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Singh D, Ibrahim A, Kumar P, Gupta R. Methylene Spacer Mediated Detection Switch Between Copper and Zinc Ions by Two Coumarin‐Pyrene Based Chemosensors. ChemistrySelect 2022. [DOI: 10.1002/slct.202202574] [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)
- Devender Singh
- Department of Chemistry University of Delhi New Delhi 110007 India
| | - Annan Ibrahim
- Department of Chemistry University of Delhi New Delhi 110007 India
| | - Pramod Kumar
- Department of Chemistry Mahamana Malviya College Khekra (Baghpat) C.C.S. University Meerut India
| | - Rajeev Gupta
- Department of Chemistry University of Delhi New Delhi 110007 India
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Yadav P, Gond S, Shekher A, Gupta SC, Singh UP, Singh VP. A multifunctional basic pH indicator probe for distinguishable detection of Co 2+, Cu 2+ and Zn 2+ with its utility in mitotracking and monitoring cytoplasmic viscosity in apoptotic cells. Dalton Trans 2022; 51:6927-6935. [PMID: 35445683 DOI: 10.1039/d2dt00286h] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metal ions such as Co2+, Cu2+ and Zn2+ have extensive applications in biological and industrial realms, but the toxicity caused by these ions poses a serious threat to mankind. However, there is no report in the literature on the development of a chemosensor for distinguishable detection of these toxic ions. Addressing this challenge, a multifunctional probe as a basic pH indicator with both colorimetric and fluorescence turn-on responses has been reported. The probe selectively discriminates Co2+, Cu2+ and Zn2+ ions with brown, dark yellow and greenish yellow colors, respectively, in DMF : water (9 : 1 v/v, HEPES 10 mM). Additionally, a fluorescence turn-on response specific to Zn2+ has also been observed. The sensing mechanism has been explored using UV-Vis, fluorescence spectroscopy and 1H NMR titration and confirmed with computational results. The inhibition of CN isomerization and excited state intramolecular proton transfer (ESIPT) along with chelation enhanced fluorescence emission (CHEF) result in fluorescence enhancement with Zn2+. Job's plot and HRMS spectra confirm a 1 : 1 (L : M) stoichiometry between the probe and metal ions. The probe is able to exhibit excellent viscochromism in DMF : glycerol medium. Live cell imaging on SiHa cells has been successfully performed for intra-cellular detection of Zn2+ at basic pH. Furthermore, the probe displays its utility in mitotracking and monitoring cytoplasmic viscosity changes in SiHa cells. It is efficiently used to recognize the apoptosis process by displaying an enhancement in fluorescence intensity from cancerous SiHa cells to apoptotic cells.
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Affiliation(s)
- Pranjalee Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Sarita Gond
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Anusmita Shekher
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Subash Chandra Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.,Department of Biochemistry, All India Institute of Medical Sciences, Guwahati, Assam, India
| | - Udai P Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Vinod P Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Cruz Reina LJ, Durán-Aranguren DD, Forero-Rojas LF, Tarapuez-Viveros LF, Durán-Sequeda D, Carazzone C, Sierra R. Chemical composition and bioactive compounds of cashew (Anacardium occidentale) apple juice and bagasse from Colombian varieties. Heliyon 2022; 8:e09528. [PMID: 35663750 PMCID: PMC9156865 DOI: 10.1016/j.heliyon.2022.e09528] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 02/20/2022] [Accepted: 05/18/2022] [Indexed: 12/15/2022] Open
Abstract
Cashew nut production generates large amounts of cashew apple as residue. In Colombia, cashew cultivation is increasing together with the concerns on residue management. The objective of this study was to provide the first chemical, physical and thermal decomposition characterization of cashew apple from Colombian varieties harvested in Vichada, Colombia. This characterization was focused to identify the important bioactive and natural compounds that can be further valorized in the formulation of food, nutraceuticals, and pharmacological products. The results obtained in this study are helpful to portray the cashew apple as a potential by-product due to its renewable nature and valuable composition, instead of seeing it just as an agricultural residue. For that, cashew apples of Regional 8315 and Mapiria