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Song L, Nguyen V, Xie J, Jia S, Chang CJ, Uchio E, Zi X. ATPase Copper Transporting Beta (ATP7B) Is a Novel Target for Improving the Therapeutic Efficacy of Docetaxel by Disulfiram/Copper in Human Prostate Cancer. Mol Cancer Ther 2024; 23:854-863. [PMID: 38417139 PMCID: PMC11150099 DOI: 10.1158/1535-7163.mct-23-0876] [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: 12/10/2023] [Revised: 01/31/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024]
Abstract
Docetaxel has been the standard first-line chemotherapy for lethal metastatic prostate cancer (mPCa) since 2004, but resistance to docetaxel treatment is common. The molecular mechanisms of docetaxel resistance remain largely unknown and could be amenable to interventions that mitigate resistance. We have recently discovered that several docetaxel-resistant mPCa cell lines exhibit lower uptake of cellular copper and uniquely express higher levels of a copper exporter protein ATP7B. Knockdown of ATP7B by silencing RNAs (siRNA) sensitized docetaxel-resistant mPCa cells to the growth-inhibitory and apoptotic effects of docetaxel. Importantly, deletions of ATP7B in human mPCa tissues predict significantly better survival of patients after their first chemotherapy than those with wild-type ATP7B (P = 0.0006). In addition, disulfiram (DSF), an FDA-approved drug for the treatment of alcohol dependence, in combination with copper, significantly enhanced the in vivo antitumor effects of docetaxel in a docetaxel-resistant xenograft tumor model. Our analyses also revealed that DSF and copper engaged with ATP7B to decrease protein levels of COMM domain-containing protein 1 (COMMD1), S-phase kinase-associated protein 2 (Skp2), and clusterin and markedly increase protein expression of cyclin-dependent kinase inhibitor 1 (p21/WAF1). Taken together, our results indicate a copper-dependent nutrient vulnerability through ATP7B exporter in docetaxel-resistant prostate cancer for improving the therapeutic efficacy of docetaxel.
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Affiliation(s)
- Liankun Song
- Department of Urology, University of California, Irvine, Orange, CA 92868, USA
| | - Vyvyan Nguyen
- Department of Urology, University of California, Irvine, Orange, CA 92868, USA
| | - Jun Xie
- Department of Urology, University of California, Irvine, Orange, CA 92868, USA
| | - Shang Jia
- Departments of Chemistry and Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720 USA
| | - Christopher J. Chang
- Departments of Chemistry and Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720 USA
| | - Edward Uchio
- Department of Urology, University of California, Irvine, Orange, CA 92868, USA
- Chao Family Comprehensive Cancer Center, University of California, Irvine, Orange, CA 92868, USA
| | - Xiaolin Zi
- Department of Urology, University of California, Irvine, Orange, CA 92868, USA
- Chao Family Comprehensive Cancer Center, University of California, Irvine, Orange, CA 92868, USA
- Veterans Affairs Long Beach Healthcare System, Long Beach, CA 90822, USA
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Kumar S, Arora A, Maikhuri VK, Chaudhary A, Kumar R, Parmar VS, Singh BK, Mathur D. Advances in chromone-based copper(ii) Schiff base complexes: synthesis, characterization, and versatile applications in pharmacology and biomimetic catalysis. RSC Adv 2024; 14:17102-17139. [PMID: 38808245 PMCID: PMC11130647 DOI: 10.1039/d4ra00590b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/20/2024] [Indexed: 05/30/2024] Open
Abstract
Chromones are well known as fundamental structural elements found in numerous natural compounds and medicinal substances. The Schiff bases of chromones have a much wider range of pharmacological applications such as antitumor, antioxidant, anti-HIV, antifungal, anti-inflammatory, and antimicrobial properties. A lot of research has been carried out on chromone-based copper(ii) Schiff-base complexes owing to their role in the organometallic domain and promise as potential bioactive cores. This review article is centered on copper(ii) Schiff-base complexes derived from chromones, highlighting their diverse range of pharmacological applications documented in the past decade, as well as the future research opportunities they offer.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
- Department of Chemistry and Environmental Science, Medgar Evers College 1638 Bedford Avenue, Brooklyn New York 11225 USA
| | - Aditi Arora
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
| | - Vipin K Maikhuri
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
| | - Ankita Chaudhary
- Department of Chemistry, Maitreyi College, University of Delhi Delhi India
| | - Rajesh Kumar
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
- Department of Chemistry, R. D. S College, B. R. A. Bihar University Muzaffarpur India
| | - Virinder S Parmar
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
- Department of Chemistry and Environmental Science, Medgar Evers College 1638 Bedford Avenue, Brooklyn New York 11225 USA
- Amity Institute of Click Chemistry and Research Studies, Amity University Sector 125 Noida 201313 Uttar Pradesh India
| | - Brajendra K Singh
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
| | - Divya Mathur
- Department of Chemistry, Bioorganic Research Laboratory, University of Delhi Delhi India
- Department of Chemistry, Daulat Ram College, University of Delhi Delhi India
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Perrais M, Trächsel B, Lenglet S, Pruijm M, Ponte B, Vogt B, Augsburger M, Rousson V, Bochud M, Thomas A. Reference values for plasma and urine trace elements in a Swiss population-based cohort. Clin Chem Lab Med 2024; 0:cclm-2023-1433. [PMID: 38641868 DOI: 10.1515/cclm-2023-1433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 04/07/2024] [Indexed: 04/21/2024]
Abstract
OBJECTIVES Trace elements (TEs) are ubiquitous. TE concentrations vary among individuals and countries, depending on factors such as living area, workplaces and diet. Deficit or excessive TEs concentrations have consequences on the proper functioning of human organism so their biomonitoring is important. The aim of this project was to provide reference values for TEs concentrations in the Swiss population. METHODS The 1,078 participants to the SKiPOGH cohort included in this study were aged 18-90 years. Their 24-h urine and/or plasma samples were analyzed by inductively coupled plasma mass spectrometry (ICP-MS) to determine 24 TEs concentrations: Ag, Al, As, Be, Bi, Cd, Co, Cr, Cu, Hg, I, Li, Mn, Mo, Ni, Pb, Pd, Pt, Sb, Se, Sn, Tl, V and Zn. Statistical tests were performed to evaluate the influence of covariates (sex, age, BMI, smoking) on these results. Reference intervals for the Swiss adult population were also defined. RESULTS TEs concentrations were obtained for respectively 994 and 903 persons in plasma and urine matrices. It was possible to define percentiles of interest (P50 and P95) for almost all the TEs. Differences in TEs distribution between men and women were noticed in both matrices; age was also a cofactor. CONCLUSIONS This first Swiss biomonitoring of a large TEs-panel offers reference values in plasma and in urine for the Swiss population. The results obtained in this study were generally in line with clinical recommendations and comparable to levels reported in other population-based surveys.
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Affiliation(s)
- Maïwenn Perrais
- Unit of Forensic Chemistry and Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Geneva University Hospital and University of Geneva, Geneva, Switzerland
- Faculty Unit of Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Bastien Trächsel
- 569258 Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Sébastien Lenglet
- Unit of Forensic Chemistry and Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Menno Pruijm
- Service of Nephrology, Lausanne University Hospitals and University of Lausanne, Lausanne, Switzerland
| | - Belen Ponte
- Division of Nephrology and Hypertension, Geneva University Hospitals, Geneva, Switzerland
| | - Bruno Vogt
- 27252 University Department of Nephrology and Hypertension, Inselspital, University Hospital Bern , Bern, Switzerland
| | - Marc Augsburger
- Unit of Forensic Chemistry and Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Valentin Rousson
- 569258 Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Murielle Bochud
- 569258 Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Aurélien Thomas
- Unit of Forensic Chemistry and Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Geneva University Hospital and University of Geneva, Geneva, Switzerland
- Faculty Unit of Toxicology, 658784 University Centre of Legal Medicine Lausanne-Geneva , Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Muñoz-Bravo C, Olmedo P, Gil F, Ruiz-Canela M, Martínez-González MA, Martínez MÁ, Babio N, Fitó M, Del Val JL, Corella D, Sorlí JV, Ros E, Fiol M, Estruch R, Santos-Lozano JM, Arós F, Serra-Majem L, Pintó X, Gómez-Gracia E, Gutiérrez-Bedmar M. Association between serum copper levels and risk of cardiovascular disease: A nested case-control study in the PREDIMED trial. Nutr Metab Cardiovasc Dis 2023; 33:2199-2208. [PMID: 37580236 DOI: 10.1016/j.numecd.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 08/16/2023]
Abstract
BACKGROUND AND AIM Certain trace elements have been associated with increased cardiovascular risk. The aim of this study was to evaluate the association between serum copper (S-Cu) levels and the risk of a first event of cardiovascular disease (CVD) in a population of older adults with high cardiovascular risk. METHODS AND RESULTS We conducted a case-control study nested within the PREDIMED trial. During a median follow-up of 4.8 years, a total of 207 incident cases diagnosed with CVD were matched for sex, age, and intervention group with 436 controls. Personal interviews, reviews of medical records, and validated questionnaires were used to assess known CVD risk factors. Biological serum samples were collected annually. Inductively coupled plasma mass spectrometry analysis was used to determine S-Cu levels. Adjusted odds ratios were calculated using multivariate conditional logistic regression models. All participants had S-Cu levels within the reference values, 750 μg/L to 1450 μg/L. Among men, but not among women, the mean S-Cu concentration was higher in cases 1014.1 μg/L than in controls 959.3 μg/L; (p = 0.004). In men, the multivariable-adjusted odds ratio for CVD was 2.36 (95% CI 1.07-5.20 for the comparison of the highest vs. the lowest quartile; p for trend = 0.02), in women, it was 0.43 (95% CI 0.11-1.70; p for trend = 0.165). CONCLUSION In older Spanish men with high cardiovascular risk, a significant association was observed between high S-Cu levels, but still within the reference values, and an increased risk of a first event of CVD. Our findings suggest a sex difference in CVD risk and S-Cu levels. To confirm this relationship and to analyze the differences observed between men and women, further studies are needed.
