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Jin D, Wei X, He Y, Zhong L, Lu H, Lan J, Wei Y, Liu Z, Liu H. The nutritional roles of zinc for immune system and COVID-19 patients. Front Nutr 2024; 11:1385591. [PMID: 38706559 PMCID: PMC11066294 DOI: 10.3389/fnut.2024.1385591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/09/2024] [Indexed: 05/07/2024] Open
Abstract
Zinc (Zn) is a vital micronutrient that strengthens the immune system, aids cellular activities, and treats infectious diseases. A deficiency in Zn can lead to an imbalance in the immune system. This imbalance is particularly evident in severe deficiency cases, where there is a high susceptibility to various viral infections, including COVID-19 caused by SARS-CoV-2. This review article examines the nutritional roles of Zn in human health, the maintenance of Zn concentration, and Zn uptake. As Zn is an essential trace element that plays a critical role in the immune system and is necessary for immune cell function and cell signaling, the roles of Zn in the human immune system, immune cells, interleukins, and its role in SARS-CoV-2 infection are further discussed. In summary, this review paper encapsulates the nutritional role of Zn in the human immune system, with the hope of providing specific insights into Zn research.
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Affiliation(s)
- Di Jin
- Guangxi Key Laboratory of Metabolic Reprogramming and Intelligent Medical Engineering for Chronic Diseases, Department of Laboratory Medicine, Guangxi Clinical Research Center for Diabetes and Metabolic Diseases, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Xinran Wei
- Guangxi Key Laboratory of Metabolic Reprogramming and Intelligent Medical Engineering for Chronic Diseases, Department of Laboratory Medicine, Guangxi Clinical Research Center for Diabetes and Metabolic Diseases, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Yunyi He
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Luying Zhong
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Huijie Lu
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Jiaxin Lan
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Yuting Wei
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Zheng Liu
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
| | - Hongbo Liu
- Guangxi Key Laboratory of Metabolic Reprogramming and Intelligent Medical Engineering for Chronic Diseases, Department of Laboratory Medicine, Guangxi Clinical Research Center for Diabetes and Metabolic Diseases, The Second Affiliated Hospital of Guilin Medical University, Guilin, China
- College of Medical Laboratory Science, Guilin Medical University, Guilin, China
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2
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Yang F, Smith MJ, Siow RC, 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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3
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Isaev NK, Stelmashook EV, Genrikhs EE, Onishchenko GE. Interaction between mitophagy, cadmium and zinc. J Trace Elem Med Biol 2023; 79:127230. [PMID: 37290313 DOI: 10.1016/j.jtemb.2023.127230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023]
Abstract
Mitophagy is the selective degradation of mitochondria by autophagy. This process is considered to be one of the stages of mitochondrial quality control, as a result of which damaged depolarized mitochondria are eliminated, thus limiting the formation of reactive oxygen species and the release of apoptogenic factors. Selective degradation of mitochondria by autophagy is one of the main ways to protect cells from cadmium toxicity, which results in dysfunction of the mitochondrial electron transport chain, leading to electron leakage, production of reactive oxygen species and cells death. However, excessive autophagy can be dangerous for cells. Currently, the participation of cadmium ions in normal physiological processes has not been detected. Zn2+, unlike Cd2+, regulate the activity of a large number of functionally important proteins, including transcription factors, enzymes, and adapters. It has been shown that Zn2+ not only participate in autophagy, but are also crucial for basal or induced autophagy. It is likely that zinc drugs can be used to reduce the cadmium toxicity and in the regulation of mithophagy.
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Affiliation(s)
- Nickolay K Isaev
- M.V. Lomonosov Moscow State University, Moscow, Russia; Research Center of Neurology, Moscow, Russia.
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4
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Smith MJ, Yang F, Griffiths A, Morrell A, Chapple SJ, Siow RCM, Stewart T, Maret W, Mann GE. Redox and metal profiles in human coronary endothelial and smooth muscle cells under hyperoxia, physiological normoxia and hypoxia: Effects of NRF2 signaling on intracellular zinc. Redox Biol 2023; 62:102712. [PMID: 37116256 PMCID: PMC10165141 DOI: 10.1016/j.redox.2023.102712] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023] Open
Abstract
Zinc is an important component of cellular antioxidant defenses and dysregulation of zinc homeostasis is a risk factor for coronary heart disease and ischemia/reperfusion injury. Intracellular homeostasis of metals, such as zinc, iron and calcium are interrelated with cellular responses to oxidative stress. Most cells experience significantly lower oxygen levels in vivo (2-10 kPa O2) compared to standard in vitro cell culture (18kPa O2). We report the first evidence that total intracellular zinc content decreases significantly in human coronary artery endothelial cells (HCAEC), but not in human coronary artery smooth muscle cells (HCASMC), after lowering of O2 levels from hyperoxia (18 kPa O2) to physiological normoxia (5 kPa O2) and hypoxia (1 kPa O2). This was paralleled by O2-dependent differences in redox phenotype based on measurements of glutathione, ATP and NRF2-targeted protein expression in HCAEC and HCASMC. NRF2-induced NQO1 expression was attenuated in both HCAEC and HCASMC under 5 kPa O2 compared to 18 kPa O2. Expression of the zinc efflux transporter ZnT1 increased in HCAEC under 5 kPa O2, whilst expression of the zinc-binding protein metallothionine (MT) decreased as O2 levels were lowered from 18 to 1 kPa O2. Negligible changes in ZnT1 and MT expression were observed in HCASMC. Silencing NRF2 transcription reduced total intracellular zinc under 18 kPa O2 in HCAEC with negligible changes in HCASMC, whilst NRF2 activation or overexpression increased zinc content in HCAEC, but not HCASMC, under 5 kPa O2. This study has identified cell type specific changes in the redox phenotype and metal profile in human coronary artery cells under physiological O2 levels. Our findings provide novel insights into the effect of NRF2 signaling on Zn content and may inform targeted therapies for cardiovascular diseases.
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Affiliation(s)
- Matthew J Smith
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Alexander Griffiths
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Alexander Morrell
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Sarah J Chapple
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Richard C M Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Theodora Stewart
- Research Management & Innovation Directorate (RMID), King's College London, UK
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course & Population Sciences, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
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5
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Zhang H, Wang S, Gu X, Qiu H, Zhang Y. L-shaped association between dietary zinc intake and the risk of developing cardiovascular disease in Chinese adults: A cohort study. Front Nutr 2023; 10:1032048. [PMID: 37006929 PMCID: PMC10064069 DOI: 10.3389/fnut.2023.1032048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/27/2023] [Indexed: 03/19/2023] Open
Abstract
Background Although the association of zinc (Zn) with cardiovascular disease (CVD) has been studied, no consensus has been reached on this relationship, particularly dietary Zn intake. The purpose of this study was to assess the effect of dietary Zn intake on the risk of CVD and to analyze whether this effect varied according to zinc consumption using representative data from China. Methods 11,470 adults from the China Health and Nutrition Survey (CHNS) were eventually enrolled. The dietary information was collected by the 3 day 24-h dietary recalls combined with dietary weighting method. CVD was defined as participants with self-reported physician-diagnosed apoplexy and/or myocardial infarction during the follow-up. Cox regression was used to calculate the hazard ratios (HRs) of CVD with 95% confidence intervals. Restricted cubic spline function plus Cox regression was used to visualize the influence trend of dietary Zn intake on new-onset CVD and to test whether this trend is linear. 2-segment Cox regression was established to address the nonlinear trend. Results 431 participants developed CVD, including 262 strokes and 197 myocardial infarctions. Compared with the lowest quintile (Q1), the adjusted hazard ratios and 95% confidence interval (CI) of CVD in Q2 to Q5 of dietary Zn intake were 0.72 (0.54, 0.97), 0.59 (0.42, 0.81), 0.50 (0.34, 0.72) and 0.44 (0.27, 0.71), respectively. The influence trend of dietary Zn intake on new-onset CVD was nonlinear and L-shaped. When dietary Zn intake <13.66 mg/day, increased dietary Zn intake was significantly associated with decreased risk of developing CVD (HR = 0.87, 95% CI: 0.82-0.92, p-value <0.0001). Conclusion An L-shaped trend was observed between dietary Zn intake and the risk of developing CVD, indicating that dietary Zn intake should be improved moderately, but not excessively, for the benefit of cardiovascular disease.
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Affiliation(s)
- Huanxiang Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
- The first Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Shanjie Wang
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xia Gu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongbin Qiu
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
- The first Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Yiying Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Jiamusi University, Jiamusi, China
- The first Affiliated Hospital of Jiamusi University, Jiamusi, China
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Ume AC, Wenegieme TY, Adams DN, Adesina SE, Williams CR. Zinc Deficiency: A Potential Hidden Driver of the Detrimental Cycle of Chronic Kidney Disease and Hypertension. KIDNEY360 2023; 4:398-404. [PMID: 36996303 PMCID: PMC10103339 DOI: 10.34067/kid.0007812021] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 12/18/2022] [Indexed: 12/23/2022]
Abstract
Globally, over 103 million individuals are afflicted by CKD, a silent killer claiming the lives of 1.2 million people annually. CKD is characterized by five progressive stages, in which dialysis and kidney transplant are life-saving routes for patients with end stage kidney failure. While kidney damage impairs kidney function and derails BP regulation, uncontrolled hypertension accelerates the development and progression of CKD. Zinc (Zn) deficiency has emerged as a potential hidden driver within this detrimental cycle of CKD and hypertension. This review article will (1) highlight mechanisms of Zn procurement and trafficking, (2) provide evidence that urinary Zn wasting can fuel Zn deficiency in CKD, (3) discuss how Zn deficiency can accelerate the progression of hypertension and kidney damage in CKD, and (4) consider Zn supplementation as an exit strategy with the potential to rectify the course of hypertension and CKD progression.
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Affiliation(s)
- Adaku C. Ume
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine, College of Science and Mathematics, Wright State University, Dayton, Ohio
| | - Tara-Yesomi Wenegieme
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine, College of Science and Mathematics, Wright State University, Dayton, Ohio
| | - Danielle N. Adams
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine, College of Science and Mathematics, Wright State University, Dayton, Ohio
| | - Sherry E. Adesina
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Clintoria R. Williams
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine, College of Science and Mathematics, Wright State University, Dayton, Ohio
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Shedenkova MO, Stelmashook EV, Golyshev SA, Genrikhs EE, Isaev NK. Extracellular Alkalosis Reduces the Neurotoxicity of Zinc Ions in Cultured Cerebellar Granule Neurons. Biol Trace Elem Res 2023; 201:856-864. [PMID: 35665882 DOI: 10.1007/s12011-022-03214-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/22/2022] [Indexed: 01/21/2023]
Abstract
Zn2+ is known to be important for the normal brain functions. Disruption of zinc homeostasis and zinc-induced neurotoxicity has been shown to play a role in the development of neurodegenerative diseases. In this work, we investigated the effect of extracellular alkalosis on the zinc ions neurotoxicity in the cultured rat cerebellar granule neurons. Zinc chloride (0.03-0.06 mM, 24 h) added to the culture medium of rat cerebellar granule neurons caused the dose-dependent death of these cells. According to ultrastructural morphological features, the process of cell death could be attributed to necrosis, since it was accompanied by swelling of intracellular organelles and disruption of cell membranes against the background of relatively intact nuclear membranes. Neuronal death was associated with an increase in the level of intracellular free zinc. The toxic effect of zinc ions was significantly decreased when ionotropic glutamate NMDA-receptors were blocked by MK-801 or when the extracellular pH was increased from 7.3 to 7.8, due to a decrease in the zinc overload of the cytoplasm of these cells. The presented results demonstrate that NMDA channels are one of the Zn ion entry pathways in the cultured cerebellar granule neurons. Extracellular alkalosis reduces the zinc overload of the cytoplasm and, consequently, promotes the survival of neurons. Probably, zinc's neurotoxicity is inextricably linked with changes in the intracellular concentration of protons.
