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Faraji P, Kühn H, Ahmadian S. Multiple Roles of Apolipoprotein E4 in Oxidative Lipid Metabolism and Ferroptosis During the Pathogenesis of Alzheimer's Disease. J Mol Neurosci 2024; 74:62. [PMID: 38958788 PMCID: PMC11222241 DOI: 10.1007/s12031-024-02224-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/14/2024] [Indexed: 07/04/2024]
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disease worldwide and has a great socio-economic impact. Modified oxidative lipid metabolism and dysregulated iron homeostasis have been implicated in the pathogenesis of this disorder, but the detailed pathophysiological mechanisms still remain unclear. Apolipoprotein E (APOE) is a lipid-binding protein that occurs in large quantities in human blood plasma, and a polymorphism of the APOE gene locus has been identified as risk factors for AD. The human genome involves three major APOE alleles (APOE2, APOE3, APOE4), which encode for three subtly distinct apolipoprotein E isoforms (APOE2, APOE3, APOE4). The canonic function of these apolipoproteins is lipid transport in blood and brain, but APOE4 allele carriers have a much higher risk for AD. In fact, about 60% of clinically diagnosed AD patients carry at least one APOE4 allele in their genomes. Although the APOE4 protein has been implicated in pathophysiological key processes of AD, such as extracellular beta-amyloid (Aβ) aggregation, mitochondrial dysfunction, neuroinflammation, formation of neurofibrillary tangles, modified oxidative lipid metabolism, and ferroptotic cell death, the underlying molecular mechanisms are still not well understood. As for all mammalian cells, iron plays a crucial role in neuronal functions and dysregulation of iron homeostasis has also been implicated in the pathogenesis of AD. Imbalances in iron homeostasis and impairment of the hydroperoxy lipid-reducing capacity induce cellular dysfunction leading to neuronal ferroptosis. In this review, we summarize the current knowledge on APOE4-related oxidative lipid metabolism and the potential role of ferroptosis in the pathogenesis of AD. Pharmacological interference with these processes might offer innovative strategies for therapeutic interventions.
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Affiliation(s)
- Parisa Faraji
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
- Department of Biochemistry, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Hartmut Kühn
- Department of Biochemistry, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Charitéplatz 1, 10117, Berlin, Germany.
| | - Shahin Ahmadian
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
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Exploring Whether Iron Sequestration within the CNS of Patients with Alzheimer’s Disease Causes a Functional Iron Deficiency That Advances Neurodegeneration. Brain Sci 2023; 13:brainsci13030511. [PMID: 36979320 PMCID: PMC10046656 DOI: 10.3390/brainsci13030511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/08/2023] [Accepted: 03/13/2023] [Indexed: 03/22/2023] Open
Abstract
The involvement of iron in the pathogenesis of Alzheimer’s disease (AD) may be multifaceted. Besides potentially inducing oxidative damage, the bioavailability of iron may be limited within the central nervous system, creating a functionally iron-deficient state. By comparing staining results from baseline and modified iron histochemical protocols, iron was found to be more tightly bound within cortical sections from patients with high levels of AD pathology compared to subjects with a diagnosis of something other than AD. To begin examining whether the bound iron could cause a functional iron deficiency, a protein-coding gene expression dataset of initial, middle, and advanced stages of AD from olfactory bulb tissue was analyzed for iron-related processes with an emphasis on anemia-related changes in initial AD to capture early pathogenic events. Indeed, anemia-related processes had statistically significant alterations, and the significance of these changes exceeded those for AD-related processes. Other changes in patients with initial AD included the expressions of transcripts with iron-responsive elements and for genes encoding proteins for iron transport and mitochondrial-related processes. In the latter category, there was a decreased expression for the gene encoding pitrilysin metallopeptidase 1 (PITRM1). Other studies have shown that PITRM1 has an altered activity in patients with AD and is associated with pathological changes in this disease. Analysis of a gene expression dataset from PITRM1-deficient or sufficient organoids also revealed statistically significant changes in anemia-like processes. These findings, together with supporting evidence from the literature, raise the possibility that a pathogenic mechanism of AD could be a functional deficiency of iron contributing to neurodegeneration.
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The Neuroprotective Activities of the Novel Multi-Target Iron-Chelators in Models of Alzheimer's Disease, Amyotrophic Lateral Sclerosis and Aging. Cells 2023; 12:cells12050763. [PMID: 36899898 PMCID: PMC10001413 DOI: 10.3390/cells12050763] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/03/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
The concept of chelation therapy as a valuable therapeutic approach in neurological disorders led us to develop multi-target, non-toxic, lipophilic, brain-permeable compounds with iron chelation and anti-apoptotic properties for neurodegenerative diseases, such as Parkinson's disease (PD), Alzheimer's disease (AD), age-related dementia and amyotrophic lateral sclerosis (ALS). Herein, we reviewed our two most effective such compounds, M30 and HLA20, based on a multimodal drug design paradigm. The compounds have been tested for their mechanisms of action using animal and cellular models such as APP/PS1 AD transgenic (Tg) mice, G93A-SOD1 mutant ALS Tg mice, C57BL/6 mice, Neuroblastoma × Spinal Cord-34 (NSC-34) hybrid cells, a battery of behavior tests, and various immunohistochemical and biochemical techniques. These novel iron chelators exhibit neuroprotective activities by attenuating relevant neurodegenerative pathology, promoting positive behavior changes, and up-regulating neuroprotective signaling pathways. Taken together, these results suggest that our multifunctional iron-chelating compounds can upregulate several neuroprotective-adaptive mechanisms and pro-survival signaling pathways in the brain and might function as ideal drugs for neurodegenerative disorders, such as PD, AD, ALS, and aging-related cognitive decline, in which oxidative stress and iron-mediated toxicity and dysregulation of iron homeostasis have been implicated.
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Sahoo K, Sharma A. Understanding the mechanistic roles of environmental heavy metal stressors in regulating ferroptosis: adding new paradigms to the links with diseases. Apoptosis 2023; 28:277-292. [PMID: 36611106 DOI: 10.1007/s10495-022-01806-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2022] [Indexed: 01/09/2023]
Abstract
Ferroptosis is a new type of iron-dependent cell death induced by a failure of the lipid repair protein GPX4 or the Xc- antiporter, which is essential for glutathione production. Some heavy metals such as arsenic (As), cobalt (Co), cadmium (Cd), iron (Fe), magnesium (Mg), manganese (Mn), nickel (Ni), mercury (Hg) as well as zinc (Zn) are shown to induce ferroptotic cell death involving the generation of oxidative stress, mitochondrial dysfunctioning, lipid peroxidation, and several other cellular etiologies. However, selenium (Se) treatment has been shown to enhance adaptive transcription responses to protect cells from ferroptosis. Heavy metals like Cadmium exposure activated ALK4/5 signaling via Smad3 and Akt signaling which leads to cell death mechanism. Continuous exposure to a small dose of mercury can damage tissues, and methylmercury bind to sulfhydryl proteins and GSH, this elevates oxidative stress, free radical accumulation, glutathione depletion, mitochondrial damage, and inhibited the nuclear factor-κB pathway which leads to ferroptotic cell death. Animals exposed to nickel and cobalt may have increased lipid peroxidation which can induce ferroptosis. Glutathione depletion is caused by Zn intoxication and exposure to manganese. These metals are systemic toxins that have been shown adverse effects on humans. Ferroptosis has recently been related to several pathological disorders, including, Alzheimer's disease, Parkinson's disease, Huntington's disease, as well as cardiovascular disease, and any type of cancer. For these disorders and some heavy metal toxicity, ferroptosis suppression needs to be looked upon as a promising therapeutic choice.
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Affiliation(s)
- Kumudini Sahoo
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli, Bijnor-Sisendi Road, Post Office Mati, Lucknow, 226002, India.,School of Pharmacy and Life Sciences, Centurion University of Technology and Management, Bhubaneswar, Odisha, India
| | - Ankita Sharma
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research-Raebareli, Bijnor-Sisendi Road, Post Office Mati, Lucknow, 226002, India.
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Chen L, Zhao Q, Du X, Chen X, Jiao Q, Jiang H. Effects of oxidative stress caused by iron overload on arachidonic acid metabolites in MES23.5 cells. J Biosci 2022. [DOI: 10.1007/s12038-022-00321-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Zhang H, Zhou W, Li J, Qiu Z, Wang X, Xu H, Wang H, Lu D, Qi R. Senegenin Rescues PC12 Cells with Oxidative Damage Through Inhibition of Ferroptosis. Mol Neurobiol 2022; 59:6983-6992. [PMID: 36068400 DOI: 10.1007/s12035-022-03014-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/23/2022] [Indexed: 11/30/2022]
Abstract
Oxidative stress is one of the pathological mechanisms of Alzheimer's disease (AD), and ferroptosis has been determined to be involved in neurodegenerative diseases such as AD. Senegenin (Sen) prevents oxidative damage in nerve cells via a mechanism that may be highly related to ferroptosis. However, the mechanism of ferroptosis pathway involvement in AD is unclear. In this study, we established a model of PC12 cytotoxic injury induced by Aβ25-35, and we detected the level of oxidative damage, MMP, and ferroptosis-related protein expression. The results showed that, compared with control group, the level of ROS increased, GPX activities decreased, and MDA levels increased in Aβ25-35 group. Aβ25-35 could induce mitochondrial depolarization in PC12 cells and Fer-1 could not reverse this damage. WB revealed that Aβ25-35 group had increased ACSL4 and PEBP1 proteins, and decreased GPX4 protein. After adding Sen in the model, the level of oxidative damage was reduced, and mitochondrial depolarization was reversed compared with Aβ25-35 group. WB suggested that the expression of ACSL4 and PEBP1 proteins decreased, and the expression of GPX4 protein increased by Sen treatment. In conclusion, we found that Sen exhibits strong neuroprotective activity against Aβ25-35 induced oxidative damage and lipid metabolic associated with ferroptosis. Inhibiting nerve cell ferroptosis might facilitate the future development of strategies to AD.
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Affiliation(s)
- Heping Zhang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China
| | - Wei Zhou
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, Guangdong, China.,Department of Pathology, Guangzhou Chest Hospital, No. 62 Hengzhigang Rd, Guangzhou, 510095, Guangdong, China
| | - Jianling Li
- Department of Anesthesiology, First Affiliated Hospital of Jinan University, Guangdong, 510630, Guangzhou, China
| | - Zhaohui Qiu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China.,Department of Pathology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518033, Guangdong, China
| | - Xiaotong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China
| | - Hui Xu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China
| | - Daxiang Lu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China
| | - Renbin Qi
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine, School of Medicine, Jinan University, No. 601 Avenue Huangpu West, Guangzhou, 510632, Guangdong, China.
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Mechanisms of Mitochondrial Malfunction in Alzheimer’s Disease: New Therapeutic Hope. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4759963. [PMID: 35607703 PMCID: PMC9124149 DOI: 10.1155/2022/4759963] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/08/2022] [Accepted: 04/16/2022] [Indexed: 02/05/2023]
Abstract
Mitochondria play a critical role in neuron viability or death as it regulates energy metabolism and cell death pathways. They are essential for cellular energy metabolism, reactive oxygen species production, apoptosis, Ca++ homeostasis, aging, and regeneration. Mitophagy and mitochondrial dynamics are thus essential processes in the quality control of mitochondria. Improvements in several fundamental features of mitochondrial biology in susceptible neurons of AD brains and the putative underlying mechanisms of such changes have made significant progress. AD's etiology has been reported by mitochondrial malfunction and oxidative damage. According to several recent articles, a continual fusion and fission balance of mitochondria is vital in their normal function maintenance. As a result, the shape and function of mitochondria are inextricably linked. This study examines evidence suggesting that mitochondrial dysfunction plays a significant early impact on AD pathology. Furthermore, the dynamics and roles of mitochondria are discussed with the link between mitochondrial malfunction and autophagy in AD has also been explored. In addition, recent research on mitochondrial dynamics and mitophagy in AD is also discussed in this review. It also goes into how these flaws affect mitochondrial quality control. Furthermore, advanced therapy techniques and lifestyle adjustments that lead to improved management of the dynamics have been demonstrated, hence improving the conditions that contribute to mitochondrial dysfunction in AD.
