplied with GT; and G3 and G6, tendinitis supplied with GT and a glycine diet for 7 or 21 days, respectively. We performed zymography for metalloproteinase, biochemical, morphological and biomechanics tests. RESULTS G2, G3 and G5 showed high levels of hydroxyproline in relation to G1, while G4 showed high levels of glycosaminoglycans. High activity of metalloproteinase-2 was detected in G3. The organization of collagen bundles was better in G2 and G3. G5 showed similar birefringence measurements compared with C. G5 withstood a larger load compared with G4. CONCLUSIONS The presence of metalloproteinase-2 indicates that a tissue is undergoing a remodeling process. High birefringence suggests a better organization of collagen bundles. After 21 days, G5 sustained a high load before rupture, unlike G4. The results suggest that GT + a glycine diet has beneficial effects that aid in the recovery process of the tendon after tendinitis.
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Affiliation(s)
- C P Vieira
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas , Campinas, SP , Brazil and
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Fatima S, Al-Mohaimeed N, Arjumand S, Banu N, Al-Jameil N, Al-Shaikh Y. Effect of pre- and post-combined multidoses of epigallocatechin gallate and coenzyme Q10 on cisplatin-induced oxidative stress in rat kidney. J Biochem Mol Toxicol 2014; 29:91-7. [PMID: 25382014 DOI: 10.1002/jbt.21671] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/27/2014] [Accepted: 09/08/2014] [Indexed: 12/29/2022]
Abstract
The nephroprotective effect of coenzyme Q10 and epigallocatechin gallate was investigated in rats with acute renal injury induced by a single nephrotoxic dose of cisplatin. Two days prior to cisplatin administration, epigallocatechin gallate and coenzyme Q10 alone and in four different combinations were given for 6 days. The treatment with antioxidants significantly protected the cisplatin-induced increase in the levels of blood urea nitrogen and serum creatinine. Both the antioxidants alone or in different combinations significantly compensated the increased malondialdehyde and reduced glutathione levels. Moreover, the decrease in the activities of superoxide dismutase, catalase, and glutathione peroxidase and the concentration of selenium, zinc, and copper ions were significantly attenuated in renal tissue. In conclusion, epigallocatechin gallate and coenzyme Q10 are equally effective against cisplatin-induced nephrotoxicity, whereas the intervention by combining these two antioxidants was found to be highly effective at low doses in attenuating oxidative stress in rat kidney.
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Affiliation(s)
- Sabiha Fatima
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi, Arabia.
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Zhou DH, Wang X, Feng Q. EGCG enhances the efficacy of cisplatin by downregulating hsa-miR-98-5p in NSCLC A549 cells. Nutr Cancer 2014; 66:636-44. [PMID: 24712372 DOI: 10.1080/01635581.2014.894101] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In the current study, the enhanced efficacy of cisplatin caused by (-)-epigallocatechin-3-gallate (EGCG) in nonsmall cell lung cancer (NSCLC) A549 cells was observed. The tumor size was significantly smaller in vivo in the combination of cisplatin and EGCG group, as compared with cisplatin-only group. However, in NCI-H460 cells, another kind of NSCLC cells, the efficacy of cisplatin was antagonized by EGCG. MiRNA microarray showed that hsa-miR-98-5p and hsa-miR-125a-3p were differentially expressed after EGCG treatment in these 2 cell lines. After transfection of hsa-miR-98-5p inhibitor, the survival fraction of both A549 and NCI-H460 cells was decreased upon cisplatin treatment. Meanwhile, as a critical regulator in the cisplatin-induced apoptosis, p53 was elevated by silencing of hsa-miR-98-5p. These results suggested that EGCG inhibited the expression of hsa-miR-98-5p, followed by an increase of p53, thus the efficacy of cisplatin was enhanced. Bioinformatics analysis showed that hsa-miR-125a-3p might have a strong connection with classical MAPK pathway. Taken together, these findings indicate that hsa-miR-98-5p could be a potential target in clinical cisplatin treatment of NSCLC. The combination of EGCG and cisplatin might be an effective therapeutic strategy in treating some type of NSCLC, although the possibility of antagonistic interactions must also be taken into account.
