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Das A, Sil A, Kumar P, Khan I. Blue light and skin: what is the intriguing link? Clin Exp Dermatol 2023; 48:968-977. [PMID: 37097168 DOI: 10.1093/ced/llad150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/20/2023] [Indexed: 04/26/2023]
Abstract
Blue light has garnered attention because of its ability to penetrate more deeply into the skin layers, and induce cellular dysfunction and DNA damage. Photoageing, hyperpigmentation and melasma are some of the cutaneous changes that develop on exposure to blue light. To date, the therapeutic roles of blue light have been evaluated in dermatological conditions like psoriasis, eczema, acne vulgaris, actinic keratosis and cutaneous malignancies, among others. In this review, we have attempted to present an evidence-based compilation of the effects of blue light on the skin.
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Affiliation(s)
- Anupam Das
- Department of Dermatology, KPC Medical College and Hospital, Kolkata, West Bengal, India
| | - Abheek Sil
- Department of Dermatology, Venereology and Leprosy, R.G. Kar Medical College and Hospital, Kolkata, West Bengal, India
| | - Piyush Kumar
- Department of Dermatology, Madhubani Medical College & Hospital, Madhubani, Bihar, India
| | - Ismat Khan
- Department of Dermatology, Medical College and Hospital Kolkata, Kolkata, West Bengal, India
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Hiramoto K, Kubo S, Tsuji K, Sugiyama D, Hamano H. Induction of Skin Cancer by Long-Term Blue Light Irradiation. Biomedicines 2023; 11:2321. [PMID: 37626816 PMCID: PMC10452187 DOI: 10.3390/biomedicines11082321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/19/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Presently, people are not only exposed to sunlight but also to a large amount of blue light from personal computers and smartphones. This blue light has various effects on the living body. However, its effect on the induction of skin cancer is unknown. In this study, we investigated the induction of skin cancer by long-term blue light irradiation. Hairless mice were irradiated with blue light (LED; peak emission 479 nm) every day for one year, and a control was irradiated with white light (LED), green light (LED; peak emission 538 nm), and red light (LED; peak emission 629 nm) for one year, respectively. Skin cancer was induced only in the mice exposed to blue light. Long-term blue light irradiation also increased the migration of neutrophils and macrophages involved in carcinogenesis in the skin. In neutrophils, an increased expression of citH3 and PAD4 was observed, suggesting the possibility of NETosis. Conversely, in macrophages, inflammatory macrophages (type 1 macrophages) increased and anti-inflammatory macrophages (type 2 macrophages) decreased due to continuous blue light irradiation. These findings suggest that long-term continuous irradiation with blue light induces neutrophil NETosis and an increase in type 1 macrophages, resulting in skin cancer.
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Affiliation(s)
- Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Sayaka Kubo
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Keiko Tsuji
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Daijiro Sugiyama
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
| | - Hideo Hamano
- Research Department, Daiichi Sankyo Healthcare Co., Ltd., Chuo-ku, Tokyo 140-8170, Japan; (S.K.); (K.T.); (D.S.); (H.H.)
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Li Z, Li B, Chen Z, Xu J, El Sabbagh A, Zhao Y, Du R, Rong L, Tian J, Cui Q. Licochalcone A plays dual antiviral roles by inhibiting RSV and protecting against host damage. J Med Virol 2023; 95:e29059. [PMID: 37635463 DOI: 10.1002/jmv.29059] [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: 07/20/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/29/2023]
Abstract
Respiratory syncytial virus (RSV) causes lower respiratory tract diseases and bronchiolitis in children and elderly individuals. There are no effective drugs currently available to treat RSV infection. In this study, we report that Licochalcone A (LCA) can inhibit RSV replication and mitigate RSV-induced cell damage in vitro, and that LCA exerts a protective effect by reducing the viral titer and inflammation in the lungs of infected mice in vivo. We suggest that the mechanism of action occurs through pathways of antioxidant stress and inflammation. Further mechanistic results demonstrate that LCA can induce nuclear factor erythroid 2-related factor 2 (Nrf2) translocation into the nucleus, activate heme oxygenase 1 (HO-1), and inhibit reactive oxygen species-induced oxidative stress. LCA also works to reverse the decrease in I-kappa-B-alpha (IкBα) levels caused by RSV, which in turn inhibits inflammation through the associated nuclear factor kappa B and tumor necrosis factor-α signaling pathways. The combined action of the two cross-talking pathways protects hosts from RSV-induced damage. To conclude, our study is the first of its kind to establish evidence of LCA as a viable treatment for RSV infection.
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Affiliation(s)
- Zhongyuan Li
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Baohong Li
- Innovative Institute of Chinse Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zinuo Chen
- Innovative Institute of Chinse Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jinke Xu
- Shandong Center for Disease Control and Prevention, Jinan, China
| | - Asma El Sabbagh
- Department of Microbiology and Immunology, College of Medicine, University of Illinois Chicago, Chicago, Illinois, USA
| | - Yangang Zhao
- Qingdao Academy of Chinese Medicinal Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, China
| | - Ruikun Du
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Innovative Institute of Chinse Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Qingdao Academy of Chinese Medicinal Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, China
| | - Lijun Rong
- Department of Microbiology and Immunology, College of Medicine, University of Illinois Chicago, Chicago, Illinois, USA
| | - Jingzhen Tian
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Qingdao Academy of Chinese Medicinal Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, China
| | - Qinghua Cui
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Innovative Institute of Chinse Medicine and Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
- Qingdao Academy of Chinese Medicinal Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, China
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Li L, Jiang X, Tu Y, Yang Y, Zhang X, Gu H, He L. Impact of blue light on skin pigmentation in patients with melasma. Skin Res Technol 2023; 29:e13401. [PMID: 37522494 PMCID: PMC10315449 DOI: 10.1111/srt.13401] [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: 03/09/2023] [Accepted: 06/19/2023] [Indexed: 08/01/2023]
Abstract
BACKGROUND The difference in skin pigmentation induced by blue light between melasma patients and healthy people has not been reported. This study aimed to explore the impact of different doses of blue light irradiation on the pigmentation of the skin of non-exposed areas in female melasma patients with III-IV-type skin and healthy women. MATERIALS AND METHODS This observational study enrolled patients with melasma and healthy people at the First Affiliated Hospital of Kunming Medical University between January and April 2021. The outcomes were the degree of pigmentation, ΔL*, and ΔITA* values. RESULTS Forty-two (21/group) participants were enrolled. After irradiation with different doses of blue light, different degrees of pigmentation could be observed in the irradiated area of the skin of female melasma patients and healthy women. The △L* and △ITA* values in the irradiated area of the skin of healthy women were higher than in female melasma patients after blue light irradiation at 20 J/cm2 (p < 0.05). There were no significant differences in the pigmentation scores, △L* values, and △ITA* values in the irradiated areas of skin at different time points after irradiation with the other doses of blue light (p > 0.05). CONCLUSION Blue light at 20 J/cm2 induced a smaller change in pigmentation in melasma patients than in healthy women, but the effect of blue light at 40-80 J/cm2 was similar.
