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Raksat A, Atanu MSH, Mendez S, Zerda RDL, Sun R, Cheenpracha S, Wall M, Simmons CJ, Williams PG, Tan GT, Wongwiwatthananukit S, Chang LC. Bioassay-Guided Isolation and Identification of Cytotoxic Compounds from Melaleuca quinquenervia Fruits. ACS OMEGA 2024; 9:18516-18525. [PMID: 38680310 PMCID: PMC11044245 DOI: 10.1021/acsomega.4c00769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/22/2024] [Accepted: 03/28/2024] [Indexed: 05/01/2024]
Abstract
The fruit extract of Melaleuca quinquenervia yielded a total of 19 compounds, including two novel spiro-biflavonoid enantiomers (1a and 1b) and a chalcone derivative (3). Their structures were determined through spectroscopic analysis. The enantiomers of the racemic mixture of compound 1 were successfully resolved into (+)-1 and (-)-1 using chiral-phase HPLC. Single-crystal X-ray diffraction analysis was also used to confirm the structure of 1. The enantiomeric configurations of 1 and 2 were determined through a comparison of the calculated and experimental electronic circular dichroism spectra. Compounds 2 (melanervin), 14 (methyl betulinate), 15 (3-O-acetylbetulinic acid), and 16 (pyracrenic acid) were found to be highly cytotoxic, with compound 16 showing superior growth inhibition of nonsmall cell lung cancer cells (A549 cells) (IC50 2.8 ± 0.1 μM) compared to cisplatin (IC50 3.3 ± 0.0 μM), a positive control chemotherapeutic drug. Both compound 16 and cisplatin were significantly more cytotoxic toward A549 lung cancer cells compared to nontumorigenic Vero E6 cells.
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Affiliation(s)
- Achara Raksat
- Department
of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai‘i at Hilo, Hilo, Hawaii 96720, United States
| | - Md Samiul Huq Atanu
- Department
of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai‘i at Hilo, Hilo, Hawaii 96720, United States
| | - Sheyanne Mendez
- X-ray
Diffraction Laboratory, Department of Chemistry, University of Hawai‘i at Hilo, 200 West Kawili Street, Hilo, Hawai‘i 96720, United States
| | - Rafael de la Zerda
- Department
of Chemistry, University of Hawai‘i
at Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Rui Sun
- Department
of Chemistry, University of Hawai‘i
at Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Sarot Cheenpracha
- Division
of Chemistry, School of Science, University
of Phayao, Phayao 56000, Thailand
| | - Marisa Wall
- Daniel
K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, Hawaii 96720, United States
| | - Charles J. Simmons
- X-ray
Diffraction Laboratory, Department of Chemistry, University of Hawai‘i at Hilo, 200 West Kawili Street, Hilo, Hawai‘i 96720, United States
| | - Philip G. Williams
- Department
of Chemistry, University of Hawai‘i
at Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822, United States
| | - Ghee T. Tan
- Department
of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai‘i at Hilo, Hilo, Hawaii 96720, United States
| | - Supakit Wongwiwatthananukit
- Department
of Pharmacy Practice, The Daniel K. Inouye College of Pharmacy, University of Hawai‘i at Hilo, Hilo, Hawaii 96720, United States
| | - Leng Chee Chang
- Department
of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai‘i at Hilo, Hilo, Hawaii 96720, United States
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Zhang S, Ren H, Sun HT, Cao S. Cytotoxic Effects of Castalin Nanoparticles Against Osteosarcoma. Appl Biochem Biotechnol 2023; 195:5355-5364. [PMID: 35226253 DOI: 10.1007/s12010-022-03846-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2022] [Indexed: 12/01/2022]
Abstract
The size-dependent bioactivities of castalin were analyzed by comparing the cytotoxic effects of native castalin and castalin nanoparticles on osteosarcoma in vitro and in vivo. In vitro experiments indicated that castalin nanoparticles induced apoptosis of an osteosarcoma cell line more efficiently than native castalin. The more potent effects of castalin nanoparticles, relative to native castalin, were confirmed in vivo using a xenograft osteosarcoma model. Caco-2 cell transport studies showed that permeation of castalin nanoparticles was higher than native castalin. The higher bioactivity and superior bioavailability of castalin nanoparticles could potentially be utilised to develop novel therapies for osteosarcoma.
