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Syed Mohamad SNA, Khatib A, So’ad SZM, Ahmed QU, Ibrahim Z, Nipun TS, Humaryanto H, AlAjmi MF, Khalifa SAM, El-Seedi HR. In Vitro Anti-Diabetic, Anti-Inflammatory, Antioxidant Activities and Toxicological Study of Optimized Psychotria malayana Jack Leaves Extract. Pharmaceuticals (Basel) 2023; 16:1692. [PMID: 38139818 PMCID: PMC10747829 DOI: 10.3390/ph16121692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/18/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Psychotria malayana Jack (Family: Rubiaceae, local name: Salung) is a traditional herb used to treat diabetes. A previous study by our research group demonstrated that P. malayana methanolic and water extract exhibits significant potential as an effective agent for managing diabetes. Further research has been performed on the extraction optimization of this plant to enhance its inhibitory activity against α-glucosidase, a key enzyme associated with diabetes, and to reduce its toxicity. The objectives of this study are to evaluate the anti-diabetic, anti-inflammatory, and antioxidant properties of the optimized P. malayana leaf extract (OE), to evaluate its toxicity using a zebrafish embryo/larvae model, and to analyze its metabolites. The anti-diabetic effects were assessed by investigating α-glucosidase inhibition (AGI), while the inflammation inhibitory activity was performed using the soybean lipoxygenase inhibitory (SLOXI) test. The assessment of antioxidant activity was performed utilizing FRAP and DPPH assays. The toxicology study was conducted using the zebrafish embryo/larvae (Danio rerio) model. The metabolites present in the extracts were analyzed using GC-MS and LC-MS. OE demonstrated significant AGI and SLOXI activities, represented as 2.02 and 4.92 µg/mL for IC50 values, respectively. It exhibited potent antioxidant activities as determined by IC50 values of 13.08 µg/mL (using the DPPH assay) and 95.44 mmol TE/mg DW (using the FRAP assay), and also demonstrated an LC50 value of 224.29 µg/mL, which surpasses its therapeutic index of 111.03. OE exhibited a higher therapeutic index compared to that of the methanol extract (13.84) stated in the previous state of the art. This suggests that OE exhibits a lower level of toxicity, making it safer for use, and has the potential to be highly effective in its anti-diabetic activity. Liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS) demonstrated the presence of several constituents in this extract. Among them, several compounds, such as propanoic acid, succinic acid, D-tagatose, myo-inositol, isorhamnetin, moracin M-3'-O-β-D-glucopyranoside, procyanidin B3, and leucopelargonidin, have been reported as possessing anti-diabetic and antioxidant activities. This finding offers great potential for future research in diabetes treatment.
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Affiliation(s)
- Sharifah Nurul Akilah Syed Mohamad
- Pharmacognosy Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia; (S.N.A.S.M.); (S.Z.M.S.); (Q.U.A.); (Z.I.)
| | - Alfi Khatib
- Pharmacognosy Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia; (S.N.A.S.M.); (S.Z.M.S.); (Q.U.A.); (Z.I.)
- Central Research and Animal Facility, Kulliyyah of Science, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia
- Faculty of Pharmacy, Airlangga University, Surabaya 60155, Indonesia
| | - Siti Zaiton Mat So’ad
- Pharmacognosy Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia; (S.N.A.S.M.); (S.Z.M.S.); (Q.U.A.); (Z.I.)
| | - Qamar Uddin Ahmed
- Pharmacognosy Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia; (S.N.A.S.M.); (S.Z.M.S.); (Q.U.A.); (Z.I.)
| | - Zalikha Ibrahim
- Pharmacognosy Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang Darul Makmur, Malaysia; (S.N.A.S.M.); (S.Z.M.S.); (Q.U.A.); (Z.I.)