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Affiliation(s)
- Lingjia Li
- Department of DermatologyJiangnan University Medical Center, Jiangnan UniversityJiangsuChina
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Xin Jiang
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Yin Tu
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Yaqi Yang
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Xin Zhang
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Hua Gu
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
| | - Li He
- Department of DermatologyThe First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityYunnanChina
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Kim S, Rainer BM, Qi J, Brown I, Ogurtsova A, Leung S, Garza LA, Kang S, Chien AL. Clinical and molecular change induced by repeated low-dose visible light exposure in both light-skinned and dark-skinned individuals. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2023; 39:204-212. [PMID: 35861041 PMCID: PMC9859939 DOI: 10.1111/phpp.12819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/01/2022] [Accepted: 07/16/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Visible light (VL) is known to induce pigmentation in dark-skinned individuals and immediate erythema in light-skinned individuals. However, the effects of accumulated low-dose VL exposure across skin types are not well established. METHODS Thirty-one healthy subjects with light (Fitzpatrick skin types [FST] I-II, n = 13) and dark (FST V-VI, n = 18) skin types were enrolled. Subjects' buttocks were exposed daily to VL, wavelength 400-700 nm, with a dose of 120 J/cm2 at 50 mW/cm2 , for four consecutive days. Microarray using Affymetrix GeneChip (49,395 genes) was performed followed by qRT-PCR on skin samples. RESULTS Repeated low-dose VL irradiation induced immediate pigment darkening and delayed tanning in dark-skinned individuals while no discernable pigmentation and erythema were observed in light-skinned individuals. Top ten upregulated genes by repeated VL exposure in microarray included melanogenic genes such as tyrosinase (TYR), tyrosinase-related protein-1 (TYRP1), dopachrome tautomerase (DCT), premelanosome protein (PMEL), melan-A (MLANA), and solute carrier family 24, member 5 (SLC24A5) and genes involved in inflammation/matrix remodeling/cell signaling including chemokine (C-C motif) ligand 18 (CCL18), BCL2-related protein A1 (BCL2A1), and cartilage oligomeric matrix protein (COMP). In qRT-PCR CCL18 was upregulated in light skin with a greater extent (mean fold change ± SD; 4.03 ± 3.28, p = .04) than in dark-skinned individuals (1.91 ± 1.32, p = .07) while TYR was not significantly upregulated in both skin types. CONCLUSION This study highlights the genes upregulated by cumulative VL exposure involved in pigmentation, immune response, oxidation/reduction, and matrix remodeling across skin types providing relevant information on daily solar exposure.
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Affiliation(s)
- Sooyoung Kim
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
- Department of Dermatology, Soonchunhyang University Seoul Hospital, Seoul, South Korea
| | - Barbara M. Rainer
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
- Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Ji Qi
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Isabelle Brown
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Aleksandra Ogurtsova
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Sherry Leung
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Luis A. Garza
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Sewon Kang
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Anna L. Chien
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland, United States
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Effects and Mechanism of the Leontopodium alpinum Callus Culture Extract on Blue Light Damage in Human Foreskin Fibroblasts. Molecules 2023; 28:molecules28052172. [PMID: 36903418 PMCID: PMC10004670 DOI: 10.3390/molecules28052172] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/18/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
Leontopodium alpinum is an important source of raw material for food, medicine, and modern cosmetics. The purpose of this study was to develop a new application for protection against blue light damage. To investigate the effects and mechanism of action of Leontopodium alpinum callus culture extract (LACCE) on blue light damage, a blue-light-induced human foreskin fibroblast damage model was established. The contents of collagen (COL-I), matrix metalloproteinase 1 (MMP-1), and opsin 3 (OPN3) were detected using enzyme-linked immunosorbent assays and Western blotting. The calcium influx and reactive oxygen species (ROS) levels were measured via flow cytometry and the results showed that the LACCE (10-15 mg/mL) promoted the production of COL-I, inhibited the secretion of MMP-1, OPN3, ROS and calcium influx, and may play a role in inhibiting the activation of blue light on the OPN3-calcium pathway. Thereafter, high-performance liquid chromatography and ultra-performance liquid chromatography-tandem mass spectrometry were used to quantitatively analyze the contents of nine active ingredients in the LACCE. The results indicated that LACCE has an anti-blue-light-damage effect and provides theoretical support for the development of new raw materials in the natural food, medicine, and skin care industries.
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Morgado‐Carrasco D, Piquero‐Casals J, Granger C, Trullàs C, Passeron T. Melasma: The need for tailored photoprotection to improve clinical outcomes. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2022; 38:515-521. [PMID: 35229368 PMCID: PMC9790748 DOI: 10.1111/phpp.12783] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 02/24/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND/PURPOSE Melasma is a frequent photoexacerbated hyperpigmentary disorder, which can significantly impact on the quality of life. We sought to review the pathogenesis of melasma, and the role of photoprotection in the prevention and treatment of this disorder. METHODS We conducted a narrative review of the literature. We performed literature searches with PubMed from January 1990 to December 2021 using the keywords "melasma," "pathogenesis," "ultraviolet radiation," "visible light," "photoprotection," and "sunscreens." RESULTS The physiopathology of melasma includes a complex interaction between genetics, sex hormones, and sun exposure. Visible light, in particular high-energy visible light (HEVL), and long-wave UVA (UVA1) play a key role in melasma pathophysiology, and recent research suggests that melasma shares many features with photoaging disorders. Melasma disproportionately affects dark-skinned individuals. Some 30% to 50% of South Americans and Asians, among other ethnicities, can present with melasma. Dark-skinned patients take fewer photoprotective measures. Also, the majority of melasma patients do not adequately follow photoprotection recommendations, including the application of sunscreen. Intensive use of a broad-spectrum sunscreen can prevent melasma in high-risk individuals, can lessen melasma severity (associated or not with depigmenting agents), and can reduce relapses. CONCLUSIONS Due to the physiopathology of melasma, sunscreens should be broad-spectrum with high sun protection factor, and provide high protection against UVA1 and VL. Sunscreens should be cosmetically acceptable and leave no white residue. Tinted sunscreens are an excellent choice, as pigments can protect from HEVL and UVA1, and may provide camouflage, but they must offer colors that match the skin tone of each patient.
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Affiliation(s)
| | | | | | | | - Thierry Passeron
- Department of DermatologyUniversity Côte d’AzurCHU NiceNiceFrance,University Côte d’Azur, INSERM U1065C3MNiceFrance
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Farris PK, Valacchi G. Ultraviolet Light Protection: Is It Really Enough? Antioxidants (Basel) 2022; 11:1484. [PMID: 36009203 PMCID: PMC9405175 DOI: 10.3390/antiox11081484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/25/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
Our current understanding of the pathogenesis of skin aging includes the role of ultraviolet light, visible light, infrared, pollution, cigarette smoke and other environmental exposures. The mechanism of action common to these exposures is the disruption of the cellular redox balance by the directly or indirectly increased formation of reactive oxygen species that overwhelm the intrinsic antioxidant defense system, resulting in an oxidative stress condition. Altered redox homeostasis triggers downstream pathways that contribute to tissue oxinflammation (cross-talk between inflammation and altered redox status) and accelerate skin aging. In addition, both ultraviolet light and pollution increase intracellular free iron that catalyzes reactive oxygen species generation via the Fenton reaction. This disruption of iron homeostasis within the cell further promotes oxidative stress and contributes to extrinsic skin aging. More recent studies have demonstrated that iron chelators can be used topically and can enhance the benefits of topically applied antioxidants. Thus, an updated, more comprehensive approach to environmental or atmospheric aging protection should include sun protective measures, broad spectrum sunscreens, antioxidants, chelating agents, and DNA repair enzymes.
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Affiliation(s)
- Patricia K. Farris
- Department of Dermatology, Tulane University School of Medicine, New Orleans, LA 70112, USA;
| | - Giuseppe Valacchi
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, I-44121 Ferrara, Italy
- Animal Science Department, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
- Department of Food and Nutrition, Kyung Hee University, Hoegi-Dong, Dongdaemun-Gu, Seoul 130-701, Korea
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9
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Carotenoids in Human SkinIn Vivo: Antioxidant and Photo-Protectant Role against External and Internal Stressors. Antioxidants (Basel) 2022; 11:antiox11081451. [PMID: 35892651 PMCID: PMC9394334 DOI: 10.3390/antiox11081451] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023] Open
Abstract
The antioxidant system of the human body plays a crucial role in maintaining redox homeostasis and has an important protective function. Carotenoids have pronounced antioxidant properties in the neutralization of free radicals. In human skin, carotenoids have a high concentration in the stratum corneum (SC)-the horny outermost layer of the epidermis, where they accumulate within lipid lamellae. Resonance Raman spectroscopy and diffuse reflectance spectroscopy are optical methods that are used to non-invasively determine the carotenoid concentration in the human SC in vivo. It was shown by electron paramagnetic resonance spectroscopy that carotenoids support the entire antioxidant status of the human SC in vivo by neutralizing free radicals and thus, counteracting the development of oxidative stress. This review is devoted to assembling the kinetics of the carotenoids in the human SC in vivo using non-invasive optical and spectroscopic methods. Factors contributing to the changes of the carotenoid concentration in the human SC and their influence on the antioxidant status of the SC in vivo are summarized. The effect of chemotherapy on the carotenoid concentration of the SC in cancer patients is presented. A potential antioxidant-based pathomechanism of chemotherapy-induced hand-foot syndrome and a method to reduce its frequency and severity are discussed.
