251
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Chowdhury MA. Metal-Organic-Frameworks as Contrast Agents in Magnetic Resonance Imaging. CHEMBIOENG REVIEWS 2017. [DOI: 10.1002/cben.201600027] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mohammad A. Chowdhury
- Monash University; School of Chemistry; Wellington Road, Clayton 3800 Melbourne Victoria Australia
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252
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Marreilha dos Santos AP, Andrade V, Aschner M. Neuroprotective and Therapeutic Strategies for Manganese-Induced Neurotoxicity. CLINICAL PHARMACOLOGY AND TRANSLATIONAL MEDICINE 2017; 1:54-62. [PMID: 30854510 PMCID: PMC6402347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Manganese (Mn) is an essential element required for growth, development and general maintenance of health. However, chronic or high occupational and environmental exposure to excessive levels of Mn has long been known to lead to a progressive neurological disorder similar to Parkinsonism. Manganism patients display a variety of symptoms, including mental, cognitive and behavioural impediments, as well as motor dysfunctions that are associated with basal ganglia dysfunction. Taking into account the pharmacokinetics and Mn-related toxicity mechanisms, several neuroprotective compounds and therapeutic approaches have been investigated to assess their efficacy in mitigating its neurotoxicity. Here, we will briefly address some of the toxic mechanisms of Mn, followed by neuroprotective strategies and therapeutic approaches aiming to reduce or treat Mn induced neurotoxicity. Natural and synthetic antioxidants, anti-inflammatory compounds, ATP/ADP ratio protectors and glutamate protectors have been introduced in view of decreasing Mn-induced neurotoxicity. In addition, the efficacy and mechanisms of several therapeutic interventions such as levodopa, ethylene-diamine-tetraacetic acid (EDTA) and para-aminosalicylic acid (PAS), aimed at ameliorating Mn neurotoxic symptoms in humans, will be reviewed.
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Affiliation(s)
- AP Marreilha dos Santos
- Institute of Medicine Research (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon. Portugal
| | - V Andrade
- Institute of Medicine Research (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon. Portugal
| | - M Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, USA
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253
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Alaverdashvili M, Lapointe V, Whishaw IQ, Cross AR. Manganese-Enhanced Magnetic Resonance Imaging and Studies of Rat Behavior: Transient Motor Deficit in Skilled Reaching, Rears, and Activity in Rats After a Single Dose of MnCl 2. MAGNETIC RESONANCE INSIGHTS 2017; 10:1178623X17706878. [PMID: 28579797 PMCID: PMC5428135 DOI: 10.1177/1178623x17706878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 02/17/2017] [Indexed: 12/25/2022]
Abstract
Manganese-enhanced magnetic resonance imaging (MEMRI) has been suggested to be a useful tool to visualize and map behavior-relevant neural populations at large scale in freely behaving rodents. A primary concern in MEMRI applications is Mn2+ toxicity. Although a few studies have specifically examined toxicity on gross motor behavior, Mn2+ toxicity on skilled motor behavior was not explored. Thus, the objective of this study was to combine manganese as a functional contrast agent with comprehensive behavior evaluation. We evaluated Mn2+ effect on skilled reach-to-eat action, locomotion, and balance using a single pellet reaching task, activity cage, and cylinder test, respectively. The tests used are sensitive to the pathophysiology of many neurological and neurodegenerative disorders of the motor system. The behavioral testing was done in combination with a moderate dose of manganese. Behavior was studied before and after a single, intravenous infusion of MnCl2 (48 mg/kg). The rats were imaged at 1, 3, 5, 7, and 14 days following infusion. The results show that MnCl2 infusion resulted in detectable abnormalities in skilled reaching, locomotion, and balance that recovered within 3 days compared with the infusion of saline. Because some tests and behavioral measures could not detect motor abnormalities of skilled movements, comprehensive evaluation of motor behavior is critical in assessing the effects of MnCl2. The relaxation mapping results suggest that the transport of Mn2+ into the brain is through the choroid plexus-cerebrospinal fluid system with the primary entry point and highest relaxation rates found in the pituitary gland. Relaxation rates in the pituitary gland correlated with measures of motor skill, suggesting that altered motor ability is related to the level of Mn circulating in the brain. Thus, combined MEMRI and behavioral studies that both achieve adequate image enhancement and are also free of motor skills deficits are difficult to achieve using a single systemic dose of MnCl2.
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Affiliation(s)
- Mariam Alaverdashvili
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.,Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Valerie Lapointe
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Ian Q Whishaw
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Albert R Cross
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.,Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, Canada
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254
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Hernández-Pellón A, Fernández-Olmo I, Ledoux F, Courcot L, Courcot D. Characterization of manganese-bearing particles in the vicinities of a manganese alloy plant. CHEMOSPHERE 2017; 175:411-424. [PMID: 28237517 DOI: 10.1016/j.chemosphere.2017.02.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 05/12/2023]
Abstract
Numerous studies have associated air manganese (Mn) exposure with negative health effects, primarily neurotoxic disorders. Despite there is not a specific European regulation, institutions such as the World Health Organization (WHO) have proposed an annual average guideline value of 150 ng/m3. Bioaccessibility and toxicity mechanisms of Mn remain unclear, however it is generally agreed that adverse health effects are strongly linked to particle size and morphology, chemical composition and oxidation state. This study aims to deepen the understanding of the physico-chemical characteristics of PM10 and deposition samples collected in an urban area in the proximities of a ferromanganese alloy plant. Total Mn content was determined by ICP-MS after a microwave-assisted acid digestion. The size, morphology and chemical composition of individual particles were studied by SEM-EDX. XRD was used to identify the major crystalline phases. Most of the particles observed by SEM-EDX contain Mn. 60% of Mn-PM10 particles were spheres of small size and were attributed to condensation processes at the smelting unit. Mn-bearing particles present in deposition were characterized by irregular shapes and bigger sizes, most of them consisting of SiMn slags and Mn ores and alloys, and attributed to diffuse emissions from raw material and product handling and processing. Due to the differences in the characteristics of Mn-bearing particles found in the different matrices, further studies on the potential toxicity and health effects of these particles should be done, especially in relation with the small and spherical particles present in PM10, which are expected to be more problematic.
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Affiliation(s)
- Ana Hernández-Pellón
- Dpto. de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Cantabria, Spain.
| | - Ignacio Fernández-Olmo
- Dpto. de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Cantabria, Spain
| | - Frédéric Ledoux
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV, EA4492), Université du Littoral Côte d'Opale, 145 avenue Maurice Schumann, 59140 Dunkerque, France
| | - Lucie Courcot
- Laboratoire d'Océanologie et de Géosciences (LOG, CNRS UMR8187), Université du Littoral Côte d'Opale, Wimereux, France
| | - Dominique Courcot
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV, EA4492), Université du Littoral Côte d'Opale, 145 avenue Maurice Schumann, 59140 Dunkerque, France
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255
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Bjørklund G, Aaseth J, Skalny AV, Suliburska J, Skalnaya MG, Nikonorov AA, Tinkov AA. Interactions of iron with manganese, zinc, chromium, and selenium as related to prophylaxis and treatment of iron deficiency. J Trace Elem Med Biol 2017; 41:41-53. [PMID: 28347462 DOI: 10.1016/j.jtemb.2017.02.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/21/2017] [Accepted: 02/07/2017] [Indexed: 11/17/2022]
Abstract
Iron (Fe) deficiency is considered as the most common nutritional deficiency. Iron deficiency is usually associated with low Fe intake, blood loss, diseases, poor absorption, gastrointestinal parasites, or increased physiological demands as in pregnancy. Nutritional Fe deficiency is usually treated with Fe tablets, sometimes with Fe-containing multimineral tablets. Trace element interactions may have a significant impact on Fe status. Existing data demonstrate a tight interaction between manganese (Mn) and Fe, especially in Fe-deficient state. The influence of Mn on Fe homeostasis may be mediated through its influence on Fe absorption, circulating transporters like transferrin, and regulatory proteins. The existing data demonstrate that the influence of zinc (Zn) on Fe status may be related to their competition for metal transporters. Moreover, Zn may be involved in regulation of hepcidin production. At the same time, human data on the interplay between Fe and Zn especially in terms of Fe-deficiency and supplementation are contradictory, demonstrating both positive and negative influence of Zn on Fe status. Numerous data also demonstrate the possibility of competition between Fe and chromium (Cr) for transferrin binding. At the same time, human data on the interaction between these metals are contradictory. Therefore, while managing hypoferremia and Fe-deficiency anemia, it is recommended to assess the level of other trace elements in parallel with indices of Fe homeostasis. It is supposed that simultaneous correction of trace element status in Fe deficiency may help to decrease possible antagonistic or increase synergistic interactions.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway.
| | - Jan Aaseth
- Department of Public Health, Hedmark University of Applied Sciences, Elverum, Norway; Department of Research, Innlandet Hospital Trust, Brumunddal, Norway
| | - Anatoly V Skalny
- RUDN University, Moscow, Russia; Orenburg State University, Orenburg, Russia; Yaroslavl State University, Yaroslavl, Russia; All-Russian Research Institute of Medicinal and Aromatic Plants, Moscow, Russia
| | | | | | - Alexandr A Nikonorov
- Orenburg State University, Orenburg, Russia; Orenburg State Medical University, Orenburg, Russia
| | - Alexey A Tinkov
- RUDN University, Moscow, Russia; Orenburg State University, Orenburg, Russia; Yaroslavl State University, Yaroslavl, Russia; Orenburg State Medical University, Orenburg, Russia
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256
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Gale EM, Caravan P, Rao AG, McDonald RJ, Winfeld M, Fleck RJ, Gee MS. Gadolinium-based contrast agents in pediatric magnetic resonance imaging. Pediatr Radiol 2017; 47:507-521. [PMID: 28409250 DOI: 10.1007/s00247-017-3806-0] [Citation(s) in RCA: 35] [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: 09/20/2016] [Revised: 11/16/2016] [Accepted: 02/10/2017] [Indexed: 12/17/2022]
Abstract
Gadolinium-based contrast agents can increase the accuracy and expediency of an MRI examination. However the benefits of a contrast-enhanced scan must be carefully weighed against the well-documented risks associated with administration of exogenous contrast media. The purpose of this review is to discuss commercially available gadolinium-based contrast agents (GBCAs) in the context of pediatric radiology. We discuss the chemistry, regulatory status, safety and clinical applications, with particular emphasis on imaging of the blood vessels, heart, hepatobiliary tree and central nervous system. We also discuss non-GBCA MRI contrast agents that are less frequently used or not commercially available.
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Affiliation(s)
- Eric M Gale
- Department of Radiology, The Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Peter Caravan
- Department of Radiology, The Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Anil G Rao
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA
| | - Robert J McDonald
- Department of Radiology, College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Matthew Winfeld
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Robert J Fleck
- Department of Pediatric Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Michael S Gee
- Division of Pediatric Imaging, Department of Radiology, MassGeneral Hospital for Children, Harvard Medical School, 55 Fruit St., Ellison 237, Boston, MA, 02114, USA.
