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Weichmann F, Rohdewald P. Pycnogenol ® French maritime pine bark extract in randomized, double-blind, placebo-controlled human clinical studies. Front Nutr 2024; 11:1389374. [PMID: 38757130 PMCID: PMC11096518 DOI: 10.3389/fnut.2024.1389374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
Pycnogenol® French maritime pine bark extract is a well-known and thoroughly studied patented extract from the bark of Pinus pinaster Ait. ssp. Atlantica. In 39 randomized double-blind, placebo-controlled (RDP) human clinical trials including 2,009 subjects, Pycnogenol® French maritime pine bark extract supplementation for two weeks to six months has been shown to beneficially affect cardiovascular health, chronic venous insufficiency, cognition, joint health, skin health, eye health, women's health, respiratory health and allergies, oral health and sports performance. The mechanisms of action that can explain the respective effects on different conditions in the human body are discussed as well. As investigated in several in vitro, in vivo and in clinical studies, Pycnogenol® French maritime pine bark extract showed antioxidative effects, anti-inflammatory abilities, beneficial effects on endothelial function and reinforcing effects on the extracellular matrix. The present review aims to give a comprehensive overview of currently available "gold standard" RDP trials of Pycnogenol®'s benefits across various health domains compared to placebo. In addition, some of the processes on which the presented effects of Pycnogenol® French maritime pine bark extract are based will be elucidated and discussed. This broad overview of RDP studies on Pycnogenol® in different health domains can be used as a basis for further research on applications and mechanisms of this unique French maritime pine bark extract.
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Affiliation(s)
| | - Peter Rohdewald
- Institute of Pharmaceutical Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
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Oliveira AMS, de Souza Batista D, de Castro TN, Alves IA, Souto RB, Mota MD, Serafini MR, Rajkumar G, Cazedey ECL. The use of natural extracts with photoprotective activity: a 2015-2023 patent prospection. Photochem Photobiol Sci 2024; 23:853-869. [PMID: 38613600 DOI: 10.1007/s43630-024-00559-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 03/05/2024] [Indexed: 04/15/2024]
Abstract
Synthetic sunscreen offers protection against excessive exposure to ultraviolet (UV) radiation from the sun, and protects the skin from possible damage. However, they have low efficacy against the formation of reactive oxygen species (ROS), which are highly reactive molecules that can be generated in the skin when it is exposed to UV radiation, and are known to play a role in oxidative stress, which can contribute to skin aging and damage. Thus, there is an ongoing search for sunscreens that do not have these negative effects. One promising source for these is natural products. Therefore, the current patent review summarizes topical formulations made from natural compounds that have antioxidant properties and can be used as photoprotective or anti-aging agents, either using a single natural extract or a combination of extracts. The review reports basic patent information (applicant country, type of applicant, and year of filing) and gives details about the invention, including its chemical composition, and the in vitro and in vivo tests performed. These patents describe natural products that can be used to protect the skin and validate their efficacy, and safety, in addition to standardizing their formulations. The compositions described illustrate the consistent innovation in the use of natural products to protect against UV damage and photoaging disorders, a promising field which is receiving growing global recognition.
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Affiliation(s)
- Ana Maria Santos Oliveira
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil.
| | - Daniel de Souza Batista
- Postgraduate Program in Pharmaceutical Sciences, Department of Life Sciences, State University of Bahia, Salvador, Bahia, Brazil
| | - Tailaine Nascimento de Castro
- Postgraduate Program in Pharmaceutical Sciences, Department of Life Sciences, State University of Bahia, Salvador, Bahia, Brazil
| | - Izabel Almeida Alves
- Postgraduate Program in Pharmaceutical Sciences, Department of Life Sciences, State University of Bahia, Salvador, Bahia, Brazil
- Department of Medicines, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Ricardo Bizogne Souto
- Department of Medicines, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Milleno Dantas Mota
- Postgraduate Program in Pharmaceutical Sciences, Department of Life Sciences, State University of Bahia, Salvador, Bahia, Brazil
| | - Mairim Russo Serafini
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | - Gomathi Rajkumar
- Department of Botany, Sri Sarada College for Women (Autonomous), Periyar University, Salem, India
| | - Edith Cristina Laignier Cazedey
- Postgraduate Program in Pharmaceutical Sciences, Department of Life Sciences, State University of Bahia, Salvador, Bahia, Brazil
- Department of Medicines, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
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García-Pérez ME, Kasangana PB, Stevanovic T. Bioactive Molecules from Myrianthus arboreus, Acer rubrum, and Picea mariana Forest Resources. Molecules 2023; 28:molecules28052045. [PMID: 36903291 PMCID: PMC10004429 DOI: 10.3390/molecules28052045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/16/2023] [Accepted: 02/18/2023] [Indexed: 02/25/2023] Open
Abstract
Forest trees are the world's most important renewable natural resources in terms of their dominance among other biomasses and the diversity of molecules that they produce. Forest tree extractives include terpenes and polyphenols, widely recognized for their biological activity. These molecules are found in forest by-products, such as bark, buds, leaves, and knots, commonly ignored in forestry decisions. The present literature review focuses on in vitro experimental bioactivity from the phytochemicals of Myrianthus arboreus, Acer rubrum, and Picea mariana forest resources and by-products with potential for further nutraceutical, cosmeceutical, and pharmaceutical development. Although these forest extracts function as antioxidants in vitro and may act on signaling pathways involved in diabetes, psoriasis, inflammation, and skin aging, much still remains to be investigated before using them as therapeutic candidates, cosmetics, or functional foods. Traditional forest management systems focused on wood must evolve towards a holistic approach, allowing the use of these extractives for developing new value-added products.
