1
|
Yan S, Wu L, Xue X. α-Dicarbonyl compounds in food products: Comprehensively understanding their occurrence, analysis, and control. Compr Rev Food Sci Food Saf 2023; 22:1387-1417. [PMID: 36789800 DOI: 10.1111/1541-4337.13115] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/31/2022] [Accepted: 01/14/2023] [Indexed: 02/16/2023]
Abstract
α-Dicarbonyl compounds (α-DCs) are readily produced during the heating and storage of foods, mainly through the Maillard reaction, caramelization, lipid-peroxidation, and enzymatic reaction. They contribute to both the organoleptic properties (i.e., aroma, taste, and color) and deterioration of foods and are potential indicators of food quality. α-DCs are also important precursors to hazardous substances, such as acrylamide, furan, advanced lipoxidation end products, and advanced glycation end products, which are genotoxic, neurotoxic, and linked to several diseases. Recent studies have indicated that dietary α-DCs can elevate plasma α-DC levels and lead to "dicarbonyl stress." To accurately assess their health risks, quantifying α-DCs in food products is crucial. Considering their low volatility, inability to absorb ultraviolet light, and high reactivity, the analysis of α-DCs in complex food systems is a challenge. In this review, we comprehensively cover the development of scientific approaches, from extraction, enrichment, and derivatization, to sophisticated detection techniques, which are necessary for quantifying α-DCs in different foods. Exposure to α-DCs is inevitable because they exist in most foods. Recently, novel strategies for reducing α-DC levels in foods have become a hot research topic. These strategies include the use of new processing technologies, formula modification, and supplementation with α-DC scavengers (e.g., phenolic compounds). For each strategy, it is important to consider the potential mechanisms underlying the formation and removal of process contaminants. Future studies are needed to develop techniques to control α-DC formation during food processing, and standardized approaches are needed to quantify and compare α-DCs in different foods.
Collapse
Affiliation(s)
- Sha Yan
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, China
| | - Liming Wu
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaofeng Xue
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| |
Collapse
|
2
|
Shallan AI, Abdel-Hakim A, Hammad MA, Abou El-Alamin MM. Highly sensitive spectrofluorimetric method for the determination of the genotoxic methylglyoxal in glycerol-containing pharmaceuticals and dietary supplements. LUMINESCENCE 2023; 38:39-46. [PMID: 36482153 DOI: 10.1002/bio.4419] [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: 07/21/2022] [Revised: 11/02/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022]
Abstract
Methylglyoxal (MGO) is a genotoxic α-dicarbonyl compound. Recently, it was found to be formed in glycerol preparations during storage through auto-oxidation. A simple fluorimetric determination of the carcinogenic degradation product of glycerol, MGO, was developed and validated. The proposed method is based on the derivatization of MGO with 4-carbomethoxybenzaldehyde (CMBA) and ammonium acetate to yield a fluorescent imidazole derivative that can be measured at 415 nm after excitation at 322 nm. The optimized conditions were determined to be 0.2 M CMBA, 1.0 M ammonium acetate and a reaction time of 40 min at 90°C using ethanol as diluting solvent. The linear range was 10.0-200.0 ng/ml. Detection and quantification limits were 2.22 and 6.72 ng/ml, respectively. The proposed method was validated according to International Council for Harmonisation (ICH) guidelines and compared with the reported method and no significant difference was found. It was successfully applied for the determination of MGO in six different glycerol-containing pharmaceutical preparations and dietary supplements.
Collapse
Affiliation(s)
- Aliaa I Shallan
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Ali Abdel-Hakim
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | - Mohamed A Hammad
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | - Maha M Abou El-Alamin
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| |
Collapse
|
3
|
Qi C, Jin Y, Cheng S, Di L, Wang X, Zhang M, Zhang L, Li XL, Han Y, Ma Q, Min JZ. A novel UHPLC-MS/MS method for the determination of four α-dicarbonyl compounds in wine and dynamic monitoring in human urine after drinking. Food Res Int 2023; 163:112170. [PMID: 36596116 DOI: 10.1016/j.foodres.2022.112170] [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: 08/21/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022]
Abstract
α-dicarbonyl compounds (α-DCs) serve as potential biomarkers for oxidative stress-related diseases but are difficult to detect.To study the metabolism of carbonyl compounds, we developed a new mass spectrometry probe, 3-benzyl-2-oxo-4λ3-thiazolidine-4-carbohydrazide (BOTC), containing hydrazyl groups for the targeted detection of carbonyl functional groups.In a novel approach, we used BOTC pre-column derivatization with ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) to simultaneously detect four kinds of α-DCs in red wine as well as in urine after drinking. The α-DCs were completely separated (R2 ≥ 0.9995), detection was sensitive (detection limit was 12.5-50 fmol), consistent (intraday and interday precision was 0.1-5.7 %), and efficient (average recoveries were 103.3-110.2 %). The method was applied to the analysis of α-DCs in different wines and the dynamic monitoring of transit and excretion in vivo after drinking. Our novel method provides a new strategy for the detection of α-dicarbonyl compounds in red wine and dicarbonyl compounds produced in oxidative stress-related diseases.
Collapse
Affiliation(s)
- Chao Qi
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Yueying Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Shengyu Cheng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Lei Di
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xin Wang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Minghui Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Lingli Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xi-Ling Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Yu Han
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| | - Qingkun Ma
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| | - Jun Zhe Min
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| |
Collapse
|
4
|
Al-Robaiy S, Navarrete Santos A, Simm A. RAGE-Dependent Effect of Exogenous Methylglyoxal Intake on Lung Biomechanics in Mice. Nutrients 2022; 15:nu15010023. [PMID: 36615680 PMCID: PMC9823870 DOI: 10.3390/nu15010023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Methylglyoxal (MG) is a known highly reactive dicarbonyl and precursor to free radicals and advanced glycation end-products (AGEs). It is discussed to be involved in tissue aging and in the pathogenesis of different degenerative diseases. The effect of long-term oral administration of MG, simulating dietary MG intake, on the lung biomechanics of wild type (WT) and receptor for advanced glycation end-products knockout (RAGE-KO) mice was studied using an ex vivo ventilation system starting at the age of 6 months and after feeding for 6 and 12 months with MG. Our results showed that MG was taken up in the circulation and efficiently excreted with urine. The amount of free urinary MG measured after 12 months of feeding was lowered. After 12 months feeding, a significant airway resistance increase accompanied by a decrease of the maximal inspiratory airflow was observed in WT animals. No effect of MG in lung function of RAGE-KO mice could be detected. Despite the evidence that MG entered the systemic circulation, no MG-derived AGE accumulation was detected in the lung lysates in dependency on MG-feeding. Our data indicate that the short-term feeding of MG has little effect in vivo. Only after long-term treatment was MG secretion reduced, leading to tissue impairment.
