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Zhou L, Wu B, Tang M, Li G, Chan W, Song L, Wang J, Zhu L, Lin L, Lian Y. Association between exposure to metalworking fluid aerosols, occupational noise and chronic kidney disease: a cross-sectional study in China. BMC Public Health 2024; 24:1495. [PMID: 38835007 DOI: 10.1186/s12889-024-19006-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) carries a high public health burden yet little is known about the relationship between metalworking fluid (MWF) aerosols, occupational noise and CKD. We aimed to explore the relationship between occupational MWF aerosols, occupational noise and CKD. METHODS A total of 2,738 machinists were sampled from three machining companies in Wuxi, China, in 2022. We used the National Institute for Occupational Safety and Health (NIOSH) method 5524 to collect individual samples for MWF aerosols exposure, and the Chinese national standard (GBZ/T 189.8-2007) method to test individual occupational noise exposure. The diagnostic criteria for CKD were urinary albumin/creatinine ratio (UACR) of ≥ 30 mg/g and reduced renal function (eGFR < 60 mL.min- 1. 1.73 m- 2) lasting longer than 3 months. Smooth curve fitting was conducted to analyze the associations of MWF aerosols and occupational noise with CKD. A segmented regression model was used to analyze the threshold effects. RESULTS Workers exposed to MWF aerosols (odds ratio [OR] = 2.03, 95% confidence interval [CI]: 1.21-3.41) and occupational noise (OR = 1.77, 95%CI: 1.06-2.96) had higher prevalence of CKD than nonexposed workers. A nonlinear and positive association was found between increasing MWF aerosols and occupational noise dose and the risk of CKD. When daily cumulative exposure dose of MWF aerosols exceeded 8.03 mg/m3, the OR was 1.24 (95%CI: 1.03-1.58), and when occupational noise exceeded 87.22 dB(A), the OR was 1.16 (95%CI: 1.04-1.20). In the interactive analysis between MWF aerosols and occupational noise, the workers exposed to both MWF aerosols (cumulative exposure ≥ 8.03 mg/m3-day) and occupational noise (LEX,8 h ≥ 87.22 dB(A)) had an increased prevalence of CKD (OR = 2.71, 95%CI: 1.48-4.96). MWF aerosols and occupational noise had a positive interaction in prevalence of CKD. CONCLUSIONS Occupational MWF aerosols and noise were positively and nonlinearly associated with CKD, and cumulative MWF aerosols and noise exposure showed a positive interaction with CKD. These findings emphasize the importance of assessing kidney function of workers exposed to MWF aerosols and occupational noise. Prospective and longitudinal cohort studies are necessary to elucidate the causality of these associations.
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Affiliation(s)
- Li Zhou
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Beining Wu
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Minzhu Tang
- Wuxi Eighth People's Hospital, Wuxi, Jiangsu, China
| | - Geyang Li
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Weiling Chan
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Lin Song
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Jin Wang
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Lejia Zhu
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Lan Lin
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China
| | - Yulong Lian
- Department of Epidemiology and Medical Statistics, School of Public Health, Nantong University, Se Yuan Road, No. 9, Nantong, Jiangsu, 226001, China.
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Shrestha D, Picciotto S, LaValley MP, Liu S, Hammond SK, Weiner DE, Eisen EA, Applebaum KM. End-stage renal disease and metalworking fluid exposure. Occup Environ Med 2021; 79:24-31. [PMID: 34210793 DOI: 10.1136/oemed-2020-106715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 05/24/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Despite increasing prevalence of end-stage renal disease (ESRD), little attention has been directed to how occupational exposures may contribute to risk. Our objective was to investigate the relationship between metalworking fluids (MWF) and ESRD in a cohort of 36 703 male autoworkers. METHODS We accounted for competing risk of death, using the subdistribution hazard approach to estimate subhazard ratios (sHRs) and 95% CIs in models with cubic splines for cumulative exposure to MWF (straight, soluble or synthetic). RESULTS Based on 501 ESRD cases and 13 434 deaths, we did not observe an association between MWF and ESRD overall. We observed modest associations between MWF and ESRD classification of glomerulonephritis and diabetic nephropathy. For glomerulonephritis, the 60th percentile of straight MWF was associated with an 18% increased subhazard (sHR=1.18, 95% CI: 0.99 to 1.41). For diabetic nephropathy, the subhazard increased 28% at the 60th percentile of soluble MWF (sHR=1.28, 95% CI: 1.00 to 1.64). Differences by race suggest that black males may have higher disease rates following MWF exposure. CONCLUSIONS Exposure to straight and soluble MWF may be related to ESRD classification, though this relationship should be further examined.
