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Salles S, Salles R, Pavão MSG, Cardoso SC, Stelling MP. Elemental profiles in distant tissues during tumor progression. BMC Cancer 2023; 23:322. [PMID: 37024796 PMCID: PMC10080929 DOI: 10.1186/s12885-023-10782-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 03/28/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Essential elements have functions in tumor progression by promoting protumoral cellular processes, such as proliferation, and migration, among others. Obtaining an understanding of how these elements relate to tumor progression processes is of great importance for research. Elemental profile studies in distant tissues, which can be modulated by tumor cells to promote metastasis, have not been sufficiently investigated. The main goal of this study is to evaluate multielemental distribution during tumor progression, focusing on tumor tissue and distant tissues that may be affected. METHODS Tumor progression in vivo was simulated by inoculating C57BL/6 mice with Lewis Lung Carcinoma (LLC) cells. Samples of the primary tumor and distant tissues were collected during 5 weeks of tumor progression for the control and experimental (tumor-bearing) groups. The biological samples were analyzed using the synchrotron radiation X-Ray fluorescence technique. Data on the concentration of P, S, K, Ca, Mn, Fe, Cu, and Zn in the samples were obtained and statistically analyzed to evaluate the distribution of the elements during tumor progression in the primary tumor as well as distant tissues. RESULTS It was possible to observe significant changes in the concentrations' distribution of P, S, K, Ca, Mn, Fe, and Cu in distant tissues caused by the presence of tumor cells. It was also possible to detect a greater similarity between tumor tissue (which has the lung as tissue of origin) and a tissue of non-origin, such as the liver, which is an unprecedented result. Moreover, changes in the distributions of concentrations were detected and studied over time for the different tissues analyzed, such as primary tumor, liver and lung, in Control and Tumor groups. CONCLUSIONS Among other results, this paper could explore the modulation of distant tissues caused by the presence of a primary tumor. This could be achieved by the evaluation of several elements of known biological importance allowing the study of different biological processes involved in cancer. The role of essential elements as modulators of the tumor microenvironment is a relevant aspect of tumor progression and this work is a contribution to the field of tumoral metallomics.
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Affiliation(s)
- Samella Salles
- Federal Institute of Education, Science and Technology of Rio de Janeiro (IFRJ), Rio de Janeiro, Brazil
| | - Rebecca Salles
- Federal Center of Technological Education (CEFET/RJ), Rio de Janeiro, Brazil
| | - Mauro S G Pavão
- Medical Biochemistry Institute, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Simone C Cardoso
- Physics Institute, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Mariana P Stelling
- Federal Institute of Education, Science and Technology of Rio de Janeiro (IFRJ), Rio de Janeiro, Brazil.
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2
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Bag R, Sikdar Y, Sahu S, Islam MM, Mandal S, Goswami S. Benzimidazole–acid hydrazide Schiff–Mannich combo ligands enable nano–molar detection of Zn 2+ via fluorescence turn–on mode from semi–aqueous medium, HuH–7 cells, and plants. NEW J CHEM 2022. [DOI: 10.1039/d2nj02875a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we have synthesized two unsymmetrical and dipodal Schiff–Mannich combo ligands, benzoic acid (3–benzoimidazol–1–ylmethyl–2–hydroxy–5–methyl–benzylidene)–hydrazide (H2BBH) and the hydroxyl analogue, 2–hydroxy–benzoic acid (3–benzoimidazol–1–ylmethyl–2–hydroxy–5–methyl–benzylidene)–hydrazide (H3BSH) for selective detection of Zn2+ in semi–aqueous...
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3
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Zinc ionophores: chemistry and biological applications. J Inorg Biochem 2021; 228:111691. [PMID: 34929542 DOI: 10.1016/j.jinorgbio.2021.111691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 02/06/2023]
Abstract
Zinc can play a pathophysiological role in several diseases and can interfere in key processes of microbial growth. This evidence justifies the efforts in applying Zinc ionophores to restore Zinc homeostasis and treat bacterial/viral infections such as coronavirus diseases. Zinc ionophores increase the intracellular concentration of Zinc ions causing significant biological effects. This review provides, for the first time, an overview of the applications of the main Zinc ionophores in Zinc deficiency, infectious diseases, and in cancer, discussing the pharmacological and coordination properties of the Zinc ionophores.
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Fadeeva IV, Goldberg MA, Preobrazhensky II, Mamin GV, Davidova GA, Agafonova NV, Fosca M, Russo F, Barinov SM, Cavalu S, Rau JV. Improved cytocompatibility and antibacterial properties of zinc-substituted brushite bone cement based on β-tricalcium phosphate. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:99. [PMID: 34406523 PMCID: PMC8373736 DOI: 10.1007/s10856-021-06575-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/09/2021] [Indexed: 05/11/2023]
Abstract
For bone replacement materials, osteoconductive, osteoinductive, and osteogenic properties are desired. The bacterial resistance and the need for new antibacterial strategies stand among the most challenging tasks of the modern medicine. In this work, brushite cements based on powders of Zinc (Zn) (1.4 wt%) substituted tricalcium phosphate (β-TCP) and non-substituted β-TCP were prepared and investigated. Their initial and final phase composition, time of setting, morphology, pH evolution, and compressive strength are reported. After soaking for 60 days in physiological solution, the cements transformed into a mixture of brushite and hydroxyapatite. Antibacterial activity of the cements against Enterococcus faecium, Escherichia coli, and Pseudomonas aeruginosa bacteria strains was attested. The absence of cytotoxicity of cements was proved for murine fibroblast NCTC L929 cells. Moreover, the cell viability on the β-TCP cement containing Zn2+ ions was 10% higher compared to the β-TCP cement without zinc. The developed cements are perspective for applications in orthopedics and traumatology.
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Affiliation(s)
- Inna V Fadeeva
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky pr. 49, Moscow, Russian Federation, 119334
| | - Margarita A Goldberg
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky pr. 49, Moscow, Russian Federation, 119334
| | - Ilya I Preobrazhensky
- Department of Materials Science, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow, Russian Federation, 119991
| | - Georgy V Mamin
- Kazan Federal University, Kremlevskaya 18, Kazan, Russian Federation, 420008
| | - Galina A Davidova
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow, Russian Federation, 142290
| | - Nadezhda V Agafonova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", pr. Nauki, 5, Pushchino, Moscow Region, Russian Federation, 142290
| | - Marco Fosca
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133, Rome, Italy
| | - Fabrizio Russo
- Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University, Via Alvaro del Portillo 200, 00128, Rome, Italy
| | - Sergey M Barinov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky pr. 49, Moscow, Russian Federation, 119334
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, P-ta 1 Decembrie 10, 410073, Oradea, Romania
| | - Julietta V Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere 100, 00133, Rome, Italy.
- Department of Analytical, Physical and Colloid Chemistry, Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Trubetskaya 8, build. 2, Moscow, Russian Federation, 119991.
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Wani AL, Hammad Ahmad Shadab GG, Afzal M. Lead and zinc interactions - An influence of zinc over lead related toxic manifestations. J Trace Elem Med Biol 2021; 64:126702. [PMID: 33285442 DOI: 10.1016/j.jtemb.2020.126702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/30/2020] [Accepted: 11/23/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND Interaction between metals is known from earlier studies, in which one metal influences the absorption and functional role of other. Lead is known to cause debilitating effects in living organisms and also prevents several essential trace metals from functioning normally. METHODS The relevant literature using the key words lead toxicity, lead zinc interaction, zinc nutrition and the ability of zinc to act against lead has been reviewed. RESULTS Role of several nutrients in reducing the manifestations of toxic metals have been elucidated recently. Lead damages bio-membranes, causes cognitive disabilities and disturbs the normal process of DNA replication and transcription. Zinc on the other hand helps in proper maintenance of the cellular membranes and plays an important role as a metal cofactor in most of the proteins vital for membrane integrity. Zinc has essential role in cognitive functioning, zinc finger proteins and significantly neutralizes most toxic effects of lead. CONCLUSION Increased lead exposure and limited resources for tackling lead poisoning may cause an increased possibility of future environmental emergencies. Interactions between essential nutrient metals and non-essential toxic metals may act as important factor which can be used to target the metal toxicities. An assumption is made that the lead toxicity can be reduced by maintaining the status of essential trace metals like zinc.