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10
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Ruvolo E, Boothby-Shoemaker W, Kumar N, Hamzavi IH, Lim HW, Kohli I. Evaluation of efficacy of antioxidant-enriched sunscreen prodcuts against long wavelength ultraviolet A1 and visible light. Int J Cosmet Sci 2022; 44:394-402. [PMID: 35587114 DOI: 10.1111/ics.12785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/11/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The synergistic effects of VL and long wavelength UVA1 (VL+UVA1, 370-700 nm) on inducing pigmentation and erythema in skin have been demonstrated and linked to exacerbation of dermatologic conditions including melasma and post-inflammatory hyperpigmentation. This study aims to compare the photoprotection of organic sunscreens enriched with antioxidant (AO) combinations against VL+UVA1 induced biologic effects. The efficacy was compared to that offered by a commercially available tinted sunscreen. METHODS Ten healthy adult subjects with Fitzpatrick skin phototypes IV-VI were enrolled (nine completed). VL+UVA1 dose of 380 J/cm2 was utilized. Assessment methods were polarized photography, investigator global scoring, and diffuse reflectance spectroscopy (DRS). Measurements were obtained at baseline and immediately, 24 hours, and 7 days after irradiation. RESULTS Sites treated with tinted sunscreen product had significantly less pigmentation compared with untreated but irradiated skin at all time points. However, DRS results demonstrated that the 5-AO sunscreen performed comparably or better than all sunscreens tested with relatively lower dyschromia, delayed erythema and pigmentation. CONCLUSION These results highlight the potential of AO enriched sunscreens to be photoprotective against VL+UVA1. The combination of efficacy and the cosmetic appearance of this product may provide wider acceptability which is crucial considering the limited available means of protection against this waveband.
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Affiliation(s)
| | - Wyatt Boothby-Shoemaker
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, Michigan, USA.,Michigan State University College of Human Medicine, East Lansing, Michigan, USA
| | - Nishant Kumar
- College of Literature, Science and Arts, University of Michigan, Ann Arbor, Michigan, USA
| | - Iltefat H Hamzavi
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, Michigan, USA
| | - Indermeet Kohli
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, Michigan, USA.,Department of Physics and Astronomy, Wayne State University, Detroit, Michigan, USA
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11
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Pourang A, Tisack A, Ezekwe N, Torres AE, Kohli I, Hamzavi IH, Lim HW. Effects of visible light on mechanisms of skin photoaging. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2022; 38:191-196. [PMID: 34585779 DOI: 10.1111/phpp.12736] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/05/2021] [Accepted: 09/26/2021] [Indexed: 01/21/2023]
Abstract
Human skin is not only affected by ultraviolet radiation but also by visible light wavelengths emitted by sunlight, electronic devices, and light emitting diodes. Similar to the ultraviolet radiation, visible light has been implicated in photoaging. In this review, the effects of blue light, yellow light, red light, and broad visible light are discussed in relation with photoaging. Different visible light wavelengths likely contribute beneficial and deleterious effects on photoaging by way of interaction with specific photoreceptors, ROS production, and other photon-mediated reactions. Further in vivo studies are needed to determine the mechanism and action spectrum of photoaging in humans, as well as optimal photoprotection with coverage against visible light wavelengths.
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Affiliation(s)
- Aunna Pourang
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA
| | - Aaron Tisack
- Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Nneamaka Ezekwe
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA
| | - Angeli E Torres
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA
| | - Indermeet Kohli
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA.,Department of Physics and Astronomy, Wayne State University, Detroit, Michigan, USA
| | - Iltefat H Hamzavi
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA
| | - Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA
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12
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Ezekwe N, Maghfour J, Kohli I. Visible Light and The Skin. Photochem Photobiol 2022; 98:1264-1269. [DOI: 10.1111/php.13634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/31/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Nneamaka Ezekwe
- Department of Dermatology University of Colorado Aurora CO USA
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital Detroit MI
| | - Jalal Maghfour
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital Detroit MI
| | - Indermeet Kohli
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital Detroit MI
- Department of Physics and Astronomy Wayne State University Detroit MI
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13
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Infante VHP, Melo MO, Maia Campos PMBG. The impacts of sun protection and skin care habits in the biophysical and morphological properties of young men skin. J Cosmet Dermatol 2022; 21:5073-5080. [PMID: 35377516 DOI: 10.1111/jocd.14965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/28/2022] [Accepted: 03/29/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Previous studies have demonstrated that UVB radiation may cause changes in the epidermal permeability barrier and in the stratum corneum hydration. It is also well known that sun exposure causes erythema, skin cancer and other physiologic alterations. Furthermore, because of the cultural barrier, men usually apply less sunscreen. AIMS The objective of this study was to evaluate the cosmetic use and sun protection habits of young men, correlating their lifestyle with the biophysical and morphological skin characteristics, as well as to study how skin unprotected sun exposure can affect these features even in young people. PATIENTS/METHODS 60 participants between 18 and 28 years old were divided into two groups: with photoprotection habits (PP habits) and without photoprotection habits (No PP habits). They were questioned about their sunscreen and cosmetic products use. The skin parameters were evaluated using biophysical and skin imaging techniques. RESULTS AND CONCLUSION 60% of the participants did not apply sunscreen often and 80% did not consume other skin care products. No PP habits group presented an increase in the transepidermal water loss - TEWL and sebum level, as well as a reduction in the stratum corneum water content and dermis echogenicity. The skin characteristics evaluated in this study were correlated with the sun protection habits and skin care behavior showing that men face some sociocultural barrier to start the use of cosmetic products. Thus, it is important to consider this information for the dermatological clinical and development of cosmetic products for men's skin.
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Affiliation(s)
| | - Maisa O Melo
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo
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14
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Puaratanaarunkon T, Asawanonda P. A Randomized, Double Blinded, Split-Face Study of the Efficacy of Using a Broad Spectrum Sunscreen with Anti-Inflammatory Agent to Reduce Post Inflammatory Hyperpigmentation After Picosecond Laser. Clin Cosmet Investig Dermatol 2022; 15:331-337. [PMID: 35250287 PMCID: PMC8894080 DOI: 10.2147/ccid.s355329] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/19/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND Post inflammatory hyperpigmentation (PIH) is a sequela of laser procedures observed commonly in darker-skin individuals. In general, regular UV filters are beneficial in preventing PIH, but the comparison with sunscreen containing anti-inflammatory ingredients remains unexplored. OBJECTIVE To compare the efficacy of a sunscreen with anti-inflammatory agent (sunscreen A) in the reduction of PIH after a picosecond laser with that of regular sunscreen (sunscreen B). METHODS Fifty-nine acne vulgaris and acne scar patients with skin phototypes III and IV were treated with 1 session of picosecond laser with the microlens array to the whole face. Sunscreens A and B were randomized to be applied on either side of the face. Hyperpigmentation assessed by brown score mode on Visia®, acne quantity, porphyrins and patient satisfaction were evaluated at baseline, weeks 1, 2, 4 and 6. RESULTS Sunscreen A caused a higher reduction of the brown score compared to the other side but there was no statistically significant difference. Interestingly, a significant decrease of inflammatory acne lesions compared with baseline was observed as early as week 2 on the sunscreen A side (weeks 2, 4 and 6; P = 0.017, P = <0.001, and P = <0.001, respectively). Compared with sunscreen B, levels of porphyrins on sunscreen A side were significantly less at weeks 1 and 6 (weeks 1 and 6; P = 0.022 and P = 0.029, respectively). CONCLUSION This study demonstrated a tendency towards lower post-laser pigmentation when the sunscreen with anti-inflammatory agents was applied. This product also had an effective outcome as an adjunctive treatment option of acne vulgaris. THAI CLINICAL TRIALS REGISTRY ID TCTR20210305004 (URL: http://www.thaiclinicaltrials.org/show/TCTR20210305004).
