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Rammali S, Rahim A, El Aalaoui M, Bencharki B, Dari K, Habach A, Abdeslam L, Khattabi A. Antimicrobial potential of Streptomyces coeruleofuscus SCJ isolated from microbiologically unexplored garden soil in Northwest Morocco. Sci Rep 2024; 14:3359. [PMID: 38336871 PMCID: PMC10858231 DOI: 10.1038/s41598-024-53801-x] [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: 09/01/2023] [Accepted: 02/05/2024] [Indexed: 02/12/2024] Open
Abstract
Research on microorganisms in various biotopes is required to identify new, natural potent molecules. These molecules are essential to control the development of multi-drug resistance (MDR). In the present study, a Streptomyces sp., namely SCJ, was isolated from a soil sample collected from a Moroccan garden. SCJ isolate was identified on the basis of a polyphasic approach, which included cultural, micro-morphological, biochemical, and physiological characteristics. The sequence of the 16S rRNA gene of the SCJ strain showed 99.78% similarity to strains of Streptomyces coeruleofuscus YR-T (KY753282.1). The preliminary screening indicated that the SCJ isolate exhibited activity against Candida albicans ATCC 60,193, Escherichia coli ATCC 25,922, Staphylococcus aureus CECT 976, Staphylococcus aureus ATCC 25,923, Bacillus cereus ATCC 14,579, Pseudomonas aeruginosa ATCC 27,853, as well as various other clinical MDR bacteria and five phytopathogenic fungi. The ethyl acetate extract of the isolated strain demonstrated highly significant (p < 0.05) antimicrobial activity against multi-resistant bacteria and phytopathogenic fungi. The absorption spectral analysis of the ethyl acetate extract of the SCJ isolate obtained showed no absorption peaks characteristic of polyene molecules. Moreover, no hemolytic activity against erythrocytes was observed in this extract. GC-MS analysis of the ethyl acetate extract of the SCJ isolate revealed the presence of 9 volatile compounds including 3,5-Dimethylpyrazole, and pyrrolizidine derivatives (Pyrrolo[1,2-a]pyrazine 1,4-dione, hexahydro-3-(2-methylpropyl)), which could potentially explain the antimicrobial activity demonstrated in this study.
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Affiliation(s)
- Said Rammali
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco.
| | - Abdellatif Rahim
- Laboratory of Biochemistry, Neurosciences, Natural Ressources and Environment, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Mohamed El Aalaoui
- Regional Center of Agronomic Research of Settat, Tertiary Road 1406, At 5 Km From Settat, 26400, Settat, Morocco
| | - Bouchaib Bencharki
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Khadija Dari
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Aicha Habach
- Biotechnology Unit, National Institute of Agronomic Research of Rabat, Av. Annasr, 10000, Rabat, Morocco
| | - Lamiri Abdeslam
- Applied Chemistry & Environment Laboratory, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
| | - Abdelkrim Khattabi
- Laboratory of Agro-Alimentary and Health, Faculty of Sciences and Techniques, Hassan First University of Settat, B.P. 539, 26000, Settat, Morocco
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Cocoa Polyphenol Extract Inhibits Cellular Senescence via Modulation of SIRT1 and SIRT3 in Auditory Cells. Nutrients 2023; 15:nu15030544. [PMID: 36771251 PMCID: PMC9921725 DOI: 10.3390/nu15030544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
Cocoa, rich in polyphenols, has been reported to provide many health benefits due to its antioxidant properties. In this study, we investigated the effect of Cocoa polyphenols extract (CPE) against oxidative stress-induced cellular senescence using a hydrogen peroxide (H2O2)-induced cellular senescence model in three auditory cells lines derived from the auditory organ of a transgenic mouse: House Ear Institute-Organ of Corti 1 (HEI-OC1), Organ of Corti-3 (OC-k3), and Stria Vascularis (SV-k1) cells. Our results showed that CPE attenuated senescent phenotypes, including senescence-associated β-galactosidase expression, cell proliferation, alterations of morphology, oxidative DNA damage, mitochondrial dysfunction by inhibiting mitochondrial reactive oxygen species (mtROS) generation, and related molecules expressions such as forkhead box O3 (FOXO3) and p53. In addition, we determined that CPE induces expression of sirtuin 1 (SIRT1) and sirtuin 3 (SIRT3), and it has a protective role against cellular senescence by upregulation of SIRT1 and SIRT3. These data indicate that CPE protects against senescence through SIRT1, SIRT3, FOXO3, and p53 in auditory cells. In conclusion, these results suggest that Cocoa has therapeutic potential against age-related hearing loss (ARHL).
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Facile synthesis of copper oxide nanoparticles (CuONPs) using green method to promote photocatalytic and biocidal applications. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Arokiyaraj C, Parthiban E, Ramanibai R, Janarthanan S. Facile green approach for solar energy assisted biogenic nanoparticles synthesis mediated by seed kernel aqueous extract of Trichosanthes tricupsidata and its potential biomedical applications. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2069121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ruiz-Iglesias P, Massot-Cladera M, Rodríguez-Lagunas MJ, Franch À, Camps-Bossacoma M, Pérez-Cano FJ, Castell M. Protective Effect of a Cocoa-Enriched Diet on Oxidative Stress Induced by Intensive Acute Exercise in Rats. Antioxidants (Basel) 2022; 11:antiox11040753. [PMID: 35453438 PMCID: PMC9028332 DOI: 10.3390/antiox11040753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 02/06/2023] Open
Abstract
Intensive acute exercise can induce oxidative stress, leading to muscle damage and immune function impairment. Cocoa diet could prevent this oxidative stress and its consequences on immunity. Our aim was to assess the effect of a cocoa-enriched diet on the reactive oxygen species (ROS) production by peritoneal macrophages, blood immunoglobulin (Ig) levels, leukocyte counts, and the physical performance of rats submitted to an intensive acute exercise, as well as to elucidate the involvement of cocoa fiber in such effects. For this purpose, Wistar rats were fed either a standard diet, i.e., a diet containing 10% cocoa (C10), or a diet containing 5% cocoa fiber (CF) for 25 days. Then, half of the rats of each diet ran on a treadmill until exhaustion, and 16 h later, the samples were obtained. Both C10 and CF diets significantly prevented the increase in ROS production. However, neither the cocoa diet or the cocoa fiber-enriched diet prevented the decrease in serum IgG induced by acute exercise. Therefore, although the cocoa-enriched diet was able to prevent the excessive oxidative stress induced by intensive exercise, this was not enough to avoid the immune function impairment due to exercise.
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Affiliation(s)
- Patricia Ruiz-Iglesias
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Malén Massot-Cladera
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Maria J. Rodríguez-Lagunas
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Àngels Franch
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Mariona Camps-Bossacoma
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Francisco J. Pérez-Cano
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
- Correspondence: (F.J.P.-C.); (M.C.); Tel.: +34-93-402-45-05 (F.J.P.-C. & M.C.)
| | - Margarida Castell
- Secció de Fisiologia, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona (UB), 08028 Barcelona, Spain; (P.R.-I.); (M.M.-C.); (M.J.R.-L.); (À.F.); (M.C.-B.)
- Institut de Recerca en Nutrició i Seguretat Alimentària (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (F.J.P.-C.); (M.C.); Tel.: +34-93-402-45-05 (F.J.P.-C. & M.C.)