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257
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Affiliation(s)
- Callum Livingstone
- Clinical Biochemistry Department, Royal Surrey County Hospital, NHS Foundation Trust, Guildford, UK
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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258
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Narayanan KB, Han SS. Colorimetric detection of manganese(II) ions using alginate-stabilized silver nanoparticles. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2954-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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259
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Poulsen SS, Knudsen KB, Jackson P, Weydahl IEK, Saber AT, Wallin H, Vogel U. Multi-walled carbon nanotube-physicochemical properties predict the systemic acute phase response following pulmonary exposure in mice. PLoS One 2017; 12:e0174167. [PMID: 28380028 PMCID: PMC5381870 DOI: 10.1371/journal.pone.0174167] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/04/2017] [Indexed: 01/08/2023] Open
Abstract
Pulmonary exposure to multi-walled carbon nanotubes (MWCNTs) has been linked to an increased risk of developing cardiovascular disease in addition to the well-documented physicochemical-dependent adverse lung effects. A proposed mechanism is through a strong and sustained pulmonary secretion of acute phase proteins to the blood. We identified physicochemical determinants of MWCNT-induced systemic acute phase response by analyzing effects of pulmonary exposure to 14 commercial, well-characterized MWCNTs in female C57BL/6J mice pulmonary exposed to 0, 6, 18 or 54 μg MWCNT/mouse. Plasma levels of acute phase response proteins serum amyloid A1/2 (SAA1/2) and SAA3 were determined on day 1, 28 or 92. Expression levels of hepatic Saa1 and pulmonary Saa3 mRNA levels were assessed to determine the origin of the acute phase response proteins. Pulmonary Saa3 mRNA expression levels were greater and lasted longer than hepatic Saa1 mRNA expression. Plasma SAA1/2 and SAA3 protein levels were related to time and physicochemical properties using adjusted, multiple regression analyses. SAA3 and SAA1/2 plasma protein levels were increased after exposure to almost all of the MWCNTs on day 1, whereas limited changes were observed on day 28 and 92. SAA1/2 and SAA3 protein levels did not correlate and only SAA3 protein levels correlated with neutrophil influx. The multiple regression analyses revealed a protective effect of MWCNT length on SAA1/2 protein level on day 1, such that a longer length resulted in lowered SAA1/2 plasma levels. Increased SAA3 protein levels were positively related to dose and content of Mn, Mg and Co on day 1, whereas oxidation and diameter of the MWCNTs were protective on day 28 and 92, respectively. The results of this study reveal very differently controlled pulmonary and hepatic acute phase responses after MWCNT exposure. As the responses were influenced by the physicochemical properties of the MWCNTs, this study provides the first step towards designing MWCNT that induce less SAA.
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Affiliation(s)
- Sarah S. Poulsen
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
- * E-mail:
| | | | - Petra Jackson
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| | | | - Anne T. Saber
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| | - Håkan Wallin
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
- Institute of Public Health, Copenhagen University, Copenhagen K, Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
- Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby, Denmark
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260
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Błażewicz A, Liao KY, Liao HH, Niziński P, Komsta Ł, Momčilović B, Jabłońska-Czapla M, Michalski R, Prystupa A, Sak JJ, Kocjan R. Alterations of Hair and Nail Content of Selected Trace Elements in Nonoccupationally Exposed Patients with Chronic Depression from Different Geographical Regions. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3178784. [PMID: 28386550 PMCID: PMC5366181 DOI: 10.1155/2017/3178784] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/22/2016] [Accepted: 01/10/2017] [Indexed: 01/10/2023]
Abstract
The aim of this study was to determine if altered levels of selected trace elements manifest themselves during chronic depression. To identify elements strongly associated with chronic depression, relationships between the elemental contents of hair and nails and the interelement correlations were checked. Inductively coupled plasma mass spectrometry and ion chromatography were used to evaluate the contents of Zn, Cu, Co, Pb, Mn, and Fe in hair and nail samples from a total of 415 subjects (295 patients and 120 healthy volunteers). The study included logistic regression models to predict the probability of chronic depression. To investigate possible intercorrelations among the studied elements, the scaled principal component analysis was used. The research has revealed differences in TE levels in the group of depressed men and women in comparison to the healthy subjects. Statistically significant differences in both hair and nails contents of several elements were observed. Our study also provides strong evidence that the intermediary metabolism of certain elements is age- and gender-dependent. Zn, Mn, Pb, and Fe contents in hair/nails seem to be strongly associated with chronic depression. We found no statistically significant residence-related differences in the contents of studied elements in nonoccupationally exposed patients and healthy subjects.
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Affiliation(s)
- Anna Błażewicz
- Chair of Chemistry, Department of Analytical Chemistry, Medical University of Lublin, Chodzki 4a St., 20-093 Lublin, Poland
| | - Kuan-Yung Liao
- Homu Clinic, No. 61, Dongping Rd., East Dist., Tainan City 701, Taiwan
| | - Heng-Hsin Liao
- Homu Clinic, No. 61, Dongping Rd., East Dist., Tainan City 701, Taiwan
| | - Przemysław Niziński
- Chair of Chemistry, Department of Analytical Chemistry, Medical University of Lublin, Chodzki 4a St., 20-093 Lublin, Poland
| | - Łukasz Komsta
- Chair and Department of Medicinal Chemistry, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland
| | - Berislav Momčilović
- Institute for Research and Development of the Sustainable Eco Systems, Srebrnjak 59, 10000 Zagreb, Croatia
| | - Magdalena Jabłońska-Czapla
- Institute of Environmental Engineering of Polish Academy of Sciences, Sklodowska-Curie 34 Street, 41-819 Zabrze, Poland
| | - Rajmund Michalski
- Institute of Environmental Engineering of Polish Academy of Sciences, Sklodowska-Curie 34 Street, 41-819 Zabrze, Poland
| | - Andrzej Prystupa
- Chair and Department of Internal Diseases, Medical University of Lublin, Staszica 16, 20-081 Lublin, Poland
| | - Jarosław J. Sak
- Department of Ethics and Human Philosophy, Medical University of Lublin, Staszica 4/6, 20-059 Lublin, Poland
- Department of Nephrology, Medical University of Lublin, Jaczewskiego 8, 20-954 Lublin, Poland
| | - Ryszard Kocjan
- Chair of Chemistry, Department of Analytical Chemistry, Medical University of Lublin, Chodzki 4a St., 20-093 Lublin, Poland
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261
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Jin J, Saqui O, Allard JP. Effect of Discontinuation of Manganese Supplementation From Home Parenteral Nutrition Solutions on Whole-Blood Levels and Magnetic Resonance Imaging of the Brain. JPEN J Parenter Enteral Nutr 2017; 42:164-170. [DOI: 10.1177/0148607117690519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 12/13/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Jennifer Jin
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Olivia Saqui
- University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Johane P. Allard
- University Health Network, University of Toronto, Toronto, Ontario, Canada
- Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada
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262
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Shichijo K, Fujimoto N, Uzbekov D, Kairkhanova Y, Saimova A, Chaizhunusova N, Sayakenov N, Shabdarbaeva D, Aukenov N, Azimkhanov A, Kolbayenkov A, Mussazhanova Z, Niino D, Nakashima M, Zhumadilov K, Stepanenko V, Tomonaga M, Rakhypbekov T, Hoshi M. Internal exposure to neutron-activated 56Mn dioxide powder in Wistar rats-Part 2: pathological effects. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2017; 56:55-61. [PMID: 28180988 PMCID: PMC5315723 DOI: 10.1007/s00411-016-0676-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 12/23/2016] [Indexed: 05/18/2023]
Abstract
To fully understand the radiation effects of the atomic bombing of Hiroshima and Nagasaki among the survivors, radiation from neutron-induced radioisotopes in soil and other materials should be considered in addition to the initial radiation directly received from the bombs. This might be important for evaluating the radiation risks to the people who moved to these cities soon after the detonations and probably inhaled activated radioactive "dust." Manganese-56 is known to be one of the dominant radioisotopes produced in soil by neutrons. Due to its short physical half-life, 56Mn emits residual radiation during the first hours after explosion. Hence, the biological effects of internal exposure of Wistar rats to 56Mn were investigated in the present study. MnO2 powder was activated by a neutron beam to produce radioactive 56Mn. Rats were divided into four groups: those exposed to 56Mn, to non-radioactive Mn, to 60Co γ rays (2 Gy, whole body), and those not exposed to any additional radiation (control). On days 3, 14, and 60 after exposure, the animals were killed and major organs were dissected and subjected to histopathological analysis. As described in more detail by an accompanying publication, the highest internal radiation dose was observed in the digestive system of the rats, followed by the lungs. It was found that the number of mitotic cells increased in the small intestine on day 3 after 56Mn and 60Co exposure, and this change persisted only in 56Mn-exposed animals. Lung tissue was severely damaged only by exposure to 56Mn, despite a rather low radiation dose (less than 0.1 Gy). These data suggest that internal exposure to 56Mn has a significant biological impact on the lungs and small intestine.
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Affiliation(s)
- Kazuko Shichijo
- Nagasaki University, 1-12-4, Sakamoto, Nagasaki, 852-8523, Japan
| | - Nariaki Fujimoto
- Hiroshima University, 1-2-3, Kasumi, Minami-ku, Hiroshima,, 734-8553, Japan.
| | - Darkhan Uzbekov
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Ynkar Kairkhanova
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Aisulu Saimova
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Nailya Chaizhunusova
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Nurlan Sayakenov
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Dariya Shabdarbaeva
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Nurlan Aukenov
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Almas Azimkhanov
- National Nuclear Center of the Republic of Kazakhstan, Krasnoarmeyskaya Str., 2, Build 54 B, Kurchatov, 071100, Kazakhstan
| | - Alexander Kolbayenkov
- National Nuclear Center of the Republic of Kazakhstan, Krasnoarmeyskaya Str., 2, Build 54 B, Kurchatov, 071100, Kazakhstan
| | | | - Daisuke Niino
- Nagasaki University, 1-12-4, Sakamoto, Nagasaki, 852-8523, Japan
| | | | - Kassym Zhumadilov
- L.N. Gumilyov Eurasian National University, Munaitpasova Str.,13, Astana, 010008, Kazakhstan
| | - Valeriy Stepanenko
- A. Tsyb Medical Radiological Research Center, National Medical Research Radiological Center, Ministry of Health of Russian Federation, Koroleva Str. 4, Obninsk, Kaluga region, 249036, Russia
| | - Masao Tomonaga
- Nagasaki University, 1-12-4, Sakamoto, Nagasaki, 852-8523, Japan
| | - Tolebay Rakhypbekov
- Semey State Medical University, Republic of Kazakhstan, Abay Str., 103, Semey, 071400, Kazakhstan
| | - Masaharu Hoshi
- Hiroshima University, 1-2-3, Kasumi, Minami-ku, Hiroshima,, 734-8553, Japan
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263
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Liu Y, Mostafaei F, Sowers D, Hsieh M, Zheng W, Nie LH. Customized compact neutron activation analysis system to quantify manganese (Mn) in bone in vivo. Physiol Meas 2017; 38:452-465. [PMID: 28060775 PMCID: PMC5992599 DOI: 10.1088/1361-6579/aa577b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE In the US alone, millions of workers, including over 300 000 welders, are at high risk of occupational manganese (Mn) exposure. Those who have been chronically exposed to excessive amount of Mn can develop severe neurological disorders similar, but not identical, to the idiopathic Parkinson's disease. One challenge of identifing the health effects of Mn exposure is to find a reliable biomarker for exposure assessment, especially for long-term cumulative exposure. APPROACH Mn's long biological half-life as well as its relatively high concentration in bone makes bone Mn (BnMn) a potentially valuable biomarker for Mn exposure. Our group has been working on the development of a deuterium-deuterium (D-D)-based neutron generator to quantify Mn in bone in vivo. Main results and significance: In this paper, we report the latest advancements in our system. With a customized hand irradiation assembly, a fully characterized high purity germanium (HPGe) detector system, and an acceptable hand dose of 36 mSv, a detection limit of 0.64 µg Mn/g bone (ppm) has been achieved.