Collapse
Affiliation(s)
- Samiya Al-Robaiy
- Center for Basic Medical Research (ZMG), University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
- Correspondence: ; Tel.: +49-3455571339; Fax: +49-3455575524
| | - Alexander Navarrete Santos
- Center for Basic Medical Research (ZMG), University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Andreas Simm
- Center for Basic Medical Research (ZMG), University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| |
Collapse
|
5
|
Cruz N, Flores M, Urquiaga I, Ávila F. Modulation of 1,2-Dicarbonyl Compounds in Postprandial Responses Mediated by Food Bioactive Components and Mediterranean Diet. Antioxidants (Basel) 2022; 11:antiox11081513. [PMID: 36009232 PMCID: PMC9405221 DOI: 10.3390/antiox11081513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/16/2022] [Accepted: 07/26/2022] [Indexed: 01/17/2023] Open
Abstract
Glycoxidative stress with the consequent generation of advanced glycation end products has been implied in the etiology of numerous non-communicable chronic diseases. During the postprandial state, the levels of 1,2-dicarbonyl compounds can increase, depending on numerous factors, including characteristics of the subjects mainly related to glucose metabolism disorders and nutritional status, as well as properties related to the chemical composition of meals, including macronutrient composition and the presence of dietary bioactive molecules and macromolecules. In this review, we examine the chemical, biochemical, and physiological pathways that contribute to postprandial generation of 1,2-dicarbonyl compounds. The modulation of postprandial 1,2-dicarbonyl compounds is discussed in terms of biochemical pathways regulating the levels of these compounds, as well as the effect of phenolic compounds, dietary fiber, and dietary patterns, such as Mediterranean and Western diets.
Collapse
Affiliation(s)
- Nadia Cruz
- Escuela de Nutrición y Dietética, Facultad de Ciencias de la Salud, Universidad de Talca, Campus Lircay, Talca 3460000, Chile;
| | - Marcos Flores
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomás, Talca 3460000, Chile;
| | - Inés Urquiaga
- Center for Molecular Nutrition and Chronic Diseases, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago 8331150, Chile;
| | - Felipe Ávila
- Escuela de Nutrición y Dietética, Facultad de Ciencias de la Salud, Universidad de Talca, Campus Lircay, Talca 3460000, Chile;
- Correspondence: ; Tel.: +56-71-2418964
| |
Collapse
|
6
|
Shi L, Li Y, Zhou X, Guo Y, Han Q, Xia W, Yan C, Zhang L, Zhang W. Isopropyl-naphthylamide-hydrazine as a novel fluorescent reagent for ultrasensitive determination of carbonyl species on UPLC. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Lin CE, Lin PY, Yang WC, Huang YS, Lin TY, Chen CM, Chen HS, Lee JA, Chen SM. Evaluation of the nephrotoxicity and safety of low-dose aristolochic acid, extending to the use of Xixin (Asurum), by determination of methylglyoxal and d-lactate. JOURNAL OF ETHNOPHARMACOLOGY 2021; 272:113945. [PMID: 33617966 DOI: 10.1016/j.jep.2021.113945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/18/2021] [Accepted: 02/14/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Most Aristolochiaceae plants are prohibited due to aristolochic acid nephropathy (AAN), except Xixin (Asarum spp.). Xixin contains trace amounts of aristolochic acid (AA) and is widely used in Traditional Chinese Medicine. Methylglyoxal and d-lactate are regarded as biomarkers for nephrotoxicity. AIM OF THE STUDY The use of Xixin (Asarum spp.) is essential and controversial. This study aimed to evaluate tubulointerstitial injury and interstitial renal fibrosis by determining urinary methylglyoxal and d-lactate after withdrawal of low-dose AA in a chronic mouse model. MATERIALS AND METHODS C3H/He mice in the AA group (n = 24/group) were given ad libitum access to distilled water containing 3 μg/mL AA (0.5 mg/kg/day) for 56 days and drinking water from days 57 to 84. The severity of tubulointerstitial injury and fibrosis were evaluated using the tubulointerstitial histological score (TIHS) and Masson's trichrome staining. Urinary and serum methylglyoxal were determined by high-performance liquid chromatography (HPLC); urinary d-lactate were determined by column-switching HPLC. RESULTS After AA withdrawal, serum methylglyoxal in the AA group increased from day 56 (429.4 ± 48.3 μg/L) to 84 (600.2 ± 99.9 μg/L), and peaked on day 70 (878.3 ± 171.8 μg/L; p < 0.05); TIHS and fibrosis exhibited similar patterns. Urinary methylglyoxal was high on day 56 (3.522 ± 1.061 μg), declined by day 70 (1.583 ± 0.437 μg) and increased by day 84 (2.390 ± 0.130 μg). Moreover, urinary d-lactate was elevated on day 56 (82.10 ± 18.80 μg) and higher from day 70 (201.10 ± 90.82 μg) to 84 (193.28 ± 61.32 μg). CONCLUSIONS Methylglyoxal is induced after AA-induced tubulointerstitial injury, so methylglyoxal excretion and metabolism may be a detoxification and repair strategy. A low cumulative AA dose is the key factor that limits tubulointerstitial injury and helps to repair. Thus, AA-containing herbs, especially Xixin, should be used at low doses for short durations (less than one month).
Collapse
Affiliation(s)
- Chia-En Lin
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Po-Yeh Lin
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Wen-Chi Yang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Yu-Shen Huang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Tzu-Yao Lin
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Chien-Ming Chen
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, Taiwan.
| | - Hung-Shing Chen
- Graduate Institute of Electro-optical Engineering, National Taiwan University of Science and Technology, No.43, Keelung Rd., Sec.4, Da'an Dist., Taipei, Taiwan.
| | - Jen-Ai Lee
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| | - Shih-Ming Chen
- School of Pharmacy, College of Pharmacy, Taipei Medical University, No.250 Wu-Hsing Street, Taipei, 110, Taiwan.
| |
Collapse
|
8
|
Utilizing methylglyoxal and D-lactate in urine to evaluate saikosaponin C treatment in mice with accelerated nephrotoxic serum nephritis. PLoS One 2020; 15:e0241053. [PMID: 33104740 PMCID: PMC7588094 DOI: 10.1371/journal.pone.0241053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 10/07/2020] [Indexed: 11/19/2022] Open
Abstract
The relationship between methylglyoxal (MGO) and D-lactate during saikosaponin C (SSC) treatment of mice with accelerated nephrotoxic serum (NTS) nephritis was investigated. NTS nephritis was induced by administration of anti-basement membrane antibodies to C57BL/6 mice and three dosages of SSC were administered for 14 days. Proteinuria, blood urea nitrogen, serum creatinine, renal histology, urinary MGO and d-lactate changes were examined. Compared to the NTS control group, the middle dosage (10 mg/kg/day) of SSC significantly alleviated the development of nephritis based on urine protein measurements (34.40 ± 6.85 vs. 17.33 ± 4.79 mg/day, p<0.05). Pathological observation of the glomerular basement membrane (GBM) revealed monocyte infiltration, hypertrophy, and crescents were alleviated, and injury scoring also showed improved efficacy for the middle dose of SSC during nephritis (7.92 ± 1.37 vs. 3.50 ± 1.14, p<0.05). Moreover, the significant decreases in urinary levels of MGO (24.71 ± 3.46 vs. 16.72 ± 2.36 μg/mg, p<0.05) and D-lactate (0.31 ± 0.04 vs. 0.23 ± 0.02 μmol/mg, p<0.05) were consistent with the biochemical and pathological examinations. This study demonstrates that MGO and D-lactate may reflect the extent of damage and the efficacy of SSC in NTS nephritis; further studies are required to enable clinical application.
