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Someko H, Yamamoto N, Ito T, Suzuki T, Tsuge T, Yabuzaki H, Dohi E, Kataoka Y. Misleading presentations in functional food trials led by contract research organizations were frequently observed in Japan: meta-epidemiological study. J Clin Epidemiol 2024; 169:111302. [PMID: 38417584 DOI: 10.1016/j.jclinepi.2024.111302] [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: 11/22/2023] [Revised: 02/09/2024] [Accepted: 02/19/2024] [Indexed: 03/01/2024]
Abstract
OBJECTIVES The functional food market has experienced significant growth, leading to an uptick in clinical trials conducted by contract research organizations (CROs). Research focusing on CRO-managed trials and the communication of trial outcomes to the consumer market remains underexplored. This metaepidemiological study aims to evaluate the quality of randomized controlled trials (RCTs) facilitated by prominent CROs in Japan and to examine the quality of the representations used to convey their results to consumers. STUDY DESIGN AND SETTING This study focused on the food trials that were registered in the University Hospital Medical Information Network Clinical Trial Registry or the International Clinical Trials Registry Platform by the top 5 CROs. Press releases of study results or advertisements of food products based on the study results were identified by conducting a Google search. The risk of bias in the RCT publications was independently assessed by 2 reviewers, who also evaluated the presence of "spin" in the abstracts and full texts. An assessment of "spin" in press releases/advertisements was undertaken. RESULTS A total of 76 RCT registrations, 32 RCT publications, and 11 press releases/advertisements were included. Approximately 72% of the RCT publications exhibited a high risk of bias due to selective outcome reporting. "Spin" was present in the results of the abstract (72%), abstract conclusion (81%), full-text results (44%), and full-text conclusion (84%). "Spin" appeared in 73% of press releases/advertisements due to the selective outcome reporting. CONCLUSION Functional food presentations in Japan frequently contained "spin." The Japanese government should more rigorously check whether food manufacturers report outcomes selectively.
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Affiliation(s)
- Hidehiro Someko
- Department of General Internal Medicine, Asahi General Hospital, I-1326, Asahi, Chiba, 289-2511, Japan; Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan.
| | - Norio Yamamoto
- Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan; Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Tatsuya Ito
- Department of Regulatory Science and Pharmaceutical Informatics, School of Pharmaceutical Sciences, Wakayama Medical University, Shichibancho 25-1, Wakayama, 640-8156, Japan
| | - Tomoharu Suzuki
- Department of Hospital Medicine, Urasoe General Hospital, Maeda 1-56-1, Urasoe, Okinawa, 901-2102, Japan
| | - Takahiro Tsuge
- Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan; Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan; Department of Rehabilitation, Kurashiki Medical Center, 250 Bakuro, Kurashiki, Okayama, 710-8522, Japan
| | - Hajime Yabuzaki
- Department of Neurological Surgery, Koga Community Hospital, Daikakuji 2-30-1, Yaizu, Shizuoka, 425-0088, Japan
| | - Eisuke Dohi
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Ogawahigashi-cho 4-1-1, Kodaira, Tokyo, 187-8502, Japan
| | - Yuki Kataoka
- Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan; Department of Internal Medicine, Kyoto Min-iren Asukai Hospital, Tanaka Asukai-cho 89, Kyoto, 606-8226, Japan; Section of Clinical Epidemiology, Department of Community Medicine, Kyoto University Graduate School of Medicine, Shogoin Kawara-cho 54, Kyoto, 606-8507, Japan; Department of Healthcare Epidemiology, Kyoto University Graduate School of Medicine/School of Public Health, Yoshida Konoe-cho, Kyoto, 606-8501, Japan
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Filatov V, Sokolova A, Savitskaya N, Olkhovskaya M, Varava A, Ilin E, Patronova E. Synergetic Effects of Aloe Vera Extract with Trimethylglycine for Targeted Aquaporin 3 Regulation and Long-Term Skin Hydration. Molecules 2024; 29:1540. [PMID: 38611819 PMCID: PMC11013907 DOI: 10.3390/molecules29071540] [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: 01/31/2024] [Revised: 03/21/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Aquaporin 3 (AQP3) channels are tetrameric membrane-bound channels that facilitate the transport of water and other small solutes across cell membranes in the skin. Decreased AQP3 expression is associated with skin dryness, skin aging, psoriasis, and delayed wound healing. Thus, our study focused on a novel combination based on Aloe barbadensis leaf extract and trimethylglycine for targeted AQP3 regulation in skin keratinocytes and deep skin moisturization. Firstly, a dose-finding cytotoxicity assay of the selected substances was performed with a 2,5-diphenyl-2H-tetrazolium bromide (MTT) indicator on HaCaT cells. The substances' ability to increase the amount of AQP3 in keratinocytes was evaluated in a keratinocyte cell culture by means of ELISA. Additionally, the deep skin hydration effect was confirmed in clinical research with healthy volunteers. According to the results, the maximum tolerated doses providing viability at 70% (MTDs) values for Aloe barbadensis leaf extract and trimethylglycine were 24.50% and 39.00%, respectively. Following the research and development, a complex based on Aloe barbadensis leaf extract and trimethylglycine in a 1:1 mass ratio exhibited a good cytotoxicity profile, with an MTDs value of 37.90%. Furthermore, it was shown that the combination had a clear synergetic effect and significantly increased AQP3 by up to 380% compared to the negative control and glyceryl glucoside (p < 0.001). It was clinically confirmed that the developed shower gel containing Aloe barbadensis leaf extract and trimethylglycine safely improved skin hydration after one use and over 28 days. Thus, this novel plant-based combination has promising potential for AQP3 regulation in the skin epidermis and a role in the development of dermatological drugs for the treatment of skin xerosis and atopic-related conditions.
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Affiliation(s)
- Viktor Filatov
- Science Center, SkyLab AG, 1066 Lausanne, Switzerland (N.S.); (E.P.)
