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Mandil R, Prakash A, Rahal A, Koli S, Kumar R, Garg SK. Evaluation of oxidative stress-mediated cytotoxicity and genotoxicity of copper and flubendiamide: amelioration by antioxidants in vivo and in vitro. Toxicol Res (Camb) 2023; 12:232-252. [PMID: 37125329 PMCID: PMC10141782 DOI: 10.1093/toxres/tfad011] [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: 07/05/2022] [Revised: 12/03/2022] [Accepted: 01/30/2023] [Indexed: 03/09/2023] Open
Abstract
Present study was designed to evaluate toxic effects of copper (Cu) (@ 33 mg/kg b.wt.) and flubendimide (Flb) (@ 200 mg/kg b.wt.) alone and/or in combination on blood-biochemical indices, oxidative stress, and drug metabolizing enzymes (DMEs) in vivo in male Wistar rats following oral exposure continuously for 90 days and their immunotoxic (cyto-genotoxic and apoptotic) potential in vitro on thymocytes. In in vivo study, ameliorative potential of α-tocopherol was assessed, whereas α-tocopherol, curcumin, resveratrol, and catechin were evaluated for protective effect in vitro. Significantly (P < 0.05) increased AST activity and increment in total bilirubin, uric acid, creatinine, and BUN levels; however, reduction in total protein, GSH content, reduced activities of SOD and GST, and increased lipid peroxidation and GPx activity with severe degenerative changes in histopathological examination of liver and kidney in group of Cu and Flb were observed. Treatment with α-tocopherol improved biochemical variables, redox status, and histoarchitecture of liver and kidney tissues. Reduced hepatic CYP450, CYPb5, APH, UGT, and GST activities observed in both Cu and α-tocopherol alone and their combination groups, whereas significant increment in Flb alone, while α-tocopherol in combination with xenobiotics improved the activities of hepatic DMEs. Primary cell culture of thymocytes (106 cells/ml) exposed to Cu and Flb each @ 40 μM increased TUNEL+ve cells, micronuclei induction, DNA shearing, and comet formation establishes their apoptotic and genotoxic potential, whereas treatment with antioxidants showed concentration-dependent significant reduction and their order of potency on equimolar concentration (10 μM) basis is: curcumin > resveratrol > catechin = α-tocopherol.
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Affiliation(s)
- Rajesh Mandil
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250110, India
| | - Atul Prakash
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250110, India
| | - Anu Rahal
- Central Institute for Research on Goat (CIRG), Makhdoom, Farah, Mathura 281122, India
| | - Swati Koli
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250110, India
| | - Rahul Kumar
- Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, U.P. Pt. Deen Dayal Upadhyay Pashu Chikitsa Vigyan Vishvidyalay Evam Go- Anushandhan Sansthan (DUVASU), Near Civil Line, Mathura 281001, India
| | - Satish K Garg
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut 250110, India
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Capriotti G, Piccardo A, Giovannelli E, Signore A. Targeting Copper in Cancer Imaging and Therapy: A New Theragnostic Agent. J Clin Med 2022; 12:jcm12010223. [PMID: 36615024 PMCID: PMC9821557 DOI: 10.3390/jcm12010223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
Copper is required for cancer cell proliferation and tumor angiogenesis. Copper-64 radionuclide (64Cu), a form of copper chloride (64CuCl2), is rapidly emerging as a diagnostic PET/CT tracer in oncology. It may also represent an interesting alternative to gallium-68 (68Ga) as a radionuclide precursor for labelling radiopharmaceuticals used to investigate neuroendocrine tumors and prostate cancer. This emerging interest is also related to the nuclear properties of 64CuCl2 that make it an ideal theragnostic nuclide. Indeed, 64CuCl2 emits β+ and β- particles together with high-linear-energy-transfer Auger electrons, suggesting the therapeutic potential of 64CuCl2 for the radionuclide cancer therapy of copper-avid tumors. Recently, 64CuCl2 was successfully used to image prostate cancer, bladder cancer, glioblastoma multiforme (GBM), and non-small cell lung carcinoma in humans. Copper cancer uptake was related to the expression of human copper transport 1 (hCTR1) on the cancer cell surface. Biodistribution, toxicology and radiation safety studies showed its radiation and toxicology safety. Based on the findings from the preclinical research studies, 64CuCl2 PET/CT also holds potential for the diagnostic imaging of human hepatocellular carcinoma (HCC), malignant melanoma, and the detection of the intracranial metastasis of copper-avid tumors based on the low physiological background of radioactive copper uptake in the brain.
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Affiliation(s)
- Gabriela Capriotti
- Department of Medical-Surgical Sciences and of Translational Medicine, Sapienza University of Rome, Nuclear Medicine Unit Sant’Andrea University Hospital, 00189 Rome, Italy
- Correspondence:
| | - Arnoldo Piccardo
- S.C. Medicina Nucleare Ente Ospedaliero “Ospedali Galliera”, 16128 Genova, Italy
| | - Elena Giovannelli
- Department of Medical-Surgical Sciences and of Translational Medicine, Sapienza University of Rome, Nuclear Medicine Unit Sant’Andrea University Hospital, 00189 Rome, Italy
| | - Alberto Signore
- Department of Medical-Surgical Sciences and of Translational Medicine, Sapienza University of Rome, Nuclear Medicine Unit Sant’Andrea University Hospital, 00189 Rome, Italy
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Mendoza DJ, Maliha M, Raghuwanshi VS, Browne C, Mouterde LMM, Simon GP, Allais F, Garnier G. Diethyl sinapate-grafted cellulose nanocrystals as nature-inspired UV filters in cosmetic formulations. Mater Today Bio 2021; 12:100126. [PMID: 34522878 PMCID: PMC8424589 DOI: 10.1016/j.mtbio.2021.100126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/03/2021] [Accepted: 08/06/2021] [Indexed: 11/24/2022] Open
Abstract
Inspired by nature’s photoprotection mechanisms, we report an effective UV-blocking nanomaterial based on diethyl sinapate-grafted cellulose nanocrystals (CNC-DES). The colloidal stability and UV-blocking performance of CNC-DES in aqueous glycerol (a common humectant in petroleum-free cosmetic formulations) and in a commercially available moisturizing cream were studied. Grafting the water-insoluble DES onto CNCs renders it dispersible in these water-based formulations, thanks to the excellent water-dispersibility of CNC nanoparticles. Glycerol dispersions containing 0.1 to 1.5 wt% CNC-DES display very high UV-blocking activity owing to the anti-UV DES moieties anchored onto CNCs. A facial cream blended with 1.5 wt% CNC-DES exhibits an SPF of 5.03, which is higher than a commercially available sunscreen with the same active ingredient concentration (SPF = 3.84). DPPH radical scavenging assay also showed the antioxidant potential of CNC-DES, albeit coinciding with a significant reduction in antioxidant activity after grafting DES onto CNCs. Cytotoxicity measurements revealed the CNC-DES not to cause significant cytotoxicity to murine fibroblast cells after 24 h of exposure. Overall, CNC-DES exhibits strong anti-UV and antioxidant properties and is water-dispersible, biocompatible, non-greasy, and lightweight. This study demonstrates the exceptional potential of DES-grafted CNCs as nature-inspired UV filters in the next generation of cosmetic formulations, including those for sensitive skins.