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Affiliation(s)
- Dong-Hu Zhou
- a Department of Nutrition and Food Safety, Key Laboratory of Toxicology, School of Public Health , Nanjing Medical University , Nanjing , Jiangsu , China
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Darweish MM, Abbas A, Ebrahim MA, Al-Gayyar MMH. Chemopreventive and hepatoprotective effects of Epigallocatechin-gallate against hepatocellular carcinoma: role of heparan sulfate proteoglycans pathway. J Pharm Pharmacol 2014; 66:1032-45. [DOI: 10.1111/jphp.12229] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 01/12/2014] [Indexed: 12/20/2022]
Abstract
Abstract
Objective
Epigallocatechin-gallate (EGCG) claims a plethora of health benefits including protection against neoplastic diseases. Meanwhile, heparan-sulfate proteoglycans (HSPGs) have defensive role against tumour cell invasion. Therefore, the chemopreventive and hepatoprotective effects of EGCG were studied in hepatocellular carcinoma (HCC) in vivo and in vitro and compared with strong water soluble antioxidant, sodium ascorbate.
Methods
HCC was induced in SD rats by thioacetamide (200 mg/Kg). Some rats were treated with EGCG (20 mg/Kg) or sodium ascorbate (100 mg/Kg). Liver impairment was assessed by measuring serum α-fetoprotein and investigating liver sections stained with H/E. Hepatic HSPGs, syndecan-1 and matrix metalloproteinase-9 (MMP-9) were measured by ELISA. Gene expression of fibroblast growth factor (FGF)-2 was measured. Cell death was assessed by caspase-3 activity. In addition, all markers were measured in human hepatocellular carcinoma cell line (HepG2).
Key findings
EGCG increased the animal survival and decreased both α-fetoprotein and HepG2 viability. In addition, EGCG ameliorated fibrosis and massive hepatic tissue breakdown. EGCG restored HSPGs and reduced expression of MMP-9, syndecan-1 and FGF-2 in-vivo and in-vitro. Sodium ascorbate showed significantly lower results than EGCG.
Conclusions
Besides antioxidant activity, other mechanisms are involved in the chemopreventive and hepatoprotective effects of EGCG including restoration of HSPGs receptors and inhibition of vascular invasion.
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Affiliation(s)
- Mohamed M Darweish
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
| | - Ahmed Abbas
- Deparment of Pharmacognosy, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
| | | | - Mohammed M H Al-Gayyar
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Mansoura, Mansoura, Egypt
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Kokaze A, Ishikawa M, Matsunaga N, Karita K, Yoshida M, Ohtsu T, Ochiai H, Shirasawa T, Nanri H, Hoshino H, Takashima Y. Unexpected combined effects of NADH dehydrogenase subunit-2 237 Leu/Met polymorphism and green tea consumption on renal function in male Japanese health check-up examinees: a cross-sectional study. J Negat Results Biomed 2013; 12:17. [PMID: 24252463 PMCID: PMC3842666 DOI: 10.1186/1477-5751-12-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 11/15/2013] [Indexed: 11/10/2022] Open
Abstract
Background NADH dehydrogenase subunit-2 237 leucine/methionine (ND2-237 Leu/Met) polymorphism is associated with longevity in Japanese. A previous study has shown that ND2-237 Leu/Met polymorphism modulates the effects of green tea consumption on risk of hypertension. For men with ND2-237Leu, habitual green tea consumption may reduce the risk of hypertension. Moreover, there is a combined effect of ND2-237 Leu/Met polymorphism and alcohol consumption on risk of mildly decreased estimated glomerular filtration rate (eGFR) (<90 ml/min/1.73 m2). Several beneficial effects of green tea on the kidney have been reported. The objective of this study was to investigate whether ND2-237 Leu/Met polymorphism modifies the effects of green tea consumption on risk of mildly decreased eGFR in male Japanese health check-up examinees. Results For ND2-237Leu genotypic men, after adjustment for confounding factors, green tea consumption may increase the risk of mildly decreased eGFR (P for trend = 0.016). The adjusted odds ratio (OR) for mildly decreased eGFR was significantly higher in subjects with ND2-237Leu who consume ≥6 cups of green tea per day than those who consume ≤1 cup of green tea per day (adjusted OR = 5.647, 95% confidence interval: 1.528-20.88, P = 0.009). On the other hand, for ND2-237Met genotypic men, green tea consumption does not appear to determine the risk of mildly decreased eGFR. Conclusion The present results suggest that ND2-237 Leu/Met polymorphism unexpectedly modifies the effects of green tea consumption on eGFR and the risk of mildly decreased eGFR in male Japanese subjects.
