1
|
Chu J, Wang K, Lu L, Zhao H, Hu J, Xiao W, Wu Q. Advances of Iron and Ferroptosis in Diabetic Kidney Disease. Kidney Int Rep 2024; 9:1972-1985. [PMID: 39081773 PMCID: PMC11284386 DOI: 10.1016/j.ekir.2024.04.012] [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] [Received: 01/21/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 08/02/2024] Open
Abstract
Diabetes mellitus presents a significant threat to human health because it disrupts energy metabolism and gives rise to various complications, including diabetic kidney disease (DKD). Metabolic adaptations occurring in the kidney in response to diabetes contribute to the pathogenesis of DKD. Iron metabolism and ferroptosis, a recently defined form of cell death resulting from iron-dependent excessive accumulation of lipid peroxides, have emerged as crucial players in the progression of DKD. In this comprehensive review, we highlight the profound impact of adaptive and maladaptive responses regulating iron metabolism on the progression of kidney damage in diabetes. We summarize the current understanding of iron homeostasis and ferroptosis in DKD. Finally, we propose that precise manipulation of iron metabolism and ferroptosis may serve as potential strategies for kidney management in diabetes.
Collapse
Affiliation(s)
- Jiayi Chu
- Department of Radiology, Center of Regenerative and Aging Medicine, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Zhejiang, China
| | - Kewu Wang
- Department of Radiology, Center of Regenerative and Aging Medicine, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Zhejiang, China
| | - Lulu Lu
- Department of Nutrition and Toxicology, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines of Zhejiang Province, School of Public Health, Hangzhou Normal University, Hangzhou, China
| | - Hui Zhao
- Department of Radiology, Center of Regenerative and Aging Medicine, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Zhejiang, China
| | - Jibo Hu
- Department of Radiology, Center of Regenerative and Aging Medicine, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Zhejiang, China
| | - Wenbo Xiao
- Department of Radiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, China
| | - Qian Wu
- Department of Radiology, Center of Regenerative and Aging Medicine, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Zhejiang, China
| |
Collapse
|
2
|
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.
Collapse
Affiliation(s)
| | - Diego Muñoz
- School of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
| | | | | | | |
Collapse
|
3
|
Oxidative Stress Biomarkers in Urine of Metal Carpentry Workers Can Be Diagnostic for Occupational Exposure to Low Level of Welding Fumes from Associated Metals. Cancers (Basel) 2021; 13:cancers13133167. [PMID: 34202906 PMCID: PMC8268877 DOI: 10.3390/cancers13133167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/29/2022] Open
Abstract
Urinary concentrations of 16 different exposure biomarkers to metals were determined at the beginning and at the end of a working shift on a group of workers in the metal carpentry industry. Five different oxidative stress biomarkers were also measured, such as the oxidation products of RNA and DNA metabolized and excreted in the urine. The results of workers exposed to metals were compared to those of a control group. The metal concentrations found in these workers were well below the occupational exposure limit values and exceeded the mean concentrations of the same metals in the urine of the control group by a factor of four at maximum. Barium (Ba), mercury (Hg), lead (Pb) and strontium (Sr) were correlated with the RNA oxidative stress biomarker, 8-oxo-7, 8-dihydroguanosine (8-oxoGuo), which was found able to discriminate exposed workers from controls with a high level of specificity and sensitivity. The power of this early diagnostic technique was assessed by means of the ROC curve. Ba, rubidium (Rb), Sr, tellurium (Te), and vanadium (V) were correlated with the level of the protein oxidation biomarker 3-Nitrotyrosine (3-NO2Tyr), and Ba, beryllium (Be), copper (Cu), and Rb with 5-methylcytidine (5-MeCyt), an epigenetic marker of RNA damage. These effect biomarkers can help in identifying those workers that can be defined as "occupationally exposed" even at low exposure levels, and they can provide information about the impact that such doses have on their health.
