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Cestaro BI, Nagata N, da Silva BJG. Evaluation of polypropylene microporous membranes as extraction devices for determination of carcinogenic aromatic amines in smoker urine by GC-MS/MS. J Chromatogr A 2024; 1729:465030. [PMID: 38838449 DOI: 10.1016/j.chroma.2024.465030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 05/14/2024] [Accepted: 05/25/2024] [Indexed: 06/07/2024]
Abstract
Exposure to tobacco smoke is highly correlated to the incidence of different types of cancer due to various carcinogenic compounds present in such smoke. Aromatic amines, such as 1-naphthylamine (1-NA) and 2-naphthylamine (2-NA), are produced in tobacco burning and are linked to bladder cancer. Miniaturized solid phase extraction techniques, such as microporous membrane solid phase extraction (MMSPE), have shown potential for the extraction of aromatic compounds. In this study, a bioanalytical method for the determination of 1-NA and 2-NA in human urine was developed using polypropylene microporous membranes as a sorptive phase for MMSPE. Urine samples were hydrolyzed with HCl for 1 h at 80 °C, after which pH was adjusted to 10. Ultrasound-assisted MMSPE procedure was optimized by factorial design as follows. To each sample, 750 µL of methanol was added, and ultrasound-assisted MMSPE was conducted for 1 h with four devices containing seven 2 mm polypropylene membrane segments. After extraction, the segments were transferred to 400 µL of hexane, and desorption was conducted for 30 min. Extracts were submitted to a simple and fast microwave-assisted derivatization procedure, by the addition of 10 µL of PFPA and heating at 480 W for 3 min, followed by clean-up with phosphate buffer pH 8.0 and GC-MS/MS analysis. Adequate linearity was obtained for both analytes in a range from 25 to 500 µg L-1, while the multiple reaction monitoring approach provided satisfactory selectivity and specificity. Intra-day (n = 6) and inter-day (n = 5) precision and accuracy were satisfactory, below 15 % and between 85 and 115 %, respectively. Recovery rates found were 91.9 and 58.4 % for 1-NA and 2-NA, respectively, with adequate precision. 1-NA was found in first-hand smokers' urine samples in a concentration range from 20.98 to 89.09 µg in 24 h, while it could be detected in second-hand smoker's urine samples, and 2-NA detected in all first and second-hand smokers' urine samples. The proposed method expands the applicability of low cost MMSPE devices to aromatic amines and biological fluids.
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Affiliation(s)
- Beatriz Isabella Cestaro
- Chemistry Department, Universidade Federal do Paraná, Av. Cel. Francisco H. Dos Santos, 100, Jardim das Américas, Curitiba, PR 81531-980, Brazil.
| | - Noemi Nagata
- Chemistry Department, Universidade Federal do Paraná, Av. Cel. Francisco H. Dos Santos, 100, Jardim das Américas, Curitiba, PR 81531-980, Brazil
| | - Bruno José Gonçalves da Silva
- Chemistry Department, Universidade Federal do Paraná, Av. Cel. Francisco H. Dos Santos, 100, Jardim das Américas, Curitiba, PR 81531-980, Brazil
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Lorenzo-Parodi N, Moebus S, Schmidt TC. Analysis of aromatic amines in human urine using comprehensive multi-dimensional gas chromatography-mass spectrometry (GCxGC-MS). Int J Hyg Environ Health 2024; 257:114343. [PMID: 38422601 DOI: 10.1016/j.ijheh.2024.114343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
Several aromatic amines (AA) are classified as human carcinogens, and tobacco smoke is one of the main sources of exposure. Once in the human body, they undergo different metabolic pathways which lead to either their excretion or ultimately to the formation of DNA and protein adducts. The aim of this study was to investigate AA in 68 urine samples (aged 29-79, 47% female), including 10 smokers (S), 28 past-smokers (PS) and 30 never-smokers (NS), and to study if there was a relation between the smoking status and the amount of the AA present. GCxGC-MS was used to analyze AA in complex urine samples due to its high peak capacity and the fact that it provides two sets of retention times and structural information, which facilitates the separation and identification of the target analytes. First, a qualitative comparison of an example set of a NS, PS and S sample was carried out, in which 38, 45 and 46 AA, respectively, could be tentatively identified. Afterwards, seven AA were successfully quantified in the samples. Of these, 4-ethylaniline (4EA, p = 0.015), 2,4,6-trimethylaniline (2,4,6TMA, p = 0.030), 2-naphthylamine (2NA, p = 0.014) and the sum of 2,4- and 2,6-dimethylaniline (DMA, p = 0.017) were found in significantly different (α = 0.05) concentrations for the S, 29 ± 14, 87 ± 49, 41 ± 26, and 105 ± 57 ng/L respectively, compared to the NS, 15 ± 6, 42 ± 30, 16 ± 6, and 48 ± 28 ng/L. And 2,4,6TMA (39 ± 26, p = 0.022), 2NA (18 ± 9, p = 0.025) and DMA (53 ± 46, p = 0.030), were also found at significantly higher concentrations in samples from S when compared to PS. However, some samples had AA concentrations outside the calibration curve and could not be taken into account, especially for 2-methylaniline (2MA). Therefore, all the samples were evaluated using a quantitative screening approach, by which the intensities of 4EA (p = 0.019), 2,4,6TMA (p = 0.048), 2NA (p = 0.016), DMA (p = 0.019) and 2MA (p = 0.006) in S were found to be significantly (α = 0.05) higher than in the NS, and 2MA (p = 0.019) and 4EA (p = 0.023) in S were found to be significantly higher than in the PS. An association between the smoking status and the amount of certain AA present could therefore be found. This information could be used to study the relation between the smoking status, the amount of AA present, and smoking related diseases like bladder cancer.
