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Tang J, Zhang N, Chen S, Hu K, Li Y, Fang Y, Wu Z, Zhang Y, Xu L. Cadmium (Cd) and 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) co-exposure induces acute kidney injury through oxidative stress and RIPK3-dependent necroptosis. ENVIRONMENTAL TOXICOLOGY 2023; 38:2332-2343. [PMID: 37357614 DOI: 10.1002/tox.23869] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/27/2023]
Abstract
Environmental pollution is complex, and co-exposure can accurately reflect the true environmental conditions that are important for assessment of human health. Cadmium (Cd) is a widespread toxicant that can cause acute kidney injury (AKI), while its combined effect with 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) is not fully understood. Thus, we used an in vivo model where C57BL/6J mice were treated with low dietary intake of Cd (5 mg/kg/day) and/or BDE-47 (1 mg/kg/day) for 28 days to examine AKI, and in vitro experiments to investigate the possible mechanism. Results showed that Cd or BDE-47 caused pathological kidney damage, accompanied by elevated urea nitrogen (BUN) and urinary creatinine, as well as increased interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α), and reduced IL-10 in kidney tissues. In vitro Cd or BDE-47 exposure decreased cell viability and induced cell swelling and blebbing of human embryonic kidney 293 (HEK-293) and renal tubular epithelial cell lines (HKCs), and changes in co-exposure was larger than that in Cd and BDE-47 treatment. Oxidative stress indicators of the reactive oxygen species (ROS) and malondialdehyde (MDA) were elevated, while the antioxidant superoxide dismutase (SOD) was decreased. Necrosis occurred with increased lactate dehydrogenase (LDH) release and propidium iodide (PI) staining, which was attenuated by the ROS scavenger N-acetyl-L-cysteine (NAC). Furthermore, necroptotic genes of receptor-interacting protein kinase-3 (RIPK3), classical mixed lineage kinase domain-like protein-dependent (MLKL), IL-1β and TNF-α were up-regulated, whereas RIPK1 was down-regulated, which was attenuated by the RIPK3 inhibitor GSK872. These findings demonstrate that Cd or BDE-47 alone produces kidney toxicities, and co-exposure poses an additive effect, resulting in AKI via inducing oxidative stress and regulating RIPK3-dependent necroptosis, which offers a further mechanistic understanding for kidney damage, and the combined effect of environmental pollutants should be noticed.
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Affiliation(s)
- Jie Tang
- Department of Pathology, Jiaxing key laboratory of infectious diseases and bacterial resistance research, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing University, Jiaxing, China
| | - Nenghua Zhang
- Department of Pathology, Jiaxing key laboratory of infectious diseases and bacterial resistance research, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing University, Jiaxing, China
| | - Shipiao Chen
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
| | - Kewei Hu
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
| | - Yintao Li
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
| | - Yipeng Fang
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
| | - Zhenqiang Wu
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
| | - Yi Zhang
- Department of Pathology, Jiaxing key laboratory of infectious diseases and bacterial resistance research, Jiaxing Hospital of Traditional Chinese Medicine, Jiaxing University, Jiaxing, China
| | - Long Xu
- Department of Preventive Medicine, Forensic and Pathology Laboratory, Institute of Forensic Science, College of Medicine, Jiaxing University, Jiaxing, China
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Sartori G, Neto JSS, Pesarico AP, Back DF, Nogueira CW, Zeni G. Bis-vinyl selenides obtained via iron(iii) catalyzed addition of PhSeSePh to alkynes: synthesis and antinociceptive activity. Org Biomol Chem 2013; 11:1199-208. [DOI: 10.1039/c2ob27064a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de Freitas ML, da Silva ARH, Roman SS, Brandão R. Effects of 4,4'-dichloro-diphenyl diselenide (ClPhSe)2 on toxicity induced by mercuric chloride in mice: a comparative study with diphenyl diselenide (PhSe)2. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 34:985-994. [PMID: 22981437 DOI: 10.1016/j.etap.2012.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/17/2012] [Accepted: 07/25/2012] [Indexed: 06/01/2023]
Abstract
The effects of 4,4'-dichloro-diphenyl diselenide (ClPhSe)(2) on the toxicity induced by mercuric chloride (HgCl(2)) were investigated and compared with diphenyl diselenide (PhSe)(2). Mice received HgCl(2) for three days and, on the third day, received (PhSe)(2) or (ClPhSe)(2). The results verified that the administration of (ClPhSe)(2) in mice exposed to HgCl(2) increased renal δ-aminolevulinate dehydratase (δ-ALA-D), Na(+), K(+)-ATPase activities and non-protein thiol (NPSH) levels and also decreased thiobarbituric acid-reactive substances (TBARS) and ascorbic acid levels, when compared to mice exposed to HgCl(2)+(PhSe)(2). Plasma and urinary protein, hemoglobin and hematocrit levels and histological parameters were also ameliorated in mice exposed to HgCl(2)+(ClPhSe)(2). In addition, the hepatic damage in mice exposed to HgCl(2)+(PhSe)(2) was reduced in animals exposed to (ClPhSe)(2). To sum up, the introduction of a functional group (chloro) in the aromatic ring of diaryl diselenide reduced the toxicity of this compound in liver and kidney of mice exposed to HgCl(2).