Collapse
|
4
|
Biocompatibility of Bacterial Magnetosomes as MRI Contrast Agent: A Long-Term In Vivo Follow-Up Study. NANOMATERIALS 2021; 11:nano11051235. [PMID: 34067162 PMCID: PMC8151038 DOI: 10.3390/nano11051235] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/21/2021] [Accepted: 04/30/2021] [Indexed: 01/03/2023]
Abstract
Derived from magnetotactic bacteria (MTB), magnetosomes consist of magnetite crystals enclosed within a lipid bilayer membrane and are known to possess advantages over artificially synthesized nanoparticles because of the narrow size distribution, uniform morphology, high purity and crystallinity, single magnetic domain, good biocompatibility, and easy surface modification. These unique properties have increasingly attracted researchers to apply bacterial magnetosomes (BMs) in the fields of biology and medicine as MRI imaging contrast agents. Due to the concern of biosafety, a long-term follow-up of the distribution and clearance of BMs after entering the body is necessary. In this study, we tracked changes of BMs in major organs of mice up to 135 days after intravenous injection using a combination of several techniques. We not only confirmed the liver as the well-known targeted organs of BMs, but also found that BMs accumulated in the spleen. Besides, two major elimination paths, as well as the approximate length of time for BMs to be cleared from the mice, were revealed. Together, the results not only confirm that BMs have high biocompatibility, but also provide a long-term in-vivo assessment which may further help to forward the clinical applications of BMs as an MRI contrast agent.
Collapse
|
5
|
Pulscher LA, Gray R, McQuilty R, Rose K, Welbergen JA, Phalen DN. Evidence of chronic cadmium exposure identified in the critically endangered Christmas Island flying-fox (Pteropus natalis). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:144374. [PMID: 33421794 DOI: 10.1016/j.scitotenv.2020.144374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
The Christmas Island flying-fox (Pteropus natalis) is the last native mammal on Christmas Island and its population is in decline. Phosphate mining occurs across much of the eastern side of Christmas Island. The phosphate deposits are naturally rich in cadmium, and potentially other metals, which may be threatening the Christmas Island flying-fox population. To test this, concentrations of metals (cadmium, copper, iron, mercury, lead, and zinc) were measured in fur and urine collected from Christmas Island flying-foxes and interpreted concurrently with urinalysis and serum biochemistry data. In addition, metal concentrations in liver and kidney samples from two Christmas Island flying-foxes and associated histological findings from one of these individuals are reported. Fur cadmium concentrations were significantly higher in the Christmas Island flying-fox compared to concentrations found in flying-foxes in mainland Australia. Additionally, 30% of Christmas Island flying-foxes had urine cadmium concentrations exceeding maximum concentrations previously reported in flying-foxes in mainland Australia. Glucosuria and proteinuria were identified in two Christmas Island flying-foxes, suggestive of renal dysfunction. In one aged flying-fox, kidney cadmium concentrations were four-fold higher than toxic thresholds reported for domestic mammals. Microscopic evaluation of this individual identified bone lesions consistent with those described in laboratory animals with chronic cadmium poisoning. These results suggest that Christmas Island flying-foxes are being exposed to cadmium and identification of these sources is recommended as a focus of future research. Unexpectedly, urine iron concentrations in Christmas Island flying-foxes were higher compared to previous studies of Australian mainland flying-foxes, which suggests that urinary excretion of iron may be an important aspect of iron homeostasis in this species whose diet is iron rich.
Collapse
Affiliation(s)
- Laura A Pulscher
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, NSW, Australia.
| | - Rachael Gray
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, NSW, Australia.
| | - Robert McQuilty
- Department of Chemical Pathology, Royal Prince Alfred Hospital, Level 7 Building 65, Missenden Rd, Camperdown, NSW, Australia.
| | - Karrie Rose
- Australian Registry of Wildlife Health, Taronga Conservation Society Australia, Bradleys Head Road, Mosman, NSW 2088, Australia.
| | - Justin A Welbergen
- Hawksbury Institute for the Environment, Western Sydney University, Richmond, NSW 2753, Australia.
| | - David N Phalen
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, NSW, Australia.