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Affiliation(s)
- Margarita O Shedenkova
- M.V. Lomonosov Moscow State University, Leninskiye gory, 119234, Moscow, Russia
- Research Center of Neurology, Moscow, Russia
| | | | - Sergey A Golyshev
- M.V. Lomonosov Moscow State University, Leninskiye gory, 119234, Moscow, Russia
| | | | - Nickolay K Isaev
- M.V. Lomonosov Moscow State University, Leninskiye gory, 119234, Moscow, Russia.
- Research Center of Neurology, Moscow, Russia.
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8
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Zinc supplementation in patients with acute myocardial infarction. Heart Vessels 2023; 38:889-897. [PMID: 36695857 DOI: 10.1007/s00380-023-02239-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/18/2023] [Indexed: 01/26/2023]
Abstract
This single-centre prospective feasibility study (UMIN000030232) evaluated whether zinc supplementation was safe and effective for improving outcomes among patients with acute myocardial infarction (AMI). Within 24 h after successful primary percutaneous coronary intervention, consenting patients with AMI were randomly assigned 1:1 to receive conventional treatment (conventional treatment group) or conventional treatment plus zinc acetate supplementation (zinc supplementation group). The two groups were compared in terms of major adverse cardiovascular events (MACE), and scar size, which was evaluated using cardiac magnetic resonance imaging (CMR) at 4 weeks after discharge. A total of 56 patients underwent randomization (with 26 assigned to the zinc supplementation group and 27 to the conventional treatment group). The two groups had generally similar laboratory findings and clinical characteristics. The two groups also had similar lengths of hospital stay and rates of MACE. Forty of the 53 patients underwent CMR and it revealed that % core zone was numerically lower in the zinc supplementation group than in the conventional treatment group (9.3 ± 6.9% vs. 14.2 ± 9.1%, P = 0.07). This small single-centre study failed to detect a significant reduction in mid-term MACE after AMI among patients who received zinc supplementation.
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Renteria M, Belkin O, Aickareth J, Jang D, Hawwar M, Zhang J. Zinc's Association with the CmPn/CmP Signaling Network in Breast Cancer Tumorigenesis. Biomolecules 2022; 12:1672. [PMID: 36421686 PMCID: PMC9687477 DOI: 10.3390/biom12111672] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 08/24/2023] Open
Abstract
It is well-known that serum and cellular concentrations of zinc are altered in breast cancer patients. Specifically, there are notable zinc hyper-aggregates in breast tumor cells when compared to normal mammary epithelial cells. However, the mechanisms responsible for zinc accumulation and the consequences of zinc dysregulation are poorly understood. In this review, we detailed cellular zinc regulation/dysregulation under the influence of varying levels of sex steroids and breast cancer tumorigenesis to try to better understand the intricate relationship between these factors based on our current understanding of the CmPn/CmP signaling network. We also made some efforts to propose a relationship between zinc signaling and the CmPn/CmP signaling network.
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Affiliation(s)
| | | | | | | | | | - Jun Zhang
- Department of Molecular and Translational Medicine (MTM), Texas Tech University Health Science Center El Paso, El Paso, TX 79905, USA
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Haddadian-Khouzani S, Shahidi S, Askari G, Clark CC, Rouhani MH. The efficacy and safety of zinc gluconate supplementation on quality of life, sleep quality, and serum albumin in hemodialysis patients: A randomized clinical trial. Eur J Integr Med 2022. [DOI: 10.1016/j.eujim.2022.102183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Abstract
Zinc is an essential trace element due to its role as a key part of human enzymatic activity. As a cofactor in metalloenzymes and metalloproteins, zinc participates in diverse biological functions, including gene transcription, translation, and replication, phagocytosis, and immunoglobulin and cytokine production. In this review, we will focus on the role of zinc in the cardiovascular system, including heart failure, vascular calcification, and myocardial infarction. We will further highlight the role of zinc in cardiovascular pathology in individuals with chronic kidney disease, and type II diabetes mellitus, groups uniquely at risk for cardiovascular morbidity and mortality.
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Xiong Y, Li J, He S. Zinc Protects against Heat Stress-Induced Apoptosis via the Inhibition of Endoplasmic Reticulum Stress in TM3 Leydig Cells. Biol Trace Elem Res 2022; 200:728-739. [PMID: 33738683 DOI: 10.1007/s12011-021-02673-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/10/2021] [Indexed: 01/19/2023]
Abstract
Heat stress (HS)-induced apoptosis in Leydig cells is mediated by various molecular mechanisms, including endoplasmic reticulum (ER) stress. Zinc, an inorganic mineral element, exhibits several cytoprotective properties, but its potential protective action against Leydig cell apoptosis and the related molecular mechanisms has not been fully elucidated. In this study, we evaluated the effects of zinc sulfate, a predominant chemical form of zinc, exerted on cell viability, apoptosis, and testosterone production in HS-treated TM3 Leydig cells and investigated the underlying signaling pathways. HS treatment inhibited cell viability and induced apoptosis, which was accompanied by the induction of the activity of caspase 3, an executioner of apoptosis, involved in the expression of pro-apoptotic protein B cell lymphoma 2-associated X protein (Bax), and in the reduction of the expression of anti-apoptotic protein B cell lymphoma 2 (Bcl-2), thereby activating ER stress marker protein expression (glucose-regulated protein 78 (GRP78) and CCAAT/enhancer-binding protein homologous protein (CHOP)). However, zinc sulfate led to the attenuation of deleterious effects, including increases in apoptosis, caspase-3 activity, Bax, GRP78, and CHOP expression, and decreases in cell viability and Bcl-2 protein expression in cells treated with HS or thapsigargin (an ER stress activator). Furthermore, 4-phenylbutyric acid (an ER stress inhibitor) treatment markedly alleviated the HS-induced adverse effects in cells exposed to HS, which was similar to zinc sulfate. Additionally, zinc sulfate supplementation in the culture medium effectively restored the HS-induced decrease in testosterone levels in HS-treated cells. In summary, these findings indicate that HS triggers apoptosis in TM3 Leydig cells via the ER stress pathway and that zinc confers protection against these detrimental effects. This study provides new insights into the benefits of using zinc against HS-induced apoptosis and cell injury.
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Affiliation(s)
- Yongjie Xiong
- College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
- Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Jing Li
- College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
- Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Shaojun He
- College of Animal Science, Anhui Science and Technology University, Fengyang, 233100, Anhui, China.
- Anhui Province Key Laboratory of Animal Nutritional Regulation and Health, Anhui Science and Technology University, Fengyang, 233100, Anhui, China.
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Tamura Y. The Role of Zinc Homeostasis in the Prevention of Diabetes Mellitus and Cardiovascular Diseases. J Atheroscler Thromb 2021; 28:1109-1122. [PMID: 34148917 PMCID: PMC8592709 DOI: 10.5551/jat.rv17057] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 05/25/2021] [Indexed: 11/30/2022] Open
Abstract
Zinc is an essential micronutrient for human health and is involved in various biological functions, such as growth, metabolism, and immune function. In recent years, research on intracellular zinc dynamics has progressed, and it has become clear that zinc transporters strictly control intracellular zinc localization, zinc regulates the functions of various proteins and signal transduction pathways as a second messenger similar to calcium ions, and intracellular zinc dyshomeostasis is associated with impaired insulin synthesis, secretion, sensitivity, lipid metabolism, and vascular function. Numerous animal and human studies have shown that zinc deficiency may be associated with the risk factors for diabetes and cardiovascular diseases (CVDs) and zinc administration might be beneficial for the prevention and treatment of these diseases. Therefore, an understanding of zinc biology may help the establishment of novel strategies for the prevention and treatment of diabetes and CVDs. This review will summarize the current knowledge on the role of zinc homeostasis in the pathogenesis of diabetes and atherosclerosis and will discuss the potential of zinc in the prevention of these diseases.
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Affiliation(s)
- Yukinori Tamura
- Division of Physiology and Biochemistry, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
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14
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Takic M, Zekovic M, Terzic B, Stojsavljevic A, Mijuskovic M, Radjen S, Ristic-Medic D. Zinc Deficiency, Plasma Fatty Acid Profile and Desaturase Activities in Hemodialysis Patients: Is Supplementation Necessary? Front Nutr 2021; 8:700450. [PMID: 34631763 PMCID: PMC8496936 DOI: 10.3389/fnut.2021.700450] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/27/2021] [Indexed: 02/05/2023] Open
Abstract
Background: Desaturation and elongation are critical processes in endogenous metabolic fatty acid pathways. Zinc (Zn) is a cofactor for desaturases and elongases enzymes. There is limited evidence regarding the relationships between biomarkers of Zn status, nutritional intake, plasma phospholipid fatty acid profile and clinical outcomes among patients undergoing hemodialysis (HD). Objective: To examine the relationships between dietary and serum levels of Zn and Cu/Zn ratio and to explore associations of these micronutrients with PUFA profile and estimated desaturase and elongase enzyme activities in serum phospholipids among HD patients. Methods: This study included 40 adult patients undergoing hemodialysis treatment. Repeated 24-h recalls were applied for dietary intake assessment. Serum concentration of Zn and Cu were determined using inductively coupled plasma mass spectrometry and fatty acid composition by gas-liquid chromatography. Desaturase and elongase activities were calculated from product-precursor fatty acid ratios. Results: Inadequate dietary Zn intake was found in 55% of HD patients. They all had serum Zn concentration below the reference value of 60 μg/dL (mean 38.8 ± 7.72 μg/dL). Adequate zinc intake was accompanied with significantly higher intake of energy, total fats, SFA, MUFA and proteins. There was no correlation between Zn serum status and Zn intake estimates. Serum Cu/Zn ratio was high, (2.76 ± 0.68), directly and significantly associated with HD period, CRP, BMI, VFA, and inversely with Kt/V, albumin, iron, and iPTH. The n-6/n-3 ratio in plasma phospholipids was elevated (12.25 ± 3.45) and patients with inadequate Zn intake had lower n-3 PUFA intake and status compared to those with adequate intake. Serum Zn concentrations were inversely correlated with linoleic/dihomo-γ-linolenic acid ratio (LA/DGLA) (p = 0.037), related to D6-desaturase activity (p = 0.033) and directly with DGLA relative abundances (p = 0.024). Cu status was inversely associated with EPA level (p = 0.03) and estimates of elongase activity (p = 0.001). Furthermore, positive relationship was found between the Cu/Zn ratio and determined elongase value (p = 0.01). Conclusion: Findings of this study underpin the high prevalence of Zn deficiency and inadequate n-3 PUFA intake and status among subjects undergoing HD. The results obtained indicate that the assessment of Zn status should be a standard parameter of nutritional status screening in HD patients while emphasizing the importance of Cu/Zn determination. Although further research is warranted, Zn and-n-3 PUFA supplementation in HD patients might be beneficial for the prevention and attenuation of adverse health outcomes.