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Affiliation(s)
- D J Mendoza
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - M Maliha
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - V S Raghuwanshi
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - C Browne
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - L M M Mouterde
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
| | - G P Simon
- 14 Alliance Lane (Building 72), Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
| | - F Allais
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.,URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
| | - G Garnier
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.,URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
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Fan Q, Bao G, Ge D, Wang K, Sun M, Liu T, Liu J, Zhang Z, Xu X, Xu X, He B, Rao J, Zheng Y. Effective easing of the side effects of copper intrauterine devices using ultra-fine-grained Cu-0.4Mg alloy. Acta Biomater 2021; 128:523-539. [PMID: 33905947 DOI: 10.1016/j.actbio.2021.04.037] [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: 12/14/2020] [Revised: 04/11/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022]
Abstract
Copper intrauterine device is one of the most adopted contraceptive methods with high effectiveness (over 99 %), low cost, spontaneous reversibility and long-lasting usage. However, the side effects induced from the initial burst release of copper ions (Cu2+) hinder the continuation of the Cu-IUD made of Coarse-Grained Copper (CG Cu). We proposed to tailor the bio-corrosion behaviors of better control of Cu2+ release via the addition of bioactive Mg into the Ultra-Fine Grained (UFG) Bulk Cu. Thus, UFG bulk Cu with 0.4 wt.% Mg was produced via equal-channel angular pressing. The microstructures of the UFG Cu-0.4Mg was observed using electron backscatter diffraction and transmission electron microscopy techniques. The in vitro long-term corrosion behaviors in simulated uterine fluid, cytotoxicity to four cell lines, in vivo biocompatibility and contraceptive efficacy were all studied on CG Cu, UFG Cu and UFG Cu-0.4Mg materials. The results demonstrate that both the ultrafine grains and the addition of bioactive Mg into Cu contribute to the suppression of the burst release of Cu2+ in the initial stage and the maintenance of high level Cu2+ in long-term release. Moreover, the UFG Cu-0.4Mg also exhibited much improved cell and tissue biocompatibility from both the in vitro and in vivo evaluations. Therefore, the contraceptive efficacy of UFG Cu-0.4Mg is still maintained as high as the CG Cu and UFG Cu while the side effects are significantly eased, suggesting the high potential of the UFG Cu-0.4Mg alloy as a new upgrading or alternative material for Cu-IUD. STATEMENT OF SIGNIFICANCE: The side effects from burst release of Cu2+ at the initial implantation stage of Cu-containing intrauterine devices (Cu-IUD) is one of the main drawbacks of these devices. In this work, an ultra-fine-grained Cu (UFG Cu) alloyed with a low amount of bioactive Mg was used for a Cu-IUD. The UFG Cu-0.4Mg alloy exhibited suppressed burst release of Cu2+ at initial implantation, while active Cu2+ release for long-term usage was maintained, comparable to coarse-grained pure Cu. Furthermore, the UFG Cu-0.4Mg alloy displayed significantly improved biocompatibility with human uterus cells and a much decreased inflammatory response within the uterus. Therefore, the side effects from Cu-IUD were eased, while high antifertility efficacy of the UFG Cu-0.4Mg alloy was maintained. The UFG Cu-0.4Mg alloy is promising for Cu-IUD.
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Shimada T, Yasui T, Yonese A, Yanagida T, Kaji N, Kanai M, Nagashima K, Kawai T, Baba Y. Mechanical Rupture-Based Antibacterial and Cell-Compatible ZnO/SiO 2 Nanowire Structures Formed by Bottom-Up Approaches. MICROMACHINES 2020; 11:E610. [PMID: 32599748 PMCID: PMC7345559 DOI: 10.3390/mi11060610] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 01/05/2023]
Abstract
There are growing interests in mechanical rupture-based antibacterial surfaces with nanostructures that have little toxicity to cells around the surfaces; however, current surfaces are fabricated via top-down nanotechnologies, which presents difficulties to apply for bio-surfaces with hierarchal three-dimensional structures. Herein, we developed ZnO/SiO2 nanowire structures by using bottom-up approaches and demonstrated to show mechanical rupture-based antibacterial activity and compatibility with human cells. When Escherichia coli were cultured on the surface for 24 h, over 99% of the bacteria were inactivated, while more than 80% of HeLa cells that were cultured on the surface for 24 h were still alive. This is the first demonstration of mechanical rupture-based bacterial rupture via the hydrothermally synthesized nanowire structures with antibacterial activity and cell compatibility.
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Affiliation(s)
- Taisuke Shimada
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
| | - Takao Yasui
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;
| | - Akihiro Yonese
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
| | - Takeshi Yanagida
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan;
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan;
| | - Noritada Kaji
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaki Kanai
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan;
| | - Kazuki Nagashima
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
| | - Tomoji Kawai
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan;
| | - Yoshinobu Baba
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
- Institute of Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, Anagawa 4-9-1, Inage-ku, Chiba 263-8555, Japan
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Capella Roca B, Alarcón Miguez A, Keenan J, Suda S, Barron N, O’Gorman D, Doolan P, Clynes M. Zinc supplementation increases protein titer of recombinant CHO cells. Cytotechnology 2019; 71:915-924. [PMID: 31396753 PMCID: PMC6787129 DOI: 10.1007/s10616-019-00334-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 08/01/2019] [Indexed: 12/20/2022] Open
Abstract
In order to study the impact of zinc and copper on the titer levels of mAb and recombinant protein in CHO cells, the IgG-expressing (DP12) and EPO-expressing (SK15) cell lines were cultured in chemically defined media with increasing concentrations of either metal. Supplementation with 25 mg/l in CDM media resulted in a significant increase in EPO (1.7-fold) and IgG (2.6-fold) titers compared to control (no added zinc). Titers at this Zn concentration in CDM containing the insulin replacing agent aurintricarboxylic acid (ATA) (CDM + A) showed a 1.8-fold (EPO) and 1.2-fold (IgG) titers increase compared to control. ATA appeared to also reduce the specific productivity (Qp) enhancement induced by Zn-25, with up to 4.9-fold (DP12) and 1.9-fold (SK15) Qp increase in CDM compared to the 1.6-fold (DP12) and 1.5-fold (SK15) Qp increase observed in CDM + A. A 31% reduced Viable Cell Density (VCD) in DP12 was observed in both Zn-supplemented media (3 × 106 cells/ml vs 4.2 × 106 cells/ml, day 5), whereas SK15 Zn-25 cultures displayed a 24% lower peak only in CDM + A (2.2 × 106 cells/ml vs 3.2 × 106 cells/ml, day 5). Supplementation with copper at 13.7-20 mg/l resulted in less significant cell line/product-type dependent effects on titer, VCD and Viability. Analysis of the energetic phenotype of both cell lines in 25 mg/l Zn-supplemented CDM media revealed a twofold increase in the oxygen consumption rate (OCR) compared to non-supplemented cells. Together, these data suggest that high zinc supplementation may induce an increase in oxidative respiration metabolism that results in increased Qp and titers in suspension CHO cultures.