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Affiliation(s)
- Deepika Shrestha
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, District of Columbia, USA
| | - Sally Picciotto
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Michael P LaValley
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, USA
| | - Sa Liu
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA.,School of Health Sciences, Purdue University, West Lafayette, Indiana, USA
| | - S Katharine Hammond
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Daniel E Weiner
- Division of Nephrology, Department of Medicine, Tufts Medical Center, Boston, Massachusetts, USA
| | - Ellen A Eisen
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Katie M Applebaum
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, District of Columbia, USA
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Deng C, Dang F, Gao J, Zhao H, Qi S, Gao M. Acute benzo[a]pyrene treatment causes different antioxidant response and DNA damage in liver, lung, brain, stomach and kidney. Heliyon 2018; 4:e00898. [PMID: 30456321 PMCID: PMC6234523 DOI: 10.1016/j.heliyon.2018.e00898] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 05/08/2018] [Accepted: 10/25/2018] [Indexed: 01/22/2023] Open
Abstract
Acute effects of oxidative damage induced by benzo[a]pyrene (B[a]P) on various organs are still not clear. In this study, we investigated oxidative stress and DNA damage in liver, lung, stomach, brain and kidney of ICR male mice induced by acute B[a]P treatment. B[a]P treatment led to a significant decrease at the different doses in body weight. For the variations of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), glutathione (GSH) and GSH/GSSG, significant increases were observed at 24 h, then decreased till 72 h after B[a]P injection. The increase percent indicated in a dose- dependent decrease manner. However, glutathione peroxidase (GPx), GSSG and MDA were significantly increased in a time- and dose-dependent increase manner. DNA damage showed the significant and top levels at 24 h, and increased in proportion to the doses of B[a]P treatment. The total induction could be indicated by the variation of MDA at 24 h after B[a]P injection and showed the following order of predominance: lung > liver > kidney = stomach > brain. This was further certificated by histopathological changes in the examined organs. Additionally, the levels of serum glutamic-oxaloacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT), and blood urea nitrogen (UN), creatinine were also significantly increased at 24 h after B[a]P injection. These findings suggested the disturbance of antioxidant responses and aggravation of DNA damages, and the different responses on various organs induced by acute B[a]P treatment in organism.