Collapse
|
9
|
Lin PY, Chen SM, Hsieh CL, Lin CY, Huang YS, Hamase K, Lee JA. Determination of temporal changes in serum and urinary lactate and 3-hydroxybutyrate enantiomers in mice with nephrotoxic serum nephritis by multi-dimensional HPLC. J Pharm Biomed Anal 2020; 188:113367. [DOI: 10.1016/j.jpba.2020.113367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 10/24/2022]
|
10
|
Methylglyoxal Detoxification Revisited: Role of Glutathione Transferase in Model Cyanobacterium Synechocystis sp. Strain PCC 6803. mBio 2020; 11:mBio.00882-20. [PMID: 32753490 PMCID: PMC7407080 DOI: 10.1128/mbio.00882-20] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In most organisms, methylglyoxal (MG), a toxic metabolite by-product that causes diabetes in humans, is predominantly detoxified by the glyoxalase enzymes. This process begins with the so-called “spontaneous” conjugation of MG with the cytoprotectant metabolite glutathione (GSH). In this study, we unravel a logical, but as yet unsuspected, link between MG detoxification and a (prokaryotic) representative of the ubiquitous glutathione transferase (GST) enzymes. We show that a GST of a model cyanobacterium plays a prominent role in the detoxification of MG in catalyzing its conjugation with GSH. This finding is important because this reaction, always regarded as nonenzymatic, could exist in plants and/or human and thus have an impact on agriculture and/or human health. Methylglyoxal (MG) is a detrimental metabolic by-product that threatens most organisms (in humans MG causes diabetes). MG is predominantly detoxified by the glyoxalase pathway. This process begins with the conjugation of MG with glutathione (GSH), yielding a hemithioacetal product that is subsequently transformed by the glyoxalase enzymes into d-lactate and GSH. MG has been overlooked in photosynthetic organisms, although they inevitably produce it not only by the catabolism of sugars, lipids, and amino acids, as do heterotrophic organisms, but also by their active photoautotrophic metabolism. This is especially true for cyanobacteria that are regarded as having developed photosynthesis and GSH-dependent enzymes to detoxify the reactive oxygen species produced by their photosynthesis (CO2 assimilation) and respiration (glucose catabolism), which they perform in the same cell compartment. In this study, we used a combination of in vivo and in vitro approaches to characterize a logical, but as yet never described, link between MG detoxification and a (prokaryotic) representative of the evolutionarily conserved glutathione transferase (GST) detoxification enzymes. We show that the Sll0067 GST of the model cyanobacterium Synechocystis sp. strain PCC 6803 plays a prominent role in MG tolerance and detoxification, unlike the other five GSTs of this organism. Sll0067 catalyzes the conjugation of MG with GSH to initiate its elimination driven by glyoxalases. These results are novel because the conjugation of MG with GSH is always described as nonenzymatic. They will certainly stimulate the analysis of Sll0067 orthologs from other organisms with possible impacts on human health (development of biomarkers or drugs) and/or agriculture.
Collapse
|
11
|
Chen SM, Chen TH, Chang HT, Lin TY, Lin CY, Tsai PY, Imai K, Chen CM, Lee JA. Methylglyoxal and D-lactate in cisplatin-induced acute kidney injury: Investigation of the potential mechanism via fluorogenic derivatization liquid chromatography-tandem mass spectrometry (FD-LC-MS/MS) proteomic analysis. PLoS One 2020; 15:e0235849. [PMID: 32649695 PMCID: PMC7351171 DOI: 10.1371/journal.pone.0235849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/24/2020] [Indexed: 02/08/2023] Open
Abstract
Nephrotoxicity severely limits the chemotherapeutic efficacy of cisplatin (CDDP). Oxidative stress is associated with CDDP-induced acute kidney injury (AKI). Methylglyoxal (MG) forms advanced glycation end products that elevate oxidative stress. We aimed to explore the role of MG and its metabolite D-lactate and identify the proteins involved in CDDP-induced AKI. Six-week-old female BALB/c mice were intraperitoneally administered CDDP (5 mg/kg/day) for 3 or 5 days. Blood urea nitrogen (42.6 ± 7.4 vs. 18.3 ± 2.5; p < 0.05) and urinary N-acetyl-β-D-glucosaminide (NAG; 4.89 ± 0.61 vs. 2.43 ± 0.31 U/L; p < 0.05) were significantly elevated in the CDDP 5-day group compared to control mice. Histological analysis confirmed AKI was successfully induced. Confocal microscopy revealed TNF-α was significantly increased in the CDDP 5-day group. Fluorogenic derivatized liquid chromatography-tandem mass spectrometry (FD-LC-MS/MS) showed the kidney MG (36.25 ± 1.68 vs. 18.95 ± 2.24 mg/g protein, p < 0.05) and D-lactate (1.78 ± 0.29 vs. 1.12 ± 0.06 mol/g protein, p < 0.05) contents were significantly higher in the CDDP 5-day group than control group. FD-LC-MS/MS proteomics identified 33 and nine altered peaks in the CDDP 3-day group and CDDP 5-day group (vs. control group); of the 35 proteins identified using the MOSCOT database, 11 were antioxidant-related. Western blotting confirmed that superoxide dismutase 1 (SOD-1) and parkinson disease protein 7 (DJ-1) are upregulated and may participate with MG in CDDP-induced AKI. This study demonstrates TNF-α, MG, SOD-1 and DJ-1 play crucial roles in CDDP-induced AKI.