| |
Collapse
|
6
|
Zhang F, Li B, Dong H, Chen M, Yao S, Li J, Zhang H, Liu X, Wang H, Song N, Zhang K, Du N, Xu S, Gu L. YdiV regulates Escherichia coli ferric uptake by manipulating the DNA-binding ability of Fur in a SlyD-dependent manner. Nucleic Acids Res 2020; 48:9571-9588. [PMID: 32813023 PMCID: PMC7515728 DOI: 10.1093/nar/gkaa696] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 07/31/2020] [Accepted: 08/13/2020] [Indexed: 12/19/2022] Open
Abstract
Iron is essential for all bacteria. In most bacteria, intracellular iron homeostasis is tightly regulated by the ferric uptake regulator Fur. However, how Fur activates the iron-uptake system during iron deficiency is not fully elucidated. In this study, we found that YdiV, the flagella gene inhibitor, is involved in iron homeostasis in Escherichia coli. Iron deficiency triggers overexpression of YdiV. High levels of YdiV then transforms Fur into a novel form which does not bind DNA in a peptidyl-prolyl cis-trans isomerase SlyD dependent manner. Thus, the cooperation of YdiV, SlyD and Fur activates the gene expression of iron-uptake systems under conditions of iron deficiency. Bacterial invasion assays also demonstrated that both ydiV and slyD are necessary for the survival and growth of uropathogenic E. coli in bladder epithelial cells. This reveals a mechanism where YdiV not only represses flagella expression to make E. coli invisible to the host immune system, but it also promotes iron acquisition to help E. coli overcome host nutritional immunity.
Collapse
Affiliation(s)
- Fengyu Zhang
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Bingqing Li
- Key Laboratory of Rare and Uncommon Diseases, Department of Microbiology, Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Jinan 250062, P.R. China
| | - Hongjie Dong
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Min Chen
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Shun Yao
- School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Jingwen Li
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266237, P.R. China
| | - Honghai Zhang
- Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxi Road, Jinan 250012, P. R. China
| | - Xiangguo Liu
- School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Hongwei Wang
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Nannan Song
- Key Laboratory of Rare and Uncommon Diseases, Department of Microbiology, Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Jinan 250062, P.R. China
| | - Kundi Zhang
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Ning Du
- School of Life Sciences, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Sujuan Xu
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| | - Lichuan Gu
- State Key Laboratory of Microbial Technology, Shandong University, 72 Binhai Road, Qingdao 266237, P.R. China
| |
Collapse
|
7
|
Muñoz D, Maynar M, Barrientos G, Siquier-Coll J, Bartolomé I, Grijota FJ, Robles MC. Effect of an Acute Exercise Until Exhaustion on the Serum and Urinary Concentrations of Cobalt, Copper, and Manganese Among Well-Trained Athletes. Biol Trace Elem Res 2019; 189:387-394. [PMID: 30194520 DOI: 10.1007/s12011-018-1500-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 08/30/2018] [Indexed: 11/29/2022]
Abstract
The current information about the effect of physical exercise on the body concentrations of several minerals is still limited, both in the acute (short-term) and adaptive (long-term) responses. So, this manuscript aims, on the one hand, to assess the possible differences on basal levels of cobalt (Co), copper (Cu), and manganese (Mn) concentrations in serum and urine between athletes and sedentary participants and, on the other hand, to evaluate the effect of an acute progressive physical exercise until voluntary exhaustion on the serum and urinary concentrations of Co, Cu, and Mn. Two groups participated in this survey, one was formed by untrained, sedentary males (CG; n = 26), and the other group was constituted by national endurance (long and middle distances) athletes (AG; n = 21). All participants were from the same region of Spain. Participants of both groups performed a physical test on a treadmill, reaching voluntary exhaustion. Blood and urine samples of each participant were collected before and at after the tests. Once obtained and processed, the concentrations of Co, Cu, and Mn elements were analyzed by inductively coupled plasma mass spectrometry (ICP-MS). The differences in the studied variables were evaluated using a mixed model by means of an ANOVA and Bonferroni post hoc tests. In the comparison of the pre-test values between groups, the results showed that serum concentrations of Mn were significantly lower in CG than in AG (p < 0.01). In urine, Co and Mn levels were significantly higher among CG participants (p < 0.01) than among AG ones, while in the case of Cu, the values were lower (p < 0.01) in the CG than in the AG. Regarding the effects of the effort tests, no significant changes were found among the participants of the CG. It was observed that the serum concentrations of Co (p < 0.05) and Cu (p < 0.01) decreased after the test among the AG participants. Also, the results showed that there were no statistical differences in Co and Mn values (expressed in μg/g creatinine). However, the urinary post-test Cu concentrations were lower (p < 0.05) among AG participants. In basal conditions, serum concentrations of Mn were significantly lower in CG than in AG. In urine, Co and Mn levels were significantly higher among CG participants and Cu level was significantly lower in CG, a fact which may reflect adaptive responses to exercise. An incremental exercise to exhaustion in AG produces a decrease in Co and Cu serum concentrations, as well as in urinary excretion of Cu.