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Affiliation(s)
- Nerea Lorenzo-Parodi
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Susanne Moebus
- Institute for Urban Public Health, University Hospital Essen, University of Duisburg-Essen, Zweigerstrasse 37, 45130, Essen, Germany; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Torsten C Schmidt
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany; IWW Water Centre, Moritzstrasse 26, 45476, Mülheim an der Ruhr, Germany.
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Lorenzo-Parodi N, Leitner E, Schmidt TC. Comparison of gas chromatographic techniques for the analysis of iodinated derivatives of aromatic amines. Anal Bioanal Chem 2023:10.1007/s00216-023-04713-8. [PMID: 37208487 DOI: 10.1007/s00216-023-04713-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/21/2023]
Abstract
Some aromatic amines (AA) have been classified as carcinogens to humans. After entering the body, mainly through tobacco smoke, they can be detected in urine. Thus, their trace analysis as biomarkers in biofluids is of high relevance and can be achieved with gas chromatography (GC-MS), usually after derivatization. This study compares three gas chromatographic methods for the analysis of ten iodinated derivatives of AA: GC-MS in single-ion monitoring (SIM) mode with (1) electron ionization (GC-EI-MS) and (2) negative chemical ionization (GC-NCI-MS), and (3) GC-EI-MS/MS in multiple reaction monitoring (MRM) mode using electron ionization. All methods and most analytes showed good coefficients of determination (R2 > 0.99) for broad linear ranges covering three to five orders of magnitude in the picogram-per-liter to nanogram-per-liter range, with one and two exceptions for (1) and (2) respectively. Excellent limits of detection (LODs) of 9-50, 3.0-7.3, and 0.9-3.9 pg/L were observed for (1), (2), and (3) respectively, and good precision was achieved (intra-day repeatability < 15% and inter-day repeatability < 20% for most techniques and concentration levels). On average, recoveries between 80 and 104% were observed for all techniques. Urine samples of smokers and non-smokers were successfully analyzed, and p-toluidine and 2-chloroaniline could be found at significantly (α = 0.05) higher concentrations among smokers.
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Affiliation(s)
- Nerea Lorenzo-Parodi
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Erich Leitner
- Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9/II 8010, Graz, Austria
| | - Torsten C Schmidt
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany.
- Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany.
- IWW Water Centre, Moritzstrasse 26, 45476, Mülheim an Der Ruhr, Germany.
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Seyler T, Mazumder S, Ahamed R, Zhu W, Blount BC, Apelberg BJ, Wang L. Tobacco Smoke Is a Major Source of Aromatic Amine Exposure in U.S. Adults: 2013-2014 National Health and Nutrition Examination Survey (NHANES). Cancer Epidemiol Biomarkers Prev 2023; 32:OF1-OF9. [PMID: 37195136 PMCID: PMC10654254 DOI: 10.1158/1055-9965.epi-23-0071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/05/2023] [Accepted: 04/20/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Cigarette smoking increases the risk of cancer, cardiovascular diseases, and premature death. Aromatic amines (AA) are found in cigarette smoke and are well-established human bladder carcinogens. METHODS We measured and compared total urinary levels of 1-aminonaphthalene (1AMN), 2-aminonaphthalene (2AMN), and 4-aminobiphenyl (4ABP) in adults who smoked cigarettes exclusively and in adult nonusers of tobacco products from a nationally representative sample of non-institutionalized U.S. population in the 2013-2014 National Health and Nutrition Examination Survey. RESULTS Sample-weighted geometric mean concentrations of AAs in adults who smoked cigarettes exclusively compared with adult nonusers were 30 times higher for 1AMN and 4 to 6 times higher for 2AMN and 4ABP. We evaluated the association of tobacco-smoke exposure with urinary AAs using sample-weighted multiple linear regression models to control for age, sex, race/ethnicity, diet, and urinary creatinine. Secondhand smoke exposure status was categorized using serum cotinine (SCOT) among adult nonusers (SCOT ≤ 10 ng/mL). The exposure for adults who smoked cigarettes exclusively (SCOT > 10 ng/mL) was categorized on the basis of the average number of self-reported cigarettes smoked per day (CPD) in the five days prior to urine collection. The regression models show AAs concentration increased with increasing CPD (P < 0.001). Dietary-intake variables derived from the 24-hours recall questionnaire were not consistently significant predictors of urinary AAs. CONCLUSIONS This is the first characterized total urinary AA concentrations of the U.S. adult non-institutionalized population. Our analyses show that smoking status is a major contributor to AA exposures. IMPACT These data provide a crucial baseline for exposure to three AAs in U.S. non-institutionalized adults.