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Affiliation(s)
- Mayara L de Freitas
- Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900 RS, Brazil
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Shinomol GK, Bharath MMS, Muralidhara. Pretreatment with Bacopa monnieri extract offsets 3-nitropropionic acid induced mitochondrial oxidative stress and dysfunctions in the striatum of prepubertal mouse brain. Can J Physiol Pharmacol 2012; 90:595-606. [PMID: 22472017 DOI: 10.1139/y2012-030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The present investigation was designed to determine the efficacy of Bacopa monnieri (Brahmi; BM) to offset 3-nitropropionic acid (3-NPA) induced oxidative stress and mitochondrial dysfunction in dopaminergic (N27) cells and prepubertal mouse brain. Pretreatment of N27 cells with BM ethanolic extract (BME) significantly attenuated 3-NPA-induced cytotoxicity. Further, we determined the degree of oxidative stress induction, redox status, enzymic antioxidants, and protein oxidation in the striatal mitochondria of mice given BME prophylaxis followed by 3-NPA challenge. While 3-NPA-induced marked oxidative stress in the mitochondria of the striatum, BME prophylaxis markedly prevented 3-NPA-induced oxidative dysfunctions and depletion of reduced glutathione and thiol levels. The activities of antioxidant enzymes (superoxide dismutase, glutathione peroxidase, glutathione reductase, thioredoxin reductase), Na(+),K(+)-ATPase, and citric acid cycle enzymes in the striatum discernible among 3-NPA mice were significantly restored with BME prophylaxis. Interestingly, BME offered protection against 3-NPA-induced mitochondrial dysfunctions as evidenced by the restoration of the activities of ETC enzymes (NADH:ubiquinone oxidoreductase, NADH:cytochrome c reductase, succinate-ubiquinone oxidoreductase, and cytochrome c oxidase) and mitochondrial viability. We hypothesize that the neuroprotective effects of BME may be wholly or in part related to its propensity to scavenge free radicals, maintain redox status, and upregulate antioxidant machinery in striatal mitochondria.
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Affiliation(s)
- George K Shinomol
- Department of Neurochemistry, National Institute of Mental Health and Neurosciences, Bengaluru, India
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Ligor M, Olszowy P, Buszewski B. Application of medical and analytical methods in Lyme borreliosis monitoring. Anal Bioanal Chem 2012; 402:2233-48. [PMID: 22015476 PMCID: PMC3281207 DOI: 10.1007/s00216-011-5451-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/17/2011] [Accepted: 09/26/2011] [Indexed: 11/08/2022]
Abstract
Lyme borreliosis (LB) is one of the most common tick-borne diseases in the northern hemisphere. It is a chronic inflammatory disease caused by the spirochaete Borrelia burgdorferi. In its early stages, pathological skin lesions, namely erythema chronicum migrans, appear. The lesions, usually localised at the site of the bite, may become visible from a few weeks up to 3 months after the infection. Predominant clinical symptoms of the disease also involve joint malfunctions and neurological or cardiac disorders. Lyme disease, in all its stages, may be successfully treated with antibiotics. The best results, however, are obtained in its early stages. In order to diagnose the disease, numerous medical or laboratory techniques have been developed. They are applied to confirm the presence of intact spirochaetes or spirochaete components such as DNA or proteins in tick vectors, reservoir hosts or patients. The methods used for the determination of LB biomarkers have also been reviewed. These biomarkers are formed during the lipid peroxidation process. The formation of peroxidation products generated by human organisms is directly associated with oxidative stress. Apart from aldehydes (malondialdehyde and 4-hydroxy-2-nonenal), many other unsaturated components such as isoprostenes and neuroprostane are obtained. The fast determination of these compounds in encephalic fluid, urine or plasma, especially in early stages of the disease, enables its treatment. Various analytical techniques which allow the determination of the aforementioned biomarkers have been reported. These include spectrophotometry as well as liquid and gas chromatography. The analytical procedure also requires the application of a derivatization step by the use of selected reagents.