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Affiliation(s)
- Shouqiang Zhang
- Department of Orthopaedic & Trauma Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247 Beiyuan Street, Jinan, 250033, Shandong, China
| | - Hui Ren
- Department of Cardiothoracic Surgery, Xinwen Mining Group Central Hospital, Xintai City, 271200, Shandong, China
| | - Han Ting Sun
- Department of Orthopaedic Surgery, ZouPing Hospital of TCM, ZouPing City, 256200, Shandong, China
| | - Songhua Cao
- Department of Hand Surgery/Foot & Ankle Surgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, No. 247 Beiyuan Street, Jinan, 250033, Shandong, China.
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Zhang YQ, Zhang M, Wang ZL, Qiao X, Ye M. Advances in plant-derived C-glycosides: Phytochemistry, bioactivities, and biotechnological production. Biotechnol Adv 2022; 60:108030. [PMID: 36031083 DOI: 10.1016/j.biotechadv.2022.108030] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/01/2022] [Accepted: 08/22/2022] [Indexed: 02/06/2023]
Abstract
C-glycosides represent a large group of natural products with a C-C bond between the aglycone and the sugar moiety. They exhibit great structural diversity, wide natural distribution, and significant biological activities. By the end of 2021, at least 754 C-glycosides and their derivatives have been isolated and characterized from plants. Thus far, 66 functional C-glycosyltransferases (CGTs) have been discovered from plants, and provide green and efficient approaches to synthesize C-glycosides. Herein, advances in plant-derived C-glycosides are comprehensively summarized from aspects of structural diversity and identification, bioactivities, and biotechnological production. New strategies to discover novel C-glycosides and CGTs, as well as the applications of biotechnological methods to produce C-glycosides in the future are also discussed.
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Affiliation(s)
- Ya-Qun Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Meng Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Zi-Long Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Xue Qiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China; Peking University-Yunnan Baiyao International Medical Research Center, 38 Xueyuan Road, Beijing 100191, China.
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China; Peking University-Yunnan Baiyao International Medical Research Center, 38 Xueyuan Road, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, Peking University, 38 Xueyuan Road, Beijing 100191, China.
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Polyphenol from Rosaroxburghii Tratt Fruit Ameliorates the Symptoms of Diabetes by Activating the P13K/AKT Insulin Pathway in db/db Mice. Foods 2022; 11:foods11050636. [PMID: 35267269 PMCID: PMC8909201 DOI: 10.3390/foods11050636] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/14/2022] [Accepted: 02/20/2022] [Indexed: 02/07/2023] Open
Abstract
About 4% of the world’s population has type 2 diabetes mellitus (T2DM), and the available hypoglycemic drugs for treating diabetes have some side effects. Therefore, research on the extraction of hypoglycemic components from plants has gradually become popular. This study aimed to investigate the hypoglycemic effects of polyphenol-rich Rosa roxburghii Tratt extract (RP) isolated from Rosa roxburghii Tratt fruit and of four constituents (IRP 1–4 ) isolated from RP on db/db mice. The results indicated that the oral administration of RP and IRP 1–4 could markedly decrease the food intake, water intake, fasting blood glucose (FBG), and serum insulin levels in the db/db mice. Glucose intolerance, insulin resistance, and oxidative stress were ameliorated in the RP and IRP 1–4 groups. Histopathological observation revealed that RP and IRP 1–4 could effectively protect the liver fat against damage and dysfunction. RP and IRP 1–4 also increased the hepatic and muscle glycogen contents by increasing the phosphorylation and reducing the expression of glycogen synthase kinase 3β (GSK3β). The activities of glucokinase (GCK), phosphoenolpyruvate carboxylase (PEPCK), and glucose-6-phosphatase (G6PC) and their respective mRNA expression levels in the liver of db/db mice were simultaneously increased and decreased in the intervention groups. RP and IRP 1–4 significantly increased the expression of phosphatidylinositol 3-kinase (P13K) and the phosphorylation of protein kinase B (AKT). These results indicate that RP and IRP 1–4 exhibit good hypoglycemic effects by activating the P13K/AKT signaling pathway and regulating the expression of FOXO1 and p-GSK3β proteins, controlling hepatic gluconeogenesis and improving hepatic glycogen storage insulin resistance. Therefore, RP and IRP 1–4 could be utilized as the hypoglycemic functional component to alleviate the symptoms of T2DM.
