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Morgan ML, Teo W, Hernandez Y, Brideau C, Cummins K, Kuipers HF, Stys PK. Cuprizone-induced Demyelination in Mouse Brain is not due to Depletion of Copper. ASN Neuro 2022; 14:17590914221126367. [PMID: 36114624 PMCID: PMC9483969 DOI: 10.1177/17590914221126367] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The cuprizone (CPZ) model allows the study of the biochemical processes underlying
nonautoimmune-mediated demyelination, remyelination, and chronic white matter disease
progression. CPZ is a copper (Cu) chelator that chiefly causes oligodendrocyte apoptosis
in the corpus callosum and cerebellum when administered in the mouse diet. While
disruption of Cu homeostasis is known to cause neurodegeneration (as is observed in
Wilson’s and Menkes disease), no consensus exists to date as to CPZ’s mechanism of action.
We sought to determine whether CPZ-induced pathology is due to Cu depletion as is
generally believed. Cu supplementation in chow, in stoichiometric excess to the added CPZ,
did not reduce CPZ-induced demyelination in C57Bl/6 mice. Moreover, equivalent doses of
other known Cu chelators neocuproine and D-penicillamine (D-Pen) failed to induce central
nervous system (CNS) demyelination. Since administration of D-Pen in the treatment of
Wilson’s disease can induce hypocupremia, we next sought to recreate penicillamine-induced
Cu deficiency to compare with purported CPZ-induced Cu deficiency. The resulting clinical
phenotype and histopathology were unlike that of CPZ. D-Pen-treated mice exhibited digit
paralysis, tail flaccidity, subcutaneous hemorrhaging, and optic and sciatic neuropathy,
all of which were prevented with Cu supplementation. No demyelination of the corpus
callosum or cerebellum was observed, even with D-Pen doses tenfold higher than CPZ.
Intriguingly, addition of D-Pen to the CPZ diet paradoxically prevented demyelination in a
dose-dependent manner.
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Affiliation(s)
- Megan L. Morgan
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Wulin Teo
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Yda Hernandez
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Craig Brideau
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Karen Cummins
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Hedwich F. Kuipers
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
| | - Peter K. Stys
- Cumming School of Medicine, Department of Clinical Neurosciences, University of Calgary, Hotchkiss Brain Institute, Calgary, 3330 Hospital Drive N.W. HRIC 1B37A, Calgary, AB, T2N 4N1, Canada
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Abdollahiyan P, Heidari H, Hassanzadeh S, Hasanzadeh M, Seidi F, Pashazadeh-Panahi P. Providing multicolor plasmonic patterns with graphene quantum dots functionalized d-penicillamine for visual recognition of V(V), Cu (II), and Fe(III): Colorimetric fingerprints of GQDs-DPA for discriminating ions in human urine samples. J Mol Recognit 2021; 34:e2936. [PMID: 34505710 DOI: 10.1002/jmr.2936] [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: 08/11/2021] [Revised: 08/18/2021] [Accepted: 08/22/2021] [Indexed: 12/30/2022]
Abstract
In this study, a novel fluorescent probe (graphene quantum dots functionalized d-penicillamine [GQDs-DPA]) was developed for the selective identification of Cu2+ , V5+ , and Fe3+ among 26 types of metal ions, which considerably quench the fluorescence intensity of GQD. So, GQDs-DPA was applied as a simple fluorescent probe for facile metal ions recognition in standard solution. The proposed DPA-GQD supported amino acids respond to Cu2+ , V5+ , and Fe3+ , with high sensitivity. The intensity of the fluorescence histogram of this probe significantly diminished in exposure to metal ions such as Cu(II), V(V), and Fe(III). Moreover, a microfluidic paper-based device (μPAD) was fabricated through a facile and cost-effective protocol. Cu2+ , V5+ , and Fe3+ can be selectively recognized by GQDs-DPA using μPAD by naked eye. Also, GQDs-DPA exhibits a linear response for the detection of ions in concentrations ranging from 0.01 to 1 ppm, with a low limit of quantification of 0.01 ppm in standards samples. The boosted color uniformity, low instrumental needs of the stamp, and disposability of μPADs enable the application of the proposed device for commercial applications in environmental science and technology.
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Affiliation(s)
- Parinaz Abdollahiyan
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, China.,Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Heidari
- Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran
| | - Soheila Hassanzadeh
- Geology Department, Faculty of Science and Chemistry, Urmia University, Urmia, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, China
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Al-Fahemi JH, Khedr AM, Althagafi I, El-Metwaly NM, Saad FA, Katouah HA. Green synthesis approach for novel benzenesulfonamide nanometer complexes with elaborated spectral, theoretical and biological treatments. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jabir H. Al-Fahemi
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
| | - Abdalla M. Khedr
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
- Chemistry Department, Faculty of Science; Tanta University; Tanta Egypt
| | - Ismail Althagafi
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
| | - Nashwa M. El-Metwaly
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
- Chemistry Department, Faculty of Science; Mansoura University; Mansoura Egypt
| | - Fawaz A. Saad
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
| | - Hanadi A. Katouah
- Department of Chemistry, Faculty of Applied Science; Umm Al-Qura University; Makkah Saudi Arabia
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