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Yang F, Smith MJ, Siow RCM, Aarsland D, Maret W, Mann GE. Interactions between zinc and NRF2 in vascular redox signalling. Biochem Soc Trans 2024; 52:269-278. [PMID: 38372426 PMCID: PMC10903478 DOI: 10.1042/bst20230490] [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: 10/09/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Abstract
Recent evidence highlights the importance of trace metal micronutrients such as zinc (Zn) in coronary and vascular diseases. Zn2+ plays a signalling role in modulating endothelial nitric oxide synthase and protects the endothelium against oxidative stress by up-regulation of glutathione synthesis. Excessive accumulation of Zn2+ in endothelial cells leads to apoptotic cell death resulting from dysregulation of glutathione and mitochondrial ATP synthesis, whereas zinc deficiency induces an inflammatory phenotype, associated with increased monocyte adhesion. Nuclear factor-E2-related factor 2 (NRF2) is a transcription factor known to target hundreds of different genes. Activation of NRF2 affects redox metabolism, autophagy, cell proliferation, remodelling of the extracellular matrix and wound healing. As a redox-inert metal ion, Zn has emerged as a biomarker in diagnosis and as a therapeutic approach for oxidative-related diseases due to its close link to NRF2 signalling. In non-vascular cell types, Zn has been shown to modify conformations of the NRF2 negative regulators Kelch-like ECH-associated Protein 1 (KEAP1) and glycogen synthase kinase 3β (GSK3β) and to promote degradation of BACH1, a transcriptional suppressor of select NRF2 genes. Zn can affect phosphorylation signalling, including mitogen-activated protein kinases (MAPK), phosphoinositide 3-kinases and protein kinase C, which facilitate NRF2 phosphorylation and nuclear translocation. Notably, several NRF2-targeted proteins have been suggested to modify cellular Zn concentration via Zn exporters (ZnTs) and importers (ZIPs) and the Zn buffering protein metallothionein. This review summarises the cross-talk between reactive oxygen species, Zn and NRF2 in antioxidant responses of vascular cells against oxidative stress and hypoxia/reoxygenation.
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Affiliation(s)
- Fan Yang
- School of Cardiovascular and Metabolic Medicine and Sciences, King's British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, 150 Stamford Street, London SE1 9NH, U.K
| | - Matthew J Smith
- School of Cardiovascular and Metabolic Medicine and Sciences, King's British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, 150 Stamford Street, London SE1 9NH, U.K
| | - Richard C M Siow
- School of Cardiovascular and Metabolic Medicine and Sciences, King's British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, 150 Stamford Street, London SE1 9NH, U.K
| | - Dag Aarsland
- Department of Old Age Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College, London, U.K
- Centre for Age-Related Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College, London, U.K
| | - Giovanni E Mann
- School of Cardiovascular and Metabolic Medicine and Sciences, King's British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, 150 Stamford Street, London SE1 9NH, U.K
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Gać P, Czerwińska K, Macek P, Jaremków A, Mazur G, Pawlas K, Poręba R. The importance of selenium and zinc deficiency in cardiovascular disorders. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 82:103553. [PMID: 33238203 DOI: 10.1016/j.etap.2020.103553] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 06/11/2023]
Abstract
Cardiovascular diseases often linked with lifestyle are among the main causes of death, especially in the elderly population. The role of trace elements in health and disease has been emphasized in multiple scientific research. Moreover, supplementation of trace elements to improve health is becoming increasingly popular. The following paper presents current views on the relationship between the concentration of trace elements such as selenium and zinc in the body, as well as morphology and function of the cardiovascular system. Research discussing the effect of selenium and zinc supplementation on the function of the heart and blood vessels was also reviewed. The relationship between selenium and zinc concentration and morphology and function of the cardiovascular system is equally unclear, and therefore there is currently no scientific evidence for its supplementation for preventing cardiovascular diseases. It seems justified to continue scientific research on this subject due to the small number of experimental studies available on the topic of selenium and zinc deficiency and their impact on the cardiovascular system.