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Affiliation(s)
- Ab Latif Wani
- Cytogenetics and Molecular Toxicological Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
| | - G G Hammad Ahmad Shadab
- Cytogenetics and Molecular Toxicological Laboratory, Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
| | - Mohammad Afzal
- Section of Genetics, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
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Fang L, Watkinson M. Subcellular localised small molecule fluorescent probes to image mobile Zn 2. Chem Sci 2020; 11:11366-11379. [PMID: 34094379 PMCID: PMC8162803 DOI: 10.1039/d0sc04568c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/07/2020] [Indexed: 12/26/2022] Open
Abstract
Zn2+, as the second most abundant d-block metal in the human body, plays an important role in a wide range of biological processes, and the dysfunction of its homeostasis is related to many diseases, including Type 2 diabetes, Alzheimer's disease and prostate and breast cancers. Small molecule fluorescent probes, as effective tools for real-time imaging, have been widely used to study Zn2+ related processes. However, the failure to control their localisation in cells has limited their utility somewhat, as they are generally incapable of studying individual processes in a specific cellular location. This perspective presents an overview of the recent developments in specific organelle localised small molecule fluorescent Zn2+ probes and their application in biological milieu, which could help to extend our understanding of the mechanisms that cells use to respond to dysfunction of zinc homeostasis and its roles in disease initiation and development.
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Affiliation(s)
- Le Fang
- The Joseph Priestley Building, School of Biological and Chemical Science, Queen Mary University of London Mile End Road London E1 4NS UK
| | - Michael Watkinson
- The Lennard-Jones Laboratories, School of Chemical and Physical Science, Keele University ST5 5BG UK
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Khader A, Arinzeh TL. Biodegradable zinc oxide composite scaffolds promote osteochondral differentiation of mesenchymal stem cells. Biotechnol Bioeng 2019; 117:194-209. [PMID: 31544962 DOI: 10.1002/bit.27173] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/26/2019] [Accepted: 09/16/2019] [Indexed: 02/06/2023]
Abstract
Osteoarthritis (OA) involves the degeneration of articular cartilage and subchondral bone. The capacity of articular cartilage to repair and regenerate is limited. A biodegradable, fibrous scaffold containing zinc oxide (ZnO) was fabricated and evaluated for osteochondral tissue engineering applications. ZnO has shown promise for a variety of biomedical applications but has had limited use in tissue engineering. Composite scaffolds consisted of ZnO nanoparticles embedded in slow degrading, polycaprolactone to allow for dissolution of zinc ions over time. Zinc has well-known insulin-mimetic properties and can be beneficial for cartilage and bone regeneration. Fibrous ZnO composite scaffolds, having varying concentrations of 1-10 wt.% ZnO, were fabricated using the electrospinning technique and evaluated for human mesenchymal stem cell (MSC) differentiation along chondrocyte and osteoblast lineages. Slow release of the zinc was observed for all ZnO composite scaffolds. MSC chondrogenic differentiation was promoted on low percentage ZnO composite scaffolds as indicated by the highest collagen type II production and expression of cartilage-specific genes, while osteogenic differentiation was promoted on high percentage ZnO composite scaffolds as indicated by the highest alkaline phosphatase activity, collagen production, and expression of bone-specific genes. This study demonstrates the feasibility of ZnO-containing composites as a potential scaffold for osteochondral tissue engineering.
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Affiliation(s)
- Ateka Khader
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, New Jersey
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8
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Tizhe E, Ibrahim N, Fatihu M, Ambali S, Igbokwe I, Tizhe U. Pancreatic function and histoarchitecture in Wistar rats following chronic exposure to Bushfire®: the mitigating role of zinc. J Int Med Res 2018; 46:3296-3305. [PMID: 29962251 PMCID: PMC6134669 DOI: 10.1177/0300060518778640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 05/02/2018] [Indexed: 11/17/2022] Open
Abstract
Objectives To assess the toxicopathologic effects of chronic exposure to the glyphosate-based herbicide Bushfire® on the pancreas of Wistar rats and the protective role of zinc. Methods We exposed the rats to daily doses of 14.4 to 750 mg/kg body weight of the glyphosate-based herbicide Bushfire® and to 50 or 100 mg/kg zinc, and measured blood glucose levels and serum insulin levels. Tissue samples were evaluated for histopathological alterations. Results Levels of both blood glucose and serum insulin increased in glyphosate-exposed rats, and moderate to severe degenerative changes were observed in both glandular pancreatic acinar cells and islets of Langerhans in all rats exposed to glyphosate. These effects were prevented by pretreatment with zinc. Conclusion Chronic exposure to glyphosate can alter pancreatic function and histoarchitecture, but zinc supplementation can mitigate these toxicopathologic effects.
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Affiliation(s)
- Emmanuel Tizhe
- University of Jos, Department of Veterinary Microbiology and
Pathology, Plateau State, Nigeria
| | - Najume Ibrahim
- Ahmadu Bello University, Department of Veterinary Pathology,
Faculty of Veterinary Medicine, Kaduna State, Nigeria
| | - Mohammed Fatihu
- Ahmadu Bello University, Department of Veterinary Pathology,
Faculty of Veterinary Medicine, Kaduna State, Nigeria
| | - Suleiman Ambali
- University of Ilorin, Department of Veterinary Pharmacology and
Toxicology, Kwara State, Nigeria
| | - Ikechukwu Igbokwe
- University of Maiduguri, Department of Veterinary Pathology,
Borno State, Nigeria
| | - Ussa Tizhe
- Ahmadu Bello University, Department of Veterinary Medicine,
Kaduna State, Nigeria
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9
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Bodiga VL, Inapurapu SP, Vemuri PK, Kudle MR, Bodiga S. Intracellular zinc status influences cisplatin-induced endothelial permeability through modulation of PKCα, NF-κB and ICAM-1 expression. Eur J Pharmacol 2016; 791:355-368. [DOI: 10.1016/j.ejphar.2016.09.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 09/02/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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10
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Paterson PG, Grahn BH, Gottschall-Pass KT, Gorecki DK, Semple HA. Postnatal Deficiencies of Zinc and Taurine Alter Electroretinograms, Oscillatory Potentials and Morphology of the Rat Retina. Nutr Neurosci 2016; 2:175-89. [DOI: 10.1080/1028415x.1999.11747276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Wilson DB, Bettger WJ. Effects of Dietary Zinc on Plasma and Cerebral Cortex Butyrylcholinesterase Activities. Nutr Neurosci 2016. [DOI: 10.1080/1028415x.2000.11747341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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13
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Zhang X, Li H, Liu G, Pu S. Highly selective ratiometric fluorescent Zn2+chemosensor based on diarylethene derivative with bi-8-carboxamidoquinoline unit. LUMINESCENCE 2016; 31:1488-1495. [DOI: 10.1002/bio.3134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 02/28/2016] [Accepted: 03/08/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaodong Zhang
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang 330013 People's Republic of China
| | - Hui Li
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang 330013 People's Republic of China
| | - Gang Liu
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang 330013 People's Republic of China
| | - Shouzhi Pu
- Jiangxi Key Laboratory of Organic Chemistry; Jiangxi Science and Technology Normal University; Nanchang 330013 People's Republic of China
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14
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Patra C, Bhanja AK, Sen C, Ojha D, Chattopadhyay D, Mahapatra A, Sinha C. Imine-functionalized thioether Zn(ii) turn-on fluorescent sensor and its selective sequential logic operations with H2PO4−, DFT computation and live cell imaging. RSC Adv 2016. [DOI: 10.1039/c6ra07089b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Thioether Schiff base (H2L), a nontoxic Zn2+-sensor (LOD, 0.050 μM) has shown selective ON–OFF emission following INHIBIT logic circuit with H2PO4−and useful agent for the identification of Zn2+and H2PO4−in intracellular fluid in living cells.