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Affiliation(s)
- Akatsuki Kokaze
- Department of Public Health, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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EGCG inhibit chemical reactivity of iron through forming an Ngal-EGCG-iron complex. Biometals 2013; 26:1041-50. [PMID: 24158698 DOI: 10.1007/s10534-013-9681-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 10/18/2013] [Indexed: 12/15/2022]
Abstract
Accumulated evidence indicates that the interconversion of iron between ferric (Fe(3+)) and ferrous (Fe(2+)) can be realized through interaction with reactive oxygen species in the Fenton and Haber-Weiss reactions and thereby physiologically effects redox cycling. The imbalance of iron and ROS may eventually cause tissue damage such as renal proximal tubule injury and necrosis. Many approaches were exploited to ameliorate the oxidative stress caused by the imbalance. (-)-Epigallocatechin-3-gallate, the most active and most abundant catechin in tea, was found to be involved in the protection of a spectrum of renal injuries caused by oxidative stress. Most of studies suggested that EGCG works as an antioxidant. In this paper, Multivariate analysis of the LC-MS data of tea extracts and binding assays showed that the tea polyphenol EGCG can form stable complex with iron through the protein Ngal, a biomarker of acute kidney injury. UV-Vis and Luminescence spectrum methods showed that Ngal can inhibit the chemical reactivity of iron and EGCG through forming an Ngal-EGCG-iron complex. In thinking of the interaction of iron and ROS, we proposed that EGCG may work as both antioxidant and Ngal binding siderphore in protection of kidney from injuries.
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Leu JG, Lin CY, Jian JH, Shih CY, Liang YJ. Epigallocatechin-3-gallate combined with alpha lipoic acid attenuates high glucose-induced receptor for advanced glycation end products (RAGE) expression in human embryonic kidney cells. ACTA ACUST UNITED AC 2013; 85:745-52. [DOI: 10.1590/s0001-37652013005000023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 12/17/2012] [Indexed: 11/22/2022]
Abstract
The anti-oxidant effects of epigallocatechin gallate (EGCG) and alpha lipoic acid (ALA) have been demonstrated in previous studies. The kidney protection effects of EGCG and ALA in patients with kidney injury are still under investigation. The purpose of this study is to investigate the anti-inflammatory and anti-oxidant effects of EGCG and ALA on high glucose-induced human kidney cell damage. EGCG inhibited high glucose(HG)-induced TNF-α and IL-6 production in human embryonic kidney (HEK) cells. Both EGCG and ALA decreased HG-induced receptor of advanced glycation end products (RAGE) mRNA and protein expressions in HEK cells. EGCG and ALA also recovered HG-inhibited superoxide dismutase production and decreased ROS expressions in HEK cells. The synergism of EGCG and ALA was also studied. The effect of EGCG combined with ALA is greater than the effect of EGCG alone in all anti-inflammation and anti-oxidant experiments. Our studies provide a potential therapeutic application of EGCG and ALA in preventing progression of diabetic nephropathy.
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Affiliation(s)
- Jyh-Gang Leu
- Fu-Jen Catholic University, Taiwan; Shin Kong Wu Ho-Su Memorial Hospital, Taiwan
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Lecumberri E, Dupertuis YM, Miralbell R, Pichard C. Green tea polyphenol epigallocatechin-3-gallate (EGCG) as adjuvant in cancer therapy. Clin Nutr 2013; 32:894-903. [PMID: 23582951 DOI: 10.1016/j.clnu.2013.03.008] [Citation(s) in RCA: 162] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 02/26/2013] [Accepted: 03/09/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Green tea catechins, especially epigallocatechin-3-gallate (EGCG), have been associated with cancer prevention and treatment. This has resulted in an increased number of studies evaluating the effects derived from the use of this compound in combination with chemo/radiotherapy. This review aims at compiling latest literature on this subject. METHODS Keywords including EGCG, cancer, chemotherapy, radiotherapy and side effects, were searched using PubMed and ScienceDirect databases to identify, analyze, and summarize the research literature on this topic. Most of the studies on this subject up to date are preclinical. Relevance of the findings, impact factor, and date of publication were critical parameters for the studies to be included in the review. RESULTS Additive and synergistic effects of EGCG when combined with conventional cancer therapies have been proposed, and its anti-inflammatory and antioxidant activities have been related to amelioration of cancer therapy side effects. However, antagonistic interactions with certain anticancer drugs might limit its clinical use. CONCLUSIONS The use of EGCG could enhance the effect of conventional cancer therapies through additive or synergistic effects as well as through amelioration of deleterious side effects. Further research, especially at the clinical level, is needed to ascertain the potential role of EGCG as adjuvant in cancer therapy.