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Affiliation(s)
- Paweł Gać
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland.
| | - Karolina Czerwińska
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Piotr Macek
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
| | - Aleksandra Jaremków
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Grzegorz Mazur
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
| | - Krystyna Pawlas
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Rafał Poręba
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
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Wang Y, Zhao H, Liu Y, Guo M, Tian Y, Huang P, Xing M. Arsenite induce neurotoxicity of common carp: Involvement of blood brain barrier, apoptosis and autophagy, and subsequently relieved by zinc (Ⅱ) supplementation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 232:105765. [PMID: 33535132 DOI: 10.1016/j.aquatox.2021.105765] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/24/2020] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
Arsenic pollution is a common threat to aquatic ecosystems. The effects of chronic exposure to arsenite on the brains of aquatic organisms are unknown. This study was designed to evaluate arsenic-induced brain damage in common carp (Cyprinus carpio) and the ameliorating effects of divalent zinc ion (Zn2+) supplementation from the aspects of oxidative stress (OxS), tight junction (TJ), apoptosis and autophagy. After arsenite exposure (2.83 mg/L) for 30 days, oxidative damage to the brain was determined, as indicated by inhibited antioxidants system (catalase-superoxide dismutase system, and glutathione system) and elevated levels of biomacromolecule peroxidation (malondialdehyde and 8-hydroxydeoxyguanosine). Moreover, we also found functional damage to the brain as suggested by injuries to the blood-brain barrier (decreases in tight junction) and nerve conduction (depletion of AChE). Mechanisticly, apoptotic and autophagic cell death were indicated by typical morphologies including karyopyknosis and autophagosome, accompanying by key bio-indicators (Bcl-2, caspase and autophagy related gene family proteins). In contrast, the coadministration of Zn2+ (1 mg/L) with arsenite effectively alleviated this damage as suggested by the recovery of the aforementioned bioindicators. This study provides new insight into the brain toxicity caused by arsenite and suggests the application of zinc preparations in the aquatic pollution of arsenic.
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Affiliation(s)
- Yu Wang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Hongjing Zhao
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Yachen Liu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Menghao Guo
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Ye Tian
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China
| | - Puyi Huang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
| | - Mingwei Xing
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150040, Heilongjiang, PR China.
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Qi Z, Liu KJ. The interaction of zinc and the blood-brain barrier under physiological and ischemic conditions. Toxicol Appl Pharmacol 2019; 364:114-119. [PMID: 30594689 PMCID: PMC6331270 DOI: 10.1016/j.taap.2018.12.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/02/2018] [Accepted: 12/25/2018] [Indexed: 12/30/2022]
Abstract
Zinc is the second most abundant metal in human and serves as an essential trace element in the body. During the past decades, zinc has been found to play important roles in central nervous system, such as the development of neurons and synaptic activities. An imbalance of zinc is associated with brain diseases. The blood-brain barrier (BBB) maintains the homeostasis of the microenvironment, regulating the balance of zinc in the brain. A compromised BBB is the main cause of severe complications in cerebral ischemic patients, such as hemorrhage transformation, inflammation and edema. Recent studies reported that zinc in the brain may be a potential target for integrative protection against ischemic brain injury. Although zinc has long been regarded as important transmitters in central nervous system, the critical role of zinc dyshomeostasis in damage to the BBB has not been fully recognized. In this review, we summarize the role of the BBB in regulating homeostasis of zinc in physiological conditions and the effects of changes in zinc levels on the permeability of the BBB in cerebral ischemia. The integrity of BBB maintains the homeostasis of zinc in pathological conditions, while the balance of zinc in the brain and the circulation maintains the normal function of the BBB. Interrupting the zinc/BBB system will disturb the microenvironment in the brain, leading to pathological diseases. In stroke patients, zinc may serve as a potential target for protecting the BBB and reducing hemorrhage transformation, inflammation and edema.
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Affiliation(s)
- Zhifeng Qi
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Ke Jian Liu
- Cerebrovascular Diseases Research Institute, Xuanwu Hospital of Capital Medical University, Beijing, China; Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM, USA.
