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Moawad AM, Awady S, Ali AAER, Abdelgwad M, Belal S, Taha SHN, Mohamed MI, Hassan FM. Phthalate Exposure and Coronary Heart Disease: Possible Implications of Oxidative Stress and Altered miRNA Expression. Chem Res Toxicol 2024; 37:723-730. [PMID: 38636967 DOI: 10.1021/acs.chemrestox.3c00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The relationship between phthalate exposure and coronary heart disease (CHD) is still unclear. This study aimed to investigate the association between phthalate exposure and CHD and determine the possible atherogenic mechanisms of phthalates by assessing oxidative stress and altering miRNA expression. This case-control study included 110 participants (55 CHD patients and 55 healthy controls). The levels of oxidative stress markers, malondialdehyde (MDA), and superoxide dismutase (SOD), and the expression of miRNA-155 (miR-155) and miRNA-208a (miR-208a), were measured and correlated with the urinary mono-2-ethylhexyl phthalate (MEHP). Highly significant differences were detected between the CHD cases and the control group regarding MEHP, MDA, SOD, miR-155, and miR-208a (p-value < 0.001). Spearman correlations revealed a significant positive correlation between MDA and MEHP in urine (P = 0.001 and rs = 0.316) and a significant negative correlation between SOD and MEHP in urine (P < 0.001 and rs = -0.345). Furthermore, significant positive correlations were observed between miR-155 and urinary MEHP (P = 0.001 and rs = 0.318) and miR-208a and urinary MEHP (P < 0.001 and rs = -0.352). This study revealed an association between phthalate exposure, as indicated by urinary MEHP and CHD; altered expression of miR-155 and miR-208a and oxidative stress could be the fundamental mechanisms.
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Affiliation(s)
- Asmaa Mohammad Moawad
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Sara Awady
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Abla Abd El Rahman Ali
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Marwa Abdelgwad
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Soliman Belal
- Department of Critical Care, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Sarah Hamed N Taha
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Marwa Issak Mohamed
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
| | - Fatma Mohamed Hassan
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Cairo University, Kasr Alainy Street, Cairo 11562, Egypt
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Nishi R, Harada A, Hori K, Maeda S, Momoi Y, Yonezawa T. 8-Hydroxy-2'-deoxyguanosine and malondialdehyde in plasma and their association with disease severity in 20 cats with chronic kidney disease. J Feline Med Surg 2023; 25:1098612X231173519. [PMID: 37318844 PMCID: PMC10811979 DOI: 10.1177/1098612x231173519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
OBJECTIVES Oxidative stress is associated with the development and progression of chronic kidney disease (CKD) in humans. The aim of this study was to evaluate the concentrations of oxidative stress markers, 8-hydroxy-2'-deoxyguanosine (8-OHdG) and malondialdehyde (MDA), in the plasma and urine of cats with different stages of CKD. METHODS Plasma and urine samples were collected from cats with CKD that were referred to the Veterinary Medical Center of the University of Tokyo between April 2019 and October 2022. Plasma and urine samples were collected from healthy cats (n = 6 at most), cats with stage 2 CKD (n = 8) and stage 3-4 CKD (n = 12), and cats with idiopathic cystitis (disease control, n = 5). Plasma and urine concentrations of 8-OHdG and MDA were measured using ELISA and thiobarbituric acid reactive substances assay kits, respectively. RESULTS The median plasma 8-OHdG concentrations were 0.156 ng/ml (<0.125-0.210 ng/ml) in the healthy group, <0.125 ng/ml (range <0.125 ng/ml) in the idiopathic cystitis group, 0.246 ng/ml (range 0.170-0.403 ng/ml) in cats with stage 2 CKD and 0.433 ng/ml (range 0.209-1.052 ng/ml) in cats with stage 3-4 CKD. Concentrations in stage 3-4 CKD were significantly higher than those in the healthy and disease control groups. Plasma MDA concentrations were low in the healthy and disease control groups and significantly higher in cats with stage 3-4 CKD. In every cat with CKD, plasma 8-OHdG and MDA concentrations were positively correlated with plasma creatinine concentrations (8-OHdG, rs = 0.68; MDA, rs = 0.67). Urinary 8-OHdG/urinary creatinine (u-CRE) and urinary MDA/u-CRE levels did not differ significantly between the groups; however, it was difficult to evaluate them because of the small sample size. CONCLUSIONS AND RELEVANCE This report shows that plasma 8-OHdG and MDA concentrations increase with the severity of feline CKD. These markers may be useful for assessing oxidative stress in cats with CKD.
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Affiliation(s)
- Reo Nishi
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Airi Harada
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Koji Hori
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Shingo Maeda
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Yasuyuki Momoi
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Tomohiro Yonezawa
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
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Stieb D, Shutt RH, Kauri LM, Mason-Renton S, Chen L, Szyszkowicz M, Dobbin NA, Rigden M, Jovic B, Mulholland M, Green MS, Liu L, Pelletier G, Weichenthal SA, Dales RE, Andrade J, Luginaah I. Associations between air pollution and cardio-respiratory physiological measures in older adults exercising outdoors. Int J Environ Health Res 2021; 31:901-914. [PMID: 31829725 DOI: 10.1080/09603123.2019.1699506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
We examined whether exercising indoors vs. outdoors reduced the cardio-respiratory effects of outdoor air pollution. Adults ≥55 were randomly assigned to exercise indoors when the Air Quality Health Index was ≥5 and outdoors on other days (intervention group, n = 37), or outdoors everyday (control group, n = 35). Both groups completed cardio-respiratory measurements before and after exercise for up to 10 weeks. Data were analyzed using linear mixed effect regression models. In the control group, an interquartile range increase in fine particulate matter (PM2.5) was associated with increases of 1.4% in heart rate (standard error (SE) = 0.7%) and 5.6% (SE = 2.6%) in malondialdehyde, and decreases of 5.6% (SE = 2.5%) to 16.5% (SE = 7.5%) in heart rate variability measures. While the hypothesized benefit of indoor vs. outdoor exercise could not be demonstrated due to an insufficient number of intervention days (n = 2), the study provides evidence of short-term effects of air pollution in older adults. ISRCTN #26552763.
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Affiliation(s)
- David Stieb
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - Robin H Shutt
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Lisa M Kauri
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
- Controlled Substances and Cannabis Branch (current), Health Canada, Ottawa, Canada
| | - Sarah Mason-Renton
- Department of Geography, Western University, London, Canada
- Lystek International Inc. (current), Cambridge, Canada
| | - Li Chen
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Mieczyslaw Szyszkowicz
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Nina A Dobbin
- Air Health Science Division, Water and Air Quality Bureau, Health Canada, Ottawa, Canada
- Chemical Emergency Preparedness and Response Unit (current), Health Canada, Vancouver, Canada
| | - Marc Rigden
- Hazard Identification Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Branka Jovic
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | | | | | - Ling Liu
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Guillaume Pelletier
- Hazard Identification Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Scott A Weichenthal
- Air Health Science Division, Water and Air Quality Bureau, Health Canada, Ottawa, Canada
- Environmental Epidemiology Research Group, McGill University, Montreal, Canada
| | - Robert E Dales
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
- Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Julie Andrade
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Isaac Luginaah
- Department of Geography, Western University, London, Canada
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Song JH, Kim H, Jeong M, Kong MJ, Choi HK, Jun W, Kim Y, Choi KC. In Vivo Evaluation of Dendropanax morbifera Leaf Extract for Anti-Obesity and Cholesterol-Lowering Activity in Mice. Nutrients 2021; 13:1424. [PMID: 33922621 PMCID: PMC8146056 DOI: 10.3390/nu13051424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/13/2021] [Accepted: 04/20/2021] [Indexed: 12/31/2022] Open
Abstract
Metabolic syndrome is a worldwide health problem, and obesity is closely related to type 2 diabetes, cardiovascular disease, hypertension, and cancer. According to WHO in 2018, the prevalence of obesity in 2016 tripled compared to 1975. D. morbifera reduces bad cholesterol and triglycerides levels in the blood and provides various antioxidant nutrients and germicidal sub-stances, as well as selenium, which helps to remove active oxygen. Moreover, D. morbifera is useful for treating cardiovascular diseases, hypertension, hyperlipidemia, and diabetes. Therefore, we study in vivo efficacy of D. morbifera to investigate the prevention effect of obesity and cholesterol. The weight and body fat were effectively reduced by D. morbifera water (DLW) extract administration to high-fat diet-fed C57BL/6 mice compared to those of control mice. The group treated with DLW 500 mg∙kg-1∙d-1 had significantly lower body weights compared to the control group. In addition, High-density lipoprotein (HDL) cholesterol increased in the group treated with DLW 500 mg∙kg-1∙d-1. The effect of DLW on the serum lipid profile could be helpful to prevent obesity. DLW suppresses lipid formation in adipocytes and decreases body fat. In conclusion, DLW can be applied to develop anti-obesity functional foods and other products to reduce body fat.
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Affiliation(s)
- Ji-Hye Song
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.-H.S.); (H.K.); (M.J.); (M.J.K.)
| | - Hyunhee Kim
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.-H.S.); (H.K.); (M.J.); (M.J.K.)
| | - Minseok Jeong
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.-H.S.); (H.K.); (M.J.); (M.J.K.)
| | - Min Jung Kong
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.-H.S.); (H.K.); (M.J.); (M.J.K.)
| | | | - Woojin Jun
- Division of Food and Nutrition, Chonnam National University, Gwangju 61186, Korea;
| | - Yongjae Kim
- SDC Research Institute, Jeollanam-do 57309, Korea;
| | - Kyung-Chul Choi
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea; (J.-H.S.); (H.K.); (M.J.); (M.J.K.)
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Pratiwi DA, Haryanto B. Effect of particulate matter 2.5 exposure to urinary malondialdehyde levels of public transport drivers in Jakarta. Rev Environ Health 2020; 35:295-300. [PMID: 32639945 DOI: 10.1515/reveh-2020-0017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/11/2020] [Indexed: 06/11/2023]
Abstract
Background People who work long hours on the road are intensively exposed to high levels of fine particulate matters (PM2.5) which may lead to oxidative stress mechanisms in the human body that cause deleterious health problems. Malondialdehyde (MDA) is the major metabolite produced during lipid peroxidation metabolism that serves as a reliable biomarker for oxidative stress in cells. Objectives To identify the association between PM2.5 exposure and other characteristics with urinary MDA levels among public transport drivers in Jakarta. Methods A cross-sectional design was implemented by involving 130 public transport drivers of nine trajectories from Kampung Melayu Terminal, Jakarta. The continuous PM2.5 data were collected in personal measurement during one round trip of driving. Weight and height measurements were obtained to calculate body mass index (BMI) and structured questionnaires were completed to identify other characteristics. MDA levels were examined from the driver's urine right after driving and evaluated using TBARS analysis. Results The average of PM2.5 exposure was 91.56 ± 20.05 μg/m3 and MDA levels were 2.23 ± 1.57 nmoL/mL. Drivers with overweight and obese BMI had significantly higher MDA levels (2.66 ± 1.65 nmoL/mL) compared to those with normal and underweight BMI status (1.97 ± 1.47 nmoL/mL). Multiple linear regression analysis demonstrated low PM2.5 exposure, normal and underweight BMI status, and a long period of working as drivers were associated with MDA levels (p<0.05). Contrary to the prior study, PM2.5 exposure was negatively associated with MDA levels due to most drivers' BMI status being normal and underweight. Conclusion Our study suggests that the drivers who were obese and overweight should lose weight to lower the risk of increased MDA levels. We also suggest the drivers to consider maintaining their vehicle's ventilation system or using personal protection equipment (PPE) to avoid high PM2.5 exposure while driving.
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Affiliation(s)
- Damai Arum Pratiwi
- Environmental Health, Universitas Indonesia, Depok, Jawa Barat, Indonesia
| | - Budi Haryanto
- Environmental Health, Universitas Indonesia, Depok, Jawa Barat, Indonesia
- Research Center for Climate Change, Universitas Indonesia, Gedung PAU lt.8.5 Rektorat UI, Kampus UI, 16424, Depok, Jawa Barat, Indonesia
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Rada MP, Ciortea R, Măluţan AM, Doumouchtsis SK, Bucuri CE, Clim A, Roman A, Mihu D. The profile of urinary biomarkers in overactive bladder. Neurourol Urodyn 2020; 39:2305-2313. [PMID: 32813897 DOI: 10.1002/nau.24487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/06/2020] [Indexed: 12/20/2022]
Abstract
AIMS In overactive bladder (OAB) research, different biomarkers have been proposed as diagnostic tools and may be used to create individual patient profiles. Assessing the diagnostic performance of biomarkers would better outline their utility. Therefore, our aim was to investigate the diagnostic value of four urinary biomarkers: human brain derived neurotrophic factor (hBDNF), malondialdehyde (MDA), h nerve growth factor (hNGF) and h 8-hydroxydeoxyguanosine in women with OAB. These are neurotrophins/oxidative stress markers that have been linked to lower urinary tract symptoms. METHODS A total of 105 women were included in the study and distributed in two groups: a group with OAB (n = 53) and a control group (n = 50). The levels of the biomarkers were determined using enzyme-linked immunosorbent assay technique and they were compared between the groups. If the Mann-Whitney test demonstrated a statistically significant difference, receiver operating curves (ROC) analysis was undertaken. RESULTS When normalized to urinary creatinine, hBDNF, MDA, and hNGF showed significantly increased values in women with OAB as compared to controls, whereas 8-OHdG showed no significant difference. The diagnostic performance of these biomarkers was analyzed based on the area under the ROC curve (AUC). MDA had the highest AUC (0.75), followed by hNGF (0.69) and hBDNF (0.67). CONCLUSIONS Our findings suggest that MDA, a relatively novel biomarker in OAB research, has a fair performance as a diagnostic tool for OAB. Moreover, urinary neurotrophins (NGF and BDNF) as biomarkers may have a role in the diagnostic pathways of women with OAB symptoms.