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Affiliation(s)
| | - Pierre-Betu Kasangana
- SEREX, College Centre for Technology Transfer Affiliated with Rimouski Cégep, Québec, QC G5J1K3, Canada
| | - Tatjana Stevanovic
- Renewable Materials Research Center (CRMR), Department of Wood Sciences and Forestry, Université Laval, Québec, QC G1V0A6, Canada
- Correspondence:
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Oral Supplementation and Systemic Drugs for Skin Aging: A Narrative Review. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:114-124. [PMID: 36206809 DOI: 10.1016/j.ad.2022.09.014] [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: 05/12/2022] [Revised: 09/20/2022] [Accepted: 09/20/2022] [Indexed: 11/07/2022] Open
Abstract
Skin aging is influenced by intrinsic and extrinsic factors and involves multiple pathogenic mechanisms. The most widely used treatments are topical products and minimally invasive procedures. Evidence on the benefits of systemic therapy is limited for several reasons: Reliance on mostly small and predominantly female samples, short study durations, methodologic heterogeneity, and a lack of consensus on which outcome measures are clinically relevant. Furthermore, systemic drugs and oral supplements are not without adverse effects. Oral hydrolyzed collagen and oral hyaluronic acid are well tolerated, and numerous clinical trials show they can mitigate some signs of skin aging. Low-dose oral isotretinoin is another option, but it has a higher risk of adverse effects. Evidence is lacking on the effects of the many dietary supplements on offer, such as vitamins, flavonoids, plant extracts, and trace elements. The future of skin aging management would appear to lie in the use of senolytic and senomorphic agents targeting senescent cells in the skin.
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[Translated article] Oral Supplementation and Systemic Drugs for Skin Aging: A Narrative Review. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:T114-T124. [PMID: 36464003 DOI: 10.1016/j.ad.2022.09.021] [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: 05/12/2022] [Accepted: 09/20/2022] [Indexed: 12/03/2022] Open
Abstract
Skin aging is influenced by intrinsic and extrinsic factors and involves multiple pathogenic mechanisms. The most widely used treatments are topical products and minimally invasive procedures. Evidence on the benefits of systemic therapy is limited for several reasons: reliance on mostly small and predominantly female samples, short study durations, methodologic heterogeneity, and a lack of consensus on which outcome measures are clinically relevant. Furthermore, systemic drugs and oral supplements are not without adverse effects. Oral hydrolyzed collagen and oral hyaluronic acid are well tolerated, and numerous clinical trials show they can mitigate some signs of skin aging. Low-dose oral isotretinoin is another option, but it has a higher risk of adverse effects. Evidence is lacking on the effects of the many dietary supplements on offer, such as vitamins, flavonoids, plant extracts, and trace elements. The future of skin aging management would appear to lie in the use of senolytic and senomorphic agents targeting senescent cells in the skin.
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Vilkickyte G, Zilius M, Petrikaite V, Raudone L. Proanthocyanidins from Vaccinium vitis-idaea L. Leaves: Perspectives in Wound Healing and Designing for Topical Delivery. PLANTS (BASEL, SWITZERLAND) 2022; 11:2615. [PMID: 36235484 PMCID: PMC9572574 DOI: 10.3390/plants11192615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 09/25/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
The compositions and health-beneficial properties of lingonberry leaves (Vaccinium vitis-idaea L.) are well established; however, their proanthocyanidins are still heavily underutilized. Optimizing their delivery systems is key to enabling their wider applications. The present study investigates the phytochemical and 'wound-healing' properties of proanthocyanidin-rich fraction(s) (PRF) from lingonberry leaves as well as the development of optimal dermal film as a proanthocyanidin delivery system. The obtained PRF was subjected to HPLC-PDA and DMAC analyses to confirm the qualitative and quantitative profiles of different polymerization-degree proanthocyanidins. A 'wound healing' in vitro assay was performed to assess the ability of PRF to modulate the wound environment for better healing. Low concentrations of lingonberry proanthocyanidins were found to accelerate 'wound' closures, while high levels inhibited human fibroblast migration. Fifteen dermal films containing PRF were prepared and evaluated based on their polymer (MC, HEC, PEG 400) compositions, and physical, mechanical, and biopharmaceutical properties using an experimental design. The composition containing 0.30 g of MC, 0.05 g of HEC, and 3.0 g of PEG 400 was selected as a promising formulation for PRF delivery and a potentially effective functional wound dressing material, supporting the need for further investigations.
