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Nogueira RC, Sanches-Lopes JM, Oliveira-Paula GH, Tanus-Santos JE. Inhibitors of gastric acid secretion increase oxidative stress and matrix metalloproteinase-2 activity leading to vascular remodeling. Mol Cell Biochem 2024:10.1007/s11010-023-04921-x. [PMID: 38302836 DOI: 10.1007/s11010-023-04921-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/20/2023] [Indexed: 02/03/2024]
Abstract
The use of inhibitors of gastric acid secretion (IGAS), especially proton pump inhibitors (PPI), has been associated with increased cardiovascular risk. While the mechanisms involved are not known, there is evidence supporting increased oxidative stress, a major activator of matrix metalloproteinases (MMP), as an important player in such effect. However, there is no study showing whether other IGAS such as histamine H2-receptor blockers (H2RB) cause similar effects. This study aimed at examining whether treatment with the H2RB ranitidine promotes oxidative stress resulting in vascular MMP activation and corresponding functional and structural alterations in the vasculature, as compared with those found with the PPI omeprazole. Male Wistar rats were treated (4 weeks) with vehicle (2% tween 20), omeprazole (10 mg/Kg/day; i.p.) or ranitidine (100 mg/Kg/day; gavage). Then the aorta was collected to perform functional, biochemical, and morphometric analysis. Both ranitidine and omeprazole increased gastric pH and oxidative stress assessed in situ with the fluorescent dye dihydroethidium (DHE) and with lucigenin chemiluminescence assay. Both IGAS augmented vascular activated MMP-2. These findings were associated with aortic remodeling (increased media/lumen ratio and number of cells/μm2). Both IGAS also impaired the endothelium-dependent relaxation induced by acetylcholine (isolated aortic ring preparation). This study provides evidence that the H2RB ranitidine induces vascular dysfunction, redox alterations, and remodeling similar to those found with the PPI omeprazole. These findings strongly suggest that IGAS increase oxidative stress and matrix metalloproteinase-2 activity leading to vascular remodeling, which helps to explain the increased cardiovascular risk associated with the use of those drugs.
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Affiliation(s)
- Renato C Nogueira
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14049-900, Brazil
| | - Jéssica M Sanches-Lopes
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14049-900, Brazil
| | - Gustavo H Oliveira-Paula
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14049-900, Brazil
- Division of Cardiology, Department of Medicine, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jose E Tanus-Santos
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14049-900, Brazil.
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Yucel MA, Ozcelik I, Algul O. Machine learning study: from the toxicity studies to tetrahydrocannabinol effects on Parkinson's disease. Future Med Chem 2023; 15:365-377. [PMID: 36942739 DOI: 10.4155/fmc-2022-0181] [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: 03/23/2023] Open
Abstract
Aim: Investigating molecules having toxicity and chemical similarity to find hit molecules. Methods: The machine learning (ML) model was developed to predict the arylhydrocarbon receptor (AHR) activity of anti-Parkinson's and US FDA-approved drugs. The ML algorithm was a support vector machine, and the dataset was Tox21. Results: The ML model predicted apomorphine in anti-Parkinson's drugs and 73 molecules in FDA-approved drugs as active. The authors were curious if there is any molecule like apomorphine in these 73 molecules. A fingerprint similarity analysis of these molecules was conducted and found tetrahydrocannabinol (THC). Molecular docking studies of THC for dopamine receptor 1 (affinity = -8.2 kcal/mol) were performed. Conclusion: THC may affect dopamine receptors directly and could be useful for Parkinson's disease.
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Affiliation(s)
- Mehmet Ali Yucel
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, 24100, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mersin University, Mersin, 33169, Turkey
| | - Ibrahim Ozcelik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, 24100, Turkey
| | - Oztekin Algul
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erzincan Binali Yildirim University, Erzincan, 24100, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mersin University, Mersin, 33169, Turkey
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Yuan H, Xu F, Tian X, Wei H, Zhang R, Ge Y, Xu H. Oxidative stress and inflammation caused by 1-tetradecyl-3-methylimidazolium tetrafluoroborate in rat livers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:86680-86691. [PMID: 35799001 DOI: 10.1007/s11356-022-21495-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
The purpose of this study was to elucidate the mechanism underlying toxicity in the livers of male and female rats after treatment with 1-tetradecyl-3-methylimidazolium tetrafluoroborate ([C14mim]BF4, 0 [control], 12.5, 25, or 50 mg/kg) for 90 days. The results showed that [C14mim]BF4 exposure led to a high level of ROS and MDA in rat livers and the lower expression of Nrf2 and its downstream related antioxidant proteins. In addition, the expression of NF-κB p65 and the levels of inflammatory cytokines were upregulated in exposure groups rats' liver. After 30 days of cessation of exposure, the liver injury of rats in the 50 mg/kg exposure group was alleviated, and the above indicators were improved to varying degrees. The paper shows that [C14mim]BF4 could damage rat liver through oxidative stress and inflammatory pathway.