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Affiliation(s)
- Carlos Muñoz-Bravo
- Department of Public Health and Psychiatry, School of Medicine, University of Málaga, Málaga, Spain; Biomedical Research Institute of Malaga (IBIMA), Spain.
| | - Pablo Olmedo
- Department of Legal Medicine, Toxicology, and Physical Anthropology, School of Medicine, University of Granada, Granada, Spain
| | - Fernando Gil
- Department of Legal Medicine, Toxicology, and Physical Anthropology, School of Medicine, University of Granada, Granada, Spain
| | - Miguel Ruiz-Canela
- Department of Preventive Medicine and Public Health, School of Medicine, University of Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Miguel A Martínez-González
- Department of Preventive Medicine and Public Health, School of Medicine, University of Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - María Ángeles Martínez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Universitat Rovira i Virgili, Reus, Spain
| | - Nancy Babio
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Universitat Rovira i Virgili, Reus, Spain; Human Nutrition Unit, Institud d'Investigació Sanitaria Pere Virgili, Spain
| | - Montserrat Fitó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Cardiovascular Risk and Nutrition Research Group. Hospital Del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Jose L Del Val
- Unitat d'Avaluació, Sistemes d'Informació i Qualitat (BASIQ), Gerència Territorial Atenció Primària Barcelona Ciutat, Institut Català de la Salut, Barcelona, Spain; Fundació Institut Universitari per a la Recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain
| | - Dolores Corella
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Preventive Medicine, Universidad de Valencia, Valencia, Spain
| | - José V Sorlí
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Preventive Medicine, Universidad de Valencia, Valencia, Spain
| | - Emilio Ros
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Lipid Clinic, Endocrinology and Nutrition Service, Institut d'Investigations Biomèdiques August Pi I Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain
| | - Miquel Fiol
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Health Research Institute of the Balearic Islands (IdISBa), Hospital Son Espases, Palma de Mallorca, Spain
| | - Ramón Estruch
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Internal Medicine, IDIBAPS, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - José Manuel Santos-Lozano
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Family Medicine, Research Unit, Distrito Sanitario Atención Primaria Sevilla, Sevilla, Spain
| | - Fernando Arós
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Cardiology, Hospital Universitario de Álava, Vitoria, Spain
| | - Luis Serra-Majem
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Department of Clinical Sciences & Research Institute of Biomedical and Health Sciences, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Xavier Pintó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Lipid and Vascular Risk Unit, Internal Medicine Service, Hospital Universitario de Bellvitge, Hospitalet de Llobregat, Spain
| | - Enrique Gómez-Gracia
- Department of Public Health and Psychiatry, School of Medicine, University of Málaga, Málaga, Spain; Biomedical Research Institute of Malaga (IBIMA), Spain
| | - Mario Gutiérrez-Bedmar
- Department of Public Health and Psychiatry, School of Medicine, University of Málaga, Málaga, Spain; Biomedical Research Institute of Malaga (IBIMA), Spain; CIBERCV Cardiovascular Diseases, Instituto de Salud Carlos III (ISCIII), Madrid, Spain
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Deride C, Chihuailaf R, Arnés V, Morán G, Uberti B. Relationship Between Selenium, Copper, Zinc and Their Biomarkers in Blood and Skeletal Muscle Tissue in Adult Horses From Southern Chile. J Equine Vet Sci 2023; 128:104881. [PMID: 37422140 DOI: 10.1016/j.jevs.2023.104881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/01/2023] [Accepted: 07/03/2023] [Indexed: 07/10/2023]
Abstract
Microminerals are necessary for all bodily functions. In animal species, selenium (Se), copper (Cu) and zinc (Zn) all form part of antioxidant enzymes. Micromineral deficiencies, particularly Se, are well recognized in large animal species in Chile. Glutathion peroxidase (GPx) is a widely used biomarker for Se nutritional status and to diagnose Se deficiency in horses. Superoxide dismutase (SOD) is a Cu and Zn-dependant antioxidant enzyme, although it is not commonly used as a proxy for the nutritional status of these minerals. Ceruloplasmin (CP) is used as a biomarker of Cu nutritional status. This study´s objective was to explore correlation between said minerals and biomarkers in adult horses from southern Chile. Se, Cu, Zn, GPx, SOD, and CP were measured in whole blood of a group of 32 adult horses (5-15 years old). Further, a second group of 14 adult horses (5-15 years old) underwent gluteal muscle biopsies to determine Cu, Zn, GPx, and SOD. Correlations were determined by means of Pearson´s r coefficient. Significant correlations were found for blood GPx and Se (r = 0.79), blood GPx and SOD (r = -0.6), muscular GPx and SOD (r = 0.78), and Cu and CP (r = 0.48). These results confirm previously described strong association between blood GPx and Se in horses, validating the former´s use as a diagnostic proxy of Se deficiency in Chilean horses, and suggest significant interactions between GPx and SOD in blood and muscle tissue.
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Affiliation(s)
- Camila Deride
- Escuela de Graduados, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Ricardo Chihuailaf
- Instituto de Ciencias Clínicas Veterinarias, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Verónica Arnés
- Instituto de Ciencias Clínicas Veterinarias, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Gabriel Morán
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Benjamin Uberti
- Instituto de Ciencias Clínicas Veterinarias, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile.
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Yepes-Calderón M, Kremer D, Post A, Sotomayor CG, Seidel U, Huebbe P, Knobbe TJ, Lüersen K, Eisenga MF, Corpeleijn E, De Borst MH, Navis GJ, Rimbach G, Bakker SJL. Plasma Copper Concentration Is Associated with Cardiovascular Mortality in Male Kidney Transplant Recipients. Antioxidants (Basel) 2023; 12:antiox12020454. [PMID: 36830012 PMCID: PMC9952822 DOI: 10.3390/antiox12020454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open
Abstract
Kidney transplant recipients (KTR) are at increased risk of cardiovascular mortality. We investigated whether, in KTR, post-transplantation copper status is associated with the risk of cardiovascular mortality and potential effect modification by sex. In this cohort study, plasma copper was measured using mass spectrometry in extensively-phenotyped KTR with a functioning allograft >1-year. Cox regression analyses with the inclusion of multiplicative interaction terms were performed. In 660 KTR (53 ± 13 years old, 56% male), the median baseline plasma copper was 15.42 (IQR 13.53-17.63) µmol/L. During a median follow-up of 5 years, 141 KTR died, 53 (38%) due to cardiovascular causes. Higher plasma copper was associated with an increased risk of cardiovascular mortality in the overall KTR population (HR 1.37; 95% CI, 1.07-1.77 per 1-SD, p = 0.01). Sex was a significant effect modifier of this association (Pinteraction = 0.01). Among male KTR, higher plasma copper concentration was independently associated with a two-fold higher risk of cardiovascular mortality (HR 2.09; 95% CI, 1.42-3.07 per 1-SD, p < 0.001). Among female KTR, this association was absent. This evidence offers a rationale for considering a sex-specific assessment of copper's role in cardiovascular risk evaluation. Further studies are warranted to elucidate whether copper-targeted interventions may decrease cardiovascular mortality in male KTR.
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Affiliation(s)
- Manuela Yepes-Calderón
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Correspondence: ; Tel.: +31-061-6654-888
| | - Daan Kremer
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Adrian Post
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Camilo G. Sotomayor
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Clinical Hospital University of Chile, University of Chile, Independencia 8380453, Chile
| | - Ulrike Seidel
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Patricia Huebbe
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Tim J. Knobbe
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Kai Lüersen
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Michele F. Eisenga
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Eva Corpeleijn
- Department of Epidemiology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Martin H. De Borst
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Gerjan J. Navis
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, University of Kiel, 24118 Kiel, Germany
| | - Stephan J. L. Bakker
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
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Toro-Román V, Muñoz D, Maynar-Mariño M, Clemente-Gil S, Robles-Gil MC. Sex Differences in Copper Concentrations during a Sports Season in Soccer Players. Nutrients 2023; 15:495. [PMID: 36771202 PMCID: PMC9921014 DOI: 10.3390/nu15030495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/16/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023] Open
Abstract
Physical training produces changes in the concentrations of trace mineral elements. Sex differences in copper (Cu) concentrations in athletes are scarce. The objectives of this study were (i) to analyze changes in intracellular (erythrocytes and platelets) and extracellular (plasma and urine) Cu concentrations during a sports season in soccer players and (ii) to analyze sex differences. A total of 46 soccer players (22 men and 24 women) participated in the study. Three assessments were performed throughout the sports season. Anthropometry, body composition, nutritional intake, physical condition, female hormones (menstrual cycle) and hematology were evaluated, as well as Cu determination (plasma, urine, erythrocytes, and platelets). Regarding longitudinal differences, there were discrepancies in plasma, urine, absolute erythrocyte, and absolute platelet Cu concentrations (p < 0.05). There were differences between sexes in Cu concentrations in urine, erythrocytes relative to cell number and in platelets relative to cell number (p < 0.05). During a sports season, there are changes in Cu concentrations in soccer players. Likewise, there could be sex differences in urinary, erythrocyte and platelet Cu concentrations.
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Affiliation(s)
| | - Diego Muñoz
- School of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
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8
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More SJ, Bampidis V, Benford D, Bragard C, Halldorsson TI, Hernández‐Jerez AF, Bennekou SH, Koutsoumanis K, Lambré C, Machera K, Mullins E, Nielsen SS, Schlatter JR, Schrenk D, Turck D, Younes M, Boon P, Ferns GAA, Lindtner O, Smolders E, Wilks M, Bastaki M, de Sesmaisons‐Lecarré A, Ferreira L, Greco L, Kass GEN, Riolo F, Leblanc J. Re-evaluation of the existing health-based guidance values for copper and exposure assessment from all sources. EFSA J 2023; 21:e07728. [PMID: 36694841 PMCID: PMC9843535 DOI: 10.2903/j.efsa.2023.7728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Copper is an essential micronutrient and also a regulated product used in organic and in conventional farming pest management. Both deficiency and excessive exposure to copper can have adverse health effects. In this Scientific Opinion, the EFSA 2021 harmonised approach for establishing health-based guidance values (HBGVs) for substances that are regulated products and also nutrients was used to resolve the divergent existing HBGVs for copper. The tightly regulated homeostasis prevents toxicity manifestation in the short term, but the development of chronic copper toxicity is dependent on copper homeostasis and its tissue retention. Evidence from Wilson disease suggests that hepatic retention is indicative of potential future and possibly sudden onset of copper toxicity under conditions of continuous intake. Hence, emphasis was placed on copper retention as an early marker of potential adverse effects. The relationships between (a) chronic copper exposure and its retention in the body, particularly the liver, and (b) hepatic copper concentrations and evidence of toxicity were examined. The Scientific Committee (SC) concludes that no retention of copper is expected to occur with intake of 5 mg/day and established an Acceptable Daily Intake (ADI) of 0.07 mg/kg bw. A refined dietary exposure assessment was performed, assessing contribution from dietary and non-dietary sources. Background copper levels are a significant source of copper. The contribution of copper from its use as plant protection product (PPP), food and feed additives or fertilisers is negligible. The use of copper in fertilisers or PPPs contributes to copper accumulation in soil. Infant formula and follow-on formula are important contributors to dietary exposure of copper in infants and toddlers. Contribution from non-oral sources is negligible. Dietary exposure to total copper does not exceed the HBGV in adolescents, adults, elderly and the very elderly. Neither hepatic copper retention nor adverse effects are expected to occur from the estimated copper exposure in children due to higher nutrient requirements related to growth.
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Guo F, Lin Y, Meng L, Peng L, Zhang H, Zhang X, Jin M, Wang J, Zhang Y, Tang M, Chen K. Association of copper exposure with prevalence of chronic kidney disease in older adults. Clin Nutr 2022; 41:2720-2728. [PMID: 36368257 DOI: 10.1016/j.clnu.2022.10.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/21/2022] [Accepted: 10/20/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND & AIMS Metal exposure is suspected to be associated with the risk of chronic kidney disease (CKD). Copper (Cu) is an essential yet toxic trace element in humans. Epidemiological evidence on the association of Cu exposure with CKD remains inconsistent. This study aims to investigate the association of blood Cu and its co-exposure to other metals with CKD. METHODS A cross-sectional study was conducted among 3285 older participants in Zhejiang, China. The whole blood levels of Cu as well as other 10 metals were measured using the inductively coupled plasma mass spectrometry (ICP-MS). CKD events were defined as the presence of albuminuria or estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73 m2. Multivariable logistic regression and linear regression models were applied to assess the association of Cu with kidney function. The Bayesian kernel machine regression (BKMR) was used to examine the association of metal interactions with CKD. RESULTS In logistic models, we found a dose-dependent positive association between blood Cu and the prevalence of CKD. Compared to the lowest quartile of blood Cu, the odds ratio (OR) of CKD in the highest quartile was 1.65 (95% confidence interval, CI: 1.25, 2.17), and the β of eGFR was -1.74 (95% CI: -3.15, -0.34) after adjusting for multiple covariates. The positive linear dose-response association was found between blood Cu and the OR of CKD, and negative linear association was found between Cu and the β of eGFR. The positive association between blood Cu and CKD risk was stronger at lower level of manganese (Mn) in the BKMR model. CONCLUSION The whole blood level of Cu was remarkably associated with the risk of CKD and showed positive dose-response relationships in the older Chinese population. The toxicity of Cu on kidney function could be antagonized by the exposure of Mn. These findings shed new light on the potential role of Cu in kidney health.
