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Yu T, Cui J, Chen S. Electrochemical detection of the neurotransmitter glutamate and the effect of the psychotropic drug riluzole on its oxidation response. Anal Bioanal Chem 2024; 416:1707-1716. [PMID: 38363306 DOI: 10.1007/s00216-024-05175-2] [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: 11/21/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/17/2024]
Abstract
Glutamate is the main excitatory neurotransmitter in the brain and plays a leading role in degenerative diseases, such as motor neuron diseases. Riluzole is a glutamate regulator and a therapeutic drug for motor neuron diseases. In this work, the interaction between glutamate and riluzole was studied using cyclic voltammetry and square-wave voltammetry at a glassy carbon electrode (GCE). It was shown that glutamate underwent a two-electron transfer reaction on the GCE surface, and the electrochemical detection limits of glutamate and riluzole were 483 μmol/L and 11.47 μmol/L, respectively. The results confirm that riluzole can promote the redox reaction of glutamate. This work highlights the significance of electrochemical technology in the sensing detection of the interaction between glutamate and related psychotropic drugs.
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Affiliation(s)
- Tao Yu
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Jingjie Cui
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, China.
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA, 95064, USA
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Zhang H, Cui H, Xia X, Zhang F, Hayat K, Zhang X, Ho CT. Controlled Selective Formation of Amadori Compounds from α/ε Mono- or Di-glycation of Lysine with Xylose. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5358-5371. [PMID: 36944085 DOI: 10.1021/acs.jafc.3c00388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Three Amadori rearrangement products (Xyl-α-Lys-ARP, Xyl-ε-Lys-ARP, and diXyl-α,ε-Lys-ARP) were observed in the xylose-lysine (Xyl-Lys) Maillard reaction model. They were separated and characterized by liquid chromatography with tandem mass spectrometry and NMR. The crucial roles of reaction temperature, pH, molar ratio of Xyl to Lys, and reaction time in the formation of different Xyl-Lys-ARPs were investigated. The proportion of Xyl-α-Lys-ARP among all Xyl-Lys-ARPs was increased to 48.41% (its concentration was 25.31 μmol/mL) after the reaction at pH = 5.5 and a molar ratio of 3:1 (Xyl: Lys) for 9 min, while only Xyl-ε-Lys-ARP was generated at a higher pH (7.5) and a lower molar ratio of 1:5. Moreover, the much higher activation energy (84.08 kJ/mol) of diXyl-α,ε-Lys-ARP than Xyl-α-Lys-ARP (34.19 kJ/mol) and Xyl-ε-Lys-ARP (32.32 kJ/mol) indicated a pronounced promoting effect on diXyl-α,ε-Lys-ARP formation by high temperatures. A complete conversion from Xyl-α-Lys-ARP and Xyl-ε-Lys-ARP to diXyl-α,ε-Lys-ARP was achieved through the reaction time prolongation and Xyl concentration increase at a higher temperature; the concentration of diXyl-α,ε-Lys-ARP was 39.05 μmol/mL at a molar ratio of 5:1 for 40 min. Accordingly, the selective preparation of Xyl-α-Lys-ARP, Xyl-ε-Lys-ARP, and diXyl-α,ε-Lys-ARP could be achieved through adjusting the Xyl-Lys ratio, pH, and reaction time.
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Affiliation(s)
- Han Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Heping Cui
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Xue Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Foxin Zhang
- Anhui QiangWang Flavouring Food Co. Ltd., Fuyang 236500, Anhui, P. R. China
| | - Khizar Hayat
- Department of Kinesiology, Nutrition, and Health, Miami University, Oxford, Ohio 45056, United States
| | - Xiaoming Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
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Jung S, Lee J, Kim WJ. Phenylboronic acid-based core-shell drug delivery platform clasping 1,3-dicarbonyl compounds by a coordinate interaction. Biomater Sci 2021; 9:6851-6864. [PMID: 34494051 DOI: 10.1039/d1bm01169c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Along with the successful commercialization of chemotherapeutics, such as doxorubicin and paclitaxel, numerous natural compounds have been investigated for clinical applications. Recently, curcumin (CUR), a natural compound with various therapeutic effects, has attracted attention for cancer immunotherapy. Most chemotherapeutics, however, have poor water solubility due to their hydrophobicity, which makes them less suited to biomedical applications; CUR is no exception because of its low bioavailability and extremely high hydrophobicity. In the present study, we developed an easy but effective strategy using the interaction between the 1,3-dicarbonyl groups of drugs and phenylboronic acid (PBA) to solubilize hydrophobic drugs. First, we verified the coordinate interaction between 1,3-dicarbonyl and PBA using 3,5-heptanedione as a model compound, followed by CUR as a model drug. A PBA-grafted hydrophilic polymer was used to form a nanoconstruct by coordination bonding with CUR, which then made direct administration of the nanoparticles possible. The nanoconstruct exhibited remarkable loading capability, uniform size, colloidal stability, and pH-responsive drug release, attributed to the formation of core-shell nanoconstructs by coordinate interaction. The therapeutic nanoconstructs successfully showed both chemotherapeutic and anti-PD-L1 anticancer effects in cellular and animal models. Furthermore, we demonstrated the applicability of this technique to other 1,3-dicarbonyl compounds. Overall, our findings suggest a facile, but expandable strategy by applying the coordinate interaction between 1,3-dicarbonyl and PBA, which enables high drug loading and stimuli-responsive drug release.
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Affiliation(s)
- Sungjin Jung
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
| | - Junseok Lee
- Department of Chemistry, POSTECH-Catholic Biomedical Engineering Institute, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.,OmniaMed Co., Ltd, Pohang 37673, Republic of Korea
| | - Won Jong Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea. .,Department of Chemistry, POSTECH-Catholic Biomedical Engineering Institute, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.,OmniaMed Co., Ltd, Pohang 37673, Republic of Korea
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Nong G, Chen S, Xu Y, Huang L, Zou Q, Li S, Mo H, Zhu P, Cen W, Wang S. Artificial photosynthesis of oxalate and oxalate-based polymer by a photovoltaic reactor. Sci Rep 2014; 4:3572. [PMID: 24389750 PMCID: PMC3880959 DOI: 10.1038/srep03572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 12/02/2013] [Indexed: 12/28/2022] Open
Abstract
A photovoltaic reactor was designed for artificial photosynthesis, based on the reactions involved in high energy hydrogen atoms, which were produced from water electrolysis. Water and CO2, under the conditions studied, were converted to oxalate (H2C2O4) and a polymer. This was the first time that the oxalates and oxalate-based polymer were produced from the artificial photosynthesis process.
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Affiliation(s)
- Guangzai Nong
- Center for Sugar Engineering and Technology Research, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Shan Chen
- Center for Sugar Engineering and Technology Research, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Yuanjin Xu
- State key laboratory for conservation and utilization of subtropical agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Lijie Huang
- Center for Sugar Engineering and Technology Research, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Qingsong Zou
- Center for Sugar Engineering and Technology Research, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Shiqiang Li
- Institute of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Haitao Mo
- Center for Sugar Engineering and Technology Research, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Pingchuan Zhu
- State key laboratory for conservation and utilization of subtropical agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Weijian Cen
- State key laboratory for conservation and utilization of subtropical agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, P. R. China
| | - Shuangfei Wang
- Institute of Light Industry and Food Engineering, Guangxi University, Nanning, Guangxi, 530004, P. R. China
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