1
|
Andres Garcia-Diosa J, Grundmeier G, Keller A. Highly Efficient Quenching of Singlet Oxygen by DNA Origami Nanostructures. Chemistry 2024; 30:e202402057. [PMID: 38842532 DOI: 10.1002/chem.202402057] [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: 06/02/2024] [Revised: 06/06/2024] [Accepted: 06/06/2024] [Indexed: 06/07/2024]
Abstract
DNA origami nanostructures (DONs) are able to scavenge reactive oxygen species (ROS) and their scavenging efficiency toward ROS radicals was shown to be comparable to that of genomic DNA. Herein, we demonstrate that DONs are highly efficient singlet oxygen quenchers outperforming double-stranded (ds) DNA by several orders of magnitude. To this end, a ROS mixture rich in singlet oxygen is generated by light irradiation of the photosensitizer methylene blue and its cytotoxic effect on Escherichia coli cells is quantified in the presence and absence of DONs. DONs are found to be vastly superior to dsDNA in protecting the bacteria from ROS-induced damage and even surpass established ROS scavengers. At a concentration of 15 nM, DONs are about 50 000 times more efficient ROS scavengers than dsDNA at an equivalent concentration. This is attributed to the dominant role of singlet oxygen, which has a long diffusion length and reacts specifically with guanine. The dense packing of the available guanines into the small volume of the DON increases the overall quenching probability compared to a linear dsDNA with the same number of base pairs. DONs thus have great potential to alleviate oxidative stress caused by singlet oxygen in diverse therapeutic settings.
Collapse
Affiliation(s)
- Jaime Andres Garcia-Diosa
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, Paderborn, 33098, Germany
| | - Guido Grundmeier
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, Paderborn, 33098, Germany
| | - Adrian Keller
- Technical and Macromolecular Chemistry, Paderborn University, Warburger Str. 100, Paderborn, 33098, Germany
| |
Collapse
|
2
|
Du X, Ma X, Gao Y. The physiological function of squalene and its application prospects in animal husbandry. Front Vet Sci 2024; 10:1284500. [PMID: 38292136 PMCID: PMC10824843 DOI: 10.3389/fvets.2023.1284500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
Squalene, which is a natural triterpenoid unsaturated hydrocarbon, is abundant in shark liver and plant seeds. Squalene has various physiological functions such as being anti-inflammatory and antioxidant. This paper reviews the physiological functions of squalene and its application prospects in livestock and poultry production, with a view to providing a theoretical basis for its in-depth application in animal husbandry.
Collapse
Affiliation(s)
- Xin Du
- College of Life Science, Baicheng Normal University, Baicheng, China
| | - Xue Ma
- College of Life Science, Baicheng Normal University, Baicheng, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yang Gao
- College of Life Science, Baicheng Normal University, Baicheng, China
| |
Collapse
|
3
|
Fontbonne A, Teme B, Abric E, Lecerf G, Callejon S, Moga A, Cadars B, Giraud F, Chavagnac-Bonneville M, Ardiet N, Guyoux A, Trompezinski S. Positive and ecobiological contribution in skin photoprotection of ectoine and mannitol combined in vivo with UV filters. J Cosmet Dermatol 2024; 23:308-315. [PMID: 37539499 DOI: 10.1111/jocd.15893] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 05/04/2023] [Accepted: 06/14/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND Chronic exposure to ultraviolet (UV) irradiation causes immunosuppression, photoaging, and carcinogenesis by induction of a cascade of skin damages. Sunscreens currently on the market are not absorbing UV rays uniformly throughout the full UV range, high sun protection factor (SPF) sunscreens absorb most of UVB rays but are less effective in absorbing the UVA part of the spectrum. In the context, one approach could consist of preserving the skin natural resources and mechanisms, which is the foundation of the ecobiological approach, by combing UV filters and antioxidants to enhance their photoprotective effect. METHODS First, the photoprotection properties of ectoine and mannitol association were characterized by the quantification of glutathione, reactive oxygen species, and double-stranded DNA breaks and by the epidermal Langerhans cells functionality. Second, the protection of squalene oxidation, catalase activity, and trans-urocanic acid (UCA) by the ectoine and mannitol association combined or not with SPF30 UV filters was assessed in vivo via non-invasive skin samplings in 10 subjects on irradiated areas. RESULTS Using in vitro irradiated skin cell models, we demonstrated that this association significantly preserved intracellular glutathione levels, reduced DNA strand breaks induced by oxidative stress, and maintained Langerhans cell functionality. In vivo this association combined with UV filters presented significantly higher protection of three natural defense systems altered by UV compared to UV filters alone: squalene oxidation, catalase activity, and preservation of trans-UCA. CONCLUSION This study demonstrates the ecobiological potential of combining UV filters with biological protection to increase skin photoprotection provided by specific active ingredients with antioxidative and immunosuppressive properties.
Collapse
Affiliation(s)
- Arnaud Fontbonne
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | - Baba Teme
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | - Elise Abric
- Research and Development Department, NAOS Group, Aix-en-Provence, France
| | | | - Sylvie Callejon
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | | | - Benoît Cadars
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | - Félix Giraud
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | - Marlène Chavagnac-Bonneville
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| | - Nathalie Ardiet
- Research and Development Department, NAOS Group, Aix-en-Provence, France
| | - Aurélie Guyoux
- Research and Development Department, NAOS Group, Aix-en-Provence, France
| | - Sandra Trompezinski
- Research and Development Department, NAOS Group, Aix-en-Provence, France
- NAOS Institute of Life Science, Aix-en-Provence, France
| |
Collapse
|
4
|
Bergera-Virassamynaïk S, Ardiet N, Sayag M. Evaluation of the Efficacy of an Ecobiological Dermo-Cosmetic Product to Help Manage and Prevent Relapses of Eyelid Atopic Dermatitis. Clin Cosmet Investig Dermatol 2023; 16:677-686. [PMID: 36969386 PMCID: PMC10032143 DOI: 10.2147/ccid.s401576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/05/2023] [Indexed: 03/20/2023]
Abstract
Purpose Atopic dermatitis (AD) is a chronic relapsing, inflammatory disease which causes eczematous lesions. Itching and symptoms visibility can have a significant impact on quality of life. This is the case when eyelids are affected. Therefore, we evaluated a dermo-cosmetic product designed to care AD on eyelids. Subjects and Methods An initial analysis of the product included 20 healthy women with no AD signs. A clinical evaluation of the effect of the product on AD sign severity was performed on 33 subjects presenting AD symptoms on eyelids. We also analyzed the product's capacity to prevent relapses in a parallel group clinical evaluation performed on 66 subjects. Results First, on the forearm skin of healthy subjects, the product reduces erythema and decreases transepidermal water loss when used for 28 days. Second, when clinically evaluated on subjects with eyelid symptoms undergoing a corticoid treatment, the product leads to reduced AD signs scored by a dermatologist, better self-evaluation of symptoms by subjects, and improved quality of life. Besides, upon assessment in a randomized controlled clinical evaluation with subjects prone to AD relapses but without symptoms, the product also drastically reduces relapse frequency. If erythema reduction is the only sign identified by a dermatologist, the product greatly and rapidly improves the quality of life of subjects. Conclusion These effects can be explained by the known actions of the product's ingredients. Rich in hydrating compounds, fatty acids and anti-inflammatory compounds, it aims at maintaining and restoring the epidermis structure and function to preserve it from irritants. It effectively shows that a daily care and hygiene routine with a dermo-cosmetic product designed according to an ecobiological approach leads to objective improvement of AD and subjective perception of quality of life.
Collapse
Affiliation(s)
- Sandrine Bergera-Virassamynaïk
- NAOS Group, Research and Development Department, Aix-en-Provence, 13290, France
- Correspondence: Sandrine Bergera-Virassamynaïk, NAOS Group, Research and Development Department, Aix-en-Provence, 13290, France, Tel +33 (0)4 26 20 65 04, Email
| | - Nathalie Ardiet
- NAOS Group, Research and Development Department, Aix-en-Provence, 13290, France
| | - Michèle Sayag
- NAOS Group, Research and Development Department, Aix-en-Provence, 13290, France
| |
Collapse
|
5
|
Nicotinamide and calcipotriol counteract UVB-induced photoaging on primary human dermal fibroblasts. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2022. [DOI: 10.1016/j.jpap.2022.100158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
6
|
Choi S, Na H, Rahman RT, Sim J, Chang JB, Nam YS. Chitosan-coated mesoporous silica particles as a plastic-free platform for photochemical suppression and stabilization of organic ultraviolet filters. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 235:112565. [PMID: 36113261 DOI: 10.1016/j.jphotobiol.2022.112565] [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: 07/22/2022] [Revised: 08/20/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Photochemical instability and reactivity of organic ultraviolet (UV) filters not only degrade the performance of sunscreen formulations but also generate toxic photodegradation products and reactive oxygen species (ROS). Although the encapsulation of organic UV filters into synthetic polymer particles has been widely investigated, synthetic plastics were recently banned for personal care and cosmetic products due to marine and coastal pollution issues. Here we present a plastic-free, photochemically stable and inactive UV filter platform based on chitosan-coated mesoporous silica microparticles, denoted 'mSOCPs', incorporating octyl methoxycinnamate (OMC) as a sunscreen agent. Sunlight induced the degradation of ∼80% free OMC in artificial sweat in 1 h at room temperature, while only 20% of OMC degraded for 3 h when encapsulated within mSOCPs. Moreover, mSOCPs efficiently suppressed the photochemical generation of ROS by about 99% through the combined effects of the mesoporous silica structure and chitosan coating. Accordingly, mSOCPs substantially increased the cell viability of fibroblasts exposed to UV irradiation. This work demonstrates that the biopolymer coatings of mesoporous inorganic particles can be a promising approach to the plastic-free encapsulation of organic UV filters for suppressing their photochemical reactivity and degradation.