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Affiliation(s)
- Huafei Yuan
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Feng Xu
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Xingxing Tian
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Haiyan Wei
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Rui Zhang
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Yueyue Ge
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Hongmei Xu
- College of Food and Biological Engineering, Hefei University of Technology, Hefei, China.
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An overview of aryl hydrocarbon receptor ligands in the Last two decades (2002–2022): A medicinal chemistry perspective. Eur J Med Chem 2022; 244:114845. [DOI: 10.1016/j.ejmech.2022.114845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/28/2022] [Accepted: 10/08/2022] [Indexed: 11/21/2022]
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Watanabe A, Momo K, Tanaka K, Uchikura T, Kiryu Y, Niiyama K, Kodaira N, Matsuzaki A, Sasaki T. Identification of the Components of Proton Pump Inhibitors and Potassium-Competitive Acid Blocker That Lead to Cardiovascular Events in Working-Age Individuals: A 12-Month Retrospective Cohort Study Using a Large Claims Database. Biol Pharm Bull 2022; 45:1373-1377. [DOI: 10.1248/bpb.b22-00367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ayako Watanabe
- Department of Hospital Pharmaceutics, School of Pharmacy, Showa University
| | - Kenji Momo
- Department of Hospital Pharmaceutics, School of Pharmacy, Showa University
| | - Katsumi Tanaka
- Department of Pharmacy, Showa University Koto Toyosu Hospital
| | | | - Yoshihiro Kiryu
- Department of Pharmacy, M&B Collaboration Medical corporation Hokuetsu Hospital
| | | | | | - Airi Matsuzaki
- Department of Pharmacy, Showa University Koto Toyosu Hospital
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Feng Y, Chen S, Zhao Y, Wu D, Li G. Heterocyclic aromatic amines induce Neuro-2a cells cytotoxicity through oxidative stress-mediated mitochondria-dependent apoptotic signals. Food Chem Toxicol 2022; 168:113376. [PMID: 35985368 DOI: 10.1016/j.fct.2022.113376] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/24/2022] [Accepted: 08/11/2022] [Indexed: 10/15/2022]
Abstract
Heterocyclic aromatic amines (HAAs) are a class of hazardous compounds produced in food thermal processing. These compounds raise concerns because they have mutagenic and carcinogenic properties. However, the neurotoxicity of these compounds has received limited attention. Here, the toxic effects of three HAAs, i.e. 9H-pyrido[3,4-b]indole (Norharman), 1-methyl-9H-pyrido[3,4-b]indole (Harman), and 2-amino-3-methylimidazole[4,5-f]quinoline (IQ) were investigated in Neuro-2a cells model. The results showed that the survival rate of cells decreased in a dose-dependent manner and apoptosis occurred after exposure to the three HAAs for 24 h and 48 h. Their neurotoxicity was ranked as Harman > Norharman > IQ. Further, treatment of Harman, Norharman, or IQ at 50 and 100 μM for 48 h led to intracellular REDOX imbalance, which was manifested as increased ROS and malondialdehyde (MDA) levels, decreased GSH/GSSG ratio, and reduced SOD and CAT activities. Moreover, Norharman and Harman up-regulated the expression level of nuclear factor erythroid 2-related factor 2 (Nrf2), as well as the mRNA levels of Heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidoredutase1 (NQO1), while IQ had no significant effect on the levels of Nrf2, HO-1, and NQO1. Additionally, Harman, Norharman, or IQ exposure significantly reduced mitochondrial membrane potential and intracellular ATP levels and up-regulated the levels of apoptosis-related genes and proteins. Collectively, our finding suggested that HAAs were neurotoxic, with mechanisms related to induction of oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- Yanmei Feng
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Shasha Chen
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Yan Zhao
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Di Wu
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, BT9 5DL, UK.