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Affiliation(s)
- Gabriele Vilkickyte
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Modestas Zilius
- Laboratory of Pharmaceutical Sciences, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
- Department of Clinical Pharmacy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Vilma Petrikaite
- Laboratory of Drug Targets Histopathology, Institute of Cardiology, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
| | - Lina Raudone
- Laboratory of Biopharmaceutical Research, Institute of Pharmaceutical Technologies, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
- Department of Pharmacognosy, Lithuanian University of Health Sciences, Sukileliu Av. 13, LT-50162 Kaunas, Lithuania
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Discovery of SARS-CoV-2-E channel inhibitors as antiviral candidates. Acta Pharmacol Sin 2022; 43:781-787. [PMID: 34294887 PMCID: PMC8295639 DOI: 10.1038/s41401-021-00732-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/29/2021] [Indexed: 12/15/2022] Open
Abstract
Lack of efficiency has been a major problem shared by all currently developed anti-SARS-CoV-2 therapies. Our previous study shows that SARS-CoV-2 structural envelope (2-E) protein forms a type of cation channel, and heterogeneously expression of 2-E channels causes host cell death. In this study we developed a cell-based high throughput screening (HTS) assay and used it to discover inhibitors against 2-E channels. Among 4376 compounds tested, 34 hits with cell protection activity were found. Followed by an anti-viral analysis, 15 compounds which could inhibit SARS-CoV-2 replication were identified. In electrophysiological experiments, three representatives showing inhibitory effect on 2-E channels were chosen for further characterization. Among them, proanthocyanidins directly bound to 2-E channel with binding affinity (KD) of 22.14 μM in surface plasmon resonance assay. Molecular modeling and docking analysis revealed that proanthocyanidins inserted into the pore of 2-E N-terminal vestibule acting as a channel blocker. Consistently, mutations of Glu 8 and Asn 15, two residues lining the proposed binding pocket, abolished the inhibitory effects of proanthocyanidins. The natural product proanthocyanidins are widely used as cosmetic, suggesting a potential of proanthocyanidins as disinfectant for external use. This study further demonstrates that 2-E channel is an effective antiviral drug target and provides a potential antiviral candidate against SARS-CoV-2.
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Neves JR, Grether-Beck S, Krutmann J, Correia P, Gonçalves Junior JE, Sant'Anna B, Kerob D. Efficacy of a topical serum containing l-ascorbic acid, neohesperidin, pycnogenol, tocopherol and hyaluronic acid in relation to skin aging signs. J Cosmet Dermatol 2022; 21:4462-4469. [PMID: 35150043 DOI: 10.1111/jocd.14837] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/19/2021] [Accepted: 01/17/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Skin aging is a process regulated by chronological aging and amplified by exposome factors including chronic UV exposure and pollution, which both induce reactive oxygen species. Topical antioxidants have the potential to counteract this process and to improve skin aging signs, including wrinkles and hyperpigmentation. OBJECTIVE To evaluate the efficacy of a topical antioxidant serum containing 15% L-ascorbic acid, neohesperidin, Pinus pinaster bark, tocopherol and hyaluronic acid (HA) ex vivo on air pollution-induced pigmentation and gene expression, as well as in vivo on skin aging signs in Brazilian volunteers, after 90 days of use. METHODS Ex vivo human skin samples were repetitively exposed to Diesel Exhaust Particles (DEP) and subsequently analyzed for changes in pigmentation and gene expression. Clinical efficacy was evaluated in 40 healthy adult females with phototype II to IV and visible photoaging signs, including facial hyperpigmentation, through dermatological evaluation and instrumental analysis including Reflectance Confocal Microscopy. RESULTS Ex vivo, the topical anti-oxidant serum significantly reduced DEP-induced skin pigmentation and expression of proinflammatory genes. A significant improvement of skin aging signs was observed after 90 days. Local tolerance was good. CONCLUSION The tested serum is effective in protecting human skin ex vivo against air pollution-induced skin pigmentation/aging and reduced in vivo skin aging signs, with a good safety profile after 90 days of daily use.