Collapse
Affiliation(s)
- Shih-Ming Chen
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Tsung-Hui Chen
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Hui-Ting Chang
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Department of Health, Taipei City Government, Taipei, Taiwan
| | - Tzu-Yao Lin
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chia-Yu Lin
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Department of Pharmacy, Taipei Medical University Hospital, Taipei, Taiwan
| | - Pei-Yun Tsai
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- Department of Pharmacy, Wan-Fang Hospital, Taipei, Taiwan
| | - Kazuhiro Imai
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Chien-Ming Chen
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, Taiwan
| | - Jen-Ai Lee
- Department of Pharmacy, School of Pharmacy, Taipei Medical University, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
12
|
Zunkel K, Simm A, Bartling B. Long-term intake of the reactive metabolite methylglyoxal is not toxic in mice. Food Chem Toxicol 2020; 141:111333. [PMID: 32298726 DOI: 10.1016/j.fct.2020.111333] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/13/2020] [Accepted: 04/08/2020] [Indexed: 01/09/2023]
Abstract
Reactive carbonyls, including methylglyoxal (MG), are considered toxic compounds in foodstuffs because they irreversibly modify proteins and produce advanced glycation end products (AGEs). Therefore, we studied the long-term effect of increased MG intake in mature adult mice. Six-month-old C57BL/6N mice received MG by drinking water (2.5 mg/ml; i.e., 200-300 mg/kg BW/d) until death. This treatment caused an immediate strong increase in urine MG and a delayed moderate increase in plasma MG. At 24 months of age, mice administered MG showed no changes in the blood and tissue activity of glyoxalase-1 (Glo1), an intracellular MG-detoxifying enzyme; no signs of renal insufficiency and diabetes, including unchanged AGE modifications of plasma and vessel proteins; reduced tumour incidence; and slightly increased survival. Mice simultaneously deficient in the receptor for AGEs (RAGE) and overexpressing Glo1 exhibited higher basal plasma MG levels and did generally not respond to long-term MG intake. In vitro experiments supported the minor relevance of Glo1 in the detoxification of circulating MG but the important role of plasma albumin as an MG scavenger. In conclusion, the detoxification of dietary MG through renal excretion and further mechanisms largely prevents the toxicity of MG and possibly other food-derived reactive carbonyls in mature adults.
Collapse
Affiliation(s)
- Katja Zunkel
- Department of Cardiac Surgery, Mid-German Heart Centre, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Andreas Simm
- Department of Cardiac Surgery, Mid-German Heart Centre, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Babett Bartling
- Department of Cardiac Surgery, Mid-German Heart Centre, University Hospital Halle (Saale), Martin Luther University Halle-Wittenberg, Halle (Saale), Germany; Department of Animal Health Management, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
| |
Collapse
|
13
|
Effect of prednisolone on glyoxalase 1 in an inbred mouse model of aristolochic acid nephropathy using a proteomics method with fluorogenic derivatization-liquid chromatography-tandem mass spectrometry. PLoS One 2020; 15:e0227838. [PMID: 31968011 PMCID: PMC6975546 DOI: 10.1371/journal.pone.0227838] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/30/2019] [Indexed: 01/08/2023] Open
Abstract
Prednisolone is involved in glucose homeostasis and has been used for treatment for aristolochic acid (AA) nephropathy (AAN), but its effect on glycolysis in kidney has not yet been clarified. This study aims to investigate the effect in terms of altered proteins after prednisolone treatment in a mice model of AAN using a proteomics technique. The six-week C3H/He female mice were administrated AA (0.5 mg/kg/day) for 56 days. AA+P group mice were then given prednisolone (2 mg/kg/day) via oral gavage for the next 14 days, and AA group mice were fed water instead. The tubulointerstitial damage was improved after prednisolone treatment comparing to that of AA group. Kidney homogenates were harvested to perform the proteomics analysis with fluorogenic derivatization-liquid chromatography-tandem mass spectrometry method (FD-LC-MS/MS). On the other hand, urinary methylglyoxal and D-lactate levels were determined by high performance liquid chromatography with fluorescence detection. There were 47 altered peaks and 39 corresponding proteins on day 14 among the groups, and the glycolysis-related proteins, especially glyoxalase 1 (GLO1), fructose-bisphosphate aldolase B (aldolase B), and triosephosphate isomerase (TPI), decreased in the AA+P group. Meanwhile, prednisolone decreased the urinary amount of methylglyoxal (AA+P: 2.004 ± 0.301 μg vs. AA: 2.741 ± 0.630 μg, p < 0.05), which was accompanied with decrease in urinary amount of D-lactate (AA+P: 54.07 ± 5.45 μmol vs. AA: 86.09 ± 8.44 μmol, p < 0.05). Prednisolone thus alleviated inflammation and interstitial renal fibrosis. The renal protective mechanism might be associated with down-regulation of GLO1 via reducing the contents of methylglyoxal derived from glycolysis. With the aid of proteomics analysis and the determination of methylglyoxal and its metabolite-D-lactate, we have demonstrated for the first time the biochemical efficacy of prednisolone, and urinary methylglyoxal and its metabolite-D-lactate might be potential biomarkers for AAN.
Collapse
|
14
|
Wang XJ, Zhang HX, Li H, Zhu AH, Gao WY. Measurement of α-dicarbonyl compounds in human saliva by pre-column derivatization HPLC. Clin Chem Lab Med 2019; 57:1915-1922. [PMID: 31377732 DOI: 10.1515/cclm-2019-0350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/17/2019] [Indexed: 02/02/2023]
Abstract
Background α-Dicarbonyl compounds (α-DCs) have been detected in body fluids including plasma and urine and elevation of this sort of compounds in vivo has been associated with the development of many kinds of chronic diseases. However whether α-DCs are present in human saliva, and if their presence/absence can be related with various chronic diseases is yet to be determined. Methods In this study, a pre-column derivatization HPLC-UV method was developed to measure 3-deoxyglucosone (3-DG), glyoxal (GO), methylglyoxal (MGO), diacetyl (DA), and pentane-2,3-dione (PD) in human saliva employing 4-(2,3-dimethyl-6-quinoxalinyl)-1,2-benzenediamine (DQB) as a derivatizing reagent. The derivatization of the α-DCs is fast and the conditions are facile. The method was evaluated and the results show that it is suitable for the quantification of α-DCs in human saliva. Results In the measurements of these α-DCs in the saliva of 15 healthy subjects and 23 type 2 diabetes mellitus (T2DM) patients, we found that the concentrations of GO and MGO in the saliva of the diabetic patients were significantly higher than those in healthy subjects. As far as we know, this is the first time that salivary α-DC concentrations have been determined and associated with T2DM. Conclusions The developed method would be useful for the measurement of the salivary α-DC levels and the data acquired could be informative in the early screening for diabetes.