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Affiliation(s)
- Berta Capella Roca
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
- SSPC-SFI, Centre for Pharmaceuticals, Dublin City University, Dublin 9, Ireland
| | - Antonio Alarcón Miguez
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
| | - Joanne Keenan
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
- SSPC-SFI, Centre for Pharmaceuticals, Dublin City University, Dublin 9, Ireland
| | - Srinivas Suda
- National Institute for Bioprocessing Research and Training, University College Dublin, Dublin, Ireland
| | - Niall Barron
- SSPC-SFI, Centre for Pharmaceuticals, Dublin City University, Dublin 9, Ireland
- National Institute for Bioprocessing Research and Training, University College Dublin, Dublin, Ireland
| | - Donal O’Gorman
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
| | - Padraig Doolan
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland
- SSPC-SFI, Centre for Pharmaceuticals, Dublin City University, Dublin 9, Ireland
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Gutner-Hoch E, Martins R, Maia F, Oliveira T, Shpigel M, Weis M, Tedim J, Benayahu Y. Toxicity of engineered micro- and nanomaterials with antifouling properties to the brine shrimp Artemia salina and embryonic stages of the sea urchin Paracentrotus lividus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:530-537. [PMID: 31108285 DOI: 10.1016/j.envpol.2019.05.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/30/2019] [Accepted: 05/07/2019] [Indexed: 05/24/2023]
Abstract
Antifouling booster biocides are chemicals used in protective paints to tackle the adhesion of fouling organisms to maritime artificial structures. However, they are also known to exert toxic effects on non-target organisms. Recent research developments have highlighted the potential use of engineered micro/nanomaterials (EMNMs) as carriers of antifouling booster biocides in order to control their release and to reduce the harmful effects on living biota. In the present study, we sought to assess the toxicity of two commercially-available booster biocides: (zinc pyrithione (ZnPT) and copper pyrithione (CuPT)); three unloaded engineered micro/nanomaterials (EMNMs); layered double hydroxides (LDH), silica nanocapsules (SiNC), polyurea microcapsules (PU); , and six novel EMNMs (loaded with each of the two biocides). The exposure tests were conducted on the larval stage (nauplii) of the brine shrimp Artemia salina and on two embryonic developmental stages of the European purple sea urchin Paracentrotus lividus. The findings indicate that the unloaded LDH and PU (i.e. both biocide-free EMNMs) have non/low toxic effects on both species. The unloaded SiNC, in contrast, exerted a mild toxic effect on the A. salina nauplii and P. lividus embryos. The free biocides presented different toxicity values, with ZnPT being more toxic than CuPT in the P. lividus assays. LDH-based pyrithiones demonstrated lower toxicity compared to the free forms of the state-of-the-art compounds, and constitute good candidates in terms of their antifouling efficacy.
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Affiliation(s)
- Eldad Gutner-Hoch
- School of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, 66978, Israel; Interuniversity Institute for Marine Sciences in Eilat, Eilat, Israel
| | - Roberto Martins
- Department of Biology and CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Frederico Maia
- Smallmatek - Small Materials and Technologies, Lda., Rua Canhas, 3810-075, Aveiro, Portugal
| | - Tânia Oliveira
- Smallmatek - Small Materials and Technologies, Lda., Rua Canhas, 3810-075, Aveiro, Portugal
| | - Muki Shpigel
- Interuniversity Institute for Marine Sciences in Eilat, Eilat, Israel; MorrisKahn Marine Research Station, Department of Marine Biology, Leon H. CharneySchool of Marine Sciences, University of Haifa, Haifa, Israel
| | - Michal Weis
- School of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, 66978, Israel
| | - João Tedim
- CICECO - Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Yehuda Benayahu
- School of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, 66978, Israel.
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Lino AB, McCarthy AD, Fernández JM. Evaluation of Strontium-Containing PCL-PDIPF Scaffolds for Bone Tissue Engineering: In Vitro and In Vivo Studies. Ann Biomed Eng 2018; 47:902-912. [PMID: 30560305 DOI: 10.1007/s10439-018-02183-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 12/04/2018] [Indexed: 12/19/2022]
Abstract
Bone tissue engineering (BTE) has the general objective of restoring and improving damaged bone. A very interesting strategy for BTE is to combine an adequate polymeric scaffold with an osteoinductive compound. Strontium is a divalent cation that can substitute calcium in hydroxyapatite and induce both anabolic and anti-catabolic effects in bone. On the other hand, systemic increases in Sr2+ levels can provoke adverse cardiovascular effects. In the present study we have developed a compatibilized blend of poly-ε-caprolactone (PCL) and polydiisopropyl fumarate (PDIPF) enriched with 1% or 5% Sr2+ and evaluated the applicability of these biomaterials for BTE, both in vitro and in vivo. In vitro, whereas Blend + 5% Sr2+ was pro-inflammatory and anti-osteogenic, Blend + 1% Sr2+ released very low quantities of the cation; was not cytotoxic for cultured macrophages; and showed improved osteocompatibility when used as a substratum for primary cultures of bone marrow stromal cells. In vivo, implants with Blend + 1% Sr2+ significantly increased bone tissue regeneration and improved fibrous bridging (vs. Blend alone), while neither inducing a local inflammatory response nor increased serum levels of Sr2+. These results indicate that our compatibilized blend of PCL-PDIPF enriched with 1% Sr2+ could be useful for BTE.
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Affiliation(s)
- Agustina Berenice Lino
- LIOMM (Laboratorio de Investigación en Osteopatías y Metabolismo Mineral) - Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115 (1900), La Plata, Argentina
| | - Antonio Desmond McCarthy
- LIOMM (Laboratorio de Investigación en Osteopatías y Metabolismo Mineral) - Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115 (1900), La Plata, Argentina
| | - Juan Manuel Fernández
- LIOMM (Laboratorio de Investigación en Osteopatías y Metabolismo Mineral) - Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115 (1900), La Plata, Argentina. .,Cátedra Bioquímica Patológica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Calle 47 y 115 (1900), La Plata, Argentina.