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Affiliation(s)
- Maria Patricia Rada
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Răzvan Ciortea
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei Mihai Măluţan
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Stergios K Doumouchtsis
- Department of Obstetrics and Gynaecology, Epsom & St Helier University Hospitals NHS Trust, UK
- Institute of Medical and Biomedical Education, St George's University of London, London, UK
- Laboratory of Experimental Surgery and Surgical Research N S Christeas, Athens University Medical School, Athens, Greece
- American University of the Caribbean School of Medicine, Florida
| | - Carmen Elena Bucuri
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Adelina Clim
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Andrei Roman
- Department of Radiology, "Prof. Dr. Ion Chiricuţă" Oncology Institute Cluj-Napoca, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Mihu
- 2nd Department of Obstetrics-Gynaecology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Kartavenka K, Panuwet P, Yakimavets V, Jaikang C, Thipubon K, D’Souza PE, Barr DB, Ryan PB. LC-MS Quantification of Malondialdehyde-Dansylhydrazine Derivatives in Urine and Serum Samples. J Anal Toxicol 2020; 44:470-481. [PMID: 31897465 PMCID: PMC8269965 DOI: 10.1093/jat/bkz112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/21/2019] [Accepted: 11/03/2019] [Indexed: 12/22/2022] Open
Abstract
We developed a robust analytical method for quantification of malondialdehyde (MDA) in urine and serum samples using dansylhydrazine (DH) as a derivatizing reagent. The derivatization procedure was partially carried out using an autosampler injection program to minimize errors associated with the low-volume addition of reagents and was optimized to yield a stable hydrazone derivative of MDA and its labeled d2-MDA analogue. The target MDA-DH derivatives were separated on an Agilent Zorbax Eclipse Plus Phenyl-Hexyl (3.0 × 100 mm, 3.5 μm) column. The mass-to-charge ratios of the target derivatives [(M+H)+ of 302 and 304 for MDA-DH and d2-MDA-DH, respectively] were analyzed in single ion monitoring mode using a single quadrupole mass spectrometer operated under positive electrospray ionization. The method limits of quantification were 5.63 nM (or 0.405 ng/mL) for urine analysis and 5.68 nM (or 0.409 ng/mL) for serum analysis. The quantification range for urine analysis was 5.63-500 nM (0.405-36.0 ng/mL) while the quantification range for serum analysis was 5.68-341 nM (0.409-24.6 ng/mL). The method showed good relative recoveries (98-103%), good accuracies (92-98%), and acceptable precisions (relative standard deviations 1.8-7.3% for inter-day precision; 1.8-6.1% for intra-day precision) as observed from the repeat analysis of quality control samples prepared at different concentrations. The method was used to measure MDA in individual urine samples (n = 287) and de-identified archived serum samples (n = 22) to assess the overall performance of the method. The results demonstrated that our method is capable of measuring urinary and serum levels of MDA, allowing its future application in epidemiologic investigations.
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Affiliation(s)
- Kostya Kartavenka
- Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Parinya Panuwet
- Laboratory of Exposure Assessment and Development for Environmental Research (LEADER), Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Volha Yakimavets
- Laboratory of Exposure Assessment and Development for Environmental Research (LEADER), Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Churdsak Jaikang
- Toxicology Section, Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, 110 Intavaroros Road, Sriphum Sub-district, Mueang Chiang Mai District, Chiang Mai 50200, Thailand
| | - Kanitarin Thipubon
- Toxicology Section, Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, 110 Intavaroros Road, Sriphum Sub-district, Mueang Chiang Mai District, Chiang Mai 50200, Thailand
| | - Priya Esilda D’Souza
- Laboratory of Exposure Assessment and Development for Environmental Research (LEADER), Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - Dana Boyd Barr
- Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
- Laboratory of Exposure Assessment and Development for Environmental Research (LEADER), Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
| | - P Barry Ryan
- Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
- Laboratory of Exposure Assessment and Development for Environmental Research (LEADER), Department of Environmental Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, GA 30322, USA
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Abstract
PURPOSE The Hebei Spirit Oil Spill occurred on 7 December 2007 and resulted in the spillage of 12 547 kl of crude oil on the coastline near Taean. Historically, this was the largest oil spill in Korean water. The health effect research on Hebei Spirit Oil Spill (HEROS) is a prospective cohort study that aimed to evaluate the long-term health effects of oil spill exposure on residents in the affected community. PARTICIPANTS The Taean Environmental Health Center initially enrolled adults, adolescents and children living in Taean in 2009 and 2010. Follow-up surveys of participating adults and children were conducted every other year. By 2017, a total of 9585 adults and 2216 children and adolescents were enrolled. Of these, 294 adults and 102 children and adolescents were included in all subsequent surveys. FINDINGS TO DATE Children who lived closer to the oil spill site exhibited a lower level of pulmonary function and higher prevalence of allergic rhinitis, than those who lived further away from the oil spill site. Adults who lived in a highly exposed area or participated in clean-up work had higher urine levels of the oxidative stress biomarkers malondialdehyde and 8-hydroxydeoxyguanosine. Changes in haematological parameters during a 3-year period were observed in residents of both sexes in highly exposed areas, in addition to increases in respiratory diseases and mental health problems in female and male participants, respectively. FUTURE PLANS The findings of this study will better enable policy makers to develop environmental health policies intended to prevent adverse health effects in residents of communities affected by oil spills, as well as policies regarding the management of future oil accidents. The HEROS study will continue to follow participants in future and will be updated to enable an investigation of long-term health effects.
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Affiliation(s)
- Myung Sook Park
- Environmental Health Research Team, Taean Environmental Health Center, Taean, Chungnam, Republic of Korea
| | - Kyung-Hwa Choi
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Seung-Hwa Lee
- Environmental Health Research Team, Taean Environmental Health Center, Taean, Chungnam, Republic of Korea
| | - Jong-Il Hur
- Environmental Health Research Team, Taean Environmental Health Center, Taean, Chungnam, Republic of Korea
| | - Su Ryeon Noh
- Department of Public Health and Environment, Kosin University, Busan, Republic of Korea
| | - Woo-Chul Jeong
- Department of Occupational and Environmental Medicine, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Gyeonggi, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
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Sakaguchi C, Miura N, Ohara H, Nagata Y. Effects of reduced exposure to cigarette smoking on changes in biomarkers of potential harm in adult smokers: results of combined analysis of two clinical studies. Biomarkers 2019; 24:457-468. [PMID: 31084221 DOI: 10.1080/1354750x.2019.1609579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 04/13/2019] [Indexed: 12/27/2022]
Abstract
Purpose: Nonconventional vapor products (NVP), designed to reduce exposure to cigarette smoke toxicants (CSTs), could cause changes in biomarkers of potential harm (BoPH). Although, NVPs reduced CSTs exposure compared to conventional cigarettes (CC), the changes in the BoPH values varied among the studies. Hence, further information on BoPH using NVPs is needed. Material and methods: The data of two similarly designed studies using a kind of NVP, a noncombustion and nonheating inhaler type of smokeless tobacco product (NCIT) used under 31-day confinement, were pooled, and the differences in 15 BoPH between smokers and nonsmokers at baseline and between the 1 mg tar CC (CC1) group and NCIT group at Day 28/29 were analyzed. Results: At baseline, the levels of eight BoPH (red blood cells, white blood cells, 8-epi-prostaglandin F2α, 8-hydroxy-2'-deoxyguanosine, malondialdehyde, 11-dehydrothromboxane B2, total cholesterol and glucose) were significantly different between smokers and nonsmokers. At Day 28/29, the levels of six BoPH were significantly different between NCIT and CC1 (8-epi-prostaglandin F2α, malondialdehyde, 11-dehydrothromboxane B2: CC1 > NCIT, total bilirubin, low-density lipoprotein cholesterol and total cholesterol: CC1 < NCIT). Conclusions: Reduced exposure to CSTs has favorable effects on BoPH associated with oxidative stress, antioxidant capacity and platelet activation/coagulation but not in lipid metabolism.
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Affiliation(s)
- Chikako Sakaguchi
- a Scientific and Regulatory Affairs , Japan Tobacco Inc , Tokyo , Japan
| | - Naoki Miura
- a Scientific and Regulatory Affairs , Japan Tobacco Inc , Tokyo , Japan
| | - Hiromi Ohara
- b R&D group , Japan Tobacco Inc , Yokohama , Japan
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Domingo-Relloso A, Grau-Perez M, Galan-Chilet I, Garrido-Martinez MJ, Tormos C, Navas-Acien A, Gomez-Ariza JL, Monzo-Beltran L, Saez-Tormo G, Garcia-Barrera T, Dueñas Laita A, Briongos Figuero LS, Martin-Escudero JC, Chaves FJ, Redon J, Tellez-Plaza M. Urinary metals and metal mixtures and oxidative stress biomarkers in an adult population from Spain: The Hortega Study. Environ Int 2019; 123:171-180. [PMID: 30529889 DOI: 10.1016/j.envint.2018.11.055] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/02/2018] [Accepted: 11/21/2018] [Indexed: 05/18/2023]
Abstract
INTRODUCTION Few studies have investigated the role of exposure to metals and metal mixtures on oxidative stress in the general population. OBJECTIVES We evaluated the cross-sectional association of urinary metal and metal mixtures with urinary oxidative stress biomarkers, including oxidized to reduced glutathione ratio (GSSG/GSH), malondialdehyde (MDA), and 8‑oxo‑7,8‑dihydroguanine (8-oxo-dG), in a representative sample of a general population from Spain (Hortega Study). METHODS Urine antimony (Sb), barium (Ba), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), molybdenum (Mo), vanadium (V) and zinc (Zn) were measured by ICPMS in 1440 Hortega Study participants. RESULTS The geometric mean ratios (GMRs) of GSSG/GSH comparing the 80th to the 20th percentiles of metal distributions were 1.15 (95% confidence intervals [95% CI]: 1.03-1.27) for Mo, 1.17 (1.05-1.31) for Ba, 1.23 (1.04-1.46) for Cr and 1.18 (1.00-1.40) for V. For MDA, the corresponding GMRs (95% CI) were 1.13 (1.03-1.24) for Zn and 1.12 (1.02-1.23) for Cd. In 8-oxo-dG models, the corresponding GMR (95% CI) were 1.12 (1.01-1.23) for Zn and 1.09 (0.99-1.20) for Cd. Cr for GSSG/GSH and Zn for MDA and 8-oxo-dG drove most of the observed associations. Principal component (PC) 1 (largely reflecting non-essential metals) was positively associated with GSSG/GSH. The association of PC2 (largely reflecting essential metals) was positive for GSSG/GSH but inverse for MDA. CONCLUSIONS Urine Ba, Cd, Cr, Mo, V and Zn were positively associated with oxidative stress measures at metal exposure levels relevant for the general population. The potential health consequences of environmental, including nutritional, exposure to these metals warrants further investigation.
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Affiliation(s)
- Arce Domingo-Relloso
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Statistics and Operational Research, University of Valencia, Valencia, Spain; Department of Environmental Health Sciences, Columbia University, New York, USA
| | - Maria Grau-Perez
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Statistics and Operational Research, University of Valencia, Valencia, Spain; Department of Environmental Health Sciences, Columbia University, New York, USA.
| | - Inmaculada Galan-Chilet
- Genomics and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain
| | - Maria J Garrido-Martinez
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Statistics and Operational Research, University of Valencia, Valencia, Spain
| | - Carmen Tormos
- Department of Biochemistry and Molecular Biology, School of Medicine-INCLIVA, University of Valencia, Valencia, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University, New York, USA
| | | | - Lidia Monzo-Beltran
- Department of Biochemistry and Molecular Biology, School of Medicine-INCLIVA, University of Valencia, Valencia, Spain
| | - Guillermo Saez-Tormo
- Department of Biochemistry and Molecular Biology, School of Medicine-INCLIVA, University of Valencia, Valencia, Spain; Service of Clinical Analyses, University Hospital Doctor Peset, Valencia, Spain
| | | | | | | | | | - F Javier Chaves
- Genomics and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Barcelona, Spain
| | - Josep Redon
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Internal Medicine, Hospital Clínico de Valencia, Valencia, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Carlos III Health Institutes, Madrid, Spain
| | - Maria Tellez-Plaza
- Area of Cardiometabolic and Renal Risk, Biomedical Research Institute Hospital Clinic of Valencia (INCLIVA), Valencia, Spain; Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institutes, Madrid, Spain; Department of Environmental Health and Engineering, Johns Hopkins University Baltimore, USA
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11
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Martinez-Moral MP, Kannan K. How stable is oxidative stress level? An observational study of intra- and inter-individual variability in urinary oxidative stress biomarkers of DNA, proteins, and lipids in healthy individuals. Environ Int 2019; 123:382-389. [PMID: 30572170 PMCID: PMC6396322 DOI: 10.1016/j.envint.2018.12.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/14/2018] [Accepted: 12/04/2018] [Indexed: 05/04/2023]
Abstract
Oxidative stress in humans is affected by the health and nutritional status as well as exposure to external environmental factors. To evaluate the effects of external factors, an assessment of baseline levels as well as diurnal variations in oxidative stress status of healthy individuals is needed. In this study, we examined intra- and inter-individual variability of oxidative stress biomarkers (OSBs) of lipids (malondialdehyde [MDA] and four F2-isoprostane isomers, namely, 8-isoprostaglandinF2α [8-PGF2α], 11β-prostaglandinF2α [11-PGF2α], 15(R)-prostaglandinF2α [15-PGF2α], and 8-iso,15(R)-prostaglandinF2α [8,15-PGF2α]); proteins (o,o'-dityrosine [diY]); and DNA (8-hydroxy-2'-deoxyguanosine [8-OHdG]) in urine from healthy individuals. The significance of creatinine correction, which is typically used to account for urinary dilution, on OSB concentrations was evaluated. Analysis of 515 urine samples, collected longitudinally from 19 healthy individuals daily for over a month, showed inter-individual coefficient of variation (CV) in concentrations from 112% for MDA to 272% for 15-PGF2α. Intra-individual CV in concentrations ranged from 29% for 8-OHdG to 149% for 15-PGF2α. MDA was the most abundant OSB found in urine. The intra- and inter-individual variability in F2-isoprostane concentrations were higher than the values calculated for diY, 8-OHdG, and MDA. All seven OSB concentrations were significantly correlated with each other and with creatinine. Creatinine normalization of OSB concentrations improved predictability in OSB concentrations over time. Our results suggest that 8-OHdG, showing the highest ICC (0.96), yielded more reproducible measurements with a low CV, and is the most suitable biomarker of OSB in spot urine samples. The measured concentrations and diurnal variability in urinary OSB levels in healthy individuals reported in this study are useful as a benchmark for future toxicological and epidemiological studies.
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Affiliation(s)
- Maria-Pilar Martinez-Moral
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box. 509, Albany, NY 12201, United States of America; Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, NY 12201, United States of America
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box. 509, Albany, NY 12201, United States of America; Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, NY 12201, United States of America; Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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12
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Dong R, Chen J, Zheng J, Zhang M, Zhang H, Wu M, Li S, Chen B. The role of oxidative stress in cardiometabolic risk related to phthalate exposure in elderly diabetic patients from Shanghai. Environ Int 2018; 121:340-348. [PMID: 30243182 DOI: 10.1016/j.envint.2018.09.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/07/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
The effect of human exposure to phthalates and consequent contribution to the development of cardiometabolic health problems is unknown. However, oxidative stress has been established as playing an important role in the pathogenesis of cardiometabolic outcomes. In this study, we aimed to explore whether exposure to phthalate metabolites could induce cardiometabolic risk by increasing oxidative stress in a diabetic population from Shanghai. We collected paired blood and urine samples from a total of 300 volunteers, and measured 10 phthalate metabolites in urine and biomarkers of oxidative stress from serum including glucose and lipid levels, and liver and kidney damage. The insulin resistance (IR) risk was assessed by the surrogate indices including homeostasis model assessment-insulin resistance (HOMA-IR) and triglyceride glucose (TyG). We used multivariable linear regression to assess the association between phthalates and these physiological parameters. Mediation and modification analyses were performed to identify the role that oxidative stress played in the underlying mechanisms. The results showed that most of the determined phthalate metabolites were positively associated with HOMA-IR, 8‑hydroxy‑2'‑deoxyguanosine (8-OHDG), and malondialdehyde (MDA). In the mediation analysis, only γ‑glutamiltransferase (GGT) was found to be a significant mediator of the association between phthalates and TyG. In the modification analysis, exposure to phthalates strengthened the association between oxidative stress (MDA and 8-OHDG) and HOMA-IR. Our findings demonstrate that exposure to phthalates might be positively associated with elevated IR and oxidative stress. The direct participation (mediation effect) of GGT might play an important mechanism in promoting IR.