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Mahgoub S, Hashad N, Ali S, Ibrahim R, Said AM, Moharram FA, Mady M. Polyphenolic Profile of Callistemon viminalis Aerial Parts: Antioxidant, Anticancer and In Silico 5-LOX Inhibitory Evaluations. Molecules 2021; 26:molecules26092481. [PMID: 33923148 PMCID: PMC8123052 DOI: 10.3390/molecules26092481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 12/24/2022] Open
Abstract
Five new compounds viz kaempferol 3-O-(4″-galloyl)-β-d-glucopyranosyl-(1‴→6″)-O-β-d-glucopyranoside (1), kaempferol 3-O-β-d-mannuronopyranoside (2), kaempferol 3-O-β-d-mannopyranoside (3), quercetin 3-O-β-d-mannuronopyranoside (4), 2, 3 (S)- hexahydroxydiphenoyl]-d-glucose (5) along with fifteen known compounds were isolated from 80% aqueous methanol extract (AME) of C. viminalis. AME and compounds exerted similar or better antioxidant activity to ascorbic acid using DPPH, O2−, and NO inhibition methods. In addition, compounds 16, 4, and 7 showed cytotoxic activity against MCF-7 cell lines while 3, 7 and 16 exhibited strong activity against HepG2. An in silico analysis using molecular docking for polyphenolic compounds 2, 3, 7, 16 and 17 against human stable 5-LOX was performed and compared to that of ascorbic acid and quercetin. The binding mode as well as the enzyme-inhibitor interactions were evaluated. All compounds occupied the 5-LOX active site and showed binding affinity greater than ascorbic acid or quercetin. The data herein suggest that AME, a source of polyphenols, could be used against oxidative-stress-related disorders.
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Affiliation(s)
- Shahenda Mahgoub
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Ein-Helwan, Helwan, Cairo 11795, Egypt;
- Correspondence: (S.M.); (A.M.S.); (F.A.M.); Tel.: +1716-907-5016 (A.M.S.); +202-2554-160 (F.A.M.)
| | - Nashwa Hashad
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein Helwan, Cairo 11795, Egypt; (N.H.); (R.I.); (M.M.)
| | - Sahar Ali
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Ein-Helwan, Helwan, Cairo 11795, Egypt;
| | - Reham Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein Helwan, Cairo 11795, Egypt; (N.H.); (R.I.); (M.M.)
| | - Ahmed M. Said
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Helwan University, Ein-Helwan, Helwan, Cairo 11795, Egypt
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
- Correspondence: (S.M.); (A.M.S.); (F.A.M.); Tel.: +1716-907-5016 (A.M.S.); +202-2554-160 (F.A.M.)
| | - Fatma A. Moharram
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein Helwan, Cairo 11795, Egypt; (N.H.); (R.I.); (M.M.)
- Correspondence: (S.M.); (A.M.S.); (F.A.M.); Tel.: +1716-907-5016 (A.M.S.); +202-2554-160 (F.A.M.)
| | - Mohamed Mady
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein Helwan, Cairo 11795, Egypt; (N.H.); (R.I.); (M.M.)
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Ibrahim RR, Ibrahim HA, Shabana SS, El-Hosari DG, Ali SA, Mahgoub S, Moharram FA. New phenolic compounds from Calothamnus quadrifidus R.Br. aerial parts and their antioxidant activity. Nat Prod Res 2020; 35:5183-5191. [PMID: 32643423 DOI: 10.1080/14786419.2020.1789982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Two new compounds calothphenone (1) and 6-methoxy kaempferol 3-O-(6″-E-p-coumaroyl)-β-d-glucopyranoside (6-methoxy tiliroside) (2) along with six known compounds viz gallic acid (3), methyl gallate (4), kaempferol 3-O-(6″-E-p-coumaroyl)-β-d-glucopyranoside (tiliroside) (5), castalagin (6), kaempferol (7) and quercetin (8) were isolated from the ethyl acetate fraction (EAF) of 80% aqueous methanol extract of Calothamnus quadrifidus aerial parts. Their structure was established based on different chemical and spectroscopic techniques (1H-/13C-NMR and 2D NMR). Antioxidant activity for EAF and compounds 1, 2 and 5 was evaluated using DPPH, superoxide radical and nitric oxide (NO) inhibition methods. EAF exhibited strong activity to inhibit DPPH, superoxide and NO radicals. Moreover, all tested compounds demonstrated a close high ability to inhibit superoxide and NO radicals in comparison to ascorbic acid, but they exerted lower activity towards DPPH radical.[Figure: see text].