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Affiliation(s)
- Chun Deng
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Fan Dang
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Jianghong Gao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Deparment of Preventive Dentistry, Colleage of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710004, China
| | - Hongyan Zhao
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Shuyan Qi
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
| | - Meili Gao
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710049, China
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Adedara IA, Daramola YM, Dagunduro JO, Aiyegbusi MA, Farombi EO. Renoprotection of Kolaviron against benzo (A) pyrene-induced renal toxicity in rats. Ren Fail 2015; 37:497-504. [DOI: 10.3109/0886022x.2015.1006085] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Awodele O, Sulayman AA, Akintonwa A. Evaluation of haematological, hepatic and renal functions of petroleum tanker drivers in Lagos, Nigeria. Afr Health Sci 2014; 14:178-84. [PMID: 26060476 DOI: 10.4314/ahs.v14i1.27] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Hydrocarbons which are among the major components of petroleum products are considered toxic and have been implicated in a number of human diseases. Tanker drivers are continuously exposed to hydrocarbons by inhalation and most of these drivers do not use protective devices to prevent inhalation of petroleum products; nor do they visit hospital regularly for routine check-up. OBJECTIVE In view of this occupational hazard, we investigated the haematological, renal and hepatic functions of workers of petroleum tankers drivers in Lagos, Nigeria. METHOD Twenty-five tanker drivers' and fifteen control subjects were randomly selected based on the selection criteria of not smoking and working for minimum of 5 years as petroleum tanker driver. The liver, renal and haematological parameters were analyzed using automated clinical and haematological analyzers while the lipid peroxidation and antioxidant level tests were assayed using standard methods. RESULTS There were significant (p ≤ 0.05) increases in the levels of serum alanine amino transferase (31.14±13.72; 22.38±9.89), albumin (42.50±4.69; 45.36±1.74) and alkaline phosphatase (84.04±21.89; 62.04±23.33) of petroleum tanker drivers compared with the controls. A significant (p≤0.05) increase in the levels of creatinine, urea and white blood cells of the tanker drivers, compared with the controls, were also obtained. CONCLUSION The results have enormous health implications of continuous exposure to petroleum products reflected hepatic and renal damage of petroleum tanker drivers. Therefore, there is need for this group of workers to be sensitized on the importance of protective devises, regular medical checkup and management.
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Affiliation(s)
- Olufunsho Awodele
- Department of Pharmacology, Therapeutics & Toxicology, College of Medicine, University of Lagos, PMB 12003, Lagos-Nigeria
| | - Ademola A Sulayman
- Department of Pharmacology, Therapeutics & Toxicology, College of Medicine, University of Lagos, PMB 12003, Lagos-Nigeria
| | - Alade Akintonwa
- Department of Pharmacology, Therapeutics & Toxicology, College of Medicine, University of Lagos, PMB 12003, Lagos-Nigeria
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Jahangir T, Safhi MM, Sultana S, Ahmad S. Pluchea lanceolata protects against Benzo(a) pyrene induced renal toxicity and loss of DNA integrity. Interdiscip Toxicol 2013; 6:47-54. [PMID: 24170979 PMCID: PMC3795321 DOI: 10.2478/intox-2013-0009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 01/08/2013] [Accepted: 01/17/2013] [Indexed: 11/20/2022] Open
Abstract
Evidence from epidemiological, experimental and clinical trial data indicates that a plant based diet can reduce the risk of chronic diseases and reduces toxic effects. In the present study, we report the antioxidant and anticlastogenic activity of Pluchea lanceolata (PL), an important medicinal plant, in both in vitro and in vivo model. Benzo(a)pyrene (B(a)P) administration leads to depletion of renal glutathione and its metabolizing enzymes. Pretreatment with PL (100 and 200 mg /kg b.wt) restored renal glutathione content and its dependent enzymes significantly (p<0.001) with simultaneous increase in catalase(CAT), quinone reductase(QR) in mouse kidney. Prophylactic administration of PL prior to B (a) P administration significantly decreased the malondialdehyde(MDA), H2O2 and xanthineoxidase (XO) levels at a significance of p<0.001, at both the doses. PL extract pretreated groups showed marked inhibition in B(a)P induced micronuclei formation in mouse bone marrow cells with simultaneous restoration of DNA integrity, viz. alkaline unwinding assay and DNA damage shown by gel-electrophoresis. HPTLC confirms the presence of quercetin in plant extract which could be responsible for PL protecting efficacy. In conclusion, the present findings strongly support the antioxidant efficacy of PL, possibly by modulation of antioxidant armory.