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Affiliation(s)
- RuiHua Dong
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
| | - JingSi Chen
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
| | - JianHeng Zheng
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China; Key Laboratory of State General Administration of Sport, Shanghai Research Institute of Sports Science, Shanghai 200030, People's Republic of China.
| | - MeiRu Zhang
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China; Environmental Health & Occupational Health Department, Shanghai Xuhui Center for Disease Control and Prevention, Shanghai 200030, People's Republic of China.
| | - Han Zhang
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
| | - Min Wu
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
| | - ShuGuang Li
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
| | - Bo Chen
- Key Laboratory of Public Health Safety of Ministry of Education, Collaborative Innovation Center of Social Risks Governance in Health, School of Public Health, Fudan University, Shanghai 200032, People's Republic of China.
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Hodovanets Y, Babintseva A, Agafonova L, Makarova O, Frunza A. URINARY MALONDIALDEHYDE AS A PREDICTIVE AND DIAGNOSTIC MARKER FOR NEONATAL ACUTE KIDNEY INJURY. Georgian Med News 2018:126-132. [PMID: 29905558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Newborns are especially prone to oxidative stress (OS). Many free radical-mediated diseases have been described in newborns including bronchopulmonary dysplasia, respiratory distress syndrome, encephalopathy, and kidney injury. Objective of this work was to determine predictive and diagnostic value of urinary malondialdehyde (UMDA) as a marker for acute kidney injury (AKI) in critically sick full-term newborns. 67 critically sick full-term neonates were enrolled in the study including 31 newborns with AKI (group I) and 36 newborns without AKI (group II). The control group included 40 healthy full-term neonates (group III). The level of UMDA was measured by means of the test based on the reaction of MDA to thiobarbituric acid. The mean and 95% confidence interval (CI) for UMDA was 12.7 (11.5; 13.9) µmol/l in group I, 10.2 (9.61; 10.8) µmol/l in group II, 9.01 (8.16; 9.93) µmol/l in group III (pI-II<0.05; pI-III<0.05; pII-III<0.05). ROC curve analysis showed that UMDA had AUC 0.80 (95% CI 0.68; 0.93, p=0.0014) for AKI. The optimum UMDA cut-point was 12.0µmol/l. For AKI sensitivity and specificity of UMDA were determined to be 68.2% (95% CI 45.1; 86.1%) and 85.7% (95% CI 69.7; 95.1%) respectively, with positive predictive value of 75.0% (95% CI 55.9; 87.6%), and negative predictive value of 81.1% (95% CI 69.7; 88.9%), positive likelihood ratio of 4.77 (95% CI 2.02; 11.3), and negative likelihood ratio of 0.37 (95% CI 0.20; 0.69). This data support studies to evaluate UMDA as an immediate biomarker for AKI in critically sick newborns. However, a larger study should be conducted to assess the diagnostic accuracy of other serum and urinary markers for OS and renal dysfunction, which would enable us to formulate a mathematical model for the prognosis and diagnosis of AKI in newborns.
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Affiliation(s)
- Y Hodovanets
- 1Higher State Educational Establishment of Ukraine "Bukovinian State Medical University", Department of Pediatrics, Neonatology and Perinatal Medicine; 2Department of Nursing and Higher Nursing Education, Chernivtsi; 3Neonatal Intensive Care Unit, Maternity Hospital №2 Chernivtsi, Ukraine
| | - A Babintseva
- 1Higher State Educational Establishment of Ukraine "Bukovinian State Medical University", Department of Pediatrics, Neonatology and Perinatal Medicine; 2Department of Nursing and Higher Nursing Education, Chernivtsi; 3Neonatal Intensive Care Unit, Maternity Hospital №2 Chernivtsi, Ukraine
| | - L Agafonova
- 1Higher State Educational Establishment of Ukraine "Bukovinian State Medical University", Department of Pediatrics, Neonatology and Perinatal Medicine; 2Department of Nursing and Higher Nursing Education, Chernivtsi; 3Neonatal Intensive Care Unit, Maternity Hospital №2 Chernivtsi, Ukraine
| | - O Makarova
- 1Higher State Educational Establishment of Ukraine "Bukovinian State Medical University", Department of Pediatrics, Neonatology and Perinatal Medicine; 2Department of Nursing and Higher Nursing Education, Chernivtsi; 3Neonatal Intensive Care Unit, Maternity Hospital №2 Chernivtsi, Ukraine
| | - A Frunza
- 1Higher State Educational Establishment of Ukraine "Bukovinian State Medical University", Department of Pediatrics, Neonatology and Perinatal Medicine; 2Department of Nursing and Higher Nursing Education, Chernivtsi; 3Neonatal Intensive Care Unit, Maternity Hospital №2 Chernivtsi, Ukraine
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14
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Bortey-Sam N, Ikenaka Y, Akoto O, Nakayama SMM, Asante KA, Baidoo E, Obirikorang C, Mizukawa H, Ishizuka M. Association between human exposure to heavy metals/metalloid and occurrences of respiratory diseases, lipid peroxidation and DNA damage in Kumasi, Ghana. Environ Pollut 2018; 235:163-170. [PMID: 29288929 DOI: 10.1016/j.envpol.2017.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 11/02/2017] [Accepted: 12/03/2017] [Indexed: 06/07/2023]
Abstract
Heavy metals and metalloids contamination in soils, water, food and livers of wild rats have been studied in Kumasi, Ghana and despite the estimated risks to residents, there is no epidemiological study to ascertain these projections. In addition, the World Health Organization and International Agency for Research on Cancer have reported an increase in respiratory diseases and cancers, in Ghana. The study's purpose was therefore to explore the potential associations between metal exposure and occurrences of respiratory diseases, lipid peroxidation and/or DNA damage to different age groups and sexes in Kumasi. Human urine was collected from the general population in urban and control sites in Kumasi and nine metals were measured in each sample. Results showed that although Zn was the most abundant total urinary As concentration was higher in 83% of samples compared to reference values. Urinary concentrations of metals, malondialdehyde (MDA) and 8-hydroxy-2-deoxy-guanosine (8-OHdG) were higher in urban sites compared to the control site. Based on the results obtained, there was no significant correlation between urinary metals and age. However, urinary Cd and MDA were highest in age groups 61-85 and 3-20 years, respectively. Significantly higher levels of urinary Co, As and Cd were detected in female participants. The study revealed that exposure to As was significantly associated with increased odds of asthma (odds ratio (OR) = 2.76; CI: 1.11-6.83) and tachycardia (OR = 3.93; CI: 1.01-15.4). Significant association was observed between urinary metals and MDA and 8-OHdG indicating possibility of lipid peroxidation and/or DNA damage in Kumasi residents.
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Affiliation(s)
- Nesta Bortey-Sam
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita Ku, Sapporo, 060-0818, Japan
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita Ku, Sapporo, 060-0818, Japan; Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Osei Akoto
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Shouta M M Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita Ku, Sapporo, 060-0818, Japan
| | - Kwadwo A Asante
- CSIR Water Research Institute, P. O. Box AH 38, Achimota, Accra, Ghana
| | - Elvis Baidoo
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Christian Obirikorang
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science & Technology, Kumasi, Ghana
| | - Hazuki Mizukawa
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita Ku, Sapporo, 060-0818, Japan
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita Ku, Sapporo, 060-0818, Japan.
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15
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Al-Saleh I, Al-Rouqi R, Elkhatib R, Abduljabbar M, Al-Rajudi T. Risk assessment of environmental exposure to heavy metals in mothers and their respective infants. Int J Hyg Environ Health 2017; 220:1252-1278. [PMID: 28869188 DOI: 10.1016/j.ijheh.2017.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/17/2022]
Abstract
Exposure to heavy metals can cause renal injury, which has been well documented in occupational exposure. Studies of low exposure in the general population, however, are still scarce, particularly for vulnerable populations such as mothers and young children. This study evaluated exposure to heavy metals, and biomarkers of renal function and oxidative stress in 944 lactating mothers and their infants and investigated the role of the interaction between heavy metals and oxidative stress in altering renal function. Mother and infant urine samples were analyzed to measure mercury (Hg), cadmium (Cd), and lead (Pb) concentrations for determining body-burden exposure; N-acetyl-β-d-glucosaminidase (NAG), α1-microglobulin (α1-MG), albumin (ALB), and creatinine (Cr) concentrations for determining early renal injury; and 8-hydroxy-2-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) concentrations for determining oxidative stress. The median concentrclearlyations in mothers presented as μg/g Cr (infants as μg/l) for Hg, Cd, and Pb were 0.695 (0.716), 0.322 (0.343), and 3.97 (5.306) respectively. The mothers and their infants had clearly been exposed to heavy metals and had levels higher than the reference values reported for the general populations of USA, Germany, and Canada. Multiple regression analyses clearly demonstrated associations between urinary heavy metals in quartiles and several renal and oxidative biomarkers in mothers and to a lesser extent their infants. ß coefficients for urinary excretions of MDA, 8-OHdG, ALB, α1-MG, NAG, and Cr in mothers were high in the highest quartile of Hg (1.183-51.29μg/g Cr or 1.732-106.95μg/l), Cd (0.565-765.776μg/g Cr or 0.785-1347.0μg/l), and Pb (6.606-83.937μg/g Cr or 9.459-80.826μg/l), except Pb was not associated with ALB. Infants in the highest Pb quartile (9.293-263.098μg/l) had the highest ß coefficients of urinary excretion of MDA, 8-OHdG, ALB, NAG, and Cr. Significant increasing trend in biomarkers across the quartiles of the three metals was seen in both mothers and infants (ptrend <0.001). A receiver operating characteristic analysis supported the predictive abilities of the four renal biomarkers in discriminating between low versus high metal quartiles. The interaction between heavy metals and oxidative stress contributed to the high excretions of renal biomarkers, but the mechanism remains unclear. These findings add to the limited evidence that low exposure to heavy metals in the general population is associated with alterations in renal function that could eventually progress to renal damage if exposure continues and that children are more susceptible due to the immaturity of their body organs.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, P.O. Box: 3354, Riyadh 11211, Saudi Arabia.
| | - Reem Al-Rouqi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, P.O. Box: 3354, Riyadh 11211, Saudi Arabia
| | - Rola Elkhatib
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, P.O. Box: 3354, Riyadh 11211, Saudi Arabia
| | - Mai Abduljabbar
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, P.O. Box: 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajudi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, P.O. Box: 3354, Riyadh 11211, Saudi Arabia
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Lee MR, Lim YH, Lee BE, Hong YC. Blood mercury concentrations are associated with decline in liver function in an elderly population: a panel study. Environ Health 2017; 16:17. [PMID: 28257627 PMCID: PMC5336614 DOI: 10.1186/s12940-017-0228-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 02/28/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Mercury is a toxic heavy metal and is known to affect many diseases. However, few studies have examined the effects of mercury exposure on liver function in the general population. We examined the association between blood mercury concentrations and liver enzyme levels in the elderly. METHODS We included 560 elderly participants (60 years or older) who were recruited from 2008 to 2010 and followed up to 2014. Subjects visited a community welfare center and underwent a medical examination and measurement of mercury levels up to five times. Analyses using generalized estimating equations model were performed after adjusting for age, sex, education, overweight, alcohol consumption, smoking, regular exercise, high-density lipoproteins cholesterol, and total calorie intake. Additionally, we estimated interaction effects of alcohol consumption with mercury and mediation effect of oxidative stress in the relationship between mercury levels and liver function. RESULTS The geometric mean (95% confidence interval (CI)) of blood mercury concentrations was 2.81 μg/L (2.73, 2.89). Significant relationships were observed between blood mercury concentrations and the level of liver enzymes, including aspartate aminotransferase (AST), alanine aminotransferase (ALT), and gamma glutamyl transferase (GGT), after adjusting for potential confounders (P < 0.05). The odds ratios of having abnormal ALT levels were statistically significant in the highest mercury quartile compared to those with the lowest quartile. Particularly, regular alcohol drinkers showed greater effect estimates of mercury on the liver function than non-drinkers groups. There was no mediation effect of oxidative stress in the relationship between blood mercury concentrations and liver function. CONCLUSIONS Our results suggest that blood mercury levels are associated with elevated liver enzymes and interact with alcohol consumption for the association in the elderly.
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Affiliation(s)
- Mee-Ri Lee
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Youn-Hee Lim
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
- Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Bo-Eun Lee
- Environmental Health Research Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, Republic of Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
- Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
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Abstract
BACKGROUND To verify oxidative stress as a possible mechanism that establishes a relationship between exposure to bisphenol A (BPA) and adverse health outcomes in the elderly Korean population, we evaluated the relation between visit-to-visit variations in urinary BPA and oxidative stress biomarker. METHODS To assess the relation between BPA and urinary malondialdehyde (MDA) as an oxidative stress biomarker, we used a mixed effect model after controlling for age, sex, BMI, drinking status, exercise, urinary cotinine level, PM10 on lag day 2, and mean temperature and dew point on the day. The relation between exposure to BPA and MDA level by sex of participants and polymorphisms of oxidative stress-related genes (COX2, EPHX1, HSP70-hom, PON1, eNOS, CAT, DRD2, SOD2, and MPO) was also evaluated. RESULTS A significant association was found for BPA with MDA in both male and female elderly participants (male, β = 0.19 and p = 0.0003; female, β = 0.18 and p < .0001; and total, β = 0.18 and p < .0001). Furthermore, the association of BPA with MDA was found regardless of any genotype of the nine oxidative stress-related genes. CONCLUSIONS The results of our study suggest a strong association of BPA with oxidative stress, not related with sex and oxidative stress-related gene polymorphisms.
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Affiliation(s)
- Jin Hee Kim
- Department of Integrative Bioscience & Biotechnology, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, Republic of Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul, Republic of Korea
- Institute of Environmental Medicine, Seoul National University Medical Research Center, 28 Yongon-dong, Chongno-gu, Seoul, Republic of Korea
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18
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Kim JA, Noh SR, Cheong HK, Ha M, Eom SY, Kim H, Park MS, Chu Y, Lee SH, Choi K. Urinary oxidative stress biomarkers among local residents measured 6years after the Hebei Spirit oil spill. Sci Total Environ 2017; 580:946-952. [PMID: 27993476 DOI: 10.1016/j.scitotenv.2016.12.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 12/06/2016] [Accepted: 12/06/2016] [Indexed: 06/06/2023]
Abstract
In December 2007, the Hebei Spirit oil spill occurred on the west coast of South Korea. Association between crude oil exposure and the levels of urinary oxidative stress biomarkers was reported among the local residents, 1.5years after the accident. The aim of this study was to follow-up possible longer-term effects of the oil spill among the residents near the oil spill. Six years after the accident, urinary oxidative stress biomarkers of the residents were associated with surrogates of oil exposure. The target subjects were divided into two groups based on the distance of their residence to the spill site, i.e., those near the spill site ('Near' group, n=476), and those far from the spill ('Far' group, n=152). A questionnaire was administered by trained interviewers or self-reporting, and demographic information and other parameters of the participants, such as socioeconomic status, smoking and drinking behaviors, disease history, and duration of clean-up activities after the spill, were collected. The participants' levels of 8-hydroxy-2-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) in 12 h urine samples were measured as indicators of oxidative DNA damage and lipid peroxidation, respectively. A general linear model was used for statistical analysis. Urinary MDA and 8-OHdG levels measured from 'Near' group, i.e., geometric mean of 2.19μmol/g creatinine, and 5.41μg/g creatinine, respectively, were higher than those of 'Far' group. Especially, urinary 8-OHdG levels in the 'Near' group were significantly higher than those of 'Far' after adjusting relevant covariates. In addition, the duration of clean-up activities showed a significant association with both urinary 8-OHdG and MDA levels. Even 6years after the oil spill, positive associations between oxidative stress biomarkers and surrogates of oil exposure were evident. While the present study design lacks biomarkers of exposure, the results of this study suggest that the consequences of oil pollution may last for years.