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Holz TG, Kunzler FA, Carra Forte G, Miranda Difini JP, Bernardi Soder R, Watte G, Hochhegger B. In vivo brain iron concentration in healthy individuals at 3.0 T magnetic resonance imaging: a prospective cross-sectional study. Br J Radiol 2022; 95:20210809. [PMID: 35119909 PMCID: PMC10993970 DOI: 10.1259/bjr.20210809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/01/2021] [Accepted: 01/17/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To quantify iron deposits in the basal ganglia and to evaluate its relation to age, sex, body mass index and brain laterality. METHODS Prospective observational study. Data were collected from the patients' electronic medical records. The concentration of iron deposits in the brain was assessed using whole-brain MRI at 3.0 Tesla. RESULTS 138 participants were selected, 69.6% were female and the mean age was 47 ± 19 years. The κ coefficient was very strong (k = 0.92, p < 0.001). Age showed a moderate correlation between iron deposits in the caudate and putamen nuclei, on both right and left sides. In overall and right-handed individuals, a significantly higher iron concentration was observed on the left side for the caudate nucleus, putamen, thalamus, globus pallidus, and centrum semiovale, and for left-handed individuals, it was also observed in the left side-for the putamen and centrum semiovale. A weak correlation was shown between body mass index and left and right substantia nigra, left caudate nuclei, left putamen and right globus pallidus. CONCLUSION Our results showed a significantly higher iron deposit on the left side in most brain regions. In addition, the body mass index may also be related to iron overload, especially in the caudate nucleus. ADVANCES IN KNOWLEDGE Brain iron deposits may be normal, owing to aging, or be pathological, such as neurodegeneration. Thus, it is important to know how much is expected of iron deposition in the brain of healthy populations.
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Affiliation(s)
- Tiago Garcia Holz
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - Felipe Augusto Kunzler
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - Gabriele Carra Forte
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - João Pedro Miranda Difini
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - Ricardo Bernardi Soder
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - Guilherme Watte
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
| | - Bruno Hochhegger
- School of Medicine, Graduate Program in Medicine and Health
Sciences, Pontifical Catholic University of Rio Grande do
Sul, Porto Alegre,
Brazil
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9
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Re DB, Yan B, Calderón-Garcidueñas L, Andrew AS, Tischbein M, Stommel EW. A perspective on persistent toxicants in veterans and amyotrophic lateral sclerosis: identifying exposures determining higher ALS risk. J Neurol 2022; 269:2359-2377. [PMID: 34973105 PMCID: PMC9021134 DOI: 10.1007/s00415-021-10928-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023]
Abstract
Multiple studies indicate that United States veterans have an increased risk of developing amyotrophic lateral sclerosis (ALS) compared to civilians. However, the responsible etiological factors are unknown. In the general population, specific occupational (e.g. truck drivers, airline pilots) and environmental exposures (e.g. metals, pesticides) are associated with an increased ALS risk. As such, the increased prevalence of ALS in veterans strongly suggests that there are exposures experienced by military personnel that are disproportionate to civilians. During service, veterans may encounter numerous neurotoxic exposures (e.g. burn pits, engine exhaust, firing ranges). So far, however, there is a paucity of studies investigating environmental factors contributing to ALS in veterans and even fewer assessing their exposure using biomarkers. Herein, we discuss ALS pathogenesis in relation to a series of persistent neurotoxicants (often emitted as mixtures) including: chemical elements, nanoparticles and lipophilic toxicants such as dioxins, polycyclic aromatic hydrocarbons and polychlorinated biphenyls. We propose these toxicants should be directly measured in veteran central nervous system tissue, where they may have accumulated for decades. Specific toxicants (or mixtures thereof) may accelerate ALS development following a multistep hypothesis or act synergistically with other service-linked exposures (e.g. head trauma/concussions). Such possibilities could explain the lower age of onset observed in veterans compared to civilians. Identifying high-risk exposures within vulnerable populations is key to understanding ALS etiopathogenesis and is urgently needed to act upon modifiable risk factors for military personnel who deserve enhanced protection during their years of service, not only for their short-term, but also long-term health.
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Affiliation(s)
- Diane B Re
- Department of Environmental Health Science, Center for Motor Neuron Biology and Disease, Columbia University, New York, NY, USA
| | - Beizhan Yan
- Department of Geochemistry, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA
| | - Lilian Calderón-Garcidueñas
- Department Biomedical Sciences, College of Health, University of Montana, Missoula, MT, USA
- Universidad del Valle de México, Mexico City, Mexico
| | - Angeline S Andrew
- Department of Neurology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Maeve Tischbein
- Department of Neurology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Elijah W Stommel
- Department of Neurology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.
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10
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Effects of Deferasirox in Alzheimer’s Disease and Tauopathy Animal Models. Biomolecules 2022; 12:biom12030365. [PMID: 35327557 PMCID: PMC8945800 DOI: 10.3390/biom12030365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 02/01/2023] Open
Abstract
The accumulation of iron may contribute to Alzheimer’s disease (AD) and other tauopathies. The iron chelator desferrioxamine slows disease progression in AD patients. However, desferrioxamine requires injection, which is inconvenient and may hinder compliance. We therefore tested an oral iron chelator, desferasirox (Exjade), in transgenic animal models. Tg2576 mice overexpress the mutant human APP protein and produce the Aβ peptide. JNPL3 mice (Tau/Tau) overexpress the mutant human tau protein. Crossing these produced APP/Tau mice, overexpressing both APP and tau. Treating the three models with 1.6 mg deferasirox thrice weekly from age 8 to 14 months did not affect memory as measured by contextual fear conditioning or motor function as measured by rotarod, but tended to decrease hyperphosphorylated tau as measured by AT8 immunohistochemistry and immunoblotting. Deferasirox might act by decreasing iron, which aggregates tau, or directly binding tau to inhibit aggregation.
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11
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Arif HM, Qian Z, Wang R. Signaling Integration of Hydrogen Sulfide and Iron on Cellular Functions. Antioxid Redox Signal 2022; 36:275-293. [PMID: 34498949 DOI: 10.1089/ars.2021.0203] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Significance: Hydrogen sulfide (H2S) is an endogenous signaling molecule, regulating numerous physiological functions from vasorelaxation to neuromodulation. Iron is a well-known bioactive metal ion, being the central component of hemoglobin for oxygen transportation and participating in biomolecule degradation, redox balance, and enzymatic actions. The interplay between H2S and iron metabolisms and functions impacts significantly on the fate and wellness of different types of cells. Recent Advances: Iron level in vivo affects the production of H2S via nonenzymatic reactions. On the contrary, H2S quenches excessive iron inside the cells and regulates the redox status of iron. Critical Issues: Abnormal metabolisms of both iron and H2S are associated with various conditions and diseases such as iron overload, anemia, oxidative stress, and cardiovascular and neurodegenerative diseases. The molecular mechanisms for the interactions between H2S and iron are unsettled yet. Here we review signaling links of the production, metabolism, and their respective and integrative functions of H2S and iron in normalcy and diseases. Future Directions: Physiological and pathophysiological importance of H2S and iron as well as their therapeutic applications should be evaluated jointly, not separately. Future investigation should expand from iron-rich cells and tissues to the others, in which H2S and iron interaction has not received due attention. Antioxid. Redox Signal. 36, 275-293.
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Affiliation(s)
| | - Zhongming Qian
- Institute of Translational & Precision Medicine, Nantong University, Nantong, China
| | - Rui Wang
- Department of Biology, York University, Toronto, Canada
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12
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Majerníková N, den Dunnen WFA, Dolga AM. The Potential of Ferroptosis-Targeting Therapies for Alzheimer's Disease: From Mechanism to Transcriptomic Analysis. Front Aging Neurosci 2022; 13:745046. [PMID: 34987375 PMCID: PMC8721139 DOI: 10.3389/fnagi.2021.745046] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/18/2021] [Indexed: 12/14/2022] Open
Abstract
Alzheimer’s disease (AD), the most common form of dementia, currently affects 40–50 million people worldwide. Despite the extensive research into amyloid β (Aβ) deposition and tau protein hyperphosphorylation (p-tau), an effective treatment to stop or slow down the progression of neurodegeneration is missing. Emerging evidence suggests that ferroptosis, an iron-dependent and lipid peroxidation-driven type of programmed cell death, contributes to neurodegeneration in AD. Therefore, how to intervene against ferroptosis in the context of AD has become one of the questions addressed by studies aiming to develop novel therapeutic strategies. However, the underlying molecular mechanism of ferroptosis in AD, when ferroptosis occurs in the disease course, and which ferroptosis-related genes are differentially expressed in AD remains to be established. In this review, we summarize the current knowledge on cell mechanisms involved in ferroptosis, we discuss how these processes relate to AD, and we analyze which ferroptosis-related genes are differentially expressed in AD brain dependant on cell type, disease progression and gender. In addition, we point out the existing targets for therapeutic options to prevent ferroptosis in AD. Future studies should focus on developing new tools able to demonstrate where and when cells undergo ferroptosis in AD brain and build more translatable AD models for identifying anti-ferroptotic agents able to slow down neurodegeneration.
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Affiliation(s)
- Nad'a Majerníková
- Research School of Behavioural and Cognitive Neuroscience, University of Groningen, Groningen, Netherlands.,Department of Pathology and Medical Biology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands.,Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, Netherlands
| | - Wilfred F A den Dunnen
- Department of Pathology and Medical Biology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands.,Research Institute Brain and Cognition, Molecular Neuroscience and Aging Research (MOLAR), University Medical Centre Groningen, Groningen, Netherlands
| | - Amalia M Dolga
- Research School of Behavioural and Cognitive Neuroscience, University of Groningen, Groningen, Netherlands.,Department of Molecular Pharmacology, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, Netherlands
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13
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Ingo GM, Riccucci C, Pisani G, Pascucci M, D'Ercole D, Guerriero E, Boccaccini F, Falso G, Zambonini G, Paolini V, Di Carlo G. The vehicle braking systems as main source of inhalable airborne magnetite particles in trafficked areas. ENVIRONMENT INTERNATIONAL 2022; 158:106991. [PMID: 34991252 DOI: 10.1016/j.envint.2021.106991] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Magnetite (Fe3O4) nano-particles (MNPs) have been found in human tissues and causally linked to serious illnesses. The possible negative role of MNPs has been not still fully ascertained even though MNPs might cause health effects due to their magnetic property, redox activity and surface charge. The origin of MNPs in human tissues still remains to be unambiguously identified since biological processes, natural phenomena and anthropogenic production have been proposed. According to this latter increasingly convincing hypothesis, anthropogenic MNPs might enter mainly in the human body via inhalation, penetrate deeply into the lungs and in the alveoli and also migrate into the blood circulation and gather in the extrapulmonary organs and central nervous system. In order to identify the releasing source of the potentially inhalable MNPs, we pioneered an innovative approach to rapidly investigate elemental profile and morphology of a large number of airborne micron and sub-micron-sized Fe-bearing particles (FePs). The study was performed by collecting a large amount of micron and sub-micron sized inhalable airborne FePs in trafficked and densely frequented areas of Rome (Italy). Then, we have investigated individually the elemental profile and morphology of the collected particles by means of high-spatial resolution scanning electron microscopy, energy dispersive spectroscopy and an automated software purposely developed for the metal-bearing particles analysis. On the basis of specific elemental tracing features, the investigation reveals that almost the total amount of the airborne FePs is released by the vehicle braking systems mainly in the form of magnetite. Furthermore, we point out that our approach might be more generally used to identify the releasing sources of different inorganic airborne particles and to contribute to establish more accurately the impact of specific natural or anthropogenic particles on the environment and human health.