Collapse
Affiliation(s)
- Saehan Choi
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyebin Na
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Rafia Tasnim Rahman
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jueun Sim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jae-Byum Chang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yoon Sung Nam
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
| |
Collapse
|
7
|
Antioxidant and Anti-Inflammatory Activity of Five Medicinal Mushrooms of the Genus Pleurotus. Antioxidants (Basel) 2022; 11:antiox11081569. [PMID: 36009288 PMCID: PMC9405179 DOI: 10.3390/antiox11081569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/26/2022] Open
Abstract
Within the group of higher fungi, edible medicinal mushrooms have a long history of being used as food and in folk medicine. These species contain biologically active substances with many potential beneficial effects on human health. The Pleurotus genus is representative of medicinal mushrooms because Pleurotus ostreatus is one of the most commonly cultivated culinary mushrooms. In our study, we focused on lesser-known species in the genus Pleurotus and measured their antioxidant and anti-inflammatory activity. We prepared extracts of the mushrooms and analyzed them using HPLC−HRMS, GC−MS, and 1H-NMR. Significant differences in biological activities were found among the Pleurotus spp. extracts. A MeOH extract of P. flabellatus was the most active as a radical scavenger with the highest ORAC, while a chloroform extract had significant anti-inflammatory COX-2 activity. The 80% MeOH extract of P. flabellatus contained the highest amounts of ergosterol, ergothioneine, and mannitol. The 80% MeOH extract of P. ostreatus Florida was the most active in the NF-κB inhibition assay and had the highest content of β-glucans (43.3% by dry weight). Given the antioxidant and anti-inflammatory properties of P. flabellatus, the potential therapeutic usefulness of this species is worth evaluating through in-depth investigations and confirmation by clinical trials.
Collapse
|
8
|
Zhao Y, Li Z, Wang X, Zhao F, Wang C, Zhang Q, Chen X, Geng Z, Zhang C. Resveratrol Attenuates Heat Stress-Induced Impairment of Meat Quality in Broilers by Regulating the Nrf2 Signaling Pathway. Animals (Basel) 2022; 12:ani12151889. [PMID: 35892539 PMCID: PMC9330235 DOI: 10.3390/ani12151889] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/16/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022] Open
Abstract
Studies have indicated that dietary resveratrol (RES) improves the meat quality of broilers subjected to heat stress (HS), but the mechanism of action remains unclear. Therefore, the main purpose of this study was to investigate the effect of RES on meat quality, muscle antioxidant status, and its mechanism of action in broilers under HS. A total of 162 male AA broilers at 21 days old with similar weight were randomly assigned to 3 treatment groups with 6 replicates each. The control group (ambient temperature: 22 ± 1 °C) and HS group (ambient temperature: 33 ± 1 °C for 10 h a day from 8:00 to 18:00 and 22 ± 1 °C for the remaining time) were fed a basal diet and the HS + RES group was fed a basal diet with 400 mg/kg RES. The feeding was conducted for 21 continuous days. The results indicated that HS decreased final body weight (BW), average daily gain (ADG), average daily feed intake (ADFI), breast and leg muscle yield, a*24h, pH24h, the activities of catalase (CAT), glutathione S-transferase (GST) and glutathione peroxidase (GSH-Px), and mRNA levels of nuclear factor erythroid 2−related factor 2 (Nrf2), heme oxygenase-1 (HO-1), NADPH quinone oxidoreductase 1 (NQO1), and GSH-Px (p < 0.05). HS also increased b*45min, L*24h, drip loss, malondialdehyde (MDA) content, and kelch-like epichlorohydrin-associated protein 1 (Keap1) mRNA level (p < 0.05). Compared with the HS group, the HS + RES group exhibited a higher ADG, breast and leg muscle yield, a*24h, pH24h, activities of GST and GSH-Px, and mRNA levels of Nrf2, HO-1, and NQO1 but had lower drip loss and Keap1 mRNA level (p < 0.05). RES can improve meat quality and the muscle antioxidant ability of heat-stressed broilers by activating the Nrf2 signaling pathway.
Collapse
|
9
|
Camillo L, Gironi LC, Zavattaro E, Esposto E, Savoia P. Nicotinamide Attenuates UV-Induced Stress Damage in Human Primary Keratinocytes from Cancerization Fields. J Invest Dermatol 2021; 142:1466-1477.e1. [PMID: 34695410 DOI: 10.1016/j.jid.2021.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/20/2021] [Accepted: 10/11/2021] [Indexed: 11/16/2022]
Abstract
UVB radiation directly damages DNA, increases ROS and nitric oxide (NO) release, and promotes inflammation leading to genomic instability and cell death. Nicotinamide (NAM) is the precursor of NAM adenine dinucleotide, essential for cell energy production and DNA damage repair. NAM protects HaCat cells from UV-induced impairment; however, little is known about its effects on human primary keratinocytes and those isolated from field cancerization (i.e., field cancerization human primary keratinocytes [FC-HPKs]). We examined the role of NAM against UV-induced oxidative stress damages in FC-HPKs, isolated from precancerous lesions and skin cancers, and in normal human epidermal keratinocytes. Cells were treated for 18, 24, and 48 hours with NAM (5, 25, and 50 μM, respectively) before UVB irradiation. FC-HPK showed four-fold higher basal ROS levels than normal human epidermal keratinocytes; NAM downregulated ROS production only in irradiated FC-HPKs, which showed a greater sensibility to UV rays. UV exposure increased OGG1, inducible nitric oxide synthase, and IL-1β expression, an effect counteracted by NAM pretreatment. Intracellular nitric oxide production and DNA damages were inhibited by NAM exposure before irradiation. Collectively, our findings indicate that pretreatment with 25 μM NAM 24 hours before UVB irradiation effectively prevents oxidative stress formation, DNA damage, and inflammation in both normal human epidermal keratinocytes and FC-HPKs.
Collapse
Affiliation(s)
- Lara Camillo
- Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Laura C Gironi
- Maggiore della Carità University Hospital, Novara, Italy.
| | - Elisa Zavattaro
- Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Elia Esposto
- Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| | - Paola Savoia
- Department of Health Sciences, University of Eastern Piedmont, Novara, Italy
| |
Collapse
|
10
|
Lai W, Wang H. Detection and Quantification of UV-irradiation-induced DNA Damages by Liquid Chromatography-Mass Spectrometry and Immunoassay †. Photochem Photobiol 2021; 98:598-608. [PMID: 34679215 DOI: 10.1111/php.13546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 11/29/2022]
Abstract
Solar ultraviolet (UV)-induced DNA lesions are associated with skin carcinogenesis. The detection of these DNA lesions is important to understand their genotoxicity and health effects. However, sunlight exposure-relevant DNA damage measurement is still a challenge. Here, we summarize our recent progresses on the related analytical techniques, including synthesis of dimeric lesions, the optimization of procedures for ultrahigh performance liquid chromatography-coupled mass spectrometry (UHPLC-MS/MS), and the maturation of anti-T(6-4)T photoproduct antibodies and their potential applications for immunoassay.
Collapse
Affiliation(s)
- Weiyi Lai
- The State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Hailin Wang
- Environment School, Institute for Advanced Study, UCAS, Hangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
11
|
Lyons AB, Zubair R, Kohli I, Nahhas AF, Braunberger TL, Mokhtari M, Ruvolo E, Lim HW, Hamzavi IH. Mitigating Visible Light and Long Wavelength UVA1-induced Effects with Topical Antioxidants. Photochem Photobiol 2021; 98:455-460. [PMID: 34549819 DOI: 10.1111/php.13525] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/19/2021] [Indexed: 12/19/2022]
Abstract
The role of topical antioxidants (AOs) on visible light plus ultraviolet A1 (VL+UVA1)-induced skin changes were evaluated. Twenty subjects with skin phototypes (SPTs) I-VI had placebo and concentrations of an AO blend applied to their back (AO 0.5%, 1.0% and 2.0%). Treated and control sites were irradiated with VL+UVA1. Colorimetric and diffuse reflectance spectroscopy (DRS) assessments were performed immediately, 24 h and 7 days after irradiation. Subjects with SPT I-III had erythema that faded within 24 h, while SPT IV-VI had persistent pigmentation. SPT I-III demonstrated significantly less erythema at the 2% AO site while SPT IV-VI demonstrated significantly less immediate pigmentation at 2% AO site and less pigmentation (approaching significance, P = 0.07) on day 7 compared with control. Immunohistochemistry from biopsies of 2% AO and placebo at 24 h did not demonstrate a significant change in COX-2 or MART-1 for any SPT. There was a decrease in cyclin D1 for SPT IV-VI which was approaching significance (P = 0.06) but not for SPT I-III. The results indicate that topical AO inhibits erythema in SPT I-III and reduces pigmentation in SPT IV-VI caused by VL+UVA1. AO may help prevent worsening of pigmentary disorders and should be incorporated into photoprotection.
Collapse
Affiliation(s)
- Alexis B Lyons
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, MI
| | - Raheel Zubair
- Graduate Medical Education, Broward Health Medical Center, Fort Lauderdale, FL
| | - Indermeet Kohli
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, MI.,Department of Physics and Astronomy, Wayne State University, Detroit, MI
| | - Amanda F Nahhas
- Department of Dermatology, Beaumont-Farmington Hills, Farmington Hills, MI
| | - Taylor L Braunberger
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, MI
| | | | | | - Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, MI
| | - Iltefat H Hamzavi
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Hospital, Detroit, MI
| |
Collapse
|
12
|
Taieb C, Gayraud F, Dinet D, Sayag M. Interest in Micellar Solution to Reduce Unpleasant Skin Sensations. Clin Cosmet Investig Dermatol 2021; 14:1017-1022. [PMID: 34471366 PMCID: PMC8403560 DOI: 10.2147/ccid.s318802] [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: 05/05/2021] [Accepted: 07/02/2021] [Indexed: 12/04/2022]
Abstract
Introduction The results from the “Objectifs Peau” project showed that approximately 30% of the French population complains of an unpleasant skin sensation at least once a day. Itching was the most frequent complaint (32%), followed by tingling (18.9%) and burning sensation (5.6%), which impact an individual’s daily life. These sensations could be identified, as they were either isolated or associated with each other. The aim of this study was to evaluate the use of micellar solution to reduce these sensations, especially on sensitive skin. Methodology A questionnaire was administered at Day 0 (D0), D2, D14, and D28 using a mobile phone application to individuals applying micellar solution (Sensibio H2O, Laboratoire Bioderma, NAOS) who spontaneously used micellar solution for sensitive skin and/or spontaneously consulted a health professional. Itching, tightness, tingling and burning sensations were evaluated by means of frequencies (never, rarely, sometimes, often or constantly) at D0, D2, D14 and D28. Responses from the questionnaire were rated (never=0, rarely=1, sometimes=2, often=3 or constantly=4) and allowed us to obtain an overall “unpleasant sensations” score, where a higher score corresponded to a higher degree of unpleasant sensations. Results In total, 400 evaluable individuals participated in the study (97% female, average age 38.5±13 years, 82% reported sensitive skin). The “unpleasant sensations” score improved from D2 and continued significantly on D14 and D28. The improvement rates were 47.7%, 57.9% and 62.7% at D2, D14 and D28, respectively, compared to D0. The percentages of improvement at D2, D14 and D28 were 83.2% (95% CI: 79.26; 87.21), 87.54% (95% CI: 84.01; 91.06) and 90% (95% CI: 87.06; 92.94), respectively, compared to D0. Conclusion The improvement in the reduction of unpleasant sensations was observed as early as 2 days after using micellar solution and increased over time. The use of this type of micellar solution, especially on sensitive skin, and the guidance of health professionals (dermatologists and pharmacists) may help to reduce the impact of unpleasant skin sensations.
