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Liu M, He G, Wang F, Sun Y, Ma S, Hao Y, Wang Y. Pilose antler extract promotes hair growth in androgenic alopecia mice by promoting the initial anagen phase. Biomed Pharmacother 2024; 174:116503. [PMID: 38565060 DOI: 10.1016/j.biopha.2024.116503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/16/2024] [Accepted: 03/27/2024] [Indexed: 04/04/2024] Open
Abstract
Androgenetic alopecia (AGA) is a prevalent disease in worldwide, local application or oral are often used to treat AGA, however, effective treatments for AGA are currently limited. In this work, we observed the promoting the initial anagen phase effect of pilose antler extract (PAE) on hair regeneration in AGA mice. We found that PAE accelerated hair growth and increased the degree of skin blackness by non-invasive in vivo methods including camera, optical coherence tomography and dermoscopy. Meanwhile, HE staining of sagittal and coronal skin sections revealed that PAE augmented the quantity and length of hair follicles, while also enhancing skin thickness and hair papilla diameter. Furthermore, PAE facilitated the shift of the growth cycle from the telogen to the anagen phase and expedited the proliferation of hair follicle stem cells and matrix cells in mice with AGA. This acceleration enabled the hair follicles to enter the growth phase at an earlier stage. PAE upregulated the expression of the sonic hedgehog (SHH), smoothened receptor, glioma-associated hemolog1 (GLI1), and downregulated the expression of bone morphogenetic protein 4 (BMP4), recombinant mothers against decapentaplegic homolog (Smad) 1 and 5 phosphorylation. This evidence suggests that PAE fosters hair growth and facilitates the transition of the growth cycle from the telogen to the anagen phase in AGA mice. This effect is achieved by enhancing the proliferation of follicle stem cells and matrix cells through the activation of the SHH/GLI pathway and suppression of the BMP/Smad pathway.
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Affiliation(s)
- Menghua Liu
- School of Life Science, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Gaiying He
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Fenglong Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yanan Sun
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Shuhua Ma
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yu Hao
- School of Life Science, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Yi Wang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Gao W, Zhang Y, Yuan L, Huang F, Wang YS. Long Non-coding RNA H19-Overexpressing Exosomes Ameliorate UVB-Induced Photoaging by Upregulating SIRT1 Via Sponging miR-138. Photochem Photobiol 2023; 99:1456-1467. [PMID: 36916469 DOI: 10.1111/php.13801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
UVB-induced photoaging is characterized by wrinkle formation, slackness and senile plaques, affecting the health and beauty of human being. Our previous study revealed that exosomes derived from adipose-derived stem cells (ADSCs) could efficiently alleviate UVB-induced photodamage. However, the functional ingredients in exosomes were undefined. LncRNA H19, one of the well-researched lncRNAs in exosomes, exhibits multiple physiological effects. This study aims to demonstrate the photo-protective role of lncRNA H19 on skin photoaging in UVB-irradiated human skin fibroblasts cells (HSFs) and Kunming mice. LncRNA H19-overexpressing exosomes (H19-Exo) were isolated from the supernatant of ADSCs infected with lncRNA H19-loaded lentivirus. The results showed that H19-Exo significantly inhibited MMPs production, DNA damage and ROS generation while enhancing procollagen type I synthesis in UVB-irradiated HSFs. Meanwhile, H19-Exo markedly reversed epidermal thickening and collagen degradation in UVB-irradiated mice. Furthermore, luciferase reporter assays indicated that lncRNA H19 acted as a sponge for miR-138 expression, and SIRT1 was targeted by miR-138. Evidence from both in vitro and in vivo studies also revealed that H19-Exo could enhance SIRT1 expression by knocking down miR-138. In conclusion, lncRNA H19 served as a therapeutic candidate in treating UVB-induced skin photoaging by upregulation of SIRT1 via miR-138.