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Affiliation(s)
- Yingzi Liu
- School of Health Sciences, Purdue University, West Lafayette, United States of America
| | - Farshad Mostafaei
- School of Health Sciences, Purdue University, West Lafayette, United States of America
| | - Daniel Sowers
- School of Health Sciences, Purdue University, West Lafayette, United States of America
| | - Mindy Hsieh
- School of Health Sciences, Purdue University, West Lafayette, United States of America
| | - Wei Zheng
- School of Health Sciences, Purdue University, West Lafayette, United States of America
| | - Linda H Nie
- School of Health Sciences, Purdue University, West Lafayette, United States of America
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264
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Fonslet J, Tietze S, Jensen AI, Graves SA, Severin GW. Optimized procedures for manganese-52: Production, separation and radiolabeling. Appl Radiat Isot 2017; 121:38-43. [DOI: 10.1016/j.apradiso.2016.11.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/16/2016] [Accepted: 11/25/2016] [Indexed: 12/21/2022]
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265
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Kang W, Rusinek C, Bange A, Haynes E, Heineman WR, Papautsky I. Determination of manganese by cathodic stripping voltammetry on a microfabricated platinum thin-film electrode. ELECTROANAL 2017; 29:686-695. [PMID: 28983182 PMCID: PMC5624726 DOI: 10.1002/elan.201600679] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 12/27/2016] [Indexed: 11/07/2022]
Abstract
In this work, we report on the determination of trace manganese (Mn) using cathodic stripping voltammetry (CSV) using a microfabricated sensor with a Pt thin-film working electrode. While an essential trace metal for human health, prolonged exposure to Mn tends to gradually impair our neurological system. The potential sources of Mn exposure make it necessary to monitor the concentration in various sample matrices. Previous work by us and others suggested CSV as an effective method for measuring trace Mn. The analytical performance metrics were characterized and optimized, leading to a calculated limit of detection (LOD) of 16.3 nM (0.9 ppb) in pH 5.5, 0.2 M acetate buffer. Further, we successfully validated Mn determination in surface water with ~90% accuracy and >97% precision as compared with ICP-MS "gold standard" measurement. Ultimately, with stable, accurate and precise electrochemical performance, this Pt sensor permits rapid monitoring of Mn in environmental samples, and could potentially be used for point-of-use measurements if coupled with portable instrumentation.
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Affiliation(s)
- Wenjing Kang
- Department of Electrical Engineering and Computing Systems, University of Cincinnati, Cincinnati, OH 45221-0030
| | - Cory Rusinek
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221-0172
| | - Adam Bange
- Department of Chemistry, Xavier University, Cincinnati, OH 45207-4221
| | - Erin Haynes
- Department of Environmental Health, University of Cincinnati, Cincinnati, OH 45267-0056
| | - William R. Heineman
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221-0172
| | - Ian Papautsky
- Department of Bioengineering, University of Illinois at Chicago, Chicago, IL 60607
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266
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Lao Y, Dion LA, Gilbert G, Bouchard MF, Rocha G, Wang Y, Leporé N, Saint-Amour D. Mapping the basal ganglia alterations in children chronically exposed to manganese. Sci Rep 2017; 7:41804. [PMID: 28155922 PMCID: PMC5290534 DOI: 10.1038/srep41804] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 12/30/2016] [Indexed: 01/24/2023] Open
Abstract
Chronic manganese (Mn) exposure is associated with neuromotor and neurocognitive deficits, but the exact mechanism of Mn neurotoxicity is still unclear. With the advent of magnetic resonance imaging (MRI), in-vivo analysis of brain structures has become possible. Among different sub-cortical structures, the basal ganglia (BG) has been investigated as a putative anatomical biomarker in MR-based studies of Mn toxicity. However, previous investigations have yielded inconsistent results in terms of regional MR signal intensity changes. These discrepancies may be due to the subtlety of brain alterations caused by Mn toxicity, coupled to analysis techniques that lack the requisite detection power. Here, based on brain MRI, we apply a 3D surface-based morphometry method on 3 bilateral basal ganglia structures in school-age children chronically exposed to Mn through drinking water to investigate the effect of Mn exposure on brain anatomy. Our method successfully pinpointed significant enlargement of many areas of the basal ganglia structures, preferentially affecting the putamen. Moreover, these areas showed significant correlations with fine motor performance, indicating a possible link between altered basal ganglia neurodevelopment and declined motor performance in high Mn exposed children.
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Affiliation(s)
- Yi Lao
- CIBORG laboratory, Department of Radiology, Children's Hospital Los Angeles, Los Angeles CA, USA.,Department of Biomedical Engineering, University of Southern California, Los Angeles CA, USA
| | - Laurie-Anne Dion
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada
| | - Guillaume Gilbert
- Department of radiology, Université de Montréal, Montréal, QC, Canada.,MR Clinical Science, Philips Healthcare, Montreal, Quebec, Canada
| | - Maryse F Bouchard
- Sainte-Justine Hospital Research Centre and Department of Occupational and Environmental Health, Université de Montréal, Montréal, QC, Canada
| | - Gabriel Rocha
- Department of Biomedical Engineering, University of Southern California, Los Angeles CA, USA
| | - Yalin Wang
- School of Computing, Informatics, Decision Systems and Engineering, Arizona State University, Tempe, Arizona, USA
| | - Natasha Leporé
- CIBORG laboratory, Department of Radiology, Children's Hospital Los Angeles, Los Angeles CA, USA.,Department of Biomedical Engineering, University of Southern California, Los Angeles CA, USA
| | - Dave Saint-Amour
- Department of Psychology, Université du Québec à Montréal, Montréal, QC, Canada
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267
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Zhang CJ, Valic MS, Chen J, Zheng G. In Vivo Potential of Manganese Chelated Porphysomes as MRI Contrast Agents. ACTA ACUST UNITED AC 2017. [DOI: 10.17975/sfj-2017-007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Porphysome nanoparticles are composed of porphyrin-conjugated lipids. The attachment of the porphyrin moiety to each phospholipid confers novel properties to the liposome-like nanoparticle, allowing it to perform a variety of diagnostic and therapeutic applications. The metal chelating properties of porphyrin can be used to bind manganese (Mn), transforming the porphysome into a contrast agent for magnetic resonance imaging (MRI). Previous work has extensively characterized the properties of the Mn-porphysome. Herein, we build upon that work by demonstrating the bio-interactions of Mn-porphysomes in vitro to validate their study in vivo. Particle stability in serum was inferred from fluorescence quenching efficiency, and tolerability to cells was measured using an MTT assay. Mn-porphysomes remained >80% quenched after 14H and showed no toxicity to cells at concentrations below 125 mM. These preliminary results suggest that the porphysome may be used to enhance MRI contrast in vivo.
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Affiliation(s)
| | - Michael S. Valic
- Institute of Biomaterials and Biomedical Engineering, University of Toronto
| | - Juan Chen
- Techna Institute for the Advancement of Technology for Health, University Health Network
| | - Gang Zheng
- Department of Medical Biophysics, University of Toronto
- Institute of Biomaterials and Biomedical Engineering, University of Toronto
- Techna Institute for the Advancement of Technology for Health, University Health Network
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268
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Smith MR, Fernandes J, Go YM, Jones DP. Redox dynamics of manganese as a mitochondrial life-death switch. Biochem Biophys Res Commun 2017; 482:388-398. [PMID: 28212723 PMCID: PMC5382988 DOI: 10.1016/j.bbrc.2016.10.126] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 12/16/2022]
Abstract
Sten Orrenius, M.D., Ph.D., pioneered many areas of cellular and molecular toxicology and made seminal contributions to our knowledge of oxidative stress and glutathione (GSH) metabolism, organellar functions and Ca+2-dependent mechanisms of cell death, and mechanisms of apoptosis. On the occasion of his 80th birthday, we summarize current knowledge on redox biology of manganese (Mn) and its role in mechanisms of cell death. Mn is found in all organisms and has critical roles in cell survival and death mechanisms by regulating Mn-containing enzymes such as manganese superoxide dismutase (SOD2) or affecting expression and activity of caspases. Occupational exposures to Mn cause "manganism", a Parkinson's disease-like condition of neurotoxicity, and experimental studies show that Mn exposure leads to accumulation of Mn in the brain, especially in mitochondria, and neuronal cell death occurs with features of an apoptotic mechanism. Interesting questions are why a ubiquitous metal that is essential for mitochondrial function would accumulate to excessive levels, cause increased H2O2 production and lead to cell death. Is this due to the interactions of Mn with other essential metals, such as iron, or with toxic metals, such as cadmium? Why is the Mn loading in the human brain so variable, and why is there such a narrow window between dietary adequacy and toxicity? Are non-neuronal tissues similarly vulnerable to insufficiency and excess, yet not characterized? We conclude that Mn is an important component of the redox interface between an organism and its environment and warrants detailed studies to understand the role of Mn as a mitochondrial life-death switch.
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Affiliation(s)
- Matthew Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Jolyn Fernandes
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA.
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269
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Ramoju SP, Mattison DR, Milton B, McGough D, Shilnikova N, Clewell HJ, Yoon M, Taylor MD, Krewski D, Andersen ME. The application of PBPK models in estimating human brain tissue manganese concentrations. Neurotoxicology 2017; 58:226-237. [PMID: 27989617 DOI: 10.1016/j.neuro.2016.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 12/01/2016] [Accepted: 12/01/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Siva P Ramoju
- Risk Sciences International, 55 Metcalfe Street, Suite 700, K1P 6L5, Ottawa, Canada.
| | - Donald R Mattison
- Risk Sciences International, 55 Metcalfe Street, Suite 700, K1P 6L5, Ottawa, Canada; Samuel R. McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, 850 Peter Morand Crescent, Room 119, University of Ottawa, Ottawa, K1G 3Z7, Canada
| | - Brittany Milton
- Risk Sciences International, 55 Metcalfe Street, Suite 700, K1P 6L5, Ottawa, Canada
| | - Doreen McGough
- International Manganese Institute, 17 rue Duphot, 75001 Paris, France
| | - Natalia Shilnikova
- Risk Sciences International, 55 Metcalfe Street, Suite 700, K1P 6L5, Ottawa, Canada; Samuel R. McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, 850 Peter Morand Crescent, Room 119, University of Ottawa, Ottawa, K1G 3Z7, Canada
| | - Harvey J Clewell
- ScitoVation, 6 Davis Drive, PO Box 110566, Research Triangle Park, NC 27709,United States
| | - Miyoung Yoon
- ScitoVation, 6 Davis Drive, PO Box 110566, Research Triangle Park, NC 27709,United States
| | - Michael D Taylor
- Nickel Producers Environmental Research Association (NiPERA), 2525 Meridian Parkway, Suite 240, Durham, NC 27713, United States
| | - Daniel Krewski
- Risk Sciences International, 55 Metcalfe Street, Suite 700, K1P 6L5, Ottawa, Canada; Samuel R. McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, 850 Peter Morand Crescent, Room 119, University of Ottawa, Ottawa, K1G 3Z7, Canada
| | - Melvin E Andersen
- ScitoVation, 6 Davis Drive, PO Box 110566, Research Triangle Park, NC 27709,United States
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270
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Kuzmanović M, Božanić DK, Milivojević D, Ćulafić DM, Stanković S, Ballesteros C, Gonzalez-Benito J. Sodium-alginate biopolymer as a template for the synthesis of nontoxic red emitting Mn2+-doped CdS nanoparticles. RSC Adv 2017. [DOI: 10.1039/c7ra11011a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural and optical characteristics of manganese doped cadmium sulfide nanoparticles prepared by in situ chemical synthesis using biocompatible Na-alginate biopolymer as a template is reported.