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Affiliation(s)
- Gabriel M Ingo
- Institute for the Study of Nanostructured Materials, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy.
| | - Cristina Riccucci
- Institute for the Study of Nanostructured Materials, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy
| | - Gianluca Pisani
- Central Anticrime Directorate of the Italian National Police, Forensic Science Police Service, via Tuscolana 1548, 00173 Rome, Italy
| | - Marianna Pascucci
- Institute for the Study of Nanostructured Materials, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy
| | - Daniele D'Ercole
- Central Anticrime Directorate of the Italian National Police, Forensic Science Police Service, via Tuscolana 1548, 00173 Rome, Italy
| | - Ettore Guerriero
- Institute of Atmospheric Pollution Research, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy
| | - Francesca Boccaccini
- Institute for the Study of Nanostructured Materials, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy; University of Rome "Sapienza", p.le Aldo Moro 5, 00185 Rome, Italy
| | - Giacomo Falso
- Central Anticrime Directorate of the Italian National Police, Forensic Science Police Service, via Tuscolana 1548, 00173 Rome, Italy
| | - Gianpaolo Zambonini
- Central Anticrime Directorate of the Italian National Police, Forensic Science Police Service, via Tuscolana 1548, 00173 Rome, Italy
| | - Valerio Paolini
- Institute of Atmospheric Pollution Research, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy
| | - Gabriella Di Carlo
- Institute for the Study of Nanostructured Materials, National Research Council, Rome 1 Research Area, via Salaria km 29.3, 00016 Monterotondo, Rome, Italy
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14
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Gonet T, Maher BA, Nyirő-Kósa I, Pósfai M, Vaculík M, Kukutschová J. Size-resolved, quantitative evaluation of the magnetic mineralogy of airborne brake-wear particulate emissions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117808. [PMID: 34329055 DOI: 10.1016/j.envpol.2021.117808] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 05/24/2023]
Abstract
Exposure to particulate air pollution has been associated with a variety of respiratory, cardiovascular and neurological problems, resulting in increased morbidity and mortality worldwide. Brake-wear emissions are one of the major sources of metal-rich airborne particulate pollution in roadside environments. Of potentially bioreactive metals, Fe (especially in its ferrous form, Fe2+) might play a specific role in both neurological and cardiovascular impairments. Here, we collected brake-wear particulate emissions using a full-scale brake dynamometer, and used a combination of magnetic measurements and electron microscopy to make quantitative evaluation of the magnetic composition and particle size of airborne emissions originating from passenger car brake systems. Our results show that the concentrations of Fe-rich magnetic grains in airborne brake-wear emissions are very high (i.e., ~100-10,000 × higher), compared to other types of particulate pollutants produced in most urban environments. From magnetic component analysis, the average magnetite mass concentration in total PM10 of brake emissions is ~20.2 wt% and metallic Fe ~1.6 wt%. Most brake-wear airborne particles (>99 % of particle number concentration) are smaller than 200 nm. Using low-temperature magnetic measurements, we observed a strong superparamagnetic signal (indicative of ultrafine magnetic particles, < ~30 nm) for all of the analysed size fractions of airborne brake-wear particles. Transmission electron microscopy independently shows that even the larger size fractions of airborne brake-wear emissions dominantly comprise agglomerates of ultrafine (<100 nm) particles (UFPs). Such UFPs likely pose a threat to neuronal and cardiovascular health after inhalation and/or ingestion. The observed abundance of ultrafine magnetite particles (estimated to constitute ~7.6 wt% of PM0.2) might be especially hazardous to the brain, contributing both to microglial inflammatory action and excess generation of reactive oxygen species.
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Affiliation(s)
- Tomasz Gonet
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom.
| | - Barbara A Maher
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom
| | - Ilona Nyirő-Kósa
- MTA-PE Air Chemistry Research Group, 10 Egyetem Street, H-8200, Veszprém, Hungary
| | - Mihály Pósfai
- Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprém, H8200, Hungary
| | - Miroslav Vaculík
- Nanotechnology Centre, VSB-Technical University of Ostrava, 708 00, Ostrava-Poruba, Czech Republic; Centre for Advanced Innovative Technologies, VSB-Technical University of Ostrava, 708 00, Ostrava-Poruba, Czech Republic
| | - Jana Kukutschová
- Centre for Advanced Innovative Technologies, VSB-Technical University of Ostrava, 708 00, Ostrava-Poruba, Czech Republic; Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 708 00, Ostrava, Czech Republic
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15
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Seo SJ, Chang WS, Jeon JG, Choi Y, Kim E, Kim JK. Proton Stimulation Targeting Plaque Magnetite Reduces Amyloid-β Plaque and Iron Redox Toxicity and Improves Memory in an Alzheimer's Disease Mouse Model. J Alzheimers Dis 2021; 84:377-392. [PMID: 34569962 DOI: 10.3233/jad-210739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The coexistence of magnetite within protein aggregates in the brain is a typical pathologic feature of Alzheimer's disease (AD), and the formation of amyloid-β (Aβ) plaques induces critical impairment of cognitive function. OBJECTIVE This study aimed to investigate the therapeutic effect of proton stimulation (PS) targeting plaque magnetite in the transgenic AD mouse brain. METHODS A proton transmission beam was applied to the whole mouse brain at a single entrance dose of 2 or 4 Gy to test the effect of disruption of magnetite-containing Aβ plaques by electron emission from magnetite. The reduction in Aβ plaque burden and the cognitive function of the PS-treated mouse group were assayed by histochemical analysis and memory tests, respectively. Aβ-magnetite and Aβ fibrils were treated with PS to investigate the breakdown of the amyloid protein matrix. RESULTS Single PS induced a 48-87%reduction in both the amyloid plaque burden and ferrous-containing magnetite level in the early-onset AD mouse brain while saving normal tissue. The overall Aβ plaque burden (68-82%) and (94-97%) hippocampal magnetite levels were reduced in late onset AD mice that showed improvements in cognitive function after PS compared with untreated AD mice (p < 0.001). Analysis of amyloid fibrils after exposure to a single 2 or 4 Gy proton transmission beam demonstrated that the protein matrix was broken down only in magnetite-associated Aβ fibrils. CONCLUSION Single PS targeting plaque magnetite effectively decreases the amyloid plaque burden and the ferrous-containing magnetite level, and this effect is useful for memory recovery.
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Affiliation(s)
- Seung-Jun Seo
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu, Korea
| | - Won-Seok Chang
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu, Korea
| | - Jae-Geun Jeon
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu, Korea
| | - Younshick Choi
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu, Korea
| | - EunHo Kim
- Department of Biochemistry, School of Medicine, Daegu Catholic University, Daegu, Korea
| | - Jong-Ki Kim
- Department of Biomedical Engineering & Radiology, School of Medicine, Daegu Catholic University, Daegu, Korea
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16
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Redox Homeostasis and Prospects for Therapeutic Targeting in Neurodegenerative Disorders. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9971885. [PMID: 34394839 PMCID: PMC8355971 DOI: 10.1155/2021/9971885] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/27/2021] [Accepted: 07/20/2021] [Indexed: 12/14/2022]
Abstract
Reactive species, such as those of oxygen, nitrogen, and sulfur, are considered part of normal cellular metabolism and play significant roles that can impact several signaling processes in ways that lead to either cellular sustenance, protection, or damage. Cellular redox processes involve a balance in the production of reactive species (RS) and their removal because redox imbalance may facilitate oxidative damage. Physiologically, redox homeostasis is essential for the maintenance of many cellular processes. RS may serve as signaling molecules or cause oxidative cellular damage depending on the delicate equilibrium between RS production and their efficient removal through the use of enzymatic or nonenzymatic cellular mechanisms. Moreover, accumulating evidence suggests that redox imbalance plays a significant role in the progression of several neurodegenerative diseases. For example, studies have shown that redox imbalance in the brain mediates neurodegeneration and alters normal cytoprotective responses to stress. Therefore, this review describes redox homeostasis in neurodegenerative diseases with a focus on Alzheimer's and Parkinson's disease. A clearer understanding of the redox-regulated processes in neurodegenerative disorders may afford opportunities for newer therapeutic strategies.
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17
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Gao Y, Li J, Wu Q, Wang S, Yang S, Li X, Chen N, Li L, Zhang L. Tetrahydroxy stilbene glycoside ameliorates Alzheimer's disease in APP/PS1 mice via glutathione peroxidase related ferroptosis. Int Immunopharmacol 2021; 99:108002. [PMID: 34333354 DOI: 10.1016/j.intimp.2021.108002] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/11/2021] [Accepted: 07/18/2021] [Indexed: 02/08/2023]
Abstract
Amyloid beta peptide (Aβ) has been confirmed to be an essential reason of Alzheimer's disease (AD) for a long time. Ferroptosis is a newly recognized oxidative cell death mechanism, which is highly related to AD. Recently, tetrahydroxy stilbene glycoside (TSG) has been beneficial in alleviating learning and memory of AD and aged mouse model. Unfortunately, the underlying mechanisms between TSG and ferroptosis in AD are poorly understood. Herein, we investigated whether neural cells in cerebral cortex and hippocampus that were seriously afflicted in APP/PS1 mice might be vulnerable to ferroptosis. Treatment with non-toxic TSG dose-dependently resisted Aβ-caused cytotoxic death in neuronal cells by regulating ferroptosis related proteins and enzymes in APP/PS1 mice. TSG also alleviated cellular oxidative stress and inflammatory damage in response to Aβ by attenuating the levels of oxidation products. Importantly, TSG administration abrogated Aβ-caused brain damage, indicating that TSG rescued brain cells. Subsequently, TSG promoted the activation of GSH/GPX4/ROS and Keap1/Nrf2/ARE signaling pathways. Notably, markers related to ferroptosis including increased lipid peroxidation, enhanced neuroinflammation such as NLRP3, and also the expression of DMT1, ACSL4 and NCOA4, were reduced by TSG administration. In addition, TSG enhanced antioxidative stress via the upregulation of SOD, and the expression of FTH1, CD98 and xCT. Taken together, our data indicated a novel mechanism of TSG in reversing Aβ-caused injury through restoring mitochondrial function via several signaling pathways, implying a promising candidate against neurodegenerative diseases especially AD. Hence, TSG should be taken into consideration during treatment of AD in the future.
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Affiliation(s)
- Yan Gao
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nervous System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China; State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Yantai University, Yantai 264005, China
| | - Juntong Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Qinglin Wu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Shasha Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Songwei Yang
- College of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Xun Li
- College of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Naihong Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510405, China; College of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
| | - Lin Li
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nervous System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China
| | - Lan Zhang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, National Clinical Research Center for Geriatric Diseases, Beijing Engineering Research Center for Nervous System Drugs, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing 100053, China.
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18
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Vitalakumar D, Sharma A, Flora SJS. Ferroptosis: A potential therapeutic target for neurodegenerative diseases. J Biochem Mol Toxicol 2021; 35:e22830. [PMID: 34047408 DOI: 10.1002/jbt.22830] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/25/2021] [Accepted: 05/18/2021] [Indexed: 12/23/2022]
Abstract
Ferroptosis is a newly identified regulated form of cell death, which is thought to play a major role in neurodegenerative diseases. In this review, we discuss recent studies elucidating the molecular mechanisms involved in the regulation and execution of ferroptotic cell death and also its role in the brain. Ferroptosis is regulated mainly via iron homeostasis, glutathione metabolism, and lipid peroxidation. Ferroptotic cell death and pro-ferroptotic factors are correlated with the etiopathogenesis of Parkinson's disease (PD) and Alzheimer's disease (AD). Ferroptosis and etiological factors act synergistically in PD and AD pathogenesis. Furthermore, several preclinical and clinical studies targeting ferroptosis in PD and AD have also shown positive results. Evidence of ferroptosis in the brain thus gives new insights into understanding neurodegenerative diseases. Ferroptosis studies in the brain are still in their infancy, but the existing pieces of evidence suggest a strong correlation between ferroptotic cell death and neurodegenerative diseases. Thus, ferroptosis might be a promising target for treating neurodegenerative diseases.
