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Dionisi T, Rinninella E, Raoul P, Cintoni M, Mele MC, Gasbarrini G, Pellicano R, Vassallo GA, Gasbarrini A, Addolorato G, Gasbarrini GB. Sorghum (Sorghum vulgare): an ancient grain, a novel choice for a healthy gluten-free diet. Minerva Gastroenterol (Torino) 2024; 70:231-241. [PMID: 36943204 DOI: 10.23736/s2724-5985.23.03300-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Celiac disease (CD) is an autoimmune disease related to gluten consumption. To date, the only effective therapy that can reverse symptoms and prevent complications is the gluten-free diet (GFD), which is challenging to maintain and has potential health risks. Identifying foods that can help diversify the GFD and that best match the nutritional needs of people with CD may improve the health and quality of life of celiac patients. This review, conducted through a non-systematic search of the available literature, aims to gather the most recent research on nutritional issues in CD and GFD. Moreover, it highlights how sorghum characteristics could provide health benefits to CD patients that counteract the nutritional problems due to CD and the nutritional consequences of GFD acceptance. Sorghum contains a wide variety of bioactive compounds, such as flavones and tannins, that have shown anti-inflammatory activity in preclinical studies. They can also regulate blood sugar levels and lower cholesterol to reduce the effects of common chronic diseases such as metabolic and cardiovascular diseases. Because it is gluten-free, its use in making foods for celiac patients is increasing, especially in the United States. In conclusion, sorghum is a fascinating grain with nutritional properties and health benefits for supplementing GFD. However, only one study confirms the short-term safety of sorghum inclusion in the GFD, and further long-term studies with a large sample are needed.
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Affiliation(s)
- Tommaso Dionisi
- Unit of Internal Medicine, Department of Medical and Surgical Sciences, Columbus-Gemelli Hospital, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
| | - Emanuele Rinninella
- Unit of Clinical Nutrition, Department of Medical and Surgical Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
| | - Pauline Raoul
- Unit of Advanced Nutrition in Oncology, Department of Medical and Surgical Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
| | - Marco Cintoni
- Unit of Clinical Nutrition, Department of Medical and Surgical Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
| | - Maria C Mele
- Unit of Advanced Nutrition in Oncology, Department of Medical and Surgical Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
- Department of Translational Medicine and Surgery, Sacred Heart Catholic University, Rome, Italy
| | - Gabriele Gasbarrini
- Department of Agri-Food Sciences and Technologies, University of Bologna, Bologna, Italy
| | - Rinaldo Pellicano
- Department of Gastroenterology and Clinical Nutrition, Molinette Hospital, Città della Salute e della Scienza, Turin, Italy -
| | - Gabriele A Vassallo
- Department of Internal Medicine, Barone Lombardo Hospital, Canicattì, Agrigento, Italy
| | - Antonio Gasbarrini
- Unit of Clinical Nutrition, Department of Medical and Surgical Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
- Department of Translational Medicine and Surgery, Sacred Heart Catholic University, Rome, Italy
- CEMAD Digestive Disease Center, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Giovanni Addolorato
- Unit of Internal Medicine, Department of Medical and Surgical Sciences, Columbus-Gemelli Hospital, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
- CEMAD Digestive Disease Center, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Giovanni B Gasbarrini
- CEMAD Digestive Disease Center, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
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Singh H, Aalam Z, Baheti SR, Chaudhary A, Sharma A, Murthy SN. Exploring Scientific Validation of Millets in Contemporary Healthcare: A Traditional Food Supplement. RECENT ADVANCES IN FOOD, NUTRITION & AGRICULTURE 2024; 15:2-12. [PMID: 38258781 DOI: 10.2174/012772574x265711231109195603] [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: 06/05/2023] [Revised: 09/08/2023] [Accepted: 09/14/2023] [Indexed: 01/24/2024]
Abstract
Millets, small-seeded grasses, are gaining interest for their nutrition and health benefits. This abstract provides a comprehensive overview of millets' pharmacological activities, highlighting their rich bioactive compounds. These compounds, including phenolic compounds, flavonoids, and dietary fibers, contribute to antioxidant effects, safeguarding against chronic diseases. Millets also possess anti-inflammatory properties, potentially alleviating conditions, like arthritis and asthma. They show anti-carcinogenic potential, possibly preventing various cancers' development through mechanisms, like apoptosis induction and inhibiting tumor growth. Moreover, millets offer hypolipidemic and hypoglycemic effects, beneficial for managing conditions, such as dyslipidemia and diabetes. Their high dietary fiber and resistant starch content regulate blood lipids and glucose, reducing the cardiovascular risk. Additionally, millets act as antimicrobials, inhibiting pathogens and serving as natural alternatives to synthetic antimicrobials. They exhibit immunomodulatory effects, enhancing immune function and response. Overall, millets' pharmacological properties, including antioxidant, antiinflammatory, anti-carcinogenic, hypolipidemic, hypoglycemic, antimicrobial, and immunomodulatory traits, position them as functional foods with varied health benefits. Further research can integrate millets into preventive and therapeutic approaches for diverse diseases.
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Affiliation(s)
- Harjeet Singh
- Ministry of Ayush, Government Medical College, India
| | - Zubair Aalam
- Department of Pharmaceutical Technology, MIET, Meerut 25005, U.P. India
| | | | - Anurag Chaudhary
- Department of Pharmaceutical Technology, MIET, Meerut 25005, U.P. India
| | - Alok Sharma
- Department of Pharmaceutical Technology, MIET, Meerut 25005, U.P. India
| | - S N Murthy
- Ministry of Ayush, Government Medical College, India
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3
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Khoddami A, Messina V, Vadabalija Venkata K, Farahnaky A, Blanchard CL, Roberts TH. Sorghum in foods: Functionality and potential in innovative products. Crit Rev Food Sci Nutr 2023; 63:1170-1186. [PMID: 34357823 DOI: 10.1080/10408398.2021.1960793] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Sorghum grain is a staple food for about 500 million people in 30 countries in Africa and Asia. Despite this contribution to global food production, most of the world's sorghum grain, and nearly all in Western countries, is used as animal feed. A combination of the increasingly important ability of sorghum crops to resist heat and drought, the limited history of the use of sorghum in Western foods, and the excellent functional properties of sorghum grain in healthy diets, suggests a greater focus on the development of new sorghum-based foods. An understanding of the structural and functional properties of sorghum grain to develop processes for production of new sorghum-based foods is required. In this review, we discuss the potential of sorghum in new food products, including sorghum grain composition, the functional properties of sorghum in foods, processing of sorghum-based products, the digestibility of sorghum protein and starch compared to other grains, and the health benefits of sorghum. In the potential for sorghum as a major ingredient in new foods, we suggest that the gluten-free status of sorghum is of relatively minor importance compared to the functionality of the slowly digested starch and the health benefits of the phenolic compounds present.
