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Huang F, Long Q, Liu S, Chen Y, Wang Y, Wang H, Dong R, Guo J, Chen B. Urinary Excretion of Cyanuric Acid in Association with Urolithiasis: A Matched Case-Control Study in Shanghai Adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148726. [PMID: 35886578 PMCID: PMC9317901 DOI: 10.3390/ijerph19148726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 12/04/2022]
Abstract
Melamine (MEL) has raised human concern since the 2008 milk scandal. Co-exposure to MEL and one of its analogues, cyanuric acid (CYA), has been reported to have a synergistic effect on promoting urolithiasis. However, few epidemiological studies have reported urolithiasis in association with exposure to CYA based on our knowledge. We therefore conducted a case-control study to investigate whether cases of urolithiasis had higher excretion of urinary CYA than the controls. Spot urine samples from 70 adult cases and first-morning urine samples from 70 controls (matched by age and sex) were collected for the measurement of MEL, CYA, and other two analogues in urine. The case group also had 2.81-fold higher concentration of urinary CYA than the control group (34.87 versus 12.43 ng/mL, p-value < 0.001). Multivariate conditional logistic regression models adjusting potential confounders of personal characteristics identified the risk factor of urinary CYA as a continuous variable with odds ratio (OR) (95% confidence interval, 95%CI) of 1.11 (1.02−1.21) (p-value = 0.021) and having meals at restaurants with OR of 5.71 (1.01−32.31) (p-value = 0.049). Compared to the participants having the lowest quartile of CYA concentration in urine, participants at the second, third, and fourth quartile groups had ORs of 13.94, 83.69, and 118.65 with p-values of 0.004, <0.001, and <0.001, respectively. The high excretion of urinary CYA in urolithiasis cases might be the sign of stones in patients consisting of CYA, then proving the attribution of CYA exposure in the etiology of urolithiasis. These findings are important since CYA is a degraded by-product of chlorinated isocyanuric acid disinfectants, which are widely used in daily life not only in swimming pool water but also in other scenarios, such as serving as anti-pandemic disinfectants. Risk assessment of CYA serving as a by-product of disinfectants needs to be conducted in future studies.
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Affiliation(s)
- Feifei Huang
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
| | - Qilai Long
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (Q.L.); (Y.C.)
| | - Shaojie Liu
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
| | - Yanyun Chen
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (Q.L.); (Y.C.)
| | - Yifei Wang
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
| | - Hangwei Wang
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
| | - Ruihua Dong
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
| | - Jianming Guo
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (Q.L.); (Y.C.)
- Correspondence: (J.G.); (B.C.)
| | - Bo Chen
- Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China; (F.H.); (S.L.); (Y.W.); (H.W.); (R.D.)
- Correspondence: (J.G.); (B.C.)
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Sun W, Yang Y, Mei Y, Wu Y, Chen X, An L. Prenatal cyanuric acid exposure depresses hippocampal synaptic plasticity and induces spatial learning and memory deficits. Toxicol Lett 2021; 354:24-32. [PMID: 34757177 DOI: 10.1016/j.toxlet.2021.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/18/2021] [Accepted: 10/26/2021] [Indexed: 01/23/2023]
Abstract
The infant and fetus may be exposed to cyanuric acid (CA) via several different routes into the diet or milk product as well as deliberate contamination. Previous findings indicated chronic CA treatment caused neurotransmission and synaptic impairment in the early developing hippocampus. This study was designed to characterize the effects of different doses (10 mg/kg, 20 mg/kg and 40 mg/kg) of CA exposure on the developing fetus. Pregnant rats were intraperitoneally exposed to CA during the entire period of gestation and male offspring were selected for water maze task, neural recording and N-methyl-d-aspartate (NMDA) receptor detection around the eighth postnatal week. We found that CA exposure impaired the learning and memory function in a dose-dependent manner. The paired-pulse ratio (PPR) and GluN2A-dependent long-term potentiation (LTP) at the Schaffer collateral-CA1 pathway were affected in CA-exposed rats. Remarkably, hippocampal levels of NMDA-GluN2A, but not NMDA-GluN2B, were significantly decreased. Meanwhile, the spine density of hippocampal CA1 neurons was not altered by the CA exposure. Our findings are consistent with the hypothesis that CA treatment during the prenatal period produces deficits in spatial cognition by disrupting hippocampal synaptic function.
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Affiliation(s)
- Wei Sun
- Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China; Behavioral Neuroscience Laboratory, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China
| | - Yang Yang
- Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China
| | - Yazi Mei
- Graduate School of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yuanhua Wu
- Department of Neurology, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China
| | - Xiao Chen
- Behavioral Neuroscience Laboratory, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China
| | - Lei An
- Department of Pediatric, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China; Behavioral Neuroscience Laboratory, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China; Department of Neurology, The First Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang, Guizhou, 550001, China.