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Affiliation(s)
- Magdalena Ligor
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St., 87-100 Toruń, Poland
| | - Paweł Olszowy
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St., 87-100 Toruń, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7 St., 87-100 Toruń, Poland
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Chagas PM, Bortolatto CF, Wilhelm EA, Nogueira CW. High doses of 2,2'-dithienyl diselenide cause systemic toxicity in rats: an in vitro and in vivo study. J Appl Toxicol 2011; 33:480-7. [PMID: 22180340 DOI: 10.1002/jat.1777] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/21/2011] [Accepted: 10/23/2011] [Indexed: 11/09/2022]
Abstract
Organoselenium compounds have important pharmacological properties. However, these compounds can cause toxicity, typically related to oxidation of endogenous thiols. The aim of this study was to investigate whether 2,2'-dithienyl diselenide (DTDS) has potential toxicity in vitro and in vivo. Therefore, sulfhydryl-containing enzyme activities, δ-aminolevulinic acid dehydratase (δ-ALA-D) and Na(+) -K(+) -ATPase were used to predict DTDS toxicity in rat brain homogenate in vitro. In in vivo experiments, a DTDS administration (50 or 100 mg kg(-1) , p.o.) to rats was performed and toxicological parameters were determined. DTDS inhibited δ-ALA-D (IC50 2 µm) and Na(+) -K(+) -ATPase (IC50 17 µm) activities in vitro. The inhibitory effect of DTDS on δ-ALA-D and Na(+) -K(+) -ATPase activities was restored by dithiothreitol. DTDS (5-25 µm) elicited a thiol oxidase-like activity. In vivo, DTDS (50 and 100 mg kg(-1) ) caused systemic toxicity, evidenced by a decrease in water and food intakes and body weight gain, as well as the death of rats. DTDS at the dose of 100 mg kg(-1) increased plasma alanine and aspartate aminotransferase activities and decreased urea levels. At 50 and 100 mg kg(-1) , it increased lipid peroxidation levels. At the highest dose, DTDS inhibited δ-ALA-D activity. By contrast, Na(+) -K(+) -ATPase activity and antioxidant defense were not altered in the brains of rats exposed to DTDS. In conclusion, interaction with the cisteinyl residues seems to mediate the inhibitory effect of DTDS on sulfhydryl-containing enzymes in vitro. In addition, high oral doses of DTDS induce toxicity in rats.
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Affiliation(s)
- Pietro Maria Chagas
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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Bonfanti G, Ceolin RB, Valcorte T, De Bona KS, de Lucca L, Gonçalves TL, Moretto MB. δ-Aminolevulinate dehydratase activity in type 2 diabetic patients and its association with lipid profile and oxidative stress. Clin Biochem 2011; 44:1105-1109. [PMID: 21762684 DOI: 10.1016/j.clinbiochem.2011.06.980] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 06/17/2011] [Accepted: 06/18/2011] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To investigate the activity of δ-Aminolevulinate dehydratase (δ-ALA-D) and its possible relationship with oxidative status, lipid profile, body mass index (BMI) in type 2 diabetics (DM2) patients. DESIGN AND METHODS δ-ALA-D activity and reactivation index, as well as markers of oxidative stress and biochemical and anthropometrics parameters were determined in DM2 patients (n = 63) and controls (n = 63). RESULTS There was a decreased δ-ALA-D activity and a higher reactivation index (p<0.05) in DM2 patients besides an elevated level of oxidative stress. Disturbances on lipid profile were related to the enzymatic activity and BMI also was correlated with oxidative level in DM2 patients (p<0.05). CONCLUSION There is an association between oxidative stress, abnormalities on lipid profile, distribution of body fat and δ-ALA-D activity inhibition as well as the enzyme is more oxidized in the DM2 suggesting that it would be a good biomarker for assessing prejudice in chronic metabolic processes.
