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González Díaz A, Cataldi R, Mannini B, Vendruscolo M. Preparation and Characterization of Zn(II)-Stabilized Aβ 42 Oligomers. ACS Chem Neurosci 2024; 15:2586-2599. [PMID: 38979921 PMCID: PMC11258685 DOI: 10.1021/acschemneuro.4c00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 07/10/2024] Open
Abstract
Aβ oligomers are being investigated as cytotoxic agents in Alzheimer's disease (AD). Because of their transient nature and conformational heterogeneity, the relationship between the structure and activity of these oligomers is still poorly understood. Hence, methods for stabilizing Aβ oligomeric species relevant to AD are needed to uncover the structural determinants of their cytotoxicity. Here, we build on the observation that metal ions and metabolites have been shown to interact with Aβ, influencing its aggregation and stabilizing its oligomeric species. We thus developed a method that uses zinc ions, Zn(II), to stabilize oligomers produced by the 42-residue form of Aβ (Aβ42), which is dysregulated in AD. These Aβ42-Zn(II) oligomers are small in size, spanning the 10-30 nm range, stable at physiological temperature, and with a broad toxic profile in human neuroblastoma cells. These oligomers offer a tool to study the mechanisms of toxicity of Aβ oligomers in cellular and animal AD models.
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Affiliation(s)
- Alicia González Díaz
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Rodrigo Cataldi
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Benedetta Mannini
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
- Department
of Experimental and Clinical Biomedical Sciences Mario Serio, University
of Florence, 50134 Florence, Italy
| | - Michele Vendruscolo
- Centre
for Misfolding Diseases, Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
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2
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Zhang Z, Zou Y, Liu J. A single 8-hydroxyquinoline-appended bile acid fluorescent probe obtained by click chemistry for solvent-dependent and distinguishable sensing of zinc(II) and cadmium(II). LUMINESCENCE 2024; 39:e4610. [PMID: 37880919 DOI: 10.1002/bio.4610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/27/2023]
Abstract
Construction of fluorescent probes for zinc ion (Zn2+ ) and cadmium ion (Cd2+ ) is significant for the safety of humans. However, the discriminating recognition of Zn2+ and Cd2+ by a single probe remains challenging owing to their similar properties. Herein, a novel deoxycholic acid derivative containing 8-hydroxyquinoline fluorophore has been facilely synthesized through click chemistry to form a clamp-like probe. Using its perfect bonding cavity from 1,2,3-triazole and quinoline, this molecule showed favorable solvent-dependent fluorescent responses and distinguished Zn2+ and Cd2+ in different solvents. In ethanol aqueous solution, it displayed good selectivity and ratiometric fluorescence to Zn2+ with 30 nm spectroscopic red-shifts. In acetonitrile aqueous solution, it exhibited good selectivity and ratiometric fluorescence to Cd2+ with 18 nm spectroscopic red-shifts. Moreover, the unique microstructural features of the probe in assembly were used to reflect its recognition processes. Due to its merits of low detection limit and instant response time, the probe was utilized for sensing Zn2+ and Cd2+ in water, beer and urine with high accuracy. Meanwhile, this probe served as a handy tool and was employed to obtain inexpensive test strips for the prompt and semiqualitative analysis of Zn2+ and Cd2+ with the naked eye.
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Affiliation(s)
- Zhen Zhang
- Institute of Molecular Science and Application, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, School of Chemistry, Xi'an Jiaotong University, Xi'an, China
| | - Yuan Zou
- Institute of Molecular Science and Application, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, School of Chemistry, Xi'an Jiaotong University, Xi'an, China
| | - Jihua Liu
- Xi'an Modern Chemistry Research Institute, Xi'an, China
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3
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Arruebarrena MA, Hawe CT, Lee YM, Branco RC. Mechanisms of Cadmium Neurotoxicity. Int J Mol Sci 2023; 24:16558. [PMID: 38068881 PMCID: PMC10706630 DOI: 10.3390/ijms242316558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/17/2023] [Accepted: 11/18/2023] [Indexed: 12/18/2023] Open
Abstract
Cadmium is a heavy metal that increasingly contaminates food and drink products. Once ingested, cadmium exerts toxic effects that pose a significant threat to human health. The nervous system is particularly vulnerable to prolonged, low-dose cadmium exposure. This review article provides an overview of cadmium's primary mechanisms of neurotoxicity. Cadmium gains entry into the nervous system via zinc and calcium transporters, altering the homeostasis for these metal ions. Once within the nervous system, cadmium disrupts mitochondrial respiration by decreasing ATP synthesis and increasing the production of reactive oxygen species. Cadmium also impairs normal neurotransmission by increasing neurotransmitter release asynchronicity and disrupting neurotransmitter signaling proteins. Cadmium furthermore impairs the blood-brain barrier and alters the regulation of glycogen metabolism. Together, these mechanisms represent multiple sites of biochemical perturbation that result in cumulative nervous system damage which can increase the risk for neurological and neurodegenerative disorders. Understanding the way by which cadmium exerts its effects is critical for developing effective treatment and prevention strategies against cadmium-induced neurotoxic insult.
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Affiliation(s)
- Madelyn A. Arruebarrena
- Neuroscience and Behavior Program, University of Notre Dame, Notre Dame, IN 46556, USA; (M.A.A.); (Y.M.L.)
| | - Calvin T. Hawe
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA;
| | - Young Min Lee
- Neuroscience and Behavior Program, University of Notre Dame, Notre Dame, IN 46556, USA; (M.A.A.); (Y.M.L.)
| | - Rachel C. Branco
- Neuroscience and Behavior Program, University of Notre Dame, Notre Dame, IN 46556, USA; (M.A.A.); (Y.M.L.)
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA;
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4
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Doroszkiewicz J, Farhan JA, Mroczko J, Winkel I, Perkowski M, Mroczko B. Common and Trace Metals in Alzheimer's and Parkinson's Diseases. Int J Mol Sci 2023; 24:15721. [PMID: 37958705 PMCID: PMC10649239 DOI: 10.3390/ijms242115721] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Trace elements and metals play critical roles in the normal functioning of the central nervous system (CNS), and their dysregulation has been implicated in neurodegenerative disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD). In a healthy CNS, zinc, copper, iron, and manganese play vital roles as enzyme cofactors, supporting neurotransmission, cellular metabolism, and antioxidant defense. Imbalances in these trace elements can lead to oxidative stress, protein aggregation, and mitochondrial dysfunction, thereby contributing to neurodegeneration. In AD, copper and zinc imbalances are associated with amyloid-beta and tau pathology, impacting cognitive function. PD involves the disruption of iron and manganese levels, leading to oxidative damage and neuronal loss. Toxic metals, like lead and cadmium, impair synaptic transmission and exacerbate neuroinflammation, impacting CNS health. The role of aluminum in AD neurofibrillary tangle formation has also been noted. Understanding the roles of these elements in CNS health and disease might offer potential therapeutic targets for neurodegenerative disorders. The Codex Alimentarius standards concerning the mentioned metals in foods may be one of the key legal contributions to safeguarding public health. Further research is needed to fully comprehend these complex mechanisms and develop effective interventions.
