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Wang X, Wang Y, Wang S, Hou J, Cai L, Fan G. Indirect Competitive ELISA for the Determination of Total Chromium Content in Food, Feed and Environmental Samples. Molecules 2022; 27:molecules27051585. [PMID: 35268684 PMCID: PMC8911876 DOI: 10.3390/molecules27051585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
Background: This study aimed to prepare monoclonal antibodies (mAbs) with high immunoreactivity, sensitivity, and specificity for the chelate (Cr(III)-EDTA) of trivalent chromium ion (Cr(III)) and ethylenediamine tetraacetic acid (EDTA). Further, the study established an indirect competitive enzyme-linked immunosorbent assay (icELISA) for detecting the total chromium content in food, feed, and environmental samples. Methods: Hapten Cr(III)-iEDTA was synthesized by chelating Cr(III) with isothiocyanatebenzyl-EDTA (iEDTA). Immunogen Cr(III)-iEDTA-BSA formed by chelating Cr(III)-iEDTA with bovine serum albumin (BSA), and coating antigen Cr(III)-iEDTA-OVA formed by chelating Cr(III)-iEDTA with ovalbumin (OVA) were prepared using the isothiocyanate method and identified by ultraviolet spectra (UV) and inductively coupled plasma optical emission spectrometry (ICP-OES). Balb/c mice were immunized with the Cr(III)-iEDTA-BSA, and the anti Cr(III)-EDTA mAb cell lines were screened by cell fusion. The Cr(III)-EDTA mAbs were prepared by induced ascites in vivo, and their immunological characteristics were assessed. Results: The immunogen Cr(III)-iEDTA-BSA was successfully synthesized, and the molecular binding ratio of Cr(III) to BSA was 15.48:1. Three hybridoma cell lines 2A3, 2A11, and 3D9 were screened, among which 2A3 was the best cell line. The 2A3 secreted antibody was stable after six passages, the affinity constant (Ka) was 2.69 × 109 L/mol, its 50% inhibition concentration (IC50) of Cr(III)-EDTA was 8.64 μg/L, and it had no cross-reactivity (CR%) with other heavy metal ion chelates except for a slight CR with Fe(III)-EDTA (1.12%). An icELISA detection method for Cr(III)-EDTA was established, with a limit of detection (LOD) of 1.0 μg/L and a working range of 1.13 to 66.30 μg/L. The average spiked recovery intra-assay rates were 90% to 109.5%, while the average recovery inter-assay rates were 90.4% to 97.2%. The intra-and inter-assay coefficient of variations (CVs) were 11.5% to 12.6% and 11.1% to 12.7%, respectively. The preliminary application of the icELISA and the comparison with ICP-OES showed that the coincidence rate of the two methods was 100%, and the correlation coefficient was 0.987. Conclusions: The study successfully established an icELISA method that meets the requirements for detecting the Cr(III)-EDTA chelate content in food, feed, and environmental samples, based on Cr(III)-EDTA mAb, and carried out its preliminary practical application.
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Affiliation(s)
- Xiaofei Wang
- Xinxiang Institute of Engineering, College of Bioengineering, Xinxiang 453700, China; (X.W.); (S.W.)
| | - Yanan Wang
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Shuyun Wang
- Xinxiang Institute of Engineering, College of Bioengineering, Xinxiang 453700, China; (X.W.); (S.W.)
| | - Jie Hou
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Linlin Cai
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
| | - Guoying Fan
- Henan Institute of Science and Technology, College of Animal Science and Veterinary Medicine, Xinxiang 453003, China; (Y.W.); (J.H.); (L.C.)
- Correspondence: ; Tel.: +86-158-3736-8615
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Faheem A, Rehman K, Jabeen K, Akash MSH. Nicotine-mediated upregulation of microRNA-141 expression determines adipokine-intervened insulin resistance. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 80:103506. [PMID: 33002592 DOI: 10.1016/j.etap.2020.103506] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 08/10/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
MicroRNAs (miRNAs) are non-coding RNAs that are associated with adipokine homeostasis and insulin resistance. Whereas, smoking can disturb metabolic homeostasis. Present study was aimed to investigate the level of miRNA-141 in experimental animal model that were exposed with graded doses of nicotine. We further aimed to investigate the possible interplay of miRNA-141 expression change with adipokine homeostasis and occurrence of insulin resistance in nicotine-exposed experimental animals. Nicotine (0.5, 1.0, 3.0 and 6.0 mg/Kg) was administered to early adolescent; postnatal days ranging from 25 to 30 Wistar rats for one month. Serum was analyzed for leptin, adipokines, IL-6, MDA, HbA1c, insulin, G6PDH, hexokinase, and lipid profile. While miRNA-141 expression level was determined in plasma. Higher doses of nicotine were associated with higher glucose, HbA1c, leptin, IL-6, MDA and lipids levels, while, insulin, adiponectin, G6PDH, hexokinase and HDL levels were lower. Higher doses of nicotine also impaired glucose tolerance and exhibited significant increase in miR-141 expression signifying that nicotine exposure may influence adipokines regulation altering glycemic profile. This is accompanied with aggravated inflammatory responses where genetic expression of miRNA-141 can be an accessible biomarker for metabolic disturbances with insulin resistance and glucose intolerance.