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Beshel JA, Beshel FN, Nwangwa JN, Okon IA, Ejim CI, Owu DU. Cardioprotective Role of Theobroma cacao against Isoproterenol-Induced Acute Myocardial Injury. Cardiovasc Hematol Agents Med Chem 2022; 20:75-80. [PMID: 32940189 DOI: 10.2174/1871525718999200917114954] [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: 03/23/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Antioxidants are beneficial in myocardial infarction (MI). It is suggestive that Theobroma cacao (TC) with rich antioxidant properties can be of health benefits in myocardial injury. AIM The study investigated the effect of Theobroma cacao on cardioprotection in isoproterenol-induced myocardial infarction in rats. MATERIAL AND METHODS Male Wistar rats divided into four groups of 6 rats were used for the study. In group 1, 0.9% normal saline placebo was administered via oral gavage to the control. Group 2 was the MI induced group that was given 100 mg/kg body weight isoproterenol subcutaneously twice at an interval of 24 hours. Group 3 was administered TC for 2 weeks at 100 mg/kg bodyweight via the oral route. Group 4 was pretreated with TC (100 mg/kg) via oral route for 2 weeks, immediately followed by the administration of 100 mg/kg body weight isoproterenol subcutaneously twice at an interval of 24 hours. The rats were sacrificed using chloroform anesthesia, and blood samples collected via cardiac puncture. The serum was analyzed for troponin level, lactate dehydrogenase (LDH), and malondialdehyde (MDA) level. RESULTS The serum troponin, LDH, and MDA levels were found to be significantly (p<0.01) increased in the MI group compared with the control. Pretreatment with TC before MI induction significantly (p<0.01) prevented increased serum troponin, LDH, and MDA levels when compared with the MI group. There was also a significant (p<0.01) decrease in MDA in the TC group compared with the control. CONCLUSION These results suggest that Theobroma cacao protects against isoproterenol-induced myocardial injury, possibly by preventing oxidative stress and consequent lipid peroxidation.
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Affiliation(s)
- Justin Atiang Beshel
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar - Nigeria.,Department of Physiology, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Ishaka - Bushenyi District, Uganda
| | - Favour Nyoh Beshel
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar - Nigeria.,Department of Physiology, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Ishaka - Bushenyi District, Uganda
| | - Justina Nwandimma Nwangwa
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar - Nigeria
| | - Idara Asuquo Okon
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar - Nigeria
| | - Clement Ikani Ejim
- Department of Physiology, Faculty of Basic Medical Sciences, Abia State University, Uturu - Nigeria
| | - Daniel Udofia Owu
- Department of Physiology, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Ishaka - Bushenyi District, Uganda
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Green Synthesis of Mn + Cu Bimetallic Nanoparticles Using Vinca rosea Extract and Their Antioxidant, Antibacterial, and Catalytic Activities. CRYSTALS 2022. [DOI: 10.3390/cryst12010072] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This article outlines the preparation of manganese-doped copper nanoparticles (Mn + Cu NPs) using Vinca rosea (L.) leaf extract as a convenient and environmentally friendly substance. UV–vis, FT–IR, XRD, SEM–EDAX, and DLS instrumental techniques were employed to describe the physical and chemical properties of synthesized V. rosea extract-mediated Vr-Mn + Cu NPs. The synthesized Vr-Mn + Cu NPs were observed to be monodispersed and spherical, with an average size of 412 nm. The plant extract includes a variety of phytochemical components. The Vr-Mn + Cu NPs also have potential antioxidant and antibacterial properties against selected pathogens. The green synthesized Vr-Mn + Cu NPs showed a maximum inhibition zone of 16.33 ± 0.57 mm against E. coli. For dye degradation, MR, EBT, and MO showed the highest degradation percentage capabilities with Vr-Mn + Cu NP-based adsorbents, which were determined to be 78.54 ± 0.16, 87.67 ± 0.06, and 69.79 ± 0.36. The results clearly show that biosynthesized Vr-Mn + Cu NPs may be employed as an antioxidant, antibacterial, photocatalytic dye degradation, and catalytic agent, as well as being ecologically benign.
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Rehman K, Ali I, El-Haj BM, Kanwal T, Maharjan R, Saifullah S, Imran M, Shafiullah, Usman Simjee S, Raza Shah M. Synthesis of novel biocompatible resorcinarene based nanosized dendrimer-vesicles for enhanced anti-bacterial potential of quercetin. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116921] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Ur Rehman K, Tahir K, Al-Abdulkarim HA, Saleh EAM, Alosaimi AM, Hussein MA, Khan AU, Khan ZUH, Nazir S, Zaman U. Photoinhibition and photocatalytic response of surfactant mediated Pt/ZnO nanocomposite. Photodiagnosis Photodyn Ther 2021; 35:102458. [PMID: 34325079 DOI: 10.1016/j.pdpdt.2021.102458] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/18/2021] [Accepted: 07/22/2021] [Indexed: 11/20/2022]
Abstract
Water pollution and bacterial resistance are universal problems. Drugs and protocols have been employed to deal with involved microbes and pollutants but these customary chemicals have many limitations. It is essential to produce new methods and materials to deal with these deleterious microbes. In the present contribution, highly efficient and stable nanocomposite of platinum activated zinc oxide was synthesized by a new plant extract and surfactant assisted protocol. The cetylpyridinium chloride was applied as surfactant to obtain high dispersion of spherical ZnO. The platinum ions were reduced on the ZnO surface by the use of Rhazya stricta plant extract. The prepared nanomaterial was used for photoinactivation of multidrug resistant bacterium Escherichia coli (E. coli). The synthesized nanomaterial showed strong E. coli inhibition efficiency in the presence of light and the observed diameter of zone of inhibition was 21 ±0.4. The effect of light on the inhibition of E.coli was studied by measuring the activated oxygen radicals inside the bacterium cell. The surface morphology of E.coli before and after treatment with Pt/ZnO was studied by SEM. Such effect was not observed in dark. The toxicity of the synthesized nanomaterials was also studied through haemolytic activity and the result shows that the nanomaterial prepared by the said method has very low toxicity. The photocatalytic degradation of methylene blue (MB) was also investigated in the presence of the synthesized nanomaterials. Effect of different parameters such as concentration of Pt/ZnO, Irradiation time and dye concentrations were also studied. An incredible photocatalytic deprivation of MB (98 %) was observed for Pt/ZnO nanocomposite as compared to individual Pt (48%) and ZnO (71%) nanoparticles after 5 minutes of irradiations. Further research is required to investigate the applications of Pt/ZnO nanocomposite.