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Affiliation(s)
- Gabriela Bonfanti
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Ronise B Ceolin
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Tiago Valcorte
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Karine S De Bona
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Leidiane de Lucca
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Thissiane L Gonçalves
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Maria Beatriz Moretto
- Postgraduate Program in Pharmacology, Department of Clinical and Toxicology Analysis, Center of Healthy Sciences, Federal University of Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
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Brandão R, Moresco RN, Bellé LP, Leite MR, Freitas ML, Bianchini A, Nogueira CW. Diphenyl diselenide potentiates nephrotoxicity induced by mercuric chloride in mice. J Appl Toxicol 2011; 31:773-82. [DOI: 10.1002/jat.1631] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 10/27/2010] [Accepted: 10/27/2010] [Indexed: 11/12/2022]
Affiliation(s)
- Ricardo Brandão
- Departamento de Análises Clínicas e Toxicológicas; Centro de Ciências da Saúde; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
| | - Rafael N. Moresco
- Departamento de Análises Clínicas e Toxicológicas; Centro de Ciências da Saúde; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
| | - Luziane P. Bellé
- Departamento de Análises Clínicas e Toxicológicas; Centro de Ciências da Saúde; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
| | - Marlon R. Leite
- Departamento de Química; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
| | - Mayara L. Freitas
- Departamento de Química; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
| | - Adalto Bianchini
- Departamento de Ciências Fisiológicas; Universidade Federal do Rio Grande-FURG; CEP 96201-900; Rio Grande; RS; Brazil
| | - Cristina W. Nogueira
- Departamento de Química; Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; CEP 97105-900; Santa Maria; RS; Brazil
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Inhibition of hepatic δ-aminolevulinate dehydratase activity induced by mercuric chloride is potentiated by N-acetylcysteine in vitro. Food Chem Toxicol 2010; 49:305-8. [PMID: 21056077 DOI: 10.1016/j.fct.2010.10.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 10/27/2010] [Accepted: 10/29/2010] [Indexed: 11/21/2022]
Abstract
Mercuric chloride (HgCl)(2) is a toxic metal that causes oxidative damage in several tissues. N-acetylcysteine (NAC) is a sulfhydryl compound with antioxidant activity. In the present study, we investigated the in vitro effects of the association between HgCl(2) and NAC in tissues of mice. For this purpose, we evaluated the in vitro effect of HgCl(2)+NAC association on δ-aminolevulinate dehydratase (δ-ALA-D) activity and on thiobarbituric acid reactive substances (TBARS) levels in liver and kidney of mice. The results demonstrate that HgCl(2) inhibited δ-ALA-D activity in both tissues. Hepatic δ-ALA-D activity inhibited by HgCl(2) was potentiated by the highest concentration of NAC. The inhibition of hepatic δ-ALA-D activity seems to be related to sulfhydryl groups oxidation of the enzyme. We observed also that HgCl(2) increased TBARS levels in kidney and liver. Hepatic TBARS levels were reduced by NAC, at higher concentration. In contrast, NAC, at higher concentration, increased renal TBARS levels. In conclusion, the inhibition of hepatic δ-aminolevulinate dehydratase activity induced by HgCl(2) is potentiated by NAC in vitro, and this effect is not related to hepatic lipid peroxidation.
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Puntel GO, Carvalho NR, Amaral GP, Lobato LD, Silveira SO, Daubermann MF, Barbosa NV, Rocha JBT, Soares FAA. Therapeutic cold: An effective kind to modulate the oxidative damage resulting of a skeletal muscle contusion. Free Radic Res 2010; 45:125-38. [DOI: 10.3109/10715762.2010.517252] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Grotto D, Valentini J, Fillion M, Passos CJS, Garcia SC, Mergler D, Barbosa F. Mercury exposure and oxidative stress in communities of the Brazilian Amazon. THE SCIENCE OF THE TOTAL ENVIRONMENT 2010; 408:806-811. [PMID: 19914681 DOI: 10.1016/j.scitotenv.2009.10.053] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 10/11/2009] [Accepted: 10/16/2009] [Indexed: 05/28/2023]
Abstract
This study was designed to assess possible associations between biomarkers of mercury (Hg) exposure and oxidative stress in fish-eating Amazonian communities. Clinical samples were obtained from riparians living in the Brazilian Amazon. Biomarkers of oxidative stress (glutathione - GSH, glutathione peroxidase - GSH-Px, catalase - CAT, activity and reactivation index of delta-aminolevulinate dehydratase - ALA-D (R%) were determined in blood. Total Hg was measured in whole blood (B-Hg), plasma (P-Hg) and hair (H-Hg). Association between biomarkers of Hg exposure and oxidative stress were examined using multiple regression models, including age, gender, alcohol consumption, smoking status, fish consumption and then stratified for gender. Significant inverse relations were observed between GSH-Px, GSH, CAT, ALA-D activity and B-Hg or H-Hg (p<0.05). ALA-D reactivation index was positively related to B-Hg (p<0.0001). P-Hg was directly related to ALA-D reactivation index and inversely associated with GSH-Px, GSH, and ALA-D activity (p<0.05). When stratified for gender, women showed significant inverse associations between all biomarkers of Hg exposure and CAT (p<0.05) or GSH (p<0.05), while for men only P-Hg showed a significant inverse relation with GSH (p<0.001). Our results clearly demonstrated an association between Hg exposure and oxidative stress. Moreover, for B-Hg, P-Hg and H-Hg gender differences were present.
