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Goswami DG, Singh SK, Okoyeocha EOM, Roney AK, Madadgar O, Tuttle R, Sosna W, Anantharam P, Croutch CR, Agarwal R, Tewari-Singh N. Dermal Exposure to Vesicating Nettle Agent Phosgene Oxime: Clinically Relevant Biomarkers and Skin Injury Progression in Murine Models. J Pharmacol Exp Ther 2024; 388:536-545. [PMID: 37652710 PMCID: PMC10801780 DOI: 10.1124/jpet.123.001718] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 09/02/2023] Open
Abstract
Phosgene oxime (CX), categorized as a vesicating chemical threat agent, causes effects that resemble an urticant or nettle agent. CX is an emerging potential threat agent that can be deployed alone or with other chemical threat agents to enhance their toxic effects. Studies on CX-induced skin toxicity, injury progression, and related biomarkers are largely unknown. To study the physiologic changes, skin clinical lesions and their progression, skin exposure of SKH-1 and C57BL/6 mice was carried out with vapor from 10 μl CX for 0.5-minute or 1.0-minute durations using a designed exposure system for consistent CX vapor exposure. One-minute exposure caused sharp (SKH-1) or sustained (C57BL/6) decrease in respiratory and heart rate, leading to mortality in both mouse strains. Both exposures caused immediate blanching, erythema with erythematous ring (wheel) and edema, and an increase in skin bifold thickness. Necrosis was also observed in the 0.5-minute CX exposure group. Both mouse strains showed comparative skin clinical lesions upon CX exposure; however, skin bifold thickness and erythema remained elevated up to 14 days postexposure in SKH-1 mice but not in C57BL/6 mice. Our data suggest that CX causes immediate changes in the physiologic parameters and gross skin lesions resembling urticaria, which could involve mast cell activation and intense systemic toxicity. This novel study recorded and compared the progression of skin injury to establish clinical biomarkers of CX dermal exposure in both the sexes of two murine strains relevant for skin and systemic injury studies and therapeutic target identification. SIGNIFICANCE STATEMENT: Phosgene oxime (CX), categorized as a vesicating agent, is considered as a potent chemical weapon and is of high military and terrorist threat interest since it produces rapid onset of severe injury as an urticant. However, biomarkers of clinical relevance related to its toxicity and injury progression are not studied. Data from this study provide useful clinical markers of CX skin toxicity in mouse models using a reliable CX exposure system for future mechanistic and efficacy studies.
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Affiliation(s)
- Dinesh G Goswami
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Satyendra K Singh
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Ebenezar O M Okoyeocha
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Andrew K Roney
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Omid Madadgar
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Rick Tuttle
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - William Sosna
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Poojya Anantharam
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Claire R Croutch
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Rajesh Agarwal
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
| | - Neera Tewari-Singh
- Department of Pharmacology and Toxicology, College of Osteopathic Medicine (D.G.G., E.O.M.O., A.K.R., O.M., N.T.-S.) and Department of Biomedical Engineering (S.K.S.), Michigan State University, East Lansing, Michigan; MRIGlobal, Kansas City, Missouri (R.T., W.S., P.A., C.R.C.); and Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado (R.A.)
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Augustyniak A, McMahon H. Effect of Marine-Derived Saccharides on Human Skin Fibroblasts and Dermal Papilla Cells. Mar Drugs 2023; 21:330. [PMID: 37367655 DOI: 10.3390/md21060330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/19/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
The skin is the largest organ of the human body, composed of a diverse range of cell types, non-cellular components, and an extracellular matrix. With aging, molecules that are part of the extracellular matrix undergo qualitative and quantitative changes and the effects, such as a loss of skin firmness or wrinkles, can be visible. The changes caused by the aging process do not only affect the surface of the skin, but also extend to skin appendages such as hair follicles. In the present study, the ability of marine-derived saccharides, L-fucose and chondroitin sulphate disaccharide, to support skin and hair health and minimize the effects of intrinsic and extrinsic aging was investigated. The potential of the tested samples to prevent adverse changes in the skin and hair through stimulation of natural processes, cellular proliferation, and production of extracellular matrix components collagen, elastin, or glycosaminoglycans was investigated. The tested compounds, L-fucose and chondroitin sulphate disaccharide, supported skin and hair health, especially in terms of anti-aging effects. The obtained results indicate that both ingredients support and promote the proliferation of dermal fibroblasts and dermal papilla cells, provide cells with a supply of sulphated disaccharide GAG building blocks, increase ECM molecule production (collagen and elastin) by HDFa, and support the growth phase of the hair cycle (anagen).
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Affiliation(s)
- Aleksandra Augustyniak
- Circular Bioeconomy Research Group, Shannon Applied Biotechnology Centre, Munster Technological University-Kerry, Clash, V92CX88 Tralee, Co. Kerry, Ireland
| | - Helena McMahon
- Circular Bioeconomy Research Group, Shannon Applied Biotechnology Centre, Munster Technological University-Kerry, Clash, V92CX88 Tralee, Co. Kerry, Ireland
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Mirata S, Asnaghi V, Chiantore M, Salis A, Benvenuti M, Damonte G, Scarfì S. Photoprotective and Anti-Aging Properties of the Apical Frond Extracts from the Mediterranean Seaweed Ericaria amentacea. Mar Drugs 2023; 21:306. [PMID: 37233500 PMCID: PMC10224410 DOI: 10.3390/md21050306] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023] Open
Abstract
There is a growing interest in using brown algal extracts thanks to the bioactive substances they produce for adaptation to the marine benthic environment. We evaluated the anti-aging and photoprotective properties of two types of extracts (50%-ethanol and DMSO) obtained from different portions, i.e., apices and thalli, of the brown seaweed, Ericaria amentacea. The apices of this alga, which grow and develop reproductive structures during summer when solar radiation is at its peak, were postulated to be rich in antioxidant compounds. We determined the chemical composition and pharmacological effects of their extracts and compared them to the thallus-derived extracts. All the extracts contained polyphenols, flavonoids and antioxidants and showed significant biological activities. The hydroalcoholic apices extracts demonstrated the highest pharmacological potential, likely due to the higher content of meroditerpene molecular species. They blocked toxicity in UV-exposed HaCaT keratinocytes and L929 fibroblasts and abated the oxidative stress and the production of pro-inflammatory cytokines, typically released after sunburns. Furthermore, the extracts showed anti-tyrosinase and anti-hydrolytic skin enzyme activity, counteracting the collagenase and hyaluronidase degrading activities and possibly slowing down the formation of uneven pigmentation and wrinkles in aging skin. In conclusion, the E. amentacea apices derivatives constitute ideal components for counteracting sunburn symptoms and for cosmetic anti-aging lotions.
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Affiliation(s)
- Serena Mirata
- Department of Experimental Medicine (DIMES), Biochemistry Section, University of Genova, 16132 Genova, Italy; (S.M.); (A.S.); (M.B.); (G.D.)
- Centro 3R, Interuniversity Center for the Promotion of the Principles of the 3Rs in Teaching and Research, 56122 Pisa, Italy
| | - Valentina Asnaghi
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy; (V.A.); (M.C.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Mariachiara Chiantore
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy; (V.A.); (M.C.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Annalisa Salis
- Department of Experimental Medicine (DIMES), Biochemistry Section, University of Genova, 16132 Genova, Italy; (S.M.); (A.S.); (M.B.); (G.D.)
| | - Mirko Benvenuti
- Department of Experimental Medicine (DIMES), Biochemistry Section, University of Genova, 16132 Genova, Italy; (S.M.); (A.S.); (M.B.); (G.D.)
| | - Gianluca Damonte
- Department of Experimental Medicine (DIMES), Biochemistry Section, University of Genova, 16132 Genova, Italy; (S.M.); (A.S.); (M.B.); (G.D.)
| | - Sonia Scarfì
- Centro 3R, Interuniversity Center for the Promotion of the Principles of the 3Rs in Teaching and Research, 56122 Pisa, Italy
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genova, 16132 Genova, Italy; (V.A.); (M.C.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
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Jayawardhana HHACK, Jayawardena TU, Sanjeewa KKA, Liyanage NM, Nagahawatta DP, Lee HG, Kim JI, Jeon YJ. Marine Algal Polyphenols as Skin Protective Agents: Current Status and Future Prospectives. Mar Drugs 2023; 21:md21050285. [PMID: 37233479 DOI: 10.3390/md21050285] [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: 03/31/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
The skin is the outermost anatomical barrier, which plays a vital role in the maintenance of internal homeostasis and protection against physical, chemical, and biological detractors. Direct contact with various stimuli leads to several physiological changes that are ultimately important for the growth of the cosmetic industry. Due to the consequences of using synthetic compounds in skincare and cosmeceutical-related industries, the pharmaceutical and scientific communities have recently shifted their focus to natural ingredients. The nutrient-rich value of algae, which are some of the most interesting organisms in marine ecosystems, has attracted attention. Secondary metabolites isolated from seaweeds are potential candidates for a wide range of economic applications, including food, pharmaceuticals, and cosmetics. An increasing number of studies have focused on polyphenol compounds owing to their promising biological activities against oxidation, inflammation, allergies, cancers, melanogenesis, aging, and wrinkles. This review summarizes the potential evidence of the beneficial properties and future perspectives of using marine macroalgae-derived polyphenolic compounds for advancing the cosmetic industry.
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Affiliation(s)
- H H A C K Jayawardhana
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Thilina U Jayawardena
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, Canada
| | - K K A Sanjeewa
- Faculty of Technology, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - N M Liyanage
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - D P Nagahawatta
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Hyo-Geun Lee
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jae-Il Kim
- Department of Food Science and Nutrition, Pukyong National University, Busan 608-737, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
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Shin HC, Kim Y, Choi J, Kang HB, Han SY, Park K, Hwang HJ. Regioselective Synthesis of 6- O-Acetyl Dieckol and Its Selective Cytotoxicity against Non-Small-Cell Lung Cancer Cells. Mar Drugs 2022; 20:683. [PMID: 36355006 PMCID: PMC9695823 DOI: 10.3390/md20110683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 12/03/2022] Open
Abstract
Dieckol, a phlorotannin from Ecklonia cava, has shown potential for use as an anticancer agent that selectively kills cancer cells. However, it is necessary to amplify its potency without damaging its inherent safety in order to develop it as a competitive chemotherapeutic. Here, we explored the controlled O-acylations of dieckol. Acyl groups could be consistently introduced to the 6-O position of dieckol with a high regioselectivity, which was confirmed by NOESY, HMBC and HSQC spectroscopies. In cytotoxicity studies on the newly synthesized 6-O-acetyl, 6-O-benzoyl dieckols and previously synthesized 6-O-alkyl dieckols against A549 vs. normal cells, all of the derivatives showed low cytotoxicity in normal cells with an IC50 of 481-719 μM, and highly structure-dependent cytotoxicity in A549 cells with an IC50 of 7.02 (acetyl)-842.26 (benzyl) μM. The selectivity index also showed a large structure dependency in the range of 0.67 (benzyl)-68.58 (acetyl). An analysis of the structure-activity relationship indicated that the activity was dramatically reduced in the presence of a benzene ring and was highly increased in the presence of small polar substituents. Conclusions: Controlled mono-O-modifications of dieckol could be a powerful tool to enhance the anticancer activity of dieckol, thus contributing to the development strategy for dieckol-based chemotherapeutics.
