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Akbar A, Ijaz MU. Pharmacotherapeutic potential of ginkgetin against polystyrene microplastics-instigated testicular toxicity in rats: A biochemical, spermatological, and histopathological assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:9031-9044. [PMID: 38182957 DOI: 10.1007/s11356-023-31662-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024]
Abstract
Polystyrene microplastics (PSMPs) have emerged as a ubiquitous environmental toxicant that affects different organs including testes. Ginkgetin (GNG) is a biflavonoid that shows antioxidant properties. The current research was undertaken to evaluate the ameliorative potential of GNG against PSMPs-instigated testicular damages. Forty-eight albino rats (male) were randomly divided into 4 equal groups: control, PSMPs-treated group (0.01 mgkg-1), GNG + PSMPs-exposed group (25 mgkg-1 + 0.01 mgkg-1), and only GNG-supplemented group (25 mgkg-1). After 56 days of treatment, it was revealed that PSMPs significantly reduced the activity of glutathione peroxidase (GPx), catalase (CAT), superoxide dismutase (SOD), and glutathione reductase (GSR), while concurrently augmented the levels of lipid peroxidation marker, i.e., malondialdehyde (MDA) along with reactive oxygen species (ROS). Rats administered with PSMPs showed a significant reduction in the spermatogenic indices (sperm count, viability, and motility), HOS coiled tail sperm along with increased sperm structural deformities, i.e., tail, head, and mid-piece. Additionally, PSMPs exposure decreased the levels of testosterone, luteinizing (LH), and follicle-stimulating hormones (FSH). Besides, administration of PSMPs reduced the steroidogenic enzymes (13β-HSD, StAR, and 17β-HSD) and Bcl-2 expression, while augmented the caspase-3 and Bax expression. PSMPs also elevated the levels of inflammatory markers (IL-6, IL-1β, TNF-α, and NF-κB) and activity of COX-2 in the testes. Furthermore, PSMPs treatment induced various histopathological damages in the testes of rats. Therefore, findings of the current study suggested that GNG effectively mitigated the PSMPs-induced testicular toxicity owing to its chemoprotective potential possibly through its anti-inflammatory, antioxidant, anti-apoptotic, and androgenic properties.
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Affiliation(s)
- Ali Akbar
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan.
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Hu Y, Fu Z, Yang S, Zhou Y, Zhu H, Zhu Y, Zhou J, Lin K, Xu Y. A multifunctional quercetin/polycaprolactone electrospun fibrous membrane for periodontal bone regeneration. Mater Today Bio 2024; 24:100906. [PMID: 38226016 PMCID: PMC10788537 DOI: 10.1016/j.mtbio.2023.100906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 12/03/2023] [Accepted: 12/06/2023] [Indexed: 01/17/2024] Open
Abstract
Image 1.
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Affiliation(s)
- Yue Hu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Zeyu Fu
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Oral and Cranio-maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, China
| | - Shiyuan Yang
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yuning Zhou
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Huimin Zhu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yan Zhu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jia Zhou
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
| | - Kaili Lin
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
- Department of Oral and Cranio-maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, China
| | - Yuanjin Xu
- Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai, China
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Inarejos-Garcia AM, Heil J, Guilera Bermell S, Morlock GE. Stability of Flavan-3-ols, Theaflavins, and Methylxanthines in 30 Industrial Green, Black, and White Tea ( Camellia sinensis L.) Extracts Characterized via Liquid Chromatography Techniques. Antioxidants (Basel) 2023; 12:2121. [PMID: 38136240 PMCID: PMC10740512 DOI: 10.3390/antiox12122121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Commercially available tea extracts for dietary supplements and nutraceuticals are standardized to characteristic components of Camellia sinensis L., such as epigallocatechin gallate (EGCG) and total catechins or polyphenols. However, since most commercial tea extracts are highly concentrated into only one molecule such as EGCG, the comparatively less stable catechin, the oxidative stability of the extract during the 24-month shelf life was questioned. It was hypothesized that the overall oxidative stability is reduced for highly purified/concentrated tea extracts due to the absence of other natural antioxidants stabilizing the complex mixture. Via liquid chromatographic analysis, the individual chromatographic profiles of 30 commercial white, green, and black tea extracts were evaluated and compared regarding oxidative stability and functional properties. The contents of bioactive flavan-3-ols, theaflavins, and methylxanthines differed much from what was claimed by the suppliers. At the end of the product shelf life, most of the commercial green and black tea extracts showed a decrease in the flavan-3-ol content, the main bioactive components of tea. A high EGCG content to the detriment of other possibly stabilizing flavan-3-ols or antioxidants in tea was found to explain the lower oxidative stability of such tea extract products. A natural overall composition of molecular structures was found to be superior to a strong enrichment in just one molecule.
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Affiliation(s)
| | - Julia Heil
- Institute of Nutritional Science, Chair of Food Science and TransMIT Center for Effect-Directed Analysis, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | | | - Gertrud E. Morlock
- Institute of Nutritional Science, Chair of Food Science and TransMIT Center for Effect-Directed Analysis, Justus Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
- Center for Sustainable Food Systems, Justus Liebig University Giessen, Senckenbergstr. 3, 35390 Giessen, Germany
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Ijaz MU, Qamer M, Hamza A, Ahmed H, Afsar T, Abulmeaty M, Ayub A, Razak S. Sciadopitysin mitigates spermatological and testicular damage instigated by paraquat administration in male albino rats. Sci Rep 2023; 13:19753. [PMID: 37957289 PMCID: PMC10643627 DOI: 10.1038/s41598-023-46898-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 11/07/2023] [Indexed: 11/15/2023] Open
Abstract
Paraquat (PQ) is a herbicide that has ability to induce testicular toxicity by producing reactive oxygen species (ROS). Sciadopitysin (SPS) is a promising flavonoid that displays multiple pharmacological properties i.e., anti-inflammatory, anti-oxidant and anti-apoptotic. Therefore, the present study was designed to evaluate the mitigative role of SPS against PQ induced testicular toxicity in male rats. The experiment was performed on male albino rats (n = 48) that were divided into 4 groups. The group-1 was control group. Group-2 was administrated orally with PQ (5 mg/kg). Group-3 was administrated orally with PQ (5 mg/kg) and SPS (2 mg/kg). Group-4 was supplemented with SPS (2 mg/kg) through oral gavage. The experiment was conducted for 56 days. The exposure to PQ significantly lowered the activities of catalase (CAT), glutathione reductase (GSR), superoxide dismutase (SOD) as well as glutathione peroxidase (GPx). Whereas, a substantial increase was observed in dead sperms number, abnormalities in the tail, head as well as midpiece of sperms in PQ intoxicated rats. Moreover, a significant increase in the level of ROS and malondialdehyde (MDA) was noticed in PQ administrated group. Furthermore, steroidogenic enzymes expression was significantly decreased in PQ-intoxicated group, whereas the level of inflammatory markers was increased in PQ administrated rats. Besides, the expression of apoptotic markers was significantly escalated in PQ exposed rats, whereas the expression of anti-apoptotic markers was considerably reduced. A significant reduction in hormonal level was also noticed in the rats that were administrated with PQ. Moreover, the histopathological examination revealed that PQ significantly damaged the testicles. However, the supplementation of SPS with PQ significantly reduced the adverse effects of PQ in the testes of albino rats. Therefore, the current investigation demonstrated that SPS possesses a significant potential to avert PQ-induced testicular dysfunction due to its anti-apoptotic, androgenic, anti-oxidant and anti-inflammatory nature.
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Affiliation(s)
- Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, 38040, Pakistan.
| | - Mohammad Qamer
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Ali Hamza
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Hussain Ahmed
- Department of Zoology, The University of Buner, Buner, Khyber Pakhtunkhwa, Pakistan
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, 11433, Riyadh, Saudi Arabia
| | - Mahmoud Abulmeaty
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, 11433, Riyadh, Saudi Arabia
| | - Arusha Ayub
- Department of Medicine, School of Health Sciences, University of Georgia, Tbilisi, GA, Georgia
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, 11433, Riyadh, Saudi Arabia.