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Affiliation(s)
- Tiffany Seyler
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Shrila Mazumder
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Rayaj Ahamed
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Wanzhe Zhu
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Benjamin C Blount
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Benjamin J Apelberg
- Center of Tobacco Products, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Lanqing Wang
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia
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Urinary bio-monitoring of aromatic amine derivatives by new needle trap device packed with the multi-component adsorbent. Sci Rep 2023; 13:4243. [PMID: 36918633 PMCID: PMC10014860 DOI: 10.1038/s41598-023-31108-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
Aromatic amines are a large group of chemical compounds that have attracted the attention of researchers due to their toxicity and carcinogenicity. This study aimed to develop an efficient method for sampling and analysis of aromatic amines (Aniline, N, N-dimethylaniline, 2-chloroaniline, and 3-chloroaniline) from the vapour phase (headspace) of urine samples. For the implementation of this plan, a needle trap device packed with the three-component adsorbent consisting of nano-Hydroxy Apatite (nHA), Zeolite (Ze), and Metal-Organic Framework (MOF) equipped with GC-FID was employed for the first phase. Examination of the prepared adsorbents was performed by FT-IR, PXRD, and FE-SEM techniques. The optimal value of considerable parameters such as time and temperature of extraction, salt content, and pH were established using the Response Surface Methodology-Central Composite Design (RMS-CCD) method. In this way, the optimal extraction of targeted analytes was accomplished in 41 min at 41 °C with NaCl content of 33.0% (w/v) and pH: 13.0, respectively. Also, the repeatability and reproducibility of the method were calculated to be in the range of 2.2-7.1% and 3.9-8.1%, respectively, which indicates the acceptable precision of the method. Also, the limit of detection (LOD) and limit of quantification (LOQ) were determined in the range of 0.3-32.0 ng.L-1 and 0.8-350.0 ng.L-1, respectively, which proves the high sensitivity of the proposed method. Furthermore, the recovery percent of the extracted analytes was concluded in the range of 97.0-99.0% after 6 and 30 days of the sampling and storage at 25 °C and 4 °C, respectively. Finally, the designed procedure was employed in the analysis of the above-mentioned aromatic amines in the real urine samples. The achieved results illustrate that the three-component absorbent system (nHA;Ze;MOF@NTD) can be introduced as an efficient, fast-response, sensitive, and versatile procedure for trace analysis of the different aromatic amine compounds in public and occupational health.
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Mazumder S, Ahamed RA, Seyler TH, Wang L. Short- and Long-Term Stability of Aromatic Amines in Human Urine. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20054135. [PMID: 36901145 PMCID: PMC10002391 DOI: 10.3390/ijerph20054135] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 05/30/2023]
Abstract
Several aromatic amines (AAs) are established by the International Agency for Research on Cancer as carcinogenic (group 1) or probable/possible carcinogens to humans (group 2A/2B). AAs can be found in mainstream and sidestream smoke from combustible tobacco products, as well as in certain environmental pollution and occupational exposure from several chemical industry sectors. Exposure to AAs can be estimated by measuring their concentrations in urine; however, information about the short-term and long-term stabilities of AAs in urine need to be characterized before conducting large-scale population studies on AA exposure and the potentially harmful effects of AA exposure. In this report, the storage stability of o-toluidine, 2,6-dimethylaniline, o-anisidine, 1-aminonaphthalene, 2-aminonaphthalene, and 4-aminobiphenyl fortified in pooled, filtered, non-smokers' urine is analyzed by isotope dilution gas chromatography-triple quadrupole mass spectrometry (ID GC-MS/MS). The six AAs were measured in urine samples stored at ~20 °C (collection temperature), 4 °C and 10 °C (short-term transit temperatures), and -20 °C and -70 °C (long-term storage temperatures) over a 10-day period. All six analytes were stable for 10 days at transit and long-term storage temperatures but showed reduced recovery at 20 °C. The instability of the target AAs at 20 °C suggests that immediate storage of freshly voided urine at low temperatures is needed to attenuate degradation. A subset of the urine samples was analyzed following a longer storage duration at -70 °C: all AAs were stable for up to 14 months at this temperature. The stability of the six AAs in urine samples can be maintained at the various temperature levels and storage times expected in a typical study set.
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7
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Tkalec Ž, Codling G, Tratnik JS, Mazej D, Klánová J, Horvat M, Kosjek T. Suspect and non-targeted screening-based human biomonitoring identified 74 biomarkers of exposure in urine of Slovenian children. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120091. [PMID: 36064054 DOI: 10.1016/j.envpol.2022.120091] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/06/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Human exposure to organic contaminants is widespread. Many of these contaminants show adverse health effects on human population. Human biomonitoring (HBM) follows the levels and the distribution of biomarkers of exposure (BoE), but it is usually done in a targeted manner. Suspect and non-targeted screening (SS/NTS) tend to find BoE in an agnostic way, without preselection of compounds, and include finding evidence of exposure to predicted, unpredicted known and unknown chemicals. This study describes the application of high-resolution mass spectrometry (HRMS)-based SS/NTS workflow for revealing organic contaminants in urine of a cohort of 200 children from Slovenia, aged 6-9 years. The children originated from two regions, urban and rural, and the latter were sampled in two time periods, summer and winter. We tentatively identified 74 BoE at the confidence levels of 2 and 3. These BoE belong to several classes of pharmaceuticals, personal care products, plasticizers and plastic related products, volatile organic compounds, nicotine, caffeine and pesticides. The risk of three pesticides, atrazine, amitraz and diazinon is of particular concern since their use was limited in the EU. Among BoE we tentatively identified compounds that have not yet been monitored in HBM schemes and demonstrate limited exposure data, such as bisphenol G, polyethylene glycols and their ethers. Furthermore, 7 compounds with unknown use and sources of exposure were tentatively identified, either indicating the entry of new chemicals into the market, or their metabolites and transformation products. Interestingly, several BoE showed location and time dependency. Globally, this study presents high-throughput approach to SS/NTS for HBM. The results shed a light on the exposure of Slovenian children and raise questions on potential adverse health effects of such mixtures on this vulnerable population.