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Affiliation(s)
- Thanaporn Puaratanaarunkon
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Pravit Asawanonda
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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15
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Reinhard BM. Plasmonic Enhancement Strategies for Light-Driven Microbe Inactivation. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:2325-2335. [PMID: 36313122 PMCID: PMC9611023 DOI: 10.1021/acs.jpcc.1c09951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Light can be an effective antimicrobial. UV-C light, in particular, is now commonly used to sterilize inanimate surfaces, water, and even air. Highly energetic light can, however, also lead to unwanted photodamage and be hazardous. Consequently, conventional light-mediated microbe inactivation is not suitable for all applications. Plasmonic nanostructures can enhance electromagnetic fields in the visible range of the electromagnetic spectrum and show unique light-induced responses that can drive strong antimicrobial effects even for wavelengths that without plasmonic enhancement have little to no antimicrobial impact. Plasmonic nanostructures offer thus a potential strategy to expand the antimicrobial effect of light to wavelength and intensity ranges in which light-associated collateral damages are lower. This Perspective examines selected plasmon-enhanced antimicrobial strategies, elucidates the underlying physico-chemical mechanisms, and discusses applications.
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Affiliation(s)
- Björn M. Reinhard
- Department of Chemistry, Boston University, Boston, MA 02215, United States
- The Photonics Center, Boston University, Boston, MA 02215, United States
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Licorice (Glycyrrhiza glabra, G. uralensis, and G. inflata) and Their Constituents as Active Cosmeceutical Ingredients. COSMETICS 2022. [DOI: 10.3390/cosmetics9010007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The interest in plant extracts and natural compounds in cosmetic formulations is growing. Natural products may significantly improve cosmetics performance since they have both cosmetic and therapeutic-like properties, known as cosmeceutical effects. Glycyrrhiza genus, belonging to the Leguminosae family, comprises more than 30 species, widely distributed worldwide. The rhizomes and roots are the most important medicinal parts currently used in pharmaceutical industries and in the production of functional foods and food supplements. In the last few years, the interest in their potential activities in cosmetic formulations has greatly increased. Glycyrrhiza spp. extracts are widely implemented in cosmetic products for their good whitening effect. The biological effects of Glycyrrhiza extracts are especially ascribable to the occurrence of specialized metabolites belonging to the flavonoid class. This review focuses on the botany and the chemistry of the main investigated Glycyrrhiza spp. (G. glabra, G. uralensis, and G. inflata) along with their cosmeceutical activities categorized as skin anti-aging, photoprotective, hair care, and anti-acne. It has been highlighted how, along with Glycyrrhiza extracts, three main flavonoids namely licochalcone A, glabridin, and dehydroglyasperin C are the most investigated compounds. It is noteworthy that other molecules from licorice show potential cosmeceutical effects. These data suggest further investigations to clarify their potential value for cosmetic industries.
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Rigel D, Lim HW, Draelos Z, Weber TM, Taylor S. PHOTOPROTECTION FOR ALL: CURRENT GAPS AND OPPORTUNITIES. J Am Acad Dermatol 2021; 86:S18-S26. [PMID: 34942298 DOI: 10.1016/j.jaad.2021.12.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/02/2021] [Accepted: 12/10/2021] [Indexed: 12/31/2022]
Abstract
The effects of solar radiation on human skin differ based on skin phototype, the presence or absence of photodermatoses, biological capacity to repair DNA damage, wavelength, intensity of sun exposure, geographic latitude, and other factors, underscoring the need for a more tailored approach to photoprotection. To date, the focus of photoprotection guidelines has been to prevent sunburn and DNA damage induced by ultraviolet (UV) radiation, both UVB and UVA; however, several recent studies have shown that visible light (VL) also generates reactive oxygen and nitrogen species that can contribute to skin damage and pigmentation on the skin, particularly in people of color. Therefore, dark-skinned individuals, while naturally better protected against UVB radiation by virtue of high eumelanin content in melanocytes, may need additional protection from VL-induced skin damage. The current options for photoprotection products need to expand, and potential strategies against VL include the addition of iron oxide, titanium dioxide, and biologically relevant antioxidants to sunscreen formulations, as well as supplementation with orally active antioxidants.
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Affiliation(s)
- Darrell Rigel
- Department of Dermatology, Icahn School of Medicine at Mt. Sinai, New York, NY USA
| | - Henry W Lim
- Department of Dermatology, Henry Ford Hospital, Detroit, MI USA
| | - Zoe Draelos
- Dermatology Consulting Services, PLLC, High Point, NC USA
| | | | - Susan Taylor
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
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18
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Impact of visible light on skin health: The role of antioxidants and free radical quenchers in skin protection. J Am Acad Dermatol 2021; 86:S27-S37. [PMID: 34942294 DOI: 10.1016/j.jaad.2021.12.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 12/02/2021] [Accepted: 12/13/2021] [Indexed: 12/29/2022]
Abstract
Until recently, the primary focus of photobiology has centered on the impact of UV radiation on skin health, including DNA damage and oncogenesis; however, the significant effects of visible light (VL) on skin remain grossly underreported. VL has been reported to cause erythema in individuals with light skin (Fitzpatrick skin types [FSTs] I-III) and pigmentary changes in individuals with dark skin types (FSTs IV-VI). These effects have importance in dermatologic diseases and potentially play a role in conditions aggravated by sun exposure, including phototoxicity in patients with FSTs I to III and post-inflammatory hyperpigmentation and melasma in patients with FSTs IV to VI. The induction of free radicals, leading to the generation of reactive species, is one driving mechanism of VL-induced skin pathologies, leading to the induction of melanogenesis and hyperpigmentation. Initial clinical studies have demonstrated the effectiveness of topical sunscreen with antioxidant combinations in inhibiting VL + UV-A1-induced erythema in FSTs I to III and reducing pigmentation in FSTs IV to VI. Antioxidants may help prevent the worsening of pigmentary disorders and can be incorporated into photoprotective strategies. It is essential that dermatologists and the public are aware of the impact of VL on skin, especially in patients with skin of color, and understand the available options for VL protection.
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Phenylene Bis-Diphenyltriazine (TriAsorB), a new sunfilter protecting the skin against both UVB + UVA and blue light radiations. Photochem Photobiol Sci 2021; 20:1475-1486. [PMID: 34643936 DOI: 10.1007/s43630-021-00114-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/05/2021] [Indexed: 12/22/2022]
Abstract
Sunlight induces actinic keratosis, skin cancers and photoaging. Photoprotection is thus a major issue in public health to prevent the harmful effects of solar ultraviolet (UV) radiations. Recent data have shown that the visible (VIS) and infrared (IR) radiations can lead to skin damage by oxidative stress, suggesting that a balanced protection across the entire spectrum of sunlight is necessary to prevent cutaneous alterations. In this context, we developed a new generation of sunfilter called Phenylene Bis-Diphenyltriazine or TriAsorB (CAS N°55514-22-2). The aim of the present study was to assess the photoprotective efficacy of TriAsorB from UV to IR light. Spectrophotometric assays were performed to measure absorption and reflectance of TriAsorB in the different spectral ranges of sunlight: UV, VIS including blue light or high energy visible (HEV) and IR. DNA damage was evaluated using reconstructed human epidermis (RHE): 8-hydroxy-2'-deoxyguanosine (8OHdG) in response to HEV exposure, pyrimidine dimers (CPDs) and (6-4) photoproducts following solar-simulated radiation (SSR). TriAsorB is a broad spectrum UVB + UVA filter including long UVA. Interestingly, it also absorbs VIS radiations, especially in the HEV region. These radiations are also reflected. Protection in the IR spectral range is weak. Furthermore, the sunfilter specifically protects the skin against the oxidative lesions 8OHdG induced by HEV and prevents SSR-induced DNA damage. Thus, TriAsorB is an innovative sunfilter that might be used in sun care products for skin photoprotection from UV to VIS radiations. Finally, it prevents sunlight genotoxicity and protected the skin against solar radiations, especially blue light.