| | - Guoliang Li
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
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da Mata AMOF, Paz MFCJ, de Menezes AAPM, Dos Reis AC, da Silva Souza B, de Carvalho Sousa CD, Machado SA, Medeiros TSG, Sarkar C, Islam MT, Sharifi-Rad J, Daştan SD, Alshehri MM, de Castro E Sousa JM, de Carvalho Melo Cavalcante AA. Evaluation of mutagenesis, necrosis and apoptosis induced by omeprazole in stomach cells of patients with gastritis. Cancer Cell Int 2022; 22:154. [PMID: 35436881 PMCID: PMC9016981 DOI: 10.1186/s12935-022-02563-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 03/30/2022] [Indexed: 01/10/2023] Open
Abstract
Background Gastritis is a superficial and prevalent inflammatory lesion that is considered a public health concern once can cause gastric ulcers and gastric cancer, especially when associated with Helicobacter pylori infection. Proton pump inhibitors, such as omeprazole, are the most widely used drugs to treat this illness. The aim of the study was evaluate cytogenetic effects of omeprazole in stomach epithelial cells of patients with gastritis in presence and absence of H. pylori, through cytogenetic biomarkers and catalse and superoxide dismutase analysis. Methods The study included 152 patients from the Gastroenterology Outpatient Clinic of Hospital Getúlio Vargas, Teresina—Brazil, that reported continuous and prolonged omeprazole use in doses of 20, 30 and 40 mg/kg. The participants were divided into groups: (1) patients without gastritis (n = 32); (2) patients without gastritis but with OME use (n = 24); (3) patients with gastritis (n = 26); (4) patients with gastritis undergoing OME therapy (n = 26); (5) patients with gastritis and H. pylori (n = 22) and (6) patients with gastritis and H. pylori on OME therapy (n = 22). Results OME induced cytogenetic imbalance in the stomach epithelium through the formation of micronuclei (group 6 > 1, 2, 3, 4, 5; group 5 > 1, 2, 3; group 4 > 1, 2, 3); bridges (groups 4 and 6 > 1, 2, 3, 5 and group 2 > 3, 5); buds (groups 2,4,6 > , 1, 3, 5); binucleated cells (group 6 > 1, 2, 3, 4, 5; group 4 > 1, 2, 3); (groups 2 and 3 > 1); picnoses (group 6 > 1, 2, 3, 4, 5), groups 2 and 5 > 1, 3; group 4 > 1, 2, 3, 5); cariorrexis (groups 6 and 4 > 1, 2, 3, 5; groups 2, 3, 5 > 1) and karyolysis (groups 2, 4, and 6 > 1, 3, 5; groups 3 and 5 > 1). The OME cytogenetic instability was associated with H. pylori infection, indicating clastogenic/aneugenic effects, chromosomes alterations, gene expression changes, cytotoxicity and apoptosis. Conclusions The cytogenetic changescan be attributed to several mechanisms that are still unclear, including oxidative damage, as observed by increased catalase and superoxide dismutase expresion. Positive correlations between antioxidant enzymes were found with micronuclei formation, and were negative for picnoses. Thus, the continuous and prolonged omeprazole use induces genetic instability, which can be monitored through cytogenetic analyzes, as precursor for gastric cancer.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Chandan Sarkar
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University Bangladesh, Gopalganj, 8100, Bangladesh
| | - Muhammad Torequl Islam
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University Bangladesh, Gopalganj, 8100, Bangladesh.