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Affiliation(s)
- Wei Gao
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu Medical College, Bengbu, Anhui, China
| | - Yue Zhang
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu Medical College, Bengbu, Anhui, China
| | - Limin Yuan
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu Medical College, Bengbu, Anhui, China
| | - Fangzhou Huang
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu Medical College, Bengbu, Anhui, China
| | - Yu-Shuai Wang
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, Bengbu Medical College, Bengbu, Anhui, China
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3
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Yang JW, Fan GB, Tan F, Kong HM, Liu Q, Zou Y, Tan YM. The role and safety of UVA and UVB in UV-induced skin erythema. Front Med (Lausanne) 2023; 10:1163697. [PMID: 37441686 PMCID: PMC10335810 DOI: 10.3389/fmed.2023.1163697] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 06/05/2023] [Indexed: 07/15/2023] Open
Abstract
Background Different wavelengths of ultraviolet (UV) light cause skin damage through different mechanisms. Minimal erythema dose (MED) is usually used to clinically evaluate skin sensitivity to ultraviolet radiation by inducing skin erythema using ultraviolet B (UVB) or ultraviolet A (UVA) + UVB. Aims In this study, we detected changes in the blood flow at the MED erythema caused by UVB and UVA + UVB radiation through optical coherence tomography (OCT) to explain the role of different bands of ultraviolet rays in erythema induction. Methods Two MED irradiation areas on the subjects' back were irradiated with UVB alone or UVA + UVB (UVA: UVB = 8:1). The absolute energy of UVB remained the same in UVB and UVA+UVB. At 24 h after the irradiation, the changes in the blood flow in the MED area were detected using OCT. Results Compared with the blank control, the maximum blood flow depth, blood flow peak, and total blood flow of UVB-MED and UVA+UVB-MED were significantly increased. Notably, the maximum blood flow depth and blood flow peak of UVB-MED were higher than UVA+UVB-MED. There was no significant difference in total blood perfusion between UVA+UVB-MED and UVB-MED. Under the same UVB energy, the skin erythema caused by UVA + UVB was weaker than UVB alone. Conclusions The analysis of local blood flow by OCT showed that the peak and maximum depth of local blood flow caused by UVB alone were significantly higher than UVA + UVB.
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Affiliation(s)
- Jing-Wen Yang
- Department of Skin and Cosmetics Research, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Professional Technical Service Platform for Clinical Evaluation of Skin Health Related Products, Shanghai Science and Technology Commission, Shanghai, China
- MPA Key Laboratory for Monitoring and Evaluation of Cosmetics, Shanghai, China
| | - Guo-Biao Fan
- Department China Regulatory Affairs, LVMH Perfume and Cosmetic (Shanghai) Limited Company, Shanghai, China
| | - Fei Tan
- Department of Skin and Cosmetics Research, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hai-Mei Kong
- Department of Skin and Cosmetics Research, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Professional Technical Service Platform for Clinical Evaluation of Skin Health Related Products, Shanghai Science and Technology Commission, Shanghai, China
- MPA Key Laboratory for Monitoring and Evaluation of Cosmetics, Shanghai, China
| | - Qing Liu
- Department China Regulatory Affairs, LVMH Perfume and Cosmetic (Shanghai) Limited Company, Shanghai, China
| | - Ying Zou
- Department of Skin and Cosmetics Research, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Professional Technical Service Platform for Clinical Evaluation of Skin Health Related Products, Shanghai Science and Technology Commission, Shanghai, China
- MPA Key Laboratory for Monitoring and Evaluation of Cosmetics, Shanghai, China
| | - Yi-Mei Tan
- Department of Skin and Cosmetics Research, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Professional Technical Service Platform for Clinical Evaluation of Skin Health Related Products, Shanghai Science and Technology Commission, Shanghai, China
- MPA Key Laboratory for Monitoring and Evaluation of Cosmetics, Shanghai, China
- Human Phenome Institute, Fudan University, Shanghai, China
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Min D, Ahn Y, Lee HK, Jung W, Kim H. A novel optical coherence tomography-based in vitro method of anti-aging skin analysis using 3D skin wrinkle mimics. Skin Res Technol 2023; 29:e13354. [PMID: 37357658 PMCID: PMC10209839 DOI: 10.1111/srt.13354] [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: 12/29/2022] [Accepted: 05/08/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND Wrinkles represent a characteristic symptom of skin aging. In recent years, various studies have focused on their prevention and/or cure. However, clinical tests are still the only method available to directly detect and evaluate the anti-wrinkle efficacy of various substances. Moreover, no in vitro strategy for such anti-aging skin analysis has been reported. Therefore, in this study, we aimed to develop a novel technology to overcome these limitations. MATERIALS AND METHODS Full-thickness (FT) skin wrinkle mimics with various widths and depths were fabricated using a collagen stamping method. These were analyzed and compared using 2D and 3D Swept Source-Optical Coherence Tomography (SS-OCT) imaging technologies. RESULTS SS-OCT demonstrated superficial and cross-sectional images of the wrinkle mimics, and the size of the wrinkles was validated using image analysis. Retinoic acid treatment significantly decreased both the depth and width of wrinkles formed in the FT skin wrinkle mimics. CONCLUSIONS Using 3D tissue engineering and SS-OCT imaging technologies, we developed a novel in vitro technique that can directly detect skin wrinkles. This significantly efficient method could lead to an alternative strategy for animal experiments and preclinical anti-aging research on the skin.