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Affiliation(s)
- Fanjia Guo
- Department of Public Health, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yaoyao Lin
- Department of Public Health, Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Lin Meng
- Department of Public Health, Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Lihe Peng
- Physical and Chemical Laboratory, Center for Disease Control and Prevention, Jiashan County, Jiaxing, Zhejiang Province, 314100, China
| | - Huafang Zhang
- Department of Nursing, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China
| | - Xue Zhang
- Physical and Chemical Laboratory, Center for Disease Control and Prevention, Jiashan County, Jiaxing, Zhejiang Province, 314100, China
| | - Mingjuan Jin
- Department of Public Health, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Jianbing Wang
- Department of Public Health, National Clinical Research Center for Child Health of Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yongming Zhang
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu 322000, China.
| | - Mengling Tang
- Department of Public Health, Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China.
| | - Kun Chen
- Department of Public Health, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China.
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Tahir N, Ashraf A, Waqar SHB, Rafae A, Kantamneni L, Sheikh T, Khan R. Copper deficiency, a rare but correctable cause of pancytopenia: a review of literature. Expert Rev Hematol 2022; 15:999-1008. [PMID: 36314081 DOI: 10.1080/17474086.2022.2142113] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Copper is increasingly being recognized as a vital mineral required by both animals and humans. It plays a vital role in many metabolic processes such as cellular respiration, iron oxidation, and hemoglobin synthesis. Copper deficiency, which can be hereditary or acquired, can lead to a wide spectrum of disease processes such as ringed sideroblastic anemia, myelodysplasia, and pancytopenia. Timely identification and management of copper deficiency is necessary to prevent irreversible complications. AREAS COVERED Our study focuses on prevalence, etiology, pathophysiology, complications, and treatment of copper deficiency. EXPERT OPINION Copper deficiency is frequently underrecognized as the cause of anemia, neutropenia, and bone marrow dysplasia. As it is potentially treatable, it should always be kept in the differentials when patients present with neurological and hematological abnormalities.
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Affiliation(s)
- Nayha Tahir
- Department of Hematology and Oncology, Kaiser Permanente, San Francisco, CA, USA
| | - Aqsa Ashraf
- Department of Internal Medicine, Zucker School of Medicine, Hofstra/Northwell, Mather Hospital, Port Jefferson, NY, USA
| | - Syed Hamza Bin Waqar
- Department of Internal Medicine, State University of New York, Downstate Medical Center Brooklyn, Brooklyn, NY, USA
| | - Abdul Rafae
- Department of Hematology and Oncology, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, USA
| | - Leela Kantamneni
- Department of Internal Medicine, Huntsville Regional Medical Campus, University of Alabama, Birmingham, AL, USA
| | - Taha Sheikh
- Department of Hematology and Oncology, University of Toledo, Toledo, OH, USA
| | - Rafiullah Khan
- Division of Hematology Oncology, The Christ Hospital Network Physicians, Cincinnati, OH, USA
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11
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Tekin TO, Karis D, Ates Alkan F, Cetin G, Ercan AM. Evaluation of trace elements in essential thrombocytosis and reactive thrombocytosis. J Trace Elem Med Biol 2022; 73:127034. [PMID: 35839560 DOI: 10.1016/j.jtemb.2022.127034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 03/15/2022] [Accepted: 07/06/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Trace elements (TE) are vital for cellular mechanisms at biological, chemical and molecular levels. The effects of TE in diagnosis, progression and treatment of essential thrombocytosis (ET), which is one of the chronic myeloproliferative neoplasms is a rare clonal stem cell disease characterized by increased thrombocyte numbers with impaired function, have not been elucidated in detail yet. The aim of the present study was to investigate the effects of TE alterations in an ET model and the efficacy of TE in ET treatment protocol by means of a vast number of TE. METHODS Study groups were categorized as patients with ET diagnosis (ET group, n:30), patients with reactive thrombocytosis secondary to iron deficiency anemia (IDA-RT) (IDA-RT group, n:30) and healthy controls (HC group, n:30). Serum levels of copper (Cu), iron (Fe), cobalt (Co), chromium (Cr), aluminum (Al), silicon (Si), nickel (Ni), zinc (Zn), selenium (Se), manganese (Mn), boron (B) and magnesium (Mg) were analyzed utilizing inductively coupled plasma-optical emission spectrophotometer instrument (ICP-OES). Statistical analysis was evaluated using SPSS 23.0. RESULTS ET group had statistically higher serum levels of Co and Mg (p < 0.05), Ni and Mn (p < 0.001), and lower Si (p < 0.05) than IDA-RT group. ET group had statistically higher serum levels of Co and Mn (p < 0.05), and Ni (p < 0.001), and lower Al, Si and Se (p < 0.001) than HC group. Serum levels of Fe, Al and Se (p < 0.001), and Mg (p < 0.01), and Zn (p < 0.05) in IDA-RT group were significantly lower than HC group. CONCLUSION This novel study pointed out that alterations of many serum TE by means of both increment or decrement might have close relationship with mechanisms and complications of ET onset and follow-up. We consider that further research of TE would elucidate ethiopathogenesis and prognosis of ET. Thus, analysis of serum trace elements in essential thrombocytosis patients may be an important protocol by means of diagnosis, treatment and follow-up intervals.
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Affiliation(s)
- Tuba Ozkan Tekin
- Department of Hematology, Department of Internal Medicine, Faculty of Medicine, Bezmialem University, Fatih, Istanbul, Turkey
| | - Denizhan Karis
- Department of Biophysics, Faculty of Medicine, İstanbul University-Cerrahpasa, Fatih, Istanbul, Turkey.
| | - Fatma Ates Alkan
- Department of Biophysics, Faculty of Medicine, İstanbul University-Cerrahpasa, Fatih, Istanbul, Turkey
| | - Guven Cetin
- Department of Hematology, Department of Internal Medicine, Faculty of Medicine, Bezmialem University, Fatih, Istanbul, Turkey
| | - Alev Meltem Ercan
- Department of Biophysics, Faculty of Medicine, İstanbul University-Cerrahpasa, Fatih, Istanbul, Turkey
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12
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Thirty-Two Weeks of Oral Supplementation with LinPro® Increases Hoof Growth in Healthy Mares. J Equine Vet Sci 2022; 117:104086. [PMID: 35872234 DOI: 10.1016/j.jevs.2022.104086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/21/2022]
Abstract
LinPro® is a commercial dietary supplement marketed to increase hoof growth and quality. Ten mature (5-15 years) non-pregnant Quarter Horse mares without existing hoof quality issues were used to test the hypothesis that 32 weeks of daily supplementation with 113 g of LinPro® would increase hoof growth rates as compared to non-supplemented controls. Hooves were trimmed at the start of the study and every 8 weeks thereafter. A mark was applied on the hoof wall surface at 2.5 cm below the junction of the hoof wall and coronary band. At each trimming, the distance between the mark and coronary band was measured and a new mark placed. For front hooves, horses assigned to LP had greater total hoof growth over 32 weeks (2.65 ± 0.15 vs. 2.18 ± 0.12 cm; P = 0.048; Figure 2) and tended to have greater hoof growth per 8 week trimming cycle (0.64 ± 0.03 vs. 0.55 ± 0.03 cm; P = 0.085) than horses assigned to CON. Horses assigned to LP had greater plasma biotin concentrations (2158 ± 69 vs. 636 ± 62 ng/L; P < 0.001) and proportions of erucic acid in hoof tissue (1.03 ± 0.08 vs. 0.76 ± 0.07 %; P = 0.049) as compared to CON. Further, the most abundant fatty acids in hoof tissue were stearic, palmitic, oleic, and linoleic acids. LinPro® may provide an effective treatment to improve hoof growth rates in horses with otherwise healthy hooves.
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Baszuk P, Marciniak W, Derkacz R, Jakubowska A, Cybulski C, Gronwald J, Dębniak T, Huzarski T, Białkowska K, Pietrzak S, Muszyńska M, Kładny J, Narod SA, Lubiński J, Lener MR. Blood Copper Levels and the Occurrence of Colorectal Cancer in Poland. Biomedicines 2021; 9:biomedicines9111628. [PMID: 34829856 PMCID: PMC8615693 DOI: 10.3390/biomedicines9111628] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 01/14/2023] Open
Abstract
There is a need for sensitive and specific biomarkers for the early detection of colorectal cancer. In this retrospective study, we assessed whether a high blood copper level was associated with the presence of colorectal cancer. The blood copper level was measured among 187 colorectal cancer patients and 187 matched controls. Cases and controls were matched for sex, smoking status (yes/no) and year of birth. Among the cases, the mean blood copper level was 1031 µg/L (range 657 µg/L to 2043 µg/L) and among the controls, the mean blood copper level was 864 µg/L (range 589 µg/L to 1433 µg/L). The odds ratio for colorectal cancer for those in the highest quartile of copper level (versus the lowest) was 12.7 (95% CI: 4.98–32.3; p < 0.001). Of the patients with stage I–II colon cancer, 62% had a copper level in the highest quartile. A blood copper level in excess of 930 µg/L is associated with an increase in the prevalence of colorectal cancer in the Polish population and its potential use in early detection programs should be considered.
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Affiliation(s)
- Piotr Baszuk
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Wojciech Marciniak
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Róża Derkacz
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Anna Jakubowska
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Jacek Gronwald
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Tadeusz Dębniak
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
| | - Tomasz Huzarski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
- Department of Clinical Genetics and Pathology, University of Zielona Góra, ul. Zyty 28, 65-046 Zielona Góra, Poland
| | - Katarzyna Białkowska
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
| | - Sandra Pietrzak
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
| | - Magdalena Muszyńska
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Józef Kładny
- Department of General Surgery and Surgical Oncology, First Clinical Hospital of Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland;
| | - Steven A. Narod
- Women’s College Research Institute, Toronto, ON M5G 1N8, Canada;
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
| | - Jan Lubiński
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Read-Gene, Grzepnica, ul. Alabastrowa 8, 72-003 Grzepnica, Dobra (Szczecińska), Poland
| | - Marcin R. Lener
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University in Szczecin, ul. Unii Lubelskiej 1, 71-252 Szczecin, Poland; (P.B.); (W.M.); (R.D.); (A.J.); (C.C.); (J.G.); (T.D.); (T.H.); (K.B.); (S.P.); (M.M.); (J.L.)
- Correspondence: ; Tel.: +48-91-441-7250
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Ma J, Xie Y, Zhou Y, Wang D, Cao L, Zhou M, Wang X, Wang B, Chen W. Urinary copper, systemic inflammation, and blood lipid profiles: Wuhan-Zhuhai cohort study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115647. [PMID: 33254652 DOI: 10.1016/j.envpol.2020.115647] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 09/12/2020] [Accepted: 09/12/2020] [Indexed: 06/12/2023]
Abstract
Copper have been reported to be associated with metabolic diseases. However, results on copper exposure with blood lipid profiles are inconsistent, and the underlying mechanisms of this association remain unclear. This study focused on investigating associations between urinary copper and blood lipid profiles; and exploring the potential role of systemic inflammation in such relationships. Concentrations of urinary copper, plasma C-reactive protein (CRP), and four blood lipid parameters (e.g., Total cholesterol [TC], triglycerides [TG], low-density lipoprotein cholesterol [LDL-C], and high-density lipoprotein cholesterol [HDL-C]) were measured in the adult participants from Wuhan-Zhuhai cohort. The associations between copper, CRP, and four blood lipids were assessed by the multivariable linear regression models, and the 3D mesh graphs was used to examine the joint effects of copper exposure and CRP on four blood lipid parameters. In addition, we used mediation analysis to investigate the mediated effects of CRP in the relationships between copper exposure and blood lipid profiles. Each 1% increase in urinary copper was statistically significantly associated with a 5.32% (95% CI: 2.48%, 8.24%) increase in TG after adjusting for the confounders (P < 0.05). No significant associations were observed between urinary copper and the other three blood lipid parameters (all P > 0.05). In addition, urinary copper increased monotonically with plasma CRP elevation, which in turn, was positively associated with TC, TG, and LDL-C and negatively related to HDL-C (all P < 0.05). Results from 3D mesh graphs demonstrated that increased levels of plasma CRP with higher urinary copper corresponded to higher TC, TG, LDL-C, and lower HDL-C concentrations. Mediation analysis observed that CRP mediated 6.27% in the relationships of urinary copper and TG. These findings suggest that systemic inflammation partly mediated the association between copper exposure and abnormal blood lipid, and may contribute to the development of dyslipidemias.