| | - Tanzina Sharmin Nipun
- Department of Pharmacy, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh;
| | | | - Mohamed F. AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia;
| | - Shaden A. M. Khalifa
- Psychiatry and Psychology Department, Capio Saint Göran’s Hospital, Sankt Göransplan 1, 112 19 Stockholm, Sweden;
| | - Hesham R. El-Seedi
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom 31100107, Egypt
- International Joint Research Laboratory of Intelligent Agriculture and Agri-Products Processing, Jiangsu Education Department, Jiangsu University, Nanjing 210024, China
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Vendrame S, Adekeye TE, Klimis-Zacas D. The Role of Berry Consumption on Blood Pressure Regulation and Hypertension: An Overview of the Clinical Evidence. Nutrients 2022; 14:nu14132701. [PMID: 35807881 PMCID: PMC9268395 DOI: 10.3390/nu14132701] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 02/06/2023] Open
Abstract
The existence of a relationship between the consumption of dietary berries and blood pressure reduction in humans has been repeatedly hypothesized and documented by an increasing body of epidemiological and clinical evidence that has accumulated in recent years. However, results are mixed and complicated by a number of potentially confounding factors. The objective of this article is to review and summarize the available clinical evidence examining the effects of berry consumption on blood pressure regulation as well as the prevention or treatment of hypertension in humans, providing an overview of the potential contribution of distinctive berry polyphenols (anthocyanins, condensed tannins and ellagic acid), and results of dietary interventions with blueberries, bilberries, cranberries, raspberries, strawberries, chokeberries, cherries, blackcurrants and açai berries. We conclude that, while there is insufficient evidence supporting the existence of a direct blood pressure lowering effect, there is stronger evidence for specific types of berries acting indirectly to normalize blood pressure in subjects that are already hypertensive.
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Zhang Y, Song C, Du H, Chen Y, Huang X, Gong L, You P, Deng J, Liu Y, Feng H, Zhang Z, Yu K, Chen Y. Novel Functional Food from an invasive species Polygonum cuspidatum: Safety evaluation, Chemical Composition, and Hepatoprotective Effects. FOOD QUALITY AND SAFETY 2022. [DOI: 10.1093/fqsafe/fyac032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Accidentally, we found that the shoots of Polygonum cuspidatum (SPC) have been consumed for centuries as a traditional vegetable in the Shennongjia region of China. Local residents believe that SPC has biological effects such as antibacterial, anti-aging, and antioxidant. To provide scientific support for the use of SPC as a functional food, SPC was evaluated in terms of safety, chemical composition, antioxidant activity both in vivo and in vitro. In the first, SPC exhibited no adverse cytotoxic effects or acute toxicity in mice. Then the chemical composition of SPC was determined by UHPLC-ESI-QTOF-MS/MS. 22 compounds were identified from the SPC extracts, including phenolic, flavonoid, stilbene, and anthraquinone. Finally, an acute ethanol-induced oxidative stress model in mice showed hepatoprotective effects. In brief, our study indicated that SPC is a safe, multi-functional food with antioxidant and hepatoprotective activities. Importantly, the consumption of SPC as a functional food provides a novel strategy of efficient utilization of the invasive plant.
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Zineb OY, Rashwan AK, Karim N, Lu Y, Tangpong J, Chen W. Recent Developments in Procyanidins on Metabolic Diseases, Their Possible Sources, Pharmacokinetic Profile, and Clinical Outcomes. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2062770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ould Yahia Zineb
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Ahmed K. Rashwan
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Department of Food and Dairy Sciences, Faculty of Agriculture, South Valley University, Qena 83523, Egypt
| | - Naymul Karim
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Yang Lu
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Jitbanjong Tangpong
- Biomedical Sciences, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Wei Chen
- Department of Food Science and Nutrition, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
- Biomedical Sciences, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
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Zhang S, Yu Z, Sun L, Ren H, Zheng X, Liang S, Qi X. An overview of the nutritional value, health properties, and future challenges of Chinese bayberry. PeerJ 2022; 10:e13070. [PMID: 35265403 PMCID: PMC8900607 DOI: 10.7717/peerj.13070] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/15/2022] [Indexed: 01/12/2023] Open
Abstract
Chinese bayberry (CB) is among the most popular and valuable fruits in China owing to its attractive color and unique sweet/sour taste. Recent studies have highlighted the nutritional value and health-related benefits of CB. CB has special biological characteristics of evergreen, special aroma, dioecious, nodulation, nitrogen fixation. Moreover, the fruits, leaves, and bark of CB plants harbor a number of bioactive compounds including proanthocyanidins, flavonoids, vitamin C, phenolic acids, and anthocyanins that have been linked to the anti-cancer, anti-oxidant, anti-inflammatory, anti-obesity, anti-diabetic, and neuroprotective properties and to the treatment of cardiovascular and cerebrovascular diseases. The CB fruits have been used to produce a range of products: beverages, foods, and washing supplies. Future CB-related product development is thus expected to further leverage the health-promoting potential of this valuable ecological resource. The present review provides an overview of the botanical characteristics, processing, nutritional value, health-related properties, and applications of CB in order to provide a foundation for further research and development.