- Department of Pharmaceutical Chemistry and Organization of Pharmaceutical Business, Faculty of Basic Medicine, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Anna Sokolova
- Science Center, SkyLab AG, 1066 Lausanne, Switzerland (N.S.); (E.P.)
| | | | | | - Andrey Varava
- Science Center, SkyLab AG, 1066 Lausanne, Switzerland (N.S.); (E.P.)
| | - Egor Ilin
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
- N. D. Zelinsky Institute of Organic Chemistry, Moscow 119991, Russia
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Bentarhlia N, Kartah BE, Fadil M, El Harkaoui S, Matthäus B, Abboussi O, Abdelmoumen H, Bouhnik O, El Monfalouti H. Exploring the wound-healing and antimicrobial potential of Dittrichia viscosa L lipidic extract: Chemical composition and in vivo evaluation. Fitoterapia 2024; 172:105707. [PMID: 37866421 DOI: 10.1016/j.fitote.2023.105707] [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: 08/08/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/24/2023]
Abstract
Dittrichia viscosa belongs to the Dittrichia genus, it grows abundantly in the east and northeast of Morocco, and traditionally its fresh leaves are crushed and given for topical application after burns, wounds, and infections. In this study, we examine the wound-healing activity of Dittrichia viscosa lipidic extract in vivo, assess its anti-microbial effect, and explore the specific compounds that contribute to these effects. To assess the effectiveness of wound healing, a burn-induced wound model was employed in Wistar rats, and the levels of hydroxyproline as well as histopathological changes in the skin tissues were evaluated. Furthermore, the antimicrobial potential against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Candida glabrata, and Malassezia furfur was investigated using the agar disc diffusion method. Gas Chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) techniques were employed to analyze the composition of fatty acids, phytosterols, and tocopherols. Topical application of Dittrichia viscosa lipidic fraction ointment exhibited significant improvements in wound contraction, achieving an impressive rate of 82% within 21 days. Additionally, the lipidic extract of Dittrichia viscosa displayed notable efficacy against various microbial strains, including Candida albicans (25.07 ± 0.2), Candida glabrata (24 ± 0.6), and Malassezia furfur (22 ± 0.7). The primary fatty acids identified in the sample were linolenic acid (58.95% ± 0), oleic acid (16.75% ±0.04), and linoleic acid (11.97% ± 0.1). Notably, the sample contained significant amounts of γ-Tocopherols (732.08 ± 21mg/kg), while the sterol fraction primarily consisted of 7-Campesterol (1937 ± 0 mg/kg), 7-β-Sitosterol (1621 ± 0 mg/kg), and Stigmasterol (1439 ± 26 mg/kg). By its richness in active compound content, Dittrichia viscosa effectively accelerates wound healing while safeguarding against microbial infections.
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Affiliation(s)
- Noura Bentarhlia
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco
| | - Badr Eddine Kartah
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco
| | - Mouhcine Fadil
- Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques, Sidi Mohamed Ben Abdellah University in Fez, BP 2626, Fes, 30000, Morocco
| | - Said El Harkaoui
- Max Rubner-Institut, Federal Research Institute for Nutrition and Food, Department for Safety and Quality of Cereals, Working Group for Lipid Research, Schützenberg 12, 32756 Detmold, Germany
| | - Bertrand Matthäus
- Max Rubner-Institut, Federal Research Institute for Nutrition and Food, Department for Safety and Quality of Cereals, Working Group for Lipid Research, Schützenberg 12, 32756 Detmold, Germany
| | - Oualid Abboussi
- Team of Physiology and Physiopathology, Research Center in Genomic of Human Pathologies, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco
| | - Hanaa Abdelmoumen
- Center for Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco
| | - Omar Bouhnik
- Center for Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco
| | - Hanae El Monfalouti
- Laboratory of Plant Chemistry, Organic and Bioorganic Synthesis, Faculty of Sciences, Mohammed V University in Rabat, 4 Avenue Ibn Battouta B.P., RP 1014, Morocco.
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Dewi DAR, Arimuko A, Norawati L, Yenny SW, Setiasih NL, Perdiyana A, Arkania N, Nadhira F, Wiliantari N. Exploring the Impact of Hydrolyzed Collagen Oral Supplementation on Skin Rejuvenation: A Systematic Review and Meta-Analysis. Cureus 2023; 15:e50231. [PMID: 38192916 PMCID: PMC10773595 DOI: 10.7759/cureus.50231] [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] [Accepted: 12/09/2023] [Indexed: 01/10/2024] Open
Abstract
With increasing life expectancy, the quest for skin rejuvenation has gained prominence among individuals of diverse age groups. The popularity of nutricosmetics, notably dietary supplements, has garnered significant attention in recent years. Many scientific investigations have amassed compelling evidence highlighting the positive impact of hydrolyzed collagen supplementation in mitigating the visible signs of skin aging. This study aims to know the powerful effect of hydrolyzed collagen on the skin. This research method is to conduct a systematic review followed by a meta-analysis of the clinical trial focusing on randomized, double-blind, and controlled trials that examined the oral consumption of hydrolyzed collagen and reported outcomes related to skin aging, wrinkles, moisture levels, elasticity, and firmness. The selected articles from CENTRAL, PubMed, Google Scholar, and ScienceDirect databases were published from 2017 to 2023. The subsequent meta-analysis, comprising 14 distinct studies and a collective cohort of 967 participants, revealed encouraging findings favoring hydrolyzed collagen supplementation. It consistently demonstrated substantial enhancements in skin moisture levels and elasticity compared to the placebo group, a trend robustly corroborated by subgroup analysis. These compelling findings underscore the effectiveness of a 12-week regimen of hydrolyzed collagen supplementation in revitalizing the skin by augmenting its hydration and elasticity.