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Affiliation(s)
- Amna Faheem
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Kanwal Rehman
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan; Department of Pharmacy, University of Agriculture, Faisalabad, Pakistan.
| | - Komal Jabeen
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan; Department of Pharmacy, University of Agriculture, Faisalabad, Pakistan
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Lin LK, Uzunoglu A, Stanciu LA. Aminolated and Thiolated PEG-Covered Gold Nanoparticles with High Stability and Antiaggregation for Lateral Flow Detection of Bisphenol A. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1702828. [PMID: 29280330 DOI: 10.1002/smll.201702828] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/13/2017] [Indexed: 05/20/2023]
Abstract
The few lateral flow assays (LFAs) established for detecting the endocrine disrupting chemical bisphenol A (BPA) have employed citrate-stabilized gold nanoparticles (GNPs), which have inevitable limitations and instability issues. To address these limitations, a more stable and more sensitive biosensor is developed by designing strategies for modifying the surfaces of GNPs with polyethylene glycol and then testing their effectiveness and sensitivity toward BPA in an LFA. Without the application of any enhancement strategy, this modified BPA LFA can achieve a naked-eye limit of detection (LOD) of 0.8 ng mL-1 , which is 12.5 times better than the LOD of regular BPA LFAs, and a quantitative LOD of 0.472 ng mL-1 . This modified LFA has the potential to be applied to the detection of various antigens.
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Affiliation(s)
- Li-Kai Lin
- School of Materials Engineering, Neil Armstrong Hall of Engineering Purdue University, 701 West Stadium Avenue, West Lafayette, IN, 47907-2045, USA
| | - Aytekin Uzunoglu
- School of Materials Engineering, Neil Armstrong Hall of Engineering Purdue University, 701 West Stadium Avenue, West Lafayette, IN, 47907-2045, USA
| | - Lia A Stanciu
- School of Materials Engineering, Neil Armstrong Hall of Engineering Purdue University, 701 West Stadium Avenue, West Lafayette, IN, 47907-2045, USA
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Zhang D, Zhou L, Lei Y, Zhou Z, Zhou J, Chen S. Investigation of diethylstilbestrol residue level in human urine samples by a specific monoclonal antibody. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:7042-7050. [PMID: 28092005 DOI: 10.1007/s11356-017-8405-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
Diethylstilbestrol (DES) is used as a kind of animal feed additive and affects people's health through the food chain. The purpose of this study is to detect the residue level of DES in 576 human urine samples directly. DES-BSA was used to immunize Balb/c mice. The monoclonal antibody was produced by hybridoma that was screened through cell fusion techniques. Finally, we developed the indirect competitive ELISA method to analyze 576 human urine samples from Zhejiang Province, China. The IC50 of this method was 3.33 ng/mL. The LOD and LOQ were 0.16 and 0.54 ng/mL. Linear range of the standard curve was from LOD to 12.50 ng/mL. There was no cross-reactivity with two kinds of estrogens and two structural analogs with DES. Five hundred seventy-six urine samples were analyzed by the indirect competitive ELISA method, and the detection rate was 98.78%. The mean concentration and geometric mean were 4.70 and 3.50 ng/mL. The indirect competitive ELISA method based on monoclonal antibody was sensitive and reliable for the detection of DES in human urine samples. The results warned us to pay more attention to human health and food safety.
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Affiliation(s)
- Dai Zhang
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, Zhejiang, 310058, China
| | - Lifang Zhou
- Hangzhou EPIE Bio-detection Technology Limited, Hangzhou, 310051, China
| | - Yajing Lei
- Hangzhou EPIE Bio-detection Technology Limited, Hangzhou, 310051, China
| | - Zhan Zhou
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, Zhejiang, 310058, China
| | - Jie Zhou
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, Zhejiang, 310058, China.
| | - Shuqing Chen
- Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Zijingang Campus, Hangzhou, Zhejiang, 310058, China.