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Affiliation(s)
- Hyeon-Cheol Shin
- Center for Molecular Intelligence, The State University of New York, Korea, 119 Songdomunhwa-ro, Yeonsu-gu, Incheon 21985, Korea
| | - Yongkyun Kim
- School of Chemical Engineering and Material Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 03722, Korea
| | - Jaeyeong Choi
- School of Chemical Engineering and Material Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 03722, Korea
| | - Hyun Bae Kang
- Healinnols Inc., 1662 Yuseong-daero, Yuseong-gu, Daejeon 34054, Korea
| | - Seung-Yun Han
- College of Medicine, Konyang University, 158 Gwanjeodong-ro, Seo-gu, Daejeon 35365, Korea
| | - Kwangyong Park
- School of Chemical Engineering and Material Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 03722, Korea
| | - Hye Jeong Hwang
- Center for Molecular Intelligence, The State University of New York, Korea, 119 Songdomunhwa-ro, Yeonsu-gu, Incheon 21985, Korea
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Applying Seaweed Compounds in Cosmetics, Cosmeceuticals and Nutricosmetics. Mar Drugs 2021; 19:md19100552. [PMID: 34677451 PMCID: PMC8539943 DOI: 10.3390/md19100552] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022] Open
Abstract
The interest in seaweeds for cosmetic, cosmeceutics, and nutricosmetics is increasing based on the demand for natural ingredients. Seaweeds offer advantages in relation to their renewable character, wide distribution, and the richness and versatility of their valuable bioactive compounds, which can be used as ingredients, as additives, and as active agents in the formulation of skin care products. Bioactive compounds, such as polyphenols, polysaccharides, proteins, peptides, amino acids, lipids, vitamins, and minerals, are responsible for the biological properties associated with seaweeds. Seaweed fractions can also offer technical features, such as thickening, gelling, emulsifying, texturizing, or moistening to develop cohesive matrices. Furthermore, the possibility of valorizing industrial waste streams and algal blooms makes them an attractive, low cost, raw and renewable material. This review presents an updated summary of the activities of different seaweed compounds and fractions based on scientific and patent literature.
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Dyshlovoy SA. Recent Updates on Marine Cancer-Preventive Compounds. Mar Drugs 2021; 19:md19100558. [PMID: 34677457 PMCID: PMC8537284 DOI: 10.3390/md19100558] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/31/2022] Open
Abstract
The natural compounds derived from marine organisms often exhibit unique chemical structures and potent biological activities. Cancer-preventive activity is one of the rather new activities that has emerged and been extensively studied over the last decades. This review summarizes the recent updates on the marine chemopreventive compounds covering the relevant literature published in 2013-2021 and following the previous comprehensive review by Stonik and Fedorov (Marine Drugs 2014, 12, 636-671). In the current article, only the molecules having an effect on malignant transformation (or related pathway and molecules), cancer stem cells, or carcinogen-induced in vivo tumor development were considered to be "true" cancer-preventive compounds and were, therefore, reviewed. Additionally, particular attention has been given to the molecular mechanisms of chemoprevention, executed by the reported marine compounds.
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Affiliation(s)
- Sergey A Dyshlovoy
- Laboratory of Pharmacology, A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
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Xiao W, Liu H, Lei Y, Gao H, Alahmadi TA, Peng H, Chen W. Chemopreventive effect of dieckol against 7,12-dimethylbenz(a)anthracene induced skin carcinogenesis model by modulatory influence on biochemical and antioxidant biomarkers. ENVIRONMENTAL TOXICOLOGY 2021; 36:800-810. [PMID: 33347706 DOI: 10.1002/tox.23082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Skin cancer is the commonly found type, which contributes to 40% of whole cancer incidences worldwide. Dieckol is an active compound occurs in the marine algae with many biological benefits. In this exploration, we intended to investigate the therapeutic potency of dieckol against the 7,12-dimethylbenz(a)anthracene (DMBA)-triggered skin carcinogenesis in mice. The skin cancer was stimulated to the animals via injecting the 25 μg of DMBA in 100 μL of acetone in shaved dorsal portion along with the 30 mg/kg of dieckol supplementation for 25 week. The antioxidant enzymes and phase-I and -II detoxifying enzymes in the test animals were inspected via standard protocols. Pro-inflammatory markers (IL-6, IL-1β, and TNF-α) level was examined via ELISA kits and the expression of inflammatory molecular markers like p-NF-ƙB, IƙBα and p-IƙBα were studied through western blotting. The expression status of pro- and anti-apoptotic proteins (p53, Bax, Bcl-2, caspase-3, caspase-9, COX-2, TGF-β1) was investigated via real-time polymerase chain reaction (RT-PCR). Our results revealed that the 30 mg/kg of dieckol supplementation noticeably regained the body and liver weight and also diminished the tumor incidence in the DMBA-incited animals. Dieckol treatment exhibited an enhanced antioxidants (SOD, CAT, GPx, and GSH) and reduced phase-I enzymes Cyt-p450 and Cyt-b5 in the DMBA-induced animals. Dieckol also diminished the pro-inflammatory modulators like IL-6, IL-1β and TNF-α. Western blotting result evidenced that the dieckol was inhibited the IƙB/NF-ƙB signaling pathway. RT-PCR study proved the enhanced expression of pro-apoptotic protein (p53, Bax, caspase-3 and -9) in the dieckol treated animals. Histological study also confirmed the therapeutic benefits of Dieckol. Altogether with these findings, it was clear that the dieckol has appreciably allayed the DMBA activated skin tumorigenesis in the mice and it could be a promising agent to treat the human skin cancer in future.
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Affiliation(s)
- Wenming Xiao
- Department of Burn and Plastic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Hongyan Liu
- Department of Burn and Plastic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Ying Lei
- Department of Burn and Plastic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Huawei Gao
- Department of Burn and Plastic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Tahani Awad Alahmadi
- Department of Pediatrics, College of Medicine, King Saud University, [Medical City], King Khalid University Hospital, Riyadh, Saudi Arabia
| | - Haitao Peng
- Department of Burn and Plastic Surgery, Nanchong Central Hospital, The Second Clinical Medical College, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Wei Chen
- Department of Pathophysiology, Basic Medical School, North Sichuan Medical College, Nanchong, Sichuan, China
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Aatif M, Muteeb G, Alsultan A, Alshoaibi A, Khelif BY. Dieckol and Its Derivatives as Potential Inhibitors of SARS-CoV-2 Spike Protein (UK Strain: VUI 202012/01): A Computational Study. Mar Drugs 2021; 19:242. [PMID: 33922914 PMCID: PMC8145291 DOI: 10.3390/md19050242] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023] Open
Abstract
The high risk of morbidity and mortality associated with SARS-CoV-2 has accelerated the development of many potential vaccines. However, these vaccines are designed against SARS-CoV-2 isolated in Wuhan, China, and thereby may not be effective against other SARS-CoV-2 variants such as the United Kingdom variant (VUI-202012/01). The UK SARS-CoV-2 variant possesses D614G mutation in the Spike protein, which impart it a high rate of infection. Therefore, newer strategies are warranted to design novel vaccines and drug candidates specifically designed against the mutated forms of SARS-CoV-2. One such strategy is to target ACE2 (angiotensin-converting enzyme2)-Spike protein RBD (receptor binding domain) interaction. Here, we generated a homology model of Spike protein RBD of SARS-CoV-2 UK strain and screened a marine seaweed database employing different computational approaches. On the basis of high-throughput virtual screening, standard precision, and extra precision molecular docking, we identified BE011 (Dieckol) as the most potent compounds against RBD. However, Dieckol did not display drug-like properties, and thus different derivatives of it were generated in silico and evaluated for binding potential and drug-like properties. One Dieckol derivative (DK07) displayed good binding affinity for RBD along with acceptable physicochemical, pharmacokinetic, drug-likeness, and ADMET properties. Analysis of the RBD-DK07 interaction suggested the formation of hydrogen bonds, electrostatic interactions, and hydrophobic interactions with key residues mediating the ACE2-RBD interaction. Molecular dynamics simulation confirmed the stability of the RBD-DK07 complex. Free energy calculations suggested the primary role of electrostatic and Van der Waals' interaction in stabilizing the RBD-DK07 complex. Thus, DK07 may be developed as a potential inhibitor of the RBD-ACE2 interaction. However, these results warrant further validation by in vitro and in vivo studies.
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Affiliation(s)
- Mohammad Aatif
- Department of Public Health, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Ghazala Muteeb
- Department of Nursing, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Abdulrahman Alsultan
- Department of Biomedical Sciences, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Adil Alshoaibi
- Department of Physics, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
| | - Bachir Yahia Khelif
- Department of Public Health, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;
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Abidizadegan M, Peltomaa E, Blomster J. The Potential of Cryptophyte Algae in Biomedical and Pharmaceutical Applications. Front Pharmacol 2021; 11:618836. [PMID: 33603668 PMCID: PMC7884888 DOI: 10.3389/fphar.2020.618836] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/31/2020] [Indexed: 01/28/2023] Open
Abstract
Microalgae produce a variety of bioactive components that provide benefits to human and animal health. Cryptophytes are one of the major groups of microalgae, with more than 20 genera comprised of 200 species. Recently, cryptophytes have attracted scientific attention because of their characteristics and biotechnological potential. For example, they are rich in a number of chemical compounds, such as fatty acids, carotenoids, phycobiliproteins and polysaccharides, which are mainly used for food, medicine, cosmetics and pharmaceuticals. This paper provides a review of studies that assess protective algal compounds and introduce cryptophytes as a remarkable source of bioactive components that may be usable in biomedical and pharmaceutical sciences.
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Affiliation(s)
- Maryam Abidizadegan
- Environmental Laboratory, Faculty of Biological and Environmental Sciences, University of Helsinki, Lahti, Finland
| | - Elina Peltomaa
- Institute of Atmospheric and Earth System Research (INAR)/Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Jaanika Blomster
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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Javed A, Hussain MB, Tahir A, Waheed M, Anwar A, Shariati MA, Plygun S, Laishevtcev A, Pasalar M. Pharmacological Applications of Phlorotannins: A Comprehensive Review. Curr Drug Discov Technol 2021; 18:282-292. [PMID: 32026778 DOI: 10.2174/1570163817666200206110243] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Seaweeds, including marine brown algae, are traditional food sources in Asia. Phlorotannins, as the product of the polyketide pathway, are mainly found in brown algae. Different properties have been attributed to this group of marine products ranging from antiallergic to anticancer activity. Mechanism of action is not obvious for all these properties, but there are some explanations for such effects. OBJECTIVE The current study aimed to review the phlorotannins and to assess the beneficial uses in medicine. METHODS Different databases were explored with the exact terms "Phlorotannin", "Seaweed" and "Brown Algae". Data assembly was finalized by June 2019. The papers showing the effects of phlorotannins in medicine were gathered and evaluated for further assessment. RESULTS General physiological aspects of phlorotannins were firstly evaluated. Different arrays of pharmacological properties ranging from anti-diabetic activity to cancer treatment were found. The mechanism of action for some of these beneficiary properties has been confirmed through rigorous examinations, but there are some features with unknown mechanisms. CONCLUSION Phlorotannins are characterized as a multifunctional group of natural products. Potential antioxidant characteristics could be attributed to preventive and/or their curative role in various diseases.
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Affiliation(s)
- Ahsan Javed
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Bilal Hussain
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Ali Tahir
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Marwa Waheed
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Ahsan Anwar
- Institute of Home and Food Sciences, Government College University, Faisalabad, Pakistan
| | - Mohammad Ali Shariati
- Laboratory of Biological Control and Antimicrobial Resistance, Orel State University named after I.S. Turgenev, Orel City, 302026, Russian Federation
| | - Sergey Plygun
- Laboratory of Biological Control and Antimicrobial Resistance, Orel State University named after I.S. Turgenev, Orel City, 302026, Russian Federation
| | - Alexey Laishevtcev
- Laboratory of Biological Control and Antimicrobial Resistance, Orel State University named after I.S. Turgenev, Orel City, 302026, Russian Federation
| | - Mehdi Pasalar
- Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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12
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Erpel F, Mateos R, Pérez-Jiménez J, Pérez-Correa JR. Phlorotannins: From isolation and structural characterization, to the evaluation of their antidiabetic and anticancer potential. Food Res Int 2020; 137:109589. [PMID: 33233195 DOI: 10.1016/j.foodres.2020.109589] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/19/2020] [Accepted: 07/21/2020] [Indexed: 12/12/2022]
Abstract
Phlorotannins are phenolic characteristic compounds of brown seaweeds that are only constituted by phloroglucinol (1,3,5-trihydroxybenzene). They are chain- and net-like structures of diverse molecular weights and have been widely identified in Ecklonia, Eisenia, and Ishige species. Since the time they were discovered in the '70 s, phlorotannins have been suggested as a main factor responsible for the antimicrobial activities attributed to algae extracts. Currently, cumulative in vitro and in vivo research evidence the diverse bioactivities of phlorotannin extracts -such as antidiabetic, anticancer, and antibacterial- pointing out their potential pharmacological and food applications. However, metabolomic studies and clinical trials are scarce, and thus many phlorotannins health-beneficial effects in humans are not yet confirmed. This article reviews recent studies assessing the antidiabetic and anticancer activities of phlorotannins. Particularly, their potential to prevent and control the progression of these non-communicable diseases is discussed, considering in vitro and animal studies, as well as clinical interventions. In contrast to other approaches, we only included investigations with isolated phlorotannins or phlorotannin-rich extracts. Thus, phlorotannin extraction, purification and characterization procedures are briefly addressed. Overall, although considerable research showing the antidiabetic and anticancer potential of phlorotannins is now available, further clinical trials are still necessary to conclusively demonstrate the efficacy of these compounds as adjuvants for diabetes and cancer prevention or treatment.