varieties were studied. The natural juice (cashew apple juice) that was extracted from the cashew apples and the remanent solids (cashew apple bagasse) were separately analyzed. The HPLC analytical technique was used to determine the concentration of bioactive compounds, structural carbohydrates, and soluble sugars that constitute this biomass. Spectrophotometric techniques were used to determine the concentration of tannins, carotenoids, and total polyphenols. Mineral content and antioxidant activity (DPPH and ABTS assays) were determined in the biomass. Also, the thermal decomposition under an inert atmosphere or pyrolysis was performed on cashew apple bagasse. The varieties of cashew apple studied in this work showed similar content of bioactive compounds, total phenolic content, and structural carbohydrates. However, the Mapiria variety showed values slightly higher than the Regional 8315. Regarding cashew apple juice, it is rich in tannins and ascorbic acid with values of 191 mg/100 mL and 70 mg/100 mL, respectively, for Mapiria variety. Additionally, the principal reservoir of bioactive compounds and constitutive carbohydrates was the cashew apple bagasse. About 50 wt.% of it was composed of cellulose and hemicellulose. Also, in the bagasse, the ascorbic acid content was in a range of 180–200 mg/100 g, which is higher than other fruits and vegetables. Moreover, alkaloids were identified in cashew apples. The maximum value of antioxidant activity (DPPH assay: 405 TEs/g) was observed in the bagasse of Mapiria variety. The bagasse thermal decomposition started around 150 °C when the structural carbohydrates and other constitutive substances started to degrade. After thermogravimetric analysis, a remanent of 20% of the initial weight suggested the formation of a rich-carbon solid, which could correspond to biochar. Therefore, the cashew apple harvested in Vichada is a valuable reservoir of a wide range of biomolecules that potentially could be valorized into energy, foods, and pharmacologic applications. Nevertheless, future work is necessary to describe the complex compounds of this residual biomass that are still unknown.
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Affiliation(s)
- Luis J. Cruz Reina
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
- Corresponding author.
| | - Daniel David Durán-Aranguren
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Laura Fernanda Forero-Rojas
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Luisa Fernanda Tarapuez-Viveros
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Dinary Durán-Sequeda
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Chiara Carazzone
- Laboratory of Advanced Analytical Techniques in Natural Products, Department of Chemistry, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
| | - Rocío Sierra
- Product and Processes Design Group, Department of Chemical and Food Engineering, Universidad de Los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia
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Kawahara M, Sadakane Y, Mizuno K, Kato-Negishi M, Tanaka KI. Carnosine as a Possible Drug for Zinc-Induced Neurotoxicity and Vascular Dementia. Int J Mol Sci 2020; 21:ijms21072570. [PMID: 32272780 PMCID: PMC7177235 DOI: 10.3390/ijms21072570] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/14/2022] Open
Abstract
Increasing evidence suggests that the metal homeostasis is involved in the pathogenesis of various neurodegenerative diseases including senile type of dementia such as Alzheimer’s disease, dementia with Lewy bodies, and vascular dementia. In particular, synaptic Zn2+ is known to play critical roles in the pathogenesis of vascular dementia. In this article, we review the molecular pathways of Zn2+-induced neurotoxicity based on our and numerous other findings, and demonstrated the implications of the energy production pathway, the disruption of calcium homeostasis, the production of reactive oxygen species (ROS), the endoplasmic reticulum (ER)-stress pathway, and the stress-activated protein kinases/c-Jun amino-terminal kinases (SAPK/JNK) pathway. Furthermore, we have searched for substances that protect neurons from Zn2+-induced neurotoxicity among various agricultural products and determined carnosine (β-alanyl histidine) as a possible therapeutic agent for vascular dementia.
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Affiliation(s)
- Masahiro Kawahara
- Department of Bio-Analytical Chemistry, Faculty of Pharmacy, Musashino University, Tokyo 202-8585, Japan; (M.K.-N.); (K.T.)