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Affiliation(s)
- Chiranjit Patra
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| | | | - Chandana Sen
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| | - Durbadal Ojha
- ICMR Virus Unit
- Infectious Diseases & Beliaghata General Hospital
- Kolkata-700 010
- India
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15
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Sharma N, Reja SI, Bhalla V, Kumar M. A thiacalix[4]crown based chemosensor for Zn2+ and H2PO4−: sequential logic operations at the molecular level. Dalton Trans 2015; 44:6062-8. [DOI: 10.1039/c5dt00082c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A thiacalix[4]crown based di topic receptor 3 has been synthesized which shows negative allosteric behaviour between Zn2+/K+ ions. Further, 3-Zn2+ complex has been used for detection of H2PO4−.
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Affiliation(s)
- Neetu Sharma
- Department of Chemistry
- UGC Sponsored Centre for Advance Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Shahi Imam Reja
- Department of Chemistry
- UGC Sponsored Centre for Advance Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Vandana Bhalla
- Department of Chemistry
- UGC Sponsored Centre for Advance Studies-1
- Guru Nanak Dev University
- Amritsar
- India
| | - Manoj Kumar
- Department of Chemistry
- UGC Sponsored Centre for Advance Studies-1
- Guru Nanak Dev University
- Amritsar
- India
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16
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Nakakido M, Aikawa C, Nakagawa I, Tsumoto K. The staphylococcal elastin-binding protein regulates zinc-dependent growth/biofilm formation. J Biochem 2014; 156:155-62. [PMID: 24787448 DOI: 10.1093/jb/mvu027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Staphylococcus aureus is one of the most important human pathogens because it is a common cause of nosocomial infections. The elastin-binding protein of Staphylococcus aureus (EbpS) is an adhesin that is responsible for attachment to host cells via its binding to elastin. Despite its relatively weak contribution to adhesion, the ebpS gene is highly conserved among S. aureus isolates, suggesting that EbpS may have other crucial functions. Here, we found that EbpS binds Zn(2+) with its N-terminal region, which leads to local conformational changes that result in the assembly of the EbpS protein. The growth rate of the EbpS-deficient strain was considerably decreased. Zn(2+) chelation decreased the growth rate of the wild-type strain but did not alter that of the EbpS-deficient strain. Furthermore, biofilm formation by the EbpS-deficient strain was abnormally enhanced in the Zn(2+) concentration-dependent manner. All the results suggest that ebpS deficiency led to a zinc concentration-dependent inability to modulate the growth/biofilm maturation phase appropriately. Given the high conservation of ebpS and that appropriate regulation of biofilm formation is thought to be essential for effective staphylococcal infection, inhibition of EbpS binding to Zn(2+) could lead to the development of novel therapeutic strategies for controlling S. aureus infections.
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Affiliation(s)
- Makoto Nakakido
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Chihiro Aikawa
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-
| | - Ichiro Nakagawa
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kouhei Tsumoto
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8562, Japan; Division of Bacteriology, International Research Center for infectious Diseases, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-ku, Tokyo 108-8639, Japan; Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; and Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, 4-6-1, Shirokanedai, Minato-
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Özaslan M, Kılıç I, Aytekin T, Güldür M, Bozkurt A. Investigation of Antioxidant Effect of Zinc Biochemically and Histopathologically in Rats. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2005.10817205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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18
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Kaur G, Pickrell G, Kimsawatde G, Homa D, Allbee HA, Sriranganathan N. Synthesis, cytotoxicity, and hydroxyapatite formation in 27-Tris-SBF for sol-gel based CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses. Sci Rep 2014; 4:4392. [PMID: 24637634 PMCID: PMC3957134 DOI: 10.1038/srep04392] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 02/10/2014] [Indexed: 11/09/2022] Open
Abstract
CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses were prepared via an optimized sol-gel method. The current investigation was focused on producing novel zinc based calcium phosphoborosilicate glasses and to evaluate their mechanical, rheological, and biocompatible properties. The morphology and composition of these glasses were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The particle size, mechanical and flexural strength was also determined. Furthermore, the zeta potential of all the glasses were determined to estimate their flocculation tendency. The thermal analysis and weight loss measurements were carried out using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) respectively. For assessing the in-vitro bioactive character of synthesized glasses, the ability for apatite formation on their surface upon their immersion in simulated body fluid (SBF) was checked using SEM and pH measurements. MTS assay cytotoxicity assay and live-dead cell viability test were conducted on J774A.1 cells murine macrophage cells for different glass concentrations.
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Affiliation(s)
- Gurbinder Kaur
- Department of Material Science and Engineering, Holden Hall, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
| | - G. Pickrell
- Department of Material Science and Engineering, Holden Hall, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
| | - G. Kimsawatde
- Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
| | - D. Homa
- Department of Material Science and Engineering, Holden Hall, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
| | - H. A. Allbee
- Department of Material Science and Engineering, Holden Hall, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
| | - N. Sriranganathan
- Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia-24060, USA
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19
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Ghosh M, Pulicherla KK, Rekha VPB, Vijayanand A, Sambasiva Rao KRS. Optimisation of process conditions for lactose hydrolysis in paneer whey with cold-active β-galactosidase from psychrophilicThalassospira frigidphilosprofundus. INT J DAIRY TECHNOL 2013. [DOI: 10.1111/1471-0307.12020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mrinmoy Ghosh
- Department of Biotechnology; Acharya Nagarjuna University; Nagarjuna Nagar; Guntur; 522510; India
| | - Krishna Kanth Pulicherla
- Department of Biotechnology; R. V. R. & J. C. College of Engineering; Chowdavaram; Guntur; 522019; India
| | - Venkata Perumal Babu Rekha
- Department of Biotechnology; R. V. R. & J. C. College of Engineering; Chowdavaram; Guntur; 522019; India
| | - Adapa Vijayanand
- Department of Biotechnology; Acharya Nagarjuna University; Nagarjuna Nagar; Guntur; 522510; India
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20
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Tang L, Cai M, Zhou P, Zhao J, Zhong K, Hou S, Bian Y. A highly selective and ratiometric fluorescent sensor for relay recognition of zinc(ii) and sulfide ions based on modulation of excited-state intramolecular proton transfer. RSC Adv 2013. [DOI: 10.1039/c3ra42931h] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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21
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Otsuka M, Shikamura M, Otsuka K, Sogo Y, Ito A. Therapeutic effect of zinc-containing calcium phosphate suspension injection in thermal burn-rats. J Biomed Mater Res A 2012; 101:1518-24. [DOI: 10.1002/jbm.a.34429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Revised: 07/11/2012] [Accepted: 07/13/2012] [Indexed: 11/09/2022]
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22
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Tank KP, Sharma P, Kanchan DK, Joshi MJ. FTIR, powder XRD, TEM and dielectric studies of pure and zinc doped nano-hydroxyapatite. CRYSTAL RESEARCH AND TECHNOLOGY 2011. [DOI: 10.1002/crat.201100080] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Oudadesse H, Dietrich E, Gal YL, Pellen P, Bureau B, Mostafa AA, Cathelineau G. Apatite forming ability and cytocompatibility of pure and Zn-doped bioactive glasses. Biomed Mater 2011; 6:035006. [DOI: 10.1088/1748-6041/6/3/035006] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Li Z, Yubao L, Yi Z, Lan W, Jansen JA. In vitro and in vivo evaluation on the bioactivity of ZnO containing nano-hydroxyapatite/chitosan cement. J Biomed Mater Res A 2010; 93:269-79. [PMID: 19562749 DOI: 10.1002/jbm.a.32500] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A ZnO containing nano-hydroxyapatite/chitosan (n-HA/CS) cement was developed and its bone formation ability was investigated in vitro and in vivo. The physico-chemical properties of the cement were determined in terms of pH variation during and after setting, injectability and wettability. The results indicated that, the pH varied from 7.04 to 7.12 throughout the soaking of the cement in distilled water. The injectability was excellent during the first 4 min, but the cement became less injectable or even not injectable at all after 7 min setting. The static contact angle of the cement against water was 53.5 +/- 2.7 degrees . The results of immersion tests in simulated body fluid (SBF) indicated that the cement exhibited excellent bone-like apatite forming ability. In vivo studies, involving the installation of the cement of tibial-bone defects in rabbit tibia revealed an inflammatory response around the cement at 3 days of implantation. After 4 weeks, the inflammation began to disappear and the cement had bound to the surrounding host bone. Radiological examination also confirmed that the ZnO containing n-HA/CS cement significantly induced new bone formation. These results suggest that the ZnO containing n-HA/CS cement may be beneficial to enhance bone regeneration in osseous defect sites.