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Affiliation(s)
| | | | - Jean Krutmann
- IUF - Leibniz Research Institute of Environmental Medicine, Düsseldorf, Germany
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Montesinos CA, Khalid R, Cristea O, Greenberger JS, Epperly MW, Lemon JA, Boreham DR, Popov D, Gorthi G, Ramkumar N, Jones JA. Space Radiation Protection Countermeasures in Microgravity and Planetary Exploration. Life (Basel) 2021; 11:life11080829. [PMID: 34440577 PMCID: PMC8398261 DOI: 10.3390/life11080829] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/03/2021] [Accepted: 08/06/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Space radiation is one of the principal environmental factors limiting the human tolerance for space travel, and therefore a primary risk in need of mitigation strategies to enable crewed exploration of the solar system. METHODS We summarize the current state of knowledge regarding potential means to reduce the biological effects of space radiation. New countermeasure strategies for exploration-class missions are proposed, based on recent advances in nutrition, pharmacologic, and immune science. RESULTS Radiation protection can be categorized into (1) exposure-limiting: shielding and mission duration; (2) countermeasures: radioprotectors, radiomodulators, radiomitigators, and immune-modulation, and; (3) treatment and supportive care for the effects of radiation. Vehicle and mission design can augment the overall exposure. Testing in terrestrial laboratories and earth-based exposure facilities, as well as on the International Space Station (ISS), has demonstrated that dietary and pharmacologic countermeasures can be safe and effective. Immune system modulators are less robustly tested but show promise. Therapies for radiation prodromal syndrome may include pharmacologic agents; and autologous marrow for acute radiation syndrome (ARS). CONCLUSIONS Current radiation protection technology is not yet optimized, but nevertheless offers substantial protection to crews based on Lunar or Mars design reference missions. With additional research and human testing, the space radiation risk can be further mitigated to allow for long-duration exploration of the solar system.
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Affiliation(s)
| | - Radina Khalid
- School of Engineering, Rice University, Houston, TX 77005, USA;
| | - Octav Cristea
- Department of Surgery, Emory University School of Medicine, Atlanta, GA 30322, USA;
| | - Joel S. Greenberger
- Department of Radiation Oncology, University of Pittsburg Medical Center, Pittsburgh, PA 15213, USA; (J.S.G.); (M.W.E.)
| | - Michael W. Epperly
- Department of Radiation Oncology, University of Pittsburg Medical Center, Pittsburgh, PA 15213, USA; (J.S.G.); (M.W.E.)
| | - Jennifer A. Lemon
- Medical Sciences Division, Northern Ontario School of Medicine, Sudbury, ON P3E 2C6, Canada; (J.A.L.); (D.R.B.)
| | - Douglas R. Boreham
- Medical Sciences Division, Northern Ontario School of Medicine, Sudbury, ON P3E 2C6, Canada; (J.A.L.); (D.R.B.)
| | - Dmitri Popov
- Advanced Medical Technologies and Systems Inc., Richmond Hill, ON L4B 1N1, Canada;
| | | | - Nandita Ramkumar
- Center for Space Medicine, Baylor College of Medicine, Houston, TX 77030, USA;
| | - Jeffrey A. Jones
- Center for Space Medicine, Department of Urology, Baylor College of Medicine, Houston, TX 77030, USA
- Correspondence:
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Şeker ME, Çelik A, Dost K, Erdoğan A. Investigation of Phenolic Content in Five Different Pine Barks Species Grown in Turkey by HPLC-UV and LC-MS. J Chromatogr Sci 2021; 59:491-501. [PMID: 33634307 DOI: 10.1093/chromsci/bmab022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 08/08/2020] [Accepted: 02/06/2021] [Indexed: 11/13/2022]
Abstract
Investigation of phenolic content from different pine bark species grown in Turkey was performed using a reversed-phase high pressure liquid chromatography with ultraviolet (RP-HPLC-UV) method. All phenolic constituents were separated in <26 min on reversed-phase C18 column with gradient mobile phase that consists of orthophosphoric acid, methanol and acetonitrile. Detections were made on an UV detector at 280 nm and at a flow rate of 1 mL/min. Samples were prepared according to Masqueller's conventional sample preparation method with slight modifications. To avoid the reduction in extraction efficiency the sample preparation step was carried out under argon atmosphere. The linearity of the method was between 0.9994 and 0.9999. The detection limits for the five phenolic constituents ranged from 0122 to 0.324 mg/L. Catechin and taxifolin were found in all pine barks at a concentration of 0.065 ± 0.002-1.454 ± 0.004 and 0.015 ± 0.001-23.164 ± 0.322 mg/g, respectively. Epicatechin was determined in four pine barks between 0.027 ± 0.001 and 0.076 ± 0.002 mg/g, ferulic acid in two pine barks between 0.010 ± 0.001 and 0.022 ± 0.001 mg/g and epicatechin gallate in only one of the pine barks at 0.025 ± 0.001 mg/g. Finally, the total amount of phenolic compounds and antioxidant capacities of the pine barks were found to be very high.