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. .,Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador.
| | - Sevgi Durna Daştan
- Department of Biology, Faculty of Science, Sivas Cumhuriyet University, 58140, Sivas, Turkey.,Beekeeping Development Application and Research Center, Sivas Cumhuriyet University, 58140, Sivas, Turkey
| | - Mohammed M Alshehri
- Pharmaceutical Care Department, Ministry of National Guard-Health Affairs, Riyadh, Saudi Arabia
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8
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Omeprazole induces vascular remodeling by mechanisms involving xanthine oxidoreductase and matrix metalloproteinase activation. Biochem Pharmacol 2021; 190:114633. [PMID: 34058185 DOI: 10.1016/j.bcp.2021.114633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 05/14/2021] [Accepted: 05/26/2021] [Indexed: 11/20/2022]
Abstract
Proton pump inhibitors (PPI) are commonly used drugs that may increase the cardiovascular risk by mechanisms not entirely known. We examined whether the PPI omeprazole promotes vascular oxidative stress mediated by xanthine oxidoreductase (XOR) leading to activation of matrix metalloproteinases (MMPs) and vascular remodeling. We studied Wistar rats treated with omeprazole (or vehicle) combined with the XOR inhibitor allopurinol (or vehicle) for four weeks. Systolic blood pressure (SBP) measured by tail-cuff plethysmography was not affected by treatments. Omeprazole treatment increased the aortic cross-sectional area and media/lumen ratio by 25% (P < 0.05). Omeprazole treatment decreased gastric pH and induced vascular remodeling accompanied by impaired endothelium-dependent aortic responses (assessed with isolated aortic ring preparation) to acetylcholine (P < 0.05). Omeprazole increased vascular active MMP-2 expression and activity assessed by gel zymography and in situ zymography, respectively (P < 0.05). Moreover, omeprazole enhanced vascular oxidative stress assessed in situ with the fluorescent dye DHE and with the lucigenin chemiluminescence assay (both P < 0.05). All these biochemical changes caused by omeprazole were associated with increased vascular XOR activity (but not XOR expression assessed by Western blot) and treatment with allopurinol fully prevented them (all P < 0.05). Importantly, treatment with allopurinol prevented the vascular dysfunction and remodeling caused by omeprazole. Our results suggest that the long-term use of omeprazole induces vascular dysfunction and remodeling by promoting XOR-derived reactive oxygen species formation and MMP activation. These findings provide evidence of a new mechanism that may underlie the unfavorable cardiovascular outcomes observed with PPI therapy. Clinical studies are warranted to validate our findings.
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Paz MFCJ, de Alencar MVOB, de Lima RMP, Sobral ALP, do Nascimento GTM, dos Reis CA, Coêlho MDPSDS, do Nascimento MLLB, Gomes Júnior AL, Machado KDC, de Menezes AAPM, de Lima RMT, de Oliveira Filho JWG, Dias ACS, dos Reis AC, da Mata AMOF, Machado SA, Sousa CDDC, da Silva FCC, Islam MT, de Castro e Sousa JM, Melo Cavalcante AADC. Pharmacological Effects and Toxicogenetic Impacts of Omeprazole: Genomic Instability and Cancer. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3457890. [PMID: 32308801 PMCID: PMC7146093 DOI: 10.1155/2020/3457890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/19/2019] [Accepted: 11/21/2019] [Indexed: 12/15/2022]
Abstract
Omeprazole (OME) is commonly used to treat gastrointestinal disorders. However, long-term use of OME can increase the risk of gastric cancer. We aimed to characterize the pharmacological effects of OME and to correlate its adverse effects and toxicogenetic risks to the genomic instability mechanisms and cancer-based on database reports. Thus, a search (till Aug 2019) was made in the PubMed, Scopus, and ScienceDirect with relevant keywords. Based on the study objective, we included 80 clinical reports, forty-six in vitro, and 76 in vivo studies. While controversial, the findings suggest that long-term use of OME (5 to 40 mg/kg) can induce genomic instability. On the other hand, OME-mediated protective effects are well reported and related to proton pump blockade and anti-inflammatory activity through an increase in gastric flow, anti-inflammatory markers (COX-2 and interleukins) and antiapoptotic markers (caspases and BCL-2), glycoprotein expression, and neutrophil infiltration reduction. The reported adverse and toxic effects, especially in clinical studies, were atrophic gastritis, cobalamin deficiencies, homeostasis disorders, polyp development, hepatotoxicity, cytotoxicity, and genotoxicity. This study highlights that OME may induce genomic instability and increase the risk of certain types of cancer. Therefore, adequate precautions should be taken, especially in its long-term therapeutic strategies and self-medication practices.