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Affiliation(s)
- Fernanda Erpel
- Chemical and Bioprocess Engineering Department, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, Santiago 7820436, Chile.
| | - Raquel Mateos
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Calle José Antonio Novais, 10, Madrid 28040, Spain.
| | - Jara Pérez-Jiménez
- Department of Metabolism and Nutrition, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), Calle José Antonio Novais, 10, Madrid 28040, Spain.
| | - José Ricardo Pérez-Correa
- Chemical and Bioprocess Engineering Department, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, Santiago 7820436, Chile.
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Thiyagarasaiyar K, Goh BH, Jeon YJ, Yow YY. Algae Metabolites in Cosmeceutical: An Overview of Current Applications and Challenges. Mar Drugs 2020; 18:E323. [PMID: 32575468 PMCID: PMC7344841 DOI: 10.3390/md18060323] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/19/2022] Open
Abstract
Cosmetics are widely used by people around the world to protect the skin from external stimuli. Consumer preference towards natural cosmetic products has increased as the synthetic cosmetic products caused adverse side effects and resulted in low absorption rate due to the chemicals' larger molecular size. The cosmetic industry uses the term "cosmeceutical", referring to a cosmetic product that is claimed to have medicinal or drug-like benefits. Marine algae have gained tremendous attention in cosmeceuticals. They are one of the richest marine resources considered safe and possessed negligible cytotoxicity effects on humans. Marine algae are rich in bioactive substances that have shown to exhibit strong benefits to the skin, particularly in overcoming rashes, pigmentation, aging, and cancer. The current review provides a detailed survey of the literature on cosmeceutical potentials and applications of algae as skin whitening, anti-aging, anticancer, antioxidant, anti-inflammation, and antimicrobial agents. The biological functions of algae and the underlying mechanisms of all these activities are included in this review. In addition, the challenges of using algae in cosmeceutical applications, such as the effectiveness of different extraction methods and processing, quality assurance, and regulations concerning extracts of algae in this sector were also discussed.
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Affiliation(s)
- Krishnapriya Thiyagarasaiyar
- Department of Biological Sciences, School of Science & Technology, Sunway University, Bandar Sunway 47500, Selangor Darul Ehsan, Malaysia;
| | - Bey-Hing Goh
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China;
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Selangor Darul Ehsan, Malaysia
- Health and Well-Being Cluster, Global Asia in the 21st Century (GA21) Platform, Monash University Malaysia, Bandar Sunway 47500, Malaysia
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea;
| | - Yoon-Yen Yow
- Department of Biological Sciences, School of Science & Technology, Sunway University, Bandar Sunway 47500, Selangor Darul Ehsan, Malaysia;
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Leandro A, Pereira L, Gonçalves AMM. Diverse Applications of Marine Macroalgae. Mar Drugs 2019; 18:md18010017. [PMID: 31878264 PMCID: PMC7024196 DOI: 10.3390/md18010017] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/18/2019] [Accepted: 12/22/2019] [Indexed: 01/21/2023] Open
Abstract
The aim of this paper is to review the multiplicity of the current uses of marine macroalgae. Seaweeds are already used in many products and for different purposes, from food products to medicine. They are a natural resource that can provide a number of compounds with beneficial bioactivities like antioxidant, anti-inflammatory, anti-aging effects, among others. Despite studies directed in prospecting for their properties and the commodities already marketed, they could, surely, be even more researched and sustainably explored.
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Affiliation(s)
- Adriana Leandro
- MARE (Marine and Environmental Sciences Centre), Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Leonel Pereira
- MARE (Marine and Environmental Sciences Centre), Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Ana M. M. Gonçalves
- MARE (Marine and Environmental Sciences Centre), Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
- Correspondence: ; Tel.: +351-239-240-700 (ext. 262-286)
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15
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Juárez-Portilla C, Olivares-Bañuelos T, Molina-Jiménez T, Sánchez-Salcedo JA, Moral DID, Meza-Menchaca T, Flores-Muñoz M, López-Franco Ó, Roldán-Roldán G, Ortega A, Zepeda RC. Seaweeds-derived compounds modulating effects on signal transduction pathways: A systematic review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 63:153016. [PMID: 31325683 DOI: 10.1016/j.phymed.2019.153016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 06/28/2019] [Accepted: 07/02/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Recently, the study of marine natural products has gained interest due to their relevant biological activities. Specially, seaweeds produce bioactive compounds that could act as modulators of cell signaling pathways involved in a plethora of diseases. Thereby, the description of the molecular mechanisms by which seaweeds elicit its biological functions will certainly pave the way to the pharmacological development of drugs. AIM This review describes the molecular mechanisms by which seaweeds act and its possible utilization in the design of new drugs. METHODS This review was conducted according to the PRISMA-P guidelines for systematic reviews. Two independent authors searched into four different databases using combinations of keywords. Two more authors selected the articles following the eligibility criteria. Information extraction was conducted by two separated authors and entered into spreadsheets. Methodological quality and risk of bias were determined applying a 12-question Risk of Bias criteria tool. RESULTS AND DISCUSSION We found 2360 articles (SCOPUS: 998; PubMed: 678; Wiley: 645 and EBSCO: 39) using the established keywords, of which 113 articles fit the inclusion criteria and were included in the review. This work comprises studies in cell lines, and animal models, any clinical trial was excluded. The articles were published from 2005 up to March 31st 2018. The biggest amount of articles was published in 2017. Furthermore, the seaweeds tested in the studies were collected in 15 countries, mainly in Eastern countries. We found that the main modulated signaling pathways by seaweeds-derivate extracts and compounds were: L-Arginine/NO, TNF-α, MAPKs, PI3K/AKT/GSK, mTOR, NF-κB, extrinsic and intrinsic apoptosis, cell cycle, MMPs and Nrf2. Finally, the articles we analyzed showed moderate risk of bias in almost all the parameters evaluated. However, the studies fail to describe the place and characteristics of sample collection, the sample size, and the blindness of the experimental design. CONCLUSION In this review we identified and summarized relevant information related to seaweed-isolated compounds and extracts having biological activity; their role in different signal pathways to better understand their potential to further development of cures for cancer, diabetes, and inflammation-related diseases.
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Affiliation(s)
- Claudia Juárez-Portilla
- Centro de Investigaciones Biomédicas, Universidad Veracruzana. Av. Dr. Luis Castelazo Ayala s/n. Col. Industrial Ánimas, C.P. 91190, Xalapa, Veracruz, México
| | - Tatiana Olivares-Bañuelos
- Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California. Km 103 autopista Tijuana-Ensenada, A.P. 453. Ensenada, Baja California, México
| | - Tania Molina-Jiménez
- Facultad de Química Farmacéutica Biológica, Universidad Veracruzana. Circuito Gonzalo Aguirre Beltrán s/n. Zona Universitaria, C.P. 91000, Xalapa, Veracruz, México
| | - José Armando Sánchez-Salcedo
- Programa de Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana. Av. San Rafael Atlixco No. 186, Col. Vicentina, C.P. 09340, Iztapalapa, Ciudad de México
| | - Diana I Del Moral
- Programa de Doctorado en Ciencias Biomédicas, Universidad Veracruzana. Av. Dr. Luis Castelazo Ayala s/n. Col. Industrial Ánimas, C.P. 91190, Xalapa, Veracruz, México
| | - Thuluz Meza-Menchaca
- Laboratorio de Genómica Humana, Facultad de Medicina, Universidad Veracruzana. Médicos y Odontólogos s/n. Col. Unidad del Bosque, C.P. 91010, Xalapa, Veracruz, México
| | - Mónica Flores-Muñoz
- Instituto de Ciencias de la Salud, Universidad Veracruzana. Av. Dr. Luis Castelazo Ayala s/n. Col. Industrial Ánimas, C.P. 91190, Xalapa, Veracruz, México
| | - Óscar López-Franco
- Instituto de Ciencias de la Salud, Universidad Veracruzana. Av. Dr. Luis Castelazo Ayala s/n. Col. Industrial Ánimas, C.P. 91190, Xalapa, Veracruz, México
| | - Gabriel Roldán-Roldán
- Laboratorio de Neurobiología Conductual, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Arturo Ortega
- Laboratorio de Neurotoxicología, Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, A.P. 14-740, 07300, Ciudad de México, México
| | - Rossana C Zepeda
- Centro de Investigaciones Biomédicas, Universidad Veracruzana. Av. Dr. Luis Castelazo Ayala s/n. Col. Industrial Ánimas, C.P. 91190, Xalapa, Veracruz, México.
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Eckol Inhibits Particulate Matter 2.5-Induced Skin Keratinocyte Damage via MAPK Signaling Pathway. Mar Drugs 2019; 17:md17080444. [PMID: 31357588 PMCID: PMC6723658 DOI: 10.3390/md17080444] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 01/17/2023] Open
Abstract
Toxicity of particulate matter (PM) towards the epidermis has been well established in many epidemiological studies. It is manifested in cancer, aging, and skin damage. In this study, we aimed to show the mechanism underlying the protective effects of eckol, a phlorotannin isolated from brown seaweed, on human HaCaT keratinocytes against PM2.5-induced cell damage. First, to elucidate the underlying mechanism of toxicity of PM2.5, we checked the reactive oxygen species (ROS) level, which contributed significantly to cell damage. Experimental data indicate that excessive ROS caused damage to lipids, proteins, and DNA and induced mitochondrial dysfunction. Furthermore, eckol (30 μM) decreased ROS generation, ensuring the stability of molecules, and maintaining a steady mitochondrial state. The western blot analysis showed that PM2.5 promoted apoptosis-related protein levels and activated MAPK signaling pathway, whereas eckol protected cells from apoptosis by inhibiting MAPK signaling pathway. This was further reinforced by detailed investigations using MAPK inhibitors. Thus, our results demonstrated that inhibition of PM2.5-induced cell apoptosis by eckol was through MAPK signaling pathway. In conclusion, eckol could protect skin HaCaT cells from PM2.5-induced apoptosis via inhibiting ROS generation.
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Marine Alga Ecklonia cava Extract and Dieckol Attenuate Prostaglandin E 2 Production in HaCaT Keratinocytes Exposed to Airborne Particulate Matter. Antioxidants (Basel) 2019; 8:antiox8060190. [PMID: 31234405 PMCID: PMC6617419 DOI: 10.3390/antiox8060190] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 12/21/2022] Open
Abstract
Atmospheric particulate matter (PM) is an important cause of skin damage, and an increasing number of studies have been conducted to discover safe, natural materials that can alleviate the oxidative stress and inflammation caused by PM. It has been previously shown that the extract of Ecklonia cava Kjellman, a perennial brown macroalga, can alleviate oxidative stress in epidermal keratinocytes exposed to PM less than 10 microns in diameter (PM10). The present study was undertaken to further examine the anti-inflammatory effects of E. cava extract and its major polyphenolic constituent, dieckol. HaCaT keratinocytes were exposed to PM10 in the presence or absence of E. cava extract or dieckol and analyzed for their viability, prostaglandin E2 (PGE2) release, and gene expression of cyclooxygenase (COX)-1, COX-2, microsomal prostaglandin E2 synthase (mPGES)-1, mPGES-2, and cytosolic prostaglandin E2 synthase (cPGES). PM10 treatment decreased cell viability and increased the production of PGE2, and these changes were partially abrogated by E. cava extract. E. cava extract also attenuated the expression of COX-1, COX-2, and mPGES-2 stimulated by PM10. Dieckol attenuated PGE2 production and the gene expression of COX-1, COX-2, and mPGES-1 stimulated by PM10. This study demonstrates that E. cava extract and dieckol alleviate airborne PM10-induced PGE2 production in keratinocytes through the inhibition of gene expression of COX-1, COX-2, mPGES-1, and/or mPGES-2. Thus, E. cava extract and dieckol are potentially useful natural cosmetic ingredients for counteracting the pro-inflammatory effects of airborne PM.
