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Park JM, Hahm KB. Dietary Walnuts Prevented Indomethacin-Induced Gastric Damage via AP-1 Transcribed 15-PGDH, Nrf2-Mediated HO-1, and n-3 PUFA-Derived Resolvin E1. Int J Mol Sci 2024; 25:7239. [PMID: 39000345 PMCID: PMC11242660 DOI: 10.3390/ijms25137239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/27/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs), the most highly prescribed drugs in the world for the treatment of pain, inflammation, and fever, cause gastric mucosal damage, including ulcers, directly or indirectly, by which the development of GI-safer (-sparing) NSAIDs relates to unmet medical needs. This study aimed to document the preventive effects of walnut polyphenol extracts (WPEs) against NSAID-induced gastric damage along with the molecular mechanisms. RGM-1 gastric mucosal cells were administered with indomethacin, and the expressions of the inflammatory mediators between indomethacin alone or a combination with WPEs were compared. The expressions of the inflammatory mediators, including COX-1 and COX-2, prostaglandin E2, 15-hydroxyprostaglandin dehydrogenase (15-PGDH), and antioxidant capacity, were analyzed by Western blot analysis, RT-PCR, and ELISA, respectively. HO-1, Nrf-2, and keap1 were investigated. The in vivo animal models were followed with in vitro investigations. The NSAIDs increased the expression of COX-2 and decreased COX-1 and 15-PGDH, but the WPEs significantly attenuated the NSAID-induced COX-2 expression. Interestingly, the WPEs induced the expression of 15-PGDH. By using the deletion constructs of the 15-PGDH promoter, we found that c-Jun is the most essential determinant of the WPE-induced up-regulation of 15-PGDH expression. We confirmed that the knockdown of c-Jun abolished the ability of the WPEs to up-regulate the 15-PGDH expression. In addition, the WPEs significantly increased the HO-1 expression. The WPEs increased the nuclear translocation of Nrf2 by Keap-1 degradation, and silencing Nrf2 markedly reduced the WPE-induced HO-1 expression. We found that the WPE-induced HO-1 up-regulation was attenuated in the cells harboring the mutant Keap1, in which the cysteine 151 residue was replaced by serine. These in vitro findings were exactly validated in indomethacin-induced gastric rat models. Daily walnut intake can be a promising nutritional supplement providing potent anti-inflammatory, antioxidative, and mucosa-protective effects against NSAID-induced GI damage.
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Affiliation(s)
- Jong Min Park
- College of Oriental Medicine, Daejeon University, Daejeon 34520, Republic of Korea
| | - Ki Baik Hahm
- CHA Cancer Preventive Research Center, CHA Bio Complex, Seongnam 13488, Republic of Korea
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Sayed AH, Mahmoud NS, Mohawed OAM, Ahmed HH. Combined effect of pantoprazole and mesenchymal stem cells on experimentally induced gastric ulcer: implication of oxidative stress, inflammation and apoptosis pathways. Inflammopharmacology 2024; 32:1961-1982. [PMID: 38652367 PMCID: PMC11136780 DOI: 10.1007/s10787-024-01469-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 03/21/2024] [Indexed: 04/25/2024]
Abstract
Gastric ulcer (GU) is one of the most common diseases of the upper gastrointestinal tract that affects millions of people worldwide. This study aimed to investigate the possible alleviating effect of a combined treatment of pantoprazole (PANTO) and adipose tissue-derived mesenchymal stem cells (ADSCs) in comparison with each treatment alone on the healing process of the experimentally induced GU in rats, and to uncover the involved pathways. Rats were divided into five groups: (1) Control, (2) GU, (3) PANTO, (4) ADSCs and (5) ADSCs + PANTO. Markers of oxidative stress, inflammation and apoptosis were assessed. The current data indicated that PANTO-, ADSCs- and ADSCs + PANTO-treated groups showed significant drop (p < 0.05) in serum advanced oxidation protein products (AOPPs) and advanced glycation end products (AGEPs) along with significant elevation (p < 0.05) in serum TAC versus the untreated GU group. Moreover, the treated groups (PANTO, ADSCs and ADSCs + PANTO) displayed significant down-regulation (p < 0.05) in gastric nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), tumor necrosis factor alpha (TNF-α), cyclooxygenase-2 (COX-2), intercellular adhesion molecule-1 (ICAM-1), matrix metallopeptidase 9 (MMP-9) and caspase-3 along with significant up-regulation (p < 0.05) in vascular endothelial growth factor (VEGF) and peroxisome proliferator-activated receptor gamma (PPARγ) genes expression compared to the untreated GU group. Immunohistochemical examination of gastric tissue for transforming growth factor β1 (TGF-β1), epidermal growth factor (EGF) and proliferating cell nuclear antigen (PCNA) showed moderate to mild and weak immune reactions, respectively in the PANTO-, ADSCs- and ADSCs + PANTO-treated rat. Histopathological investigation of gastric tissue revealed moderate to slight histopathological alterations and almost normal histological features of the epithelial cells, gastric mucosal layer, muscularis mucosa and submucosa in PANTO-, ADSCs- and ADSCs + PANTO-treated rats, respectively. Conclusively, the co-treatment with ADSCs and PANTO evidenced sententious physiological protection against GU by suppressing oxidative stress, inhibiting inflammation and reducing apoptosis with consequent acceleration of gastric tissue healing process.