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Affiliation(s)
- Žiga Tkalec
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Garry Codling
- Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic
| | - Janja Snoj Tratnik
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Darja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Jana Klánová
- Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Tina Kosjek
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia.
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8
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Liu Y, Dang X, Ding H, Chen H. Specific Recognition and Solid Phase Extraction of Three Primary Aromatic Amines Based on Molecularly Imprinted Polymer Monolith for the Migration Detection in Food Contact Materials. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Shi T, Cheng Z, Liu T, Zhang Y. Application of up-conversion molecularly imprinted nanoprobe for selective recognition and straightforward detection of 4-aminobiphenyl. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 265:120405. [PMID: 34547681 DOI: 10.1016/j.saa.2021.120405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
A new method was developed for selectively and rapidly detecting carcinogen 4-aminobiphenyl, with lower limit of detection and wider linear range. Up-conversion nanoparticles β-NaGdF4:Yb3+, Er3+ was the first time to choose as light-emitting signal component. Molecularly imprinted polymers (MIPs) with specific recognition ability were successfully coated on the surface of β-NaGdF4:Yb3+, Er3+ to obtain a nano fluorescent probe for detecting 4-aminobiphenyl. The effect of addition amount of β-NaGdF4:Yb3+, Er3+ on the detection ability of β-NaGdF4:Yb3+, Er3+@MIPs was studied, and composite fluorescence nanoprobe with the best performance was obtained. β-NaGdF4:Yb3+, Er3+@MIPs were characterized by transmission electron microscopy, X-ray powder diffractometer, Fourier transform infrared spectroscopy and thermogravimetric analysis. The fluorescence intensity of β-NaGdF4:Yb3+, Er3+@MIPs decreased significantly compared with molecularly non-imprinted polymers β-NaGdF4:Yb3+, Er3+@NIPs (the maximum emission peak is at 541 nm) in the presence of 4-aminobiphenyl. Adsorption isotherm and adsorption kinetics between UCNP@MIPs and 4-ABP have been investigated and a satisfactory imprinting factor is 2.5. The detection mechanism is proved to be based on Langmuir adsorption and internal filtration effect. Under optimal experimental conditions, the limit of detection and quantification are 0.16 μM and 0.53 μM, respectively. The linear range of response is 1-50 μM, and RSD is less than 6.7%. This method was applied to determining river water samples in order to evaluate the practicability, and the good recovery rate is between 98.89% and 109.7%. These evidences demonstrate that β-NaGdF4:Yb3+, Er3+@MIPs is successfully used for the detection of 4-aminobiphenyl.
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Affiliation(s)
- Tian Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhiyuan Cheng
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Tong Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yueli Zhang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China.
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Chen RN, Kang SH, Li J, Lu LN, Luo XP, Wu L. Comparison and recent progress of molecular imprinting technology and dummy template molecular imprinting technology. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4538-4556. [PMID: 34570126 DOI: 10.1039/d1ay01014j] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Molecular imprinting technology for the preparation of polymers with specific molecular recognition function had become one of the current research hotspots. It has been widely applied in chromatographic separation, antibody and receptor mimetics, solid-phase extraction, bio-sensors, and other fields in the last decades. In this study, molecular imprinting technology was summarized from the points of templates and dummy templates, and four typical target analytes were selected to compare the differences between templates and dummy templates. The current status and prospects of molecular imprinting technology were also proposed.
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Affiliation(s)
| | | | - Jia Li
- Northwest Minzu University, China.
| | - Li-Na Lu
- Northwest Minzu University, China.
| | | | - Lan Wu
- Northwest Minzu University, China.
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11
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Vorkamp K, Castaño A, Antignac JP, Boada LD, Cequier E, Covaci A, Esteban López M, Haug LS, Kasper-Sonnenberg M, Koch HM, Pérez Luzardo O, Osīte A, Rambaud L, Pinorini MT, Sabbioni G, Thomsen C. Biomarkers, matrices and analytical methods targeting human exposure to chemicals selected for a European human biomonitoring initiative. ENVIRONMENT INTERNATIONAL 2021; 146:106082. [PMID: 33227583 DOI: 10.1016/j.envint.2020.106082] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/11/2020] [Accepted: 08/19/2020] [Indexed: 05/27/2023]
Abstract
The major purpose of human biomonitoring is the mapping and assessment of human exposure to chemicals. The European initiative HBM4EU has prioritized seven substance groups and two metals relevant for human exposure: Phthalates and substitutes (1,2-cyclohexane dicarboxylic acid diisononyl ester, DINCH), bisphenols, per- and polyfluoroalkyl substances (PFASs), halogenated and organophosphorous flame retardants (HFRs and OPFRs), polycyclic aromatic hydrocarbons (PAHs), arylamines, cadmium and chromium. As a first step towards comparable European-wide data, the most suitable biomarkers, human matrices and analytical methods for each substance group or metal were selected from the scientific literature, based on a set of selection criteria. The biomarkers included parent compounds of PFASs and HFRs in serum, of bisphenols and arylamines in urine, metabolites of phthalates, DINCH, OPFRs and PAHs in urine as well as metals in blood and urine, with a preference to measure Cr in erythrocytes representing Cr (VI) exposure. High performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) was the method of choice for bisphenols, PFASs, the HFR hexabromocyclododecane (HBCDD), phenolic HFRs as well as the metabolites of phthalates, DINCH, OPFRs and PAHs in urine. Gas chromatographic (GC) methods were selected for the remaining compounds, e.g. GC-low resolution MS with electron capture negative ionization (ECNI) for HFRs. Both GC-MS and LC-MS/MS were suitable for arylamines. New developments towards increased applications of GC-MS/MS may offer alternatives to GC-MS or LC-MS/MS approaches, e.g. for bisphenols. The metals were best determined by inductively coupled plasma (ICP)-MS, with the particular challenge of avoiding interferences in the Cd determination in urine. The evaluation process revealed research needs towards higher sensitivity and non-invasive sampling as well as a need for more stringent quality assurance/quality control applications and assessments.