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Affiliation(s)
- Julia Doroszkiewicz
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Jakub Ali Farhan
- Department of Public International Law and European Law, Faculty of Law, University of Bialystok, 15-089 Bialystok, Poland
| | - Jan Mroczko
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Izabela Winkel
- Dementia Disorders Centre, Medical University of Wroclaw, 50-425 Scinawa, Poland
| | - Maciej Perkowski
- Department of Public International Law and European Law, Faculty of Law, University of Bialystok, 15-089 Bialystok, Poland
| | - Barbara Mroczko
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
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5
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MELEK İM, KUŞ B, KAPTAN Z, PETEKKAYA E. Correlation of metal ions with specific brain region volumes in neurodegenerative diseases. Turk J Med Sci 2023; 53:1465-1475. [PMID: 38812995 PMCID: PMC10763799 DOI: 10.55730/1300-0144.5714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 10/26/2023] [Accepted: 08/26/2023] [Indexed: 05/31/2024] Open
Abstract
Background/aim There are reports stating that deteriorations in metal homeostasis in neurodegenerative diseases promote abnormal protein accumulation. In this study, the serum metal levels in Alzheimer's disease (AD) and Parkinson's disease (PD) and its relationship with the cortical regions of the brain were investigated. Materials and methods The patients were divided into 3 groups consisting of the AD group, PD group, and healthy control group (n = 15 for each). The volumes of specific brain regions were measured over the participants' 3-dimensional magnetic resonance images, and they were compared across the groups. Copper, zinc, iron, and ferritin levels in the serums were determined, and their correlations with the brain region volumes were examined. Results The volumes of left hippocampus and right substantia nigra were lower in the AD and PD groups, while the volume of the left nucleus caudatus (CdN) and bilateral insula were lower in the AD group compared to the control group. Serum zinc levels were lower in the AD and PD groups, while the iron level was lower in the PD group in comparison to the control group. In addition, the serum ferritin level was higher in the AD group than in the control group. Serum zinc and copper levels in the AD group were positively correlated with the volumes of the right entorhinal cortex, thalamus, CdN, and insula. Serum zinc and copper levels in the PD group showed a negative correlation with the left nucleus accumbens (NAc), right putamen, and right insula volumes. While the serum ferritin level in the PD group displayed a positive correlation with the bilateral CdN, putamen, and NAc, as well as the right hippocampus and insula volumes, no area was detected that showed a correlation with the serum ferritin level in the AD group. Conclusion A relationship was determined between the serum metal levels in the AD and PD groups and certain brain cortical regions that showed volumetric changes, which can be important for the early diagnosis of neurodegenerative diseases.
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Affiliation(s)
- İsmet Murat MELEK
- Department of Neurology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay,
Turkiye
| | - Berna KUŞ
- Department of Biochemistry, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay,
Turkiye
| | - Zülal KAPTAN
- Department of Physiology, Faculty of Medicine, Beykent University, İstanbul,
Turkiye
| | - Emine PETEKKAYA
- Department of Anatomy, Faculty of Medicine, Kastamonu University, Kastamonu,
Turkiye
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A fluorescent probe based on a phenylalanine derivative is capable of sequential detection of Zn 2+ and Cys/His. J Biol Inorg Chem 2023; 28:205-211. [PMID: 36652011 DOI: 10.1007/s00775-022-01984-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/17/2022] [Indexed: 01/19/2023]
Abstract
A facile and dual fluorescent chemosensor (named 7-IDF) based on a phenylalanine derivative with an indole group was designed and synthesized. 7-IDF can selectively and sensitively detect Zn2+ via obvious fluorescence enhancement in an aqueous solution. Remarkably, the 7-IDF-Zn complex with blue luminescence has higher selectivity toward cysteine (Cys) and histidine (His) than for other amino acids. Intriguingly, 7-IDF can also be used as an excellent probe to detect Zn2+ in real water samples. Moreover, 7-IDF and 7-IDF-Zn possess excellent biocompatibility and cell permeability, and 7-IDF can consecutively detect Zn2+ and Cys/His in Hela cells through fluorescence imaging experiments. This study suggests that the phenylalanine-based chemosensor possesses great potential applications for the sequential detection of Zn2+ and Cys/His in biosystems.
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7
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Esculetin and Fucoidan Attenuate Autophagy and Apoptosis Induced by Zinc Oxide Nanoparticles through Modulating Reactive Astrocyte and Proinflammatory Cytokines in the Rat Brain. TOXICS 2022; 10:toxics10040194. [PMID: 35448455 PMCID: PMC9025201 DOI: 10.3390/toxics10040194] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 12/10/2022]
Abstract
We examined the protective effects of esculetin and fucoidan against the neurotoxicity of ZnO NPs in rats. Ninety rats were divided into nine groups and pre-treated with esculetin or fucoidan 1 h before ZnO NP administration on a daily basis for 2 weeks. Serum and brain homogenates were examined by enzyme-linked immunosorbent assay (ELISA), and neurons, microglia, and astrocytes in the hippocampal region were examined with immunohistochemical analysis. The serum levels of interleukin-1-beta (IL-1β), 3-nitrotyrosine (3-NT), superoxide dismutase (SOD), and 8-hydroxy-2′-deoxyguanosine (8-OHdG) were altered in the ZnO NP treatment groups. Brain IL-1β and TNF-α levels were elevated after ZnO NP administration, and these effects were inhibited by esculetin and fucoidan. SOD, 8-OHdG, and acetylcholinesterase (AChE) levels in the brain were decreased after ZnO NP administration. The brain levels of beclin-1 and caspase-3 were elevated after ZnO NP treatment, and these effects were significantly ameliorated by esculetin and fucoidan. The number of reactive astrocytes measured by counting glial fibrillary acidic protein (GFAP)-positive cells, but not microglia, increased following ZnO NP treatment, and esculetin and fucoidan ameliorated the changes. Esculetin and fucoidan may be beneficial for preventing ZnO NP-mediated autophagy and apoptosis by the modulation of reactive astrocyte and proinflammatory cytokines in the rat brain.