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Affiliation(s)
- Márcia Fernanda Correia Jardim Paz
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, PI, Brazil
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
| | | | | | - André Luiz Pinho Sobral
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
- University Hospital, Teresina, PI, Brazil
| | | | | | | | | | - Antonio Luiz Gomes Júnior
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
- University Centre UNINOVAFAPI, Teresina, PI, Brazil
| | | | | | - Rosália Maria Torres de Lima
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
| | | | - Ana Carolina Soares Dias
- Laboratory of Genetics and Molecular Biology, Federal University of Maranhão, São Luís, MA, Brazil
| | - Antonielly Campinho dos Reis
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
| | | | | | | | - Felipe Cavalcanti Carneiro da Silva
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, PI, Brazil
- Department of Biological Sciences, Federal University of Piauí, Picos, PI, Brazil
| | - Muhammad Torequl Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | | | - Ana Amélia de Carvalho Melo Cavalcante
- Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, PI, Brazil
- Laboratory of Genetic Toxicity, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, PI, Brazil
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Chu X, Zhang X, Gong X, Zhou H, Cai C. Effects of hyperoxia exposure on the expression of Nrf2 and heme oxygenase-1 in lung tissues of premature rats. Mol Cell Probes 2020; 51:101529. [PMID: 32036037 DOI: 10.1016/j.mcp.2020.101529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/15/2020] [Accepted: 01/31/2020] [Indexed: 12/21/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic lung disease with long-term sequelae including neurodevelopmental delay. Although the precise mechanism of BPD is not well defined, oxidative stress is thought to be involved in the pathogenesis process of BPD. Nrf2 (Nuclear factor erythroid 2-related factor 2)-Keap1 (Kelch-like ECH associated protein 1)-ARE (Antioxidant Reaction Elements) signaling pathway is one of the main protective mechanisms of BPD, which can induce cytoprotective gene expression, such as heme oxygenase-1 (HO-1), nicotinamide quinone oxidoreductase 1 (NQO1) and so on. We exposed premature rats to hyperoxia and identified lung developmental retardation in preterm rats, with similar pathological changes as BPD. The expression of Nrf2 and HO-1 in premature rats was significantly higher after hyperoxia exposure. To explore the changes of Nrf2 and HO-1 in premature rats and enhance their beneficial functions may provide new treatment strategies for infants at risk of BPD.
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Affiliation(s)
- Xiaoyun Chu
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
| | - Xiaoyue Zhang
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
| | - Xiaohui Gong
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
| | - Huilin Zhou
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
| | - Cheng Cai
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
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Abdel-Gaber SA, Geddawy A, Moussa RA. The hepatoprotective effect of sitagliptin against hepatic ischemia reperfusion-induced injury in rats involves Nrf-2/HO-1 pathway. Pharmacol Rep 2019; 71:1044-1049. [PMID: 31600635 DOI: 10.1016/j.pharep.2019.06.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/23/2019] [Accepted: 06/13/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Oxidative stress and inflammation play a key role in the development of hepatic ischemia reperfusion (HIR)-induced injury. Nuclear factor-erythroid 2-related factor-2 (Nrf-2) is a main regulator of numerous genes, encoding cytoprotective molecules including heme oxygenase-1 (HO-1). Sitagliptin (Sit) is an incretin enhancer acting via inhibition of dipeptidyl peptidase-4 (DPP-4) enzyme. This study was undertaken to investigate the ability of Sit to prevent the hepatic pathological changes of HIR induced injury and to modify Nrf-2 and its target HO-1. METHODS Pringle's maneuver was used to induce total HIR in adult male rats that were randomly assigned into 4 groups. Group1 (sham-operated control), Group 2 (sham-operated + Sit-control group), Group 3 (HIR non-treated), and Group 4 (HIR + Sit). Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities together with hepatic contents of malondialdhyde (MDA), nitric oxide (NO) and reduced glutathione (GSH) and superoxide dismutase (SOD) activity were evaluated. Hepatic tissue mRNA of Nrf-2 and protein content of HO-1 along with histopathological examination and scoring of hepatic injury were performed. RESULTS Sit caused a significant reduction in ALT and AST activities together with attenuation of HIR-induced histopathological liver injury. Effect of Sit was associated with decreased hepatic level of MDA and NO with increased GSH level and SOD activity. Non-treated rats with HIR showed an increase in Nrf-2 mRNA expression and HO-1 content in hepatic tissue which was further increased by Sit treatment. CONCLUSIONS These results indicate that hepatoprotective activity of Sit against HIR is attributed at least in part to modulation of Nrf-2/ HO-1 signaling pathway.