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Berga M, Logviss K, Lauberte L, Paulausks A, Mohylyuk V. Flavonoids in the Spotlight: Bridging the Gap between Physicochemical Properties and Formulation Strategies. Pharmaceuticals (Basel) 2023; 16:1407. [PMID: 37895878 PMCID: PMC10610233 DOI: 10.3390/ph16101407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/27/2023] [Accepted: 09/30/2023] [Indexed: 10/29/2023] Open
Abstract
Flavonoids are hydroxylated polyphenols that are widely distributed in plants with diverse health benefits. Despite their popularity, the bioavailability of flavonoids is often overlooked, impacting their efficacy and the comparison of products. The study discusses the bioavailability-related physicochemical properties of flavonoids, with a focus on the poorly soluble compounds commonly found in dietary supplements and herbal products. This review sums up the values of pKa, log P, solubility, permeability, and melting temperature of flavonoids. Experimental and calculated data were compiled for various flavonoid subclasses, revealing variations in their physicochemical properties. The investigation highlights the challenges posed by poorly soluble flavonoids and underscores the need for enabling formulation approaches to enhance their bioavailability and therapeutic potential. Compared to aglycones, flavonoid glycosides (with sugar moieties) tend to be more hydrophilic. Most of the reviewed aglycones and glycosides exhibit relatively low log P and high melting points, making them "brick dust" candidates. To improve solubility and absorption, strategies like size reduction, the potential use of solid dispersions and carriers, as well as lipid-based formulations have been discussed.
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Affiliation(s)
| | | | | | | | - Valentyn Mohylyuk
- Laboratory of Finished Dosage Forms, Faculty of Pharmacy, Riga Stradiņš University, LV-1007 Riga, Latvia
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Fisetin and Robinetin antiradical activity under solvent effect: density functional theory study. J Mol Model 2022; 28:240. [PMID: 35913682 DOI: 10.1007/s00894-022-05223-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 07/13/2022] [Indexed: 10/16/2022]
Abstract
The structural and antioxidant activity of two flavonols, namely, Fisetin and Robinetin, have been investigated employing the density functional theory (DFT) using B3LYP functional and 6-311++G (d, p) basis set. The calculations were performed in the gas phase and under the solvent effect of water, dimethylsulfoxide (DMSO), methanol, and benzene. The Hydrogen-Atom Transfer (HAT), single Electron Transfer Followed by Proton Transfer (SET-PT), and sequential Proton Loss Electron Transfer (SPLET) mechanisms were investigated to rationalize the radical scavenging capacities and to identify the favored antioxidant mechanism. Hence, the bond dissociation enthalpies (BDE) ionization potential (IP), IE, proton dissociation enthalpy (PDE), proton affinity (PA), and electron Transfer enthalpy (ETE) related to each mechanism were reported and discussed in function of the solvent effect. For both flavonols, the results showed that 4'-OH hydroxyl is the preferred active site following the trend 4'-OH > 3'-OH > 3-OH > (5'-OH) > 7-OH. Besides, the HAT mechanism is energetically the most favored pathway. The energetically favored solvents follow the trends water > DMSO > benzene > methanol and benzene > DMSO > methanol > water, for Fisetin and Robinetin, respectively.
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Phukan K, Devi R, Chowdhury D. Insights into Anti-Inflammatory Activity and Internalization Pathway of Onion Peel-Derived Gold Nano Bioconjugates in RAW 264.7 Macrophages. ACS OMEGA 2022; 7:7606-7615. [PMID: 35284751 PMCID: PMC8908513 DOI: 10.1021/acsomega.1c06131] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/31/2021] [Indexed: 05/28/2023]
Abstract
Green synthesis of nanoparticles plays an important role in their efficient therapeutic effects in various biomedical applications. Here, we prepared gold nano bioconjugates (GNBCs) from the ethyl acetate fraction of onion peels and investigated their anti-inflammatory activity in lipopolysaccharide-stimulated RAW 264.7 macrophages. The GNBCs were characterized by UV-visible spectroscopy, dynamic light scattering, and transmission electron microscopy. Comparative studies have been conducted among GNBCs, fractionate alone [onion peel drug (OPD)], and the standard drug dexamethasone in various anti-inflammatory assays. It was observed that GNBCs showed comparatively good therapeutic efficacy than the fractionate alone. At the lowest 10 μg/mL concentration, the GNBC and OPD exhibited 70.86 and 91.98% of reactive oxygen species production, 10.88 and 20.97 ng/μL of nitrite production, 337 and 378 pg/mL of TNF-α production, 27.1 and 30.64 pg/mL of IL-6 production, respectively, by maintaining a satisfactory cell viability. Moreover, to understand the mechanistic pathway of GNBCs in their entry into the macrophages, their localization, and duration, uptake studies have been performed where a caveolar-mediated endocytosis pathway is found to be prominent. Hence, this study will lead to the development of cheap, green synthesis of nano bioconjugates and their role in inflammation.
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Affiliation(s)
- Kabyashree Phukan
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, Assam, India
| | - Rajlakshmi Devi
- Life
Sciences Division, Institute of Advanced
Study in Science and Technology, Paschim
Boragaon, Garchuk, Guwahati 781035 Assam, India
| | - Devasish Chowdhury
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, Assam, India
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Leite NB, Martins DB, Alvares DS, Cabrera MPDS. Quercetin induces lipid domain-dependent permeability. Chem Phys Lipids 2021; 242:105160. [PMID: 34808124 DOI: 10.1016/j.chemphyslip.2021.105160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 01/08/2023]
Abstract
Quercetin is a polyphenolic molecule with a broad spectrum of biological activities derived from its antioxidant property. Its mechanism of action has been explained by its binding and/or interference with enzymes, receptors, transporters and signal transduction systems. Since these important mechanisms generally occur in membrane environments, within and through lipid bilayers, investigating the biophysical properties related to the diversity of lipid compositions of cell membranes may be the key to understanding the role of cell membrane in these processes. In this work, we explored the interaction of quercetin with model membranes of different lipid compositions to access the importance of lipid phases and bilayer homogeneity to the action of quercetin and contribute to the understanding of quercetin multiple activities. Analysis of the influence of quercetin on the morphology and permeability of GUVs, the rigidity of LUVs and affinity to these vesicles showed that quercetin strongly partitions to the more homogeneous environments, but significantly permeates and modifies the more heterogeneous where liquid-disordered, liquid-ordered and solid phases coexist. Our findings support the condensing effect of quercetin, which is observed through a significant rigidifying of bilayers containing 40% cholesterol, but much less evidenced when it is reduced to 20% or in its absence. Nevertheless, the presence of sphingomyelin in the ternary system led to a more heterogeneous bilayer with the formation of micrometric and probably also nanometric domains, which coalesce in the presence of quercetin. This observation together with increased permeability points to an insertion effect.
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Affiliation(s)
- Natália Bueno Leite
- Departamento de Química e Ciências Ambientais, Universidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas (IBILCE), Câmpus São José do Rio Preto, SP, Brazil.
| | - Danubia Batista Martins
- Departamentode Física, Universidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas (IBILCE), Câmpus São José do Rio Preto, SP, Brazil
| | - Dayane S Alvares
- Departamentode Física, Universidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas (IBILCE), Câmpus São José do Rio Preto, SP, Brazil
| | - Marcia Perez Dos Santos Cabrera
- Departamento de Química e Ciências Ambientais, Universidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas (IBILCE), Câmpus São José do Rio Preto, SP, Brazil; Departamentode Física, Universidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas (IBILCE), Câmpus São José do Rio Preto, SP, Brazil
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Phukan K, Devi R, Chowdhury D. Green Synthesis of Gold Nano-bioconjugates from Onion Peel Extract and Evaluation of Their Antioxidant, Anti-inflammatory, and Cytotoxic Studies. ACS OMEGA 2021; 6:17811-17823. [PMID: 34308016 PMCID: PMC8296016 DOI: 10.1021/acsomega.1c00861] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/10/2021] [Indexed: 05/04/2023]
Abstract
Plant secondary metabolites such as flavonoids demonstrate high degrees of antioxidant, anti-inflammatory, and anticancer activities. Among flavonoids, quercetin plays an important role in inflammation by downregulating the level of various cytokines. Thereby, in this work, onion (Allium cepa) peel was successfully utilized for the synthesis of gold nano-bioconjugates acting as a natural therapeutic drug. In this process, crude onion peel extract was first divided into different fractionates, namely, ethyl acetate, butanol, methanol, and water, and they were subjected to various preliminary studies of antioxidant activities. The ethyl acetate fractionate shows high antioxidant activities in all the assays. The bioactive components were identified and found to contain a high amount of quercetin as confirmed by liquid chromatography with tandem mass spectrometry and high-performance liquid chromatogrpahy. Three gold nano-bioconjugates were prepared with different concentrations of the ethyl acetate fractionate. Various biochemical anti-inflammatory assays were carried out and compared with the active ethyl acetate fraction of the onion peel drug (OPD). The cytotoxicity of the nano-bioconjugate system and the OPD was checked in the myoblast L6 cell line from skeletal muscle tissues to evaluate the toxicity. All the three nano-bioconjugates A, B, and E demonstrated high percentages of cell viability, viz., 73.07, 72.3, and 69.15%, respectively, at their highest concentration of 200 μg/mL. The OPD also showed 88.56% cell viability with no toxic effects in the myoblast L6 cell line from skeletal muscle tissues. The reactive oxygen species reduction of nano-bioconjugate B showed a marked reduction of 76.77% at a maximum concentration of 200 μg/mL, whereas the OPD showed 68.17%. Hence, through this work, a cheap source of nano-bioconjugates is developed, which can act as a potent antioxidant and anti-inflammatory agent and are more active in comparison to the OPD alone.