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8
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Chen GY, Wan W, Cao QY, Xie Y. Aminoquinoline-anchored polynorbornene for sequential fluorescent sensing of Zn 2+ and ATP. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 269:120771. [PMID: 34952445 DOI: 10.1016/j.saa.2021.120771] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/02/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
A novel aminoquinoline functionalized norbornene (1) and its ring-opening metathesis polymerization (ROMP) copolymer P1 have been designed and synthesized. The polymer probe P1 can self-assemble nano aggregation in aqueous solution. The fluorescent experiments revealed that both 1 and P1 show a ratiometric fluorescence response toward Zn2+ over other mental ions in Tris-HCl buffer solution, with the polymer probe P1 shows a better photostability and higher binding affinity than that of the small molecular probe 1. Furthermore, the in situ formed P1-Zn2+ ensemble was successfully used as the secondary sensor for ATP. P1 is also successfully used for monitoring intracellular Zn2+ and ATP in living cells.
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Affiliation(s)
- Gui-Yan Chen
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Wen Wan
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Qian-Yong Cao
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China.
| | - Yu Xie
- College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
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9
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Zhang X, Zhang J, Wang Y, Wang M, Tang M, Lin Y, Liu Q. Epigenetic Modifications and Neurodegenerative Disorders: A Biochemical Perspective. ACS Chem Neurosci 2022; 13:177-184. [PMID: 35000390 DOI: 10.1021/acschemneuro.1c00701] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Methylations in living cells are methyl groups attached to amino acids, DNA, RNA, and so on. However, their biochemical roles have not been fully defined. A theory has been postulated that methylation leads to hyperconjugation, and the electron-donating feature weakens a nearby chemical bond, which increases the bond length of C4-N4 of 5-methylcytosine, therefore weakening the C4-N4 bond and resulting in stronger protonation or hydrogen bonding of the N4 nitrogen atom. Protonation can give rise to the generation of mutagenic and carcinogenic strong acids such as HCl, which are also capable of solubilizing stressful, insoluble, and stiff salts. Insoluble and rigid salts such as calcium oxalate and/or calcium phosphate were recently proposed as a primary cause of some neurodegenerative disorders. Protonation of nitrogen atoms in 5-methylcytosine enhances the interaction with negatively charged phosphate groups and contributes to the formation of compact heterochromatin. The electronegativity of the oxygen atoms in the modifications of 5-hydroxymethylcytosine or 5-formylcytosine can shorten the lengths of adjacent bonds with no increase of cation affinity in N4. The carboxyl group in 5-carboxylcytosine is a weak acid capable of antagonizing mutagenic HCl and modestly helping solubilize insoluble salts. Electron delocalization of the methyl group in N4-methylcytosine results in a lower affinity of N4 to cations. The positive charge at N3 in the resonance structure of 3-methylcytosine is lessened by the electron-donating attribute of the methyl group attached to the N3 atom, consequently reducing acid formation. The electron delocalization of three methyl groups decreases the positive charge in the amino nitrogen in the side group of lysine 4 in histone H3, weakening interactions with phosphate groups and consequently activating gene expression. The carbonyl oxygen in 8-oxo-7,8-dihydroguanine draws protons and accumulates HCl, accounting for its moderate mutation propensity and potential capacity to solubilize stiff salts. The biochemical insight will further our understanding on the crosstalk of genetics and epigenetics in the etiology of neurodegenerative diseases.
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Affiliation(s)
- Xiaoxiao Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Biomedical Engineering Research Center, Kunming Medical University, Kunming 650500, China
| | - Jiaming Zhang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yuchuan Wang
- Hebei Key Laboratory for Chronic Diseases, School of Basic Medical Sciences, North China University of Science and Technology, Tangshan, Hebei 063210, China
| | - Minji Wang
- School of Chemistry and Molecular Engineering, East China Normal University, Minhang Campus, 3663 Zhongshan Rd North, Shanghai 200062, China
| | - Man Tang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yuhan Lin
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiuyun Liu
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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Ghorui T, Hens A, Pramanik K. Synthesis, photophysical properties and theoretical studies of pyrrole-based azoaromatic Zn(II) complexes in mixed aqueous medium. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Abstract
Metal homeostasis in the central nervous system (CNS) is a crucial component of healthy brain function, because metals serve as enzymatic cofactors and are key components of intra- and inter-neuronal signaling. Metal dysregulation wreaks havoc on neural networks via induction and proliferation of pathological pathways that cause oxidative stress, synaptic impairment, and ultimately, cognitive deficits. Thus, exploration of metal biology in relation to neurodegenerative pathology is essential in pursuing novel therapies for Alzheimer's Disease and other neurodegenerative disorders. This review covers mechanisms of action of aluminum, iron, copper, and zinc ions with respect to the progressive, toxic accumulation of extracellular β-amyloid plaques and intracellular hyperphosphorylated neurofibrillary tau tangles that characterizes Alzheimer's Disease, with the goal of evaluating the therapeutic potential of metal ion interference in neurodegenerative disease prevention and treatment. As neuroscientific interest in the role of metals in neurodegeneration escalates-in large part due to emerging evidence substantiating the interplay between metal imbalances and neuropathology-it becomes clear that the use of metal chelating agents may be a viable method for ameliorating Alzheimer's Disease pathology, as its etiology remains obscure. We conclude that, although metal therapies can potentially deter neurodegenerative processes, the most promising treatments will remain elusive until further understanding of neurodegenerative etiology is achieved. New research directions may best be guided by animal models of neurodegeneration, which reveal specific insights into biological mechanisms underlying dementia.
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Affiliation(s)
- Nikita Das
- Division of Neurotoxicology HFT-132, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, 72079, USA
| | - James Raymick
- Division of Neurotoxicology HFT-132, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Sumit Sarkar
- Division of Neurotoxicology HFT-132, National Center for Toxicological Research/Food and Drug Administration, Jefferson, AR, 72079, USA.