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Affiliation(s)
- Daejin Min
- AMOREPACIFIC Research and Innovation CenterYonginRepublic of Korea
| | - Yujin Ahn
- Department of Biomedical EngineeringUlsan National Institute of Science and Technology (UNIST)UlsanRepublic of Korea
| | | | - Woonggyu Jung
- Department of Biomedical EngineeringUlsan National Institute of Science and Technology (UNIST)UlsanRepublic of Korea
| | - Hyoung‐June Kim
- AMOREPACIFIC Research and Innovation CenterYonginRepublic of Korea
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Shen J, Yu X, Zhuang Y, Kong Y, Zhao J, Yao Z. Clinical efficacy and safety of targeted injection of PRP with skin booster in the treatment of aging face. Biotechnol Genet Eng Rev 2023:1-17. [PMID: 37035918 DOI: 10.1080/02648725.2023.2199233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Platelet-rich plasma (PRP) with skin booster is a popular treatment for improving skin quality and reducing the signs of aging. However, few studies have evaluated its clinical efficacy in patients with aging face. This study aimed to evaluate the clinical efficacy, adverse reactions, and follow-up results of targeted injection of PRP with skin booster in treating patients with aging face. The study included 80 patients treated with targeted injection of PRP with skin booster from July 2022 to February 2023. The doctors compared the changes of the patients' facial skin indicators, quality of life, and satisfaction with their appearance before and after treatment, and analyzed the clinical efficacy, adverse reactions, and follow-up results of the patients after treatment. After one course of treatment, the patients' facial skin indicators, quality of life, and satisfaction with their appearance improved significantly, with P < 0.05. The total clinical effective rate was 88.75%, and the incidence of adverse reactions was 6.25%. After half a year of follow-up, 48.75% of the patients were willing to receive further treatment, and their facial soft feel, natural expression, and self-feeling comfort had significantly improved. Targeted injection of PRP with skin booster is an effective and safe treatment for improving facial skin symptoms such as coarse pores and wrinkles in patients with aging face. The results of this study provide evidence for the clinical use of PRP with skin booster in aesthetic medicine.
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Affiliation(s)
- Jinwen Shen
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xia Yu
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yin Zhuang
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuwei Kong
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jingjun Zhao
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhirong Yao
- Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Bromberger L, Heise B, Felbermayer K, Leiss-Holzinger E, Ilicic K, Schmid TE, Bergmayr A, Etzelstorfer T, Geinitz H. Radiation-induced alterations in multi-layered, in-vitro skin models detected by optical coherence tomography and histological methods. PLoS One 2023; 18:e0281662. [PMID: 36862637 PMCID: PMC9980765 DOI: 10.1371/journal.pone.0281662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 01/28/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Inflammatory skin reactions and skin alterations are still a potential side effect in radiation therapy (RT), which also need attention for patients' health care. METHOD In a pre-clinical study we consider alterations in irradiated in-vitro skin models of epidermal and dermal layers. Typical dose regimes in radiation therapy are applied for irradiation. For non-invasive imaging and characterization optical coherence tomography (OCT) is used. Histological staining method is additionally applied for comparison and discussion. RESULTS Structural features, such as keratinization, modifications in epidermal cell layer thickness and disorder in the layering-as indications for reactions to ionizing radiation and aging-could be observed by means of OCT and confirmed by histology. We were able to recognize known RT induced changes such as hyper-keratosis, acantholysis, and epidermal hyperplasia as well as disruption and/or demarcation of the dermo-epidermal junction. CONCLUSION The results may pave the way for OCT to be considered as a possible adjunctive tool to detect and monitor early skin inflammation and side effects of radiotherapy, thus supporting patient healthcare in the future.