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Hu LX, Hu SF, Rao M, Yang J, Lei H, Duan Z, Xia W, Zhu C. Studies of acute and subchronic systemic toxicity associated with a copper/low-density polyethylene nanocomposite intrauterine device. Int J Nanomedicine 2018; 13:4913-4926. [PMID: 30214197 PMCID: PMC6124463 DOI: 10.2147/ijn.s169114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction The physiologic safety of devices and materials intended for clinical implantation should be evaluated. This study, a logical extension of our previous work, aimed to investigate the safety of a novel contraceptive device, the copper/low-density polyethylene nanocomposite intrauterine device (nano-Cu/LDPE IUD), through studies of its potential toxicity after acute and subchronic administration in mice and rats. Methods For the acute toxicity study, single 50 mL/kg doses of nano-Cu/LDPE IUD extracts were administered to mice via intravenous or intraperitoneal injection. General behavioral adverse effects, mortality, and body weights were evaluated for up to 72 hours. In the 13-week subchronic toxicity study, the nano-Cu/LDPE composite with 10-fold higher than the standard clinical dose was implanted subcutaneously into the dorsal skin of Wistar rats. The control group underwent a sham procedure without material insertion. Results During all acute study observation times, the biologic reactions of the mice in the nano-Cu/LDPE group did not differ from those observed in the control group. The groups did not differ statistically in terms of body weight gain, and no macroscopic changes were observed in any organs. In the subchronic study, no clinical signs of toxicity or mortality were observed in either the nano-Cu/LDPE or control group during the 13-week period. The nano-Cu/LDPE composite did not cause any alterations in body weight, food consumption, hematologic and biochemical parameters, or organ weight relative to the control for any observed sample group. Histopathologic examinations of the organs revealed normal architecture, indicating that the inserted material did not cause morphologic disturbances in the rats. Conclusion Overall, the results indicate that the nano-Cu/LDPE IUD did not induce systemic toxicity under experimental conditions of the recommended standard practices, suggesting that the novel material IUD is safe and feasible for future contraceptive applications.
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Affiliation(s)
- Li-Xia Hu
- Department of Histology and Embryology, Preclinical Medicine College, Xinxiang Medical University, Xinxiang, Henan, People's Republic of China
| | - Shi-Fu Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ;
| | - Meng Rao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ; .,Department of Reproduction and Genetics, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, People's Republic of China
| | - Jing Yang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ; .,Department of Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Hui Lei
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ; .,Department of Gynaecology and Obstetrics, Taikang Tongji Hospital, Wuhan, Hubei, People's Republic of China
| | - Zhuo Duan
- Dayu Medical Devices Co., Ltd., Jingzhou, Hubei, People's Republic of China
| | - Wei Xia
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ; .,Reproductive Medicine Center, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ;
| | - Changhong Zhu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ; .,Reproductive Medicine Center, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China, ;
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Wang H, Tang Y, Xia X, Lu Y. Role of poly(ethylene oxide) in copper-containing composite used for intrauterine contraceptive devices. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:92. [PMID: 29938314 DOI: 10.1007/s10856-018-6103-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
Copper-containing composite is a cupric ions release system to prepare a novel copper intrauterine devices (Cu-IUDs), its biocompatibility and weight of the prepared composite Cu-IUDs are directly relevant to its such side-effects as pain and bleeding. To improve its biocompatibility and reduce its weight of such a composite Cu-IUDs, a copper-containing composite based on polymer alloy of poly(ethylene oxide) (PEO) and low-density polyethylene (LDPE) is developed. Here the role of its PEO in this novel cupric ions release system is reported. The results show that its cupric ions release rate can be adjusted easily by only changing its PEO content, and it increases remarkably with the increase of its PEO content. Our study also show that this influence is caused by the improvement of its hydrophilicity and the formation of its porous structure owing to the introduction of PEO. The improvement of its hydrophilicity make it easier for the surrounding aqueous solution to infiltrate into the composite, and the formation of its porous structure provide more routes for entry of the aqueous solution and diffusion of the released cupric ions. All these results indicate that the Cu/PEO/LDPE composite is a potential material that can be used to prepare such cupric ions release micro-devices as Cu-IUDs with slighter side-effects through its smaller weight.
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Affiliation(s)
- Huan Wang
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Ying Tang
- Institute of Chemical Materials, Chinese Academy of Engineering and Physics, Mianyang, Sichuan, 621900, China
| | - Xianping Xia
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
| | - Yi Lu
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
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11
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Bierkandt FS, Leibrock L, Wagener S, Laux P, Luch A. The impact of nanomaterial characteristics on inhalation toxicity. Toxicol Res (Camb) 2018; 7:321-346. [PMID: 30090585 PMCID: PMC6060709 DOI: 10.1039/c7tx00242d] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/31/2018] [Indexed: 12/27/2022] Open
Abstract
During the last few decades, nanotechnology has evolved into a success story, apparent from a steadily increasing number of scientific publications as well as a large number of applications based on engineered nanomaterials (ENMs). Its widespread uses suggest a high relevance for consumers, workers and the environment, hence justifying intensive investigations into ENM-related adverse effects as a prerequisite for nano-specific regulations. In particular, the inhalation of airborne ENMs, being assumed to represent the most hazardous type of human exposure to these kinds of particles, needs to be scrutinized. Due to an increased awareness of possible health effects, which have already been seen in the case of ultrafine particles (UFPs), research and regulatory measures have set in to identify and address toxic implications following their almost ubiquitous occurrence. Although ENM properties differ from those of the respective bulk materials, the available assessment protocols are often designed for the latter. Despite the large benefit ensuing from the application of nanotechnology, many issues related to ENM behavior and adverse effects are not fully understood or should be examined anew. The traditional hypothesis that ENMs exhibit different or additional hazards due to their "nano" size has been challenged in recent years and ENM categorization according to their properties and toxicity mechanisms has been proposed instead. This review summarizes the toxicological effects of inhaled ENMs identified to date, elucidating the modes of action which provoke different mechanisms in the respiratory tract and their resulting effects. By linking particular mechanisms and adverse effects to ENM properties, grouping of ENMs based on toxicity-related properties is supposed to facilitate toxicological risk assessment. As intensive studies are still required to identify these "ENM classes", the need for alternatives to animal studies is evident and advances in cell-based test systems for pulmonary research are presented here. We hope to encourage the ongoing discussion about ENM risks and to advocate the further development and practice of suitable testing and grouping methods.