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Affiliation(s)
- D Vitalakumar
- Department of Biotechnology, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
| | - Ankita Sharma
- Department of Biotechnology, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
| | - Swaran J S Flora
- Department of Biotechnology, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, India
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19
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Maher BA, Gonet T. Prolific shedding of magnetite nanoparticles from banknote surfaces. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:144490. [PMID: 33454475 DOI: 10.1016/j.scitotenv.2020.144490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/01/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Here, we use magnetic methods first to quantify the content of strongly magnetic particles of banknotes (US dollars, USD, and British pounds sterling, GBP), and then examine the possibility of their release from handled banknote surfaces. The content of magnetic particles, from magnetic remanence measurements, for the USD and paper GBP banknotes is high; greater, for example, than that in vehicle engine-exhaust emissions, and similar to that for airborne roadside particulate matter (PM). Our magnetic analyses of USD and GBP banknotes, and of the ink pigment widely used in their printing, reveal not only that the banknotes are highly magnetic, but also that strongly magnetic, nano-sized particles are readily and prolifically shed from their surfaces (especially from the USD banknotes). A common practice, prior to increased automation, was for bank tellers to count banknotes by licking a finger to adhere to each successive counted note, and thus speed up the manual counting process. Given the rate of particle shedding reported here, this traditional manual counting procedure must have resulted in prolific transfer of iron-rich nanoparticles both to the fingers and thence to the tongue. We hypothesise that, pre-automation, magnetite and other metal-bearing nanoparticles were repetitively and frequently ingested by bank tellers, and subsequently entered the brain directly via the taste nerve pathway, and/or indirectly via the systemic circulation and the neuroenteric system. This hypothesis may plausibly account for the reported and currently unexplained association between elevated neurodegeneration-related mortality odds ratios and this specific occupation.
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Affiliation(s)
- Barbara A Maher
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Tomasz Gonet
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
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20
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Zhang G, Zhang Y, Shen Y, Wang Y, Zhao M, Sun L. The Potential Role of Ferroptosis in Alzheimer's Disease. J Alzheimers Dis 2021; 80:907-925. [PMID: 33646161 DOI: 10.3233/jad-201369] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent cause of dementia, accounting for approximately 60%-80%of all cases. Although much effort has been made over the years, the precise mechanism of AD has not been completely elucidated. Recently, great attention has shifted to the roles of iron metabolism, lipid peroxidation, and oxidative stress in AD pathogenesis. We also note that these pathological events are the vital regulators of a novel regulatory cell death, termed ferroptosis-an iron-dependent, oxidative, non-apoptotic cell death. Ferroptosis differs from apoptosis, necrosis, and autophagy with respect to morphology, biochemistry, and genetics. Mounting evidence suggests that ferroptosis may be involved in neurological disorders, including AD. Here, we review the underlying mechanisms of ferroptosis; discuss the potential interaction between AD and ferroptosis in terms of iron metabolism, lipid peroxidation, and the glutathione/glutathione peroxidase 4 axis; and describe some associated studies that have explored the implication of ferroptosis in AD.
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Affiliation(s)
- Guimei Zhang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Yaru Zhang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China.,Department of Neurology and Institute of Neurology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yanxin Shen
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Yongchun Wang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Meng Zhao
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Li Sun
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Jilin University, Changchun, China
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21
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Gonet T, Maher BA, Kukutschová J. Source apportionment of magnetite particles in roadside airborne particulate matter. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 752:141828. [PMID: 32889272 DOI: 10.1016/j.scitotenv.2020.141828] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/12/2020] [Accepted: 08/18/2020] [Indexed: 05/24/2023]
Abstract
Exposure to airborne particulate matter (PM) is associated with pulmonary, cardiovascular and neurological problems. Magnetite, a mixed Fe2+/Fe3+ oxide, is ubiquitous and abundant in PM in urban environments, and might play a specific role in both neurodegeneration and cardiovascular disease. We collected samples of vehicle exhaust emissions, and of heavily-trafficked roadside and urban background dusts from Lancaster and Birmingham, U.K. Then, we measured their saturation magnetic remanence and used magnetic component analysis to separate the magnetite signal from other contributing magnetic components. Lastly, we estimated the contributions made by specific traffic-related sources of magnetite to the total airborne magnetite in the roadside environment. The concentration of magnetite in exhaust emissions is much lower (3-14 x lower) than that in heavily- trafficked roadside PM. The magnetite concentration in petrol-engine exhaust emissions is between ~0.06 and 0.12 wt%; in diesel-engine exhaust emissions ~0.08-0.18 wt%; in background dust ~0.05-0.20 wt% and in roadside dust ~0.18-0.95 wt%. Here, we show that vehicle brake wear is responsible for between ~68 and 85% of the total airborne magnetite at the two U.K. roadside sites. In comparison, diesel-engine exhaust emissions account for ~7% - 12%, petrol-engine exhaust emissions for ~2% - 4%, and background dust for 6% - 10%. Thus, vehicle brake wear is by far the most dominant source of airborne magnetite in the roadside environment at the two sites examined. Given the potential risk posed, post-inhalation, by ultrafine magnetite and co-associated transition metal-rich particles to human cardiovascular and neurological health, the high magnetite content of vehicle brake wear might need to be reduced in order to mitigate such risk, especially for vulnerable population groups.
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Affiliation(s)
- Tomasz Gonet
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
| | - Barbara A Maher
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Jana Kukutschová
- Nanotechnology Centre, VŜB-Technical University of Ostrava, 708 33, Ostrava, Poruba, Czech Republic; Regional Materials Science and Technology Centre, VŜB-Technical University of Ostrava, 708 33, Ostrava, Poruba, Czech Republic
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22
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Kim SW, Kim Y, Kim SE, An JY. Ferroptosis-Related Genes in Neurodevelopment and Central Nervous System. BIOLOGY 2021; 10:35. [PMID: 33419148 PMCID: PMC7825574 DOI: 10.3390/biology10010035] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 02/07/2023]
Abstract
Ferroptosis, first introduced as a new form of regulated cell death induced by erastin, is accompanied by the accumulation of iron and lipid peroxides, thus it can be inhibited either by iron chelators or by lipophilic antioxidants. In the past decade, multiple studies have introduced the potential importance of ferroptosis in many human diseases, including cancer and neurodegenerative diseases. In this review, we will discuss the genetic association of ferroptosis with neurological disorders and development of the central nervous system.
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Affiliation(s)
- Soo-Whee Kim
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea; (S.-W.K.); (Y.K.)
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea
| | - Yujin Kim
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea; (S.-W.K.); (Y.K.)
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea
| | - Sung Eun Kim
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea; (S.-W.K.); (Y.K.)
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea
| | - Joon-Yong An
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea; (S.-W.K.); (Y.K.)
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul 02841, Korea
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23
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Everett J, Brooks J, Collingwood JF, Telling ND. Nanoscale chemical speciation of β-amyloid/iron aggregates using soft X-ray spectromicroscopy. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01304h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanoscale resolution X-ray spectromicroscopy shows the co-incubation of β-amyloid (Aβ) and iron(iii) to result in aggregate structures displaying nanoscale heterogeneity in Aβ and iron chemistry, including the formation of potentially cytotoxic Fe0.
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Affiliation(s)
- James Everett
- School of Pharmacy and Bioengineering
- Guy Hilton Research Centre
- Thornburrow Drive
- Keele University
- Staffordshire
| | - Jake Brooks
- School of Engineering
- Library Road
- University of Warwick
- Coventry
- UK
| | | | - Neil D. Telling
- School of Pharmacy and Bioengineering
- Guy Hilton Research Centre
- Thornburrow Drive
- Keele University
- Staffordshire
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24
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Maher BA, O'Sullivan V, Feeney J, Gonet T, Anne Kenny R. Indoor particulate air pollution from open fires and the cognitive function of older people. ENVIRONMENTAL RESEARCH 2021; 192:110298. [PMID: 33039528 DOI: 10.1016/j.envres.2020.110298] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/22/2020] [Accepted: 09/24/2020] [Indexed: 05/24/2023]
Abstract
Exposure to indoor air pollution is known to affect respiratory and cardiovascular health, but little is known about its effects on cognitive function. We measured the concentrations and magnetite content of airborne particulate matter (PM) in the indoor environment arising from burning peat, wood or coal in residential open fires. Highest indoor PM2.5 concentrations (60 μg/m3 i.e. 2.4 times the WHO-recommended 24-h mean) occurred when peat was burned, followed by burning of coal (30 μg/m3) and wood (17 μg/m3). Conversely, highest concentrations of coarser PM (PM10-2.5) were associated with coal burning (20 μg/m3), with lower concentrations emitted during burning of wood (10 μg/m3) and peat (8 μg/m3). The magnetic content of the emitted PM, greatest (for both PM size fractions) when coal was burned, is similar to that of roadside airborne PM. Exposure to PM, and to strongly magnetic airborne PM, can be greater for individuals spending ~5 h/day indoors with a coal-burning open fire for 6 months/year compared to those commuting via heavily-trafficked roads for 1 h/day for 12 months/year. Given these high indoor PM and magnetite concentrations, and the reported associations between (outdoor) PM and impaired neurological health, we used individual-level data from The Irish Longitudinal Study on Ageing (TILDA) to examine the association between the usage of open fires and the cognitive function of older people. Using a sample of nearly seven thousand older people, we estimated multi-variate models of the association between cognitive function and open fire usage, in order to account for relevant confounders such as socio-economic status. We found a negative association between open fire usage and cognitive function as measured by widely-used cognitive tests such as word recall and verbal fluency tests. The negative association was largest and statistically strongest among women, a finding explained by the greater exposure of women to open fires in the home because they spent more time at home than men. Our findings were also robust to stratifying the sample between old and young, rich and poor, and urban and rural.
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Affiliation(s)
- Barbara A Maher
- Lancaster Environment Centre, Lancaster University, Farrer Avenue, Lancaster, LA1 4YQ, UK
| | - Vincent O'Sullivan
- Department of Economics, Lancaster University Management School, Lancaster University, LA1 4YX, UK.
| | - Joanne Feeney
- The Irish Longitudinal Study on Ageing (TILDA), Trinity College Dublin, Ireland
| | - Tomasz Gonet
- Lancaster Environment Centre, Lancaster University, Farrer Avenue, Lancaster, LA1 4YQ, UK
| | - Rose Anne Kenny
- The Irish Longitudinal Study on Ageing (TILDA), Trinity College Dublin, Ireland
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25
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Calderón-Garcidueñas L, González-Maciel A, Reynoso-Robles R, Hammond J, Kulesza R, Lachmann I, Torres-Jardón R, Mukherjee PS, Maher BA. Quadruple abnormal protein aggregates in brainstem pathology and exogenous metal-rich magnetic nanoparticles (and engineered Ti-rich nanorods). The substantia nigrae is a very early target in young urbanites and the gastrointestinal tract a key brainstem portal. ENVIRONMENTAL RESEARCH 2020; 191:110139. [PMID: 32888951 DOI: 10.1016/j.envres.2020.110139] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/21/2020] [Accepted: 08/22/2020] [Indexed: 06/11/2023]
Abstract
Fine particulate air pollution (PM2.5) exposures are linked with Alzheimer's and Parkinson's diseases (AD,PD). AD and PD neuropathological hallmarks are documented in children and young adults exposed lifelong to Metropolitan Mexico City air pollution; together with high frontal metal concentrations (especially iron)-rich nanoparticles (NP), matching air pollution combustion- and friction-derived particles. Here, we identify aberrant hyperphosphorylated tau, ɑ synuclein and TDP-43 in the brainstem of 186 Mexico City 27.29 ± 11.8y old residents. Critically, substantia nigrae (SN) pathology seen in mitochondria, endoplasmic reticulum and neuromelanin (NM) is co-associated with the abundant presence of exogenous, Fe-, Al- and Ti-rich NPs.The SN exhibits early and progressive neurovascular unit damage and mitochondria and NM are associated with metal-rich NPs including exogenous engineered Ti-rich nanorods, also identified in neuroenteric neurons. Such reactive, cytotoxic and magnetic NPs may act as catalysts for reactive oxygen species formation, altered cell signaling, and protein misfolding, aggregation and fibril formation. Hence, pervasive, airborne and environmental, metal-rich and magnetic nanoparticles may be a common denominator for quadruple misfolded protein neurodegenerative pathologies affecting urbanites from earliest childhood. The substantia nigrae is a very early target and the gastrointestinal tract (and the neuroenteric system) key brainstem portals. The ultimate neural damage and neuropathology (Alzheimer's, Parkinson's and TDP-43 pathology included) could depend on NP characteristics and the differential access and targets achieved via their portals of entry. Thus where you live, what air pollutants you are exposed to, what you are inhaling and swallowing from the air you breathe,what you eat, how you travel, and your occupational longlife history are key. Control of NP sources becomes critical.