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Affiliation(s)
- Reham R Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
| | - Haitham A Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
| | - Samah S Shabana
- Department of Pharmacognosy, Faculty of Pharmaceutical Science and drug manufacturing, Misr University for Science and Technology, Giza, Egypt
| | - Doaa G El-Hosari
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
| | - Sahar A Ali
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
| | - Shahenda Mahgoub
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
| | - Fatma A Moharram
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ein-Helwan, Cairo, Egypt
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Cásedas G, Les F, Choya-Foces C, Hugo M, López V. The Metabolite Urolithin-A Ameliorates Oxidative Stress in Neuro-2a Cells, Becoming a Potential Neuroprotective Agent. Antioxidants (Basel) 2020; 9:antiox9020177. [PMID: 32098107 PMCID: PMC7070385 DOI: 10.3390/antiox9020177] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 12/14/2022] Open
Abstract
Urolithin A is a metabolite generated from ellagic acid and ellagitannins by the intestinal microbiota after consumption of fruits such as pomegranates or strawberries. The objective of this study was to determine the cytoprotective capacity of this polyphenol in Neuro-2a cells subjected to oxidative stress, as well as its direct radical scavenging activity and properties as an inhibitor of oxidases. Cells treated with this compound and H2O2 showed a greater response to oxidative stress than cells only treated with H2O2, as mitochondrial activity (MTT assay), redox state (ROS formation, lipid peroxidation), and the activity of antioxidant enzymes (CAT: catalase, SOD: superoxide dismutase, GR: glutathione reductase, GPx: glutathione peroxidase) were significantly ameliorated; additionally, urolithin A enhanced the expression of cytoprotective peroxiredoxins 1 and 3. Urolithin A also acted as a direct radical scavenger, showing values of 13.2 μM Trolox Equivalents for Oxygen Radical Absorbance Capacity (ORAC) and 5.01 µM and 152.66 µM IC50 values for superoxide and 2,2-diphenyss1-picrylhydrazyl (DPPH) radicals, respectively. Finally, inhibition of oxidizing enzymes, such as monoamine oxidase A and tyrosinase, was also detected in a dose-dependent manner. The cytoprotective effects of urolithin A could be attributed to the improvement of the cellular antioxidant battery, but also to its role as a direct radical scavenger and enzyme inhibitor of oxidases.
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Affiliation(s)
- Guillermo Cásedas
- Facultad de Ciencias de la Salud, Universidad San Jorge, 50830 Villanueva de Gállego (Zaragoza), Spain; (G.C.); (F.L.)
| | - Francisco Les
- Facultad de Ciencias de la Salud, Universidad San Jorge, 50830 Villanueva de Gállego (Zaragoza), Spain; (G.C.); (F.L.)
- Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), 50059 Zaragoza, Spain
| | - Carmen Choya-Foces
- Unidad de Investigación, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Princesa (IIS-IP), E-28009 Madrid, Spain; (C.C.-F.); (M.H.)
| | - Martín Hugo
- Unidad de Investigación, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Princesa (IIS-IP), E-28009 Madrid, Spain; (C.C.-F.); (M.H.)
| | - Víctor López
- Facultad de Ciencias de la Salud, Universidad San Jorge, 50830 Villanueva de Gállego (Zaragoza), Spain; (G.C.); (F.L.)
- Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), 50059 Zaragoza, Spain
- Correspondence:
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Moharram FAE, Al-Gendy AA, El-Shenawy SM, Ibrahim BM, Zarka MA. Phenolic profile, anti-inflammatory, antinociceptive, anti-ulcerogenic and hepatoprotective activities of Pimenta racemosa leaves. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:208. [PMID: 29976187 PMCID: PMC6034294 DOI: 10.1186/s12906-018-2260-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 06/18/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND Pimenta racemosa tree has many traditional uses where its leaves are used as herbal tea for treatment of flatulence, gastric disorder, osteoarthritis, colds and fever in addition to its analgesic and anti-inflammatory activities. So, this study aimed to isolate phenolic constituents of 80% aqueous methanol extract (AME) of leaves and evaluate its biological activities. METHODS The defatted AME was chromatographed and structures of the isolated compounds were elucidated using UV, NMR spectroscopy and UPLC-ESI-MS analysis. Antioxidant activity was investigated using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity. Anti-inflammatory activity was evaluated using carrageenan - induced paw oedema, while antinociceptive activity was determined by chemical and thermal stimuli. Anti-ulcerogenic effect of AME against gastric damage induced by ethanol in Wister male albino rats was evaluated. Also, hepatoprotective activity was investigated through determination of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) following oral administration of paracetamol. Both of Anti-ulcerogenic and hepatoprotective activities (125, 250 and 500 mg/kg b.wt.) were supported by histopathological examinations. RESULTS Gallic acid (1), methyl gallate (2), avicularin (3), quercetin 3-O-β-D-arbinopyranoside (4), quercetin 3-O-β-D-glucopyranoside (5), quercetrin (6), cynaroside (7), strictinin (8), castalagin (9), grandinin (10) quercetin (11) and ellagic acid (12) were isolated. AME showed significant radical scavenging activity (SC50 = 4.6 μg/mL), promising anti-inflammatory effect through inhibition of oedema and antinociceptive activity by reduction in number of writhes after acetic acid injection and prolongation of reaction time towards the thermal stimulus. AME reduced the gastric mucosal lesions compared with ethanol control and ranitidine groups, ALT at the three doses and AST only at 125 and 250 mg/kg b.wt., when compared with paracetamol group. The results were confirmed by histopathological studies. CONCLUSION P. racemosa leaves are rich in phenolic compounds and showed significant biological activities.
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Affiliation(s)
| | - Amal Amin Al-Gendy
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig, 44519 Egypt
| | | | - Bassant M. Ibrahim
- Department of Pharmacology, National Research Center, Dokki, Cairo, 12622 Egypt
| | - Mohamed A. Zarka
- Department of Pharmacognosy, Faculty of Pharmacy, Modern Sciences and Arts University, 6 October City, Egypt
- Present Address: Department of Pharmacognosy, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
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9
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Zheng HC, Lu Y, Chen DF. Anticomplement compounds from Polygonum chinense. Bioorg Med Chem Lett 2018; 28:1495-1500. [DOI: 10.1016/j.bmcl.2018.03.079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/26/2018] [Accepted: 03/28/2018] [Indexed: 11/28/2022]
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10
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Xie W, Xing D, Sun H, Wang W, Ding Y, Du L. The Effects of Ananas comosus L. Leaves on Diabetic-Dyslipidemic Rats Induced by Alloxan and a High-Fat/High-Cholesterol Diet. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 33:95-105. [PMID: 15844837 DOI: 10.1142/s0192415x05002692] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study is to demonstrate the effects of Ananas comosus L. leaves on diabetic-dyslipidemic rats. Hypoglycemic and hypolipidemic activities of the ethanolic extract of Ananas comosus L. leaves (EEACL) were evaluated in normal and alloxan-induced diabetic rats by oral glucose tolerance test and an olive oil load test. Anti-diabetic, anti-hyperlipidemic and anti-oxidative activities of EEACL were also investigated in diabetic-dyslipidemic rats induced by alloxan and a high-fat/high-cholesterol diet. EEACL at the dose of 0.40 g/kg significantly inhibited the increase in blood glucose in diabetic rats in oral glucose tolerance test, but did not cause any hypoglycerimic activity in normal rats. It also significantly inhibited the increase in postprandial triglycerides (TG) levels in both normal and diabetic rats in olive oil load test. After 15 days of treatment of diabetic dyslipidemic rats, EEACL significantly decreased blood glucose (-51.0%, P<0.01), TG (-50.1%, P<0.01), TC (-23.3%, P<0.01), LDL-c (-47.9%, P<0.01) and glycated albumin (-25.4%, P<0.01) levels, significantly increased serum high-density lipoprotein cholesterol levels (66.2%, P<0.01) and prevented lower body weight of diabetes (11.8%, P<0.05), significantly lowered lipid peroxidation productions of blood (-27.8%, P<0.01), brain (-31.6%, P<0.05), liver (-44.5%, P<0.01) and kidneys (-72.2%, P<0.05) compared with those in untreated diabetic dyslipidemic rats. These data suggest that EEACL has anti-diabetic, anti-dyslipidemic and anti-oxidative activities, which may be developed into a new plant medicine for treatment of diabetes and its complications.
