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Nur S, Setiawan H, Hanafi M, Elya B. Pharmacognostical and Phytochemical Studies and Biological Activity of Curculigo latifolia Plant Organs for Natural Skin-Whitening Compound Candidate. ScientificWorldJournal 2023; 2023:5785259. [PMID: 37829602 PMCID: PMC10567512 DOI: 10.1155/2023/5785259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 03/14/2023] [Accepted: 09/20/2023] [Indexed: 10/14/2023] Open
Abstract
Curculigo latifolia (family Amaryllidaceae) is used empirically for medicinal purposes. It is distributed throughout Asian countries, especially Indonesia. This study aimed at standardizing the C. latifolia plant, analyzing its phytochemical profile, and evaluating its pharmacological effects. The powder from each organ (root, stem, and leaves) was standardized organoleptically and microscopically. Samples were extracted by graded maceration using hexane, ethyl acetate, and ethanol. The extracts were determined for total phenolic content (TPC) and total flavonoid content (TFC). Antioxidant (radical scavenging and metal ion reduction) and antityrosinase activities were determined by spectrophotometric methods. Extracts were analysed for phytochemical profiles by LC-ESI-MS. The highest TPC and TFC were found in the ethanolic extract of the root organ (68.63 ± 2.97 mg GAE/g) and the ethyl acetate extract of the stem (14.33 ± 0.71 mg QE/g extract). High antioxidant activities were found in the ethanolic root extract (20.42 ± 0.33 µg/mL) and ethanolic stem extract (45.65 ± 0.77 µg/mL) by DPPH• and NO• assays, respectively. The ion reduction activity (by CUPRAC assay) was most significant in the ethyl acetate stem extract (390.42 ± 14.49 µmol GAEAC/g extract). Ethanolic root extract was the most active in inhibiting tyrosinase (IC50 value of 108.5 µg/mL). The correlation matrix between TPC and antioxidant activities showed a moderate to robust correlation, whereas the TPC and antityrosinase activity showed a robust correlation. The TFC and antioxidant or antityrosinase activities showed a weak to moderate correlation. The LC-ESI-MS data identified major phenols in the active extracts, including methyl 3-hydroxy-4-methoxy-benzoate, quercetin, 4-O-caffeoylquinic acid-1, and curculigoside. Overall, this study suggests that extracts from the C. latifolia plant offer potent antioxidant and antityrosinase activities, allowing them to be used as natural antioxidants and candidates for skin-lightening compounds.
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Affiliation(s)
- Syamsu Nur
- Department of Phytochemistry and Pharmacognosy, Faculty of Pharmacy, University of Indonesia, Depok 16424, Indonesia
- Department of Pharmaceutical Chemistry, Almarisah Madani University, Makassar 90245, Indonesia
| | - Heri Setiawan
- Department of Pharmacology, Faculty of Pharmacy, University of Indonesia, Depok 16424, Indonesia
| | - Muhammad Hanafi
- Indonesian Institute of Sciences (National Research and Innovation Agency (BRIN)), Jakarta 15314, Indonesia
- Department of Phytochemistry, Faculty of Pharmacy, Pancasila University, South Jakarta 12640, Indonesia
| | - Berna Elya
- Department of Phytochemistry and Pharmacognosy, Faculty of Pharmacy, University of Indonesia, Depok 16424, Indonesia
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Nur S, Setiawan H, Hanafi M, Elya B. Phytochemical composition, antioxidant, in vitro and in silico studies of active compounds of Curculigo latifolia extracts as promising elastase inhibitor. Saudi J Biol Sci 2023; 30:103716. [PMID: 37457237 PMCID: PMC10344807 DOI: 10.1016/j.sjbs.2023.103716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023] Open
Abstract
Curculigo latifolia is a plant in the Hypoxidaceae family commonly used in herbal medicine. The study objective was to evaluate the antioxidant and anti-elastase properties of C. latifolia extracts in vitro and silico as a candidate for antiaging active ingredients. This study identified secondary metabolites of the hexane (HE), ethyl acetate (EAE), and ethanol extracts (EE) from the root (R), stem (S), and leaf (L) organs by LC-ESI-MS and evaluated in vitro antioxidant and inhibitor elastase activity. An antioxidant evaluation was performed using ABTS, Beta Carotene Bleaching (BCB), and Ferric Reduction Antioxidant Power (FRAP). Evaluation of anti-elastase was carried out using elastase and followed by an in silico study of molecular docking using the target protein elastase (1B0F). Fifteen C. latifolia metabolites were identified in C. latifolia extracts, most of which were phenolic compounds. In antioxidant testing, REE, REAE, SEE, and SEAE extracts showed potent antioxidant activity based on the ABTS, BCB, and FRAP methods. In anti-elastase testing, it was found that SEE, REE, REAE, and RHE extracts gave powerful inhibition of elastase activity (in the ranges of 16.89 to 27.91 µg/mL). The in-silico study demonstrated the potential of the identified metabolites to bind to the target protein 1B0F involved in remodeling the skin aging process. This research concludes that the extracts from C. latifolia have the potential to serve as an active antiaging source.