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Affiliation(s)
- Elena Lecumberri
- Clinical Nutrition, Geneva University Hospital, 1211 Geneva, Switzerland
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Mathews VV, Paul MVS, Abhilash M, Manju A, Abhilash S, Nair RH. Mitigation of hepatotoxic effects of arsenic trioxide through omega-3 fatty acid in rats. Toxicol Ind Health 2012; 30:806-13. [DOI: 10.1177/0748233712463778] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Arsenic trioxide (As2O3) is an effective drug in the treatment of leukaemia and many solid tumours. In clinical trials, arsenic therapy is closely associated with hepatic toxicity. The present study was designed to investigate the efficacy of omega-3 fatty acid against As2O3-induced hepatotoxicity. A 4 mg/kg body weight (bw) of As2O3 was orally administered to Wistar male rats for 45 days. Hepatotoxicity was evaluated by biochemical tests, antioxidant assays and histopathological examinations. Arsenic accumulation was found in the liver tissue of rats treated with As2O3. Hepatoprotective efficacy of omega-3 fatty acid was analysed by the combination therapy with As2O3. In vivo studies revealed a significant rise in lipid peroxidation with concomitant decline in reduced glutathione, glutathione-dependant antioxidant enzymes and antiperoxidative enzymes in the liver tissue of rats treated with arsenic. The supplementation of omega-3 fatty acid at a dose of 50 mg/kg bw with As2O3 offers ameliorative effect against hepatocellular toxicity. Omega-3 fatty acid maintained hepatic marker enzymes, antioxidant enzymes and decreased lipid peroxidation. The combination treatment clearly reduced the hepatic structural abnormalities such as haemorrhage, necrosis and cholangiofibrosis in the rats treated with arsenic. This study concludes that the omega-3 fatty acid might be useful for the protection against As2O3-induced hepatotoxicity.
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Affiliation(s)
- Varghese V Mathews
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
| | - MV Sauganth Paul
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
| | - M Abhilash
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
| | - Alex Manju
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
| | - S Abhilash
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
| | - R Harikumaran Nair
- Physiology Research Laboratory, School of Biosciences, Mahatma Gandhi University, P.D Hills, Kottayam, Kerala, India
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Mostafa T, Sabry D, Abdelaal AM, Mostafa I, Taymour M. Cavernous antioxidant effect of green tea, epigallocatechin-3-gallate with/without sildenafil citrate intake in aged diabetic rats. Andrologia 2012; 45:272-7. [PMID: 22928786 DOI: 10.1111/and.12005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2012] [Indexed: 02/05/2023] Open
Abstract
This study aimed to assess the cavernous antioxidant effect of green tea (GT), epigallocatechin-3-gallate (EGCG) with/without sildenafil citrate intake in aged diabetic rats. One hundred and four aged male white albino rat were divided into controls that received ordinary chow, streptozotocin (STZ)-induced aged diabetic rats, STZ-induced diabetic rats on infused green tea, induced diabetic rats on epigallocatechin-3-gallate and STZ-induced diabetic rats on sildenafil citrate added to EGCG. After 8 weeks, dissected cavernous tissues were assessed for gene expression of eNOS, cavernous malondialdehyde (MDA), glutathione peroxidase (GPx), cyclic guanosine monophosphate (cGMP), and serum testosterone (T). STZ-induced diabetic rats on GT demonstrated significant increase in cavernous eNOS, cGMP, GPx and significant decrease in cavernous MDA compared with diabetic rats. Diabetic rats on EGCG demonstrated significant increase in cavernous eNOS, cGMP, GPx and significant decrease in cavernous MDA compared with diabetic rats or diabetic rats on GT. Diabetic rats on EGCG added to sildenafil showed significant increase in cavernous eNOS, cGMP and significant decrease in cavernous MDA compared with other groups. Serum T demonstrated nonsignificant difference between the investigated groups. It is concluded that GT and EGCG have significant cavernous antioxidant effects that are increased if sildenafil is added.
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Affiliation(s)
- T Mostafa
- Department of Andrology and Sexology, Faculty of Medicine, Cairo University, Cairo, Egypt.