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Affiliation(s)
- Marija Takic
- Centre of Research Excellence in Nutrition and Metabolism, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Milica Zekovic
- Centre of Research Excellence in Nutrition and Metabolism, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - Brankica Terzic
- Clinic of Nephrology, Military Medical Academy, Belgrade, Serbia.,Medical Faculty of the Military Medical Academy, University of Defence in Belgrade, Belgrade, Serbia
| | - Aleksandar Stojsavljevic
- Innovation Center of the Faculty of Chemistry, Department of Analytical Chemistry, University of Belgrade, Belgrade, Serbia
| | - Mirjana Mijuskovic
- Clinic of Nephrology, Military Medical Academy, Belgrade, Serbia.,Medical Faculty of the Military Medical Academy, University of Defence in Belgrade, Belgrade, Serbia
| | - Slavica Radjen
- Medical Faculty of the Military Medical Academy, University of Defence in Belgrade, Belgrade, Serbia.,Institute of Hygiene, Military Medical Academy, Belgrade, Serbia
| | - Danijela Ristic-Medic
- Centre of Research Excellence in Nutrition and Metabolism, Institute for Medical Research, University of Belgrade, Belgrade, Serbia.,Department of Nutrition Biochemistry and Dietology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
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15
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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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16
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Wu J, Sun X, Jiang Z, Jiang J, Xu L, Tian A, Sun X, Meng H, Li Y, Huang W, Jia Y, Wu H. Protective role of NRF2 in macrovascular complications of diabetes. J Cell Mol Med 2020; 24:8903-8917. [PMID: 32628815 PMCID: PMC7417734 DOI: 10.1111/jcmm.15583] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/05/2020] [Accepted: 05/07/2020] [Indexed: 02/07/2023] Open
Abstract
Macrovascular complications develop in over a half of the diabetic individuals, resulting in high morbidity and mortality. This poses a severe threat to public health and a heavy burden to social economy. It is therefore important to develop effective approaches to prevent or slow down the pathogenesis and progression of macrovascular complications of diabetes (MCD). Oxidative stress is a major contributor to MCD. Nuclear factor (erythroid‐derived 2)‐like 2 (NRF2) governs cellular antioxidant defence system by activating the transcription of various antioxidant genes, combating diabetes‐induced oxidative stress. Accumulating experimental evidence has demonstrated that NRF2 activation protects against MCD. Structural inhibition of Kelch‐like ECH‐associated protein 1 (KEAP1) is a canonical way to activate NRF2. More recently, novel approaches, such as activation of the Nfe2l2 gene transcription, decreasing KEAP1 protein level by microRNA‐induced degradation of Keap1 mRNA, prevention of proteasomal degradation of NRF2 protein and modulation of other upstream regulators of NRF2, have emerged in prevention of MCD. This review provides a brief introduction of the pathophysiology of MCD and the role of oxidative stress in the pathogenesis of MCD. By reviewing previous work on the activation of NRF2 in MCD, we summarize strategies to activate NRF2, providing clues for future intervention of MCD. Controversies over NRF2 activation and future perspectives are also provided in this review.
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Affiliation(s)
- Junduo Wu
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Xiaodan Sun
- Intensive Care Unit, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ziping Jiang
- Department of Hand and Foot Surgery, The First Hospital of Jilin University, Changchun, China
| | - Jun Jiang
- Department of Neurosurgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Linlin Xu
- Department of Neurology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ao Tian
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xuechun Sun
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Huali Meng
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ying Li
- Department of Dermatology, Affiliated Hospital of Beihua University, Jilin, China
| | - Wenlin Huang
- School of Science and Technology, Georgia Gwinnett College, Lawrenceville, GA, USA
| | - Ye Jia
- Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Hao Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, China
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Synthesis, characterization and anticancer activity in vitro evaluation of novel dicyanoaurate (I)-based complexes. Life Sci 2020; 251:117635. [PMID: 32272179 DOI: 10.1016/j.lfs.2020.117635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 11/23/2022]
Abstract
Molecular structures containing gold, such as auranofin, have been extensively studied in the diagnosis and treatment of many diseases, including cancer treatment. The pharmacological properties of the newly synthesized unique gold-ligand structures have been reported for different cancer cell lines. However, findings on bishydeten-metal salt complexes with gold are rare. In this work, the synthesis of five novel cyanide-bridged coordination compounds having the closed formulae [Ni(bishydeten)][Au(CN)2]2 (1), [Cu(bishydeten)][Au(CN)2]2 (2), [Zn(bishydeten)2Au3(CN)4][Au2(CN)3] (3), [Cd(bishydeten)0,5]2[Au(CN)2]4.2H2O (4), and [Cd(bishydeten)2][Au(CN)2]2 (5) (where bisyhdeten = N,N-bis(2-hydroxyethyl)ethylene diamine), and their characterization by elemental, infrared, ESI-MS, X-ray (for 2) and thermic measurement methods were performed. Complexes 1 and 3 are thermally more stable than the other three complexes. For these, pharmacological adequacies were also tested. The nucleic acid and protein binding affinities of the Au (I) compounds were also estimated by spectroscopic and electrophoretic techniques. Au (I) complexes were identified as strong chemotherapeutic with mild cytotoxicity, and they demonstrated a dose-dependent inhibition on the growth of cancer cells with IC50 at 0.11 to 0.47 μM. Investigation of mechanisms of action on cells revealed that Au (I) compounds managed to inhibit cell migration and led to a decrease in cytoskeletal proteins such as CK7 and CK20. However, Au (I) compounds failed to inhibit DNA topoisomerase I. Overall, and we suggest that potent antiproliferative activity, mild cytotoxicity, good solubility, and micromolar dosage of Au (I) compounds containing bisyhdeten-metal derivatives render them the potential focus of further studies as chemotherapeutic agents.
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18
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Özsobacı NP, Ergün DD, Tunçdemir M, Özçelik D. Protective Effects of Zinc on 2.45 GHz Electromagnetic Radiation-Induced Oxidative Stress and Apoptosis in HEK293 Cells. Biol Trace Elem Res 2020; 194:368-378. [PMID: 31317470 DOI: 10.1007/s12011-019-01811-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/01/2019] [Indexed: 12/19/2022]
Abstract
Several epidemiological studies have shown that exposure to electromagnetic radiation (EMR) can be harmful to human health. The purpose of this study was to examine oxidative parameters and apoptosis induced by EMR in human kidney embryonic cells (HEK293) and to investigate whether zinc (Zn) has protective effect on EMR-induced apoptosis in HEK293 cells. For our experiment, HEK293 cells were divided into four main groups, control, EMR, 50 μM Zn + EMR, and 100 μM Zn + EMR. HEK293 cells of EMR groups were exposed to 2.45 GHz EMR for 1 h. In Zn groups, HEK293 cells were incubated with different concentrations of Zn for 48 h before EMR exposure. Oxidative stress parameters were determined by spectrophotometric method; bcl-2 and caspase-3 were assessed immunohistochemically and TUNEL method was performed for apoptotic activity. EMR group had higher malondialdehyde (MDA) level and lower superoxide dismutase (SOD) activity compared with control group. In Zn-applied groups, MDA was decreased and SOD activity was increased compared with EMR group. The number of the apoptotic cells and caspase-3 immunopositive cells at EMR group was increased significantly compared with the control group, whereas bcl-2 was decreased. Besides, Zn-treated groups showed a significant reduction in the number of apoptotic cells and caspase-3 from that of EMR group, whereas there was an increase in bcl-2 immunopositivity. Our findings show that EMR caused oxidative stress and apoptotic activation in HEK293 cells. Zn seems to have protective effects on the EMR by increasing SOD activity and bcl-2 immunopositivity, decreasing lipid peroxidation and caspas-3 immunopositivity.
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Affiliation(s)
- Nural Pastacı Özsobacı
- Biophysics Department, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey.
| | - Dilek Düzgün Ergün
- Biophysics Department, Faculty of Medicine, Istanbul Aydın University, Istanbul, Turkey
| | - Matem Tunçdemir
- Medical Biology Department, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Derviş Özçelik
- Biophysics Department, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
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19
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Dietary zinc supplement militates against ketamine-induced behaviours by age-dependent modulation of oxidative stress and acetylcholinesterase activity in mice. Pharmacol Rep 2020; 72:55-66. [PMID: 32016846 DOI: 10.1007/s43440-019-00003-2] [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: 12/26/2018] [Revised: 08/16/2019] [Accepted: 09/26/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND The potential differential modulatory effects of zinc-supplemented diet on ketamine-induced changes in behaviours, brain oxidative stress, acetylcholinesterase activity, and zinc (ZN) levels were examined in prepubertal and aged mice. METHODS Aged and prepubertal mice were divided into 2 groups consisting of 80 aged and 80 prepubertal mice, each having 8 treatment groups of 10 animals each. The treatment groups are: vehicle control group (fed standard diet and given intraperitoneal {ip} normal saline), three groups fed ZN-supplemented diet (at 25, 50 and 100 mg/kg of feed) and given ip normal saline, ketamine control group (fed standard diet and given ip ketamine), and finally another three groups fed ZN-supplemented diet (at 25, 50 and 100 mg/kg of feed) and given ip ketamine. Intraperitoneal normal saline (at 2 ml/kg/day) or ketamine (at 30 mg/kg/day) were administered during the last 10 days of study. On day 60, animals were exposed to the open-field, Y-maze, radial-arm maze, and elevated plus maze following which they were euthanised; blood and brain homogenate were used for assessment of biochemical parameters. RESULTS Zinc supplementation was associated with an increase in food intake and body weight (in both age groups), a reduction in ketamine-induced increase in locomotion, rearing and grooming, and significantly higher working-memory scores (compared to ketamine control). Also, there was a decrease in anxiety-related behaviours, enhanced antioxidant status, reduced lipid peroxidation, and reduced acetylcholinesterase activity. CONCLUSION In conclusion, dietary ZN supplementation was associated with variable degrees of prevention of ketamine-induced changes, depending on the age of animals.
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20
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Al-Sandaqchi AT, Brignell C, Collingwood JF, Geraki K, Mirkes EM, Kong K, Castellanos M, May ST, Stevenson CW, Elsheikha HM. Metallome of cerebrovascular endothelial cells infected with Toxoplasma gondii using μ-XRF imaging and inductively coupled plasma mass spectrometry. Metallomics 2019; 10:1401-1414. [PMID: 30183049 DOI: 10.1039/c8mt00136g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we measured the levels of elements in human brain microvascular endothelial cells (ECs) infected with T. gondii. ECs were infected with tachyzoites of the RH strain, and at 6, 24, and 48 hours post infection (hpi), the intracellular concentrations of elements were determined using a synchrotron-microfocus X-ray fluorescence microscopy (μ-XRF) system. This method enabled the quantification of the concentrations of Zn and Ca in infected and uninfected (control) ECs at sub-micron spatial resolution. T. gondii-hosting ECs contained less Zn than uninfected cells only at 48 hpi (p < 0.01). The level of Ca was not significantly different between infected and control cells (p > 0.05). Inductively Coupled Plasma Mass Spectrometry (ICP-MS) analysis revealed infection-specific metallome profiles characterized by significant increases in the intracellular levels of Zn, Fe, Mn and Cu at 48 hpi (p < 0.01), and significant reductions in the extracellular concentrations of Co, Cu, Mo, V, and Ag at 24 hpi (p < 0.05) compared with control cells. Zn constituted the largest part (74%) of the total metal composition (metallome) of the parasite. Gene expression analysis showed infection-specific upregulation in the expression of five genes, MT1JP, MT1M, MT1E, MT1F, and MT1X, belonging to the metallothionein gene family. These results point to a possible correlation between T. gondii infection and increased expression of MT1 isoforms and altered intracellular levels of elements, especially Zn and Fe. Taken together, a combined μ-XRF and ICP-MS approach is promising for studies of the role of elements in mediating host-parasite interaction.