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Affiliation(s)
- Alaa H Sayed
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki 12622, Giza, Egypt.
| | - Nadia S Mahmoud
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki 12622, Giza, Egypt
- Stem Cell Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza, Egypt
| | - Ola A M Mohawed
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki 12622, Giza, Egypt
| | - Hanaa H Ahmed
- Hormones Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki 12622, Giza, Egypt
- Stem Cell Lab, Center of Excellence for Advanced Sciences, National Research Centre, Dokki, Giza, Egypt
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El-Ashmawy NE, Khedr EG, El-Zamarany EA, Ahmed SM. Suppression of inflammation in ulcerative colitis rats by avocado and pomegranate. Clin Nutr ESPEN 2024; 61:253-265. [PMID: 38777441 DOI: 10.1016/j.clnesp.2024.03.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/13/2024] [Accepted: 03/29/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Pomegranate seed oil (PSO) and avocado seed oil (ASO) are natural polyphenols with established anti-inflammatory activity. PURPOSE This study aimed to investigate the molecular mechanisms underlying the therapeutic efficacy of PSO and ASO in experimental ulcerative colitis (UC) with reference to sulfasalazine (SLZ). METHODS Eighty male albino rats were divided equally into 8 groups; Normal, PSO, ASO, SLZ, UC-control, (UC + PSO), (UC + ASO) and (UC + SLZ) groups. Colitis was induced by intra-rectal injection of acetic acid. PSO (0.5ml/200g), ASO (1ml/250g) and SLZ (100 mg/kg) were administered orally once/day for 14 days, 24h after colitis induction. Colitis was evaluated by measuring disease activity index (DAI), colon weight/length ratio and histologic inflammatory score. Vascular endothelial growth factor receptor-2 (VEGFR-2), colonic macrophage migration inhibitory factor (MIF), and malondialdehyde (MDA) were determined. Colonic gene expression of TNF-α, VEGF and heme oxygenase-1 (HO-1) were also estimated. RESULTS PSO and ASO treatments to UC rats significantly reduced DAI, weight/length ratio, VEGFR-2, and colon histologic inflammatory score versus UC-controls. ASO significantly suppressed MIF levels and TNF-α expression greater than PSO. However, PSO was more significant than ASO in reducing MDA levels and up-regulating HO-1 expression. Both oils significantly down-regulated VEGF expression. The obtained biochemical and histological changes induced by UC were nearly corrected by SLZ. CONCLUSION The proved beneficial effect of PSO and ASO as anti-inflammatory, anti-angiogenic, and antioxidant in UC rats could be mediated by suppression of TNF-α, VEGF, and MIF and up-regulation of HO-1.
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Affiliation(s)
- Nahla E El-Ashmawy
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, 31527, Egypt; Department of Pharmacology and Biochemistry, Faculty of Pharmacy, The British University in Egypt, El-Sherouk, Cairo, 11837, Egypt
| | - Eman G Khedr
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, 31527, Egypt
| | - Enas A El-Zamarany
- Department of Clinical Pathology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Sarah M Ahmed
- Department of Biochemistry, Faculty of Pharmacy, Tanta University, Tanta, 31527, Egypt.
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Greco R, Alexander T, Del Papa N, Müller F, Saccardi R, Sanchez-Guijo F, Schett G, Sharrack B, Snowden JA, Tarte K, Onida F, Sánchez-Ortega I, Burman J, Castilla Llorente C, Cervera R, Ciceri F, Doria A, Henes J, Lindsay J, Mackensen A, Muraro PA, Ricart E, Rovira M, Zuckerman T, Yakoub-Agha I, Farge D. Innovative cellular therapies for autoimmune diseases: expert-based position statement and clinical practice recommendations from the EBMT practice harmonization and guidelines committee. EClinicalMedicine 2024; 69:102476. [PMID: 38361991 PMCID: PMC10867419 DOI: 10.1016/j.eclinm.2024.102476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/05/2024] [Accepted: 01/24/2024] [Indexed: 02/17/2024] Open
Abstract
Autoimmune diseases (ADs) are characterized by loss of immune tolerance, high chronicity, with substantial morbidity and mortality, despite conventional immunosuppression (IS) or targeted disease modifying therapies (DMTs), which usually require repeated administration. Recently, novel cellular therapies (CT), including mesenchymal stromal cells (MSC), Chimeric Antigen Receptors T cells (CART) and regulatory T cells (Tregs), have been successfully adopted in ADs. An international expert panel of the European Society for Blood and Marrow Transplantation and the International Society for the Cell and Gene Therapy, reviewed all available evidence, based on the current literature and expert practices, on use of MSC, CART and Tregs, in AD patients with rheumatological, neurological, and gastroenterological indications. Expert-based consensus and recommendations for best practice and quality of patient care were developed to support clinicians, scientists, and their multidisciplinary teams, as well as patients and care providers and will be regularly updated.
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Affiliation(s)
- Raffaella Greco
- Unit of Hematology and Bone Marrow Transplantation, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy
- Co-Chair of the Practice Harmonization and Guidelines Committee of EBMT and Chair of the ADWP of the EBMT, Barcelona, Spain
| | - Tobias Alexander
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Berlin, Germany
| | - Nicoletta Del Papa
- Scleroderma Clinic, Rheumatology Department, ASST G. Pini-CTO, Università degli Studi di Milano, Milano, Italy
| | - Fabian Müller
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen, Erlangen, Germany
- Bayrisches Zentrum für Krebsforschung (BZKF) Erlangen, Germany
| | - Riccardo Saccardi
- Cellular Therapies and Transfusion Medicine Unit, Careggi University Hospital, Florence, Italy
| | - Fermin Sanchez-Guijo
- Department of Hematology, IBSAL-University Hospital of Salamanca and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Georg Schett
- Department of Internal Medicine 3 - Rheumatology and Immunology, FAU Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
- Deutsches Zentrum Immuntherapie, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) Erlangen- Nürnberg, Erlangen, Germany
| | - Basil Sharrack