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Affiliation(s)
- Luisa Bromberger
- Department of Radiation Oncology, Ordensklinikum Linz Barmherzige Schwestern (BHS), Linz, Austria
| | - Bettina Heise
- Institute for Mathematical Methods in Medicine and Data Based Modelling, Johannes Kepler University (JKU), Linz, Austria
- Research Center for Non-Destructive Testing (RECENDT)-GmbH, Linz, Austria
- * E-mail:
| | | | | | - Katarina Ilicic
- Department of Radiation Oncology, Klinikum rechts der Isar (MRI), TUM München, München, Germany
| | - Thomas Ernst Schmid
- Department of Radiation Oncology, Klinikum rechts der Isar (MRI), TUM München, München, Germany
| | - Alexandra Bergmayr
- Department of Pathology, Ordensklinikum Linz Barmherzige Schwestern (BHS), Linz, Austria
| | - Tanja Etzelstorfer
- Department of Radiation Oncology, Ordensklinikum Linz Barmherzige Schwestern (BHS), Linz, Austria
| | - Hans Geinitz
- Department of Radiation Oncology, Ordensklinikum Linz Barmherzige Schwestern (BHS), Linz, Austria
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Untracht GR, Dikaios N, Durrani AK, Bapir M, Sarunic MV, Sampson DD, Heiss C, Sampson DM. Pilot study of optical coherence tomography angiography-derived microvascular metrics in hands and feet of healthy and diabetic people. Sci Rep 2023; 13:1122. [PMID: 36670141 PMCID: PMC9853488 DOI: 10.1038/s41598-022-26871-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/21/2022] [Indexed: 01/22/2023] Open
Abstract
Optical coherence tomography angiography (OCTA) is a non-invasive, high-resolution imaging modality with growing application in dermatology and microvascular assessment. Accepted reference values for OCTA-derived microvascular parameters in skin do not yet exist but need to be established to drive OCTA into the clinic. In this pilot study, we assess a range of OCTA microvascular metrics at rest and after post-occlusive reactive hyperaemia (PORH) in the hands and feet of 52 healthy people and 11 people with well-controlled type 2 diabetes mellitus (T2DM). We calculate each metric, measure test-retest repeatability, and evaluate correlation with demographic risk factors. Our study delivers extremity-specific, age-dependent reference values and coefficients of repeatability of nine microvascular metrics at baseline and at the maximum of PORH. Significant differences are not seen for age-dependent microvascular metrics in hand, but they are present for several metrics in the foot. Significant differences are observed between hand and foot, both at baseline and maximum PORH, for most of the microvascular metrics with generally higher values in the hand. Despite a large variability over a range of individuals, as is expected based on heterogeneous ageing phenotypes of the population, the test-retest repeatability is 3.5% to 18% of the mean value for all metrics, which highlights the opportunities for OCTA-based studies in larger cohorts, for longitudinal monitoring, and for assessing the efficacy of interventions. Additionally, branchpoint density in the hand and foot and changes in vessel diameter in response to PORH stood out as good discriminators between healthy and T2DM groups, which indicates their potential value as biomarkers. This study, building on our previous work, represents a further step towards standardised OCTA in clinical practice and research.
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Affiliation(s)
- Gavrielle R Untracht
- Department of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, 6009, Australia
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK
| | - Nikolaos Dikaios
- Mathematics Research Centre, Academy of Athens, Athens, 10679, Greece
| | - Abdullah K Durrani
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK
- School of Physics, Advanced Technology Institute, The University of Surrey, Guildford, GU27XH, UK
| | - Mariam Bapir
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK
| | - Marinko V Sarunic
- Institute of Ophthalmology, University College London, London, EC1V 2PD, UK
- Department of Medical Physics and Biomedical Engineering, University College London, London, WC1E 6BT, UK
| | - David D Sampson
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK
- School of Physics, Advanced Technology Institute, The University of Surrey, Guildford, GU27XH, UK
| | - Christian Heiss
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK
- East Surrey Hospital, Surrey and Sussex Healthcare NHS Trust, Redhill, RH15RH, UK
| | - Danuta M Sampson
- School of Biosciences and Medicine, The University of Surrey, Guildford, GU27XH, UK.
- Institute of Ophthalmology, University College London, London, EC1V 2PD, UK.