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Affiliation(s)
- M. Kuzmanović
- Department of Material Science and Engineering
- Faculty of Engineering and Architecture
- Ghent University
- Belgium
- Department of Materials Science and Engineering and Chemical Engineering
| | - D. K. Božanić
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
| | - D. Milivojević
- University of Belgrade
- Vinča Institute of Nuclear Sciences
- 11001 Belgrade
- Serbia
| | - D. Mitić Ćulafić
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - S. Stanković
- University of Belgrade
- Faculty of Biology
- Center for Genotoxicology and Ecogenotoxicology
- 11001 Belgrade
- Serbia
| | - C. Ballesteros
- Department of Physics
- Universidad Carlos III de Madrid
- Avenida de la Universidad 30
- 28911 Leganés (Madrid)
- Spain
| | - J. Gonzalez-Benito
- Department of Materials Science and Engineering and Chemical Engineering
- IQMAAB
- Universidad Carlos III de Madrid
- 28911 Leganés (Madrid)
- Spain
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271
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Gawlik M, Gawlik MB, Smaga I, Filip M. Manganese neurotoxicity and protective effects of resveratrol and quercetin in preclinical research. Pharmacol Rep 2016; 69:322-330. [PMID: 28183032 DOI: 10.1016/j.pharep.2016.11.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/17/2016] [Accepted: 11/28/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Exposure to Mn results in a neurological syndrome known as manganism. METHODS We examined how 4-week Mn exposure (20mg/kg MnCl2po, 5days/week) induces neurotoxic effects in rats. Oxidized-to-reduced glutathione ratio (GSSG/GSH), malondialdehyde (MDA), superoxide dismutase (SOD) activity, catalase (CAT) activity, vitamin E content and caspase-3 activity were measured in several rat brain structures. Further, we examined protective effects of the polyphenols: resveratrol (R) or quercetin (QCT) against Mn-induced neurotoxicity. RESULTS After exposure to Mn, we found a rise in GSSG/GSH ratio and a reduction in SOD activity in the rat striatum (STR), while in the nucleus accumbens (NAC) decreases in alpha-tocopherol content and in SOD activity were noted. In the frontal cortex (FCX), an enhancement in GSSG/GSH ratio and a reduction in SOD and CAT activities were observed. In the cerebellum (CER), a significant increase in the caspase-3 activity paralleled a rise in the GSSG/GSH ratio and a diminution of SOD activity. In the rat hippocampus (HIP), Mn evoked an enhancement in GSSG/GSH ratio. There were no changes in the MDA levels. Pretreatment with R and QCT protected against the Mn-induced (i) enhancement in GSSG/GSH ratio in the STR, (ii) decreases in the NAC alpha-tocopherol content and (iii) reduction in SOD activity in FCX, NAC and CER. CONCLUSION Repeated Mn administration induces toxic effects in several rat brain structures and treatment with R and QCT may be a potential therapeutic strategy to attenuate the metal neurotoxicity.
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Affiliation(s)
- Maciej Gawlik
- Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland.
| | - Małgorzata B Gawlik
- Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Irena Smaga
- Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Małgorzata Filip
- Department of Toxicology, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland; Institute of Pharmacology, Polish Academy of Sciences, Laboratory of Drug Addiction Pharmacology, Kraków, Poland
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272
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Gálosi R, Szalay C, Aradi M, Perlaki G, Pál J, Steier R, Lénárd L, Karádi Z. Identifying non-toxic doses of manganese for manganese-enhanced magnetic resonance imaging to map brain areas activated by operant behavior in trained rats. Magn Reson Imaging 2016; 37:122-133. [PMID: 27889621 DOI: 10.1016/j.mri.2016.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
Manganese-enhanced magnetic resonance imaging (MEMRI) offers unique advantages such as studying brain activation in freely moving rats, but its usefulness has not been previously evaluated during operant behavior training. Manganese in a form of MnCl2, at a dose of 20mg/kg, was intraperitoneally infused. The administration was repeated and separated by 24h to reach the dose of 40mg/kg or 60mg/kg, respectively. Hepatotoxicity of the MnCl2 was evaluated by determining serum aspartate aminotransferase, alanine aminotransferase, total bilirubin, albumin and protein levels. Neurological examination was also carried out. The animals were tested in visual cue discriminated operant task. Imaging was performed using a 3T clinical MR scanner. T1 values were determined before and after MnCl2 administrations. Manganese-enhanced images of each animal were subtracted from their baseline images to calculate decrease in the T1 value (ΔT1) voxel by voxel. The subtracted T1 maps of trained animals performing visual cue discriminated operant task, and those of naive rats were compared. The dose of 60mg/kg MnCl2 showed hepatotoxic effect, but even these animals did not exhibit neurological symptoms. The dose of 20 and 40mg/kg MnCl2 increased the number of omissions and did not affect the accuracy of performing the visual cue discriminated operant task. Using the accumulated dose of 40mg/kg, voxels with a significant enhanced ΔT1 value were detected in the following brain areas of the visual cue discriminated operant behavior performed animals compared to those in the controls: the visual, somatosensory, motor and premotor cortices, the insula, cingulate, ectorhinal, entorhinal, perirhinal and piriform cortices, hippocampus, amygdala with amygdalohippocampal areas, dorsal striatum, nucleus accumbens core, substantia nigra, and retrorubral field. In conclusion, the MEMRI proved to be a reliable method to accomplish brain activity mapping in correlation with the operant behavior of freely moving rodents.
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Affiliation(s)
- Rita Gálosi
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary.
| | - Csaba Szalay
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary.
| | | | - Gábor Perlaki
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary; Pécs Diagnostic Center, Pécs, Hungary
| | - József Pál
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary
| | - Roy Steier
- Neurosurgery Clinic, Medical School of University of Pécs, Pécs, Hungary.
| | - László Lénárd
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary; Molecular Neuroendocrinology and Neurophysiology Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - Zoltán Karádi
- Institute of Physiology, Medical School of University of Pécs, Pécs, Hungary; Molecular Neuroendocrinology and Neurophysiology Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary
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273
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"Manganese-induced neurotoxicity: a review of its behavioral consequences and neuroprotective strategies". BMC Pharmacol Toxicol 2016; 17:57. [PMID: 27814772 PMCID: PMC5097420 DOI: 10.1186/s40360-016-0099-0] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 10/19/2016] [Indexed: 01/20/2023] Open
Abstract
Manganese (Mn) is an essential heavy metal. However, Mn’s nutritional aspects are paralleled by its role as a neurotoxicant upon excessive exposure. In this review, we covered recent advances in identifying mechanisms of Mn uptake and its molecular actions in the brain as well as promising neuroprotective strategies. The authors focused on reporting findings regarding Mn transport mechanisms, Mn effects on cholinergic system, behavioral alterations induced by Mn exposure and studies of neuroprotective strategies against Mn intoxication. We report that exposure to Mn may arise from environmental sources, occupational settings, food, total parenteral nutrition (TPN), methcathinone drug abuse or even genetic factors, such as mutation in the transporter SLC30A10. Accumulation of Mn occurs mainly in the basal ganglia and leads to a syndrome called manganism, whose symptoms of cognitive dysfunction and motor impairment resemble Parkinson’s disease (PD). Various neurotransmitter systems may be impaired due to Mn, especially dopaminergic, but also cholinergic and GABAergic. Several proteins have been identified to transport Mn, including divalent metal tranporter-1 (DMT-1), SLC30A10, transferrin and ferroportin and allow its accumulation in the central nervous system. Parallel to identification of Mn neurotoxic properties, neuroprotective strategies have been reported, and these include endogenous antioxidants (for instance, vitamin E), plant extracts (complex mixtures containing polyphenols and non-characterized components), iron chelating agents, precursors of glutathione (GSH), and synthetic compounds that can experimentally afford protection against Mn-induced neurotoxicity.
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274
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Iron(III)-Based Magnetic Resonance–Imageable Liposomal T1 Contrast Agent for Monitoring Temperature-Induced Image-Guided Drug Delivery. Invest Radiol 2016; 51:735-745. [DOI: 10.1097/rli.0000000000000297] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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275
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Bowler RM, Adams SW, Wright CW, Kim Y, Booty A, Colledge M, Gocheva VV, Lobdell DT. Medication use associated with exposure to manganese in two Ohio towns. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2016; 26:483-96. [PMID: 27295281 PMCID: PMC5583632 DOI: 10.1080/09603123.2016.1194381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 04/08/2016] [Indexed: 06/06/2023]
Abstract
This report describes the use of medications as a proxy when medical record reviews are unavailable, to study the health effects of residents environmentally exposed to air-manganese (n = 185) compared to unexposed residents (n = 90). Participants' current medication lists and medication questionnaire responses were collected in clinical interviews and categorized into 13 domains. Exposed participants reported fewer hours of sleep than controls (6.6 vs. 7.0). The exposed used significantly more medications than unexposed participants (82.2 % vs. 67.8 %) and, when adjusting for age, education, and personal income, also for pain (aOR = 2.40) and hypothyroidism (aOR = 7.03). Exposed participants with higher air-Mn concentrations, monitored for 10 years by the U.S. Environmental Protection Agency, were 1.5 times more likely to take pain medications. The exposed participants take significantly more medications than unexposed participants in the categories of hypothyroidism, pain, supplements, and total medications.
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Affiliation(s)
- Rosemarie M Bowler
- a Department of Psychology , San Francisco State University , San Francisco , CA , USA
| | - Shane W Adams
- a Department of Psychology , San Francisco State University , San Francisco , CA , USA
| | - Chris W Wright
- a Department of Psychology , San Francisco State University , San Francisco , CA , USA
| | - Yangho Kim
- b Department of Occupational and Environmental Medicine , Ulsan University Hospital, University of Ulsan College of Medicine , Ulsan , South Korea
| | - Andrew Booty
- c Department of Psychiatry , University of California San Francisco , San Francisco , CA , USA
| | | | - Vihra V Gocheva
- a Department of Psychology , San Francisco State University , San Francisco , CA , USA
| | - Danelle T Lobdell
- e National Health and Environmental Effects Research Laboratory , U.S. EPA , Research Triangle Park , NC , USA
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276
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Starsich FHL, Sotiriou GA, Wurnig MC, Eberhardt C, Hirt AM, Boss A, Pratsinis SE. Silica-Coated Nonstoichiometric Nano Zn-Ferrites for Magnetic Resonance Imaging and Hyperthermia Treatment. Adv Healthc Mater 2016; 5:2698-2706. [PMID: 27592719 DOI: 10.1002/adhm.201600725] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Indexed: 01/25/2023]
Abstract
Large-scale and reproducible synthesis of nanomaterials is highly sought out for successful translation into clinics. Flame aerosol technology with its proven capacity to manufacture high purity materials (e.g., light guides) up to kg h-1 is explored here for the preparation of highly magnetic, nonstoichiometric Zn-ferrite (Zn0.4 Fe2.6 O4 ) nanoparticles coated in situ with a nanothin SiO2 layer. The focus is on their suitability as magnetic multifunctional theranostic agents analyzing their T2 contrast enhancing capability for magnetic resonance imaging (MRI) and their magnetic hyperthermia performance. The primary particle size is closely controlled from 5 to 35 nm evaluating its impact on magnetic properties, MRI relaxivity, and magnetic heating performance. Most importantly, the addition of Zn in the flame precursor solution facilitates the growth of spinel Zn-ferrite crystals that exhibit superior magnetic properties over iron oxides typically made in flames. These properties result in strong MRI T2 contrast agents as shown on a 4.7 T small animal MRI scanner and lead to a more efficient heating with alternating magnetic fields. Also, by injecting Zn0.4 Fe2.6 O4 nanoparticle suspensions into pork tissue, MR-images are acquired at clinically relevant concentrations. Furthermore, the nanothin SiO2 shell facilitates functionalization with polymers, which improves the biocompatibility of the theranostic system.