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Affiliation(s)
- Denise Grotto
- Laboratório de Toxicologia e Essencialidade de Metais, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo
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Disubstituted diaryl diselenides inhibit δ-ALA-D and Na+, K+-ATPase activities in rat brain homogenates in vitro. Mol Cell Biochem 2009; 332:17-24. [DOI: 10.1007/s11010-009-0169-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Accepted: 05/21/2009] [Indexed: 11/25/2022]
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Souza ACG, Luchese C, Santos Neto JS, Nogueira CW. Antioxidant effect of a novel class of telluroacetilene compounds: studies in vitro and in vivo. Life Sci 2009; 84:351-7. [PMID: 19167407 DOI: 10.1016/j.lfs.2008.12.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 11/20/2008] [Accepted: 12/29/2008] [Indexed: 10/21/2022]
Abstract
AIMS The effect of telluroacetylenes a-d on pharmacological assays was investigated in vitro. A second objective of this study was to investigate the antioxidant action of compound b against the oxidative damage induced by sodium nitroprusside (SNP) in mouse brain. MAIN METHODS In in vitro experiments, lipid peroxidation (LP) and protein carbonyl (PC) levels and delta-aminolevulinate dehydratase (delta-ALA-D) activity were carried out in rat brain homogenate. The thiol peroxidase-like activity and DPPH radical scavenging of telluroacetylenes a-d were investigated. In in vivo experiments, mice received SNP (0.335 micromol per site) intra cerebroventricular (i.c.v.) thirty minutes after oral administration of telluroacetylene b (10 mg/kg). After 1 h, animals were euthanized. The levels of LP and delta-ALA-D, catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione S-transferase (GST) activities were carried out in mouse brain homogenate. KEY FINDINGS Telluroacetylenes a-d, at low muM range, reduced LP and PC levels in rat brain homogenate. Telluroacetylenes a-d showed effect of scavenging DPPH radicals. delta-ALA-D activity was inhibited by telloruacetylenes a-d, at high muM range, in rat brain homogenate. Brains of mice treated with SNP showed an increase in LP and the reduction in delta-ALA-D, GR and GST activities. Telluroacetylene b protected against the oxidative stress caused by SNP in brain of rats. SIGNIFICANCE The results support an antioxidant effect of telluroacetylenes a-d in vitro. Telluroacetylene b protected against oxidative damage caused by SNP in mouse brain, suggesting an antioxidant effect of this compound.