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Affiliation(s)
- Jung-Ah Kim
- School of Public Health, Seoul National University, Seoul 08826, Republic of Korea; Taean Environmental Health Center, Taean 32148, Republic of Korea
| | - Su Ryeon Noh
- School of Public Health, Seoul National University, Seoul 08826, Republic of Korea
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan 31116, Republic of Korea
| | - Sang-Yong Eom
- Department of Preventive Medicine, Medical Research Institute, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Heon Kim
- Department of Preventive Medicine, Medical Research Institute, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Myung-Sook Park
- Taean Environmental Health Center, Taean 32148, Republic of Korea
| | - Yeonhee Chu
- Taean Environmental Health Center, Taean 32148, Republic of Korea
| | - Seung-Hwa Lee
- Taean Environmental Health Center, Taean 32148, Republic of Korea
| | - Kyungho Choi
- School of Public Health, Seoul National University, Seoul 08826, Republic of Korea.
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Nascimento SN, Göethel G, Baierle M, Barth A, Brucker N, Charão MF, Moro AM, Gauer B, Sauer E, Durgante J, Arbo MD, Thiesen FV, Pierre TDS, Gioda A, Moresco R, Garcia SC. Environmental exposure and effects on health of children from a tobacco-producing region. Environ Sci Pollut Res Int 2017; 24:2851-2865. [PMID: 27838906 DOI: 10.1007/s11356-016-8071-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/07/2016] [Indexed: 06/06/2023]
Abstract
Children may be environmentally exposed to several hazards. In order to evaluate the health of children living in a tobacco-producing region, different biomarkers of exposure and effect, as well as hematological parameters, were evaluated. Biomarkers of exposure to the following xenobiotics were assessed: pesticides, nicotine, toxic elements, and organic solvents. Oxidative damage markers malondialdehyde (MDA) and protein carbonyls (PCO), vitamin C, microalbuminuria (mALB) levels, and N-acetyl-β-D-glucosaminidase (NAG) activity were also evaluated. Peripheral blood samples and urine were collected from 40 children (6-12 years), at two different crop periods: in the beginning of pesticide applications (period 1) and in the leaf harvest (period 2). The Wilcoxon signed-rank test for paired data was used to evaluate the differences between both periods. Biomarkers of exposure cotinine in urine and blood chromium (Cr) levels were increased in period 1 when compared to period 2. Moreover, a significant reduced plasmatic activity of butyrylcholinesterase (BuChE) was observed in period 2 in relation to period 1. Blood Cr levels were above the recommended by WHO in both evaluations. The biomarkers MDA and PCO as well as the kidney dysfunction biomarker, mALB, presented levels significantly increased in period 1. Additionally, decreased lymphocytes and increased basophils were also observed. Cotinine was positively associated with PCO, and Cr was positively associated with PCO and MDA. The increased Cr levels were associated with decreased lymphocytes and increased basophils. Our findings demonstrate that children environmentally exposed to xenobiotics in rural area may present early kidney dysfunction, hematological alterations, as well as lipid and protein damages, associated with co-exposure to different xenobiotics involved in tobacco cultivation.
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Affiliation(s)
- Sabrina N Nascimento
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Gabriela Göethel
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Marília Baierle
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Anelise Barth
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Natália Brucker
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Mariele F Charão
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Institute of Health Sciences, Feevale University, Novo Hamburgo, RS, Brazil
| | - Angela M Moro
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Bruna Gauer
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Elisa Sauer
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Juliano Durgante
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
| | - Marcelo D Arbo
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Flavia V Thiesen
- Faculty of Pharmacy, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Tatiana D Saint' Pierre
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ, Brazil
| | - Adriana Gioda
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro (PUC-Rio), Rio de Janeiro, RJ, Brazil
| | - Rafael Moresco
- Laboratory of Clinical Biochemistry, Department of Clinical and Toxicological Analyses, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Solange Cristina Garcia
- Laboratory of Toxicology (LATOX), Department of Analyses, Faculty of Pharmacy, Federal University of Rio Grande do Sul (UFRGS), Avenida Ipiranga 2752, Santa Cecília, Porto Alegre, RS, CEP: 90610-000, Brazil.
- Post-Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
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20
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Lerro CC, Beane Freeman LE, Portengen L, Kang D, Lee K, Blair A, Lynch CF, Bakke B, De Roos AJ, Vermeulen RCH. A longitudinal study of atrazine and 2,4-D exposure and oxidative stress markers among iowa corn farmers. Environ Mol Mutagen 2017; 58:30-38. [PMID: 28116766 PMCID: PMC5763550 DOI: 10.1002/em.22069] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 05/06/2023]
Abstract
Reactive oxygen species, potentially formed through environmental exposures, can overwhelm an organism's antioxidant capabilities resulting in oxidative stress. Long-term oxidative stress is linked with chronic diseases. Pesticide exposures have been shown to cause oxidative stress in vivo. We utilized a longitudinal study of corn farmers and non-farming controls in Iowa to examine the impact of exposure to the widely used herbicides atrazine and 2,4-dichlorophenoxyacetic acid (2,4-D) on markers of oxidative stress. 225 urine samples were collected during five agricultural time periods (pre-planting, planting, growing, harvest, off-season) for 30 farmers who applied pesticides occupationally and 10 controls who did not; all were non-smoking men ages 40-60. Atrazine mercapturate (atrazine metabolite), 2,4-D, and oxidative stress markers (malondialdehyde [MDA], 8-hydroxy-2'-deoxyguanosine [8-OHdG], and 8-isoprostaglandin-F2α [8-isoPGF]) were measured in urine. We calculated β estimates and 95% confidence intervals (95%CI) for each pesticide-oxidative stress marker combination using multivariate linear mixed-effect models for repeated measures. Farmers had higher urinary atrazine mercapturate and 2,4-D levels compared with controls. In regression models, after natural log transformation, 2,4-D was associated with elevated levels of 8-OHdG (β = 0.066, 95%CI = 0.008-0.124) and 8-isoPGF (β = 0.088, 95%CI = 0.004-0.172). 2,4-D may be associated with oxidative stress because of modest increases in 8-OHdG, a marker of oxidative DNA damage, and 8-isoPGF, a product of lipoprotein peroxidation, with recent 2,4-D exposure. Future studies should investigate the role of 2,4-D-induced oxidative stress in the pathogenesis of human diseases. Environ. Mol. Mutagen. 58:30-38, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Catherine C Lerro
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Laura E Beane Freeman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Lützen Portengen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, 3508, The Netherlands
| | - Daehee Kang
- Seoul National University, Seoul, South Korea
| | - Kyoungho Lee
- Samsung Health Research Institute, Samsung Electronics, Yongin-City, 446-711, South Korea
| | - Aaron Blair
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Charles F Lynch
- Department of Epidemiology, University of Iowa, Iowa City, Iowa
| | - Berit Bakke
- Department of Occupational Health Surveillance, National Institute of Occupational Health, Oslo, Norway
| | - Anneclaire J De Roos
- Department of Environmental and Occupational Health, Drexel University Dornsife School of Public Health, Philadelphia, Pennsylvania
| | - Roel C H Vermeulen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, 3508, The Netherlands
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands
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21
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Lu SY, Li YX, Zhang JQ, Zhang T, Liu GH, Huang MZ, Li X, Ruan JJ, Kannan K, Qiu RL. Associations between polycyclic aromatic hydrocarbon (PAH) exposure and oxidative stress in people living near e-waste recycling facilities in China. Environ Int 2016; 94:161-169. [PMID: 27258657 DOI: 10.1016/j.envint.2016.05.021] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/19/2016] [Accepted: 05/20/2016] [Indexed: 06/05/2023]
Abstract
Emission of polycyclic aromatic hydrocarbons (PAHs) from e-waste recycling activities in China is known. However, little is known on the association between PAH exposure and oxidative damage to DNA and lipid content in people living near e-waste dismantling sites. In this study, ten hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) and two biomarkers [8-hydroxy-2'-deoxyguanosine (8-OHdG) and malondialdehyde (MDA)] of oxidative stress were investigated in urine samples collected from people living in and around e-waste dismantling facilities, and in reference population from rural and urban areas in China. The urinary levels of ∑10OH-PAHs determined in e-waste recycling area (GM: 25.4μg/g Cre) were significantly higher (p<0.05) than those found in both rural (11.7μg/g Cre) and urban (10.9μg/g Cre) reference areas. The occupationally exposed e-waste workers (36.6μg/g Cre) showed significantly higher (p<0.01) urinary Σ10OH-PAHs concentrations than non-occupationally exposed people (23.2μg/g Cre) living in the e-waste recycling site. The differences in urinary Σ10OH-PAHs levels between smokers (23.4μg/g Cre) and non-smokers (24.7μg/g Cre) were not significant (p>0.05) in e-waste dismantling sites, while these differences were significant (p<0.05) in rural and urban reference areas; this indicated that smoking is not associated with elevated levels of PAH exposure in e-waste dismantling site. Furthermore, we found that urinary concentrations of Σ10OH-PAHs and individual OH-PAHs were significantly associated with elevated 8-OHdG, in samples collected from e-waste dismantling site; the levels of urinary 1-hydroxypyrene (1-PYR) (r=0.284, p<0.01) was significantly positively associated with MDA. Our results indicate that the exposure to PAHs at the e-waste dismantling site may have an effect on oxidative damage to DNA among selected participants, but this needs to be validated in large studies.
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Affiliation(s)
- Shao-You Lu
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China; Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, PR China
| | - Yan-Xi Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Jian-Qing Zhang
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, PR China
| | - Tao Zhang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Gui-Hua Liu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, PR China
| | - Ming-Zhi Huang
- School of Geography and Planning, Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Xiao Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Ju-Jun Ruan
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Kurunthachalam Kannan
- Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Albany, NY 12201, USA
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, PR China.
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22
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Moniuszko-Malinowska A, Łuczaj W, Jarocka-Karpowicz I, Pancewicz S, Zajkowska J, Andrisic L, Zarkovic N, Skrzydlewska E. Lipid peroxidation in the pathogenesis of neuroborreliosis. Free Radic Biol Med 2016; 96:255-63. [PMID: 27140232 DOI: 10.1016/j.freeradbiomed.2016.04.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 04/05/2016] [Accepted: 04/26/2016] [Indexed: 12/11/2022]
Abstract
This study analyzed the onset of lipid peroxidation (LPO) in neuroborreliosis and the effects of ceftriaxone therapy on LPO. Twenty-two patients with early neuroborreliosis and 22 healthy subjects were studied. LPO in the cerebrospinal fluid (CSF), as well as the plasma and urine was estimated by the levels of reactive aldehydes: 4-hydroxynonenal (4-HNE), 4-hydroxyhexenal, malondialdehyde, and 4-oxononenal, F2-isoprostanes and A4/J4-neuroprostanes (NPs). The plasma level of 4-HNE-protein adducts arachidonic acid (AA), docosahexaenoic acid (DHA) and vitamin E was determined. Additionally, enzymatic activities of phospholipase A2 (PLA2), platelet-activating factor acetylhydrolase (PAF-AH) and glutathione peroxidase (GSH-Px) were determined. A decrease of AA, DHA levels and GSH-Px activity in plasma was associated with a significant increase of aldehydes in the CSF, plasma and urine. Similarly, the increase of F2-isoprostanes and NPs in the CSF and plasma was associated with the decreased activity of PLA2 and PAF-AH. Ceftriaxone therapy cured patients and reduced the levels of F2-isoprostanes, NPs and reactive aldehydes. However, the activities of PLA2 and PAF-AH increased. Pathophysiological association of neuroborreliosis with systemic LPO was revealed. Effective antibiotic therapy attenuated LPO. Biomarkers of LPO could be useful to monitor the onset of neuroborreliosis and show the effectiveness of pharmacotherapy.
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Affiliation(s)
- Anna Moniuszko-Malinowska
- Department of Infectious Diseases and Neuroinfection, Medical University of Bialystok, Żurawia 14, 15-540 Bialystok, Poland
| | - Wojciech Łuczaj
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland.
| | - Iwona Jarocka-Karpowicz
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland
| | - Sławomir Pancewicz
- Department of Infectious Diseases and Neuroinfection, Medical University of Bialystok, Żurawia 14, 15-540 Bialystok, Poland
| | - Joanna Zajkowska
- Department of Infectious Diseases and Neuroinfection, Medical University of Bialystok, Żurawia 14, 15-540 Bialystok, Poland
| | | | | | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, Mickiewicza 2d, 15-222 Bialystok, Poland
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Pei L, Solis G, Nguyen MTX, Kamat N, Magenheimer L, Zhuo M, Li J, Curry J, McDonough AA, Fields TA, Welch WJ, Yu ASL. Paracellular epithelial sodium transport maximizes energy efficiency in the kidney. J Clin Invest 2016; 126:2509-18. [PMID: 27214555 DOI: 10.1172/jci83942] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 04/05/2016] [Indexed: 12/12/2022] Open
Abstract
Efficient oxygen utilization in the kidney may be supported by paracellular epithelial transport, a form of passive diffusion that is driven by preexisting transepithelial electrochemical gradients. Claudins are tight-junction transmembrane proteins that act as paracellular ion channels in epithelial cells. In the proximal tubule (PT) of the kidney, claudin-2 mediates paracellular sodium reabsorption. Here, we used murine models to investigate the role of claudin-2 in maintaining energy efficiency in the kidney. We found that claudin-2-null mice conserve sodium to the same extent as WT mice, even during profound dietary sodium depletion, as a result of the upregulation of transcellular Na-K-2Cl transport activity in the thick ascending limb of Henle. We hypothesized that shifting sodium transport to transcellular pathways would lead to increased whole-kidney oxygen consumption. Indeed, compared with control animals, oxygen consumption in the kidneys of claudin-2-null mice was markedly increased, resulting in medullary hypoxia. Furthermore, tubular injury in kidneys subjected to bilateral renal ischemia-reperfusion injury was more severe in the absence of claudin-2. Our results indicate that paracellular transport in the PT is required for efficient utilization of oxygen in the service of sodium transport. We speculate that paracellular permeability may have evolved as a general strategy in epithelial tissues to maximize energy efficiency.