Collapse
Affiliation(s)
- Xin-Jie Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, Xi'an, Shaanxi, P.R. China
| | - Hong-Xia Zhang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, Xi'an, Shaanxi, P.R. China
| | - Heng Li
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, Xi'an, Shaanxi, P.R. China
| | - Ai-Hua Zhu
- The Shaanxi Key Laboratory of Chinese Medicine Research and Development, Xi'an, P.R. China
| | - Wen-Yun Gao
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, P.R. China
| |
Collapse
|
15
|
Kishikawa N, El-Maghrabey MH, Kuroda N. Chromatographic methods and sample pretreatment techniques for aldehydes determination in biological, food, and environmental samples. J Pharm Biomed Anal 2019; 175:112782. [DOI: 10.1016/j.jpba.2019.112782] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 11/26/2022]
|
16
|
Dhananjayan K, Irrgang F, Raju R, Harman DG, Moran C, Srikanth V, Münch G. Determination of glyoxal and methylglyoxal in serum by UHPLC coupled with fluorescence detection. Anal Biochem 2019; 573:51-66. [PMID: 30796906 DOI: 10.1016/j.ab.2019.02.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 02/16/2019] [Indexed: 01/17/2023]
Abstract
Glyoxal (GO) and methylglyoxal (MGO) are two important biomarkers in diabetes. Analytical methods for determination of GO and MGO in serum samples are either HPLC with UV-Vis (low sensitivity) or MS/MS (expensive) detection. These disadvantages have hampered the introduction of these biomarkers as a routine analyte for diabetes diagnostics into the clinical laboratory. In this study, we introduce a UHPLC method with fluorescence detection for the measurement of GO and MGO in serum samples by pre-column derivatization at neutral pH with 5, 6-diamino-2,4-dihydroxypyrimidine sulfate (DDP) to form lumazines. The method was validated as per FDA guidelines. Using this method, we have determined GO and MGO in a variety of animal serum samples, and for example, determined the GO and MGO concentration in adult bovine serum to be 852 ± 27 and 192 ± 10 nmol/L, respectively. In human serum, GO and MGO levels in non-diabetic subjects (n = 14) were determined to be 154 ± 88 and 98 ± 27 nmol/L, and in serum samples from subjects with diabetes (n = 14) 244 ± 137 and 190 ± 68 nmol/L, respectively. In addition, interference studies showed that physiological serum components did not lead to an artificial increase in the levels of GO and MGO.
Collapse
Affiliation(s)
- Karthik Dhananjayan
- Department of Pharmacology, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Felix Irrgang
- Department of Pharmacology, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Ritesh Raju
- Department of Pharmacology, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - David G Harman
- Department of Pharmacology, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Chris Moran
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, Victoria, 3199, Australia
| | - Velandai Srikanth
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, Victoria, 3199, Australia; Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania 7000, Australia
| | - Gerald Münch
- Department of Pharmacology, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia; NICM Health Research Institute, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.
| |
Collapse
|
17
|
Wang XJ, Ma SB, Liu ZF, Li H, Gao WY. Elevated levels of α-dicarbonyl compounds in the plasma of type II diabetics and their relevance with diabetic nephropathy. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1106-1107:19-25. [PMID: 30639946 DOI: 10.1016/j.jchromb.2018.12.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/19/2018] [Accepted: 12/27/2018] [Indexed: 02/02/2023]
Abstract
The presence of α‑dicarbonyl compounds (α-DCs) in vivo has been associated with the development of complications of diabetes mellitus (DM) and also with other chronic diseases. Therefore, quantitative analysis of α-DCs in body fluids is crucial to understand their roles in the formation of these chronic diseases. We established in this study a practical HPLC-UV method to measure 3‑deoxyglucosone (3-DG), glyoxal (GO), methylglyoxal (MGO), diacetyl (DA), and pentane‑2,3‑dione (PD) in blood plasma using 4‑(2,3‑dimethyl‑6‑quinoxalinyl)‑1,2‑benzenediamine (DQB) as a derivatizing reagent. The derivatizing reaction could be carried out quickly under mild conditions and the HPLC determination is simple, sensitive, and easy to operate. The recoveries of the α-DCs are between 85.26% and 110.20% (intra-day) and 87.25% and 103.18% (inter-day); the RSDs are between 1.28% and 5.69% (intra-day) and 2.26% and 6.34% (inter-day). We found the plasma levels of 3-DG, GO, and MGO in the diabetic patients are all significantly higher than those in healthy subjects. The results also show that the contents of GO and MGO in diabetic nephropathy (DN) patients are both significantly higher than those in simple T2DM patients. Moreover, it is found for the first time that the plasma level of GO might be a potential predictor of DN. The developed method would be useful for the measurements of the plasma α-DCs and the data acquired could be informative in the diagnosis of DM complications.
Collapse
Affiliation(s)
- Xin-Jie Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Sheng-Bo Ma
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Zhuo-Feng Liu
- Friendship Hospital of Shaanxi Province, 227 West Youyi Road, Xi'an, Shaanxi 710000, China
| | - Heng Li
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Wen-Yun Gao
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China.
| |
Collapse
|
18
|
El-Maghrabey MH, Nakatani T, Kishikawa N, Kuroda N. Aromatic aldehydes as selective fluorogenic derivatizing agents for α‐dicarbonyl compounds. Application to HPLC analysis of some advanced glycation end products and oxidative stress biomarkers in human serum. J Pharm Biomed Anal 2018; 158:38-46. [DOI: 10.1016/j.jpba.2018.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 10/16/2022]
|
19
|
Dhananjayan K, Gunawardena D, Hearn N, Sonntag T, Moran C, Gyengesi E, Srikanth V, Münch G. Activation of Macrophages and Microglia by Interferon-γ and Lipopolysaccharide Increases Methylglyoxal Production: A New Mechanism in the Development of Vascular Complications and Cognitive Decline in Type 2 Diabetes Mellitus? J Alzheimers Dis 2018; 59:467-479. [PMID: 28582854 DOI: 10.3233/jad-161152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Methylglyoxal (MGO), a dicarbonyl compound derived from glucose, is elevated in diabetes mellitus and contributes to vascular complications by crosslinking collagen and increasing arterial stiffness. It is known that MGO contributes to inflammation as it forms advanced glycation end products (AGEs), which activate macrophages via the receptor RAGE. The aim of study was to investigate whether inflammatory activation can increase MGO levels, thereby completing a vicious cycle. In order to validate this, macrophage (RAW264.7, J774A.1) and microglial (N11) cells were stimulated with IFN-γ and LPS (5 + 5 and 10 + 10 IFN-γ U/ml or μg/ml LPS), and extracellular MGO concentration was determined after derivatization with 5,6-Diamino-2,4-dihydroxypyrimidine sulfate by HPLC. MGO levels in activated macrophage cells (RAW264.7) peaked at 48 h, increasing 2.86-fold (3.14±0.4 μM) at 5 U/ml IFN-γ+5 μg/ml LPS, and 4.74-fold (5.46±0.30 μM) at 10 U/ml IFN-γ+10 μg/ml LPS compared to the non-activated controls (1.15±0.02 μM). The other two cell lines, J774A.1 macrophages and N11 microglia, showed a similar response. We suggest that inflammation increases MGO production, possibly exacerbating arterial stiffness, cardiovascular complications, and diabetes-related cognitive decline.