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Affiliation(s)
- Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Yujia Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Yun Zhou
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Dongming Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Limin Cao
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Min Zhou
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Xing Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Bin Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
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Moon N, Aryan M, Westerveld D, Nathoo S, Glover S, Kamel AY. Clinical Manifestations of Copper Deficiency: A Case Report and Review of the Literature. Nutr Clin Pract 2020; 36:1080-1085. [PMID: 33037701 DOI: 10.1002/ncp.10582] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/05/2020] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Copper is a mineral that is absorbed in the stomach, duodenum, and jejunum. Gastric bypass surgery, gastrectomy, and short-bowel syndrome commonly lead to copper malabsorption. Copper deficiency primarily presents with hematological and neurological sequelae, including macrocytic anemia and myelopathy. Although hematological disturbances often correct with copper supplementation, neurological manifestations of copper deficiency may be irreversible. We present the case of copper deficiency secondary to malabsorption and management strategies to prevent irreversible neurological sequelae. PRESENTATION A 48-year-old female with a history of hypothyroidism, ischemic stroke, and Crohn's disease, complicated by subtotal colectomy and small-bowel resections, was admitted for fatigue and progressive neurological deficiencies. Her vital signs were stable, and physical examination was remarkable for weakness of both upper and lower extremities, ataxia, and upper extremities paresthesia. Computed tomography scan of the head without contrast was unremarkable. Magnetic resonance imaging enterography revealed a focal area of narrowing of the remaining small bowel. Copper level was low at 39 µg/dL. After 5 days of intravenous replacement using trace element within parenteral nutrition, her copper level corrected to 81 µg/dL. Her ataxia improved after intravenous copper supplementation and did not recur. CONCLUSIONS Our patient presented with copper deficiency secondary to malabsoprtion. This case highlights the importance of copper testing in the bariatric surgery population and in patients with short-bowel syndrome. Given the irreversible nature of neurological symptoms when compared with the expense of nutrition supplements, routine copper testing should be considered in patients with malabsorptive states or altered anatomy, regardless of initial presentation.
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Affiliation(s)
- Nabeel Moon
- Department of Internal Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Mahmoud Aryan
- University of Florida College of Medicine, Gainesville, Florida, USA
| | - Donevan Westerveld
- Department of Internal Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Sunina Nathoo
- Department of Internal Medicine, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Sarah Glover
- Division of Gastroenterology and Hepatology, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Amir Y Kamel
- Division of Gastroenterology and Hepatology, University of Florida College of Medicine, Gainesville, Florida, USA.,Department of Pharmacotherapy and Transitional Research, University of Florida College of Pharmacy, Gainesville, Florida, USA
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Singh NK, Kumbhar AA, Pokharel YR, Yadav PN. Anticancer potency of copper(II) complexes of thiosemicarbazones. J Inorg Biochem 2020; 210:111134. [DOI: 10.1016/j.jinorgbio.2020.111134] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/31/2020] [Accepted: 06/06/2020] [Indexed: 12/20/2022]
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17
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Johnson-Davis KL, Farnsworth C, Law C, Parker R. Method validation for a multi-element panel in serum by inductively coupled plasma mass spectrometry (ICP-MS). Clin Biochem 2020; 82:90-98. [PMID: 32407718 DOI: 10.1016/j.clinbiochem.2020.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/07/2020] [Accepted: 05/07/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Laboratory testing for trace and toxic elements is important to diagnose metal toxicity and nutritional deficiency. There are several essential elements that are necessary for biological function and non-essential elements that can pose risk from exposure. Both essential and nonessential elements can be toxic if concentrations exceed a certain threshold. METHODS An aliquot of serum was diluted in a diluent solution, which contained iridium (Ir) as the internal standard, gold (Au), 0.05% Triton X-100, and 1% nitric acid (HNO3). The diluted specimen was aspirated into an inductively coupled plasma-mass spectrometer for quantitative elemental analysis of chromium (Cr), cobalt (Co), copper (Cu), manganese (Mn), nickel (Ni), selenium (Se) and zinc (Zn). The sample was introduced into the instrument spray chamber to form aerosol droplets, then atomized and ionized in argon plasma. The ions exited the plasma, passed through the interface of the instrument, then arrived at the entrance of the collision cell where helium gas was introduced to remove polyatomic interferences by kinetic energy discrimination (KED). After exiting the collision cell, the ions were filtered by a quadrupole mass spectrometer. RESULTS The analytical measurement range was determined specifically for each element. Imprecision was <20% CV for the lowest limit of quantification for each element and accuracy was within ±15%. CONCLUSIONS This method was validated for the quantification of seven elements in serum to assess nutritional deficiency and toxicity. The multi-element panel by ICP-MS met the validation criteria for biological monitoring of trace and toxic elements in patient specimens.
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Affiliation(s)
- Kamisha L Johnson-Davis
- Department of Pathology, University of Utah Health Sciences Center, Salt Lake City, UT, United States; ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT, United States.
| | | | - Christian Law
- ARUP Laboratories, Salt Lake City, UT, United States
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18
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Gourlan AT, Douay G, Telouk P. Copper isotopes as possible neoplasia biomarkers in captive wild felids. Zoo Biol 2019; 38:371-383. [PMID: 31257640 DOI: 10.1002/zoo.21504] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 04/30/2019] [Accepted: 05/31/2019] [Indexed: 12/18/2022]
Abstract
The longevity of zoo animals is increasing due to continuous improvement in husbandry and veterinary medicine. However, increasing age is correlated to a higher prevalence of neoplasia. Despite tremendous improvement in diagnoses and monitoring capacities, cancers are still a challenge for veterinarians within the global zoo community. The recent use of copper isotopes as biomarkers for neoplasia in both human and veterinary medicine is a promising and cost-effective diagnostic tool. Two hundred and twenty-nine serum samples from 10 different species of wild felids under human care were processed through mass spectrometry to determine the ratio of heavy and light copper isotopes (65 Cu/63 Cu). The results of this preliminary study exhibit an important variability between felid species, with a ratio ranging between -1.71 and 0.63. Additionally, copper isotopes seem to be a promising diagnostic tool in monitoring cancer in wild animals, as in human medicine, where the isotopic ratio decreases significantly with time in the presence of a tumor.
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Affiliation(s)
- Alexandra T Gourlan
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre, Grenoble, France
| | - Guillaume Douay
- Conservation, Research and Veterinary Services, Wildlife Reserves Singapore, Singapore, Singapore
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19
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Park KS, Kwon JH, Park SH, Ha W, Lee J, An HC, Kim Y. Acute copper sulfate poisoning resulting from dermal absorption. Am J Ind Med 2018; 61:783-788. [PMID: 30053322 DOI: 10.1002/ajim.22892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2018] [Indexed: 11/07/2022]
Abstract
We report a Korean worker who experienced dermal exposure to a hot copper sulfate solution at his workplace and developed severe acute copper sulfate poisoning. A 53-year-old male worker, who was employed in a lead smelter for 5 years, slipped, and his right lower leg entered a copper sulfate solution, leading to severe burns of the right lower leg. Two days later, he developed severe intravascular hemolysis with methemoglobinemia. He also suffered from acute kidney injury, had an asymptomatic cerebral ischemic stroke, and melena due to multiple shallow gastric ulcers. His serum copper level was mildly elevated (153.6 μg/dL, reference: 64.0-134 μg/dL). He was transfused with red blood cell concentrate and supported by hemodialysis. After 13 sessions of hemodialysis and several blood transfusions, he completely recovered. Most previously reported incidents of severe acute copper sulfate poisoning were from accidental or suicidal oral intake. There are few previous reports of systemic copper sulfate toxicity following exposure through burned skin.
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Affiliation(s)
- Kyung Sun Park
- Department of Nephrology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Jee Hyun Kwon
- Department of Neurology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Sang Hyuk Park
- Department of Laboratory Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Won Ha
- Department of Plastic Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Jiho Lee
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Hyun Chan An
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - Yangho Kim
- Department of Occupational and Environmental Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
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20
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El-Koofy N, Fouad HM, Fahmy ME, Helmy H, Shaker O, El-Karaksy HM, Mohsen N. Copper concentrations in Egyptian infants with cholestasis: A single center study. Arab J Gastroenterol 2018. [PMID: 29523470 DOI: 10.1016/j.ajg.2018.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND STUDY AIMS Hepatobiliary cholestatic disorders produce excess copper (Cu) retention in the liver, which is toxic and may cause hepatitis, fulminant hepatic failure, cirrhosis and death. In this study, we measured hepatic Cu and tested its correlation with serum Cu (S. Cu) and serum ceruloplasmin (S. ceruloplasmin) in cholestatic infants. PATIENTS AND METHODS 41 cholestatic infants were enrolled as cases and 11 healthy infants as control subjects. S. Cu and S. ceruloplasmin were done for all infants and hepatic Cu was measured in the liver specimen in cases. RESULTS Cases were 63.5% males with their age ranging between 1 and 7 months, while control subjects were 45.5% males with an age range between 3 and 18 months. Among cases, 41.5% had biliary atresia and 58.5% had intrahepatic cholestasis. Cholestatic infants had significantly higher levels of S. Cu and S. ceruloplasmin than control subjects and their hepatic Cu concentration was significantly higher than literature control. Infants with biliary atresia showed higher levels of Cu indices, with no statistical significance. Serum and hepatic Cu levels positively correlated with each other and with S. ceruloplasmin. Results of ROC curve showed that S. Cu was highly sensitive and specific for predicting hepatic Cu concentration at cut-off 181 μg/dl. CONCLUSION Serum and hepatic Cu concentrations were markedly elevated in patients with cholestasis and positively correlated with each other and with S. ceruloplasmin. S. Cu level can predict hepatic Cu concentration.