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Affiliation(s)
- Tamanna Jahangir
- Department of Pharmacology, College of Pharmacy, Jazan University, Saudi Arabia
| | - Mohammed M. Safhi
- Department of Pharmacology, College of Pharmacy, Jazan University, Saudi Arabia
| | - Sarwat Sultana
- Department of Medical Elementology and Toxicology, Hamdard University,India
| | - Sayeed Ahmad
- Department of Pharmacognosy, Hamdard University, India
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Qin W, Xu Z, Lu Y, Zeng C, Zheng C, Wang S, Liu Z. Mixed organic solvents induce renal injury in rats. PLoS One 2012; 7:e45873. [PMID: 23029287 PMCID: PMC3448683 DOI: 10.1371/journal.pone.0045873] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Accepted: 08/27/2012] [Indexed: 11/26/2022] Open
Abstract
To investigate the injury effects of organic solvents on kidney, an animal model of Sprague-Dawley (SD) rats treated with mixed organic solvents via inhalation was generated and characterized. The mixed organic solvents consisted of gasoline, dimethylbenzene and formaldehyde (GDF) in the ratio of 2∶2:1, and were used at 12,000 PPM to treat the rats twice a day, each for 3 hours. Proteinuria appeared in the rats after exposure for 5–6 weeks. The incidences of proteinuria in male and female rats after exposure for 12 weeks were 43.8% (7/16) and 25% (4/16), respectively. Urinary N-Acetyl-β-(D)-Glucosaminidase (NAG) activity was increased significantly after exposure for 4 weeks. Histological examination revealed remarkable injuries in the proximal renal tubules, including tubular epithelial cell detachment, cloud swelling and vacuole formation in the proximal tubular cells, as well as proliferation of parietal epithelium and tubular reflux in glomeruli. Ultrastructural examination found that brush border and cytoplasm of tubular epithelial cell were dropped, that tubular epithelial cells were partially disintegrated, and that the mitochondria of tubular epithelial cells were degenerated and lost. In addition to tubular lesions, glomerular damages were also observed, including segmental foot process fusion and loss of foot process covering on glomerular basement membrane (GBM). Immunofluorescence staining indicated that the expression of nephrin and podocin were both decreased after exposure of GDF. In contrast, increased expression of desmin, a marker of podocyte injury, was found in some areas of a glomerulus. TUNEL staining showed that GDF induced apoptosis in tubular cells and glomerular cells. These studies demonstrate that GDF can induce both severe proximal tubular damage and podocyte injury in rats, and the tubular lesions appear earlier than that of glomeruli.
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Affiliation(s)
- Weisong Qin
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Ramos KS, Nanez A. Genetic regulatory networks of nephrogenesis: deregulation of WT1 splicing by benzo(a)pyrene. ACTA ACUST UNITED AC 2009; 87:192-7. [PMID: 19530133 DOI: 10.1002/bdrc.20148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Recent studies have identified AHR as a master regulator of Wilms' tumor suppressor gene (WT1) signaling in the developing kidney. Activation of AHR signaling by environmental chemical is associated with proteasome-mediated degradation of AHR protein, disruption of WT1 alternative splicing, and marked alterations in the regulation of genetic programs of developmental progression in the developing kidney. The complexity of genetic regulatory networks of nephrogenesis controlled by AHR-WT1 interactions will be discussed here with particular emphasis given to the biological and medical consequences that may result from deficits in nephrogenesis that compromise reserve capacity and renal function later in life. Understanding the impact of early-life environmental exposures to chemicals that disrupt AHR signaling can help minimize negative health consequences to pregnant women and their offspring.
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Affiliation(s)
- Kenneth S Ramos
- Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Delia Baxter Building, Room 227, Louisville, KY 40292, USA.