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Affiliation(s)
- Weidong Xie
- Institute of Medicinal Plant, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China
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Huang CS, Yin MC, Chiu LC. Antihyperglycemic and antioxidative potential of Psidium guajava fruit in streptozotocin-induced diabetic rats. Food Chem Toxicol 2011; 49:2189-95. [DOI: 10.1016/j.fct.2011.05.032] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 04/17/2011] [Accepted: 05/31/2011] [Indexed: 01/31/2023]
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Ndong M, Uehara M, Katsumata SI, Suzuki K. Effects of Oral Administration of Moringa oleifera Lam on Glucose Tolerance in Goto-Kakizaki and Wistar Rats. J Clin Biochem Nutr 2011; 40:229-33. [PMID: 18398501 PMCID: PMC2275769 DOI: 10.3164/jcbn.40.229] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Accepted: 12/27/2006] [Indexed: 11/22/2022] Open
Abstract
Medicinal plants constitute an important source of potential therapeutic agents for diabetes. In the present study, we investigated the effects of Moringa oleifera (MO) Lam, Moringacea, on glucose tolerance in Wistar rats and Goto-Kakizaki (GK) rats, modeled type 2 diabetes. Major polyphenols in MO powder were quercetin glucosides, rutin, kaempferol glycosides and chlorogenic acids by HPLC analysis. As the results of glucose tolerance test, MO significantly decreased the blood glucose at 20, 30, 45and 60 min for GK rats and at 10, 30 and 45 min for Wistar rats (p<0.05) compared to the both controls after glucose administration. The area under the curve of changes in the blood glucose was significantly higher in the GK control group than in the GK plus MO group (p<0.05) in the periods 30–60 min and 60–120 min. Furthermore, MO significantly decreased stomach emptying in GK rats (p<0.05). The results indicated that MO has an ameliorating effect for glucose intolerance, and the effect might be mediated by quercetin-3-glucoside and fiber contents in MO leaf powder. The action of MO was greater in GK rats than in Wistar rats.
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Affiliation(s)
- Moussa Ndong
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
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Abdel Bar FM, Zaghloul AM, Bachawal SV, Sylvester PW, Ahmad KF, El Sayed KA. Antiproliferative triterpenes from Melaleuca ericifolia. JOURNAL OF NATURAL PRODUCTS 2008; 71:1787-1790. [PMID: 18826277 DOI: 10.1021/np800360a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Three new 28-norlupane triterpenes, 28-norlup-20(29)-en-3beta-hydroxy-17beta-hydroperoxide (1), 28-norlup-20(29)-en-3beta-hydroxy-17alpha-hydroperoxide (2), and 20 S-17beta,29-epoxy-28-norlupan-3beta-ol (3), were isolated from the leaves of Melaleuca ericifolia along with eight known pentacyclic triterpenes. The structures of the new compounds were elucidated by spectroscopic methods including 1D and 2D NMR spectroscopy and mass spectrometry. The isolated triterpenes were evaluated for antiproliferative activity against the malignant +SA mammary epithelial cell line.
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Affiliation(s)
- Fatma M Abdel Bar
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 700 University Avenue, Monroe, Louisiana 71209, USA
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Hussein SAM, Hashim ANM, El-Sharawy RT, Seliem MA, Linscheid M, Lindequist U, Nawwar MAM. Ericifolin: an eugenol 5-O-galloylglucoside and other phenolics from Melaleuca ericifolia. PHYTOCHEMISTRY 2007; 68:1464-70. [PMID: 17449074 DOI: 10.1016/j.phytochem.2007.03.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2006] [Revised: 03/06/2007] [Accepted: 03/07/2007] [Indexed: 05/15/2023]
Abstract
Ericifolin, an eugenol 5-O-beta-(6'-O-galloylglucopyranoside) possessing the naturally unknown phenolic moiety, 5-hydroxyeugenol, together with the two new phenolics, 2-O-p-hydroxybenzoyl-6-O-galloyl-(alpha/beta)-4C1-glucopyranose and 3-methoxyellagic acid 4-O-rhamnopyranoside have been isolated from the antibacterial leaves extract of Melaleuca ericifolia. In addition, 19 known phenolics were also separated and characterized. All structures were elucidated on the basis of analysis of 1H, 13C NMR, HMQC, HMBC and FTMS spectral data.