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Affiliation(s)
- Seham A Abdel-Gaber
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Ayman Geddawy
- Department of Pharmacology, Faculty of Medicine, Minia University, Minia, Egypt; Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia.
| | - Rabab A Moussa
- Department of Pathology, Faculty of Medicine, Minia University, Minia, Egypt
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12
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Chu XY, Cai C, Zhang XY, Zhou HL, Sun JF, Weng BW. [Effect of hyperoxic exposure on the expression of heme oxygenase-1 and glutamate-L-cysteine ligase catalytic subunit in lung tissue of preterm rats]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2019; 21:594-600. [PMID: 31208516 PMCID: PMC7389583 DOI: 10.7499/j.issn.1008-8830.2019.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To study the effect of hyperoxic exposure on the dynamic expression of heme oxygenase-1 (HO-1) and glutamate-L-cysteine ligase catalytic subunit (GCLC) in the lung tissue of preterm neonatal rats. METHODS Cesarean section was performed for rats on day 21 of gestation to obtain 80 preterm rats, which were randomly divided into air group and hyperoxia group after one day of feeding. The rats in the air group were housed in room air under atmospheric pressure, and those in the hyperoxia group were placed in an atmospheric oxygen tank (oxygen concentration 85%-95%) in the same room. Eight rats each were selected from each group on days 1, 4, 7, 10, and 14, and lung tissue samples were collected. Hematoxylin and eosin staining was used to observe the pathological changes of lung tissue at different time points after air or hyperoxic exposure. Western blot and RT-qPCR were used to measure the protein and mRNA expression of HO-1 and GCLC in the lung tissue of preterm rats at different time points after air or hyperoxic exposure. RESULTS Compared with the air group, the hyperoxia group had a significant reduction in the body weight (P<0.05). Compared with the air group, the hyperoxia group had structural disorder, widening of alveolar septa, a reduction in the number of alveoli, and simplification of the alveoli on the pathological section of lung tissue. Compared with the air group, the hyperoxia group had significantly lower relative mRNA expression of HO-1 in the lung tissue on day 7 and significantly higher expression on days 10 and 14 (P<0.05). Compared with the air group, the hyperoxia group had significantly lower mRNA expression of GCLC in the lung tissue on days 1, 4, and 7 and significantly higher expression on day 10 (P<0.05). Compared with the air group, the hyperoxia group had significantly higher protein expression of HO-1 in the lung tissue on all days, and the protein expression of GCLC had same results as HO-1, except on day 1 (P<0.05). CONCLUSIONS Hyperoxia exposure may lead to growth retardation and lung developmental retardation in preterm rats. Changes in the protein and mRNA expression of HO-1 and GCLC in the lung tissue of preterm rats may be associated with the pathogenesis of hyperoxia-induced lung injury in preterm rats.
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Affiliation(s)
- Xiao-Yun Chu
- Department of Neonatology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200062, China.
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Aletras AJ, Trilivas I, Christopoulou ME, Drakouli S, Georgakopoulos CD, Pharmakakis N. UVB-mediated down-regulation of proteasome in cultured human primary pterygium fibroblasts. BMC Ophthalmol 2018; 18:328. [PMID: 30563490 PMCID: PMC6299496 DOI: 10.1186/s12886-018-0987-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 11/30/2018] [Indexed: 11/16/2022] Open
Abstract
Background Pterygium is a condition characterized by epithelial overgrowth of the cornea, inflammatory cell infiltration and an abnormal extracellular matrix accumulation. Chronic UV exposure is considered as a pathogenic factor of this disease. Proteasome is an intracellular multi-subunit protease complex that degrades intracellular proteins. Among proteasome subunits the β5 (PSMB5), bearing chymotrypsin-like activity. It is considered as the main proteasome subunit and its expression is mediated by Nrf2-ARE pathway in many cell types. This study investigates the expression of PSMB5 in pterygium and the effect of UVB irradiation on its expression and activity in pterygium fibroblasts. Methods Normal conjunctival and pterygium specimens were obtained from the bulbar conjunctiva of patients undergoing cataract surgery and from patients with pterygium undergoing surgical removal of primary tissue, respectively. Fibroblasts were isolated upon treatment of specimens with clostridium collagenase. The expression of PSMB5 and Nrf2 in tissues and cells was ascertained by RT-PCR analysis and western blotting. Cell survival was measured by the MTT method and the proteasome chymotrypsin-like activity was determined by fluorometry. Results RT-PCR analysis showed that the expression of PSMB5 was significantly lower in pterygium than in normal conjunctiva. The expression of PSMB5 was mediated by the Nrf2/ARE pathway as indicated by using the Nrf2 activator Oltipraz. The expression of PSMB5 and Nrf2 by pterygium fibroblasts was suppressed in a dose dependent manner following UVB radiation of 0–50 mJ/cm2 doses. The expression of PSMB5, but not of Nrf2, remained at almost the control levels, when UVB exposure was performed after pre-incubation of cells with the src kinases inhibitor PP2. UVB irradiation had very low deleterious effect on fibroblasts survival, while it did not affect the proteasome chymotrypsin-like activity. Conclusion In pterygium fibroblasts, UVB exposure leads to down-regulation of Nrf2/ARE-mediated PSMB5 gene expression, in which src kinases may be implicated. This effect may be partially responsible for the lower expression of PSMB5 detected in pterygium as compared to normal conjunctiva.