Collapse
Affiliation(s)
- Charles Taieb
- European Market Maintenance Assessment, Patients Priority Dpt, Fontenay sous-bois, France
| | | | | | | | | |
Collapse
|
13
|
Tang X, Dong Q, Li J, Li F, Michniak-Kohn BB, Zhao D, Ho CT, Huang Q. Anti-Melanogenic Mechanism of Tetrahydrocurcumin and Enhancing Its Topical Delivery Efficacy Using a Lecithin-Based Nanoemulsion. Pharmaceutics 2021; 13:pharmaceutics13081185. [PMID: 34452146 PMCID: PMC8397971 DOI: 10.3390/pharmaceutics13081185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/17/2022] Open
Abstract
Tetrahydrocurcumin (THC) has been well known for its superior antioxidant properties. Therefore, it is speculated that it might be effective to relieve oxidative stress-induced diseases, such as skin hyperpigmentation. In this work, an in vitro B16F10 melanoma cell model was used to study the impact of THC on the melanogenic process under stressed conditions. It was demonstrated that THC could effectively inhibit the α-MSH (melanocyte-stimulating hormone) induced melanin production in B16F10 melanoma cells and the expressions of three key enzymes involved with the biosynthetic process of melanin, tyrosinase (TYR), tyrosinase-related protein 1 (TRP-1), and tyrosinase-related protein 2 (TRP-2), were all significantly reduced. In addition, an in vitro human keratinocyte cell model was used to investigate the potential protective role of THC on H2O2-induced cytotoxicity. It was found that THC could prevent H2O2-induced oxidative stress based on the results of both the cell viability study and the intracellular ROS (reactive oxygen species) study assessed by the flow cytometry. Last, THC was formulated into a lecithin based nanoemulsion, and an in vitro Franz diffusion cell study using Strat-M® membrane concluded that the nanoemulsion could significantly enhance the membrane permeation compared to the unformatted THC suspension. This research demonstrated the anti-melanogenic benefits of THC on the melanoma and keratinocyte cell models and the topical delivery efficacy could be significantly enhanced using a lecithin based nanoemulsion.
Collapse
Affiliation(s)
- Xudong Tang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA; (X.T.); (Q.D.); (C.-T.H.)
| | - Qiaoru Dong
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA; (X.T.); (Q.D.); (C.-T.H.)
| | - Jun Li
- College of Food Science, South China Agricultural University, Guangzhou 510642, China;
| | - Fang Li
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China;
| | - Bozena B. Michniak-Kohn
- Center of Dermal Research (CDR) and Ernest Mario School of Pharmacy, Life Sciences Building, Rutgers University, Piscataway, NJ 08854, USA;
| | - Denggao Zhao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China;
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA; (X.T.); (Q.D.); (C.-T.H.)
| | - Qingrong Huang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA; (X.T.); (Q.D.); (C.-T.H.)
- Correspondence: ; Tel.: +1-848-932-5514
| |
Collapse
|
14
|
Effects of Resveratrol on Growth Performance, Intestinal Development, and Antioxidant Status of Broilers under Heat Stress. Animals (Basel) 2021; 11:ani11051427. [PMID: 34067505 PMCID: PMC8155960 DOI: 10.3390/ani11051427] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/02/2021] [Accepted: 05/06/2021] [Indexed: 12/19/2022] Open
Abstract
Simple Summary Broilers have unique physiological characteristics, no sweat glands and full of feathers, which makes it difficult to dissipate heat in high-temperature environments and is prone to heat stress (HS). HS has strong adverse effects on the meat production, growth performance, intestinal morphology, mortality and welfare of broilers, which can be alleviated by nutrition regulation. Resveratrol has been found to reduce the damage of HS on meat quality, immune and inflammatory response of broilers. However, there are few reports on the effects of resveratrol on the intestinal development and antioxidant capacity of broilers under HS. We demonstrated that resveratrol could improve the intestinal development and growth performance of broilers under HS. Besides, these findings suggest that resveratrol may offer an effective nutritional strategy to improve intestinal antioxidant function by regulating the expression of critical factors in the Nrf2 signaling pathway. Abstract The study investigated resveratrol’s effect on growth performance, intestinal development, and antioxidant capacity of broilers subjected to heat stress (HS). A total of 162 21-day-old male AA broilers were randomly divided into 3 treatment groups with 6 replicates of 9 birds each. The 3 treatment groups were as follows: the control (CON), in which broilers were housed at 22 ± 1 °C for 24 h day−1, and the HS and HS + resveratrol (400 mg/kg) groups, in which broilers were housed at 33 ± 1 °C for 10 h a day from 8:00 to 18:00 and 22 ± 1 °C for rest of the time. Results indicated that birds in the HS group exhibited lower (p < 0.05) final body weight (BW) and average daily gain (ADG) compared with birds in the CON group. HS birds also had lower (p < 0.05) relative jejunum weight, relative ileum and jejunum length, jejunal villus height, and villus height to crypt depth ratios than the CON group. The activities of glutathione peroxidase (GPX), glutathione S-transferase (GST), superoxide dismutase (SOD), and the mRNA levels of NF-E2-related factor 2 (Nrf2), SOD1, and GPX were also lower (p < 0.05) in the HS than CON group. The HS group had higher (p < 0.05) protein carbonyl (PC) contents and Kelch-like ECH-associated protein 1 (Keap1) mRNA levels. Compared with HS group, the HS + resveratrol group exhibited higher (p < 0.05) BW and ADG, relative jejunum weight, relative length of ileum, jejunal villus height, activities of GPX and GST, and mRNA levels of Nrf2 and SOD1, but they had lower (p < 0.05) PC content and Keap1 mRNA levels. In conclusion, resveratrol can improve the intestinal development and antioxidant function of broilers under HS, and therefore improve growth performance. The mechanism by which resveratrol enhances the intestinal antioxidant capacity is mediated by Nrf2 signaling pathway.
Collapse
|
15
|
Effect of memantine hydrochloride on cisplatin-induced neurobehavioral toxicity in mice. Acta Neurol Belg 2020; 120:71-82. [PMID: 31190140 DOI: 10.1007/s13760-019-01161-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 06/04/2019] [Indexed: 01/19/2023]
Abstract
Cisplatin is an anticancer agent widely used in the treatment of malignant tumors. One of the major adverse effects of cisplatin is its neurotoxicity. Memantine, an uncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, has been reported to have neuroprotective effects against neurological deficits. This study therefore investigated the possible protective role of memantine as an agent to minimize the neurobehavioral toxic side effects of cisplatin. Two different therapeutic doses of memantine (5 mg/kg) and (10 mg/kg) were orally administered for 30 days to 50 male BALB/c mice divided into 5 groups: G1: no treatment; G2: cisplatin treatment; G3: memantine treatment; G4: pretreatment of (5 mg/kg) memantine with cisplatin (4 mg/kg); G5: pretreatment of 10 mg/kg memantine with cisplatin (4 mg/kg). Weekly neurobehavioral investigations were conducted using the following battery of tests: open field activity, negative geotaxis, hole-board test, swimming test, and calculation of weight. At the end of the experimental period the mice were euthanized, and immunohistochemistry was then used to measure the expression scores of nicotinic acetylcholine receptors (nAChRs) in the muscles and brain. Results revealed that mice in G2 showed a significant decrease in the ability to perform neurobehavioral tasks. The mice in G5 exhibited a significantly improved ability on these tests, indicating a complete neurobehavioral protective effect, while the mice in G4 showed partial protection. The nAChRs score showed higher expression in the case of G2 in comparison with G3, G4, and G5. Weight loss was exhibited in G2, while in G3 and G1 these values were normal. A therapeutic dose of memantine 10 mg/kg yielded more protection than 5 mg/kg in the treatment of neuropathy; this highlights the importance of using memantine to decrease the main side effects of cisplatin.
Collapse
|
16
|
Richard F, Creusot T, Catoire S, Egles C, Ficheux H. Mechanisms of pollutant-induced toxicity in skin and detoxification: Anti-pollution strategies and perspectives for cosmetic products. ANNALES PHARMACEUTIQUES FRANÇAISES 2019; 77:446-459. [DOI: 10.1016/j.pharma.2019.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/01/2019] [Accepted: 07/05/2019] [Indexed: 10/25/2022]
|
17
|
Amente S, Di Palo G, Scala G, Castrignanò T, Gorini F, Cocozza S, Moresano A, Pucci P, Ma B, Stepanov I, Lania L, Pelicci PG, Dellino GI, Majello B. Genome-wide mapping of 8-oxo-7,8-dihydro-2'-deoxyguanosine reveals accumulation of oxidatively-generated damage at DNA replication origins within transcribed long genes of mammalian cells. Nucleic Acids Res 2019; 47:221-236. [PMID: 30462294 PMCID: PMC6326803 DOI: 10.1093/nar/gky1152] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 10/30/2018] [Indexed: 01/16/2023] Open
Abstract
8-Oxo-7,8-dihydro-2′-deoxyguanosine (8-oxodG) is one of the major DNA modifications and a potent pre-mutagenic lesion prone to mispair with 2′-deoxyadenosine (dA). Several thousand residues of 8-oxodG are constitutively generated in the genome of mammalian cells, but their genomic distribution has not yet been fully characterized. Here, by using OxiDIP-Seq, a highly sensitive methodology that uses immuno-precipitation with efficient anti–8-oxodG antibodies combined with high-throughput sequencing, we report the genome-wide distribution of 8-oxodG in human non-tumorigenic epithelial breast cells (MCF10A), and mouse embryonic fibroblasts (MEFs). OxiDIP-Seq revealed sites of 8-oxodG accumulation overlapping with γH2AX ChIP-Seq signals within the gene body of transcribed long genes, particularly at the DNA replication origins contained therein. We propose that the presence of persistent single-stranded DNA, as a consequence of transcription-replication clashes at these sites, determines local vulnerability to DNA oxidation and/or its slow repair. This oxidatively-generated damage, likely in combination with other kinds of lesion, might contribute to the formation of DNA double strand breaks and activation of DNA damage response.