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Affiliation(s)
- Dian Andriani Ratna Dewi
- Department of Dermatovenereology, The Republic of Indonesia Defense University, Bogor, IDN
- Department of Dermatovenereology, Gatot Soebroto Army Hospital, Central Jakarta, IDN
| | - Abraham Arimuko
- Department of Dermatovenereology, Gatot Soebroto Army Hospital, Central Jakarta, IDN
| | - Lilik Norawati
- Department of Dermatovenereology, Gatot Soebroto Army Hospital, Central Jakarta, IDN
| | - Satya W Yenny
- Department of Dermatovenereology, Faculty of Medicine, Andalas University, Padang, IDN
| | - Nenden L Setiasih
- Department of Dermatovenereology, Faculty of Medicine, Yarsi University, Central Jakarta, IDN
| | - Angki Perdiyana
- Department of Dermatovenereology, Faculty of Military Medicine, The Republic of Indonesia Defense University, Bogor, IDN
| | - Nabila Arkania
- Department of Dermatovenereology, Faculty of Medicine, Public Health, and Nursing, Gadjah Mada University, Special Region of Yogyakarta, IDN
| | - Farrasila Nadhira
- Department of Dermatovenereology, Ratna Dewi Principal Clinic, Bekasi, IDN
| | - Ni Wiliantari
- Department of Dermatovenereology, Faculty of Military Medicine, The Republic of Indonesia Defense University, Bogor, IDN
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Abdelnour A, Adlam T, Potts GA. Effects of Plant-Derived Dietary Supplements on Skin Health: A Review. Cureus 2023; 15:e40892. [PMID: 37492817 PMCID: PMC10364564 DOI: 10.7759/cureus.40892] [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] [Accepted: 06/24/2023] [Indexed: 07/27/2023] Open
Abstract
Dietary supplements have become increasingly popular to improve facial appearance and optimize skin health. With countless supplements available online and in stores, there are unlimited options for patients to choose from. Federal law does not require the Food and Drug Administration to assess each product's efficacy before its appearance on the market. Therefore, evidence-based medicine is vital for dermatologists to provide adequate recommendations regarding the safety and efficacy of various dietary supplements. The goal of this review is to evaluate plant-derived, antioxidant oral supplements and their effects on wrinkle appearance, skin hydration, skin elasticity, and photoprotection.
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Affiliation(s)
- Alyssa Abdelnour
- Department of Dermatology, Michigan State University College of Human Medicine, Grand Rapids, USA
| | - Taylor Adlam
- Department of Dermatology, Wayne State University, Detroit, USA
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Sun Q, Wu J, Qian G, Cheng H. Effectiveness of Dietary Supplement for Skin Moisturizing in Healthy Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Front Nutr 2022; 9:895192. [PMID: 35719159 PMCID: PMC9201759 DOI: 10.3389/fnut.2022.895192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background The dietary supplement industry offers many oral cosmetics that purportedly assist in skin moisturization often with unclear evidence supporting efficacy and safety. To update the accessible proofs pertaining to the safety and effectiveness of oral dietary supplements to facilitate skin moisturizing via an all-around review and meta-analysis. Methods Three on-line databases [Pubmed, Embase, and Cochrane Library (CENTRAL)] were retrieved from January 2000 to November 2021. An overall 66 randomized controlled trials (RCTs) of skin care were recognized. Meta-analysis was performed for dietary supplements with four or more available research. Results Oral collagen or ceramide resulted in a statistically significant increase in skin hydration and a decrease in transepidermal water loss (TEWL) compared to placebo. No benefits regarding the improvement of skin conditions in terms of water content and TEWL were observed for lactic acid bacteria or Lactobacillus fermented foods. A statistically significant and positive effect on skin hydration was observed for both hyaluronan and procyanidin, with an unknown effect on TEWL due to insufficient RCTs. There was a non-significant improvement in the water content of stratum corneum for astaxanthin based on subgroup analyses. Among the dietary supplements trialed in ≤ 3 RCTs, the judgment regarding their effects on skin moisturizing was prevented by inconsistent conclusions as well as insufficient research. All food supplements were safe throughout the research (normally ≤ 24 weeks). Conclusion Oral dietary supplements, including collagen, ceramides, hyaluronan, and procyanidin, were proven to be effective for skin moisturization. At present, for skin moisturization, the proofs supporting the recommendation of other dietary supplements, such as lactic acid bacteria and astaxanthin, are insufficient. Systematic Review Registration http://www.crd.york.ac.uk/PROSPERO/ identifier CRD42021290818.
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Affiliation(s)
- Qian Sun
- Department of Medical Cosmetology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jingping Wu
- Department of Medical Cosmetology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Guofei Qian
- Haisco Pharmaceutical Group Company Ltd., Chengdu, China
| | - Hongbin Cheng
- Dermatology Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Anti-Skin-Aging Effect of a Treatment with a Cosmetic Product and a Food Supplement Based on a New Hyaluronan: A Randomized Clinical Study in Healthy Women. COSMETICS 2022. [DOI: 10.3390/cosmetics9030054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Hyaluronic acid (HA) has long been used for its anti-age properties, as an ingredient in both topical applications and food supplements. In this study, a novel sodium hyaluronate, based on the innovative full spectrum technology, was administered as an ingredient of a cosmetic product and as the main constituent of a food supplement to evaluate its efficacy in counteracting skin ageing signs. Seventy-five female subjects were randomly assigned to the following treatments for 4 weeks: an active food supplement and a placebo cosmetic product, an active cosmetic product and a placebo food supplement, and a combination of the two products containing the active ingredient, that is, an “In&Out” treatment. The subjects used the placebo cosmetic product for another 14 days. Improvement of all the outcome measures (skin moisturization, elasticity, firmness and profilometry) was achieved by all treatments (p < 0.05); however, the combined treatment resulted in a further amelioration of the skin aging signs with respect to the two single active treatments (p < 0.001), and such effect lasted also after the follow-up period. In conclusion, such results confirmed that the concomitant administration of hyaluronans by these two different routes represents more than an interesting approach to counteract skin aging signs.