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Affiliation(s)
- Kabyashree Phukan
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Rajlakshmi Devi
- Life
Sciences Division, Institute of Advanced
Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
| | - Devasish Chowdhury
- Material
Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati 781035, India
- . Tel.: +91 361 2912073. Fax: +91 361 2279909
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Karimi A, Naeini F, Asghari Azar V, Hasanzadeh M, Ostadrahimi A, Niazkar HR, Mobasseri M, Tutunchi H. A comprehensive systematic review of the therapeutic effects and mechanisms of action of quercetin in sepsis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 86:153567. [PMID: 33940332 DOI: 10.1016/j.phymed.2021.153567] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Sepsis is a life-threatening condition caused by a dysregulated host response to infection. Several studies have indicated that flavonoids exhibit a wide variety of biological actions including free radical scavenging and antioxidant activities. Quercetin, one of the most extensively distributed flavonoids in the vegetables and fruits, presents various biological activities including modulation of oxidative stress, anti-infectious, anti-inflammatory, and neuroprotective activities. METHODS The present systematic review was conducted according to the guidelines of the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) statements. We searched Web of Sciences, Google Scholar, PubMed, Scopus, and Embase databases up to February 2021 by using the relevant keywords. RESULTS Out of 672 records screened, 35 articles met the study criteria. The evidence reviewed here indicates that quercetin supplementation may exert beneficial effects on sepsis by attenuating inflammation and oxidative stress, downregulating the mRNA expression of toll-like receptors (TLRs), modulating the immune response, and alleviating sepsis-related organ dysfunctions. CONCLUSION Due to the promising therapeutic effects of quercetin on sepsis complications and the lack of clinical trials in this regard, future human randomized clinical trials are warranted.
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Affiliation(s)
- Arash Karimi
- Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition & Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Naeini
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Science, Tehran, Iran
| | - Vahid Asghari Azar
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Malihe Hasanzadeh
- Department of Biology, Ardabil Branch Islamic Azad University, Ardabil, Iran
| | - Alireza Ostadrahimi
- Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition & Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Reza Niazkar
- Student Research Committee, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Majid Mobasseri
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Helda Tutunchi
- Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition & Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran; Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Structure functionality relationship of flavonoids (myricetin, morin, taxifolin and 3′,4′-dihydroxyflavone). A computational study via the cupric ion probe. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Biela M, Rimarčík J, Senajová E, Kleinová A, Klein E. Antioxidant action of deprotonated flavonoids: Thermodynamics of sequential proton-loss electron-transfer. PHYTOCHEMISTRY 2020; 180:112528. [PMID: 33022536 DOI: 10.1016/j.phytochem.2020.112528] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/21/2020] [Accepted: 09/22/2020] [Indexed: 05/25/2023]
Abstract
Despite the intensive research on radical scavenging action of flavonoids, a systematic study of the thermochemistry for their mono-deprotonated species in aqueous solution is still missing. In this work, reaction enthalpies related to Sequential Proton-Loss Electron-Transfer (SPLET) mechanism were theoretically investigated for all mono-deprotonated forms of nine flavonoids: apigenin, luteolin, fisetin, kaempferol, quercetin, taxifolin, tricetin, tricin and cyanidin. Differences in reaction enthalpies of the first and the second deprotonation can be lower than 10 kJ mol-1, when two successive deprotonations occur in different aromatic rings of the molecule. For neutral flavonoids, thermodynamically preferred deprotonation sites are 4'-OH and 7-OH groups. In cyanidin (cation in native form), preferred second deprotonation site is 5-OH group. In the case of the formation of the preferred dianions, reaction enthalpies of the second proton loss are not affected by the structural distinctions between the flavonoids. In aqueous solution, deprotonated flavonoids show higher tendency to enter SPLET mechanism in comparison to Hydrogen Atom Transfer (HAT) or electron transfer.
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Affiliation(s)
- Monika Biela
- Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Ján Rimarčík
- Department of Chemistry, University of SS. Cyril and Methodius, J. Herdu 2, SK-917 01, Trnava, Slovakia
| | - Erika Senajová
- Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Andrea Kleinová
- Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia
| | - Erik Klein
- Institute of Physical Chemistry and Chemical Physics, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37, Bratislava, Slovakia.
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13
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Kumar A, Sharma M, Chaubey SN, Kumar A. Homology modeling and molecular dynamics based insights into Chalcone synthase and Chalcone isomerase in Phyllanthus emblica L. 3 Biotech 2020; 10:373. [PMID: 32832333 DOI: 10.1007/s13205-020-02367-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Chalcone synthase (CHS) and chalcone isomerase (CHI) plays a major role in the biosynthesis of flavonoid in plants. In this study, we made extensive bioinformatics analysis to gain functional and structural insight into PeCHS and PeCHI proteins. The phylogenetic distribution of PeCHS and PeCHI genes encoding proteins demonstrated the close evolutionary relationship with different CHS and CHI proteins of other dicot plants. MicroRNA target analysis showed miR169n and 3p miR5053 targeting PeCHS gene while miR169c-3p and miR4248 are targeting PeCHI gene, respectively. Three-dimensional structural models of PeCHS and PeCHI proteins were elucidated by homology modeling with Ramachandran plots showing the excellent geometry of the proteins structure. Molecular docking revealed that cinnamoyl-coa and naringenin chalcone substrates are strongly bound to PeCHS and PeCHI proteins, respectively. Finally, molecular dynamics (MD) simulation for 30 ns, further yielded stability checks of ligands in the binding pocket and behavior of protein complexes. Thus MD simulation and interaction fraction analysis showed the stable conformation of PeCHS and PeCHI proteins with their respective substrates during theee simulation. Our study provides first-hand structural prospective of PeCHS and PeCHI proteins towards understanding the mechanism of flavonoid biosynthetic pathway in P. emblica.
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Affiliation(s)
- Anuj Kumar
- Advance Centre for Computational and Applied Biotechnology, Uttarakhand Council for Biotechnology (UCB), Dehradun, 248007 India
| | - Mansi Sharma
- Bioclues.Org, Kukatpally, Hyderabad, 500072 India
| | - Swaroopa Nand Chaubey
- Department of Bioinformatics, Biotech Park, Sector G, Jankipuram, Lucknow, UP 226021 India
| | - Avneesh Kumar
- Department of Botany, Akal University, Talwandi Sabo, Bathinda, 151302 India
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14
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Chowdhury S, Bhuiya S, Haque L, Das S. In-depth investigation of the binding of flavonoid taxifolin with bovine hemoglobin at physiological pH: Spectroscopic and molecular docking studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117513. [PMID: 31521000 DOI: 10.1016/j.saa.2019.117513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
The use of bioactive flavonoids as drugs has long mesmerized the scientific world. Their small size and planar structure enables them to interact with limitless substrates especially biomolecules. Taxifolin is a flavonoid well known for its anti-oxidizing and metal chelating properties. Its interaction with a few biomolecules has been studied so far to exploit its pharmacological activities. Hemoglobin, an iron containing macromolecule acts as a major carrier protein and is also associated with the occurrence of many diseases. Our present study lays emphasis on the interaction of flavanonol taxifolin with bovine hemoglobin at physiological pH. This was achieved by monitoring the changes in the absorbance, fluorescence, anisotropic, lifetime and circular dichroic spectra. Benesi-Hildebrand plot determined a binding constant value of 20.0 × 103 M-1 at 25 °C. Stern-Volmer quenching studies reveal that the binding is associated with a static mode of quenching. The complexation is thermodynamically favored as indicated by the negative value of enthalpy and positive value of entropy changes seen from the van't Hoff plot. Theoretical DFT calculations were used to find out an optimized geometry and HOMO-LUMO energy gap for taxifolin. Molecular docking studies revealed the location of taxifolin inside the hemoglobin moiety.
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Affiliation(s)
- Susmita Chowdhury
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Sutanwi Bhuiya
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Lucy Haque
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Suman Das
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, India.