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Affiliation(s)
- Nehal El-Koofy
- Department of Paediatrics, Cairo University, Cairo, Egypt
| | - Hanan M Fouad
- Department of Paediatrics, Hepatology and Tropical Medicine Research Institute, Cairo, Egypt.
| | - Mona E Fahmy
- Department of Paediatrics, Research Institute of Ophthalmology, Cairo, Egypt
| | - Heba Helmy
- Department of Paediatrics, Cairo University, Cairo, Egypt
| | - Olfat Shaker
- Department of Biochemistry, Cairo University, Cairo, Egypt
| | | | - Nabil Mohsen
- Department of Paediatrics, Cairo University, Cairo, Egypt
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21
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Albarede F, Télouk P, Balter V, Bondanese VP, Albalat E, Oger P, Bonaventura P, Miossec P, Fujii T. Medical applications of Cu, Zn, and S isotope effects. Metallomics 2017; 8:1056-1070. [PMID: 27513195 DOI: 10.1039/c5mt00316d] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review examines recent applications of stable copper, zinc and sulfur isotopes to medical cases and notably cancer. The distribution of the natural stable isotopes of a particular element among coexisting molecular species varies as a function of the bond strength, the ionic charge, and the coordination, and it also changes with kinetics. Ab initio calculations show that compounds in which a metal binds to oxygen- (sulfate, phosphate, lactate) and nitrogen-bearing moieties (histidine) favor heavy isotopes, whereas bonds with sulfur (cysteine, methionine) favor light isotopes. Oxidized cations (e.g., Cu(ii)) and low coordination numbers are expected to favor heavy isotopes relative to their reduced counterparts (Cu(i)) and high coordination numbers. Here we discuss the first observations of Cu, Zn, and S isotopic variations, three elements closely related along multiple biological pathways, with emphasis on serum samples of healthy volunteers and of cancer patients. It was found that heavy isotopes of Zn and to an even greater extent Cu are enriched in erythrocytes relative to serum, while the difference is small for sulfur. Isotopic variations related to age and sex are relatively small. The 65Cu/63Cu ratio in the serum of patients with colon, breast, and liver cancer is conspicuously low relative to healthy subjects. The characteristic time over which Cu isotopes may change with disease progression (a few weeks) is consistent with both the turnover time of the element and albumin half-life. A parallel effect on sulfur isotopes is detected in a few un-medicated patients. Copper in liver tumor tissue is isotopically heavy. In contrast, Zn in breast cancer tumors is isotopically lighter than in healthy breast tissue. 66Zn/64Zn is very similar in the serum of cancer patients and in controls. Possible reasons for Cu isotope variations may be related to the cytosolic storage of Cu lactate (Warburg effect), release of intracellular copper from cysteine clusters (metallothionein), or the hepatocellular and biosynthetic dysfunction of the liver. We suggest that Cu isotope metallomics will help evaluate the homeostasis of this element during patient treatment, notably by chelates and blockers of Cu trafficking, and understand the many biochemical pathways in which this element is essential.
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Affiliation(s)
- Francis Albarede
- Ecole Normale Supérieure de Lyon and CNRS UMR 5276, 69007 Lyon, France.
| | - Philippe Télouk
- Ecole Normale Supérieure de Lyon and CNRS UMR 5276, 69007 Lyon, France.
| | - Vincent Balter
- Ecole Normale Supérieure de Lyon and CNRS UMR 5276, 69007 Lyon, France.
| | | | | | - Philippe Oger
- Ecole Normale Supérieure de Lyon and CNRS UMR 5276, 69007 Lyon, France.
| | - Paola Bonaventura
- Department of Immunology and Rheumatology, Immunogenomics and inflammation EA 4130, University of Lyon, Edouard Herriot Hospital, 69437 Lyon, France
| | - Pierre Miossec
- Department of Immunology and Rheumatology, Immunogenomics and inflammation EA 4130, University of Lyon, Edouard Herriot Hospital, 69437 Lyon, France
| | - Toshiyuki Fujii
- Research Reactor Institute, Kyoto University, Osaka 590-0494, Japan
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22
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The Influence of Cigarette Smoke Exposure on the Copper Concentration in the Serum Depending on the Use of Menopausal Hormone Therapy. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5732380. [PMID: 28884126 PMCID: PMC5573097 DOI: 10.1155/2017/5732380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/26/2017] [Accepted: 07/12/2017] [Indexed: 01/17/2023]
Abstract
This study evaluated the effect of menopausal hormone therapy (MHT) on serum concentration of copper in postmenopausal women depending on passive or active exposure to tobacco smoke or lack thereof. The study included healthy postmenopausal women aged 42–69 years, who used (n = 76) or did not use (n = 76) MHT. Salivary cotinine and serum copper concentrations were determined in all the study subjects. Salivary cotinine exceeded 14 ng/ml in 14 women from the MHT group (18.5%) and in 16 controls (21.1%). Up to 41 (27%) study subjects had serum copper above the upper normal limit (1.17 mg/l). No correlation was found between salivary cotinine and serum copper in women with cotinine concentrations <14 ng/ml, and these two parameters correlated weakly in subjects with cotinine >14 ng/ml. Salivary concentration of cotinine increased with serum copper level in the MHT group, but not in the controls; smokers using MHT presented with significantly higher serum copper than nonsmokers. These findings imply that MHT does not affect serum concentration of copper in women who are not exposed to tobacco smoke. However, MHT seems to contribute to unfavorable increase in serum copper in passive and active smokers.
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23
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24
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Fedor M, Socha K, Urban B, Soroczyńska J, Matyskiela M, Borawska MH, Bakunowicz-Łazarczyk A. Serum Concentration of Zinc, Copper, Selenium, Manganese, and Cu/Zn Ratio in Children and Adolescents with Myopia. Biol Trace Elem Res 2017; 176:1-9. [PMID: 27424299 DOI: 10.1007/s12011-016-0805-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 07/06/2016] [Indexed: 11/27/2022]
Abstract
The purpose of the present study was the assessment of the serum concentration of antioxidant microelements-zinc, copper, selenium, manganese, and Cu/Zn ratio in children and adolescents with myopia. Eighty-three children were examined (mean age 14.36 ± 2.49 years) with myopia. The control group was 38 persons (mean age 12.89 ± 3.84 years). Each patient had complete eye examination. The serum concentration of zinc, copper, manganese, and selenium was determined by atomic absorption spectrometry. Cu/Zn ratio, which is the indicator of the oxidative stress, was also calculated. The average serum concentration of zinc in myopic patients was significantly lower (0.865 ± 0.221 mg L-1) in comparison to the control group (1.054 ± 0.174 mg L-1). There was significantly higher Cu/Zn ratio in myopic patients (1.196 ± 0.452) in comparison to that in the control group (0.992 ± 0.203). The average serum concentration of selenium in the study group was significantly lower (40.23 ± 12.07 μg L-1) compared with that in the control group (46.00 ± 12.25 μg L-1). There were no essential differences between serum concentration of copper and manganese in the study group and the control group. Low serum concentration of zinc and selenium in myopic children may imply an association between insufficiency of these antioxidant microelements and the development of the myopia and could be the indication for zinc and selenium supplementation in the prevention of myopia. Significantly, higher Cu/Zn ratio in the study group can suggest the relationship between myopia and oxidative stress.
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Affiliation(s)
- Monika Fedor
- Department of Pediatric Ophthalmology and Strabismus, The Medical University of Bialystok Children's Clinical Hospital, Waszyngtona 17, 15-274, Bialystok, Poland.
| | - Katarzyna Socha
- Department of Bromatology, Medical University of Bialystok, Mickiewicza 2D, 15-222, Białystok, Poland
| | - Beata Urban
- Department of Pediatric Ophthalmology and Strabismus, Medical University of Bialystok, Waszyngtona 17, 15-274, Bialystok, Poland
| | - Jolanta Soroczyńska
- Department of Bromatology, Medical University of Bialystok, Mickiewicza 2D, 15-222, Białystok, Poland
| | - Monika Matyskiela
- Department of Pediatric Ophthalmology and Strabismus, The Medical University of Bialystok Children's Clinical Hospital, Waszyngtona 17, 15-274, Bialystok, Poland
| | - Maria H Borawska
- Department of Bromatology, Medical University of Bialystok, Mickiewicza 2D, 15-222, Białystok, Poland
| | - Alina Bakunowicz-Łazarczyk
- Department of Pediatric Ophthalmology and Strabismus, Medical University of Bialystok, Waszyngtona 17, 15-274, Bialystok, Poland
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25
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Shahidi-Dadras M, Namazi N, Younespour S. Comparative Analysis of Serum Copper, Iron, Ceruloplasmin, and Transferrin Levels in Mild and Severe Psoriasis Vulgaris in Iranian Patients. Indian Dermatol Online J 2017; 8:250-253. [PMID: 28761840 PMCID: PMC5518575 DOI: 10.4103/idoj.idoj_230_16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND There is a great body of evidence indicating that some inflammatory skin diseases, such as psoriasis, are mediated by oxidative stress. Trace metals have been shown to be involved in oxidative stress response. Altered trace metal homeostasis in psoriasis has been studied. However, limited number of studies has focused on the involvement of metal binding proteins in psoriasis. MATERIALS AND METHODS In a case control-study, serum levels of Iron (Fe), Copper (Cu), Transferrin (Trf), and Ceruloplasmin (Cp) were measured in 40 psoriasis patients and matched healthy controls. The severity of the disease was measured using psoriasis area and severity index (PASI), and the association of severity based on PASI score and measured elements and proteins was investigated. RESULTS Forty patients with psoriasis (mild: 14 and moderate to severe: 26) and 40 healthy controls were included in this study. The serum Fe, Trf, and Cu/Cp levels of the patients with psoriasis were statistically lower compared with those of the controls; serum levels of Cp was elevated in patients with psoriasis compared to controls (P = 0.02). No significant difference was observed between the two groups regarding serum levels of Cu (P = 0.07). CONCLUSION Cu/Cp ratio of the patients with psoriasis was statistically lower compared with those of the controls.
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Affiliation(s)
| | - Nastaran Namazi
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shima Younespour
- Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
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26
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El Ati-Hellal M, Doggui R, Hedhili A, Traissac P, El Ati J. Zinc and copper status in childbearing age Tunisian women: Relation to age, residential area, socioeconomic situation and physiologic characteristics. CHEMOSPHERE 2016; 149:231-237. [PMID: 26859607 DOI: 10.1016/j.chemosphere.2016.01.100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/17/2016] [Accepted: 01/24/2016] [Indexed: 06/05/2023]
Abstract
Plasma zinc and copper status of 1689 non pregnant Tunisian women, aged 20-49 years old, was determined by flame atomic absorption spectrometry. A multiple regression was run to predict plasma trace element concentrations from age, BMI, marital status, menopause, education level, professional activity, economic level and area of living. The mean zinc and copper values were similar to those measured among comparable populations in earlier studies. However, a high prevalence of low plasma zinc and copper concentrations was observed assuming that women at childbearing age are at high risk of zinc and copper deficiencies and specific intervention may be considered. In univariate analysis, the mean values of plasma zinc and copper were associated with sitting areas and professional activity. For only plasma copper levels, there was an increase with BMI and parity, and a decrease with increasing schooling level and economic score. After adjustment for all variables, profession and parity showed a significant relationship between plasma levels copper.