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Affiliation(s)
- Fabian H. L. Starsich
- Particle Technology Laboratory; Institute of Process Engineering; Department of Mechanical and Process Engineering; ETH Zürich; Sonneggstrasse 3 CH-8092 Zürich Switzerland
| | - Georgios A. Sotiriou
- Drug Formulation & Delivery; Institute of Pharmaceutical Sciences; Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 3 CH-8093 Zürich Switzerland
- Department of Microbiology, Tumor and Cell Biology; Karolinska Institutet; Stockholm 17177 Sweden
| | - Moritz C. Wurnig
- Institute of Diagnostic and Interventional Radiology; University Hospital Zürich; Rämistrasse 100 CH-8091 Zürich Switzerland
| | - Christian Eberhardt
- Institute of Diagnostic and Interventional Radiology; University Hospital Zürich; Rämistrasse 100 CH-8091 Zürich Switzerland
| | - Ann M. Hirt
- Institute of Geophysics; ETH Zürich; Sonneggstrasse 5 CH-8092 Zürich Switzerland
| | - Andreas Boss
- Institute of Diagnostic and Interventional Radiology; University Hospital Zürich; Rämistrasse 100 CH-8091 Zürich Switzerland
| | - Sotiris E. Pratsinis
- Particle Technology Laboratory; Institute of Process Engineering; Department of Mechanical and Process Engineering; ETH Zürich; Sonneggstrasse 3 CH-8092 Zürich Switzerland
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277
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Jeon TY, Kim JH, Im GH, Kim JH, Yang J, Yoo SY, Lee JH. Hollow manganese oxide nanoparticle-enhanced MRI of hypoxic-ischaemic brain injury in the neonatal rat. Br J Radiol 2016; 89:20150806. [PMID: 27653465 DOI: 10.1259/bjr.20150806] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To determine the utility of hollow manganese oxide nanoparticle (HMON)-enhanced MRI in depicting and monitoring apoptotic area following hypoxic-ischaemic injury in a neonatal rat brain and to evaluate the longitudinal evolution of hypoxic-ischaemic brain injury (HII) up to 21 days. METHODS The institutional animal care and use committee approval was obtained. The Rice-Vannucci model of HII was used in 7-day-old rat pups (n = 17). MRI was performed 1, 3, 7, 14 and 21 days after HII with intraperitoneal injection of HMON. Relative contrast values in the injured hemisphere and mean apparent diffusion coefficient values were calculated at each time point. Apoptosis and reactive astrogliosis were detected by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end-labelling (TUNEL) and glial fibrillary acidic protein staining, and the distribution and intensity of immunohistochemical staining were directly compared with those of HMON enhancement on MRI. RESULTS The dorsolateral thalamus, hippocampus and remaining cortex of the injured hemisphere showed HMON enhancement from 3 to 21 days after HII. The mean relative contrast values in the dorsolateral thalamus showed an increase from a negative value at 1 day to 16.5 ± 4.8% at 21 days. The apoptotic cells and reactive astrocytes were observed on immunohistochemical staining from 1 to 21 days after HII. The accumulation of apoptotic cells regionally matched with the areas of HMON enhancement, while that of reactive astrocytes did not. CONCLUSION The areas of HMON enhancement showed best spatial agreement with those of apoptosis on TUNEL staining. Both HMON enhancement and TUNEL-positive cells were observed up to 21 days after HII. Advances in knowledge: The strength of our study is the visualization of apoptotic area in vivo using HMON-enhanced MRI, and we also showed that HII has a prolonged evolution lasting for several weeks.
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Affiliation(s)
- Tae Yeon Jeon
- 1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji Hye Kim
- 1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Geun Ho Im
- 2 Department of Radiology and Center for Molecular and Cellular Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae-Hun Kim
- 2 Department of Radiology and Center for Molecular and Cellular Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jehoon Yang
- 2 Department of Radiology and Center for Molecular and Cellular Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - So-Young Yoo
- 1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jung Hee Lee
- 2 Department of Radiology and Center for Molecular and Cellular Imaging, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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278
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Vigeh M, Nishioka E, Yokoyama K, Ohtani K, Matsukawa T. Increased prenatal blood manganese may induce gestational blood pressure. Hypertens Pregnancy 2016; 35:583-592. [PMID: 27647153 DOI: 10.1080/10641955.2016.1219364] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Pregnancy hypertension is the most common gestational complication and poses a critical risk for mother and fetus. Whether environmental factors may play an important role in disease occurrence is not fully determined. METHODS To investigate the effects of prenatal manganese (Mn) exposure on gestational blood pressure, 386 women were examined. RESULTS Early pregnancy blood Mn was significantly (p < 0.05) correlated with blood pressure through gestation. A significant association between odds of pre-hypertension with blood Mn was shown (OR:1.150, 95% CI:1.052-1.258). CONCLUSION The current study results might suggest the blood Mn level during early stage of pregnancy as a potential risk factor for increasing the risk of gestational blood pressure.
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Affiliation(s)
- Mohsen Vigeh
- a Department of Occupational Epidemiology , National Institute of Occupational Safety and Health , Kawasaki , Japan.,b Department of Epidemiology and Environmental Health , Juntendo University Faculty of Medicine , Tokyo , Japan
| | - Emiko Nishioka
- b Department of Epidemiology and Environmental Health , Juntendo University Faculty of Medicine , Tokyo , Japan
| | - Kazuhito Yokoyama
- b Department of Epidemiology and Environmental Health , Juntendo University Faculty of Medicine , Tokyo , Japan
| | - Katsumi Ohtani
- a Department of Occupational Epidemiology , National Institute of Occupational Safety and Health , Kawasaki , Japan
| | - Takehisa Matsukawa
- b Department of Epidemiology and Environmental Health , Juntendo University Faculty of Medicine , Tokyo , Japan
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279
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Utembe W, Faustman EM, Matatiele P, Gulumian M. Hazards identified and the need for health risk assessment in the South African mining industry. Hum Exp Toxicol 2016; 34:1212-21. [PMID: 26614808 DOI: 10.1177/0960327115600370] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Although mining plays a prominent role in the economy of South Africa, it is associated with many chemical hazards. Exposure to dust from mining can lead to many pathological effects depending on mineralogical composition, size, shape and levels and duration of exposure. Mining and processing of minerals also result in occupational exposure to toxic substances such as platinum, chromium, vanadium, manganese, mercury, cyanide and diesel particulate. South Africa has set occupational exposure limits (OELs) for some hazards, but mine workers are still at a risk. Since the hazard posed by a mineral depends on its physiochemical properties, it is recommended that South Africa should not simply adopt OELs from other countries but rather set her own standards based on local toxicity studies. The limits should take into account the issue of mixtures to which workers could be exposed as well as the health status of the workers. The mining industry is also a source of contamination of the environment, due inter alia to the large areas of tailings dams and dumps left behind. Therefore, there is need to develop guidelines for safe land-uses of contaminated lands after mine closure.
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Affiliation(s)
- W Utembe
- Toxicology Section, National Institute for Occupational Health, Johannesburg, South Africa Department of Physics and Biochemical Sciences, Malawi Polytechnic, University of Malawi, Blantyre, Malawi
| | - E M Faustman
- Institute for Risk Analysis and Risk Communication, University of Washington, Seattle, WA, USA
| | - P Matatiele
- Toxicology Section, National Institute for Occupational Health, Johannesburg, South Africa
| | - M Gulumian
- Toxicology Section, National Institute for Occupational Health, Johannesburg, South Africa Haematology and Molecular Medicine, School of Pathology, University of Witwatersrand, Johannesburg, South Africa
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280
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Sonet J, Bulteau AL, Chavatte L, García-Barrera T, Gómez-Ariza JL, Callejón-Leblic B, Nischwitz V, Theiner S, Galvez L, Koellensperger G, Keppler BK, Roman M, Barbante C, Neth K, Bornhorst J, Michalke B. Biomedical and Pharmaceutical Applications. Metallomics 2016. [DOI: 10.1002/9783527694907.ch13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan Sonet
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Anne-Laure Bulteau
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Laurent Chavatte
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Tamara García-Barrera
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - José Luis Gómez-Ariza
- University of Huelva, Research Center of Health and Environment (CYSMA); Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Belén Callejón-Leblic
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Volker Nischwitz
- Forschungszentrum Jülich; Central Institute for Engineering, Electronics and Analytics; Analytics (ZEA-3), Wilhelm-Johnen-Straße 52428 Jülich Germany
| | - Sarah Theiner
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Luis Galvez
- University of Vienna, Research Platform ‘Translational Cancer Therapy Research’; Waehringer Strasse 42 1090 Vienna Austria
| | - Gunda Koellensperger
- University of Vienna, Department of Analytical Chemistry; Waehringer Strasse 38 1090 Vienna Austria
| | - Bernhard K. Keppler
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Marco Roman
- Ca' Foscari University of Venice; Department of Environmental Sciences, Informatics and Statistics (DAIS); Via Torino 155 30172 Venice Italy
| | - Carlo Barbante
- National Research Council; Institute for the Dynamics of Environmental Processes (IDPA-CNR); Via Torino 155 30172 Venice Italy
| | - Katharina Neth
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
| | - Julia Bornhorst
- University of Potsdam; Department of Food Chemistry, Institute of Nutritional Science; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
| | - Bernhard Michalke
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
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281
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Bouabid S, Fifel K, Benazzouz A, Lakhdar-Ghazal N. Consequences of manganese intoxication on the circadian rest-activity rhythms in the rat. Neuroscience 2016; 331:13-23. [DOI: 10.1016/j.neuroscience.2016.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 06/09/2016] [Accepted: 06/09/2016] [Indexed: 11/30/2022]
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282
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Michalke B. Review about the manganese speciation project related to neurodegeneration: An analytical chemistry approach to increase the knowledge about manganese related parkinsonian symptoms. J Trace Elem Med Biol 2016; 37:50-61. [PMID: 27006066 DOI: 10.1016/j.jtemb.2016.03.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/03/2016] [Accepted: 03/06/2016] [Indexed: 12/20/2022]
Abstract
Neurodegenerative diseases get a growing relevance for societies. But yet the complex multi-factorial mechanisms of these diseases are not fully understood, although it is well accepted that metal ions may play a crucial role. Manganese (Mn) is a transition metal which has essential biochemical functions but from occupational exposure scenarios it appeared that Mn can cause severe neurological damage. This "two-faces"-nature of manganese initiated us to start a project on Mn-speciation, since different element species are known to exhibit different impacts on health. A summary about the step-wise developments and findings from our working group was presented during the annual conference of the German trace element society in 2015. This paper summarizes now the contribution to this conference. It is intended to provide a complete picture of the so far evolved puzzle from our studies regarding manganese, manganese speciation and metabolomics as well as Mn-related mechanisms of neural damage. Doing so, the results of the single studies are now summarized in a connected way and thus their interrelationships are demonstrated. In short terms, we found that Mn-exposure leads to an increase of low molecular weight Mn compounds, above all Mn-citrate complex, which gets even enriched across neural barriers (NB). At a Mn serum concentration between 1.5 and 1.9μg/L a carrier switch from Mn-transferrin to Mn-citrate was observed. We concluded that the Mn-citrate complex is that important Mn-carrier to NB which can be found also beyond NB in human cerebrospinal fluid (CSF) or brain of exposed rats. In brain of Mn-exposed rats manganese leads to a decreased iron (Fe) concentration, to a shift from Fe(III) to Fe(II) after long term exposure and thus to a shift toward oxidative stress. This was additionally supported by an increase of markers for oxidative stress, inflammation or lipid peroxidation at increased Mn concentration in brain extracts. Furthermore, glutamate and acetylcholineesterase were elevated and many metabolite concentrations were significantly changed.