Collapse
Affiliation(s)
- Karthik Dhananjayan
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Dhanushka Gunawardena
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Nerissa Hearn
- Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia
| | - Tanja Sonntag
- Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia
| | - Chris Moran
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, VIC, Australia
| | - Erika Gyengesi
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Velandai Srikanth
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, VIC, Australia
| | - Gerald Münch
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia.,Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia.,National Institute of Complementary Medicine, Western Sydney University, Penrith, NSW, Australia
| |
Collapse
|
20
|
Glyoxal and methylglyoxal as urinary markers of diabetes. Determination using a dispersive liquid–liquid microextraction procedure combined with gas chromatography–mass spectrometry. J Chromatogr A 2017. [DOI: 10.1016/j.chroma.2017.06.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
21
|
Wang WC, Chou CK, Chuang MC, Li YC, Lee JA. Elevated levels of liver methylglyoxal and d
-lactate in early-stage hepatitis in rats. Biomed Chromatogr 2017; 32. [DOI: 10.1002/bmc.4039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 05/22/2017] [Accepted: 06/20/2017] [Indexed: 01/29/2023]
Affiliation(s)
- Wen-Chuang Wang
- Department of Pathology; Chia-Yi Christian Hospital; Chia-Yi City Taiwan
| | - Chu-Kuang Chou
- Division of Gastroenterology and Hepatology, Department of Internal Medicine; Chia-Yi Christian Hospital; Chia-Yi City Taiwan
- Department of Internal Medicine National Taiwan University Hospital; Taipei City Taiwan
| | - Ming-Cheng Chuang
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Yi-Chieh Li
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Jen-Ai Lee
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| |
Collapse
|
22
|
Wang JY, Wang XJ, Hui X, Hua SH, Li H, Gao WY. Determination of Diacetyl in Beer by a Precolumn Derivatization-HPLC-UV Method Using 4-(2,3-Dimethyl-6-quinoxalinyl)-1,2-benzenediamine as a Derivatizing Reagent. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2635-2641. [PMID: 28285533 DOI: 10.1021/acs.jafc.7b00990] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Diacetyl is an important flavoring compound in many foods, especially in beer. In the present study, we developed and validated a new precolumn derivatization HPLC-UV method for the determination of diacetyl using 4-(2,3-dimethyl-6-quinoxalinyl)-1,2-benzenediamine as a novel derivatizing reagent. After derivatization with the reagent at a pH value 4.0 at ambient temperature for 10 min, diacetyl was analyzed on an ODS column and detected at 254 nm. The results show that the correlation coefficient of the method is 0.9991 in the range of 0.10 to 100.0 μM diacetyl, and the limit of detection is 0.02 μM. The method was further evaluated in the analysis of beer samples with the recoveries ranging from 94.4 to 102.6% and RSDs from 1.36 to 3.33%. The concentrations of diacetyl in 8 beer samples were determined in the range of 0.19 to 0.42 μM. The method established in this study may be well suitable for the determination of diacetyl in beer.
Collapse
Affiliation(s)
- Ji-Yu Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Xin-Jie Wang
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Xian Hui
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Shui-Hong Hua
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Heng Li
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| | - Wen-Yun Gao
- National Engineering Research Center for Miniaturized Detection Systems and College of Life Sciences, Northwest University , 229 North Taibai Road, Xi'an, Shaanxi 710069, China
| |
Collapse
|
23
|
Glyoxal and methylglyoxal determination in urine by surfactant-assisted dispersive liquid–liquid microextraction and LC. Bioanalysis 2017; 9:369-379. [DOI: 10.4155/bio-2016-0217] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Aim: Two important markers of oxidative stress, glyoxal and methylglyoxal, are preconcentrated from human urine by surfactant-assisted dispersive liquid–liquid microextraction and separated by LC-fluorescence. Methods/results: Derivatization was carried out overnight with 0.8 mM 2,3-diaminonaphthalene at 4°C. For surfactant-assisted dispersive liquid–liquid microextraction, 500 µl buffer solution (pH 10.5) and 25 µl 0.03 M Triton X-114 were added to 2.5 ml of the sample and the mixture was made up to 10 ml before the rapid injection of 75 µl 1-undecanol (extractant solvent) and 0.5 ml ethanol (dispersant solvent). Conclusion: The method can be applied to analyze glyoxal and methylglyoxal in urine with LOD of 13 and 16 ng/l, respectively, and recoveries in the 88–103% range.
Collapse
|
24
|
Huang YS, Li YC, Tsai PY, Lin CE, Chen CM, Chen SM, Lee JA. Accumulation of methylglyoxal and d
-lactate in Pb-induced nephrotoxicity in rats. Biomed Chromatogr 2016; 31. [DOI: 10.1002/bmc.3869] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/23/2016] [Accepted: 10/12/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Yu-Shen Huang
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Yi-Chieh Li
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Pei-Yun Tsai
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Chia-En Lin
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Chien-Ming Chen
- Department of Electro-Optical Engineering; National Taipei University of Technology; Taipei Taiwan
| | - Shih-Ming Chen
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| | - Jen-Ai Lee
- School of Pharmacy, College of Pharmacy; Taipei Medical University; Taipei Taiwan
| |
Collapse
|
25
|
Yeh WJ, Yang HY, Pai MH, Wu CH, Chen JR. Long-term administration of advanced glycation end-product stimulates the activation of NLRP3 inflammasome and sparking the development of renal injury. J Nutr Biochem 2016; 39:68-76. [PMID: 27816762 DOI: 10.1016/j.jnutbio.2016.09.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 06/20/2016] [Accepted: 09/02/2016] [Indexed: 01/13/2023]
Abstract
The accumulation of advanced glycation end-products (AGEs) and the enhanced interaction of AGE with their cellular receptor (RAGE) have been implicated in the progression of chronic kidney disease. The purpose of this study was to examine whether the AGE/RAGE-induced nephrotoxic effects are associated with inflammasome activation and endothelial dysfunction. Chronic renal injury was examined in BALB/c mice by the long-term administration of carbonyl-AGE for 16 weeks. Endothelial dysfunction was detected by measuring the number of circulating endothelial progenitor cells (EPCs) and the levels of nitric oxide synthase (eNOS) and nitric oxide (NO) in kidneys. Results showed that administration of methylglyoxal-bovine serum albumin (MG-BSA) AGE accelerated renal MG, carboxyethyl lysine, carboxymethyl lysine and malondialdehyde formation and, in parallel, the levels of serum creatinine and blood urea nitrogen (BUN) were significantly increased. Expression of RAGE and NLRP3 inflammasome-related proteins (TXNIP, NLRP3, procaspase-1 and caspase-1) and IL (interleukin)-1β secretion were upregulated, whereas the levels of EPCs, eNOS and NO were lower in MG-BSA-treated mice. This induction by MG-BSA was significantly inhibited by RAGE antagonist. Our results firstly reveal a possible mechanism of AGE-mediated renal dysfunction upon NLRP3 inflammasome activation. Therapeutic blockade of RAGE may ameliorate renal and endothelial functions in subjects under high AGE burden.