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Affiliation(s)
- Katrin Vorkamp
- Aarhus University, Department of Environmental Science, Denmark.
| | - Argelia Castaño
- Instituto de Salud Carlos III, National Centre for Environmental Health, Spain.
| | | | - Luis D Boada
- University of Las Palmas de Gran Canaria, Institute for Biomedical and Health Research, Spain.
| | | | - Adrian Covaci
- University of Antwerp, Toxicological Centre, Belgium.
| | - Marta Esteban López
- Instituto de Salud Carlos III, National Centre for Environmental Health, Spain.
| | - Line S Haug
- Norwegian Institute of Public Health, Norway.
| | - Monika Kasper-Sonnenberg
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance - Institute of the Ruhr-University, Germany.
| | - Holger M Koch
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance - Institute of the Ruhr-University, Germany.
| | - Octavio Pérez Luzardo
- University of Las Palmas de Gran Canaria, Institute for Biomedical and Health Research, Spain.
| | - Agnese Osīte
- University of Latvia, Department of Analytical Chemistry, Latvia.
| | - Loïc Rambaud
- Santé Publique France, Department of Environmental and Occupational Health, France.
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12
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Abstract
Introduction: Urothelial carcinoma (UCC) develops in both humans and dogs and tracks to regions of high industrial activity. We hypothesize that dogs with UCC may act as sentinels for human urothelial carcinogen exposures. The aim of this pilot study was to determine whether healthy people and dogs in the same households share urinary exposures to potentially mutagenic chemical carcinogens. Methods: We measured urinary concentrations of acrolein (as its metabolite 3-HPMA), arsenic species, 4-aminobiphenyl, and 4-chlorophenol (a metabolite of the phenoxyherbicide 2,4-D) in healthy dogs and their owners. We assessed possible chemical sources through questionnaires and screened for urothelial DNA damage using the micronucleus assay. Results: Biomarkers of urinary exposure to acrolein, arsenic, and 4-chlorophenol were found in the urine of 42 pet dogs and 42 owners, with 4-aminobiphenyl detected sporadically. Creatinine-adjusted urinary chemical concentrations were significantly higher, by 2.8- to 6.2-fold, in dogs compared to humans. Correlations were found for 3-HPMA (r = 0.32, P = 0.04) and monomethylarsonic acid (r = 0.37, P = 0.02) between people and their dogs. Voided urothelial cell yields were inadequate to quantify DNA damage, and questionnaires did not reveal significant associations with urinary chemical concentrations. Conclusions: Healthy humans and pet dogs have shared urinary exposures to known mutagenic chemicals, with significantly higher levels in dogs. Higher urinary exposures to acrolein and arsenic in dogs correlate to higher exposures in their owners. Follow-up studies will assess the mutagenic potential of these levels in vitro and measure these biomarkers in owners of dogs with UCC.
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13
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Mollabahrami F, Bahrami A, Afkhami A, Shahna FG, Soleimani E. Developing a Method for Determination of Urinary Delta-Amino-Levulinic Acid using Molecularly Imprinted Polymers. CHEMISTRY & CHEMICAL TECHNOLOGY 2020. [DOI: 10.23939/chcht14.03.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Habibagahi A, Alderman N, Kubwabo C. A review of the analysis of biomarkers of exposure to tobacco and vaping products. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4276-4302. [PMID: 32853303 DOI: 10.1039/d0ay01467b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quantification of exposure to different chemicals from both combustible cigarettes and vaping products is important in providing information on the potential health risks of these products. To assess the exposure to tobacco products, biomarkers of exposure (BOEs) are measured in a variety of biological matrices. In this review paper, current knowledge on analytical methods applied to the analysis of biomarkers of exposure to tobacco products is discussed. Numerous sample preparation techniques are available for the extraction and sample clean up for the analysis of BOEs to tobacco and nicotine delivery products. Many tobacco products-related exposure biomarkers have been analyzed using different instrumental techniques, the most common techniques being gas and liquid chromatography coupled with mass spectrometry (GC-MS, GC-MS/MS and LC-MS/MS). To assess exposure to emerging tobacco products and study exposure in dual tobacco users, the list of biomarkers analyzed in urine samples has been expanded. Therefore, the current state of the literature can be used in preparing a preferred list of biomarkers based on the aim of each study. The information summarized in this review is expected to be a handy tool for researchers involved in studying exposures to tobacco products, as well as in risk assessment of biomarkers of exposure to vaping products.
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Affiliation(s)
- Arezoo Habibagahi
- Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, ON K1A 0K9, Canada.