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12
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Whole-blood metabolomics of dementia patients reveal classes of disease-linked metabolites. Proc Natl Acad Sci U S A 2021; 118:2022857118. [PMID: 34493657 PMCID: PMC8449400 DOI: 10.1073/pnas.2022857118] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/08/2021] [Indexed: 01/03/2023] Open
Abstract
Dementia is a slowly progressing, chronic, and usually irreversible decline in cognitive function. Mechanistic causes and definitive treatments remain elusive. Using comprehensive metabolomics, we identified five groups of 33 metabolites (A to E), 13 of them previously reported, possibly useful for diagnosis and therapy of forms of dementia, such as Alzheimer’s disease. Seven A compounds may act as neurotoxins, whereas B to E compounds may protect the nervous system against oxidative stress, maintain energy reserves, supply nutrients and neuroprotective factors. Five metabolites, ergothioneine, S-methyl-ergothioneine, trimethyl-histidine, methionine, and tryptophan, overlap with those reported for frailty. Interventions for cognitive diseases involving these dementia metabolomic markers may be accomplished either by inhibiting A compounds or by supplementing B to E compounds in patients. Dementia is caused by factors that damage neurons. We quantified small molecular markers in whole blood of dementia patients, using nontargeted liquid chromatography–mass spectroscopy (LC-MS). Thirty-three metabolites, classified into five groups (A to E), differed significantly in dementia patients, compared with healthy elderly subjects. Seven A metabolites present in plasma, including quinolinic acid, kynurenine, and indoxyl-sulfate, increased. Possibly they act as neurotoxins in the central nervous system (CNS). The remaining 26 compounds (B to E) decreased, possibly causing a loss of support or protection of the brain in dementia. Six B metabolites, normally enriched in red blood cells (RBCs), all contain trimethylated ammonium moieties. These metabolites include ergothioneine and structurally related compounds that have scarcely been investigated as dementia markers, validating the examination of RBC metabolites. Ergothioneine, a potent antioxidant, is significantly decreased in various cognition-related disorders, such as mild cognitive impairment and frailty. C compounds also include some oxidoreductants and are normally abundant in RBCs (NADP+, glutathione, adenosine triphosphate, pantothenate, S-adenosyl-methionine, and gluconate). Their decreased levels in dementia patients may also contribute to depressed brain function. Twelve D metabolites contains plasma compounds, such as amino acids, glycerophosphocholine, dodecanoyl-carnitine, and 2-hydroxybutyrate, which normally protect the brain, but their diminution in dementia may reduce that protection. Seven D compounds have been identified previously as dementia markers. B to E compounds may be critical to maintain the CNS by acting directly or indirectly. How RBC metabolites act in the CNS and why they diminish significantly in dementia remain to be determined.
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13
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Wang HX, Wei CW, Wang XJ, Xiang HF, Yang XZ, Wu GL, Lin YW. A facile gelator based on phenylalanine derivative is capable of forming fluorescent Zn-metallohydrogel, detecting Zn 2+ in aqueous solutions and imaging Zn 2+ in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119378. [PMID: 33401180 DOI: 10.1016/j.saa.2020.119378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/14/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Supramolecular hydrogels are attracting soft materials with potential applications. In this study, we synthesized a facile gelator (named 2-QF) based on phenylalanine derivative with a Quinoline group. 2-QF can assemble to form hydrogels at room temperature in different colors under low pH values. Moreover, 2-QF was triggered to form a yellow metallohydrogel (2-QF-Zn) at high pH by the coordination between 2-QF and Zn2+. 2-QF-Zn metallohydrogel showed excellent multi-stimuli responsiveness, especially the reversible "on-off" luminescence switching, as induced by base/acid. In addition, at a low concentration, 2-QF can selectively and visibly identify Zn2+ through fluorescence enhancement, and can detect Zn2+ at physiological pH as a chemosensor. Remarkably, 2-QF and 2-QF-Zn exhibited an excellent biocompatibility without cell cytotoxicity, and 2-QF is able to penetrate live HeLa cells and image intracellular Zn2+ by a turn-on fluorescent response, which makes it a potential candidate for biomedical applications.
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Affiliation(s)
- Hai-Xia Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Chuan-Wan Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Xiao-Juan Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Heng-Fang Xiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Xin-Zhi Yang
- Lab of Protein Structure and Function, University of South China Medical School, Hengyang 421001, China
| | - Gui-Long Wu
- Lab of Protein Structure and Function, University of South China Medical School, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; Lab of Protein Structure and Function, University of South China Medical School, Hengyang 421001, China.
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14
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Ahluwalia D, Kumar A, Warkar SG. Recent developments in meta-benziporphodimethene: A new porphyrin analogue. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Cuajungco MP, Ramirez MS, Tolmasky ME. Zinc: Multidimensional Effects on Living Organisms. Biomedicines 2021; 9:biomedicines9020208. [PMID: 33671781 PMCID: PMC7926802 DOI: 10.3390/biomedicines9020208] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 12/28/2022] Open
Abstract
Zinc is a redox-inert trace element that is second only to iron in abundance in biological systems. In cells, zinc is typically buffered and bound to metalloproteins, but it may also exist in a labile or chelatable (free ion) form. Zinc plays a critical role in prokaryotes and eukaryotes, ranging from structural to catalytic to replication to demise. This review discusses the influential properties of zinc on various mechanisms of bacterial proliferation and synergistic action as an antimicrobial element. We also touch upon the significance of zinc among eukaryotic cells and how it may modulate their survival and death through its inhibitory or modulatory effect on certain receptors, enzymes, and signaling proteins. A brief discussion on zinc chelators is also presented, and chelating agents may be used with or against zinc to affect therapeutics against human diseases. Overall, the multidimensional effects of zinc in cells attest to the growing number of scientific research that reveal the consequential prominence of this remarkable transition metal in human health and disease.
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Kaur N, Kaur B. Anthracene possessing amide functionality as a turn-on fluorescent probe for Cu 2+ and Zn 2+ ions. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1878160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Navneet Kaur
- Department of Chemistry, Panjab University, Chandigarh, Punjab, India
| | - Baljeet Kaur
- Department of Chemistry, Panjab University, Chandigarh, Punjab, India
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17
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Zhang X, Ma X, Gan T, Shi Y, Wang Y, Liu Q. Secondary Chemical Bonding between Insoluble Calcium Oxalate and Carbonyl Oxygen Atoms of GLY and VAL Residues Triggers the Formation of Aβ Aggregates and Their Deposition in the Brain. ACS Chem Neurosci 2020; 11:4007-4011. [PMID: 33271013 DOI: 10.1021/acschemneuro.0c00662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Despite intense efforts, the cause of Alzheimer's disease is still not fully understood. A chemical and biochemical perspective could shed light on this disorder. Secondary chemical bonding between calcium and carbonyl oxygen atoms of glycine and valine might give rise to aggregates in the brain, which may later result in cell senescence. The decrease of solubility caused by amino acid substitutions in specific risk factors compounds insolubility issue and likely triggers early-onset Alzheimer's disease. Occasionally the enhancement of hydrogen bonding by amino acid replacements can reinforce the aggregates. Therefore, secondary chemical bonding to cations can generate cellular stresses in patients with Alzheimer's disease in addition to other chemical and biochemical interactions such as salt bridge. The distinction between early-onset and late-onset Alzheimer's disease risk factors may lie in the total capacity of a protein or local potency of a protein fragment to bind calcium or/and oxalate as calcium oxalate is highly insoluble and stressful.