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Affiliation(s)
- Khalil Ur Rehman
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
| | - Kamran Tahir
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan.
| | - Hessah A Al-Abdulkarim
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ebraheem Abdu Musad Saleh
- Department of Chemistry, College of Arts and Sciences, Prince Sattam Bin Abdulaziz University, Wadi Al-Dawasir 11991, Saudi Arabia
| | - Abeer M Alosaimi
- Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mahmoud A Hussein
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia,; Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516 Egypt
| | - Afaq Ullah Khan
- State Key Laboratory of Chemical Resource Engineering, School of Science, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Zia Ul Haq Khan
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus 61100, Pakistan
| | - Sadia Nazir
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
| | - Umber Zaman
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
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Molehin OR, Adefegha SA. White Butterfly (Clerodendrum volubile) leaves and antioxidant potential in toxicity. Toxicology 2021. [DOI: 10.1016/b978-0-12-819092-0.00033-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kellett ME, Greenspan P, Gong Y, Pegg RB. Cellular evaluation of the antioxidant activity of U.S. Pecans [Carya illinoinensis (Wangenh.) K. Koch]. Food Chem 2019; 293:511-519. [PMID: 31151642 DOI: 10.1016/j.foodchem.2019.04.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 04/14/2019] [Accepted: 04/25/2019] [Indexed: 12/20/2022]
Abstract
Clinical trials show an inverse relationship between the consumption of antioxidant-rich tree nuts and the development of chronic diseases. This study examined antioxidant efficacy of U.S. pecans using a modified cellular antioxidant activity (CAA) assay with comparisons to data from in vitro antioxidant assays (hydrophilic-oxygen radical absorbance capacity {H-ORACFL} and ferric reducing antioxidant power {FRAP}). Crude phenolic extracts from both raw and roasted pecans were analyzed. In the CAA assay, pecan phenolics were taken up by human colorectal adenocarcinoma (Caco-2) cells and bestowed CAA, determined by monitoring the fluorescence of 2',7'-dichlorofluorescein. Phenolics (25-100 μg/mL) demonstrated a reduction in fluorescence by 37-69% for raw and 26-68% for roasted pecans. The primary active phenolic constituents were determined by high-performance liquid chromatography-electrospray ionization-mass spectrometry (HPLC-ESI-MS) to be epi(catechin) dimers and trimers. These oligomeric procyanidins, ranging in size from 560 to 840 g/mol appear to be small enough for cellular uptake, showing pecans are an effective antioxidant in biological systems, regardless of roasting.
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Affiliation(s)
- Mary E Kellett
- Department of Food Science & Technology, College of Agricultural and Environmental Sciences, The University of Georgia, 100 Cedar Street, Athens, GA 30602, USA
| | - Phillip Greenspan
- Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, The University of Georgia, Athens, GA 30602, USA
| | - Yi Gong
- Department of Food Science & Technology, College of Agricultural and Environmental Sciences, The University of Georgia, 100 Cedar Street, Athens, GA 30602, USA
| | - Ronald B Pegg
- Department of Food Science & Technology, College of Agricultural and Environmental Sciences, The University of Georgia, 100 Cedar Street, Athens, GA 30602, USA.
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Parthiban E, Manivannan N, Ramanibai R, Mathivanan N. Green synthesis of silver-nanoparticles from Annona reticulata leaves aqueous extract and its mosquito larvicidal and anti-microbial activity on human pathogens. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2019; 21:e00297. [PMID: 30581768 PMCID: PMC6297187 DOI: 10.1016/j.btre.2018.e00297] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/06/2018] [Indexed: 01/03/2023]
Abstract
Silver nanoparticles play a important role in controlling mosquito population as well as multi drug resistant pathogens without causing much harm to humans. In the present study was focused on green synthesis of silver nanoparticles against dengue causing vector (Aedes aegypti) and pathogens affecting humans. The synthesized silver nanoparticle was confirmed using UV- absorption spectrum range obtained at 416 nm, XRD, FTIR and HR-TEM analysis were used to determine the silver nanoparticle morphology and size with ∼6.48 ± 1.2-8.13 ± 0.18 nm and face centered cubic structure. The synthesized silver nanoparticles were exposed to fourth instar larvae of A. aegypti with different concentration (3-20 μg/mL) for 24 h and its elicit maximum mortality (100%) at their final concentration of 20 μg/mL and it's LC50 value was 4.43 μg/mL and LC90 value was 13.96 μg/mL, respectively. The minimum inhibitory activities of the tested pathogens were 125, 31.25, 62.5, 62.6 and 62.5 μg/mL for the Bacillus cereus, Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albicans respectively. Further, the synthesized silver nanoparticle shows a potent antimicrobial activity against all tested pathogens. Moreover the effect of silver nanoparticle against Red Blood Cells belonging to 'O' positive blood group were tested and does not cause higher hemolysis to the cells even at the highest concentration. Based on these finding, we strongly suggested that face centered cubic structured A. reticulata AgNPs is an eco-friendly and potent bio-medical agent and can be apply in wide range of application an alternative chemically synthesized metal nanoparticle.
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Affiliation(s)
- Ezhumalai Parthiban
- Department of Zoology, Unit of Aquatic Biodiversity, University of Madras, Guindy Campus, 600025, Chennai, India
| | - Nandhagopal Manivannan
- Centre for Advanced Studies in Botany, Unit of Bio control and Metabolites, University of Madras, Guindy Campus, 600025, Chennai, India
| | - Ravichandran Ramanibai
- Department of Zoology, Unit of Aquatic Biodiversity, University of Madras, Guindy Campus, 600025, Chennai, India
| | - Narayanasamy Mathivanan
- Centre for Advanced Studies in Botany, Unit of Bio control and Metabolites, University of Madras, Guindy Campus, 600025, Chennai, India
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Chang TY, Liu KL, Chang CS, Su CT, Chen SH, Lee YC, Chang JS. Ferric Citrate Supplementation Reduces Red-Blood-Cell Aggregation and Improves CD163+ Macrophage-Mediated Hemoglobin Metabolism in a Rat Model of High-Fat-Diet-Induced Obesity. Mol Nutr Food Res 2017; 62. [PMID: 29064631 DOI: 10.1002/mnfr.201700442] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/09/2017] [Indexed: 12/13/2022]
Abstract
SCOPE In adults, >90% of the daily iron requirement is derived from macrophage-mediated heme iron, recycling from senescent red blood cells (RBCs) or free hemoglobin (Hb). Currently, the effects of pharmacological doses of iron supplementation on RBCs and heme iron recycling in obesity are unclear. METHODS AND RESULTS Sprague Dawley rats are fed a standard diet or a 50% high-fat diet (HFD) with (0.25, 1, and 2 g of ferric iron per kg diet) or without ferric citrate supplementation for 12 weeks. Ferric iron increases hepatic iron accumulation in macrophages and hepatocyte-like cells. Compared with rats that received the standard diet, HFD-fed rats exhibit higher RBC aggregation and serum-free Hb levels but lower LVV-hemorphin-7 levels. These effects are reversed by ferric citrate supplementation. Immunofluorescent staining reveals that ferric iron increases the expression of hepatic CD163+ macrophages and heme oxygenase (HO)-1. A further analysis reveals the dose-related effects of ferric iron on hepatic globin degradation proteins (cathepsin D and glyoxalase 1), cytochrome p450 reductase expression, and HO-1 enzyme activity. CONCLUSIONS Ferric citrate supplementation reduces RBC aggregation and improves CD163+ macrophage-mediated Hb metabolism in HFD-induced obese rats. These findings suggest that ferric citrate may be explored as an alternative treatment method for RBC dysfunction.