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15
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Sadriu I, Bouden S, Nicolle J, Podvorica FI, Bertagna V, Berho C, Amalric L, Vautrin-Ul C. Molecularly imprinted polymer modified glassy carbon electrodes for the electrochemical analysis of isoproturon in water. Talanta 2020; 207:120222. [DOI: 10.1016/j.talanta.2019.120222] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 08/01/2019] [Accepted: 08/02/2019] [Indexed: 01/06/2023]
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16
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Yu J, Wang B, Cai J, Yan Q, Wang S, Zhao G, Zhao J, Pan L, Liu S. Selective extraction and determination of aromatic amine metabolites in urine samples by using magnetic covalent framework nanocomposites and HPLC-MS/MS. RSC Adv 2020; 10:28437-28446. [PMID: 35519091 PMCID: PMC9055637 DOI: 10.1039/d0ra04096g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/17/2020] [Indexed: 11/21/2022] Open
Abstract
Purification and selective enrichment of ultra-low level metabolites in bio-samples is very important for HPLC-MS/MS analysis. A magnetic covalent organic framework (i.e. COFs) (TpPa-1) (i.e. 2,4,6-trihydroxybenzene-1,3,5-tricarbaldehyde-p-phenylenediamine) material was synthesized and used for a magnetic solid phase extraction (MSPE) method in aromatic amine (AA) metabolites (i.e. 1-naphthylamine, 2-naphthylamine, 3-aminobiphenyl and 4-aminobiphenyl) in urine, and then HPLC-MS/MS was employed for analysis. The morphology, pore structure, surface area, chemical composition, magnetic properties, and thermal stability of the synthesized magnetic COFs were characterized with several analysis techniques, such as nitrogen adsorption–desorption isotherms, HRTEM, FTIR, XRD, and so on. MSPE conditions were optimized and analytical performance of the developed method was characterized. The limit of detection (LOD) and limit of quantification (LOQ) of four AAs ranged from 0.01 to 0.07 ng mL−1 and 0.04 to 0.22 ng mL−1, respectively. The recoveries of 1-NA, 2-NA, 3-ABP, 4-ABP were in the range of 81.9–105%, 87.8–102%, 101–120%, 88.3–117%, respectively. Good intra-day and inter-day precision were obtained with RSD of less than 5.8% and 9.9%, respectively. Furthermore, the synthesized magnetic COFs absorbent could be recycled in MSPE at least 5 times. Analytical results of AA metabolites in real urine samples with the developed method showed significant difference (p < 0.01) between smokers and nonsmokers. Thus, urinary AA metabolites could be exposure biomarkers for cigarette smoke. Purification and selective enrichment of ultra-low level metabolites in bio-samples is very important for HPLC-MS/MS analysis.![]()
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Affiliation(s)
- Jingjing Yu
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Bing Wang
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Junlan Cai
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Quanping Yan
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Sheng Wang
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Ge Zhao
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Junwei Zhao
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Lining Pan
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
| | - Shaofeng Liu
- Zhengzhou Tobacco Research Institute of CNTC
- Zhengzhou 450001
- China
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17
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Synthesis, spectral analysis, and thermodynamic parameters of gold(III) complex in the presence of 4-bromo-2,6-bis(hydroxymethyl)phenol and m-nitroaniline. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02498-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Yih Hui B, Mohamad Zain NN, Mohamad S, Mohamed Fauzi H, Alias Y, Chandrasekaram K, Rahim NY, Yahaya N, Raoov M. Determination of Aromatic Amines in Urine using Extraction and Chromatographic Analysis: A Minireview. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1636057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Boon Yih Hui
- Integrative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Nur Nadhirah Mohamad Zain
- Integrative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Sharifah Mohamad
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Ionic Liquids (UMCIL), Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Hafizuddin Mohamed Fauzi
- Regenerative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Yatimah Alias
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Ionic Liquids (UMCIL), Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Kumuthini Chandrasekaram
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Ionic Liquids (UMCIL), Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Nurul Yani Rahim
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Noorfatimah Yahaya
- Integrative Medicine Cluster, Advanced Medical & Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Muggundha Raoov
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Universiti Malaya Centre for Ionic Liquids (UMCIL), Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
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19
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Mazumder S, Ahamed RA, McGahee E, Wang L, Seyler TH. A New Automated Method for the Analysis of Aromatic Amines in Human Urine by GC-MS/MS. J Anal Toxicol 2019; 43:25-35. [PMID: 30010885 DOI: 10.1093/jat/bky045] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Indexed: 01/08/2023] Open
Abstract
Cigarette smoking significantly increases the risk of cancer and cardiovascular diseases as well as premature death. Aromatic amines (AAs) such as o-toluidine, 2-aminonaphthalene and 4-aminobiphenyl are found in cigarette smoke and are well-established human bladder carcinogens presumably acting via the formation of DNA adducts. These amines may be metabolized in the liver to acetylated or glucuronidated forms or oxidized to a hydroxylamine which may react with protein and DNA to form adducts. Free, acetylated and glucuronidated AAs are excreted in urine and can be measured as exposure biomarkers. Using isotope dilution GC-MS/MS, our laboratory quantifies six urinary AAs that are known or suspected carcinogens-o-toluidine, 2,6-dimethylaniline, o-anisidine, 1-aminonaphthalene, 2-aminonaphthalene and 4-aminobiphenyl-for large population studies such as the National Health and Nutrition Examination Survey (NHANES). We also monitor two additional corresponding structural isomers-2-aminobiphenyl and 3-aminobiphenyl-to verify isomer separation. A new and improved automated sample preparation method was developed to quantify these AAs, in which, sample cleanup was done via Supported Liquid Extraction (SLE+ ISOLUTE®) on a Hamilton STAR™ workstation. This automated method increased sample throughput by reducing sample cleanup time from 8 to 4 h while maintaining precision (intra and inter-run coefficient of variation <7%) and accuracy (±17%). Recent improvements in our GC/MS method have enhanced our assay sensitivity and specificity, resulting in longer analytical column life and maintaining or reducing the limit of detection for all six analytes. Indigo ASCENTTM software (3.7.1, Indigo BioAutomation, Inc.) is used for peak integration, calibration and quantification. A streamlined sample data flow was created in parallel with the automated method, in which samples can be tracked from receiving to final laboratory information management system output with minimal human intervention, minimizing potential human error. This newly validated, automated method and sample data flow are currently applied in biomonitoring of AAs in the US noninstitutionalized population NHANES 2013-2014 cycle.