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Affiliation(s)
- Bernhard Michalke
- Helmholtz Zentrum München-Deutsches Forschungszentrum für Gesundheit und Umwelt, Research Unit Analytical BioGeoChemistry, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany.
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283
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Peres TV, Parmalee NL, Martinez-Finley EJ, Aschner M. Untangling the Manganese-α-Synuclein Web. Front Neurosci 2016; 10:364. [PMID: 27540354 PMCID: PMC4972813 DOI: 10.3389/fnins.2016.00364] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 07/22/2016] [Indexed: 12/15/2022] Open
Abstract
Neurodegenerative diseases affect a significant portion of the aging population. Several lines of evidence suggest a positive association between environmental exposures, which are common and cumulative in a lifetime, and development of neurodegenerative diseases. Environmental or occupational exposure to manganese (Mn) has been implicated in neurodegeneration due to its ability to induce mitochondrial dysfunction, oxidative stress, and α-synuclein (α-Syn) aggregation. The role of the α-Syn protein vis-a-vis Mn is controversial, as it seemingly plays a duplicitous role in neuroprotection and neurodegeneration. α-Syn has low affinity for Mn, however an indirect interaction cannot be ruled out. In this review we will examine the current knowledge surrounding the interaction of α-Syn and Mn in neurodegenerative process.
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Affiliation(s)
- Tanara Vieira Peres
- Department of Molecular Pharmacology, Albert Einstein College of Medicine Bronx, NY, USA
| | - Nancy L Parmalee
- Department of Molecular Pharmacology, Albert Einstein College of Medicine Bronx, NY, USA
| | | | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine Bronx, NY, USA
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284
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Brunnquell CL, Hernandez R, Graves SA, Smit-Oistad I, Nickles RJ, Cai W, Meyerand ME, Suzuki M. Uptake and retention of manganese contrast agents for PET and MRI in the rodent brain. CONTRAST MEDIA & MOLECULAR IMAGING 2016; 11:371-380. [PMID: 27396476 DOI: 10.1002/cmmi.1701] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 04/28/2016] [Accepted: 05/18/2016] [Indexed: 01/04/2023]
Abstract
Manganese-enhanced magnetic resonance imaging (MRI) is an established neuroimaging method for signal enhancement, tract tracing, and functional studies in rodents. Along with the increasing availability of combined positron emission tomography (PET) and MRI scanners, the recent development of the positron-emitting isotope 52 Mn has prompted interest in the use of Mn2+ as a dual-modality contrast agent. In this work, we characterized and compared the uptake of systemically delivered Mn2+ and radioactive 52 Mn2+ in the rat brain for MRI and PET, respectively. Additionally, we examined the biodistribution of two formulations of 52 Mn2+ in the rat. In MRI, maximum uptake was observed one day following delivery of the highest MnCl2 dose tested (60 mg/kg), with some brain regions showing delayed maximum enhancement 2-4 days following delivery. In PET, we observed low brain uptake after systemic delivery, with a maximum of approximately 0.2% ID/g. We also studied the effect of final formulation vehicle (saline compared with MnCl2 ) on 52 Mn2+ organ biodistribution and brain uptake. We observed that the addition of bulk Mn2+ carrier to 52 Mn2+ in solution resulted in significantly reduced 52 Mn2+ uptake in the majority of organs, including the brain. These results lay the groundwork for further development of 52 Mn PET or dual Mn-enhanced PET-MR neuroimaging in rodents, and indicate several interesting potential applications of 52 Mn PET in other organs and systems. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
| | - Reinier Hernandez
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Stephen A Graves
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Ivy Smit-Oistad
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Robert J Nickles
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Weibo Cai
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA.,Department of Radiology, University of Wisconsin-Madison, Madison, WI, USA
| | - M Elizabeth Meyerand
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA. .,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
| | - Masatoshi Suzuki
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, USA. .,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
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285
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Poulsen SS, Jackson P, Kling K, Knudsen KB, Skaug V, Kyjovska ZO, Thomsen BL, Clausen PA, Atluri R, Berthing T, Bengtson S, Wolff H, Jensen KA, Wallin H, Vogel U. Multi-walled carbon nanotube physicochemical properties predict pulmonary inflammation and genotoxicity. Nanotoxicology 2016; 10:1263-75. [PMID: 27323647 PMCID: PMC5020352 DOI: 10.1080/17435390.2016.1202351] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Lung deposition of multi-walled carbon nanotubes (MWCNT) induces pulmonary toxicity. Commercial MWCNT vary greatly in physicochemical properties and consequently in biological effects. To identify determinants of MWCNT-induced toxicity, we analyzed the effects of pulmonary exposure to 10 commercial MWCNT (supplied in three groups of different dimensions, with one pristine and two/three surface modified in each group). We characterized morphology, chemical composition, surface area and functionalization levels. MWCNT were deposited in lungs of female C57BL/6J mice by intratracheal instillation of 0, 6, 18 or 54 μg/mouse. Pulmonary inflammation (neutrophil influx in bronchoalveolar lavage (BAL)) and genotoxicity were determined on day 1, 28 or 92. Histopathology of the lungs was performed on day 28 and 92. All MWCNT induced similar histological changes. Lymphocytic aggregates were detected for all MWCNT on day 28 and 92. Using adjusted, multiple regression analyses, inflammation and genotoxicity were related to dose, time and physicochemical properties. The specific surface area (BET) was identified as a positive predictor of pulmonary inflammation on all post-exposure days. In addition, length significantly predicted pulmonary inflammation, whereas surface oxidation (–OH and –COOH) was predictor of lowered inflammation on day 28. BET surface area, and therefore diameter, significantly predicted genotoxicity in BAL fluid cells and lung tissue such that lower BET surface area or correspondingly larger diameter was associated with increased genotoxicity. This study provides information on possible toxicity-driving physicochemical properties of MWCNT. The results may contribute to safe-by-design manufacturing of MWCNT, thereby minimizing adverse effects.
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Affiliation(s)
- Sarah S Poulsen
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Petra Jackson
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Kirsten Kling
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Kristina B Knudsen
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Vidar Skaug
- b National Institute of Occupational Health , Oslo , Norway
| | - Zdenka O Kyjovska
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Birthe L Thomsen
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Per Axel Clausen
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Rambabu Atluri
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Trine Berthing
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Stefan Bengtson
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Henrik Wolff
- c Finnish Institute of Occupational Health , Helsinki , Finland
| | - Keld A Jensen
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark
| | - Håkan Wallin
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark .,d Institute of Public Health, Copenhagen University , Copenhagen K , Denmark , and
| | - Ulla Vogel
- a National Research Centre for the Working Environment , Copenhagen Ø , Denmark .,e Department of Micro-and Nanotechnology , Technical University of Denmark , Kgs. Lyngby , Denmark
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286
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Yuan ZX, Chen HB, Li SJ, Huang XW, Mo YH, Luo YN, He SN, Deng XF, Lu GD, Jiang YM. The influence of manganese treatment on the distribution of metal elements in rats and the protection by sodium para-amino salicylic acid. J Trace Elem Med Biol 2016; 36:84-9. [PMID: 27259357 DOI: 10.1016/j.jtemb.2016.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 03/11/2016] [Accepted: 04/08/2016] [Indexed: 12/15/2022]
Abstract
Manganese (Mn) overexposure induced neurological damages, which could be potentially protected by sodium para-aminosalicylic acid (PAS-Na). In this study, we systematically detected the changes of divalent metal elements in most of the organs and analyzed the distribution of the metals in Mn-exposed rats and the protection by PAS-Na. Sprague Dawley (SD) rats received intraperitoneal injections of 15mg/kg MnCl2·4H2O (5d/week for 3 weeks), followed by subcutaneous (back) injections of PAS-Na (100 and 200mg/kg, everyday for 5 weeks). The concentrations of Mn and other metal elements [Iron (Fe), Copper (Cu), Zinc (Zn), Magnesium (Mg), Calcium (Ca)] in major organs (liver, spleen, kidney, thighbone and iliac bone, cerebral cortex, hippocampus and testes) and blood by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). The results showed that Mn overexposure significantly increased Mn in most organs, Fe and Zn in liver, Fe and Mg in blood; however decreased Fe, Cu, Zn, Mg and Ca in cortex, Cu and Zn in kidney, Cu and Mg in iliac bone, and Zn in blood. In contrast, PAS-Na treatment restored most changes particularly in cortex. In conclusion, excessive Mn exposure disturbed the balance of other metal elements but PAS-Na post-treatments could restore these alterations.
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Affiliation(s)
- Zong-Xiang Yuan
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Hai-Bin Chen
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China; Center for Disease Control and Prevention, Nanning, PR China
| | - Shao-Jun Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Xiao-Wei Huang
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Yu-Huan Mo
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Yi-Ni Luo
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Sheng-Nan He
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Xiang-Fa Deng
- Department of Human Anatomy, School of Basic Medicine, Guangxi Medical University, Nanning, Guangxi, PR China
| | - Guo-Dong Lu
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China; The Key Laboratory of High-Incidence Diseases Prevention and Control, Guangxi Medical University, Nanning, PR China.
| | - Yue-Ming Jiang
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, PR China.
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287
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Lu W, Hong H, Cai W. Radio-nanomaterials for biomedical applications: state of the art. EUROPEAN JOURNAL OF NANOMEDICINE 2016; 8:151-170. [PMID: 27482194 PMCID: PMC4963156 DOI: 10.1515/ejnm-2016-0011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The incorporation of radioactive isotope(s) into conventional nanomaterials can bring extra properties which are not possessed by original materials. The resulting radioactive nanomaterials (radio-nanomaterials), with added physical/chemical properties, can be used as important tools for different biomedical applications. In this review, our goal is to provide an up-to-date overview on these applications using radio-nanomaterials. The first section illustrates the utilization of radionanomaterials for understanding of in vivo kinetics of their parent nano-materials. In the second section, we focus on two primary applications of radio-nanomaterials: imaging and therapeutic delivery. With various methods being used to form radio-nanomaterials, they can be used for positron emission tomography (PET), single-photon emission computed tomography (SPECT), and multimodal imaging. Therapeutic isotopes-loading radio-nanomaterials can possess selective killing efficacy of diseased cells (e.g. tumor cells) and can provide promises for certain isotopes which are not able to be used in a conventional manner. The successful and versatile biomedical applications of radio-nanomaterials warrants further investigations of those materials and their optimizations can pave the way to future imaging guidable, personalized treatments in patients.