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Affiliation(s)
- Syamsu Nur
- Department of Phytochemistry and Pharmacognosy, Faculty of Pharmacy, Universitas Indonesia, Depok 16424, Indonesia
- Department of Pharmaceutical Chemistry, Sekolah Tinggi Ilmu Farmasi Makassar, Makassar 90245, Indonesia
| | - Heri Setiawan
- Department of Pharmacology, Faculty of Pharmacy, Universitas Indonesia, Depok 16424, Indonesia
| | - Muhammad Hanafi
- Research Centre for Pharmaceutical Ingredient and Traditional Medicine, National Research and Innovation Agency (BRIN), Serpong 15314, Indonesia
- Department of Phytochemistry, Faculty of Pharmacy, Pancasila University, South Jakarta 12640, Indonesia
| | - Berna Elya
- Department of Phytochemistry and Pharmacognosy, Faculty of Pharmacy, Universitas Indonesia, Depok 16424, Indonesia
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Dzah CS, Asante-Donyinah D, Letsyo E, Dzikunoo J, Adams ZS. Dietary Polyphenols and Obesity: A Review of Polyphenol Effects on Lipid and Glucose Metabolism, Mitochondrial Homeostasis, and Starch Digestibility and Absorption. Plant Foods Hum Nutr 2023; 78:1-12. [PMID: 36459308 DOI: 10.1007/s11130-022-01034-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Obesity is a major global public health concern, limiting socio-economic development and human productivity. As studies focus on finding sustainable solutions to this challenge, polyphenols have shown promising results and have become a research focus. This is mainly because of associated lower risks of side effects with their use, compared to synthetic pharmaceuticals. In this study, the anti-obesity potentials of dietary polyphenols have been reviewed. Using a narrative approach, the biological activities of polyphenols and their influence on energy metabolism and mechanisms are discussed. Specifically, their roles in insulin-dependent glucose uptake, insulin sensitivity, lipid metabolism and storage in adipocytes, starch digestibility, and regulation of mitophagy and mitogenesis in muscle cells and adipocytes, were considered. After considering the major findings of many related studies, it was confirmed that polyphenols can prevent and ameliorate obesity by fighting insulin resistance (IR) induced by pro-inflammatory cytokines, scavenging reactive oxygen species (ROS) and limiting their effects, and by regulating the expression and/or activity of key enzymes along relevant pathways. More human studies are needed to reveal more about the anti-obesity effects of dietary polyphenols and their effective doses in humans.
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Affiliation(s)
- Courage Sedem Dzah
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, P.O. Box HP217, Ho, Volta Region, Ghana.
| | - David Asante-Donyinah
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, P.O. Box HP217, Ho, Volta Region, Ghana
| | - Emmanuel Letsyo
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, P.O. Box HP217, Ho, Volta Region, Ghana
| | - John Dzikunoo
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, P.O. Box HP217, Ho, Volta Region, Ghana
| | - Zeenatu Suglo Adams
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, P.O. Box HP217, Ho, Volta Region, Ghana
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Xu Y, Wen K, Liu A, Wang X, Xu H, Wen H. Efficacy of curculigoside in protecting against ischemic brain injury through regulation of oxidative stress and NF-κB and PI3K/Akt expression. J Ethnopharmacol 2023; 301:115804. [PMID: 36228892 DOI: 10.1016/j.jep.2022.115804] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The ancient Chinese medicine book "Huangdi Neijing" reports that "the brain is the sea of marrow" and that the kidney "mainly induces bones to produce marrow". Therefore, Chinese medicine has a "kidney-brain axis" theory, but supporting evidence is lacking. In this study, curculigoside, the main component of the kidney-tonifying drug Rhizoma Curculiginis, was used to explore whether a kidney-tonifying drug could regulate the pathological state of the brain. AIM OF THE STUDY To explore the efficacy of curculigoside in protecting against ischemic brain injury (IBI) through the regulation of oxidative stress and NF-κB and PI3K/Akt expression. MATERIALS AND METHODS Middle cerebral artery occlusion (MCAO) was used to induce IBI in rats, and curculigoside was administered. The degree of IBI, morphological changes and severity of nerve injury (using neurological severity scores; NSSs) in the rats were assessed. Enzyme-linked immunosorbent assays (ELISAs), Western blotting, and immunohistochemistry were used to evaluate changes in hydrogen peroxide (H2O2), nitric oxide (NO), malondialdehyde (MDA), TNF-α, IL-1β, catalase (CAT), superoxide dismutase (SOD), nitric oxide synthase (NOS), NF-κB, PI3K and Akt levels. RESULTS Curculigoside significantly alleviated behavioral deficits and reduced the degree of cerebral ischemia in the rats. After curculigoside treatment, the levels of H2O2, NO, MDA, NOS, iNOS, TNF-α, IL-1β, intercellular adhesion molecule-1 (ICAM-1) and NF-κB in the ischemic area of the brain were significantly reduced. The activities of CAT, SOD, PI3K and Akt were significantly increased. CONCLUSION Curculigoside is a potentially effective drug for the treatment of IBI.