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Affiliation(s)
- Ali Khoddami
- Sydney Institute of Agriculture, School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Valeria Messina
- Sydney Institute of Agriculture, School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
| | | | - Asgar Farahnaky
- Biosciences and Food Technology, School of Science, RMIT University, Melbourne, Victoria, Australia
| | - Christopher L Blanchard
- ARC Industrial Transformation Training Centre for Functional Grains, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Thomas H Roberts
- Sydney Institute of Agriculture, School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales, Australia
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Phenolic Analysis and In Vitro Biological Activity of Red Wine, Pomace and Grape Seeds Oil Derived from Vitis vinifera L. cv. Montepulciano d'Abruzzo. Antioxidants (Basel) 2021; 10:antiox10111704. [PMID: 34829574 PMCID: PMC8615145 DOI: 10.3390/antiox10111704] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 12/23/2022] Open
Abstract
Grape pomace is commonly considered a waste product of monovarietal red wine production. Methods: HPLC-DAD analysis was performed to determine the polyphenol and flavonoid contents of all the extracts obtained from Montepulciano d’Abruzzo red wine and grape skins whereas, GC-MS was applied to the determination of fatty acid composition in grape seeds oil. Biological characterization involves antioxidant and antimicrobial assays for all the extracts and seeds oil; Their ability to inhibit α-glucosidase, α-amylase, α-tyrosinase, and ChE enzymes was also detected, together with anti-inflammatory activity on wine, grape skin extracts, and seeds oil by lipoxygenase (5-LOX) and LPS-stimulated macrophage release assays. Data indicate significative polyphenols content (199.31 ± 7.21 mgGAE/g), antioxidant (CUPRAC assay (1036.98 mgTE/g)), enzymatic inhibition (α-tyrosinase: 151.30 ± 1.20 mgKAE/g) and anti-inflammatory activities for wine-organic extract 2, while the antimicrobial activity of grape skin decoction is higher than those reported by wine extracts on three bacterial strains. Interestingly only dealcoholized wine and wine-aqueous extract exerts inhibitory effects on α-glucosidase (20.62 ± 0.23 mmolACAE/g and 19.81 ± 0.03 mmolACAE/g, respectively), while seeds oil is rich in oleic and linoleic acids. These results confirm the strong antioxidant properties of Montepulciano d’Abruzzo grape pomace, suggesting the potential use of this waste product as functional food supplements in the human diet and in cosmeceutics.
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Nazir Y, Rafique H, Kausar N, Abbas Q, Ashraf Z, Rachtanapun P, Jantanasakulwong K, Ruksiriwanich W. Methoxy-Substituted Tyramine Derivatives Synthesis, Computational Studies and Tyrosinase Inhibitory Kinetics. Molecules 2021; 26:molecules26092477. [PMID: 33922836 PMCID: PMC8122972 DOI: 10.3390/molecules26092477] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 11/27/2022] Open
Abstract
Targeting tyrosinase for melanogenesis disorders is an established strategy. Hydroxyl-substituted benzoic and cinnamic acid scaffolds were incorporated into new chemotypes that displayed in vitro inhibitory effects against mushroom and human tyrosinase for the purpose of identifying anti-melanogenic ingredients. The most active compound 2-((4-methoxyphenethyl)amino)-2-oxoethyl (E)-3-(2,4-dihydroxyphenyl) acrylate (Ph9), inhibited mushroom tyrosinase with an IC50 of 0.059 nM, while 2-((4-methoxyphenethyl)amino)-2-oxoethyl cinnamate (Ph6) had an IC50 of 2.1 nM compared to the positive control, kojic acid IC50 16700 nM. Results of human tyrosinase inhibitory activity in A375 human melanoma cells showed that compound (Ph9) and Ph6 exhibited 94.6% and 92.2% inhibitory activity respectively while the positive control kojic acid showed 72.9% inhibition. Enzyme kinetics reflected a mixed type of inhibition for inhibitor Ph9 (Ki 0.093 nM) and non-competitive inhibition for Ph6 (Ki 2.3 nM) revealed from Lineweaver–Burk plots. In silico docking studies with mushroom tyrosinase (PDB ID:2Y9X) predicted possible binding modes in the catalytic site for these active compounds. Ph9 displayed no PAINS (pan-assay interference compounds) alerts. Our results showed that compound Ph9 is a potential candidate for further development of tyrosinase inhibitors.
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Affiliation(s)
- Yasir Nazir
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Hummera Rafique
- Department of Chemistry, University of Gujrat, Gujrat 50700, Pakistan; (H.R.); (N.K.)
| | - Naghmana Kausar
- Department of Chemistry, University of Gujrat, Gujrat 50700, Pakistan; (H.R.); (N.K.)
| | - Qamar Abbas
- Department of Biology, College of Science, University of Bahrain, Sakhir 32038, Bahrain;
| | - Zaman Ashraf
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
- Correspondence: (Z.A.); (W.R.)
| | - Pornchai Rachtanapun
- Cluster of Agro Bio-Circular Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; (P.R.); (K.J.)
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Kittisak Jantanasakulwong
- Cluster of Agro Bio-Circular Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; (P.R.); (K.J.)
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Warintorn Ruksiriwanich
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
- Cluster of Agro Bio-Circular Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand; (P.R.); (K.J.)
- Cluster of Research and Development of Pharmaceutical and Natural Products Innovation for Human or Animal, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: (Z.A.); (W.R.)
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Diaconeasa Z, Știrbu I, Xiao J, Leopold N, Ayvaz Z, Danciu C, Ayvaz H, Stǎnilǎ A, Nistor M, Socaciu C. Anthocyanins, Vibrant Color Pigments, and Their Role in Skin Cancer Prevention. Biomedicines 2020; 8:E336. [PMID: 32916849 PMCID: PMC7555344 DOI: 10.3390/biomedicines8090336] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 02/05/2023] Open
Abstract
Until today, numerous studies evaluated the topic of anthocyanins and various types of cancer, regarding the anthocyanins' preventative and inhibitory effects, underlying molecular mechanisms, and such. However, there is no targeted review available regarding the anticarcinogenic effects of dietary anthocyanins on skin cancers. If diagnosed at the early stages, the survival rate of skin cancer is quite high. Nevertheless, the metastatic form has a short prognosis. In fact, the incidence of melanoma skin cancer, the type with high mortality, has increased exponentially over the last 30 years, causing the majority of skin cancer deaths. Malignant melanoma is considered a highly destructive type of skin cancer due to its particular capacity to grow and spread faster than any other type of cancers. Plants, in general, have been used in disease treatment for a long time, and medicinal plants are commonly a part of anticancer drugs on the market. Accordingly, this work primarily aims to emphasize the most recent improvements on the anticarcinogenic effects of anthocyanins from different plant sources, with an in-depth emphasis on melanoma skin cancer. We also briefly summarized the anthocyanin chemistry, their rich dietary sources in flowers, fruits, and vegetables, as well as their associated potential health benefits. Additionally, the importance of anthocyanins in topical applications such as their use in cosmetics is also given.
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Affiliation(s)
- Zorița Diaconeasa
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (A.S.); (M.N.); (C.S.)
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania;
| | - Ioana Știrbu
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania;
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania;
| | - Jianbo Xiao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Taipa, Macau 999078, China;
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China
| | - Nicolae Leopold
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania;
| | - Zayde Ayvaz
- Faculty of Marine Science and Technology, Department of Marine Technology Engineering, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey;
| | - Corina Danciu
- Victor Babes University of Medicine and Pharmacy, Department of Pharmacognosy, 2 Eftimie Murgu Sq., 300041 Timisoara, Romania;
| | - Huseyin Ayvaz
- Department of Food Engineering, Engineering Faculty, Canakkale Onsekiz Mart University, 17020 Canakkale, Turkey;
| | - Andreea Stǎnilǎ
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (A.S.); (M.N.); (C.S.)
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania;
| | - Mǎdǎlina Nistor
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (A.S.); (M.N.); (C.S.)
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania;
| | - Carmen Socaciu
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (A.S.); (M.N.); (C.S.)