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Real-time impedance analysis of host cell response to meningococcal infection. J Microbiol Methods 2010; 84:101-8. [PMID: 21078346 DOI: 10.1016/j.mimet.2010.11.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 10/28/2010] [Accepted: 11/07/2010] [Indexed: 11/21/2022]
Abstract
Measuring cell proliferation and cell death during bacterial infection involves performing end-point assays that represent the response at a single time point. A new technology from Roche Applied Science and ACEA Biosciences allows continuous monitoring of cells in real-time using specialized cell culture microplates containing micro-electrodes. The xCELLigence system enables continuous measurement and quantification of cell adhesion, proliferation, spreading, cell death and detachment, thus creating a picture of cell function during bacterial infection. Furthermore, lag and log phases can be determined to estimate optimal times to infect cells. In this study we used this system to provide valuable insights into cell function in response to several virulence factors of the meningitis causing pathogen Neisseria meningitidis, including the lipopolysaccharide (LPS), the polysaccharide capsule and the outer membrane protein Opc. We observed that prolonged time of infection with pathogenic Neisseria strains led to morphological changes including cell rounding and loss of cell-cell contact, thus resulting in changed electrical impedance as monitored in real-time. Furthermore, cell function in response to 14 strains of apathogenic Neisseria spp. (N. lactamica and N. mucosa) was analyzed. In contrast, infection with apathogenic N. lactamica isolates did not change electrical impedance monitored for 48 h. Together our data show that this system can be used as a rapid monitoring tool for cellular function in response to bacterial infection and combines high data acquisition rates with ease of handling.
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Binnebösel M, Grommes J, Koenen B, Junge K, Klink CD, Stumpf M, Ottinger AP, Schumpelick V, Klinge U, Krones CJ. Zinc deficiency impairs wound healing of colon anastomosis in rats. Int J Colorectal Dis 2010; 25:251-7. [PMID: 19859719 DOI: 10.1007/s00384-009-0831-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/14/2009] [Indexed: 02/04/2023]
Abstract
BACKGROUND Anastomotic leakage is a relevant surgical complication. The aim of the study was to investigate the influence of a controlled preoperative zinc deficiency on the extracellular matrix composition of colon anastomosis. MATERIALS AND METHODS Forty male Wistar rats were randomized to either a zinc deficiency group (n = 20) or a control group (n = 20). In each animal, a transverse colonic end-to-end anastomosis was performed. On postoperative day 7, the surface of the mucosal villi, expression of matrix metalloproteinases (MMP) 2, 8, 9, and 13, and both the number of proliferating cells (Ki67) and apoptotic cells, as well as the collagen types I/III ratio were analyzed. Within the anastomotic area the mesenterial region and the antimesenterial region were analyzed separately. RESULTS In each group, one anastomotic leakage was detected. Expression of both MMP 2, 9, and 13 was significantly higher, and expression of Ki67 was significantly reduced in the zinc deficient group both mesenterial and antimesenterial. The collagen types I/III ratio was reduced in the zinc deficiency group by trend, without statistical significance neither mesenterial nor antimesenterial. Likewise, zinc deficiency affected neither the expression of MMP 8 nor the rate of apoptotic cells, respectively. Analyses of the surface of the mucosal villi revealed no significant differences comparing the groups with neither mesenterial nor antimesenterial. CONCLUSIONS Our study constitutes the known negative effect of zinc deficiency on wound healing. Zinc deficiency significantly increased the activity of MMPs (2, 9, and 13), caused a reduced collagen type I/III ratio, and delayed cell proliferation and quality of intestinal wound healing.
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Affiliation(s)
- Marcel Binnebösel
- Department of Surgery, RWTH Aachen University Hospital, Pauwelsstr 30, 52074 Aachen, Germany.