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Schumacher S, Seitz H. A novel immunoassay for quantitative drug abuse screening in serum. J Immunol Methods 2016; 436:34-40. [DOI: 10.1016/j.jim.2016.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/21/2016] [Accepted: 06/21/2016] [Indexed: 01/10/2023]
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Zhou L, Lei Y, Zhang D, Ahmed S, Chen S. An ultra-sensitive monoclonal antibody-based enzyme-linked immunosobent assay for dibutyl phthalate in human urinary. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 541:570-578. [PMID: 26433326 DOI: 10.1016/j.scitotenv.2015.09.110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/21/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
Dibutyl phthalate (DBP) has been extensively used as a plasticizer in many daily products, which is highly toxic to human, notably affecting the reproductive and developmental function. As the previous method is expensive, time-consuming, low sensitivity and just focused on the environment. Present study was aimed to establish an ultra-sensitive and simple method based on good quality monoclonal antibody, applying to evaluate excretion level of DBP in urine samples of Chinese population directly. A monoclonal antibody was generated and characterized after fusion of myeloma cells with spleen cells isolated from BALB/c mouse. The mouse was previously immunized using a specially designed amino derivative of DBP conjugated with bovine serum albumin (BSA) as immunogen. Cross-reactivity values of the monoclonal antibody against DBP, di-isobutyl phthalate (DIBP) were observed 100% and 1.25%, while for dimethyl phthalate (DMP), butyl benzyl phthalate (BBP) and didecyl phthalate (DDP) the values were <0.06%. The standard curve was constructed at 0-50 ng mL(-1) and good linearity (R(2)=0.994) was achieved. The observed IC50 (7.34 ng mL(-1)) and LOD (0.06 ng mL(-1)) values was improved 1000-fold to polyclonal antibody and 5-fold to other monoclonal antibodies. A total 1246 urine samples were analyzed and the detection frequency of DBP was observed 72.87% by ic-ELISA. The 95th percentile and mean concentration of DBP were 12.07 and 3.00 ng mL(-1). Acceptable recovery rates of DBP were 97.8-114.3% and coefficients variation 5.93-11.09%. The concentrations of DBP in females were found significantly higher (p<0.05) than males. Similarly, the DBP in middle aged and low educated individuals was found higher (p<0.001) than the others. Considering the adverse health effects, DBP internal exposure in the Chinese population should be reduced. The ic-ELISA method has been proved as a cost effective, specific, and highly sensitive screening tool to detect DBP in urinary samples.
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Affiliation(s)
- Lifang Zhou
- Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China
| | - Yajing Lei
- Hangzhou EPIE Bio-detection Technology Limited, Hangzhou 310051, China
| | - Dai Zhang
- Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China
| | - Shabbir Ahmed
- Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China
| | - Shuqing Chen
- Institute of Pharmacology, Toxicology and Biochemical Pharmaceutics, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China.
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Schumacher S, Muekusch S, Seitz H. Up-to-Date Applications of Microarrays and Their Way to Commercialization. MICROARRAYS (BASEL, SWITZERLAND) 2015; 4:196-213. [PMID: 27600220 PMCID: PMC4996390 DOI: 10.3390/microarrays4020196] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/01/2015] [Accepted: 04/14/2015] [Indexed: 12/12/2022]
Abstract
This review addresses up-to-date applications of Protein Microarrays. Protein Microarrays play a significant role in basic research as well as in clinical applications and are applicable in a lot of fields, e.g., DNA, proteins and small molecules. Additionally they are on the way to enter clinics in routine diagnostics. Protein Microarrays can be powerful tools to improve healthcare. An overview of basic characteristics to mediate essential knowledge of this technique is given. To reach this goal, some challenges still have to be addressed. A few applications of Protein Microarrays in a medical context are shown. Finally, an outlook, where the potential of Protein Microarrays is depicted and speculations how the future of Protein Microarrays will look like are made.
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Affiliation(s)
- Sarah Schumacher
- Branch Bioanalytics and Bioprocesses, Fraunhofer Institute for Cell Therapy and Immunology, Am Muehlenberg 13, 14476 Potsdam, Germany.
| | - Sandra Muekusch
- Branch Bioanalytics and Bioprocesses, Fraunhofer Institute for Cell Therapy and Immunology, Am Muehlenberg 13, 14476 Potsdam, Germany.
| | - Harald Seitz
- Branch Bioanalytics and Bioprocesses, Fraunhofer Institute for Cell Therapy and Immunology, Am Muehlenberg 13, 14476 Potsdam, Germany.
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Development of analytical method for ultrasensitive detection of salbutamol utilizing DNA labeled-immunoprobe. J Pharm Biomed Anal 2015; 107:204-8. [DOI: 10.1016/j.jpba.2014.12.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 12/11/2014] [Accepted: 12/14/2014] [Indexed: 12/13/2022]
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Lei Y, Liu W, Fang L, Akash MSH, Rehman K, Narenmandura H, Shi W, Lu W, Xu Y, Chen S. Assessment of urinary concentration of cotinine in Chinese pregnant women exposed to environmental tobacco smoke. CHINESE SCIENCE BULLETIN 2014. [DOI: 10.1007/s11434-014-0209-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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