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Affiliation(s)
- Frank S Bierkandt
- German Federal Institute of Risk Assessment (BfR) , Department of Chemical and Product Safety , Max-Dohrn-Strasse 8-10 , 10589 Berlin , Germany . ; Tel: (+49) 30 18412-4538
| | - Lars Leibrock
- German Federal Institute of Risk Assessment (BfR) , Department of Chemical and Product Safety , Max-Dohrn-Strasse 8-10 , 10589 Berlin , Germany . ; Tel: (+49) 30 18412-4538
| | - Sandra Wagener
- German Federal Institute of Risk Assessment (BfR) , Department of Chemical and Product Safety , Max-Dohrn-Strasse 8-10 , 10589 Berlin , Germany . ; Tel: (+49) 30 18412-4538
| | - Peter Laux
- German Federal Institute of Risk Assessment (BfR) , Department of Chemical and Product Safety , Max-Dohrn-Strasse 8-10 , 10589 Berlin , Germany . ; Tel: (+49) 30 18412-4538
| | - Andreas Luch
- German Federal Institute of Risk Assessment (BfR) , Department of Chemical and Product Safety , Max-Dohrn-Strasse 8-10 , 10589 Berlin , Germany . ; Tel: (+49) 30 18412-4538
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12
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Carrascosa JP, Cotán D, Jurado I, Oropesa-Ávila M, Sánchez-Martín P, Savaris RF, Tan J, Sánchez-Alcázar JA, Tan SL, Horcajadas JA. The Effect of Copper on Endometrial Receptivity and Induction of Apoptosis on Decidualized Human Endometrial Stromal Cells. Reprod Sci 2017; 25:985-999. [DOI: 10.1177/1933719117732165] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
| | | | | | - Manuel Oropesa-Ávila
- Centro Andaluz de Biología del Desarrollo, Sevilla, Spain
- Centro de Investigación Biomédica en Red Enfermedades Raras, Instituto de Salud Carlos III, Sevilla, Spain
| | | | | | - Justin Tan
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Jose A. Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo, Sevilla, Spain
- Centro de Investigación Biomédica en Red Enfermedades Raras, Instituto de Salud Carlos III, Sevilla, Spain
| | - Seang L. Tan
- OriginElle Fertility Clinic and Women’s Health Centre, Montreal, Quebec, Canada
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, McGill University, Montreal, Quebec, Canada
| | - José Antonio Horcajadas
- Department of Molecular Biology and Chemical Engineering, University Pablo de Olavide, Sevilla, Spain
- Cooper Surgical, Trumbull, CT, USA
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13
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New evidence for disinfection, self-cleaning and pollutant degradation mediated by GF-TiO 2 -Cu mats under solar/visible light in mild oxidative conditions. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Zhao X, Liu Q, Sun H, Hu Y, Wang Z. Chronic Systemic Toxicity Study of Copper Intrauterine Devices in Female Wistar Rats. Med Sci Monit 2017; 23:3961-3970. [PMID: 28813370 PMCID: PMC5569927 DOI: 10.12659/msm.902137] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background The aim of this study was to evaluate the chronic systemic and local toxicity of a copper intrauterine device in a rat model. Material/Methods Cu-IUD fragments were inserted into the uterine horns of female Wistar rats for 26 weeks (equivalent 15.42–17.33 years in humans). We tested copper at 20, 40, and 60 times the clinical dosages to study copper toxicity under severe conditions. Classic chronic systemic toxicity evaluations, including body weight, hematology, organ coefficient, and tissue reactions, were performed. Results The body weight of the rats increased during the 26 weeks, which showed that the Cu-IUD implant had no effect on animal growth. Histological examinations and organ coefficients of the uterus and other major organs indicated no obvious systemic or local impairment. Blood tests confirmed that the hepatic and renal functions remained normal. Conclusions These results obtained at different dosages and long-term implantation provide solid data confirming the safety of long-term use of Cu-IUDs. However, the elevated leucocyte levels found in this study warrant further investigation.
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Affiliation(s)
- Xia Zhao
- Center for Reproductive Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China (mainland)
| | - Qian Liu
- Jiangsu Province Institute for Medical Equipment Testing, Nanjing, Jiangsu, China (mainland)
| | - Haixiang Sun
- Center for Reproductive Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China (mainland)
| | - Yali Hu
- Center for Reproductive Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China (mainland)
| | - Zhaoxu Wang
- Testing Department of Biomaterials, Chinese National Institutes for Food and Drug Control, Beijing, China (mainland)
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15
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Li Y, Kang ZL, Qiao N, Hu LM, Ma YJ, Liang XH, Liu JL, Yang ZM. Effects of Excess Copper Ions on Decidualization of Human Endometrial Stromal Cells. Biol Trace Elem Res 2017; 177:10-15. [PMID: 27726061 DOI: 10.1007/s12011-016-0840-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/29/2016] [Indexed: 12/27/2022]
Abstract
The aim of this study was to investigate the effects of copper ions on decidualization of human endometrial stromal cells (HESCs) cultured in vitro. Firstly, non-toxic concentrations of copper D-gluconate were screened in HESCs based on cell activity. Then, the effects of non-toxic concentrations of copper ions (0~250 μM) were examined on decidualization of human endometrial stromal cells. Our data demonstrated that the mRNA expressions of insulin-like growth factor binding protein (IGFBP-1), prolactin (PRL), Mn-SOD, and FOXO1were down-regulated during decidualization following the treatments with 100 or 250 μM copper ions. Meanwhile, the amount of malonaldehyde (MDA) in the supernatant of HESCs was increased. These results showed that in vitro decidualization of HESCs was impaired by copper treatment.
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Affiliation(s)
- Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, 510642, China
| | - Zhen-Long Kang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Na Qiao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Lian-Mei Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yong-Jiang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xiao-Huan Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Ji-Long Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zeng-Ming Yang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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16
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Chakravarty R, Chakraborty S, Dash A. 64Cu2+ Ions as PET Probe: An Emerging Paradigm in Molecular Imaging of Cancer. Mol Pharm 2016; 13:3601-3612. [DOI: 10.1021/acs.molpharmaceut.6b00582] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rubel Chakravarty
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Sudipta Chakraborty
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Ashutosh Dash
- Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
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17
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Morozesk M, Bonomo MM, Rocha LD, Duarte ID, Zanezi ERL, Jesus HC, Fernandes MN, Matsumoto ST. Landfill leachate sludge use as soil additive prior and after electrocoagulation treatment: A cytological assessment using CHO-k1 cells. CHEMOSPHERE 2016; 158:66-71. [PMID: 27243586 DOI: 10.1016/j.chemosphere.2016.05.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/05/2016] [Accepted: 05/17/2016] [Indexed: 06/05/2023]
Abstract
Electrocoagulation has recently attracted attention as a potential technique for treating toxic effluents due to its versatility and environmental compatibility, generating a residue chemically suitable to be used as a soil additive. In the present study, landfill leachate sludge hazardous effects were investigated prior and after electrocoagulation process using in vitro assays with the mammalian cells CHO-k1. An integrated strategy for risk assessment was used to correctly estimate the possible adverse landfill leachate sludge effects on human health and ecosystem. Electrocoagulation process proved to be an effective treatment due to possibility to improve effluent adverse characteristics and produce sludge with potential to be used as soil additive. Despite low cytoxicity, the residue presented genotoxic and mutagenic effects, indicating a capacity to induce genetic damages, probably due to induction of polyploidization process in cells. The observed effects demand an improvement of waste management methods for reduce negative risks of landfill leachate sludge application.