- Department of Neuroscience and Sheffield NIHR Translational Neuroscience BRC, Sheffield Teaching Hospitals NHS Foundation Trust & University of Sheffield, Sheffield, England, United Kingdom
| | - John A. Snowden
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Division of Clinical Medicine, School of Medicine and Population Health, The University of Sheffield, Sheffield, UK
| | - Karin Tarte
- SITI Lab, CHU Rennes, EFS Bretagne, University Rennes, Rennes, France
| | - Francesco Onida
- Hematology & ASCT Unit, ASST Fatebenefratelli-Sacco, University of Milan, Italy
- Co-Chair of the Practice Harmonization and Guidelines Committee of EBMT, Spain
| | - Isabel Sánchez-Ortega
- Secretary of the Practice Harmonization and Guidelines Committee of EBMT, Barcelona, Spain
- EBMT Medical Officer, Executive Office, Barcelona, Spain
| | - Joachim Burman
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | | | - Ricard Cervera
- Department of Autoimmune Diseases, Reference Centre for Systemic Autoimmune Diseases (UEC, CSUR) of the Catalan and Spanish Health Systems/Member of ERN-ReCONNET, Hospital Clínic, Barcelona, Catalonia, Spain
| | - Fabio Ciceri
- Unit of Hematology and Bone Marrow Transplantation, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy
| | - Andrea Doria
- Rheumatology Unit, Department of Medicine (DiMED), University of Padua, Padua, Italy
| | - Jörg Henes
- Center for Interdisciplinary Rheumatology, Immunology and Autoimmune diseases and Department of Internal Medicine II (Haematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Germany
| | - James Lindsay
- Department of Gastroenterology, The Royal London Hospital, Barts Health NHS Trust, London, UK
- Centre for Immunobiology, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
| | - Andreas Mackensen
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen, Erlangen, Germany
- Bayrisches Zentrum für Krebsforschung (BZKF) Erlangen, Germany
| | - Paolo A. Muraro
- Department of Brain Sciences, Imperial College London, London, UK
| | - Elena Ricart
- Gastroenterology Department. Hospital Clínic Barcelona. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS). Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Montserrat Rovira
- BMT Unit, Haematology Department, Institute of Haematology and Oncology, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
- Josep Carreras Leukaemia Research Foundation, Spain
| | - Tsila Zuckerman
- Rambam Health Care Campus and Rappaport Faculty of Medicine, Technion, Haifa, Israel
| | - Ibrahim Yakoub-Agha
- CHU de Lille, University Lille, INSERM U1286, Infinite, 59000, Lille, France
- Chair of the Practice Harmonization and Guidelines Committee of EBMT, Spain
| | - Dominique Farge
- Internal Medicine Unit (04): CRMR MATHEC, Maladies Auto-immunes et Thérapie Cellulaire, Centre de Référence des Maladies auto-immunes systémiques Rares d’Ile-de-France, AP-HP, St-Louis Hospital Paris-Cite University, France
- Department of Medicine, McGill University, Montreal, QC, Canada
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Ghareeb MA, Mohammed HS, Aboushousha T, Lotfy DM, El-Shazly MAM, Sobeh M, Taha EFS. Ipomoea carnea mitigates ethanol-induced ulcers in irradiated rats via Nrf2/HO -1 pathway: an in vivo and in silico study. Sci Rep 2024; 14:3469. [PMID: 38342928 PMCID: PMC10859386 DOI: 10.1038/s41598-024-53336-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/31/2024] [Indexed: 02/13/2024] Open
Abstract
The aim of this study was to investigate the potential of Ipomoea carnea flower methanolic extract (ICME) as a natural gastroprotective therapy against ethanol-induced gastric ulcers, particularly in individuals exposed to ionizing radiation (IR). The study focused on the Nrf2/HO-1 signaling pathway, which plays a crucial role in protecting the gastrointestinal mucosa from oxidative stress and inflammation. Male Wistar rats were divided into nine groups, the control group received distilled water orally for one week, while other groups were treated with ethanol to induce stomach ulcers, IR exposure, omeprazole, and different doses of ICME in combination with ethanol and/or IR. The study conducted comprehensive analyses, including LC-HRESI-MS/MS, to characterize the phenolic contents of ICME. Additionally, the Nrf2/HO-1 pathway, oxidative stress parameters, gastric pH, and histopathological changes were examined. The results showed that rats treated with IR and/or ethanol exhibited histopathological alterations, increased lipid peroxidation, decreased antioxidant enzyme activity, and reduced expression levels of Nrf2 and HO-1. However, pretreatment with ICME significantly improved these parameters. Phytochemical analysis identified 39 compounds in ICME, with flavonoids, hydroxybenzoic acids, and fatty acids as the predominant compounds. Virtual screening and molecular dynamics simulations suggested that ICME may protect against gastric ulceration by inhibiting oxidative stress and inflammatory mediators. In conclusion, this study demonstrates the potential of ICME as a natural gastroprotective therapy for preventing gastric ulcers. These findings contribute to the development of novel interventions for gastrointestinal disorders using natural plant extracts particularly in individuals with a history of radiation exposure.
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Affiliation(s)
- Mosad A Ghareeb
- Medicinal Chemistry Department, Theodor Bilharz Research Institute, Kornaish El-Nile, Warrak El-Hadar, Imbaba, P.O. Box 30, Giza, 12411, Egypt
| | - Hala Sh Mohammed
- Department of Pharmacognosy and Medicinal Plants, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, 11311, Egypt
| | - Tarek Aboushousha
- Department of Pathology, Theodor Bilharz Research Institute, Kornaish El-Nile, Warrak El-Hadar, Imbaba, P.O. Box 30, Giza, 12411, Egypt
| | - Dina M Lotfy
- Drug Radiation Research Department, National Center for Radiation Research and Technology, (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt
| | - Maha A M El-Shazly
- Medicinal Chemistry Department, Theodor Bilharz Research Institute, Kornaish El-Nile, Warrak El-Hadar, Imbaba, P.O. Box 30, Giza, 12411, Egypt
| | - Mansour Sobeh
- AgroBioSciences, Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, 43150, Ben-Guerir, Morocco
| | - Eman F S Taha
- Health Radiation Research Department, National Center for Radiation Research and Technology, (NCRRT), Egyptian Atomic Energy Authority, Cairo, Egypt.