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Vingan NR, Parsa S, Barillas J, Culver A, Kenkel JM. Evaluation and characterization of facial skin aging using optical coherence tomography. Lasers Surg Med 2023; 55:22-34. [PMID: 36208115 DOI: 10.1002/lsm.23611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/05/2022] [Accepted: 09/26/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES The skin aging exposome encompasses internal and external factors that contribute to clinical signs of facial aging. Aging skin can be characterized by distinctive features such as wrinkles, lentigines, elastosis, and roughness. Optical coherence tomography (OCT) is capable of noninvasively measuring skin characteristics. This study aimed to assess bilateral features using OCT to explore temporal skin changes among decades and potential changes in facial skin aging based on laterality. METHODS A total of 97 subjects between 20 and 89 years old with Fitzpatrick skin types I to IV were enrolled. VivoSight, a Multi-Beam OCT system intended to gather topographical and histological images of skin, was used to scan the area inferolateral to the lateral canthus, bilaterally. Investigators compared characteristics of skin roughness, attenuation coefficient and blood flow across age groups and based on laterality to determine any differences. RESULTS Only data from successful OCT scans were used. Seventy subjects, 10 from each specified decade, had successful bilateral scans and were thus included in the analysis. Chronological aging was characterized by significantly decreased dermal attenuation coefficient with increased age. Skin roughness measurements showed trends of increased roughness with age; however, no statistically significant changes were seen between groups. Qualitative differences amongst scans taken on right and left sides of the face showed no significance regarding roughness, density or blood flow at depths ranging from 0.05 to 0.5 mm. CONCLUSIONS OCT is an effective method for evaluating changes in aging skin. Our results illustrate a decline in skin density with chronological age. Additionally, it was illustrated that structural change in the epidermis and dermis does occur, however on a microscopic scale, there are no significant differences based on laterality. OCT holds promise as a noninvasive technique for characterization of aging skin. Its utility and application in the clinical management and treatment of aged skin requires further research; however, the technology has potential to personalize therapies based on objective findings.
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Affiliation(s)
- Nicole R Vingan
- Department of Plastic Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Shyon Parsa
- University of Texas Southwestern Medical School, Dallas, Texas, USA
| | - Jennifer Barillas
- Department of Plastic Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Abby Culver
- Department of Plastic Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Jeffrey M Kenkel
- Department of Plastic Surgery, UT Southwestern Medical Center, Dallas, Texas, USA
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9
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Hart DA. Sex Differences in Biological Systems and the Conundrum of Menopause: Potential Commonalities in Post-Menopausal Disease Mechanisms. Int J Mol Sci 2022; 23:4119. [PMID: 35456937 PMCID: PMC9026302 DOI: 10.3390/ijms23084119] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 02/04/2023] Open
Abstract
Sex-specific differences in biology and physiology likely start at the time of conception and progress and mature during the pre-puberty time frame and then during the transitions accompanying puberty. These sex differences are impacted by both genetics and epigenetic alterations during the maturation process, likely for the purpose of preparing for successful reproduction. For females, later in life (~45-50) they undergo another transition leading to a loss of ovarian hormone production at menopause. The reasons for menopause are not clear, but for a subset of females, menopause is accompanied by an increased risk of a number of diseases or conditions that impact a variety of tissues. Most research has mainly focused on the target cells in each of the affected tissues rather than pursue the alternative option that there may be commonalities in the development of these post-menopausal conditions in addition to influences on specific target cells. This review will address some of the potential commonalities presented by an integration of the literature regarding tissue-specific aspects of these post-menopausal conditions and data presented by space flight/microgravity (a condition not anticipated by evolution) that could implicate a loss of a regulatory function of the microvasculature in the risk attached to the affected tissues. Thus, the loss of the integration of the paracrine relationships between endothelial cells of the microvasculature of the tissues affected in the post-menopausal environment could contribute to the risk for post-menopausal diseases/conditions. The validation of this concept could lead to new approaches for interventions to treat post-menopausal conditions, as well as provide new understanding regarding sex-specific biological regulation.