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Affiliation(s)
- Weifei Lu
- Department of Radiology, University of Michigan - Ann Arbor, MI 48109-2200, USA; and College of Animal Sciences and Veterinary Medicine, Henan Agriculture University, Zhengzhou, Henan 450002, China
| | - Hao Hong
- Department of Radiology, University of Michigan - Ann Arbor, MI 48109-2200, USA, , ,
| | - Weibo Cai
- Department of Radiology and Medical Physics, University of Wisconsin - Madison, WI 53705-2275, USA; and University of Wisconsin Carbone Cancer Center, Madison, WI 53705-2275, USA, , ,
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288
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Baroni S, Colombo Serra S, Fringuello Mingo A, Lux G, Giovenzana GB, Lattuada L. Synthesis and Relaxometric Characterization of a New Mn(II)-EDTA-Deoxycholic Acid Conjugate Complex as a Potential MRI Blood Pool Agent. ChemistrySelect 2016. [DOI: 10.1002/slct.201600349] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- S. Baroni
- Molecular Imaging Center; Department of Molecular Biotechnologies & Health Sciences; Università di Torino; Via Nizza 52 10100 Torino (TO) Italy
| | - Sonia Colombo Serra
- Bracco Imaging SpA; Bracco Research Center; Via Ribes 5 10010 Colleretto Giacosa (TO) Italy
| | - Alberto Fringuello Mingo
- Bracco Imaging SpA; Bracco Research Center; Via Ribes 5 10010 Colleretto Giacosa (TO) Italy
- Dipartimento di Fisica; Università di Torino; Via Pietro Giuria 1 10100 Torino (TO) Italy
| | - G. Lux
- Bracco Imaging SpA; Bracco Research Center; Via Ribes 5 10010 Colleretto Giacosa (TO) Italy
| | - G. B. Giovenzana
- Dipartimento di Scienze del Farmaco; Università degli Studi del Piemonte Orientale “A. Avogadro”; Largo Donegani 2/3 28100 Novara (NO) Italy
| | - L. Lattuada
- Bracco Imaging SpA; Bracco Research Center; Via Ribes 5 10010 Colleretto Giacosa (TO) Italy
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289
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Grygo-Szymanko E, Tobiasz A, Walas S. Speciation analysis and fractionation of manganese: A review. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.09.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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290
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Guilarte TR, Gonzales KK. Manganese-Induced Parkinsonism Is Not Idiopathic Parkinson's Disease: Environmental and Genetic Evidence. Toxicol Sci 2016. [PMID: 26220508 DOI: 10.1093/toxsci/kfv099] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Movement abnormalities caused by chronic manganese (Mn) intoxication clinically resemble but are not identical to those in idiopathic Parkinson's disease. In fact, the most successful parkinsonian drug treatment, the dopamine precursor levodopa, is ineffective in alleviating Mn-induced motor symptoms, implying that parkinsonism in Mn-exposed individuals may not be linked to midbrain dopaminergic neuron cell loss. Over the last decade, supporting evidence from human and nonhuman primates has emerged that Mn-induced parkinsonism partially results from damage to basal ganglia nuclei of the striatal "direct pathway" (ie, the caudate/putamen, internal globus pallidus, and substantia nigra pars reticulata) and a marked inhibition of striatal dopamine release in the absence of nigrostriatal dopamine terminal degeneration. Recent neuroimaging studies have revealed similar findings in a particular group of young drug users intravenously injecting the Mn-containing psychostimulant ephedron and in individuals with inherited mutations of the Mn transporter gene SLC30A10. This review will provide a detailed discussion about the aforementioned studies, followed by a comparison with their rodent analogs and idiopathic parkinsonism. Together, these findings in combination with a limited knowledge about the underlying neuropathology of Mn-induced parkinsonism strongly support the need for a more complete understanding of the neurotoxic effects of Mn on basal ganglia function to uncover the appropriate cellular and molecular therapeutic targets for this disorder.
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Affiliation(s)
- Tomás R Guilarte
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032
| | - Kalynda K Gonzales
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032
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291
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Hsu BYW, Kirby G, Tan A, Seifalian AM, Li X, Wang J. Relaxivity and toxicological properties of manganese oxide nanoparticles for MRI applications. RSC Adv 2016; 6:45462-45474. [PMID: 31156805 DOI: 10.1039/c6ra04421b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Manganese oxide nanoparticles (MONs) have received growing attention as alternative T 1 MRI contrast agents due to the association of commercial gadolinium-based contrast agents with nephrogenic systemic fibrosis. Since the seminal publication first describing the use of MONs as positive T 1 contrast agents, there is an ongoing impetus to develop MONs of higher T 1 signal intensity for better diagnostic efficacy. Indeed, various MON-based nanoprobe designs have been proposed, such as the employment of a mesoporous nanomaterial with MONs evenly dispersed within, or the traditional coating of a biocompatible layer onto the surface of MONs to form a core-shell configuration. Recent advances in this field also propose stimuli-responsive MONs that capitalize on an acidic dissolution or in situ reduction to release Mn2+ ions for a multi-fold increase in MRI contrast. However, the potential nanotoxicity of MONs remains a key obstacle to the clinical translation of MON-based T 1 contrast agents. Due to the wide variety of functionalities and physicochemical properties of MONs, there is also a lack of consensus on the toxicological properties of MONs. In addition, the r 1 relaxivity of MRI contrast agents typically decreases at higher field strength. Hence, it highlights the need to develop MON-based contrast agents with higher relaxivities. In this regard, this article aims to present a thorough review of MONs for MRI applications, with particular emphasis on their relaxivity and toxicological properties. In order to systematically review the current state-of-the-art for the development of MONs for MRI applications, the MON-based T 1 contrast agents are categorized based on the structure of the nanomaterial system. Key parameters that influence the nanotoxicity of MONs are also examined while the absorption, distribution, metabolism and excretion of MON in vivo are evaluated to discern how long the nanoparticles will be present within the body, as well as to predict the organs or tissues in which they distribute.
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Affiliation(s)
- Benedict You Wei Hsu
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore (NUS), Singapore.,Institute of Materials Research and Engineering, Agency for Science Technology and Research (ASTAR), Singapore
| | - Georgia Kirby
- UCL Medical School, University College London (UCL), London, UK.,King's College, University of Cambridge, Cambridge, UK
| | - Aaron Tan
- UCL Medical School, University College London (UCL), London, UK.,Biomaterials & Advanced Drug Delivery Laboratory (BioADD), Stanford University School of Medicine, Stanford University, Stanford, USA
| | - Alexander M Seifalian
- Centre for Nanotechnology & Regenerative Medicine, UCL Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Xu Li
- Institute of Materials Research and Engineering, Agency for Science Technology and Research (ASTAR), Singapore
| | - John Wang
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore (NUS), Singapore.,Department of Materials Science & Engineering, National University of Singapore (NUS), Singapore
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292
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Hearne E, Grund JPC, Van Hout MC, McVeigh J. A scoping review of home-produced heroin and amphetamine-type stimulant substitutes: implications for prevention, treatment, and policy. Harm Reduct J 2016; 13:14. [PMID: 27094257 PMCID: PMC4837500 DOI: 10.1186/s12954-016-0105-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 03/24/2016] [Indexed: 11/23/2022] Open
Abstract
Several home-produced substances such as krokodil and boltushka are prevalent in many Eastern European countries. Anecdotal reports of its use have been circulating in Germany and Norway; however, this has not been confirmed. Its use has also been reported by the media in the USA, although only one confirmed report of its use exists. Home-produced drugs are associated with high levels of morbidity and a number of complex health issues such as the spread of blood borne viruses, gangrene, and internal organ damage. The high incidence of HIV rates amongst people who inject home-produced substances is a public health concern. The resulting physical health consequences of injecting these crude substances are very severe in comparison to heroin or amphetamine acquired in black markets. Due to this fact and the increased mortality associated with these substances, professionals in the area of prevention, treatment, and policy development need to be cognisant of the presentation, harms, and the dangers associated with home-produced substances globally. This scoping review aimed to examine existing literature on the subject of home-produced heroin and amphetamine-type stimulant substitutes. The review discussed the many implications such research may have in the areas of policy and practice. Data were gathered through the use of qualitative secondary resources such as journal articles, reports, reviews, case studies, and media reports. The home production of these substances relies on the utilisation of precursor drugs such as less potent stimulants, tranquillizers, analgesics, and sedatives or natural plant ingredients. The Internet underpins the facilitation of this practice as recipes, and diverted pharmaceutical sales are available widely online, and currently, ease of access to the Internet is evident worldwide. This review highlights the necessity of prevention, education, and also harm reduction related to home-produced drugs and also recommends consistent monitoring of online drug fora, online drug marketplaces, and unregulated pharmacies.
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Affiliation(s)
- Evelyn Hearne
- School of Health Sciences, Waterford Institute of Technology, Waterford, Ireland.
| | - Jean-Paul Cornelius Grund
- Department of Addictology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic.,CVO - Addiction Research Centre, Utrecht, The Netherlands.,Freudenthal Institute for Science and Mathematics Education, Utrecht University, Utrecht, The Netherlands
| | | | - Jim McVeigh
- Centre for Public Health, Liverpool John Moores University, Liverpool, UK
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293
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Zhang HT, Mi L, Wang T, Yuan L, Li XH, Dong LS, Zhao P, Fu JL, Yao BY, Zhou ZC. PINK1/Parkin-mediated mitophagy play a protective role in manganese induced apoptosis in SH-SY5Y cells. Toxicol In Vitro 2016; 34:212-219. [PMID: 27091500 DOI: 10.1016/j.tiv.2016.04.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 04/06/2016] [Accepted: 04/06/2016] [Indexed: 12/14/2022]
Abstract
Manganese (Mn) as an environmental risk factor of Parkinson's disease (PD) is considered to cause manganism. Mitophagy is thought to play a key role in elimination the injured mitochondria. The goal of this paper was to explore whether the PINK1/Parkin-mediated mitophagy is activated and its role in Mn-induced mitochondrial dysfunction and cell death in SH-SY5Y cells. Here, we investigated effects of MnCl2 on ROS generation, mitochondrial membrane potential (MMP/ΔΨm) and apoptosis by FACS and examined PINK1/Parkin-mediated mitophagy by western-blotting and the co-localization of mitochondria and acidic lysosomes. Further, we explore the role of mitophagy in Mn-induced apoptosis by inhibition the mitophagy by knockdown Parkin level. Results show that MnCl2 dose-dependently caused ΔΨm decrease, ROS generation and apoptosis of dopaminergic SH-SY5Y cells. Moreover, Mn could induce mitophagy and PINK1/Parkin-mediated pathway was activated in SH-SY5Y cells. Transient transfection of Parkin siRNA knockdown the expressing level of parkin inhibited Mn-induced mitophagy and aggravated apoptosis of SH-SY5Y cells. In conclusion, our study demonstrated that Mn may induce PINK1/Parkin-mediated mitophagy, which may exert significant neuro-protective effect against Mn-induced dopaminergic neuronal cells apoptosis.