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Affiliation(s)
- Yan Xu
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan, 450000, China; School of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, Henan, 450000, China
| | - Kuo Wen
- Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Aijun Liu
- Hongcheng Community Health Service Center, Nanguan District, Changchun, Jilin, 130028, China
| | - Xinna Wang
- Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Hanying Xu
- Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China
| | - Hongjuan Wen
- Changchun University of Chinese Medicine, Changchun, Jilin, 130117, China.
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Yin Y, Li D, Liu F, Wang X, Cui Y, Li S, Li X. The Ameliorating Effects of Apple Polyphenol Extract on High-Fat-Diet-Induced Hepatic Steatosis Are SIRT1-Dependent: Evidence from Hepatic-Specific SIRT1 Heterozygous Mutant C57BL/6 Mice. J Agric Food Chem 2022; 70:5579-5594. [PMID: 35485931 DOI: 10.1021/acs.jafc.2c01461] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Apple polyphenol extract (APE) has been reported to possess protective effects against hepatic steatosis. To explore whether APE-induced alleviation of hepatic steatosis is SIRT1-dependent, the present study was carried out using wild-type and hepatic SIRT1 heterozygous mutant (Sirt1+/-) C57BL/6 mice. On consideration of the sex disparity related to hepatic steatosis morbidity, both male and female mice were included in the study. Six to eight week old mice were fed a high-fat diet (HFD) and randomly assigned to one of the following groups: (1) wild-type mice (wt+HFD), (2) Sirt1+/- mice (Sirt1+/-+HFD), and (3) Sirt1+/- mice with 500 mg/(kg·bw·d) APE intragastric administration (Sirt1+/-+HAP). HFD-induced weight gain and triglyceride accumulation was more prominent in Sirt1+/- mice in comparison to wild-type mice. Following APE treatment, these effects were significantly reduced along with the alleviation of hepatic steatosis via upregulated expression of SIRT1 at the protein and mRNA levels in both male and female mice. However, APE differentially regulated the genes related to lipid metabolism (Lkb1, Ampk, Hsl, Srebp-1c, Abcg1, and Cd36) in a sex-specific manner. Moreover, APE treatment altered gut microbiota composition, with an increased relative abundance of Akkermansia and a decreased Firmicutes/Bacterodetes ratio. Thus, our study provided new evidence supporting our hypothesis that APE-induced alleviation of hepatic steatosis is SIRT1-dependent.