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Affiliation(s)
- Shuwen Zhang
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Zheping Yu
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Li Sun
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Haiying Ren
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Xiliang Zheng
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Senmiao Liang
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
| | - Xingjiang Qi
- Zhejiang Academy of Agricultural Sciences, Institute of Horticulture, Hangzhou, Jianggan, China
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Effect of Magnesium Ion on the Radical-Scavenging Rate of Pterostilbene in an Aprotic Medium: Mechanistic Insight into the Antioxidative Reaction of Pterostilbene. Antioxidants (Basel) 2022; 11:antiox11020340. [PMID: 35204222 PMCID: PMC8868536 DOI: 10.3390/antiox11020340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 02/01/2023] Open
Abstract
Pterostilbene (PTS), a methylated analog of resveratrol (RSV), has recently attracted much attention due to its enhanced bioavailability compared to RSV. However, little is known about the radical-scavenging mechanism of PTS. In this study, we investigated the effect of Mg(ClO4)2 on the scavenging reaction of galvinoxyl radical (GO•) by PTS in acetonitrile (MeCN). GO• was used as a model for reactive oxygen radicals. The second-order rate constant (kH) for the GO•-scavenging reaction by PTS was more than threefold larger than that by RSV, although thermodynamic parameters, such as the relative O–H bond dissociation energies of the phenolic OH groups, ionization potentials, and HOMO energies calculated by the density functional theory are about the same between PTS and RSV. The oxidation peak potential of PTS determined by the cyclic voltammetry in MeCN (0.10 M Bu4NClO4) was also virtually the same as that of RSV. On the other hand, no effect of Mg (ClO4)2 on the kH values was observed for PTS, in contrast to the case for RSV. A kinetic isotope effect of 3.4 was observed when PTS was replaced by a deuterated PTS. These results suggest that a one-step hydrogen-atom transfer from PTS to GO• may be the rate-determining step in MeCN.
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Dołowacka-Jóźwiak A, Matkowski A, Nawrot-Hadzik I. Antiglycoxidative Properties of Extracts and Fractions from Reynoutria Rhizomes. Nutrients 2021; 13:nu13114066. [PMID: 34836321 PMCID: PMC8622691 DOI: 10.3390/nu13114066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 11/18/2022] Open
Abstract
Hyperglycemia, when sustained over a long time in diabetes mellitus (DM), leads to biochemical and cellular abnormalities, primarily through the formation of advanced glycation end-products (AGEs). In the treatment of diabetes, beside blood-sugar-lowering medications, a consumption of herbal products that can inhibit the AGEs’ formation is recommended. This study investigated the in vitro antiglycoxidative potential of extracts and fractions from the rhizomes of Japanese, Giant, and Bohemian knotweeds (Reynoutria japonica (Houtt.), R. sachalinensis (F. Schmidt) Nakai, and R.× bohemica Chrtek et Chrtkova). Their effects on glycooxidation of bovine and human serum albumin were evaluated by incubation of the proteins with a mixture of glucose and fructose (0.5 M) and 150 µg/mL of extract for 28 days at 37 °C, followed by measuring early and late glycation products, albumin oxidation (carbonyl and free thiol groups), and amyloid-β aggregation (thioflavin T and Congo red assays). The highest antiglycoxidative activity, comparable or stronger than the reference drug (aminoguanidine), was observed for ethyl acetate and diethyl ether fractions, enriched in polyphenols (stilbenes, phenylpropanoid disaccharide esters, and free and oligomeric flavan-3-ols). In conclusion, the antiglycoxidative compounds from these three species should be further studied for potential use in the prevention and complementary treatment of DM.