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Zhang YX, Yang X, Zou P, Du PF, Wang J, Jin F, Jin MJ, She YX. Nonylphenol Toxicity Evaluation and Discovery of Biomarkers in Rat Urine by a Metabolomics Strategy through HPLC-QTOF-MS. Int J Environ Res Public Health 2016; 13:ijerph13050501. [PMID: 27187439 PMCID: PMC4881126 DOI: 10.3390/ijerph13050501] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/08/2016] [Accepted: 05/10/2016] [Indexed: 02/02/2023]
Abstract
Nonylphenol (NP) was quantified using liquid chromatography tandem mass spectrometry (LC-MS/MS) in the urine and plasma of rats treated with 0, 50, and 250 mg/kg/day of NP for four consecutive days. A urinary metabolomic strategy was originally implemented by high performance liquid chromatography time of flight mass spectrometry (HPLC-QTOF-MS) to explore the toxicological effects of NP and determine the overall alterations in the metabolite profiles so as to find potential biomarkers. It is essential to point out that from the observation, the metabolic data were clearly clustered and separated for the three groups. To further identify differentiated metabolites, multivariate analysis, including principal component analysis (PCA), orthogonal partial least-squares discriminant analysis (OPLS-DA), high-resolution MS/MS analysis, as well as searches of Metlin and Massbank databases, were conducted on a series of metabolites between the control and dose groups. Finally, five metabolites, including glycine, glycerophosphocholine, 5-hydroxytryptamine, malonaldehyde (showing an upward trend), and tryptophan (showing a downward trend), were identified as the potential urinary biomarkers of NP-induced toxicity. In order to validate the reliability of these potential biomarkers, an independent validation was performed by using the multiple reaction monitoring (MRM)-based targeted approach. The oxidative stress reflected by urinary 8-oxo-deoxyguanosine (8-oxodG) levels was elevated in individuals highly exposed to NP, supporting the hypothesis that mitochondrial dysfunction was a result of xenoestrogen accumulation. This study reveals a promising approach to find biomarkers to assist researchers in monitoring NP.
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Affiliation(s)
- Yan-Xin Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Pan Zou
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Peng-Fei Du
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Key Laboratory of Agro-Product Safety and Quality, Ministry of Agriculture, Beijing 100081, China.
| | - Jing Wang
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Key Laboratory of Agro-Product Safety and Quality, Ministry of Agriculture, Beijing 100081, China.
| | - Fen Jin
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Key Laboratory of Agro-Product Safety and Quality, Ministry of Agriculture, Beijing 100081, China.
| | - Mao-Jun Jin
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Key Laboratory of Agro-Product Safety and Quality, Ministry of Agriculture, Beijing 100081, China.
| | - Yong-Xin She
- Key Laboratory of Agro-Product Quality and Safety, Institute of Quality Standard & Testing Technology for Agro-Product, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Key Laboratory of Agro-Product Safety and Quality, Ministry of Agriculture, Beijing 100081, China.
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25
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Kim BH, Lee ES, Choi R, Nawaboot J, Lee MY, Lee EY, Kim HS, Chung CH. Protective Effects of Curcumin on Renal Oxidative Stress and Lipid Metabolism in a Rat Model of Type 2 Diabetic Nephropathy. Yonsei Med J 2016; 57:664-73. [PMID: 26996567 PMCID: PMC4800357 DOI: 10.3349/ymj.2016.57.3.664] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 07/22/2015] [Accepted: 08/22/2015] [Indexed: 12/19/2022] Open
Abstract
PURPOSE Diabetic nephropathy is a serious complication of type 2 diabetes mellitus, and delaying the development of diabetic nephropathy in patients with diabetes mellitus is very important. In this study, we investigated inflammation, oxidative stress, and lipid metabolism to assess whether curcumin ameliorates diabetic nephropathy. MATERIALS AND METHODS Animals were divided into three groups: Long-Evans-Tokushima-Otsuka rats for normal controls, Otsuka-Long-Evans-Tokushima Fatty (OLETF) rats for the diabetic group, and curcumin-treated (100 mg/kg/day) OLETF rats. We measured body and epididymal fat weights, and examined plasma glucose, adiponectin, and lipid profiles at 45 weeks. To confirm renal damage, we measured albumin-creatinine ratio, superoxide dismutase (SOD), and malondialdehyde (MDA) in urine samples. Glomerular basement membrane thickness and slit pore density were evaluated in the renal cortex tissue of rats. Furthermore, we conducted adenosine monophosphate-activated protein kinase (AMPK) signaling and oxidative stress-related nuclear factor (erythroid-derived 2)-like 2 (Nrf2) signaling to investigate mechanisms of lipotoxicity in kidneys. RESULTS Curcumin ameliorated albuminuria, pathophysiologic changes on the glomerulus, urinary MDA, and urinary SOD related with elevated Nrf2 signaling, as well as serum lipid-related index and ectopic lipid accumulation through activation of AMPK signaling. CONCLUSION Collectively, these findings indicate that curcumin exerts renoprotective effects by inhibiting renal lipid accumulation and oxidative stress through AMPK and Nrf2 signaling pathway.
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Affiliation(s)
- Bo Hwan Kim
- College of Nursing, Gachon University, Incheon, Korea
| | - Eun Soo Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Ran Choi
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jarinyaporn Nawaboot
- Division of Pharmacology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, Bangkok, Thailand
| | - Mi Young Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Eun Young Lee
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Hyeon Soo Kim
- Department of Anatomy, Korea University College of Medicine, Seoul, Korea
| | - Choon Hee Chung
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
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Lin Y, Qiu X, Yu N, Yang Q, Araujo JA, Zhu Y. Urinary Metabolites of Polycyclic Aromatic Hydrocarbons and the Association with Lipid Peroxidation: A Biomarker-Based Study between Los Angeles and Beijing. Environ Sci Technol 2016; 50:3738-45. [PMID: 26913796 PMCID: PMC6057150 DOI: 10.1021/acs.est.5b04629] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Air pollution is among the top threats to human health in China. As air toxicants, polycyclic aromatic hydrocarbons (PAHs) could bring significant risks to population; however, the exposure to PAHs in China and its health impact are not fully understood. In 2012, a summer exchange program allowed 10 students to travel from Los Angeles to Beijing and stay there for 10 weeks. Based on the program, this study investigated the difference in urinary concentration of 12 hydroxylated-PAHs (Σ12OH-PAHs) and malondialdehyde (MDA) between the two cities. The median concentration of Σ12OH-PAHs in Beijing (14.1 μg g(-1) creatinine) was significantly higher than that in Los Angeles (5.78 μg g(-1) creatinine), indicating a higher exposure in Beijing. The ratios of homogeneous OH-PAHs (e.g., 1-/2-OH-NAP) changed significantly between the two cities (p < 0.01), which might suggest a potential alteration in metabolism subsequent to exposure. A significant association between Σ12OH-PAHs and MDA (p < 0.01) was observed, with the association varying between the two cities. This study suggests that exposure to PAHs might be linked to metabolism alteration and calls for future studies to investigate the role this possible alteration played in the health effects of PAHs exposure.
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Affiliation(s)
- Yan Lin
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California 90095, United States
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, P. R. China
| | - Xinghua Qiu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, P. R. China
- Corresponding Authors: ,
| | - Nu Yu
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Qiaoyun Yang
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing 100871, P. R. China
| | - Jesus A. Araujo
- Division of Cardiology, Department of Medicine, School of Medicine, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Yifang Zhu
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California 90095, United States
- Corresponding Authors: ,
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Noh SR, Cheong HK, Ha M, Eom SY, Kim H, Choi YH, Paek D. Oxidative stress biomarkers in long-term participants in clean-up work after the Hebei Spirit oil spill. Sci Total Environ 2015; 515-516:207-214. [PMID: 25727518 DOI: 10.1016/j.scitotenv.2015.02.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 02/08/2015] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The oil tanker Hebei Spirit spilled 12,547kL of oil near the western coastline of Korea on December 7, 2007. We aimed to investigate the relationship between oil spill exposure and oxidative stress in residents living near the affected area. METHODS Study subjects were 671 residents who participated in a health examination between February and September 2009. As surrogates for oil spill exposure, we used the total duration of clean-up work and levels of urinary metabolites of polycyclic aromatic hydrocarbons (PAHs), 1-hydroxypyrene (1-OHP) and 2-naphthol (2-NAPH). Oxidative stress was measured using urinary levels of malondialdehyde (MDA) and 8-hydroxy-2'-deoxyguanosine (8-OHdG), indicators of lipid peroxidation and oxidative DNA damage, respectively. RESULTS Levels of oxidative stress biomarkers were significantly increased with longer involvement in clean-up work over one year after the Hebei Spirit oil spill (MDA, p-trend<0.0001; 8-OHdG, p-trend<0.0001). As more time elapsed since the last involvement in clean-up, the total duration of clean-up work participation and levels of PAH metabolites (1-OHP and 2-NAPH), as well as levels of the oxidative stress biomarkers (MDA and 8-OHdG) decreased further. The level of 1-OHP had a significant positive correlation with the total duration of clean-up work involvement, with a higher level found in those who participated in clean-up for >100 days. Increasing levels of 1-OHP were significantly associated with increased MDA and 8-OHdG after adjusting for covariates, while the strength of association weakened as time passed since the last participation in clean-up work. The significance of the association was maintained for up to 12 months after the last clean-up work. CONCLUSIONS The results suggested that oil exposure from prolonged clean-up activity likely induced oxidative stress in clean-up participants up to at least one year after the last exposure.
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Affiliation(s)
- Su Ryeon Noh
- Taean Environmental Health Center, Taean, Republic of Korea; Department of Environmental Health, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea.
| | - Sang-Yong Eom
- Department of Preventive Medicine, Medical Research Institute, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Heon Kim
- Department of Preventive Medicine, Medical Research Institute, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | | | - Domyung Paek
- Department of Environmental Health, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
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Lin W, Zhu T, Xue T, Peng W, Brunekreef B, Gehring U, Huang W, Hu M, Zhang Y, Tang X. Association between changes in exposure to air pollution and biomarkers of oxidative stress in children before and during the Beijing Olympics. Am J Epidemiol 2015; 181:575-83. [PMID: 25770981 DOI: 10.1093/aje/kwu327] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 10/23/2014] [Indexed: 11/14/2022] Open
Abstract
It is not known whether exposure to air pollutants causes systemic oxidative stress in children. We investigated the association between exposure to air pollution and biomarkers of oxidative stress in relation to a governmental air quality intervention implemented during the 2008 Beijing Olympic Games. We studied 36 schoolchildren during 5 time periods before and during the Olympic Games in Beijing (June 2007-September 2008). The oxidative stress biomarkers 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) and malondialdehyde were measured in urine samples collected daily during each period. Generalized estimating equations were used to examine the relationship between repeated biomarker measurements and ambient air pollutant levels. During the Olympic intervention period, substantial reductions in air pollution (-19% to -72%), urinary 8-oxodG concentrations (-37.4%; 95% confidence interval: -53.5, -15.7), and urinary malondialdehyde concentrations (-25.3%; 95% confidence interval: -34.3, -15.1) were found. Malondialdehyde and 8-oxodG were significantly associated with concentrations of black carbon, fine particulate matter with an aerodynamic with diameter less than 2.5 μm, sulfur dioxide, nitrogen dioxide, and carbon monoxide. Biomarker changes per each interquartile-range increase in pollutants were largest at lag 0 or lag 1. In a 2-pollutant model, the most robust associations were for black carbon. These findings suggest that exposure to black carbon leads to systemic oxidative stress in children.
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Yang Q, Qiu X, Li R, Ma J, Li K, Li G. Polycyclic aromatic hydrocarbon (PAH) exposure and oxidative stress for a rural population from the North China Plain. Environ Sci Pollut Res Int 2015; 22:1760-9. [PMID: 25015715 DOI: 10.1007/s11356-014-3284-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 07/03/2014] [Indexed: 05/10/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) belong to a class of ubiquitous pollutants and are possibly associated with adverse health effects. In this study, we aimed to assess PAH exposure by measuring the hydroxylated metabolites (hydroxy-PAHs) in urine samples of a rural population from the North China Plain and to explore the possible associations between PAH exposure and oxidative stress indicated by urinary malondialdehyde (MDA) and 8-hydroxy-2′-deoxyguanosine (8-OHdG). High levels of urinary hydroxy-PAHs were observed, with the geometric mean concentrations of 0.57, 2.2, 5.0, 7.0, and 16.6 μg g−1 creatinine for 1-hydroxypyrene, hydroxyphenanthrenes, hydroxyfluorenes, hydroxybiphenyls, and hydroxynaphthalenes, respectively. Particularly in the winter season, the exposures were 2.3–6.0-fold of those in the spring. Corresponding to PAH exposure, levels of urinary MDA were positively associated with hydroxy-PAHs after controlling for confounders in the linear regression models (p < 0.05). An estimation indicated 21.3–39.3 % increment of urinary MDA per one-fold increase of hydroxy-PAHs. In contrast, no significant correlation was found between urinary 8-OHdG and hydroxy-PAHs; alternatively, living at the e-waste recycling site was found a significant factor on this oxidative DNA damage. These results provide evidence on high PAH exposure and the induction of oxidative stress on lipid peroxidation for this rural population.
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Gać P, Pawlas N, Poręba R, Poręba M, Markiewicz-Górka I, Januszewska L, Olszowy Z, Pawlas K. Interaction between blood selenium concentration and a levels of oxidative stress and antioxidative capacity in healthy children. Environ Toxicol Pharmacol 2015; 39:137-144. [PMID: 25499791 DOI: 10.1016/j.etap.2014.11.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 11/16/2014] [Accepted: 11/21/2014] [Indexed: 06/04/2023]
Abstract
The study aimed at defining the relationship between blood selenium concentration (Se-B) and levels of oxidative stress and antioxidative capacity in healthy children. The studies were conducted on 337 children (mean age: 8.53±1.92 years). The groups of individuals with Se-B <1st quartile (group I, Se-B<70μg/L), with Se-B fitting the range of 1st quartile and median (group II, Se-B: 70-76.9μg/L), with Se-B between the median and 3rd quartile (group III, Se-B: 77-83.9μg/L) and those with Se-B above the 3rd quartile (group IV, Se-B≥84μg/L) were distinguished. Level of oxidative stress was defined using determination of urine malonyldialdehyde concentration (MDA) and urine 8-hydroxy-2-deoxyguanosine concentration (8-OHdg). Urine total antioxidant status (TAS) was determined. In group IV TAS was significantly higher than in groups I-III. A positive correlation was detected between Se-B and TAS. In healthy children an appropriately high Se-B seems to ensure higher total antioxidative status.