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Manandhar B, Paudel P, Seong SH, Jung HA, Choi JS. Characterizing Eckol as a Therapeutic Aid: A Systematic Review. Mar Drugs 2019; 17:E361. [PMID: 31216636 PMCID: PMC6627842 DOI: 10.3390/md17060361] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/05/2019] [Accepted: 06/15/2019] [Indexed: 12/23/2022] Open
Abstract
The marine biosphere is a treasure trove of natural bioactive secondary metabolites and the richest source of structurally diverse and unique compounds, such as phlorotannins and halo-compounds, with high therapeutic potential. Eckol is a precursor compound representing the dibenzo-1,4-dioxin class of phlorotannins abundant in the Ecklonia species, which are marine brown algae having a ubiquitous distribution. In search of compounds having biological activity from macro algae during the past three decades, this particular compound has attracted massive attention for its multiple therapeutic properties and health benefits. Although several varieties of marine algae, seaweed, and phlorotannins have already been well scrutinized, eckol deserves a place of its own because of the therapeutic properties it possesses. The relevant information about this particular compound has not yet been collected in one place; therefore, this review focuses on its biological applications, including its potential health benefits and possible applications to restrain diseases leading to good health. The facts compiled in this review could contribute to novel insights into the functions of eckol and potentially enable its use in different uninvestigated fields.
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Affiliation(s)
- Bandana Manandhar
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea.
| | - Pradeep Paudel
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea.
| | - Su Hui Seong
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea.
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju 54896, Korea.
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea.
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Bito T, Teng F, Watanabe F. Bioactive Compounds of Edible Purple Laver Porphyra sp. (Nori). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10685-10692. [PMID: 29161815 DOI: 10.1021/acs.jafc.7b04688] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Porphyra sp. (nori) is widely cultivated as an important marine crop. Dried nori contains numerous nutrients, including vitamin B12, which is the only vitamin absent from plant-derived food sources. Vegetarian diets are low in iron and vitamin B12; depletion of both causes severe anemia. Nori also contains large amounts of iron compared with other plant-derived foods and eicosapentaenoic acid, which is an important fatty acid found in fish oils. In nori, there are also many bioactive compounds that exhibit various pharmacological activities, such as immunomodulation, anticancer, antihyperlipidemic, and antioxidative activities, indicating that consumption of nori is beneficial to human health. However, Porphyra sp. contains toxic metals (arsenic and cadmiun) and/or amphipod allergens, the levels of which vary significantly among nori products. Further evidence from human studies of such beneficial or adverse effects of nori consumption is required.
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Affiliation(s)
- Tomohiro Bito
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori 680-8553, Japan
| | - Fei Teng
- Department of Food Quality and Safety, College of Food Science, Northeast Agricultural University , Harbin 150030, China
| | - Fumio Watanabe
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori 680-8553, Japan
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20
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Colantonio S, Rivers JK. Botanicals With Dermatologic Properties Derived From First Nations Healing: Part 2-Plants and Algae. J Cutan Med Surg 2017; 21:299-307. [PMID: 28300437 DOI: 10.1177/1203475416683390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Plants and algae have played a central role in the treatment of skin conditions in both traditional First Nations healing and in modern dermatology. The objective of this study was to examine the evidence supporting the dermatological use of seaweed, witch hazel, bearberry, and mayapple. METHODS Four plants and algae used in traditional First Nations treatments of skin disease were selected based on expert recommendations. Several databases were searched to identify relevant citations without language restrictions. RESULTS Seaweed has potential clinical use in the treatment of acne and wrinkles and may be incorporated into biofunctional textiles. Witch hazel is an effective and well-tolerated treatment of inflammation and diaper dermatitis. Bearberry leaves contain arbutin, a skin-lightening agent that is an alternative for the treatment of hyperpigmentation. Mayapple contains podophyllotoxin, a treatment for condyloma accuminata, molluscum contagiosum, and recalcitrant palmoplantar warts. DISCUSSION Common plants and algae are replete with bioactive agents that may have beneficial effects on the skin. Further research will open the door to new and innovative products in the future. Limitations of this study include that the scope of our study is limited to 4 plants and algae, a small sample of the breadth of plants used by First Nations for dermatological treatments.
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Affiliation(s)
- Sophia Colantonio
- 1 The Division of Dermatology, The Department of Medicine, University of Ottawa, Ontario, Canada
| | - Jason K Rivers
- 2 The Department of Dermatology & Skin Science, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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Wells ML, Potin P, Craigie JS, Raven JA, Merchant SS, Helliwell KE, Smith AG, Camire ME, Brawley SH. Algae as nutritional and functional food sources: revisiting our understanding. JOURNAL OF APPLIED PHYCOLOGY 2016; 29:949-982. [PMID: 28458464 PMCID: PMC5387034 DOI: 10.1007/s10811-016-0974-5] [Citation(s) in RCA: 534] [Impact Index Per Article: 66.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/25/2016] [Accepted: 09/26/2016] [Indexed: 05/21/2023]
Abstract
Global demand for macroalgal and microalgal foods is growing, and algae are increasingly being consumed for functional benefits beyond the traditional considerations of nutrition and health. There is substantial evidence for the health benefits of algal-derived food products, but there remain considerable challenges in quantifying these benefits, as well as possible adverse effects. First, there is a limited understanding of nutritional composition across algal species, geographical regions, and seasons, all of which can substantially affect their dietary value. The second issue is quantifying which fractions of algal foods are bioavailable to humans, and which factors influence how food constituents are released, ranging from food preparation through genetic differentiation in the gut microbiome. Third is understanding how algal nutritional and functional constituents interact in human metabolism. Superimposed considerations are the effects of harvesting, storage, and food processing techniques that can dramatically influence the potential nutritive value of algal-derived foods. We highlight this rapidly advancing area of algal science with a particular focus on the key research required to assess better the health benefits of an alga or algal product. There are rich opportunities for phycologists in this emerging field, requiring exciting new experimental and collaborative approaches.
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Affiliation(s)
- Mark L. Wells
- School of Marine Sciences, University of Maine, Orono, ME 04469 USA
| | - Philippe Potin
- Integrative Biology of Marine Models, Station Biologique Roscoff, CNRS-Université Pierre et Marie Curie, Place Georges Teissier, 29680 Roscoff, France
| | - James S. Craigie
- National Research Council of Canada, 1411 Oxford Street, Halifax, NS B3H 3Z1 Canada
| | - John A. Raven
- Division of Plant Sciences, University of Dundee (James Hutton Inst), Invergowrie, Dundee, DD2 5DA Scotland UK
- Plant Functional Biology and Climate Change Cluster, University of Technology Sydney, Ultimo, NSW 2007 Australia
| | - Sabeeha S. Merchant
- Department of Chemistry & Biochemistry, University of California-Los Angeles, 607 Charles E. Young Dr., East, Los Angeles, CA 90095-1569 USA
| | - Katherine E. Helliwell
- Department of Plant Sciences, University of Cambridge, Downing St., Cambridge, CB2 3EA UK
- Marine Biological Association of the UK, Citadel Hill, Plymouth, PL1 2PB UK
| | - Alison G. Smith
- Department of Plant Sciences, University of Cambridge, Downing St., Cambridge, CB2 3EA UK
| | - Mary Ellen Camire
- School of Food and Agriculture, University of Maine, Orono, ME 04469 USA
| | - Susan H. Brawley
- School of Marine Sciences, University of Maine, Orono, ME 04469 USA
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22
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Martinez RM, Pinho-Ribeiro FA, Steffen VS, Silva TCC, Caviglione CV, Bottura C, Fonseca MJV, Vicentini FTMC, Vignoli JA, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Topical Formulation Containing Naringenin: Efficacy against Ultraviolet B Irradiation-Induced Skin Inflammation and Oxidative Stress in Mice. PLoS One 2016; 11:e0146296. [PMID: 26741806 PMCID: PMC4704734 DOI: 10.1371/journal.pone.0146296] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 12/15/2015] [Indexed: 12/23/2022] Open
Abstract
Naringenin (NGN) exhibits anti-inflammatory and antioxidant activities, but it remains undetermined its topical actions against ultraviolet B (UVB)-induced inflammation and oxidative stress in vivo. The purpose of this study was to evaluate the physicochemical and functional antioxidant stability of NGN containing formulations, and the effects of selected NGN containing formulation on UVB irradiation-induced skin inflammation and oxidative damage in hairless mice. NGN presented ferric reducing power, ability to scavenge 2,2′-azinobis (3-ethylbenzothiazoline- 6-sulfonic acid) (ABTS) and hydroxyl radical, and inhibited iron-independent and dependent lipid peroxidation. Among the three formulations containing NGN, only the F3 kept its physicochemical and functional stability over 180 days. Topical application of F3 in mice protected from UVB-induced skin damage by inhibiting edema and cytokine production (TNF-α, IL-1β, IL-6, and IL-10). Furthermore, F3 inhibited superoxide anion and lipid hydroperoxides production and maintained ferric reducing and ABTS scavenging abilities, catalase activity, and reduced glutathione levels. In addition, F3 maintained mRNA expression of cellular antioxidants glutathione peroxidase 1, glutathione reductase and transcription factor Nrf2 (nuclear factor erythroid 2-related factor 2), and induced mRNA expression of heme oxygenase-1. In conclusion, a formulation containing NGN may be a promising approach to protecting the skin from the deleterious effects of UVB irradiation.
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Affiliation(s)
- Renata M. Martinez
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Felipe A. Pinho-Ribeiro
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brasil
| | - Vinicius S. Steffen
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Thais C. C. Silva
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Carla V. Caviglione
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Carolina Bottura
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Maria J. V. Fonseca
- Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, Av. do Café s/n, 14049–903 Ribeirão Preto, São Paulo, Brasil
| | - Fabiana T. M. C. Vicentini
- Farmacore Biotecnologia LTDA, Rua Edson Souto, 738—Anexo I, Lagoinha, 14095–250 Ribeirão Preto, São Paulo, Brasil
| | - Josiane A. Vignoli
- Departamento de Bioquímica e Biotecnologia, Centro de Ciências Exatas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brazil
| | - Marcela M. Baracat
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Sandra R. Georgetti
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Waldiceu A. Verri
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brasil
- * E-mail: (RC); (WAV)
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
- * E-mail: (RC); (WAV)
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Ryu B, Ahn BN, Kang KH, Kim YS, Li YX, Kong CS, Kim SK, Kim DG. Dioxinodehydroeckol protects human keratinocyte cells from UVB-induced apoptosis modulated by related genes Bax/Bcl-2 and caspase pathway. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2015; 153:352-7. [PMID: 26529485 DOI: 10.1016/j.jphotobiol.2015.10.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 10/22/2022]
Abstract
Although ultraviolet B (UVB) has a low level of skin penetration, it readily results in epidermal sunburn of keratinocytes that are destined to apoptosis after sun expose, and leads to DNA damage. Dioxinodehydroeckol (DHE), a phlorotannin from Ecklonia cava has been explored for its preventive activity against UVB-induced apoptosis in human keratinocyte (HaCaT) cells; however, the protective effects of treatment with low doses of DHE on UVB-damaged cells post-UVB exposure and their underlying mechanisms still remain unclear. The HaCaT cells were exposed to 20 mJcm(-2) of UVB irradiation which is the minimal erythema dose (MED) for individuals to be able to tan, and the expression levels of Bax/Bcl-2 and caspase-3,-8, -9 which are associated genes with apoptosis were investigated when we either treated cells with DHE doses after UVB irradiation or exposed them to UVB only. Our results suggest insight into proposed mechanistic pathway of protective activity of DHE on the HaCaT cells from UVB-induced apoptosis, indicating the benefit of DHE as a repair agent for skin damage against UVB.
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Affiliation(s)
- BoMi Ryu
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Byul-Nim Ahn
- Marine Bioprocess Research Center, Pukyong National University, Busan 608-739, Republic of Korea
| | - Kyong-Hwa Kang
- Marine Bioprocess Research Center, Pukyong National University, Busan 608-739, Republic of Korea
| | - Young-Sang Kim
- Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
| | - Yong-Xin Li
- Marine Bioprocess Research Center, Pukyong National University, Busan 608-739, Republic of Korea; Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine
| | - Chang-Suk Kong
- Department of Food and Nutrition, College of Medical and Life Science, Silla University, Busan 617-736, Republic of Korea
| | - Se-Kwon Kim
- Marine Bioprocess Research Center, Pukyong National University, Busan 608-739, Republic of Korea; Specialized Graduate School Science and Technology Convergence, Department of Marine Bio Convergence Science, Pukyong National University, Busan 608-737, Republic of Korea.
| | - Dong Gyu Kim
- Specialized Graduate School Science and Technology Convergence, Department of Marine Bio Convergence Science, Pukyong National University, Busan 608-737, Republic of Korea.
