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Demeuse JJ, Calaprice C, Huyghebaert LC, Rechchad M, Peeters S, Cavalier E, Le Goff C. Development and Validation of an Ultrasensitive LC-MS/MS Method for the Quantification of Melatonin in Human Saliva. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023. [PMID: 37130062 DOI: 10.1021/jasms.3c00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A growing body of literature describes the potential effects of circadian disruption on human health. Indeed, psychiatric diseases, metabolic syndrome, and cancers may be linked to disturbance of the circadian rhythm. Currently, the best practice to assess circadian rhythm is the measurement of melatonin levels. Our goal was thus to develop and validate a highly sensitive LC-MS/MS method to follow salivary melatonin levels throughout the day and night. Our method reached a lower limit of the measuring interval (LLMI) of 0.8 pg/mL. To our knowledge, it is the most sensitive method allowing quantitation of melatonin in saliva. Saliva, obtained from passive drooling or salivette, was extracted by an efficient and quick liquid-liquid extraction with no further cleanup needed. The method was validated according to the European Medicines Agency (EMA) guidelines and provided excellent results regarding accuracy, precision, linearity, selectivity, and specificity. Comparison between radioimmunoassay and our method was performed and showed differences at low levels, most likely due to cross-reactivity with other indols. To assess daytime melatonin levels in humans, salivary melatonin levels of ten volunteers were monitored throughout the day and showed lower daytime levels than reported in previous studies.
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Affiliation(s)
- Justine J Demeuse
- Laboratory of Clinical Chemistry, CIRM, University of Liège, 4000 Liège, Belgium
| | - Chiara Calaprice
- Department of Clinical Chemistry, CHU Liège, 4000 Liège, Belgium
| | | | - Marwa Rechchad
- Department of Clinical Chemistry, CHU Liège, 4000 Liège, Belgium
| | | | - Etienne Cavalier
- Laboratory of Clinical Chemistry, CIRM, University of Liège, 4000 Liège, Belgium
- Department of Clinical Chemistry, CHU Liège, 4000 Liège, Belgium
| | - Caroline Le Goff
- Laboratory of Clinical Chemistry, CIRM, University of Liège, 4000 Liège, Belgium
- Department of Clinical Chemistry, CHU Liège, 4000 Liège, Belgium
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2
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-Aryl-2(trifluoromethyl)benzo[][1,8]naphthyridin-4(1)-one as Convenient Platform to Design High Photostable and Long-Lived Dyad Fluorophore with Potential Application in Live-Cell Imaging. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Rzepka-Migut B, Paprocka J. Melatonin-Measurement Methods and the Factors Modifying the Results. A Systematic Review of the Literature. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E1916. [PMID: 32183489 PMCID: PMC7142625 DOI: 10.3390/ijerph17061916] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/04/2020] [Accepted: 03/06/2020] [Indexed: 01/11/2023]
Abstract
Melatonin plays an important role in regulating the sleep-wake cycle and adaptation to environmental changes. Concentration measurements in bioliquids such as serum/plasma, saliva and urine are widely used to assess peripheral rhythm. The aim of the study was to compare methods and conditions of determinations carried out with the identification of factors potentially affecting the measurements obtained. We have identified a group of modifiable and unmodifiable factors that facilitate data interpretation. Knowledge of modifiers allows you to carefully plan the test protocol and then compare the results. There is no one universal sampling standard, because the choice of method and biofluid depends on the purpose of the study and the research group.
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Affiliation(s)
- Beata Rzepka-Migut
- Department of Pediatric Neurology and Pediatrics, St. Queen Jadwiga’s Regional Clinical Hospital No 2 Rzeszów, 35-301 Rzeszów, Poland;
| | - Justyna Paprocka
- Department of Pediatric Neurology, Faculty of Medical Sciences, Medical University of Silesia, 40-752 Katowice, Poland
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Gümrükçüoğlu A, Topaloğlu Y, Mermer A, Demirbaş N, Demirbaş A, Ocak M, Ocak Ü. 4-Quinolone-Carboxamide and Carbothioamide Compounds as Fluorescent Sensors. New Fluorimetric Methods for Cu 2+ and Fe 3+ Determination in Tap Water and Soil. J Fluoresc 2019; 29:921-931. [PMID: 31273533 DOI: 10.1007/s10895-019-02404-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 06/10/2019] [Indexed: 11/29/2022]
Abstract
Ion sensor properties of the carboxamide and carbothioamide compounds carrying 4-quinolone group were investigated by means of emission spectrometry in methanol-water (1:1). The compounds were selectively complexed with Cu2+, Pd2+, and Fe3+ among many metal ions. The complex stoichiometry and the stability constant were determined by fluorimetric measurements. The carboxamide compound having phenyl group (QPO) showed sensitivity for Fe3+ ion with a linear range between 0.1 and 0.7 mg/L. The new method was applied in the determination of iron in the spiked tap water samples and the sandy-soil reference material. A modified standard addition method was used to remove the matrix effect. Limit of detection was 0.03 mg/L for the Fe3+ determination method. The carboxamide compound with benzyl group (QBO) showed sensitivity for Cu2+ ion with linear range 0-0.4 mg/L. There was no matrix effect for copper determination in the spiked tap water samples. The detection limit of the method for Cu2+ ion was 0.05 mg/L. The quantification limits of the methods were low enough to determine iron and copper amount in drinking water samples according to EPA.