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Affiliation(s)
- Shrila Mazumder
- Oak Ridge Institute for Science and Education (ORISE), 100 ORAU Way, Oak Ridge, TN, USA
| | - Rayaj A Ahamed
- Oak Ridge Institute for Science and Education (ORISE), 100 ORAU Way, Oak Ridge, TN, USA
| | - Ernest McGahee
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, USA
| | - Lanqing Wang
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, USA
| | - Tiffany H Seyler
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Highway, Atlanta, GA, USA
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20
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Niu J, Zhao X, Jin Y, Yang G, Li Z, Wang J, Zhao R, Li Z. Determination of aromatic amines in the urine of smokers using a porous organic framework (JUC-Z2)-coated solid-phase microextraction fiber. J Chromatogr A 2018; 1555:37-44. [DOI: 10.1016/j.chroma.2018.04.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/14/2018] [Accepted: 04/25/2018] [Indexed: 10/17/2022]
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21
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Abstract
Arylamines and nitroarenes are intermediates in the production of pharmaceuticals, dyes, pesticides, and plastics and are important environmental and occupational pollutants. N-Hydroxyarylamines are the toxic common intermediates of arylamines and nitroarenes. N-Hydroxyarylamines and their derivatives can form adducts with hemoglobin (Hb-adducts), albumin, DNA, and tissue proteins in a dose-dependent manner. Most of the arylamine Hb-adducts are labile and undergo hydrolysis in vitro, by mild acid or base, to form the arylamines. According to current knowledge of arylamine adduct-formation, the hydrolyzable fraction is derived from the reaction products of the arylnitroso derivatives that yield arylsulfinamide adducts with cysteine. Hb-adducts are markers for the bioavailability of N-hydroxyarylamines. Hb-adducts of arylamines and nitroarenes have been used for many biomonitoring studies for over 30 years. Hb-adducts reflect the exposure history of the last four months. Biomonitoring of urinary metabolites is a less invasive process than biomonitoring blood protein adducts, and urinary metabolites have served as short-lived biomarkers of exposure to these hazardous chemicals. However, in case of intermittent exposure, urinary metabolites may not be detected, and subjects may be misclassified as nonexposed. Arylamines and nitroarenes and/or their metabolites have been measured in urine, especially to monitor the exposure of workers. This review summarizes the results of human biomonitoring studies involving urinary metabolites and Hb-adducts of arylamines and nitroarenes. In addition, studies about the relationship between Hb-adducts and diseases are summarized.
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Affiliation(s)
- Gabriele Sabbioni
- Institute of Environmental and Occupational Toxicology , Casella Postale 108, CH-6780 Airolo, Switzerland.,Alpine Institute of Chemistry and Toxicology , CH-6718 Olivone, Switzerland.,Walther-Straub-Institut für Pharmakologie und Toxikologie, Ludwig-Maximilians-Universität , D-80336 München, Germany
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22
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Jalilian N, Ebrahimzadeh H, Asgharinezhad AA. Dispersive micro-solid phase extraction of aromatic amines based on an efficient sorbent made from poly(1,8-diaminonaphtalen) and magnetic multiwalled carbon nanotubes composite. J Chromatogr A 2017; 1499:38-47. [DOI: 10.1016/j.chroma.2017.03.087] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/24/2017] [Accepted: 03/31/2017] [Indexed: 11/27/2022]
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23
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Dugué PA, Hodge AM, Brinkman MT, Bassett JK, Shivappa N, Hebert JR, Hopper JL, English DR, Milne RL, Giles GG. Association between selected dietary scores and the risk of urothelial cell carcinoma: A prospective cohort study. Int J Cancer 2016; 139:1251-60. [PMID: 27149545 DOI: 10.1002/ijc.30175] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/02/2016] [Accepted: 04/25/2016] [Indexed: 01/28/2023]
Abstract
Studies investigating the association of food and nutrient consumption with the risk of urothelial cell carcinoma (UCC) have produced mixed results. We used three common dietary scores, the Mediterranean Diet Score (MDS), the Alternate Healthy Eating Index 2010 (AHEI-2010) and the Dietary Inflammatory Index (DII) to assess the evidence of an association between diet and the risk of UCC. Over a median follow-up time of 21.3 years, 379 incident UCC cases were diagnosed. Dietary scores were calculated using data from a 121-item food frequency questionnaire administered at baseline. We used Cox models to compute hazard ratios (HR) for the association between dietary scores (per one standard deviation) and UCC risk. In order to reflect overall adherence to a healthy diet, a metascore was constructed by summing the quintiles of each of the three scores. None of the dietary scores was associated with the risk of UCC overall. A healthier diet was found to be inversely associated with the risk of invasive (MDS: HR = 0.86, 95% CI: 0.74-1.00, metascore: HR = 0.84, 95% CI: 0.71-0.98), but not superficial disease (heterogeneity between subtypes p = 0.04 and p = 0.03, respectively). Results were consistent but weaker for the DII and the AHEI-2010. We found some evidence of effect modification by smoking, in particular for the metascore (Current: HR = 0.77, 95% CI: 0.58-1.01, Former: HR = 0.77, 95% CI: 0.64-0.92, Never: HR = 1.01, 95% CI: 0.81-1.26, p for heterogeneity = 0.05). A healthy diet may be protective against the risk of invasive, but not superficial, UCC. Promoting healthy dietary habits may help lower the risk of invasive UCC, especially for current and former smokers.