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Chen SJ, Chiu KY, Chen HY, Lin WY, Chen YH, Chen WC. Animal Models for Studying Stone Disease. Diagnostics (Basel) 2020; 10:diagnostics10070490. [PMID: 32708380 PMCID: PMC7400259 DOI: 10.3390/diagnostics10070490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 11/18/2022] Open
Abstract
Animals have stone disease too. There are several animal models for the research of human stone disease. Rodents are the most frequently used for stone research, although they are not prone to forming crystals in the kidneys. Ethylene glycol (EG), sodium oxalate and l-hydroxyproline are common lithogenic agents. Dogs and pigs were also reported as a study animal for stone disease. However, the breeding costs and body size are too high. The most-used genetic study animal for stone disease was the mouse, but it was high-cost. Calcium oxalate (CaOx) crystals can also be light microscopically observed in the Malphigian tubules of Drosophila melanogaster, induced by adding EG to the food. Genetic studies of flies can be done by cross-breeding, and this has a lower cost than using mice. The fly model also has several advantages, including minimal breeding equipment, the fact that it is easier to reach larger numbers in a short time with flies, that crystals can be observed under microscopy, and that they allow genetic study. We suggest the fly will be an ideal animal model for stone research in the future.
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Affiliation(s)
- Szu-Ju Chen
- Division of Urology, Department of Surgery, Taichung Veterans General Hospital, Taichung 407204, Taiwan; (S.-J.C.); (K.-Y.C.)
| | - Kun-Yuan Chiu
- Division of Urology, Department of Surgery, Taichung Veterans General Hospital, Taichung 407204, Taiwan; (S.-J.C.); (K.-Y.C.)
| | - Huey-Yi Chen
- Departments of Obstetrics and Gynecology, Medical Research, and Urology, China Medical University Hospital, Taichung 404332, Taiwan;
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404333, Taiwan;
| | - Wei-Yong Lin
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404333, Taiwan;
| | - Yung-Hsiang Chen
- Departments of Obstetrics and Gynecology, Medical Research, and Urology, China Medical University Hospital, Taichung 404332, Taiwan;
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404333, Taiwan;
- Department of Psychology, College of Medical and Health Science, Asia University, Taichung 413305, Taiwan
- Correspondence: (Y.-H.C.); (W.-C.C.)
| | - Wen-Chi Chen
- Departments of Obstetrics and Gynecology, Medical Research, and Urology, China Medical University Hospital, Taichung 404332, Taiwan;
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 404333, Taiwan;
- Correspondence: (Y.-H.C.); (W.-C.C.)
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Yiu AJ, Ibeh CL, Roy SK, Bandyopadhyay BC. Melamine induces Ca 2+-sensing receptor activation and elicits apoptosis in proximal tubular cells. Am J Physiol Cell Physiol 2017; 313:C27-C41. [PMID: 28381520 DOI: 10.1152/ajpcell.00225.2016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 03/29/2017] [Accepted: 03/30/2017] [Indexed: 01/06/2023]
Abstract
Melamine causes renal tubular cell injury through inflammation, fibrosis, and apoptosis. Although melamine affects the rise in intracellular Ca2+ concentration ([Ca2+]i), reactive oxygen species (ROS) production, and proapoptotic pathway activation, the mechanism of upstream Ca2+ signaling is unknown. Because melamine has some structural similarities with l-amino acids, which endogenously activate Ca2+-sensing receptors (CSR), we examined the effect of melamine on CSR-induced Ca2+ signaling and apoptotic cell death. We show here that melamine activates CSR, causing a sustained Ca2+ entry in the renal epithelial cell line, LLC-PK1. Moreover, such CSR stimulation resulted in a rise in [Ca2+]i, leading to enhanced ROS production. Furthermore, melamine-induced elevated [Ca2+]i and ROS production caused a dose-dependent increase in apoptotic (by DAPI staining, DNA laddering, and annexin V assay) and necrotic (propidium iodide staining) cell death. Upon examining the downstream mechanism, we found that transforming growth factor β1 (TGF-β1), which increases extracellular matrix genes and proapoptotic signaling, was also upregulated at lower doses of melamine, which could be due to an early event inducing apoptosis. Additionally, cells exposed to melamine displayed a rise in pERK activation and lactate dehydrogenase release resulting in cytotoxicity. These results offer a novel insight into the molecular mechanisms by which melamine exerts its effect on CSR, causing a sustained elevation of [Ca2+]i, leading to ROS generation, fibronectin production, proapoptotic pathway activation, and renal cell damage. Together, these results thus suggest that melamine-induced apoptosis and/or necrosis may subsequently result in acute kidney injury and promote kidney stone formation.