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Affiliation(s)
- Mehmet Emin Şeker
- Department of Chemistry, Faculty of Science and Letters, Manisa Celal Bayar University, Yağcilar Mahallesi, 45140, Yunusemre, Manisa-Turkey, Manisa, Turkey.,Department of Medicinal and Aromatic Plants, Giresun University, Espiye 28600, Espiye/Giresun-Turkey, Giresun, Turkey
| | - Ali Çelik
- Department of Chemistry, Faculty of Science and Letters, Manisa Celal Bayar University, Yağcilar Mahallesi, 45140, Yunusemre, Manisa-Turkey, Manisa, Turkey
| | - Kenan Dost
- Department of Chemistry, Faculty of Science and Letters, Manisa Celal Bayar University, Yağcilar Mahallesi, 45140, Yunusemre, Manisa-Turkey, Manisa, Turkey
| | - Ayşegül Erdoğan
- EGE MATAL (Ege University Application and Research Center for Testing and Analysis), Ege University, Bornova, 35100 İzmir, Bornova-İzmir-Turkey, Turkey
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Leis Ayres E, Dos Santos Silva J, Eberlin S, Facchini G, Vasconcellos C, Da Costa A. Invitro effect of pine bark extract on melanin synthesis, tyrosinase activity, production of endothelin-1, and PPAR in cultured melanocytes exposed to Ultraviolet, Infrared, and Visible light radiation. J Cosmet Dermatol 2021; 21:1234-1242. [PMID: 33960120 DOI: 10.1111/jocd.14202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND French maritime pine bark (Pinus pinaster) extract (PBE), the registered trade name of which is Pycnogenol® , has been studied for its depigmenting action due to its antioxidant, anti-inflammatory, and anti-melanogenic activity. However, the mechanisms through which PBE are still not fully clear. OBJECTIVE Evaluate the impact of PBE on four in vitro parameters closely associated with cutaneous pigmentation, including melanin synthesis, tyrosinase activity, endothelin-1 (ED1), and production of peroxisome proliferator-activated receptor α, δ, and γ (PPAR α, δ, and γ), by studying the modulation of action of ultraviolet radiation A (UVA)/ultraviolet radiation B (UVB), infrared-A (IR-A), visible light (VL), and association of UVA/UVB, IR-A, and VL (ASS). METHODS Human melanocytes were incubated in a dry extract solution of PBE, exposed to UVA/UVB, IR-A, VL, and ASS for subsequent quantification of melanin, ED1, and PPAR α, δ, and γ. The effects of PBE on inhibition of tyrosinase activity were also performed by monophenolase activity assay. RESULTS UVA/UVB, IR-A, VL, and ASS radiation caused significant increases in the synthesis of melanin, ED1, and PPAR α, δ, and γ when compared to baseline control. However, PBE significantly reduced the production of melanin, ED1, and PPAR α, δ, and γ, as well as reducing about 66.5% of the tyrosinase activity. CONCLUSIONS PBE reduces in vitro melanin production by downregulating tyrosinase and reducing pigmentation-related mediators, such as ED1 and PPAR α, δ, and γ, therefore contributing to the inhibition of pathways associated with skin hyperpigmentation.
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Affiliation(s)
- Eloisa Leis Ayres
- Instituto de Assistência Médica ao Servidor Público Estadual, São Paulo, Brazil
| | | | - Samara Eberlin
- Kosmoscience Ciência e Tecnologia Cosmética Ltda, Campinas, Brazil
| | - Gustavo Facchini
- Kosmoscience Ciência e Tecnologia Cosmética Ltda, Campinas, Brazil
| | - Cidia Vasconcellos
- Instituto de Assistência Médica ao Servidor Público Estadual, São Paulo, Brazil
| | - Adilson Da Costa
- Instituto de Assistência Médica ao Servidor Público Estadual, São Paulo, Brazil
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Ferreira-Santos P, Ibarz R, Fernandes JM, Pinheiro AC, Botelho C, Rocha CMR, Teixeira JA, Martín-Belloso O. Encapsulated Pine Bark Polyphenolic Extract during Gastrointestinal Digestion: Bioaccessibility, Bioactivity and Oxidative Stress Prevention. Foods 2021; 10:foods10020328. [PMID: 33557122 PMCID: PMC7913864 DOI: 10.3390/foods10020328] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 12/19/2022] Open
Abstract
Polyphenolic extracts from pine bark have reported different biological actions and promising beneficial effects on human health. However, its susceptibility to environmental stresses (temperature, storage, etc.) and physiological human conditions prequires the development of efficient protection mechanisms to allow effective delivering of functionality. The aim of this work was to encapsulate pine bark extract rich phenolic compounds by spray-drying using maltodextrin, and understand the influence of encapsulation on the antioxidant and antimicrobial activity and bioaccessibility of phenolic compounds during gastrointestinal digestion. The optimized process conditions allowed good encapsulation efficiency of antioxidant phenolic compounds. The microencapsulation was effective in protecting those compounds during gastrointestinal conditions, controlling their delivery and enhancing its health benefits, decreasing the production of reactive oxygen species implicated in the process of oxidative stress associated with some pathologies. Finally, this encapsulation system was able to protect these extracts against acidic matrices, making the system suitable for the nutritional enrichment of fermented foods or fruit-based beverages, providing them antimicrobial protection, because the encapsulated extract was effective against Listeria innocua. Overall, the designed system allowed protecting and appropriately delivering the active compounds, and may find potential application as a natural preservative and/or antioxidant in food formulations or as bioactive ingredient with controlled delivery in pharmaceuticals or nutraceuticals.