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania;
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Nehru R, Hsu YF, Wang SF. Electrochemical determination of caffeic acid in antioxidant beverages samples via a facile synthesis of carbon/iron-based active electrocatalyst. Anal Chim Acta 2020; 1122:76-88. [PMID: 32503746 DOI: 10.1016/j.aca.2020.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/29/2020] [Accepted: 05/01/2020] [Indexed: 12/14/2022]
Abstract
An electrochemical method has described for the voltammetric determination and oxidation of caffeic acid (CA) at a glassy carbon electrode (GCE) modified carbon/iron-based active catalyst as a sensing platform. In this study, we have developed a highly sensitive electrochemical CA sensor with f-MWCNTs/α-NaFeO2 composite, which was developed by a simple ultrasonication method. The microstructural features of the f-MWCNTs/α-NaFeO2 composite characterized by different physicochemical and analytical techniques. Under the optimized condition, the developed sensor archive the ultra-sensitivity (44.6859 μA μM-1cm-2) at a lower concentration with excellent linearity (R2 = 0.9943) and which shows low detection limit (LOD = 0.002 μM) and Limit of quantification (LOQ = 0.0068 μM) by using differential pulse voltammetry (DPV) technique. The suggested sensor may improve the effective and efficient platform to the determination of CA in the healthcare system.
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Affiliation(s)
- Raja Nehru
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd, Taipei, 10608, Taiwan.
| | - Yung-Fu Hsu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd, Taipei, 10608, Taiwan.
| | - Sea-Fue Wang
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd, Taipei, 10608, Taiwan.
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Wróbel-Biedrawa D, Grabowska K, Galanty A, Sobolewska D, Żmudzki P, Podolak I. Anti-melanoma potential of two benzoquinone homologues embelin and rapanone - a comparative in vitro study. Toxicol In Vitro 2020; 65:104826. [PMID: 32169436 DOI: 10.1016/j.tiv.2020.104826] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/29/2020] [Accepted: 03/09/2020] [Indexed: 11/30/2022]
Abstract
Rapanone and embelin are simple alkyl benzoquinone derivatives, mainly distributed in the Primulaceae. They have an interesting scope of biological activities including cytotoxicity. As melanoma is one of the most common types of cancer, in many cases resistant to current treatment regimens, the aim of this study was to assess and compare anti-melanoma activity of the two benzoquinones. Cytotoxicity of both compounds towards different melanoma cell lines (A375, HTB140, WM793) and selectivity with respect to normal keratinocytes (HaCaT) were investigated. Furthermore, interactions with a reference chemotherapeutic, doxorubicine, were assessed. Finally, analysis of anti-inflammatory, antioxidant and anti-tyrosinase activities of both benzoquinones was conducted as well. Rapanone showed selective and higher than doxorubicine cytotoxic potential against primary melanoma cell line, WM793. Although embelin was also highly cytotoxic, its selectivity was much poorer. Interestingly, in case of HTB140 and HaCaT cell lines a combination of each benzoquinone with doxorubicine potentiated the cytotoxic potential in a synergistic manner. Embelin revealed higher albumin anti-denaturation potential than rapanone but lower than diclofenac sodium. Anti-hyaluronidase effect of both benzoquinones was higher than quercetin. Both compounds showed antioxidant potential although significantly lower as compared to vitamin C. Finally, neither embelin nor rapanone had any inhibitory effect on tyrosinase.
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Affiliation(s)
- Dagmara Wróbel-Biedrawa
- Department of Pharmacognosy, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
| | - Karolina Grabowska
- Department of Pharmacognosy, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
| | - Agnieszka Galanty
- Department of Pharmacognosy, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
| | - Danuta Sobolewska
- Department of Pharmacognosy, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
| | - Paweł Żmudzki
- Department of Medicinal Chemistry, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
| | - Irma Podolak
- Department of Pharmacognosy, Pharmaceutical Faculty, Medical College, Jagiellonian University, Medyczna 9, 30-688 Cracow, Poland.
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9
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Wang D, Zhu J, Xu JR, Ji DD. Synthesis of N-hydroxycinnamoyl amide derivatives and evaluation of their anti-oxidative and anti-tyrosinase activities. Bioorg Med Chem 2019; 27:114918. [DOI: 10.1016/j.bmc.2019.05.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/15/2019] [Accepted: 05/19/2019] [Indexed: 01/19/2023]
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10
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Abstract
Sorghum contains a wide array of phytochemicals and their levels are affected by the genotype. Phytochemicals identified in sorghum include phenolic acids, flavonoids, condensed tannins, polycosanols, phytosterols, stilbenes, and phenolamides. Most of these phytochemicals are concentrated in the bran fraction and have been shown to have several potential health benefits, which include antidiabetic, cholesterol-lowering, anti-inflammatory, and anticancer properties. This chapter gives an overview of sorghum genetics relevant to phytochemicals, phytochemicals identified in sorghum grain, and their potential health benefits.
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11
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Gür ZT, Şenol FS, Shekfeh S, Orhan İE, Banoğlu E, Çalişkan B. Novel Piperazine Amides of Cinnamic Acid Derivatives as Tyrosinase Inhibitors. LETT DRUG DES DISCOV 2018. [DOI: 10.2174/1570180815666180420105652] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Background:
A series of novel cinnamic acid piperazine amide derivatives has been
designed and synthesized, and their biological activities were also evaluated as potential tyrosinase
inhibitors.
Methods:
Compounds 9, 11 and 17 showed the most potent biological activity (IC50 = 66.5, 61.1
and 66 µM, respectively). In silico docking simulation was performed to position compound 11 into
the Agaricus bisporus mushroom tyrosinase’s active site to determine the putative binding interactions.
Results and Conclusion:
The results indicated that compound 11 could serve as a promising lead
compound for further development of potent tyrosinase inhibitors.
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Affiliation(s)
- Zehra Tuğçe Gür
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Fatma Sezer Şenol
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Suhaib Shekfeh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - İlkay Erdoğan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Erden Banoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - Burcu Çalişkan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Gazi University, Ankara, Turkey
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12
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Rao S, Santhakumar AB, Chinkwo KA, Vanniasinkam T, Luo J, Blanchard CL. Chemopreventive Potential of Cereal Polyphenols. Nutr Cancer 2018; 70:913-927. [PMID: 30273076 DOI: 10.1080/01635581.2018.1491609] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
It has been identified that diet is one of the major contributing factors associated with the development of cancer and other chronic pathologies. In the recent years, supplementing regular diet with food and/or its components that contain chemopreventive properties has been considered an effective approach in reducing the incidence of cancer and other lifestyle associated diseases. This systematic review provides an exhaustive summary of the chemopreventive properties exhibited by everyday dietary ingredients such as rice, barley, oats, and sorghum. The studies both in vitro and in vivo reviewed have highlighted the potential role of their polyphenolic content as chemopreventive agents. Polyphenolic compounds including anthocyanins, tricin, protocatechualdehyde, avenanthramide, and 3-deoxyanthocyanins found in rice, barley, oats, and sorghum, respectively, were identified as compounds with potent bioactivity. Studies demonstrated that cereal polyphenols are likely to have chemopreventive activities, particularly those found in pigmented varieties. In conclusion, findings suggest that the consumption of pigmented cereals could potentially have an important role as a natural complementary cancer preventive therapeutic. However, further studies to develop a complete understanding of the mechanisms by which phenolic compounds inhibit cancerous cell proliferation are warranted.