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Affiliation(s)
- Ting-Yun Chang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Kai-Li Liu
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan.,Department of Dietitian, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Cheng Sheng Chang
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chien-Tien Su
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,School of Public Health, College of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Seu-Hwa Chen
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Chieh Lee
- Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Jung-Su Chang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan.,Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan.,Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
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14
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Rajendran K, Sen S, G. S, Senthil SL, Kumar TV. Evaluation of cytotoxicity of hematite nanoparticles in bacteria and human cell lines. Colloids Surf B Biointerfaces 2017; 157:101-109. [DOI: 10.1016/j.colsurfb.2017.05.052] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/16/2017] [Accepted: 05/20/2017] [Indexed: 11/27/2022]
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15
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Khan FU, Chen Y, Khan NU, Ahmad A, Tahir K, Khan ZU, Khan AU, Khan SU, Raza M, Wan P. Visible light inactivation of E. coli , Cytotoxicity and ROS determination of biochemically capped gold nanoparticles. Microb Pathog 2017; 107:419-424. [DOI: 10.1016/j.micpath.2017.04.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/14/2017] [Accepted: 04/19/2017] [Indexed: 12/23/2022]
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16
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Kenny TP, Keen CL, Jones P, Kung HJ, Schmitz HH, Gershwin ME. Pentameric Procyanidins Isolated from Theobroma cacao Seeds Selectively Downregulate ErbB2 in Human Aortic Endothelial Cells. Exp Biol Med (Maywood) 2016; 229:255-63. [PMID: 14988518 DOI: 10.1177/153537020422900306] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Flavonoids isolated from cocoa have biological activities relevant to oxidant defenses, vascular health, tumor suppression, and immune function. The intake of certain dietary flavonoids, along with other dietary substances such as tocopherols, ascorbate, and carotenoids, is epidemiologically associated with a reduced risk of cardiovascular disease. Flavonoids have also been shown to modulate tumor pathology in vitro and in animal models. We took advantage of the conserved sequences found in tyrosine kinases to study the influence of cocoa fractions and controls on gene expression. We report that the pentameric procyanidin (molecular weight of 1442 daltons) fraction isolated from cocoa was a potent inhibitor of tyrosine kinase ErbB2 expression, a receptor important in angiogenesis regulation. Consistent with this primary observation, the cocoa flavonoid fraction also suppressed human aortic endothelial cell (HAEC) growth and decreased expression of two tyrosine kinases responsive to ErbB2 modulation, namely VEGFR-2/KDR and MapK 11/p38β2. These inhibitory effects were observed when HAECs were treated with the flavonol fraction (molecular weight 280 daltons) isolated from cocoa, which comprise the structural subunits from which the procyanidin flavonoid subclass is biosynthetically constructed. Down-regulation of ErbB2 and inhibition of HAEC growth by cocoa procyanidins may have several downstream implications, including reduced vascular endothelial growth factor (VEGF) activity and angiogenic activity associated with tumor pathology. These results suggest specific dietary flavonoids are capable of selectively inhibiting ErbB2 and therefore may offer important insight into the design of therapeutic agents that target tumors overexpressing ErbB2.
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Affiliation(s)
- Thomas P Kenny
- Division of Rheumatology, Allergy, and Clinical Immunology, University of California at Davis, Davis, California 95616, USA
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17
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Santos JS, Deolindo CTP, Esmerino LA, Genovese MI, Fujita A, Marques MB, Rosso ND, Daguer H, Valese AC, Granato D. Effects of time and extraction temperature on phenolic composition and functional properties of red rooibos (Aspalathus linearis). Food Res Int 2016; 89:476-487. [DOI: 10.1016/j.foodres.2016.08.041] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 08/24/2016] [Accepted: 08/26/2016] [Indexed: 01/04/2023]
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18
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Lamuela-Raventós RM, Romero-Pérez AI, Andrés-Lacueva C, Tornero A. Review: Health Effects of Cocoa Flavonoids. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013205054498] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Flavonoids are phenolic substances widely found in fruits and vegetables. Many epidemiological studies associate the ingestion of flavonoids with a reduced risk of cardiovascular disease and certain types of cancer. These effects are due to the physiological activity of flavonoids in the reduction of oxidative stress, inhibiting low-density lipoproteins (LDL) oxidation and platelet aggregation, acting as vasodilators in blood vessels, inhibiting the adherence of monocytes to the vascular endothelium, promoting fibrinolysis, acting as immunomodulators and anti-inflammatory agents and as inhibitors in the different phases of tumour process. Cocoa is an important source of polyphenols, which comprise 12-18% of its total weight on dry basis; the major phenolic compounds are epicatechin, proanthocyanidins and cate-chin. The levels of flavonoids contained are higher than the ones founds in apples, onions or wine, foods known for their high amount of phenolic compounds. Cocoa and cocoa products are important sources of flavonoids in our diet. In the Dutch population chocolate contributes up to 20% of the total flavonoid intake in adults, and in children the percentage is even higher. The bioavailability of these compounds depends on other food constituents, and their interaction with the food matrix. This article reviews current evidence on the health effects of cocoa flavonoids in our diet. The compiled data supports the premise that the consumption of cocoa flavonoids is beneficial to human health.
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Affiliation(s)
- R. M. Lamuela-Raventós
- Nutrició i Bromatologia, CÈRTA, Facultat de Farmàcia, Universitat de Barcelona, Avinguda Joan XXIII s/n, 08028 Barcelona, Spain,
| | - A. I. Romero-Pérez
- Nutrició i Bromatologia, CÈRTA, Facultat de Farmàcia, Universitat de Barcelona, Avinguda Joan XXIII s/n, 08028 Barcelona, Spain
| | - C. Andrés-Lacueva
- Nutrició i Bromatologia, CÈRTA, Facultat de Farmàcia, Universitat de Barcelona, Avinguda Joan XXIII s/n, 08028 Barcelona, Spain
| | - A. Tornero
- Faculty of Science, Engineering and Environment, School of Environment and Life Sciences, University of Salford, Salford, Greater Manchester M5 4WT, UK
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19
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Surendra T, Roopan SM, Arasu MV, Al-Dhabi NA, Sridharan M. Phenolic compounds in drumstick peel for the evaluation of antibacterial, hemolytic and photocatalytic activities. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 161:463-71. [DOI: 10.1016/j.jphotobiol.2016.06.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/08/2016] [Accepted: 06/09/2016] [Indexed: 01/08/2023]
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20
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Ultra-efficient photocatalytic deprivation of methylene blue and biological activities of biogenic silver nanoparticles. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 159:49-58. [DOI: 10.1016/j.jphotobiol.2016.03.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/03/2016] [Accepted: 03/14/2016] [Indexed: 11/19/2022]
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21
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Badrie N, Bekele F, Sikora E, Sikora M. Cocoa agronomy, quality, nutritional, and health aspects. Crit Rev Food Sci Nutr 2016; 55:620-59. [PMID: 24915358 DOI: 10.1080/10408398.2012.669428] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The history of cocoa and chocolate including the birth and the expansion of the chocolate industry was described. Recent developments in the industry and cocoa economy were briefly depicted. An overview of the classification of cacao as well as studies on phenotypic and genetic diversity was presented. Cocoa agronomic practices including traditional and modern propagation techniques were reviewed. Nutrition-related health benefits derived from cocoa consumption were listed and widely reviewed. The specific action of cocoa antioxidants was compared to those of teas and wines. Effects of adding milk to chocolate and chocolate drinks versus bioavailability of cocoa polyphenols were discussed. Finally, flavor, sensory, microbiological, and toxicological aspects of cocoa consumption were presented.
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Affiliation(s)
- Neela Badrie
- a Faculty of Food and Agriculture, Department of Food Production , The University of the West Indies , St. Augustine , Republic of Trinidad and Tobago
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22
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Tahir K, Nazir S, Ahmad A, Li B, Ali Shah SA, Khan AU, Khan GM, Khan QU, Haq Khan ZU, Khan FU. Biodirected synthesis of palladium nanoparticles using Phoenix dactylifera leaves extract and their size dependent biomedical and catalytic applications. RSC Adv 2016. [DOI: 10.1039/c6ra11409a] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphical representation of green synthesis of PdNPs and their biological and catalytic applications.