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Talero E, García-Mauriño S, Ávila-Román J, Rodríguez-Luna A, Alcaide A, Motilva V. Bioactive Compounds Isolated from Microalgae in Chronic Inflammation and Cancer. Mar Drugs 2015; 13:6152-209. [PMID: 26437418 PMCID: PMC4626684 DOI: 10.3390/md13106152] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/09/2015] [Accepted: 09/15/2015] [Indexed: 12/12/2022] Open
Abstract
The risk of onset of cancer is influenced by poorly controlled chronic inflammatory processes. Inflammatory diseases related to cancer development include inflammatory bowel disease, which can lead to colon cancer, or actinic keratosis, associated with chronic exposure to ultraviolet light, which can progress to squamous cell carcinoma. Chronic inflammatory states expose these patients to a number of signals with tumorigenic effects, including nuclear factor kappa B (NF-κB) and mitogen-activated protein kinases (MAPK) activation, pro-inflammatory cytokines and prostaglandins release and ROS production. In addition, the participation of inflammasomes, autophagy and sirtuins has been demonstrated in pathological processes such as inflammation and cancer. Chemoprevention consists in the use of drugs, vitamins, or nutritional supplements to reduce the risk of developing or having a recurrence of cancer. Numerous in vitro and animal studies have established the potential colon and skin cancer chemopreventive properties of substances from marine environment, including microalgae species and their products (carotenoids, fatty acids, glycolipids, polysaccharides and proteins). This review summarizes the main mechanisms of actions of these compounds in the chemoprevention of these cancers. These actions include suppression of cell proliferation, induction of apoptosis, stimulation of antimetastatic and antiangiogenic responses and increased antioxidant and anti-inflammatory activity.
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Affiliation(s)
- Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Sofía García-Mauriño
- Department of Plant Biology and Ecology, Faculty of Biology, University of Seville, Seville 41012, Spain.
| | - Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Azahara Rodríguez-Luna
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Antonio Alcaide
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Virginia Motilva
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
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25
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Martinez RM, Pinho-Ribeiro FA, Steffen VS, Caviglione CV, Vignoli JA, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Hesperidin methyl chalcone inhibits oxidative stress and inflammation in a mouse model of ultraviolet B irradiation-induced skin damage. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:145-153. [DOI: 10.1016/j.jphotobiol.2015.03.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/24/2015] [Accepted: 03/26/2015] [Indexed: 12/28/2022]
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27
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Gomes DL, Telles CBS, Costa MSSP, Almeida-Lima J, Costa LS, Keesen TSL, Rocha HAO. Methanolic extracts from brown seaweeds Dictyota cilliolata and Dictyota menstrualis induce apoptosis in human cervical adenocarcinoma HeLa cells. Molecules 2015; 20:6573-91. [PMID: 25871374 PMCID: PMC6272606 DOI: 10.3390/molecules20046573] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/23/2015] [Accepted: 04/01/2015] [Indexed: 02/05/2023] Open
Abstract
Carcinoma of the uterine cervix is the second most common female tumor worldwide, surpassed only by breast cancer. Natural products from seaweeds evidencing apoptotic activity have attracted a great deal of attention as new leads for alternative and complementary preventive or therapeutic anticancer agents. Here, methanol extracts from 13 species of tropical seaweeds (Rhodophytas, Phaeophyta and Chlorophyta) collected from the Northeast of Brazil were assessed as apoptosis-inducing agents on human cervical adenocarcinoma (HeLa). All extracts showed different levels of cytotoxicity against HeLa cells; the most potent were obtained from the brown alga Dictyota cilliolata (MEDC) and Dictyota menstrualis (MEDM). In addition, MEDC and MEDM also inhibits SiHa (cervix carcinoma) cell proliferation. Studies with these two extracts using flow cytometry and fluorescence microscopy showed that HeLa cells exposed to MEDM and MEDC exhibit morphological and biochemical changes that characterize apoptosis as shown by loss of cell viability, chromatin condensation, phosphatidylserine externalization, and sub-G1 cell cycle phase accumulation, also MEDC induces cell cycle arrest in cell cycle phase S. Moreover, the activation of caspases 3 and 9 by these extracts suggests a mitochondria-dependent apoptosis route. However, other routes cannot be ruled out. Together, these results point out the methanol extracts of the brown algae D. mentrualis and D. cilliolata as potential sources of molecules with antitumor activity.
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Affiliation(s)
- Dayanne Lopes Gomes
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
- Programa dePós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
| | - Cinthia Beatrice Silva Telles
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
- Programa dePós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
| | - Mariana Santana Santos Pereira Costa
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
- Intituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte (IFRN), Macau, Rio Grande do Norte-RN 59500-000, Brazil.
| | - Jailma Almeida-Lima
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
| | - Leandro Silva Costa
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
- Intituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte (IFRN), Santa Cruz, Rio Grande do Norte-RN 59200-000, Brazil.
| | - Tatjana Souza Lima Keesen
- Laboratório de Imunologia das Doenças Infecciosas, Departamento de Biologia Celular e Molecular, Universidade Federal da Paraíba (UFPB), João Pessoa-PB 58051-900, Brazil.
| | - Hugo Alexandre Oliveira Rocha
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
- Programa dePós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN 59078-970, Brazil.
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28
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Choi BW, Lee HS, Shin HC, Lee BH. Multifunctional activity of polyphenolic compounds associated with a potential for Alzheimer's disease therapy from Ecklonia cava. Phytother Res 2015; 29:549-53. [PMID: 25640212 DOI: 10.1002/ptr.5282] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/02/2014] [Accepted: 12/04/2014] [Indexed: 11/09/2022]
Abstract
Five polyphenols were isolated and purified from a brown alga Ecklonia cava. These compounds showed diverse biological activities such as antioxidative, antiinflammatory, and enzyme inhibitory activities. This led us to investigate the potential of these compounds as Alzheimer's disease drugs. All of the compounds showed moderate acetylcholinesterase inhibitory activity in a micromolar range (IC50 from 16.0 to 96.3 μM). For butyrylcholinesterase, a new target for the treatment of Alzheimer's disease, phlorofucofuroeckol-A (PFF-A), showed a particularly potent inhibitory activity (IC50 0.95 μM), which is over 100-fold greater than for acetylcholinesterase. These compounds inhibited glycogen synthase kinase 3 beta, which is related to the formation of hyperphosphorylated tau and generation Aβ. Bieckol and PFF-A inhibited amyloid precursor protein biosynthesis. PFF-A also showed very strong β-secretase inhibitory activity with IC50 of submicromole. These results render these compounds as interesting potential drug candidates for Alzheimer's disease.
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Affiliation(s)
- Byoung Wook Choi
- Department of Chemical and Biological Engineering, Hanbat National University, Dongseodaero 125, Yuseong-gu, Daejeon,, 305-719, Korea
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29
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Bosch R, Philips N, Suárez-Pérez JA, Juarranz A, Devmurari A, Chalensouk-Khaosaat J, González S. Mechanisms of Photoaging and Cutaneous Photocarcinogenesis, and Photoprotective Strategies with Phytochemicals. Antioxidants (Basel) 2015; 4:248-68. [PMID: 26783703 PMCID: PMC4665475 DOI: 10.3390/antiox4020248] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 03/02/2015] [Accepted: 03/12/2015] [Indexed: 01/10/2023] Open
Abstract
Photoaging and photocarcinogenesis are primarily due to solar ultraviolet (UV) radiation, which alters DNA, cellular antioxidant balance, signal transduction pathways, immunology, and the extracellular matrix (ECM). The DNA alterations include UV radiation induced thymine-thymine dimers and loss of tumor suppressor gene p53. UV radiation reduces cellular antioxidant status by generating reactive oxygen species (ROS), and the resultant oxidative stress alters signal transduction pathways such as the mitogen-activated protein kinase (MAPK), the nuclear factor-kappa beta (NF-κB)/p65, the janus kinase (JAK), signal transduction and activation of transcription (STAT) and the nuclear factor erythroid 2-related factor 2 (Nrf2). UV radiation induces pro-inflammatory genes and causes immunosuppression by depleting the number and activity of the epidermal Langerhans cells. Further, UV radiation remodels the ECM by increasing matrixmetalloproteinases (MMP) and reducing structural collagen and elastin. The photoprotective strategies to prevent/treat photoaging and photocarcinogenesis include oral or topical agents that act as sunscreens or counteract the effects of UV radiation on DNA, cellular antioxidant balance, signal transduction pathways, immunology and the ECM. Many of these agents are phytochemical derivatives and include polyphenols and non-polyphenols. The flavonoids are polyphenols and include catechins, isoflavones, proanthocyanidins, and anthocyanins, whereas the non-flavonoids comprise mono phenolic acids and stilbenes. The natural sources of polyphenols include tea, cocoa, grape/wine, soy, pomegranate, and Polypodium leucotomos. The non-phenolic phytochemicals include carotenoids, caffeine and sulphoraphance (SFN). In addition, there are other phytochemical derivatives or whole extracts such as baicalin, flavangenol, raspberry extract, and Photomorphe umbellata with photoprotective activity against UVB radiation, and thereby carcinogenesis.
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Affiliation(s)
- Ricardo Bosch
- Department of Dermatology, Virgen de la Victoria University Hospital, Málaga 29010, Spain.
- Dermatology and Medicine Department, University of Málaga, Málag 29071, Spain.
| | - Neena Philips
- School of Natural Sciences, Fairleigh Dickinson University, 1000 River Road, Teaneck, NJ 07666, USA.
| | - Jorge A Suárez-Pérez
- Department of Dermatology, Virgen de la Victoria University Hospital, Málaga 29010, Spain.
- Dermatology and Medicine Department, University of Málaga, Málag 29071, Spain.
| | - Angeles Juarranz
- Biology Department, Universidad Autónoma de Madrid, Madrid 28903, Spain.
| | - Avani Devmurari
- School of Natural Sciences, Fairleigh Dickinson University, 1000 River Road, Teaneck, NJ 07666, USA.
| | | | - Salvador González
- Dermatology Service, Memorial Sloan-Kettering Cancer Center, New York, NY 10022, USA.
- Ramon y Cajal Hospital, Alcala University, Madrid 28034, Spain.
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30
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Heffernan N, Brunton NP, FitzGerald RJ, Smyth TJ. Profiling of the molecular weight and structural isomer abundance of macroalgae-derived phlorotannins. Mar Drugs 2015; 13:509-28. [PMID: 25603345 PMCID: PMC4306949 DOI: 10.3390/md13010509] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 11/21/2014] [Indexed: 11/16/2022] Open
Abstract
Phlorotannins are a group of complex polymers of phloroglucinol (1,3,5-trihydroxybenzene) unique to macroalgae. These phenolic compounds are integral structural components of the cell wall in brown algae, but also play many secondary ecological roles such as protection from UV radiation and defense against grazing. This study employed Ultra Performance Liquid Chromatography (UPLC) with tandem mass spectrometry to investigate isomeric complexity and observed differences in phlorotannins derived from macroalgae harvested off the Irish coast (Fucus serratus, Fucus vesiculosus, Himanthalia elongata and Cystoseira nodicaulis). Antioxidant activity and total phenolic content assays were used as an index for producing phlorotannin fractions, enriched using molecular weight cut-off dialysis with subsequent flash chromatography to profile phlorotannin isomers in these macroalgae. These fractions were profiled using UPLC-MS with multiple reaction monitoring (MRM) and the level of isomerization for specific molecular weight phlorotannins between 3 and 16 monomers were determined. The majority of the low molecular weight (LMW) phlorotannins were found to have a molecular weight range equivalent to 4-12 monomers of phloroglucinol. The level of isomerization within the individual macroalgal species differed, resulting in substantially different numbers of phlorotannin isomers for particular molecular weights. F. vesiculosus had the highest number of isomers of 61 at one specific molecular mass, corresponding to 12 phloroglucinol units (PGUs). These results highlight the complex nature of these extracts and emphasize the challenges involved in structural elucidation of these compounds.