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Affiliation(s)
- Shiwangni Rao
- a School of Biomedical Sciences , Charles Sturt University , Wagga Wagga , New South Wales , Australia.,b Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Charles Sturt University , Wagga Wagga , New South Wales , Australia
| | - Abishek B Santhakumar
- a School of Biomedical Sciences , Charles Sturt University , Wagga Wagga , New South Wales , Australia.,b Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Charles Sturt University , Wagga Wagga , New South Wales , Australia
| | - Kenneth A Chinkwo
- a School of Biomedical Sciences , Charles Sturt University , Wagga Wagga , New South Wales , Australia.,b Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Charles Sturt University , Wagga Wagga , New South Wales , Australia
| | - Thiru Vanniasinkam
- a School of Biomedical Sciences , Charles Sturt University , Wagga Wagga , New South Wales , Australia
| | - Jixun Luo
- c New South Wales Department of Primary Industries , Yanco Agricultural Institute , Yanco , New South Wales , Australia
| | - Christopher L Blanchard
- a School of Biomedical Sciences , Charles Sturt University , Wagga Wagga , New South Wales , Australia.,b Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Charles Sturt University , Wagga Wagga , New South Wales , Australia
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Jiang H, Hettiararchchy NS, Horax R. Physical properties and estimated glycemic index of protein-enriched sorghum based chips. Journal of Food Science and Technology 2018; 55:891-898. [PMID: 29487430 DOI: 10.1007/s13197-017-2993-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/11/2017] [Accepted: 12/13/2017] [Indexed: 10/18/2022]
Abstract
Sorghum is a gluten-free grain and more attention has been given to the nutritional properties and recently its usage as a wheat replacement in food products. In the present work, protein-enriched sorghum based snack chips, prepared from sorghum meal with soy protein isolates and soy flour to meet the final protein content of 35.7%, were produced. The effect of varying baking powder (1.5-2.5%), dough sheet thickness (0.7-1.7 mm), and baking time (6-12 min) on the physical properties of the snack chips was investigated using a central composite design of response surface methodology. Under baking temperature of 160 °C, with baking powder added, the water activity and puffiness of chips significantly increased. Baking time was the most significant factor for all the parameters detected except for puffiness. The optimized conditions of preparing protein-enriched sorghum chips were baking powder 2.5%, dough sheet thickness 0.7 mm, and baking time 7.66 min. The estimated glycemic index (eGI) of the protein-enriched sorghum chips (eGI = 59.8) was significantly lower than soybean-free sorghum chips. The gluten-free protein-enriched sorghum chips developed could be considered as protein rich with lower intermediate-glycemic index classified healthy snacks and potential commercialization.
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Affiliation(s)
- Hongrui Jiang
- 1Institute of Light Industry and Food Engineering, Guangxi University, Nanning, 530004 China
| | - Navam S Hettiararchchy
- 2Department of Food Science and Institute of Food Science and Engineering, University of Arkansas, 2650 N Young Ave., Fayetteville, AR 72704 USA
| | - Ronny Horax
- 2Department of Food Science and Institute of Food Science and Engineering, University of Arkansas, 2650 N Young Ave., Fayetteville, AR 72704 USA
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Antitumoral, antioxidant, and antimelanogenesis potencies of Hawthorn, a potential natural agent in the treatment of melanoma. Melanoma Res 2018; 26:211-22. [PMID: 26795272 DOI: 10.1097/cmr.0000000000000240] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The lack of an efficient agent that does not have the disadvantage of low activity (kojic acid), high cytotoxicity, and mutagenicity (hydroquinone), poor skin penetration (arbutin), or low stability in formulation (glabridin) led us to continue our research on new antipigmentation/skin-lightening agents. Therefore, research of natural products that can modulate the metabolism of pigmentation is of great interest. Otherwise, malignant melanoma is one of the most aggressive forms of skin cancer, with high metastatic potential, and currently, there is no effective chemotherapy against invasive melanoma. Therefore, it is necessary to develop new drugs with potent activity and weak side effects against melanoma. The in-vitro anticancer effect of hawthorn was analyzed against B16F10 melanoma cells using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The effect of isolated compounds from hawthorn on melanogenesis in B16F10 melanoma cells was investigated by measuring the amounts of melanin and tyrosinase spectrophotometrically at 475 nm. Balb/c mice models inoculated with B16F10 mouse tumor cells were used to evaluate the in-vivo antitumoral potential of hawthorn by assessing its effect on the growth of transplanted tumors. The antioxidant potential of tested samples was evaluated in B16F10 and primary human keratinocyte cells using a cellular antioxidant activity assay. Hawthorn tested samples inhibited effectively the growth of melanoma cells in vitro. Furthermore, it appears that tested samples from hawthorn reduced melanogenesis by inhibiting the tyrosinase activity of B16F10 cells in a dose-dependent manner. In-vivo studies showed that hawthorn total oligomer flavonoids extract treatment at a dose of 150 mg/kg body weight for 21 days in implanted tumor mice resulted in significant inhibition of the tumor growth volume and weight. In addition, tested samples showed significant cellular antioxidant capacity against the reactive oxygen species in B16F10 and primary human keratinocyte cells. Our results indicate that hawthorn could be considered as a promising agent for the treatment of melanoma as it shows antitumor activity in vitro and in vivo. Moreover, hawthorn constituents are shown to be highly effective at inhibiting tyrosinase-mediated melanogenesis in vitro on melanoma cells by preventing oxidation in these cells and without affecting the viability of normal human keratinocyte cells. Then, hawthorn might also be used as a new candidate of natural skin depigmenting agents in skin care products.
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Abstract
Proso millet (Panicum miliaceum) is rich in nutritive components and is widely used as a human food, feed and forage for animals, and fuel. This study investigated the effect of a proso millet extract on the inhibition of tyrosinase, a key enzyme in melanogenesis. High performance liquid chromatography analysis indicated that the proso millet extract contained phenolic tyrosinase inhibitors, such as syringic acid, p-coumaric acid, and ferulic acid. The extract had an IC50 for inhibition of tyrosinase activity of 14.02 mg/mL. A Lineweaver-Burk double reciprocal plot showed that the proso millet extract functioned as a mixed competitive and noncompetitive inhibitor. Proso millet has potential as a tyrosinase inhibitor that may have applications in the cosmetics industry.
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Fujimaki T, Mori S, Horikawa M, Fukui Y. Isolation of proanthocyanidins from red wine, and their inhibitory effects on melanin synthesis in vitro. Food Chem 2017; 248:61-69. [PMID: 29329871 DOI: 10.1016/j.foodchem.2017.12.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/23/2017] [Accepted: 12/07/2017] [Indexed: 11/28/2022]
Abstract
The red wines made from Vitis vinifera were identified as skin-whitening effectors by using in vitro assays. OPCs in the wine were evaluated for tyrosinase activity and melanogenesis. Strong tyrosinase inhibitory activity was observed in fractions with high oligomeric proanthocyanidin (OPC) content. Among OPC dimers, a strong inhibitory effect on tyrosinase was observed with OPCs which contain (+)-catechin as an upper unit. Melanogenesis inhibitory effect was observed with OPCs which have (-)-epicatechin as upper units. Also, OPC trimers, upper and middle units joined with 4 → 8 bonds, showed stronger effects compared to trimers with 4 → 6 linkages. Interestingly, (-)-epicatechin-(4β → 8)-(-)-epicatechin 3-O-gallate, which is a unique component of grapes has potent inhibitory effects on both tyrosinase and melanogenesis. Our data provide structural information about such active compounds. These results suggest that red wines containing OPC, have high melanogenesis inhibitory effect and are supposed to have skin-whitening effect.