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Affiliation(s)
- Alexios J Aletras
- Laboratory of Biochemistry, Department of Chemistry, University of Patras, 26 504, Patras, Greece.
| | - Ioannis Trilivas
- Department of Opthalmology, Medical School, University of Patras, Patras, Greece
| | | | - Sotiria Drakouli
- Laboratory of Biochemistry, Department of Chemistry, University of Patras, 26 504, Patras, Greece.,Present address: Laboratory of Biochemistry, Faculty of Medicine, University of Thessaly, Volos, Greece
| | | | - Nikolaos Pharmakakis
- Department of Opthalmology, Medical School, University of Patras, Patras, Greece
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Leflunomide attenuates oxidative stress in fetal human lung endothelial cells via superoxide dismutase 2 and catalase. Biochem Biophys Res Commun 2018; 503:2009-2014. [PMID: 30077371 DOI: 10.1016/j.bbrc.2018.07.149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 07/30/2018] [Indexed: 12/30/2022]
Abstract
Hyperoxia-induced oxidative stress contributes to the pathogenesis of bronchopulmonary dysplasia (BPD), the most common respiratory morbidity of preterm infants. Importantly, the disease lack specific therapies and is associated with long-term cardio-pulmonary and neurodevelopmental morbidities, signifying the need to discover novel therapies and decrease the disease burden. We and others have demonstrated that leflunomide, a food and drug administration approved drug to treat humans with rheumatoid arthritis, increases the expression of the anti-oxidant enzymes, NAD(P)H quinone dehydrogenase 1 (NQO1), catalase, and superoxide dismutase (SOD). However, whether this drug can decrease oxidative stress in fetal human pulmonary arterial endothelial cells (HPAECs) is unknown. Therefore, we tested the hypothesis that leflunomide will decrease hyperoxia-induced oxidative stress by upregulating these anti-oxidant enzymes in HPAECs. Leflunomide decreased hydrogen peroxide (H2O2) levels and increased the mRNA and protein levels of catalase, NQO1, and SOD2 in HPAECs at basal conditions. Further, leflunomide-treated cells continued to have decreased H2O2 and increased SOD2 levels upon hyperoxia exposure. Leflunomide did not affect the expression of other anti-oxidant enzymes, including hemoxygenase-1 and SOD1. AhR-knockdown experiments suggested that leflunomide regulated NQO1 levels via AhR-dependent mechanisms and H2O2, catalase, and SOD2 levels via AhR-independent mechanisms. Collectively, the results support the hypothesis that leflunomide decreases oxidative stress in HPAECs via SOD2-and catalase-dependent, but AhR- and NQO1-independent mechanisms. Our findings indicate that leflunomide is a potential drug for the management of BPD in preterm infants.