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Affiliation(s)
- Ana Cristina G Souza
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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The influence of the hemodialysis treatment time under oxidative stress biomarkers in chronic renal failure patients. Biomed Pharmacother 2008; 62:378-82. [DOI: 10.1016/j.biopha.2007.10.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2007] [Revised: 08/16/2007] [Accepted: 10/24/2007] [Indexed: 11/17/2022] Open
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Gioda CR, Lissner LA, Pretto A, da Rocha JBT, Schetinger MRC, Neto JR, Morsch VM, Loro VL. Exposure to sublethal concentrations of Zn(II) and Cu(II) changes biochemical parameters in Leporinus obtusidens. CHEMOSPHERE 2007; 69:170-5. [PMID: 17560625 DOI: 10.1016/j.chemosphere.2007.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2006] [Revised: 02/13/2007] [Accepted: 04/04/2007] [Indexed: 05/15/2023]
Abstract
The aim of the present study was to assess the effect of the exposure of Leporinus obtusidens (Piava) to zinc and copper on catalase activity in the liver, delta-aminolevulinate dehidratase (delta-ALA-D) activity in liver, muscle, brain and kidney, and thiobarbituric reactive species (TBARS) in brain, muscle and liver. In addition, hematological parameters were measured in blood. The fish were exposed to 10% and 20% of the derived LC(50) values, 2.3 and 4.6 mg Zn l(-1) and 0.02 and 0.04 mg Cu l(-1), and sampled on days 30 and 45. Exposure to Zn(II) and Cu(II) decreased hematological parameters and also delta-ALA-D activity mainly in liver and kidney at all concentrations tested. Liver catalase activity increased after zinc or copper exposure at all concentrations and exposure times tested. Thiobarbituric reactive substances (TBARS) increased in the brain and liver of the fish exposed to zinc(II) for 45 days at both metal concentrations. In muscle, zinc(II) increased TBARS production at both exposure times and concentrations tested. Copper(II) exposure reduced the TBARS levels in liver at both concentrations and times tested. In brain, there was a decrease in TBARS levels only after 45 days of exposure. In muscle, this decrease was observed after 30 days of exposure at both concentrations. Although zinc and copper are required as microelements in the cells, our results showed that the sublethal concentrations of these metals can change biochemical parameters which may alter normal cellular function. These results pointed out the differential sensitivity of fish tissues to essential, but also toxic and environmentally relevant metals. The alterations of distinct biochemical parameters in fish tissues certainly contribute to the toxicity of Zn and Cu, and are of importance for an area that has been growing and has still been poorly explored in the literature.
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Affiliation(s)
- C R Gioda
- Department of Chemistry, Federal University of Santa Maria, 97105.900 Santa Maria, RS, Brazil
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16
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Souza JB, Rocha JBT, Nogueira CW, Borges VC, Kaizer RR, Morsch VM, Dressler VL, Martins AF, Flores EMM, Schetinger MRC. Delta-aminolevulinate dehydratase (δ-ALA-D) activity in diabetes and hypothyroidism. Clin Biochem 2007; 40:321-5. [PMID: 17291479 DOI: 10.1016/j.clinbiochem.2006.11.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Revised: 11/17/2006] [Accepted: 11/19/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVES This study analyzed the influence of type 2 diabetes mellitus and primary hypothyroidism on the activity of the delta-aminolevulinate dehydratase (delta-ALA-D) in human blood. DESIGN AND METHODS Delta-ALA-D enzyme activity was determined in normal (healthy) people (n=29), compensated (DMC, n=11) and non-compensated diabetic patients (NDMC, n=23), and in patients with compensated (CH, n=19) and non-compensated primary hypothyroidism (NCH, n=10). The determination of lead, copper, zinc and magnesium was performed by graphite furnace atomic absorption spectrometry. RESULTS This study shows that delta-ALA-D activity was decreased (P<0.05) in situations associated to hyperglycemia maintained for long periods (HbA1c high). Another finding of this study suggests that states of hypofunction of the thyroid gland, when non-compensated, increase the activity of delta-ALA-D (P<0.001). In addition, copper was elevated in HNC, zinc was diminished in DMC, HC and HNC, and magnesium was diminished in the HNC group. CONCLUSION This result points out that there is a correlation among diabetes, hypothyroidism and delta-ALA-D activity.