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Affiliation(s)
- S A M Hussein
- Department of Phytochemistry and Chemosystematic, National Research Center, Dokki, Cairo, Egypt
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Terada S, Ito K, Yoshimura A, Noguchi N, Ishida T. The Constituents Relate to Anti-oxidative and α-Glucosidase Inhibitory Activities in Yacon Aerial Part Extract. YAKUGAKU ZASSHI 2006; 126:665-9. [PMID: 16880725 DOI: 10.1248/yakushi.126.665] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hot water extract of the aerial part of Yacon (Smallanthus sonchifolia, Compositae) showed potent free radical-scavenging activity and inhibitory effects on lipid peroxidation in rat brain homogenate. The most potent antioxidative activity focused on the 50% MeOH-eluted fraction on DIAION HP-20 column chromatography. The structure of the major component in the fraction was identified as 2,3,5-tricaffeoylaltraric acid (TCAA) based on spectroscopic evidence. The antioxidative activity of TCAA is superior to that of natural antioxidants such as (+/-)-catechin, alpha-tocopherol, and ellagic acid, and TCAA also showed selective maltase-inhibitory activity (IC(50) 49 microg/ml). As the hypoglycemic activity of Yacon extract was described in a previous report, the present results showing that the aerial part of Yacon has strong antioxidative activity may encourage its potential use as a food supplement to prevent type II diabetes.
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Affiliation(s)
- Sumio Terada
- Research Laboratory, Zenyaku Kogyo Co. Ltd., Tokyo, Japan.
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Kwak HM, Jeon SY, Sohng BH, Kim JG, Lee JM, Lee KB, Jeong HH, Hur JM, Kang YH, Song KS. β-Secretase(BACE1) inhibitors from pomegranate (Punica granatum) husk. Arch Pharm Res 2005; 28:1328-32. [PMID: 16392663 DOI: 10.1007/bf02977896] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In the course of screening for anti-dementia agents from natural products, two beta-secretase (BACE1) inhibitors were isolated from the husk of pomegranate (Punica granatum) by activity-guided purification. They were identified as ellagic acid and punicalagin with IC50 values of 3.9 x10(-6) and 4.1x10(-7) M and Ki values of 2.4x10(-5) and 5.9x10(-7) M, respectively. The compounds were non-competitive inhibitors with a substrate in the Dixon plot. Ellagic acid and punicalagin were less inhibitory to alpha-secretase (TACE) and other serine proteases such as chymotrypsin, trypsin, and elastase, thus indicating that they were relatively specific inhibitors of BACE1.
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Affiliation(s)
- Hye-Min Kwak
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
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Fuentes NL, Sagua H, Morales G, Borquez J, San Martin A, Soto J, Loyola LA. Experimental antihyperglycemic effect of diterpenoids of llaretaAzorella compacta (Umbelliferae) Phil in rats. Phytother Res 2005; 19:713-6. [PMID: 16177976 DOI: 10.1002/ptr.1740] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aqueous or ethanol infusions of Azorella compacta (llareta) in common with many other plants have been used as antidiabetic in the popular medicine in the altiplanic region of Chile. In order to determine if the diterpenic compounds chemically elucidated and isolated from this plant are responsible for this effect, streptozotocin diabetic rats (507 +/- 67 mg/mL glucose) were injected with two injections of diterpenic compounds mulinolic acid, azorellanol, and mulin-11,13-dien-20-oic acid at 180 mg/mL. Glycemia of animals treated with mulinolic acid and azorellanol was decreased to 243 +/- 2 and 247 +/- 14 mg/mL respectively, values very close to those reached by chlorpropamide injection used in controls. After 3 h treatment with mulin-11,13-dien-20-oic acid no effect was detected. The blood serum insulin in diabetic rats (146 +/- 58 pg/mL) was lower than in control rats. After injection of azorellanol, insulin was elevated to 247 +/- 23 pg/mL but with mulinolic acid, insulin was not changed. The antihyperglycemic effect of these compounds may explain the effectiveness of llareta in popular medicine. Because of the similarity to the hypoglycemic medication chlorpropamide, azorellanol could be acting on the beta cells of pancreatic islets, while mulinolic acid may act upon glucose utilization or production in the liver.
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Affiliation(s)
- Nelson L Fuentes
- Biomedical Department, University of Antofagasta, 02800 Universidad de Antofagasta Ave., Antofagasta, Chile
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