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Affiliation(s)
- David A. Hart
- Department of Surgery and Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 4N1, Canada; ; Tel.: +1-403-220-4571
- Bone & Joint Health Strategic Clinical Network, Alberta Health Services, Edmonton, AB T5J 3E4, Canada
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10
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Wikramanayake TC, Chéret J, Sevilla A, Birch-Machin M, Paus R. Targeting mitochondria in dermatological therapy: Beyond oxidative damage and skin aging. Expert Opin Ther Targets 2022; 26:233-259. [PMID: 35249436 DOI: 10.1080/14728222.2022.2049756] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The analysis of the role of the mitochondria in oxidative damage and skin aging is a significant aspect of dermatological research. Mitochondria generate most reactive oxygen species (ROS); however, excessive ROS are cytotoxic and DNA-damaging and promote (photo-)aging. ROS also possesses key physiological and regulatory functions and mitochondrial dysfunction is prominent in several skin diseases including skin cancers. Although many standard dermatotherapeutics modulate mitochondrial function, dermatological therapy rarely targets the mitochondria. Accordingly, there is a rationale for "mitochondrial dermatology"-based approaches to be applied to therapeutic research. AREAS COVERED This paper examines the functions of mitochondria in cutaneous physiology beyond energy (ATP) and ROS production. Keratinocyte differentiation and epidermal barrier maintenance, appendage morphogenesis and homeostasis, photoaging and skin cancer are considered. Based on related PubMed search results, the paper evaluates thyroid hormones, glucocorticoids, Vitamin D3 derivatives, retinoids, cannabinoid receptor agonists, PPARγ agonists, thyrotropin, and thyrotropin-releasing hormone as instructive lead compounds. Moreover, the mitochondrial protein MPZL3 as a promising new drug target for future "mitochondrial dermatology" is highlighted. EXPERT OPINION Future dermatological therapeutic research should have a mitochondrial medicine emphasis. Focusing on selected lead agents, protein targets, in silico drug design, and model diseases will fertilize a mito-centric approach.
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Affiliation(s)
- Tongyu C Wikramanayake
- Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A.,Molecular Cell and Developmental Biology Program, University of Miami Miller School of Medicine, Miami, FL, U.S.A
| | - Jérémy Chéret
- Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A
| | - Alec Sevilla
- Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A
| | - Mark Birch-Machin
- Dermatological Sciences, Translational and Clinical Research Institute, and The UK National Innovation Centre for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - Ralf Paus
- Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, U.S.A.,Monasterium Laboratory, Münster, Germany.,Centre for Dermatology Research, University of Manchester, and NIHR Manchester Biomedical Research Centre, Manchester, UK
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11
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Ruini C, Daxenberger F, Gust C, Schuh S, French LE, Welzel J, Sattler EC. [Advances in optical coherence tomography]. Hautarzt 2021; 72:1048-1057. [PMID: 34698874 DOI: 10.1007/s00105-021-04905-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2021] [Indexed: 11/29/2022]
Abstract
Optical coherence tomography (OCT) has been able to establish itself in recent years not only in academic-scientific, but also in everyday dermatological practice. Its focus lies on epithelial tumors of the skin, which can be diagnosed intuitively and within a few seconds. Thus, basal cell carcinomas, actinic keratoses, and different stages of field cancerization can be diagnosed and monitored for response to therapy or possible recurrence. This often helps to avoid invasive sample extraction. Recently, the field of OCT and its latest advancement, dynamic OCT (D-OCT), has been expanded to include non-oncologic dermatological diseases. This encompasses inflammatory dermatoses and the analysis of physiological skin parameters such as hydration. Thanks to automated vascular imaging and the measurement of objective parameters such as epidermal thickness, blood flow at depth, optical attenuation coefficient, and skin roughness, more and more characteristics of the skin can be studied in a noninvasive and standardized way. New potential areas of application are eczema, contact allergic dermatitis, psoriasis, rosacea, telangiectasia, acute and chronic wounds, melasma and nevus flammeus but also melanocytic lesions.
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Affiliation(s)
- Cristel Ruini
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum der Universität München, LMU München, Frauenlobstr. 9-11, 80337, München, Deutschland. .,Doctorate School (PhD) in Clinical and Experimental Medicine, University of Modena and Reggio Emilia, Modena, Italien.
| | - Fabia Daxenberger
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum der Universität München, LMU München, Frauenlobstr. 9-11, 80337, München, Deutschland
| | - Charlotte Gust
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum der Universität München, LMU München, Frauenlobstr. 9-11, 80337, München, Deutschland
| | - Sandra Schuh
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Augsburg, Augsburg, Deutschland
| | - Lars E French
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum der Universität München, LMU München, Frauenlobstr. 9-11, 80337, München, Deutschland.,Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, USA
| | - Julia Welzel
- Klinik für Dermatologie und Allergologie, Universitätsklinikum Augsburg, Augsburg, Deutschland
| | - Elke C Sattler
- Klinik und Poliklinik für Dermatologie und Allergologie, Klinikum der Universität München, LMU München, Frauenlobstr. 9-11, 80337, München, Deutschland
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