Collapse
Affiliation(s)
- Wan-Ju Yeh
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
| | - Hsin-Yi Yang
- Department of Nutrition, I-Shou University, Kaohsiung, Taiwan
| | - Man-Hui Pai
- Department of Anatomy and Cell Biology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chi-Hao Wu
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
| | - Jiun-Rong Chen
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan; Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan.
| |
Collapse
|
26
|
Hurtado-Sánchez MDC, Espinosa-Mansilla A, Durán-Merás I. Influence of the presence of natural monosaccharides in the quantification of α-dicarbonyl compounds in high content sugar samples. A comparative study by ultra-high performance liquid chromatography–single quadrupole mass spectrometry using different derivatization reactions. J Chromatogr A 2015; 1422:117-127. [DOI: 10.1016/j.chroma.2015.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/16/2015] [Accepted: 10/02/2015] [Indexed: 11/16/2022]
|
27
|
Huang TC, Chen SM, Li YC, Lee JA. Increased renal semicarbazide-sensitive amine oxidase activity and methylglyoxal levels in aristolochic acid-induced nephrotoxicity. Life Sci 2014; 114:4-11. [DOI: 10.1016/j.lfs.2014.07.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 07/03/2014] [Accepted: 07/25/2014] [Indexed: 02/08/2023]
|
28
|
Haucke E, Navarrete Santos A, Simm A, Henning C, Glomb MA, Gürke J, Schindler M, Fischer B, Navarrete Santos A. Accumulation of advanced glycation end products in the rabbit blastocyst under maternal diabetes. Reproduction 2014; 148:169-78. [DOI: 10.1530/rep-14-0149] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Diabetes mellitus (DM) during pregnancy is one of the leading causes of perinatal morbidity and birth defects. The mechanism by which maternal hyperglycemia, the major teratogenic factor, induces embryonic malformations remains unclear. Advanced glycation end products (AGEs) are known to accumulate during the course of DM and contribute to the development of diabetic complications. Employing a diabetic rabbit model, we investigated the influence of maternal hyperglycemia during the preimplantation period on AGE formation (pentosidine, argpyrimidine, and Nε-carboxymethyllysine (CML)) in the reproductive tract and the embryo itself. As a consequence of type 1 DM, the AGE levels in blood plasma increased up to 50%, correlating closely with an AGE accumulation in the endometrium of diabetic females. Embryos from diabetic mothers had increased protein-bound CML levels and showed enhanced fluorescent signals for AGE-specific fluorescence in the blastocyst cavity fluid (BCF). The quantification of CML by HPLC–mass spectrometry (MS/MS) showed a higher amount of soluble CML in the BCF of blastocysts from diabetic rabbits (0.26±0.05 μmol/l) compared with controls (0.18±0.02 μmol/l). The high amount of AGEs in blastocysts from diabetic mothers correlates positively with an increased AGER (receptor for AGE (RAGE)) mRNA expression. Our study gives alarming insights into the consequences of poorly controlled maternal diabetes for AGE formation in the embryo. Maternal hyperglycemia during the preimplantation period is correlated with an increase in AGE formation in the uterine environment and the embryo itself. This may influence the development of the embryo through increased AGE-mediated cellular stress by RAGEs.
Collapse
|
29
|
Determination of glyoxal and methylglyoxal in Thai fish sauce and their changes during storage test. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2014. [DOI: 10.1007/s11694-014-9197-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
30
|
El-Maghrabey MH, Kishikawa N, Ohyama K, Kuroda N. Analytical method for lipoperoxidation relevant reactive aldehydes in human sera by high-performance liquid chromatography-fluorescence detection. Anal Biochem 2014; 464:36-42. [PMID: 25017470 DOI: 10.1016/j.ab.2014.07.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/02/2014] [Accepted: 07/03/2014] [Indexed: 10/25/2022]
Abstract
A validated, simple and sensitive HPLC method was developed for the simultaneous determination of lipoperoxidation relevant reactive aldehydes: glyoxal (GO), acrolein (ACR), malondialdehyde (MDA), and 4-hydroxy-2-nonenal (HNE) in human serum. The studied aldehydes were reacted with 2,2'-furil to form fluorescent difurylimidazole derivatives that were separated on a C18 column using gradient elution and fluorescence detection at excitation and emission wavelengths of 250 and 355nm, respectively. The method showed good linearity over the concentration ranges of 0.100-5.00, 0.200-10.0, 0.200-40.0, and 0.400-10.0nmol/mL for GO, ACR, HNE, and MDA, respectively, with detection limits ranging from 0.030 to 0.11nmol/mL. The percentage RSD of intraday and interday precision did not exceed 5.0 and 6.2%, respectively, and the accuracy (%found) ranged from 95.5 to 103%. The proposed method was applied for monitoring the four aldehydes in sera of healthy, diabetic, and rheumatic human subjects with simple pretreatment steps and without interference from endogenous components. By virtue of its high sensitivity and accuracy, our method enabled detection of differences between analytes concentrations in sera of human subjects under different clinical conditions.
Collapse
Affiliation(s)
- Mahmoud H El-Maghrabey
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan; Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Naoya Kishikawa
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Kaname Ohyama
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Naotaka Kuroda
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
| |
Collapse
|
31
|
Chromatographic determination of low-molecular mass unsaturated aliphatic aldehydes with peroxyoxalate chemiluminescence detection after fluorescence labeling with 4-(N,N-dimethylaminosulfonyl)-7-hydrazino-2,1,3-benzoxadiazole. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 953-954:147-52. [PMID: 24614624 DOI: 10.1016/j.jchromb.2014.02.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 01/26/2014] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
Abstract
A highly sensitive, selective and reproducible chromatographic method is described for determination of low-molecular mass unsaturated aliphatic aldehydes in human serum. The method combines fluorescent labeling using 4-(N,N-Dimethylaminosulfonyl)-7-hydrazino-2,1,3-benzoxadiazole with peroxyoxalate chemiluminescence. The derivatives were separated on a reversed-phase column C8 isocratically using a mixture of acetonitrile and 90mM imidazole-HNO3 buffer (pH 6.4, 1:1, % v/v). The calibration ranges were: 20-420nM for methylglyoxal, 16-320nM for acrolein, 15-360nM for crotonaldehyde and 20-320nM for trans-2-hexenal. The detection limits were ranged from 4.4 to 6.5nM (88-130fmol/injection), the recovery results were within the range of 87.4-103.8% and the intra and inter-day precision results were lower than 5.5%. The proposed validated method has been successfully applied to healthy, diabetic and rheumatic arthritis patients' sera with simple pretreatment method. In conclusion, this new method is suitable for routine analysis of large numbers of clinical samples for assessment of the oxidative stress state in patients.