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Affiliation(s)
- Yan Yin
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Deming Li
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Fang Liu
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Xinjing Wang
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Yuan Cui
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Shilan Li
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
| | - Xinli Li
- School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
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Kan J, Hui Y, Xie W, Chen C, Liu Y, Jin C. Lily bulbs' polyphenols extract ameliorates oxidative stress and lipid accumulation in vitro and in vivo. J Sci Food Agric 2021; 101:5038-5048. [PMID: 33570774 DOI: 10.1002/jsfa.11148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 02/04/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Polyphenols have the potential to reduce the risk of many metabolic disorders. Lily bulbs are rich in polyphenols; however, their effects on lipid metabolism remain unclear. This study aimed to explore the effects of lily bulbs' polyphenols (LBPs) on oxidative stress and lipid metabolism. RESULTS A total of 14 polyphenolic compounds in LBPs were identified by high-performance liquid chromatography equipped with diode-array detection mass spectrometry. Total phenolic compound in LBPs was 53.76 ± 1.12 g kg-1 dry weight. In cellular experiments, LBPs attenuated the disruption of mitochondrial membrane potential, impeded reactive oxygen species production, alleviated oxidative stress, and reduced lipid accumulation in oleic acid induced HepG2 cells. In in vivo studies, LBPs significantly inhibited body weight gain, reduced lipid levels in serum and liver, and improved oxidative damage in a dose-dependent manner in mice fed a high-fat diet. Moreover, LBPs ameliorated hepatic steatosis and suppressed the expression of hepatic-lipogenesis-related genes (SREBP-1c, FAS, ACC1, and SCD-1) and promoted lipolysis genes (SRB1 and HL) and lipid oxidation genes (PPARα and CPT-1) in mice fed a high-fat diet. CONCLUSION It was concluded that LBPs are a potential complementary therapeutic alternative in the development of functional foods to curb obesity and obesity-related diseases, such as metabolic syndrome. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Juan Kan
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
| | - Yaoyao Hui
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
| | - Wangjing Xie
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
| | - Cuicui Chen
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
| | - Ying Liu
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
| | - ChangHai Jin
- College of Food Science and Engineering, Yangzhou University, Yangzhou, China
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Shi Y, Liu Z, Gai L, Gao Y, He Y, Liu C, Zhang C, Zhou G, Yuan D, Yuan C. The preventive effect of total saponins from Panax japonicus on inflammation and insulin resistance in adipose tissue of mice induced by a high-fat diet. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Wang T, Wang J, Hu X, Huang XJ, Chen GX. Current understanding of glucose transporter 4 expression and functional mechanisms. World J Biol Chem 2020; 11:76-98. [PMID: 33274014 PMCID: PMC7672939 DOI: 10.4331/wjbc.v11.i3.76] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/22/2020] [Accepted: 09/22/2020] [Indexed: 02/05/2023] Open
Abstract
Glucose is used aerobically and anaerobically to generate energy for cells. Glucose transporters (GLUTs) are transmembrane proteins that transport glucose across the cell membrane. Insulin promotes glucose utilization in part through promoting glucose entry into the skeletal and adipose tissues. This has been thought to be achieved through insulin-induced GLUT4 translocation from intracellular compartments to the cell membrane, which increases the overall rate of glucose flux into a cell. The insulin-induced GLUT4 translocation has been investigated extensively. Recently, significant progress has been made in our understanding of GLUT4 expression and translocation. Here, we summarized the methods and reagents used to determine the expression levels of Slc2a4 mRNA and GLUT4 protein, and GLUT4 translocation in the skeletal muscle, adipose tissues, heart and brain. Overall, a variety of methods such real-time polymerase chain reaction, immunohistochemistry, fluorescence microscopy, fusion proteins, stable cell line and transgenic animals have been used to answer particular questions related to GLUT4 system and insulin action. It seems that insulin-induced GLUT4 translocation can be observed in the heart and brain in addition to the skeletal muscle and adipocytes. Hormones other than insulin can induce GLUT4 translocation. Clearly, more studies of GLUT4 are warranted in the future to advance of our understanding of glucose homeostasis.
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Affiliation(s)
- Tiannan Wang
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
| | - Jing Wang
- College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, Hubei Province, China
| | - Xinge Hu
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
| | - Xian-Ju Huang
- College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, Hubei Province, China
| | - Guo-Xun Chen
- Department of Nutrition, The University of Tennessee, Knoxville, TN 37996, United States
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Donado-Pestana CM, Pessoa ÉVM, Rodrigues L, Rossi R, Moura MHC, Dos Santos-Donado PR, Castro É, Festuccia WT, Genovese MI. Polyphenols of cambuci (Campomanesia phaea (O. Berg.)) fruit ameliorate insulin resistance and hepatic steatosis in obese mice. Food Chem 2021; 340:128169. [PMID: 33007695 DOI: 10.1016/j.foodchem.2020.128169] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 08/14/2020] [Accepted: 09/20/2020] [Indexed: 12/17/2022]
Abstract
Polyphenols from cambuci (CBC) (Campomanesia phaea (O. Berg.)), a Brazilian native fruit, were investigated on therapeutic actions mitigating insulin resistance and hepatic steatosis in high-fat-sucrose diet (HFS) induced obese mice. For this, C57BL/6J mice fed with a obesogenic and diabetogenic HFS diet were administered with either water or two CBC doses (36 or 74 mg gallic acid equivalent (GAE)/kg body weight) by gavage from week 6 to week 14 (end-point) of HFS feeding. CBC reduced body weight gain, inflammation, hepatic steatosis, hyperglycemia, glucose intolerance, and insulin resistance in liver and skeletal muscle of obese mice, and such effects were associated with activation of Akt and AMPK in these tissues. In conclusion, polyphenols from CBC show important therapeutic actions ameliorating obesity-associated complications.