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Li B, Lv X, Xu Z, He J, Liu S, Zhang X, Tong X, Li J, Zhang Y. Helicobacter pylori infection induces autophagy via ILK regulation of NOXs-ROS-Nrf2/HO-1-ROS loop. World J Microbiol Biotechnol 2023; 39:284. [PMID: 37599292 DOI: 10.1007/s11274-023-03710-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 07/21/2023] [Indexed: 08/22/2023]
Abstract
Reactive oxygen species (ROS) can regulate the occurrence of autophagy, and effective control of the balance between ROS and autophagy may be an important strategy for Helicobacter pylori induced gastric-related diseases. In this study, infection with H. pylori led to a lower level of ILK phosphorylation and increased ROS generation. Knockdown of ILK enhanced total ROS generation, and upregulated NADPH oxidase (NOX) subunit p22-phox levels. Inhibition of NOXs affected total ROS generation. The inhibition of NOX and ROS generation reduced Nrf2 and HO-1 levels, and knockdown of ILK significantly enhanced Nrf2 levels in H. pylori-infected GES-1 cells. Activation of Nrf2 by DMF decreased ROS levels. Therefore, NOX-dependent ROS production regulated by ILK was essential for activation of Nrf2/HO-1 signaling pathways in H. pylori-infected GES-1 cells. Beclin1, ATG5 and LC3B-II levels were higher both in H. pylori-infected and ILK-knockdown GES-1 cells. In NAC-pretreated GES-1 cells infected with H. pylori, the LC3B-II level was decreased compared to that in cells after H. pylori infection alone. Stable low expression of ILK with further knockdown of Beclin1 or ATG5 significantly reduced LC3B-II levels in GES-1 cells, while with the addition of the autophagy inhibitor chloroquine (CQ), LC3B-II and p62 protein levels were both remarkably upregulated. H. pylori accelerated the accumulation of ROS and further led to the induction of ROS-mediated autophagy by inhibiting ILK levels. Together, these results indicate that H. pylori infection manipulates the NOX-ROS-Nrf2/HO-1-ROS loop to control intracellular oxygen stress and further induced ROS-mediated autophagy by inhibiting ILK levels.
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Affiliation(s)
- Boqing Li
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Xin Lv
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Zheng Xu
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Jing He
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - SiSi Liu
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Xiaolin Zhang
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Xiaohan Tong
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Jing Li
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China
| | - Ying Zhang
- School of Basic Medical Sciences, Binzhou Medical University, 346# Guanhai Road, Yantai, 264003, China.
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Potential effects of carbon monoxide donor and its nanoparticles on experimentally induced gastric ulcer in rats. Inflammopharmacology 2023; 31:1495-1510. [PMID: 36882659 DOI: 10.1007/s10787-023-01166-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/13/2023] [Indexed: 03/09/2023]
Abstract
The prevalence of gastric ulcers is increasing worldwide, especially those brought on by non-steroidal anti-inflammatory drugs (NSAIDS), so prevention is extremely crucial. The protective potential of carbon monoxide (CO) in several inflammatory disorders has been clarified. The goal of the current study was to investigate the gastroprotective effect of CO produced by its pharmacological donor (CORM2) and its nanoparticles (NPs) against indomethacin (INDO)-induced ulcers. Investigations on CORM2's dose-dependent effects were also conducted. For induction of gastric ulcer, 100 mg kg-1 of INDO was given orally. Before ulcer induction, CORM2 (5, 10, and 15 mg kg-1), CORM2 nanoparticles (5 mg kg-1), or ranitidine (30 mg kg-1) were given intraperitoneally for 7 days. Ulcer score, gastric acidity, gastric contents of malondialdehyde (MDA), nitric oxide (NO), heme oxygenase-1 (HO-1), and carboxyhemoglobin (COHb) blood content were estimated. Additionally, gene expression of nuclear factor erythroid 2-related factor 2 (NRF2) and immunohistochemical staining of cyclooxygenase-1 (COX-1) as well as cyclooxygenase-2 (COX-2) were analyzed. Results demonstrated a substantial dose-dependent decrease in ulcer score, pro-inflammatory indicators, and oxidative stress markers with CORM2 and its NPs. Furthermore, CORM2 and its NPs markedly increased NRF2, COX-1, and HO-1, but CORM2 NPs outperformed CORM2 in this regard. In conclusion, the CO released by CORM2 can protect against INDO-induced gastric ulcers dose dependently, and the highest used dose had no effect on COHb concentration.
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8
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Abd Al Haleem EN, Ibrahim FAZM, Zaytoon SAB, Arafa HMM. Possible protective effect of TNF-α inhibition and triad NO/cGMP/VEGF activation on gastric ulcer in rats. Can J Physiol Pharmacol 2021; 99:864-874. [PMID: 33400612 DOI: 10.1139/cjpp-2020-0725] [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] [Indexed: 11/22/2022]
Abstract
Peptic ulcers are one of the world's major gastrointestinal disorders, embracing both gastric and duodenal ulcers, and affecting 10% of the world population. The current study aimed to investigate the possible protective effect of tadalafil and pentoxifylline (PTX) on indomethacin-induced peptic ulcers. Male albino rats were divided into five groups: control group; ulcerated group; Indomethacin + Tadalafil, in which animals were pretreated with tadalafil orally before indomethacin; Indomethacin+ PTX, in which animals were pretreated with PTX orally before indomethacin; and Indomethacin + Tadafil + PTX. Indomethacin treatment revealed histopathological changes and ulcer scoring and ulcer index were markedly increased. Serum levels of prostaglandin and heme oxygenase-1 were significantly decreased. The ulcerogenic also induced marked oxidative stress as evident from the increased malondialdehyde, decreased in gastric glutathione content and superoxide dismutase activity, while the gastric myeloperoxidase was increased. Gastric nitric oxide content was decreased and the expression of vascular endothelial growth factor was downregulated while the tumor necrosis factor α (TNF-α) level was dramatically increased. Pretreatment of the ulcerative group by either tadalafil or PTX or their combination improved all these pathological changes. Tadalafil or PTX may have a role in protecting gastric mucosa damage caused by indomethacin which may be useful in the future for the treatment of gastric ulceration.