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Affiliation(s)
- Myriam El Ati-Hellal
- Laboratoire de Toxicologie, Unité de Toxicologie Recherche et Environnement, 10, rue Abou El Kacem Chabbi, Montfleury, 1008 Tunis Cedex, Tunisia.
| | - Radhouene Doggui
- Laboratoire de Surveillance et Epidémiologie nutritionnelles en Tunisie (SURVEN), Institut National de nutrition et de Technologie Alimentaire, 11 Rue Jebel Lakhdar, 1007 Bab Saadoun, Tunis, Tunisia
| | - Abderrazek Hedhili
- Laboratoire de Toxicologie, Unité de Toxicologie Recherche et Environnement, 10, rue Abou El Kacem Chabbi, Montfleury, 1008 Tunis Cedex, Tunisia
| | - Pierre Traissac
- IRD (Institut de Recherche pour le Développement), NUTRIPASS Unit, IRD-UM-SupAgro, Montpellier, France
| | - Jalila El Ati
- Laboratoire de Surveillance et Epidémiologie nutritionnelles en Tunisie (SURVEN), Institut National de nutrition et de Technologie Alimentaire, 11 Rue Jebel Lakhdar, 1007 Bab Saadoun, Tunis, Tunisia
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27
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Effect of 6-month caloric restriction on Cu bound to ceruloplasmin in adult overweight subjects. J Nutr Biochem 2015; 26:876-82. [PMID: 26001545 DOI: 10.1016/j.jnutbio.2015.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 03/25/2015] [Accepted: 03/31/2015] [Indexed: 12/30/2022]
Abstract
In a randomized clinical trial of calorie restriction (CR), we demonstrated that important cardiovascular disease (CVD) biomarkers were favorably influenced by CR alone and in conjunction with physical exercise. The aim of this study was to examine the effects of CR with or without exercise on copper bound to ceruloplasmin (CuCp), a well-known biomarker for CVD, in overweight men and women enrolled in the CALERIE phase 1 study. Forty-six individuals were randomized to one of four groups for 6 months: control, healthy weight maintenance; CR, 25% CR from baseline energy requirements; CR+exercise, 12.5% CR and 12.5% through aerobic exercise; and low-calorie diet, low-calorie diet until 15% reduction in body weight followed by weight maintenance diet. CuCp was determined in fasting blood samples by a high-performance liquid chromatography-inductively coupled plasma mass spectrometry methodology and compared with changes in body composition and markers of CVD. After 6 months, CR combined with exercise induced a decrease in plasma concentration of CuCp. CuCp was inversely correlated with insulin sensitivity at baseline and after 6 months of intervention. A cluster analysis showed that the percent change of weight after 6 months of intervention was the most important variable that could discriminate the intervention groups. The percent change of CuCp was the only other variable selected by the analysis. Decreased CuCp in overweight subjects by CR combined with exercise suggests a positive effect of this intervention on metabolic health. Further studies to explain the relationship between weight loss and CuCp and its relevance for cardiovascular health are needed.
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28
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Dudakova L, Liskova P, Jirsova K. Is copper imbalance an environmental factor influencing keratoconus development? Med Hypotheses 2015; 84:518-24. [PMID: 25758858 DOI: 10.1016/j.mehy.2015.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/25/2015] [Indexed: 12/15/2022]
Affiliation(s)
- L Dudakova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - P Liskova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic; Department of Ophthalmology, General Teaching Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - K Jirsova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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29
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Télouk P, Puisieux A, Fujii T, Balter V, Bondanese VP, Morel AP, Clapisson G, Lamboux A, Albarede F. Copper isotope effect in serum of cancer patients. A pilot study. Metallomics 2015; 7:299-308. [DOI: 10.1039/c4mt00269e] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Lower65Cu/63Cu ratios in the serum of colorectal and breast cancer patients relative to healthy individuals have potential diagnostic value.
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Affiliation(s)
- Philippe Télouk
- Ecole Normale Supérieure de Lyon
- CNRS and Université Claude Bernard Lyon 1
- Lyon, France
| | - Alain Puisieux
- Centre Léon Bérard and Université Claude Bernard Lyon 1
- Lyon, France
| | - Toshiyuki Fujii
- Research Reactor Institute
- Kyoto University
- Osaka 590-0494, Japan
| | - Vincent Balter
- Ecole Normale Supérieure de Lyon
- CNRS and Université Claude Bernard Lyon 1
- Lyon, France
| | - Victor P. Bondanese
- Ecole Normale Supérieure de Lyon
- CNRS and Université Claude Bernard Lyon 1
- Lyon, France
| | | | - Gilles Clapisson
- Centre Léon Bérard and Université Claude Bernard Lyon 1
- Lyon, France
| | - Aline Lamboux
- Ecole Normale Supérieure de Lyon
- CNRS and Université Claude Bernard Lyon 1
- Lyon, France
| | - Francis Albarede
- Ecole Normale Supérieure de Lyon
- CNRS and Université Claude Bernard Lyon 1
- Lyon, France
- Department of Earth Sciences
- Houston, USA
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30
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Mocchegiani E, Costarelli L, Giacconi R, Malavolta M, Basso A, Piacenza F, Ostan R, Cevenini E, Gonos ES, Monti D. Micronutrient-gene interactions related to inflammatory/immune response and antioxidant activity in ageing and inflammation. A systematic review. Mech Ageing Dev 2014; 136-137:29-49. [PMID: 24388876 DOI: 10.1016/j.mad.2013.12.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 12/06/2013] [Accepted: 12/20/2013] [Indexed: 02/07/2023]
Abstract
Recent longitudinal studies in dietary daily intake in human centenarians have shown that a satisfactory content of some micronutrients within the cells maintain several immune functions, a low grade of inflammation and preserve antioxidant activity. Micronutrients (zinc, copper, selenium) play a pivotal role in maintaining and reinforcing the performances of the immune and antioxidant systems as well as in affecting the complex network of the genes (nutrigenomic) with anti- and pro-inflammatory tasks. Genes of pro- and anti-inflammatory cytokines and some key regulators of trace elements homeostasis, such as Metallothioneins (MT), are involved in the susceptibility to major geriatric disease/disorders. Moreover, the genetic inter-individual variability may affect the nutrients' absorption (nutrigenetic) with altered effects on inflammatory/immune response and antioxidant activity. The interaction between genetic factors and micronutrients (nutrigenomic and nutrigenetic approaches) may influence ageing and longevity because the micronutrients may become also toxic. This review reports the micronutrient-gene interactions in ageing and their impact on the healthy state with a focus on the method of protein-metal speciation analysis. The association between micronutrient-gene interactions and the protein-metal speciation analysis can give a complete picture for a personalized nutrient supplementation or chelation in order to reach healthy ageing and longevity.
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Affiliation(s)
- Eugenio Mocchegiani
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy.
| | - Laura Costarelli
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy
| | - Robertina Giacconi
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy
| | - Marco Malavolta
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy
| | - Andrea Basso
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy
| | - Francesco Piacenza
- Translation Center of Research in Nutrition and Ageing, Scientific and Technological Pole, Italian National Research Centres on Ageing (INRCA), Via Birarelli 8, 60121 Ancona, Italy
| | - Rita Ostan
- Department of Experimental Diagnostic and Specialty Medicine (DIMES) and Interdepartmental Centre "L. Galvani" (CIG), University of Bologna, Via San Giacomo, 12, 40126 Bologna, Italy
| | - Elisa Cevenini
- Department of Experimental Diagnostic and Specialty Medicine (DIMES) and Interdepartmental Centre "L. Galvani" (CIG), University of Bologna, Via San Giacomo, 12, 40126 Bologna, Italy
| | - Efstathios S Gonos
- National Hellenic Research Foundation, Institute of Biology, Medicinal Chemistry and Biotechnology, 48 Vas. Constantinou Ave., Athens 11635, Greece
| | - Daniela Monti
- Department of Clinical and Experimental Biomedical Sciences, University of Florence, Viale Morgagni, 50, 50134 Florence, Italy
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Arredondo M, Weisstaub G, Medina M, Suazo M, Guzmán M, Araya M. Assessing chaperone for Zn, Cu-superoxide dismutase as an indicator of copper deficiency in malnourished children. J Trace Elem Med Biol 2014; 28:23-7. [PMID: 24262105 DOI: 10.1016/j.jtemb.2013.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/15/2013] [Accepted: 10/18/2013] [Indexed: 10/26/2022]
Abstract
UNLABELLED It is not clear how frequent is copper deficiency in humans. Current copper markers are not sensitive enough to detect early copper deficiency and new markers are needed. CCS is a candidate to become a copper biomarker. OBJECTIVE Measuring CCS mRNA relative expression in malnourished children and compare results (a) with those of the same children after nutritional recovery and (b) with well-nourished children. METHOD On admission to the protocol and after 15 day nutritional treatment, severely (G1=18) and moderately (G2=10) malnourished children were compared with well-nourished healthy controls (G3=15), measuring anthropometric indicators, blood biochemistry, Cu, Fe and Zn serum concentrations, ceruloplasmin, C Reactive protein and mRNA abundance of CCS, SOD and MT2 in peripheral mononuclear cells. RESULT In malnourished groups, mean serum copper concentration was below the cut-off on admission to hospital and increased after 15 days (t-test, p<0.01). On admission to protocol, CCS mRNA abundance in G1 and G2 was higher than in G3 (one way ANOVA, p<0.001). After 15 days, CCS expression decreased as expected (t-test, p<0.001). Initial SOD mRNA relative abundance was higher in study groups than controls and also between G1 and G2 (One way ANOVA, both p<0.01); after 15 days, G1 and G2 were not different (t-test, NS). MT2A abundance of transcripts did not follow a clear change pattern. CONCLUSION CCS mRNA abundance responded as expected, being higher in malnourished children than in controls; nutritional recovery in these latter resulted in decreasing expression of the chaperone, supporting the hypothesis that CCS may be a copper biomarker.
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Affiliation(s)
- Miguel Arredondo
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Gerardo Weisstaub
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | | | - Miriam Suazo
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | | | - Magdalena Araya
- Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile.
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Pal A. Copper toxicity induced hepatocerebral and neurodegenerative diseases: an urgent need for prognostic biomarkers. Neurotoxicology 2013; 40:97-101. [PMID: 24342654 DOI: 10.1016/j.neuro.2013.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 12/04/2013] [Indexed: 02/04/2023]
Abstract
Copper (Cu) has been the subject of intensive research over several decades as numerous evidence robustly support the involvement of excess Cu induced neurotoxicity in hepatocerebral (Wilson's disease) and neurodegenerative disorders (especially Alzheimer's disease and Parkinson's disease); notwithstanding, the ideal Cu neurotoxicity biomarker/s for early prognosis remains elusive. Non-ceruloplasmin bound Cu is a biological marker of Wilson's disease and recent studies have shown that its levels are also increased in Alzheimer's disease. Copper chaperone for superoxide dismutase seems to be the other most promising biomarker of Cu toxicity (subject to its validation). Serum/plasma Cu, urine Cu and ceruloplasmin concentrations, most widely used laboratory indicators to diagnose Wilson's disease, are not specific for Cu excess milieu as these are also influenced by age, sex, inflammation and hormonal status. High inter-individual variability, nonexistence of standardized assays and non-specificity limit the use of other cuproenzymes as biomarkers of Cu neurotoxicity. The majority of Cu neurotoxicity biomarker research has focused in plasma/serum where other factors including inflammation, oxidative stress, dietary and environmental factors influence the Cu condition being studied. Proteomics study of cerebrospinal fluid, due to its high specificity and sensitivity represents an alternative approach to study early peripheral Cu neurotoxicity biomarker/s in experimental animals. In addition, network biology, transcriptomics in conjunction with novel in vivo Cu imaging techniques allow us to explore other potential candidates and propose new targets to be studied for chronic Cu neurotoxicity biomarker/s, and for possible therapeutic interventions.
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Affiliation(s)
- Amit Pal
- Department of Biochemistry, PGIMER, Chandigarh, India.