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Affiliation(s)
- Xiaoxiao Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
- Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Biomedical Engineering Research Center, Kunming Medical University, Kunming 650500, China
| | - Xiaoqian Ma
- The Third Xiang Ya Hospital of Central South University, Changsha 410006, China
| | - Tao Gan
- School of Basic Medicine, Gannan Medical University, Ganzhou 34100, Jiangxi, China
| | - Yunfan Shi
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yuan Wang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiuyun Liu
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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Zinc Therapy in Early Alzheimer's Disease: Safety and Potential Therapeutic Efficacy. Biomolecules 2020; 10:biom10081164. [PMID: 32784855 PMCID: PMC7466035 DOI: 10.3390/biom10081164] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 07/30/2020] [Accepted: 08/05/2020] [Indexed: 12/17/2022] Open
Abstract
Zinc therapy is normally utilized for treatment of Wilson disease (WD), an inherited condition that is characterized by increased levels of non-ceruloplasmin bound ('free') copper in serum and urine. A subset of patients with Alzheimer's disease (AD) or its prodromal form, known as Mild Cognitive Impairment (MCI), fail to maintain a normal copper metabolic balance and exhibit higher than normal values of non-ceruloplasmin copper. Zinc's action mechanism involves the induction of intestinal cell metallothionein, which blocks copper absorption from the intestinal tract, thus restoring physiological levels of non-ceruloplasmin copper in the body. On this basis, it is employed in WD. Zinc therapy has shown potential beneficial effects in preliminary AD clinical trials, even though the studies have missed their primary endpoints, since they have study design and other important weaknesses. Nevertheless, in the studied AD patients, zinc effectively decreased non-ceruloplasmin copper levels and showed potential for improved cognitive performances with no major side effects. This review discusses zinc therapy safety and the potential therapeutic effects that might be expected on a subset of individuals showing both cognitive complaints and signs of copper imbalance.
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Hens A. Two hundred times enhancement of emission intensity of a heptadentate acyclic sensor coordinated with Zn 2+ ion: synthesis, crystal structure and emission properties. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1795842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Amar Hens
- Department of Chemistry, Govt. General Degree College Ranibandh, Bankura, India
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Genç Bilgiçli H, Bilgiçli AT, Günsel A, Tüzün B, Ergön D, Yarasir MN, Zengin M. Turn‐on fluorescent probe for Zn
2+
ions based on thiazolidine derivative. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5624] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | | | - Armağan Günsel
- Department of ChemistrySakarya University 54050 Sakarya Turkey
| | - Burak Tüzün
- Department of ChemistryCumhuriyet University Sivas Turkey
| | - Derya Ergön
- Department of ChemistrySakarya University 54050 Sakarya Turkey
| | | | - Mustafa Zengin
- Department of ChemistrySakarya University 54050 Sakarya Turkey
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Singh V, Xu L, Boyko S, Surewicz K, Surewicz WK. Zinc promotes liquid-liquid phase separation of tau protein. J Biol Chem 2020; 295:5850-5856. [PMID: 32229582 DOI: 10.1074/jbc.ac120.013166] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/21/2020] [Indexed: 12/14/2022] Open
Abstract
Tau is a microtubule-associated protein that plays a major role in Alzheimer's disease (AD) and other tauopathies. Recent reports indicate that, in the presence of crowding agents, tau can undergo liquid-liquid phase separation (LLPS), forming highly dynamic liquid droplets. Here, using recombinantly expressed proteins, turbidimetry, fluorescence microscopy imaging, and fluorescence recovery after photobleaching (FRAP) assays, we show that the divalent transition metal zinc strongly promotes this process, shifting the equilibrium phase boundary to lower protein or crowding agent concentrations. We observed no tau LLPS-promoting effect for any other divalent transition metal ions tested, including Mn2+, Fe2+, Co2+, Ni2+, and Cu2+ We also demonstrate that multiple zinc-binding sites on tau are involved in the LLPS-promoting effect and provide insights into the mechanism of this process. Zinc concentration is highly elevated in AD brains, and this metal ion is believed to be an important player in the pathogenesis of this disease. Thus, the present findings bring a new dimension to understanding the relationship between zinc homeostasis and the pathogenic process in AD and related neurodegenerative disorders.
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Affiliation(s)
- Virender Singh
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106
| | - Ling Xu
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106
| | - Solomiia Boyko
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106
| | - Krystyna Surewicz
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106
| | - Witold K Surewicz
- Department of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106.
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22
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Saravana Kumar S, Selva Kumar R, Ashok Kumar S. An “Off-On-Off” type fluorescent chemosensor for the relay detection of Zn2+ and H2PO4− in aqueous environment. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119348] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Transmembrane 163 (TMEM163) protein effluxes zinc. Arch Biochem Biophys 2019; 677:108166. [PMID: 31697912 PMCID: PMC6864316 DOI: 10.1016/j.abb.2019.108166] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/09/2019] [Accepted: 10/31/2019] [Indexed: 01/19/2023]
Abstract
Recent investigations of rodent Tmem163 suggest that it binds to and transports zinc as a dimer, and that alanine mutagenesis of its two species-conserved aspartate (D123A/D127A) residues proposed to bind zinc, perturbs protein function. Direct corroboration, however, is lacking whether it is an influx or efflux transporter in cells. We hypothesized that human TMEM163 is a zinc effluxer based on its predicted protein characteristics. We used cultured human cell lines that either stably or transiently expressed TMEM163, and pre-loaded the cells with zinc to determine transport activity. We found that TMEM163-expressing cells exhibited significant reduction of intracellular zinc levels as evidenced by two zinc-specific fluorescent dyes and radionuclide zinc-65. The specificity of the fluorescence signal was confirmed upon treatment with TPEN, a high-affinity zinc chelator. Multiple sequence alignment and phylogenetic analyses showed that TMEM163 is related to distinct members of the cation diffusion facilitator (CDF) protein family. To further characterize the efflux function of TMEM163, we substituted alanine in two homologous aspartate residues (D124A/D128A) and performed site-directed mutagenesis of several conserved amino acid residues identified as non-synonymous single nucleotide polymorphism (S61R, S95C, S193P, and E286K). We found a significant reduction of zinc efflux upon cellular expression of D124A/D128A or E286K protein variant when compared with wild-type, suggesting that these particular amino acids are important for normal protein function. Taken together, our findings demonstrate that TMEM163 effluxes zinc, and it should now be designated ZNT11 as a new member of the mammalian CDF family of zinc efflux transporters.