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Affiliation(s)
- Ekram Nemr Abd Al Haleem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy for Girls, Al-Azhar University, Cairo, Egypt
| | | | - Sawsan Abo Bakr Zaytoon
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismaelia, Egypt
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An Overview of Nrf2 Signaling Pathway and Its Role in Inflammation. Molecules 2020; 25:molecules25225474. [PMID: 33238435 PMCID: PMC7700122 DOI: 10.3390/molecules25225474] [Citation(s) in RCA: 573] [Impact Index Per Article: 143.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/13/2020] [Accepted: 11/19/2020] [Indexed: 12/16/2022] Open
Abstract
Inflammation is a key driver in many pathological conditions such as allergy, cancer, Alzheimer’s disease, and many others, and the current state of available drugs prompted researchers to explore new therapeutic targets. In this context, accumulating evidence indicates that the transcription factor Nrf2 plays a pivotal role controlling the expression of antioxidant genes that ultimately exert anti-inflammatory functions. Nrf2 and its principal negative regulator, the E3 ligase adaptor Kelch-like ECH- associated protein 1 (Keap1), play a central role in the maintenance of intracellular redox homeostasis and regulation of inflammation. Interestingly, Nrf2 is proved to contribute to the regulation of the heme oxygenase-1 (HO-1) axis, which is a potent anti-inflammatory target. Recent studies showed a connection between the Nrf2/antioxidant response element (ARE) system and the expression of inflammatory mediators, NF-κB pathway and macrophage metabolism. This suggests a new strategy for designing chemical agents as modulators of Nrf2 dependent pathways to target the immune response. Therefore, the present review will examine the relationship between Nrf2 signaling and the inflammation as well as possible approaches for the therapeutic modulation of this pathway.
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10
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Dietary walnut as food factor to rescue from NSAID-induced gastrointestinal mucosal damages. Arch Biochem Biophys 2020; 689:108466. [PMID: 32590067 DOI: 10.1016/j.abb.2020.108466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/08/2020] [Accepted: 06/07/2020] [Indexed: 01/22/2023]
Abstract
Nuclear factor erythroid-derived 2-like 2 (Nrf-2) is transcription factor implicated in the antioxidant response element-mediated induction of endogenous antioxidant enzyme such as heme oxygenase-1 (HO-1), glutamate-cysteine ligase, and NAD(P)H quinone dehydrogenase 1, among which HO-1 is an enzyme catalyzing the degradation of heme.producing biliverdin, ferrous iron, and carbon monoxide. In the stomach, as much as regulating gastric acid secretions, well-coordinated establishment of defense system stands for maintaining gastric integrity. In previous study, author et al. for the first time discovered HO-1 induction was critical in affording faithful gastric defense against various irritants including Helicobacter pylori infection, stress, alcohol, non-steroidal anti-inflammatory drugs (NSAIDs), aspirin, and toxic bile acids. In this review article, we can add the novel evidence that dietary walnut intake can be reliable way to rescue from NSAIDs-induced gastrointestinal damages via the induction of HO-1 transcribed with Nrf-2 through specific inactivation of Keap-1. From molecular exploration to translational animal model of indomethacin-induced gastrointestinal damages, significant induction of HO-1 contributed to rescuing from damages. In addition to HO-1 induction action relevant to walnut, we added the description the general actions of walnut extracts or dietary intake of walnut regarding cytoprotection and why we have focused on to NSAID damages.
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Eraslan E, Tanyeli A, Güler MC, Kurt N, Yetim Z. Agomelatine prevents indomethacin-induced gastric ulcer in rats. Pharmacol Rep 2020; 72:984-991. [PMID: 32048252 DOI: 10.1007/s43440-019-00049-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/26/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Gastric ulcer is a very common gastrointestinal disease that may be dangerous and even may lead to death. The current study was conducted to detect the prophylactic effects of agomelatine on indomethacin-induced gastric ulcer. METHODS In this study, a total of 5 groups were created as the sham, ulcer, omeprazole, agomelatine 1 mg/kg and agomelatine 5 mg/kg groups. The effects of agomelatine on indomethacin-induced gastric injury were investigated. Total antioxidant and oxidant levels; the oxidant parameters like oxidative stress index and the inflammation markers such as tumor necrosis factor-α, interleukin-1β, interleukin-6 and interleukin-10 levels in stomach tissue were determined by ELISA. In addition, the gastric mucosal injury occurred in stomach wall was examined with histopathological methods. RESULTS While the levels of the inflammatory markers, total oxidant status and oxidative stress index increased at an obvious level especially in the indomethacin group, the total antioxidant status levels decreased. It was observed that these parameters were improved at a significant level in agomelatine 1 mg/kg and agomelatine 5 mg/kg groups when compared to ulcer group; and the results were similar to omeprazole group. It was also observed that our histopathological findings were consistent with all our other results. CONCLUSIONS The results of this study showed that agomelatine usage in indomethacin-induced gastric ulcer model provides beneficial results.
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Affiliation(s)
- Ersen Eraslan
- Department of Physiology, Faculty of Medicine, Yozgat Bozok University, Yozgat, 66200, Turkey.
| | - Ayhan Tanyeli
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Mustafa Can Güler
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Nezahat Kurt
- Department of Biochemistry, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Zeliha Yetim
- Department of Histology and Embryology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
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Acute expression of the transcription factor Nrf2 after treatment with quinolinic acid is not induced by oxidative stress in the rat striatum. Neurotoxicology 2019; 73:120-131. [PMID: 30876764 DOI: 10.1016/j.neuro.2019.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/26/2019] [Accepted: 03/10/2019] [Indexed: 11/20/2022]
Abstract
Quinolinic acid (QUIN) is an excitotoxic and pro-oxidant molecule used in the study of neurodegenerative disorders because it reproduces certain biochemical characteristics present in these diseases. The use of antioxidant molecules in the QUIN model reduces cellular damage through the nuclear factor erythroid 2-related to factor 2 (Nrf2) pathway. The Nrf2 transcription factor is considered the master regulator of antioxidant genes expression, and its activation occurs by an increase in the reactive oxygen species (ROS) levels or in the presence of electrophilic compounds. However, Nrf2 activation also occurs in an oxidative stress-independent process caused by the disruption of the Keap1-Nrf2 complex by the direct interaction of Keap1 with certain proteins, such as DPP3 and p62. The aim of this study was to evaluate the effect of QUIN on Nrf2 activation over short periods of time. QUIN administration increased Nrf2 activation at 30 min in the striatum without increasing ROS production or modifying the redox cellular state. Moreover, QUIN increased Keap1 and Nrf2 nuclear levels and increased the protein-protein interaction between Keap1 and DPP3 and Keap1 and p62 30 min after QUIN administration. Finally, we found that Nrf2 activation primarily occurs in striatal neurons. Our results show that QUIN administration in vivo stimulates Nrf2 expression and activation in the absence of oxidative stress primarily in neurons and increases the interaction of p62 and DPP3 with Keap1, which could participate in Nrf2 activation.