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Santini C, Pellei M, Gandin V, Porchia M, Tisato F, Marzano C. Advances in Copper Complexes as Anticancer Agents. Chem Rev 2013; 114:815-62. [DOI: 10.1021/cr400135x] [Citation(s) in RCA: 1128] [Impact Index Per Article: 102.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carlo Santini
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Maura Pellei
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Valentina Gandin
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
| | | | | | - Cristina Marzano
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
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34
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Scientific Opinion on nutrient requirements and dietary intakes of infants and young children in the European Union. EFSA J 2013. [DOI: 10.2903/j.efsa.2013.3408] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Lin J, Zahurak M, Beer TM, Ryan CJ, Wilding G, Mathew P, Morris M, Callahan JA, Gordon G, Reich SD, Carducci MA, Antonarakis ES. A non-comparative randomized phase II study of 2 doses of ATN-224, a copper/zinc superoxide dismutase inhibitor, in patients with biochemically recurrent hormone-naïve prostate cancer. Urol Oncol 2013; 31:581-8. [PMID: 21816640 PMCID: PMC3227793 DOI: 10.1016/j.urolonc.2011.04.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 04/20/2011] [Accepted: 04/23/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE ATN-224 (choline tetrathiomolybdate) is an oral Cu(2+)/Zn(2+)-superoxide dismutase 1 (SOD1) inhibitor with preclinical antitumor activity. We hypothesized that ATN-224 may induce antitumor effects as an antiangiogenic agent at low dose-levels while possessing direct antitumor activity at higher dose-levels. The objective of this study was to screen its clinical activity in patients with biochemically recurrent hormone-naïve prostate cancer. METHODS Biochemically-recurrent prostate cancer patients with prostate specific antigen doubling times (PSADT) < 12 months, no radiographic evidence of metastasis, and no hormonal therapy within 6 months (with serum testosterone levels > 150 ng/dl) were eligible. ATN-224 was administered at 2 dose-levels, 300 mg (n = 23) or 30 mg (n = 24) daily, by way of randomization. PSA progression was defined as a ≥ 50% increase (and >5 ng/ml) in PSA from baseline or post-treatment nadir. Endpoints included the proportion of patients who were free of PSA progression at 24 weeks, changes in PSA slope/PSADT, and safety. The study was not powered to detect differences between the 2 treatment groups. RESULTS At 24 weeks, 59% (95% CI 33%-82%) of men in the low-dose arm and 45% (95% CI 17%-77%) in the high-dose arm were PSA progression-free. Median PSA progression-free survival was 30 weeks (95% CI 21-40(+)) and 26 weeks (95% CI 24-39(+)) in the low-dose and high-dose groups, respectively. Pre- and on-treatment PSA kinetics analyses showed a significant mean PSA slope decrease (P = 0.006) and a significant mean PSADT increase (P = 0.032) in the low-dose arm only. Serum ceruloplasmin levels, a biomarker for ATN-224 activity, were lowered in the high-dose group, but did not correlate with PSA changes. CONCLUSIONS Low-dose ATN-224 (30 mg daily) may have biologic activity in men with biochemically-recurrent prostate cancer, as suggested by an improvement in PSA kinetics. However, the clinical significance of PSA kinetics changes in this patient population remains uncertain. The absence of a dose-response effect also reduces enthusiasm, and there are currently no plans to further develop this agent in prostate cancer.
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Affiliation(s)
- Jianqing Lin
- Johns Hopkins University, Baltimore, MD 21231, USA
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36
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Johnston AN, Center SA, McDonough SP, Wakshlag JJ, Warner KL. Hepatic copper concentrations in Labrador Retrievers with and without chronic hepatitis: 72 cases (1980-2010). J Am Vet Med Assoc 2013; 242:372-80. [PMID: 23327181 DOI: 10.2460/javma.242.3.372] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate differences in hepatic copper concentrations in Labrador Retrievers with and without chronic hepatitis. DESIGN etrospective case-control study. SAMPLE Liver tissue specimens from 36 Labrador Retrievers with chronic hepatitis and 36 age- and sex-matched Labrador Retrievers without chronic hepatitis (control dogs). PROCEDURES Liver tissue specimens were obtained during 2 study periods (1980 to 1997 and 1998 to 2010). For each tissue specimen, a histologic score was assigned independently by each of 2 interpreters, and the hepatic copper concentration was qualitatively determined via rhodanine staining and quantitatively determined via atomic absorption spectroscopy. RESULTS Mean hepatic copper concentration was significantly higher in dogs with chronic hepatitis (614 μg/g of dry weight [range, 104 to 4,234 μg/g of dry weight]), compared with that in control dogs (299 μg/g of dry weight [range, 93 to 3,810 μg/g of dry weight]), and increased significantly over time. A higher proportion of liver tissue specimens collected during the 1998-2010 study period had hepatic copper concentrations > 400 μg/g of dry weight (the upper limit of the reference range), compared with the proportion of liver tissue specimens collected during the 1980-1997 study period. The qualitative copper score did not accurately predict quantitative hepatic copper concentration in 33% of study dogs. CONCLUSIONS AND CLINICAL RELEVANCE Results suggested that the increase in hepatic copper concentrations in Labrador Retrievers with and without chronic hepatitis over time may be the result of increased exposure of dogs to environmental copper, most likely via the diet.
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Affiliation(s)
- Andrea N Johnston
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
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Copper and anesthesia: clinical relevance and management of copper related disorders. Anesthesiol Res Pract 2013; 2013:750901. [PMID: 23762044 PMCID: PMC3666360 DOI: 10.1155/2013/750901] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/16/2013] [Indexed: 01/10/2023] Open
Abstract
Recent research has implicated abnormal copper homeostasis in the underlying pathophysiology of several clinically important disorders, some of which may be encountered by the anesthetist in daily clinical practice. The purpose of this narrative review is to summarize the physiology and pharmacology of copper, the clinical implications of abnormal copper metabolism, and the subsequent influence of altered copper homeostasis on anesthetic management.
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Pramyothin P, Kim DW, Young LS, Wichansawakun S, Apovian CM. Anemia and Leukopenia in a Long-Term Parenteral Nutrition Patient During a Shortage of Parenteral Trace Element Products in the United States. JPEN J Parenter Enteral Nutr 2012; 37:425-9. [DOI: 10.1177/0148607112463942] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Pornpoj Pramyothin
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
- The Department of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Dong Wook Kim
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Lorraine S. Young
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Sanit Wichansawakun
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
- The Department of Medicine, Thammasat University, Bangkok, Thailand
| | - Caroline M. Apovian
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
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39
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Blackmer AB, Bailey E. Management of Copper Deficiency in Cholestatic Infants. Nutr Clin Pract 2012; 28:75-86. [DOI: 10.1177/0884533612461531] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Allison Beck Blackmer
- Department of Pharmacy Services/College of Pharmacy, University of Michigan, Ann Arbor
| | - Elizabeth Bailey
- Patient Food and Nutrition Services, University of Michigan, Ann Arbor
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Bui VQ, Stein AD, DiGirolamo AM, Ramakrishnan U, Flores-Ayala RC, Ramirez-Zea M, Grant FK, Villalpando S, Martorell R. Associations between serum C-reactive protein and serum zinc, ferritin, and copper in Guatemalan school children. Biol Trace Elem Res 2012; 148:154-60. [PMID: 22354676 PMCID: PMC3734531 DOI: 10.1007/s12011-012-9358-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 02/07/2012] [Indexed: 10/28/2022]
Abstract
Inflammation affects trace nutrient concentrations, but research on copper and particularly in children is limited. We assessed associations between serum C-reactive protein (CRP) and zinc, iron, copper, and other biomarkers (alkaline phosphatase, hemoglobin, and albumin), in 634 healthy 6- to 11-year-old Guatemalan schoolchildren. CRP was measured by a standardized, high-sensitive method. For significant associations with CRP, we stratified nutrient concentrations across categories of CRP and compared concentrations above and below several CRP cutoff points (0.5, 1, 3, 5, and 10 mg/L), and then adjusted values using correction factors (ratios of geometric means of the nutrients in the low and high groups). Prevalence of serum zinc (<65 μg/dL0, ferritin (<15 μg/L), and copper (<90 μg/dL) deficiency were 21%, 2.1%, and 23.8%, respectively. Median (25th and 75th percentiles) CRP was 0.56 (0.26 and 1.54) mg/L. CRP concentration was positively associated with ferritin and copper concentrations (r = 0.23 and 0.29, respectively; P < 0.0001) but not with zinc and other biomarkers (P > 0.05). Regardless of CRP cutoffs, high (> cutoff) vs. low (≤ cutoff) CRP levels had higher ferritin and copper concentrations and lower prevalence of copper deficiency of <90 μg/dL (P < 0.05). Adjustment for inflammation had the greatest influence on recalculated prevalence for the CRP 0.5 mg/L cutoff. The low ferritin prevalence hardly changed (from 2.1% to 2.5%) while the low copper prevalence changed appreciably (from 23.8% to 31.2%). In conclusion, CRP was positively associated with ferritin and copper but not with zinc concentrations. Adjustment for inflammation had little effect on low ferritin prevalence, low to begin with, and a large impact on low copper prevalence. High-sensitive CRP methods and the use of very low CRP cutoffs may be more accurate than traditional CRP methods in the adjustment of serum copper concentrations for inflammation in healthy school children.
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Affiliation(s)
- Vinh Q. Bui
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA
| | - Aryeh D. Stein
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Ann M. DiGirolamo
- Health Unit, Program Quality and Impact Division, CARE USA, Atlanta, GA, USA
| | - Usha Ramakrishnan
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Rafael C. Flores-Ayala
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Manuel Ramirez-Zea
- Institute of Nutrition of Central America and Panama (INCAP), Guatemala City, Guatemala
| | - Frederick K. Grant
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | | | - Reynaldo Martorell
- Nutrition and Health Sciences Program, Graduate Division of Biological and Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA, USA. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Micronutrient (Zn, Cu, Fe)-gene interactions in ageing and inflammatory age-related diseases: implications for treatments. Ageing Res Rev 2012; 11:297-319. [PMID: 22322094 DOI: 10.1016/j.arr.2012.01.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 01/20/2012] [Accepted: 01/23/2012] [Indexed: 02/07/2023]
Abstract
In ageing, alterations in inflammatory/immune response and antioxidant capacity lead to increased susceptibility to diseases and loss of mobility and agility. Various essential micronutrients in the diet are involved in age-altered biological functions. Micronutrients (zinc, copper, iron) play a pivotal role either in maintaining and reinforcing the immune and antioxidant performances or in affecting the complex network of genes (nutrigenomic approach) involved in encoding proteins for a correct inflammatory/immune response. By the other side, the genetic inter-individual variability may affect the absorption and uptake of the micronutrients (nutrigenetic approach) with subsequent altered effects on inflammatory/immune response and antioxidant activity. Therefore, the individual micronutrient-gene interactions are fundamental to achieve healthy ageing. In this review, we report and discuss the role of micronutrients (Zn, Cu, Fe)-gene interactions in relation to the inflammatory status and the possibility of a supplement in the event of a micronutrient deficiency or chelation in presence of micronutrient overload in relation to specific polymorphisms of inflammatory proteins or proteins related of the delivery of the micronutriemts to various organs and tissues. In this last context, we report the protein-metal speciation analysis in order to have, coupled with micronutrient-gene interactions, a more complete picture of the individual need in micronutrient supplementation or chelation to achieve healthy ageing and longevity.
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Song Z, Zhao T, Liu L, Jiao H, Lin H. Effect of copper on antioxidant ability and nutrient metabolism in broiler chickens stimulated by lipopolysaccharides. Arch Anim Nutr 2012; 65:366-75. [PMID: 22164958 DOI: 10.1080/1745039x.2011.609753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The aim of the experiment was to investigate the interaction between Cu intake, inflammatory challenge and oxidative stress in broiler chickens. Furthermore, it was tested whether plasma ceruloplasmin (Cp) could be a sensible parameter for dietary Cu. One hundred forty-four day old chickens were raised on a basal control diet without added copper (Group Cu-6.5, basal Cu content 6.5 mg/kg diet) or a diet supplemented with Cu at 8 or 50 mg/kg (Groups Cu-14.5 and Cu-56.5, respectively) with four replicates of 12 animals for each treatment. Starting on day 21, chickens were injected intraperitoneally with lipopolysaccharides (LPS) once a day for 3 days. Before this challenge, Group Cu-14.5 had the lowest gain and the feed to gain ratio was the highest. After injection of LPS, however, chickens of Group Cu-14.5 had the best zoo-technical performance. For chickens of Group Cu-6.5, LPS injection resulted in elevated rectal temperature, and lower erythrocyte superoxide dismutase (CuZn-SOD) activity, compared with the other groups. LPS injection increased plasma uric acid in Group Cu-6.5 significantly, but was without influence in Group Cu-56.5. At all Cu-levels, LPS injection increased erythrocyte CuZn-SOD activity and decreased thiobarbituric acid reacting substances. No significant difference in plasma Cp was found in chickens fed different dietary Cu. LPS injection significantly increased plasma Cp in Group Cu-56.5. The results suggest that varying dietary Cu levels seem to modulate the parameters involved in immunological responses and oxidant stress and that plasma Cp is not a reliable parameter for dietary Cu.