Collapse
Affiliation(s)
- Diego Muñoz
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain.
| | - Marcos Maynar
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - Gema Barrientos
- Education Faculty, University of Salamanca, Henry Collet, 52-70, 37007, Salamanca, Spain
| | - Jesús Siquier-Coll
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - Ignacio Bartolomé
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - Francisco Javier Grijota
- Education Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - María Concepción Robles
- Sport Sciences Faculty, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| |
Collapse
|
8
|
Arain AL, Neitzel RL. A Review of Biomarkers Used for Assessing Human Exposure to Metals from E-Waste. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16101802. [PMID: 31117209 PMCID: PMC6572375 DOI: 10.3390/ijerph16101802] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 12/28/2022]
Abstract
Electronic waste recycling presents workers and communities with a potential for exposures to dangerous chemicals, including metals. This review examines studies that report on blood, hair, and urine biomarkers of communities and workers exposed to metals from e-waste. Our results from the evaluation of 19 publications found that there are consistently elevated levels of lead found in occupationally and non-occupationally exposed populations, in both the formal and the informal e-waste recycling sectors. Various other metals were found to be elevated in different exposure groups assessed using various types of biomarkers, but with less consistency than found in lead. Antimony and cadmium generally showed higher concentrations in exposed groups compared to reference group(s). Mercury and arsenic did not show a trend among exposure groups due to the dietary and environmental considerations. Observed variations in trends amongst exposure groups within studies using multiple biomarkers highlights the need to carefully select appropriate biomarkers. Our study concludes that there is a need for more rigorous research that moves past cross-sectional study designs, involves more thoughtful and methodical selection of biomarkers, and a systematic reporting standard for exposure studies to ensure that results can be compared across studies.
Collapse
Affiliation(s)
- Aubrey L Arain
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Richard L Neitzel
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI 48109, USA.
| |
Collapse
|
9
|
Hydrogen Gas Alleviates Chronic Intermittent Hypoxia-Induced Renal Injury through Reducing Iron Overload. Molecules 2019; 24:molecules24061184. [PMID: 30917568 PMCID: PMC6471060 DOI: 10.3390/molecules24061184] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/23/2019] [Accepted: 03/25/2019] [Indexed: 12/20/2022] Open
Abstract
Iron-induced oxidative stress has been found to be a central player in the pathogenesis of kidney injury. Recent studies have indicated H2 can be used as a novel antioxidant to protect cells. The present study was designed to investigate the protective effects of H2 against chronic intermittent hypoxia (CIH)-induced renal injury and its correlation mechanism involved in iron metabolism. We found that CIH-induced renal iron overloaded along with increased apoptosis and oxidative stress. Iron accumulates mainly occurred in the proximal tubule epithelial cells of rats as showed by Perl’s stain. Moreover, we found that CIH could promote renal transferrin receptor and divalent metal transporter-1 expression, inhibit ceruloplasmin expression. Renal injury, apoptosis and oxidative stress induced by CIH were strikingly attenuated in H2 treated rats. In conclusion, hydrogen may attenuate CIH-induced renal injury at least partially via inhibiting renal iron overload.