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Lim J, Sanders RA, Yeager RL, Millsap DS, Watkins JB, Eells JT, Henshel DS. Attenuation of TCDD-induced oxidative stress by 670 nm photobiomodulation in developmental chicken kidney. J Biochem Mol Toxicol 2008; 22:230-9. [PMID: 18752309 DOI: 10.1002/jbt.20233] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), a potent developmental teratogen inducing oxidative stress and sublethal changes in multiple organs, provokes developmental renal injuries. In this study, we investigated TCDD-induced biochemical changes and the therapeutic efficacy of photobiomodulation (670 nm; 4 J/cm(2)) on oxidative stress in chicken kidneys during development. Eggs were injected once prior to incubation with TCDD (2 pg/g or 200 pg/g) or sunflower oil vehicle control. Half of the eggs in each dose group were then treated with red light once per day through embryonic day 20 (E20). Upon hatching at E21, the kidneys were collected and assayed for glutathione peroxidase, glutathione reductase, catalase, superoxide dimutase, and glutathione-S-transferase activities, as well as reduced glutathione and ATP levels, and lipid peroxidation. TCDD exposure alone suppressed the activity of the antioxidant enzymes, increased lipid peroxidation, and depleted available ATP. The biochemical indicators of oxidative and energy stress in the kidney were reversed by daily phototherapy, restoring ATP and glutathione contents and increasing antioxidant enzyme activities to control levels. Photobiomodulation also normalized the level of lipid peroxidation increased by TCDD exposure. The results of this study suggest that 670 nm photobiomodulation may be useful as a noninvasive treatment for renal injury resulting from chemically induced cellular oxidative and energy stress.
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Affiliation(s)
- Jinhwan Lim
- School of Public and Environmental Affairs, Indiana University, Bloomington, IN 47405, USA
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Ramos KS, Steffen MC, Falahatpisheh MH, Nanez A. From genomics to mechanistic insight: a global perspective on molecular deficits induced by environmental agents. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2007; 48:395-9. [PMID: 17567845 DOI: 10.1002/em.20310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
As the postgenomic era continues to unfold, a new wave of scientific investigation is upon us focusing on the application of genomic technologies to study the meanings encrypted on the DNA code and the responses of living organisms to changes in their environment. Recent functional genomics studies in this laboratory have focused on the role of the aryl hydrocarbon receptor, a ubiquitous transcription factor, in genetic programming during renal development. Also of interest is the application of genomics investigations to the study of chronic medical conditions associated with early life exposures to environmental contaminants. Molecular evidence is discussed in this review within the framework of human molecular medicine.
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Affiliation(s)
- Kenneth S Ramos
- Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, University of Louisville, Louisville, Kentucky 40202, USA.
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Valentovic MA, Alejandro N, Betts Carpenter A, Brown PI, Ramos K. Streptozotocin (STZ) diabetes enhances benzo(alpha)pyrene induced renal injury in Sprague Dawley rats. Toxicol Lett 2006; 164:214-20. [PMID: 16460892 DOI: 10.1016/j.toxlet.2005.12.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Revised: 12/23/2005] [Accepted: 12/23/2005] [Indexed: 02/01/2023]
Abstract
Information is lacking regarding the biological response to environmental chemicals in the context of pre-existing disease. Benzo(alpha)pyrene (BaP), a polycyclic aromatic hydrocarbon, is a byproduct of combustion that causes renal injury and elicits a nephropathic response. This study evaluated the nephrotoxicity of BaP in normoglycemic and diabetic rats. Female Sprague Dawley rats were divided into four groups: normoglycemic-vehicle (NV), normoglycemic-BaP (N-BaP), diabetic-vehicle (DV) and diabetic-BaP (D-BaP). Diabetes was induced by intraperitoneal (ip) injection of streptozotocin (60 mg/kg, 1 ml/kg). Rats were injected (ip) with vehicle or 10 mg/kg BaP (1 ml/kg) once per week for 5 weeks. Urinary protein and albumin, plasma creatinine and light microscopy were performed to assess the effects of BaP on kidney function. Diabetes was confirmed by plasma glucose levels >400 mg/dl in the DV and D-BaP groups. BaP increased kidney weight and blood urea nitrogen (BUN) levels in the D-BaP relative to the DV group. No change in BUN was observed following 5 weeks of BaP treatment in the normoglycemic animals, however, kidney weight was increased (p=0.013) in the N-BaP relative to the NV animals. STZ diabetes increased susceptibility to BaP mediated renal damage following repeated treatment for 5 weeks when compared to age matched normoglycemic rats.
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Affiliation(s)
- Monica A Valentovic
- Department of Pharmacology, Joan C. Edwards School Of Medicine, Marshall University1532 Spring Valley Drive, Huntington, WV 25704-9388, USA.
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