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Mathew G, Sharma A, Pickering RJ, Rosado CJ, Lemarie J, Mudgal J, Thambi M, Sebastian S, Jandeleit-Dahm KA, de Haan JB, Unnikrishnan MK. A novel synthetic small molecule DMFO targets Nrf2 in modulating proinflammatory/antioxidant mediators to ameliorate inflammation. Free Radic Res 2018; 52:1140-1157. [PMID: 30422019 DOI: 10.1080/10715762.2018.1533636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Inflammation is a protective immune response against invading pathogens, however, dysregulated inflammation is detrimental. As the complex inflammatory response involves multiple mediators, including the involvement of reactive oxygen species, concomitantly targeting proinflammatory and antioxidant check-points may be a more rational strategy. We report the synthesis and anti-inflammatory/antioxidant activity of a novel indanedione derivative DMFO. DMFO scavenged reactive oxygen species (ROS) in in-vitro radical scavenging assays and in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. In acute models of inflammation (carrageenan-induced inflammation in rat paw and air pouch), DMFO effectively reduced paw oedema and leucocyte infiltration with an activity comparable to diclofenac. DMFO stabilised mast cells (MCs) in in-vitro A23187 and compound 48/80-induced assays. Additionally, DMFO stabilised MCs in an antigen (ovalbumin)-induced MC degranulation model in-vivo, without affecting serum IgE levels. In a model of chronic immune-mediated inflammation, Freund's adjuvant-induced arthritis, DMFO reduced arthritic score and contralateral paw oedema, and increased the pain threshold with an efficacy comparable to diclofenac but without being ulcerogenic. Additionally, DMFO significantly reduced serum TNFα levels. Mechanistic studies revealed that DMFO reduced proinflammatory genes (IL1β, TNFα, IL6) and protein levels (COX2, MCP1), with a concurrent increase in antioxidant genes (NQO1, haem oxygenase 1 (HO-1), Glo1, Nrf2) and protein (HO-1) in LPS-stimulated macrophages. Importantly, the anti-inflammatory/antioxidant effect on gene expression was absent in primary macrophages isolated from Nrf2 KO mice suggesting an Nrf2-targeted activity, which was subsequently confirmed using siRNA transfection studies in RAW macrophages. Therefore, DMFO is a novel, orally-active, safe (even at 2 g/kg p.o.), a small molecule which targets Nrf2 in ameliorating inflammation.
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Affiliation(s)
- Geetha Mathew
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India.,b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia.,c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Arpeeta Sharma
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Raelene J Pickering
- c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Carlos J Rosado
- c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Jeremie Lemarie
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Jayesh Mudgal
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Magith Thambi
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Sarine Sebastian
- a Department of Pharmacology, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
| | - Karin A Jandeleit-Dahm
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia.,c Department of Diabetes, the Alfred Centre , Monash University , Melbourne , Australia
| | - Judy B de Haan
- b Oxidative Stress Laboratory, Basic Science Domain , Baker Heart and Diabetes Institute , Melbourne , Australia
| | - Mazhuvancherry K Unnikrishnan
- d Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences , Manipal Academy of Higher Education , Manipal , India
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Huang H, Falgout B, Takeda K, Yamada KM, Dhawan S. Nrf2-dependent induction of innate host defense via heme oxygenase-1 inhibits Zika virus replication. Virology 2017; 503:1-5. [PMID: 28068513 DOI: 10.1016/j.virol.2016.12.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/15/2016] [Accepted: 12/18/2016] [Indexed: 01/09/2023]
Abstract
We identified primary human monocyte-derived macrophages (MDM) as vulnerable target cells for Zika virus (ZIKV) infection. We demonstrate dramatic effects of hemin, the natural inducer of the heme catabolic enzyme heme oxygenase-1 (HO-1), in the reduction of ZIKV replication in vitro. Both LLC-MK2 monkey kidney cells and primary MDM exhibited hemin-induced HO-1 expression with major reductions of >90% in ZIKV replication, with little toxicity to infected cells. Silencing expression of HO-1 or its upstream regulatory gene, nuclear factor erythroid-related factor 2 (Nrf2), attenuated hemin-induced suppression of ZIKV infection, suggesting an important role for induction of these intracellular mediators in retarding ZIKV replication. The inverse correlation between hemin-induced HO-1 levels and ZIKV replication provides a potentially useful therapeutic modality based on stimulation of an innate cellular response against Zika virus infection.
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Affiliation(s)
- Hanxia Huang
- Food and Drug Administration, Silver Spring, MD, United States
| | - Barry Falgout
- Food and Drug Administration, Silver Spring, MD, United States
| | - Kazuyo Takeda
- Food and Drug Administration, Silver Spring, MD, United States
| | | | - Subhash Dhawan
- Food and Drug Administration, Silver Spring, MD, United States.
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Abstract
The highly regulated pH of cells and the less-regulated pH of the surrounding extracellular matrix (ECM) is the result of a delicate balance between metabolic processes and proton production, proton transportation, chemical buffering, and vascular removal of waste products. Malignant cells show a pronounced increase in metabolic processes where the 10- to 15-fold rise in glucose consumption is only the tip of the iceberg. Aerobic glycolysis (Warburg effect) is one of the hallmarks of cancer metabolism that implies excessive production of protons, which if stayed inside the cells would result in fatal intracellular acidosis (maintaining a strict acid-base balance is essential for the survival of eukaryotic cells). Malignant cells solve this problem by increasing mechanisms of proton transportation which expel the excess acidity. This allows cancer cells to keep a normal intracellular pH, or even overshooting this mechanism permits a slightly alkaline intracellular tendency. The proton excess expelled from malignant cells accumulates in the ECM, where chronic hypoxia and relative lack of enough blood vessels impede adequate proton clearance, thus creating an acidic microenvironment. This microenvironment is quite heterogeneous due to the tumor's metabolic heterogeneity and variable degrees of hypoxia inside the tumor mass. The acidic environment (plus other necessary cellular modifications) stimulates migration and invasion and finally intravasation of malignant cells which eventually may result in metastasis. Targeting tumor pH may go in two directions: 1) increasing extracellular pH which should result in less migration, invasion, and metastasis; and 2) decreasing intracellular pH which may result in acidic stress and apoptosis. Both objectives seem achievable at the present state of the art with repurposed drugs. This hypothesis analyzes the altered pH of tumors and its implications for progression and metastasis and also possible repurposed drug combinations targeting this vulnerable side of cancer development. It also analyzes the double-edged approach, which consists in pharmacologically increasing intracellular proton production and simultaneously decreasing proton extrusion creating intracellular acidity, acid stress, and eventual apoptosis.