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Affiliation(s)
- Allen J Yiu
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, District of Columbia.,Department of Pharmacology and Physiology, School of Medicine, George Washington University, Washington, District of Columbia; and
| | - Cliff-Lawrence Ibeh
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, District of Columbia
| | - Sanjit K Roy
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, District of Columbia
| | - Bidhan C Bandyopadhyay
- Calcium Signaling Laboratory, Research Service, Veterans Affairs Medical Center, Washington, District of Columbia; .,Department of Pharmacology and Physiology, School of Medicine, George Washington University, Washington, District of Columbia; and.,Department of Pharmacology and Physiology, Georgetown University, Washington, District of Columbia
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Chu CY, Tang LY, Li L, Shum ASW, Fung KP, Wang CC. Adverse reproductive effects of maternal low-dose melamine exposure during pregnancy in rats. ENVIRONMENTAL TOXICOLOGY 2017; 32:131-138. [PMID: 26589250 DOI: 10.1002/tox.22218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 10/23/2015] [Accepted: 11/01/2015] [Indexed: 06/05/2023]
Abstract
Melamine is a heterocyclic, aromatic amine and nitrogen-enriched environmental toxicant, found in not only adulterated foodstuffs but also industrial household tableware and paints. Previous studies demonstrated adverse effects of high-dose melamine on human infants and pregnant animals, but effects of low-dose melamine on pregnancy have not been reported. In this study, reproductive effects of low-dose melamine were investigated in pregnant rats. Melamine in the range of 12.5-50 mg/kg was administered to pregnant rats at different gestational stages. Maternal weight gain was not significantly affected, and other maternal morbidity was not observed. Low-dose melamine exposure during pregnancy increased fetal size but reduced somite number in gastrulation (GD8.5-GD10.5) and organogenesis (GD10.5-GD16.5) periods, and increased incidence of stillbirth in whole gestational period (GD0.5 to delivery). Embryotoxicity of melamine was further confirmed by whole embryo culture in vitro that melamine retarded embryonic growth, impaired development of brain and heart, and induced open neural tube and atrioventricular defects with increased apoptosis. In conclusion, adverse reproductive effects of low-dose melamine during pregnancy were identified in the developing rat embryos and the perinatal effects of melamine were gestational and developmental stage dependent. Detailed hazard and risk assessment of melamine in reproduction system are warrant. © 2015 Wiley Periodicals, Inc. Environ Toxicol 32: 131-138, 2017.
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Affiliation(s)
- Ching Yan Chu
- Department of Obstetrics and Gynaecology, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Ling Ying Tang
- Department of Obstetrics and Gynaecology, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Lu Li
- Department of Obstetrics and Gynaecology, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Alisa Sau Wun Shum
- School of Biomedical Sciences, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Kwok Pui Fung
- School of Biomedical Sciences, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Chi Chiu Wang
- Department of Obstetrics and Gynaecology, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
- School of Biomedical Sciences, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
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Sun J, Cao Y, Zhang X, Zhao Q, Bao E, Lv Y. Melamine negatively affects testosterone synthesis in mice. Res Vet Sci 2016; 109:135-141. [DOI: 10.1016/j.rvsc.2016.10.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 09/24/2016] [Accepted: 10/12/2016] [Indexed: 11/28/2022]
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Guan X, Deng Y. Melamine-associated urinary stone. Int J Surg 2016; 36:613-617. [PMID: 27845270 DOI: 10.1016/j.ijsu.2016.11.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 11/28/2022]
Abstract
The devastating contamination of milk formula with Melamine, which caused havoc in China, happened almost eight years ago. Although most patients with melamine-associated urinary stone were given conservative medical treatment, the impact was not completely eliminated. Extensive studies are needed to assess chronic effects in the affected population. In this review, we describe the pathogenesis, pathology, clinical manifestations, management and epidemiology; and the need for longer term follow-up of melamine-associated urinary stones.
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Affiliation(s)
- Xiaofeng Guan
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, China.
| | - Yaoliang Deng
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, China.