Collapse
Affiliation(s)
- Stefano Amente
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - Giacomo Di Palo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - Giovanni Scala
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | | | - Francesca Gorini
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - Sergio Cocozza
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - Angela Moresano
- Department of Chemical Sciences, University of Naples 'Federico II', Naples, Italy
| | - Piero Pucci
- Department of Chemical Sciences, University of Naples 'Federico II', Naples, Italy.,CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Bin Ma
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Irina Stepanov
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - Luigi Lania
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples 'Federico II', Naples, Italy
| | - Pier Giuseppe Pelicci
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.,Department of Oncology and Hemato-oncology, University of Milano, Milan, Italy
| | - Gaetano Ivan Dellino
- Department of Experimental Oncology, European Institute of Oncology, Milan, Italy.,Department of Oncology and Hemato-oncology, University of Milano, Milan, Italy
| | - Barbara Majello
- Department of Biology, University of Naples 'Federico II', Naples, Italy
| |
Collapse
|
18
|
Zhang L, Wang X, Cueto R, Effi C, Zhang Y, Tan H, Qin X, Ji Y, Yang X, Wang H. Biochemical basis and metabolic interplay of redox regulation. Redox Biol 2019; 26:101284. [PMID: 31400697 PMCID: PMC6831867 DOI: 10.1016/j.redox.2019.101284] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 07/23/2019] [Accepted: 07/25/2019] [Indexed: 12/13/2022] Open
Abstract
Accumulated evidence strongly indicates that oxidative stress, characterized by an imbalance between reactive oxygen species (ROS) production and antioxidants in favor of oxidants, plays an important role in disease pathogenesis. However, ROS can act as signaling molecules and fulfill essential physiological functions at basal levels. Each ROS would be different in the extent to stimulate and contribute to different pathophysiological effects. Importantly, multiple ROS generators can be activated either concomitantly or sequentially by relevant signaling molecules for redox biological functions. Here, we summarized the current knowledge related to chemical and biochemical features of primary ROS species and corresponding antioxidants. Metabolic pathways of five major ROS generators and five ROS clearance systems were described, including their ROS products, specific ROS enriched tissue, cell and organelle, and relevant functional implications. We provided an overview of ROS generation and induction at different levels of metabolism. We classified 11 ROS species into three types based on their reactivity and target selectivity and presented ROS homeostasis and functional implications in pathological and physiological status. This article intensively reviewed and refined biochemical basis, metabolic signaling and regulation, functional insights, and provided guidance for the identification of novel therapeutic targets.
Collapse
Affiliation(s)
- Lixiao Zhang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Xianwei Wang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Ramón Cueto
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Comfort Effi
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Yuling Zhang
- Cardiovascular Medicine Department, Sun Yat-sen Memorial Hospital, China
| | - Hongmei Tan
- Department of Pathophysiology, Zhongshan School of Medicine, Sun Yat-sen University, 510080, China
| | - Xuebin Qin
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Yong Ji
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, China
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA; Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Hong Wang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, USA; Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA.
| |
Collapse
|
19
|
Kim HS, Kim YJ, Kim SJ, Kang DS, Lee TR, Shin DW, Kim HJ, Seo YR. Transcriptomic analysis of human dermal fibroblast cells reveals potential mechanisms underlying the protective effects of visible red light against damage from ultraviolet B light. J Dermatol Sci 2019; 94:276-283. [PMID: 30956030 DOI: 10.1016/j.jdermsci.2019.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND Ultraviolet B (UVB) radiation is a major cause of skin photodamage, including the damage associated with photodermatoses, aging, and cancer. Although many studies have shown that red light has photoprotective effects on skin, the mechanisms underlying these effects are still poorly understood. OBJECTIVE The aim of this study was to identify the photoprotective effects of visible red light against UVB-induced skin damage in normal human dermal fibroblast cells using a transcriptomic approach. METHODS Next-generation sequencing-based transcriptomic analyses were used to profile transcriptomic alterations and identify genes that are differentially expressed by visible red light and by UVB exposure. To understand the biological networks among identified genes, a literature-based biological pathway analysis was performed. Quantitative real-time polymerase chain reaction assays were used for mRNA-level validation of selected key genes. RESULTS We observed that visible red light contributes to skin cell protection against UVB by modulating gene expression that enhances the adaptive response to redox and inflammatory balancing and by upregulating genes involved in DNA excision repair processes. We also identified that several key genes in the red light-induced biological network were differentially regulated. CONCLUSIONS Visible red light enhanced the UVB-protective effects in normal human skin cells via the transcriptomic modulation of genes involved in cell-protective processes. Our findings from this next-generation sequencing analysis may lead to a better understanding of the cytoprotective effects of visible red light and provide direction for further molecular or mechanistic studies.
Collapse
Affiliation(s)
- Hyun Soo Kim
- Department of Life Science, Institute of Environmental Medicine, Dongguk University Biomedi Campus, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Yeo Jin Kim
- Department of Life Science, Institute of Environmental Medicine, Dongguk University Biomedi Campus, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Su Ji Kim
- Department of Life Science, Institute of Environmental Medicine, Dongguk University Biomedi Campus, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Doo Seok Kang
- Department of Life Science, Institute of Environmental Medicine, Dongguk University Biomedi Campus, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Tae Ryong Lee
- Bioscience Research Institute, Amorepacific Corporation R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17074, Republic of Korea
| | - Dong Wook Shin
- College of Biomedical & Health Science, Konkuk University, Chungju, 27478, Korea.
| | - Hyoung-June Kim
- Bioscience Research Institute, Amorepacific Corporation R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17074, Republic of Korea
| | - Young Rok Seo
- Department of Life Science, Institute of Environmental Medicine, Dongguk University Biomedi Campus, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| |
Collapse
|
20
|
Cadet J, Douki T. Formation of UV-induced DNA damage contributing to skin cancer development. Photochem Photobiol Sci 2018; 17:1816-1841. [PMID: 29405222 DOI: 10.1039/c7pp00395a] [Citation(s) in RCA: 220] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
UV-induced DNA damage plays a key role in the initiation phase of skin cancer. When left unrepaired or when damaged cells are not eliminated by apoptosis, DNA lesions express their mutagneic properties, leading to the activation of proto-oncogene or the inactivation of tumor suppression genes. The chemical nature and the amount of DNA damage strongly depend on the wavelength of the incident photons. The most energetic part of the solar spectrum at the Earth's surface (UVB, 280-320 nm) leads to the formation of cyclobutane pyrimidine dimers (CPDs) and pyrimidine (6-4) pyrimidone photoproducts (64PPs). Less energetic but 20-times more intense UVA (320-400 nm) also induces the formation of CPDs together with a wide variety of oxidatively generated lesions such as single strand breaks and oxidized bases. Among those, 8-oxo-7,8-dihydroguanine (8-oxoGua) is the most frequent since it can be produced by several mechanisms. Data available on the respective yield of DNA photoproducts in cells and skin show that exposure to sunlight mostly induces pyrimidine dimers, which explains the mutational signature found in skin tumors, with lower amounts of 8-oxoGua and strand breaks. The present review aims at describing the basic photochemistry of DNA and discussing the quantitative formation of the different UV-induced DNA lesions reported in the literature. Additional information on mutagenesis, repair and photoprotection is briefly provided.
Collapse
Affiliation(s)
- Jean Cadet
- Département de Médecine Nucléaire et Radiobiologie, Faculté de Médecine, 3001 12e Avenue Nord, Université de Sherbrooke, Sherbrooke, Québec JIH 5N4, Canada.
| | | |
Collapse
|
21
|
Khoshakhlagh P, Bowser DA, Brown JQ, Moore MJ. Comparison of visible and UVA phototoxicity in neural culture systems micropatterned with digital projection photolithography. J Biomed Mater Res A 2018; 107:134-144. [PMID: 30358101 DOI: 10.1002/jbm.a.36540] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/02/2018] [Accepted: 08/16/2018] [Indexed: 01/12/2023]
Abstract
Photopolymerization provides a favorable method for hydrogel formation due to its simplicity, convenience, and versatility. However, the light exposure required to initiate photopolymerization is known to have a cytotoxic effect on encapsulated cells. Here, a 3D in vitro model of the nervous system microenvironment, micropatterned through the use of digital projection photolithography using a single hydrogel formulation that cross-links similarly under ultraviolet A (UVA, 315-400 nm) and visible light (400-700 nm) exposure, is presented. This setup allowed for the investigation of neuronal responses to different light wavelengths and exposure times during photoencapsulation, while ruling out effects due to the hydrogel formulation or photoinitiators used. Cellular studies-including neurite viability, DNA fragmentation, and neurite outgrowth for both UVA and visible light irradiation, the most common spectra used in biological photomicropatterning applications-were performed to assess the effect of light source on neuronal cultures. These studies indicated that while cell death occurs after exposure to either spectrum, visible light was less phototoxic than UVA, when using comparable levels of irradiation, and interestingly, glial cells were more susceptible to phototoxicity than neuronal cells. Thus, while utilizing visible light for micropatterning and cell encapsulation for nervous system applications is beneficial, it is helpful to keep the light exposure low to ensure optimal neuronal survival and growth. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 134-144, 2019.
Collapse
Affiliation(s)
| | - Devon A Bowser
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana.,Bioinnovation Program, Tulane University, New Orleans, Louisiana
| | - J Quincy Brown
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana
| | - Michael J Moore
- Department of Biomedical Engineering, Tulane University, New Orleans, Louisiana.,Tulane Brain Institute, Tulane University, New Orleans, Louisiana.,AxoSim Inc., New Orleans, Louisiana
| |
Collapse
|
22
|
André P, Villain F. Free radical scavenging properties of mannitol and its role as a constituent of hyaluronic acid fillers: a literature review. Int J Cosmet Sci 2017; 39:355-360. [PMID: 28027572 DOI: 10.1111/ics.12386] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/21/2016] [Indexed: 12/01/2022]
Abstract
Mannitol has both hydrating and antioxidant properties that make it an ideal excipient for use with hyaluronic acid (HA) fillers. This review examines the role of reactive oxygen species in the ageing process and their effects on both endogenous HA and HA products developed for aesthetic use. Evidence is presented to show that the free radical scavenging properties of mannitol provide it with a two-fold mechanism of action when combined with HA fillers: reducing the inflammation and swelling associated with the injection procedure itself, and preventing the degradation of the injected HA by free radicals. Mannitol also has a long- and well-established safety profile in both the food and pharmaceutical industry. Having established the rationale for using mannitol in combination with an HA filler, the products using this strategy are then reviewed. The addition of mannitol to HA fillers is a viable and safe option for improving both short- and long-term HA aesthetic effects.