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Affiliation(s)
- Takahiro Fujimaki
- Suntory Global Innovation Center Ltd. Research Institute, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Shoko Mori
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Manabu Horikawa
- Bioorganic Research Institute, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
| | - Yuko Fukui
- Suntory Global Innovation Center Ltd. Research Institute, 8-1-1 Seikadai, Seika-cho, Soraku-gun, Kyoto 619-0284, Japan.
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Bio-Guided Isolation of Methanol-Soluble Metabolites of Common Spruce (Picea abies) Bark by-Products and Investigation of Their Dermo-Cosmetic Properties. Molecules 2016; 21:molecules21111586. [PMID: 27879645 PMCID: PMC6272914 DOI: 10.3390/molecules21111586] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/13/2016] [Accepted: 11/15/2016] [Indexed: 11/17/2022] Open
Abstract
Common spruce (Picea abies L.) is a fast-growing coniferous tree, widely used in several countries for the production of sawn wood, timber and pulp. During this industrial exploitation, large quantities of barks are generated as waste materials. The aim of this study was the bio-guided investigation and the effective recovery of methanol-soluble metabolites of common spruce bark for the development of new dermo-cosmetic agents. The active methanol extract was initially fractionated by Centrifugal Partition Chromatography (CPC) using a triphasic solvent system in a step-gradient elution mode. All resulting fractions were evaluated for their antibacterial activity, antioxidant activity and their capability to inhibit tyrosinase, elastase and collagenase activity. In parallel, the chemical composition of each fraction was established by combining a 13C-NMR dereplication approach and 2D-NMR analyses. As a result, fourteen secondary metabolites corresponding to stilbene, flavonoid and phenolic acid derivatives were directly identified in the CPC fractions. A high amount (0.93 g) of E-astringin was recovered from 3 g of crude extract in a single 125 min run. E-Astringin significantly induced the tyrosinase activity while E-piceid, taxifolin, and taxifolin-3′-O-glucopyranoside exhibited significant anti-tyrosinase activity. The above compounds showed important anti-collagenase and antimicrobial activities, thus providing new perspectives for potential applications as cosmetic ingredients.
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Simnadis TG, Tapsell LC, Beck EJ. Effect of sorghum consumption on health outcomes: a systematic review. Nutr Rev 2016; 74:690-707. [PMID: 27694643 DOI: 10.1093/nutrit/nuw036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
CONTEXT Sorghum, an ancient grain originating in Africa, may have health-protective properties that could encourage its consumption among those who do not traditionally consume it. OBJECTIVE The aim of this systematic review was to evaluate the health effects associated with the consumption of sorghum among humans. DATA SOURCES Academic databases were searched for relevant studies published between 1985 and November 2015. STUDY SELECTION Nineteen studies -13 interventional and 6 observational - were identified for inclusion. DATA EXTRACTION Participant characteristics, study country, health outcomes, main findings, and study quality were reported. Interventional and observational studies were summarized separately. RESULTS Studies were divided into those that investigated the effect of sorghum on chronic disease and those that investigated other effects of sorghum on health. There was evidence that the consumption of sorghum attenuated blood glucose responses and decreased the expression of markers of oxidative stress. Sorghum was also observed to be a suitable ingredient for the formulation of oral rehydration solutions and showed potential for use as a medical adjunct to boost immune responses in HIV-positive patients CONCLUSIONS: The implication is that sorghum may have attributes superior to those of other staple grains, indicating its potential for innovative uses in commercial foods. More work is required to elucidate the health effects of sorghum when consumed by population groups that have not been traditional consumers of the grain.
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Affiliation(s)
- Thomas G Simnadis
- T.G. Simnadis, L.C. Tapsell, and E.J. Beck are with the School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, Australia.
| | - Linda C Tapsell
- T.G. Simnadis, L.C. Tapsell, and E.J. Beck are with the School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, Australia
| | - Eleanor J Beck
- T.G. Simnadis, L.C. Tapsell, and E.J. Beck are with the School of Medicine, Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, New South Wales, Australia
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Sorghum [Sorghum bicolor(L.) Moench] Genotypes with Contrasting Polyphenol Compositions Differentially Modulate Inflammatory Cytokines in Mouse Macrophages. J CHEM-NY 2016. [DOI: 10.1155/2016/9640869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
This study sought to characterize and compare anti-inflammatory effects of twenty sorghum accessions with contrasting grain polyphenol concentrations but similar genetic backgrounds (based on a genomewide estimate of relatedness). Cell viability, tumor necrosis factor- (TNF-)α, and interleukin- (IL-) 6 were measured in RAW 264.7 macrophages treated with increasing doses (0, 15, 30, and 60 μg/mL) of sorghum ethanol extracts and stimulated with lipopolysaccharide (LPS). Extract dose had a significant effect on TNF-αand IL-6, with a trend of cytokines decreasing between 0 μg/mL and 15 μg/mL of sorghum extract. Genotype also had a significant effect on the cytokines, with extracts from four accessions significantly decreasing TNF-αand/or IL-6. Cells treated with 3-deoxyanthocyanidin-containing accessions had less cytokine production than non-3-deoxyanthocyanidin accessions, whereas cells treated with proanthocyanidin-containing accessions had more cytokine production than cells treated with nonproanthocyanidin accessions. Additionally, there was a significant effect of theTannin1allele on TNF-αand IL-6. Our results demonstrate that sorghum genotypes differentially modulate induction of inflammatory cytokine production in RAW 264.7 macrophages and that specialty grain has the potential to be tailored by controlling traits at the nucleotide level. This study adds to our knowledge of sorghum health effects and contributes to efforts aimed at developing health-promoting sorghum grain.
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Althwab S, Carr TP, Weller CL, Dweikat IM, Schlegel V. Advances in grain sorghum and its co-products as a human health promoting dietary system. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.08.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Stefoska-Needham A, Beck EJ, Johnson SK, Tapsell LC. Sorghum: An Underutilized Cereal Whole Grain with the Potential to Assist in the Prevention of Chronic Disease. FOOD REVIEWS INTERNATIONAL 2015. [DOI: 10.1080/87559129.2015.1022832] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Effect of milling time on antioxidant compounds and activities of methanol extracts of sorghum [Sorghum bicolor (L.) Moench]. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0238-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Chai WM, Shi Y, Feng HL, Xu L, Xiang ZH, Gao YS, Chen QX. Structure characterization and anti-tyrosinase mechanism of polymeric proanthocyanidins fractionated from kiwifruit pericarp. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6382-6389. [PMID: 24939165 DOI: 10.1021/jf501009v] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To provide information on the structure, activity, and structure-activity relationship of kiwifruit (Actinidia chinensis) pericarp proanthocyanidins (PAs), they were separated into three fractions. These fractions were further identified by MALDI-TOF MS and HPLC-ESI-MS methods. Spectra results revealed that they are complex mixtures of B-type propelargonidins, procyanidins, procyanidins gallate, and prodelphinidins. Enzymatic activity analysis showed that these compounds strongly inhibit the activity of tyrosinase, indicating that they are reversible and mixed-type inhibitors of the enzyme. The results obtained from fluorescence quenching showed PAs inhibit the enzyme activity by interacting with substrate and enzyme. This study confirmed that the mean degree of polymerization (mDP) of PAs produces a positive effect on their anti-tyrosinase activity. In addition, the antioxidant analysis indicated that PAs possess potent antioxidant activity. These conclusions mean kiwifruit pericarp PAs may be explored as insecticides, food preservatives, and cosmetic additives.
