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Lee YR, Jeong HM, Kim JS, Kim EA, Lee EH, Shim JH. Enzymatic formation of cyclic maltooligosaccharides for the application of quercetin inclusion complex. Carbohydr Polym 2023; 310:120722. [PMID: 36925261 DOI: 10.1016/j.carbpol.2023.120722] [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: 11/16/2022] [Revised: 01/20/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023]
Abstract
To improve the applicability of quercetin (QCT), we produced a QCT and cycloamylose (CA-QCT) inclusion complex based on the cyclization activity of cyclodextrin glucanotransferase (CGTase; EC 2.4.1.19). The encapsulated QCT was purified using recycling preparative high-performance liquid chromatography, and its formation was analyzed using matrix-assisted laser desorption/ionization-time of flight mass spectrometry. The water solubility of CA-QCT was 55,000-fold higher than that of QCT. CA-QCT had 97 % stability for one week at pH 8 in a 4 °C water bath. According to a 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity assay, CA-QCT activity in aqueous solution was 24 times higher than that of an equal amount of QCT in aqueous solution. In an anti-inflammatory assay using lipopolysaccharide-induced RAW264.7 macrophages, CA-QCT in aqueous solution decreased nitric oxide production in a similar manner to QCT in dimethyl sulfoxide (DMSO). Additionally, even under aqueous conditions, CA-QCT more effectively inhibited the production of inflammatory mediators, such as interleukin-1β, interleukin-6, and cyclooxygenase, compared with QCT dissolved in DMSO.
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Affiliation(s)
- Ye-Rim Lee
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Hyun-Mo Jeong
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Ji-Soo Kim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Eun-A Kim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Eun-Hyeong Lee
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Jae-Hoon Shim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea.
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Zhang L, Ma J, Yang F, Li S, Ma W, Chang X, Yang L. Neuroprotective Effects of Quercetin on Ischemic Stroke: A Literature Review. Front Pharmacol 2022; 13:854249. [PMID: 35662707 PMCID: PMC9158527 DOI: 10.3389/fphar.2022.854249] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 04/28/2022] [Indexed: 12/15/2022] Open
Abstract
Ischemic stroke (IS) is characterized by high recurrence and disability; however, its therapies are very limited. As one of the effective methods of treating acute attacks of IS, intravenous thrombolysis has a clear time window. Quercetin, a flavonoid widely found in vegetables and fruits, inhibits immune cells from secreting inflammatory cytokines, thereby reducing platelet aggregation and limiting inflammatory thrombosis. In pre-clinical studies, it has been shown to exhibit neuroprotective effects in patients with ischemic brain injury. However, its specific mechanism of action remains unknown. Therefore, this review aims to use published data to elucidate the potential value of quercetin in patients with ischemic brain injury. This article also reviews the plant sources, pharmacological effects, and metabolic processes of quercetin in vivo, thus focusing on its mechanism in inhibiting immune cell activation and inflammatory thrombosis as well as promoting neuroprotection against ischemic brain injury.
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Affiliation(s)
- Leilei Zhang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Jingying Ma
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Fan Yang
- Guang'anmen Hospital, Chinese Academy of Chinese Medical Sciences, Beijing, China
| | - Sishi Li
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Wangran Ma
- Shaanxi University of Chinese Medicine, Xianyang, China
| | - Xiang Chang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
| | - Lin Yang
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, China
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