- Correspondence: ; Tel.: +81–42–468–8299
| | - Yutaka Sadakane
- Graduate School of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan;
| | - Keiko Mizuno
- Department of Forensic Medicine, Faculty of Medicine, Yamagata University, Yamagata 990-9585, Japan;
| | - Midori Kato-Negishi
- Department of Bio-Analytical Chemistry, Faculty of Pharmacy, Musashino University, Tokyo 202-8585, Japan; (M.K.-N.); (K.T.)
| | - Ken-ichiro Tanaka
- Department of Bio-Analytical Chemistry, Faculty of Pharmacy, Musashino University, Tokyo 202-8585, Japan; (M.K.-N.); (K.T.)
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Fahmy HM, Aly EM, Mohamed FF, Noor NA, Elsayed AA. Neurotoxicity of green- synthesized magnetic iron oxide nanoparticles in different brain areas of wistar rats. Neurotoxicology 2019; 77:80-93. [PMID: 31899250 DOI: 10.1016/j.neuro.2019.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 12/22/2019] [Accepted: 12/27/2019] [Indexed: 12/20/2022]
Abstract
AIMS The aim of the present study was to evaluate the toxicity of magnetic iron oxide nanoparticles (MIONs) which were synthesized using carob leaf extract on various brain areas of Wistar rats. MAIN METHODS Carob leaf synthesized-MIONs were characterized using different techniques: Dynamic Light Scattering (DLS), Transmission Electron Microscope (TEM), UV-vis spectrophotometer, Fourier Transform infrared (FTIR), X-Ray Diffraction (XRD) and Atomic Force Microscope (AFM). The toxicity of MIONs in vivo was evaluated by: monitoring rat's body weight, measuring iron content in different brain areas, evaluating some oxidative stress parameters, estimating acetylcholinesterase (AChE) in addition to histopathological investigations. KEY FINDINGS The present study demonstrated no body weight changes of MIONs- treated rats. According to the conditions of the present study, the hippocampus and striatum were the most affected areas and demonstrated neuronal degeneration due to MIONs exposure. MIONs treatment of Wistar rats, also affected the iron homeostasis in both striatum and midbrain by decreasing iron content in these areas. The least affected areas were thalamus and cerebellum. The histopathological examination of brain areas demonstrated moderate neuronal degeneration in hippocampus and striatum, mild neuronal degeneration in cortex and slight degeneration in hypothalamus and pons-medulla areas were detected. SIGNIFICANCE The results suggested that MIONs have a toxic impact on different brain areas and the effect varies according to the brain area.
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Affiliation(s)
- Heba M Fahmy
- Biophysics Department, Faculty of Science, Cairo University, 12613, Giza, Egypt.
| | - Esraa M Aly
- Biophysics Department, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Faten F Mohamed
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, 12613, Giza, Egypt
| | - Neveen A Noor
- Zoology Department, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Anwar A Elsayed
- Biophysics Department, Faculty of Science, Cairo University, 12613, Giza, Egypt
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Xavier ADS, Furtado DZS, Assunção NA, Nascimento AN. Bioacessibility of Fe and Zn (associated to proteins) in cashew nut. J Food Compost Anal 2019. [DOI: 10.1016/j.jfca.2019.103259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Sezer Tuncsoy B, Tuncsoy M, Gomes T, Sousa V, Teixeira MR, Bebianno MJ, Ozalp P. Effects of Copper Oxide Nanoparticles on Tissue Accumulation and Antioxidant Enzymes of Galleria mellonella L. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 102:341-346. [PMID: 30600390 DOI: 10.1007/s00128-018-2529-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
Effects of copper oxide nanoparticles (CuO NPs) were investigated in the midgut and fat body of Galleria mellonella. Fourth instar larvae were exposed to 10 µg Cu/L of CuO until becoming last instar larvae, and catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-s-transferase (GST) and acetylcholinesterase (AChE) and metal accumulation were evaluated. Copper accumulation was observed in midgut and fat body tissues of G. mellonella larvae exposed to CuO NPs. CuO NPs increased CAT activities in midgut and fat body, while SOD activities were decreased. CuO NPs exhibited significant increases in GST activity in fat body, while no significant differences were observed in the midgut of G. mellonella larvae. AChE activity significantly decreased in the midgut of G. mellonella whereas there is no significant effect on fat body in CuO NPs exposed larvae. In overall, these findings demonstrate that tissue accumulation and oxidative stress that is countered by antioxidant enzymes occur when G. mellonella larvae exposed to environmental concentration of CuO nanoparticles.