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15
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Hasibi F, Nasirpour A, Varshosaz J, García‐Manrique P, Blanco‐López MC, Gutiérrez G, Matos M. Formulation and Characterization of Taxifolin‐Loaded Lipid Nanovesicles (Liposomes, Niosomes, and Transfersomes) for Beverage Fortification. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201900105] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Forough Hasibi
- Department of Food Science and TechnologyCollege of AgricultureIsfahan University of Technology Isfahan 84156‐83111 Iran
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Ali Nasirpour
- Department of Food Science and TechnologyCollege of AgricultureIsfahan University of Technology Isfahan 84156‐83111 Iran
| | - Jaleh Varshosaz
- Department of PharmaceuticsFaculty of Pharmacy and Novel Drug Delivery Systems Research CenterIsfahan University of Medical Sciences Isfahan 81746‐73461 Iran
| | - Pablo García‐Manrique
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Maria Carmen Blanco‐López
- Department of Physical and Analytical ChemistryUniversity of Oviedo, Oviedo, Spain, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Gemma Gutiérrez
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - María Matos
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
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16
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Zhang C, Korshin GV, Kuznetsov AM, Yan M. Experimental and quantum-chemical study of differential absorbance spectra of environmentally relevant species: A study of quercetin deprotonation and its interactions with copper (II) ions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 679:229-236. [PMID: 31082596 DOI: 10.1016/j.scitotenv.2019.04.370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/25/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
This study compared the experimental and theoretically calculated differential absorbance spectra (DAS) of quercetin, which is a typical model compound of natural organic matter (NOM) that is found in biochemical and environmental systems. Absorbance spectra of quercetin, which has five exchangeable protons, were generated at each state of deprotonation and its binding with Cu(II) ions. The spectra showed that the emergence of characteristic peaks in the experimental DAS was associated with the deprotonation of quercetin and its binding with Cu(II). Calculations of the theoretical DAS were conducted based on the time-dependent density functional theory (TD-DFT) methods and yielded results that were consistent with the experimental DAS data because the features in the absorbance spectra were primarily associated with the electron transitions from the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO) in the molecule. The appearance of the characteristic peaks in the DAS reflects the changes of the structure and electron distribution of the organic molecules that are induced by water treatment or environmental processes.
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Affiliation(s)
- Chenyang Zhang
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China
| | - Gregory V Korshin
- Department of Civil and Environmental Engineering, University of Washington, Box 352700, Seattle, WA 98195-2700, United States
| | - Andrey M Kuznetsov
- Department of Inorganic Chemistry, Kazan National Research Technological University, K. Marx Street 68, 420015, Russian Federation
| | - Mingquan Yan
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
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17
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Whaley WL, Tseng JT, Rummel JD, Wommack CL. Monohydroxyflavones: Distribution Coefficients and Affinities for Reverse-Phase (C18) and Immobilized Artificial Membrane (IAM) Adsorbents. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0700201005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Distribution coefficients (D) were measured for flavone, monohydroxyflavones, and monomethoxyflavones equilibrated between 1-octanol and aqueous buffer (50 mM MOPS, pH=7.4). The values of LogD were used to determine substitution constants referred to as π values. Hydroxyl groups at the 3 or 5 position of flavone had positive π values (increased hydrophobicity) while hydroxyl groups at other positions had negative π values (increased hydrophilicity). For each monohydroxyflavone, chromatographic capacity factors (k’) were determined for both reverse phase (C-18) and immobilized artificial membrane (IAM) columns. For the IAM column, relatively large k’ values were observed for both 3-hydroxyflavone and 5-hydroxyflavone indicating that hydroxyl groups at positions 3 and 5 of flavones promote high affinities for phospholipid structures. These results should aid in refinement of quantitative structure activity relationships (QSAR's) that are useful for drug development based on flavonoids as lead compounds.
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Affiliation(s)
- William L. Whaley
- Department of Chemistry, P.O. Box 3011, Texas A&M University-Commerce, Commerce, TX 75439-3011, USA
| | - Jen-Te Tseng
- Department of Chemistry, P.O. Box 3011, Texas A&M University-Commerce, Commerce, TX 75439-3011, USA
| | - Jeremy D. Rummel
- Department of Chemistry, P.O. Box 3011, Texas A&M University-Commerce, Commerce, TX 75439-3011, USA
| | - Cody L. Wommack
- Department of Chemistry, P.O. Box 3011, Texas A&M University-Commerce, Commerce, TX 75439-3011, USA
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18
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Abstract
Flavonoids are tricyclic polyphenolic compounds naturally occurring in plants. Being nature’s antioxidants flavonoids have been shown to reduce the damages induced by oxidative stress in cells. Besides being an antioxidant, flavonols are demonstrated to have anti-infective properties, i.e., antiviral, antifungal, anti-angiogenic, anti-tumorigenic, and immunomodulatory bioproperties. Plants use them as one of their defense mechanisms against radiation-induced DNA damage and also for fungal infections. The use of flavonols for fabrication of new drugs has been underway with objectives to develop safer and effective therapeutic agents. This review covers 15 flavonols for their structure, biological properties, role in plant metabolisms, and current research focused on computational drug design using flavonols for searching drug leads.
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19
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Cholesterol modulates curcumin partitioning and membrane effects. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:2320-2328. [DOI: 10.1016/j.bbamem.2018.05.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 05/14/2018] [Accepted: 05/30/2018] [Indexed: 12/19/2022]
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20
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The Effect of Dihydroquercetin on Catalytic Activity of Iron (II) Ions in the Fenton Reaction. Bull Exp Biol Med 2018; 165:347-350. [DOI: 10.1007/s10517-018-4167-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Indexed: 02/03/2023]
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21
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Wang Q, Zi CT, Wang J, Wang YN, Huang YW, Fu XQ, Wang XJ, Sheng J. Dendrobium officinale Orchid Extract Prevents Ovariectomy-Induced Osteoporosis in Vivo and Inhibits RANKL-Induced Osteoclast Differentiation in Vitro. Front Pharmacol 2018; 8:966. [PMID: 29379436 PMCID: PMC5775521 DOI: 10.3389/fphar.2017.00966] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/19/2017] [Indexed: 02/04/2023] Open
Abstract
Background:Dendrobium officinale, a traditional Chinese medical herb with high value that is widely used in Asia, possesses many positive effects on human health, including anti-chronic inflammation, anti-obesity, and immune modulation properties; however, whether D. officinale has inhibitory effects on postmenopausal osteoporosis remains unknown. Objective: We investigated the effects of D. officinale extract (DOE) on ovariectomy-induced bone loss in vivo and on osteoclastogenesis in vitro. Methods:In vivo, female rats were divided into a sham-operated (sham) group and five ovariectomized (OVX) subgroups: OVX with vehicle (OVX), OVX with Xian-Ling-Gu-Bao capsule (240 mg/kg body weight/day), and OVX with low-, medium-, and high-dose DOE (150, 300, and 600 mg/kg body weight/day, respectively). Animals in each group were administered their corresponding treatments for 13 weeks. Body weight, serum biochemical parameters, uterine and femoral physical parameters, bone mineral density (BMD), bone biomechanical properties, and bone microarchitecture were obtained. In vitro, the effects of DOE on osteoclastogenesis were examined using RAW264.7 cells. The effects of DOE on osteoclastogenesis and the expression of osteoclast-specific marker genes and proteins were determined. Results: DOE effectively ameliorated serum biochemical parameters, especially alleviated estradiol (E2) deficiency and maintained calcium and phosphorus homeostasis. DOE improved uterine and femoral physical parameters. In addition, DOE improved femoral BMD and biomechanical properties. DOE significantly ameliorated bone microarchitecture. Moreover, DOE inhibited osteoclastogenesis independent of its cytoxicity and suppressed the expression of osteoclast-specific marker genes and proteins. Conclusion: DOE can effectively prevent ovariectomy-induced bone loss in vivo and inhibit osteoclastogenesis in vitro.
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Affiliation(s)
- Qi Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Tea Science, Yunnan Agricultural University, Kunming, China
| | - Cheng-Ting Zi
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Tea Science, Yunnan Agricultural University, Kunming, China
| | - Jing Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Yu-Na Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Ye-Wei Huang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Xue-Qi Fu
- College of Life Sciences, Jilin University, Changchun, China
| | - Xuan-Jun Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- College of Tea Science, Yunnan Agricultural University, Kunming, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, China
| | - Jun Sheng
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming, China
- Tea Research Center of Yunnan, Kunming, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Kunming, China
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Mixed-ligand copper(II) complex of quercetin regulate osteogenesis and angiogenesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 83:187-194. [PMID: 29208278 DOI: 10.1016/j.msec.2017.09.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 07/28/2017] [Accepted: 09/27/2017] [Indexed: 11/20/2022]
Abstract
Copper(II) complex of quercetin Cu+Q, mixed ligand complexes, quercetin-Cu(II)-phenanthroline [Cu+Q(PHt)] and quercetin-Cu(II)-neocuproine [Cu+Q(Neo)] have been synthesized and characterized. From the FT-IR spectroscopic studies, it was evident that C-ring of quercetin is involved in the metal chelation in all the three copper complexes. C-ring chelation was further proven by UV-Visible spectra and the presence of Cu(II) from EPR spectroscopic investigations. These complexes were found to have osteogenic and angiogenic properties, observed through in vitro osteoblast differentiation and chick embryo angiogenesis assay. In osteoblast differentiation, quercetin-Cu(II) complexes treatment increased calcium deposition and alkaline phosphatase activity (ALP) activity at the cellular level and stimulated Runx2 mRNA and protein, ALP mRNA and type 1 collagen mRNA expression at the molecular level. Among the complexes, Q+Cu(PHt) showed more effects on osteoblast differentiation when compared to that of other two copper complexes. Additionally, Q+Cu(Neo) showed more effect compared to Q+Cu. Furthermore, the effect of these complexes on osteoblast differentiation was confirmed by the expression of osteoblast specific microRNA, pre-mir-15b. The chick embryo angiogenesis assay showed that angiogenic parameters such as blood vessel length, size and junctions were stimulated by these complexes. Thus, the present study demonstrated that quercetin copper(II) complexes exhibit as a pharmacological agent for the orthopedic application.
