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Validation of a Simple HPLC-Based Method for Lysine Quantification for Ruminant Nutrition. Molecules 2021; 26:molecules26144173. [PMID: 34299448 PMCID: PMC8304843 DOI: 10.3390/molecules26144173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
Robust and selective quantification methods are required to better analyze feed supplementation effectiveness with specific amino acids. In this work, a reversed-phase high-performance liquid chromatography method with fluorescence detection is proposed and validated for lysine quantification, one of the most limiting amino acids in ruminant nutrition and essential towards milk production. To assess and widen method applicability, different matrices were considered: namely Li2CO3 buffer (the chosen standard reaction buffer), phosphate buffer solution (to mimic media in cellular studies), and rumen inoculum. The method was validated for all three matrices and found to be selective, accurate (92% ± 2%), and precise at both the inter- and intra-day levels in concentrations up to 225 µM, with detection and quantification limits lower than 1.24 and 4.14 µM, respectively. Sample stability was evaluated when stored at room temperature, 4 °C, and -20 °C, showing consistency for up to 48 h regardless of the matrix. Finally, the developed method was applied in the quantification of lysine on real samples. The results presented indicate that the proposed method can be applied towards free lysine quantification in ruminant feeding studies and potentially be of great benefit to dairy cow nutrition supplementation and optimization.
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2
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Liu G, Xia Q, Lu Y, Zheng T, Sang S, Lv L. Influence of Quercetin and Its Methylglyoxal Adducts on the Formation of α-Dicarbonyl Compounds in a Lysine/Glucose Model System. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2233-2239. [PMID: 28233503 DOI: 10.1021/acs.jafc.6b05811] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Increasing evidence has identified α-dicarbonyl compounds, the reactive intermediates generated during Maillard reaction, as the potential factors to cause protein glycation and the development of chronic diseases. Therefore, there is an urgent need to decrease the levels of reactive dicarbonyl compounds in foods. In this study, we investigated the inhibitory effect of quercetin, a major dietary flavonoid, and its major mono- and di-MGO adducts on the formation of dicarbonyl compounds, such as methylglyoxal (MGO) and glyoxal (GO), in a lysine/glucose aqueous system, a model system to reflect the Maillard reaction in food process. Our result indicated that quercetin could efficiently inhibit the formation of MGO and GO in a time-dependent manner. Further mechanistic study was conducted by monitoring the formation of quercetin oxidation and conjugation products using LC-MS/MS. Quercetin MGO adducts, quercetin quinones, and the quinones of quercetin MGO adducts were detected in the system, indicating quercetin plays a dual role in inhibiting the formation of MGO and GO by scavenging free radicals generated in the system and trapping of MGO and GO to form MGO adducts. In addition, we prepared the mono- and di-MGO quercetin adducts and investigated their antioxidant activity and trapping capacity of MGO and GO. Our results indicated that both mono- and di-MGO quercetin adducts could scavenge the DPPH radical in a dose-dependent manner with >40% DPPH scavenged by the MGO adducts at 10 μM, and the di-MGO quercetin adduct could further trap MGO to generate tri-MGO adducts. Therefore, we demonstrate for the first time that quercetin MGO adducts retain the antioxidant activity and trapping capacity of reactive dicarbonyl species.
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Affiliation(s)
- Guimei Liu
- Department of Food Science and Technology, Nanjing Normal University , 122 Ninghai Road, Nanjing 210097, People's Republic of China
| | - Qiuqin Xia
- Department of Food Science and Technology, Nanjing Normal University , 122 Ninghai Road, Nanjing 210097, People's Republic of China
| | - Yongling Lu
- Department of Food Science and Technology, Nanjing Normal University , 122 Ninghai Road, Nanjing 210097, People's Republic of China
| | - Tiesong Zheng
- Department of Food Science and Technology, Nanjing Normal University , 122 Ninghai Road, Nanjing 210097, People's Republic of China
| | - Shengmin Sang
- Laboratory for Functional Foods and Human Health, Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural and Technical State University , North Carolina Research Campus, 500 Laureate Way, Kannapolis, North Carolina 28081, United States
| | - Lishuang Lv
- Department of Food Science and Technology, Nanjing Normal University , 122 Ninghai Road, Nanjing 210097, People's Republic of China
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3
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Attia MS, Yakout AA. Novel method for tyrosine assessment in vitro using luminescence quenching of the nano optical sensor Eu–ciprofloxacin doped in a sol–gel matrix. RSC Adv 2016. [DOI: 10.1039/c5ra25301b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A low cost and very sensitive method for the assessment of tyrosine in blood serum, urine and hair samples was developed. The method was based upon the luminescence intensity of a Eu–ciprofloxacin complex nano optical sensor.