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Affiliation(s)
- Hong-Tao Zhang
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University Health Science Center, Beijing 100191, China
| | - Lan Mi
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Cancer Hospital & Institute, Peking University, Beijing 100142, China
| | - Ting Wang
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; China-US (Henan) Hormel Cancer Institute, Zhengzhou 450003, Henan, China
| | - Lan Yuan
- Medical and Health Analysis Center, Peking University, Beijing 100191, China
| | - Xue-Hui Li
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University Health Science Center, Beijing 100191, China
| | - Li-Sha Dong
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University Health Science Center, Beijing 100191, China
| | - Peng Zhao
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University Health Science Center, Beijing 100191, China
| | - Juan-Ling Fu
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China
| | - Bi-Yun Yao
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University Health Science Center, Beijing 100191, China.
| | - Zong-Can Zhou
- Department of Toxicology, Peking University Health Science Center, Beijing 100191, China
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294
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Rodriguez O, Schaefer ML, Wester B, Lee YC, Boggs N, Conner HA, Merkle AC, Fricke ST, Albanese C, Koliatsos VE. Manganese-Enhanced Magnetic Resonance Imaging as a Diagnostic and Dispositional Tool after Mild-Moderate Blast Traumatic Brain Injury. J Neurotrauma 2016; 33:662-71. [PMID: 26414591 PMCID: PMC4827293 DOI: 10.1089/neu.2015.4002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Traumatic brain injury (TBI) caused by explosive munitions, known as blast TBI, is the signature injury in recent military conflicts in Iraq and Afghanistan. Diagnostic evaluation of TBI, including blast TBI, is based on clinical history, symptoms, and neuropsychological testing, all of which can result in misdiagnosis or underdiagnosis of this condition, particularly in the case of TBI of mild-to-moderate severity. Prognosis is currently determined by TBI severity, recurrence, and type of pathology, and also may be influenced by promptness of clinical intervention when more effective treatments become available. An important task is prevention of repetitive TBI, particularly when the patient is still symptomatic. For these reasons, the establishment of quantitative biological markers can serve to improve diagnosis and preventative or therapeutic management. In this study, we used a shock-tube model of blast TBI to determine whether manganese-enhanced magnetic resonance imaging (MEMRI) can serve as a tool to accurately and quantitatively diagnose mild-to-moderate blast TBI. Mice were subjected to a 30 psig blast and administered a single dose of MnCl2 intraperitoneally. Longitudinal T1-magnetic resonance imaging (MRI) performed at 6, 24, 48, and 72 h and at 14 and 28 days revealed a marked signal enhancement in the brain of mice exposed to blast, compared with sham controls, at nearly all time-points. Interestingly, when mice were protected with a polycarbonate body shield during blast exposure, the marked increase in contrast was prevented. We conclude that manganese uptake can serve as a quantitative biomarker for TBI and that MEMRI is a minimally-invasive quantitative approach that can aid in the accurate diagnosis and management of blast TBI. In addition, the prevention of the increased uptake of manganese by body protection strongly suggests that the exposure of an individual to blast risk could benefit from the design of improved body armor.
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Affiliation(s)
- Olga Rodriguez
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC
| | - Michele L. Schaefer
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Brock Wester
- Research and Exploratory Development Department, Johns Hopkins University, Applied Physics Laboratory, Laurel, Maryland
| | - Yi-Chien Lee
- Department of Oncology, Georgetown University Medical Center, Washington DC
| | - Nathan Boggs
- Research and Exploratory Development Department, Johns Hopkins University, Applied Physics Laboratory, Laurel, Maryland
| | - Howard A. Conner
- Research and Exploratory Development Department, Johns Hopkins University, Applied Physics Laboratory, Laurel, Maryland
| | - Andrew C. Merkle
- Research and Exploratory Development Department, Johns Hopkins University, Applied Physics Laboratory, Laurel, Maryland
| | - Stanley T. Fricke
- Pediatric and Integrative Systems Biology, George Washington University, Washington, DC
| | - Chris Albanese
- Department of Oncology, Georgetown University Medical Center, Washington DC
- Department of Pathology, Georgetown University Medical Center, Washington DC
| | - Vassilis E. Koliatsos
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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295
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Abstract
Nuclear imaging techniques, including primarily positron emission tomography (PET) and single-photon emission computed tomography (SPECT), can provide quantitative information for a biological event in vivo with ultra-high sensitivity, however, the comparatively low spatial resolution is their major limitation in clinical application. By convergence of nuclear imaging with other imaging modalities like computed tomography (CT), magnetic resonance imaging (MRI) and optical imaging, the hybrid imaging platforms can overcome the limitations from each individual imaging technique. Possessing versatile chemical linking ability and good cargo-loading capacity, radioactive nanomaterials can serve as ideal imaging contrast agents. In this review, we provide a brief overview about current state-of-the-art applications of radioactive nanomaterials in the circumstances of multimodality imaging. We present strategies for incorporation of radioisotope(s) into nanomaterials along with applications of radioactive nanomaterials in multimodal imaging. Advantages and limitations of radioactive nanomaterials for multimodal imaging applications are discussed. Finally, a future perspective of possible radioactive nanomaterial utilization is presented for improving diagnosis and patient management in a variety of diseases.
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Affiliation(s)
- Daiqin Chen
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan; and
| | - Casey A. Dougherty
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan; and
| | - Dongzhi Yang
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan; and
| | - Hongwei Wu
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan; and
| | - Hao Hong
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
- Center for Molecular Imaging, University of Michigan, Ann Arbor, Michigan; and
- Comprehensive Cancer Center, University of Michigan, Ann Arbor, Michigan
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296
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Xia W, Zhou Y, Zheng T, Zhang B, Bassig BA, Li Y, Wise JP, Zhou A, Wan Y, Wang Y, Xiong C, Zhao J, Li Z, Yao Y, Hu J, Pan X, Xu S. Maternal urinary manganese and risk of low birth weight: a case-control study. BMC Public Health 2016; 16:142. [PMID: 26869268 PMCID: PMC4751650 DOI: 10.1186/s12889-016-2816-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Accepted: 02/03/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Manganese (Mn) is an essential element for humans, but exposure to high levels has been associated with adverse developmental outcomes. Early epidemiological studies evaluating the effect of Mn on fetal growth are inconsistent. METHODS We investigated the association between maternal urinary Mn during pregnancy and the risk of low birth weight (LBW). Mn concentrations in maternal urine samples collected before delivery were measured in 816 subjects (204 LBW cases and 612 matched controls) recruited between 2012 and 2014 in Hubei Province, China. RESULTS The median Mn concentration in maternal urine was 0.69 μg/g creatinine. Compared to the medium tertile of Mn levels, an increased risk of LBW was observed for the lowest tertile (≤0.30 μg/g creatinine) [adjusted odds ratio (OR) = 1.28; 95 % confidence interval (CI) = 0.67, 2.45], and a significantly increased risk of LBW was observed for the highest tertile (≥1.16 μg/g creatinine) [adjusted OR = 2.04; 95 % CI = 1.12, 3.72]. A curvilinear relationship between maternal urinary Mn and risk of LBW was observed, showing that the concentration at 0.43 μg/g creatinine was the point of inflection. Similar associations were observed among the mothers with female infants and among the younger mothers < 28 years old. However, among the mothers with male infants or the older mothers ≥ 28 years old, only higher levels of Mn were positively associated with LBW. CONCLUSIONS Lower or higher levels of maternal urinary Mn are associated with LBW, though only the association of LBW risk and higher levels of Mn was statistically significant. The findings also show that the associations may vary by maternal age and infant sex, but require confirmation in other populations.
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Affiliation(s)
- Wei Xia
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
| | - Yanqiu Zhou
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Tongzhang Zheng
- Department of Environmental Health Sciences, Brown School of Public Health, Providence, RI, USA
| | - Bin Zhang
- Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, People's Republic of China
| | - Bryan A Bassig
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Yuanyuan Li
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - John Pierce Wise
- Wise Laboratory of Environmental and Genetic Toxicology, Portland, ME, USA
| | - Aifen Zhou
- Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, People's Republic of China
| | - Yanjian Wan
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Youjie Wang
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Chao Xiong
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.,Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, People's Republic of China
| | - Jinzhu Zhao
- Women and Children Medical and Healthcare Center of Wuhan, Wuhan, Hubei, People's Republic of China
| | - Zhengkuan Li
- Macheng Maternal and Child Health Care Hospital, Macheng, Hubei, People's Republic of China
| | - Yuanxiang Yao
- Ezhou Maternal and Child Health Hospital, Ezhou, Hubei, People's Republic of China
| | - Jie Hu
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Xinyun Pan
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Shunqing Xu
- Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), school of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
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297
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Assessment of Trace Metals Contamination of Surface Water and Sediment: A Case Study of Mvudi River, South Africa. SUSTAINABILITY 2016. [DOI: 10.3390/su8020135] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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298
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Apaydin M, Erbas O, Taskiran D. Protection by Edaravone, a Radical Scavenger, against Manganese-Induced Neurotoxicity in Rats. J Biochem Mol Toxicol 2016; 30:217-23. [DOI: 10.1002/jbt.21780] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Melda Apaydin
- Department of Physiology, School of Medicine; Ege University; Izmir Turkey
- Department of Radiology, Atatürk Education and Training Hospital; Izmir Katip Çelebi University; Izmir Turkey
| | - Oytun Erbas
- Department of Physiology, School of Medicine; Istanbul Bilim University; Istanbul Turkey
| | - Dilek Taskiran
- Department of Physiology, School of Medicine; Ege University; Izmir Turkey
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299
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Expression Profiles of Long Noncoding RNAs and Messenger RNAs in Mn-Exposed Hippocampal Neurons of Sprague-Dawley Rats Ascertained by Microarray: Implications for Mn-Induced Neurotoxicity. PLoS One 2016; 11:e0145856. [PMID: 26745496 PMCID: PMC4706437 DOI: 10.1371/journal.pone.0145856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/09/2015] [Indexed: 12/12/2022] Open
Abstract
Manganese (Mn) is an essential trace element, while excessive expose may induce neurotoxicity. Recently, lncRNAs have been extensively studied and it has been confirmed that lncRNAs participate in neural functions and aberrantly expressed lncRNAs are involved in neurological diseases. However, the pathological effects of lncRNAs on Mn-induced neurotoxicity remain unclear. In this study, the expression profiles of lncRNAs and messenger RNAs (mRNAs) were identified in Mn-treated hippocampal neurons and control neurons via microarray. Bioinformatic methods and intersection analysis were also employed. Results indicated that 566, 1161, and 1474 lncRNAs meanwhile 1848, 3228, and 4022 mRNAs were aberrantly expressed in low, intermediate, and high Mn-exposed groups compared with the control group, respectively. Go analysis determined that differentially expressed mRNAs were targeted to biological processes, cellular components, and molecular functions. Pathway analysis indicated that these mRNAs were enriched in insulin secretion, cell cycle, and DNA replication. Intersection analysis denominated that 135 lncRNAs and 373 mRNAs were consistently up-regulated while 150 lncRNAs and 560 mRNAs were consistently down-regulated. Meanwhile, lncRNA BC079195 was significantly up-regulated while lncRNAs uc.229- and BC089928 were significantly down-regulated in three comparison groups. The relative expression levels of 3 lncRNAs and 4 mRNAs were validated through qRT-PCR. To the best of our knowledge, this study is the first to identify the expression patterns of lncRNAs and mRNAs in hippocampal neurons of Sprague-Dawley rats. The results may provide evidence on underlying mechanisms of Mn-induced neurotoxicity, and aberrantly expressed lncRNAs/mRNAs may be useful in further investigations to detect early symptoms of Mn-induced neuropsychiatric disorders in the central nervous system.
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300
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Shirkhanloo H, Khaligh A, Mousavi HZ, Rashidi A. Ultrasound assisted-dispersive-micro-solid phase extraction based on bulky amino bimodal mesoporous silica nanoparticles for speciation of trace manganese (II)/(VII) ions in water samples. Microchem J 2016. [DOI: 10.1016/j.microc.2015.10.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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