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Gabriels G, Lambert M, Smith P, Wiesner L, Hiss D. Melamine contamination in nutritional supplements--Is it an alarm bell for the general consumer, athletes, and 'Weekend Warriors'? Nutr J 2015; 14:69. [PMID: 26182916 PMCID: PMC4504043 DOI: 10.1186/s12937-015-0055-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 07/02/2015] [Indexed: 11/14/2022] Open
Abstract
Background Nutritional supplements are used or experimented with by consumers, notably these are; competitive and recreational athletes of all ages, and ‘weekend warriors’. As a consequence the supplement industry has grown to meet the increasing demand. A Global Industry Analysts Inc. report indicates that the herbal supplement market has not declined during the worldwide recession, but in fact exhibited steady growth over the period 2008 to 2009. It is anticipated that the market will reach US$93.15 billion by the year 2015. These supplements may contain adulterated substances that may potentially have harmful short - and long-term health consequences to the consumer. “Scrap Melamine” is such an example, which has been implicated in the kidney failure and death of several cats, dogs and pigs. In China in 2008, reports described very severe health effects in infants and young children. At the time over 294 000 infants were screened and diagnosed with urinary tract stones and sand-like calculi associated with melamine in milk products, of which 50 000 infants were hospitalised, and at least six associated deaths, recorded. The extent that melamine contamination occurs in nutritional supplements is not known. Therefore, the aim of this study was to determine whether commercially available nutritional and traditional supplement products contain melamine, even though they are not declared by the manufacturer on the product label. Methods A total of 138 nutritional supplements products were obtained from (i) direct purchases from shops, pharmacies and outlets, (ii) directly from consumers, and (iii) from suppliers, manufacturers and distributors. The products were laboratory analysed for melamine, using Tandem Liquid Chromatography Mass Spectrometry. Results Forty-seven % of all the products (n = 138) tested positive for melamine. Eight-two % of the South African produced products (n = 27) tested positive and 58 % of the products imported into South Africa (n = 50) tested positive. The median concentration estimate for melamine in the products tested were, 6.0 μg/g for the 138 supplements tested, 8.9 μg/g for South African produced products, and 6.9 μg/g for products imported into South Africa. Conclusion The melamine (undeclared on product label) levels detected in the nutritional supplements products investigated were within the Tolerable Daily intake (TDI) limit guidelines of 200 μg/g as set by WHO and others. Melamine over exposure within the context of the nutritional supplements consumption in the products investigated should not be of concern to the consumer provided the recommended guidelines of daily product use are adhered to. Further investigation is warranted to determine, (i) the link of melamine as (part) substitute for the perceived total declared protein content on the product label, (ii) cyanuric and uric acid presence in the supplement products that could form chemical-complex formation with melamine and/or analogues that could cause adverse health effects.
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Affiliation(s)
- Gary Gabriels
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Faculty of Health Sciences, Observatory, Cape Town, 7925, South Africa.
| | - Mike Lambert
- Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South Africa.
| | - Pete Smith
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Faculty of Health Sciences, Observatory, Cape Town, 7925, South Africa.
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Faculty of Health Sciences, Observatory, Cape Town, 7925, South Africa.
| | - Donavon Hiss
- Department of Medical BioSciences, University of the Western Cape, Cape Town, South Africa.
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Son JY, Kang YJ, Kim KS, Kim TH, Lim SK, Lim HJ, Jeong TC, Choi DW, Chung KH, Lee BM, Kim HS. Evaluation of renal toxicity by combination exposure to melamine and cyanuric Acid in male sprague-dawley rats. Toxicol Res 2014; 30:99-107. [PMID: 25071919 PMCID: PMC4112071 DOI: 10.5487/tr.2014.30.2.099] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 05/29/2014] [Accepted: 06/12/2014] [Indexed: 12/31/2022] Open
Abstract
Melamine-induced nephrotoxicity is closely associated with crystal formation in the kidney caused by combined exposure to melamine (Mel) and cyanuric acid (CA). However, there are few dosage-finding studies for toxicological evaluation of chronic co-exposure to Mel and CA. The objective of this study was to investigate the possible mechanism by which a Mel and CA mixture lead to renal toxicity in rats. Mel and CA were co-administered to rats via oral gavage for 50 days. Nephrotoxicity was determined by measuring blood urea nitrogen (BUN) and serum creatinine (sCr) levels. Relative kidney weights were significantly increased in rats after co-exposure to Mel+CA (63/6.3 or 630/6.3 mg/kg) mixtures. BUN and sCr levels were significantly increased after Mel and CA co-exposure. Taken together, significant increase in KIM-1, NGAL, and calbindin levels were observed in the urine of rats exposed to Mel+CA (63/6.3 or 630/6.3 mg/kg) compared with the corresponding control group. Histological analysis revealed epithelial degeneration and necrotic cell death in the proximal tubules of the kidney after co-exposure to Mel+CA (63/6.3 or 630/6.3 mg/kg). Our data suggest that Mel-mediated renal toxicity may be influenced by CA concentrations in Mel-contaminated milk or foods.
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Affiliation(s)
- Ji Yeon Son
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Yoon Jong Kang
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Kyeong Seok Kim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Tae Hyung Kim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Sung Kwang Lim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Hyun Jung Lim
- College of Pharmacy, Pusan National University, Busan, Korea
| | | | - Dal Woong Choi
- Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea
| | - Kyu Hyuck Chung
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Byung Mu Lee
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Hyung Sik Kim
- Division of Toxicology, School of Pharmacy, Sungkyunkwan University, Suwon, Korea
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