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Affiliation(s)
- M. S. Attia
- Chemistry Department
- Faculty of Science
- University of Jeddah
- Jeddah
- Saudi Arabia
| | - Amr A. Yakout
- Chemistry Department
- Faculty of Science
- University of Jeddah
- Jeddah
- Saudi Arabia
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4
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Szterk A, Roszko M. SIMULTANEOUS DETERMINATION OF FREE AMINO ACIDS, L-CARNOSINE, PURINE, PYRIMIDINE, AND NUCLEOSIDES IN MEAT BY LIQUID CHROMATOGRAPHY/SINGLE QUADRUPOLE MASS SPECTROMETRY. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2012.758136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Arkadiusz Szterk
- a Department of Functional Food and Commodities Faculty of Human Nutrition and Consumer Sciences , Warsaw University of Life Sciences , Warsaw , Poland
| | - Marek Roszko
- b Department of Food Analysis , Institute of Agricultural and Food Biotechnology , Warsaw , Poland
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5
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Jastrzębska A, Piasta A, Filipiak-Szok A, Szłyk E. Optimization of Capillary Isotachophoretic Method for Histidine Determination in Protein Matrices. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.762582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Rodríguez C, Frias J, Vidal-Valverde C, Hernández A. Correlations between some nitrogen fractions, lysine, histidine, tyrosine, and ornithine contents during the germination of peas, beans, and lentils. Food Chem 2008. [DOI: 10.1016/j.foodchem.2007.10.073] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Lin HC, Chou YH, Yang J. Development of an aminocarboxylic acid-modified infrared chemical sensor for selective determination of tyrosine in urine. Anal Chim Acta 2008; 606:230-8. [DOI: 10.1016/j.aca.2007.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 11/08/2007] [Accepted: 11/09/2007] [Indexed: 01/17/2023]
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8
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Akyilmaz E, Erdoğan A, Oztürk R, Yaşa I. Sensitive determination of l-lysine with a new amperometric microbial biosensor based on Saccharomyces cerevisiae yeast cells. Biosens Bioelectron 2007; 22:1055-60. [PMID: 16759846 DOI: 10.1016/j.bios.2006.04.023] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2006] [Revised: 04/25/2006] [Accepted: 04/27/2006] [Indexed: 11/16/2022]
Abstract
A new amperometric microbial biosensor based on Saccharomyces cerevisiae NRRL-12632 cells, which had been induced for lysine oxidase enzyme and immobilized in gelatin by a cross-linking agent was developed for the sensitive determination of L-lysine amino acid. To construct the microbial biosensor S. cerevisiae cells were activated and cultured in a suitable culture medium. By using gelatine (8.43 mg cm(-2)) and glutaraldehyde (0.25%), cells obtained in the logarithmic phase of the growth curve at the end of a 14 h period were immobilized and fixed on a pretreated oxygen sensitive Teflon membrane of a dissolved oxygen probe. The assay procedure of the microbial biosensor is based on the determination of the differences of the respiration activity of the cells on the oxygenmeter in the absence and the presence of L-lysine. According to the end point measurement technique used in the experiments it was determined that the microbial biosensor response depended linearly on L-lysine concentrations between 1.0 and 10.0 microM with a 1 min response time. In optimization studies of the microbial biosensor, the most suitable microorganism quantities were found to be 0.97x10(5)CFU cm(-2). In addition phosphate buffer (pH 7.5; 50 mM) and 30 degrees C were obtained as the optimum working conditions. In characterization studies of the microbial biosensor some parameters such as substrate specificity, interference effects of some substances on the microbial biosensor responses, reproducibility of the biosensor and operational and storage stability were investigated.
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Affiliation(s)
- Erol Akyilmaz
- Department of Biochemistry, Faculty of Science, Ege University, 35100 Bornova-Izmir, Turkey.
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Lee CJ, Yang J. alpha-Cyclodextrin-modified infrared chemical sensor for selective determination of tyrosine in biological fluids. Anal Biochem 2006; 359:124-31. [PMID: 17046708 DOI: 10.1016/j.ab.2006.09.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Accepted: 09/06/2006] [Indexed: 11/24/2022]
Abstract
In this paper, we propose an evanescent wave-based infrared (IR) spectroscopic sensing method for the selective and sensitive detection of tyrosine in aqueous solution. In this approach, alpha-cyclodextrin (alpha-CTD) was chemically immobilized onto the surface of an IR-sensing element to attract tyrosine specifically to the surface of the sensing element. Theoretical equations were developed for the quantitative analysis of tyrosine. Based on its IR spectra, the synthesized alpha-CTD phase was stable in water. Optimal detection with this system occurred when the pH of the solution was ca. 10.5. Based on the absorption bands, we confirmed that alpha-CTD was most effective at attracting tyrosine under basic conditions. Using the unique absorption band of tyrosine at 1500 cm(-1), the alpha-CTD phase allowed the detection of tyrosine selectively from among a range of potentially interfering amino acids and other species commonly present in biological samples. For quantitative analysis, this CTD-modified phase was most suitable for sensing tyrosine at concentrations below 100 microM because of limits in the surface adsorption mechanism. The detection times were, in some instances, lower than 5 min. For a detection time of 10 min, the detection limit of tyrosine was ca. 0.4 microM.