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Affiliation(s)
- M Morozesk
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - M M Bonomo
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - L D Rocha
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - I D Duarte
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - E R L Zanezi
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - H C Jesus
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - M N Fernandes
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos - UFSCar, CEP 13565-905, São Carlos, São Paulo, Brazil.
| | - S T Matsumoto
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
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18
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Bonomo MM, Morozesk M, Duarte ID, Rocha LD, Fernandes MN, Matsumoto ST. Sewage sludge hazardous assessment: chemical evaluation and cytological effects in CHO-k1 cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:11069-11075. [PMID: 26906003 DOI: 10.1007/s11356-016-6201-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
Application of sewage sludge in agricultural lands is a growing practice in several countries due to its numerous benefits to soil and crops, where chemical and pathogen levels are determined by corresponding legislation. However, the presence of contaminants in residues must always be controlled before application due to their dangerous effects over the ecosystem and potential risks to human health. The main objective of this study was to integrate biological and chemical analysis in order to help elucidating the residue potential toxic, cytotoxic, and mutagenic effects. We evaluate samples of sewage sludge before and after the sanitizing treatment with lime in cytokinesis-block assay using CHO-k1 culture cells. The sanitizing treatment promoted a decrease in pathogen levels, which is the main purpose of this process. Even with chemical levels below the established by environmental agencies, results showed sewage sludge ability to enhance genotoxic and mutagenic effects, proving that residue should be handled with caution in order to minimize its environmental and human risk.
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Affiliation(s)
- M M Bonomo
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo (UFES), CEP 29075-910, Av. Fernando Ferrari, n 514, Vitoria, Espirito Santo, Brazil
| | - M Morozesk
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo (UFES), CEP 29075-910, Av. Fernando Ferrari, n 514, Vitoria, Espirito Santo, Brazil
| | - I D Duarte
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo (UFES), CEP 29075-910, Av. Fernando Ferrari, n 514, Vitoria, Espirito Santo, Brazil
| | - L D Rocha
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo (UFES), CEP 29075-910, Av. Fernando Ferrari, n 514, Vitoria, Espirito Santo, Brazil
| | - M N Fernandes
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), CEP 13565-905, São Carlos, São Paulo, Brazil
| | - S T Matsumoto
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo (UFES), CEP 29075-910, Av. Fernando Ferrari, n 514, Vitoria, Espirito Santo, Brazil.
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19
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Cytotoxicity of corrosion products of degradable Fe-based stents: relevance of pH and insoluble products. Colloids Surf B Biointerfaces 2015; 128:480-488. [PMID: 25797480 DOI: 10.1016/j.colsurfb.2015.02.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 02/18/2015] [Accepted: 02/25/2015] [Indexed: 11/23/2022]
Abstract
Fe-based biodegradable metallic materials (Fe-BMMs) have been proposed for cardiovascular applications and are expected to disappear via corrosion after an appropriate period. However, in vivo studies showed that Fe ions release leads to accumulation of orange and brownish insoluble products at the biomaterial/cell interface. As an additional consequence, sharp changes in pH may affect the biocompatibility of these materials. In the present work, the experimental protocols were designed with the aim of evaluating the relative importance that these factors have on biocompatibility evaluation of BMMs. Mitochondrial activity (MTT assay) and thiobarbituric acid reactive substances (TBARS) assay on mammalian cells, exposed to 1-5 mM of added Fe3+ salt, were assessed and compared with results linked exclusively to pH effects. Soluble Fe concentration in culture medium and intracellular Fe content were also determined. The results showed that: (i) mitochondrial activity was affected by pH changes over the entire range of concentrations of added Fe3+ assayed, (ii) at the highest added Fe3+ concentrations (≥3 mM), precipitation was detected and the cells were able to incorporate the precipitate, that seems to be linked to cell damage, (iii) the extent of precipitation depends on the Fe/protein concentration ratio; and (iv) lipid peroxidation products were detected over the entire range of concentrations of added Fe3+. Hence, a new approach opens in the biocompatibility evaluation of Fe-based BMMs, since the cytotoxicity would not be solely a function of released (and soluble) ions but of the insoluble degradation product amount and the pH falling at the biomaterial/cell interface. The concentration of Fe-containing products at the interface depends on diffusional conditions in a very complex way that should be carefully analyzed in the future.
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20
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In vitro release of cupric ion from intrauterine devices: influence of frame, shape, copper surface area and indomethacin. Biomed Microdevices 2015; 17:19. [DOI: 10.1007/s10544-014-9924-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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21
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Chakravarty R, Chakraborty S, Vimalnath KV, Shetty P, Sarma HD, Hassan PA, Dash A. 64CuCl2 produced by direct neutron activation route as a cost-effective probe for cancer imaging: the journey has begun. RSC Adv 2015. [DOI: 10.1039/c5ra17266g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Neutron activated 64CuCl2 is a cost-effective PET probe for non-invasive visualization of various types of cancers.
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Affiliation(s)
- Rubel Chakravarty
- Isotope Production and Applications Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Sudipta Chakraborty
- Isotope Production and Applications Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - K. V. Vimalnath
- Isotope Production and Applications Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Priyalata Shetty
- Isotope Production and Applications Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Haladhar Dev Sarma
- Radiation Biology and Health Sciences Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - P. A. Hassan
- Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Ashutosh Dash
- Isotope Production and Applications Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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22
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Tiwari M, Narayanan K, Thakar MB, Jagani HV, Venkata Rao J. Biosynthesis and wound healing activity of copper nanoparticles. IET Nanobiotechnol 2014; 8:230-7. [DOI: 10.1049/iet-nbt.2013.0052] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Mradul Tiwari
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal UniversityManipal 576104India
| | - Kasinathan Narayanan
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal UniversityManipal 576104India
| | - Mitali B. Thakar
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal UniversityManipal 576104India
| | - Hitesh V. Jagani
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal UniversityManipal 576104India
| | - Josyula Venkata Rao
- Department of Pharmaceutical BiotechnologyManipal College of Pharmaceutical SciencesManipal UniversityManipal 576104India
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23
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Hu LX, Wang H, Rao M, Zhao XL, Yang J, Hu SF, He J, Xia W, Liu H, Zhen B, Di H, Xie C, Xia X, Zhu C. Alterations in the endometrium of rats, rabbits, and Macaca mulatta that received an implantation of copper/low-density polyethylene nanocomposite. Int J Nanomedicine 2014; 9:1127-38. [PMID: 24596465 PMCID: PMC3940689 DOI: 10.2147/ijn.s56756] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A copper/low-density polyethylene nanocomposite (nano-Cu/LDPE), a potential intrauterine device component material, has been developed from our research. A logical extension of our previous work, this study was conducted to investigate the expression of plasminogen activator inhibitor 1 (PAI-1), substance P (SP), and substance P receptor (SP-R) in the endometrium of Sprague Dawley rats, New Zealand White rabbits, and Macaca mulatta implanted with nano-Cu/LDPE composite. The influence of the nano-Cu/LDPE composite on the morphology of the endometrium was also investigated. Animals were randomly divided into five groups: the sham-operated control group (SO group), bulk copper group (Cu group), LDPE group, and nano-Cu/LDPE groups I and II. An expression of PAI-1, SP, and SP-R in the endometrial tissues was examined by immunohistochemistry at day 30, 60, 90, and 180 postimplantation. The significant difference for PAI-1, SP, and SP-R between the nano-Cu/LDPE groups and the SO group (P<0.05) was identified when the observation period was terminated, and the changes of nano-Cu/LDPE on these parameters were less remarkable than those of the Cu group (P<0.05). The damage to the endometrial morphology caused by the nano-Cu/LDPE composite was much less than that caused by bulk copper. The nano-Cu/LDPE composite might be a potential substitute for conventional materials for intrauterine devices in the future because of its decreased adverse effects on the endometrial microenvironment.