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23
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Upadhyay J, Kumar A, Gogoi B, Buragohain A. Antibacterial and hemolysis activity of polypyrrole nanotubes decorated with silver nanoparticles by an in-situ reduction process. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 54:8-13. [DOI: 10.1016/j.msec.2015.04.027] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 01/08/2015] [Accepted: 04/21/2015] [Indexed: 12/21/2022]
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24
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Nazima B, Manoharan V, Miltonprabu S. Oxidative stress induced by cadmium in the plasma, erythrocytes and lymphocytes of rats: Attenuation by grape seed proanthocyanidins. Hum Exp Toxicol 2015; 35:428-47. [PMID: 26089033 DOI: 10.1177/0960327115591376] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The present study has been designed to investigate the ameliorative effect of grape seed proanthocyanidins (GSP) on cadmium (Cd)-induced oxidative damage in rat erythrocytes. Twenty four male Wistar rats were divided into four groups: control, GSP-treated group (100 mg kg(-1) body weight (BW)), Cd-treated group (cadmium chloride, 5 mg kg(-1) BW), and GSP + Cd-treated group in which GSP was orally pre-administered 90 min before Cd intoxication for 4 weeks. At the end of the experimental period, blood samples were collected by cardiac puncture and were processed for various biochemical estimations. The extent of oxidative damage in isolated rat erythrocyte membrane was assessed by measuring lipid peroxidation, enzymatic and non-enzymatic content, calcium ion (Ca(2+))/magnesium ion (Mg(2+))-ATPase and sodium ion (Na(+))/potassium ion (K(+))-ATPase activities, free iron, calcium, hydrogen peroxide (H2O2) concentration, and osmotic fragility. Our results unveiled that Cd intoxication significantly increased the erythrocyte lipid peroxidation markers and decreased the activity of enzymatic and non-enzymatic markers in erythrocytes. Conversely, GSP pretreatment significantly prevented the decrease in the activities of antioxidant enzymes and membrane-bound ATPases. GSP also restored the levels of iron, calcium, and H2O2 in Cd-treated rats. Conformational changes in erythrocytes of various groups were also determined using morphological and ultrastructural electron microscopic analysis. The findings of our study clearly revealed that GSP affords superior protection against Cd-induced reactive oxygen species generation, lipid peroxidation, and free radical generation in Cd-treated rats, which presumably reflects the ability of this flavonoid to protect erythrocytes and lymphocytes of rats from the toxic effects of Cd.
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Affiliation(s)
- B Nazima
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
| | - V Manoharan
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
| | - S Miltonprabu
- Department of Zoology, Faculty of Science, Annamalai University, Chidambaram, Tamil Nadu, India
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25
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Das D, Choudhury P, Bortahkur L, Gogoi B, Buragohain AK, Dolui SK. Synthesis and characterization of SiO2/polyaniline/Ag core–shell particles and studies of their electrical and hemolytic properties: multifunctional core–shell particles. RSC Adv 2015. [DOI: 10.1039/c4ra14444a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three layers of conducting core–shell nanocomposite particles composed of SiO2/polyaniline (PAni)/Ag were prepared in the presence of silicon dioxide (SiO2) in an aqueous solution containing sodium dodecyl benzenesulfonate (SDBS) as a surfactant.
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Affiliation(s)
- Dhaneswar Das
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
| | - Parag Choudhury
- Department of Chemical Sciences
- Tezpur University
- Tezpur 784028
- India
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26
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Preliminary in vitro and ex vivo evaluation of afzelin, kaempferitrin and pterogynoside action over free radicals and reactive oxygen species. Arch Pharm Res 2014; 38:1168-77. [PMID: 25315635 DOI: 10.1007/s12272-014-0487-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 09/22/2014] [Indexed: 12/26/2022]
Abstract
Biological activities of flavonoids have been extensively reviewed in literature. The biochemical profile of afzelin, kaempferitrin, and pterogynoside acting on reactive oxygen species was investigated in this paper. The flavonoids were able to act as scavengers of the superoxide anion, hypochlorous acid and taurine chloramine. Although flavonoids are naturally occurring substances in plants which antioxidant activities have been widely advertised as beneficial, afzelin, kaempferitrin, and pterogynoside were able to promote cytotoxic effect. In red blood cells this toxicity was enhanced, depending on flavonoids concentration, in the presence of hypochlorous acid, but reduced in the presence of 2,2'-azo-bis(2-amidinopropane) free radical. These flavonoids had also promoted the death of neutrophils, which was exacerbated when the oxidative burst was initiated by phorbol miristate acetate. Therefore, despite their well-known scavenging action toward free radicals and oxidants, these compounds could be very harmful to living organisms through their action over erythrocytes and neutrophils.
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27
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Li S, Huang R, Shah NP, Tao X, Xiong Y, Wei H. Antioxidant and antibacterial activities of exopolysaccharides from Bifidobacterium bifidum WBIN03 and Lactobacillus plantarum R315. J Dairy Sci 2014; 97:7334-43. [PMID: 25282420 DOI: 10.3168/jds.2014-7912] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 07/22/2014] [Indexed: 01/18/2023]
Abstract
The objective of this study was to investigate the antioxidant and antibacterial activities of exopolysaccharide (EPS) from Bifidobacterium bifidum WBIN03 (B-EPS) and Lactobacillus plantarum R315 (L-EPS). The 1,1-diphenyl-2-picrylhydrazyl (DPPH)-radical scavenging, hydroxyl radical-scavenging, and superoxide radical-scavenging abilities were measured to evaluate antioxidant activity. Inhibition of erythrocyte hemolysis and lipid peroxidation was also measured. Both B-EPS and L-EPS had strong scavenging ability against DPPH and superoxide radicals at high concentration. The inhibitory effect of B-EPS on erythrocyte hemolysis was stronger than that of L-EPS in a concentration range from 0.30 to 1.00 mg/mL, whereas the hydroxyl scavenging ability of L-EPS (39.15 ± 0.58%) was significantly higher than that of 0.15 mg/mL ascorbic acid (24.33 ± 1.17%) and B-EPS (17.89 ± 3.30%) at 0.10 mg/mL. The inhibition of lipid peroxidation of 0.50 mg/mL B-EPS and L-EPS was 13.48 ± 1.74% and 12.43 ± 0.51%, respectively, values lower than that of ascorbic acid at the same concentration (23.20 ± 1.41%). Furthermore, all these abilities were enhanced in a concentration-dependent manner. Agar diffusion assay showed that both EPS exhibited antibacterial activities against tested pathogens such as Cronobacter sakazakii, Escherichia coli, Listeria monocytogenes, Staphyloccocus aureus, Candida albicans, Bacillus cereus, Salmonella typhimurium, and Shigella sonnei at 300 μg/mL. In conclusion, both EPS have antimicrobial and antioxidant activities and could have applications in the food industry.
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Affiliation(s)
- Shengjie Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Renhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Nagendra P Shah
- Food and Nutritional Science, School of Biological Science, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
| | - Xueying Tao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Hua Wei
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China.