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Affiliation(s)
- Natalie Heffernan
- Food Biosciences Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland.
| | - Nigel P Brunton
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland.
| | | | - Thomas J Smyth
- Department of Life Sciences, Institute of Technology Sligo, Sligo, Ireland.
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31
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Kim KC, Piao MJ, Zheng J, Yao CW, Cha JW, Kumara MHSR, Han X, Kang HK, Lee NH, Hyun JW. Fucodiphlorethol G Purified from Ecklonia cava Suppresses Ultraviolet B Radiation-Induced Oxidative Stress and Cellular Damage. Biomol Ther (Seoul) 2014; 22:301-7. [PMID: 25143808 PMCID: PMC4131532 DOI: 10.4062/biomolther.2014.044] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/02/2014] [Accepted: 06/11/2014] [Indexed: 12/04/2022] Open
Abstract
Fucodiphlorethol G (6’-[2,4-dihydroxy-6-(2,4,6-trihydroxyphenoxy)phenoxy]biphenyl-2,2’,4,4’,6-pentol) is a compound purified from Ecklonia cava, a brown alga that is widely distributed offshore of Jeju Island. This study investigated the protective effects of fucodiphlorethol G against oxidative damage-mediated apoptosis induced by ultraviolet B (UVB) irradiation. Fucodiphlorethol G attenuated the generation of 2, 2-diphenyl-1-picrylhydrazyl radicals and intracellular reactive oxygen species in response to UVB irradiation. Fucodiphlorethol G suppressed the inhibition of human keratinocyte growth by UVB irradiation. Additionally, the wavelength of light absorbed by fucodiphlorethol G was close to the UVB spectrum. Fucodiphlorethol G reduced UVB radiation-induced 8-isoprostane generation and DNA fragmentation in human keratinocytes. Moreover, fucodiphlorethol G reduced UVB radiation-induced loss of mitochondrial membrane potential, generation of apoptotic cells, and active caspase-9 expression. Taken together, fucodiphlorethol G protected human keratinocytes against UVB radiation-induced cell damage and apoptosis by absorbing UVB radiation and scavenging reactive oxygen species.
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Affiliation(s)
- Ki Cheon Kim
- School of Medicine and Institute for Nuclear Science and Technology
| | - Mei Jing Piao
- School of Medicine and Institute for Nuclear Science and Technology
| | - Jian Zheng
- School of Medicine and Institute for Nuclear Science and Technology
| | - Cheng Wen Yao
- School of Medicine and Institute for Nuclear Science and Technology
| | - Ji Won Cha
- School of Medicine and Institute for Nuclear Science and Technology
| | | | - Xia Han
- School of Medicine and Institute for Nuclear Science and Technology
| | - Hee Kyoung Kang
- School of Medicine and Institute for Nuclear Science and Technology
| | - Nam Ho Lee
- Department of Chemistry, College of Natural Sciences, Jeju National University, Jeju 690-756, Republic of Korea
| | - Jin Won Hyun
- School of Medicine and Institute for Nuclear Science and Technology
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32
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Hwang JA, Islam MM, Ahmed ST, Mun HS, Kim GM, Kim YJ, Yang CJ. Seamustard (Undaria pinnatifida) Improves Growth, Immunity, Fatty Acid Profile and Reduces Cholesterol in Hanwoo Steers. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 27:1114-23. [PMID: 25083105 PMCID: PMC4109867 DOI: 10.5713/ajas.2014.14072] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/31/2014] [Accepted: 04/10/2014] [Indexed: 01/26/2023]
Abstract
The study was designed to evaluate the effect of 2% seamustard (Undaria pinnatifida) by-product (SW) on growth performance, immunity, carcass characteristics, cholesterol content and fatty acid profile in Hanwoo steers. A total of 20 Hanwoo steers (ave. 22 months old; 619 kg body weight) were randomly assigned to control (basal diet) and 2% SW supplemented diet. Dietary SW supplementation significantly (p<0.05) improved average daily gain and gain:feed ratio as well as serum immunoglobulin G concentration. Chemical composition and quality grade of meat and carcass yield grades evaluated at the end of the trial were found to be unaffected by SW supplementation. Dietary SW significantly reduced meat cholesterol concentration (p<0.05). Dietary SW supplementation significantly reduced the myristic acid (C14:0) and palmitoleic acid (C16:ln-7) concentration, while SW increased the concentration of stearic acid (C18:0) and linolenic acid (C18:3n-3) compared to control (p<0.05). Dietary SW supplementation had no effect on saturated fatty acids (SFA), unsaturated fatty acids, poly unsaturated fatty acid (PUFA) or mono unsaturated fatty acid content in muscles. A reduced ratio of PUFA/SFA and n-6/n-3 were found in SW supplemented group (p<0.05). In conclusion, 2% SW supplementation was found to improve growth, immunity and fatty acid profile with significantly reduced cholesterol of beef.
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Affiliation(s)
| | | | - S. T. Ahmed
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742,
Korea
| | - H. S. Mun
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742,
Korea
| | - G. M. Kim
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742,
Korea
| | - Y. J. Kim
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742,
Korea
| | - C. J. Yang
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742,
Korea
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Bak SS, Ahn BN, Kim JA, Shin SH, Kim JC, Kim MK, Sung YK, Kim SK. Ecklonia cava promotes hair growth. Clin Exp Dermatol 2014; 38:904-10. [PMID: 24252083 DOI: 10.1111/ced.12120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Previous studies have reported the protective effects on skin elasticity of the edible marine seaweed Ecklonia cava, which acts through regulation of both antioxidative and anti-inflammatory responses. AIM We evaluated the effect of E. cava and one of its components, dioxinodehydroeckol, on hair-shaft growth in cultured human hair follicles and on hair growth in mice. METHODS The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to check cell viability of human dermal papilla cells (DPCs) and outer root sheath (ORS) cells after treatment with E. cava and its metabolite, dioxinodehydroeckol. Hair-shaft growth was measured using the in vitro hair-follicle organ-culture system, in the presence or absence of E. cava and dioxinodehydroeckol. Anagen induction activity was examined by topical application of E. cava to the dorsal skin of C57BL/6 mice. Insulin-like growth factor (IGF)-1 expression was measured by reverse transcriptase PCR and ELISA. RESULTS The proliferation activity was found to be highest for the ethyl acetate-soluble fraction of E. cava (EAFE) in DPCs and in ORS cells. Treatment with EAFE resulted in elongation of the hair shaft in cultured human hair follicles, and promoted transition of the hair cycle from the telogen to the anagen phase in the dorsal skin of C57BL/6 mice. In addition, EAFE induced an increase in IGF-1 expression in DPCs. Dioxinodehydroeckol, a component of E. cava, induced elongation of the hair shaft, an increase in proliferation of DPCs and ORS cells, and an increase in expression of IGF-1 in DPCs. CONCLUSIONS These results suggest that E. cava containing dioxinodehydroeckol promotes hair growth through stimulation of DPCs and ORS cells.
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Affiliation(s)
- S S Bak
- Marine Bioprocess Research Center, Pukyong National University, Busan, Korea
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Quah CC, Kim KH, Lau MS, Kim WR, Cheah SH, Gundamaraju R. Pigmentation and dermal conservative effects of the astonishing algae Sargassum polycystum and Padina tenuis on guinea pigs, human epidermal melanocytes (HEM) and Chang cells. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES : AJTCAM 2014; 11:77-83. [PMID: 25392585 PMCID: PMC4202401 DOI: 10.4314/ajtcam.v11i4.13] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND The preference for a fairer skin-tone has become a common trend among both men and women around the world. In this study, seaweeds Sargassum polycystum and Padina tenuis were investigated for their in vitro and in vivo potentials in working as skin whitening agents. Seaweed has been used as a revolutionary skin repairing agent in both traditional and modern preparations. The high antioxidant content is one of the prime reasons for its potent action. It has been employed in traditional Chinese and Japanese medicine. For centuries, most medical practitioners in the Asian cultures have known seaweed as an organic source of vitamins, minerals, fatty acids like omega-3 and omega-6 and antioxidants. The present objective of the study was to evaluate the potent dermal protective effect of the two seaweeds Sargassum polycystum and Padina tenuis on human cell lines and guinea pigs. MATERIAL AND METHODS Seaweeds were extracted with ethanol and further fractionated with hexane, ethyl acetate and water. The extracts were tested for mushroom tyrosinase inhibitory activity, cytotoxicity in human epidermal melanocyte (HEM), and Chang cells. Extracts with potent melanocytotoxicity were formulated into cosmetic cream and tested on guinea pigs in dermal irritation tests and de-pigmentation assessments. RESULTS Both Sargassum polycystum and Padina tenuis seaweeds showed significant inhibitory effect on mushroom tyrosinase in the concentration tested. SPEt showed most potent cytotoxicity on HEM (IC50 of 36µg/ml), followed by SPHF (65µg/ml), and PTHF (78.5µg/ml). SPHF and SPEt reduced melanin content in skin of guinea pigs when assessed histologically. CONCLUSION SPEt, SPHF and PTHF were able to inhibit HEM proliferation in vitro, with SPHF being most potent and did not cause any dermal irritation in guinea pigs. The results obtained indicate that SPHF is a promising pharmacological or cosmetic agent.
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Affiliation(s)
- Chin Chew Quah
- Department of Physiology, Faculty of Medicine, University Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kah Hwi Kim
- Department of Physiology, Faculty of Medicine, University Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mei Siu Lau
- Department of Physiology, Faculty of Medicine, University Malaya, 50603 Kuala Lumpur, Malaysia
| | - Wee Ric Kim
- Department of Molecule Pathology, Institute for Medical Research, Jalan Pahang, 50588 Kuala Lumpur, Malaysia
| | - Swee Hung Cheah
- Department of Physiology, Faculty of Medicine, University Malaya, 50603 Kuala Lumpur, Malaysia
| | - Rohit Gundamaraju
- Department of Physiology, Faculty of Medicine, University Malaya, 50603 Kuala Lumpur, Malaysia
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Choi HJ, Park JH, Lee BH, Chee HY, Lee KB, Oh SM. Suppression of NF-κB by dieckol extracted from Ecklonia cava negatively regulates LPS induction of inducible nitric oxide synthase gene. Appl Biochem Biotechnol 2014; 173:957-67. [PMID: 24744158 DOI: 10.1007/s12010-014-0910-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 04/07/2014] [Indexed: 11/26/2022]
Abstract
Dieckol, extracted from brown algae, Ecklonia cava, is suggested to elicit anti-inflammatory or anti-tumorigenic activities. However, dieckol-mediated regulatory mechanism for inflammatory response still remains elusive. Here, we show that dieckol suppressed lipopolysaccharide (LPS)-induced inducible nitric oxide synthase (iNOS) expression in mouse leukemic macrophage Raw264.7 cells. Also, dieckol decreased LPS-induced both nitric oxide (NO) production and iNOS promoter-driven transcriptional activity in a dose-dependent manner. On the other hand, LPS-mediated NF-κB activity was inhibited by dieckol treatment. Moreover, results revealed that dieckol diminished LPS-mediated p65 nuclear translocation or IκBα phosphorylation dose-dependently, and reduced LPS-induced phosphorylation of mitogen-activated protein kinases (MAPKs), significantly p38MAPK. Collectively, these findings suggest that dieckol acts as a negative regulator of LPS-mediated iNOS induction through suppression of NF-κB activity, implying a mechanistic role of dieckol in regulation of inflammatory response.
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Affiliation(s)
- Hye-Jin Choi
- Department of Biochemistry, College of Medicine, Konyang University, 685 Gasuwon-dong, Seo-gu, Daejeon, 302-832, South Korea
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Thomas NV, Manivasagan P, Kim SK. Potential matrix metalloproteinase inhibitors from edible marine algae: a review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:1090-100. [PMID: 24780533 DOI: 10.1016/j.etap.2014.04.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 04/02/2014] [Accepted: 04/06/2014] [Indexed: 05/27/2023]
Abstract
Matrix metalloproteinases are endopeptidases which belong to the group of metalloproteinases that contribute for the extra-cellular matrix degradation, and several tissue remodeling processes. An imbalance in the regulation of these endopeptidases eventually leads to several severe pathological complications like cancers, cardiac, cartilage, and neurological related diseases. Hence inhibitory substances of metalloproteinases (MMPIs) could prove beneficial in the management of above specified pathological conditions. The available synthetic MMPIs that have been reported until now have few shortcomings and thus many of them could not make to the final clinical trials. Hence a growing interest among researchers on screening of MMPIs from different natural resources is evident and especially natural products from marine origin. As there has been an unparalleled contribution of several biologically active compounds from marine resources that have shown profound applications in nutraceuticals, cosmeceuticals, and pharmaceuticals, we have attempted to discuss the various MMPIs from edible sea-weeds.