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Affiliation(s)
- Li-Xia Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Hong Wang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Meng Rao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Xiao-Ling Zhao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jing Yang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Shi-Fu Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jing He
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- Central Hospital of Wuhan, Wuhan, People’s Republic of China
| | - Wei Xia
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Hefang Liu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Bo Zhen
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Haihong Di
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Changsheng Xie
- Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Xianping Xia
- Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Changhong Zhu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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Hu LX, He J, Hou L, Wang H, Li J, Xie C, Duan Z, Sun LK, Wang X, Zhu C. Biological evaluation of the copper/low-density polyethylene nanocomposite intrauterine device. PLoS One 2013; 8:e74128. [PMID: 24058521 PMCID: PMC3776804 DOI: 10.1371/journal.pone.0074128] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 07/31/2013] [Indexed: 11/19/2022] Open
Abstract
Devices and materials intended for clinical applications as medical and implant devices should be evaluated to determine their biocompatibility in physiological systems. This article presents results from cytotoxicity assay of L929 mouse fibroblasts culture, tests for skin irritation, intracutaneous reactivity and sensitization, and material implantation tests for the novel copper/low-density polyethylene nanocomposite intrauterine device (nano-Cu/LDPE IUD) with potential for future clinical utilization. Cytotoxicity test in vitro was conducted to evaluate the change in morphology, growth and proliferation of cultured L929 mouse fibroblasts, which in vivo examination for skin irritation (n = 6) and intracutaneous reactivity (n = 6) were carried out to explore the irritant behavior in New Zealand White rabbits. Skin sensitization was implemented to evaluate the potential skin sensitizing in Hartley guinea pigs (n = 35). The materials were implanted into the spinal muscle of rabbits (n = 9). The cytotoxicity grade of the nano-Cu/LDPE IUD was 0-1, suggested that the composite was nontoxic or mildly cytotoxic; no irritation reaction and skin sensitization were identified in any animals of specific extracts prepared from the material under test; similarly to the control sides, the inflammatory reaction was observed in the rabbits living tissue of the implanted material in intramuscular implantation assay. They indicated that the novel composite intrauterine device presented potential for this type of application because they meet the requirements of the standard practices recommended for evaluating the biological reactivity. The nano-Cu/LDPE IUD has good biocompatibility, which is biologically safe for the clinical research as a novel contraceptive device.
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Affiliation(s)
- Li-Xia Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jing He
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
- Central Hospital of Wuhan, Wuhan, P.R. China
| | - Li Hou
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Hong Wang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Jun Li
- Wuchang District Maternal and Child Health Hospital, Wuhan, P.R. China
| | - Changsheng Xie
- Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Zhuo Duan
- Dayu Medical Devices Co., Ltd., Jingzhou, P.R. China
| | - Li-Kui Sun
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Xin Wang
- Shandong Quality Inspection Center for Medical Devices; Shandong Provincial Key Laboratory of Biological Evaluation of Medical Devices, Jinan, P.R. China
| | - Changhong Zhu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
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25
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Arigony ALV, de Oliveira IM, Machado M, Bordin DL, Bergter L, Prá D, Pêgas Henriques JA. The influence of micronutrients in cell culture: a reflection on viability and genomic stability. BIOMED RESEARCH INTERNATIONAL 2013; 2013:597282. [PMID: 23781504 PMCID: PMC3678455 DOI: 10.1155/2013/597282] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 04/23/2013] [Accepted: 05/03/2013] [Indexed: 12/31/2022]
Abstract
Micronutrients, including minerals and vitamins, are indispensable to DNA metabolic pathways and thus are as important for life as macronutrients. Without the proper nutrients, genomic instability compromises homeostasis, leading to chronic diseases and certain types of cancer. Cell-culture media try to mimic the in vivo environment, providing in vitro models used to infer cells' responses to different stimuli. This review summarizes and discusses studies of cell-culture supplementation with micronutrients that can increase cell viability and genomic stability, with a particular focus on previous in vitro experiments. In these studies, the cell-culture media include certain vitamins and minerals at concentrations not equal to the physiological levels. In many common culture media, the sole source of micronutrients is fetal bovine serum (FBS), which contributes to only 5-10% of the media composition. Minimal attention has been dedicated to FBS composition, micronutrients in cell cultures as a whole, or the influence of micronutrients on the viability and genetics of cultured cells. Further studies better evaluating micronutrients' roles at a molecular level and influence on the genomic stability of cells are still needed.