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Affiliation(s)
- Alaa T Al-Sandaqchi
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Chris Brignell
- School of Mathematical Sciences, University of Nottingham, Nottingham, NG7 2RD, UK
| | | | - Kalotina Geraki
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Evgeny M Mirkes
- Mathematics Department, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Kenny Kong
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Marcos Castellanos
- Nottingham Arabidopsis Stock Centre, School of Biosciences, University of Nottingham, Loughborough LE12 5RD, UK
| | - Sean T May
- Nottingham Arabidopsis Stock Centre, School of Biosciences, University of Nottingham, Loughborough LE12 5RD, UK
| | - Carl W Stevenson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Hany M Elsheikha
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK.
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21
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Long T, Wang R, Wang J, Wang F, Xu Y, Wei Y, Zhou L, Zhang X, Yuan J, Yao P, Wei S, Guo H, Yang H, Wu T, He M. Plasma metals and cardiovascular disease in patients with type 2 diabetes. ENVIRONMENT INTERNATIONAL 2019; 129:497-506. [PMID: 31158596 DOI: 10.1016/j.envint.2019.05.038] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Metals exposure from natural environment and pollution have been linked to cardiovascular disease (CVD). However, whether associations existing between plasma multiple metals and incident cardiovascular disease in patients with type 2 diabetes (T2D) is unknown. OBJECTIVES We conducted a prospective cohort study to investigate whether plasma levels of metals are associated with incident CVD risk in patients with T2D. METHODS In a prospective study of 3897 type 2 diabetes embedded in the Dongfeng-Tongji cohort, fasting blood samples were collected in 2008 at baseline and in 2013 in the first follow-up period. Plasma concentrations of 23 metals were measured by inductively coupled plasma mass spectrometry (ICP-MS). The associations between plasma metal concentrations and CVD risk in patients with T2D were investigated with Cox proportional hazards models. RESULTS During an average of 6.2 years follow-up, 1114 participants developed CVD. In the single-metal models adjusting for established cardiovascular risk factors, plasma zinc and selenium levels were negatively and strontium was positively associated with incident CVD risk in patients with T2D. Similar results were obtained in the multiple-metal model, the HRs (95% CIs) for zinc, selenium, and strontium comparing extreme quartiles were 0.78 (95% CI: 0.65-0.93; P trend = 0.011), 0.76 (95% CI: 0.64-0.91; P trend = 0.001), and 1.51 (95% CI: 1.26-1.81; P trend <0.001), respectively. In the joint association analyses of two metals, individuals with high plasma levels of zinc and selenium had significantly lower risk of incident CVD in patients with T2D than those with low levels (HR = 0.77, 95% CI: 0.65-0.91). CONCLUSIONS The present study suggested that plasma levels of zinc and selenium had an inverse association with incident CVD risk in patients with T2D, while strontium had a positive correlation. Plasma zinc and selenium combinedly decreased incident CVD risk in patients with T2D. Further research is still needed to verify these findings in other populations.
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Affiliation(s)
- Tengfei Long
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ruixin Wang
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jing Wang
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Department of Preventive Medicine in School of Public Health and Management and Center for Environment and Health in Water Source Area of South to North Water Diversion, Hubei University of Medicine, Shiyan, Hubei, China
| | - Fei Wang
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yali Xu
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yue Wei
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lue Zhou
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaomin Zhang
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jing Yuan
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ping Yao
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Sheng Wei
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Huan Guo
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Handong Yang
- Department of Cardiovascular Medicine, Dongfeng Central Hospital, Dongfeng Motor Corporation and Hubei University of Medicine, Shiyan, Hubei, China
| | - Tangchun Wu
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Meian He
- Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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Beigi Harchegani A, Dahan H, Tahmasbpour E, Bakhtiari Kaboutaraki H, Shahriary A. Effects of zinc deficiency on impaired spermatogenesis and male infertility: the role of oxidative stress, inflammation and apoptosis. HUM FERTIL 2018; 23:5-16. [PMID: 30129823 DOI: 10.1080/14647273.2018.1494390] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Zinc (Zn) is necessary for the normal function of the male reproductive system and spermatozoa. Although influences of zinc deficiency on impaired spermatogenesis and male infertility have been widely considered, the molecular and cellular mechanisms of these abnormalities are not well understood. General abnormalities, including hypogonadism, Leydig cells damage, deficiency of sex hormone production and impaired spermatogenesis, as well as inflammation, antioxidant depletion, sperm death and male infertility can be observed during zinc deficiency. However, it is not obvious which pathways are relevant to the pathogenesis of zinc deficiency. Oxidative stress (OS) induced by reactive oxygen species is likely as the main mechanism of zinc deficiency which is associated with sperm DNA fragmentation, decrease in sperm membrane integrity, apoptosis, depletion of antioxidants, and consequently poor sperm quality and male infertility. Therefore, identification of these pathways will give valuable information regarding the mechanisms of zinc deficiency on the male reproductive system and the potential way for developing a better clinical approach. In this review, we aim to discuss the proposed cellular and molecular mechanisms of zinc deficiency on the male reproductive system, the importance of OS and mechanisms by which zinc deficiency induces OS and depletion of other antioxidants.
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Affiliation(s)
- Asghar Beigi Harchegani
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Heydar Dahan
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Eisa Tahmasbpour
- Laboratory of Regenerative Medicine & Biomedical Innovations, Pasteur Institute of Iran, Tehran, Iran
| | - Hamid Bakhtiari Kaboutaraki
- Department of Pharmaceutics, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Shahriary
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Importance of extracellular matrix and growth state for the EA.hy926 endothelial cell response to polyunsaturated fatty acids. PLoS One 2018; 13:e0197613. [PMID: 29763471 PMCID: PMC5953484 DOI: 10.1371/journal.pone.0197613] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 05/04/2018] [Indexed: 12/31/2022] Open
Abstract
Consumption of different PUFAs (polyunsaturated fatty acids) can induce functional changes in blood vessels via endothelial cells, which interact with dietary factors in the circulation. The basement membrane that separates the endothelium from the smooth muscle cells of the medial layer can also influence the functional state of endothelial cells. However, the effect of basement membrane on the endothelial response to dietary PUFAs in relation to growth state (e.g. proliferation versus quiescence) has never been investigated. We therefore compared the viability (CCK kit) and proliferation (bromodeoxyuridine incorporation) of EA.hy926 endothelial cells grown on Matrigel or collagen versus non-coated plates. EA.hy926 viability and proliferation were also assessed after treatment with 0–150 μM of PUFAs [linoleic acid (LA), arachidonic acid (AA), α-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)]. Our study showed that only cells grown on Matrigel-coated plates reached quiescence after becoming confluent with a decreased level of MCM2 and p-cyclin D1 (T286), increased levels of p27kip1 and a low level of apoptosis and senescence. AA, EPA and DHA decreased the viability and proliferation of subconfluent cells grown on plastic dishes in a dose-dependent manner, while the presence of Matrigel made the cells resistant to these adverse effects. Confluent cell viability was less sensitive to higher concentrations of AA, EPA and DHA than subconfluent cells, and a significant increase in caspase-3 cleavage was only observed in confluent cells treated with DHA. Higher concentrations of AA, EPA and DHA suppressed DNA synthesis by both subconfluent and confluent cells, while precursor C18 PUFAs (LA and ALA) had no negative effects on viability and proliferation. Our study is the first to show that extracellular matrix and growth state are important factors in the EA.hy926 cell response to PUFAs, and that the mechanisms by which individual PUFAs operate may be growth state-dependent.
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Sudheesh KV, Joseph MM, Philips DS, Samanta A, Kumar Maiti K, Ajayaghosh A. pH-Controlled Nanoparticles Formation and Tracking of Lysosomal Zinc Ions in Cancer Cells by Fluorescent Carbazole-Bipyridine Conjugates. ChemistrySelect 2018. [DOI: 10.1002/slct.201703131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Karivachery V. Sudheesh
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Manu M. Joseph
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Divya S. Philips
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Animesh Samanta
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Kaustabh Kumar Maiti
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Ayappanpillai Ajayaghosh
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
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Liu Y, Zhu H, Hong H, Wang W, Liu F. Can zinc protect cells from the cytotoxic effects of cobalt ions and nanoparticles derived from metal-on-metal joint arthroplasties? Bone Joint Res 2017; 6:649-655. [PMID: 29203637 PMCID: PMC5935811 DOI: 10.1302/2046-3758.612.bjr-2016-0137.r2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/25/2017] [Indexed: 12/25/2022] Open
Abstract
Objectives Recently, high failure rates of metal-on-metal (MOM) hip implants have raised concerns of cobalt toxicity. Adverse reactions occur to cobalt nanoparticles (CoNPs) and cobalt ions (Co2+) during wear of MOM hip implants, but the toxic mechanism is not clear. Methods To evaluate the protective effect of zinc ions (Zn2+), Balb/3T3 mouse fibroblast cells were pretreated with 50 μM Zn2+ for four hours. The cells were then exposed to different concentrations of CoNPs and Co2+ for four hours, 24 hours and 48 hours. The cell viabilities, reactive oxygen species (ROS) levels, and inflammatory cytokines were measured. Results CoNPs and Co2+ can induce the increase of ROS and inflammatory cytokines, such as tumour necrosis factor α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6). However, Zn pretreatment can significantly prevent cytotoxicity induced by CoNPs and Co2+, decrease ROS production, and decrease levels of inflammatory cytokines in Balb/3T3 mouse fibroblast cells. Conclusion These results suggest that Zn pretreatment can provide protection against inflammation and cytotoxicity induced by CoNPs and Co2+ in Balb/3T3 cells. Cite this article: Y. Liu, H. Zhu, H. Hong, W. Wang, F. Liu. Can zinc protect cells from the cytotoxic effects of cobalt ions and nanoparticles derived from metal-on-metal joint arthroplasties? Bone Joint Res 2017;6:649–655. DOI: 10.1302/2046-3758.612.BJR-2016-0137.R2.
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Affiliation(s)
- Y Liu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu Province 226001, China
| | - H Zhu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu Province 226001, China
| | - H Hong
- Department of Orthopaedics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu Province 226001, China
| | - W Wang
- Department of Orthopaedics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu Province 226001, China
| | - F Liu
- Department of Orthopaedics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, Jiangsu Province 226001, China
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Giacconi R, Cai L, Costarelli L, Cardelli M, Malavolta M, Piacenza F, Provinciali M. Implications of impaired zinc homeostasis in diabetic cardiomyopathy and nephropathy. Biofactors 2017; 43:770-784. [PMID: 28845600 DOI: 10.1002/biof.1386] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/12/2017] [Accepted: 07/27/2017] [Indexed: 12/18/2022]
Abstract
Impaired zinc homeostasis is observed in diabetes mellitus (DM2) and its complications. Zinc has a specific role in pancreatic β-cells via insulin synthesis, storage, and secretion. Intracellular zinc homeostasis is tightly controlled by zinc transporters (ZnT and Zip families) and metallothioneins (MT) which modulate the uptake, storage, and distribution of zinc. Several investigations in animal models demonstrate the protective role of MT in DM2 and its cardiovascular or renal complications, while a copious literature shows that a common polymorphism (R325W) in ZnT8, which affects the protein's zinc transport activity, is associated with increased DM2 risk. Emerging studies highlight a role of other zinc transporters in β-cell function, suggesting that targeting them could make a possible contribution in managing the hyperglycemia in diabetic patients. This article summarizes the current findings concerning the role of zinc homeostasis in DM2 pathogenesis and development of diabetic cardiomyopathy and nephropathy and suggests novel therapeutic targets. © 2017 BioFactors, 43(6):770-784, 2017.