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Affiliation(s)
- Abidin Gümrükçüoğlu
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Yeşim Topaloğlu
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Arif Mermer
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Neslihan Demirbaş
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Ahmet Demirbaş
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Miraç Ocak
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
| | - Ümmühan Ocak
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey.
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Chen L, Xiao Q, Zhang X, Yang J. Establishment and comparison of three novel methods for the determination of the photodynamic therapy agent 2-[1-hexyloxyethyl]-2-devinyl pyropheophorbide-a (HPPH) in human serum. J Pharm Biomed Anal 2016; 121:13-21. [DOI: 10.1016/j.jpba.2015.12.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 12/28/2015] [Accepted: 12/29/2015] [Indexed: 11/16/2022]
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6
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Oyama T, Negishi E, Onigahara H, Kusano N, Miyoshi Y, Mita M, Nakazono M, Ohtsuki S, Ojida A, Lindner W, Hamase K. Design and synthesis of a novel pre-column derivatization reagent with a 6-methoxy-4-quinolone moiety for fluorescence and tandem mass spectrometric detection and its application to chiral amino acid analysis. J Pharm Biomed Anal 2015; 116:71-9. [DOI: 10.1016/j.jpba.2015.05.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/16/2015] [Accepted: 05/19/2015] [Indexed: 01/08/2023]
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7
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Trávníček Z, Buchtík R, Nemec I. Novel Schiff bases based on the quinolinone skeleton: syntheses, X-ray structures and fluorescent properties. Molecules 2014; 19:13509-25. [PMID: 25255753 PMCID: PMC6270981 DOI: 10.3390/molecules190913509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/12/2014] [Accepted: 08/25/2014] [Indexed: 11/16/2022] Open
Abstract
A series of a new type of Schiff bases 1-7, derived from 2-phenyl-3-amino-4(1H)-quinolinone and R-salicyladehyde derivatives wherein R = 3-hydroxy (1), 3,4-dihydroxy (2), 3-methoxy (3), 3-carboxy (4), 3-allyl (5), 5-chloro (6), and 5-nitro (7), was synthesized and structurally characterized. Each of the molecules 1, 3 and 7 consists of three planar moieties (i.e., a quinolinone and two phenyl rings), which are mutually oriented differently depending on the appropriate substituent R and the extent of non-covalent contacts stabilizing the crystal structures. The compounds were studied for their fluorescence properties, where compound 6 yielded the strongest intensity both in the solid phase and in 100 μM ethanol solution with a quantum yield of φ = 3.6% as compared to quinine sulfate used as a standard. The in vitro cytotoxicity of these compounds was tested against the human osteosarcoma (HOS) and breast adenocarcinoma (MCF7) cell lines, revealing no activity up to the concentration of 50 µM.
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Affiliation(s)
- Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17 listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Roman Buchtík
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17 listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Ivan Nemec
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17 listopadu 12, CZ-77146 Olomouc, Czech Republic.
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Hirano J, Hamase K, Miyata H, Zaitsu K. 6,7-Difluoro-1,4-dihydro-1-methyl-4-oxo-3-quinolinecarboxylic acid, a newly designed fluorescence enhancement-type derivatizing reagent for amino compounds. J Fluoresc 2010; 20:615-24. [PMID: 20108029 DOI: 10.1007/s10895-009-0596-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 12/30/2009] [Indexed: 11/30/2022]
Abstract
A novel fluorescence enhancement-type derivatizing reagent for amino compounds, 6,7-difluoro-1,4-dihydro-1-methyl-4-oxo-3-quinolinecarboxylic acid (FMQC), was developed. FMQC reacts with aliphatic primary amino compounds to afford strong fluorescent derivatives having high photo-and thermo-stabilities. The FMQC derivatives of amino compounds showed 12-159 times higher fluorescence quantum efficiencies than those of FMQC in aqueous and polar organic media. Additionally, the absorption and fluorescence emission wavelength of the derivatives are red-shifted from those of FMQC. These differences in the fluorescence properties between FMQC and the fluorescent derivative enabled the simple and highly sensitive determination of amino compounds without removing any excess unreacted FMQC by using a simple spectrofluorometer as well as HPLC.
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Affiliation(s)
- Junzo Hirano
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Hirano J, Hamase K, Akita T, Zaitsu K. Structural and photophysical properties of novel dual fluorescent compounds, 1-aryl-substituted 6-methoxy-4-quinolones. LUMINESCENCE 2008; 23:350-5. [PMID: 18500699 DOI: 10.1002/bio.1044] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Junzo Hirano
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Shi J, Liu L, He J, Meng X, Guo Q. Facile Derivatization of Pyridyloxazole-type Fluorophore via Click Chemistry. CHEM LETT 2007. [DOI: 10.1246/cl.2007.1142] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hirano J, Hamase K, Zaitsu K. Evaluation of a simple and novel fluorescent anion sensor, 4-quinolone, and modification of the emission color by substitutions based on molecular orbital calculations. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.08.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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