Collapse
|
10
|
Iron uptake by ZIP8 and ZIP14 in human proximal tubular epithelial cells. Biometals 2019; 32:211-226. [PMID: 30806852 PMCID: PMC6437295 DOI: 10.1007/s10534-019-00183-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 12/14/2018] [Indexed: 12/11/2022]
Abstract
In patients with iron overload disorders, increasing number of reports of renal dysfunction and renal iron deposition support an association between increased iron exposure and renal injury. In systemic iron overload, elevated circulating levels of transferrin-bound (TBI) and non-transferrin-bound iron (NTBI) are filtered to the renal proximal tubules, where they may cause injury. However, the mechanisms of tubular iron handling remain elusive. To unravel molecular renal proximal tubular NTBI and TBI handling, human conditionally immortalized proximal tubular epithelial cells (ciPTECs) were incubated with 55Fe as NTBI and fluorescently labeled holo-transferrin as TBI. Ferrous iron importers ZIP8 and ZIP14 were localized in the ciPTEC plasma membrane. Whereas silencing of either ZIP8 or ZIP14 alone did not affect 55Fe uptake, combined silencing significantly reduced 55Fe uptake compared to control (p < 0.05). Furthermore, transferrin receptor 1 (TfR1) and ZIP14, but not ZIP8, colocalized with early endosome antigen 1 (EEA1). TfR1 and ZIP14 also colocalized with uptake of fluorescently labeled transferrin. Furthermore, ZIP14 silencing decreased 55Fe uptake after 55Fe-Transferrin exposure (p < 0.05), suggesting ZIP14 could be involved in early endosomal transport of TBI-derived iron into the cytosol. Our data suggest that human proximal tubular epithelial cells take up TBI and NTBI, where ZIP8 and ZIP14 are both involved in NTBI uptake, but ZIP14, not ZIP8, mediates TBI-derived iron uptake. This knowledge provides more insights in the mechanisms of renal iron handling and suggests that ZIP8 and ZIP14 could be potential targets for limiting renal iron reabsorption and enhancing urinary iron excretion in systemic iron overload disorders.
Collapse
|
11
|
van Raaij S, Masereeuw R, Swinkels D, van Swelm R. Inhibition of Nrf2 alters cell stress induced by chronic iron exposure in human proximal tubular epithelial cells. Toxicol Lett 2018; 295:179-186. [DOI: 10.1016/j.toxlet.2018.06.1218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/18/2018] [Accepted: 06/26/2018] [Indexed: 01/19/2023]
|
12
|
E. T. Moore R, Rehkämper M, Kreissig K, Strekopytov S, Larner F. Determination of major and trace element variability in healthy human urine by ICP-QMS and specific gravity normalisation. RSC Adv 2018; 8:38022-38035. [PMID: 35558613 PMCID: PMC9089848 DOI: 10.1039/c8ra06794e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/06/2018] [Indexed: 11/23/2022] Open
Abstract
Sixty five urine samples obtained during one or two non-consecutive days from 10 healthy individuals were analysed for major (Na, Mg, K, Ca) and trace (Co, Cu, Zn, As, Rb, Sr, Mo and Pb) element concentrations. Following microwave digestion, the analyses were carried out using ICP-QMS (inductively coupled plasma quadrupole mass spectrometry) incorporating a collision/reaction cell. Repeat analyses of quality control samples show that the procedure produces unbiased results and is well suited for routine urinalysis of the investigated elements. Concentrations were normalised using specific gravity (SG) and the resultant decrease in variability supports previous conclusions that SG-normalisation appropriately corrects for differences in urine dilution. The elemental concentrations of the individual urine samples show large differences in dispersion. Most variable are As, Co and Zn, with CVs (coefficients of variation) of >75%. The major elements as well as Rb, Sr and Mo display intermediate variability, whilst Cu and Pb have the least elemental dispersion with CV values of about 30%. A detailed assessment shows that the overall elemental variability is governed both by differences between individuals and variations for a single individual over time. Spot urine samples exhibit elemental concentrations that, on average, resemble the daily mean values to within about 30% for all elements except K and Rb. Diet-related changes in urinary element concentration are most prominent for Mg, K, Co, Rb and Pb. The concentrations of Co, As and Rb appear to vary systematically with gender but this may primarily reflect co-variance with specific diets. Urinary element concentrations were quantified by ICP-QMS and variations over time, between individuals and with gender and diet were assessed.![]()