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Haghani F, Arabnezhad MR, Mohammadi S, Ghaffarian-Bahraman A. Aloe vera and Streptozotocin-Induced Diabetes Mellitus. REVISTA BRASILEIRA DE FARMACOGNOSIA : ORGAO OFICIAL DA SOCIEDADE BRASILEIRA DE FARMACOGNOSIA 2022; 32:174-187. [PMID: 35287334 PMCID: PMC8908758 DOI: 10.1007/s43450-022-00231-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/12/2022] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus is defined as prolonged hyperglycemia, which can harm the eyes, kidneys, and cardiovascular and neurological systems. Herbal agents and their derived supplements have been used for treatment of diabetes mellitus as a part of integrated complementary medicine for centuries. Numerous studies have considered Aloe vera (L.) Burm.f, Xanthorrhoeaceae, as an alternative medicine due to its abundant bioactive chemicals, such as alkaloids, anthraquinones, and enthrones, with therapeutical properties including antioxidant, anti-inflammatory, neuro-protective, and anti-diabetic effects. Aloe vera has received considerable attention in traditional medicine for the treatment of several diseases including diabetes mellitus. Numerous studies have investigated the effects of herbal agents on diabetes mellitus using a streptozotocin-induced diabetic model. Thereby, this article reviews the effects of Aloe vera prescription on streptozotocin-induced diabetes mellitus to provide a clear insight into the role of this medicinal plant in several biological functions, such as antioxidant, wound healing, anti-inflammatory, anti-hyperglycemic, and anti-hyperlipidemic in diabetic models. Graphical abstract ![]()
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Affiliation(s)
- Fatemeh Haghani
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad-Reza Arabnezhad
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Salman Mohammadi
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Ali Ghaffarian-Bahraman
- Occupational Environment Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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NABESHIMA K, MIZUTANI A, MISAWA E, TANAKA M, YAMAUCHI K, ABE F. Validation of an LC-MS/MS method for the quantitation of phytosterols derived from Aloe vera gel. MethodsX 2022; 9:101642. [PMID: 35273905 PMCID: PMC8902629 DOI: 10.1016/j.mex.2022.101642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/19/2022] [Indexed: 12/01/2022] Open
Abstract
A method to quantitate five minor phytosterols named Aloe sterols identified from Aloe vera gel was validated using AVGP (Aloe vera gel powder) as the sample. To measure the Aloe sterols content, AVGP was extracted with chloroform/methanol (2:1, v/v) and analyzed by liquid chromatography-tandem mass spectrometry. The calibration curve revealed a high coefficient of determination (>0.999). The limit of quantification was 2.3–4.1 ng/mL. Average recoveries ranged from 95 to 105%. The intra-day and inter-day precision were 2.6–6.4% and 3.8–7.3%, respectively, confirming good method precision. Aloe sterols were also quantified in AVGE (Aloe vera gel extract) using this method. We showed that the composition ratio of each Aloe sterol in AVGP did not change in AVGE. Additionally, we measured the concentration of Aloe sterols in the capsule containing AVGE, and confirmed that it was stable even after 1 year of storage. In conclusion, a quantification method was established to simultaneously measure multiple plant sterols with similar structures. • A quantification method to simultaneously measure several plant sterols with similar structures was established. • Results from the intra-day precision and the inter-day precision confirmed good precision. • This method can be applied to processed raw materials and/or foods in long-term storage.
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Xie Y, Zhu G, Yi J, Ji Y, Xia Y, Zheng Y, Ye C. A new product of multi-plant extracts improved skin photoaging: An oral intake in vivo study. J Cosmet Dermatol 2021; 21:3406-3415. [PMID: 34791771 DOI: 10.1111/jocd.14620] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/28/2021] [Accepted: 11/02/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Besides the topical application of cosmetics, nutraceuticals represent a promising strategy for preventing skin photoaging and skin cancers. METHODS To determine the effect of a new multi-plant extracts product containing Cucumis melo extract, acerola extract, olive fruit, aloe vera gel, grape seed extract, and lycopene, a randomized, placebo-controlled, double-blind clinical trial and an ultraviolet (UV)-induced murine photoaging model were deployed. 55 healthy subjects aged 45-60 were enrolled and randomized to take the product or placebo orally for 12 weeks. Skin aging and whitening indexes were measured with non-invasive techniques. 90 Balb/c mice aged 7-8 weeks were randomly divided into six groups: normal, UV, UV+vehicle, UV+different doses of the product (0.500 g/kg.BW, 0.250 g/kg.BW, 0.125 g/kg.BW, respectively). Except the normal group, mid-dorsal regions were irradiated with UVA+UVB for 8 weeks. Factors of oxidative stress, tyrosinase, and histological analysis of the mid-dorsal skin were determined. RESULTS In the clinical trial, the TEWL, hydration, sebum, elasticity, and the L*, a*, melanin index change from baseline, ITA° were significantly improved in the experiment group. In the animal experiment, compared to the UV+vehicle group, UV+high dose group showed significantly lower malondialdehyde (MDA) and tyrosinase, but higher superoxide dismutase (SOD), total antioxidant capacity (T-AOC), and glutathione peroxidase (GSH-Px). The UV+moderate dose group showed significant improvement of MDA and GSH-Px, and the UV+low dose group only showed improvement of GSH-Px. Histological photoaging manifestations were attenuated in the UV+high and moderate dose groups. CONCLUSIONS The multi-plant extracts product improved skin photoaging possibly via antioxidant and anti-tyrosinase ways.
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Affiliation(s)
- Yang Xie
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Guoxing Zhu
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jinling Yi
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yanying Ji
- Department of Pathology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yue Xia
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yue Zheng
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Congxiu Ye
- Department of Dermato-Venereology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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11
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Aryunisari CG, Putra IB, Jusuf NK. Effect of Purple Passion Fruit Extract Cream (Passiflora edulis Sims var. Edulis) 6% against Striae Distensae. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
ABSTRACT
Background: Striae distensae is a skin disorder that causes cosmetic and psychological problems. Purple passion fruit (Passiflora edulis Sims var. Edulis) is widely cultivated, especially in North Sumatra. The seeds are abundant and unused industrial waste. Purple passion fruit seeds contain piceatannol, ascorbic acid, flavonoids, resveratrol, hydroalcohols and sterols which play a role in the repair of striae distensae through anti-inflammatory mechanisms, increase fibroblast proliferation and collagen production, increase crosslinking between collagen fibers and moisturizers.
Objective: To determine the effect of 6% purple passion fruit (Passiflora edulis Sims var. Edulis) seed extract cream on striae distensae.
Subjects and Methods: This study is a pre-experimental clinical trial with a pretest-posttest research design on 40 subjects with striae distensae. Diagnosis was confirmed by history and clinical evaluation using the Manchester scar scale before and after administration of 6% purple passion fruit extract cream at weeks 0, 2, 4, 6, 8. Adverse effects were recorded during the study and satisfaction levels were assessed at the end.
Results: The majority of subjects' ages ranged from 29 to 39 years (72.5%). There was a significant reduction in Manchester scar scale in striae distensae, both after being given a 6% purple passion fruit extract cream or a combination of 1% tretinoin cream for 8 weeks, with a mean reduction of 25% (p = 0.000). Striae distensae after being given 6% purple passion fruit extract cream compared to 6% purple passion fruit extract cream combined with 1% tretinoin cream, there was no significant difference (p = 0.791). From a total of 40 subjects, none experienced side effects (0%). As many as 57.5% of the subjects showed a good level of satisfaction.