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Affiliation(s)
- Ana Lúcia Vargas Arigony
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
| | - Iuri Marques de Oliveira
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
| | - Miriana Machado
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
- Instituto de Educação para Pesquisa, Desenvolvimento e Inovação Tecnológica—ROYAL, Unidade GENOTOX—ROYAL, Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43421, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
| | - Diana Lilian Bordin
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
| | - Lothar Bergter
- Instituto de Educação para Pesquisa, Desenvolvimento e Inovação Tecnológica—ROYAL, Unidade GENOTOX—ROYAL, Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43421, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
| | - Daniel Prá
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
- PPG em Promoção da Saúde, Universidade de Santa Cruz do Sul (UNISC), Avenida Independência 2293, 96815-900 Santa Cruz do Sul, RS, Brazil
| | - João Antonio Pêgas Henriques
- Laboratório de Reparação de DNA em Eucariotos, Departamento de Biofísica/Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43422, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
- Instituto de Educação para Pesquisa, Desenvolvimento e Inovação Tecnológica—ROYAL, Unidade GENOTOX—ROYAL, Centro de Biotecnologia, UFRGS, Avenida Bento Gonçalves 9500, Prédio 43421, Setor IV, Campus do Vale, 91501-970 Porto Alegre, RS, Brazil
- Instituto de Biotecnologia, Departamento de Ciências Biomédicas, Universidade de Caxias do Sul (UCS), Rua Francisco Getúlio Vargas 1130, 95070-560 Caxias do Sul, RS, Brazil
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26
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Alvarez F, Grillo C, Schilardi P, Rubert A, Benítez G, Lorente C, de Mele MFL. Decrease in cytotoxicity of copper-based intrauterine devices (IUD) pretreated with 6-mercaptopurine and pterin as biocompatible corrosion inhibitors. ACS APPLIED MATERIALS & INTERFACES 2013; 5:249-255. [PMID: 23252335 DOI: 10.1021/am3025307] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The copper intrauterine device (IUD) based its contraceptive action on the release of cupric ions from a copper wire. Immediately after the insertion, a burst release of copper ions occurs, which may be associated to a variety of side effects. 6-Mercaptopurine (6-MP) and pterin (PT) have been proposed as corrosion inhibitors to reduce this harmful release. Pretreatments with 1 × 10(-4) M 6-MP and 1 × 10(-4) M PT solutions with 1h and 3h immersion times were tested. Conventional electrochemical techniques, EDX and XPS analysis, and cytotoxicity assays with HeLa cell line were employed to investigate the corrosion behavior and biocompatibility of copper with and without treatments. Results showed that copper samples treated with PT and 6-MP solutions for 3 and 1 h, respectively, are more biocompatible than those without treatment. Besides, the treatment reduces the burst release effect of copper in simulated uterine solutions during the first week after the insertion. It was concluded that PT and 6-MP treatments are promising strategies able to reduce the side effects related to the "burst release" of copper-based IUD without altering the contraceptive action.
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Affiliation(s)
- Florencia Alvarez
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA, CCT La Plata -CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CC 16, Suc. 4 (1900) La Plata, Argentina
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Nelson AL. New frontiers in female contraception (and male condoms): 2012. Expert Opin Investig Drugs 2012; 21:677-93. [DOI: 10.1517/13543784.2012.679342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anita L Nelson
- Harbor UCLA Medical Center,
1457 3rd Street, Manhattan Beach, CA 90266, USA ;
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Cao B, Zheng Y, Xi T, Zhang C, Song W, Burugapalli K, Yang H, Ma Y. Concentration-dependent cytotoxicity of copper ions on mouse fibroblasts in vitro: effects of copper ion release from TCu380A vs TCu220C intra-uterine devices. Biomed Microdevices 2012; 14:709-20. [DOI: 10.1007/s10544-012-9651-x] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Zhang W, Xia X, Qi C, Xie C, Cai S. A porous Cu/LDPE composite for copper-containing intrauterine contraceptive devices. Acta Biomater 2012; 8:897-903. [PMID: 21982847 DOI: 10.1016/j.actbio.2011.09.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 08/07/2011] [Accepted: 09/20/2011] [Indexed: 01/15/2023]
Abstract
To improve the rates of both cupric ion release and the utilization of copper in non-porous copper/low-density polyethylene (Cu/LDPE) composite, a porous Cu/LDPE composite is proposed and developed in the present work. Here 2,5-di-tert-butylhydroquinone was chosen as the porogen, ethyl acetate was chosen as the solvent for extraction, and the porous Cu/LDPE composite was obtained by using injection molding and the particulate leaching method. After any residual ethyl acetate remaining inside the porous Cu/LDPE composite had been removed by vacuum drying, the composite was characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry and absorption measurement. For comparison, a non-porous Cu/LDPE composite was also characterized in the same way. The results show that the porous structure was successfully introduced into the polymeric base of the non-porous Cu/LDPE composite, and the porous Cu/LDPE composite is a simple hybrid of copper particles and porous LDPE. The results also show that the introduction of a porous structure can improve the cupric ion release rate of the non-porous Cu/LDPE composite with a certain content of copper particles, indicating that the utilization rate of copper can be improved either the introduction of a porous structure, and that the porous Cu/LDPE composite is another promising material for copper-containing intrauterine devices.
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Affiliation(s)
- Weiwei Zhang
- State Key Laboratory of Material Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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Alvarez F, Schilardi PL, de Mele MFL. Reduction of the “burst release” of copper ions from copper-based intrauterine devices by organic inhibitors. Contraception 2012; 85:91-8. [DOI: 10.1016/j.contraception.2011.05.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 05/16/2011] [Accepted: 05/19/2011] [Indexed: 12/01/2022]
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31
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Cho HY, Srinivasan A, Hong J, Hsu E, Liu S, Shrivats A, Kwak D, Bohaty AK, Paik HJ, Hollinger JO, Matyjaszewski K. Synthesis of Biocompatible PEG-Based Star Polymers with Cationic and Degradable Core for siRNA Delivery. Biomacromolecules 2011; 12:3478-86. [DOI: 10.1021/bm2006455] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hong Y. Cho
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Abiraman Srinivasan
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Joanna Hong
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Eric Hsu
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Shiguang Liu
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Arun Shrivats
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Dan Kwak
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew K. Bohaty
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Hyun-jong Paik
- Department of Polymer Science and Engineering, Pusan National University, Busan, South Korea
| | - Jeffrey O. Hollinger
- Bone Tissue Engineering Center, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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32
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Arnal N, de Alaniz MJ, Marra CA. Carnosine and neocuproine as neutralizing agents for copper overload-induced damages in cultured human cells. Chem Biol Interact 2011; 192:257-63. [DOI: 10.1016/j.cbi.2011.03.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Revised: 12/28/2010] [Accepted: 03/28/2011] [Indexed: 12/11/2022]
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33
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Nelson AL. Safety, Efficacy, and Patient Acceptability of the Copper T-380A Intrauterine Contraceptive Device. CLINICAL MEDICINE INSIGHTS. WOMEN'S HEALTH 2011. [DOI: 10.4137/cmwh.s5332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The ParaGard Copper T 380A intrauterine device (CuT380A) provides reversible contraception that is as effective as sterilization for up to 20 years. The CuT380A is a mainstream, first-line contraceptive option for most healthy women, including nulligravid women, as well as many women who have serious medical problems. Because it is the most cost-effective method of birth control, the CuT380A is the preferred IUD, except for women who desire lighter or no menstrual blood loss. Surveys reveal that 95% of US CuT380A users are “very” or “somewhat” satisfied with their method. This article describes current candidates for IUD use, discusses the mechanisms of action of the CuT380A, provides guidance to reduce barriers to IUD access, suggests counseling points for patients, and outlines techniques to reduce the risks and side effects that can be associated with use of the CuT380A.
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Affiliation(s)
- Anita L. Nelson
- Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, Torrance, CA, USA
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