Collapse
Affiliation(s)
- Rebekah E. T. Moore
- Department of Earth Science and Engineering
- Imperial College London
- London SW7 2AZ
- UK
| | - Mark Rehkämper
- Department of Earth Science and Engineering
- Imperial College London
- London SW7 2AZ
- UK
| | - Katharina Kreissig
- Department of Earth Science and Engineering
- Imperial College London
- London SW7 2AZ
- UK
| | | | - Fiona Larner
- Department of Earth Sciences
- University of Oxford
- Oxford OX1 3AN
- UK
| |
Collapse
|
13
|
Affiliation(s)
- Wenhu Zhou
- Xiangya
School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| |
Collapse
|
14
|
Bogale A, Clarke SL, Fiddler J, Hambidge KM, Stoecker BJ. Zinc Supplementation in a Randomized Controlled Trial Decreased ZIP4 and ZIP8 mRNA Abundance in Peripheral Blood Mononuclear Cells of Adult Women. Nutr Metab Insights 2015; 8:7-14. [PMID: 26023281 PMCID: PMC4431478 DOI: 10.4137/nmi.s23233] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/22/2015] [Accepted: 03/24/2015] [Indexed: 12/31/2022] Open
Abstract
Zinc plays an integral role in numerous cellular processes including regulation of gene expression. This randomized placebo-controlled trial in adult women evaluated the effects of 20 mg Zn for 23 days. The mRNA abundance of zinc transporters (ZnT1/ZIP3/ZIP4/ZIP8) and metallothionein (MT1) from peripheral blood mononuclear cells was determined by real-time quantitative polymerase chain reaction. In paired samples (n = 6-9), the ZIP4 (P = 0.036) and ZIP8 (P = 0.038) mRNA abundance decreased following zinc supplementation. ZnT1, ZIP3, and MT1 mRNA abundance did not change significantly. The mean ± standard deviation plasma zinc concentration (by inductively coupled plasma mass spectrometry) at baseline was 680 ± 110 μg/L for the zinc group (n = 24) and 741 ± 92 μg/L for the placebo group (n = 23). At endpoint, plasma zinc in the zinc group increased to 735 ± 80 μg/L (P < 0.01) while in the placebo group (717 ± 100 μg/L) it did not change significantly from baseline. The change in mRNA abundance highlights the importance of further investigating ZIP4 and ZIP8 mRNA abundance as potential zinc status biomarkers.
Collapse
Affiliation(s)
- Alemtsehay Bogale
- School of Nutrition, Food Science and Technology, Hawassa University, Hawassa, Ethiopia
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Stephen L. Clarke
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Joanna Fiddler
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| | | | - Barbara J. Stoecker
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, USA
| |
Collapse
|
15
|
Pfrimer K, Micheletto RF, Marchini JS, Padovan GJ, Moriguti JC, Ferriolli E. Impact of aging on urinary excretion of iron and zinc. Nutr Metab Insights 2014; 7:47-50. [PMID: 24932105 PMCID: PMC4051801 DOI: 10.4137/nmi.s12977] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 01/13/2023] Open
Abstract
PROJECT Data about the influence of aging on urinary excretion of iron and zinc are scarce. The objective of the present study was to compare the concentration of zinc and iron in the urine of healthy elderly subjects and younger adults. PROCEDURE Seven healthy elderly subjects and seven younger adults were selected and submitted to biochemical, clinical, and nutritional tests. After a fasting period, 12-hour urine was collected for the determination of iron and zinc concentrations by graphite furnace atomic absorption spectrophotometry. RESULTS Urinary zinc and iron concentrations of the elderly subjects were not significantly different from that of younger adults. However, the total zinc and iron urinary clearance in 24 hours for the elderly was significantly higher compared with that of younger adults. CONCLUSION There is an increase in urinary iron and zinc clearance with aging. The values reported in this manuscript may be used as references in future studies.