Collapse
Affiliation(s)
- P André
- Paris-Université Laser Skin Clinic, 157, rue de l'Université, 75007, Paris, France
| | - F Villain
- Merz Pharmaceuticals GmbH, 100 Eckenheimer Landstrasse, 60318, Frankfurt am Main, Germany
| |
Collapse
|
23
|
McKenzie K, Maclean M, Grant MH, Ramakrishnan P, MacGregor SJ, Anderson JG. The effects of 405 nm light on bacterial membrane integrity determined by salt and bile tolerance assays, leakage of UV-absorbing material and SYTOX green labelling. MICROBIOLOGY (READING, ENGLAND) 2016; 162:1680-1688. [PMID: 27499074 PMCID: PMC5068139 DOI: 10.1099/mic.0.000350] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 08/05/2016] [Indexed: 12/22/2022]
Abstract
Bacterial inactivation by 405 nm light is accredited to the photoexcitation of intracellular porphyrin molecules resulting in energy transfer and the generation of reactive oxygen species that impart cellular oxidative damage. The specific mechanism of cellular damage, however, is not fully understood. Previous work has suggested that destruction of nucleic acids may be responsible for inactivation; however, microscopic imaging has suggested membrane damage as a major constituent of cellular inactivation. This study investigates the membrane integrity of Escherichia coli and Staphylococcus aureus exposed to 405 nm light. Results indicated membrane damage to both species, with loss of salt and bile tolerance by S. aureus and E. coli, respectively, consistent with reduced membrane integrity. Increased nucleic acid release was also demonstrated in 405 nm light-exposed cells, with up to 50 % increase in DNA concentration into the extracellular media in the case of both organisms. SYTOX green fluorometric analysis, however, demonstrated contradictory results between the two test species. With E. coli, increasing permeation of SYTOX green was observed following increased exposure, with >500 % increase in fluorescence, whereas no increase was observed with S. aureus. Overall, this study has provided good evidence that 405 nm light exposure causes loss of bacterial membrane integrity in E. coli, but the results with S. aureus are more difficult to explain. Further work is required to gain greater understanding of the inactivation mechanism in different bacterial species, as there are likely to be other targets within the cell that are also impaired by the oxidative damage from photo-generated reactive oxygen species.
Collapse
Affiliation(s)
- Karen McKenzie
- Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST), University of Strathclyde, 204 George Street, Glasgow, Scotland G1 1XW, UK
| | - Michelle Maclean
- Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST), University of Strathclyde, 204 George Street, Glasgow, Scotland G1 1XW, UK
- Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow, Scotland G4 0NW, UK
| | - M. Helen Grant
- Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow, Scotland G4 0NW, UK
| | - Praveen Ramakrishnan
- Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST), University of Strathclyde, 204 George Street, Glasgow, Scotland G1 1XW, UK
- Department of Biomedical Engineering, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow, Scotland G4 0NW, UK
| | - Scott J. MacGregor
- Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST), University of Strathclyde, 204 George Street, Glasgow, Scotland G1 1XW, UK
| | - John G. Anderson
- Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST), University of Strathclyde, 204 George Street, Glasgow, Scotland G1 1XW, UK
| |
Collapse
|
24
|
Trompezinski S, Weber S, Cadars B, Larue F, Ardiet N, Chavagnac-Bonneville M, Sayag M, Jourdan E. Assessment of a new biological complex efficacy on dysseborrhea, inflammation, and Propionibacterium acnes proliferation. Clin Cosmet Investig Dermatol 2016; 9:233-9. [PMID: 27621660 PMCID: PMC5012630 DOI: 10.2147/ccid.s110655] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Acne vulgaris is a common chronic inflammatory disease of the pilosebaceous unit triggered by Propionibacterium acnes. A bakuchiol, Ginkgo biloba extract, and mannitol (BGM) complex has been developed to provide patients with acne with a specific dermocosmetic to be used adjunctively with conventional treatments. OBJECTIVE The aim of these studies was to assess the antibacterial, anti-inflammatory, and antioxidative potential of BGM complex and its individual compounds as well as its impact on sebum composition. METHODS The antibacterial, anti-inflammatory, and antioxidative potential of BGM complex and its compounds was assessed through in vitro, ex vivo, and clinical studies. The clinical benefit of BGM complex formulated in a cream was assessed in subjects prone to acne through sebum composition analysis and photometric assessments. RESULTS Results from the studies showed that the BGM complex has significant antibacterial, anti-inflammatory, and antioxidative properties. At similar concentrations, bakuchiol has up to twice the antioxidative potential than vitamin E. In subjects, BGM complex regulated the sebum composition in acne patients by increasing the level of sapienic and linolenic acid and reducing the level of oleic acid. The reduced number of porphyrins on the skin surface showed that it is also effective against P. acnes. CONCLUSION BGM complex provides a complete adjunctive care in patients with acne by targeting etiopathogenic factors of acne: dysseborrhea, inflammation, and P. acnes proliferation.
Collapse
Affiliation(s)
| | | | - Benoît Cadars
- Direction Scientifique Bioderma (NAOS), Lyon, France
| | | | | | | | - Michèle Sayag
- Direction Scientifique Bioderma (NAOS), Lyon, France
| | - Eric Jourdan
- Direction Scientifique Bioderma (NAOS), Lyon, France
| |
Collapse
|
25
|
|
26
|
Sticozzi C, Cervellati F, Muresan XM, Cervellati C, Valacchi G. Resveratrol prevents cigarette smoke-induced keratinocytes damage. Food Funct 2015; 5:2348-56. [PMID: 25088477 DOI: 10.1039/c4fo00407h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The plant polyphenol, resveratrol (Resv, 3,4,5-trihydroxystilbene), naturally occurring in a number of fruits and other food products, has been extensively studied over the last two decades for its beneficial properties. Recently, its possible topical use in ameliorating skin conditions has also been proposed; however, its role in preventing cigarette smoke (CS)-induced keratinocyte damage has not been investigated yet. Because of its peculiar location, cutaneous tissue is constantly exposed to several environmental stressors, such as CS. Many compounds presented in CS, have been shown to induce, directly or indirectly, cellular oxidative stress (OS) and inflammation via the production of ROS and lipid peroxidation compounds, among which 4HNE has been shown to be one of the most reactive. In this study, we have shown that resveratrol (at a dose of 10 μM) can decrease CS-induced ROS and carbonyl formation in human keratinocytes. In addition, pre-treatment with resveratrol prevented the induction of TRPA1 expression (mRNA and protein levels), a known receptor involved in cellular differentiation and inflammation, which has been recently shown to be activated by 4HNE. Finally, in keratinocytes, resveratrol could increase the expression of MsrA, enzyme involved in cell defence against oxidative protein damage. The present study further confirms the idea that the topical use of resveratrol can provide a good defence against CS-induced skin damage.
Collapse
Affiliation(s)
- Claudia Sticozzi
- Department of Life Sciences and Biotechnology, University of Ferrara, 44121 Ferrara, Italy.
| | | | | | | | | |
Collapse
|
27
|
Kanao R, Yokoi M, Ohkumo T, Sakurai Y, Dotsu K, Kura S, Nakatsu Y, Tsuzuki T, Masutani C, Hanaoka F. UV-induced mutations in epidermal cells of mice defective in DNA polymerase η and/or ι. DNA Repair (Amst) 2015; 29:139-46. [PMID: 25733082 DOI: 10.1016/j.dnarep.2015.02.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 02/05/2023]
Abstract
Xeroderma pigmentosum variant (XP-V) is a human rare inherited recessive disease, predisposed to sunlight-induced skin cancer, which is caused by deficiency in DNA polymerase η (Polη). Polη catalyzes accurate translesion synthesis (TLS) past pyrimidine dimers, the most prominent UV-induced lesions. DNA polymerase ι (Polι) is a paralog of Polη that has been suggested to participate in TLS past UV-induced lesions, but its function in vivo remains uncertain. We have previously reported that Polη-deficient and Polη/Polι double-deficient mice showed increased susceptibility to UV-induced carcinogenesis. Here, we investigated UV-induced mutation frequencies and spectra in the epidermal cells of Polη- and/or Polι-deficient mice. While Polη-deficient mice showed significantly higher UV-induced mutation frequencies than wild-type mice, Polι deficiency did not influence the frequencies in the presence of Polη. Interestingly, the frequencies in Polη/Polι double-deficient mice were statistically lower than those in Polη-deficient mice, although they were still higher than those of wild-type mice. Sequence analysis revealed that most of the UV-induced mutations in Polη-deficient and Polη/Polι double-deficient mice were base substitutions at dipyrimidine sites. An increase in UV-induced mutations at both G:C and A:T pairs associated with Polη deficiency suggests that Polη contributes to accurate TLS past both thymine- and cytosine-containing dimers in vivo. A significant decrease in G:C to A:T transition in Polη/Polι double-deficient mice when compared with Polη-deficient mice suggests that Polι is involved in error-prone TLS past cytosine-containing dimers when Polη is inactivated.