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Affiliation(s)
- Zhang Li
- Analytical and Testing Center, Research Center for Nano-biomaterials, Sichuan University, Chengdu 610064, People's Republic of China
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25
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Li X, Sogo Y, Ito A, Mutsuzaki H, Ochiai N, Kobayashi T, Nakamura S, Yamashita K, LeGeros RZ. The optimum zinc content in set calcium phosphate cement for promoting bone formation in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009; 29:969-975. [PMID: 21461346 PMCID: PMC3065834 DOI: 10.1016/j.msec.2008.08.021] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The final aim of our study is to develop a novel calcium phosphate cement based on zinc-containing α-tricalcium phosphate (αZnTCP) and evaluate its potential as bonegraft material in vivo. In the present study, in vivo efficacy of zinc in hardened bodies of αZnTCP was explored. The hardened bodies prepared from αZnTCP with zinc content of 0.00, 0.04, 0.08, 0.11 and 0.19 wt % were prepared by mixing pure αTCP or αZnTCP powder with 12 wt% sodium succinate solution at a solid-to-liquid ratio of 2.0. Due to the release of zinc ions into the physiological salt solution during curing, the zinc content in the hardened bodies was calculated to be 0.00, 0.03, 0.06, 0.10 and 0.18 wt%, respectively. The hardened bodies were implanted in the femora and tibia of white rabbits for 4 weeks. Histological and histomorphometric evaluation showed that the hardened body containing 0.03 wt% zinc, significantly promoted more new bone formation without evoking adverse tissue reactions than that without zinc. The hardened bodies containing 0.06 and 0.10 wt% zinc also resulted in the increase in numbers of active osteoblasts surrounding the new bone but caused inflammation at the implant sites. Results of this study indicate that the hardened body prepared with αZnTCP is superior to that prepared with αTCP in promoting new bone formation due to the release of zinc ions. This study also indicates that the optimum amount of zinc in the hardened body is about 0.03 wt % to avoid inflammatory reaction.
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Affiliation(s)
- Xia Li
- Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Central 6, 1-1-1 Higashi, Tsukuba-shi, Ibaraki 305-8566, Japan
| | - Yu Sogo
- Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Central 6, 1-1-1 Higashi, Tsukuba-shi, Ibaraki 305-8566, Japan
| | - Atsuo Ito
- Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Central 6, 1-1-1 Higashi, Tsukuba-shi, Ibaraki 305-8566, Japan
| | - Hirotaka Mutsuzaki
- Department of Orthopaedic Surgery, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Naoyuki Ochiai
- Department of Orthopaedic Surgery, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Takayuki Kobayashi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Satoshi Nakamura
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Kimihiro Yamashita
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Racquel Z. LeGeros
- Department of Biomaterials & Biomimetics, College of Dentistry, New York University, 345 East 24th Street, New York, NY 10010, US
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Li M, Xiao X, Liu R, Chen C, Huang L. Structural characterization of zinc-substituted hydroxyapatite prepared by hydrothermal method. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:797-803. [PMID: 17665101 DOI: 10.1007/s10856-007-3213-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2007] [Accepted: 06/06/2007] [Indexed: 05/16/2023]
Abstract
Zinc-substituted hydroxyapatite (Zn-HA) powders were prepared by hydrothermal method using Ca(NO(3))(2), (NH(4))(3)PO(4) and Zn(NO(3))(2 )as reagents. X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM) were used to characterize the crystalline phase, microstructure, chemical composition, morphology and thermal stability of Zn-HA. The results show that the substitution content of zinc (Zn) in Zn-HA powders prepared in NaOH solution is higher than that prepared in NH(3) solution, and is lower than that of the corresponding amount of starting materials. The substitution of the Zn ion for calcium ion causes a lower crystallinity of Zn-HA and changes the lattice parameters of Zn-HA, since the ionic radius is smaller in Zn(2+) (0.074 nm) than in Ca(2+ )(0.099 nm). Furthermore, the substitution of the Zn ions restrains the growth of Zn-HA crystal and decreases the thermal stability of Zn-HA. Zn-HA powder prepared in NH(3) solution starts to decompose at 800 degrees C when the Zn fraction increases to 15 mol%, while that prepared in NaOH solution start to decompose at 5 mol% Zn. The substitution content of Zn significantly influences the thermal stability, microstructure and morphology of Zn-HA.
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Affiliation(s)
- Ming'Ou Li
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, China
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28
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Amara S, Abdelmelek H, Garrel C, Guiraud P, Douki T, Ravanat JL, Favier A, Sakly M, Ben Rhouma K. Zinc supplementation ameliorates static magnetic field-induced oxidative stress in rat tissues. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2007; 23:193-197. [PMID: 21783757 DOI: 10.1016/j.etap.2006.09.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Revised: 08/29/2006] [Accepted: 09/05/2006] [Indexed: 05/31/2023]
Abstract
The present study was undertaken to find out the effect of zinc supplementation on the antioxidant enzymatic system, lipid peroxidation and DNA oxidation in liver and kidney of static magnetic field (SMF) exposed rats. The exposure of rats to SMF (128mT, 1h/day during 30 consecutive days) decreased the activities of glutathione peroxidase (GPx), catalase (CAT) and the superoxide dismutase (SOD) in liver and kidney. By contrast, sub-chronic exposure to SMF increased the malondialdehyde (MDA) concentration in liver and kidney. Our results revealed an increase of the 8-oxo-7,8-dihydro-2'-desoxyguanosine (8-oxodGuo) in kidney of SMF-exposed rats. However, this biomarker of DNA oxidation remained unchanged in liver. Zinc supplementation (ZnCl(2), 40mg/l, per os) in SMF-exposed rats restored the activities of GPx, CAT and SOD in liver to those of control group. However, only CAT activity was restored in kidney. Moreover, zinc administration was able to bring down the elevated levels of MDA in the liver but not in the kidney. Interestingly, zinc supplementation attenuated DNA oxidation induced by SMF in kidney to the control level. Our investigations suggested that zinc supplementation minimizes oxidative damage induced by SMF in rat tissues.
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Affiliation(s)
- Salem Amara
- Laboratoire de Physiologie Animale, Faculté des Sciences de Bizerte, 7021 Jarzouna, Tunisia; Laboratoire de Stress Oxydant, Département de Biologie Intégrée, CHU-Grenoble, France; Commissariat d' Energie Atomique DRFMC/SCIB, Laboratoire des Lésions des Acides Nucléiques, Grenoble, France
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29
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Metz CHD, Schröder AK, Overbeck S, Kahmann L, Plümäkers B, Rink L. T-helper type 1 cytokine release is enhanced by in vitro zinc supplementation due to increased natural killer cells. Nutrition 2007; 23:157-63. [PMID: 17150331 DOI: 10.1016/j.nut.2006.10.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2006] [Revised: 07/07/2006] [Accepted: 10/24/2006] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We examined the influence of zinc on T-helper type 1 (Th1)/T-helper type 2 (Th2) balance in human lymphocytes. METHODS Human peripheral blood mononuclear cells or diluted whole blood were cultured for 8 d in the presence of zinc (30 or 60 microM) or 1 microM of N, N, N', N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN) (a zinc-specific chelator). Phytohemagglutinin-induced cytokine release was measured by enzyme-linked immunosorbent assay, and expression of CD56/CD69, CCR4/CD3, and CCR5/CD3 and intracellular labile zinc were detected by flow cytometry. RESULTS We found that our in vitro supplementation resulted in an increase of intracellular labile zinc comparable to that of a 7-wk administration of 10 mg of zinc per day in vivo. Zinc triggered interferon-gamma release and impaired interleukin-10 release. Phenotypically, a Th2/Th1 shift could not be confirmed after detecting the Th1-specific chemokine receptor CCR5 or CCR4 for Th2 cells. Surprisingly, we detected a larger amount of CD56+ cells after zinc stimulation, leading us to the conclusion that the amount of interferon-gamma release after zinc supplementation might be attributed to the upregulation of natural killer cells after in vitro zinc supplementation rather than to a Th2/Th1 shift. CONCLUSION We suggest that a nutritional intake of 10 mg of zinc increases the quantity of interferon-gamma-producing natural killer cells and strengthens the immune system against neoplasms and viral infections.