Collapse
Affiliation(s)
- Karina Pfrimer
- Division of General Internal and Geriatric Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
- Division of Clinical Nutrition, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| | | | - Julio Sergio Marchini
- Division of Clinical Nutrition, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| | - Gilberto João Padovan
- Division of Clinical Nutrition, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| | - Julio Cesar Moriguti
- Division of General Internal and Geriatric Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| | - Eduardo Ferriolli
- Division of General Internal and Geriatric Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| |
Collapse
|
16
|
Kuiper N, Rowell C, Nriagu J, Shomar B. What do the trace metal contents of urine and toenail samples from Qatar׳s farm workers bioindicate? ENVIRONMENTAL RESEARCH 2014; 131:86-94. [PMID: 24674761 DOI: 10.1016/j.envres.2014.02.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 02/12/2014] [Accepted: 02/17/2014] [Indexed: 05/21/2023]
Abstract
Qatar׳s farm workers provide a unique population for exposure study: they are young, healthy males. This study combined trace element profiles in urine and toenail with survey information from 239 farm workers to assess the extent to which the biomarkers provide complementary exposure information. Urinary Mo levels (average=114 µg/L) were elevated; average urinary values (µg/L) for all other elements were: V (1.02), Cr (0.55), Mn (2.15), Fe (34.1), Co (0.47), Ni (2.95), Cu (15.0), As (47.8), Se (25.7), Cd (1.09), Ba (22.5), Pb (2.50) and U (0.15). Average toenail concentrations (mg/kg) were: Mn (2.48), Cu (4.43), As (0.26), Se (0.58), Mo (0.07), Cd (0.03), Ba (1.00), Pb (0.51) and U (0.02). No significant association was found between corresponding elements in urine and toenails. Elemental profiles suggest groundwater (with the exception of Mo) and soil-dust-crop exposure pathways cannot account for elemental variations. The main factors moderating trace element contents are related to depuration processes involving participants׳ trace element body burden prior to work in Qatar, and interactions of trace element metabolic cycles which over-ride the exposure footprint. Toenail and urine need to be carefully validated before reliable use as biomarkers of exposure in general populations for most elements in the study.
Collapse
Affiliation(s)
- Nora Kuiper
- Qatar Environment and Energy Research Institute (QEERI), Qatar Foundation, P.O. Box 5825, Doha, Qatar
| | - Candace Rowell
- Qatar Environment and Energy Research Institute (QEERI), Qatar Foundation, P.O. Box 5825, Doha, Qatar
| | - Jerome Nriagu
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, MI 48109, USA
| | - Basem Shomar
- Qatar Environment and Energy Research Institute (QEERI), Qatar Foundation, P.O. Box 5825, Doha, Qatar.
| |
Collapse
|
17
|
Fort M, Cosín-Tomás M, Grimalt JO, Querol X, Casas M, Sunyer J. Assessment of exposure to trace metals in a cohort of pregnant women from an urban center by urine analysis in the first and third trimesters of pregnancy. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:9234-41. [PMID: 24710728 DOI: 10.1007/s11356-014-2827-6] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 03/24/2014] [Indexed: 05/20/2023]
Abstract
Prenatal exposure to trace metals, whether they are essential, non-essential, or toxic, must be assessed for their potential health effects in the offspring. Herein is reported an approach to this end which involved collection of urine samples during the first and third trimesters of pregnancy from 489 mothers from Sabadell (Catalonia, Spain), a highly industrialized town. These samples were analyzed for cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), selenium (Se), arsenic (As), molybdenum (Mo), cadmium (Cd), antimonium (Sb), cesium (Cs), thallium (Tl), and lead (Pb). An acid digestion method was developed and validated for inductively coupled plasma quadruple mass spectrometry (Q-ICP-MS) analysis of these 12 metals. The median concentrations of metals ranged from 0.13 to 290 μg/g creatinine, the highest levels were found for Zn and the lowest for Th. The mean concentrations of most metals except As, Ni, Th, and Pb showed statistically significant differences between both trimesters. The concentrations of Mo, Se, Cd, Cs, and Sb were higher in the first than in the third trimester, whereas the opposite was found for Co, Cu, and Zn. The concentrations of all metals in both sampling periods showed statistically significant correlations (p<0.01 for Mo and Cu, p<0.001 for the others). The significant correlations of metal urine concentrations in the first and third trimesters of pregnancy suggest that the observed differences between both periods are related to physiological changes. Accordingly, the measured urine concentrations during either the first or third trimesters can be used as estimates of exposure during pregnancy and can serve as markers for prenatal intake of these metals in the studied cohort.