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Affiliation(s)
| | - Adam Matkowski
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Botanical Garden of Medicinal Plants, Wroclaw Medical University, 50556 Wroclaw, Poland
- Correspondence: (A.M.); (I.N.-H.)
| | - Izabela Nawrot-Hadzik
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Botanical Garden of Medicinal Plants, Wroclaw Medical University, 50556 Wroclaw, Poland
- Correspondence: (A.M.); (I.N.-H.)
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Mizuno M, Mori K, Tsuchiya K, Takaki T, Misawa T, Demizu Y, Shibanuma M, Fukuhara K. Design, Synthesis, and Biological Activity of Conformationally Restricted Analogues of Silibinin. ACS OMEGA 2020; 5:23164-23174. [PMID: 32954167 PMCID: PMC7495755 DOI: 10.1021/acsomega.0c02936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/30/2020] [Indexed: 05/12/2023]
Abstract
Silibinin (Sib), one of the main components of milk thistle extract, has attracted considerable attention because of its various biological activities, which include antioxidant activity and potential effects in diabetes and Alzheimer's disease (AD). In a previous study, we synthesized catechin analogues by constraining the geometries of (+)-catechin and (-)-epicatechin. The constrained analogues exhibited enhanced bioactivities, with the only major difference between the two being their three-dimensional structures. The constrained geometry in (+)-catechin resulted in a high degree of planarity (PCat), while (-)-epicatechin failed to maintain planarity (PEC). The three-dimensional structure of Sib may be related to its ability to inhibit aggregation of amyloid beta (Aβ). We therefore introduced PCat and PEC into Sib to demonstrate how the constrained molecular geometry and differences in three-dimensional structures may enhance such activities. Introduction of PCat into Sib (SibC) resulted in effective inhibition of Aβ aggregation, α-glucosidase activity, and cell growth, suggesting that not only reduced flexibility but also the high degree of planarity may enhance the biological activity. SibC is expected to be a promising lead compound for the treatment of several diseases.
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Affiliation(s)
- Mirei Mizuno
- Division
of Organic and Medicinal Chemistry, School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kazunori Mori
- Division
of Cancer Cell Biology, School of Pharmacy, Showa University, 1-5-8
Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Keisuke Tsuchiya
- Division
of Organic and Medicinal Chemistry, School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
- Division
of Organic Chemistry, National Institute
of Health Sciences, 3-25-26
Tonomachi, Kawasaki-ku, Kawasaki-City, Kanagawa 210-9501, Japan
| | - Takashi Takaki
- Division
of Electron Microscopy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Takashi Misawa
- Division
of Organic Chemistry, National Institute
of Health Sciences, 3-25-26
Tonomachi, Kawasaki-ku, Kawasaki-City, Kanagawa 210-9501, Japan
| | - Yosuke Demizu
- Division
of Organic Chemistry, National Institute
of Health Sciences, 3-25-26
Tonomachi, Kawasaki-ku, Kawasaki-City, Kanagawa 210-9501, Japan
| | - Motoko Shibanuma
- Division
of Cancer Cell Biology, School of Pharmacy, Showa University, 1-5-8
Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kiyoshi Fukuhara
- Division
of Organic and Medicinal Chemistry, School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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Corso M, Perreau F, Mouille G, Lepiniec L. Specialized phenolic compounds in seeds: structures, functions, and regulations. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 296:110471. [PMID: 32540001 DOI: 10.1016/j.plantsci.2020.110471] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 03/11/2020] [Accepted: 03/13/2020] [Indexed: 05/24/2023]
Abstract
Plants produce a huge diversity of specialized metabolites (SM) throughout their life cycle that play important physiological and ecological functions. SM can protect plants and seeds against diseases, predators, and abiotic stresses, or support their interactions with beneficial or symbiotic organisms. They also have strong impacts on human nutrition and health. Despite this importance, the biosynthesis and biological functions of most of the SM remain elusive and their diversity and/or quantity have been reduced in most crops during domestication. Seeds present a large number of SM that are important for their physiological, agronomic, nutritional or industrial qualities and hence, provide interesting models for both studying biosynthesis and producing large amounts of specialized metabolites. For instance, phenolics are abundant and widely distributed in seeds. More specifically, flavonoid pathway has been instrumental for understanding environmental or developmental regulations of specialized metabolic pathways, at the molecular and cellular levels. Here, we summarize current knowledge on seed phenolics as model, and discuss how recent progresses in omics approaches could help to further characterize their diversity, regulations, and the underlying molecular mechanisms involved.