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20
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Bromophenol Bis (2,3,6-Tribromo-4,5-dihydroxybenzyl) Ether Protects HaCaT Skin Cells from Oxidative Damage via Nrf2-Mediated Pathways. Antioxidants (Basel) 2021; 10:antiox10091436. [PMID: 34573068 PMCID: PMC8467934 DOI: 10.3390/antiox10091436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/02/2021] [Accepted: 09/06/2021] [Indexed: 12/11/2022] Open
Abstract
Excessive reactive oxygen species (ROS) promotes the oxidative stress of keratinocytes, eventually causing cell damage. The natural bromophenol bis (2,3,6-tribromo-4,5-dihydroxybenzyl) ether (BTDE) from marine red algae has been reported to have a varied bioactivity; however, its antioxidant effect has yet to be investigated systemically. Our present work aimed to explore the antioxidant effect of BTDE both on the molecular and cellular models and also to illustrate the antioxidant mechanisms. Our results showed that BTDE could effectively scavenge ABTS free radicals and protect HaCaT cells from damage induced by H2O2. Mechanism studies in HaCaT cells demonstrated that BTDE attenuated hydrogen peroxide (H2O2)-induced ROS production, reduced the malondialdehyde (MDA) level, decreased the oxidized glutathione (GSSG)/glutathione (GSH) ratio, and increased the antioxidant enzyme superoxide dismutase (SOD). Moreover, BTDE could inhibit the expression of Kelch-like epichlorohydrin-associated protein 1 (Keap1) and increase the expression of both nuclear factor erythroid 2-related factor 2 (Nrf2) and its downstream proteins TrXR1, HO-1, and NQO1. BTDE also activated the upstream signaling pathway of Nrf2 such as AKT pathway, while not activating the ERK or AMPKα pathways. In general, BTDE is a promising antioxidant to protect HaCaT cells against oxidative damage via Nrf2-mediated pathways.
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Zhou B, Wang H, Zhang B, Zhang L. Licochalcone B attenuates neuronal injury through anti-oxidant effect and enhancement of Nrf2 pathway in MCAO rat model of stroke. Int Immunopharmacol 2021; 100:108073. [PMID: 34454290 DOI: 10.1016/j.intimp.2021.108073] [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: 04/25/2021] [Revised: 07/26/2021] [Accepted: 08/11/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Investigating anti-oxidant therapies that lead to the diminution of oxidative injury is priority in clinical. We herein aimed to explore whether and how Licochalcone B (Lico B) act as an anti-oxidant in the stroke model. METHODS Middle cerebral artery occlusion (MCAO) was constructed as stroke model and exposed to various doses of Lico B. Behavioral tests and neurological behavior status were detected for neurological function examination. Histological staining was used for evaluating cerebral injury, and neuronal apoptosis or damage. Levels of oxidative stress and inflammation were also assessed by biochemical analysis and expression analysis. Nrf2 knockdown induced by lentiviral vector was used for the research on mechanism. RESULTS Lico B had improvement effects on cerebral infarction size, memory impairments, and neurological deficits after MCAO. Histological evaluation also revealed the amelioration of neuronal injury and apoptosis by Lico B, along with down-regulation of apoptosis-related proteins. Additionally, Lico B rescued the down-regulation of BDNF and NGF after MCAO. Moreover, Lico B suppressed the oxidative stress and inflammation, manifesting as the enhancement of SOD, GSH and IL-4, but the decline of MDA, iNOS, and TNF-α. Finally, Nrf2 knockdown reversed the Lico B-caused improvement in neuronal injury, apoptosis and oxidative stress levels. CONCLUSIONS The present study revealed the neuroprotective effects of Lico B in MCAO rats. Importantly, we proposed a potential mechanism that Lico B activated the Nrf2 pathway, thereby acting as anti-oxidant to attenuate neuronal injury and apoptosis after stroke. The proposed mechanism provided an encouraging possibility for anti-oxidant therapy of stroke.
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Affiliation(s)
- Baosheng Zhou
- Department of Neurosurgery, Tianjin First Central Hospital, Tianjin, China
| | - Honglin Wang
- Department of Interventional Medicine, Dazhou Central Hospital, Dazhou, China
| | - Bo Zhang
- Department of Neurosurgery, The people's hospital of Zhao Yuan city, Zhao Yuan, China
| | - Lianlian Zhang
- Department of Ultrasonography, The Fourth Affiliated Hospital of Nantong University, The First people's Hospital of Yancheng, Yancheng, Jiangsu Province, China.
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22
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Infante VHP, Lohan SB, Schanzer S, Campos PMBGM, Lademann J, Meinke MC. Eco-friendly sunscreen formulation based on starches and PEG-75 lanolin increases the antioxidant capacity and the light scattering activity in the visible light. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 222:112264. [PMID: 34320457 DOI: 10.1016/j.jphotobiol.2021.112264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 06/11/2021] [Accepted: 07/17/2021] [Indexed: 11/16/2022]
Abstract
Most modern sunscreens contain physical filters, which scatter the sunlight, increasing the photons' pathway in the upper stratum corneum. This effect can lead to a better efficacy of the UV filters and improve the diffuse reflection. However, the addition of nanosized inorganic UV filters reduces the antioxidant capacity of sunscreen formulations. Two cream formulations (F1, F2) which differ in the ingredient PEG75 Lanolin (F2), have been characterized for their radical protection factor (RPF) and their optical properties in vitro using electron paramagnetic resonance (EPR) spectroscopy and UV/VIS spectrometry. The RPF for PEG-75 Lanolin was also determined. Furthermore, their radical protection properties were analyzed on porcine skin ex vivo after visible light irradiation by EPR. The structure of each formulation in the skin surface was determined by reflectance confocal microscopy in vivo. The addition of lanolin increased the reflectance and reduced the transmittance for visible light, improving the scattering drastically. Besides, the antioxidant capacity was also increased for F2, something unpublished until now. F1 presented a lower scattering provided by starches. The sunscreens showed high scattering properties and antioxidant capacity, especially for F2, which presented the lowest radical formation in the skin model. These results are consistent with the RPF measurements where F2 has a higher RPF value (193 ± 3 × 1014 radicals/mg) than F1 (155 ± 4 × 1014 radicals/mg) and for PEG-75 Lanolin (37 ± 1 × 1014 radicals/mg). The combination of starches and PEG-75 Lanolin is the first solution to provide both, light scattering and antioxidant capacity, in sunscreens.
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Affiliation(s)
- Victor Hugo Pacagnelli Infante
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n - Vila Monte Alegre, Ribeirão Preto, São Paulo 14040-900, Brazil; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany
| | - Silke B Lohan
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany.
| | - Sabine Schanzer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany.
| | | | - Juergen Lademann
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany.
| | - Martina C Meinke
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Charitéplatz 1, 10117 Berlin, Germany.
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23
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Campiche R, Curpen SJ, Lutchmanen-Kolanthan V, Gougeon S, Cherel M, Laurent G, Gempeler M, Schuetz R. Pigmentation effects of blue light irradiation on skin and how to protect against them. Int J Cosmet Sci 2021; 42:399-406. [PMID: 32478879 PMCID: PMC7496068 DOI: 10.1111/ics.12637] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/30/2020] [Accepted: 05/26/2020] [Indexed: 12/18/2022]
Abstract
Background Visible light, in particular blue light, has been identified as an additional contributor to cutaneous photoageing. However, clinical studies demonstrating the clear effect of blue light on photoageing are still scarce, and so far, most studies have focused on broad‐spectrum visible light. Although there is evidence for increased skin pigmentation, the underlying mechanisms of photoageing in vivo are still unclear. Furthermore, there is still a need for active ingredients to significantly protect against blue light‐induced hyperpigmentation in vivo. Our study had two aims: to detect visible changes in skin pigmentation following repeated irradiation of the skin with LED‐based blue light and to reduce pigmentation using suitable active ingredients. Method We conducted a randomized, double‐blind and placebo‐controlled clinical study on 33 female volunteers with skin phototypes III and IV. We used a repetitive blue light (4 × 60 J cm−2, 450 nm) irradiation protocol on the volunteers’ inner forearms. Using hyperspectral imaging, we assessed chromophore status. In addition, we took chromameter measurements and photographs to assess visible hyperpigmentation. Results We measured significant changes in chromophore status (P < 0.001 vs baseline), that is of melanin, haemoglobin and oxygen saturation, immediately after blue light irradiation. In addition, we found visible skin colour changes which were expressed by a significant decrease in ITA° values (delta ITA° = −16.89, P < 0.001 vs baseline for the placebo group) and an increase in a* (delta a* = +3.37, P < 0.001 vs baseline for the placebo group) 24 h post‐irradiation. Hyperpigmentation and skin reddening were mitigated by both a formulation containing 3% of a microalgal product and a formulation containing 3% niacinamide. Conclusion Our study sets out an efficient and robust protocol for investigating both blue light‐induced cutaneous alterations, such as changes in skin chromophores, and signs of photoageing, such as hyperpigmentation. Moreover, we have shown evidence that both an extract of the microalga Scenedesmus rubescens and niacinamide (vitamin B3) have the potential to protect against blue light‐induced hyperpigmentation.