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Zn 2+ Interaction with Amyloid-Β: Affinity and Speciation. Molecules 2019; 24:molecules24152796. [PMID: 31370315 PMCID: PMC6695645 DOI: 10.3390/molecules24152796] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 07/26/2019] [Accepted: 07/29/2019] [Indexed: 12/26/2022] Open
Abstract
Conflicting values, obtained by different techniques and often under different experimental conditions have been reported on the affinity of Zn2+ for amyloid-β, that is recognized as the major interaction responsible for Alzheimer’s disease. Here, we compare the approaches employed so far, i.e., the evaluation of Kd and the determination of the stability constants to quantitatively express the affinity of Zn2+ for the amyloid-β peptide, evidencing the pros and cons of the two approaches. We also comment on the different techniques and conditions employed that may lead to divergent data. Through the analysis of the species distribution obtained for two selected examples, we show the implications that the speciation, based on stoichiometric constants rather than on Kd, may have on data interpretation. The paper also demonstrates that the problem is further complicated by the occurrence of multiple equilibria over a relatively narrow pH range.
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Pandey A, Asthana SK, Prakash A, Roy JK, Tiwari I, Upadhyay KK. A selective hydrolytic and restructuring approach through a Schiff base design on a coumarin platform for “turn-on” fluorogenic sensing of Zn2+. Dalton Trans 2019; 48:2068-2076. [DOI: 10.1039/c8dt03211d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The designed molecular probe, CMD, undergoes Zn2+ triggered restructuring and shows a fluorescence change in only 30 seconds. The LOD was found to be of sub-nanomolar level.
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Affiliation(s)
- Abha Pandey
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Sharad Kumar Asthana
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Anand Prakash
- Department of Zoology
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Jagat Kumar Roy
- Department of Zoology
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - Ida Tiwari
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
| | - K. K. Upadhyay
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi-221005
- India
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26
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Rawat M, Rawat DS. Copper oxide nanoparticle catalysed synthesis of imidazo[1,2-a]pyrimidine derivatives, their optical properties and selective fluorescent sensor towards zinc ion. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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27
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Vongnam K, Aree T, Sukwattanasinitt M, Rashatasakhon P. Aminoquinoline‐Salicylaldimine Dyads as Highly Selective Turn‐On Fluorescent Sensors for Zinc (II) Ions. ChemistrySelect 2018. [DOI: 10.1002/slct.201800155] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kunnigar Vongnam
- Department of ChemistryFaculty of ScienceChulalongkorn University Phayathai Rd. Pathumwan Bangkok 10300 Thailand
| | - Thammarat Aree
- Department of ChemistryFaculty of ScienceChulalongkorn University Phayathai Rd. Pathumwan Bangkok 10300 Thailand
| | - Mongkol Sukwattanasinitt
- Department of ChemistryFaculty of ScienceChulalongkorn University Phayathai Rd. Pathumwan Bangkok 10300 Thailand
- Nanotec-CU Center of Excellence on Food and AgricultureDepartment of ChemistryFaculty of ScienceChulalongkorn University Bangkok 10330 Thailand
| | - Paitoon Rashatasakhon
- Department of ChemistryFaculty of ScienceChulalongkorn University Phayathai Rd. Pathumwan Bangkok 10300 Thailand
- Nanotec-CU Center of Excellence on Food and AgricultureDepartment of ChemistryFaculty of ScienceChulalongkorn University Bangkok 10330 Thailand
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A facile strategy for achieving high selective Zn(II) fluorescence probe by regulating the solvent polarity. Talanta 2018; 184:7-14. [PMID: 29674085 DOI: 10.1016/j.talanta.2018.02.094] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 02/13/2018] [Accepted: 02/24/2018] [Indexed: 01/23/2023]
Abstract
A simple Schiff base comprised of tris(2-aminoethyl)amine and salicylaldehyde was designed and synthesized by one-step reaction. Although this compound has poor selectivity for metal ions in acetonitrile, it shows high selectivity and sensitivity detection for Zn(II) ions through adjusting the solvent polarity (the volume ratio of CH3CN/H2O). In other words, this work provides a facile way to realize a transformation from poor to excellent feature for fluorescent probes. The bonding mode of this probe with Zn(II) ions was verified by 1H NMR and MS assays. The stoichiometric ratio of the probe with Zn(II) is 1:1 (mole), which matches with the Job-plot assay. The detection limitation of the probe for Zn(II) is up to 1 × 10-8 mol/L. The electrochemical property of the probe combined with Zn(II) was investigated by cyclic voltammetry method, and the result agreed with the theoretical calculation by the Gaussian 09 software. The probe for Zn(II) could be applied in practical samples and biological systems. The main contribution of this work lies in providing a very simple method to realize the selectivity transformation for poor selective probes. The providing way is a simple, easy and low-cost method for obtaining high selectively fluorescence probes.
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Upadhyay Y, Anand T, Babu LT, Paira P, Crisponi G, SK AK, Kumar R, Sahoo SK. Three-in-one type fluorescent sensor based on a pyrene pyridoxal cascade for the selective detection of Zn(ii), hydrogen phosphate and cysteine. Dalton Trans 2018; 47:742-749. [DOI: 10.1039/c7dt04234e] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel fluorescent receptor L was developed for the selective detection of important bioactive analytes.