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Affiliation(s)
- Wei-Ming Chai
- State Key Laboratory of Cellular Stress Biology, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University , Xiamen 361005, China
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Hung TC, Chang TT, Fan MJ, Lee CC, Chen CYC. In Silico Insight into Potent of Anthocyanin Regulation of FKBP52 to Prevent Alzheimer's Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2014; 2014:450592. [PMID: 24899909 PMCID: PMC4036721 DOI: 10.1155/2014/450592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 01/03/2014] [Accepted: 01/03/2014] [Indexed: 02/01/2023]
Abstract
Alzheimer's disease (AD) is caused by the hyperphosphorylation of Tau protein aggregation. FKBP52 (FK506 binding protein 52) has been found to inhibit Tau protein aggregation. This study found six different kinds of anthocyanins that have high binding potential. After analyzing the docking positions, hydrophobic interactions, and hydrogen bond interactions, several amino acids were identified that play important roles in protein and ligand interaction. The proteins' variation is described using eigenvectors and the distance between the amino acids during a molecular dynamics simulation (MD). This study investigates the three loops based around Glu85, Tyr113, and Lys121-all of which are important in inducing FKBP52 activation. By performing a molecular dynamic simulation process between unbound proteins and the protein complex with FK506, it was found that ligand targets that docked onto the FK1 domain will decrease the distance between Glu85/Tyr113 and Glu85/Lys121. The FKBP52 structure variation may induce FKBP52 activation and inhibit Tau protein aggregation. The results indicate that anthocyanins might change the conformation of FKBP52 during binding. In addition, the purple anthocyanins, such as cyanidin-3-glucoside and malvidin-3-glucoside, might be better than FK506 in regulating FKBP52 and treating Alzheimer's disease.
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Affiliation(s)
- Tzu-Chieh Hung
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan
| | - Tung-Ti Chang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
| | - Ming-Jen Fan
- Department of Biotechnology, Asia University, Taichung 41354, Taiwan
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan
| | - Cheng-Chun Lee
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Calvin Yu-Chian Chen
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung 40402, Taiwan
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López-Alfaro I, González-Arenzana L, López N, Santamaría P, López R, Garde-Cerdán T. Pulsed electric field treatment enhanced stilbene content in Graciano, Tempranillo and Grenache grape varieties. Food Chem 2013; 141:3759-65. [PMID: 23993546 DOI: 10.1016/j.foodchem.2013.06.082] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 06/17/2013] [Accepted: 06/18/2013] [Indexed: 10/26/2022]
Abstract
The purpose of this paper was to study the effect of pulsed electric fields (PEF) on the stilbene content of three grape varieties. For this purpose, four different PEF treatments were applied using a continuous system over three varieties, Graciano, Tempranillo and Grenache, destemmed and crushed. In addition, the influence of PEF on their physicochemical composition was studied. PEF treatments did not affect the pH or total acidity of Graciano, however, musts from Tempranillo and Grenache had higher pH values and lower total acidity. In the three varieties, all treatments resulted in an increase of potassium content, deeper colour intensity and total polyphenol index and lower tonality, more pronounced in the treatments with higher time and energy. The stilbene content of the must significantly increased with respect to the control. This increase depended on the variety and the treatment applied. Tempranillo increased up 200% the total stilbene concentration, Grenache 60% and Graciano 50%. For the three varieties, the treatment with the highest time and energy was the most effective on the total stilbene extraction. These results indicate that PEF could be a suitable technology for obtaining musts with deeper colour and higher phenolic content, including resveratrol and piceid.
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Affiliation(s)
- Isabel López-Alfaro
- Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Ctra. Mendavia-Logroño NA 134, Km. 90, 26071 Logroño, La Rioja, Spain
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Khoddami A, Wilkes MA, Roberts TH. Techniques for analysis of plant phenolic compounds. Molecules 2013; 18:2328-75. [PMID: 23429347 PMCID: PMC6270361 DOI: 10.3390/molecules18022328] [Citation(s) in RCA: 503] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 01/10/2013] [Accepted: 01/31/2013] [Indexed: 01/04/2023] Open
Abstract
Phenolic compounds are well-known phytochemicals found in all plants. They consist of simple phenols, benzoic and cinnamic acid, coumarins, tannins, lignins, lignans and flavonoids. Substantial developments in research focused on the extraction, identification and quantification of phenolic compounds as medicinal and/or dietary molecules have occurred over the last 25 years. Organic solvent extraction is the main method used to extract phenolics. Chemical procedures are used to detect the presence of total phenolics, while spectrophotometric and chromatographic techniques are utilized to identify and quantify individual phenolic compounds. This review addresses the application of different methodologies utilized in the analysis of phenolic compounds in plant-based products, including recent technical developments in the quantification of phenolics.
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Affiliation(s)
- Ali Khoddami
- Department of Plant and Food Sciences, University of Sydney, Sydney, NSW 2006, Australia; E-Mails: (A.K.); (M.A.W.)
| | - Meredith A. Wilkes
- Department of Plant and Food Sciences, University of Sydney, Sydney, NSW 2006, Australia; E-Mails: (A.K.); (M.A.W.)
| | - Thomas H. Roberts
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +61-2-8627-1042; Fax: +61-2-8627-1099
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Woo HJ, Oh IT, Lee JY, Jun DY, Seu MC, Woo KS, Nam MH, Kim YH. Apigeninidin induces apoptosis through activation of Bak and Bax and subsequent mediation of mitochondrial damage in human promyelocytic leukemia HL-60 cells. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vázquez-Araújo L, Chambers IV E, Cherdchu P. Consumer Input for Developing Human Food Products Made with Sorghum Grain. J Food Sci 2012; 77:S384-9. [DOI: 10.1111/j.1750-3841.2012.02917.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fan Q, Jiang H, Yuan ED, Zhang JX, Ning ZX, Qi SJ, Wei QY. Tyrosinase inhibitory effects and antioxidative activities of novel cinnamoyl amides with amino acid ester moiety. Food Chem 2012; 134:1081-7. [DOI: 10.1016/j.foodchem.2012.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 01/21/2012] [Accepted: 03/06/2012] [Indexed: 11/25/2022]
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Presence of tannins in sorghum grains is conditioned by different natural alleles of Tannin1. Proc Natl Acad Sci U S A 2012; 109:10281-6. [PMID: 22699509 DOI: 10.1073/pnas.1201700109] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Sorghum, an ancient old-world cereal grass, is the dietary staple of over 500 million people in more than 30 countries in the tropics and semitropics. Its C4 photosynthesis, drought resistance, wide adaptation, and high nutritional value hold the promise to alleviate hunger in Africa. Not present in other major cereals, such as rice, wheat, and maize, condensed tannins (proanthocyanidins) in the pigmented testa of some sorghum cultivars have been implicated in reducing protein digestibility but recently have been shown to promote human health because of their high antioxidant capacity and ability to fight obesity through reduced digestion. Combining quantitative trait locus mapping, meta-quantitative trait locus fine-mapping, and association mapping, we showed that the nucleotide polymorphisms in the Tan1 gene, coding a WD40 protein, control the tannin biosynthesis in sorghum. A 1-bp G deletion in the coding region, causing a frame shift and a premature stop codon, led to a nonfunctional allele, tan1-a. Likewise, a different 10-bp insertion resulted in a second nonfunctional allele, tan1-b. Transforming the sorghum Tan1 ORF into a nontannin Arabidopsis mutant restored the tannin phenotype. In addition, reduction in nucleotide diversity from wild sorghum accessions to landraces and cultivars was found at the region that codes the highly conserved WD40 repeat domains and the C-terminal region of the protein. Genetic research in crops, coupled with nutritional and medical research, could open the possibility of producing different levels and combinations of phenolic compounds to promote human health.