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Affiliation(s)
- R Campiche
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - S J Curpen
- Centre International de Développement Pharmaceutique (CIDP), BioPark Mauritius, SOCOTA Phoenicia, Sayed Hossen Road, Phoenix, 73408, Mauritius
| | - V Lutchmanen-Kolanthan
- Centre International de Développement Pharmaceutique (CIDP), BioPark Mauritius, SOCOTA Phoenicia, Sayed Hossen Road, Phoenix, 73408, Mauritius
| | - S Gougeon
- Newtone Technologies, 13 bis Place Jules Ferry, Lyon, 69006, France
| | - M Cherel
- Newtone Technologies, 13 bis Place Jules Ferry, Lyon, 69006, France
| | - G Laurent
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - M Gempeler
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - R Schuetz
- DSM Nutritional Products, Personal Care & Aroma, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
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Lopez-Gonzalez U, Casey A, Byrne HJ. Biochemical impact of solar radiation exposure on human keratinocytes monitored by Raman spectroscopy; effects of cell culture environment. JOURNAL OF BIOPHOTONICS 2021; 14:e202100058. [PMID: 33871950 DOI: 10.1002/jbio.202100058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/27/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Understanding and amelioration of the effects of solar radiation exposure are critical in preventing the occurrence of skin cancer. Towards this end, many studies have been conducted in 2D cell culture models under simplified and unrealistic conditions. 3D culture models better capture the complexity of in vivo physiology, although the effects of the 3D extracellular matrix have not been well studied. Monitoring the instantaneous and resultant cellular responses to exposure, and the influence of the 3D environment, could provide an enhanced understanding of the fundamental processes of photocarcinogenesis. This work presents an analysis of the biochemical impacts of simulated solar radiation (SSR) occurring in immortalised human epithelial keratinocytes (HaCaT), in a 3D skin model, compared to 2D culture. Cell viability was monitored using the Alamar Blue colorimetric assay (AB), and the impact of the radiation exposure, at the level of the biomolecular constituents (nucleic acids and proteins), were evaluated through the combination of Raman microspectroscopy and multivariate statistical analysis. The results suggest that SSR exposure induces alterations of the conformational structure of DNA as an immediate impact, whereas changes in the protein signature are primarily seen as a subsequent response.
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Affiliation(s)
- Ulises Lopez-Gonzalez
- School of Physics, Nanolab Research Center, FOCAS Research Institute, Technological University Dublin, Dublin, Ireland
| | - Alan Casey
- School of Physics, Nanolab Research Center, FOCAS Research Institute, Technological University Dublin, Dublin, Ireland
| | - Hugh J Byrne
- FOCAS Research Institute, Technological University Dublin, Dublin, Ireland
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Emon MAB, Knoll S, Doha U, Ladehoff L, Lalonde L, Baietto D, Sivaguru M, Bhargava R, Saif MTA. Dose- independent threshold illumination for non-invasive time-lapse fluorescence imaging of live cells. EXTREME MECHANICS LETTERS 2021; 46:101249. [PMID: 34095408 PMCID: PMC8171180 DOI: 10.1016/j.eml.2021.101249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Fluorescent microscopy employs monochromatic light for excitation, which can adversely affect the cells being observed. We reported earlier that fibroblasts relax their contractile force in response to green light of typical intensity. Here we show that such effects are independent of extracellular matrix and cell lines. In addition, we establish a threshold intensity that elicits minimal or no adverse effect on cell contractility even for long-time exposure. This threshold intensity is wavelength dependent. We cultured fibroblasts on soft 2D elastic hydrogels embedded with fluorescent beads to trace substrate deformation and cell forces. The beads move towards cell center when cells contract, but they move away when cells relax. We use relaxation/contraction ratio (λ r), in addition to traction force, as measures of cell response to red (wavelength, λ=635-650 nm), green (λ=545-580 nm) and blue (λ=455-490 nm) lights with varying intensities. Our results suggest that intensities below 57, 31 and 3.5 W/m2 for red, green and blue lights, respectively, do not perturb force homeostasis. To our knowledge, these intensities are the lowest reported safe thresholds, implying that cell traction is a highly sensitive readout of the effect of light on cells. Most importantly, we find these threshold intensities to be dose-independent; i.e., safe regardless of the energy dosage or time of exposure. Conversely, higher intensities result in widespread force-relaxation in cells with λ r > 1. Furthermore, we present a photo-reaction based model that simulates photo-toxicity and predicts threshold intensity for different wavelengths within the visible spectra. In conclusion, we recommend employing illumination intensities below aforementioned wavelength-specific thresholds for time-lapse imaging of cells and tissues in order to avoid light-induced artifacts in experimental observations.
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Affiliation(s)
- M A Bashar Emon
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Samantha Knoll
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Umnia Doha
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Lauren Ladehoff
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
| | - Luke Lalonde
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
| | - Danielle Baietto
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
| | - Mayandi Sivaguru
- Carle Woese Institute of Genomic Biology, University of Illinois at Urbana-Champaign
| | - Rohit Bhargava
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign
| | - M Taher A Saif
- Dept. of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
- Dept. of Bioengineering, University of Illinois at Urbana-Champaign
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign
- Corresponding author: M Taher A Saif, Gutgsell Professor, Associate Head for Graduate Programs and Research, Mechanical Science and Engineering, Research Professor, Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, 2101D Mechanical Engineering Laboratory, 105 S. Mathews Avenue, Urbana, IL 61801, USA, , Tel: 217-333-8552, Fax: 217-244-6534, http://saif.mechse.illinois.edu/
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Lim HW, Kohli I, Granger C, Trullàs C, Piquero-Casals J, Narda M, Masson P, Krutmann J, Passeron T. Photoprotection of the Skin from Visible Light‒Induced Pigmentation: Current Testing Methods and Proposed Harmonization. J Invest Dermatol 2021; 141:2569-2576. [PMID: 34112516 DOI: 10.1016/j.jid.2021.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 11/25/2022]
Abstract
Visible light (VL) can induce pigmentary alterations, especially in dark-skinned individuals, and exacerbate photodermatoses and pigmentary disorders. Currently, there is no standardized method for assessing sunscreen protection against VL. On the basis of a critical review of published in vitro and in vivo methods, a VL photoprotection assessment method based on pigmentation is proposed.