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Affiliation(s)
- João B Souza
- Departamento de Química, Centro de Ciências Naturais e Exatas Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
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17
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Brandão R, Santos FW, Zeni G, Rocha JBT, Nogueira CW. DMPS and N-acetylcysteine induced renal toxicity in mice exposed to mercury. Biometals 2006; 19:389-98. [PMID: 16841248 DOI: 10.1007/s10534-005-4020-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2005] [Accepted: 10/12/2005] [Indexed: 01/17/2023]
Abstract
Acute effects of mercuric chloride (HgCl2) were evaluated on mice. Mice received a single dose of HgCl2 (4.6 mg/kg, subcutaneously) for three consecutive days. Thirty minutes after the last injection with HgCl2, mice received one single injection of 2,3-dimercapto-1-propanesulfonic acid (DMPS) or N-acetylcysteine (NAC) or diphenyl diselenide (PhSe)2. DMPS, NAC and (PhSe)2 were utilized as therapy against mercury exposure. At 24 h after the last HgCl2 injection, blood, liver and kidney samples were collected. delta-Aminolevulinate dehydratase (delta-ALA-D) and Na+, K- (+) ATPase activities, thiobarbituric acid-reactive substances (TBARS), non-protein thiols (NPSH) and ascorbic acid concentrations were evaluated. Plasma aspartate (AST) and alanine (ALT) aminotransferase activities, as well as urea and creatinine levels were determined. The group of mice exposed to Hg + (PhSe)2 presented 100% of lethality. Exposure with HgCl2 caused a decrease on the body weight gain and treatments did not modify this parameter. delta-ALA-D, AST and ALT activities, TBARS, ascorbic acid levels and NPSH (hepatic and erythrocytic) levels were not changed after HgCl2 exposure. HgCl2 caused an increase in renal NPSH content and therapies did not modify these levels. Mice treated with (PhSe)2, Hg + NAC and Hg + DMPS presented a reduction in plasma NPSH levels. Creatinine and urea levels were increased in mice exposed to Hg + NAC, while Hg + DMPS group presented an increase only in urea level. Na+, K- (+) ATPase activity was inhibited in mice exposed to Hg + DMPS and Hg + NAC. In conclusion, therapies with (PhSe)2, DMPS and NAC following mercury exposure must be better studied because the formation of more toxic complexes with mercury, which can mainly damage renal tissue.
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Affiliation(s)
- Ricardo Brandão
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
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18
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Gonçalves TL, Erthal F, Corte CLD, Müller LG, Piovezan CM, Nogueira CW, Rocha JBT. Involvement of oxidative stress in the pre-malignant and malignant states of cervical cancer in women. Clin Biochem 2005; 38:1071-5. [PMID: 16269141 DOI: 10.1016/j.clinbiochem.2005.09.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2004] [Accepted: 09/27/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVES To evaluate the potential role of oxidative stress in the evolution of cervical cancer, including its pre-malignant states. DESIGN AND METHODS Erythrocytes thiobarbituric acid reactive substances (TBARS) levels, plasma vitamin C and thiol content and total blood delta-ALA-D levels were estimated in 46 untreated cervical cancer and pre-malignant patients and in 46 age-sex-matched controls. RESULTS Erythrocytes from patients, regardless of disease state, pre-malignant (low squamous intraepithelial lesion--LSIL and high squamous intraepithelial lesion--HSIL) or cancer, showed a significant 2-3 times increase in TBARS levels (P<0.01). Plasma vitamin C was lower in the carcinoma group (P<0.01). The reactivation index of delta-aminolevulinate dehydratase (delta-ALA-D) was higher in the patient group, when compared to control (P<0.01). CONCLUSION LSIL, HSIL or cervical cancer can be associated with changes in 3 indicators of oxidative stress: increase in erythrocyte TBARS, ALA-D reactivation index and a decrease in vitamin C content, that may play an important role in carcinogenesis.
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Affiliation(s)
- Thissiane L Gonçalves
- Departamento de Química, CCNE, Universidade Federal de Santa Maria, 97105-900 Santa Maria, R.S., Brazil
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19
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Santos FW, Zeni G, Rocha JBT, do Nascimento PC, Marques MS, Nogueira CW. Efficacy of 2,3-dimercapto-1-propanesulfonic acid (DMPS) and diphenyl diselenide on cadmium induced testicular damage in mice. Food Chem Toxicol 2005; 43:1723-30. [PMID: 16000234 DOI: 10.1016/j.fct.2005.05.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2005] [Revised: 05/05/2005] [Accepted: 05/17/2005] [Indexed: 10/25/2022]
Abstract
The deleterious effect of acute cadmium-intoxication in mice testes was evaluated. Animals received a single dose of CdCl2 (2.5 or 5 mg/kg, intraperitoneally) and a number of toxicological parameters in mice testes were examined, such as delta-aminolevulinic acid dehydratase (delta-ALA-D) activity, lipid peroxidation, hemoglobin and ascorbic acid contents. Furthermore, the parameters that indicate tissue damage such as plasma alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) were also determined. Thus, a possible protective effect of 2,3-dimercapto-1-propane-sulfonic acid (DMPS) and diphenyl diselenide (PhSe)2 were studied. The results demonstrated an inhibition of delta-ALA-D activity, a reduction of ascorbic acid and an increase of lipid peroxidation induced by cadmium, indicating testes damage. Furthermore, we observed an increase of plasma LDH, AST and ALT activities. DMPS (400 mol/kg) and (PhSe)2 (100 micromol/kg) partially protected from the inhibitory effect of 2.5 mg/kg CdCl2 on delta-ALA-D and from the increase of TBARS (thiobarbituric acid reactive species) levels. (PhSe)2 therapy was effective in ameliorate ascorbic acid content when the cadmium dose was 2.5 mg/kg. Treatment with DMPS and (PhSe)2, individually or combined, was inefficient in reducing cadmium-induced plasma LDH and ALT activity increase. The use of combined therapy (DMPS plus (PhSe)2) proved to be efficient in decreasing cadmium levels in testes and in ameliorating plasma AST activity from animals that received the highest dose of cadmium.