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Affiliation(s)
- Robertina Giacconi
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Lu Cai
- Pediatric Research Institute at the Department of Pediatrics, Wendy L. Novak Diabetes Care Center, University of Louisville, Louisville, KY, USA
| | - Laura Costarelli
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Maurizio Cardelli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Marco Malavolta
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Francesco Piacenza
- Translational Research Center of Nutrition and Ageing, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
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Heng S, Reineck P, Vidanapathirana AK, Pullen BJ, Drumm DW, Ritter LJ, Schwarz N, Bonder CS, Psaltis PJ, Thompson JG, Gibson BC, Nicholls SJ, Abell AD. Rationally Designed Probe for Reversible Sensing of Zinc and Application in Cells. ACS OMEGA 2017; 2:6201-6210. [PMID: 30023765 PMCID: PMC6044982 DOI: 10.1021/acsomega.7b00923] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 09/08/2017] [Indexed: 05/19/2023]
Abstract
Biologically compatible fluorescent ion sensors, particularly those that are reversible, represent a key tool for answering a range of fundamental biological questions. We report a rationally designed probe with a 6'-fluoro spiropyran scaffold (5) for the reversible sensing of zinc (Zn2+) in cells. The 6'-fluoro substituent overcomes several limitations normally associated with spiropyran-based sensors to provide an improved signal-to-background ratio and faster photoswitching times in aqueous solution. In vitro studies were performed with 5 and the 6'-nitro analogues (6) in HEK 293 and endothelial cells. The new spiropyran (5) can detect exogenous Zn2+ inside both cell types and without affecting the proliferation of endothelial cells. Studies were also performed on dying HEK 293 cells, with results demonstrating the ability of the key compound to detect endogenous Zn2+ efflux from cells undergoing apoptosis. Biocompatibility and photoswitching of 5 were demonstrated within endothelial cells but not with 6, suggesting the future applicability of sensor 5 to study intracellular Zn2+ efflux in these systems.
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Affiliation(s)
- Sabrina Heng
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
- E-mail:
| | - Philipp Reineck
- CNBP, School of Science, RMIT
University, Melbourne, Victoria 3001, Australia
| | - Achini K. Vidanapathirana
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Benjamin J. Pullen
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Daniel W. Drumm
- CNBP, School of Science, RMIT
University, Melbourne, Victoria 3001, Australia
| | - Lesley J. Ritter
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Nisha Schwarz
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Claudine S. Bonder
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Peter J. Psaltis
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Jeremy G. Thompson
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Brant C. Gibson
- CNBP, School of Science, RMIT
University, Melbourne, Victoria 3001, Australia
| | - Stephen J. Nicholls
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
| | - Andrew D. Abell
- ARC
Center of Excellence for Nanoscale BioPhotonics (CNBP), Institute
for Photonics and Advanced Sensing (IPAS), Department of Chemistry, CNBP, Heart Health
Theme, South Australian Health and Medical Research Institute and
Adelaide Medicine School, CNBP, IPAS, The Robinson Research Institute, School
of Medicine, and Centre for Cancer Biology, University of South Australia and SA Pathology
& Adelaide Medical School, The University
of Adelaide, Adelaide, South Australia 5000, Australia
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Onaolapo OJ, Ademakinwa OQ, Olalekan TO, Onaolapo AY. Ketamine-induced behavioural and brain oxidative changes in mice: an assessment of possible beneficial effects of zinc as mono- or adjunct therapy. Psychopharmacology (Berl) 2017; 234:2707-2725. [PMID: 28612134 DOI: 10.1007/s00213-017-4666-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 05/29/2017] [Indexed: 12/14/2022]
Abstract
RATIONALE We studied the influence of zinc, haloperidol or olanzapine on neurobehaviour (open-field, radial arm maze and elevated plus maze) and brain antioxidant status in vehicle- or ketamine-treated mice, with the aim of ascertaining the potentials of zinc in counteracting ketamine's effects. OBJECTIVES Experiment 1 assessed the effects of zinc in healthy animals and the relative degrees of modulation of ketamine's effects by zinc, haloperidol or olanzapine, respectively. Experiment 2 assessed the modulation of ketamine's effects following co-administration of zinc with haloperidol or olanzapine. METHODS Male mice weighing 18-20 g each were used. Animals were pretreated with ketamine (except vehicle, zinc, haloperidol and olanzapine controls) for 10 days before commencement of 14-day treatment (day 11-24) with vehicle, zinc, haloperidol or olanzapine (alone or in combination). Ketamine injection also continued alongside zinc and/or standard drugs in the ketamine-treated groups. Zinc, haloperidol and olanzapine were administered by gavage. Treatments were given daily and behaviours assessed on days 11 and 24. On day 24, animals were sacrificed and whole brain homogenates used for estimation of glutathione, nitric oxide and malondialdehyde (MDA) levels. RESULTS Ketamine increased open-field behaviours, nitric oxide and MDA levels, while it decreased working memory, social interaction and glutathione. Administration of zinc alone or in combination with haloperidol or olanzapine was associated with variable degrees of reversal of these effects. CONCLUSION Zinc may have the potential of a possible therapeutic agent and/or adjunct in the reversal of schizophrenia-like changes in behaviour and brain oxidative status.
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Affiliation(s)
- Olakunle James Onaolapo
- Department of Pharmacology, Ladoke Akintola University of Technology, Osogbo, Osun State, Nigeria.
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Abstract
In 2012 there were 135,943 infants of multiple pregnancies born in the United States, nearly a 2-fold increase since 1980, with twins accounting for 96% of all multiple births. To date, most perinatal morbidities associated with multiple births have proven resistant to technological or pharmaceutical interventions. Maternal nutrition can have a profound effect on the course and outcome of multiple pregnancy, with the goal of achieving optimal intrauterine growth and birthweights, and minimizing prenatal and perinatal complications for the mother and her children.
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Affiliation(s)
- Barbara Luke
- Michigan State University College of Human Medicine, East Lansing, Michigan
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30
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Martins IJ. The Role of Clinical Proteomics, Lipidomics, and Genomics in the Diagnosis of Alzheimer's Disease. Proteomes 2016; 4:proteomes4020014. [PMID: 28248224 PMCID: PMC5217345 DOI: 10.3390/proteomes4020014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/24/2016] [Accepted: 03/28/2016] [Indexed: 02/07/2023] Open
Abstract
The early diagnosis of Alzheimer’s disease (AD) has become important to the reversal and treatment of neurodegeneration, which may be relevant to premature brain aging that is associated with chronic disease progression. Clinical proteomics allows the detection of various proteins in fluids such as the urine, plasma, and cerebrospinal fluid for the diagnosis of AD. Interest in lipidomics has accelerated with plasma testing for various lipid biomarkers that may with clinical proteomics provide a more reproducible diagnosis for early brain aging that is connected to other chronic diseases. The combination of proteomics with lipidomics may decrease the biological variability between studies and provide reproducible results that detect a community’s susceptibility to AD. The diagnosis of chronic disease associated with AD that now involves genomics may provide increased sensitivity to avoid inadvertent errors related to plasma versus cerebrospinal fluid testing by proteomics and lipidomics that identify new disease biomarkers in body fluids, cells, and tissues. The diagnosis of AD by various plasma biomarkers with clinical proteomics may now require the involvement of lipidomics and genomics to provide interpretation of proteomic results from various laboratories around the world.
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Affiliation(s)
- Ian James Martins
- School of Medical Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup 6027, Australia.
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31
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Ranasinghe P, Wathurapatha WS, Ishara MH, Jayawardana R, Galappatthy P, Katulanda P, Constantine GR. Effects of Zinc supplementation on serum lipids: a systematic review and meta-analysis. Nutr Metab (Lond) 2015; 12:26. [PMID: 26244049 PMCID: PMC4523910 DOI: 10.1186/s12986-015-0023-4] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/24/2015] [Indexed: 12/11/2022] Open
Abstract
Zinc is a mineral that plays a vital role in many biological processes and plays an important role in insulin action and carbohydrate metabolism. It may also have a protective role in the prevention of atherogenesis. Numerous studies have evaluated the effects of Zinc supplementation on serum lipids in humans and have demonstrated varying results. We systematically evaluated the literature and performed a meta-analysis on the effects of Zinc supplementation on serum lipids. A five staged comprehensive search of the literature was conducted in the following databases; PubMed, Web of Science and SciVerse Scopus for studies published before 31st December 2014. All controlled clinical trial in humans, that included a Zinc supplement intervention, either alone or in combination with other micronutrients and evaluated effects on serum lipids (total cholesterol [TC], triglycerides [TG], LDL cholesterol [LDL-c] and HDL cholesterol [HDL-c]). A meta-analysis of selected studies was performed using RevMan v5.3. The Jaded scale was used to assess the methodological quality of the trials included in the systematic review. A total of 24 studies were included in Meta analysis, which included a total of 33 Zinc interventions, in a total of 14,515 participants in the Zinc intervention or control group. The duration of Zinc supplementation ranged from 1 month to 7.5 years. The dose of elemental Zinc supplemented ranged from 15–240 mg/day. The pooled mean difference for TC between Zinc supplemented and placebo groups from random effects analysis was −10.92 mg/dl (95 % CI: −15.33, −6.52; p < 0.0001, I2 = 83 %), while for HDL cholesterol it was 2.12 mg/dl (95 % CI: −0.74, 4.98; p = 0.15, I2 = 83 %). The pooled mean difference for LDL-c between Zinc supplemented and placebo group from random effect analysis was −6.87 mg/dl (95 % CI: −11.16,-2.58; p < 0.001, I2 = 31) and for TG it was −10.92 mg/dl (95 % CI: −18.56, − 3.28; p < 0.01, I2 = 69 %). In conclusion, Zinc supplementation has favourable effects on plasma lipid parameters. Zinc supplementation significantly reduced total cholesterol, LDL cholesterol and triglycerides. Therefore it may have the potential to reduce the incidence of atherosclerosis related morbidity and mortality.