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Affiliation(s)
- Pedro Ferreira-Santos
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
| | - Raquel Ibarz
- Agrotecnio Center, Department of Food Technology, University of Lleida, 25003 Lleida, Spain; (R.I.); (O.M.-B.)
| | - Jean-Michel Fernandes
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
| | - Ana Cristina Pinheiro
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
| | - Cláudia Botelho
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
| | - Cristina M. R. Rocha
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
| | - José António Teixeira
- Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal; (P.F.-S.); (J.-M.F.); (A.C.P.); (C.B.); (C.M.R.R.)
- Correspondence: ; Tel.: +351-253604406
| | - Olga Martín-Belloso
- Agrotecnio Center, Department of Food Technology, University of Lleida, 25003 Lleida, Spain; (R.I.); (O.M.-B.)
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Dridi W, Bordenave N. Pine Bark Phenolic Extracts, Current Uses, and Potential Food Applications: A Review. Curr Pharm Des 2020; 26:1866-1879. [PMID: 32048960 DOI: 10.2174/1381612826666200212113903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/18/2019] [Indexed: 12/20/2022]
Abstract
PURPOSE To summarize the main findings from research on food uses of Pine Bark Phenolic Extracts (PBPE), their origin, methods of extraction, composition, health effects, and incorporation into food products. METHODS A narrative review of all the relevant papers known to the authors was conducted. RESULTS PBPE are mainly extracted from the bark Pinus pinaster. They are generally rich in procyanidins and their effects on health in the form of nutritional supplements include effect on some forms of cancer, on diabetes, on eye and skin health. Their method of extraction influences greatly their composition and yield, and commercially suitable methods are still to be developed. Incorporation into food products raises challenges related to bioavailability and subsequent bioactivity and sensory properties of the final products. CONCLUSION PBPE represent an opportunity for the development of functional foods with phenolic-rich bioactive compounds.
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Affiliation(s)
- Wafa Dridi
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Nicolas Bordenave
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
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14
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New Herbal Biomedicines for the Topical Treatment of Dermatological Disorders. Biomedicines 2020; 8:biomedicines8020027. [PMID: 32046246 PMCID: PMC7168306 DOI: 10.3390/biomedicines8020027] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/03/2020] [Accepted: 02/06/2020] [Indexed: 11/17/2022] Open
Abstract
Herbal extracts and isolated plant compounds play an increasing role in the treatment of skin disorders and wounds. Several new herbal drugs, medicinal products and cosmetic products for the treatment of various skin conditions have been developed in recent years. In this nonsystematic review, we focus on herbal drugs that were tested in controlled clinical studies or in scientifically sound preclinical studies. The herbal biomedicines are intended to treat atopic dermatitis (St. John's wort, licorice, tormentil, bitter substances, evening primrose), psoriasis (araroba tree, lace flower, barberry bark, indigo, turmeric, olibanum, St. John's wort), actinic keratosis (birch bark, petty spurge), herpes simplex (lemon balm, sage and rhubarb), rosacea (green tea, licorice, tormentil) and acne vulgaris (tea tree oil, green tea, hop), or to improve photo protection (green tea, Dyer's weed, cocoa tree, carotinoids, licorice), aesthetic dermatology (licorice, pine bark, gotu kola) and wound healing (birch bark, onion).
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15
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Groten K, Marini A, Grether-Beck S, Jaenicke T, Ibbotson SH, Moseley H, Ferguson J, Krutmann J. Tomato Phytonutrients Balance UV Response: Results from a Double-Blind, Randomized, Placebo-Controlled Study. Skin Pharmacol Physiol 2019; 32:101-108. [PMID: 30836363 DOI: 10.1159/000497104] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 01/18/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Our previous double-blinded, placebo-controlled cross-over study indicated that a nutritional supplement named lycopene-rich tomato nutrient complex (TNC) can protect from UVA1-induced (340-400 nm) and UVA- (320-400 nm)/UVB-induced (280-320 nm) upregulation of molecular markers associated with oxidative stress, inflammation, and ageing. OBJECTIVES in the current double-blind, randomized, placebo-controlled multicenter study, we analyze whether a similar, synergistic carotenoid-rich TNC can protect from broadband UVB-induced threshold erythema formation assessed as increase in minimal erythemal dose (MED) reading, the intensity of erythema formation, and the upregulation of molecular markers associated with inflammation and immunosuppression, and whether this correlates with carotenoid blood levels. METHODS One hundred and forty-nine healthy volunteers were randomized to two groups and subjected to a 5-week washout phase, followed by a 12-week treatment phase receiving either 15 mg lycopene, 5.8 mg phytoene and phytofluene, 0.8 mg β-carotene, 5.6 mg tocopherols from tomato extract, and 4 mg carnosic acid from rosemary extract per day or placebo made from medium-chain triglycerides. At the end of each phase, MED determination, UVB irradiation, chromametry, biopsies, and blood samples were undertaken. RESULTS The active supplement was well tolerated. Interestingly, no significant difference was seen in the MED between the active-supplement and placebo groups, as determined by visual grading by expert assessors. Of note, the carotenoid-containing supplement significantly protected against UVB-induced erythema formation measured as Δa* after the intervention minus Δa* after the washout phase as compared to the placebo. Moreover, intake of the active supplement significantly protected against UVB-induced upregulation of IL6 and TNFα as compared with the intake of placebo. Lastly, carotenoid plasma levels were significantly increased. CONCLUSION This well-tolerated carotenoid-containing supplement significantly protected against UVB-induced erythema formation and upregulation of proinflammatory cytokines in healthy volunteers.