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Affiliation(s)
| | | | | | - Jessica Hammond
- Centre for Environmental Magnetism and Paleomagnetism, Lancaster Environment Centre, University of Lancaster, Lancaster, LA1 4YQ, UK
| | - Randy Kulesza
- Auditory Research Center, Lake Erie College of Osteopathic Medicine, Erie, PA, USA
| | | | - Ricardo Torres-Jardón
- Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, UNAM, Mexico City, 04510, Mexico
| | | | - Barbara A Maher
- Centre for Environmental Magnetism and Paleomagnetism, Lancaster Environment Centre, University of Lancaster, Lancaster, LA1 4YQ, UK
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Zhang X, Gou YJ, Zhang Y, Li J, Han K, Xu Y, Li H, You LH, Yu P, Chang YZ, Gao G. Hepcidin overexpression in astrocytes alters brain iron metabolism and protects against amyloid-β induced brain damage in mice. Cell Death Discov 2020; 6:113. [PMID: 33298837 PMCID: PMC7603348 DOI: 10.1038/s41420-020-00346-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/12/2020] [Indexed: 12/21/2022] Open
Abstract
Progressive iron accumulation in the brain and iron-induced oxidative stress are considered to be one of the initial causes of Alzheimer’s disease (AD), and modulation of brain iron level shows promise for its treatment. Hepcidin expressed by astrocytes has been speculated to regulate iron transport across the blood–brain barrier (BBB) and control the whole brain iron load. Whether increasing the expression of astrocyte hepcidin can reduce brain iron level and relieve AD symptoms has yet to be studied. Here, we overexpressed hepcidin in astrocytes of the mouse brain and challenged the mice with amyloid-β25–35 (Aβ25–35) by intracerebroventricular injection. Our results revealed that hepcidin overexpression in astrocytes significantly ameliorated Aβ25–35-induced cell damage in both the cerebral cortex and hippocampus. This protective role was also attested by behavioral tests of the mice. Our data further demonstrated that astrocyte-overexpressed hepcidin could decrease brain iron level, possibly by acting on ferroportin 1 (FPN1) on the brain microvascular endothelial cells (BMVECs), which in turn reduced Aβ25–35-induced oxidative stress and apoptosis, and ultimately protected cells from damage. This study provided in vivo evidences of the important role of astrocyte hepcidin in the regulation of brain iron metabolism and protection against Aβ-induced cortical and hippocampal damages and implied its potential in the treatment of oxidative stress-related brain disorders.
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Affiliation(s)
- Xinwei Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Yu-Jing Gou
- Chengde Medical University, Shuang Qiao District, An Yuan Road, 067000, Chengde, China
| | - Yating Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Jie Li
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Kang Han
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Yong Xu
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Haiyan Li
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China.,Chengde Medical University, Shuang Qiao District, An Yuan Road, 067000, Chengde, China
| | - Lin-Hao You
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Peng Yu
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China
| | - Yan-Zhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China.
| | - Guofen Gao
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, 050024, Shijiazhuang, China.
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Xu Y, Zhang Y, Zhang JH, Han K, Zhang X, Bai X, You LH, Yu P, Shi Z, Chang YZ, Gao G. Astrocyte hepcidin ameliorates neuronal loss through attenuating brain iron deposition and oxidative stress in APP/PS1 mice. Free Radic Biol Med 2020; 158:84-95. [PMID: 32707154 DOI: 10.1016/j.freeradbiomed.2020.07.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/24/2020] [Accepted: 07/08/2020] [Indexed: 02/08/2023]
Abstract
Iron overload in the brain and iron-induced oxidative damage have been considered to play key roles in the pathogenesis of Alzheimer's disease (AD). Hepcidin is a peptide that regulates systemic iron metabolism by interacting with iron exporter ferroportin 1 (FPN1). Studies have indicated that the astrocyte hepcidin could regulate brain iron intake at the blood-brain barrier and injection of hepcidin into brain attenuated iron deposition in the brain. However, whether overexpression of hepcidin in astrocytes of APP/PS1 transgenic mice can alleviate AD symptoms by reducing iron deposition has not been evaluated. In this study, we overexpressed hepcidin in astrocytes of APP/PS1 mice and investigated its effects on β-amyloid (Aβ) aggregation, neuronal loss, iron deposition and iron-induced oxidative damages. Our results showed that the elevated expression of astrocyte hepcidin in APP/PS1 mice significantly improved their cognitive decline, and partially alleviated the formation of Aβ plaques in cortex and hippocampus. Further investigations revealed that overexpression of hepcidin in astrocytes significantly reduced iron levels in cortex and hippocampus of APP/PS1 mice, especially iron content in neurons, which led to the reduction of iron accumulation-induced oxidative stress and neuroinflammation, and finally decreased neuronal cell death in the cortex and hippocampus of APP/PS1 mice. This study demonstrated that overexpression of hepcidin in astrocytes of APP/PS1 mice could partially alleviate AD symptoms and delay the pathological process of AD.
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Affiliation(s)
- Yong Xu
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Yating Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Jian-Hua Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Kang Han
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Xinwei Zhang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Xue Bai
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Lin-Hao You
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Peng Yu
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China
| | - Yan-Zhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China.
| | - Guofen Gao
- Laboratory of Molecular Iron Metabolism, College of Life Sciences, Hebei Normal University, No. 20, Nan Er Huan East Road, Shijiazhuang, 050024, China.
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28
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Andreev A, Erdinc B, Shivaraj K, Schmutz J, Levochkina O, Bhowmik D, Farag F, Money KM, Primavera LH, Gotlieb V, Sahni S. The Association Between Anemia of Chronic Inflammation and Alzheimer's Disease and Related Dementias. J Alzheimers Dis Rep 2020; 4:379-391. [PMID: 33163899 PMCID: PMC7592836 DOI: 10.3233/adr-200178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Dementia is a spectrum of neurological diseases characterized by memory impairment and cognitive decline with the pathogenesis and effective management remaining elusive. Several studies have identified a correlation between anemia and Alzheimer's disease and related dementias (ADRD); however, anemia subtypes and association with ADRD have yet to be studied conclusively. Objective To study an association between ADRD and anemia of chronic inflammation. Methods We conducted a retrospective case-control study of the patients, diagnosed with ADRD at Brookdale Hospital. Pair-wise comparisons between means of controls and cases in terms of iron studies and laboratory results were performed using a Mann-Whitney U test. Pair-wise comparisons between anemia subgroups (moderate and severe) were performed using a Two Sample proportion Z-Test, where for each couple of normally distributed population. Results There was a total of 4,517 (1,274 ADRD group; 3,243 Control group) patients. There was significant difference in hemoglobin 10.15 versus 11.04 [p-value <0.001]. Iron studies showed a significant difference in ferritin 395±488.18 versus 263±1023.4 [p < 0.001], total iron binding capacity 225±84.08 versus 266±82.30 [p < 0.001] and serum iron level 64±39.34 versus 53±41.83 [p < 0.001]. Folic acid and vitamin B12 levels were normal in both groups. Severe and moderate anemia in the ADRD group were respectively 6.2% [95% CI: 4.2-8.4] and 13% [95% CI: 9.8-16.2] higher. Overall, incidence of moderate-to-severe anemia was found to be 19% higher in ADRD group [95% CI: 15.8-22.1]. Conclusion We demonstrated an association between ADRD and anemia of chronic inflammation independent of age, renal function, and HgbA1C levels.
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Affiliation(s)
- Alexander Andreev
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA.,Beth Israel Deaconess Medical Center, Department of Neurology, Boston, MA, USA
| | - Burak Erdinc
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA
| | - Kiran Shivaraj
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA
| | - Julia Schmutz
- Ross University School of Medicine, Miramar, FL, USA
| | - Olga Levochkina
- Richmond University Medical Center, Department of Psychiatry, Staten Island, NY, USA
| | - Dhrity Bhowmik
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA
| | - Fady Farag
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA
| | - Kelli M Money
- Beth Israel Deaconess Medical Center, Department of Neurology, Boston, MA, USA
| | | | - Vladimir Gotlieb
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Division of Hematology & Oncology, Brooklyn, NY, USA
| | - Sonu Sahni
- Brookdale University Hospital Medical Center, Department of Internal Medicine, Brooklyn, NY, USA.,Department of Primary Care, Touro College of Osteopathic Medicine, New York, NY, USA.,Department of Research Medicine, NYIT College of Osteopathic Medicine, Glen Head, NY, USA
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29
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Long X, Luo YH, Zhang Z, Zheng C, Zeng C, Bi Y, Zhou C, Rittmann BE, Waite TD, Herckes P, Westerhoff P. The Nature and Oxidative Reactivity of Urban Magnetic Nanoparticle Dust Provide New Insights into Potential Neurotoxicity Studies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:10599-10609. [PMID: 32786591 DOI: 10.1021/acs.est.0c01962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The recent discovery of magnetic nanoparticles (NPs) in human brain tissue has raised concerns regarding their source and neurotoxicity. As previous studies have suggested that magnetite in urban dust may be the source, we collected urban magnetic dust and thoroughly characterized the nature of ambient urban magnetic dust particles prior to investigating their neurotoxic potential. In addition to magnetite, magnetic dust contained an abundance (∼40%) of elemental iron (Fe0). The coexistence of magnetite and elemental iron was found in magnetic dust particles of inhalable (<10 μm) and nanoscale (<200 nm) size ranges with these particles small enough to enter the human brain via the respiratory tract and olfactory bulbs. The magnetic dust also contained nonferrous water-soluble metals (particularly Cu) that can induce formation of reactive oxygen species (ROS). Previous studies used engineered pure-magnetite for in vitro ROS studies. However, while magnetite was present in all magnetic dust particles collected, engineered pure-magnetite was relatively unreactive and contributed minimally to the generation of ROS. We fill a critical knowledge gap between exposure to heterogeneous ambient iron-particles and in vitro experiments with engineered versus ambient, incidental iron-bearing nanoscale minerals. Our work points to the need to further investigate the presence and properties of magnetic NPs in respirable dust with respect to their potential role in neurodegeneration.