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Affiliation(s)
- Tomas Koltai
- Obra Social del Personal de la, Industria Alimenticia, Filial Capital Federal, Republic of Argentina
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16
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Ghebre Y, Raghu G. Proton pump inhibitors in IPF: beyond mere suppression of gastric acidity. QJM 2016; 109:577-579. [PMID: 27647940 PMCID: PMC5943831 DOI: 10.1093/qjmed/hcw115] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Indexed: 02/06/2023] Open
Abstract
Proton pump inhibitors (PPIs) are structurally composed of benzimidazole core; a pharmacologically common scaffold that makes up nearly one quarter of the hundred most selling drugs including anticancer, opioid, antihistaminic and antihelmintic drugs. In medicinal chemistry, benzimidazoles are coined as privileged scaffolds due to their ability to recognize and bind diverse biological targets. In this regard, PPIs have been linked to other extra-intestinal functions including direct modulation of airway epithelial, vascular endothelial and immune cells. PPIs have been reported to improve outcomes in idiopathic pulmonary fibrosis (IPF) including slowing the decline in measures of lung function, reducing episodes of acute exacerbations and prolonging transplant-free survival. Recently, the evidence-based guidelines for IPF treatment conditionally recommended the use of PPIs in IPF. However, no prospective clinical trial has been conducted to empirically evaluate the safety and efficacy of PPIs in IPF. Here, we discuss emerging anti-inflammatory and antifibrotic activity of PPIs in the context of IPF. We also discuss possible molecular mechanisms by which PPIs may unleash their beneficial effect in IPF.
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Affiliation(s)
- Y. Ghebre
- Radiation Oncology, Baylor College of Medicine, Houston, TX, USA
| | - G. Raghu
- Center for Interstitial Lung Disease, University of Washington School of Medicine, Seattle, WA, USA
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17
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Molecular mechanisms of gastrointestinal protection by quercetin against indomethacin-induced damage: role of NF-κB and Nrf2. J Nutr Biochem 2016; 27:289-98. [DOI: 10.1016/j.jnutbio.2015.09.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 12/30/2022]
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18
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Mathew G, Unnikrishnan MK. Multi-target drugs to address multiple checkpoints in complex inflammatory pathologies: evolutionary cues for novel "first-in-class" anti-inflammatory drug candidates: a reviewer's perspective. Inflamm Res 2015; 64:747-52. [PMID: 26186905 DOI: 10.1007/s00011-015-0851-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/01/2015] [Indexed: 01/07/2023] Open
Abstract
Inflammation is a complex, metabolically expensive process involving multiple signaling pathways and regulatory mechanisms which have evolved over evolutionary timescale. Addressing multiple targets of inflammation holistically, in moderation, is probably a more evolutionarily viable strategy, as compared to current therapy which addresses drug targets in isolation. Polypharmacology, addressing multiple targets, is commonly used in complex ailments, suggesting the superior safety and efficacy profile of multi-target (MT) drugs. Phenotypic drug discovery, which generated successful MT and first-in-class drugs in the past, is now re-emerging. A multi-pronged approach, which modulates the evolutionarily conserved, robust and pervasive cellular mechanisms of tissue repair, with AMPK at the helm, regulating the complex metabolic/immune/redox pathways underlying inflammation, is perhaps a more viable strategy than addressing single targets in isolation. Molecules that modulate multiple molecular mechanisms of inflammation in moderation (modulating TH cells toward the anti-inflammatory phenotype, activating AMPK, stimulating Nrf2 and inhibiting NFκB) might serve as a model for a novel Darwinian "first-in-class" therapeutic category that holistically addresses immune, redox and metabolic processes associated with inflammatory repair. Such a multimodal biological activity is supported by the fact that several non-calorific pleiotropic natural products with anti-inflammatory action have been incorporated into diet (chiefly guided by the adaptive development of olfacto-gustatory preferences over evolutionary timescales) rendering such molecules, endowed with evolutionarily privileged molecular scaffolds, naturally oriented toward multiple targets.
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Affiliation(s)
- Geetha Mathew
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, 576104, India
| | - M K Unnikrishnan
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, 576104, India.
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Development of GI-safe NSAID; progression from the bark of willow tree to modern pharmacology. Curr Opin Pharmacol 2014; 19:17-23. [DOI: 10.1016/j.coph.2014.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 06/01/2014] [Indexed: 12/15/2022]
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20
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Wang J, Zhang L, Zhang Y, Luo M, Wu Q, Yu L, Chu H. Transcriptional upregulation centra of HO-1 by EGB via the MAPKs/Nrf2 pathway in mouse C2C12 myoblasts. Toxicol In Vitro 2014; 29:380-8. [PMID: 25449124 DOI: 10.1016/j.tiv.2014.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 09/30/2014] [Accepted: 10/17/2014] [Indexed: 12/14/2022]
Abstract
Long-term abuse of alcohol results in chronic alcoholic myopathy which is associated with increased oxidative stress. Ginkgo biloba extract (EGB) is widely used as a therapeutic agent to treat certain cardiovascular and neurological disorders. Although EGB is known to possess antioxidant functions and potent cytoprotective effects, its protective mechanism on alcohol-induced oxidative damage in C2C12 myoblasts remains unclear. In this study, we investigated the cytoprotective mechanisms of EGB against alcohol-derived oxidative stress in mouse C2C12 myoblasts. Challenge with alcohol (100mM) caused an increase in intracellular reactive oxygen species in mouse C2C12 myoblasts, which was not alleviated by treatment with EGB. These results indicate that EGB does not seem to act as an ROS scavenger in this experimental model. Additionally, EGB produced activation of ERK and JNK [two major mitogen-activated protein kinases (MAPKs)], an increase in the nuclear level of nuclear factor erythroid-2-related factor 2 (Nrf2) and upregulation of heme oxygenase-1 (HO-1, a stress-responsive protein with antioxidant function). Pretreatment with inhibitors of MAPKs PD98059 (a specific inhibitor of ERK), SP600125 (a specific inhibitor of JNK) abolished both EGB-induced Nrf2 nuclear translocation and HO-1 up-regulation. We conclude that EGB confers cytoprotective effects from oxidative stress induced by alcohol in mouse C2C12 myoblasts depend on transcriptional upregulation of HO-1 by EGB via the MAPKs/Nrf2 pathway.