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28
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Cádiz-Gurrea M, Lozano-Sanchez J, Contreras-Gámez M, Legeai-Mallet L, Fernández-Arroyo S, Segura-Carretero A. Isolation, comprehensive characterization and antioxidant activities of Theobroma cacao extract. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.07.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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29
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Bhattacharya K, Gogoi B, Buragohain A, Deb P. Fe2O3/C nanocomposites having distinctive antioxidant activity and hemolysis prevention efficiency. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:595-600. [DOI: 10.1016/j.msec.2014.05.062] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/30/2014] [Accepted: 05/29/2014] [Indexed: 12/30/2022]
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30
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Hassan HA, El-Kholy WM, Nour SE. Proanthocyanidin as a cytogenetic protective agent against adverse effects of plant growth regulators supplementation in rats. Cytotechnology 2014; 66:585-96. [PMID: 23900525 PMCID: PMC4082783 DOI: 10.1007/s10616-013-9607-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 06/12/2013] [Indexed: 12/20/2022] Open
Abstract
The aim of the present study was to investigate the protective role of grape seed extract (containing proanthocyandin) against the adverse effects of plant growth regulators (GA3 (gibberellic acid) and IAA (indoleacetic acid)). The present data showed that the administration of either GA3 and IAA caused undesirable changes in both hepatic and testicular structure. This was evidenced by a disturbed hepatic strands, pyknotic nuclei, central vein with collapsed endothelium, dilatation in bile sinusoids, congested blood vessel, binucleatd hepatocytes, lymphocytic infiltration, vacuolation, giant hepatic cells, increased Kupffer cells and karyoryxis. Additionally, it was shown that degenerative changes in the testis, spermatogenic arrest, moderate tubular necrosis, Leydig cell degeneration and reduction in the number and size of the seminiferous tubules with some spermatogonia detached from the basement membrane. Concerning flow cytometric study of the liver a significant decrease in G0/1 % and a significant increase in S phase %, G2/M %, P(53) % and apoptosis % (sub G1) were detected. However, in testis the data recorded a significant decrease in the percentage of mature sperm (percentage of haploid cells) and a significant increase in the percentage of spermatide, diploid cells, P(53) and of apoptotic cells. On the other hand, a distinct recovery of the mentioned hepatic and testicular histopathological and cytogenetic disorders was observed when proanthocyanidin was supplemented to rats administered either of the plant growth hormones (GA3 and IAA).
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Affiliation(s)
- Hanaa A Hassan
- Physiology Division, Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt,
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31
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Narotzki B, Reznick AZ, Mitki T, Aizenbud D, Levy Y. Enhanced Cardiovascular Risk and Altered Oxidative Status in Elders with Moderate Excessive Body Fat. Rejuvenation Res 2014; 17:334-40. [DOI: 10.1089/rej.2013.1540] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Baruch Narotzki
- Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
| | - Abraham Z. Reznick
- Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
| | | | - Dror Aizenbud
- Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
- Rambam Health Care Campus, Haifa, Israel
| | - Yishai Levy
- Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
- Rambam Health Care Campus, Haifa, Israel
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32
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Vertuani S, Scalambra E, Vittorio T, Bino A, Malisardi G, Baldisserotto A, Manfredini S. Evaluation of antiradical activity of different cocoa and chocolate products: relation with lipid and protein composition. J Med Food 2014; 17:512-6. [PMID: 24433077 DOI: 10.1089/jmf.2013.0110] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Chocolate antioxidant properties are often claimed; however, they are frequently different from the parent natural sources due to the industry or artisan transformation. In particular, antioxidant property of chocolate and cocoa are not adequately taken into consideration by consumers who normally make use of this food just for its flavor and taste properties. In this study, we have investigated the antioxidant capacity and total phenolic content of cocoa nibs, cocoa masses, and corresponding chocolate bars with different percentages of cocoa from different origins. The antioxidant capacity of the different samples was measured by two different assays [1,1-diphenyl-2-picryl-hydrazyl radical (DPPH) and ferric reducing antioxidant of potency (FRAP) tests]. The Folin-Ciocalteu reagent was used to assess the total phenolic content. The masses showed a higher antioxidant power than the nibs, and this has been attributed to the fact that in the nibs is still present the lipid part, which will form the cocoa butter. The influence of milk, whey, and soy proteins was also investigated. Our results showed that the extra dark cocoa bar, 100% cocoa chocolate, is the best in terms of total polyphenol content and in terms of antioxidant capacity according to the DPPH and FRAP tests. In addition, the bars of organic dark chocolate 80%, dark Tanzania 80%, and Trinidad 80% products are well performing in all respects. As highlighted by us, the antiradical properties of cocoa products are higher than many antioxidant supplements in tablets.
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Affiliation(s)
- Silvia Vertuani
- 1 Department of Life Sciences and Biotechnology, Section of Medicinal and Health Products, University of Ferrara , Ferrara, Italy
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33
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Messaoudi M, Bisson JF, Nejdi A, Rozan P, Javelot H. Antidepressant-like effects of a cocoa polyphenolic extract in Wistar–Unilever rats. Nutr Neurosci 2013; 11:269-76. [DOI: 10.1179/147683008x344165] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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34
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Martín MÁ, Fernández-Millán E, Ramos S, Bravo L, Goya L. Cocoa flavonoid epicatechin protects pancreatic beta cell viability and function against oxidative stress. Mol Nutr Food Res 2013; 58:447-56. [DOI: 10.1002/mnfr.201300291] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 07/23/2013] [Accepted: 07/25/2013] [Indexed: 12/29/2022]
Affiliation(s)
- María Ángeles Martín
- Departamento de Metabolismo y Nutrición; Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN - CSIC); Madrid Spain
- Centro de Investigación Biomédica en red de Diabetes y Enfermedades Metabólicas Asociadas (ISCIII); Madrid Spain
| | - Elisa Fernández-Millán
- Centro de Investigación Biomédica en red de Diabetes y Enfermedades Metabólicas Asociadas (ISCIII); Madrid Spain
| | - Sonia Ramos
- Departamento de Metabolismo y Nutrición; Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN - CSIC); Madrid Spain
| | - Laura Bravo
- Departamento de Metabolismo y Nutrición; Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN - CSIC); Madrid Spain
| | - Luis Goya
- Departamento de Metabolismo y Nutrición; Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN - CSIC); Madrid Spain
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35
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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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Dong XQ, Zou B, Zhang Y, Ge ZZ, Du J, Li CM. Preparation of A-type proanthocyanidin dimers from peanut skins and persimmon pulp and comparison of the antioxidant activity of A-type and B-type dimers. Fitoterapia 2013; 91:128-139. [PMID: 24001713 DOI: 10.1016/j.fitote.2013.08.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/24/2013] [Accepted: 08/26/2013] [Indexed: 11/30/2022]
Abstract
We have established a simple method for preparing large quantities of A-type dimers from peanut skin and persimmon for further structure-activity relationship study. Peanut skins were defatted with hexane and oligomeric proanthocyanidins were extracted from it with 20% of methanol, and the extract was fractionated with ethyl acetate. Persimmon tannin was extracted from persimmon with methanol acidified with 1% hydrochloric acid, after removing the sugar and small phenols, the high molecular weight persimmon tannin was partially cleaved with 6.25% hydrochloric acid in methanol. The ethyl acetate fraction from peanut skins and persimmon tannin cleaved products was chromatographed on AB-8 macroporous resin followed by Toyopearl HW-50F resin to yield about 378.3mg of A-type (epi)catechin (EC) dimer from 1 kg dry peanut skins and 34.3mg of A-type (epi)catechin-3-O-gallate (ECG) dimer and 37.7 mg of A-type (epi)gallocatechin-3-O-gallate (EGCG) dimer from 1 kg fresh persimmon fruit. The antioxidant properties of the A-type and B-type dimers were compared in five different assays, namely, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, 2,2-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical, hydroxyl radical, lipid peroxidation in mice liver homogenate and erythrocyte hemolysis in rat blood. Our results showed that both A-type and B-type dimers showed high antioxidant potency in a dose-dependent manner. In general, B-type dimers showed higher radical scavenging potency than A-type ones with the same subunits in aqueous systems. But in tissue or lipid systems, A-type dimers showed similar or even higher antioxidant potency than B-type ones.