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Shubina VS, Shatalin YV. Antioxidant and iron-chelating properties of taxifolin and its condensation product with glyoxylic acid. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2017; 54:1467-1475. [PMID: 28559605 PMCID: PMC5430177 DOI: 10.1007/s13197-017-2573-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/27/2017] [Indexed: 12/16/2022]
Abstract
The condensation of taxifolin with glyoxylic acid was examined, and the properties of the resulting product were compared with those of taxifolin. The structure of the product was determined by NMR spectroscopy. The ability of the polyphenols to scavenge reactive oxygen species (ROS) was estimated by luminol-dependent chemiluminescence. The iron-chelating and iron-reducing activities were studied using absorption spectrophotometry. It was shown that the condensation leads to the formation of a dimer consisting of two taxifolin units linked through a carboxymethine bridge at the C-6 and C-8 positions of the A ring. The dimer exhibited a somewhat higher ROS scavenging activity than taxifolin. The iron-binding capacity of the compounds was proportional to the number of polyphenol units. The iron-reducing ability of the dimer was lower than that of taxifolin. Thus, the dimer possessed a higher antioxidant activity than the parent flavonoid. The data obtained may be useful for a better understanding of processes occurring in foods and beverages and in a search for new active compounds.
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Affiliation(s)
- Victoria S. Shubina
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, Russia 142290
| | - Yuri V. Shatalin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya 3, Pushchino, Moscow Region, Russia 142290
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24
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Spectrophotometric and quantum-chemical study of acid-base and complexing properties of (±)-taxifolin in aqueous solution. HETEROCYCL COMMUN 2017. [DOI: 10.1515/hc-2017-0075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThis study reports the acid-base properties of taxifolin (Tf) in HCl media and aqueous complexation with Ni(II). The equilibrium processes was investigated using a spectrophotometric technique and
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25
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Biler M, Biedermann D, Valentová K, Křen V, Kubala M. Quercetin and its analogues: optical and acido–basic properties. Phys Chem Chem Phys 2017; 19:26870-26879. [DOI: 10.1039/c7cp03845c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This study is focused on eight structurally analogous natural flavonoids that exhibit a wide range of biological activities, which are of interest in pharmacy, cosmetics and the food industry.
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Affiliation(s)
- Michal Biler
- Department of Biophysics
- Centre of the Region Haná for Biotechnological and Agricultural Research
- Palacký University
- Olomouc
- Czech Republic
| | - David Biedermann
- Institute of Microbiology
- Laboratory of Biotransformation
- Czech Academy of Sciences
- Prague
- Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology
- Laboratory of Biotransformation
- Czech Academy of Sciences
- Prague
- Czech Republic
| | - Vladimír Křen
- Institute of Microbiology
- Laboratory of Biotransformation
- Czech Academy of Sciences
- Prague
- Czech Republic
| | - Martin Kubala
- Department of Biophysics
- Centre of the Region Haná for Biotechnological and Agricultural Research
- Palacký University
- Olomouc
- Czech Republic
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26
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Zhou RP, Lin SJ, Wan WB, Zuo HL, Yao FF, Ruan HB, Xu J, Song W, Zhou YC, Wen SY, Dai JH, Zhu ML, Luo J. Chlorogenic Acid Prevents Osteoporosis by Shp2/PI3K/Akt Pathway in Ovariectomized Rats. PLoS One 2016; 11:e0166751. [PMID: 28033335 PMCID: PMC5199056 DOI: 10.1371/journal.pone.0166751] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 11/03/2016] [Indexed: 01/22/2023] Open
Abstract
Cortex Eucommiae is used worldwide in traditional medicine, various constituents of Cortex Eucommiae, such as chlorogenic acid (CGA), has been reported to exert anti-osteoporosis activity in China, but the mechanism about their contribution to the overall activity is limited. The aims of this study were to determine whether chlorogenic acid can prevent estrogen deficiency-induced osteoporosis and to analyze the mechanism of CGA bioactivity. The effect of CGA on estrogen deficiency-induced osteoporosis was performed in vivo. Sixty female Sprague-Dawley rats were divided randomly among a sham-operated group and five ovariectomy (OVX) plus treatment subgroups: saline vehicle, 17α-ethinylestradiol (E2), or CGA at 9, 27, or 45 mg/kg/d. The rats’ femoral metaphyses were evaluated by micro-computed tomography (μCT). The mechanism of CGA bioactivity was investigated in vitro. Bone mesenchymal stem cells (BMSCs) were treated with CGA, with or without phosphoinositide 3-kinase (PI3K) inhibitor LY294002. BMSCs proliferation and osteoblast differentiation were assessed with 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) and alkaline phosphatase, with or without Shp2 interfering RNA (RNAi). The results display that CGA at 27 and 45 mg/kg/day inhibited the decrease of bone mineral density (BMD) that induced by OVX in femur (p< 0.01), significantly promoted the levels of bone turnover markers, and prevented bone volume fraction (BV/TV), connectivity density (CoonD), trabecular number (Tb.N), trabecular thickness (Tb.Th) (all p< 0.01) to decrease and prevented the trabecular separation (Tb.Sp), structure model index (SMI)(both p< 0.01) to increase. CGA at 1 or 10 μM enhanced BMSC proliferation in a dose-dependent manner. CGA at 0.1 to 10 μM increased phosphorylated Akt (p-Akt) and cyclin D1. These effects were reversed by LY294002. CGA at 1 or 10 μM increased BMSC differentiation to osteoblasts (p< 0.01), Shp2 RNAi suppressed CGA-induced osteoblast differentiation by decreasing Shp2, p-Akt, and cyclin D1. This study found that CGA improved the BMD and trabecular micro-architecture for the OVX-induced osteoporosis. Therefore, CGA might be an effective alternative treatment for postmenopausal osteoporosis. CGA promoted proliferation of osteoblast precursors and osteoblastic differentiation of BMSCs via the Shp2/PI3K/Akt/cyclin D1 pathway.
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Affiliation(s)
- Rong Ping Zhou
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of JiangXi, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
- * E-mail: (JL); (RPZ)
| | - Si Jian Lin
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of JiangXi, NanChang, JiangXi, China
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
| | - Wen Bing Wan
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Hui Ling Zuo
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
| | - Fen Fen Yao
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
| | - Hui Bing Ruan
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Jin Xu
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Wei Song
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Yi Cheng Zhou
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Shi Yao Wen
- Orthopaedic Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
| | - Jiang Hua Dai
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of JiangXi, NanChang, JiangXi, China
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
| | - Mei Lan Zhu
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of JiangXi, NanChang, JiangXi, China
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
| | - Jun Luo
- Regeneration and Rehabilitation Engineering Research Institute on Bone and Nerve of JiangXi, NanChang, JiangXi, China
- Orthopaedics Research Institute of Jiangxi, NanChuang University, NanChang, JiangXi, China
- Rehabilitation Department, The Second Affiliated Hospital of NanChang University, NanChang, JiangXi, China
- * E-mail: (JL); (RPZ)
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Sentkowska A, Biesaga M, Pyrzynska K. Application of Hydrophilic Interaction Liquid Chromatography for the Quantification of Flavonoids in Genista tinctoria Extract. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:3789348. [PMID: 27433372 PMCID: PMC4940558 DOI: 10.1155/2016/3789348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 05/29/2023]
Abstract
Hydrophilic interaction chromatography (HILIC) was employed to investigate chromatographic behavior of selected flavonoids from their different subgroups differing in polarity. Chromatographic measurements were performed on two different HILIC columns: unmodified silica (Atlantis-HILIC) and zwitterionic sulfoalkylbetaine (SeQuant ZIC-HILIC). Separation parameters such as content and type of organic modifier were studied. On ZIC column retention factors were observed to be inversely proportional to the buffer content in the mobile phase, which is the typical partitioning mechanism. In the case of bare silica column more or less apparent dual retention mechanism was observed, depending on the water component content in the mobile phase. ZIC-HILIC showed better selectivity (in comparison to silica column) with the detection limit of 0.01 mg/L (only for rutin was 0.05 mg/L). Finally, this chromatographic procedure was validated and applied for the determination of some flavonoids in Genista tinctoria L. extract.