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Affiliation(s)
- Noel Vinay Thomas
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
| | - Panchanathan Manivasagan
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
| | - Se-Kwon Kim
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea; Marine Bioprocess Research Center, Pukyong National University, Busan 608-737, Republic of Korea.
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Yeo AR, Lee J, Tae IH, Park SR, Cho YH, Lee BH, Shin HC, Kim SH, Yoo YC. Anti-hyperlipidemic Effect of Polyphenol Extract (Seapolynol(™)) and Dieckol Isolated from Ecklonia cava in in vivo and in vitro Models. Prev Nutr Food Sci 2014; 17:1-7. [PMID: 24471056 PMCID: PMC3866765 DOI: 10.3746/pnf.2012.17.1.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 02/28/2012] [Indexed: 11/26/2022] Open
Abstract
The inhibitory effect of polyphenol extracts (Seapolynol™, SPN) of the marine brown algae Ecklonia cava and dieckol, a major component of SPN, on hyperlipidemia was investigated in ICR mice fed a high-fat diet (HFD) for five weeks. For analysis of the anti-hyperlipidemic effects of SPN and dieckol, these two agents were given orally on a daily basis to HFD-fed mice for four weeks, starting one week after the beginning of HFD feeding. Groups administered with SPN as well as dieckol showed lower body weight gains than the HFD only group. Administration of SPN and dieckol also resulted in a significant reduction of the level of total cholesterol (TCHO), triglyceride (TG), and low-density lipoprotein (LDL) cholesterol in the serum of HFD-fed mice. In Oil Red O staining using 3T3-L1 preadipocytes, it was shown that both SPN and dieckol markedly inhibited lipid accumulation of 3T3-L1 cells. Furthermore, SPN and dieckol (50 μg/mL) significantly inhibited 3-hydroxyl-methyl glutaryl coenzyme A (HMGCoA) reductase activity in vitro. Taken together, these results suggest that polyphenols of Ecklonia cava (SPN) and dieckol reduce body weight gain and fat accumulation in HFD-induced obese mice, and that their hypolipidemic effect is related to the inhibition of adipogenesis of adipocytes and HMGCoA reductase activity.
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Affiliation(s)
- A-Reum Yeo
- Department of Microbiology, College of Medicine, Konyang University, Daejeon 302-718, Korea ; Myonggok Institute for Medical Science, College of Medicine, Konyang University, Daejeon 302-718, Korea
| | - Junglim Lee
- Department of Microbiology, College of Medicine, Konyang University, Daejeon 302-718, Korea ; Myonggok Institute for Medical Science, College of Medicine, Konyang University, Daejeon 302-718, Korea
| | - In Hwan Tae
- Department of Microbiology, College of Medicine, Konyang University, Daejeon 302-718, Korea ; Myonggok Institute for Medical Science, College of Medicine, Konyang University, Daejeon 302-718, Korea
| | - Seok-Rae Park
- Department of Microbiology, College of Medicine, Konyang University, Daejeon 302-718, Korea ; Myonggok Institute for Medical Science, College of Medicine, Konyang University, Daejeon 302-718, Korea
| | - Young Ho Cho
- Department of Pharmaceutics & Biotechnology, Medical Engineering College, Konyang University, Chungnam 320-711, Korea
| | - Bong Ho Lee
- Division of Applied Chemistry and Biotechnology, College of Engineering, Hanbat National University, Daejeon 305-719, Korea
| | | | | | - Yung Choon Yoo
- Department of Microbiology, College of Medicine, Konyang University, Daejeon 302-718, Korea ; Myonggok Institute for Medical Science, College of Medicine, Konyang University, Daejeon 302-718, Korea
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Hyun YJ, Piao MJ, Ko MH, Lee NH, Kang HK, Yoo ES, Koh YS, Hyun JW. Photoprotective effect of Undaria crenata against ultraviolet B-induced damage to keratinocytes. J Biosci Bioeng 2013; 116:256-64. [PMID: 23474096 DOI: 10.1016/j.jbiosc.2013.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 01/11/2013] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
Abstract
Chronic exposure of the skin to ultraviolet B (UVB) radiation induces oxidative stress, which plays a crucial role in the induction of skin cancer. The brown alga Undaria crenata is a potential source of antioxidant and anti-apoptotic compounds due to its capacity to produce protective compounds against environmental factors, including UV radiation. The aim of this study was to investigate the photoprotective properties of an U. crenata ethanol extract (UCE) against UVB-induced cell damage in human HaCaT keratinocytes. UCE exhibited absorbing effect of UVB (280-320 nm) and scavenging activity against the 1,1-diphenyl-2-picrylhydrazyl radical and intracellular reactive oxygen species induced by hydrogen peroxide and UVB rays. Furthermore, electron spin resonance spectrometry revealed the significant scavenging effect of UCE against superoxide anion and hydroxyl radical. UCE reduced UVB-induced apoptosis, as shown by a decrease in apoptotic bodies and nuclear and DNA fragmentation, resulting in the recovery of cell viability. UCE also decreased the degree of UVB-induced oxidative stress to lipids, proteins, and DNA as shown by a decrease in 8-isoprostane level, protein carbonylation and DNA tails. These results suggest that UCE protects human keratinocytes against UVB-induced oxidative stress.
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Affiliation(s)
- Yu Jae Hyun
- Jeju National University, School of Medicine, Jeju 690-756, Republic of Korea
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Balboa EM, Conde E, Moure A, Falqué E, Domínguez H. In vitro antioxidant properties of crude extracts and compounds from brown algae. Food Chem 2013; 138:1764-85. [PMID: 23411309 DOI: 10.1016/j.foodchem.2012.11.026] [Citation(s) in RCA: 220] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 11/02/2012] [Accepted: 11/06/2012] [Indexed: 01/03/2023]
Abstract
Research on the bioactives from seaweeds has increased in recent years. Antioxidant activity is one of the most studied, due to the interest of these compounds both as preservatives and protectors against oxidation in food and cosmetics and also due to their health implications, mainly in relation to their potential as functional ingredients. Brown algae present higher antioxidant potential in comparison with red and green families and contain compounds not found in terrestrial sources. In vitro antioxidant chemical methods, used as a first approach to evaluate potential agents to protect from lipid oxidation in foods, confirmed that the brown algae crude extracts, fractions and pure components are comparatively similar or superior to synthetic antioxidants. Particular emphasis on the fucoidan and phlorotannin polymeric fractions is given, considering variations associated with the species, collection area, season, and extraction and purification technologies.
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Affiliation(s)
- Elena M Balboa
- Departamento de Enxeñería Química, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain
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Beneficial effects of marine algal compounds in cosmeceuticals. Mar Drugs 2013; 11:146-64. [PMID: 23344156 PMCID: PMC3564164 DOI: 10.3390/md11010146] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 10/19/2012] [Accepted: 12/12/2012] [Indexed: 11/21/2022] Open
Abstract
The name “cosmeceuticals” is derived from “cosmetics and pharmaceuticals”, indicating that a specific product contains active ingredients. Marine algae have gained much importance in cosmeceutical product development due to their rich bioactive compounds. In the present review, marine algal compounds (phlorotannins, sulfated polysaccharides and tyrosinase inhibitors) have been discussed toward cosmeceutical application. In addition, atopic dermatitis and the possible role of matrix metalloproteinase (MMP) in skin-related diseases have been explored extensively for cosmeceutical products. The proper development of marine algae compounds will be helpful in cosmeceutical product development and in the development of the cosmeceutical industry.
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Guillermo RF, Zhang X, Kaushik RS, Zeman D, Ahmed SA, Khalifa S, Fahmy H, Dwivedi C. Dose-response on the chemopreventive effects of sarcophine-diol on UVB-induced skin tumor development in SKH-1 hairless mice. Mar Drugs 2012; 10:2111-2125. [PMID: 23118725 PMCID: PMC3475277 DOI: 10.3390/md10092111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 09/17/2012] [Accepted: 09/17/2012] [Indexed: 11/16/2022] Open
Abstract
Sarcophine-diol (SD) is a lactone ring-opened analogue of sarcophine. It has shown chemopreventive effects on chemically-induced skin tumor development in female CD-1 mice, as well as in a UVB-induced skin tumor development model in hairless SKH-1 mice at a dose of 30 μg SD applied topically and 180 mJ/cm2 UVB. The objective of this study was to determine the dose-response on the chemopreventive effects of SD on SKH-1 hairless mice when exposed to a UVB radiation dose of 30 mJ/cm2. This UVB dose better represents chronic human skin exposure to sunlight leading to skin cancer than previous studies applying much higher UVB doses. Carcinogenesis was initiated and promoted by UVB radiation. Female hairless SKH-1 mice were divided into five groups. The control group was topically treated with 200 μL of acetone (vehicle), and the SD treatment groups were topically treated with SD (30 μg, 45 μg, and 60 μg dissolved in 200 μL of acetone) 1 h before UVB radiation (30 mJ/cm2). The last group of animals received 60 μg SD/200 μL acetone without UVB exposure. These treatments were continued for 27 weeks. Tumor multiplicity and tumor volumes were recorded on a weekly basis for 27 weeks. Weight gain and any signs of toxicity were also closely monitored. Histological characteristics and the proliferating cell nuclear antigen (PCNA) were evaluated in the mice skin collected at the end of the experiment. The dose-response study proved a modest increase in chemopreventive effects with the increase in SD dose. SD reduced the number of cells positively stained with PCNA proliferation marker in mice skin. The study also showed that SD application without UVB exposure has no effect on the structure of skin. The results from this study suggest that broader range doses of SD are necessary to improve the chemopreventive effects.
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Affiliation(s)
- Ruth F. Guillermo
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD 57007, USA; (R.F.G.); (H.F.)
| | | | - Radhey S. Kaushik
- Department of Biology/Microbiology, South Dakota State University, Brookings, SD 57007, USA;
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD 57007, USA;
| | - David Zeman
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD 57007, USA;
| | - Safwat A. Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt;
| | | | - Hesham Fahmy
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD 57007, USA; (R.F.G.); (H.F.)
| | - Chandradhar Dwivedi
- Department of Pharmaceutical Sciences, South Dakota State University, Brookings, SD 57007, USA; (R.F.G.); (H.F.)
- Author to whom correspondence should be addressed; ; Tel.: +1-605-688-4247; Fax: +1-605-688-5993
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Steevensz AJ, Mackinnon SL, Hankinson R, Craft C, Connan S, Stengel DB, Melanson JE. Profiling phlorotannins in brown macroalgae by liquid chromatography-high resolution mass spectrometry. PHYTOCHEMICAL ANALYSIS : PCA 2012; 23:547-53. [PMID: 22383068 DOI: 10.1002/pca.2354] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/11/2012] [Accepted: 01/18/2012] [Indexed: 05/28/2023]
Abstract
INTRODUCTION Phlorotannins, phenolic compounds produced exclusively by Phaeophyceae (brown algae), have recently been associated with a wide variety of beneficial bioactivities. Several studies have measured the total phenolic content in extracts from various species, but little characterisation of individual phlorotannin components has been demonstrated. OBJECTIVE The purpose of this study was to develop a liquid chromatography-mass spectrometry (LC-MS) based method for rapid profiling of phlorotannins in brown algae. METHODOLOGY Phlorotannin-enriched extracts from five phaeophyceaen species were analysed by ultrahigh-pressure liquid chromatography (UHPLC) operating in hydrophilic interaction liquid chromatography (HILIC) mode combined with high resolution mass spectrometry (HRMS). The method was optimised using an extract of Fucus vesiculosus; separation was achieved in less than 15 min. The basic mobile phase enhanced negative-ion electrospray ionisation (ESI), and generated multiply charged ions that allowed detection of high molecular weight phlorotannins. RESULTS The phlorotannin profiles of Pelvetia canaliculata, Fucus spiralis, F. vesiculosus, Ascophyllum nodosum and Saccharina longicruris differed significantly. Fucus vesiculosus yielded a high abundance of low molecular weight (< 1200 Da) phlorotannins, while P. canaliculata exhibited a more evenly distributed profile, with moderate degrees of polymerisation ranging from 3 to 49. HRMS enabled the identification of phlorotannins with masses up to 6000 Da using a combination of accurate mass and ¹³C isotopic patterns. CONCLUSION The UHPLC-HRMS method described was successful in rapidly profiling phlorotannins in brown seaweeds based on their degree of polymerisation. HILIC was demonstrated to be an effective separation mode, particularly for low molecular weight phlorotannins.