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Affiliation(s)
- Benay Sezer Tuncsoy
- Department of Biology, Faculty of Science and Letters, University of Cukurova, 01330, Adana, Turkey.
| | - Mustafa Tuncsoy
- Department of Biology, Faculty of Science and Letters, University of Cukurova, 01330, Adana, Turkey
| | - Tânia Gomes
- Norwegian Institute for Water Research (NIVA), Gaustadalleen 21, 0349, Oslo, Norway
| | - Vânia Sousa
- CENSE, Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Margarida Ribau Teixeira
- CENSE, Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Maria João Bebianno
- CIMA, Faculty of Science and Technology, University of Algarve, Campus de Gambelas, 8005-139, Faro, Portugal
| | - Pinar Ozalp
- Department of Biology, Faculty of Science and Letters, University of Cukurova, 01330, Adana, Turkey
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Ferranco A, Basak S, Lough A, Kraatz HB. Metal coordination of ferrocene–histidine conjugates. Dalton Trans 2017; 46:4844-4859. [PMID: 28349138 DOI: 10.1039/c7dt00456g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Synthesis and complete structural characterization of ferrocene–histidine dipeptides including detailed analysis of the ligand–metal complexation.
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Affiliation(s)
- Annaleizle Ferranco
- Department of Physical and Environmental Sciences
- University of Toronto
- Toronto
- M1C 1A4 Canada
- Department of Chemistry
| | - Shibaji Basak
- Department of Physical and Environmental Sciences
- University of Toronto
- Toronto
- M1C 1A4 Canada
- Department of Chemistry
| | - Alan Lough
- Department of Chemistry
- University of Toronto
- Toronto
- M5S 3H6 Canada
| | - Heinz-Bernhard Kraatz
- Department of Physical and Environmental Sciences
- University of Toronto
- Toronto
- M1C 1A4 Canada
- Department of Chemistry
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Abu Ali H, Omar SN, Darawsheh MD, Fares H. Synthesis, characterization and antimicrobial activity of zinc(II) ibuprofen complexes with nitrogen-based ligands. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1149819] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hijazi Abu Ali
- Department of Chemistry, Birzeit University, Birzeit, Palestine
| | - Suhad N. Omar
- Department of Chemistry, Birzeit University, Birzeit, Palestine
| | | | - Hadeel Fares
- Department of Chemistry, Birzeit University, Birzeit, Palestine
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Milivojević T, Glavan G, Božič J, Sepčić K, Mesarič T, Drobne D. Neurotoxic potential of ingested ZnO nanomaterials on bees. CHEMOSPHERE 2015; 120:547-554. [PMID: 25305659 DOI: 10.1016/j.chemosphere.2014.07.054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 07/17/2014] [Accepted: 07/18/2014] [Indexed: 06/04/2023]
Abstract
The honey bee is among most important pollinators threatened by environmental pollution, pest control and potentially, by products of nanotechnologies. The aim of the current study was an analysis of the neurotoxic potential of ingested zinc oxide nanomaterials (ZnO NMs) or zinc ions (Zn(2+)) on honey bees. We analysed a variety of biomarkers, including metabolic impairment, feeding rate, and survival, as well as the activities of a stress-related enzyme glutathione S-transferase, and the neurotoxicity biomarker acetylcholinesterase. Acetylcholinesterase activity was found to be elevated in bees exposed to either of the tested substances. In addition, we observed increased feeding rate in the group treated with Zn(2+) but not with ZnO NMs or control group. The observed effects we relate primarily to Zn(2+) ions. Here we provide evidence that zinc ions either originating from Zn salt or Zn-based NPs have a neurotoxic potential and thus might contribute to colony survival.