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Li K, Shi X, Yang X, Wang Y, Ye C, Yang Z. Antioxidative activities and the chemical constituents of two Chinese teas, Camellia kucha and C. ptilophylla. Int J Food Sci Technol 2012. [DOI: 10.1111/j.1365-2621.2012.02942.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tsai PY, Ka SM, Chang JM, Chen HC, Shui HA, Li CY, Hua KF, Chang WL, Huang JJ, Yang SS, Chen A. Epigallocatechin-3-gallate prevents lupus nephritis development in mice via enhancing the Nrf2 antioxidant pathway and inhibiting NLRP3 inflammasome activation. Free Radic Biol Med 2011; 51:744-54. [PMID: 21641991 DOI: 10.1016/j.freeradbiomed.2011.05.016] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 04/29/2011] [Accepted: 05/13/2011] [Indexed: 01/02/2023]
Abstract
Patients with lupus nephritis show an impaired oxidative status and increased levels of interleukin (IL)-1β and IL-18, which are closely linked to inflammation and correlated with disease activity. Although epigallocatechin-3-gallate (EGCG), the major bioactive polyphenol present in green tea with antioxidant and free radical scavenging activities, has been reported to have anti-inflammatory effects by inhibiting nuclear factor-kappa B (NF-κB)-mediated inflammatory responses in vivo, its effectiveness for the treatment of lupus nephritis is still unknown. In the present study, 12-week-old New Zealand black/white (NZB/W) F1 lupus-prone mice were treated daily with EGCG by gavage until sacrificed at 34 weeks old for clinical, pathological, and mechanistic evaluation. We found that the administration (1) prevented proteinuria, renal function impairment, and severe renal lesions; (2) increased renal nuclear factor E2-related factor 2 (Nrf2) and glutathione peroxidase activity; (3) reduced renal oxidative stress, NF-κB activation, and NLRP3 mRNA/protein expression and protein levels of mature caspase-1, IL-1β, and IL-18; and (4) enhanced splenic regulatory T (Treg) cell activity. Our data clearly demonstrate that EGCG has prophylactic effects on lupus nephritis in these mice that are highly associated with its effects of enhancing the Nrf2 antioxidant signaling pathway, decreasing renal NLRP3 inflammasome activation, and increasing systemic Treg cell activity.
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Affiliation(s)
- Pei-Yi Tsai
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
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El-Mowafy A, Abdel-Dayem M, Abdel-Aziz A, El-Azab M, Said S. Eicosapentaenoic acid ablates valproate-induced liver oxidative stress and cellular derangement without altering its clearance rate: Dynamic synergy and therapeutic utility. Biochim Biophys Acta Mol Cell Biol Lipids 2011; 1811:460-7. [DOI: 10.1016/j.bbalip.2011.04.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Revised: 04/23/2011] [Accepted: 04/27/2011] [Indexed: 11/25/2022]
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Pohanka M, Sobotka J, Stetina R. Sulfur mustard induced oxidative stress and its alteration by epigallocatechin gallate. Toxicol Lett 2010; 201:105-9. [PMID: 21172412 DOI: 10.1016/j.toxlet.2010.12.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 12/05/2010] [Accepted: 12/13/2010] [Indexed: 12/20/2022]
Abstract
Sulfur mustard (bis(2-chloroethyl)sulfide; CAS: 505-60-2; abbreviated as HD) is a chemical warfare agent with not well understood mechanism of toxic effect. Deprivation of energy in cells and arising of oxidative stress appears during the exposure. Our experiment is based on investigation of 10mg or 20mg epigallocatechin gallate (EGCG) dose prophylactic effect (1h before HD) in rats exposed to either 20mg or 80 mg of HD. Blood mass, plasma and liver were sampled. Ferric reducing antioxidant power (FRAP), reduced glutathione, thiobarbuturic acid reactive substances (TBARSs), glutathione reductase, glutathione S-transferase and caspase 3 were assessed. Animals were sacrificed one day after exposure. We found significant deprivation of low molecular weight antioxidants due to EGCG but not due to HD. However, HD depleted reduced glutathione. EGCG has no effect to influence TBARS level. EGCG and HD up-regulated glutathione reductase and EGCG down regulated glutathione S-transferase in liver tissue. Regarding caspase, EGCG had anti apoptotic potency. We discuss potency to use EGCG to ameliorate redox balance after HD exposure. The data also appoints at difficulty in antioxidant therapy as prophylaxis to the oxidative stress related toxins exposure and ambivalent modulation of oxidative stress.
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Affiliation(s)
- Miroslav Pohanka
- Faculty of Military Health Sciences, University of Defence, Trebesska 1575, 50001 Hradec Kralove, Czech Republic.
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