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Affiliation(s)
- Priyanga Ranasinghe
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - W S Wathurapatha
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - M H Ishara
- Ministry of Health Care and Nutrition, Colombo, Sri Lanka
| | - R Jayawardana
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland Australia ; Diabetes Research Unit, Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - P Galappatthy
- Department of Pharmacology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - P Katulanda
- Diabetes Research Unit, Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - G R Constantine
- Diabetes Research Unit, Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
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Jeon Y, Yoon JD, Cai L, Hwang SU, Kim E, Zheng Z, Jeung E, Lee E, Hyun SH. Zinc deficiency during in vitro maturation of porcine oocytes causes meiotic block and developmental failure. Mol Med Rep 2015; 12:5973-82. [PMID: 26238161 DOI: 10.3892/mmr.2015.4125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 06/23/2015] [Indexed: 11/06/2022] Open
Abstract
The present study investigated the effects of zinc deficiency during in vitro maturation (IVM) of porcine oocytes. Zinc deficiency was induced by administering the membrane‑permeable zinc chelator N,N,N',N'‑tetrakis‑(2‑pyridylmethyl)‑ethylendiamine (TPEN). First, the effects of zinc deficiency during IVM on a TPEN‑treated group and a TPEN+zinc-treated group compared with a control group were assessed. The oocyte maturation rates and subsequent embryonic developmental competence of the TPEN+zinc‑treated oocytes were similar to those of the control oocytes (metaphase II [MII] rate, 93.0 and 92.7%, respectively, and blastocyst [BL] formation rate, 42.0 and 40.0%, respectively). These results were significantly different from those obtained for the TPEN‑treated oocytes (MII rate, 0.61%; BL formation rate, 0%). Although the TPEN‑treated oocytes were arrested at metaphase I (MI), the distribution of microtubules was normal. However, microfilament formation was abnormal in the TPEN‑treated oocytes. Furthermore, the effect of a temporary zinc deficiency during IVM on oocyte maturation and subsequent embryonic development was assessed. TPEN (10 µM) was added to the IVM medium for 0, 7, 15 or 22 h. The 0 h‑treated oocytes showed an 83.9% MII rate, while the 7 h‑treated oocytes had a significantly lower MII rate (44.8%). Most of the 15- and 22 h‑treated oocytes were arrested at MI (MI rate: 98.0 and 97.2%, respectively; MII rate, 0% in both groups). Reductions in the BL formation were dependent on the TPEN treatment duration (29.3, 9.2, 0, and 0% after 0, 7, 15 and 22 h, respectively). In conclusion, zinc is an essential element for successful oocyte maturation and embryonic development in pigs. Zinc deficiency caused a meiotic block and had lasting effects on early embryonic development.
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Affiliation(s)
- Yubyeol Jeon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Lian Cai
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Eunhye Kim
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Zhong Zheng
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Euibae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
| | - Eunsong Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Gangwon 200-710, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361‑763, Republic of Korea
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Jeon Y, Yoon JD, Cai L, Hwang SU, Kim E, Lee E, Jeung EB, Hyun SH. Effect of zinc on in vitro development of porcine embryos. Theriogenology 2015; 84:531-7. [PMID: 26047708 DOI: 10.1016/j.theriogenology.2015.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 03/01/2015] [Accepted: 04/11/2015] [Indexed: 10/23/2022]
Abstract
This study aimed to investigate the effect of zinc on in vitro development of porcine embryos. We evaluated the effects of zinc on blastocysts formation and investigated gene expression at zinc-deficient and supplemented conditions. Zinc-deficient in vitro condition was induced by 10-μM N,N,N',N'-tetrakis-(2-pyridylmethyl)-ethylendiamine (TPEN) (zinc chelator) treatment during IVC. On parthenogenetic activated embryos, this treatment significantly decreased cleavage rate and blastocyst formation compared with the control (0.0% and 0.0% vs. 69.0% and 36.0%, respectively). And time effect of the zinc deficiency exposure is observed. Blastocyst formation rate was significantly decreased as zinc-deficient time increases (54.1%, 31.0%, 9.0%, and 1.2% for zinc deficiency during 0, 3, 5, and 7 hours). However, zinc supplementation during IVC supported in vitro embryonic development. On parthenogenetic activated embryos, supplementation of 0.8 μg/mL of zinc during IVC significantly increased blastocyst formation compared with other groups (43.9%, 57.8%, 67.1%, 51.4%, and 52.6% for zinc supplementation of 0, 0.4, 0.8, 1.2, and 1.6 μg/mL). In vitro-fertilized (IVF) embryos showed similar results. The blastocyst formation rate was significantly higher in the 0.8 μg/mL of zinc-supplemented group than in the other groups (21.3%, 24.1%, 36.1%, 25.9%, and 25.2% for zinc supplementation of 0, 0.4, 0.8, 1.2, and 1.6 μg/mL). PCNA, POU5F1, and Bcl2 messenger RNA expressions were unregulated in IVF-derived blastocysts in the 0.8 μg/mL of zinc-supplemented group compared with the control. These results suggest that zinc is required for embryonic development, and supplementation with adequate zinc concentrations during IVC improved the viability of porcine embryos, possibly by increasing PCNA, POU5F1, and Bcl2 gene expression of embryos.
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Affiliation(s)
- Yubyeol Jeon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Lian Cai
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Eunhye Kim
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Eunsong Lee
- Laboratory of Theriogenology, College of Veterinary Medicine, Kangwon National University, Kangwon, Republic of Korea
| | - Eui Bae Jeung
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology (VETEMBIO), College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.
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Zhang X, Zhao Y, Chu Q, Wang ZY, Li H, Chi ZH. Zinc modulates high glucose-induced apoptosis by suppressing oxidative stress in renal tubular epithelial cells. Biol Trace Elem Res 2014; 158:259-67. [PMID: 24591003 DOI: 10.1007/s12011-014-9922-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 01/28/2014] [Indexed: 11/25/2022]
Abstract
Hyperglycemia is a characteristic of diabetic nephropathy, inducing renal tubular cell apoptosis by eliciting oxidative stress and inflammation. Zinc (Zn) is known as an essential trace element in many enzymes and proteins involved in antioxidant defenses, electron transport, and exerting antiapoptotic or cytoprotective effects. In this study, the underlying mechanisms involved in the protective effects of Zn on high glucose-induced cytotoxicity were explored using cultured renal tubular epithelial cells (NRK-52E). The authors discovered that Zn supplementation inhibited high glucose (HG)-induced NRK-52E cell apoptosis by attenuating reactive oxygen species production, inhibiting HG-induced caspase-3 and caspase-9 activation, and inhibiting the release of cytochrome c from mitochondria to the cytosol. Further analysis revealed that Zn supplementation facilitated cell survival through increasing nuclear translocation of NF-E2-related factor 2 (Nrf2), leading to increased regulation of levels of two antioxidant enzymes, hemeoxygenase-1 and glutamate cysteine ligase, which provided an adaptive survival response against the HG-induced oxidative cytotoxicity. Moreover, the Zn-mediated increases in Nrf2 activity were suppressed by the pharmacological inhibition of Akt or extracellular signal-regulated kinase 1/2. Taken together, these findings suggest that Zn antiapoptosis capacity through the activation of Akt and ERK signal pathways leads to Nrf2 activation and, subsequently, Nrf2 target gene induction, thereby protecting the NRK-52E cells from HG-induced apoptosis.
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Affiliation(s)
- Xiuli Zhang
- Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, Liaoning, People's Republic of China
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Lobo JC, Stockler-Pinto MB, Farage NE, Faulin TDES, Abdalla DSP, Torres JPM, Velarde LGC, Mafra D. Reduced plasma zinc levels, lipid peroxidation, and inflammation biomarkers levels in hemodialysis patients: implications to cardiovascular mortality. Ren Fail 2013; 35:680-5. [PMID: 23650973 DOI: 10.3109/0886022x.2013.789960] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Despite the fact that low plasma zinc (Zn) levels play important roles in the oxidative stress, the relationships between lipid peroxidation and inflammation biomarkers with low plasma Zn levels have not been investigated in chronic kidney disease (CKD) patients. The aim of this study was to evaluate the Zn plasma levels, electronegative LDL [LDL(-)] levels, and inflammation markers as predictors of cardiovascular (CV) mortality in hemodialysis (HD) patients. Forty-five HD patients (28 men, 54.2 ± 12.7 years, 62.2 ± 51.4 months on dialysis and BMI 24.3 ± 4.1 kg/m(2)) were studied and compared to 20 healthy individuals (9 men, 51.6 ± 15.6 years, BMI 25.2 ± 3.9 kg/m(2)) and followed for 24 months to investigate the risks for CV mortality. LDL(-) levels were measured by ELISA, plasma Zn levels by atomic absorption spectrophotometry, C-reactive protein (CRP) level by immunoturbidimetric method, and tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), monocyte chemotactic protein-1 (MCP-1), and plasminogen activator inhibitor-1 (PAI-1) levels by a multiplex assay kit. HD patients presented low plasma Zn levels (54.9 ± 16.1 μg/dL) and high-LDL(-) (0.18 ± 0.12 U/L) and TNF-α (5.5 ± 2.2 pg/mL) levels when compared to healthy subjects (78.8 ± 9.4μ g/dL, 0.10 ± 0.08U/L, 2.4 ± 1.1 pg/mL, respectively, p < 0.05). Zn plasma levels were negatively correlated to TNF-α (r = -0.49; p = 0.0001) and LDL(-) (r = -0.33; p = 0.008). During the 2 years, 24.4% of the patients died, all due to CV disease. Analysis by the Cox model showed that high CRP, TNF-α, IL-6 levels, and long duration of HD were significant predictors of mortality. In conclusion, reduced Zn levels were associated with lipid peroxidation and inflammation, and we confirm here in a Brazilian cohort of HD patients that inflammation markers are strong predictors of CV death.
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Affiliation(s)
- Julie Calixto Lobo
- Institute of Biophysic Carlos Chagas Filho, Health Sciense Centre, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Swardfager W, Herrmann N, McIntyre RS, Mazereeuw G, Goldberger K, Cha DS, Schwartz Y, Lanctôt KL. Potential roles of zinc in the pathophysiology and treatment of major depressive disorder. Neurosci Biobehav Rev 2013; 37:911-29. [PMID: 23567517 DOI: 10.1016/j.neubiorev.2013.03.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 03/19/2013] [Accepted: 03/27/2013] [Indexed: 12/17/2022]
Abstract
Incomplete response to monoaminergic antidepressants in major depressive disorder (MDD), and the phenomenon of neuroprogression, suggests a need for additional pathophysiological markers and pharmacological targets. Neuronal zinc is concentrated exclusively within glutamatergic neurons, acting as an allosteric modulator of the N-methyl D-aspartate and other receptors that regulate excitatory neurotransmission and neuroplasticity. Zinc-containing neurons form extensive associational circuitry throughout the cortex, amygdala and hippocampus, which subserve mood regulation and cognitive functions. In animal models of depression, zinc is reduced in these circuits, zinc treatment has antidepressant-like effects and dietary zinc insufficiency induces depressive behaviors. Clinically, serum zinc is lower in MDD, which may constitute a state-marker of illness and a risk factor for treatment-resistance. Marginal zinc deficiency in MDD may relate to multiple putative mechanisms underlying core symptomatology and neuroprogression (e.g. immune dysfunction, monoamine metabolism, stress response dysregulation, oxidative/nitrosative stress, neurotrophic deficits, transcriptional/epigenetic regulation of neural networks). Initial randomized trials suggest a benefit of zinc supplementation. In summary, molecular and animal behavioral data support the clinical significance of zinc in the setting of MDD.