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Affiliation(s)
- Claudia H D Metz
- Institute of Immunology, RWTH Aachen University Hospital, Aachen, Germany
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30
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Amara S, Douki T, Ravanat JL, Garrel C, Guiraud P, Favier A, Sakly M, Ben Rhouma K, Abdelmelek H. Influence of a static magnetic field (250 mT) on the antioxidant response and DNA integrity in THP1 cells. Phys Med Biol 2007; 52:889-98. [PMID: 17264359 DOI: 10.1088/0031-9155/52/4/002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aim of this study was to investigate the effect of static magnetic field (SMF) exposure in antioxidant enzyme activity, the labile zinc fraction and DNA damage in THP1 cells (monocyte line). Cell culture flasks were exposed to SMF (250 mT) during 1 h (group 1), 2 h (group 2) and 3 h (group 3). Our results showed that cell viability was slightly lower in SMF-exposed groups compared to a sham exposed group. However, SMF exposure failed to alter malondialdehyde (MDA) concentration (+6%, p>0.05) and glutathione peroxidase (GPx) (-5%, p>0.05), catalase (CAT) (-6%, p>0.05) and superoxide dismutase (SOD) activities (+38%, p>0.05) in group 3 compared to the sham exposed group. DNA analysis by single cell gel electrophoresis (comet assay) revealed that SMF exposure did not exert any DNA damage in groups 1 and 2. However, it induced a low level of DNA single strand breaks in cells of group 3. To further explore the oxidative DNA damage, cellular DNA for group 3 was isolated, hydrolyzed and analysed by HPLC-EC. The level of 8-oxodGuo in this group remained unchanged compared to the sham exposed group (+6.5%, p>0.05). Cells stained with zinc-specific fluorescent probes zinpyr-1 showed a decrease of labile zinc fraction in all groups exposed to SMF. Our data showed that SMF exposure (250 mT, during 3 h) did not cause oxidative stress and DNA damage in THP1 cells. However, SMF could alter the intracellular labile zinc fraction.
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Affiliation(s)
- Salem Amara
- Laboratoire de Physiologie Animale, Faculté des Sciences de Bizerte, 7021 Jarzouna, Tunisia.
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Yoshida M, Yonetani A, Shirasaki T, Wada K. Dietary NaCl supplementation prevents muscle necrosis in a mouse model of Duchenne muscular dystrophy. Am J Physiol Regul Integr Comp Physiol 2006; 290:R449-55. [PMID: 16179484 DOI: 10.1152/ajpregu.00684.2004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The mdx mouse is an animal model for Duchenne muscular dystrophy. Mdx mice fed a 12% NaCl diet from birth up to 20 days of age (mdx-Na mice) had an ∼50% reduction in serum creatine kinase (CK) activity compared with mdx mice fed a standard diet. Most notably, necrotic fibers in tibialis anterior (TA) muscle of mdx-Na mice were reduced by 99% and were similar in control mice. These mdx mice displayed significantly elevated blood Ca2+ and Na+ levels, while the total calcium content of their TA muscle was reduced to the level of control mice. In addition, mdx-Na mice had elevated zinc and magnesium contents in their TA muscle. These results suggest that elevated serum Na+ leads to Ca2+ extrusion from muscle via the Na+/Ca2+ exchanger causing a decrease in intracellular Ca2+ levels and an increase in blood Ca2+ levels. Extracellular Ca2+ and, in addition, Zn2+ and Mg2+ might also contribute to the stabilization of the cell membrane. Other possibilities explaining the surprisingly efficacious beneficial effect of dietary sodium exist and are discussed.
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Affiliation(s)
- Mizuko Yoshida
- Department of Degenerative Neurological Disease, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo 187-8052, Japan.
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Du RL, Chang J, Ni SY, Zhai WY, Wang JY. Characterization and in vitro bioactivity of zinc-containing bioactive glass and glass-ceramics. J Biomater Appl 2006; 20:341-60. [PMID: 16443621 DOI: 10.1177/0885328206054535] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Zinc-containing glass is prepared by the substitution of CaO in 58S bioactive glass with 0.5 and 4 wt% ZnO, and glass-ceramics are obtained by heat-treating the glass at 1,200 C. The bending strength and in vitro bioactivity of the glass and glass-ceramics are evaluated. The results indicate that Zn promotes the crystallization of SiO(2) and wollastonite in glass-ceramics, and proper crystallization can enhance the bending strength of the glass-ceramic. The in vitro results show that ZnO in glass retards the hydroxyapatite (HA) nucleation at the initial stage of simulated body fluid (SBF) soaking, but does not affect the growth of HA after long periods of soaking, and the ionic products of 58S4Z glass can stimulate the proliferation of osteoblast at certain concentrations. Osteoblasts attach well on both glass samples and glass-ceramic samples, but the high Si ion concentration released from glass samples restrains the proliferation of osteoblasts after 3 days of culture. In contrast, osteoblasts show good proliferation on glass-ceramic samples, and ZnO in glass-ceramics promotes the proliferation rate. The results in this study suggest that the glass and glass-ceramics with different ZnO content might be used as bioactive bone implant materials in different applications.
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Affiliation(s)
- Rui Lin Du
- Graduate School of the Chinese Academy of Sciences, Shanghai, China 200050
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Miura T, Kishioka Y, Wakamatsu JI, Hattori A, Hennebry A, Berry CJ, Sharma M, Kambadur R, Nishimura T. Decorin binds myostatin and modulates its activity to muscle cells. Biochem Biophys Res Commun 2005; 340:675-80. [PMID: 16380093 DOI: 10.1016/j.bbrc.2005.12.060] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2005] [Accepted: 12/09/2005] [Indexed: 11/23/2022]
Abstract
Myostatin, a member of TGF-beta superfamily of growth factors, acts as a negative regulator of skeletal muscle mass. The mechanism whereby myostatin controls the proliferation and differentiation of myogenic cells is mostly clarified. However, the regulation of myostatin activity to myogenic cells after its secretion in the extracellular matrix (ECM) is still unknown. Decorin, a small leucine-rich proteoglycan, binds TGF-beta and regulates its activity in the ECM. Thus, we hypothesized that decorin could also bind to myostatin and participate in modulation of its activity to myogenic cells. In order to test the hypothesis, we investigated the interaction between myostatin and decorin by surface plasmon assay. Decorin interacted with mature myostatin in the presence of concentrations of Zn(2+) greater than 10microM, but not in the absence of Zn(2+). Kinetic analysis with a 1:1 binding model resulted in dissociation constants (K(D)) of 2.02x10(-8)M and 9.36x10(-9)M for decorin and the core protein of decorin, respectively. Removal of the glycosaminoglycan chain by chondroitinase ABC digestion did not affect binding, suggesting that decorin could bind to myostatin with its core protein. Furthermore, we demonstrated that immobilized decorin could rescue the inhibitory effect of myostatin on myoblast proliferation in vitro. These results suggest that decorin could trap myostatin and modulate its activity to myogenic cells in the ECM.