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Affiliation(s)
- Paweł Gać
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368 Wrocław, Poland
| | - Natalia Pawlas
- Institute of Occupational Medicine and Environmental Health in Sosnowiec, Kościelna 13, PL 41-200 Sosnowiec, Poland
| | - Rafał Poręba
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556 Wrocław, Poland.
| | - Małgorzata Poręba
- Department of Pathophysiology, Wroclaw Medical University, Marcinkowskiego 1, PL 50-368 Wrocław, Poland
| | - Iwona Markiewicz-Górka
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368 Wrocław, Poland
| | - Lidia Januszewska
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368 Wrocław, Poland
| | - Zofia Olszowy
- Institute of Occupational Medicine and Environmental Health in Sosnowiec, Kościelna 13, PL 41-200 Sosnowiec, Poland
| | - Krystyna Pawlas
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368 Wrocław, Poland; Institute of Occupational Medicine and Environmental Health in Sosnowiec, Kościelna 13, PL 41-200 Sosnowiec, Poland
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31
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Lin H, Ye S, Xu J, Wang W. The alpha-lipoic acid decreases urinary podocalyxin excretion in type 2 diabetics by inhibiting oxidative stress in vivo. J Diabetes Complications 2015; 29:64-7. [PMID: 25312599 DOI: 10.1016/j.jdiacomp.2014.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 09/17/2014] [Accepted: 09/20/2014] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To observe the effects of Alpha-lipoic acid (ALA) on oxidative stress (OS) in vivo and urinary podocalyxin (PCX, the glomerular podocyte marker protein) excretion in type 2 diabetics and explore its possible protective mechanisms on glomerular podocytes. METHODS Thirty-six type 2 diabetics were recruited as observation group and treated with ALA on the basis of initial therapy for six months, and 30 healthy subjects were selected as control group. FBG, HbA1c, serum glutathione peroxidase (SGSH-Px), superoxide dismutase (SSOD) activity, urinary malondialdehyde (UMDA), 8-hydroxy-deoxyguanosine (U8-OHdG), albumin (UALB), creatinine (UCr) and urinary PCX (UPCX) were determined at baseline and after six months' observation. RESULTS Compared with the control group, the ratios of UMDA/UCr (UMCR), U8-OHdG/UCr (U8CR), UALB/UCr (UACR) and UPCX/UCr (UPCR) increased markedly, SGSH-Px and SSOD decreased significantly in the diabetics (P<0.01); after sixth month treatment, the levels of UMCR, U8CR, UACR and UPCR reduced and SGSH-Px and SSOD increased markedly in the observation group (P<0.05) with no significant changes in FBG and HbA1c. UPCR had positive correlation with UACR, UMCR and U8CR (r=0.720, r=0.661, r=0.698, P<0.01), and negative correlation with SGSH-Px and SSOD in the diabetics (r=-0.608, r=-0.559, P<0.01). CONCLUSION ALA can provide some protection against glomerular podocyte injury in type 2 diabetics, which may be related partly to its effects in alleviating enhanced OS and strengthening antioxidant ability in vivo.
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Affiliation(s)
- Haiyan Lin
- Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China; Department of Internal Medicine, Maanshan Maternal and Child Health Care Center, Maanshan, Anhui, China
| | - Shandong Ye
- Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China.
| | - Jiang Xu
- Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China
| | - Wei Wang
- Department of Endocrinology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China
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32
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Galan-Chilet I, Tellez-Plaza M, Guallar E, De Marco G, Lopez-Izquierdo R, Gonzalez-Manzano I, Carmen Tormos M, Martin-Nuñez GM, Rojo-Martinez G, Saez GT, Martín-Escudero JC, Redon J, Javier Chaves F. Plasma selenium levels and oxidative stress biomarkers: a gene-environment interaction population-based study. Free Radic Biol Med 2014; 74:229-36. [PMID: 25017966 DOI: 10.1016/j.freeradbiomed.2014.07.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 06/25/2014] [Accepted: 07/03/2014] [Indexed: 12/21/2022]
Abstract
The role of selenium exposure in preventing chronic disease is controversial, especially in selenium-repleted populations. At high concentrations, selenium exposure may increase oxidative stress. Studies evaluating the interaction of genetic variation in genes involved in oxidative stress pathways and selenium are scarce. We evaluated the cross-sectional association of plasma selenium concentrations with oxidative stress levels, measured as oxidized to reduced glutathione ratio (GSSG/GSH), malondialdehyde (MDA), and 8-oxo-7,8-dihydroguanine (8-oxo-dG) in urine, and the interacting role of genetic variation in oxidative stress candidate genes, in a representative sample of 1445 men and women aged 18-85 years from Spain. The geometric mean of plasma selenium levels in the study sample was 84.76 µg/L. In fully adjusted models the geometric mean ratios for oxidative stress biomarker levels comparing the highest to the lowest quintiles of plasma selenium levels were 0.61 (0.50-0.76) for GSSG/GSH, 0.89 (0.79-1.00) for MDA, and 1.06 (0.96-1.18) for 8-oxo-dG. We observed nonlinear dose-responses of selenium exposure and oxidative stress biomarkers, with plasma selenium concentrations above ~110 μg/L being positively associated with 8-oxo-dG, but inversely associated with GSSG/GSH and MDA. In addition, we identified potential risk genotypes associated with increased levels of oxidative stress markers with high selenium levels. Our findings support that high selenium levels increase oxidative stress in some biological processes. More studies are needed to disentangle the complexity of selenium biology and the relevance of potential gene-selenium interactions in relation to health outcomes in human populations.
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Affiliation(s)
- Inmaculada Galan-Chilet
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain
| | - Maria Tellez-Plaza
- Area of Cardiometabolic and Renal Risk, Institute for Biomedical Research INCLIVA, Valencia, Spain; Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; Department of Medicine, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Griselda De Marco
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain
| | - Raul Lopez-Izquierdo
- Department of Internal Medicine, Hospital Universitario Rio Hortega, Valladolid, Spain
| | | | - M Carmen Tormos
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain
| | - Gracia M Martin-Nuñez
- Department of Endocrinology and Nutrition, Biomedical Research Institute of Malaga (IBIMA), Hospital Regional Universitario de Malaga, Malaga, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Barcelona, Spain
| | - Gemma Rojo-Martinez
- Department of Endocrinology and Nutrition, Biomedical Research Institute of Malaga (IBIMA), Hospital Regional Universitario de Malaga, Malaga, Spain
| | - Guillermo T Saez
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain; Department of Biochemistry and Molecular Biology, School of Medicine, University of Valencia, Spain; Service of Clinical Analysis-CDBI; Hospital General Universitario de Valencia (HGUV) Valencia, Spain
| | | | - Josep Redon
- Area of Cardiometabolic and Renal Risk, Institute for Biomedical Research INCLIVA, Valencia, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, Minister of Health, Madrid, Spain; Department of Internal Medicine, Hospital Clínico de Valencia, Valencia, Spain
| | - F Javier Chaves
- Genotyping and Genetic Diagnosis Unit, Institute for Biomedical Research INCLIVA, Valencia, Spain; CIBER of Diabetes and Associated Metabolic Diseases (CIBERDEM), Barcelona, Spain
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Ahn SY, Kim S, Kim DK, Park JH, Shin SJ, Lee SH, Choi BS, Lim CS, Kim S, Chin HJ. Urinary sodium excretion has positive correlation with activation of urinary renin angiotensin system and reactive oxygen species in hypertensive chronic kidney disease. J Korean Med Sci 2014; 29 Suppl 2:S123-30. [PMID: 25317016 PMCID: PMC4194282 DOI: 10.3346/jkms.2014.29.s2.s123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 06/26/2014] [Indexed: 01/13/2023] Open
Abstract
It is not well described the pathophysiology of renal injuries caused by a high salt intake in humans. The authors analyzed the relationship between the 24-hr urine sodium-to-creatinine ratio (24HUna/cr) and renal injury parameters such as urine angiotensinogen (uAGT/cr), monocyte chemoattractant peptide-1 (uMCP1/cr), and malondialdehyde-to-creatinine ratio (uMDA/cr) by using the data derived from 226 hypertensive chronic kidney disease patients. At baseline, the 24HUna/cr group or levels had a positive correlation with uAGT/cr and uMDA/cr adjusted for related factors (P<0.001 for each analysis). When we estimated uAGT/cr in the 24HUna/cr groups by ANCOVA, the uAGT/cr in patients with ≥200 mEq/g cr was higher than in patients with <100 mEq/g cr (708 [95% CI, 448-967] vs. 334 [95% CI, 184-483] pg/mg cr, P=0.014). Similarly, uMDA/cr was estimated as 0.17 (95% CI, 0.14-0.21) pM/mg cr in patients with <100 mEq/g cr and 0.27 (95% CI, 0.20-0.33) pM/mg cr in patients with ≥200 mEq/g cr (P=0.016). During the 16-week follow-up period, an increase in urinary sodium excretion predicted an increase in urinary angiotensinogen excretion. In conclusion, high salt intake increases renal renin-angiotensin-system (RAS) activation, primarily, and directly or indirectly affects the production of reactive oxygen species through renal RAS activation.
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Affiliation(s)
- Shin-Young Ahn
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Immunology, Seoul National University Postgraduate School, Seoul, Korea
| | - Sejoong Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jung Hwan Park
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Sung Joon Shin
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Sang Ho Lee
- Department of Internal Medicine, Kyung Hee University Medical Center, Seoul, Korea
| | - Bum Soon Choi
- Department of Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea
| | - Chun Soo Lim
- Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Suhnggwon Kim
- Research Institute of Salt and Health, Seoul, Korea
- Seoul K-Clinic, Seoul, Korea
| | - Ho Jun Chin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Immunology, Seoul National University Postgraduate School, Seoul, Korea
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Choi YH, Kim JH, Lee BE, Hong YC. Urinary benzene metabolite and insulin resistance in elderly adults. Sci Total Environ 2014; 482-483:260-8. [PMID: 24657371 DOI: 10.1016/j.scitotenv.2014.02.121] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 02/26/2014] [Accepted: 02/26/2014] [Indexed: 05/11/2023]
Abstract
BACKGROUND Benzene is a volatile organic compound present in traffic-related and indoor air pollution. It is of particular concern since it is known to induce oxidative stress, which can affect insulin resistance (IR). We therefore examined the association between exposure to environmental benzene and IR in the elderly. STUDY DESIGN Between 2008 and 2010, benzene metabolite levels (urinary trans,trans-muconic acid (t,t-MA)) and homeostatic model assessment index (HOMA-IR) were repeatedly measured in 505 adults aged ≥60 years. Linear mixed-effect models and marginal logistic models were used to evaluate associations of t,t-MA concentration with HOMA-IR score and elevated IR, defined as HOMA-IR ≥2.6. RESULTS After adjustment for sociodemographic and behavioral factors, environmental co-exposures, and metabolic conditions, quartile levels of urinary t,t-MA demonstrated a dose-dependent association with elevated IR (p-trend<0.001) and the level of oxidative stress estimated by urinary malondialdehyde (p-trend<0.001). As compared to the lowest quartile, the upper quartiles of t,t-MA (t,t-MA concentration >0.017mg/g CR) were associated with elevated IR [odds ratio=Q2: 2.00 (95% confidence interval (CI): 1.16-3.46); Q3: 3.33 (95% CI: 1.90-5.84); Q4: 2.07 (95% CI: 1.02-4.22)]. CONCLUSION Urinary benzene at levels currently observed in the urban elderly population is associated with IR, independent of traditional risk factors. Reduction of community-level exposure to benzene is therefore important for the effective prevention of IR in older adults.
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Affiliation(s)
- Yoon-Hyeong Choi
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Jin Hee Kim
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea; Environmental Health Center, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Bo-Eun Lee
- Environmental Health Research Division, National Institute of Environmental Research, Incheon, Republic of Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea; Environmental Health Center, Seoul National University Medical Research Center, Seoul, Republic of Korea.
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Kim S, Kang S, Lee G, Lee S, Jo A, Kwak K, Kim D, Koh D, Kho YL, Kim S, Choi K. Urinary phthalate metabolites among elementary school children of Korea: sources, risks, and their association with oxidative stress marker. Sci Total Environ 2014; 472:49-55. [PMID: 24291132 DOI: 10.1016/j.scitotenv.2013.10.118] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 10/30/2013] [Accepted: 10/30/2013] [Indexed: 06/02/2023]
Abstract
Phthalates have been used in a variety of consumer products and hence frequently been detected in humans. Children are susceptible to endocrine disrupting chemicals such as phthalates, but only limited information is available on the sources of exposure and potential adverse health effects among children. In this study, elementary school students (n=39, aged 9-12 years) were recruited in Seoul, and first void urine samples were collected twice in three-day intervals. Then six phthalate metabolites were analyzed by high performance liquid chromatography with triple quadrupole tandem mass spectrometry. In addition, malondialdehyde (MDA) as an oxidative stress marker was measured. A questionnaire was conducted and information on food consumption and the use of plastic packaging or storage materials was gathered. The concentrations of phthalate metabolites varied substantially by sampling time even within the same subject, but all target metabolites were detected in 100% of the samples with the highest geometric mean of 107 μg/g-creatinine for mono-n-butyl phthalate (MnBP). Urinary levels of mono-isobutyl phthalate (MiBP), and MnBP among Korean children were 8 and 3 times greater than those reported for US children, but those of monoethyl phthalate (MEP) were about 5 times lower than those of US children. Estimated phthalate intakes were generally in safe range, but in 3-8% of the participating children, the hazard quotients greater than one were noted. Urinary MDA concentrations were significantly associated with several metabolite levels after adjusting covariates in regression model. Consumption of dairy products or meat, and use of a plastic material were significantly associated with the DEHP metabolites or MnBP levels in multivariate model. The results of this study provide evidence of the association between phthalate exposure and oxidative stress especially among the early teenagers, and identified major sources that can be applied to development of management plan for phthalate exposure among children.
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Affiliation(s)
- Sunmi Kim
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Sungeun Kang
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Gowoon Lee
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Saeram Lee
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Areum Jo
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Kyunghee Kwak
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Dohyung Kim
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Dohyun Koh
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Young Lim Kho
- School of Human and Environmental Sciences, Eulji University, Seongnam, Gyeonggi, Republic of Korea
| | - Sungkyoon Kim
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Kyungho Choi
- Department of Environmental Health, School of Public Health, Seoul National University, Seoul, Republic of Korea.
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Lin CC, Huang HH, Hu CW, Chen BH, Chong IW, Chao YY, Huang YL. Trace elements, oxidative stress and glycemic control in young people with type 1 diabetes mellitus. J Trace Elem Med Biol 2014; 28:18-22. [PMID: 24315963 DOI: 10.1016/j.jtemb.2013.11.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 01/12/2023]
Abstract
Trace elements and oxidative stress are associated with glycemic control and diabetic complications in type 1 diabetes mellitus. In this study, we analyzed the levels of serum copper, zinc, superoxide dismutase (SOD) activity, and malondialdehyde (MDA) and urinary MDA and 8-hydroxy-2'-deoxyguanosine (8-OHdG) in 33 type 1 diabetic patients with optimal and suboptimal glycemic control (HbA1C<9.0%) and 40 patients with poor glycemic control (HbA1C≥9%) and 27 age- and sex-matched non-diabetic controls to evaluate the differences between these markers in different glycemic control states. Diabetic patients, especially poor-glycemic-control subjects (HbA1C≥9%), exhibited significantly lower levels of serum zinc and increased levels of serum copper (and, therefore, increased serum copper-to-zinc ratios), serum SOD, blood MDA, and urinary MDA and 8-OHdG, relative to non-diabetic subjects. Furthermore, significant correlations existed in these patients between the serum copper, serum copper-to-zinc ratio, and urinary MDA (all p<0.001) and the levels of urinary 8-OHdG (p=0.007) and HbA1C. Our results suggest that high serum copper levels and oxidative stress correlate with glycemic control. Therefore, strict glycemic control, decreased oxidative stress, and a lower copper concentration might prevent diabetic complications in patients with type 1 diabetes mellitus.