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Kan J, Chen C, Huo T, Xie W, Hui Y, Liu J, Jin C. Polyphenolic-enriched peach peels extract regulates lipid metabolism and improves the gut microbiota composition in high fat diet-fed mice. J Funct Foods 2020; 72:104082. [DOI: 10.1016/j.jff.2020.104082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Shakoor H, Abdelfattah F, Albadi K, Adib M, Kizhakkayil J, Platat C. Inhibition of Digestive Enzyme and Stimulation of Human Liver Cells (HepG2) Glucose Uptake by Date Seeds Extract. Evid Based Complement Alternat Med 2020; 2020:4290702. [PMID: 32802126 DOI: 10.1155/2020/4290702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/06/2020] [Indexed: 12/27/2022]
Abstract
Type 2 diabetes mellitus is increasing worldwide, and the United Arab Emirates is presenting one of the world's highest prevalence rates. Dietary polyphenols exert an antidiabetic effect by modulating carbohydrates digestion and cellular glucose uptake. Due to their particularly high content in polyphenols, date seeds represent a potential antidiabetic agent. This study aims to determine if date seed polyphenols inhibit the activity of the enzymes (α-amylase and α-glucosidase), responsible for the digestion of carbohydrates and modulating the glucose uptake by human liver cells. In vitro activity of the intestinal α-glucosidase, pancreatic α-amylase, the glucose uptake by HepG2 cells, and the expression of GLUT4 and AMPK analyzed by western blotting (with and without date seeds extract). Our result showed that the maximum enzymes inhibition was obtained with 400 μg/mL and 900 μg/mL DSE for α-amylase and α-glucosidase, respectively. The HepG2 cell viability significantly decreased up to 80% at 4000 μg/mL DSE. The expression of GLUT4 was higher at 100 μg/mL DSE (with insulin and without insulin). However, the expressions of P-AMPK and AMPK were increased by DSE, mainly in a non-insulin-dependent manner. Therefore, DSE, by inhibiting carbohydrate digestion and stimulating glucose uptake by HepG2, can potentially demonstrate the therapeutic potential for diabetes management.
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Tan YQ, Li Q, Wang L, Chiu-Leung LC, Leung LK. The livestock growth-promoter zeranol facilitates GLUT4 translocation in 3T3 L1 adipocytes. Chemosphere 2020; 253:126772. [PMID: 32464760 DOI: 10.1016/j.chemosphere.2020.126772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/23/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Zeranol is an approved but controversial growth-promoting agent for livestock in North America. It is a mycotoxin metabolite secreted by the Fusarium family fungi. The regulatory bodies in this region have established the acceptable daily intake and exposure below the level would not significantly increase the health risk for humans. However, their European counterparts have yet to establish an acceptable level and do not permit the use of this agent in farm animals. Given the growth-promoting ability of zeranol, its effect on energy metabolism was investigated in the current study. Our results indicated that zeranol could induce glucose transporter type 4 (GLUT4) expression in 3T3 L1 cells at 10 μM and initiate the translocation of the glucose transporter to the membrane as assayed by confocal microscopy. The translocation was likely triggered by the increase of GLUT4 and p-Akt. The insulin signal transduction pathway of glucose translocation was analyzed by Western blot analysis. Since no increase in the phosphorylated insulin receptor substrate in zeranol-treated cells was evidenced, the increased p-Akt and GLUT4 amount should be the mechanism dictating the GLUT4 translocation. In summary, this study showed that zeranol could perturb glucose metabolism in differentiated 3T3 L1 adipocytes. Determining the growth-promoting mechanism is crucial to uncover an accepted alternative to the general public.