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Affiliation(s)
- Walter Swardfager
- Neuropharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada
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Miao X, Wang Y, Sun J, Sun W, Tan Y, Cai L, Zheng Y, Su G, Liu Q, Wang Y. Zinc protects against diabetes-induced pathogenic changes in the aorta: roles of metallothionein and nuclear factor (erythroid-derived 2)-like 2. Cardiovasc Diabetol 2013; 12:54. [PMID: 23536959 PMCID: PMC3621739 DOI: 10.1186/1475-2840-12-54] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 03/02/2013] [Indexed: 11/15/2022] Open
Abstract
Background Cardiovascular diseases remain a leading cause of the mortality world-wide, which is related to several risks, including the life style change and the increased diabetes prevalence. The present study was to explore the preventive effect of zinc on the pathogenic changes in the aorta. Methods A genetic type 1 diabetic OVE26 mouse model was used with/without zinc supplementation for 3 months. To determine gender difference either for pathogenic changes in the aorta of diabetic mice or for zinc protective effects on diabetes-induced pathogenic changes, both males and females were investigated in parallel by histopathological and immunohistochemical examinations, in combination of real-time PCR assay. Results Diabetes induced significant increases in aortic oxidative damage, inflammation, and remodeling (increased fibrosis and wall thickness) without significant difference between genders. Zinc treatment of these diabetic mice for three months completely prevented the above pathogenic changes in the aorta, and also significantly up-regulated the expression and function of nuclear factor (erythroid-derived 2)-like 2 (Nrf2), a pivotal regulator of anti-oxidative mechanism, and the expression of metallothionein (MT), a potent antioxidant. There was gender difference for the protective effect of zinc against diabetes-induced pathogenic changes and the up-regulated levels of Nrf2 and MT in the aorta. Conclusions These results suggest that zinc supplementation provides a significant protection against diabetes-induced pathogenic changes in the aorta without gender difference in the type 1 diabetic mouse model. The aortic protection by zinc against diabetes-induced pathogenic changes is associated with the up-regulation of both MT and Nrf2 expression.
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Affiliation(s)
- Xiao Miao
- Department of Ophthalmology, the Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China
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Abstract
After iron, zinc is the most abundant essential trace metal. Intracellular zinc ([Zn]i) is maintained across a wide range of cells and species in a tight quota (100 to 500 μM) by a dynamic process of transport, intracellular vesicular storage, and binding to a large number of proteins (estimated at 3-10% of human proteome). As such, zinc is an integral component of numerous metalloenzymes, structural proteins, and transcription factors. It is generally assumed that a vanishingly small component of [Zn]i, referred to as free or labile zinc, and operationally defined as the pool sensitive to chelation (by agents such as N, N, N’, N’-tetrakis [2-pyridylmethyl] ethylenediamine [TPEN]) and capable of detection by a variety of chemical and genetic sensors, participates in signal transduction pathways. Zinc deficiencies, per se, can arise from acquired (malnutrition, alcoholism) or genetic (mutations in molecules affecting zinc homeostasis, the informative and first example being acrodermatitis enteropathica) factors or as a component of various diseases (e.g., sickle cell disease, cystic fibrosis, sepsis). Hypozincemia has profound effects on developing humans, and all facets of physiological function (neuronal, endocrine, immunological) are affected, although considerably less is known regarding cardiovascular pathophysiology. In this review, we provide an update on current knowledge of molecular and cellular aspects of zinc homeostasis and then focus on implications of zinc signaling in pulmonary endothelium as it relates to programmed cell death, altered contractility, and septic and aseptic injury to this segment of the lung.
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Affiliation(s)
- Kalidasan Thambiayya
- Department of Bioengineering, University of Pittsburgh and University of Pittsburgh School of Medicine and Graduate School Public Health, Pittsburgh, Pennsylvania, USA
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Prach M, Stone V, Proudfoot L. Zinc oxide nanoparticles and monocytes: Impact of size, charge and solubility on activation status. Toxicol Appl Pharmacol 2013; 266:19-26. [DOI: 10.1016/j.taap.2012.10.020] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 09/19/2012] [Accepted: 10/17/2012] [Indexed: 02/07/2023]
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Zhang X, Liang D, Guo B, Yang L, Wang L, Ma J. Zinc inhibits high glucose-induced apoptosis in peritoneal mesothelial cells. Biol Trace Elem Res 2012; 150:424-32. [PMID: 22826039 DOI: 10.1007/s12011-012-9473-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 06/26/2012] [Indexed: 10/28/2022]
Abstract
Zinc (Zn) plays an important role in influencing many types of apoptosis. However, its function in apoptosis in peritoneal mesothelial cells (PMCs) remains unknown. Here, we studied the effects of Zn on high glucose (HG)-induced apoptosis in rat PMCs (RPMCs) and examined the underlying molecular mechanisms. We found that Zn supplementation inhibited HG-induced RPMC apoptosis significantly, by attenuating reactive oxygen species (ROS) production, inhibiting HG-induced sFasR and sFasL over-expression, caspase-8 and caspase-3 activation, and inhibiting release of cytochrome c from mitochondria to the cytosol. Further analysis revealed that Zn supplementation facilitated cell survival through activation of the phosphatidylinositol 3-kinase/Akt signaling pathway and MAPK/ERK pathways. These results indicate that Zn can inhibit apoptosis in HG-induced RPMCs by several independent mechanisms, including an indirect antioxidative effect and probably by inhibition of caspase-8 and caspase-3 activation.
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Affiliation(s)
- Xiuli Zhang
- Department of Nephrology, The First Affiliated Hospital of China Medical University, 155th Nanjing North Street, Shenyang, Liaoning, 110001, People's Republic of China
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Zinc and regulation of inflammatory cytokines: implications for cardiometabolic disease. Nutrients 2012; 4:676-94. [PMID: 22852057 PMCID: PMC3407988 DOI: 10.3390/nu4070676] [Citation(s) in RCA: 174] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 06/08/2012] [Accepted: 06/25/2012] [Indexed: 12/17/2022] Open
Abstract
In atherosclerosis and diabetes mellitus, the concomitant presence of low-grade systemic inflammation and mild zinc deficiency highlights a role for zinc nutrition in the management of chronic disease. This review aims to evaluate the literature that reports on the interactions of zinc and cytokines. In humans, inflammatory cytokines have been shown both to up- and down-regulate the expression of specific cellular zinc transporters in response to an increased demand for zinc in inflammatory conditions. The acute phase response includes a rapid decline in the plasma zinc concentration as a result of the redistribution of zinc into cellular compartments. Zinc deficiency influences the generation of cytokines, including IL-1β, IL-2, IL-6, and TNF-α, and in response to zinc supplementation plasma cytokines exhibit a dose-dependent response. The mechanism of action may reflect the ability of zinc to either induce or inhibit the activation of NF-κB. Confounders in understanding the zinc-cytokine relationship on the basis of in vitro experimentation include methodological issues such as the cell type and the means of activating cells in culture. Impaired zinc homeostasis and chronic inflammation feature prominently in a number of cardiometabolic diseases. Given the high prevalence of zinc deficiency and chronic disease globally, the interplay of zinc and inflammation warrants further examination.
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Sharif R, Thomas P, Zalewski P, Fenech M. The role of zinc in genomic stability. Mutat Res 2012; 733:111-121. [PMID: 21939673 DOI: 10.1016/j.mrfmmm.2011.08.009] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 08/23/2011] [Accepted: 08/25/2011] [Indexed: 05/31/2023]
Abstract
Zinc (Zn) is an essential trace element required for maintaining both optimal human health and genomic stability. Zn plays a critical role in the regulation of DNA repair mechanisms, cell proliferation, differentiation and apoptosis involving the action of various transcriptional factors and DNA or RNA polymerases. Zn is an essential cofactor or structural component for important antioxidant defence proteins and DNA repair enzymes such as Cu/Zn SOD, OGG1, APE and PARP and may also affect activities of enzymes such as BHMT and MTR involved in methylation reactions in the folate-methionine cycle. This review focuses on the role of Zn in the maintenance of genome integrity and the effects of deficiency or excess on genomic stability events and cell death.
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Affiliation(s)
- Razinah Sharif
- CSIRO Food and Nutritional Sciences, Adelaide, South Australia, Australia
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Cytotoxicity of superoxide dismutase 1 in cultured cells is linked to Zn2+ chelation. PLoS One 2012; 7:e36104. [PMID: 22558346 PMCID: PMC3338499 DOI: 10.1371/journal.pone.0036104] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 03/29/2012] [Indexed: 12/20/2022] Open
Abstract
Neurodegeneration in protein-misfolding disease is generally assigned to toxic function of small, soluble protein aggregates. Largely, these assignments are based on observations of cultured neural cells where the suspect protein material is titrated directly into the growth medium. In the present study, we use this approach to shed light on the cytotoxic action of the metalloenzyme Cu/Zn superoxide dismutase 1 (SOD1), associated with misfolding and aggregation in amyotrophic lateral sclerosis (ALS). The results show, somewhat unexpectedly, that the toxic species of SOD1 in this type of experimental setting is not an aggregate, as typically observed for proteins implicated in other neuro-degenerative diseases, but the folded and fully soluble apo protein. Moreover, we demonstrate that the toxic action of apoSOD1 relies on the protein's ability to chelate Zn2+ ions from the growth medium. The decreased cell viability that accompanies this extraction is presumably based on disturbed Zn2+ homeostasis. Consistently, mutations that cause global unfolding of the apoSOD1 molecule or otherwise reduce its Zn2+ affinity abolish completely the cytotoxic response. So does the addition of surplus Zn2+. Taken together, these observations point at a case where the toxic response of cultured cells might not be related to human pathology but stems from the intrinsic limitations of a simplified cell model. There are several ways proteins can kill cultured neural cells but all of these need not to be relevant for neurodegenerative disease.
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Byun HJ, Cho KH, Eun HC, Lee MJ, Lee Y, Lee S, Chung JH. Lipid ingredients in moisturizers can modulate skin responses to UV in barrier-disrupted human skin in vivo. J Dermatol Sci 2012; 65:110-7. [PMID: 22209282 DOI: 10.1016/j.jdermsci.2011.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 11/07/2011] [Accepted: 12/03/2011] [Indexed: 01/07/2023]
Abstract
BACKGROUND Chemicals with a molecular weight <500 and adequate lipid solubility can penetrate the intact human skin. As many lipid ingredients in moisturizers have molecular weights <500, the lipid ingredients may penetrate into the skin and affect skin responses to UV; however, little is known about this phenomenon. OBJECTIVE To evaluate the effects of major lipid ingredients in moisturizers on skin responses to UV in tape-stripped human skin in vivo. METHODS We evaluated the effects of three major lipid ingredients in moisturizers (cholesterol, linoleic acid, and a synthetic ceramide, N-oleoyl-phytosphingosine) on skin responses to UV in the tape-stripped skin of healthy volunteers. After 2 days of lipid-application, the areas were irradiated with UV, and skin samples were obtained 24h after irradiation. Histologic features and the expression of the markers of collagen metabolism and inflammatory mediators were evaluated. RESULTS Compared to vehicle, topical cholesterol significantly decreased the degree of dermal inflammatory infiltrates and exocytosis, and also decreased the expression of MMP-1, IL-6, and IL-1ß mRNA. In contrast, topical linoleic acid increased the induction of apoptotic cells, and the expression of MMP-1 and IL-6 mRNA. N-oleoyl-phytosphingosine increased the expression of MMP-1 and IL-6 mRNA, while decreasing the expression of COX-2 mRNA. CONCLUSIONS Topical cholesterol can protect the barrier-disrupted skin against UV-induced damage, while linoleic acid or N-oleoyl-phytosphingosine alone has the potential to aggravate the damage.