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Affiliation(s)
- Massimiliano Corso
- Institut Jean-Pierre Bourgin, Université Paris-Saclay, INRAE, AgroParisTech, 78000, Versailles, France.
| | - François Perreau
- Institut Jean-Pierre Bourgin, Université Paris-Saclay, INRAE, AgroParisTech, 78000, Versailles, France
| | - Grégory Mouille
- Institut Jean-Pierre Bourgin, Université Paris-Saclay, INRAE, AgroParisTech, 78000, Versailles, France
| | - Loïc Lepiniec
- Institut Jean-Pierre Bourgin, Université Paris-Saclay, INRAE, AgroParisTech, 78000, Versailles, France
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Zhao L, Wen L, Lu Q, Liu R. Interaction mechanism between α-glucosidase and A-type trimer procyanidin revealed by integrated spectroscopic analysis techniques. Int J Biol Macromol 2019; 143:173-180. [PMID: 31816382 DOI: 10.1016/j.ijbiomac.2019.12.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/17/2022]
Abstract
α-Glucosidase is an important enzyme in human intestine, and inhibition of its activity can lower blood sugar levels to effectively prevent hyperglycaemia induced tissue damage. Here, we investigated the inhibitory activities of procyanidins with different structures on α-glucosidase and the underlying mechanism. The results showed that the IC50 of catechin and compounds 2-7 on α-glucosidase was lower than that of acarbose. A-type procyanidins might have better inhibitory activity than B-type procyanidins. In addition, there was no positive correlation between the polymerization degree of A-type procyanidin oligomer and its inhibitory effect on α-glucosidase. Compound 7 (A-type trimer) with the best inhibitory effect reversibly inhibited the activity of α-glucosidase in a mixed-type manner. Fluorescence data confirmed that the intrinsic fluorescence of α-glucosidase was quenched by compound 7 through static-dynamic quenching. The calculated thermodynamic parameters indicated that their binding was spontaneous and driven by hydrophobic interaction, which was also confirmed by the UV spectrum experiment. Besides, circular dichroism analysis displayed that their binding resulted in conformational changes of α-glucosidase characterized by a decrease in α-helix and an increase in β-sheet. The results demonstrate the ability of procyanidins to intervene in the progression of type 2 diabetes by inhibiting α-glucosidase.
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Affiliation(s)
- Li Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Luming Wen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qun Lu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China; Wuhan Engineering Research Center of Bee Products on Quality and Safety Control, Wuhan 430070, China
| | - Rui Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China; Wuhan Engineering Research Center of Bee Products on Quality and Safety Control, Wuhan 430070, China.
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11
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Mizuno M, Mori K, Misawa T, Takaki T, Demizu Y, Shibanuma M, Fukuhara K. Inhibition of β-amyloid-induced neurotoxicity by planar analogues of procyanidin B3. Bioorg Med Chem Lett 2019; 29:2659-2663. [PMID: 31371134 DOI: 10.1016/j.bmcl.2019.07.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/05/2019] [Accepted: 07/22/2019] [Indexed: 10/26/2022]
Abstract
Reactive oxygen species (ROS) are known to be produced during the amyloid beta (Aβ) aggregation process. Both ROS production and Aβ fibril formation can result in nerve cell injury. Proanthocyanidins are oligomers of catechin that can act as inhibitors of Aβ aggregation. Procyanidin B3 (Cat-Cat), the dimer of (+)-catechin, can easily cross the blood-brain barrier. Previously, we synthesized two derivatives of Cat-Cat, namely Cat-PCat and PCat-PCat, in which the geometry of one or both catechin molecules in Cat-Cat was constrained to be planar. The antioxidative activities of Cat-PCat and PCat-PCat were found to be stronger than that of Cat-Cat, with PCat-PC at exhibiting the most potent activity. These compounds are predicted to protect against Aβ-induced neurotoxicity via inhibition of Aβ aggregation as well as by antioxidative effects toward Aβ-induced intracellular ROS generation. PCat-PCat exhibited the most potent neuroprotective effects against Aβ-induced cytotoxicity, which resulted from inhibition of β-sheet structure formation during the Aβ aggregation process. PCat-PCat may be a promising lead compound for the treatment of Alzheimer's disease.