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Affiliation(s)
- Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA.
| | - Indermeet Kohli
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health System, Detroit, Michigan, USA; Department of Physics and Astronomy, College of Liberal Arts and Sciences, Wayne State University, Detroit, Michigan, USA
| | | | | | | | | | | | - Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Dusseldorf, Germany; Medical Faculty, Heinrich-Heine-University, Dusseldorf, Germany
| | - Thierry Passeron
- Department of Dermatology, Centre Hospitalaire Universitaire de Nice, University Côte d'Azur, Nice, France; C3M, INSERM U1065, University Côte d'Azur, Nice, France
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Yeo J, Shahidi F. Riboflavin-Sensitized Photooxidation of Low-Density-Lipoprotein (LDL) Cholesterol: A Culprit in the Development of Cardiovascular Diseases (CVDs). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4204-4209. [PMID: 33794086 DOI: 10.1021/acs.jafc.0c08088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The oxidation of human low-density-lipoprotein (LDL) particles is responsible for the development of cardiovascular diseases (CVDs). In the present study, the occurrence of riboflavin-sensitized photooxidation of LDL particles was examined in an in vitro system. The presence of light, oxygen, and photosensitizer (50 μM riboflavin) caused the riboflavin-sensitized photooxidation of human LDL particles thereby increasing in the conjugated dienes (CDs) by 32.5 ± 4.8% (p < 0.05), indicating that this could serve as a major culprit in the development of CVDs. A 1 h radiation caused a 63.6 ± 0.3% degradation of the riboflavin content, and this indicates the extremely fast reaction of the riboflavin-sensitized photooxidation. The singlet oxygen quenching capacity of β-carotene was determined at three different concentrations (10, 50, and 100 μM), exhibiting both antioxidant and prooxidant effects, depending on the concentrations used. In addition, ascorbic acid displayed a high incorporation rate into the LDL particles, implying its potential in preventing riboflavin photosensitization of LDL particles. To the best of our knowledge, this is the first report on the riboflavin-sensitized photooxidation of LDL particles in an in vitro system, proposing a new possible mechanism in the development of CVDs.
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Affiliation(s)
- JuDong Yeo
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada
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Wortzman M, Nelson DB. A comprehensive topical antioxidant inhibits oxidative stress induced by blue light exposure and cigarette smoke in human skin tissue. J Cosmet Dermatol 2021; 20:1160-1165. [PMID: 33560573 PMCID: PMC8248093 DOI: 10.1111/jocd.13991] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 01/29/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Skin damage from visible light predominantly results from exposure to the blue light spectrum (400-500 nm) which generates Reactive Oxygen Species (ROS) causing a cascade of harmful effects to skin. Topical antioxidants reduce the effects of free radical damage caused by environmental exposures. This study evaluated a comprehensive topical antioxidant's ability to inhibit ROS production induced by blue light and cigarette smoke (CS) in human skin. METHODS Two experiments were conducted utilizing human skin (Fitzpatrick Skin Types III and V; N = 3, each). After confirmed reactivity of untreated tissues at 412 nm, 20J/cm2 , untreated and pretreated (WEL-DS, 2 mg/cm2 ) skin tissue was exposed to blue light and blue light plus CS and left overnight. A nonfluorescent probe (DCFH-DA) was added to skin and exposed to blue light (412 nm, 20J/cm2 ) and blue light plus CS. Fluorescent 2',7'-DCF was generated upon enzymatic reduction and subsequent oxidation by ROS. RESULTS ROS increased at least tenfold following initial exposure to blue light and blue light plus CS in untreated skin. Pretreatment with WEL-DS decreased ROS in FST III exposed to blue light by 51% and 46% in skin exposed to blue light plus CS vs. untreated skin (both, P < .001). In FST V, pretreatment with WEL-DS decreased ROS exposed to blue light by 54% (P < .001) and 50% in skin exposed to blue light plus CS vs. untreated skin (P < .0001). CONCLUSION WEL-DS demonstrated significant reduction in ROS induced by blue light and blue light in combination with CS compared with untreated, exposed skin.
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29
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Geisler AN, Austin E, Nguyen J, Hamzavi I, Jagdeo J, Lim HW. Visible light. Part II: Photoprotection against visible and ultraviolet light. J Am Acad Dermatol 2021; 84:1233-1244. [PMID: 33640513 DOI: 10.1016/j.jaad.2020.11.074] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 01/08/2023]
Abstract
Cutaneous photobiology studies have focused primarily on the ultraviolet portion of the solar spectrum. Visible light (VL), which comprises 50% of the electromagnetic radiation that reaches the Earth's surface and, as discussed in Part I of this CME, has cutaneous biologic effects, such as pigment darkening and erythema. Photoprotection against VL includes avoiding the sun, seeking shade, and using photoprotective clothing. The organic and inorganic ultraviolet filters used in sunscreens do not protect against VL, only tinted sunscreens do. In the United States, these filters are regulated by the Food and Drug Administration as an over-the-counter drug and are subject to more stringent regulations than in Europe, Asia, and Australia. There are no established guidelines regarding VL photoprotection. Alternative measures to confer VL photoprotection are being explored. These novel methods include topical, oral, and subcutaneous agents. Further development should focus on better protection in the ultraviolet A1 (340-400 nm) and VL ranges while enhancing the cosmesis of the final products.
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Affiliation(s)
| | - Evan Austin
- Department of Dermatology, Center for Photomedicine, SUNY Downstate Medical Center, Brooklyn, New York; Dermatology Service, VA New York Harbor Healthcare System, Brooklyn, New York
| | - Julie Nguyen
- Department of Dermatology, Center for Photomedicine, SUNY Downstate Medical Center, Brooklyn, New York; Dermatology Service, VA New York Harbor Healthcare System, Brooklyn, New York
| | - Iltefat Hamzavi
- Department of Dermatology, Photomedicine and Photobiology Unit, Henry Ford Health System, Detroit, Michigan
| | - Jared Jagdeo
- Department of Dermatology, Center for Photomedicine, SUNY Downstate Medical Center, Brooklyn, New York; Dermatology Service, VA New York Harbor Healthcare System, Brooklyn, New York.
| | - Henry W Lim
- Department of Dermatology, Photomedicine and Photobiology Unit, Henry Ford Health System, Detroit, Michigan
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Krutmann J, Schikowski T, Morita A, Berneburg M. Environmentally-Induced (Extrinsic) Skin Aging: Exposomal Factors and Underlying Mechanisms. J Invest Dermatol 2021; 141:1096-1103. [PMID: 33541724 DOI: 10.1016/j.jid.2020.12.011] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/29/2020] [Accepted: 12/07/2020] [Indexed: 12/12/2022]
Abstract
As a barrier organ, the skin is an ideal model to study environmentally-induced (extrinsic) aging. In this review, we explain the development of extrinsic skin aging as a consequence of skin exposure to specific exposomal factors, their interaction with each other, and the modification of their effects on the skin by genetic factors. We also review the evidence that exposure to these exposomal factors causes extrinsic skin aging by mechanisms that critically involve the accumulation of macromolecular damage and the subsequent development of functionally altered and/or senescent fibroblasts in the dermal compartment of the skin.
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Affiliation(s)
- Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany; Medical Faculty, Heinrich Heine University, Düsseldorf, Germany; Human Phenome Institute, Fudan University, Shanghai, China.
| | - Tamara Schikowski
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University, Nagoya, Japan
| | - Mark Berneburg
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
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Yuan LW, Jiang XM, Xu YL, Huang MY, Chen YC, Yu WB, Su MX, Ye ZH, Chen X, Wang Y, Lu JJ. Licochalcone A inhibits interferon-gamma-induced programmed death-ligand 1 in lung cancer cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 80:153394. [PMID: 33130472 DOI: 10.1016/j.phymed.2020.153394] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 05/12/2023]
Abstract
BACKGROUND Programmed death-ligand 1 (PD-L1), which can be induced by interferon-gamma (IFN-γ) in the tumor microenvironment, is a critical immune checkpoint in cancer immunotherapy. Natural products which reduce IFN-γ-induced PD-L1 might be exert immunotherapy effect. Licochalcone A (LCA), a natural compound derived from the root of Glycyrrhiza inflata Batalin. (Fabaceae), was found to interfere IFN-γ-induced PD-L1. PURPOSE The aim of this study is to further clarify the effect and the mechanism of LCA on inhibiting IFN-γ-induced PD-L1 in lung cancer cells. METHODS The expression levels of PD-L1 were evaluated by flow cytometry, western blot and qRT-PCR. Click-iT protein synthesis assay and luciferase assay were used to identify the effect of LCA on protein synthesis. Jurkat T cell proliferation and apoptosis in the co-culture system were detected by flow cytometry. Flow cytometry was also applied to evaluate reactive oxygen species (ROS) generation. RESULTS LCA downregulated IFN-γ-induced PD-L1 protein expression and membrane localization in human lung cancer cells, regardless of inhibiting PD-L1 mRNA level or promoting its protein degradation. LCA decreased apoptosis and proliferative inhibition of Jurkat T cells caused by IFN-γ-induced PD-L1-expressing in A549 cells in the co-culture system. Strikingly, LCA was verified as a protein synthesis inhibitor, which reduced both cap-dependent and -independent translation. LCA inhibited PD-L1 translation, likely due to inhibition of 4EBP1 phosphorylation (Ser 65) and activation of PERK-eIF2α pathway. Furthermore, LCA induced ROS generation in a time-dependent manner in lung cancer cells. N-acetyl-L-cysteine (NAC) not only revered ROS generation triggered by LCA but also restored IFN-γ-induced expression of PD-L1. Both the inhibition of 4EBP1 phosphorylation (Ser 65) and activation of PERK-eIF2α axis triggered by LCA was restored by co-treatment with NAC. CONCLUSION LCA abrogated IFN-γ-induced PD-L1 expression via ROS generation to abolish the protein translation, indicating that LCA has the potential to be applied in cancer immunotherapy.