Conclusion: The use of 6% purple passion fruit seed extract cream can improve the appearance of striae distensae without side effects and the level of satisfaction is good.
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Boosting the Photoaged Skin: The Potential Role of Dietary Components. Nutrients 2021; 13:nu13051691. [PMID: 34065733 PMCID: PMC8156873 DOI: 10.3390/nu13051691] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/11/2022] Open
Abstract
Skin photoaging is mainly induced by ultraviolet (UV) irradiation and its manifestations include dry skin, coarse wrinkle, irregular pigmentation, and loss of skin elasticity. Dietary supplementation of nutraceuticals with therapeutic and preventive effects against skin photoaging has recently received increasing attention. This article aims to review the research progress in the cellular and molecular mechanisms of UV-induced skin photoaging. Subsequently, the beneficial effects of dietary components on skin photoaging are discussed. The photoaging process and the underlying mechanisms are complex. Matrix metalloproteinases, transforming growth factors, skin adipose tissue, inflammation, oxidative stress, nuclear and mitochondrial DNA, telomeres, microRNA, advanced glycation end products, the hypothalamic-pituitary-adrenal axis, and transient receptor potential cation channel V are key regulators that drive the photoaging-associated changes in skin. Meanwhile, mounting evidence from animal models and clinical trials suggests that various food-derived components attenuate the development and symptoms of skin photoaging. The major mechanisms of these dietary components to alleviate skin photoaging include the maintenance of skin moisture and extracellular matrix content, regulation of specific signaling pathways involved in the synthesis and degradation of the extracellular matrix, and antioxidant capacity. Taken together, the ingestion of food-derived functional components could be an attractive strategy to prevent skin photoaging damage.
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Rathner A, Rathner P, Friedrich A, Wießner M, Kitzler CM, Schernthaner J, Karl T, Krauß J, Lottspeich F, Mewes W, Hintner H, Bauer JW, Breitenbach M, Müller N, Breitenbach-Koller H, von Hagen J. Drug Development for Target Ribosomal Protein rpL35/uL29 for Repair of LAMB3R635X in Rare Skin Disease Epidermolysis Bullosa. Skin Pharmacol Physiol 2021; 34:167-182. [PMID: 33823521 DOI: 10.1159/000513260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/22/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Epidermolysis bullosa (EB) describes a family of rare genetic blistering skin disorders. Various subtypes are clinically and genetically heterogeneous, and a lethal postpartum form of EB is the generalized severe junctional EB (gs-JEB). gs-JEB is mainly caused by premature termination codon (PTC) mutations in the skin anchor protein LAMB3 (laminin subunit beta-3) gene. The ribosome in majority of translational reads of LAMB3PTC mRNA aborts protein synthesis at the PTC signal, with production of a truncated, nonfunctional protein. This leaves an endogenous readthrough mechanism needed for production of functional full-length Lamb3 protein albeit at insufficient levels. Here, we report on the development of drugs targeting ribosomal protein L35 (rpL35), a ribosomal modifier for customized increase in production of full-length Lamb3 protein from a LAMB3PTC mRNA. METHODS Molecular docking studies were employed to identify small molecules binding to human rpL35. Molecular determinants of small molecule binding to rpL35 were further characterized by titration of the protein with these ligands as monitored by nuclear magnetic resonance (NMR) spectroscopy in solution. Changes in NMR chemical shifts were used to map the docking sites for small molecules onto the 3D structure of the rpL35. RESULTS Molecular docking studies identified 2 FDA-approved drugs, atazanavir and artesunate, as candidate small-molecule binders of rpL35. Molecular interaction studies predicted several binding clusters for both compounds scattered throughout the rpL35 structure. NMR titration studies identified the amino acids participating in the ligand interaction. Combining docking predictions for atazanavir and artesunate with rpL35 and NMR analysis of rpL35 ligand interaction, one binding cluster located near the N-terminus of rpL35 was identified. In this region, the nonidentical binding sites for atazanavir and artesunate overlap and are accessible when rpL35 is integrated in its natural ribosomal environment. CONCLUSION Atazanavir and artesunate were identified as candidate compounds binding to ribosomal protein rpL35 and may now be tested for their potential to trigger a rpL35 ribosomal switch to increase production of full-length Lamb3 protein from a LAMB3PTC mRNA for targeted systemic therapy in treating gs-JEB.
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Affiliation(s)
- Adriana Rathner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Petr Rathner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Institute of Inorganic Chemistry, Johannes Kepler University, Linz, Austria
| | - Andreas Friedrich
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Michael Wießner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | | | - Jan Schernthaner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Thomas Karl
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Jan Krauß
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Werner Mewes
- TUM School of Life Sciences, Technical University of Munich, Munich, Germany
| | - Helmut Hintner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | - Johann W Bauer
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | | | - Norbert Müller
- Institute of Inorganic Chemistry, Johannes Kepler University, Linz, Austria
- Institute of Organic Chemistry, Johannes Kepler University, Linz, Austria
- Faculty of Natural Sciences, University of South Bohemia, Ceske Budejovice, Czechia
| | | | - Jörg von Hagen
- Department of Life Science Engineering, Technische Hochschule Mittelhessen, Gießen, Germany
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Gok Metin Z, Helvaci A, Gulbahar Eren M. Effects of Aloe vera in adults with mucocutaneous problems: A systematic review and meta-analysis. J Adv Nurs 2020; 77:1105-1126. [PMID: 33336470 DOI: 10.1111/jan.14653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 09/23/2020] [Accepted: 10/27/2020] [Indexed: 11/30/2022]
Abstract
AIMS To analyse the different types of Aloe vera (AV) effects on various mucocutaneous problems among adults. DESIGN A systematic review and meta-analysis. DATA SOURCES An exhaustive scanning of PubMed, Medline, ScienceDirect, and Google Scholar databases was conducted from January 2000-December 2019. REVIEW METHODS Randomized controlled trials (RCTs) publishing reports on the effects of AV in various mucocutaneous problems, psoriasis, burn, wound-healing were included. The standardized mean differences (SMD) with 95% confidence Intervals (CIs) were determined for the main outcomes, heterogeneity was analysed using the I2 test and the risk of bias in the studies was reviewed by the Cochrane risk of bias assessment tool. RESULTS The study included 23 trials with a total of 4,023 participants. Six trials were included in the meta-analysis. The results indicated no significant differences in pain scores as assessed by the Visual Analog Scale (VAS) (SMD = 0.11, 95% CI: -0.37 to 0.59). The Psoriasis Area Severity Index (PASI) scores were significantly lower following AV gel application in two of the studies (SMD = -1.32 95% CI: -1.86 to -0.78). Considering results in a systematic manner, AV accelerated tissue epithelialization and wound-healing process (N = 3), reduced oral mucositis (N = 3), and improved quality of life (N = 1). CONCLUSION AV might have beneficial effects in reducing pain scores and the severity of mucocutaneous problems compared with placebo, especially with limited mild to moderate adverse effects. IMPACT AV may be used as an alternative and integrative approach to reducing symptom severity in mucocutaneous problems and the wound-healing process. High quality and well-designed RCTs are still needed to elucidate the effects of AV in a variety of dosages and forms among adults with mucocutaneous problems.