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Affiliation(s)
- Ching-Chiang Lin
- Community Healthcare Center, Fooyin University Hospital, Pingtung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Fooyin University, Kaohsiung, Taiwan
| | - Hsiu-Hua Huang
- Department of Laboratory Medicine, Kaohsiung Municipal Hsiaokang Hospital, Kaohsiung, Taiwan
| | - Chiung-Wen Hu
- Department of Public Health, Chung Shan Medical University, Taichung, Taiwan
| | - Bai-Hsiun Chen
- School and College of Medicine, Kaohsiung Medical University, Taiwan; Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Inn-Wen Chong
- Division of Chest Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yu-Ying Chao
- Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yeou-Lih Huang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Domijan AM, Miletić-Medved M, Peraica M, Loft S. Malondialdehyde and 8-oxo-7.8-dihydro-2'deoxyguanosine in the urine of residents from Balkan endemic nephropathy area in Croatia--a pilot study. Coll Antropol 2013; 37:1195-1198. [PMID: 24611334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Balkan endemic nephropathy (BEN) is a human chronic tubulointerstitial renal disease that occurs in rural areas of some Balkan countries. The disease is insidious and fatal, and mostly affects persons in their sixties or seventies. BEN areas have unusually high rates of otherwise rare upper urinary tract tumors (UTT). Since extensive production of reactive oxygen species leading to oxidative stress has been implicated in tumor development, the aim of this study was to see whether oxidative stress is involved in the development of BEN and UTT. Urine samples were collected from a BEN village (N = 22) and a control village (N = 16) residents and analyzed for malondialdehyde (MDA) and 8-oxo-7,8-dihydro-2'deoxyguanosine (8-oxodG). The levels of both oxidative stress parameters were significantly higher in the BEN village residents than controls. However, there was no correlation between MDA and 8-oxodG results. Our results confirm that oxidative stress could be implicated in development of both, BEN and UTT.
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Affiliation(s)
- Ana-Marija Domijan
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia.
| | | | - Maja Peraica
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Steffen Loft
- University of Copenhagen, Department of Public Health, Copenhagen, Denmark
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Liu FF, Wang JP, Zheng YJ, Ng JC. Biomarkers for the evaluation of population health status 16 years after the intervention of arsenic-contaminated groundwater in Xinjiang, China. J Hazard Mater 2013; 262:1159-1166. [PMID: 23608750 DOI: 10.1016/j.jhazmat.2013.03.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/03/2013] [Accepted: 03/27/2013] [Indexed: 06/02/2023]
Abstract
The arsenicosis endemic area in the region of Kuitun and Chepaizi, Dzungaria district, Xinjiang, People Republic of China was the first identified arsenic endemic area in China where arsenic concentration of up to 850 μg/L in the groundwater was reported. An intervention was put in place in 1985 by government to provide an alternative water source at a centralized community level. Sixteen years on since the intervention, we evaluated the health status of 178 villagers from endemic and 179 villagers from control sites. Biomarkers in their urine, included arsenic, porphyrins and malondialdehyde (MDA) were measured and the prevalence of skin lesions was also assessed. The average urinary arsenic (117 ± 8.3 μg/g of creatinine) from the endemic-villages was significantly higher (p<0.001) than that of the controls (73.6 ± 3.2 μg/g of creatinine) while no significant difference was found in urinary porphyrins and malondialdehyde concentrations in the overall studies subjects from these two areas. However when the urinary arsenic was higher than 150 μg/g of creatinine, MDA and porphyrins were higher in the endemic-villagers compared to the controls. Fifty-one out of 178 people from the arsenic endemic area showed skin lesions related to arsenicosis but these were absent among villagers from the control site. Of particular concern, skin lesions related to arsenicosis were observed in 4 out of 9 subjects 16 years of age or younger who were from different villages and born after the completion of water intervention. Although sporadic exposure and/or voluntary drinking contaminated water were thought to be a contributor of arsenicosis after the water intervention, the contribution from other dietary arsenic intakes remain unclear.
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Affiliation(s)
- Faye F Liu
- The University of Queensland, National Research Centre for Environmental Toxicology, 39 Kessels Rd, Coopers Plains QLD 4108, Brisbane, Queensland, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, P.O. Box 486, Salisbury South SA 5106, Adelaide, South Australia, Australia.
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Huang M, Choi SJ, Kim DW, Kim NY, Bae HS, Yu SD, Kim DS, Kim H, Choi BS, Yu IJ, Park JD. Evaluation of factors associated with cadmium exposure and kidney function in the general population. Environ Toxicol 2013; 28:563-70. [PMID: 21786387 DOI: 10.1002/tox.20750] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 05/17/2011] [Accepted: 05/24/2011] [Indexed: 05/10/2023]
Abstract
Cadmium (Cd) is a nonessential toxic metal which is widely distributed in the environment. The general population is exposed to low levels of Cd and the kidney is the organ most sensitive to Cd toxicity. This study was performed to simultaneously evaluate Cd exposure, kidney function, and oxidative stress biomarkers in the general population. A total of 643 adults were interviewed to document demographic characteristics, lifestyles, past-medical history, and diet during the last 24 h. We estimated daily Cd intake based on the diet of study subjects who had not been exposed to Cd occupationally. Whole blood and urine samples were collected and analyzed to determine Cd concentrations and kidney function indices (β₂ -microglobulin [β₂-MG], N-acetyl-β-D-glucosaminidase [NAG], metallothionein [MT]). The oxidative stress index (malondialdehyde [MDA]) was determined from the urine. The daily Cd intake from diet was established as 7.07 μg/day. The mean concentration of Cd measured in the blood was 1.22 μg/L and urine was 0.95 μg/g creatinine. The concentrations of Cd in blood and urine were higher in females than in males. The blood levels of Cd were affected by sex, age, and smoking, and urine Cd was influenced by sex, age, and blood Cd. The urine Cd was positively correlated with MT, NAG activity, and MDA in females, but with NAG only in males. The blood Cd was associated with MT in males. Increased NAG activity was observed when Cd in urine reached 1.0 μg Cd/g creatinine and was also affected by age, hypertension, and diabetes mellitus. Urinary MT only responded to Cd in urine or blood. In summary, exposure to Cd in the general population was influenced by various factors including sex, age, and smoking habits. Such exposure might eventually cause tubular damage in the kidneys through the oxidative stress mechanism, and females might be more susceptible than males to Cd exposure under the environment.
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Affiliation(s)
- Mingai Huang
- Department of Preventive Medicine, College of Medicine, Chung-Ang University, Seoul 156-756, Korea
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Kang S, Kim S, Park J, Kim HJ, Lee J, Choi G, Choi S, Kim S, Kim SY, Moon HB, Kim S, Kho YL, Choi K. Urinary paraben concentrations among pregnant women and their matching newborn infants of Korea, and the association with oxidative stress biomarkers. Sci Total Environ 2013; 461-462:214-21. [PMID: 23727995 DOI: 10.1016/j.scitotenv.2013.04.097] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/27/2013] [Accepted: 04/30/2013] [Indexed: 05/22/2023]
Abstract
Parabens have been used in multiple products including personal care products, pharmaceuticals, and foods for more than 50 years but increasing numbers of studies have raised concerns on their safety. The present study was designed to determine urinary paraben levels among pregnant women and their matching newborn infants (<48 h after delivery), and the association between paraben levels and stress markers. Pregnant women (n=46) and their matching newborn infants were recruited from four university hospitals located in Seoul, Ansan and Jeju of Korea, 2011. Parabens including methyl paraben (MP), ethyl paraben (EP), n-propyl paraben (PP), and n-butyl paraben (BP) were measured in the urine using an automatic, high throughput online SPE-LC-MS/MS method. Urinary concentrations were normalized with specific gravity (SG). Free cortisol, malondealdehyde (MDA) and 8-hydroxydeoxyguanosine (8-OHdG) were measured in the urine as stress marker. Urinary MP was detected as the highest, and BP was detected as the lowest paraben in the urine samples of both pregnant women and their infants. Significant correlations between paraben concentrations of maternal and their newborn infant's urine were observed. The levels of urinary parabens among Korean pregnant women are comparable to those reported elsewhere, except for EP which were 4-9 folds higher than pregnant women of other countries. The ratios of infant to maternal urinary paraben concentrations varied between 0.5 and 0.6 for MP and PP, but approximately 10 fold lower for EP. Urinary MP or EP levels were associated with several oxidative stress related biomarkers such as urinary 8-OHdG and MDA, even after the adjustment of relevant covariates such as maternal age, mode of delivery, pre-pregnancy BMI, gestational age and parity. This is the first study that reported the levels of major parabens in the first urine of newborn infants. Further studies are warranted to understand the implications of paraben exposure among biologically susceptible human populations.
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Affiliation(s)
- Sungeun Kang
- School of Public Health, Seoul National University, Republic of Korea
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Kim JH, Park HY, Bae S, Lim YH, Hong YC. Diethylhexyl phthalates is associated with insulin resistance via oxidative stress in the elderly: a panel study. PLoS One 2013; 8:e71392. [PMID: 23977034 PMCID: PMC3747269 DOI: 10.1371/journal.pone.0071392] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 07/03/2013] [Indexed: 12/20/2022] Open
Abstract
Background Insulin resistance (IR) is believed to be the underlying mechanism of metabolic syndrome and type 2 diabetes mellitus (DM). Recently, a few studies have demonstrated that phthalates could cause oxidative stress which would contribute to the development of IR. Therefore, we evaluated whether exposure to phthalates affects IR, and oxidative stress is involved in the phthalates-IR pathway. Methods We recruited 560 elderly participants, and obtained blood and urine samples during repeated medical examinations. For the determination of phthalate exposure, we measured urinary levels of mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) and mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP) as metabolites of diethylhexyl phthalates (DEHP), and mono-n-butyl phthalate (MnBP) as a metabolite of di-butyl phthalate (DBP). Malondialdehyde (MDA), an oxidative stress biomarker, was also measured in urine samples. We measured serum levels of fasting glucose and insulin, and derived the homeostatic model assessment (HOMA) index to assess IR. A mixed-effect model and penalized regression spline were used to estimate the associations among phthalate metabolites, MDA, and IR. Results The molar sum of MEHHP and MEOHP (∑DEHP) were significantly associated with HOMA (β = 0.26, P = 0.040), and the association was apparent among participants with a history of DM (β = 0.88, P = 0.037) and among females (β = 0.30, P = 0.022). However, the relation between MnBP and HOMA was not found. When we evaluated whether oxidative stress is involved in increases of HOMA by ∑DEHP, MDA levels were significantly associated with increases of ∑DEHP (β = 0.11, P<0.001) and HOMA (β = 0.49, P = 0.049). Conclusions Our study results suggest that exposure to DEHP in the elderly population increases IR, which is related with oxidative stress, and that participants with a history of DM and females are more susceptible to DEHP exposure.
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Affiliation(s)
- Jin Hee Kim
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
- Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hye Yin Park
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sanghyuk Bae
- Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Youn-Hee Lim
- Department of Epidemiology and Biostatistics, School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Yun-Chul Hong
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
- Environmental Health Center, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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Gong J, Zhu T, Kipen H, Wang G, Hu M, Ohman-Strickland P, Lu SE, Zhang L, Wang Y, Zhu P, Rich DQ, Diehl SR, Huang W, Zhang J(J. Malondialdehyde in exhaled breath condensate and urine as a biomarker of air pollution induced oxidative stress. J Expo Sci Environ Epidemiol 2013; 23:322-7. [PMID: 23321859 PMCID: PMC4049321 DOI: 10.1038/jes.2012.127] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 10/01/2012] [Accepted: 11/27/2012] [Indexed: 05/21/2023]
Abstract
Underlying mechanisms by which air pollutants adversely affect human health remain poorly understood. Oxidative stress has been considered as a potential mechanism that may promote lipid peroxidation by reactive oxygen species, leading to the formation of malondialdehyde (MDA) that is excreted in biofluids (e.g., urine and exhaled breath condensate (EBC)). A panel study was conducted to examine whether concentrations of MDA in EBC and urine were associated, respectively, with changes in air pollution levels brought by the Beijing Olympic air pollution control measures. EBC and urine samples from 125 healthy adults were collected twice in each of the pre-, during-, and post-Olympic periods. Period-specific means of MDA and changes in MDA levels associated with increases in 24-h average pollutant concentrations were estimated using linear mixed-effects models. From the pre- to the during-Olympic period, when concentrations of most pollutants decreased, EBC MDA and urinary MDA significantly decreased by 24% (P<0.0001) and 28% (P=0.0002), respectively. From the during-Olympic to the post-Olympic period, when concentrations of most pollutants increased, EBC MDA and urinary MDA increased by 28% (P=0.094) and 55% (P=0.046), respectively. Furthermore, the largest increases in EBC MDA associated with one interquartile range (IQR) increases in all pollutants but ozone ranged from 10% (95% CI: 2%, 18%) to 19% (95% CI: 14%, 25%). The largest increases in urinary MDA associated with IQR increases in pollutant concentration ranged from 9% (95%: 0.3%, 19%) to 15% (95% CI: 3%, 28%). These findings support the utility of EBC MDA as a biomarker of oxidative stress in the respiratory tract and urinary MDA as a biomarker of systemic oxidative stress in relation to air pollution exposure in healthy young adults. Both EBC and urine samples can be collected noninvasively in the general population.