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Affiliation(s)
- Aaron J Steevensz
- National Research Council of Canada, Institute for Marine Bioscience, 1411 Oxford Street, Halifax, Nova Scotia B3H 3Z1, Canada
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Shin HC, Kim SH, Park Y, Lee BH, Hwang HJ. Effects of 12-week oral supplementation of Ecklonia cava polyphenols on anthropometric and blood lipid parameters in overweight Korean individuals: a double-blind randomized clinical trial. Phytother Res 2012; 26:363-8. [PMID: 21717516 DOI: 10.1002/ptr.3559] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 04/21/2011] [Accepted: 04/29/2011] [Indexed: 12/16/2023]
Abstract
The effects of 12-week supplementation with a polyphenol extract from Ecklonia cava (ECP) on anthropometry, serum biochemistry and hematology have been investigated. Ninety-seven overweight male and female adults (average age 40.5 ± 9.2 yr and body mass index (BMI) of 26.5 ± 1.6 kg/m²) were enrolled in a randomized, double-blind, placebo-controlled trial with parallel-group design. Subjects were randomly allocated into three groups designated as PC (placebo), LD (low-dose, 72 mg-ECP/day) and HD (high-dose, 144 mg-ECP/day). Both LD and HD groups showed significant decreases in BMI, body fat ratio, waist circumference, waist/hip ratio, total cholesterol, low-density lipoprotein (LDL) cholesterol, total cholesterol/high-density lipoprotein (HDL) cholesterol and atherogenic index (AI) after 12 weeks, as compared with the placebo group. The HD group also showed a significant increase in serum HDL cholesterol as compared with the placebo group. Only the HD group showed significant decreases in serum glucose and systolic blood pressure after 12 weeks. There was no significant adverse event related with ingestion of ECP, and serum biochemical and hematological parameters were maintained within normal range during the intervention period. In conclusion, these results demonstrated that ECP supplementation significantly contributed to lowering body fat and serum lipid parameters such as total and LDL cholesterols with dose dependence. Further studies using different populations, dosages or biological markers are highly recommended to better understand the physiological features of this polyphenol.
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Yang YI, Shin HC, Kim SH, Park WY, Lee KT, Choi JH. 6,6'-Bieckol, isolated from marine alga Ecklonia cava, suppressed LPS-induced nitric oxide and PGE₂ production and inflammatory cytokine expression in macrophages: the inhibition of NFκB. Int Immunopharmacol 2012; 12:510-7. [PMID: 22289571 DOI: 10.1016/j.intimp.2012.01.005] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 01/08/2012] [Accepted: 01/14/2012] [Indexed: 11/18/2022]
Abstract
Ecklonia cava is an edible brown alga that contains high levels of phlorotannins, which are unique marine polyphenolic compounds. In the present study, we investigated the anti-inflammatory effects and the underlying molecular mechanism of phlorotannin 6,6'-bieckol, which is an active component isolated from E. cava, on lipopolysaccharide (LPS)-stimulated primary macrophages and RAW 264.7 macrophage cells. 6,6'-Bieckol was found to inhibit nitric oxide (NO) and prostaglandin E₂ (PGE₂) production and to suppress the LPS-induced expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) at the mRNA and protein levels. In addition, 6,6'-bieckol downregulated the production and mRNA expression of the inflammatory cytokines TNF-α and IL-6. Moreover, pretreatment with 6,6'-bieckol decreased LPS-induced transactivation of nuclear factor-kappa B (NFκB) and nuclear translocation of p50 and p65 subunits of NFκB. Furthermore, chromatin immunoprecipitation assay revealed that 6,6'-bieckol inhibited LPS-induced NFκB binding to the TNF-α and IL-6 promoters. Taken together, these data suggest that the anti-inflammatory properties of 6,6'-bieckol are related to the down-regulation of iNOS, COX-2, and pro-inflammatory cytokines through the negative regulation of the NFκB pathway in LPS-stimulated macrophages.
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Affiliation(s)
- Yeong-In Yang
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea
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Guinea M, Franco V, Araujo-Bazán L, Rodríguez-Martín I, González S. In vivo UVB-photoprotective activity of extracts from commercial marine macroalgae. Food Chem Toxicol 2012; 50:1109-17. [DOI: 10.1016/j.fct.2012.01.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 01/05/2012] [Accepted: 01/06/2012] [Indexed: 11/25/2022]
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Thomas NV, Kim SK. Potential pharmacological applications of polyphenolic derivatives from marine brown algae. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2011; 32:325-35. [PMID: 22004951 DOI: 10.1016/j.etap.2011.09.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 08/24/2011] [Accepted: 09/02/2011] [Indexed: 05/31/2023]
Abstract
Recently, the isolation and characterization of the biologically active components from seaweeds have gained much attention from various research groups across the world. The marine algae have been studied for biologically active components and phlorotannins are one among them. Among marine algae, brown algal species such as Ecklonia cava, Eisenia arborea, Ecklonia stolinifera and Eisenia bicyclis have been studied for their potential biological activities. Majority of the investigations on phlorotannins derived from brown algae have exhibited their potentiality as antioxidant, anti-inflammatory, antidiabetic, antitumor, antihypertensive, anti-allergic, hyaluronidase enzyme inhibition and in matrix metalloproteinases (MMPs) inhibition activity. In this review, we have made an attempt to discuss the potential biological activities of phlorotannins from marine brown algae and their possible candidature in the pharmaceutical applications.
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Affiliation(s)
- Noel Vinay Thomas
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan 608-737, Republic of Korea
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Stengel DB, Connan S, Popper ZA. Algal chemodiversity and bioactivity: sources of natural variability and implications for commercial application. Biotechnol Adv 2011; 29:483-501. [PMID: 21672617 DOI: 10.1016/j.biotechadv.2011.05.016] [Citation(s) in RCA: 236] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 05/29/2011] [Accepted: 05/30/2011] [Indexed: 02/06/2023]
Abstract
There has been significant recent interest in the commercial utilisation of algae based on their valuable chemical constituents many of which exhibit multiple bioactivities with applications in the food, cosmetic, agri- and horticultural sectors and in human health. Compounds of particular commercial interest include pigments, lipids and fatty acids, proteins, polysaccharides and phenolics which all display considerable diversity between and within taxa. The chemical composition of natural algal populations is further influenced by spatial and temporal changes in environmental parameters including light, temperature, nutrients and salinity, as well as biotic interactions. As reported bioactivities are closely linked to specific compounds it is important to understand, and be able to quantify, existing chemical diversity and variability. This review outlines the taxonomic, ecological and chemical diversity between, and within, different algal groups and the implications for commercial utilisation of algae from natural populations. The biochemical diversity and complexity of commercially important types of compounds and their environmental and developmental control are addressed. Such knowledge is likely to help achieve higher and more consistent levels of bioactivity in natural samples and may allow selective harvesting according to algal species and local environmental conditions for different groups of compounds.
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Affiliation(s)
- Dagmar B Stengel
- Botany and Plant Science, School of Natural Sciences, Ryan Institute for Environmental, Marine and Energy Research, National University of Ireland Galway, Ireland.
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Rivelli DP, Almeida RL, Ropke CD, Barros SBM. Hydrolysis influence on phytochemical composition, antioxidant activity, plasma concentration, and tissue distribution of hydroethanolic Ilex paraguariensis extract components. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:8901-8907. [PMID: 21790134 DOI: 10.1021/jf201665t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The infusion of aerial parts of Ilex paraguariensis is widely consumed. Its antioxidant activity suggests an important role of this plant in the treatment/prevention of oxidative stress related diseases. Plant extract active compounds are frequently found in esterified form that may be poorly absorbed. Hydrolysis of the extract is a possible approach to increase its bioavailability. The aim of this study was to perform a phytochemical analysis and evaluate in rats the plasma concentration and tissue distribution of antioxidant compounds in the hydroethanolic extract of Ilex paraguariensis, before and after enzymatic hydrolysis. Both extracts presented high antioxidant activity and phenolic content. Rats given single or repeated doses of the hydrolyzed extract showed increased plasma antioxidant activity and higher plasma levels of caffeic acid. However, no changes of endogenous antioxidants were observed. In conclusion, hydrolysis of the extract of Ilex paraguariensis is a strategy to improve its bioavailability and in vivo antioxidant activity.
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Affiliation(s)
- Diogo P Rivelli
- School of Pharmaceutical Sciences, University of São Paulo, São Paulo SP, Brazil.
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Filip A, Daicoviciu D, Clichici S, Mocan T, Muresan A, Postescu ID. Photoprotective effects of two natural products on ultraviolet B-induced oxidative stress and apoptosis in SKH-1 mouse skin. J Med Food 2011; 14:761-6. [PMID: 21470043 DOI: 10.1089/jmf.2010.0142] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Solar ultraviolet radiation (UV) is the major cause of nonmelanoma skin cancer in humans. Photochemoprevention with natural products represents a simple but very effective strategy for the management of cutaneous neoplasia. We studied the photoprotective activity of Calluna vulgaris and red grape seed (Vitis vinifera L, Burgund Mare variety [BM]) extracts in vivo in an SKH-1 hairless mice skin model. Fifty 8-week-old female SKH-1 hairless mice were randomly divided into 5 groups (n = 10 each): controls, UVB-irradiated, C. vulgaris plus UVB-irradiated, BM plus UVB-irradiated, and epigallocatechin gallate (EGCG) plus UVB-irradiated. A dose of 4 mg/mouse per cm² of skin area for both extracts was topically applied to the mice 30 minutes before a single-dose (240 mJ/cm²) UVB exposure. EGCG dissolved in phosphate-buffered saline (pH 6.6; 0.067 M) was administered at 2 mg/mouse per cm². Glutathione peroxidase and catalase activities, reduced glutathione (GSH), malondialdehyde, nitric oxide, and caspase 3 activity were determined in skin homogenates 24 hours after irradiation. A single dose of UVB increased GSH levels and glutathione peroxidase activity in the exposed skin. C. vulgaris and BM pretreatment significantly decreased GSH formation and glutathione peroxidase activity (P < .001) and inhibited UVB-induced lipid peroxidation (P < .0001) and nitric oxide production (C. vulgaris: P < .06). Topical treatments with C. vulgaris and particularly BM extracts (P < .002) significantly reduced caspase 3 activity, indicating that the cells were protected against apoptosis. These results suggest that C. vulgaris and BM extracts might be chemopreventive candidates for reducing UV-induced risk for skin cancer.
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Affiliation(s)
- Adriana Filip
- Department of Physiology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.
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Kim SK, Thomas NV, Li X. Anticancer compounds from marine macroalgae and their application as medicinal foods. ADVANCES IN FOOD AND NUTRITION RESEARCH 2011; 64:213-24. [PMID: 22054949 DOI: 10.1016/b978-0-12-387669-0.00016-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Cancer is one of the most challenging medical conditions that need a proper therapeutic approach for its proper management with fewer side effects. Until now, many of the phytochemicals from terrestrial origin have been assessed for their anticancer ability and few of them are in clinical trials too. However, marine environment also has been a greatest resource that harbors taxonomically diverse and a variety of life forms and serves as store house for several biologically beneficial metabolites. Hitherto, many metabolites have been isolated from marine biomasses that have exhibited excellent biological activities, especially as anticancer agents. In particular, marine macroalgae which are considered as dietary constituents in Pacific Asian region have become chief resources for their unparalleled and unique metabolites like sulfated polysaccharides (SPs), phlorotannins, and their ability in reducing the risk of cancer and its related diseases. In this chapter, we have discussed the anticancer activities of marine algae-derived SPs, phlorotannins, and carotenoids and the possibilities of marine algae as potential medicinal foods in the management of cancer.
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Affiliation(s)
- Se-Kwon Kim
- Marine Biochemistry Laboratory, Department of Chemistry, Pukyong National University, Busan, Republic of Korea.
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