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Affiliation(s)
- Hee Jin Byun
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Republic of Korea
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Khadilkar VV, Pandit DS, Khadilkar AV, Chiplonkar SA, Kinare AS. Diet and exercise intervention, with special reference to micronutrients, reduces cardiometabolic risk in overweight children. Indian J Endocrinol Metab 2012; 16:124-133. [PMID: 22276263 PMCID: PMC3263180 DOI: 10.4103/2230-8210.91207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To study the effect of lifestyle intervention in the presence of multivitamin-zinc supplementation in improving the cardiometabolic status of overweight children. MATERIALS AND METHODS Data were evaluated in 74 overweight children (11.3 ± 2.9 years) randomly assigned to three groups of intervention for 4 months as follows: group A: diet-exercise counseling with multivitamin-zinc supplementation; group B: diet-exercise counseling; and group C: placebo. Anthropometric, biochemical, carotid arterial and lifestyle parameters were assessed. RESULTS Lifestyle counseling resulted in significant reduction in inactivity, energy and fat intakes and increase in micronutrient density of diets and physical activity in groups A and B in comparison to group C. Percent decline in body fat was more in group A than in groups B and C. Percent change in triglycerides (-13.7%) was significantly higher in group A than in groups B (-5.9%) and C (5.7%). Pulse wave velocity and elasticity modulus reduced and arterial compliance improved significantly in group A than in group B. CONCLUSION Multivitamin-zinc supplementation with lifestyle intervention has a positive effect of on the cardiometabolic status of overweight children.
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Affiliation(s)
- Vaman V. Khadilkar
- Hirabai Cowasji Jehangir Medical Research Institute, Sassoon Road, Pune, India
| | - Deepa S. Pandit
- Department of Biometry and Nutrition, Agharkar Research Institute, Agharakar Road, Pune, Maharashtra, India
| | | | | | - Arun S. Kinare
- Hirabai Cowasji Jehangir Medical Research Institute, Sassoon Road, Pune, India
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Lee S, Eskin SG, Shah AK, Schildmeyer LA, McIntire LV. Effect of zinc and nitric oxide on monocyte adhesion to endothelial cells under shear stress. Ann Biomed Eng 2011; 40:697-706. [PMID: 22009315 DOI: 10.1007/s10439-011-0434-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 10/06/2011] [Indexed: 11/26/2022]
Abstract
This study describes the effect of zinc on monocyte adhesion to endothelial cells under different shear stress regimens, which may trigger atherogenesis. Human umbilical vein endothelial cells were exposed to steady shear stress (15 dynes/cm(2) or 1 dyne/cm(2)) or reversing shear stress (time average 1 dyne/cm(2)) for 24 h. In all shear stress regimes, zinc deficiency enhanced THP-1 cell adhesion, while heparinase III reduced monocyte adhesion following reversing shear stress exposure. Unlike other shear stress regimes, reversing shear stress alone enhanced monocyte adhesion, which may be associated with increased H(2)O(2) and superoxide together with relatively low levels of nitric oxide (NO) production. L-N(G)-Nitroarginine methyl ester (L-NAME) treatment increased monocyte adhesion under 15 dynes/cm(2) and under reversing shear stress. After reversing shear stress, monocyte adhesion dramatically increased with heparinase III treatment followed by a zinc scavenger. Static culture experiments supported the reduction of monocyte adhesion by zinc following endothelial cell cytokine activation. These results suggest that endothelial cell zinc levels are important for the inhibition of monocyte adhesion to endothelial cells, and may be one of the key factors in the early stages of atherogenesis.
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Affiliation(s)
- Sungmun Lee
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University School of Medicine, Atlanta, GA 30332-0535, USA
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Maes M, Ruckoanich P, Chang YS, Mahanonda N, Berk M. Multiple aberrations in shared inflammatory and oxidative & nitrosative stress (IO&NS) pathways explain the co-association of depression and cardiovascular disorder (CVD), and the increased risk for CVD and due mortality in depressed patients. Prog Neuropsychopharmacol Biol Psychiatry 2011; 35:769-83. [PMID: 20561554 DOI: 10.1016/j.pnpbp.2010.06.008] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 05/24/2010] [Accepted: 06/09/2010] [Indexed: 11/19/2022]
Abstract
There is evidence that there is a bidirectional relationship between major depression and cardiovascular disorder (CVD): depressed patients are a population at risk for increased cardiac morbidity and mortality, and depression is more frequent in patients who suffer from CVD. There is also evidence that inflammatory and oxidative and nitrosative stress (IO&NS) pathways underpin the common pathophysiology of both CVD and major depression. Activation of these pathways may increase risk for both disorders and contribute to shared risk. The shared IO&NS pathways that may contribute to CVD and depression comprise the following: increased levels of pro-inflammatory cytokines, like interleukin-1β (IL-1β), IL-2, IL-6, IL-8, IL-12, tumor necrosis factor-α, and interferon-γ; T cell activation; increased acute phase proteins, like C-reactive protein, haptoglobin, fibrinogen and α1-antitrypsin; complement factors; increased LPS load through bacterial translocation and subsequent gut-derived inflammation; induction of indoleamine 2,3-dioxygenase with increased levels of tryptophan catabolites; decreased levels of antioxidants, like coenzyme Q10, zinc, vitamin E, glutathione and glutathione peroxidase; increased O&NS characterized by oxidative damage to low density lipoprotein (LDL) and phospholipid inositol, increased malondialdehyde, and damage to DNA and mitochondria; increased nitrosative stress; and decreased ω3 polyunsaturated fatty acids (PUFAs). The complex interplay between the abovementioned IO&NS pathways in depression results in pro-atherogenic effects and should be regarded as a risk factor to future clinical CVD and due mortality. We suggest that major depression should be added as a risk factor to the Charlson "comorbidity" index. It is advised that patients with (sub)chronic or recurrent major depression should routinely be assessed by serology tests to predict if they have an increased risk to cardiovascular disorders.
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Thambiayya K, Wasserloos KJ, Huang Z, Kagan VE, St Croix CM, Pitt BR. LPS-induced decrease in intracellular labile zinc, [Zn]i, contributes to apoptosis in cultured sheep pulmonary artery endothelial cells. Am J Physiol Lung Cell Mol Physiol 2011; 300:L624-32. [PMID: 21239534 DOI: 10.1152/ajplung.00376.2010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A role in signal transduction for a vanishingly small labile pool of intracellular zinc ([Zn](i)) has been inferred by the sensitivity of various physiological pathways to zinc chelators such as N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN) and/or associations with changes in nonprotein-bound zinc-sensitive fluorophores. Although we (44) reported that LPS-induced apoptosis in cultured sheep pulmonary artery endothelial cells (SPAEC) was exacerbated by TPEN, 1) we did not detect acute (30 min) changes in [Zn](i), and 2) it is unclear from other reports whether LPS increases or decreases [Zn](i) and whether elevations or decreases in [Zn](i) are associated with cell death and/or apoptosis. In the present study, we used both chemical (FluoZin-3 via live cell epifluorescence microscopy and fluorescence-activated cell sorting) and genetic (luciferase activity of a chimeric reporter encoding zinc-sensitive metal-response element and changes in steady-state mRNA of zinc importer, SLC39A14 or ZIP14) techniques to show that LPS caused a delayed time-dependent (2-4 h) decrease in [Zn](i) in SPAEC. A contributory role of decreases in [Zn](i) in LPS-induced apoptosis (as determined by caspase-3/7 activation, annexin-V binding, and cytochrome c release) in SPAECs was revealed by mimicking the effect of LPS with the zinc chelator, TPEN, and inhibiting LPS- (or TPEN)-induced apoptosis with exogenous zinc. Collectively, these are the first data demonstrating a signaling role for decrease in [Zn](i) in pulmonary endothelial cells and suggest that endogenous levels of labile zinc may affect sensitivity of pulmonary endothelium to the important and complex proapoptotic stimulus of LPS.
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Affiliation(s)
- Kalidasan Thambiayya
- Department of Bioengineering, University of Pittsburgh and Universityof Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
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John E, Laskow TC, Buchser WJ, Pitt BR, Basse PH, Butterfield LH, Kalinski P, Lotze MT. Zinc in innate and adaptive tumor immunity. J Transl Med 2010; 8:118. [PMID: 21087493 PMCID: PMC3002329 DOI: 10.1186/1479-5876-8-118] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Accepted: 11/18/2010] [Indexed: 12/19/2022] Open
Abstract
Zinc is important. It is the second most abundant trace metal with 2-4 grams in humans. It is an essential trace element, critical for cell growth, development and differentiation, DNA synthesis, RNA transcription, cell division, and cell activation. Zinc deficiency has adverse consequences during embryogenesis and early childhood development, particularly on immune functioning. It is essential in members of all enzyme classes, including over 300 signaling molecules and transcription factors. Free zinc in immune and tumor cells is regulated by 14 distinct zinc importers (ZIP) and transporters (ZNT1-8). Zinc depletion induces cell death via apoptosis (or necrosis if apoptotic pathways are blocked) while sufficient zinc levels allows maintenance of autophagy. Cancer cells have upregulated zinc importers, and frequently increased zinc levels, which allow them to survive. Based on this novel synthesis, approaches which locally regulate zinc levels to promote survival of immune cells and/or induce tumor apoptosis are in order.
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Affiliation(s)
- Erica John
- Department of Surgery, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Thomas C Laskow
- Department of Surgery, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - William J Buchser
- Department of Surgery, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Bruce R Pitt
- Department of Occupational Health, University of Pittsburgh, 100 Technology Drive, Pittsburgh, PA 15219, USA
| | - Per H Basse
- Department of Immunology, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Lisa H Butterfield
- Department of Medicine, University of Pittsburgh, 3550 Terrace Street, Pittsburgh, PA 15261, USA
| | - Pawel Kalinski
- Department of Surgery, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
| | - Michael T Lotze
- Department of Surgery, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
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50
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Foster M, Samman S. Zinc and redox signaling: perturbations associated with cardiovascular disease and diabetes mellitus. Antioxid Redox Signal 2010; 13:1549-73. [PMID: 20568953 DOI: 10.1089/ars.2010.3111] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cellular signal transduction pathways are influenced by the zinc and redox status of the cell. Numerous chronic diseases, including cardiovascular disease (CVD) and diabetes mellitus (DM), have been associated with impaired zinc utilization and increased oxidative stress. In humans, mutations in the MT-1A and ZnT8 genes, both of which are involved in the maintenance of zinc homeostasis, have been linked with DM development. Changes in levels of intracellular free zinc may exacerbate oxidative stress in CVD and DM by impacting glutathione homeostasis, nitric oxide signaling, and nuclear factor-kappa B-dependent cellular processes. Zinc ions have been shown to influence insulin and leptin signaling via the phosphoinositide 3′-kinase/Akt pathway, potentially linking an imbalance of zinc at the cellular level to insulin resistance and dyslipidemia. The oxidative modification of cysteine residues in zinc coordination sites in proteins has been implicated in cellular signaling and regulatory pathways. Despite the many interactions between zinc and cellular stress responses, studies investigating the potential therapeutic benefit of zinc supplementation in the prevention and treatment of oxidative stress-related chronic disease in humans are few and inconsistent. Further well-designed randomized controlled trials are needed to determine the effects of zinc supplementation in populations at various stages of CVD and DM progression.
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Affiliation(s)
- Meika Foster
- Discipline of Nutrition and Metabolism, School of Molecular Bioscience, University of Sydney, Sydney, NSW, Australia
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