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Affiliation(s)
- Xiao-Qian Dong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Zou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ying Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhen-Zhen Ge
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jing Du
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chun-Mei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Ministry of Education, China.
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Min TS, Park MJ, Moon JH, Kim WS, Lee SH, Cho YD, Park SH. Bio-active Substances and Physiological Activity of Pears. ACTA ACUST UNITED AC 2013. [DOI: 10.3839/jabc.2013.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fu Z, Yuskavage J, Liu D. Dietary flavonol epicatechin prevents the onset of type 1 diabetes in nonobese diabetic mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4303-9. [PMID: 23578364 PMCID: PMC3660227 DOI: 10.1021/jf304915h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Type 1 diabetes (T1D) is an autoimmune disease characterized by the selective destruction of pancreatic β-cells. Although successful islet transplantation provides a promising treatment, high cost, lack of donor organs, immune-mediated destruction of transplanted islets, and side effects from immunosuppressive drugs greatly limit its uses. Therefore, the search for novel and cost-effective agents that can prevent or ameliorate T1D is extremely important to decrease the burden of T1D. In this study, we discovered that epicatechin (EC, 0.5% in drinking water), a flavonol primarily in cocoa, effectively prevented T1D in nonobese diabetic (NOD) mice. At 32 weeks of age, 66.7% of control mice had overt diabetes, whereas only 16.6% of EC-treated mice became diabetic. Consistently, EC mice had significantly higher plasma insulin levels but lower glycosylated hemoglobin concentrations compared to control mice. EC had no significant effects on food or water intake and body weight gain in NOD mice, suggesting that EC's effect was not due to alterations in these variables. Treatment with EC elevates circulating anti-inflammatory cytokine interleukin-10 levels, ameliorates pancreatic insulitis, and improves pancreatic islet mass. These findings demonstrate that EC may be a novel, plant-derived compound capable of preventing T1D by modulating immune function and thereby preserving islet mass.
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Affiliation(s)
- Zhuo Fu
- Department of Human Nutrition, Foods and Exercise, College of Agriculture and Life Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
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Roy B, Bharali P, Konwar BK, Karak N. Silver-embedded modified hyperbranched epoxy/clay nanocomposites as antibacterial materials. BIORESOURCE TECHNOLOGY 2013; 127:175-180. [PMID: 23131638 DOI: 10.1016/j.biortech.2012.09.129] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 08/31/2012] [Accepted: 09/28/2012] [Indexed: 06/01/2023]
Abstract
Silver-embedded modified hyperbranched epoxy/clay nanocomposites were prepared at different wt.% of octadecyl amine-modified montmorillonite at a constant silver concentration (1 wt.%). UV-visible, XRD and TEM studies confirmed the formation of silver nanoparticles. Compared to the system without silver and clay, the gloss from 70° to 94°, scratch hardness from 4 to 5.8 kg, impact strength from 60 to 90 cm, tensile strength from 8.5 to 15.5 MPa, adhesive strength from 5 to 7.1 × 10(9)N/m, flexibility from >6 to <4mm, and thermostability from 230 to 260 °C increased for the modified system. Resistance to aqueous 10% HCl, 0.5% NaOH, 10% NaCl also increased. The nanocomposites showed antibacterial activity in well diffusion assays against Staphylococcus aureus (ATCC11632), Bacillus subtilis (ATCC11774), Escherichia coli (MTCC40), Pseudomonas aeruginosa (MTCC7814) and Klebsiella pneumoniae (ATCC10031). The results showed that these nanocomposites have potential to be used as antimicrobial materials.
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Affiliation(s)
- Buddhadeb Roy
- Advanced Polymer and Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur, India
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Adesanoye OA, Molehin OR, Delima AA, Adefegha AS, Farombi EO. Modulatory effect of methanolic extract ofVernonia amygdalina(MEVA) on tert-butyl hydroperoxide-induced erythrocyte haemolysis. Cell Biochem Funct 2012. [DOI: 10.1002/cbf.2933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Omolola A. Adesanoye
- Drug Metabolism & Toxicology Research Laboratories, Department of Biochemistry, College of Medicine; University of Ibadan; Ibadan; Nigeria
| | - Olorunfemi R. Molehin
- Drug Metabolism & Toxicology Research Laboratories, Department of Biochemistry, College of Medicine; University of Ibadan; Ibadan; Nigeria
| | - Adetutu A. Delima
- Drug Metabolism & Toxicology Research Laboratories, Department of Biochemistry, College of Medicine; University of Ibadan; Ibadan; Nigeria
| | - Adeniyi S. Adefegha
- Drug Metabolism & Toxicology Research Laboratories, Department of Biochemistry, College of Medicine; University of Ibadan; Ibadan; Nigeria
| | - Ebenezer O. Farombi
- Drug Metabolism & Toxicology Research Laboratories, Department of Biochemistry, College of Medicine; University of Ibadan; Ibadan; Nigeria
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Aidoo E, Addai FK, Ahenkorah J, Hottor B, Bugyei KA, Gyan BA. Natural cocoa ingestion reduced liver damage in mice infected with Plasmodium berghei (NK65). Res Rep Trop Med 2012; 3:107-116. [PMID: 30890870 PMCID: PMC6065559 DOI: 10.2147/rrtm.s33149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE This study tested whether natural cocoa powder ingestion could mitigate hepatic injury coincident with murine malaria. Plasmodium berghei infection causes liver damage including hepatic sinusoidal distension, and elevated serum alanine transaminase (ALT) and aspartate transaminase (AST) levels. According to literature, these pathologies largely result from activity of reactive oxygen species (ROS) and may be extenuated by antioxidants. ANIMALS AND METHODS Thirty Balb/c mice were randomly assigned to three equal groups. One of two groups of mice inoculated with 0.2 mL of P. berghei-parasitized red blood cells (RBCs) was given unrestricted 24-hour access to a natural cocoa powder beverage (2% by weight) in place of water. The third group of mice were neither infected nor given cocoa. All mice were fed the same standard chow. After 6 days, mice were sacrificed and their livers processed for histomorphometric assessment of mean hepatic sinusoidal diameter as a quantitative measure of altered morphology. Serum ALT and AST were measured as a gauge of functional impairment. RESULTS Compared with uninfected mice, hepatic sinusoidal diameter in P. berghei-infected mice not given cocoa increased by 150%, whereas a smaller increase of 83% occurred in infected mice that ingested cocoa. Mean serum ALT increased by 127% in infected mice not given cocoa and 80% in infected mice that consumed cocoa, compared with the value for uninfected mice. Similarly, mean serum AST was raised by 141% in infected mice not given cocoa and 93% in infected mice that drank cocoa. CONCLUSION Distension of hepatic sinusoidal diameter in P. berghei-infected mice was reduced by 67%, whereas respective elevations of serum ALT and AST concentrations were reduced by 47% and 48% via ingestion of cocoa. Anti-inflammatory and antioxidant components of cocoa probably mediated the demonstrated hepatoprotective benefit by blunting pernicious ROS activity in P. berghei-infected mice.