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Affiliation(s)
- Tamara Milivojević
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia
| | - Gordana Glavan
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia
| | - Janko Božič
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia
| | - Kristina Sepčić
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia
| | - Tina Mesarič
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia
| | - Damjana Drobne
- University of Ljubljana, Biotechnical Faculty, Department of Biology, Večna pot 111, Ljubljana SI-1000, Slovenia; Centre of Excellence in Advanced Materials and Technologies for the Future (CO NAMASTE), Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; Centre of Excellence in Nanoscience and Nanotechnology (CO Nanocenter), Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
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de Lima ACS, Soares DJ, da Silva LMR, de Figueiredo RW, de Sousa PHM, de Abreu Menezes E. In vitro bioaccessibility of copper, iron, zinc and antioxidant compounds of whole cashew apple juice and cashew apple fibre (Anacardium occidentale L.) following simulated gastro-intestinal digestion. Food Chem 2014; 161:142-7. [PMID: 24837932 DOI: 10.1016/j.foodchem.2014.03.123] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 03/20/2014] [Accepted: 03/26/2014] [Indexed: 10/25/2022]
Abstract
Considering the lack of research studies about nutrients' bioaccessibility in cashew apple, in this study the whole cashew apple juice and the cashew apple fibre were submitted to simulated in vitro gastrointestinal digestion. The samples were analysed before and after digestion and had their copper, iron, zinc, ascorbic acid, total extractable phenols and total antioxidant activity assessed. As a result, for the whole cashew apple juice, the content of copper and iron minerals bioaccessible fraction were 15% and 11.5% and for zinc this level was 3.7%. Regarding the cashew apple fibre, the bioaccessible fraction for these minerals was lower than 5%. The ascorbic acid, total extractable polyphenols and total antioxidant activity bioaccessible fraction for whole cashew apple juice showed bioaccessibility percentages of 26.2%, 39% and 27%, respectively, while for the cashew apple fibre, low bioaccessibles levels were found. The bioacessible percentage of zinc, ascorbic acid and total extractable polyphenols were higher in cashew apple juice than cashew apple fibre.
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Affiliation(s)
- Ana Cristina Silva de Lima
- Departamento de Tecnologia de Alimentos, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus Universitário do Pici, Fortaleza, Ceara 60356-000, Brazil.
| | - Denise Josino Soares
- Departamento de Tecnologia de Alimentos, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus Universitário do Pici, Fortaleza, Ceara 60356-000, Brazil.
| | - Larissa Morais Ribeiro da Silva
- Departamento de Tecnologia de Alimentos, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus Universitário do Pici, Fortaleza, Ceara 60356-000, Brazil.
| | - Raimundo Wilane de Figueiredo
- Departamento de Tecnologia de Alimentos, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus Universitário do Pici, Fortaleza, Ceara 60356-000, Brazil.
| | - Paulo Henrique Machado de Sousa
- Instituto de Cultura e Arte, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus Universitário do Pici, Fortaleza, Ceara 60356-000, Brazil.
| | - Eveline de Abreu Menezes
- Universidade Estadual do Paiuí, Campus Professor Antonio Geovanne de Sousa Piripiri, Avenida Marechal Castelo Branco, 180 Petecas, Piripiri, Piaui 64260-000, Brazil.
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Chai X, Zhou X, Zhu A, Zhang L, Qin Y, Shi G, Tian Y. A Two-Channel Ratiometric Electrochemical Biosensor for In Vivo Monitoring of Copper Ions in a Rat Brain Using Gold Truncated Octahedral Microcages. Angew Chem Int Ed Engl 2013; 52:8129-33. [DOI: 10.1002/anie.201302958] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Indexed: 01/09/2023]
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13
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Chai X, Zhou X, Zhu A, Zhang L, Qin Y, Shi G, Tian Y. A Two-Channel Ratiometric Electrochemical Biosensor for In Vivo Monitoring of Copper Ions in a Rat Brain Using Gold Truncated Octahedral Microcages. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302958] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zahran S, Mielke HW, Weiler S, Hempel L, Berry KJ, Gonzales CR. Associations between standardized school performance tests and mixtures of Pb, Zn, Cd, Ni, Mn, Cu, Cr, Co, and V in community soils of New Orleans. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2012; 169:128-35. [PMID: 22705504 DOI: 10.1016/j.envpol.2012.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 05/09/2012] [Accepted: 05/12/2012] [Indexed: 05/06/2023]
Abstract
In New Orleans a strong inverse association was previously identified between community soil lead and 4th grade school performance. This study extends the association to zinc, cadmium, nickel, manganese, copper, chromium, cobalt, and vanadium in community soil and their comparative effects on 4th grade school performance. Adjusting for poverty, food security, racial composition, and teacher-student ratios, regression results show that soil metals variously reduce and compress student scores. Soil metals account for 22%-24% while food insecurity accounts for 29%-37% of variation in school performance. The impact on grade point averages were Ni > Co > Mn > Cu ~ Cr ~ Cd > Zn > Pb, but metals are mixtures in soils. The quantities of soil metal mixtures vary widely across the city with the largest totals in the inner city and smallest totals in the outer city. School grade point averages are lowest where the soil metal mixtures and food insecurity are highest.