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Song Y, Xue Y, Liu X, Wang P, Liu L. Effects of acute exposure to aluminum on blood–brain barrier and the protection of zinc. Neurosci Lett 2008; 445:42-6. [DOI: 10.1016/j.neulet.2008.08.081] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Revised: 08/19/2008] [Accepted: 08/27/2008] [Indexed: 11/29/2022]
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Chappell RL, Anastassov I, Lugo P, Ripps H. Zinc-mediated feedback at the synaptic terminals of vertebrate photoreceptors. Exp Eye Res 2008; 87:394-7. [PMID: 18638476 DOI: 10.1016/j.exer.2008.06.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Revised: 06/11/2008] [Accepted: 06/22/2008] [Indexed: 11/16/2022]
Abstract
There is mounting evidence that zinc release from glutamatergic nerve terminals serves as a neuromodulator at synaptic sites within the retina and CNS. However, it has not been possible to reliably measure the concentration of zinc co-released with glutamate in the confines of the synaptic cleft. Thus, much of the evidence supporting this view derives from electrophysiological studies showing the modulatory effects of exogenous zinc on the membrane currents of ligand- and voltage-gated channels. In the present study, we took advantage of the unique properties of the glutamatergic photoreceptor terminal to demonstrate a feedback signal mediated by endogenous zinc at the synaptic sites from which it is discharged. Through its ability to block voltage-gated calcium channels in the photoreceptor terminal, zinc suppresses the radial dark current of the visual cell, and reduces its release of glutamate. It follows that chelation of extracellular zinc, e.g., with histidine, will lead to an increase both in the dark current and in the release of glutamate, changes that result in an enhancement of the light-evoked a-wave of the ERG and can account for the b-wave enhancement observed previously after zinc chelation when inner retinal responses were not blocked by aspartate.
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Dimitropoulou P, Nayee S, Liu JF, Demetriou L, van Tongeren M, Hepworth SJ, Muir KR. Dietary zinc intake and brain cancer in adults: a case–control study. Br J Nutr 2008; 99:667-73. [PMID: 17908366 DOI: 10.1017/s0007114507831692] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Little is known about the aetiology of brain tumours. One putative factor suggested from animal models is a protective effect of dietary Zn. We tested the hypothesis that increased compared with low dietary Zn intake is protective against brain tumour development. We conducted a population-based case–control study in the UK, of adults aged 18–69 years, between 2001 and 2004 aiming to identify possible risk factors. Dietary information was collected from 637 cases diagnosed with a glioma or meningioma, and 876 controls. Data were obtained from a self-completed FFQ. Multivariate logistic regression analysis was conducted, adjusting for socio-demographic factors, season of questionnaire return, multivitamin supplementation and energy intake. Although a weak protective effect was observed for the third quartile of intake (normal compared with low intake) in the meningioma group, this was limited to the specific brain tumour subtype and quartile, and was not significant after also adjusting for intake of other elements. Overall there was no significant effect of Zn intake. No association or dose–response relationship was observed between increased compared with low Zn intake and risk of glioma or meningioma.
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Affiliation(s)
- P Dimitropoulou
- Division of Epidemiology, University of Nottingham Medical School, E Floor, Queen's Medical Centre, Nottingham NG7 2UH, UK.
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Paul-Satyaseela M, Xie Y, Di Cello F, Kim KS. Responses of brain and non-brain endothelial cells to meningitis-causing Escherichia coli K1. Biochem Biophys Res Commun 2006; 342:81-5. [PMID: 16472773 DOI: 10.1016/j.bbrc.2006.01.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 01/25/2006] [Indexed: 12/01/2022]
Abstract
Bacterial interaction with specific host tissue may contribute to its propensity to cause an infection in a particular site. In this study, we examined whether meningitis-causing Escherichia coli K1 interaction with human brain microvascular endothelial cells, which constitute the blood-brain barrier, differed from its interaction with non-brain endothelial cells derived from skin and umbilical cord. We showed that E. coli K1 association was significantly greater with human brain microvascular endothelial cells than with non-brain endothelial cells. In addition, human brain microvascular endothelial cells maintained their morphology and intercellular junctional resistance in response to E. coli K1. In contrast, non-brain endothelial cells exhibited decreased transendothelial electrical resistance and detachment from the matrix upon exposure to E. coli K1. These different responses of brain and non-brain endothelial cells to E. coli K1 may form the basis of E. coli K1's propensity to cause meningitis.
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Affiliation(s)
- Maneesh Paul-Satyaseela
- Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, 600 North Wolfe St., Park 256, Baltimore, MD 21287, USA.
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