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Mhatre S, Rai A, Ali H, Patil A, Singh N, Verma R, Auden J, Chandler C, Dash A, Opere C, Singh S. Comparison of colorimetric, spectroscopic and electrochemical techniques for quantification of hydrogen sulfide. Biotechniques 2024; 76:71-80. [PMID: 38059376 PMCID: PMC10910492 DOI: 10.2144/btn-2023-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/16/2023] [Indexed: 12/08/2023] Open
Abstract
Background: Hydrogen sulfide (H2S), an endogenous gasotransmitter, has potential applications in several conditions. However, its quantification in simulated physiological solutions is a major challenge due to its gaseous nature and other physicochemical properties. Aim: This study was designed to compare four commonly used H2S detection and quantification methods in aqueous solutions. Methods: The four techniques compared were one colorimetric, one chromatographic and two electrochemical methods. Results: Colorimetric and chromatographic methods quantified H2S in millimolar and micromole ranges, respectively. The electrochemical methods quantified H2S in the nanomole and picomole ranges and were less time-consuming. Conclusion: The H2S quantification method should be selected based on the specific requirements of a research project in terms of sensitivity, response time and cost-effectiveness.
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Affiliation(s)
- Susmit Mhatre
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
| | - Anjali Rai
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
| | - Hatim Ali
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
- Hikma Pharmaceuticals, Bedford, OH 44146, USA
| | - Akash Patil
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
- Large Molecule Product Development, Johnson & Johnson Greater Philadelphia, Philadelphia, PA 19355, USA
| | - Neetu Singh
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
- Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA
| | - Richa Verma
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
- Cardiovascular & Metabolic Research Unit, York University, Toronto, ON, M3J 1P3, Canada
- Department of Biomolecular Sciences, Laurentian University, Sudbury, ON, P3E 2C6, Canada
| | - John Auden
- Department of Chemistry & Biochemistry, College of Arts & Sciences, Creighton University, Omaha, NE 68178, USA
| | - Cole Chandler
- Department of Biology, College of Arts & Sciences, Creighton University, Omaha, NE 68178, USA
| | - Alekha Dash
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
| | - Catherine Opere
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
| | - Somnath Singh
- Department of Pharmacy Sciences, School of Pharmacy & Health Professions, Creighton University, Omaha, NE 68178, USA
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Zhao Y, Wang T, Abdulkhaleq AMA, Zuo Z, Peng Y, Zhou X. A Novel Fluorescence Probe Based on Azamonardine for Detecting and Imaging Cysteine in Cells and Zebrafish with High Selectivity and Sensitivity. Molecules 2023; 28:6246. [PMID: 37687075 PMCID: PMC10488781 DOI: 10.3390/molecules28176246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
A novel fluorescent probe based on azamonardine (Aza) fluorophore was designed and synthesized for the highly selective detection of cysteine (Cys) in vivo and in vitro. After reacting with acryloyl chloride, the fluorescence of Aza is effectively quenched, resulting in the formation of the Aza-acryl probe. Upon the addition of Cys, the ester bond of Aza-acryl is cleaved, releasing a new compound (Compound 1) with strong fluorescence, thereby achieving fluorescence turn-on detection of Cys. The structure of Aza-acryl was characterized using X-ray crystallography and NMR spectroscopy. Additionally, density functional theory was employed to elucidate the quenching mechanism of the acyl group on the Aza. Aza-acryl exhibits high selectivity towards Cys and distinguishes it from other biothiols such as homocysteine (Hcy) and glutathione (GSH). The mechanism of Aza-acryl for detecting Cys was investigated through HPLC, NMR spectroscopy, high-resolution mass spectrometry, and reaction kinetics experiments. Aza-acryl demonstrates excellent imaging capabilities for Cys in cells and zebrafish, providing a reliable and selectable tool for the detection and imaging of Cys in biological systems.