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Affiliation(s)
- Sammy Zahran
- Department of Economics, Colorado State University, Fort Collins, CO 80523-1771, USA.
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15
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Cope EC, Morris DR, Levenson CW. Improving treatments and outcomes: an emerging role for zinc in traumatic brain injury. Nutr Rev 2012; 70:410-3. [PMID: 22747843 DOI: 10.1111/j.1753-4887.2012.00486.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Traumatic brain injury is associated with a wide variety of behavioral deficits, including memory loss, depression, and anxiety. While treatments for these outcomes are currently limited, human clinical data suggest that supplemental zinc can be used during recovery to improve cognitive and behavioral deficits associated with brain injury. Additionally, pre-clinical models suggest that zinc may increase resilience to traumatic brain injury, making it potentially useful in populations at risk for injury.
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Affiliation(s)
- Elise C Cope
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, USA
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16
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Metal ion physiopathology in neurodegenerative disorders. Neuromolecular Med 2009; 11:223-38. [PMID: 19946766 DOI: 10.1007/s12017-009-8102-1] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Accepted: 10/14/2009] [Indexed: 12/14/2022]
Abstract
Metal dyshomeostasis in the brain (BMD) has often been proposed as a possible cause for several neurodegenerative disorders (NDs). Nevertheless, the precise nature of the biochemical mechanisms of metal involvement in NDs is still largely unknown. Mounting evidence suggests that normal aging itself is characterized by, among other features, a significant degree of metal ion dysmetabolism in the brain. This is probably the result of a progressive deterioration of the metal regulatory systems and, at least in some cases, of life-long metal exposure and brain accumulation. Although alterations of metal metabolism do occur to some extent in normal aging, they appear to be highly enhanced under various neuropathological conditions, causing increased oxidative stress and favoring abnormal metal-protein interactions. Intriguingly, despite the fact that most common NDs have a distinct etiological basis, they share striking similarities as they are all characterized by a documented brain metal impairment. This review will primarily focus on the alterations of metal homeostasis that are observed in normal aging and in Alzheimer's disease. We also present a brief survey on BMD in other NDs (Amyotrophic Lateral Sclerosis, Parkinson's, and Prion Protein disease) in order to highlight what represents the most reliable evidence supporting a crucial involvement of metals in neurodegeneration. The opportunities for metal-targeted pharmacological strategies in the major NDs are briefly outlined as well.