Collapse
Affiliation(s)
- Rie Kanao
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan; Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan; Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Masayuki Yokoi
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan; Solution Oriented Research for Science and Technology, Japan Science and Technology Agency, Tokyo, Japan
| | - Tsuyoshi Ohkumo
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yasutaka Sakurai
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Kantaro Dotsu
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Shinobu Kura
- Faculty of Medical Sciences, Kyushu University, 3-1-1 Higashi-ku, Maidashi, Fukuoka 812-8582, Japan
| | - Yoshimichi Nakatsu
- Faculty of Medical Sciences, Kyushu University, 3-1-1 Higashi-ku, Maidashi, Fukuoka 812-8582, Japan
| | - Teruhisa Tsuzuki
- Faculty of Medical Sciences, Kyushu University, 3-1-1 Higashi-ku, Maidashi, Fukuoka 812-8582, Japan
| | - Chikahide Masutani
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan; Solution Oriented Research for Science and Technology, Japan Science and Technology Agency, Tokyo, Japan
| | - Fumio Hanaoka
- Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan; Faculty of Science, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan; Solution Oriented Research for Science and Technology, Japan Science and Technology Agency, Tokyo, Japan.
| |
Collapse
|
28
|
Hosseini M, Ezzedine K, Taieb A, Rezvani HR. Oxidative and Energy Metabolism as Potential Clues for Clinical Heterogeneity in Nucleotide Excision Repair Disorders. J Invest Dermatol 2015; 135:341-351. [DOI: 10.1038/jid.2014.365] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 08/01/2013] [Accepted: 08/04/2014] [Indexed: 12/23/2022]
|
29
|
Cadet J, Douki T, Ravanat JL. Oxidatively generated damage to cellular DNA by UVB and UVA radiation. Photochem Photobiol 2014; 91:140-55. [PMID: 25327445 DOI: 10.1111/php.12368] [Citation(s) in RCA: 197] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Accepted: 10/09/2014] [Indexed: 12/13/2022]
Abstract
This review article focuses on a critical survey of the main available information on the UVB and UVA oxidative reactions to cellular DNA as the result of direct interactions of UV photons, photosensitized pathways and biochemical responses including inflammation and bystander effects. UVA radiation appears to be much more efficient than UVB in inducing oxidatively generated damage to the bases and 2-deoxyribose moieties of DNA in isolated cells and skin. The UVA-induced generation of 8-oxo-7,8-dihydroguanine is mostly rationalized in terms of selective guanine oxidation by singlet oxygen generated through type II photosensitization mechanism. In addition, hydroxyl radical whose formation may be accounted for by metal-catalyzed Haber-Weiss reactions subsequent to the initial generation of superoxide anion radical contributes in a minor way to the DNA degradation. This leads to the formation of both oxidized purine and pyrimidine bases together with DNA single-strand breaks at the exclusion, however, of direct double-strand breaks. No evidence has been provided so far for the implication of delayed oxidative degradation pathways of cellular DNA. In that respect putative characteristic UVA-induced DNA damage could include single and more complex lesions arising from one-electron oxidation of the guanine base together with aldehyde adducts to amino-substituted nucleobases.
Collapse
Affiliation(s)
- Jean Cadet
- University Grenoble Alpes, INAC, Grenoble, France; CEA, INAC, Grenoble, France; Département de Médecine Nucléaire et Radiobiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada
| | | | | |
Collapse
|
30
|
Pospíšil P, Prasad A, Rác M. Role of reactive oxygen species in ultra-weak photon emission in biological systems. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 139:11-23. [PMID: 24674863 DOI: 10.1016/j.jphotobiol.2014.02.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 02/07/2014] [Accepted: 02/11/2014] [Indexed: 10/25/2022]
Abstract
Ultra-weak photon emission originates from the relaxation of electronically excited species formed in the biological systems such as microorganisms, plants and animals including humans. Electronically excited species are formed during the oxidative metabolic processes and the oxidative stress reactions that are associated with the production of reactive oxygen species (ROS). The review attempts to overview experimental evidence on the involvement of superoxide anion radical, hydrogen peroxide, hydroxyl radical and singlet oxygen in both the spontaneous and the stress-induced ultra-weak photon emission. The oxidation of biomolecules comprising either the hydrogen abstraction by superoxide anion and hydroxyl radicals or the cycloaddition of singlet oxygen initiate a cascade of oxidative reactions that lead to the formation of electronically excited species such as triplet excited carbonyl, excited pigments and singlet oxygen. The photon emission of these electronically excited species is in the following regions of the spectrum (1) triplet excited carbonyl in the near UVA and blue-green areas (350-550nm), (2) singlet and triplet excited pigments in the green-red (550-750nm) and red-near IR (750-1000nm) areas, respectively and (3) singlet oxygen in the red (634 and 703nm) and near IR (1270nm) areas. The understanding of the role of ROS in photon emission allows us to use the spontaneous and stress-induced ultra-weak photon emission as a non-invasive tool for monitoring of the oxidative metabolic processes and the oxidative stress reactions in biological systems in vivo, respectively.
Collapse
Affiliation(s)
- Pavel Pospíšil
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic.
| | - Ankush Prasad
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Marek Rác
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| |
Collapse
|
31
|
Sundari J, Selvaraj R, Rajendra Prasad N, Elumalai R. Jatropha curcas leaf and bark fractions protect against ultraviolet radiation-B induced DNA damage in human peripheral blood lymphocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:875-882. [PMID: 23995553 DOI: 10.1016/j.etap.2013.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 02/04/2013] [Accepted: 08/01/2013] [Indexed: 06/02/2023]
Abstract
The present study is conducted to investigate the antioxidant potential of Jatropha curcas root bark extract (RB4 fraction) and leaf extract (L1 fraction), and to study their effects on UVB-radiation-induced DNA damage in cultured human blood lymphocytes. In this study, J. curcas showed strong antioxidant property in different free radical scavenging systems. Both the fractions effectively scavenged hydroxyl (OH), superoxide anion (O₂(·-)), 1,1-diphenyl-2-picrylhydrazyl (DPPH·) and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid radical cation (ABTS(·+)) in a concentration-dependent manner. The IC₅₀ (Inhibitory Concentration 50) values of J. curcas fractions were compared to standard ascorbic acid used in this study. The antioxidant potential of a compound was directly proportional to the photoprotective effect. In this study, human peripheral blood lymphocytes (HPBL) were exposed to UVB-radiation and there was an increase in comet attributes (% tail DNA, tail length, tail movement and Olive tail moment). Jatropha curcas RB4 fraction and L1 fraction treatment before UVB-irradiation significantly decreased the % tail DNA, tail length, tail moment and Olive tail moment in irradiated HPBL. These results suggested that J. curcas exhibited strong antioxidant property and RB4 and L1 fractions protected UVB-radiation-induced DNA damage in HPBL.
Collapse
Affiliation(s)
- J Sundari
- Department of Botany, Faculty of Science, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | | | | | | |
Collapse
|
32
|
Surjana D, Halliday GM, Damian DL. Nicotinamide enhances repair of ultraviolet radiation-induced DNA damage in human keratinocytes and ex vivo skin. Carcinogenesis 2013; 34:1144-9. [PMID: 23349012 DOI: 10.1093/carcin/bgt017] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Nicotinamide (vitamin B3) protects from ultraviolet (UV) radiation-induced carcinogenesis in mice and from UV-induced immunosuppression in mice and humans. Recent double-blinded randomized controlled Phase 2 studies in heavily sun-damaged individuals have shown that oral nicotinamide significantly reduces premalignant actinic keratoses, and may reduce new non-melanoma skin cancers. Nicotinamide is a precursor of nicotinamide adenine dinucleotide (NAD(+)), an essential coenzyme in adenosine triphosphate (ATP) production. Previously, we showed that nicotinamide prevents UV-induced ATP decline in HaCaT keratinocytes. Energy-dependent DNA repair is a key determinant of cellular survival after exposure to DNA-damaging agents such as UV radiation. Hence, in this study we investigated whether nicotinamide protection from cellular energy loss influences DNA repair. We treated HaCaT keratinocytes with nicotinamide and exposed them to low-dose solar-simulated UV (ssUV). Excision repair was quantified using an assay of unscheduled DNA synthesis. Nicotinamide increased both the proportion of cells undergoing excision repair and the repair rate in each cell. We then investigated ssUV-induced cyclobutane pyrimidine dimers (CPDs) and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8oxoG) formation and repair by comet assay in keratinocytes and with immunohistochemistry in human skin. Nicotinamide reduced CPDs and 8oxoG in both models and the reduction appeared to be due to enhancement of DNA repair. These results show that nicotinamide enhances two different pathways for repair of UV-induced photolesions, supporting nicotinamide's potential as an inexpensive, convenient and non-toxic agent for skin cancer chemoprevention.
Collapse
Affiliation(s)
- Devita Surjana
- Department of Dermatology, Sydney Cancer Centre, Bosch Institute, University of Sydney at Royal Prince Alfred Hospital, Camperdown, Sydney, NSW 2006, Australia
| | | | | |
Collapse
|
33
|
Prasad KS, Patel H, Patel T, Patel K, Selvaraj K. Biosynthesis of Se nanoparticles and its effect on UV-induced DNA damage. Colloids Surf B Biointerfaces 2012. [PMID: 23201746 DOI: 10.1016/j.colsurfb.2012.10.029] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This paper reports, an environmentally benign procedure of synthesis and characterizations of selenium nanoparticles and their protective effect against UV-induced DNA damage activities. An aqueous leaf extract of lemon plant was used as a precursor for synthesis of colloidal selenium nanoparticles. Resulting nanoparticles were characterized using UV-vis spectrophotometer, photoluminescence, TEM, EDAX, FT-IR and XRD, respectively. Selenium colloidal solution exhibited an absorption maximum at 395 nm and produced an emission maximum at 525 nm. Transmission electron microscopy followed by selected area electron diffraction pattern analysis indicated the formation of spherical, polydispersed, crystalline, selenium nanoparticles of diameter ranging from (∼60 to 80 nm). X-ray diffraction studies showed the formation of 111, 200 and 220 planes of face-centered cubic (fcc) selenium. EDAX analysis confirmed the presence of selenium in nanosphere. Fourier transformed infrared spectroscopic investigation reveled the involvement of carboxyl (−C=O), hydroxyl (−OH), amine (−NH) functional group of lemon plant extract in preparation of selenium nanoparticles. MTT assay as well single cell gel electrophoresis assay or comet assay revealed that synthesized selenium nanoparticles, caused less cell death of lymphocytes and prevented DNA damage, when cells were exposed to UVB. The fluorescent property of selenium nanoparticles can be used as diagnostic agent. Further, their anti DNA damaging property can be investigated as a chemotherapeutic agent in cancer therapy.