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Affiliation(s)
- Jicheng Gong
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Tong Zhu
- College of Environmental Sciences and Engineering, and the Center for Environmental Health, Peking University, Beijing, China
| | - Howard Kipen
- Environmental and Occupational Health Sciences Institute and UMDNJ-Robert Wood Johnson Medical School, Piscataway, New Jersey, USA
| | - Guangfa Wang
- Peking University First Hospital, Department of Pulmonary Medicine, Beijing, China
| | - Min Hu
- College of Environmental Sciences and Engineering, and the Center for Environmental Health, Peking University, Beijing, China
| | - Pamela Ohman-Strickland
- University of Medicine and Dentistry of New Jersey, School of Public Health, Piscataway, New Jersey, USA
| | - Shou-En Lu
- University of Medicine and Dentistry of New Jersey, School of Public Health, Piscataway, New Jersey, USA
| | - Lin Zhang
- University of Medicine and Dentistry of New Jersey, School of Public Health, Piscataway, New Jersey, USA
| | - Yuedan Wang
- Peking University Health Sciences Center, Department of Immunology, Beijing, China
| | - Ping Zhu
- Peking University First Hospital, Department of Hematology, Beijing, China
| | - David Q. Rich
- University of Rochester, School of Medicine and Dentistry, Rochester, New York, USA
| | - Scott R. Diehl
- University of Medicine and Dentistry of New Jersey, School of Dentistry, Newark, New Jersey, USA
| | - Wei Huang
- College of Environmental Sciences and Engineering, and the Center for Environmental Health, Peking University, Beijing, China
| | - Junfeng (Jim) Zhang
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- University of Medicine and Dentistry of New Jersey, School of Public Health, Piscataway, New Jersey, USA
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Li Z, Henning SM, Zhang Y, Rahnama N, Zerlin A, Thames G, Tseng CH, Heber D. Decrease of postprandial endothelial dysfunction by spice mix added to high-fat hamburger meat in men with Type 2 diabetes mellitus. Diabet Med 2013; 30:590-5. [PMID: 23320544 PMCID: PMC7357279 DOI: 10.1111/dme.12120] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/09/2013] [Indexed: 12/19/2022]
Abstract
AIMS Consumption of a high-fat diet has been demonstrated to promote endothelial dysfunction, possibly through an increase in lipid peroxidation and decrease in serum nitric oxide. The present study was designed to investigate whether consumption of a hamburger cooked with a polyphenol-rich spice mixture will reduce postprandial lipid oxidation and endothelial dysfunction in men with Type 2 diabetes. METHODS Twenty-two subjects consumed burgers cooked with salt only (control burger) or with salt and spice mix (spice burger) in randomized order. The postprandial concentration of urinary malondialdehyde and nitrate/nitrite as well as the peripheral arterial tonometry score were determined. RESULTS Eighteen subjects completed the study. Postprandial serum glucose, insulin and triglyceride concentrations were similar in all subjects after control burger or spice burger consumption. Urine malondialdehyde excretion in mmol/g creatinine was reduced by 31% (P < 0.001) after consuming the spice burger compared with the control burger. Two hours after consumption of the burgers, the peripheral arterial tonometry score was significantly different between control burger consumption (-9.7 ± 21.5%) and spice burger consumption (+18.0 ± 42.4%) (P = 0.025). Mean urinary nitrate/nitrite concentrations in urine collected during the 6 h after consumption of the control burger was 9.09 ± 5.7 mmol/g creatinine, but 12.37 ± 7.00 mmol/g creatinine after the spice burger (P = 0.053). CONCLUSION Adding a spice mix to hamburger meat prior to cooking resulted in a reduction in urinary malondialdehyde, an increase in urinary nitrate/nitrite and improvement of postprandial endothelial dysfunction in men with Type 2 diabetes. Therefore, cooking a hamburger with a polyphenol-rich spice mixture may lead to potential cardiovascular benefits in patients with Type 2 diabetes mellitus.
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Affiliation(s)
- Z Li
- Center for Human Nutrition, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
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Bizon A, Antonowicz-Juchniewicz J, Andrzejak R, Milnerowicz H. The influence of the intensity of smoking and years of work in the metallurgy on pro-oxidant/antioxidant balance in the blood of smelters. Toxicol Ind Health 2013; 29:149-61. [PMID: 22080035 DOI: 10.1177/0748233711427054] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of this study was to investigate the effect of cigarette smoking and occupational exposure to heavy metals on the degree of pro-oxidant/antioxidant imbalance in smelters. The investigations were performed on the blood and urine of 400 subjects: 300 male copper smelters and 100 nonexposed male subjects. Biological material was divided into three groups: nonsmokers, those who smoked less than 20 cigarettes a day and those who smoked more than 20 cigarettes a day. The results showed a significant increase in the concentration of lead, cadmium and arsenic in the blood and urine of smelters, while smoking more than 20 cigarettes a day caused a further increase in the concentration of these metals. The level of malondialdehyde was approximately twofold higher in the plasma of the smelters compared to the control group. We have observed a disturbance in the level of antioxidants in erythrocyte lysate manifested by an increase in metallothionein and glutathione concentrations as well as superoxide dismutase and glutathione peroxidase activities and the decrease in glutathione S-transferase activity. Cigarette smoking, years of work in metallurgy and age of smelters were additional factors significantly affecting the pro-oxidant/antioxidant balance.
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Affiliation(s)
- Anna Bizon
- Department of Biomedical and Environmental Analyses, Wroclaw University of Medicine, Wroclaw, Poland.
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Frank T, Netzel G, Kammerer DR, Carle R, Kler A, Kriesl E, Bitsch I, Bitsch R, Netzel M. Consumption of Hibiscus sabdariffa L. aqueous extract and its impact on systemic antioxidant potential in healthy subjects. J Sci Food Agric 2012; 92:2207-18. [PMID: 22331521 DOI: 10.1002/jsfa.5615] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 12/27/2011] [Accepted: 01/08/2012] [Indexed: 05/20/2023]
Abstract
BACKGROUND To evaluate health benefits attributed to Hibiscus sabdariffa L. a randomized, open-label, two-way crossover study was undertaken to compare the impact of an aqueous H. sabdariffa L. extract (HSE) on the systemic antioxidant potential (AOP; assayed by ferric reducing antioxidant power (FRAP)) with a reference treatment (water) in eight healthy volunteers. The biokinetic variables were the areas under the curve (AUC) of plasma FRAP, ascorbic acid and urate that are above the pre-dose concentration, and the amounts excreted into urine within 24 h (Ae(0-24) ) of antioxidants as assayed by FRAP, ascorbic acid, uric acid, malondialdehyde (biomarker for oxidative stress), and hippuric acid (metabolite and potential biomarker for total polyphenol intake). RESULTS HSE caused significantly higher plasma AUC of FRAP, an increase in Ae(0-24) of FRAP, ascorbic acid and hippuric acid, whereas malondialdehyde excretion was reduced. Furthermore, the main hibiscus anthocyanins as well as one glucuronide conjugate could be quantified in the volunteers' urine (0.02% of the administered dose). CONCLUSION The aqueous HSE investigated in this study enhanced the systemic AOP and reduced the oxidative stress in humans. Furthermore, the increased urinary hippuric acid excretion after HSE consumption indicates a high biotransformation of the ingested HSE polyphenols, most likely caused by the colonic microbiota.
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Al-Saleh I, Al-Sedairi AA, Elkhatib R. Effect of mercury (Hg) dental amalgam fillings on renal and oxidative stress biomarkers in children. Sci Total Environ 2012; 431:188-96. [PMID: 22683759 DOI: 10.1016/j.scitotenv.2012.05.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2011] [Revised: 05/10/2012] [Accepted: 05/10/2012] [Indexed: 05/24/2023]
Abstract
We examined the effect of mercury (Hg) associated with dental amalgam fillings on biomarkers of renal and oxidative stress in children between the ages of 5-15.5 years. Urine samples were analyzed for N-acetyl-β-D-glucosaminidase (NAG), α(1)-microglobulin (α(1)-MG), β(2)-microglobulin (β(2)-MG), retinol binding protein (RBP), albumin (ALB), 8-hydroxy-2-deoxyguanosine (8-OHdG) and malondialdehyde (MDA). The level of urinary Hg (UHg-C) was calculated as μg/g creatinine. Multiple regression analyses revealed that the excretion of urinary NAG was significantly associated with the presence of dental amalgam fillings (β=0.149, P=0.03) and the levels of UHg-C (β=0.531, P=0), with an interaction between the two (P=0). The increase in urinary NAG in relation to UHg-C levels had a dose-effect pattern. The lowest observed effect was seen at UHg-C levels above 1.452 μg/g creatinine, which is lower than previously reported. In contrast, α(1)-MG was negatively associated with the presence of dental amalgam fillings (β=-0.270, P=0), but positively with UHg-C levels (β=0.393, P=0). There were 7 children without, and one child with, dental amalgam fillings with urinary α(1)-MG levels above the reference limit of >7 mg/g creatinine. Even though α(1)-MG seems to be a reliable biomarker for early changes in renal functions, it might exert its effect only at a higher level of exposure. An inverse relationship was also observed between urinary 8-OHdG levels and the presence of dental amalgam fillings. This might suggest that the dental amalgam does not increase DNA damage but reduces the capacity to repair DNA, leading to lower urinary excretion of 8-OHdG. On the other hand, we found that Hg affected the excretion of urinary 8-OHdG in a dose-related pattern that was mostly associated with long-term exposure to low Hg levels. Urinary NAG levels were positively associated with urinary MDA levels (β=0.516, P=0) but not with 8-OHdG (β=0.134, P=0.078) after adjustment for potential confounders. Both UHg-C and the presence of dental amalgam fillings remained predictors of the NAG model. Our data provide evidence that low exposure to Hg from dental amalgam fillings exerts an effect on kidney tubular functions in children. Oxidative stress may have played a role in this mechanism. The results of this study would also suggest that urinary NAG is the most sensitive of all the investigated renal biomarkers. These results should be confirmed with further investigation.
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Affiliation(s)
- Iman Al-Saleh
- Biological & Medical Research Department, King Faisal Specialist Hospital & Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
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Zhang C, Zhang M, Sun Y, Li J, Fang M, Zhu X, Liu C. [Effect of dibutyl phthalate and di-(2-ethylhexyl) phthalate on urine SOD activity and MDA content in rats]. Nan Fang Yi Ke Da Xue Xue Bao 2012; 32:160-164. [PMID: 22381748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To evaluate the effect of dibutyl phthalate (DBP) and di-(2-ethylhexyl) phthalate (DEHP) on urine superoxide dismutase (SOD) activity and malondialdehyde (MDA) content in rats. METHODS According to 2×2 factorial analysis, 60 adult male SD rats were randomized into 10 groups (n=6), including a control group (fed with sesame oil), 3 DBP groups (fed with DBP at the doses of 30, 100 and 300 mg/kg), 3 DEHP groups (with DEHP at 50, 150, and 450 mg/kg), and 3 DBP+DEHP groups (with 30 mg/kg DBP+50 mg/kg DEHP, 100 mg/kg DBP+150 mg/kg DEHP, and 300 mg/kg DBP +450 mg/kg DEHP). The agents were administered in a single dose through gavage in a volume of 2 ml. After the treatments, the 24, 48, 72, and 96 h urine samples were collected to determine the SOD activity and MDA content. RESULTS DBP and DEHP, either alone or in combination, significantly decreased SOD activity and increased MDA content in the urine collected at 24 h but not at the other time points. Such changes were gradually reversed with time. CONCLUSION DBP or DEHP treatment alone can result in significant oxidative damage in the kidney of rats, and the toxic effect of the combined exposure is even more obvious.
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Affiliation(s)
- Chijian Zhang
- South China Agricultural University, Guangzhou, China
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Chen JL, Huang YJ, Pan CH, Hu CW, Chao MR. Determination of urinary malondialdehyde by isotope dilution LC-MS/MS with automated solid-phase extraction: a cautionary note on derivatization optimization. Free Radic Biol Med 2011; 51:1823-9. [PMID: 21906673 DOI: 10.1016/j.freeradbiomed.2011.08.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 08/17/2011] [Accepted: 08/17/2011] [Indexed: 11/22/2022]
Abstract
A highly sensitive quantitative LC-MS/MS method was developed for measuring urinary malondialdehyde (MDA). With the use of an isotope internal standard and online solid-phase extraction, urine samples can be directly analyzed within 10 min after 2,4-dinitrophenylhydrazine (DNPH) derivatization. The detection limit was estimated as 0.08 pmol. This method was further applied to assess the optimal addition of DNPH for derivatization and to measure urinary MDA in 80 coke oven emission (COE)-exposed and 67 nonexposed workers. Derivatization optimization revealed that to achieve complete derivatization reaction, an excess of DNPH is required (DNPH/MDA molar ratio: 893-8929) for urine samples that is about 100 times higher than that of MDA standard solutions (molar ratio: 10-80). Meanwhile, the mean urinary concentrations of MDA in COE-exposed workers were significantly higher than those in nonexposed workers (0.23±0.17 vs 0.14±0.05 μmol/mmol creatinine, P<0.005). Urinary MDA concentrations were also significantly associated with the COE (P<0.005) and smoking exposure (P<0.05). Taken together, this method is capable of routine high-throughput analysis and accurate quantification of MDA and would be useful for assessing the whole-body burden of oxidative stress. Our findings, however, raise the issue that derivatization optimization should be performed before it is put into routine biological analysis.
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Affiliation(s)
- Jian-Lian Chen
- School of Pharmacy, China Medical University, Taichung 404, Taiwan
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Frankič T, Salobir J. In vivo antioxidant potential of Sweet chestnut (Castanea sativa Mill.) wood extract in young growing pigs exposed to n-3 PUFA-induced oxidative stress. J Sci Food Agric 2011; 91:1432-1439. [PMID: 21384375 DOI: 10.1002/jsfa.4328] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 01/10/2011] [Accepted: 01/10/2011] [Indexed: 05/30/2023]
Abstract
BACKGROUND Farm animals in intensive farming systems are frequently exposed to oxidative stress, which demands adequate antioxidant protection. The aim of this study was to evaluate the antioxidant potential of different concentrations of Sweet chestnut wood extract (SCW; 0.75, 1.5 and 3 g kg⁻¹) in case of n-3 PUFA-induced oxidative stress in young pigs. RESULTS The highest concentration (3 g kg⁻¹) of SCW decreased malondialdehyde excretion in urine by 31.7%, but had no effect on plasma malondialdehyde. A linear trend towards decrease of urine isoprostanes iPF(2α)-VI was observed with the addition of SCW. All three concentrations of SCW efficiently protected blood lymphocytes from DNA damage and lowered plasma alanine aminotransferase levels. The antioxidative and antigenotoxic effect of 3 g SCW kg⁻¹ feed was comparable to the effect of 90.4 mg kg⁻¹ of added vitamin E. CONCLUSION The results from this study show that, besides being known as antihelmintic, antimicrobial and antiviral agent, Sweet chestnut wood extract could also be considered as a promising natural antioxidant in animal nutrition.
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Affiliation(s)
- Tamara Frankič
- Chair of Nutrition, Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230 Domžale, Slovenia
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Li C, He J, Liu MH, Liu YM, Yuan HR, Liu XB, Wang Y, Yang T, Fang YQ, Xiao WB. [Effect of a simulated He-O2 saturation dive to 65 msw on oxidative stress in humans]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2011; 27:250-252. [PMID: 21845887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To investigate whether a simulated He-O2 saturation dive to 65 msw would affect oxidative balance in humans. METHODS Seven divers participated in a simulated saturation dive to 0.75 MPa (65 msw). 24-h urine samples were collected twice before, twice during, and twice after the dive, then were analyzed for contents of superoxide dismutase (SOD), malondialdehyde (MDA), total amino acid (T-AA) and total anti-oxidant capacity (T-AOC). Meanwhile, total urine volume and body weight were measured. RESULTS The content of T-AA was higher. (P < 0.05) than the base value in final decompression, but reverse to normal at one week after decompression. There were no changes in contents of SOD, MDA and T-AOC during and after the dive compared with their basic value. Total urine volume was lower (P < 0.05, vs basic value) at first day in chamber, then returned to normal. Body weight gradually increased after compression till the end of decompression (higher than basic value, P < 0.05). CONCLUSION These data indicate that simulated saturation dive to 65 msw may not induce obvious oxidative damage, but it is necessary to monitor 24-h urine volume and oxidative sress by time in order to prevent from tissue injury.
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Affiliation(s)
- Ci Li
- Naval Medical Research Institute, Shanghai 200433, China
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