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Affiliation(s)
- Francielli W Santos
- Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria CEP 97105-900, RS, Brazil
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Borges VC, Rocha JBT, Nogueira CW. Effect of diphenyl diselenide, diphenyl ditelluride and ebselen on cerebral Na+, K+-ATPase activity in rats. Toxicology 2005; 215:191-7. [PMID: 16095793 DOI: 10.1016/j.tox.2005.07.002] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Revised: 07/04/2005] [Accepted: 07/06/2005] [Indexed: 10/25/2022]
Abstract
In the present study, we investigated the in vitro effect of diphenyl ditelluride, diphenyl diselenide and ebselen on Na(+), K(+)-ATPase activity of rat brain. The results demonstrated that all compounds significantly inhibited (in the muM range) Na(+), K(+)-ATPase activity. Diphenyl ditelluride, at low concentrations, provoked an increase in Na(+), K(+)-ATPase activity. Dithiothreitol (DTT), at 3mM, protected the inhibition caused by diphenyl ditelluride, diphenyl diselenide and ebselen in Na(+), K(+)-ATPase activity. Post-incubation of diphenyl diselenide-treated homogenate with DTT completely recovered enzyme activity. DTT was able to recover the enzyme inhibition induced by 20muM of diphenyl ditelluride, but was partially able to recover inhibition induced by high concentrations of organotellurium compound. Conversely, DTT did not recover ebselen-induced Na(+), K(+)-ATPase inhibition. The mechanism of inhibition by diphenyl diselenide, diphenyl ditelluride and ebselen in Na(+), K(+)-ATPase activity revealed: decreased maximal velocity and K(m). Cerebral Na(+), K(+)-ATPase is a potential molecular target for the toxic effect of organochalcogens and the inhibition may occur through a change in the crucial thiol groups of this enzyme.
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Affiliation(s)
- V C Borges
- Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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Santos FW, Oro T, Zeni G, Rocha JBT, do Nascimento PC, Nogueira CW. Cadmium induced testicular damage and its response to administration of succimer and diphenyl diselenide in mice. Toxicol Lett 2004; 152:255-63. [PMID: 15331134 DOI: 10.1016/j.toxlet.2004.05.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2004] [Revised: 05/25/2004] [Accepted: 05/26/2004] [Indexed: 11/24/2022]
Abstract
Acute effects of cadmium in mice testes were evaluated. Animals received a single dose of CdCl2 (2.5 mg/kg or 5 mg/kg, intraperitoneally) and a number of toxicological parameters in mice testes were examined such as delta-aminolevulinic acid dehydratase (delta-ALA-D) activity, lipid peroxidation, hemoglobin content and components of the antioxidant defenses (superoxide dismutase (SOD) activity and ascorbic acid concentration). Furthermore, a possible protective effect of meso-2,3-dimercaptosuccinic acid (DMSA) and diphenyl diselenide (PhSe)2 are studied. The results demonstrated inhibition of delta-ALA-D and SOD activities, reduction in ascorbic acid, increase of lipid peroxidation induced by cadmium, indicating testes damage. DMSA (400 micromol/Kg) and (PhSe)2 (100 micromol/Kg) protected inhibitory effect of 2.5 mg/kg CdCl2 on delta-ALA-D and restored the increase of TBARS levels. Otherwise, (PhSe)2 treatment was effective in reducing the increase of TBARS levels induced by 5 mg/kg CdCl2, whereas DMSA and (PhSe)2, in combination, were ineffective in reducing TBARS level. However, these compounds alone or in combination, were unable to protect SOD activity and to improve ascorbic acid levels near to the normal value. The use of combined therapy (DMSA plus (PhSe)2) not proved be better than the monotherapy, in improving toxicological parameters evaluated in this model of testicular damage induced by cadmium.
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Affiliation(s)
- Francielli W Santos
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
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