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Affiliation(s)
- Mirei Mizuno
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kazunori Mori
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Takashi Misawa
- Division of Organic Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Takashi Takaki
- Division of Electron Microscopy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Yosuke Demizu
- Division of Organic Chemistry, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Motoko Shibanuma
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kiyoshi Fukuhara
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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Rauf A, Imran M, Abu-Izneid T, Iahtisham-Ul-Haq, Patel S, Pan X, Naz S, Sanches Silva A, Saeed F, Rasul Suleria HA. Proanthocyanidins: A comprehensive review. Biomed Pharmacother 2019; 116:108999. [PMID: 31146109 DOI: 10.1016/j.biopha.2019.108999] [Citation(s) in RCA: 338] [Impact Index Per Article: 67.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 02/06/2023] Open
Abstract
Proanthocyanidins are condensed tannins with various pharmacological properties. These phytochemicals are considered as 'offense and defense molecules because of their human health benefits. The validation of their diverse health aspects, namely, antioxidant, anticancer, antidiabetic, neuroprotective, and antimicrobial has earned them repute in thermochemistry. Proanthocyanidins are oligo- or polymers of monomeric flavan-3-ols produced as an end product of flavonoid biosynthetic pathway. Agricultural wastes and food processing wastes contain immense amount of proanthocyanidins, exploitation of which can be a sustainable source of dietary supplements and functional ingredients. The current review article discusses recent developments in the health promoting properties of proanthocyanidins and the associated hurdles.
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Affiliation(s)
- Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar, KPK, Pakistan
| | - Muhammad Imran
- University Institute of Diet & Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Pakistan
| | - Tareq Abu-Izneid
- Department of Pharmaceutical Sciences, College of Pharmacy, Al Ain University of Science and Technology, Al Ain Campus, UAE
| | - Iahtisham-Ul-Haq
- Department of Diet and Nutritional Sciences, Faculty of Health and Allied Sciences, Imperial College of Business Studies, Lahore, Pakistan
| | - Seema Patel
- Bioinformatics and Medical Informatics Research Center, San Diego State University, San Diego, 92182, USA
| | - Xiandao Pan
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China.
| | - Saima Naz
- Department of Biotechnology, Woman University Mardan, Mardan, KPK, Pakistan
| | - Ana Sanches Silva
- National Institute for Agricultural and Veterinary Research, 4485-655, Vila do Conde, Portugal
| | - Farhan Saeed
- Department of Food Science, Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
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Abstract
Flavan-3-ols are a series of natural products widely present in plants and show versatile biological activities. The structures of such compounds are characterized by owing two adjacent chiral centers and three rings. Their interesting structures and promising biological activities have driven increasing research developments toward the preparation of enantioenriched flavan-3-ols. This review summarizes the recent approaches for the asymmetric synthesis of chiral flavan-3-ols from two strategies in the construction of chiral centers. The key steps in the synthetic protocol involve Sharpless asymmetric dihydroxylation, Shi asymmetric epoxidation and Sharpless asymmetric epoxidation.