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Affiliation(s)
- Chung-Jay Lee
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan
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Wang T, Chen YW, Zheng H, Novak TJ. Subambient Temperature Reversed-Phase High-Performance Liquid Chromatography and Hydrolysis Kinetics of a Para-Substituted Benzenesulfonyl Chloride. J LIQ CHROMATOGR R T 2006. [DOI: 10.1080/10826079808005883] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tao Wang
- a Analytical Research Department , Merck Research Laboratories , P. O. Box 2000, R80Y-335, Rahway, NJ, 07065-0900
| | - Yadan W. Chen
- a Analytical Research Department , Merck Research Laboratories , P. O. Box 2000, R80Y-335, Rahway, NJ, 07065-0900
| | - Hong Zheng
- a Analytical Research Department , Merck Research Laboratories , P. O. Box 2000, R80Y-335, Rahway, NJ, 07065-0900
| | - Thomas J. Novak
- a Analytical Research Department , Merck Research Laboratories , P. O. Box 2000, R80Y-335, Rahway, NJ, 07065-0900
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11
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Huang GG, Yang J. Development of infrared optical sensor for selective detection of tyrosine in biological fluids. Biosens Bioelectron 2004; 21:408-18. [PMID: 16076429 DOI: 10.1016/j.bios.2004.11.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2004] [Revised: 10/15/2004] [Accepted: 11/02/2004] [Indexed: 01/13/2023]
Abstract
In this paper, a new and simple evanescent wave type of infrared biosensor is described for the selective detection of tyrosine in biological fluids. This sensor is based on the formation of copper complexes between the sensing phase and tyrosine. To demonstrate that this principle was applicable to the selective detection of tyrosine, a proline-modified sensing phase was synthesized on the surface of the internal reflection elements. This sensing phase was saturated with copper ions to allow it to interact with tyrosine units in aqueous solution through the formation of stable proline-Cu2+-tyrosine complexes. Tyrosine exhibits a unique spectral feature in its absorption band at 1515 cm-1. This band significantly differs from those of other amino acids and provides a further method for the discrimination of tyrosine. By investigating the signals from 12 amino acids, only three amino acids, each containing a phenyl group, could be sensed selectively by this sensing phase. Based on the unique absorption of tyrosine located at 1515 cm-1, tyrosine can be selectively detected. To perform quantitative analyses of tyrosine using this sensing phase, a theoretical working equation was developed and correlated with the experimental data. The analytical results indicated that the developed equations do explain and predict the detection behaviors of the proposed sensing scheme. Using the optimal conditions, the regression coefficients for standard curves of tyrosine recorded in the region of concentrations below 600 microM were higher than 0.996 under either equilibrium or non-equilibrium conditions. Detection limit of tyrosine when using this method was ca. 3 microM.