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Affiliation(s)
| | | | | | | | - Kwasi A Bugyei
- Department of Pharmacology, University of Ghana Medical School, College of Health Sciences, Korle-Bu, Accra, Ghana
| | - Ben A Gyan
- Department of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Legon, Accra, Ghana
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Vellosa JCR, Regasini LO, Khalil NM, Bolzani VDS, Khalil OAK, Manente FA, Pasquini Netto H, Oliveira OMMDF. Antioxidant and cytotoxic studies for kaempferol, quercetin and isoquercitrin. ECLÉTICA QUÍMICA 2011. [DOI: 10.1590/s0100-46702011000200001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to investigate a cytotoxic oxidative cell stress related and the antioxidant profile of kaempferol, quercetin, and isoquercitrin. The flavonol compounds were able to act as scavengers of superoxide anion (but not hydrogen peroxide), hypochlorous acid, chloramine and nitric oxide. Although flavonoids are widely described as antioxidants and this activity is generally related to beneficial effects on human health, here we show important cytotoxic actions of three well known flavonoids. They were able to promote hemolysis which one was exacerbated on the presence of hypochlorous acid but not by AAPH radical. Therefore, despite they expected scavenger action over free radicals an oxidants, these compounds could be very lesive to living organisms by acting over erythrocytes and maybe other cellular types.
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Kalgaonkar S, Nishioka H, Gross HB, Fujii H, Keen CL, Hackman RM. Bioactivity of a flavanol-rich lychee fruit extract in adipocytes and its effects on oxidant defense and indices of metabolic syndrome in animal models. Phytother Res 2010; 24:1223-8. [PMID: 20309950 DOI: 10.1002/ptr.3137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Many polyphenolic compounds are poorly digested, and have low bioavailability due to their long chain lengths and chemical composition. A processed, flavanol-rich lychee fruit extract (FRLFE) that is higher in flavanol monomers, dimer and trimers than its unprocessed counterpart, was tested in a variety of models. First, mature visceral adipocytes were treated with 0, 3, 10 or 30 microg/mL FRLFE (day 6-8). Compared with the controls, the treated cells had lower triglyceride concentrations, less lipid accumulation and a smaller lipid droplet size. Adiponectin release was significantly greater in cells receiving 3 or 10 microg/mL FRLFE than in the controls. Second, rats given a single dose of 50 or 100 mg/kg FRLFE had significant increases in plasma (-)-epicatechin, 3'-O-methyl-(-)-epicatechin, and (+)-catechin levels, peak values were at approximately 2 h and appreciable concentrations were still detected at 6 h. Rats supplemented daily for 1 week with 50 or 100 mg/kg FRLFE had significantly elevated metabolite concentrations. In response to an oxidative stress, erythrocyte membrane integrity was significantly improved in the 100 mg/kg FRLFE group. Third, 7-month-old mice fed a 200 mg/kg FRLFE diet for 10 months showed a significant decrease in glucose, triglyceride and lipid peroxide levels compared with mice fed a control diet. Collectively, these results support the concept that the flavanols present in FRLFE are well absorbed and bioactive.
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Affiliation(s)
- Swati Kalgaonkar
- Department of Nutrition, University of California, Davis, CA 95616, USA
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Deka H, Karak N, Kalita RD, Buragohain AK. Bio-based thermostable, biodegradable and biocompatible hyperbranched polyurethane/Ag nanocomposites with antimicrobial activity. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.06.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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46
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Shia CS, Hou YC, Tsai SY, Huieh PH, Leu YL, Chao PDL. Differences in pharmacokinetics and ex vivo antioxidant activity following intravenous and oral administrations of emodin to rats. J Pharm Sci 2010; 99:2185-95. [PMID: 19921750 DOI: 10.1002/jps.21978] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Emodin, a natural anthraquinone polyphenol, has been reported to possess promising in vitro antioxidation, anticancer and anti-inflammatory activities. Whether the in vitro bioactivities can predict in vivo effects remained an unanswered question without understanding emodin pharmacokinetics in animals. To fill this blank, this study investigated the biological fate of emodin in rats. Emodin was intravenously (5.0 mg/kg) and orally (20.0 and 40.0 mg/kg) administered to rats. Blood samples were assayed by HPLC before and after hydrolysis with sulfatase and beta-glucuronidase. It is observed that after intravenous bolus of emodin, the parent form of emodin declined rapidly, and emodin glucuronides, omega-hydroxyemodin (omega-OHE) and omega-OHE sulfates/glucuronides all emerged instantaneously. In contrast, when emodin was given orally, emodin glucuronides were exclusively present in serum, whereas emodin, omega-OHE and omega-OHE sulfates/glucuronides were not detected. In order to evaluate the in vivo antioxidation activity, the serum metabolites of emodin following intravenous and oral administrations were prepared from rats and characterized, followed by investigating the effects on 2,2'-azobis(2-amidinopropane hydrochloride)-induced hemolysis. The results suggested that the serum metabolites of oral emodin exhibited more promising free radical scavenging activity than those of intravenous emodin and emodin parent form. We suggest biologists to redirect their targets to emodin glucuronide.
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Affiliation(s)
- Chi-Sheng Shia
- Institute of Pharmaceutical Chemistry, China Medical University, 40402 Taichung, Taiwan
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Martín MA, Ramos S, Mateos R, Izquierdo-Pulido M, Bravo L, Goya L. Protection of human HepG2 cells against oxidative stress by the flavonoid epicatechin. Phytother Res 2009; 24:503-9. [DOI: 10.1002/ptr.2961] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dutta S, Karak N, Saikia JP, Konwar BK. Biocompatible epoxy modified bio-based polyurethane nanocomposites: mechanical property, cytotoxicity and biodegradation. BIORESOURCE TECHNOLOGY 2009; 100:6391-6397. [PMID: 19683433 DOI: 10.1016/j.biortech.2009.06.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 06/09/2009] [Accepted: 06/09/2009] [Indexed: 05/28/2023]
Abstract
Epoxy modified Mesua ferrea L. seed oil (MFLSO) based polyurethane nanocomposites with different weight % of clay loadings (1%, 2.5% and 5%) have been evaluated as biocompatible materials. The nanocomposites were prepared by ex situ solution technique under high mechanical shearing and ultrasonication at room temperature. The partially exfoliated nanocomposites were characterized by Fourier transform infra-red (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The mechanical properties such as tensile strength and scratch hardness were improved 2 and 5 times, respectively by nanocomposites formation. Even the impact resistance improved a little. The thermostability of the nanocomposites was enhanced by about 40 degrees C. Biodegradation study confirmed 5-10 fold increase in biodegradation rate for the nanocomposites compared to the pristine polymers. All the nanocomposites showed non-cytotoxicity as evident from RBC hemolysis inhibition observed in anti-hemolytic assay carried over the sterilized films. The study reveals that the epoxy modified MFLSO based polyurethane nanocomposites deserve the potential to be applicable as biomaterials.
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Affiliation(s)
- Suvangshu Dutta
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
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Stoupi S, Williamson G, Drynan JW, Barron D, Clifford MN. A comparison of the in vitro
biotransformation of (-)-epicatechin and procyanidin B2 by human faecal microbiota. Mol Nutr Food Res 2009; 54:747-59. [DOI: 10.1002/mnfr.200900123] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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