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Affiliation(s)
- Takayuki Miura
- Meat Science Laboratory, Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
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Tapiero H, Tew KD. Trace elements in human physiology and pathology: zinc and metallothioneins. Biomed Pharmacother 2004; 57:399-411. [PMID: 14652165 DOI: 10.1016/s0753-3322(03)00081-7] [Citation(s) in RCA: 498] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Zinc is one of the most abundant nutritionally essential elements in the human body. It is found in all body tissues with 85% of the whole body zinc in muscle and bone, 11% in the skin and the liver and the remaining in all the other tissues. In multicellular organisms, virtually all zinc is intracellular, 30-40% is located in the nucleus, 50% in the cytoplasm, organelles and specialized vesicles (for digestive enzymes or hormone storage) and the remainder in the cell membrane. Zinc intake ranges from 107 to 231 micromol/d depending on the source, and human zinc requirement is estimated at 15 mg/d. Zinc has been shown to be essential to the structure and function of a large number of macromolecules and for over 300 enzymic reactions. It has both catalytic and structural roles in enzymes, while in zinc finger motifs, it provides a scaffold that organizes protein sub-domains for the interaction with either DNA or other proteins. It is critical for the function of a number of metalloproteins, inducing members of oxido-reductase, hydrolase ligase, lyase family and has co-activating functions with copper in superoxide dismutase or phospholipase C. The zinc ion (Zn(++)) does not participate in redox reactions, which makes it a stable ion in a biological medium whose potential is in constant flux. Zinc ions are hydrophilic and do not cross cell membranes by passive diffusion. In general, transport has been described as having both saturable and non-saturable components, depending on the Zn(II) concentrations involved. Zinc ions exist primarily in the form of complexes with proteins and nucleic acids and participate in all aspects of intermediary metabolism, transmission and regulation of the expression of genetic information, storage, synthesis and action of peptide hormones and structural maintenance of chromatin and biomembranes.
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Affiliation(s)
- Haim Tapiero
- Université de Paris - Faculté de Pharmacie CNRS UMR 8612, 5, rue Jean-Baptiste-Clément, 94200, Chatenay-Malabry, France.
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Abstract
A atividade física intensa aumenta a formação de espécies reativas de oxigênio que podem causar lesões musculares e danos na membrana de eritrócitos, prejudicando o desempenho de atletas. Para prevenir os efeitos causados pelo estresse oxidativo, o organismo possui vários mecanismos antioxidantes, alguns dependentes de zinco. As propriedades antioxidantes desse mineral são explicadas pelo seu papel na regulação da síntese da metalotioneína, na estrutura da enzima superóxido dismutase e na proteção de agrupamentos sulfidrila de proteínas de membranas celulares por antagonismo com metais pró-oxidantes como ferro e cobre. Estudos têm demonstrado que a fragilidade osmótica de eritrócitos está relacionada à função do zinco na membrana celular. Atletas geralmente apresentam ingestão dietética desse mineral insuficiente para compensar as perdas aumentadas pelo suor e urina e para atender a demanda bioquímica. Este trabalho de revisão visa mostrar a importância biológica e nutricional do zinco na proteção antioxidante durante a atividade física intensa.
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Sena KCD, Arrais RF, Brito TN, Almeida MDG, Pedrosa LF. Efeito da suplementação com zinco sobre a zincúria de pacientes com diabetes tipo 1. ACTA ACUST UNITED AC 2003. [DOI: 10.1590/s0004-27302003000500011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neste estudo foi investigado o efeito da suplementação oral de zinco (Zn) em crianças e adolescentes com diabetes (DM), avaliando o controle metabólico da doença e concentrações de Zn na urina. A amostra foi constituída por 20 pacientes com DM tipo 1, os quais foram comparados com um grupo controle (n=17). O controle metabólico foi avaliado pela glicemia de jejum, glicosúria 24h e HbA1c. As concentrações de Zn foram investigadas na urina de 24h antes (T1) e após a suplementação (T2). Após a 1a coleta de dados dos pacientes com DM1 (T1), teve início a suplementação oral com Zn bis-glicina quelato sem sabor, por um período de 4 meses. As doses foram estabelecidas baseadas nas Dietary Reference Intakes. Os resultados evidenciaram um controle metabólico insatisfatório da doença, devido ao aumento da HbA1c de alguns pacientes, após a suplementação. A excreção urinária de Zn foi maior nos pacientes com DM1 e esteve correlacionado positivamente com o tempo de doença e HbA1c. A suplementação com Zn não corrigiu a heterogeneidade na variação circadiana da zincúria nos pacientes estudados, sugerindo que o controle metabólico inadequado no DM predispõe a distúrbios no metabolismo do Zn, independente da fonte, alimentar ou medicamentosa.
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Abstract
The study was conducted to determine whether zinc supplementation could alleviate the detrimental effects of high ambient temperature (34 degrees C) on egg production, digestibility of nutrients and antioxidant status in laying Japanese quail. Quail (n = 180; 52 d old) were divided into six groups (n = 30/group) and were fed a basal diet or the basal diet supplemented with 30 or 60 mg of zinc (ZnSO(4). H(2)O)/kg diet. Birds were kept at 22 degrees C and 58% relative humidity (RH). At 13 wk of age, the thermoneutral (TN) groups remained at the same temperature, whereas the heat-stress (HS) groups were kept in an environmentally controlled room at 34 degrees C and 42% RH for 3 wk. Heat exposure decreased egg production in birds fed the basal diet (P = 0.001). Linear increases in feed intake (P = 0.01) and egg production (P = 0.004) and improved feed efficiency (P = 0.01) and egg quality variables (P <or= 0.05) occurred in zinc-supplemented groups reared under HS conditions. Heat exposure decreased digestibility of nutrients (P = 0.001), and these decreases were ameliorated by zinc supplementation (P <or= 0.05). Serum vitamin C (P = 0.05), vitamin E (P = 0.01) and zinc (P = 0.001) concentrations increased linearly, whereas malondialdehyde concentrations decreased (P = 0.002) as dietary zinc supplementation increased. No significant differences in any values were observed in the TN groups (P > 0.05). Results of the present study suggest that supplementation with 60 mg zinc/kg diet protects quail by reducing the negative effects of heat stress.
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Affiliation(s)
- Kazim Sahin
- Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, Elazig Turkey.
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Ito A, Kawamura H, Otsuka M, Ikeuchi M, Ohgushi H, Ishikawa K, Onuma K, Kanzaki N, Sogo Y, Ichinose N. Zinc-releasing calcium phosphate for stimulating bone formation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2002. [DOI: 10.1016/s0928-4931(02)00108-x] [Citation(s) in RCA: 166] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Fanzo JC, Reaves SK, Cui L, Zhu L, Lei KY. p53 protein and p21 mRNA levels and caspase-3 activity are altered by zinc status in aortic endothelial cells. Am J Physiol Cell Physiol 2002; 283:C631-8. [PMID: 12107073 DOI: 10.1152/ajpcell.00248.2001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The influence of zinc status on the levels of p53, as well as downstream targets of p53 in cell repair and survival, was examined in human aortic endothelial cells (HAECs). A serum-reduced low-zinc medium (ZD) was used to deplete zinc over one passage. Other treatments included zinc-normal control (ZN), zinc-adequate (ZA), and zinc-supplemented (ZS) treatment with 3.0, 16.0, and 32.0 microM zinc, respectively. Cellular zinc levels in the ZD cells were 64% of ZN controls; levels in the ZA cells were not different, but levels in ZS cells were significantly higher (40%) than in ZN cells. No difference in p53 mRNA abundance was detected among all treatments; however, p53 nuclear protein levels were >100% higher in the ZD and ZS cells and almost 200% higher in the ZA cells than in ZN controls. In addition, p21 mRNA abundance, a downstream target of p53 protein, was increased in the ZS cells compared with both the ZN control and ZD cells. In the ZS cells, bax and mcl-1 were also approximately 50% higher compared with ZN controls, whereas bcl-2 mRNA was increased compared with ZA cells. Moreover, caspase-3 activity of ZD cells was not different from that of ZN controls but was reduced to 83 and 69% of ZN controls in ZA and ZS cells, respectively. Thus p53 protein and p53 downstream target genes appeared to be modulated by intracellular zinc status in HAECs.