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Affiliation(s)
- Xiangxing Long
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Yi-Hao Luo
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Zhaobo Zhang
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Chenwei Zheng
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Chao Zeng
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States
| | - Yuqiang Bi
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States
| | - Chen Zhou
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - T David Waite
- Water Research Center, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Pierre Herckes
- School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Paul Westerhoff
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Arizona 85287-3005, United States
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30
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Everett J, Brooks J, Lermyte F, O'Connor PB, Sadler PJ, Dobson J, Collingwood JF, Telling ND. Iron stored in ferritin is chemically reduced in the presence of aggregating Aβ(1-42). Sci Rep 2020; 10:10332. [PMID: 32587293 PMCID: PMC7316746 DOI: 10.1038/s41598-020-67117-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 05/28/2020] [Indexed: 12/25/2022] Open
Abstract
Atypical low-oxidation-state iron phases in Alzheimer's disease (AD) pathology are implicated in disease pathogenesis, as they may promote elevated redox activity and convey toxicity. However, the origin of low-oxidation-state iron and the pathways responsible for its formation and evolution remain unresolved. Here we investigate the interaction of the AD peptide β-amyloid (Aβ) with the iron storage protein ferritin, to establish whether interactions between these two species are a potential source of low-oxidation-state iron in AD. Using X-ray spectromicroscopy and electron microscopy we found that the co-aggregation of Aβ and ferritin resulted in the conversion of ferritin's inert ferric core into more reactive low-oxidation-states. Such findings strongly implicate Aβ in the altered iron handling and increased oxidative stress observed in AD pathogenesis. These amyloid-associated iron phases have biomarker potential to assist with disease diagnosis and staging, and may act as targets for therapies designed to lower oxidative stress in AD tissue.
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Affiliation(s)
- James Everett
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent, Staffordshire, ST4 7QB, United Kingdom.
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom.
| | - Jake Brooks
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Frederik Lermyte
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Peter B O'Connor
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Jon Dobson
- J. Crayton Pruitt Family Department of Biomedical Engineering & Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, 32611, United States
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, 32611, United States
| | | | - Neil D Telling
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent, Staffordshire, ST4 7QB, United Kingdom
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31
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Bagheri F, Rashedi V. Simultaneous exposure to noise and carbon monoxide increases the risk of Alzheimer's disease: a literature review. Med Gas Res 2020; 10:85-90. [PMID: 32541134 PMCID: PMC7885712 DOI: 10.4103/2045-9912.285562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 02/18/2020] [Indexed: 02/06/2023] Open
Abstract
Dementia is a syndrome of cognitive and functional decline, commonly occurring in later life as a result of neurodegenerative and cerebrovascular processes beginning earlier in the life course. An excess of free radicals has an essential role in neurodegenerative diseases and aging. This paper aims to review the effects of noise and carbon monoxide as a risk factor in Alzheimer's disease as well as the role of free radicals in the progress of Alzheimer's disease. Articles included in this review were identified through a search of the databases PubMed, Scopus, and Google Scholar using the search terms Alzheimer's disease, dementia, noise, reactive oxygen species, and Carbon Monoxide. The literature search was restricted to the years 1982 to 2020 and articles published in the English language. The metabolism rate of the body is very high when exposed to noise and carbon monoxide; this leads to overproduction of reactive oxygen species and oxidative stress conditions. Oxidative stress has an essential role in the mechanisms concerned in Alzheimer's disease. In addition to the consequences of noise and a chemical substance on the auditory system, they also have non-auditory effects that affect the brain and induced neurodegenerative disease.
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Affiliation(s)
- Fereshteh Bagheri
- Department of Audiology, School of Rehabilitation Sciences, Babol University of Medical Sciences, Mazandaran, Iran
| | - Vahid Rashedi
- School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran
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Han C, Liu Y, Dai R, Ismail N, Su W, Li B. Ferroptosis and Its Potential Role in Human Diseases. Front Pharmacol 2020; 11:239. [PMID: 32256352 PMCID: PMC7090218 DOI: 10.3389/fphar.2020.00239] [Citation(s) in RCA: 166] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/21/2020] [Indexed: 12/26/2022] Open
Abstract
Ferroptosis is a novel regulated cell death pattern discovered when studying the mechanism of erastin-killing RAS mutant tumor cells in 2012. It is an iron-dependent programmed cell death pathway mainly caused by an increased redox imbalance but with distinct biological and morphology characteristics when compared to other known cell death patterns. Ferroptosis is associated with various diseases including acute kidney injury, cancer, and cardiovascular, neurodegenerative, and hepatic diseases. Moreover, activation or inhibition of ferroptosis using a variety of ferroptosis initiators and inhibitors can modulate disease progression in animal models. In this review, we provide a comprehensive analysis of the characteristics of ferroptosis, its initiators and inhibitors, and the potential role of its main metabolic pathways in the treatment and prevention of various diseased states. We end the review with the current knowledge gaps in this area to provide direction for future research on ferroptosis.
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Affiliation(s)
- Chu Han
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Yuanyuan Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
| | - Rongji Dai
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Nafissa Ismail
- Neuroimmunology, Stress and Endocrinology (NISE) Lab, School of Psychology, Faculty of Social Science, University of Ottawa, Ottawa, ON, Canada
- Brain and Mind Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Weijun Su
- School of Medicine, Nankai University, Tianjin, China
| | - Bo Li
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Life Science, Beijing Institute of Technology, Beijing, China
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33
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Nesfatin-1 Ameliorate Learning and Memory Deficit via Inhibiting Apoptosis and Neuroinflammation Following Ethanol-Induced Neurotoxicity in Early Postnatal Rats. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-019-09999-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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34
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Cai X, Zhang K, Xie X, Zhu X, Feng J, Jin Z, Zhang H, Tian M, Chen H. Self-assembly hollow manganese Prussian white nanocapsules attenuate Tau-related neuropathology and cognitive decline. Biomaterials 2019; 231:119678. [PMID: 31864019 DOI: 10.1016/j.biomaterials.2019.119678] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is a prevalent chronic neurodegenerative disease. However, to date, none of the developed drug candidates targeting at a single therapeutic target of AD have achieved success in clinical trials. Herein, we proposed a hypothesis of hollow manganese Prussian white nanocapsules (HMPWCs)-mediated attenuation of Tau-related pathology and alleviation of cognitive decline via simultaneously alleviating neuroinflammation, scavenging reactive oxygen species, and reducing hyperphosphorylated Tau proteins. The HMPWCs self-assemblied with manganese Prussian white analogue and bovine serum albumin via a novel biomimetic mineralization present good biocompatibility, variable valence states, and low oxidation-reduction potential. They own the outstanding capabilities of relieving oxidative stress, inhibiting Tau neuropathology, and counteracting neuroinflammation, which could be used to treat Tau-related AD-like neurodegeneration. Importantly, they can also attenuate the cognitive impairments of Tau-related AD-like rats without significant side effects. This research takes the advantages of catalytic chemistry, nanomedicine and specific neurodegenerative microenvironment together, providing an alternative efficient treatment strategy for Tau-related neurodegeneration diseases, such as AD, Pick's disease, frontotemporal dementia, Creutzfeldt-Jakob Disease and progressive supranuclear palsy.
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Affiliation(s)
- Xiaojun Cai
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China; Shanghai Institute of Ultrasound in Medicine, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, 200050, Shanghai, PR China
| | - Kai Zhang
- Department of Nuclear Medicine and PET-CT Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China
| | - Xue Xie
- Shanghai Institute of Ultrasound in Medicine, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, 200050, Shanghai, PR China
| | - Xiandi Zhu
- Department of Nuclear Medicine and PET-CT Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China
| | - Jin Feng
- Department of Nuclear Medicine and PET-CT Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China
| | - Zhiming Jin
- Jiangsu Huayi Technology Limited Company, Changshu, Jiangsu, 215522, PR China
| | - Hong Zhang
- Department of Nuclear Medicine and PET-CT Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China; Shanxi Medical University, Taiyuan, Shanxi, PR China; Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China; The College of Biomedical Engineering and Instrument Science of Zhejiang University, Hangzhou, China
| | - Mei Tian
- Department of Nuclear Medicine and PET-CT Center, The Second Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, PR China.
| | - Hangrong Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China.
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Ceylan H, Budak H, Kocpinar EF, Baltaci NG, Erdogan O. Examining the link between dose-dependent dietary iron intake and Alzheimer's disease through oxidative stress in the rat cortex. J Trace Elem Med Biol 2019; 56:198-206. [PMID: 31525623 DOI: 10.1016/j.jtemb.2019.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/01/2019] [Accepted: 09/08/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Neurodegenerative diseases such as Alzheimer's and Parkinson's disease are characterized by the progressive deterioration of the structure and function of the nervous system. A number of environmental risk factors including potentially toxic elements such as iron, lead to negative effects on many metabolic reactions as well as neuroprotection. The aim of this study is to reveal whether long-term iron overload is one of the underlying factors in the pathogenesis of Alzheimer's disease (AD). METHODS 15 young-adult male rats were randomly divided into 5 groups treated with iron through drinking water for 4 months. Following feeding, the iron content, reduced glutathione (GSH), and hydrogen peroxide (H2O2) levels of cortex tissues were measured. Specific enzyme activities were determined spectrophotometrically. mRNA expression profiles were measured using real-time PCR (qPCR). RESULTS Iron levels were elevated in case of non-toxic (0.87 and 3 μg/mL) iron administration. However, no changes were observed in toxic (30 and 300 μg/mL) iron administration. GSH and H2O2 levels altered with long-term iron overload. Glutathione peroxidase (GPx) enzyme activities significantly increased in all groups, while glutathione S-transferase (GST) activity increased only in case of 0.87 and 30 μg/mL iron administration. Expression levels of neuroprotective and AD-related genes were altered by 3 μg/mL iron overload in a dose-dependent manner. The expression and activity of acetylcholinesterase (AChE) were elevated at 3 μg/mL iron concentration. CONCLUSION The findings of the present study allow us to conclude that long-term dietary iron intake, especially at a dose of 3 μg/mL demonstrates negative effects on the rat cortex by provoking antioxidant metabolism and AD pathology in a dose-dependently.
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Affiliation(s)
- Hamid Ceylan
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey.
| | - Harun Budak
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey
| | - Enver Fehim Kocpinar
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey; Vocational School, Department of Medical Services and Techniques, Muş Alparslan University, Mus, Turkey
| | - Nurdan Gonul Baltaci
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey
| | - Orhan Erdogan
- Science Faculty, Department of Molecular Biology and Genetics, Atatürk University, Erzurum, Turkey
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Maher BA. Airborne Magnetite- and Iron-Rich Pollution Nanoparticles: Potential Neurotoxicants and Environmental Risk Factors for Neurodegenerative Disease, Including Alzheimer’s Disease. J Alzheimers Dis 2019; 71:361-375. [DOI: 10.3233/jad-190204] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Gonet T, Maher BA. Airborne, Vehicle-Derived Fe-Bearing Nanoparticles in the Urban Environment: A Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:9970-9991. [PMID: 31381310 DOI: 10.1021/acs.est.9b01505] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Airborne particulate matter poses a serious threat to human health. Exposure to nanosized (<0.1 μm), vehicle-derived particulates may be hazardous due to their bioreactivity, their ability to penetrate every organ, including the brain, and their abundance in the urban atmosphere. Fe-bearing nanoparticles (<0.1 μm) in urban environments may be especially important because of their pathogenicity and possible association with neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases. This review examines current knowledge regarding the sources of vehicle-derived Fe-bearing nanoparticles, their chemical and mineralogical compositions, grain size distribution and potential hazard to human health. We focus on data reported for the following sources of Fe-bearing nanoparticles: exhaust emissions (both diesel and gasoline), brake wear, tire and road surface wear, resuspension of roadside dust, underground, train and tram emissions, and aircraft and shipping emissions. We identify limitations and gaps in existing knowledge as well as future challenges and perspectives for studies of airborne Fe-bearing nanoparticles.