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Affiliation(s)
- Pierre-Antoine Dugué
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, VIC, Australia
| | - Allison M Hodge
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia
| | - Maree T Brinkman
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia
| | - Julie K Bassett
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia
| | - Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC.,Connecting Health Innovations LLC, Columbia, SC
| | - James R Hebert
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC.,Connecting Health Innovations LLC, Columbia, SC
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, VIC, Australia
| | - Dallas R English
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, VIC, Australia
| | - Roger L Milne
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, VIC, Australia
| | - Graham G Giles
- Cancer Council Victoria, Cancer Epidemiology Centre, Melbourne, VIC, Australia.,Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, VIC, Australia
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24
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Wu L, Liu F, Wang G, Guo Z, Zhao J. Bifunctional monomer molecularly imprinted polymers based on the surface of multiwalled carbon nanotubes for solid-phase extraction of tartrazine from drinks. RSC Adv 2016. [DOI: 10.1039/c5ra19565a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel bifunctional monomer MIP with an improved selectivity for tartrazine on the surface of MWNTs was synthesised.
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Affiliation(s)
- Lingmin Wu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education
- College of Chemistry & Material Science
- Northwest University
- Xi’an
- China
| | - Fei Liu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education
- College of Chemistry & Material Science
- Northwest University
- Xi’an
- China
| | - Gailing Wang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education
- College of Chemistry & Material Science
- Northwest University
- Xi’an
- China
| | - Zhian Guo
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education
- College of Chemistry & Material Science
- Northwest University
- Xi’an
- China
| | - Jingchan Zhao
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education
- College of Chemistry & Material Science
- Northwest University
- Xi’an
- China
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25
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Konorev D, Koopmeiners JS, Tang Y, Franck Thompson EA, Jensen JA, Hatsukami DK, Turesky RJ. Measurement of the Heterocyclic Amines 2-Amino-9H-pyrido[2,3-b]indole and 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine in Urine: Effects of Cigarette Smoking. Chem Res Toxicol 2015; 28:2390-9. [PMID: 26574651 PMCID: PMC4699441 DOI: 10.1021/acs.chemrestox.5b00401] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-Amino-9H-pyrido[2,3-b]indole (AαC) and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) are carcinogenic heterocyclic aromatic amines (HAAs) formed during the combustion of tobacco and during the high-temperature cooking of meats. Human enzymes biotransform AαC and PhIP into reactive metabolites, which can bind to DNA and lead to mutations. We sought to understand the relative contribution of smoking and diet to the exposure of AαC and PhIP, by determining levels of AαC, its ring-oxidized conjugate 2-amino-9H-pyrido[2,3-b]indole-3-yl sulfate (AαC-3-OSO3H), and PhIP in urine of smokers on a free-choice diet before and after a six week tobacco smoking cessation study. AαC and AαC-3-OSO3H were detected in more than 90% of the urine samples of all subjects during the smoking phase. The geometric mean levels of urinary AαC during the smoking and cessation phases were 24.3 pg/mg creatinine and 3.2 pg/mg creatinine, and the geometric mean levels of AαC-3-OSO3H were 47.3 pg/mg creatinine and 3.7 pg/mg creatinine. These decreases in the mean levels of AαC and AαC-3-OSO3H were, respectively, 87% and 92%, after the cessation of tobacco (P < 0.0007). However, PhIP was detected in <10% of the urine samples, and the exposure to PhIP was not correlated to smoking. Epidemiological studies have reported that smoking is a risk factor for cancer of the liver and gastrointestinal tract. It is noteworthy that AαC is a hepatocellular carcinogen and induces aberrant crypt foci, early biomarkers of colon cancer, in rodents. Our urinary biomarker data demonstrate that tobacco smoking is a significant source of AαC exposure. Further studies are warranted to examine the potential role of AαC as a risk factor for hepatocellular and gastrointestinal cancer in smokers.
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Affiliation(s)
- Dmitri Konorev
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Joseph S Koopmeiners
- Division of Biostatistics, School of Public Health, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Yijin Tang
- Division of Environmental Health Sciences, Wadsworth Center, New York State Department of Health , Albany, New York 12201, United States
| | | | - Joni A Jensen
- Tobacco Use Programs, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Dorothy K Hatsukami
- Tobacco Use Programs, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Robert J Turesky
- Department of Medicinal Chemistry and Masonic Cancer Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
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