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Affiliation(s)
- Yan Qin Tan
- Food and Nutritional Sciences Programme, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Qing Li
- Department of Biochemistry, School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Lin Wang
- Cell and Molecular Biology Programme, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Leo C Chiu-Leung
- Marine Science, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Lai K Leung
- Food and Nutritional Sciences Programme, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong; Department of Biochemistry, School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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Tan S, Xu J, Lai A, Cui R, Bai R, Li S, Liang W, Zhang G, Jiang S, Liu S, Zheng M, Wang W. Curculigoside exerts significant anti‑arthritic effects in vivo and in vitro via regulation of the JAK/STAT/NF‑κB signaling pathway. Mol Med Rep 2019; 19:2057-2064. [PMID: 30664158 PMCID: PMC6390071 DOI: 10.3892/mmr.2019.9854] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 11/02/2018] [Indexed: 01/02/2023] Open
Abstract
The present study aimed to investigate the anti-arthritic effects of curculigoside isolated from the rhizome of Curculigo orchioides Gaertn in vivo and in vitro, as well as to determine the potential underlying mechanisms. A rat model of arthritis was induced with type II collagen. Arthritic rats were treated with curculigoside (50 mg/kg) and blood samples were collected to determine serum levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, IL-10, IL-12 and IL-17A. Furthermore, indices of the thymus and spleen were determined. The anti-proliferative effects of curculigoside were detected with Cell Counting kit-8 assays in rheumatoid arthritis-derived fibroblast-like synoviocyte MH7A cells. In addition, expression levels of Janus kinase (JAK)1, JAK3, signal transducer and activator of transcription (STAT)3, nuclear factor (NF)-κB p65 and its inhibitor (IκB) were determined by western blotting. The results revealed that curculigoside inhibited paw swelling and arthritis scores in type II collagen-induced arthritic (CIA) rats. Additionally, curculigoside decreased serum levels of TNF-α, IL-1β, IL-6, IL-10, IL-12 and IL-17A in CIA rats. Curculigoside also significantly inhibited MH7A cell proliferation in a time and concentration-dependent manner. Furthermore, treatment downregulated the expression of JAK1, JAK3 and STAT3, and upregulated cytosolic nuclear factor (NF)-κB p65 and IκB. In conclusion, the results of the present study indicated that curculigoside exhibited significant anti-arthritic effects in vivo and in vitro, and the molecular mechanism may be associated with the JAK/STAT/NF-κB signaling pathway.
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Affiliation(s)
- Shirui Tan
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650032, P.R. China
| | - Jian Xu
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Aiyun Lai
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Ruomei Cui
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Ru Bai
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Shu Li
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Wei Liang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Guofang Zhang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Shaoquan Jiang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Shuang Liu
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Mai Zheng
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Wei Wang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
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14
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Wu D, Wang H, Tan J, Wang C, Lin H, Zhu H, Liu J, Li P, Yin J. Pharmacokinetic and Metabolism Studies of Curculigoside C by UPLC-MS/MS and UPLC-QTOF-MS. Molecules 2018; 24:E21. [PMID: 30577595 DOI: 10.3390/molecules24010021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/11/2018] [Accepted: 12/16/2018] [Indexed: 01/02/2023] Open
Abstract
Pharmacokinetic and metabolism studies were carried out on curculigoside C (CC), a natural product with good antioxidant and neuroprotective effects, with the purpose of investigating the effects of the hydroxyl group at C-3' in curculigoside. A rapid and sensitive method with UPLC-MS was developed and fully validated for the first time in the pharmacokinetic analysis for quantification of CC in rat plasma. The assay was linear (R² > 0.9984) over the concentration range of 1⁻2500 ng/mL, with the lower limit of quantification (LLOQ) being 1 ng/mL. The intra-day and inter-day precision (expressed as relative standard deviation, RSD) ranged from 4.10% to 5.51% and 5.24% to 6.81%, respectively. The accuracy (relative error, RE) ranged from -3.28% to 0.56% and -5.83% to -1.44%, respectively. The recoveries ranged from 92.14% to 95.22%. This method was then applied to a pharmacokinetic study of rats after intragastric administration of 15, 30 and 60 mg/kg CC. The results revealed that CC exhibited rapid oral absorption (Tmax = 0.106 h, 0.111 h, and 0.111 h, respectively), high elimination (t1/2 = 2.022 h, 2.061 h, and 2.048 h, respectively) and low absolute bioavailability (2.01, 2.13, and 2.39%, respectively). Furthermore, an investigation on the metabolism of CC was performed by UPLC-QTOF-MSE. Twelve metabolites of CC from plasma, bile, urine and faeces of rats were confirmed. The main metabolic pathways of CC, which involve dehydration, glucosylation, desaturation, formylation, cysteine conjugation, demethylation and sulfonation, were profiled. In conclusion, this research has developed a sensitive quantitative method and demonstrated the metabolism of CC in vivo.
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