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Affiliation(s)
- Yachana Upadhyay
- Department of Applied Chemistry
- SV National Institute of Technology (SVNIT)
- Surat-395007
- India
| | - Thangaraj Anand
- Department of Applied Chemistry
- SV National Institute of Technology (SVNIT)
- Surat-395007
- India
| | - Lavanya Thilak Babu
- Pharmaceutical Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore-632014
- India
| | - Priyankar Paira
- Pharmaceutical Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore-632014
- India
| | - Guido Crisponi
- Dipartimento di Scienze Chimiche e Geologiche
- Università di Cagliari
- 09042 Monserrato
- Italy
| | - Ashok Kumar SK
- Materials Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore-632014
- India
| | - Rajender Kumar
- Department of Applied Chemistry
- SV National Institute of Technology (SVNIT)
- Surat-395007
- India
| | - Suban K. Sahoo
- Department of Applied Chemistry
- SV National Institute of Technology (SVNIT)
- Surat-395007
- India
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31
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Lee SY, Bok KH, Jo TG, Kim SY, Kim C. A simple Schiff-base fluorescence probe for the simultaneous detection of Ga3+ and Zn2+. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.02.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Lin L, Wang D, Chen SH, Wang DJ, Yin GD. A highly sensitive fluorescent chemosensor for selective detection of zinc (II) ion based on the oxadiazole derivative. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:272-278. [PMID: 27960140 DOI: 10.1016/j.saa.2016.11.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/25/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
A novel fluorescent chemosensor based on the oxadiazole, 2-(2-hydroxyphenyl)-5-(4-methoxyphenyl)-1,3,4-oxadiazole, was designed and synthesized. The interaction of the oxadiazole with different metal ions had been investigated through UV-vis absorption and fluorescence spectra in 9:1 (v/v) ethanol-water (pH=7.0) solution. The oxadiazole showed a pronounced fluorescence enhancement at 430nm upon addition of Zn2+ in aqueous solution, whereas it had no apparent interference from other metal ions. The results indicated that the oxadiazole possessed high selectivity and sensitivity to Zn2+ ion. The stoichiometric ratio between the oxadiazole and Zn2+ ion was calculated to be 2:1 by Job plot experiment, meanwhile their binding modes was confirmed by 1H NMR and mass spectrometry. Their association constant was determined to be 1.95×105M-1 and the detection limit for Zn2+ ion was 6.14×10-7mol/L.
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Affiliation(s)
- Lu Lin
- College of Chemistry and Chemical Engineering, Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Dan Wang
- College of Chemistry and Chemical Engineering, Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Si-Hong Chen
- College of Chemistry and Chemical Engineering, Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
| | - Dun-Jia Wang
- College of Chemistry and Chemical Engineering, Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China.
| | - Guo-Dong Yin
- College of Chemistry and Chemical Engineering, Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, China
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Mandal S, Sikdar Y, Maiti DK, Sanyal R, Das D, Mukherjee A, Mandal SK, Biswas JK, Bauzá A, Frontera A, Goswami S. New pyridoxal based chemosensor for selective detection of Zn2+: Application in live cell imaging and phosphatase activity response. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.10.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Miladinović B, Stojanović D, Kostić M, Milutinović M, Jokanović M, Kitić D. ZINC CONTENT IN BERRIES - THE IMPORTANCE FOR HUMAN HEALTH. ACTA MEDICA MEDIANAE 2016. [DOI: 10.5633/amm.2016.0410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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37
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Kim MS, Jo TG, Ahn HM, Kim C. A Colorimetric and Fluorescent Chemosensor for the Selective Detection of Cu 2+ and Zn 2+ Ions. J Fluoresc 2016; 27:357-367. [PMID: 27796628 DOI: 10.1007/s10895-016-1964-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/19/2016] [Indexed: 11/30/2022]
Abstract
A new bi-functional chemosensor 1 based on 3,5-dichlorosalicylaldehyde and 2-(methylthio)aniline has been synthesized. It can detect Cu2+ with a color change from pale yellow to dark yellow in aqueous solution. The selective mechanism of 1 for Cu2+ was proposed to be the enhancement of the intramolecular charge transfer (ICT) band, which was explained by theoretical calculations. The sensor 1 could be used to detect and quantify Cu2+ in water samples. In addition, the sensor 1 displayed "turn-on" fluorescence response only to Zn2+, based on an effect of chelation-enhanced fluorescence (CHEF). Therefore, 1 can serve as a 'single sensor for two different targets' with dual modes.
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Affiliation(s)
- Min Seon Kim
- Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea
| | - Tae Geun Jo
- Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea
| | - Hye Mi Ahn
- Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea
| | - Cheal Kim
- Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea.
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Cuajungco MP, Lees GJ, Kydd RR, Tanzi RE, Bush AI. Zinc and Alzheimer's Disease: An Update. Nutr Neurosci 2016; 2:191-208. [DOI: 10.1080/1028415x.1999.11747277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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39
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Yang J, Fang H, Fang X, Xu X, Yang Y, Rui J, Wu C, Wang S, Xu H. A novel tetrahydroquinazolin-2-amine-based high selective fluorescent sensor for Zn2+ from nopinone. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
It has been nearly 15 years since the suggestion that synaptically released Zn2+ might contribute to excitotoxic brain injury after seizures, stroke, and brain trauma. In the original “zinc-translocation” model, it was proposed that synaptically released Zn2+ ions penetrated postsynaptic neurons, causing injury. According to the model, chelating zinc in the cleft was predicted to be neuroprotective. This proved to be true: zinc chelators have proved to be remarkably potent at reducing excitotoxic neuronal injury in many paradigms. Promising new zinc-based therapies for stroke, head trauma, and epileptic brain injury are under development. However, new evidence suggests that the original translocation model was incomplete. As many as three sources of toxic zinc ions may contribute to excitotoxicity: presynaptic vesicles, postsynaptic zincsequestering proteins, and (more speculatively) mitochondrial pools. The authors present a new model of zinc currents and zinc toxicity that offers expanded opportunities for zinc-selective therapeutic chelation interventions.
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Li Y, Li K, He J. A “turn-on” fluorescent chemosensor for the detection of Zn(II) in aqueous solution at neutral pH and its application in live cells imaging. Talanta 2016; 153:381-5. [DOI: 10.1016/j.talanta.2016.03.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/04/2016] [Accepted: 03/12/2016] [Indexed: 01/22/2023]
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Nyiranshuti L, Kennedy DP, DiPasquale AG, Rheingold AL, Planalp RP. TAMEisoquin, a novel tripodal fluorescent zinc sensor with high Zn(II) affinity and Zn(II)/Cd(II) selective fluorescence response: Synthesis, coordination geometry, spectroscopy, and comparative response to biometal ions. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hane FT, Hayes R, Lee BY, Leonenko Z. Effect of Copper and Zinc on the Single Molecule Self-Affinity of Alzheimer's Amyloid-β Peptides. PLoS One 2016; 11:e0147488. [PMID: 26808970 PMCID: PMC4726707 DOI: 10.1371/journal.pone.0147488] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/05/2016] [Indexed: 11/30/2022] Open
Abstract
The presence of trace concentrations of metallic ions, such as copper and zinc, has previously been shown to drastically increase the aggregation rate and neurotoxicity of amyloid-β (Aβ), the peptide implicated in Alzheimer’s disease (AD). The mechanism of why copper and zinc accelerate Aβ aggregation is poorly understood. In this work, we use single molecule force spectroscopy (SMFS) to probe the kinetic and thermodynamic parameters (dissociation constant, Kd, kinetic dissociation rate, koff, and free energy, ΔG) of the dissociation of an Aβ dimer, the amyloid species which initiates the amyloid cascade. Our results show that nanomolar concentrations of copper do not change the single molecule affinity of Aβ to another Aβ peptide in a statistically significant way, while nanomolar concentrations of zinc decrease the affinity of Aβ-Aβ by an order of magnitude. This suggests that the binding of zinc ion to Aβ may interfere with the binding of Aβ-Aβ, leading to a lower self-affinity.