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Affiliation(s)
- Zehra Gok Metin
- Internal Medicine Nursing Department, Faculty of Nursing, Hacettepe University, Ankara, Turkey
| | - Aylin Helvaci
- Internal Medicine Nursing Department, Faculty of Nursing, Hacettepe University, Ankara, Turkey
| | - Merve Gulbahar Eren
- Internal Medicine Nursing Department, Faculty of Nursing, Hacettepe University, Ankara, Turkey
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15
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Evans M, Lewis ED, Zakaria N, Pelipyagina T, Guthrie N. A randomized, triple-blind, placebo-controlled, parallel study to evaluate the efficacy of a freshwater marine collagen on skin wrinkles and elasticity. J Cosmet Dermatol 2020; 20:825-834. [PMID: 32799362 PMCID: PMC8176521 DOI: 10.1111/jocd.13676] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 07/28/2020] [Indexed: 01/01/2023]
Abstract
Background Collagen is the primary component in human skin. With age, there is loss of skin elasticity and collagen, resulting in wrinkle formation and reduction in skin appearance. Aims The objective of this randomized, triple‐blind, placebo‐controlled study was to evaluate the safety and efficacy of a hydrolyzed marine collagen (Vinh Wellness Collagen, VWC) on aspects of skin health and quality in women between 45 and 60 years of age. Patients/Methods Assessments of skin wrinkles, elasticity, and self‐reported appearance were conducted using the VISIA skin analysis system, Cutometer®, and Skin Quality Visual Analogue Scale. Outcomes were assessed at weeks 0 (baseline), 6, and 12. Results After 12 weeks, participants supplemented with VWC had a significant 35% reduction in wrinkle score (P = .035) from baseline. Participants in the VWC group showed a 24% greater reduction in wrinkles on the right side of the face than those on placebo. A planned subgroup analysis based on age showed women 45‐54 years had a significant 20% and 10% improvement in cheek skin elasticity from baseline to week 6 (P = .016) and 12 (P = .022), respectively. At week 12, participants in the VWC group reported greater percentage improvements in overall skin score (9%) and wrinkle (15%), elasticity (23%), hydration (14%), radiance (22%), and firmness (25%) scores vs placebo. Conclusion Supplementation with VWC was found to be safe and well‐tolerated. The results of this study support the use of fish‐derived hydrolyzed collagen for the improvement of skin health in an aging population.
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16
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Kaminaka C, Yamamoto Y, Sakata M, Hamamoto C, Misawa E, Nabeshima K, Saito M, Tanaka M, Abe F, Jinnin M. Effects of low-dose Aloe sterol supplementation on skin moisture, collagen score and objective or subjective symptoms: 12-week, double-blind, randomized controlled trial. J Dermatol 2020; 47:998-1006. [PMID: 32515040 PMCID: PMC7496846 DOI: 10.1111/1346-8138.15428] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/05/2020] [Indexed: 12/16/2022]
Abstract
Daily oral intake of 40 μg Aloe sterol was shown in a double‐blind clinical trial to significantly increase skin barrier function, moisture and elasticity. Ultrasonographic results also suggested that the intake of Aloe sterol increases collagen content in the dermis. Here, we evaluate the effects of a much smaller dose of Aloe sterol, approximately half that used previously, on skin functions in more detail. This is a monocentric, double‐blind, randomized, placebo‐controlled, supplementation study of the effects of low‐dose Aloe sterol on skin transepidermal water loss, hydration, collagen score, evaluation of objective or subjective symptoms, and safety after 12 weeks of daily intake. We randomly administrated either Aloe sterol or placebo to 122 healthy volunteers. Transepidermal water loss was significantly reduced and collagen score was increased in the Aloe sterol group compared with the placebo group at week 12. In the Aloe sterol group, there was significant improvement of objective skin condition (face erythema and pruritus of inner and outer arms) at week 12 compared with week 0, but not in the placebo group. Subjectively, there was significant improvement of visual analog scale of skin acne, fingernail brittleness and constipation in the Aloe sterol group. According to subgroup analysis, although not planned before the study initiation, subjects with dry skin in the Aloe sterol group had significantly increased skin hydration values at week 12 compared with the placebo group. Our results confirmed that even low‐dose Aloe sterol ingestion improves skin moisture by promoting skin barrier function and dermal collagen production, which contributes to maintenance of healthy skin.