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Affiliation(s)
- Jessica C Fanzo
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona 85721, USA
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Candan F, Gültekin F, Candan F. Effect of vitamin C and zinc on osmotic fragility and lipid peroxidation in zinc-deficient haemodialysis patients. Cell Biochem Funct 2002; 20:95-8. [PMID: 11979503 DOI: 10.1002/cbf.947] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Peroxidation of the membrane lipid structure of red blood cell leads to haemolysis and anaemia in haemodialysis patients. Dietary constituents of antioxidant vitamins and trace elements may play an important role in protecting against oxidant damage. In this study, the effects of supplementation of vitamin C and zinc on osmotic fragility and lipid peroxidation of erythrocytes were investigated in 34 zinc-deficient haemodialysis patients. Sixteen sex- and age-matched normal volunteers acted as controls. Patients were randomized to receive vitamin C (250 mg day(-1)), zinc (20 mg day(-1)) or a placebo treatment for 3 months. The levels of vitamin C, zinc, malondialdehyde (MDA) and osmotic fragility were measured initially and 3 months after supplementation. Mean serum concentration of vitamin C and zinc increased significantly in the groups at the end of the respective study periods. Supplementation with vitamin C and zinc improved osmotic fragility, and decreased the level of MDA in the groups, but some side-effects (i.e. nausea, vomiting, fever, muscle pain, weakness) were observed during the zinc treatment. The results showed that the supplementation of both treatments decreased osmotic fragilty and MDA in zinc-deficient haemodialysis patients. However, vitamin C treatment was found to be safer than zinc supplementation.
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Affiliation(s)
- Ferda Candan
- University of Cumhuriyet, Faculty of Science and Art, Department of Chemistry, Sivas, Turkey.
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41
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Abstract
Potential mechanisms underlying zinc's capacity to protect membranes from lipid oxidation were examined in liposomes. Using lipid oxidation initiators with different chemical and physical properties (transition metals, lipid- or water-soluble azo compounds, ultraviolet radiation c (UVc), superoxide radical anion (O2*-), and peroxynitrite (ONOO-) we observed that zinc only prevented copper (Cu2+)- and iron (Fe2+)-initiated lipid oxidation. In the presence of Fe2+, the antioxidant action of zinc depended directly on the negative charge density of the membrane bilayer. An inverse correlation (r2: 0.96) was observed between the capacity of zinc to prevent iron binding to the membrane and the inhibitory effect of zinc on Fe2+-initiated lipid oxidation. The interaction of zinc with the bilayer did not affect physical properties of the membrane, including rigidification and lateral phase separation known to increase lipid oxidation rates. The interactions between zinc and the lipid- (alpha-tocopherol) and water- (epicatechin) soluble antioxidants were studied. The inhibition of Fe2+-induced lipid oxidation by either alpha-tocopherol or epicatechin was increased by the simultaneous addition of zinc. The combined actions of alpha-tocopherol (0.01 mol%), epicatechin (0.5 microM) and zinc (5-50 microM) almost completely prevented Fe2+ (25 microM)-initiated lipid oxidation. These results show that zinc can protect membranes from iron-initiated lipid oxidation by occupying negatively charged sites with potential iron binding capacity. In addition, the synergistic actions of zinc with lipid and water-soluble antioxidants to prevent lipid oxidation, suggests that zinc is a pivotal component of the antioxidant defense network that protects membranes from oxidation.
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Affiliation(s)
- M P Zago
- Instituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
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Noh SK, Koo SI. Enteral infusion of phosphatidylcholine increases the lymphatic absorption of fat, but lowers alpha-tocopherol absorption in rats fed a low zinc diet*. J Nutr Biochem 2001; 12:330-337. [PMID: 11516636 DOI: 10.1016/s0955-2863(01)00145-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Our previous study has shown that the lymphatic absorption of both fat and alpha-tocopherol (alphaTP) is lowered markedly in rats fed a low zinc diet, with a parallel decrease in lymphatic phospholipid (PL) output. This study was conducted to determine if enteral infusion of phosphatidylcholine (PC) could restore lymphatic absorption of fat and alphaTP in zinc-deficient rats. One group of rats was fed an AIN-93G diet containing 3 mg Zn/kg (low zinc; LZ) and the other was fed the same diet but containing 30 mg Zn/kg (adequate zinc; AZ). Rats were trained to consume two meals daily of equal amounts of food. At 6 wk, each rat with lymph fistula was infused at 3 mL/h with a lipid emulsion containing 3.6 &mgr;mol alphaTP and 565 &mgr;mol [carboxyl-14C]-triolein (14C-OA), with or without 40 &mgr;mol 1,2-dilinoleoyl-PC in 24 mL PBS at pH 6.4. The lymphatic absorptions of fat and alphaTP were determined by measuring 14C-radioactivity and alphaTP appearing in the mesenteric lymph collected hourly for 8 h. When the emulsion devoid of PC was infused, the absorptions of both 14C-OA (41 +/- 4% dose) and alphaTP (431 +/- 55 nmol) in LZ rats were significantly lower than in AZ rats (48 +/- 2% 14C-OA dose and 581 +/- 70 nmol alphaTP). When the emulsion containing PC was infused, the absorption of 14C-OA was restored rapidly to normal in LZ rats, along with a parallel increase in lymphatic PL output. However, PC infusion further lowered the absorption of alphaTP to 311 +/- 20 nmol/8 h in LZ rats and also lowered the absorption of alphaTP in AZ rats (347 +/- 48 nmol/8 h). The results demonstrate that low zinc intake results in impaired intestinal absorption of both alphaTP and fat. The findings also indicate that PC significantly improves the intestinal absorption of fat, but inhibits alphaTP absorption, suggesting that PC affects the intestinal absorption of alphaTP and fat via distinctly different mechanisms.
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Affiliation(s)
- S K. Noh
- Department of Human Nutrition, Kansas State University, 66506, Manhattan, KS, USA
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Abstract
Zinc, a trace element that influences cell metabolism through a variety of mechanisms, appears to play an integral role in maintaining normal ocular function. This element is present in high concentrations in ocular tissue, particularly in retina and choroid. Zinc deficiency has been shown in a number of species to result in a variety of gross, ultrastructural and electrophysiologic ocular manifestations. The physiological functions for zinc have been studied predominantly in retina and retinal pigment epithelium where zinc is believed to interact with taurine and vitamin A. modify photoreceptor plasma membranes, regulate the light-rhodopsin reaction, modulate synaptic transmission and serve as an antioxidant. Suboptimal zinc status in North America may influence the development and progression of several chronic eye diseases. Zinc supplementation trials and epidemiological studies have produced conflicting results concerning the role of zinc in age-related macular degeneration. Additional well-controlled supplementation trials are indicated to clarify the role of zinc in this disease. Future investigations must also expand our understanding of the mechanisms by which zinc regulates ocular morphology and function.
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Affiliation(s)
- B H Grahn
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada.
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Lastra MD, Pastelin R, Camacho A, Monroy B, Aguilar AE. Zinc intervention on macrophages and lymphocytes response. J Trace Elem Med Biol 2001; 15:5-10. [PMID: 11603828 DOI: 10.1016/s0946-672x(01)80019-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Normal zinc levels are essential for the development and maintenance of immune functions; Zn deficiency is detrimental to the embryo and offspring of experimental animals, especially concerning immune development. It is known that Zn supplementation improves immune responses. To further explore the relation between Zn administration and the metal in vitro effects, we studied zinc (500 mg/l) supplementation impact on lymphocytes and macrophages and zinc in vitro effects, in BALB/c mice supplemented from gestation to lactation. Results show a significant increase in proliferation (assessed by 3H incorporation) in lymphocytes exposed to Zn (0.1 mM) in vitro, in 3-wk-old mice; this effect is annulled when the supplementation period is lengthened, indicating saturation of the mechanisms involved in zinc induced stimulation. Macrophages functional capacity assessed by erythrophagocytosis was also improved by Zn supplementation and furthermore by the in vitro exposure to the metal, in mice 3 wk old, this was also depressed by Zn accumulation due to the supplementation period extension (9 weeks). Results show an improvement in the immune parameters analysed due to zinc supplementation and to zinc in vitro exposure. Results also suggest the accumulation of zinc as a result of prolonged supplementation periods, suppresses the cells response to zinc in vitro.