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Affiliation(s)
- Reagan McRae
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - Pritha Bagchi
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - S. Sumalekshmy
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
| | - Christoph J. Fahrni
- School of Chemistry and Biochemistry and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, Georgia 30332
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Tõugu V, Karafin A, Zovo K, Chung RS, Howells C, West AK, Palumaa P. Zn(II)- and Cu(II)-induced non-fibrillar aggregates of amyloid-beta (1-42) peptide are transformed to amyloid fibrils, both spontaneously and under the influence of metal chelators. J Neurochem 2009; 110:1784-95. [PMID: 19619132 DOI: 10.1111/j.1471-4159.2009.06269.x] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aggregation of amyloid-beta (Abeta) peptides is a central phenomenon in Alzheimer's disease. Zn(II) and Cu(II) have profound effects on Abeta aggregation; however, their impact on amyloidogenesis is unclear. Here we show that Zn(II) and Cu(II) inhibit Abeta(42) fibrillization and initiate formation of non-fibrillar Abeta(42) aggregates, and that the inhibitory effect of Zn(II) (IC(50) = 1.8 micromol/L) is three times stronger than that of Cu(II). Medium and high-affinity metal chelators including metallothioneins prevented metal-induced Abeta(42) aggregation. Moreover, their addition to preformed aggregates initiated fast Abeta(42) fibrillization. Upon prolonged incubation the metal-induced aggregates also transformed spontaneously into fibrils, that appear to represent the most stable state of Abeta(42). H13A and H14A mutations in Abeta(42) reduced the inhibitory effect of metal ions, whereas an H6A mutation had no significant impact. We suggest that metal binding by H13 and H14 prevents the formation of a cross-beta core structure within region 10-23 of the amyloid fibril. Cu(II)-Abeta(42) aggregates were neurotoxic to neurons in vitro only in the presence of ascorbate, whereas monomers and Zn(II)-Abeta(42) aggregates were non-toxic. Disturbed metal homeostasis in the vicinity of zinc-enriched neurons might pre-dispose formation of metal-induced Abeta aggregates, subsequent fibrillization of which can lead to amyloid formation. The molecular background underlying metal-chelating therapies for Alzheimer's disease is discussed in this light.
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Affiliation(s)
- Vello Tõugu
- Department of Gene Technology, Tallinn University of Technology, Tallinn, Estonia.
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Determination of trace elements in human brain tissues using neutron activation analysis. J Radioanal Nucl Chem 2008. [DOI: 10.1007/s10967-008-1009-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Su CK, Li TW, Sun YC. Online In-Tube Solid-Phase Extraction Using a Nonfunctionalized PVC Tube Coupled with ICPMS for in Vivo Monitoring of Trace Metals in Rat Brain Microdialysates. Anal Chem 2008; 80:6959-67. [DOI: 10.1021/ac800802e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. K. Su
- Department of Biomedical Engineering and Environmental Sciences and Nuclear Science and Technology Development Center, National Tsing-Hua University, 30013 Hsinchu, Taiwan
| | - T. W. Li
- Department of Biomedical Engineering and Environmental Sciences and Nuclear Science and Technology Development Center, National Tsing-Hua University, 30013 Hsinchu, Taiwan
| | - Y. C. Sun
- Department of Biomedical Engineering and Environmental Sciences and Nuclear Science and Technology Development Center, National Tsing-Hua University, 30013 Hsinchu, Taiwan
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Tõugu V, Karafin A, Palumaa P. Binding of zinc(II) and copper(II) to the full-length Alzheimer's amyloid-beta peptide. J Neurochem 2008; 104:1249-59. [PMID: 18289347 DOI: 10.1111/j.1471-4159.2007.05061.x] [Citation(s) in RCA: 181] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is evidence that binding of metal ions like Zn2+ and Cu2+ to amyloid beta-peptides (Abeta) may contribute to the pathogenesis of Alzheimer's disease. Cu2+ and Zn2+ form complexes with Abeta peptides in vitro; however, the published metal-binding affinities of Abeta vary in an enormously large range. We studied the interactions of Cu2+ and Zn2+ with monomeric Abeta(40) under different conditions using intrinsic Abeta fluorescence and metal-selective fluorescent dyes. We showed that Cu(2+) forms a stable and soluble 1 : 1 complex with Abeta(40), however, buffer compounds act as competitive copper-binding ligands and affect the apparent K(D). Buffer-independent conditional K(D) for Cu(II)-Abeta(40) complex at pH 7.4 is equal to 0.035 micromol/L. Interaction of Abeta(40) with Zn2+ is more complicated as partial aggregation of the peptide occurs during zinc titration experiment and in the same time period (within 30 min) the initial Zn-Abeta(40) complex (K(D) = 60 micromol/L) undergoes a transition to a more tight complex with K(D) approximately 2 micromol/L. Competition of Abeta(40) with ion-selective fluorescent dyes Phen Green and Zincon showed that the K(D) values determined from intrinsic fluorescence of Abeta correspond to the binding of the first Cu2+ and Zn2+ ions to the peptide with the highest affinity. Interaction of both Zn2+ and Cu2+ ions with Abeta peptides may occur in brain areas affected by Alzheimer's disease and Zn2+-induced transition in the peptide structure might contribute to amyloid plaque formation.