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Affiliation(s)
- Chikako Kaminaka
- Department of Dermatology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - Yuki Yamamoto
- Department of Dermatology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - Mariko Sakata
- Department of Dermatology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - Chiaki Hamamoto
- Department of Dermatology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - Eriko Misawa
- Functional Food Ingredients Department, Food Ingredients and Technology Institute, Morinaga Milk Industry Co., Ltd, Zama, Japan
| | - Kazumi Nabeshima
- Functional Food Ingredients Department, Food Ingredients and Technology Institute, Morinaga Milk Industry Co., Ltd, Zama, Japan
| | - Marie Saito
- Functional Food Ingredients Department, Food Ingredients and Technology Institute, Morinaga Milk Industry Co., Ltd, Zama, Japan
| | - Miyuki Tanaka
- Functional Food Ingredients Department, Food Ingredients and Technology Institute, Morinaga Milk Industry Co., Ltd, Zama, Japan
| | - Fumiaki Abe
- Functional Food Ingredients Department, Food Ingredients and Technology Institute, Morinaga Milk Industry Co., Ltd, Zama, Japan
| | - Masatoshi Jinnin
- Department of Dermatology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
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Oral Intake of Hydrangea serrata (Thunb.) Ser. Leaves Extract Improves Wrinkles, Hydration, Elasticity, Texture, and Roughness in Human Skin: A Randomized, Double-Blind, Placebo-Controlled Study. Nutrients 2020; 12:nu12061588. [PMID: 32481760 PMCID: PMC7352416 DOI: 10.3390/nu12061588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/22/2020] [Accepted: 05/26/2020] [Indexed: 12/19/2022] Open
Abstract
Previously, we reported that the hot water extract of Hydrangea serrata leaves (WHS) and its active component, hydrangenol, possess in vitro and in vivo effects on skin wrinkles and moisturization. We conducted a randomized, double-blind, placebo-controlled trial to clinically evaluate the effect of WHS on human skin. Participants (n = 151) were randomly assigned to receive either WHS 300 mg, WHS 600 mg, or placebo, once daily for 12 weeks. Skin wrinkle, hydration, elasticity, texture, and roughness parameters were assessed at baseline and after 4, 8, and 12 weeks. Compared to the placebo, skin wrinkles were significantly reduced in both WHS groups after 8 and 12 weeks. In both WHS groups, five parameters (R1-R5) of skin wrinkles significantly improved and skin hydration was significantly enhanced when compared to the placebo group after 12 weeks. Compared with the placebo, three parameters of skin elasticity, including overall elasticity (R2), net elasticity (R5), and ratio of elastic recovery to total deformation (R7), improved after 12 weeks of oral WHS (600 mg) administration. Changes in skin texture and roughness were significantly reduced in both WHS groups. No WHS-related adverse reactions were reported. Hence, WHS could be used as a health supplement for skin anti-aging.
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18
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Sánchez M, González-Burgos E, Iglesias I, Gómez-Serranillos MP. Pharmacological Update Properties of Aloe Vera and its Major Active Constituents. Molecules 2020; 25:molecules25061324. [PMID: 32183224 PMCID: PMC7144722 DOI: 10.3390/molecules25061324] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 01/23/2023] Open
Abstract
Aloe vera has been traditionally used to treat skin injuries (burns, cuts, insect bites, and eczemas) and digestive problems because its anti-inflammatory, antimicrobial, and wound healing properties. Research on this medicinal plant has been aimed at validating traditional uses and deepening the mechanism of action, identifying the compounds responsible for these activities. The most investigated active compounds are aloe-emodin, aloin, aloesin, emodin, and acemannan. Likewise, new actions have been investigated for Aloe vera and its active compounds. This review provides an overview of current pharmacological studies (in vitro, in vivo, and clinical trials), written in English during the last six years (2014–2019). In particular, new pharmacological data research has shown that most studies refer to anti-cancer action, skin and digestive protective activity, and antimicrobial properties. Most recent works are in vitro and in vivo. Clinical trials have been conducted just with Aloe vera, but not with isolated compounds; therefore, it would be interesting to study the clinical effect of relevant metabolites in different human conditions and pathologies. The promising results of these studies in basic research encourage a greater number of clinical trials to test the clinical application of Aloe vera and its main compounds, particularly on bone protection, cancer, and diabetes.
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19
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Monteiro Rodrigues L, Fluhr JW. EEMCO Guidance for the in vivo Assessment of Biomechanical Properties of the Human Skin and Its Annexes: Revisiting Instrumentation and Test Modes. Skin Pharmacol Physiol 2019; 33:44-60. [PMID: 31747675 DOI: 10.1159/000504063] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/10/2019] [Indexed: 11/19/2022]
Abstract
Biomechanics of the skin is an important subject in skin research. It has been studied for many decades involving various technologies and methods to characterize and quantify mechanical properties of the skin under different in vivo conditions. The present EEMCO paper reviews the current rel-evant information, providing practical orientation to researchers dedicated to in vivo assessment of biomechanics of skin and its annexes. We discuss the available non-invasive instruments, including their principles and variables. A correspondence between the descriptors nomenclature proposed by Agache and the designation for the suction-based standard instruments is proposed. The addressed properties include skin softness/stiffness, firmness, elasticity, elastic and viscoelastic properties, extensibility, resilience, anisotropy, acoustical shock wave hardness, friction (in relation to topographic properties), thickness, fiber/stress mechanics (bending, cyclic, tensile, fatigue, or torsion), and hardness. We provide the relation of these properties to biomechanical descriptors and in some cases to SI units. Practical guidance for the proper use of these instruments, limitations, and possible interpretations are provided, while discussing the meaning of descriptive or "phenomenological" variables. For studies intended to quantify the effect of an intervention with regard to mechanical properties, we recommend a minimum of 30-40 participants, based on normal distribution of the data sets. Some important limitations are recognized, including the lack of standardization of procedures and calibration of instruments, which compromises the relevance and real nature of the descriptors/parameters obtained with these devices. The present work highlights an approach to a better practice and a science-supported biomechanical assessment of human skin, hair, and nails.
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Affiliation(s)
- Luis Monteiro Rodrigues
- CBIOS - Universidade Lusófona Research Centre for Biosciences and Health Technologies, Lisbon, Portugal
| | - Joachim W Fluhr
- Department of Dermatology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany,
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20
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Dini I, Laneri S. Nutricosmetics: A brief overview. Phytother Res 2019; 33:3054-3063. [PMID: 31478301 DOI: 10.1002/ptr.6494] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 11/08/2022]
Abstract
The nutricosmetics are products and ingredients that act as nutritional supplements to care skin, nails, and hair natural beauty. They work from the inside to promote beauty from within. Nutricosmetic is the latest trend in the beauty industry. This tendency rapidly gained many followers because it fits with the modern culture: Today, consumers are very careful with the food that they introduce into their body, and there is also an increasing demand for natural products able to enhance one's health and beauty without side effects and significant traction before use. However, many nutricosmetic products are considered effective due to the historical use and word of mouth. Comprehensive analysis of the global nutricosmetics market is conducted considering form, end-user applications, and some product components such as collagen, peptides, proteins, vitamins, carotenes, minerals, and omega-3 fatty acid are reported. Plant extract ingredients used in nutricosmetic are also described.