Collapse
Affiliation(s)
- Marta Fort
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Jordi Girona, 18., 08034, Barcelona, Catalonia, Spain
| | | | | | | | | | | |
Collapse
|
18
|
Faure P, Ducros V, Couzy F, Favier A, Ferry M. Rapidly exchangeable pool study of zinc in free-living or institutionalized elderly women. Nutrition 2005; 21:831-7. [PMID: 15975491 DOI: 10.1016/j.nut.2004.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2004] [Accepted: 12/01/2004] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We evaluated the effect of age and institutionalization on zinc metabolism by using a stable isotope technique. METHODS This was a randomized case-control study. Three groups were recruited: nine young women (group 1, ages 36+/-1 y) as controls, nine free-living elderly women (group 2, ages 72+/-2 y), and nine institutionalized women (group 3, ages 73+/-2 y). Only women were recruited to obtain homogeneous groups. The study was set in a Valence hospital (France) in the geriatric department (headed by Dr. Ferry). The experimental design of the study was reviewed and approved by the local ethical committee, and all participants signed a consent form. No subject dropped out of the study. A zinc stable isotope label (0.73 mg of (70)Zn) was injected intravenously into patients and measured by inductively coupled plasma mass spectrometry. RESULTS Decay curves of the plasma (70)Zn followed a one-compartment kinetic leading to the determination of one pool. The size of this pool suggested that it corresponded to the liver compartment. The size of this pool was significantly smaller in elderly people. (70)Zn plasma resident time was significantly longer in elderly individuals, and shorter in institutionalized than in free-living elderly subjects. CONCLUSION These data suggest that the zinc metabolism of elderly women is related to lifestyle or its consequences and to age. Moreover, we have demonstrated that kinetic studies using stable isotopes of zinc can provide novel information on exchangeable zinc pools in clinical situations.
Collapse
Affiliation(s)
- Patrice Faure
- Laboratoire HP2, Faculté de Médecine et de Pharmacie, BP 217, Grenoble, France.
| | | | | | | | | |
Collapse
|
19
|
Straff W, Möller M, Jakobi N, Weishoff-Houben M, Dott W, Wiesmüller GA. Predictive value of human biomonitoring in environmental medicine: experiences at the outpatient unit of environmental medicine (UEM) of the University Hospital Aachen, Germany. Int J Hyg Environ Health 2002; 205:337-46. [PMID: 12173531 DOI: 10.1078/1438-4639-00160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
There is little data on the distribution of biomonitoring parameters in patients at outpatient Units of Environmental Medicine (UEM). We evaluated the biomonitoring parameters of 646 UEM outpatients from our University Hospital 1988-1998. Few patients were exposed to specific substances. Data of patients who were not obviously exposed was analysed statistically (geometric mean, standard deviation, median, 95th percentile). Results were compared with reference values in literature. Normal distribution of biomonitoring parameters was rare. 95th percentiles for arsenic, chromium, selenium, zinc, phenol and toluene were below standard, 95th percentiles for copper and mercury above, and 95th percentiles for lead, cadmium, pentachlorophenol, lindane, and beta-hexachlorocyclohexane were within the published range of reference values. Thallium as well as most volatile organic compounds analyzed were below detection levels. Aluminum and fluorine exposure was rarely analysed. In view of these results, it is concluded that the indication for biomonitoring needs to be stringent as levels of biomonitoring parameters are generally not risen in patients of the UEM.
Collapse
|
20
|
Karita K, Takano T, Nakamura S, Haga N, Iwaya T. A search for calcium, magnesium and zinc levels in fingernails of 135 patients with osteogenesis imperfecta. J Trace Elem Med Biol 2001; 15:36-9. [PMID: 11603825 DOI: 10.1016/s0946-672x(01)80024-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Calcium (Ca), magnesium (Mg) and zinc (Zn) levels of fingernails were measured in 135 patients with osteogenesis imperfecta (OI) and compared with the sex- and age-matched healthy controls. Zinc levels in OI nails were significantly higher than that in normal subjects, but in cases and controls Ca and Mg levels were not significantly different. The ratios of Ca/Zn and Mg/Zn in OI nails differed significantly from those in controls, but a similar Ca/Mg ratio was found in nails of both groups. These results suggest that Zn levels in fingernails may reflect abnormal Zn metabolism in OI. To determine Zn metabolism changes in OI, further studies are needed.
Collapse
Affiliation(s)
- K Karita
- Department of Hygiene and Public Health, Teikyo University School of Medicine, Japan.
| | | | | | | | | |
Collapse
|