Collapse
Affiliation(s)
- Kumar Suranjit Prasad
- Ashok & Rita Patel Institute of Integrated Study & Research in Biotechnology and Allied Sciences, New Vallabh Vidyanagar, Anand, Gujarat 388121, India.
| | | | | | | | | |
Collapse
|
34
|
Dong K, Pelle E, Yarosh DB, Pernodet N. Sirtuin 4 identification in normal human epidermal keratinocytes and its relation to sirtuin 3 and energy metabolism under normal conditions and UVB-induced stress. Exp Dermatol 2012; 21:231-3. [PMID: 22379973 DOI: 10.1111/j.1600-0625.2011.01439.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sirtuins (SIRT) are NAD(+) -dependent deacetylases and ADP-ribosyltransferases that play a critical role in metabolism and epigenetics. SIRT3 and SIRT4 are of particular interest because they are localized in the mitochondria where energy is generated and their expression is inversely proportional to each other. Here, we report data, for the first time, demonstrating the presence of SIRT4 in normal human epidermal keratinocytes (NHEK) and confirm that its expression is inversely related to SIRT3 in these cells and that they follow a temporal cycle. Further, UVB radiation modified their expression, as well as ATP and H2 O2 levels. These deviations from the normal sirtuin cycles after UVB exposure can be an epigenetic indicator of lower metabolism levels.
Collapse
|
35
|
Ido Y, Duranton A, Lan F, Cacicedo JM, Chen TC, Breton L, Ruderman NB. Acute activation of AMP-activated protein kinase prevents H2O2-induced premature senescence in primary human keratinocytes. PLoS One 2012; 7:e35092. [PMID: 22514710 PMCID: PMC3325987 DOI: 10.1371/journal.pone.0035092] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Accepted: 03/13/2012] [Indexed: 01/06/2023] Open
Abstract
We investigated the effects of AMPK on H2O2-induced premature senescence in primary human keratinocytes. Incubation with 50 µM H2O2 for 2 h resulted in premature senescence with characteristic increases in senescence-associated ß-galactosidase (SA-gal) staining 3 days later and no changes in AMPK or p38 MAPK activity. The increase in SA-gal staining was preceded by increases in both p53 phosphorylation (S15) (1 h) and transactivation (6 h) and the abundance of the cyclin inhibitor p21CIP1 (16 h). Incubation with AICAR or resveratrol, both of which activated AMPK, prevented the H2O2-induced increases in both SA-Gal staining and p21 abundance. In addition, AICAR diminished the increase in p53 transactivation. The decreases in SA-Gal expression induced by resveratrol and AICAR were prevented by the pharmacological AMPK inhibitor Compound C, expression of a DN-AMPK or AMPK knock-down with shRNA. Likewise, both knockdown of AMPK and expression of DN-AMPK were sufficient to induce senescence, even in the absence of exogenous H2O2. As reported by others, we found that AMPK activation by itself increased p53 phosphorylation at S15 in embryonic fibroblasts (MEF), whereas under the same conditions it decreased p53 phosphorylation in the keratinocytes, human aortic endothelial cells, and human HT1080 fibrosarcoma cells. In conclusion, the results indicate that H2O2 at low concentrations causes premature senescence in human keratinocytes by activating p53-p21CIP1 signaling and that these effects can be prevented by acute AMPK activation and enhanced by AMPK downregulation. They also suggest that this action of AMPK may be cell or context-specific.
Collapse
Affiliation(s)
- Yasuo Ido
- Section of Endocrinology and Diabetes Research Unit, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail: (NR); (YI)
| | | | - Fan Lan
- Section of Endocrinology and Diabetes Research Unit, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Jose M. Cacicedo
- Section of Endocrinology and Diabetes Research Unit, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Tai C. Chen
- Section of Endocrinology and Diabetes Research Unit, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Lionel Breton
- L'OREAL Recherche, Centre Charles Zviak, Clichy, France
| | - Neil B. Ruderman
- Section of Endocrinology and Diabetes Research Unit, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail: (NR); (YI)
| |
Collapse
|
36
|
Liebel F, Kaur S, Ruvolo E, Kollias N, Southall MD. Irradiation of skin with visible light induces reactive oxygen species and matrix-degrading enzymes. J Invest Dermatol 2012; 132:1901-7. [PMID: 22318388 DOI: 10.1038/jid.2011.476] [Citation(s) in RCA: 259] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Daily skin exposure to solar radiation causes cells to produce reactive oxygen species (ROS), which are a primary factor in skin damage. Although the contribution of the UV component to skin damage has been established, few studies have examined the effects of non-UV solar radiation on skin physiology. Solar radiation comprises <10% of UV, and thus the purpose of this study was to examine the physiological response of skin to visible light (400-700 nm). Irradiation of human skin equivalents with visible light induced production of ROS, proinflammatory cytokines, and matrix metalloproteinase (MMP)-1 expression. Commercially available sunscreens were found to have minimal effects on reducing visible light-induced ROS, suggesting that UVA/UVB sunscreens do not protect the skin from visible light-induced responses. Using clinical models to assess the generation of free radicals from oxidative stress, higher levels of free radical activity were found after visible light exposure. Pretreatment with a photostable UVA/UVB sunscreen containing an antioxidant combination significantly reduced the production of ROS, cytokines, and MMP expression in vitro, and decreased oxidative stress in human subjects after visible light irradiation. Taken together, these findings suggest that other portions of the solar spectrum aside from UV, particularly visible light, may also contribute to signs of premature photoaging in skin.
Collapse
Affiliation(s)
- Frank Liebel
- Preclinical Pharmacology, Johnson & Johnson Skin Research Center, CPPW, a Unit of Johnson & Johnson Consumer Companies, Skillman, New Jersey, USA
| | | | | | | | | |
Collapse
|
37
|
Pelle E, Jian J, Declercq L, Dong K, Yang Q, Pourzand C, Maes D, Pernodet N, Yarosh DB, Huang X. Protection against ultraviolet A-induced oxidative damage in normal human epidermal keratinocytes under post-menopausal conditions by an ultraviolet A-activated caged-iron chelator: a pilot study. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2012; 27:231-5. [PMID: 21950626 DOI: 10.1111/j.1600-0781.2011.00604.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND/PURPOSE Human skin is constantly exposed to ultraviolet A (UVA), which can generate reactive oxygen species and cause iron release from ferritin, leading to oxidative damage in biomolecules. This is particularly true in post-menopausal skin due to an increase in iron as a result of menopause. As iron is generally released through desquamation, the skin becomes a main portal for the release of excess iron in this age group. In the present study, we examined a strategy for controlling UVA- and iron-induced oxidative stress in skin using a keratinocyte post-menopausal cellular model system. METHODS Keratinocytes that had been cultured under normal or high-iron, low-estrogen conditions were treated with (2-nitrophenyl) ethyl pyridoxal isonicotinoyl hydrazone (2-PNE-PIH). 2-PNE-PIH is a caged-iron chelator that does not normally bind iron but can be activated by UVA radiation to bind iron. Following incubation with 2-PNE-PIH, the cells were exposed to 5 J/cm² UVA and then measured for changes in lipid peroxidation and ferritin levels. RESULTS 2-PNE-PIH protected keratinocytes against UVA-induced lipid peroxidation and ferritin depletion. Further, 2-PNE-PIH was neither cytotoxic nor did it alter iron metabolism. CONCLUSION 2-PNE-PIH may be a useful deterrent against UVA-induced oxidative stress in post-menopausal women.
Collapse
Affiliation(s)
- Edward Pelle
- Department of Environmental Medicine, New York University School of Medicine, New York, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Cornelissen C, Brans R, Czaja K, Skazik C, Marquardt Y, Zwadlo-Klarwasser G, Kim A, Bickers D, Lüscher-Firzlaff J, Lüscher B, Baron J. Ultraviolet B radiation and reactive oxygen species modulate interleukin-31 expression in T lymphocytes, monocytes and dendritic cells. Br J Dermatol 2011; 165:966-75. [DOI: 10.1111/j.1365-2133.2011.10487.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
39
|
Jung I, Kim TY, Kim-Ha J. Identification of Drosophila
SOD3 and its protective role against phototoxic damage to cells. FEBS Lett 2011; 585:1973-8. [DOI: 10.1016/j.febslet.2011.05.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 05/12/2011] [Accepted: 05/13/2011] [Indexed: 11/29/2022]
|
40
|
Saitoh Y, Miyanishi A, Mizuno H, Kato S, Aoshima H, Kokubo K, Miwa N. Super-highly hydroxylated fullerene derivative protects human keratinocytes from UV-induced cell injuries together with the decreases in intracellular ROS generation and DNA damages. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2010; 102:69-76. [PMID: 20943412 DOI: 10.1016/j.jphotobiol.2010.09.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 09/10/2010] [Accepted: 09/14/2010] [Indexed: 12/25/2022]
Abstract
Polyhydroxylated fullerenes (fullerenols: C(60)(OH)(n)) are known as the major water-soluble fullerene derivatives which possess particular significance as free radical scavengers or antioxidants in biological systems. Recently, the novel polyhydroxylated fullerene (C(60) (OH)(44)·8H(2)O: SHH-F) was successfully synthesized. In the present study, we investigated the radical-scavenging effects and cytoprotective effects of three types of fullerenols (C(60)(OH)(6-12): LH-F, C(60) (OH)(32-34)·7H(2)O: HH-F, and C(60) (OH)(44)·8H(2)O: SHH-F) on UV-irradiation-induced cell injuries. HH-F and SHH-F exerted hydroxyl-radical scavenging activities as shown by DMPO-spin trap/ESR method, more markedly than LH-F. UVA or UVB irradiation-induced injuries in human skin keratinocytes HaCaT were significantly suppressed by HH-F and SHH-F, but scarcely by LF-H. The cytoprotective effects of SHH-F had a tendency to be superior to that of HH-F. And the cytoprotective effects of SHH-F against UVB-induced injuries were more effective than those of UVA. Irradiation with UVB to HaCaT cells was shown to cause rapid increases in cell-injury-associated symptoms such as intracellular oxidative stress levels, the formation of cyclobutane pyrimidine dimers and chromatin condensation, all of which were repressed by SHH-F. Thus, UVB-induced diverse harmful effects could be prevented by SHH-F, which was suggested to exert the cytoprotective effects through intracellular reactive oxygen species-scavenging in the keratinocytes.