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Affiliation(s)
- M D Lastra
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de Mexico, Mexico, DF
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Oteiza PI, Clegg MS, Keen CL. Short-term zinc deficiency affects nuclear factor-kappab nuclear binding activity in rat testes. J Nutr 2001; 131:21-6. [PMID: 11208933 DOI: 10.1093/jn/131.1.21] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We reported previously that feeding zinc-deficient diets for 14 d altered the oxidant defense system in the testes of young male rats and increased levels of lipid, protein and DNA oxidation in this tissue. In this study, we investigated the early involvement of oxidative stress in zinc deficiency-induced testicular pathology. Weanling male rats (17 d old) were given free access to a control (25 microg Zn/g) or a zinc-deficient (0.5 microg Zn/g) diet, or restricted access to the control diet at a level of intake similar to that of rats fed the 0.5 microg Zn/g diet (restricted group) for 7 d. Rats fed the low zinc diet were characterized by low testes zinc and alkaline phosphatase activity compared with ad libitum and restricted controls. Testes protein and lipid oxidation variables did not differ among the groups. Higher than normal (P < 0.05) activities of CuZn (CuZnSOD) and Mn (MnSOD) superoxide dismutases were observed in the low zinc group. Glutathione peroxidase and glutathione reductase activities did not differ among the groups. Total glutathione concentrations were lower in the low zinc and restricted groups than in the control group (P < 0.05). The testes nuclear binding activities of two transcription factors sensitive to oxidants [nuclear factor (NF)-kappaB and AP-1] were assessed. AP-1 nuclear binding activity did not differ among the groups, but NF-kappaB nuclear binding activity was lower in the low zinc group than in the control groups (P < 0.05). We suggest that the reduction in NF-kappaB binding reflects an early response to zinc deficiency-induced oxidative stress.
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Affiliation(s)
- P I Oteiza
- Instituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Argentina.
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47
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Mocchegiani E, Giacconi R, Muzzioli M, Cipriano C. Zinc, infections and immunosenescence. Mech Ageing Dev 2000; 121:21-35. [PMID: 11164457 PMCID: PMC7126297 DOI: 10.1016/s0047-6374(00)00194-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2000] [Revised: 07/25/2000] [Accepted: 08/12/2000] [Indexed: 10/25/2022]
Abstract
Infections may cause mortality in old age due to damaged immune responses. As zinc is required as a catalyst, structural (zinc fingers) and regulatory ion, it is involved in many biological functions, including immune responses. Low zinc ion bioavailability and impaired cell-mediated immunity are common in ageing and may be restored by physiological supplementation with zinc for 1-2 months, impacting upon morbidity and survival. This article reviews the role of zinc in immune efficacy during ageing, and also describes the main biochemical pathways involved in the role of zinc in resistance to infections in ageing in order to better understand the possible causes of immunosenescence.
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Affiliation(s)
- E Mocchegiani
- Immunology Centre (Section Nutrition, Immunity and Ageing) Research Department Nino Masera, Italian National Research Centres on Ageing (I.N.R.C.A.), Via Birarelli 8, 60121 Ancona, Italy.
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48
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Abstract
Zn is an essential trace element for all organisms. In human subjects body growth and development is strictly dependent on Zn. The nervous, reproductive and immune systems are particularly influenced by Zn deficiency, as well as by increased levels of Zn. The relationship between Zn and the immune system is complex, since there are four different types of influence associated with Zn. (1) The dietary intake and the resorption of Zn depends on the composition of the diet and also on age and disease status. (2) Zn is a cofactor in more than 300 enzymes influencing various organ functions having a secondary effect on the immune system. (3) Direct effects of Zn on the production, maturation and function of leucocytes. (4) Zn influences the function of immunostimulants used in the experimental systems. Here we summarize all four types of influence on the immune function. Nutritional aspects of Zn, the physiology of Zn, the influence of Zn on enzymes and cellular functions, direct effects of Zn on leucocytes at the cellular and molecular level, Zn-altered function of immunostimulants and the therapeutic use of Zn will be discussed in detail.
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Affiliation(s)
- L Rink
- Institute of Immunology and Transfusion Medicine, University of Lübeck School of Medicine, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
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49
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Abstract
The concentration of plasma zinc is the generally accepted index of zinc status. Although low plasma zinc is an essential criterion of deficiency, alone it is inadequate. To supplement this index, we sought to determine the first limiting biochemical defect in animals fed zinc-deficient diets and concluded that the limiting function is associated with a posttranslational change in plasma membrane proteins. Among the signs of zinc deficiency in rats is a bleeding tendency associated with failure of platelet aggregation, a phenomenon that correlates with impaired uptake of Ca(2+) when stimulated. Zinc-deficient guinea pigs exhibit signs of peripheral neuropathy, and their brain synaptic vesicles exhibit impaired Ca(2+) uptake when they are stimulated with glutamate. Red cells from zinc-deficient rats show increased osmotic fragility associated with decreased plasma membrane sulfhydryl concentration. Both phenomena are readily reversed (2 d) by dietary zinc repletion. Volume recovery is dependent on Ca-dependent K channels and the sulfhydryl redox state. Both the impaired aggregation and calcium uptake of zinc-deficient platelets are corrected by in vitro incubation of blood with glutathione. Considering the fact that plasma membranes from several cell types show impaired function that is associated with a decreased rate of calcium uptake, it is postulated that a defect in calcium channels is the first limiting biochemical defect in zinc deficiency. The calcium uptake defect and consequent impaired second-messenger function likely results from an abnormal sulfhydryl redox state in the membrane channel protein.
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Affiliation(s)
- B L O'Dell
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
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50
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Fraker PJ, King LE, Laakko T, Vollmer TL. The dynamic link between the integrity of the immune system and zinc status. J Nutr 2000; 130:1399S-406S. [PMID: 10801951 DOI: 10.1093/jn/130.5.1399s] [Citation(s) in RCA: 258] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The results of more than three decades of work indicate that zinc deficiency rapidly diminishes antibody- and cell-mediated responses in both humans and animals. The moderate deficiencies in zinc noted in sickle cell anemia, renal disease, chronic gastrointestinal disorders and acrodermatitis enteropathica; subjects with human immunodeficiency virus; children with diarrhea; and elderly persons can greatly alter host defense systems, leading to increases in opportunistic infections and mortality rates. Conversely, short periods of zinc supplementation substantially improve immune defense in individuals with these diseases. Mouse models demonstrate that 30 d of suboptimal intake of zinc can lead to 30-80% losses in defense capacity. Collectively, the data clearly demonstrate that immune integrity is tightly linked to zinc status. Lymphopenia and thymic atrophy, which were the early hallmarks of zinc deficiency, are now known to be due to high losses of precursor T and B cells in the bone marrow. This ultimately leads to lymphopenia or a failure to replenish the lymphocytic system. Glucocorticoid-mediated apoptosis induced by zinc deficiency causes down-regulation of lymphopoiesis. Indeed, zinc itself can modulate death processes in precursor lymphocytes. Finally, there is substantial evidence that zinc supplementation may well reduce the impact of many of the aforementioned diseases by preventing the dismantling of the immune system. The latter represents an important area for research.
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Affiliation(s)
- P J Fraker
- Department of Biochemistry, Michigan State University, East Lansing, MI 48824, USA
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