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Affiliation(s)
- Katharina Groten
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Alessandra Marini
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Susanne Grether-Beck
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Thomas Jaenicke
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Sally H Ibbotson
- Department of Dermatology, Ninewells Hospital and Medical School, Dundee, United Kingdom
| | - Harry Moseley
- Department of Dermatology, Ninewells Hospital and Medical School, Dundee, United Kingdom
| | - James Ferguson
- Department of Dermatology, Ninewells Hospital and Medical School, Dundee, United Kingdom
| | - Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany, .,Medical Faculty, Heinrich Heine University, Düsseldorf, Germany,
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16
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Braun N, Binder S, Grosch H, Theek C, Ülker J, Tronnier H, Heinrich U. Current Data on Effects of Long-Term Missions on the International Space Station on Skin Physiological Parameters. Skin Pharmacol Physiol 2018; 32:43-51. [PMID: 30485843 DOI: 10.1159/000494688] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/18/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND Skin reaction to spaceflight has not really been studied yet, although the skin has a very important barrier function to protect the body and can contribute to a more general understanding of physiology. It is proposed here to make a more thorough investigation of the skin during long-term spaceflight, using noninvasive techniques. AIMS The aim of the present Skin-B study is to investigate the kinetics and range of possible skin modifications during long-duration spaceflights and their recovery. METHODS In order to investigate the effect on skin physiological parameters during spaceflight, measurements were carried out on 6 astronauts with respect to skin hydration, transepidermal water loss/barrier function, and surface evaluation of the living skin in orbit. Additional measured parameters on the ground were skin elasticity, skin density and thickness, as well as microcirculation. RESULTS Data from the Skin-B subjects (n = 6) contradict the results obtained in the previous pilot study SkinCare (n = 1 subject). In the present study, no deterioration of the skin was found but rather an improvement in skin hydration and skin barrier function, and no changes or improvement in the appearance of the skin surface. Furthermore, the skin density and skin thickness as well as skin elasticity values were unchanged from pre-flight values. CONCLUSION In conclusion, we found that spaceflight under present conditions has no negative impact on skin physiological parameters.
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Affiliation(s)
- Nicole Braun
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany,
| | - Sabrina Binder
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany
| | - Hanna Grosch
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany
| | - Carmen Theek
- Carmen Theek Statistikservice - CTS, Witten, Germany
| | - Jasmina Ülker
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany
| | - Hagen Tronnier
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany
| | - Ulrike Heinrich
- DermaTronnier, Institute for Experimental Dermatology, Witten/Herdecke University, Witten, Germany
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Meinke MC, Nowbary CK, Schanzer S, Vollert H, Lademann J, Darvin ME. Influences of Orally Taken Carotenoid-Rich Curly Kale Extract on Collagen I/Elastin Index of the Skin. Nutrients 2017; 9:nu9070775. [PMID: 28753935 PMCID: PMC5537889 DOI: 10.3390/nu9070775] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/10/2017] [Accepted: 07/14/2017] [Indexed: 12/17/2022] Open
Abstract
Two differently designed, spatially resolved reflectance spectroscopy-based scanners and two-photon tomography were used for noninvasive in vivo determination of cutaneous carotenoids, and collagen I/elastin aging index of dermis, respectively, in the skin of 29 healthy female volunteers between 40 and 56 years of age. The volunteers received a supplement in the form of a carotenoid-rich natural curly kale extract containing 1650 µg of carotenoids in total (three capsules of 550 µg), once a day. Measurements were taken before, after 5 months and after 10 months of daily supplementation. The results showed significantly increased values for the cutaneous carotenoids and the collagen I/elastin aging index of dermis 5 and 10 months after the beginning of the study. The obtained results show that a natural carotenoid-rich extract could prevent the aging-related collagen I degradation in the dermis and improve the extracellular matrix.