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Affiliation(s)
- Zehua Yang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Fang Xiao
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Yinxiang Zhang
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
| | - Zaoduan Wu
- c Affiliated Nanhua Hospital, University of South China , Hengyang , Hunan , PR China
| | - Xing Zheng
- a Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China , Hengyang , Hunan , PR China.,b Institute of Pharmacy & Pharmacology, University of South China , Hengyang , Hunan , PR China
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Zheng S, Huang K, Zhao C, Xu W, Sheng Y, Luo Y, He X. Procyanidin attenuates weight gain and modifies the gut microbiota in high fat diet induced obese mice. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.09.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Sekine-Suzuki E, Nakanishi I, Imai K, Ueno M, Shimokawa T, Matsumoto KI, Fukuhara K. Efficient protective activity of a planar catechin analogue against radiation-induced apoptosis in rat thymocytes. RSC Adv 2018; 8:10158-10162. [PMID: 35540490 PMCID: PMC9078822 DOI: 10.1039/c7ra13111a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/02/2018] [Indexed: 02/01/2023] Open
Abstract
About two thirds of biological damage due to low linear energy transfer (LET) radiation, such as X-rays and the plateau region of heavy-ion beams, is known to be caused by the hydroxyl radical (˙OH), the most powerful reactive oxygen species (ROS), generated via ionisation and excitation of water molecules. Thus, compounds having an efficient scavenging activity against ROS are expected to exhibit a radioprotective activity. A planar catechin analogue, where an isopropyl fragment was introduced into the catechol ring of (+)-catechin, showed an efficient protective effect against X-ray induced apoptosis in rat thymocytes compared to (+)-catechin. The planar catechin scavenged 2,2-diphenyl-1-picrylhydrazyl radicals (DPPH˙) solubilised in water by β-cyclodextrin about 10-fold faster than (+)-catechin in phosphate buffer (0.1 M, pH 7.4) at 298 K. Furthermore, the experimental log P value of the planar catechin (1.22) is reported to be significantly larger than that of (+)-catechin (0.44). The higher radical-scavenging activity and lipophilicity of the planar catechin than those of (+)-catechin may contribute in part to the higher protective activity against X-ray-induced apoptosis in rat thymocytes. A planar catechin analogue showed a significant higher protective activity against X-ray induced apoptosis in rat thymocytes than (+)-catechin.![]()
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Affiliation(s)
- Emiko Sekine-Suzuki
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
| | - Ikuo Nakanishi
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
| | - Kohei Imai
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
| | - Megumi Ueno
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
| | - Takashi Shimokawa
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
| | - Ken-ichiro Matsumoto
- Quantitative RedOx Sensing Team (QRST)
- Department of Basic Medical Sciences for Radiation Damages
- National Institute of Radiological Sciences (NIRS)
- National Institutes for Quantum and Radiological Science and Technology (QST)
- Japan
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Mizuno M, Nakanishi I, Matsumoto KI, Fukuhara K. Enhanced radical scavenging activity of a procyanidin B3 analogue comprised of a dimer of planar catechin. Bioorg Med Chem Lett 2017; 27:5010-5013. [PMID: 29054360 DOI: 10.1016/j.bmcl.2017.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 10/03/2017] [Accepted: 10/05/2017] [Indexed: 01/11/2023]
Abstract
Proanthocyanidins are oligomers of catechins that exhibit potent antioxidative activity and inhibit binding of oxidized low-density lipoprotein (OxLDL) to the lectin-like oxidized LDL receptor (LOX-1), which is involved in the onset and development of arteriosclerosis. Previous attempts aimed at developing proanthocyanidin derivatives with more potent antioxidative activity and stronger inhibition for LOX-1 demonstrated the synthesis of a novel proanthocyanidin derivative (1), in which the geometry of one catechin molecule in procyanidin B3 was constrained to a planar orientation. The radical scavenging activity of 1 was 1.9-fold higher than that of procyanidin B3. Herein, we synthesized another procyanidin B3 analogue (2), in which the geometries of both catechin molecules in the dimer were constrained to planar orientations. The radical scavenging activity of 2 was 1.5-fold higher than that of 1, suggesting that 2 may be a more effective candidate than 1 as a therapeutic agent to reduce oxidative stress induced in arteriosclerosis or related cerebrovascular disease.
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Affiliation(s)
- Mirei Mizuno
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Ikuo Nakanishi
- Quantitative RedOx Sensing Team (QRST), Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), Inage-ku, Chiba 263-8555, Japan
| | - Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Team (QRST), Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), Inage-ku, Chiba 263-8555, Japan
| | - Kiyoshi Fukuhara
- School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.
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