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Affiliation(s)
- Jianfeng Wang
- Department of Neurology, Affiliated Dalian Central Hospital of Dalian Medical University, Dalian 116033, Liaoning Province, China
| | - Li Zhang
- Central Laboratory, Affiliated Dalian Central Hospital of Dalian Medical University, Dalian 116033, Liaoning Province, China
| | - Ying Zhang
- Department of Neurology, Affiliated Dalian Central Hospital of Dalian Medical University, Dalian 116033, Liaoning Province, China
| | - Meiling Luo
- Department of Neurology, Affiliated Dalian Central Hospital of Dalian Medical University, Dalian 116033, Liaoning Province, China
| | - Qiong Wu
- Department of Neurology, Affiliated Dalian Central Hospital of Dalian Medical University, Dalian 116033, Liaoning Province, China
| | - Lijun Yu
- Department of Histology and Embryology, Colleges of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Haiying Chu
- Department of Histology and Embryology, Colleges of Basic Medical Sciences, Dalian Medical University, Dalian 116044, Liaoning Province, China.
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Muñoz A, Garrido-Gil P, Dominguez-Meijide A, Labandeira-Garcia JL. Angiotensin type 1 receptor blockage reduces l-dopa-induced dyskinesia in the 6-OHDA model of Parkinson's disease. Involvement of vascular endothelial growth factor and interleukin-1β. Exp Neurol 2014; 261:720-32. [DOI: 10.1016/j.expneurol.2014.08.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/01/2014] [Accepted: 08/16/2014] [Indexed: 12/17/2022]
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Paradoxically augmented anti-tumorigenic action of proton pump inhibitor and GastrininAPCMin/+ intestinal polyposis model. Neoplasia 2014; 16:73-83. [PMID: 24563620 DOI: 10.1593/neo.131510] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 12/03/2013] [Accepted: 12/19/2013] [Indexed: 12/12/2022] Open
Abstract
Though long-term administration of proton pump inhibitor (PPI) imposed the risk of gastrointestinal track tumorigenesis by accompanied hypergastrinemia, no overt increases of colon cancer risk were witnessed after a long-term cohort study. Our recent investigation revealed that PPI prevented colitis-associated carcinogenesis through anti-inflammatory, anti-oxidative, and anti-mutagenic mechanisms in spite of hypergastrinemia. Therefore, we hypothesized that PPI might either antagonize the trophic action of gastrin on gastrointestinal tumorigenesis or synergize to exert augmented anti-tumorigenic actions. We challenged APCMin/+ mice with gastrin, PPI, PPI and gastrin together for 10 weeks and counted intestinal polyposis accompanied with molecular changes. Gastrin significantly increased intestinal polyposis, but combination of PPI and gastrin markedly attenuated intestinal polyposis compared to gastrin-promoted APCMin/+ mice (P<.001), in which significant β-catenin phosphorylation and inhibition of β-catenin nuclear translocation were observed with PPI alone or combination of PPI and gastrin, whereas gastrin treatment significantly increased β-catenin nuclear translocation. Significant footprints of apoptosis, G0/G1 accumulation, inactivation of p38 and extracellular signal-regulated kinase, decreased expressions of CD31, and inhibition of tumor necrosis factor-α and cyclooxygenase-2 were noted in the combination group. In vitro investigations were similar to in vivo findings as shown that PPI treatment inhibited the binding of gastrin to its receptor, inactivated β-catenin-associated signaling including Tcf/Lef and glycogen synthase kinase β, and paradoxically inhibited β-catenin-associated proliferative activities. Our investigations explain why colon cancer risk has not increased despite long-term use of PPIs and provide a rationale for using PPI to achieve anti-tumorigenesis beyond acid suppression.
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Coenzyme Q10 depletion in medical and neuropsychiatric disorders: potential repercussions and therapeutic implications. Mol Neurobiol 2013; 48:883-903. [PMID: 23761046 DOI: 10.1007/s12035-013-8477-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 05/29/2013] [Indexed: 12/18/2022]
Abstract
Coenzyme Q10 (CoQ10) is an antioxidant, a membrane stabilizer, and a vital cofactor in the mitochondrial electron transport chain, enabling the generation of adenosine triphosphate. It additionally regulates gene expression and apoptosis; is an essential cofactor of uncoupling proteins; and has anti-inflammatory, redox modulatory, and neuroprotective effects. This paper reviews the known physiological role of CoQ10 in cellular metabolism, cell death, differentiation and gene regulation, and examines the potential repercussions of CoQ10 depletion including its role in illnesses such as Parkinson's disease, depression, myalgic encephalomyelitis/chronic fatigue syndrome, and fibromyalgia. CoQ10 depletion may play a role in the pathophysiology of these disorders by modulating cellular processes including hydrogen peroxide formation, gene regulation, cytoprotection, bioenegetic performance, and regulation of cellular metabolism. CoQ10 treatment improves quality of life in patients with Parkinson's disease and may play a role in delaying the progression of that disorder. Administration of CoQ10 has antidepressive effects. CoQ10 treatment significantly reduces fatigue and improves ergonomic performance during exercise and thus may have potential in alleviating the exercise intolerance and exhaustion displayed by people with myalgic encepholamyletis/chronic fatigue syndrome. Administration of CoQ10 improves hyperalgesia and quality of life in patients with fibromyalgia. The evidence base for the effectiveness of treatment with CoQ10 may be explained via its ability to ameliorate oxidative stress and protect mitochondria.
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