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Affiliation(s)
- Francis T. Hane
- Department of Biology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Reid Hayes
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Brenda Y. Lee
- Department of Biology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Zoya Leonenko
- Department of Biology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
- * E-mail:
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Lee K, Goodman L, Fourie C, Schenk S, Leitch B, Montgomery JM. AMPA Receptors as Therapeutic Targets for Neurological Disorders. ION CHANNELS AS THERAPEUTIC TARGETS, PART A 2016; 103:203-61. [DOI: 10.1016/bs.apcsb.2015.10.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Singh SK, Srivastav S, Yadav AK, Srikrishna S, Perry G. Overview of Alzheimer's Disease and Some Therapeutic Approaches Targeting Aβ by Using Several Synthetic and Herbal Compounds. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:7361613. [PMID: 27034741 PMCID: PMC4807045 DOI: 10.1155/2016/7361613] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/05/2015] [Indexed: 01/10/2023]
Abstract
Alzheimer's disease (AD) is a complex age-related neurodegenerative disease. In this review, we carefully detail amyloid-β metabolism and its role in AD. We also consider the various genetic animal models used to evaluate therapeutics. Finally, we consider the role of synthetic and plant-based compounds in therapeutics.
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Affiliation(s)
- Sandeep Kumar Singh
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Saurabh Srivastav
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Amarish Kumar Yadav
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Saripella Srikrishna
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India
| | - George Perry
- Department of Biology, The University of Texas at San Antonio, San Antonio, TX 78249, USA
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Wu L, Guo QS, Liu YQ, Sun QJ. Fluorescence Resonance Energy Transfer-Based Ratiometric Fluorescent Probe for Detection of Zn2+ Using a Dual-Emission Silica-Coated Quantum Dots Mixture. Anal Chem 2015; 87:5318-23. [DOI: 10.1021/acs.analchem.5b00514] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Liang Wu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Qing-Sheng Guo
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yu-Qian Liu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Qing-Jiang Sun
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
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47
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Wei T, Wang J, Chen Y, Han Y. Combining the PeT and ICT mechanisms into one chemosensor for the highly sensitive and selective detection of zinc. RSC Adv 2015. [DOI: 10.1039/c5ra11194c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel fluorescent sensor (ZS1) based on the dual-mechanism of PeT/ICT for the highly sensitive and selective detection of Zn2+was designed and synthesized.
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Affiliation(s)
- Ting Wei
- Department of Chemistry
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Jinglu Wang
- Department of Chemistry
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Yu Chen
- Department of Chemistry
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
| | - Yifeng Han
- Department of Chemistry
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology
- Zhejiang Sci-Tech University
- Hangzhou
- China
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48
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Hens A, Rajak KK. Selective fluorometric detection of F− and Zn(ii) ions by a N, O coordinating sensor and naked eye detection of Cu(ii) ions in mixed-aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra05145b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A N, O coordinating sensor fluorogenically detects fluoride anions (λex = 330 nm, λem = 450 nm) with blue emission and Zn(ii) ions with green emission (λex = 405 nm, λem = 515 nm) as well as colorimetrically detecting copper ions.
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Affiliation(s)
- Amar Hens
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
| | - Kajal Krishna Rajak
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
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49
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Hens A, Maity A, Rajak KK. N , N coordinating schiff base ligand acting as a fluorescence sensor for zinc(II) and colorimetric sensor for copper(II), and zinc(II) in mixed aqueous media. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.08.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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50
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Lu H, Hu J, Li J, Pang W, Hu Y, Yang H, Li W, Huang C, Zhang M, Jiang Y. Optimal dose of zinc supplementation for preventing aluminum-induced neurotoxicity in rats. Neural Regen Res 2014; 8:2754-62. [PMID: 25206586 PMCID: PMC4145991 DOI: 10.3969/j.issn.1673-5374.2013.29.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/30/2013] [Indexed: 12/02/2022] Open
Abstract
Zinc supplementation can help maintain learning and memory function in rodents. In this study, we hypothesized that zinc supplementation could antagonize the neurotoxicity induced by aluminum in rats. Animals were fed a diet containing different doses of zinc (50, 100, 200 mg/kg) for 9 weeks, and orally administered aluminum chloride (300 mg/kg daily) from the third week for 7 consecutive weeks. Open-field behavioral test results showed that the number of rearings in the group given the 100 mg/kg zinc supplement was significantly increased compared with the group given the 50 mg/kg zinc supplement. Malondialdehyde content in the cerebrum was significantly decreased, while dopamine and 5-hydroxytryptamine levels were increased in the groups given the diet supplemented with 100 and 200 mg/kg zinc, compared with the group given the diet supplemented with 50 mg/kg zinc. The acetylcholinesterase activity in the cerebrum was significantly decreased in the group given the 100 mg/kg zinc supplement. Hematoxylin-eosin staining revealed evident pathological damage in the hippocampus of rats in the group given the diet supplemented with 50 mg/kg zinc, but the damage was attenuated in the groups given the diet supplemented with 100 and 200 mg/kg zinc. Our findings suggest that zinc is a potential neuroprotective agent against aluminum-induced neurotoxicity in rats, and the optimal dosages are 100 and 200 mg/kg.
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Affiliation(s)
- Hao Lu
- Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, Sichuan Province, China ; Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China
| | - Jianyang Hu
- Department of Hepatobiliary Surgery, Children's Hospital, Chongqing Medical University, Chongqing 400014, China
| | - Jing Li
- Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China ; Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Wei Pang
- Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China
| | - Yandan Hu
- Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, Sichuan Province, China ; Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China
| | - Hongpeng Yang
- Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China
| | - Wenjie Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou 450001, Henan Province, China
| | - Chengyu Huang
- Department of Nutrition and Food Hygiene, West China School of Public Health, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Mingman Zhang
- Department of Hepatobiliary Surgery, Children's Hospital, Chongqing Medical University, Chongqing 400014, China
| | - Yugang Jiang
- Department of Nutrition, Institute of Health & Environmental Medicine, Academy of Military Medical Sciences, Tianjin 300050, China
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