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Affiliation(s)
- Vello Tõugu
- Department of Gene Technology, Tallinn University of Technology, Akadeemia tee, Tallinn, Estonia.
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Kállay C, Osz K, Dávid A, Valastyán Z, Malandrinos G, Hadjiliadis N, Sóvágó I. Zinc(ii) binding ability of tri-, tetra- and penta-peptides containing two or three histidyl residues. Dalton Trans 2007:4040-7. [PMID: 17828365 DOI: 10.1039/b706303b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macroscopic and microscopic protonation processes and zinc(II) complexes of a series of multihistidine peptides (Ac-HGH-OH, Ac-HGH-NHMe, Ac-HHGH-OH, Ac-HHGH-NHMe, Ac-HVGDH-NH(2), Ac-HHVGD-NH(2), Ac-HVHAH-NH(2), Ac-HAHVH-NH(2), Ac-HPHAH-NH(2) and Ac-HAHPH-NH(2)) were studied by potentiometric, NMR and ESI-MS spectroscopic techniques. Protonations of histidyl imidazole-N donor functions were not much affected by the number and location of histidyl residues, but the presence of C-terminal carboxylate groups had a significant impact on the basicities of the neighbouring histidyl sites. The formation of 2N(im) and 3N(im) macrochelates with the stoichiometry of [ZnL] was the major process in the complexation reactions of all peptides followed by the formation of hydroxo or amide bonded species. Thermodynamic stabilities of the zinc(II) complexes were primarily determined by the number of histidyl residues, but the presence of C-terminal carboxylate functions has also a significant contribution to metal binding. The stabilizing effect of the aspartyl beta-carboxylate group was also observed, but its extent is much weaker than that of the C-terminal carboxylate with a neighbouring histidyl residue. Zinc(II) promoted peptide amide deprotonation and co-ordination was observed only in the zinc(II)-Ac-HHVGD-NH(2) system above pH 8.
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Affiliation(s)
- Csilla Kállay
- Department of Inorganic and Analytical Chemistry, University of Debrecen, H-4010, Debrecen, Hungary
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Yamaguchi M. Regulatory mechanism of food factors in bone metabolism and prevention of osteoporosis. YAKUGAKU ZASSHI 2006; 126:1117-37. [PMID: 17077614 DOI: 10.1248/yakushi.126.1117] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aging induces a decrease in bone mass, and osteoporosis with its accompanying decrease in bone mass is widely recognized as a major public health problem. Bone loss with increasing age may be due to decreased bone formation and increased bone resorption. Pharmacologic and nutritional factors may prevent bone loss with aging, although chemical compounds in food and plants which act on bone metabolism are poorly understood. We have found that isoflavones (including genistein and daidzein), which are contained in soybeans, have a stimulatory effect on osteoblastic bone formation and an inhibitory effect on osteoclastic bone resorption, thereby increasing bone mass. Menaquinone-7, an analogue of vitamin K(2) which is abundant in fermented soybeans, has been demonstrated to stimulate osteoblastic bone formation and to inhibit osteoclastic bone resorption. Of various carotenoids, beta-cryptoxanthin, which is abundant in Satsuma mandarin (Citrus unchiu MARC), has a stimulatory effect on osteoblastic bone formation and an inhibitory effect on osteoclastic bone resorption. The supplementation of these factors has a preventive effect on bone loss induced by ovariectomy in rats, which are an animal model of osteoporosis, and their intake has been shown to have a stimulatory effect on bone mass in humans. Factors with an anabolic effect on bone metabolism were found in extracts obtained from wasabi leafstalk (Wasabi japonica MATSUM), the marine alga Sargassum horneri, and bee pollen Cistus ladaniferus. Phytocomponent p-hydroxycinnamic acid was also found to have an anabolic effect on bone metabolism. Food chemical factors thus play a role in bone health and may be important in the prevention of bone loss with increasing age.
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Affiliation(s)
- Masayoshi Yamaguchi
- Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City 422-8526, Japan.
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