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Affiliation(s)
- Zhigang Song
- Department of Animal Science, Shandong Agricultural University, Taian, Shandong, P.R. China
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Lampon N, Tutor JC. A preliminary investigation on the possible association between diminished copper availability and non-alcoholic fatty liver disease in epileptic patients treated with valproic acid. Ups J Med Sci 2011; 116:148-54. [PMID: 21190397 PMCID: PMC3078546 DOI: 10.3109/03009734.2010.545898] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Patients treated with valproic acid (VPA) present a high incidence of non-alcoholic fatty liver disease (NAFLD) (around 61%). Several recent studies suggest that low copper stores could be associated with NAFLD, and a significant decrease of copper availability in VPA-treated patients has been described. DESIGN AND METHODS In 101 adult epileptic patients treated with valproic acid in monotherapy (n = 75) and polytherapy (n = 26) the copper availability was evaluated using the specific oxidase activity of ceruloplasmin (activity per unit mass of enzyme protein) and the copper/ceruloplasmin ratio. Copper deficiency was supposed in the cases in which this biochemical variable was smaller than the lower reference limit (333 U/g). RESULTS The differences between the groups of patients with ceruloplasmin oxidase activity smaller or greater than 333 U/g for the serum levels of aminotransferases, gamma-glutamyltransferase, butyrylcholinesterase, cholesterol, triglycerides, and C-reactive protein, and the APRI and FIB-4 liver fibrosis scores were not statistically significant. Most patients (93%) had low APRI and FIB-4 scores, suggesting absence of significant liver fibrosis. CONCLUSIONS The results obtained do not confirm the hypothesis of an association between diminished copper availability and NAFLD in patients treated with valproic acid.
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Affiliation(s)
- Natalia Lampon
- Unidad Monitorización Fármacos, Laboratorio Central, Hospital Clínico Universitario, Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain
| | - J. Carlos Tutor
- Unidad Monitorización Fármacos, Laboratorio Central, Hospital Clínico Universitario, Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain
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Albarède F, Telouk P, Lamboux A, Jaouen K, Balter V. Isotopic evidence of unaccounted for Fe and Cu erythropoietic pathways. Metallomics 2011; 3:926-33. [DOI: 10.1039/c1mt00025j] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Chambers A, Krewski D, Birkett N, Plunkett L, Hertzberg R, Danzeisen R, Aggett PJ, Starr TB, Baker S, Dourson M, Jones P, Keen CL, Meek B, Schoeny R, Slob W. An exposure-response curve for copper excess and deficiency. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2010; 13:546-578. [PMID: 21170809 DOI: 10.1080/10937404.2010.538657] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
There is a need to define exposure-response curves for both Cu excess and deficiency to assist in determining the acceptable range of oral intake. A comprehensive database has been developed where different health outcomes from elevated and deficient Cu intakes were assigned ordinal severity scores to create common measures of response. A generalized linear model for ordinal data was used to estimate the probability of response associated with dose, duration and severity. The model can account for differences in animal species, the exposure medium (drinking water and feed), age, sex, and solubility. Using this model, an optimal intake level of 2.6 mg Cu/d was determined. This value is higher than the current U.S. recommended dietary intake (RDI; 0.9 mg/d) that protects against toxicity from Cu deficiency. It is also lower than the current tolerable upper intake level (UL; 10 mg/d) that protects against toxicity from Cu excess. Compared to traditional risk assessment approaches, categorical regression can provide risk managers with more information, including a range of intake levels associated with different levels of severity and probability of response. To weigh the relative harms of deficiency and excess, it is important that the results be interpreted along with the available information on the nature of the responses that were assigned to each severity score.
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Affiliation(s)
- Andrea Chambers
- Institute of Population Health, McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Ontario, Canada.
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Tisato F, Marzano C, Porchia M, Pellei M, Santini C. Copper in diseases and treatments, and copper-based anticancer strategies. Med Res Rev 2010; 30:708-49. [PMID: 19626597 DOI: 10.1002/med.20174] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Copper is found in all living organisms and is a crucial trace element in redox chemistry, growth and development. It is important for the function of several enzymes and proteins involved in energy metabolism, respiration, and DNA synthesis, notably cytochrome oxidase, superoxide dismutase, ascorbate oxidase, and tyrosinase. The major functions of copper-biological molecules involve oxidation-reduction reactions in which they react directly with molecular oxygen to produce free radicals. Therefore, copper requires tightly regulated homeostatic mechanisms to ensure adequate supplies without any toxic effects. Overload or deficiency of copper is associated, respectively, with Wilson disease (WD) and Menkes disease (MD), which are of genetic origin. Researches on Menkes and Wilson disorders have provided useful insights in the field of copper homeostasis and in particular into the understanding of intracellular trafficking and distribution of copper at molecular levels. Therapies based on metal supplementation with copper histidine or removal of copper excess by means of specific copper chelators are currently effective in treating MD and WD, respectively. Copper chelation therapy is now attracting much attention for the investigation and treatment of various neurodegenerative disorders such as Alzheimer, Parkinson and CreutzfeldtJakob. An excess of copper appears to be an essential co-factor for angiogenesis. Moreover, elevated levels of copper have been found in many types of human cancers, including prostate, breast, colon, lung, and brain. On these basis, the employment of copper chelators has been reported to be of therapeutic value in the treatment of several types of cancers as anti-angiogenic molecules. More recently, mixtures of copper chelators with copper salts have been found to act as efficient proteasome inhibitors and apoptosis inducers, specifically in cancer cells. Moreover, following the worldwide success of platinum(II) compounds in cancer chemotherapy, several families of individual copper complexes have been studied as potential antitumor agents. These investigations, revealing the occurrence of mechanisms of action quite different from platinum drugs, head toward the development of new anticancer metallodrugs with improved specificity and decreased toxic side effects.
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Effect of valproic acid treatment on copper availability in adult epileptic patients. Clin Biochem 2010; 43:1074-8. [DOI: 10.1016/j.clinbiochem.2010.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 05/28/2010] [Accepted: 06/22/2010] [Indexed: 02/01/2023]
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New hypotheses for the health-protective mechanisms of whole-grain cereals: what is beyond fibre? Nutr Res Rev 2010; 23:65-134. [PMID: 20565994 DOI: 10.1017/s0954422410000041] [Citation(s) in RCA: 587] [Impact Index Per Article: 41.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Epidemiological studies have clearly shown that whole-grain cereals can protect against obesity, diabetes, CVD and cancers. The specific effects of food structure (increased satiety, reduced transit time and glycaemic response), fibre (improved faecal bulking and satiety, viscosity and SCFA production, and/or reduced glycaemic response) and Mg (better glycaemic homeostasis through increased insulin secretion), together with the antioxidant and anti-carcinogenic properties of numerous bioactive compounds, especially those in the bran and germ (minerals, trace elements, vitamins, carotenoids, polyphenols and alkylresorcinols), are today well-recognised mechanisms in this protection. Recent findings, the exhaustive listing of bioactive compounds found in whole-grain wheat, their content in whole-grain, bran and germ fractions and their estimated bioavailability, have led to new hypotheses. The involvement of polyphenols in cell signalling and gene regulation, and of sulfur compounds, lignin and phytic acid should be considered in antioxidant protection. Whole-grain wheat is also a rich source of methyl donors and lipotropes (methionine, betaine, choline, inositol and folates) that may be involved in cardiovascular and/or hepatic protection, lipid metabolism and DNA methylation. Potential protective effects of bound phenolic acids within the colon, of the B-complex vitamins on the nervous system and mental health, of oligosaccharides as prebiotics, of compounds associated with skeleton health, and of other compounds such as alpha-linolenic acid, policosanol, melatonin, phytosterols and para-aminobenzoic acid also deserve to be studied in more depth. Finally, benefits of nutrigenomics to study complex physiological effects of the 'whole-grain package', and the most promising ways for improving the nutritional quality of cereal products are discussed.
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Maternal copper deficiency perpetuates altered vascular function in Sprague-Dawley rat offspring. J Dev Orig Health Dis 2010; 1:131-40. [DOI: 10.1017/s2040174410000085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Little is known about the consequences of maternal copper (Cu) deficiency on the vascular function of offspring or on perpetuation of vascular effects to a second generation. We examined vascular functional responses in mesenteric arteries from Cu-deficient Sprague-Dawley rat dams and from offspring directly exposed to maternal Cu deficiency during development and lactation and perpetuation of the effects in a second generation of offspring. Dams were fed a diet with marginal (1 mg Cu/kg) or adequate (6 mg Cu/kg) Cu for 3 weeks before conception and throughout pregnancy and lactation periods. Half of the first generation (F1) litters were cross-fostered. At reproductive maturity, F1 pairs were bred within groups resulting in second generation (F2) offspring. At 9 weeks of age, mesenteric artery (200 μm) isometric tension was determined in response to vasoconstrictors and vasorelaxants using a small artery wire myograph. Cu deficiency did not alter the vascular function in dams. In F1 offspring, increased responsiveness to potassium chloride in male offspring was due to direct exposure to maternal Cu deficiency in the birth mother, while enhanced endothelium-dependent relaxation responses in female offspring resulted from postnatal exposure to maternal Cu deficiency. Increased endothelium independent and decreased endothelium-dependent relaxation responses were identified in F2 Cu-deficient male offspring. These data indicate that exposure to maternal Cu deficiency during critical windows of development alter the vascular function across two generations of offspring.
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Krewski D, Chambers A, Birkett N. The use of categorical regression in modeling copper exposure-response relationships. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2010; 73:187-207. [PMID: 20077290 DOI: 10.1080/15287390903340781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Characterization of the exposure-response relationship for copper (Cu) is an essential step in identifying a range of exposures that can prevent against toxicity from either excess or deficiency. Categorical regression is a exposure-response modeling technique that can be used to model data from multiple studies with diverse endpoints simultaneously by organizing the toxicity data into ordered categories of severity. This study describes how categorical regression can be used to model the exposure-response relationship for Cu and presents a preliminary analysis of the comprehensive database on Cu-induced toxicity due to either excess or deficiency. Categorical regression provides a useful tool for summarizing and describing the available data on Cu excess and deficiency, as well as in identifying data gaps in Cu exposure-response. This methodology also allows for a diverse database with considerable variability in animal species, strain, age, and study design to be analyzed in its entirety. The present application of the Cu toxicity database suggests that there is a lack of information on the potential adverse health effects from chronic exposure to Cu; there are also a limited number of studies using marginally excess and deficient levels of Cu. The database presently includes insufficient data to create a complex model that accounts for a large proportion of the heterogeneity in toxicity seen among the available studies on Cu-induced toxicity. The current Cu database is presently being updated in order to permit more comprehensive categorical regression analyses with finer stratification options. The resulting exposure-response model could be used to provide information in the determination of an acceptable range of oral intake for Cu.
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Affiliation(s)
- Daniel Krewski
- McLaughlin Centre for Population Health Risk Assessment, Institute of Population Health, University of Ottawa, Ottawa, Ontario K1N N5, Canada.
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