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Affiliation(s)
| | - Magdalena Biesaga
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Krystyna Pyrzynska
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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Medeiros PSC, Batista de Carvalho ALM, Ruano C, Otero JC, Marques MPM. Raman microspectroscopy for probing the impact of a dietary antioxidant on human breast cancer cells. Food Funct 2016; 7:2800-10. [PMID: 27227510 DOI: 10.1039/c6fo00209a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Breast cancer is the second most common type of cancer worldwide and the most frequent among women, being the fifth cause of death from neoplastic disease. Since this is an oxidative-stress related neoplasia, it is largely preventable. A dietary isoflavone abundant in soybean - daidzein - is currently being investigated owing to its chemopreventive and/or chemotherapeutic properties towards the human MDA-MB-231 (metastatic, estrogen-unresponsive) and MCF-7 (estrogen-responsive) breast cancer cell lines. Biological assays for evaluation of antitumour and anti-invasive activities were combined with state-of-the-art vibrational microspectroscopy techniques. At 50 and 100 μM concentrations and 48 h incubation time, daidzein was found to induce a marked decrease in cell viability (ca. 50%) for MDA-MB-231 and MCF-7 cells (respectively ca. 50% and 42%) and 40% inhibition of cell migration. MicroRaman analysis of fixed cells upon exposure to this isoflavone unveiled its metabolic impact on both cell lines. Multivariate data analysis (unsupervised PCA) led to a clear discrimination between the control and DAID-exposed cells, with distinctive effects on their biochemical profile, particularly regarding DNA, lipids and protein components, in a cell-dependent way. This is the first reported study on the impact of dietary antioxidants on cancer cells by microRaman techniques.
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Affiliation(s)
- P S C Medeiros
- Química-Física Molecular, Univ. Coimbra, 3004-535 Coimbra, Portugal.
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29
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Lee GH, Lee SJ, Jeong SW, Kim HC, Park GY, Lee SG, Choi JH. Antioxidative and antiinflammatory activities of quercetin-loaded silica nanoparticles. Colloids Surf B Biointerfaces 2016; 143:511-517. [PMID: 27038916 DOI: 10.1016/j.colsurfb.2016.03.060] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/19/2016] [Accepted: 03/21/2016] [Indexed: 10/22/2022]
Abstract
Utilizing the biological activities of compounds by encapsulating natural components in stable nanoparticles is an important strategy for a variety of biomedical and healthcare applications. In this study, quercetin-loaded silica nanoparticles were synthesized using an oil-in-water microemulsion method, which is a suitable system for producing functional nanoparticles of controlled size and shape. The resulting quercetin-loaded silica nanoparticles were spherical, highly monodispersed, and stable in an aqueous system. Superoxide radical scavenging effects were found for the quercetin-loaded silica nanoparticles as well as free quercetin. The quercetin-loaded silica nanoparticles showed cell viability comparable to that of the controls. The amounts of proinflammatory cytokines produced by macrophages, such as interleukin 1 beta, interleukin 6, and tumor necrosis factor alpha, were reduced significantly for the quercetin-loaded silica nanoparticles. These results suggest that the antioxidative and antiinflammatory activities of quercetin are maintained after encapsulation in silica. Silica nanoparticles can be used for the effective and stable incorporation of biologically active natural components into composite biomaterials.
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Affiliation(s)
- Ga Hyun Lee
- Division of Nano & Bio Technology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea; Department of Advanced Organic Materials Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sung June Lee
- Division of Nano & Bio Technology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Sang Won Jeong
- Division of Nano & Bio Technology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Hyun-Chul Kim
- Division of Nano & Bio Technology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Ga Young Park
- Department of Bio-fibers and materials Science, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Se Geun Lee
- Division of Nano & Bio Technology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea.
| | - Jin Hyun Choi
- Department of Advanced Organic Materials Science and Engineering, Kyungpook National University, Daegu 41566, Republic of Korea; Department of Bio-fibers and materials Science, Kyungpook National University, Daegu 41566, Republic of Korea.
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Sun B, Gou Y, Xue Z, Zheng X, Ma Y, Hu F, Zhao W. Protections of bovine serum albumin protein from damage on functionalized graphene-based electrodes by flavonoids. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:197-205. [PMID: 26952415 DOI: 10.1016/j.msec.2016.01.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 12/08/2015] [Accepted: 01/15/2016] [Indexed: 01/07/2023]
Abstract
A sensitive electrochemical sensor based on bovine serum albumin (BSA)/poly (diallyldimethylammonium chloride) (PDDA) functionalized graphene nanosheets (PDDA-G) composite film modified glassy carbon electrode (BSA/PDDA-G/GCE) had been developed to investigate the oxidative protein damage and protections of protein from damage by flavonoids. The performance of this sensor was remarkably improved due to excellent electrical conductivity, strong adsorptive ability, and large effective surface area of PDDA-G. The BSA/PDDA-G/GCE displayed the greatest degree of BSA oxidation damage at 40 min incubation time and in the pH 5.0 Fenton reagent system (12.5 mM FeSO4, 50 mM H2O2). The antioxidant activities of four flavonoids had been compared by fabricated sensor based on the relative peak current ratio of SWV, because flavonoids prevented BSA damage caused by Fenton reagent and affected the BSA signal in a solution containing Co(bpy)3(3+). The sensor was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). UV-vis spectrophotometry and FTIR were also used to investigate the generation of hydroxyl radical and BSA damage, respectively. On the basis of results from electrochemical methods, the order of the antioxidant activities of flavonoids is as follows: (+)-catechin>kaempferol>apigenin>naringenin. A novel, direct SWV analytical method for detection of BSA damage and assessment of the antioxidant activities of four flavonoids was developed and this electrochemical method provided a simple, inexpensive and rapid detection of BSA damage and evaluation of the antioxidant activities of samples.
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Affiliation(s)
- Bolu Sun
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yuqiang Gou
- Lanzhou Military Command Center for Disease Prevention and Control, Lanzhou 730000, China
| | - Zhiyuan Xue
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Xiaoping Zheng
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yuling Ma
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Fangdi Hu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
| | - Wanghong Zhao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 51515, China.
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32
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Galan A, Losada-Barreiro S, Bravo-Díaz C. A Physicochemical Study of the Effects of Acidity on the Distribution and Antioxidant Efficiency of Trolox in Olive Oil-in-Water Emulsions. Chemphyschem 2015; 17:296-304. [PMID: 26592178 DOI: 10.1002/cphc.201500882] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 11/08/2022]
Abstract
The efficiency of antioxidants to inhibit the oxidation of lipid-based emulsions depends on several factors including their nature and their concentration at the reaction site. Here, we have analyzed the effects of acidity and of surfactant concentration on the distribution and efficiency of the vitamin E analog Trolox (TR) in stripped olive oil-in-water emulsions stabilized with Tween 20. The distribution was assessed in the intact emulsions by employing a kinetic method that exploits the reaction between the hydrophobic 4-hexadecylbenzenediazonium ions and TR. Kinetic results are interpreted on the grounds of the pseudophase model. The effects of TR on the oxidative stability of the emulsion were determined at different pH values by monitoring the formation of conjugated dienes over time. The results show that the efficiency of TR increases upon increasing pH even though its concentration in the interfacial region decreases.