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Affiliation(s)
- Genin Gary Huang
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan
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12
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Casella IG, Contursi M. Isocratic ion chromatographic determination of underivatized amino acids by electrochemical detection. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(02)01517-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Ghanem A, Skonberg D. Effect of preparation method on the capture and release of biologically active molecules in chitosan gel beads. J Appl Polym Sci 2002. [DOI: 10.1002/app.10393] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Beckett EL, Lawrence NS, Davis J, Compton RG. NITRATION: A SELECTIVE ELECTROCHEMICAL LABEL FOR THE DETERMINATION OF ACTIVATED AROMATICS. ANAL LETT 2002. [DOI: 10.1081/al-120002534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Castillo G, Aangeles Sanz M, Aangeles Serrano M, Hernandez A. Influence of Protein Source, Type, and Concentration, and Product Form on the Protein Quality of Commercial Enteral Formulas. J Food Sci 2002. [DOI: 10.1111/j.1365-2621.2002.tb11405.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Bartzatt R. Fluorescent labeling of drugs and simple organic compounds containing amine functional groups, utilizing dansyl chloride in Na(2)CO(3) buffer. J Pharmacol Toxicol Methods 2001; 45:247-53. [PMID: 11755390 DOI: 10.1016/s1056-8719(01)00157-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fluorescent labeling of amine functional groups using dansyl chloride (DNS-Cl), and in sodium carbonate buffer, allowed the detection of 1 microg amounts of analytes. The methodology presented allows dansylation of primary, secondary, and tertiary amine groups at a temperature of 25 degrees C. The dansylation of tertiary amines involves a chemical reaction which removes one substituent (or branch) of the amine group. A one molar working concentration of Na(2)CO(3) is used, and is at pH 11.0. Compounds such as isopropylamine, dipropylamine, diethylamine, triethylamine, triisooctylamine, and N,N-dimethylaniline were labeled by use of DNS-Cl from samples obtained from a complex mixture of alkanes. The compound p-chloroaniline contains a primary amine group and is a solid at 25 degrees, quickly dissolves in the one molar sodium carbonate buffer and is dansylated in 15 min. Heroin, which contains a tertiary amine group, was extracted into ethyl acetate from an aqueous solution, then reacted with DNS-Cl. Benzocaine, a local anesthetic, was dansylated in 15 min. Tertiary amine groups incorporated in a rigid ring system, such as for caffeine, strychnine, and the ionic salt form of cocaine hydrochloride did not react with DNS-Cl under these conditions. The reaction time for tertiary amines was 2 h or less, and 15 min for compounds having primary and secondary amine groups. Separation of the dansylated compounds from unreacted DNS-Cl was accomplished by diethyl ether extraction of the aqueous reaction solution, followed by thin layer chromatography using various organic solvents such as acetone and methylene chloride.
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Affiliation(s)
- R Bartzatt
- Chemistry Department, College of Arts and Sciences, University of Nebraska, Omaha, NE 68182, USA.
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17
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Molnár-Perl I. Role of chromatography in the analysis of sugars, carboxylic acids and amino acids in food. J Chromatogr A 2000; 891:1-32. [PMID: 10999622 DOI: 10.1016/s0021-9673(00)00598-7] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An overview is presented of chromatographic methods currently in use to determine sugars, carboxylic acids and amino acids in foods: high-performance liquid chromatography, gas chromatography and capillary electrophoresis. As a basis of selection the following approaches can be distinguished: quantitation of constituents of several food matrices, without derivatization and in the form of different derivatives, in the presence of the matrix, or subsequently to various work-up procedures.
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Affiliation(s)
- I Molnár-Perl
- Institute of Inorganic and Analytical Chemistry, L. Eötvös University, Budapest, Hungary.
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Amino Acids. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0301-4770(08)60309-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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19
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Divi RL, Chang HC, Doerge DR. Anti-thyroid isoflavones from soybean: isolation, characterization, and mechanisms of action. Biochem Pharmacol 1997; 54:1087-96. [PMID: 9464451 DOI: 10.1016/s0006-2952(97)00301-8] [Citation(s) in RCA: 168] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The soybean has been implicated in diet-induced goiter by many studies. The extensive consumption of soy products in infant formulas and in vegetarian diets makes it essential to define the goitrogenic potential. In this report, it was observed that an acidic methanolic extract of soybeans contains compounds that inhibit thyroid peroxidase- (TPO) catalyzed reactions essential to thyroid hormone synthesis. Analysis of the soybean extract using HPLC, UV-VIS spectrophotometry, and LC-MS led to identification of the isoflavones genistein and daidzein as major components by direct comparison with authentic standard reference isoflavones. HPLC fractionation and enzymatic assay of the soybean extract showed that the components responsible for inhibition of TPO-catalyzed reactions coeluted with daidzein and genistein. In the presence of iodide ion, genistein and daidzein blocked TPO-catalyzed tyrosine iodination by acting as alternate substrates, yielding mono-, di-, and triiodoisoflavones. Genistein also inhibited thyroxine synthesis using iodinated casein or human goiter thyroglobulin as substrates for the coupling reaction. Incubation of either isoflavone with TPO in the presence of H2O2 caused irreversible inactivation of the enzyme; however, the presence of iodide ion in the incubations completely abolished the inactivation. The IC50 values for inhibition of TPO-catalyzed reactions by genistein and daidzein were ca. 1-10 microM, concentrations that approach the total isoflavone levels (ca. 1 microM) previously measured in plasma from humans consuming soy products. Because inhibition of thyroid hormone synthesis can induce goiter and thyroid neoplasia in rodents, delineation of anti-thyroid mechanisms for soy isoflavones may be important for extrapolating goitrogenic hazards identified in chronic rodent bioassays to humans consuming soy products.
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Affiliation(s)
- R L Divi
- National Center for Toxicological Research, Jefferson, AR 72079, USA
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