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Affiliation(s)
- Tomasz Gonet
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University , Lancaster LA1 4YQ , United Kingdom
| | - Barbara A Maher
- Centre for Environmental Magnetism & Palaeomagnetism, Lancaster Environment Centre, Lancaster University , Lancaster LA1 4YQ , United Kingdom
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Yumoto S, Kakimi S, Ishikawa A. Colocalization of Aluminum and Iron in Nuclei of Nerve Cells in Brains of Patients with Alzheimer's Disease. J Alzheimers Dis 2019; 65:1267-1281. [PMID: 30149443 PMCID: PMC6218123 DOI: 10.3233/jad-171108] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Increasing evidence indicates that metal-induced oxidative stress plays a pivotal role in the pathogenesis of Alzheimer's disease (AD). Recently, the presence of 8-hydroxydeoxyguanosine, a biomarker of oxidative DNA damage, was demonstrated in nuclear DNA (nDNA) in the AD brain. Iron (Fe) is a pro-oxidant metal capable of generating hydroxyl radicals that can oxidize DNA, and aluminum (Al) has been reported to facilitate Fe-mediated oxidation. In the present study, we examined the elements contained in the nuclei of nerve cells in AD brains using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS). Our results demonstrated that Al and Fe were colocalized in the nuclei of nerve cells in the AD brain. Within the nuclei, the highest levels of both Al and Fe were measured in the nucleolus. The SEM-EDS analysis also revealed the colocalization of Al and Fe in the heterochromatin and euchromatin in neuronal nuclei in the AD brain. Notably, the levels of Al and Fe in the nucleus of nerve cells in the AD brain were markedly higher than those in age-matched control brains. We hypothesize that the colocalization of Al and Fe in the nucleus of nerve cells might induce oxidative damage to nDNA and concurrently inhibit the repair of oxidatively damaged nDNA. An imbalance caused by the increase in DNA damage and the decrease in DNA repair activities might lead to the accumulation of unrepaired damaged DNA, eventually causing neurodegeneration and the development of AD.
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Affiliation(s)
- Sakae Yumoto
- Yumoto Institute of Neurology, Kawadacho, Shinjuku-ku, Tokyo, Japan
| | - Shigeo Kakimi
- Department of Functional Morphology, Nihon University School of Medicine, Ohyaguchiuemachi, Itabashi-ku, Tokyo, Japan
| | - Akira Ishikawa
- Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajousui, Setagaya-ku, Tokyo, Japan
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Multi-copper ferroxidase deficiency leads to iron accumulation and oxidative damage in astrocytes and oligodendrocytes. Sci Rep 2019; 9:9437. [PMID: 31263155 PMCID: PMC6603037 DOI: 10.1038/s41598-019-46019-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/21/2019] [Indexed: 12/31/2022] Open
Abstract
Accumulation of iron has been associated with the pathobiology of various disorders of the central nervous system. Our previous work has shown that hephaestin (Heph) and ceruloplasmin (Cp) double knockout (KO) mice induced iron accumulation in multiple brain regions and that this was paralleled by increased oxidative damage and deficits in cognition and memory. In this study, we enriched astrocytes and oligodendrocytes from the cerebral cortex of neonatal wild-type (WT), Heph KO and Cp KO mice. We demonstrated that Heph is highly expressed in oligodendrocytes, while Cp is mainly expressed in astrocytes. Iron efflux was impaired in Cp KO astrocytes and Heph KO oligodendrocytes and was associated with increased oxidative stress. The expression of Heph, Cp, and other iron-related genes was examined in astrocytes and oligodendrocytes both with and without iron treatment. Interestingly, we found that the expression of the mRNA encoding ferroportin 1, a transmembrane protein that cooperates with CP and HEPH to export iron from cells, was positively correlated with Cp expression in astrocytes, and with Heph expression in oligodendrocytes. Our findings collectively demonstrate that HEPH and CP are important for the prevention of glial iron accumulation and thus may be protective against oxidative damage.
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40
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Coskuner-Weber O, Uversky VN. Alanine Scanning Effects on the Biochemical and Biophysical Properties of Intrinsically Disordered Proteins: A Case Study of the Histidine to Alanine Mutations in Amyloid-β42. J Chem Inf Model 2019; 59:871-884. [DOI: 10.1021/acs.jcim.8b00926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Orkid Coskuner-Weber
- Molecular Biotechnology, Turkish-German University, Sahinkaya Caddesi, No. 86, Beykoz, Istanbul 34820, Turkey
| | - Vladimir N. Uversky
- Department of Molecular Medicine and USF Health Byrd Alzheimer’s Research Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida 33612, United States
- Institute for Biological Instrumentation, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
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41
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Khan S, Cohen D. Using the magnetoencephalogram to noninvasively measure magnetite in the living human brain. Hum Brain Mapp 2018; 40:1654-1665. [PMID: 30457688 PMCID: PMC6587731 DOI: 10.1002/hbm.24477] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/04/2018] [Accepted: 11/06/2018] [Indexed: 12/03/2022] Open
Abstract
During the past several decades there has been much interest in the existence of magnetite particles in the human brain and their accumulation with age. These particles also appear to play an important role in neurodegenerative diseases of the brain. However, up to now the amount and distribution of these particles has been measured only in post‐mortem brain tissue. Although in‐vivo MRI measurements do show iron compounds generally, MRI cannot separate them according to their magnetic phases, which are associated with their chemical interactions. In contrast, we here offer a new noninvasive, in‐vivo method which is selectively sensitive only to particles which can be strongly magnetized. We magnetize these particles with a strong magnetic field through the head, and then measure the resulting magnetic fields, using the dcMagnetoencephalogram (dcMEG). From these data, the mass and locations of the particles can be estimated, using a distributed inverse solution. To test the method, we measured 11 healthy male subjects (ages 19–89 year). Accumulation of magnetite, in the hippocampal formation or nearby structures, was observed in the older men. These in‐vivo findings agree with reports of post‐mortem measurements of their locations, and of their accumulation with age. Thus, our findings allow in‐vivo measurement of magnetite in the human brain, and possibly open the door for new studies of neurodegenerative diseases of the brain.
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Affiliation(s)
- Sheraz Khan
- Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.,Athinoula A. Martinos Center for Biomedical Imaging, Boston, Massachusetts
| | - David Cohen
- Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.,Athinoula A. Martinos Center for Biomedical Imaging, Boston, Massachusetts.,Francis Bitter Magnet Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts
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42
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Pretorius L, Kell DB, Pretorius E. Iron Dysregulation and Dormant Microbes as Causative Agents for Impaired Blood Rheology and Pathological Clotting in Alzheimer's Type Dementia. Front Neurosci 2018; 12:851. [PMID: 30519157 PMCID: PMC6251002 DOI: 10.3389/fnins.2018.00851] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/30/2018] [Indexed: 12/13/2022] Open
Abstract
Alzheimer’s disease and other similar dementias are debilitating neurodegenerative disorders whose etiology and pathogenesis remain largely unknown, even after decades of research. With the anticipated increase in prevalence of Alzheimer’s type dementias among the more susceptible aging population, the need for disease-modifying treatments is urgent. While various hypotheses have been put forward over the last few decades, we suggest that Alzheimer’s type dementias are triggered by external environmental factors, co-expressing in individuals with specific genetic susceptibilities. These external stressors are defined in the Iron Dysregulation and Dormant Microbes (IDDM) hypothesis, previously put forward. This hypothesis is consistent with current literature in which serum ferritin levels of individuals diagnosed with Alzheimer’s disease are significantly higher compared those of age- and gender-matched controls. While iron dysregulation contributes to oxidative stress, it also causes microbial reactivation and virulence of the so-called dormant blood (and tissue) microbiome. Dysbiosis (changes in the microbiome) or previous infections can contribute to the dormant blood microbiome (atopobiosis1), and also directly promotes systemic inflammation via the amyloidogenic formation and shedding of potent inflammagens such as lipopolysaccharides. The simultaneous iron dysregulation and microbial aberrations affect the hematological system, promoting fibrin amylodiogenesis, and pathological clotting. Systemic inflammation and oxidative stress can contribute to blood brain barrier permeability and the ensuing neuro-inflammation, characteristic of Alzheimer’s type dementias. While large inter-individual variability exists, especially concerning disease pathogenesis, the IDDM hypothesis acknowledges primary causative factors which can be targeted for early diagnosis and/or for prevention of disease progression.
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Affiliation(s)
- Lesha Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Douglas B Kell
- School of Chemistry, The University of Manchester, Manchester, United Kingdom.,The Manchester Institute of Biotechnology, The University of Manchester, Manchester, United Kingdom
| | - Etheresia Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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43
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Weiland A, Wang Y, Wu W, Lan X, Han X, Li Q, Wang J. Ferroptosis and Its Role in Diverse Brain Diseases. Mol Neurobiol 2018; 56:4880-4893. [PMID: 30406908 DOI: 10.1007/s12035-018-1403-3] [Citation(s) in RCA: 298] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/18/2018] [Indexed: 02/07/2023]
Abstract
Ferroptosis is a recently identified, iron-regulated, non-apoptotic form of cell death. It is characterized by cellular accumulation of lipid reactive oxygen species that ultimately leads to oxidative stress and cell death. Although first identified in cancer cells, ferroptosis has been shown to have significant implications in several neurologic diseases, such as ischemic and hemorrhagic stroke, Alzheimer's disease, and Parkinson's disease. This review summarizes current research on ferroptosis, its underlying mechanisms, and its role in the progression of different neurologic diseases. Understanding the role of ferroptosis could provide valuable information regarding treatment and prevention of these devastating diseases.
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Affiliation(s)
- Abigail Weiland
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Yamei Wang
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Neural Regeneration and Repair, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Weihua Wu
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Neural Regeneration and Repair, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Xi Lan
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Xiaoning Han
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Qian Li
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory of Neural Regeneration and Repair, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
- Advanced Innovation Center for Human Brain Protection, Captical Medical University, Beijing, 100069, China.
| | - Jian Wang
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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Yu J, Wang N, Qi F, Wang X, Zhu Q, Lu Y, Zhang H, Che F, Li W. Serum ferritin is a candidate biomarker of disease aggravation in amyotrophic lateral sclerosis. Biomed Rep 2018; 9:333-338. [PMID: 30233786 DOI: 10.3892/br.2018.1138] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease. The mechanism that defines the loss of neurons in ALS is still not clearly understood, and there is no effective therapy to block its progression. Previous studies indicate that a disorder of iron homeostasis exists in ALS and based on this, the change of serum iron and ferritin and the association between iron metabolism and clinical features in Chinese Han patients with ALS was further investigated in the present study, in order to define its pathogenesis. Two cohorts were established: An ALS group consisting of 24 patients and a control group consisting of 38 healthy volunteers. Venous blood samples were collected for serum iron and ferritin analysis. The results indicated that the levels of serum iron were significantly decreased in patients with ALS (P<0.05), while there was no significant difference in serum ferritin between the ALS and control groups. However, the levels of serum ferritin were increased significantly in ALS patients with bulbar-onset (vs. limb-onset in females), dysphagia (vs. without dysphagia), longer disease duration (>12 months vs. ≤12 months in males) and lower ALS Functional Rating Scale-Revised score (<33 vs. ≥33; P<0.05). These results suggested that there was dysregulation of iron metabolism in Chinese Han patients with ALS and that serum ferritin may be a candidate biomarker of aggravation in these patients.