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Affiliation(s)
- Anna Galan
- Departamento de Química Física, Universidad de Vigo, Rua das Abelleiras S/N, 36200 Vigo, Pontevedra, Spain
| | - Sonia Losada-Barreiro
- Departamento de Química Física, Universidad de Vigo, Rua das Abelleiras S/N, 36200 Vigo, Pontevedra, Spain.
| | - Carlos Bravo-Díaz
- Departamento de Química Física, Universidad de Vigo, Rua das Abelleiras S/N, 36200 Vigo, Pontevedra, Spain
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33
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Sun W, Meng X, Liang L, Jiang W, Huang Y, He J, Hu H, Almqvist J, Gao X, Wang L. Molecular and Biochemical Analysis of Chalcone Synthase from Freesia hybrid in flavonoid biosynthetic pathway. PLoS One 2015; 10:e0119054. [PMID: 25742495 PMCID: PMC4351062 DOI: 10.1371/journal.pone.0119054] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 01/09/2015] [Indexed: 11/19/2022] Open
Abstract
Chalcone synthase (CHS) catalyzes the first committed step in the flavonoid biosynthetic pathway. In this study, the cDNA (FhCHS1) encoding CHS from Freesia hybrida was successfully isolated and analyzed. Multiple sequence alignments showed that both the conserved CHS active site residues and CHS signature sequence were found in the deduced amino acid sequence of FhCHS1. Meanwhile, crystallographic analysis revealed that protein structure of FhCHS1 is highly similar to that of alfalfa CHS2, and the biochemical analysis results indicated that it has an enzymatic role in naringenin biosynthesis. Moreover, quantitative real-time PCR was performed to detect the transcript levels of FhCHS1 in flowers and different tissues, and patterns of FhCHS1 expression in flowers showed significant correlation to the accumulation patterns of anthocyanin during flower development. To further characterize the functionality of FhCHS1, its ectopic expression in Arabidopsis thaliana tt4 mutants and Petunia hybrida was performed. The results showed that overexpression of FhCHS1 in tt4 mutants fully restored the pigmentation phenotype of the seed coats, cotyledons and hypocotyls, while transgenic petunia expressing FhCHS1 showed flower color alteration from white to pink. In summary, these results suggest that FhCHS1 plays an essential role in the biosynthesis of flavonoid in Freesia hybrida and may be used to modify the components of flavonoids in other plants.
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Affiliation(s)
- Wei Sun
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Xiangyu Meng
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Lingjie Liang
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Wangshu Jiang
- Department of Cell and Molecular Biology, Uppsala University, Uppsala Biomedical Center, Uppsala, 596, S-75124, Sweden
| | - Yafei Huang
- Department of Cell and Molecular Biology, Uppsala University, Uppsala Biomedical Center, Uppsala, 596, S-75124, Sweden
| | - Jing He
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Haiyan Hu
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Jonas Almqvist
- Department of Cell and Molecular Biology, Uppsala University, Uppsala Biomedical Center, Uppsala, 596, S-75124, Sweden
| | - Xiang Gao
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
| | - Li Wang
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, China
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34
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Eid HM, Nachar A, Thong F, Sweeney G, Haddad PS. The molecular basis of the antidiabetic action of quercetin in cultured skeletal muscle cells and hepatocytes. Pharmacogn Mag 2015; 11:74-81. [PMID: 25709214 PMCID: PMC4329636 DOI: 10.4103/0973-1296.149708] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/09/2014] [Accepted: 01/21/2015] [Indexed: 01/25/2023] Open
Abstract
Background: Quercetin is universally distributed in the plant kingdom and is the most abundant flavonoid in the human diet. In a previous study, we have reported that quercetin stimulated glucose uptake in cultured C2C12 skeletal muscle through an insulin-independent mechanism involving adenosine monophosphate-activated protein kinase (AMPK). AMPK is a key regulator of the whole body-energy homeostasis. In skeletal muscle, activation of AMPK increases glucose uptake through the stimulation of the glucose transporter GLUT4 translocation to the plasma membrane. In liver, AMPK decreases glucose production mainly through the downregulation of the key gluconeogenesis enzymes such as phosphoenolpyruvate carboxylase (PEPCK) and Glucose -6-phosphate (G6Pase). Objective: To study the effect of quercetin on glucose homeostasis in muscle and liver. Materials and Methods: L6 skeletal muscle cells, murine H4IIE and human HepG2 hepatocytes were treated with quercetin (50 μM) for 18 h. Results: An 18 h treatment with quercetin (50 μM) stimulated AMPK and increased GLUT4 translocation and protein content in cultured rat L6 skeletal muscle cells. On the other hand, we report that quercetin induced hepatic AMPK activation and inhibited G6pase in H4IIE hepatocytes. Finally, we have observed that quercetin exhibited a mild tendency to increase the activity of glycogen synthase (GS), the rate-limiting enzyme of glycogen synthesis, in HepG2 hepatocytes. Conclusions: Overall, these data demonstrate that quercetin positively influences glucose metabolism in the liver and skeletal muscle, and therefore appear to be a promising therapeutic candidate for the treatment of in type 2 diabetes.
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Affiliation(s)
- Hoda M Eid
- Department of Pharmacology, Natural Health Products and Metabolic Diseases Laboratory, Université de Montréal, Montreal, QC, Canada ; Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines and Montreal Diabetes Research Center, Canada ; Department of Pharmacognosy, University of Beni-seuf, Beni-seuf, Egypt
| | - Abir Nachar
- Department of Pharmacology, Natural Health Products and Metabolic Diseases Laboratory, Université de Montréal, Montreal, QC, Canada ; Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines and Montreal Diabetes Research Center, Canada
| | - Farah Thong
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Gary Sweeney
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Pierre S Haddad
- Department of Pharmacology, Natural Health Products and Metabolic Diseases Laboratory, Université de Montréal, Montreal, QC, Canada ; Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines and Montreal Diabetes Research Center, Canada
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36
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Kasprzak MM, Erxleben A, Ochocki J. Properties and applications of flavonoid metal complexes. RSC Adv 2015. [DOI: 10.1039/c5ra05069c] [Citation(s) in RCA: 225] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Flavonoid metal complexes have a wide spectrum of activities as well as potential and actual applications.
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Affiliation(s)
- Maria M. Kasprzak
- Department of Bioinorganic Chemistry
- Medical University of Lodz
- Lodz
- Poland
| | - Andrea Erxleben
- School of Chemistry
- National University of Ireland
- Galway
- Ireland
| | - Justyn Ochocki
- Department of Bioinorganic Chemistry
- Medical University of Lodz
- Lodz
- Poland
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37
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Elumalai N, Ayyakkannu P, Palanivelu S, Panchanadham S. In vitro antioxidant potential of Shemamruthaa (a herbal formulation) and its anticancer activity in the MCF-7 cell line. RSC Adv 2015. [DOI: 10.1039/c4ra12346h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The current study investigates the free radical scavenging activities of methanolic and aqueous extracts of Shemamruthaa (Hibiscus rosa sinensis, Emblica officinalis and honey in definite ratio) and their anticancer activity in the breast cancer (MCF-7) cell line ex vivo.
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Affiliation(s)
- Nandhakumar Elumalai
- Department of Medical Biochemistry
- Dr. ALM Post-Graduate Institute of Basic Medical Sciences
- University of Madras
- Chennai-600113
- India
| | - Purushothaman Ayyakkannu
- Department of Medical Biochemistry
- Dr. ALM Post-Graduate Institute of Basic Medical Sciences
- University of Madras
- Chennai-600113
- India
| | - Shanthi Palanivelu
- Department of Pathology
- Dr. ALM Post-Graduate Institute of Basic Medical Sciences
- University of Madras
- Chennai-600113
- India
| | - Sachdanandam Panchanadham
- Department of Medical Biochemistry
- Dr. ALM Post-Graduate Institute of Basic Medical Sciences
- University of Madras
- Chennai-600113
- India
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38
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Bhardwaj V, Sharma K, Chauhan S, Sharma P. Intermolecular interactions of CTAB and potential oxidation inhibitors: physico-chemical controlled approach for food/pharmaceutical function. RSC Adv 2014. [DOI: 10.1039/c4ra04386c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Paleco R, Vučen SR, Crean AM, Moore A, Scalia S. Enhancement of the in vitro penetration of quercetin through pig skin by combined microneedles and lipid microparticles. Int J Pharm 2014; 472:206-13. [DOI: 10.1016/j.ijpharm.2014.06.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 01/03/2023]
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40
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Říha M, Karlíčková J, Filipský T, Macáková K, Rocha L, Bovicelli P, Silvestri IP, Saso L, Jahodář L, Hrdina R, Mladěnka P. In vitro evaluation of copper-chelating properties of flavonoids. RSC Adv 2014. [DOI: 10.1039/c4ra04575k] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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41
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Antibacterial and free radical scavenging potential of synthesized 7-hydroxy-2-aryl-6-aryldiazenyl-4H-chromen-4-ones. Med Chem Res 2014. [DOI: 10.1007/s00044-014-0938-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Losada-Barreiro S, Costa M, Bravo-Díaz C, Paiva-Martins F. Distribution and Antioxidant Efficiency of Resveratrol in Stripped Corn Oil Emulsions. Antioxidants (Basel) 2014; 3:212-28. [PMID: 26784868 PMCID: PMC4665480 DOI: 10.3390/antiox3020212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/19/2014] [Accepted: 02/28/2014] [Indexed: 02/02/2023] Open
Abstract
We investigated the effects of resveratrol (RES) on the oxidative stability of emulsions composed of stripped corn oil, acidic water and Tween 20 and determined its distribution in the intact emulsions by employing a well-established kinetic method. The distribution of RES is described by two partition constants, that between the oil-interfacial region, PO(I), and that between the aqueous and interfacial region, PW(I). The partition constants, PO(I) and PW(I), are obtained in the intact emulsions from the variations of the observed rate constant, kobs, for the reaction between the hydrophobic 4-hexadecylbenzenediazonium ion and RES with the emulsifier volume fraction, ФI. The obtained PO(I) and PW(I) values are quite high, PW(I) = 4374 and PO(I) = 930, indicating that RES is primarily located in the interfacial region of the emulsions, %RESI > 90% at ФI = 0.005, increasing up to 99% at ФI = 0.04. The oxidative stability of the corn oil emulsions was determined by measuring the formation of conjugated dienes at a given time in the absence and in the presence of RES. The addition of RES did not improve their oxidative stability in spite that more than 90% of RES is located in the interfacial region of the emulsion, because of the very low radical scavenging activity of RES.