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Anli RE, Vural N, Kizilet E. An Alternative Method for the Determination of Some of the Antioxidant Phenolics in Varietal Turkish Red Wines. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2008.tb00334.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Emami S, Hosseinimehr SJ, Shahrbandi K, Enayati AA, Esmaeeli Z. Synthesis and Evaluation of 2(3H)-Thiazole Thiones as Tyrosinase Inhibitors. Arch Pharm (Weinheim) 2012; 345:629-37. [DOI: 10.1002/ardp.201200028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 01/22/2012] [Accepted: 03/15/2012] [Indexed: 01/10/2023]
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Manosroi A, Ruksiriwanich W, Kietthanakorn BO, Manosroi W, Manosroi J. Relationship between biological activities and bioactive compounds in the fermented rice sap. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Biological potential of sixteen legumes in China. Int J Mol Sci 2011; 12:7048-58. [PMID: 22072935 PMCID: PMC3211026 DOI: 10.3390/ijms12107048] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 09/16/2011] [Accepted: 10/14/2011] [Indexed: 11/16/2022] Open
Abstract
Phenolic acids have been identified in a variety of legumes including lima bean, broad bean, common bean, pea, jack bean, goa bean, adzuki bean, hyacinth bean, chicking vetch, garbanzo bean, dral, cow bean, rice bean, mung bean and soybean. The present study was carried out with the following aims: (1) to identify and quantify the individual phenolic acid and determine the total phenolic content (TPC); (2) to assess their antioxidant activity, inhibition activities of α-glucosidase, tyrosinase, and formation of advanced glycation endproducts; and (3) to investigate correlations among the phytochemicals and biological activity. Common bean possesses the highest antioxidant activity and advanced glycation endproducts formation inhibition activity. Adzuki bean has the highest α-glucosidase inhibition activity, and mung bean has the highest tyrosinase inhibition activity. There are significant differences in phytochemical content and functional activities among the bean species investigated. Selecting beans can help treat diseases such as dermatological hyperpigmentation illness, type 2 diabetes and associated cardiovascular diseases.
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Free radical-scavenging and tyrosinase-inhibiting activities of extracts from sorghum distillery residue. J Biosci Bioeng 2011; 111:554-6. [DOI: 10.1016/j.jbiosc.2011.01.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 01/05/2011] [Accepted: 01/05/2011] [Indexed: 11/21/2022]
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Takahashi T, Miyazawa M. Synthesis and structure–activity relationships of phenylpropanoid amides of serotonin on tyrosinase inhibition. Bioorg Med Chem Lett 2011; 21:1983-6. [DOI: 10.1016/j.bmcl.2011.02.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 01/31/2011] [Accepted: 02/09/2011] [Indexed: 10/18/2022]
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Mazzio EA, Close F, Soliman KFA. The biochemical and cellular basis for nutraceutical strategies to attenuate neurodegeneration in Parkinson's disease. Int J Mol Sci 2011; 12:506-69. [PMID: 21340000 PMCID: PMC3039966 DOI: 10.3390/ijms12010506] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Revised: 01/05/2011] [Accepted: 01/14/2011] [Indexed: 12/19/2022] Open
Abstract
Future therapeutic intervention that could effectively decelerate the rate of degeneration within the substantia nigra pars compacta (SNc) could add years of mobility and reduce morbidity associated with Parkinson’s disease (PD). Neurodegenerative decline associated with PD is distinguished by extensive damage to SNc dopaminergic (DAergic) neurons and decay of the striatal tract. While genetic mutations or environmental toxins can precipitate pathology, progressive degenerative succession involves a gradual decline in DA neurotransmission/synaptic uptake, impaired oxidative glucose consumption, a rise in striatal lactate and chronic inflammation. Nutraceuticals play a fundamental role in energy metabolism and signaling transduction pathways that control neurotransmission and inflammation. However, the use of nutritional supplements to slow the progression of PD has met with considerable challenge and has thus far proven unsuccessful. This review re-examines precipitating factors and insults involved in PD and how nutraceuticals can affect each of these biological targets. Discussed are disease dynamics (Sections 1 and 2) and natural substances, vitamins and minerals that could impact disease processes (Section 3). Topics include nutritional influences on α-synuclein aggregation, ubiquitin proteasome function, mTOR signaling/lysosomal-autophagy, energy failure, faulty catecholamine trafficking, DA oxidation, synthesis of toxic DA-quinones, o-semiquinones, benzothiazolines, hyperhomocyseinemia, methylation, inflammation and irreversible oxidation of neuromelanin. In summary, it is clear that future research will be required to consider the multi-faceted nature of this disease and re-examine how and why the use of nutritional multi-vitamin-mineral and plant-based combinations could be used to slow the progression of PD, if possible.
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Affiliation(s)
- Elizabeth A Mazzio
- Florida A&M University, College of Pharmacy and Pharmaceutical Sciences, Tallahassee, FL 32307, USA; E-Mails: (E.A.M.); (F.C.)
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Chen LG, Chang WL, Lee CJ, Lee LT, Shih CM, Wang CC. Melanogenesis inhibition by gallotannins from Chinese galls in B16 mouse melanoma cells. Biol Pharm Bull 2010; 32:1447-52. [PMID: 19652388 DOI: 10.1248/bpb.32.1447] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nowadays herbal medicines of skin-whitening cosmetics are popular with women. We attempted to find the whitening activity compounds present in many herbal medicines used for this purpose and discuss their mechanisms in melanin biosynthesis. The 70% acetone extracts of 10 kinds of herbs were investigated for their mushroom tyrosinase activity inhibition. Among these 10 extracts, Chinese galls showed inhibitory activity against tyrosinase, with a 50% inhibitory concentration (IC(50)) value of 22 microg/ml. In a B16 mouse melanoma cell culture assay, Chinese galls dose-dependently inhibited melanin biosynthesis. Using ultraviolet A (UVA) or alpha-melanocyte-stimulating hormone (alpha-MSH) to stimulate B16 cells after Chinese gall treatment, the melanin biosynthesis of B16 cells was inhibited in a dose-dependent manner. The active compounds of Chinese galls were isolated by column chromatography, and the melanin biosynthesis inhibition in B16 melanoma cells was measured. Three gallotannins, 2,3,4,6-tetra-O-galloyl-D-glucopyranose, 1,2,3,6-tetra-O-galloyl-beta-D-glucopyranose, and 1,2,3,4,6-penta-O-galloyl-beta-D-glucopyranose, were isolated from Chinese gall extract, and their IC(50) values of tyrosinase inhibition activity were 54, 30, and 15 muM, respectively. By the mushroom tyrosinase inhibition kinetics assay, the three gallotannins were all determined to be non-competitive inhibitors. These results indicated that Chinese galls inhibit melanin biosynthesis, associated with hyperpigmentation and can be used as skin-whitening cosmetics for skin care.
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Affiliation(s)
- Lih-Geeng Chen
- Graduate Institute of Biomedical and Biopharmaceutical Sciences, College of Life Sciences, National Chiayi University, Chiayi, Taiwan
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Inhibitory effect of quercetin isolated from rose hip (Rosa canina L.) against melanogenesis by mouse melanoma cells. Biosci Biotechnol Biochem 2009; 73:1989-93. [PMID: 19734679 DOI: 10.1271/bbb.90181] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We investigated the effects of compounds isolated from a methanolic extract of rose hips on melanin biosynthesis in B16 mouse melanoma cells and the possible mechanisms responsible for the inhibition of melanin biosynthesis. We found that, among the isolated compounds, quercetin was a particularly potent melanogenesis inhibitor. To reveal the mechanism for this inhibition, the effects on tyrosinase of B16 mouse melanoma were measured. Quercetin decreased the intracellular tyrosinase activity as well as the tyrosinase activity in a cell culture-free system. We also examined the cellular level of tyrosinase protein and found that quercetin dose-dependently inhibited tyrosinase protein expression. We consider from these results that the inhibition of melanogenesis by quercetin was due to the inhibition of both tyrosinase activity and of the protein expression.