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Affiliation(s)
- Luo-Wei Yuan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xiao-Ming Jiang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yu-Lian Xu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Mu-Yang Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yu-Chi Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Wei-Bang Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Min-Xia Su
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Zi-Han Ye
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xiuping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China.
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Synthetic methods and biological applications of retrochalcones isolated from the root of Glycyrrhiza species: A review. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Abstract
Skin aging results from the interaction of genetic and nongenetic so-called exposomal, factors. Among the exposomal factors, chronic, life-long exposure to sunlight is of eminent importance for the development of skin aging characteristics. Importantly, photoaging of human skin is not only caused by ultraviolet (UV) B and A radiation, but is also the consequence of exposure to wavelengths beyond the UV spectrum. These include visible, i.e. blue light (400-440 nm) as well as the short part of infrared radiation, i.e. IRA (760-1200 nm). Here we summarize the scientific evidence supporting these conclusions and emphasize the resulting consequences for daily photoprotection of human skin. We also explain the clinical significance of the concept that is offered by the skin aging exposome, which e.g. takes into account the fact that sunlight interacts with other exposomal factors and that this interaction is important for photoaging of the skin.
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Affiliation(s)
- J Krutmann
- IUF - Leibniz-Institut für umweltmedizinische Forschung, Auf'm Hennekamp 50, 40225, Düsseldorf, Deutschland.
| | - M Berneburg
- Klinik und Poliklinik für Dermatologie, UKR - Universitätsklinikum Regensburg, Regensburg, Deutschland
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Wu CP, Lusvarghi S, Hsiao SH, Liu TC, Li YQ, Huang YH, Hung TH, Ambudkar SV. Licochalcone A Selectively Resensitizes ABCG2-Overexpressing Multidrug-Resistant Cancer Cells to Chemotherapeutic Drugs. JOURNAL OF NATURAL PRODUCTS 2020; 83:1461-1472. [PMID: 32347726 PMCID: PMC7402219 DOI: 10.1021/acs.jnatprod.9b01022] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The overexpression of the ATP-binding cassette (ABC) transporter ABCG2 has been linked to clinical multidrug resistance in solid tumors and blood cancers, which remains a significant obstacle to successful cancer chemotherapy. For years, the potential modulatory effect of bioactive compounds derived from natural sources on ABCG2-mediated multidrug resistance has been investigated, as they are inherently well tolerated and offer a broad range of chemical scaffolds. Licochalcone A (LCA), a natural chalcone isolated from the root of Glycyrrhiza inflata, is known to possess a broad spectrum of biological and pharmacological activities, including pro-apoptotic and antiproliferative effects in various cancer cell lines. In this study, the chemosensitization effect of LCA was examined in ABCG2-overexpressing multidrug-resistant cancer cells. Experimental data demonstrated that LCA inhibits the drug transport function of ABCG2 and reverses ABCG2-mediated multidrug resistance in human multidrug-resistant cancer cell lines in a concentration-dependent manner. Results of LCA-stimulated ABCG2 ATPase activity and the in silico docking analysis of LCA to the inward-open conformation of human ABCG2 suggest that LCA binds ABCG2 in the transmembrane substrate-binding pocket. This study provides evidence that LCA should be further evaluated as a modulator of ABCG2 in drug combination therapy trials against ABCG2-expressing drug-resistant tumors.
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Affiliation(s)
- Chung-Pu Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Sabrina Lusvarghi
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Sung-Han Hsiao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Te-Chun Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yan-Qing Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Yang-Hui Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Physiology and Pharmacology, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Tai-Ho Hung
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Suresh. V. Ambudkar
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-4255, United States
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A Randomized Study to Determine the Sun Protection Factor of Natural Pterostilbene from Pterocarpus Marsupium. COSMETICS 2020. [DOI: 10.3390/cosmetics7010016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Ultraviolet (UV) rays and its harmful effects have always been a concern to skin health. Sunscreen and sunblock prevent the harmful effects of UV radiation on the skin. Sun Protection Factor (SPF) is an indication of the sun-protective capacity of an ingredient. There is an ever increasing interest in the cosmetic industry for developing novel functional ingredients from natural sources. The purpose of this study was to determine in-vitro and in vivo SPF of natural 90% pterostilbene extracted from the dried heartwood of Pterocarpus marsupium (Indian Kino). The SPF of purified pterostilbene and a formulation containing 0.4% pterostilbene was determined In Vitro using a UV spectrophotometer. Pterostilbene had an SPF of 21.73 ± 0.06, while the cream formulation had an SPF of 8.84 ± 0.01. The in vivo SPF of the 0.4% pterostilbene cream in humans was found to be 6.2 ± 1.30. Primary skin irritation tests in human subjects showed the formulation was safe and had no irritation potential. Pterostilbene was also found to have significant antioxidant activity as determined by free radical scavenging assays in vitro. These results suggest that natural pterostilbene is an antioxidant and shows SPF value both in-vitro and in the human clinical study and thus could be used as an ingredient in topical sun-protective formulations.
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Mann T, Eggers K, Rippke F, Tesch M, Buerger A, Darvin ME, Schanzer S, Meinke MC, Lademann J, Kolbe L. High-energy visible light at ambient doses and intensities induces oxidative stress of skin-Protective effects of the antioxidant and Nrf2 inducer Licochalcone A in vitro and in vivo. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2019; 36:135-144. [PMID: 31661571 PMCID: PMC7078816 DOI: 10.1111/phpp.12523] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 09/24/2019] [Accepted: 10/23/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Solar radiation causes skin damage through the generation of reactive oxygen species (ROS). While UV filters effectively reduce UV-induced ROS, they cannot prevent VIS-induced (400-760 nm) oxidative stress. Therefore, potent antioxidants are needed as additives to sunscreen products. METHODS We investigated VIS-induced ROS formation and the photoprotective effects of the Nrf2 inducer Licochalcone A (LicA). RESULTS Visible spectrum of 400-500 nm dose-dependently induced ROS in cultured human fibroblasts at doses equivalent to 1 hour of sunshine on a sunny summer day (150 J/cm2 ). A pretreatment for 24 hours with 1 µmol/L LicA reduced ROS formation to the level of unirradiated cells while UV filters alone were ineffective, even at SPF50+. In vivo, topical treatment with a LicA-containing SPF50 + formulation significantly prevented the depletion of intradermal carotenoids by VIS irradiation while SPF50 + control did not protect. CONCLUSION LicA may be a useful additive antioxidant for sunscreens.
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Affiliation(s)
- Tobias Mann
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Kerstin Eggers
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Frank Rippke
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Mirko Tesch
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Anette Buerger
- Beiersdorf AG, Research and Development, Hamburg, Germany
| | - Maxim E Darvin
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sabine Schanzer
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Martina C Meinke
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jürgen Lademann
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Ludger Kolbe
- Beiersdorf AG, Research and Development, Hamburg, Germany
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