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Affiliation(s)
- Martina C Meinke
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center of Experimental and Applied Cutaneous Physiology (CCP), Department of Dermatology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Ceylan K Nowbary
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center of Experimental and Applied Cutaneous Physiology (CCP), Department of Dermatology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Sabine Schanzer
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center of Experimental and Applied Cutaneous Physiology (CCP), Department of Dermatology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Henning Vollert
- Bioactive Food GmbH, Am Ihlsee 36a, 23795 Bad Segeberg, Germany.
| | - Jürgen Lademann
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center of Experimental and Applied Cutaneous Physiology (CCP), Department of Dermatology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Maxim E Darvin
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center of Experimental and Applied Cutaneous Physiology (CCP), Department of Dermatology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
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18
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Zhou LL, Baibergenova A. Melasma: systematic review of the systemic treatments. Int J Dermatol 2017; 56:902-908. [DOI: 10.1111/ijd.13578] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 12/16/2016] [Accepted: 01/10/2017] [Indexed: 11/27/2022]
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19
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Meinke MC, Schanzer S, Lohan SB, Shchatsinin I, Darvin ME, Vollert H, Magnussen B, Köcher W, Helfmann J, Lademann J. Comparison of different cutaneous carotenoid sensors and influence of age, skin type, and kinetic changes subsequent to intake of a vegetable extract. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:107002. [PMID: 27762423 DOI: 10.1117/1.jbo.21.10.107002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
In the last decade, cutaneous carotenoid measurements have become increasingly popular, as carotenoids were found to be a biomarker of nutrition rich in fruits and vegetables, permitting monitoring of the influence of various stress factors. For such measurements, in addition to the specific and selective resonance Raman spectroscopy (RRS), newly developed low expensive small and mobile sensors that are based on spatially resolved reflectance spectroscopy (SRRS) are used for cutaneous carotenoid measurements. Human volunteers of different age exhibiting skin types I to III were investigated using RRS and two SRRS-based sensors to determine the influence of these parameters on the measuring results. In two studies on volunteers of either the same age or skin type, however, the respective other parameter being varied and no significant influences of age or skin type could be detected. Furthermore, the kinetic changes resulting from the intake and discontinued intake of a vegetable extract rich in carotenoids showed a good correlation among the three sensors and with the detected blood carotenoids. This illustrates that the SRRS-based sensors and RRS device provide reliable cutaneous carotenoid values independent of age and skin types I to III of the volunteers.
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Affiliation(s)
- Martina C Meinke
- Charité - Universitätsmedizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Sabine Schanzer
- Charité - Universitätsmedizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Silke B Lohan
- Charité - Universitätsmedizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Ihar Shchatsinin
- Laser- und Medizin Technologie GmbH Berlin, Fabeckstr. 60-62, 14195 Berlin, Germany
| | - Maxim E Darvin
- Charité - Universitätsmedizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Henning Vollert
- BioActive Food GmbH, Am Ihlsee 36a, 23795 Bad Segeberg, Germany
| | - Björn Magnussen
- Opsolution GmbH, Wilhelmshöher Allee 273a, 34131 Kassel, Germany
| | - Wolfang Köcher
- Opsolution GmbH, Wilhelmshöher Allee 273a, 34131 Kassel, Germany
| | - Jürgen Helfmann
- Laser- und Medizin Technologie GmbH Berlin, Fabeckstr. 60-62, 14195 Berlin, Germany
| | - Jürgen Lademann
- Charité - Universitätsmedizin Berlin, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
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20
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Działo M, Mierziak J, Korzun U, Preisner M, Szopa J, Kulma A. The Potential of Plant Phenolics in Prevention and Therapy of Skin Disorders. Int J Mol Sci 2016; 17:160. [PMID: 26901191 PMCID: PMC4783894 DOI: 10.3390/ijms17020160] [Citation(s) in RCA: 297] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/05/2016] [Accepted: 01/14/2016] [Indexed: 12/14/2022] Open
Abstract
Phenolic compounds constitute a group of secondary metabolites which have important functions in plants. Besides the beneficial effects on the plant host, phenolic metabolites (polyphenols) exhibit a series of biological properties that influence the human in a health-promoting manner. Evidence suggests that people can benefit from plant phenolics obtained either by the diet or through skin application, because they can alleviate symptoms and inhibit the development of various skin disorders. Due to their natural origin and low toxicity, phenolic compounds are a promising tool in eliminating the causes and effects of skin aging, skin diseases, and skin damage, including wounds and burns. Polyphenols also act protectively and help prevent or attenuate the progression of certain skin disorders, both embarrassing minor problems (e.g., wrinkles, acne) or serious, potentially life-threatening diseases such as cancer. This paper reviews the latest reports on the potential therapy of skin disorders through treatment with phenolic compounds, considering mostly a single specific compound or a combination of compounds in a plant extract.
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Affiliation(s)
- Magdalena Działo
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
| | - Justyna Mierziak
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
| | - Urszula Korzun
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
| | - Marta Preisner
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
| | - Jan Szopa
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
- Department of Genetics, Plant Breeding and Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Plant Sciences, Plac Grunwaldzki 24A, 53-363 Wroclaw, Poland.
| | - Anna Kulma
- Faculty of Biotechnology, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland.
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