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Chen M, Jiang L, Li Y, Bai G, Zhao J, Zhang M, Zhang J. Hydrogen protects against liver injury during CO 2 pneumoperitoneum in rats. Oncotarget 2017; 9:2631-2645. [PMID: 29416797 PMCID: PMC5788665 DOI: 10.18632/oncotarget.23498] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/05/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of the current study was to identify the protective effect of hydrogen gas against liver injury during CO2 pneumoperitoneum. Rats were randomly divided into three groups: control group (C group), pneumoperitoneum group (P15 group) and hydrogen group (H2 group). Rats in the C group were subjected to anesthesia for 90 min. Rats in the P15 group received an abdominal insufflation of CO2 for 90 min at an intra-abdominal pressure of 15 mmHg. Rats in the H2 group received a hypodermic injection of hydrogen gas (0.2 mL/kg) and after 10 min they received an abdominal insufflation of CO2 for 90 min at an intra-abdominal pressure of 15 mmHg. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were measured to evaluate liver function. Malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione (GSH) content were measured to evaluate oxidative stress. Nuclear factor E2-related factor 2 (Nrf2) and Nrf2 downstream target genes, apoptosis-related genes and inflammatory cytokine mRNA and protein expression were detected. Liver injury was detected under the microscope. Our results revealed that liver function, antioxidants content, inflammation and liver injury were improved after hydrogen preconditioning in H2 group compared with P15 group. Overall, our results revealed that subcutaneous hydrogen injection could exert a protective effect against liver injury during CO2 pneumoperitoneum through reducing oxidative stress, cell apoptosis and inflammatory cytokines release.
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Affiliation(s)
- Mingzi Chen
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Lihong Jiang
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yue Li
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Ge Bai
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Jinghua Zhao
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Ming Zhang
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Jiantao Zhang
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
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Chen H, Tang X, Zhou B, Zhou Z, Xu N, Wang Y. A ROS-mediated mitochondrial pathway and Nrf2 pathway activation are involved in BDE-47 induced apoptosis in Neuro-2a cells. CHEMOSPHERE 2017; 184:679-686. [PMID: 28628905 DOI: 10.1016/j.chemosphere.2017.06.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/27/2017] [Accepted: 06/03/2017] [Indexed: 05/23/2023]
Abstract
Our previous study showed that 2,2'-,4,4'-tetrabromodiphenyl ether (BDE-47) is cytotoxic and induces apoptosis in Neuro-2a cells. In the present study, we aimed to investigate whether nuclear factor (erythroid-derived 2)-like 2 (Nrf2), an antioxidant transcriptional regulator of oxidative stress and apoptosis, is involved in this process. The results of toxicological experiments showed that BDE-47 decreased the cellular mitochondrial membrane potential (MMP) and increased cytochrome c release to the cytoplasm, followed by an increase in intracellular caspase-9 and caspase-3 activity, suggesting that a mitochondrial pathway was involved in the apoptotic process. Intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) contents as well as the oxidized/reduced glutathione (GSSG/GSH) ratio were elevated simultaneously in a concentration-dependent manner, indicating that BDE-47 induced oxidative stress. The ROS scavenger N-acetyl-l-cysteine (NAC) not only alleviated the oxidative stress but also blocked apoptosis and the decrease in MMP induced by BDE-47, indicating that the overproduction of ROS participates in a mitochondria-mediated apoptotic pathway. Moreover, BDE-47 stimulated the transcriptional induction of the Nrf-2 gene and induced mRNA expression of the main antioxidant response genes in the Nrf-2 pathway, including heme oxygenase 1 (HO-1), NAD(P)H/quinone oxidoreductase-1 (NQO1), glutamate-cysteine ligase modifier (GCLM) and glutathione peroxidase (GPX). Additionally, NAC and the p38 mitogen activated protein kinase (MAPK) signaling pathway inhibitor SB 203580 greatly reduced Nrf2 and HO-1 induction. We hypothesized that the ROS mediated mitochondrial pathway is involved in the BDE-47-induced apoptosis in Neuro-2a cells and that the Nrf2 pathway helps protect Neuro-2a cells from BDE-47-induced apoptosis.
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Affiliation(s)
- Hongmei Chen
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; Key Laboratory of Xinjiang Endemic Phytomedicine Resources, Ministry of Education, Pharmacology Department, School of Pharmacy, Shihezi University, Shihezi 832002, China.
| | - Xuexi Tang
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Bin Zhou
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Zhongyuan Zhou
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - Ningning Xu
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
| | - You Wang
- Department of Marine Ecology, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China.
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