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Affiliation(s)
- Yixu Zhao
- Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou 121001, China;
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou 121001, China
| | - Ting Wang
- Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming 650500, China;
- College of Pharmacy, Jinzhou Medical University, Jinzhou 121001, China;
| | | | - Zhongfu Zuo
- Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou 121001, China;
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou 121001, China
| | - Yongjin Peng
- College of Basic Science, Jinzhou Medical University, Jinzhou 121001, China
| | - Xibin Zhou
- College of Pharmacy, Jinzhou Medical University, Jinzhou 121001, China;
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Świerczyńska M, Słowiński D, Michalski R, Romański J, Podsiadły R. A New and Fast-Response Fluorescent Probe for Monitoring Hypochlorous Acid Derived from Myeloperoxidase. Molecules 2023; 28:6055. [PMID: 37630307 PMCID: PMC10459737 DOI: 10.3390/molecules28166055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Hypochlorous acid (HOCl) has been implicated in numerous pathologies associated with an inflammatory component, but its selective and sensitive detection in biological settings remains a challenge. In this report, imaging of HOCl was realized with a thiomorpholine-based probe as derivative of nitrobenzothiadiazole (NBD-S-TM). The fluorescence is based on photoinduced electron transfer by using nitrobenzothiadiazole core as a donor and thiomorpholine substituent as an acceptor. NBD-S-TM showed high sensitivity and a fast response to HOCl k = (2.6 ± 0.2) × 107 M-1s-1 with a 1:1 stoichiometry. The detection limit for HOCl was determined to be 60 nM. Furthermore, the desirable features of NBD-S-TM for the detection of HOCl in aqueous solutions, such as its reliability at physiological pH, rapid fluorescence response, and biocompatibility, enabled its application in the detection of HOCl in myeloperoxidase enzymatic system. Moreover, NBD-S-TM exhibited excellent selectivity and sensitivity for HOCl over other biologically relevant species, such as hydrogen peroxide and peroxynitrite. The fluorescent S-oxidized product (NBD-S-TSO) is only formed in the presence of HOCl. Probing with NBD-S-TM may be helpful to further the development of high throughput screening assays to monitor the activity of myeloperoxidase.
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Affiliation(s)
- Małgorzata Świerczyńska
- Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (M.Ś.); (D.S.)
| | - Daniel Słowiński
- Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (M.Ś.); (D.S.)
| | - Radosław Michalski
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland;
| | - Jarosław Romański
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91-403 Lodz, Poland;
| | - Radosław Podsiadły
- Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (M.Ś.); (D.S.)
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Sun C, Ding D, Wen Z, Zhang C, Kong J. Association between Micronutrients and Hyperhomocysteinemia: A Case-Control Study in Northeast China. Nutrients 2023; 15:1895. [PMID: 37111114 PMCID: PMC10145750 DOI: 10.3390/nu15081895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Hyperhomocysteinemia (HHcy) is an independent risk factor for cardiovascular and cerebrovascular diseases where the plasma homocysteine (Hcy) concentration exceeds 15 µmol/L. HHcy is affected by vitamins B12, B6, and folic acid (fol); however, its relationship with other nutrients is not fully understood. We investigated the nutritional and genetic factors associated with HHcy and the possible dose-response relationships or threshold effects in patients in Northeast China. Genetic polymorphisms and micronutrients were tested with polymerase chain reaction and mass spectrometry, respectively. This trial was registered under trial number ChiCTR1900025136. The HHcy group had significantly more males and higher body mass index (BMI), methylenetetrahydrofolate reductase (MTHFR 677TT) polymorphism proportion, and uric acid, Zn, Fe, P, and vitamin A levels than the control group. After adjusting for age, sex, BMI, vitamin B12, fol, and MTHFR C677T, the lowest Zn quartile reduced the odds ratio of HHcy compared with the highest Zn quartile. The dose-response curves for the association between plasma Zn and HHcy were S-shaped. High plasma Zn concentrations were significantly correlated with high HHcy odds ratios, and the curve leveled off or slightly decreased. Most importantly, HHcy risk decreased with decreasing plasma Zn concentration; the threshold was 83.89 µmol/L. Conclusively, individuals residing in Northeast China, especially those with the MTHFR 677TT polymorphism, must pay attention to their plasma Zn and Hcy levels.
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Affiliation(s)
| | | | | | | | - Juan Kong
- Department of Clinical Nutrition, Shengjing Hospital of China Medical University, Shenyang 110004, China
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