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Affiliation(s)
- Irene Dini
- Department of Pharmacy, University of Naples Federico II, Naples, 80131, Italy
| | - Sonia Laneri
- Department of Pharmacy, University of Naples Federico II, Naples, 80131, Italy
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22
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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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23
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Affiliation(s)
- Yan Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Kit Ieng Kuok
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Ying Jin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
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24
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Pérez-Sánchez A, Barrajón-Catalán E, Herranz-López M, Micol V. Nutraceuticals for Skin Care: A Comprehensive Review of Human Clinical Studies. Nutrients 2018; 10:nu10040403. [PMID: 29587342 PMCID: PMC5946188 DOI: 10.3390/nu10040403] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 12/18/2022] Open
Abstract
The skin is the body’s largest organ, it participates in sensitivity and offers protection against microorganisms, chemicals and ultraviolet (UV) radiation. Consequently, the skin may suffer alterations such as photo-ageing, immune dysfunction and inflammation which may significantly affect human health. Nutraceuticals represent a promising strategy for preventing, delaying, or minimising premature ageing of the skin and also to alleviate certain skin disorders. Among them, bioactive peptides and oligosaccharides, plant polyphenols, carotenoids, vitamins and polyunsaturated fatty acids are the most widely used ingredients. Supplementation with these products has shown evidence of having an effect on the signs of ageing and protection against UV radiation ageing in several human trials. In this review, the most relevant human studies on skin nutraceuticals are evaluated and the statistical resolution, biological relevance of their results, and, the trial protocols are discussed. In conclusion, quality and rigorousness of the trials must be improved to build credible scientific evidence for skin nutraceuticals and to establish a cause-effect relationship between the ingredients the beneficial effects for the skin.
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Affiliation(s)
- Almudena Pérez-Sánchez
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández (UMH), Edificio Torregaitán, 03202 Elche, Spain.
| | - Enrique Barrajón-Catalán
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández (UMH), Edificio Torregaitán, 03202 Elche, Spain.
- Ilice Effitech, UMH Scientific Park, 03202 Elche, Spain.
| | - María Herranz-López
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández (UMH), Edificio Torregaitán, 03202 Elche, Spain.
- Ilice Effitech, UMH Scientific Park, 03202 Elche, Spain.
| | - Vicente Micol
- Instituto de Biología Molecular y Celular (IBMC), Universidad Miguel Hernández (UMH), Edificio Torregaitán, 03202 Elche, Spain.
- Ilice Effitech, UMH Scientific Park, 03202 Elche, Spain.
- CIBER: CB12/03/30038, Fisiopatología de la Obesidad y la Nutrición, CIBERobn, Instituto de Salud Carlos III (ISCIII), 07122 Palma Sola, Spain.
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Abstract
Skin aging is continuously influenced by various internal and external factors such as the biologic progression of cells, ultraviolet (UV) radiation, tobacco, nutritional deficiencies, and hormonal imbalances that lead to the degradation of skin cells. Through the degradation of skin cells, free radicals and inflammation weaken repair mechanisms and result in collagen and elastic fiber breakdown. The appearance of aging skin is highlighted by skin roughness, wrinkling, pigmentation change, telangiectasias, loss of elasticity, and decreased firmness, all of which are accelerated by these internal and external factors. Throughout the years, nutraceuticals have been studied to delay and fight against these internal and external factors, many of which are found in foods and byproducts consumed naturally. The aim of this review is to aid dermatologists in understanding the mechanism of action of popular nutraceuticals and their possible efficacy in antiaging and skin health.
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Affiliation(s)
- Skylar A Souyoul
- Lupo Center for Aesthetic and General Dermatology, New Orleans, LA, USA.
| | - Katharine P Saussy
- Department of Internal Medicine, Tulane University, New Orleans, LA, USA
| | - Mary P Lupo
- Lupo Center for Aesthetic and General Dermatology, New Orleans, LA, USA
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Tanaka M, Yamamoto Y, Misawa E, Nabeshima K, Saito M, Yamauchi K, Abe F, Furukawa F. Aloe sterol supplementation improves skin elasticity in Japanese men with sunlight-exposed skin: a 12-week double-blind, randomized controlled trial. Clin Cosmet Investig Dermatol 2016; 9:435-442. [PMID: 27877061 PMCID: PMC5108477 DOI: 10.2147/ccid.s118947] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background/objective Recently, it was confirmed that the daily oral intake of plant sterols of Aloe vera gel (Aloe sterol) significantly increases the skin barrier function, moisture, and elasticity in photoprotected skin. This study aimed to investigate whether Aloe sterol intake affected skin conditions following sunlight exposure in Japanese men. Methods We performed a 12-week, randomized, double-blind, placebo-controlled study to evaluate the effects of oral Aloe sterol supplementation on skin conditions in 48 apparently healthy men (age range: 30–59 years; average: 45 years). The subjects were instructed to expose the measurement position of the arms to the sunlight outdoors every day for 12 weeks. The skin parameters were measured at 0 (baseline), 4, 8, and 12 weeks. Results Depending on the time for the revelation of the sunlight, the b* value and melanin index increased and the skin moisture decreased. After taking an Aloe sterol tablet daily for 12 weeks, the skin elasticity index (R2, R5, and R7) levels were significantly higher than the baseline value. There were no differences between the groups in these skin elasticity values. In the subgroup analysis of subjects aged <46 years, the change in the R5 and R7 was significantly higher in the Aloe group than in the placebo group at 8 weeks (P=0.0412 and P=0.0410, respectively). There was a difference in the quantity of sun exposure between each subject, and an additional clinical study that standardizes the amount of ultraviolet rays is warranted. No Aloe sterol intake-dependent harmful phenomenon was observed during the intake period. Conclusion Aloe sterol ingestion increased skin elasticity in the photodamaged skin of men aged <46 years.
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Affiliation(s)
- Miyuki Tanaka
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Yuki Yamamoto
- Department of Dermatology, Wakayama Medical University, Kimiidera, Wakayama, Japan
| | - Eriko Misawa
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Kazumi Nabeshima
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Marie Saito
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Koji Yamauchi
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Fumiaki Abe
- Functional Food Ingredients Department, Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa
| | - Fukumi Furukawa
- Department of Dermatology, Wakayama Medical University, Kimiidera, Wakayama, Japan
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