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Affiliation(s)
- Jixu Yu
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China.,Central Laboratory, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Nian Wang
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Faying Qi
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Xianjun Wang
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Qiyi Zhu
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Yucheng Lu
- Central Laboratory, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Huiling Zhang
- Clinical Laboratory, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Fengyuan Che
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China.,Central Laboratory, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Wei Li
- Department of Neurology, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
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Zheng J, Jiang R, Chen M, Maimaitiming Z, Wang J, Anderson GJ, Vulpe CD, Dunaief JL, Chen H. Multi-Copper Ferroxidase-Deficient Mice Have Increased Brain Iron Concentrations and Learning and Memory Deficits. J Nutr 2018; 148:643-649. [PMID: 29659961 DOI: 10.1093/jn/nxy012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 01/11/2018] [Indexed: 11/12/2022] Open
Abstract
Background The accumulation of iron occurs in the central nervous system (CNS) in several neurodegenerative diseases. Although multi-copper ferroxidases (MCFs) play an important role in cellular iron metabolism and homeostasis, the mechanism of MCFs in the CNS remains unclear. Objective The aim was to study the role of MCFs in CNS iron metabolism and homeostasis by using hephaestin/ceruloplasmin (Heph/Cp) double knockout (KO) mice. Methods Heph/Cp double KO male mice were generated by crossing both single KO mice. In Heph/Cp KO and wild-type (WT) control mice at 4 wk and 6 mo of age, iron concentrations of selected brain regions were measured by atomic absorption spectrophotometry, and gene expressions of Heph, Cp, ferroportin 1 (Fpn1) [+ iron responsive element (IRE)], L-ferritin, H-ferritin, transferrin receptor 1 (Tfrc), and divalent metal transporter 1 (Dmt1) (+IRE) were quantitated by quantitative reverse transcriptase-polymerase chain reaction. Brain region L-ferritin protein concentration, superoxide dismutase (SOD), and glutathione peroxidase (GPx) activities and malondialdehyde (MDA) concentration were also determined. Learning and memory abilities in Heph/Cp KO and WT control mice at 6 mo of age were tested by the IntelliCage system (New Behavior). Results Iron concentration was significantly higher in Heph/Cp KO mice than in WT control mice at 4 wk of age in the cortex (50%), hippocampus (120%), brainstem (35%), and cerebellum (220%) and at 6 mo of age in the cortex (140%), hippocampus (420%), brainstem (560%), and cerebellum (340%). L-Ferritin and MDA concentrations were significantly higher and SOD and GPx activities were significantly lower in the cortex, hippocampus, brainstem, and cerebellum of KO mice than in those of WT controls at both 4 wk and 6 mo of age. Iron-related gene expressions also differed significantly between groups. Learning and memory deficits occurred in Heph/Cp KO mice at 6 mo of age. Conclusion Mutation of both MCFs in mice induces iron accumulation in brain regions, oxidative damage, and learning and memory defects.
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Affiliation(s)
- Jiashuo Zheng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Ruiwei Jiang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Min Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Zaitunamu Maimaitiming
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Junzhuo Wang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Gregory J Anderson
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Chris D Vulpe
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, University of Florida, Gainesville, FL
| | - Joshua L Dunaief
- FM Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania, PA
| | - Huijun Chen
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
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Apostolakis S, Kypraiou AM. Iron in neurodegenerative disorders: being in the wrong place at the wrong time? Rev Neurosci 2018; 28:893-911. [PMID: 28792913 DOI: 10.1515/revneuro-2017-0020] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/02/2017] [Indexed: 12/22/2022]
Abstract
Brain iron deposits have been reported consistently in imaging and histologic examinations of patients with neurodegenerative disorders. While the origins of this finding have not been clarified yet, it is speculated that impaired iron homeostasis or deficient transport mechanisms result in the accumulation of this highly toxic metal ultimately leading to formation of reactive oxygen species and cell death. On the other hand, there are also those who support that iron is just an incidental finding, a by product of neuronal loss. A literature review has been performed in order to present the key findings in support of the iron hypothesis of neurodegeneration, as well as to identify conditions causing or resulting from iron overload and compare and contrast their features with the most prominent neurodegenerative disorders. There is an abundance of experimental and observational findings in support of the hypothesis in question; however, as neurodegeneration is a rare incident of commonly encountered iron-associated disorders of the nervous system, and this metal is found in non-neurodegenerative disorders as well, it is possible that iron is the result or even an incidental finding in neurodegeneration. Understanding the underlying processes of iron metabolism in the brain and particularly its release during cell damage is expected to provide a deeper understanding of the origins of neurodegeneration in the years to come.
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Kozlov S, Afonin A, Evsyukov I, Bondarenko A. Alzheimer's disease: as it was in the beginning. Rev Neurosci 2018; 28:825-843. [PMID: 28704198 DOI: 10.1515/revneuro-2017-0006] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/19/2017] [Indexed: 01/09/2023]
Abstract
Since Alzheimer's disease was first described in 1907, many attempts have been made to reveal its main cause. Nowadays, two forms of the disease are known, and while the hereditary form of the disease is clearly caused by mutations in one of several genes, the etiology of the sporadic form remains a mystery. Both forms share similar sets of neuropathological and molecular manifestations, including extracellular deposition of amyloid-beta, intracellular accumulation of hyperphosphorylated tau protein, disturbances in both the structure and functions of mitochondria, oxidative stress, metal ion metabolism disorders, impairment of N-methyl-D-aspartate receptor-related signaling pathways, abnormalities of lipid metabolism, and aberrant cell cycle reentry in some neurons. Such a diversity of symptoms led to proposition of various hypotheses for explaining the development of Alzheimer's disease, the amyloid hypothesis, which postulates the key role of amyloid-beta in Alzheimer's disease development, being the most prominent. However, this hypothesis does not fully explain all of the molecular abnormalities and is therefore heavily criticized. In this review, we propose a hypothetical model of Alzheimer's disease progression, assuming a key role of age-related mitochondrial dysfunction, as was postulated in the mitochondrial cascade hypothesis. Our model explains the connections between all the symptoms of Alzheimer's disease, with particular attention to autophagy, metal metabolism disorders, and aberrant cell cycle re-entry in neurons. Progression of the Alzheimer's disease appears to be a complex process involving aging and too many protective mechanisms affecting one another, thereby leading to even greater deleterious effects.
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48
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Vaz FNC, Fermino BL, Haskel MVL, Wouk J, de Freitas GBL, Fabbri R, Montagna E, Rocha JBT, Bonini JS. The Relationship Between Copper, Iron, and Selenium Levels and Alzheimer Disease. Biol Trace Elem Res 2018; 181:185-191. [PMID: 28500578 DOI: 10.1007/s12011-017-1042-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/30/2017] [Indexed: 12/29/2022]
Abstract
This study aimed to evaluate the concentrations of copper, iron, and selenium in elderly people with Alzheimer disease (AD), comparing the same parameters in a paired group of healthy people, in order to verify if the amount of these metals may influence the cognitive impairment progression. Patients' cognitive impairment was evaluated by Clinical Dementia Rating (CDR). The elementary quantification of erythrocytes was performed by inductively coupled plasma mass spectrometry technique. The statistical analyses were carried out by SPSS software 20.0 version, employing Shapiro-Wilk, Wilcoxon, Kruskall-Wallis, and Spearman correlation tests, considering significant results of p < 0.05. The sample was composed of 34% (n = 11) of women and 66% (n = 21) of men in each group. The AD group was characterized by a higher concentration of copper (p < 0.0001) and iron (p < 0.0001); however, there is no significant difference in selenium level. The analyses of the metal levels in different stages of AD were not significant in CDR-1, however in CDR-2 and CDR-3, elevated levels of copper and iron were observed; in CDR-3 patients, the level of selenium was lower (p < 0.008) compared to that of healthy controls. Patients with Alzheimer disease studied present increase in biometal blood levels, especially of copper and iron, and such increase can be different according to the disease stage and can cause more impairment cognitive functions in AD.
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Affiliation(s)
- Felipe Nathanael Coelho Vaz
- Campus CEDETEG, Pharmacy Department, Midwest State University, Simeão Camargo Varella de Sá, Vila Carli, Guarapuava, PR, 85040-080, Brazil
| | - Bárbara Luisa Fermino
- Campus CEDETEG, Pharmacy Department, Midwest State University, Simeão Camargo Varella de Sá, Vila Carli, Guarapuava, PR, 85040-080, Brazil
| | - Maria Vaitsa Loch Haskel
- Campus CEDETEG, Pharmacy Department, Midwest State University, Simeão Camargo Varella de Sá, Vila Carli, Guarapuava, PR, 85040-080, Brazil
| | - Jéssica Wouk
- Campus CEDETEG, Pharmacy Department, Midwest State University, Simeão Camargo Varella de Sá, Vila Carli, Guarapuava, PR, 85040-080, Brazil
| | | | - Roberta Fabbri
- Memory Center, Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, 90610-000, Brazil
- Dipartimento di Neuroscienze, Psicologia, Areadel Farmaco e Salute del Bambino, Sezionedi Farmacologia e Tossicologia, Universitádi Firenze, 50139, Florence, Italy
| | - Erik Montagna
- Faculdade de Medicina do ABC, Departamento de Pós-Graduação, Pesquisa e Inovação, Av. Lauro Gomes, 2000, Santo Andre, SP, 09060-870, Brazil.
| | - João Batista Teixeira Rocha
- Toxicological Biochemistry Department, Federal University of Santa Maria, Roraima Avenue, 1000, Cidade Universitária, Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Juliana Sartori Bonini
- Campus CEDETEG, Pharmacy Department, Midwest State University, Simeão Camargo Varella de Sá, Vila Carli, Guarapuava, PR, 85040-080, Brazil
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Unraveling the Burden of Iron in Neurodegeneration: Intersections with Amyloid Beta Peptide Pathology. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2850341. [PMID: 29581821 PMCID: PMC5831758 DOI: 10.1155/2018/2850341] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 12/17/2017] [Indexed: 12/14/2022]
Abstract
Iron overload is a hallmark of many neurodegenerative processes such as Alzheimer's, Parkinson's, and Huntington's diseases. Unbound iron accumulated as a consequence of brain aging is highly reactive with water and oxygen and produces reactive oxygen species (ROS) or free radicals. ROS are toxic compounds able to damage cell membranes, DNA, and mitochondria. Which are the mechanisms involved in neuronal iron homeostasis and in neuronal response to iron-induced oxidative stress constitutes a cutting-edge topic in metalloneurobiology. Increasing our knowledge about the underlying mechanisms that operate in iron accumulation and their consequences would shed light on the comprehension of the molecular events that participate in the pathophysiology of the abovementioned neurodegenerative diseases. In this review, current evidences about iron accumulation in the brain, the signaling mechanisms triggered by metal overload, as well as the interaction between amyloid β (Aβ) and iron, will be summarized.
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Pretorius E, Bester J, Kell DB. A Bacterial Component to Alzheimer's-Type Dementia Seen via a Systems Biology Approach that Links Iron Dysregulation and Inflammagen Shedding to Disease. J Alzheimers Dis 2018; 53:1237-56. [PMID: 27340854 PMCID: PMC5325058 DOI: 10.3233/jad-160318] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The progression of Alzheimer's disease (AD) is accompanied by a great many observable changes, both molecular and physiological. These include oxidative stress, neuroinflammation, and (more proximal to cognitive decline) the death of neuronal and other cells. A systems biology approach seeks to organize these observed variables into pathways that discriminate those that are highly involved (i.e., causative) from those that are more usefully recognized as bystander effects. We review the evidence that iron dysregulation is one of the central causative pathway elements here, as this can cause each of the above effects. In addition, we review the evidence that dormant, non-growing bacteria are a crucial feature of AD, that their growth in vivo is normally limited by a lack of free iron, and that it is this iron dysregulation that is an important factor in their resuscitation. Indeed, bacterial cells can be observed by ultrastructural microscopy in the blood of AD patients. A consequence of this is that the growing cells can shed highly inflammatory components such as lipopolysaccharides (LPS). These too are known to be able to induce (apoptotic and pyroptotic) neuronal cell death. There is also evidence that these systems interact with elements of vitamin D metabolism. This integrative systems approach has strong predictive power, indicating (as has indeed been shown) that both natural and pharmaceutical iron chelators might have useful protective roles in arresting cognitive decline, and that a further assessment of the role of microbes in AD development is more than highly warranted.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Janette Bester
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Douglas B Kell
- School of Chemistry, The University of Manchester, Manchester, Lancs, UK.,The Manchester Institute of Biotechnology, The University of Manchester, Manchester, Lancs, UK.,Centre for Synthetic Biology of Fine and Speciality Chemicals, The University of Manchester, Manchester, Lancs, UK
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