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Panich U, Kongtaphan K, Onkoksoong T, Jaemsak K, Phadungrakwittaya R, Thaworn A, Akarasereenont P, Wongkajornsilp A. Modulation of antioxidant defense by Alpinia galanga and Curcuma aromatica extracts correlates with their inhibition of UVA-induced melanogenesis. Cell Biol Toxicol 2009; 26:103-16. [DOI: 10.1007/s10565-009-9121-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2008] [Accepted: 02/27/2009] [Indexed: 11/30/2022]
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Le Mellay-Hamon V, Criton M. Phenylethylamide and phenylmethylamide derivatives as new tyrosinase inhibitors. Biol Pharm Bull 2009; 32:301-3. [PMID: 19182394 DOI: 10.1248/bpb.32.301] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Increased production and accumulation of melanin lead to hyperpigmentation disorders. Several inhibitors of tyrosinase, the key enzyme in melanin synthesis have been developed but exhibited lack of efficiency or some adverse side effects. Therefore, it appears very important to find new agents that will be able to promote inhibition of tyrosinase and pigmentation. In this study, some phenylalkylcinnamide molecules were synthesized and evaluated for their ability to act as tyrosinase inhibitors. Compounds 2 (IC(50)=0.03 mM) and 12 (IC(50)=0.028 mM) showed strong tyrosinase inhibitory potential comparable to standard hydroquinone (IC(50)=0.037 mM). Taken together, compounds 2 and 12 can be considered as good candidates for further investigations to evaluate their effect on the inhibition of melanin synthesis and skin pigmentation.
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López N, Puértolas E, Condón S, Álvarez I, Raso J. Effects of pulsed electric fields on the extraction of phenolic compounds during the fermentation of must of Tempranillo grapes. INNOV FOOD SCI EMERG 2008. [DOI: 10.1016/j.ifset.2007.11.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bawadi HA, Bansode RR, Trappey A, Truax RE, Losso JN. Inhibition of Caco-2 colon, MCF-7 and Hs578T breast, and DU 145 prostatic cancer cell proliferation by water-soluble black bean condensed tannins. Cancer Lett 2007; 218:153-62. [PMID: 15670892 DOI: 10.1016/j.canlet.2004.06.021] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2004] [Revised: 06/04/2004] [Accepted: 06/07/2004] [Indexed: 11/18/2022]
Abstract
The potential anti-angiogenic activities of water-soluble condensed tannins isolated from black beans were evaluated using HEL 299 normal human fibroblast lung cells, Caco-2 colon, MCF-7 and Hs578T breast, and DU 145 human prostatic cancer cells. Condensed tannins at 0.24-24 microM did not affect the growth of normal cells, but dose-dependently induced cancer cell death by apoptosis as shown by a concentration-dependent decrease in ATP and cell gross morphology. After 24h exposure to Caco-2, MCF-7, Hs578T, and DU 145 cancer cells, water-soluble black bean condensed tannins at 24 microM suppressed fetal bovine serum stimulated cell migration, the secretion of matrix metalloproteinase-2 (MMP-2 or gelatinase A), matrix metalloproteinase-9 (MMP-9 or gelatinase B), and vascular endothelial growth factor VEGF(165) receptor expression by the cancer cells in the conditioned media. The potential health enhancing properties of condensed tannins from black beans as inhibitors of angiogenesis is discussed.
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Affiliation(s)
- H A Bawadi
- Food Protein Biotechnology Laboratory, School of Human Ecology, Louisiana State University Agricultural Center, 111 Food Science Building, Baton Rouge, LA 70803, USA
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Lee CW, Son EM, Kim HS, Xu P, Batmunkh T, Lee BJ, Koo KA. Synthetic tyrosyl gallate derivatives as potent melanin formation inhibitors. Bioorg Med Chem Lett 2007; 17:5462-4. [PMID: 17693086 DOI: 10.1016/j.bmcl.2007.07.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Revised: 06/14/2007] [Accepted: 07/09/2007] [Indexed: 11/23/2022]
Abstract
Three tyrosyl gallate derivatives (1-3) with variable hydroxyl substituent at the aromatic ring of tyrosol were synthesized and evaluated as potent inhibitors on tyrosinase activity and melanin formation in melan-a cells. Among three tyrosyl gallate derivatives, 4-hydroxyphenethyl 3,4,5-trihydroxybenote (1) (IC(50)=4.93 microM), 3-hydroxyphenethyl 3,4,5-trihydroxybenote (2) (IC(50)=15.21 microM), and 2-hydroxyphenethyl 3,4,5-trihydroxybenote (3) (IC(50)=14.50 microM) exhibited significant inhibitory effect on tyrosinase activity. Compound 1 was the most active compound, though it did not show the inhibitory effect on melanin formation in melan-a cells. However, compounds 2 (IC(50)=8.94 microM) and 3 (IC(50)=13.67 microM) significantly suppressed the cellular melanin formation without cytotoxicity. This study shows that the position of hydroxyl substituent at the aromatic ring of tyrosol plays an important role in the intracellular regulation of melanin formation in cell-based assay system.
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Affiliation(s)
- Chan Woo Lee
- R&D Center, AmorePacific Corporation, Kyounggi-do 449-729, Republic of Korea
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Parreira RL, Galembeck SE. Computational study of pyrylium cation–water complexes: hydrogen bonds, resonance effects, and aromaticity. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2005.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Okombi S, Rival D, Bonnet S, Mariotte AM, Perrier E, Boumendjel A. Analogues of N-hydroxycinnamoylphenalkylamides as inhibitors of human melanocyte-tyrosinase. Bioorg Med Chem Lett 2006; 16:2252-5. [PMID: 16442796 DOI: 10.1016/j.bmcl.2006.01.022] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2005] [Revised: 01/03/2006] [Accepted: 01/06/2006] [Indexed: 11/21/2022]
Abstract
Melanin play a major role in human skin protection and their biosynthesis is vital. Due to their color, they contribute to the skin pigmentation. Tyrosinase is a key enzyme involved in the first stage of melanin synthesis, catalyzing the transformation of tyrosine to l-dopaquinone. The aim of the present study was to study molecules able to inhibit melanin synthesis through inhibition of tyrosinase and their potential use in treating pigmentation-related disorders. We targeted amides obtained from coupling p-hydroxycinnamic acid derivatives with phenylalkylamines. The biological activity was evaluated on human melanocytes by an assay which measures tyrosine-catalyzed L-Dopa oxidation. The most active amides were: trans-N-caffeoyltyramine, N-dihydrocaffeoyltyramine, and trans-N-dihydro-p-hydroxycinnamoyltyramine which induce complete inhibition at 0.1mM. At the latter concentration, kojic acid, which was used as the reference inhibitor, was inactive.
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Affiliation(s)
- Sabrina Okombi
- Département de Pharmacochimie Moléculaire, UMR-CNRS 5063, Faculté de Pharmacie de Grenoble, 5 avenue de Verdun, BP 138, 38243 Meylan, France
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