Collapse
Affiliation(s)
- Yasukazu Saitoh
- Laboratory of Cell-Death Control BioTechnology, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Nanatsuka 562, Shobara, Hiroshima 727-0023, Japan
| | | | | | | | | | | | | |
Collapse
|
41
|
Lagadu S, Pottier I, Sichel F, Laurent C, Lefaix JL, Prevost V. Detection of extracellular 8-oxo-7,8-dihydro-2'-deoxyguanosine as a biomarker of oxidative damage in X-irradiated fibroblast cultures: optimization of analytical procedure. Biomarkers 2010; 15:707-14. [PMID: 20868227 DOI: 10.3109/1354750x.2010.511269] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We have developed a simple methodology, based on single-step solid-phase extraction followed by isocratic high-performance liquid chromatography coupled with electrochemical detection (HPLC-ECD), to determine extracellular 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) in culture supernatants of normal human dermal fibroblasts. A standard addition method, using externally added 8-oxodG (0.5 and 1 pmol) was employed to eliminate matrix effects arising from the chemically complex, protein-rich medium. Secondly, applying this procedure to X-ray irradiated fibroblasts, we report a significant twofold increase in the levels of 8-oxodG at the radiobiologically relevant dose of 6 Gy. This suggests that extracellular 8-oxodG might be a useful biomarker for oxidative stress following moderate doses of X-irradiation.
Collapse
Affiliation(s)
- Stéphanie Lagadu
- Groupe Régional d'Etudes sur le Cancer - UPRES EA 1772 - IFR 146, Université de Caen Basse-Normandie and Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | | | | | | | | | | |
Collapse
|
42
|
Rezvani HR, Mazurier F, Morice-Picard F, Jouary T, Cario-André M, Ged C, de Verneuil H, Taïeb A. Xeroderma pigmentosum: clues to understanding cancer initiation. DERMATOL SIN 2010. [DOI: 10.1016/s1027-8117(10)60021-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
43
|
Ramachandran S, Rajendra Prasad N, Karthikeyan S. Sesamol inhibits UVB-induced ROS generation and subsequent oxidative damage in cultured human skin dermal fibroblasts. Arch Dermatol Res 2010; 302:733-44. [DOI: 10.1007/s00403-010-1072-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2010] [Revised: 07/08/2010] [Accepted: 07/28/2010] [Indexed: 01/08/2023]
|
44
|
Angiopoietin-1 reduces H(2)O(2)-induced increases in reactive oxygen species and oxidative damage to skin cells. J Invest Dermatol 2010; 130:1307-17. [PMID: 20072135 DOI: 10.1038/jid.2009.431] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
UV light-based damage to skin cells can cause photoaging and skin cancer. A major cause of UV light-induced damage to skin is increased free radicals, such as superoxides. Increased superoxides can cause oxidative and nitrative damage to cell components. Thus, agents that counteract these damages may have therapeutic value. Herein, we show that angiopoietin-1 (ang1) prevented and blocked H(2)O(2)-induced increases in superoxides in human spontaneously immortalized keratinocyte line, HaCaT, and primary melanocytes (HeMn). Ang1 prevented H(2)O(2)-induced increases in damage to DNA (8-hydroxy-2'-deoxyguanosine) and proteins (nitrotyrosinylation). Ang1 promoted skin cell metabolism/viability, adhesion, and akt and MAPK(p42/44) activations. Using multi-gene transcriptional profiling, we found that skin cells express integrin subunits {(beta(1), beta(4-6), beta(8), alpha(v), alpha(2), alpha(3), alpha(6) (HaCaT)), (beta(1), beta(3), beta(5), beta(8), alpha(v), alpha(3) (HeMn))} and lack tie2 receptor mRNA. Integrin antibodies (alpha(v), beta(1)) disrupted skin cell adhesion to ang1 and ang1-induced decreases in superoxides. Our findings show that ang1 blocks free radical damage to skin cells and may be clinically useful to prevent and/or reduce photoaging and skin cancer.
Collapse
|
45
|
Duale N, Olsen AK, Christensen T, Butt ST, Brunborg G. Octyl methoxycinnamate modulates gene expression and prevents cyclobutane pyrimidine dimer formation but not oxidative DNA damage in UV-exposed human cell lines. Toxicol Sci 2010; 114:272-84. [PMID: 20071424 PMCID: PMC2840218 DOI: 10.1093/toxsci/kfq005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Octyl methoxycinnamate (OMC) is one of the most widely used sunscreen ingredients. To analyze biological effects of OMC, an in vitro approach was used implying ultraviolet (UV) exposure of two human cell lines, a primary skin fibroblast (GM00498) and a breast cancer (MCF-7) cell lines. End points include cell viability assessment, assay of cyclobutane pyrimidine dimers (CPDs) and oxidated DNA lesions using alkaline elution and lesion-specific enzymes, and gene expression analysis of a panel of 17 DNA damage–responsive genes. We observed that OMC provided protection against CPDs, and the degree of protection correlated with the OMC-mediated reduction in UV dose. No such protection was found with respect to oxidative DNA lesions. Upon UV exposure in the presence of OMC, the gene expression studies showed significant differential changes in some of the genes studied and the expression of p53 protein was also changed. For some genes, the change in expression seemed to be delayed in time by OMC. The experimental approach applied in this study, using a panel of 17 genes in an in vitro cellular system together with genotoxicity assays, may be useful in the initial screening of active ingredients in sunscreens.
Collapse
Affiliation(s)
- Nur Duale
- Department of Chemical Toxicology, Division of Environmental Medicine, Norwegian Institute of Public Health, Nydalen, NO-0403 Oslo, Norway
| | | | | | | | | |
Collapse
|
46
|
Abstract
Sunlight damages human skin, resulting in a wrinkled appearance. Since natural sunlight is polychromatic, its ultimate effects on the human skin are the result of not only the action of each wavelength separately, but also interactions among the many wavelengths, including UV, visible light, and infrared (IR). In direct sunlight, the temperature of human skin rises to about 40 degrees C following the conversion of absorbed IR into heat. So far, our knowledge of the effects of IR radiation or heat on skin aging is limited. Recent work demonstrates that IR and heat exposure each induces cutaneous angiogenesis and inflammatory cellular infiltration, disrupts the dermal extracellular matrix by inducing matrix metalloproteinases, and alters dermal structural proteins, thereby adding to premature skin aging. This review provides a summary of current research on the effects of IR radiation and heat on aging in human skin in vivo.Journal of Investigative Dermatology Symposium Proceedings (2009) 14, 15-19; doi:10.1038/jidsymp.2009.7.
Collapse
|
47
|
Highly hydroxylated or γ-cyclodextrin-bicapped water-soluble derivative of fullerene: The antioxidant ability assessed by electron spin resonance method and β-carotene bleaching assay. Bioorg Med Chem Lett 2009; 19:5293-6. [DOI: 10.1016/j.bmcl.2009.07.149] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Revised: 07/29/2009] [Accepted: 07/30/2009] [Indexed: 11/21/2022]
|
48
|
Effect of polypeptide from Chlamys farreri on UVB-induced ROS/NF-κB/COX-2 activation and apoptosis in HaCaT cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 96:109-16. [DOI: 10.1016/j.jphotobiol.2009.04.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Revised: 04/17/2009] [Accepted: 04/27/2009] [Indexed: 11/23/2022]
|
49
|
Smith HL, Howland MC, Szmodis AW, Li Q, Daemen LL, Parikh AN, Majewski J. Early stages of oxidative stress-induced membrane permeabilization: a neutron reflectometry study. J Am Chem Soc 2009; 131:3631-8. [PMID: 19275260 DOI: 10.1021/ja807680m] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neutron reflectometry was used to probe in situ the structure of supported lipid bilayers at the solid-liquid interface during the early stages of UV-induced oxidative degradation. Single-component supported lipid bilayers composed of gel phase, dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), and fluid phase, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), phospholipids were exposed to low-dose oxidative stress generated by UV light and their structures were examined by neutron reflectometry. An interrupted illumination mode, involving exposures in 15 min increments with 2 h intervals between subsequent exposures, and a continuous mode involving a single 60 (or 90) min exposure period were employed. In both cases, pronounced differences in the structure of the lipid bilayer after exposure were observed. Interrupted exposure led to a substantial decrease in membrane coverage but preserved its total thickness at reduced scattering length densities. These results indicate that the initial phase during UV-induced membrane degradation involves the formation of hydrophilic channels within the membrane. This is consistent with the loss of some lipid molecules we observe and attendant reorganization of residual lipids forming hemimicellar edges of the hydrophilic channels. In contrast, continuous illumination produced a graded interface of continuously varied scattering length density (and hence hydrocarbon density) extending 100-150 A into the liquid phase. Exposure of a DPPC bilayer to UV light in the presence of a reservoir of unfused vesicles showed low net membrane disintegration during oxidative stress, presumably because of surface back-filling from the bulk reservoir. Chemical evidence for membrane degradation was obtained by mass spectrometry and Fourier transform infrared spectroscopy. Further evidence for the formation of hydrophilic channels was furnished by fluorescence microscopy and imaging ellipsometry data.
Collapse
Affiliation(s)
- Hillary L Smith
- Manuel Lujan Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | | | | | | | | | | | | |
Collapse
|
50
|
Petta TB, Nakajima S, Zlatanou A, Despras E, Couve-Privat S, Ishchenko A, Sarasin A, Yasui A, Kannouche P. Human DNA polymerase iota protects cells against oxidative stress. EMBO J 2008; 27:2883-95. [PMID: 18923427 DOI: 10.1038/emboj.2008.210] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2008] [Accepted: 09/15/2008] [Indexed: 01/10/2023] Open
Abstract
Human DNA polymerase iota (poliota) is a unique member of the Y-family of specialised polymerases that displays a 5'deoxyribose phosphate (dRP) lyase activity. Although poliota is well conserved in higher eukaryotes, its role in mammalian cells remains unclear. To investigate the biological importance of poliota in human cells, we generated fibroblasts stably downregulating poliota (MRC5-pol iota(KD)) and examined their response to several types of DNA-damaging agents. We show that cell lines downregulating poliota exhibit hypersensitivity to DNA damage induced by hydrogen peroxide (H(2)O(2)) or menadione but not to ethylmethane sulphonate (EMS), UVC or UVA. Interestingly, extracts from cells downregulating poliota show reduced base excision repair (BER) activity. In addition, poliota binds to chromatin after treatment of cells with H(2)O(2) and interacts with the BER factor XRCC1. Finally, green fluorescent protein-tagged poliota accumulates at the sites of oxidative DNA damage in living cells. This recruitment is partially mediated by its dRP lyase domain and ubiquitin-binding domains. These data reveal a novel role of human poliota in protecting cells from oxidative damage.
Collapse
Affiliation(s)
- Tirzah Braz Petta
- Centre National de la Recherche Scientifique FRE2939, Unit of genetic stability and oncogenesis, Institut Gustave Roussy, Université Paris-Sud, Villejuif, France
| | | | | | | | | | | | | | | | | |
Collapse
|