Collapse
|
32
|
Hurtado-Sánchez MDC, Espinosa-Mansilla A, Rodríguez-Cáceres MI, Durán-Merás I. Evaluation of liquid chromatographic behavior of lumazinic derivatives, from α-dicarbonyl compounds, in different C18 columns: application to wine samples using a fused-core column and fluorescence detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:97-106. [PMID: 24325310 DOI: 10.1021/jf404180t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Several C18 columns, packed with totally porous particles of different sizes and shell thicknesses, have been compared for simultaneous determination of α-dicarbonyl compounds, previous derivatization to lumazinic derivatives. Chromatographic conditions for the separation have been optimized for each column, and chromatographic parameters have been calculated and exhaustively compared. A core-shell C18 column provided the best results, and a HPLC method with fluorimetric detection has been proposed. The developed method has been validated in terms of linearity, precision, and sensitivity. Detection and quantification limits obtained were comprised between 0.02 and 0.30 and 0.07 and 1.0 ng mL(-1), respectively, while RSD values obtained were lower than 6% and 5% in intraday and interday repeatability studies, respectively. The method has been applied to analysis of the α-dicarbonyl compounds in different types of wines. The higher levels of the total α-dicarbonyl compounds were found in sweet wines and the lower levels in white wines.
Collapse
|
33
|
Ojeda AG, Wrobel K, Escobosa ARC, Garay-Sevilla ME, Wrobel K. High-performance liquid chromatography determination of glyoxal, methylglyoxal, and diacetyl in urine using 4-methoxy-o-phenylenediamine as derivatizing reagent. Anal Biochem 2013; 449:52-8. [PMID: 24361711 DOI: 10.1016/j.ab.2013.12.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 11/20/2013] [Accepted: 12/11/2013] [Indexed: 12/17/2022]
Abstract
Bioanalytical relevance of glyoxal (Go) and methylglyoxal (MGo) arises from their role as biomarkers of glycation processes and oxidative stress. The third compound of interest in this work is diacetyl (DMGo), a component of different food products and alcoholic beverages and one of the small α-ketoaldehydes previously reported in urine. The original idea for the determination of the above compounds by reversed phase high-performance liquid chromatography (HPLC) with fluorimetric detection was to use 4-methoxy-o-phenylenediamine (4MPD) as a derivatizing reagent and diethylglyoxal (DEGo) as internal standard. Acetonitrile was added to urine for matrix precipitation, and derivatization reaction was carried out in the diluted supernatant at neutral pH (40 °C, 4 h); after acidification, salt-induced phase separation enabled recovery of the obtained quinoxalines in the acetonitrile layer. The separation was achieved within 12 min using a C18 Kinetex column and gradient elution. The calibration detection limits for Go, MGo, and DMGo were 0.46, 0.39, and 0.28 μg/L, respectively. Within-day precision for real-world samples did not exceed 6%. Several urine samples from healthy volunteers, diabetic subjects, and juvenile swimmers were analyzed. The sensitivity of the procedure proposed here enabled detection of differences between analyte concentrations in urine from patients at different clinical or exposure-related conditions.
Collapse
Affiliation(s)
| | - Katarzyna Wrobel
- Department of Chemistry, University of Guanajuato, 36000 Guanajuato, Mexico
| | | | | | - Kazimierz Wrobel
- Department of Chemistry, University of Guanajuato, 36000 Guanajuato, Mexico.
| |
Collapse
|
34
|
Li YC, Shih YM, Lee JA. Gentamicin caused renal injury deeply related to methylglyoxal and Nɛ-(carboxyethyl)lysine (CEL). Toxicol Lett 2013; 219:85-92. [DOI: 10.1016/j.toxlet.2013.01.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 01/18/2013] [Accepted: 01/28/2013] [Indexed: 01/18/2023]
|
35
|
Chatterjee S, Wen J, Chen A. Electrochemical determination of methylglyoxal as a biomarker in humanplasma. Biosens Bioelectron 2013. [DOI: 10.1016/j.bios.2012.10.091] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
36
|
del Carmen Hurtado-Sánchez M, Espinosa-Mansilla A, Rodríguez-Cáceres MI, Martín-Tornero E, Durán-Merás I. Development of a method for the determination of advanced glycation end products precursors by liquid chromatography and its application in human urine samples. J Sep Sci 2012; 35:2575-84. [DOI: 10.1002/jssc.201200255] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 05/16/2012] [Accepted: 05/23/2012] [Indexed: 01/13/2023]
|
37
|
Li YC, Tsai SH, Chen SM, Chang YM, Huang TC, Huang YP, Chang CT, Lee JA. Aristolochic acid-induced accumulation of methylglyoxal and Nε-(carboxymethyl)lysine: An important and novel pathway in the pathogenic mechanism for aristolochic acid nephropathy. Biochem Biophys Res Commun 2012; 423:832-7. [DOI: 10.1016/j.bbrc.2012.06.049] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 06/09/2012] [Indexed: 10/28/2022]
|
38
|
Wild R, Ooi L, Srikanth V, Münch G. A quick, convenient and economical method for the reliable determination of methylglyoxal in millimolar concentrations: the N-acetyl-L-cysteine assay. Anal Bioanal Chem 2012; 403:2577-81. [PMID: 22580513 DOI: 10.1007/s00216-012-6086-4] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 04/20/2012] [Accepted: 04/29/2012] [Indexed: 10/28/2022]
Abstract
The determination of methylglyoxal (MG) concentrations in vivo is gaining increasing importance as high levels of MG are linked to various health impairments including complications of diabetes. In order to standardize the measurements of MG in body fluids, it is necessary to precisely determine the concentration of MG stock solutions used as analytical standards. The "gold standard" method for the determination of MG concentration in the millimolar range is an enzyme-catalyzed endpoint assay based on the glyoxalase I catalyzed formation of S-lactoylglutathione. However, as this assay used purified glyoxalase I enzyme, it is quite expensive. Another method uses a derivation reaction with 2,4-dinitrophenylhydrazine, but this substance is explosive and needs special handling and storage. In addition, precipitation of the product methylglyoxal-bis-2,4-dinitrophenylhydrozone during the reaction limits the reliability of this method. In this study, we have evaluated a new method of MG determination based on the previously published fast reaction between MG and N-acetyl-L-cysteine at room temperature which yields an easily detectable condensation product, N-α-acetyl-S-(1-hydroxy-2-oxo-prop-1-yl)cysteine. When comparing these three different assays for the measurement of MG concentrations, we find that the N-acetyl-L-cysteine assay is the most favorable, providing an economical and robust assay without the need for the use of hazardous or expensive reagents.
Collapse
Affiliation(s)
- Rebekka Wild
- Department of Pharmacology, School of Medicine, University of Western Sydney, Penrith South DC, Australia
| | | | | | | |
Collapse
|
39
|
Zhang J, Zhang H, Li M, Zhang D, Chu Q, Ye J. A novel capillary electrophoretic method for determining methylglyoxal and glyoxal in urine and water samples. J Chromatogr A 2010; 1217:5124-9. [DOI: 10.1016/j.chroma.2010.05.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 05/17/2010] [Accepted: 05/21/2010] [Indexed: 12/11/2022]
|