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Affiliation(s)
- Sonia Losada-Barreiro
- Department of Physical Chemistry, Faculty of Chemistry, University of Vigo, Vigo 36200, Spain.
| | - Marlene Costa
- CIQ-UP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto 4169-007, Portugal.
| | - Carlos Bravo-Díaz
- Department of Physical Chemistry, Faculty of Chemistry, University of Vigo, Vigo 36200, Spain.
| | - Fátima Paiva-Martins
- CIQ-UP, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto 4169-007, Portugal.
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43
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Influence of Temperature on the Distribution of Catechin in Corn Oil-in-Water Emulsions and Some Relevant Thermodynamic Parameters. FOOD BIOPHYS 2014. [DOI: 10.1007/s11483-014-9332-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Incorporation of quercetin in respirable lipid microparticles: Effect on stability and cellular uptake on A549 pulmonary alveolar epithelial cells. Colloids Surf B Biointerfaces 2013; 112:322-9. [DOI: 10.1016/j.colsurfb.2013.07.067] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/16/2013] [Accepted: 07/31/2013] [Indexed: 12/11/2022]
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45
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Pucciarelli DL. Cocoa and heart health: a historical review of the science. Nutrients 2013; 5:3854-70. [PMID: 24077240 PMCID: PMC3820048 DOI: 10.3390/nu5103854] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 09/10/2013] [Accepted: 09/11/2013] [Indexed: 11/16/2022] Open
Abstract
The medicinal use of cocoa has a long history dating back almost five hundred years when Hernán Cortés’s first experienced the drink in Mesoamerica. Doctors in Europe recommended the beverage to patients in the 1700s, and later American physicians followed suit and prescribed the drink in early America―ca. 1800s. This article delineates the historic trajectory of cocoa consumption, the linkage between cocoa’s bioactive-mechanistic properties, paying special attention to nitric oxides role in vasodilation of the arteries, to the current indicators purporting the benefits of cocoa and cardiovascular health.
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Affiliation(s)
- Deanna L Pucciarelli
- Department of Family and Consumer Sciences, Ball State University, Muncie, IN 47304, USA.
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46
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47
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Phosrithong N, Ungwitayatorn J. Ligand-based CoMFA and CoMSIA studies on chromone derivatives as radical scavengers. Bioorg Chem 2013; 49:9-15. [DOI: 10.1016/j.bioorg.2013.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 04/11/2013] [Accepted: 06/03/2013] [Indexed: 11/30/2022]
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48
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Mohammadshahi M, Haidari F, Saei AA, Rashidi B, Mahboob S, Rashidi MR. Soy protein, genistein, and daidzein improve serum paraoxonase activity and lipid profiles in rheumatoid arthritis in rats. J Med Food 2013; 16:147-54. [PMID: 23342971 DOI: 10.1089/jmf.2012.2509] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In this study, we investigated the effects of genistein, daidzein, and soy protein on paraoxonase and arylesterase activity, malondialdehyde (MDA) levels, and lipid profiles of arthritic rats in vivo and the results were compared with that of dexamethasone. Seventy-two female Sprague-Dawley rats were divided into six groups: healthy control, animals with collagen-induced arthritis (CIA), CIA-soy protein (7 g/kg)-treated rats, CIA-genistein (20 mg/kg)-treated animals, CIA-daidzein (20 mg/kg)-treated rats, and CIA-dexamethasone (1 mg/kg)-treated rats. Rheumatoid arthritis was induced using collagen type II and the treatments were carried out by daily gavages feedings for 50 days. The paraoxonase activity in serum was measured spectrophotometrically using paraoxon and phenylacetate as substrates. Serum MDA and lipids levels were determined using enzymatic colorimetric methods. Arthritis-induced decreases in paraoxonase and arylesterase activity was restored after treatment with soy protein and isoflavones (P<.05). MDA concentrations were lower after treatment with all tested compounds. However, only soy protein could partially improve the lipid profile.
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Affiliation(s)
- Majid Mohammadshahi
- Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Lupsea M, Mathies H, Schoknecht U, Tiruta-Barna L, Schiopu N. Biocide leaching from CBA treated wood - a mechanistic interpretation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 444:522-530. [PMID: 23295179 DOI: 10.1016/j.scitotenv.2012.11.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 11/24/2012] [Accepted: 11/26/2012] [Indexed: 06/01/2023]
Abstract
Treated wood is frequently used for construction. However, there is a need to ensure that biocides used for the treatment are not a threat for people or environment. The paper focused on Pinus sylvestris treated with copper-boron-azole (CBA), containing tebuconazole as organic biocide and monoethanolamine (Mea). This study investigates chemical mechanisms of fixation and mobilisation involved in the leaching process of the used inorganic and organic biocides in CBA. A pH dependent leaching test was performed, followed by a set of complementary analysis methods in order to identify and quantify the species released from wood. The main findings of this study are: - Organic compounds are released from untreated and treated wood; the quantity of released total organic carbon, carboxylic and phenolic functions increasing with the pH. - Nitrogen containing compounds, i.e. mainly Mea and its reaction products with extractives, are released in important quantities from CBA treated wood, especially at low pH. - The release of copper is the result of competitive reactions: fixation via complexation reactions and complexation with extractives in the liquid phase. The specific pH dependency of Cu leaching is explained by the competition of ligands for protonation and complexation. - Tebuconazole is released to a lesser extent relative to its initial content. Its fixation on solid wood structure seems to be influenced by pH, suggesting interactions with \OH groups on wood. Boron release appears to be pH independent and very high. This confirms its weak fixation on wood and also no or weak interaction with the extractives.
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Affiliation(s)
- Maria Lupsea
- University of Toulouse, INSA, UPS, INP, LISBP, 135 Avenue de Rangueil, F-31077 Toulouse, France
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Jiménez-Estrada M, Velázquez-Contreras C, Garibay-Escobar A, Sierras-Canchola D, Lapizco-Vázquez R, Ortiz-Sandoval C, Burgos-Hernández A, Robles-Zepeda RE. In vitro antioxidant and antiproliferative activities of plants of the ethnopharmacopeia from northwest of Mexico. Altern Ther Health Med 2013; 13:12. [PMID: 23305162 PMCID: PMC3547710 DOI: 10.1186/1472-6882-13-12] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 01/04/2013] [Indexed: 12/14/2022]
Abstract
Background The aim of this study, is to investigate the in vitro antioxidant activity, the total phenols content, the flavonoids content and the antiproliferative activity of methanolic extracts of the plants: Krameria erecta, Struthanthus palmeri, Phoradendron californicum, Senna covesii and Stegnosperma halimifolium, used by different ethnic groups from northwestern Mexico in the treatment and cure of various diseases. Methods The in vitro antioxidant activity was measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Ferric Reducing/Antioxidant Power assay (FRAP), the total phenols content was measured by Folin–Ciocalteau assay, the flavonoids content by the AlCl3 colorimetric method and the antiproliferative activity (line cells HeLa, RAW 264.7, M12Ak.C3.F6 and L929) using MTT method. Results The K. erecta extract showed the higher radical scavenging activity (67.88%), antioxidant activity by FRAP (1.41 mg Trolox Eq), the highest total phenols content (598.51 mg Galic Acid Eq/g extract), the highest flavonoids content (3.80 mg Quercetin Eq/g extract) and the greatest antiproliferative activity in a dose dependent manner against most Cell line evaluated. A positive correlation was found between the antioxidant activity and the flavonoids content. Conclusions This study is the first report on the antioxidant and antiproliferative activities of the five species evaluated. The results demostrate that there is a positive correlation between antioxidant activity and the flavonoids content, indicating that these type of polyphenols could be the major contributors to the observed antioxidant activity in the evaluated plant extracts. Of the extracts evaluated, that of Krameria erecta showed the greatest antioxidant and antiproliferative activities, a discovery that makes this species a promising candidate for future research.
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