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Shin SH, Lee YH, Rho NK, Park KY. Skin aging from mechanisms to interventions: focusing on dermal aging. Front Physiol 2023; 14:1195272. [PMID: 37234413 PMCID: PMC10206231 DOI: 10.3389/fphys.2023.1195272] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Skin aging is a multifaceted process that involves intrinsic and extrinsic mechanisms that lead to various structural and physiological changes in the skin. Intrinsic aging is associated with programmed aging and cellular senescence, which are caused by endogenous oxidative stress and cellular damage. Extrinsic aging is the result of environmental factors, such as ultraviolet (UV) radiation and pollution, and leads to the production of reactive oxygen species, ultimately causing DNA damage and cellular dysfunction. In aged skin, senescent cells accumulate and contribute to the degradation of the extracellular matrix, which further contributes to the aging process. To combat the symptoms of aging, various topical agents and clinical procedures such as chemical peels, injectables, and energy-based devices have been developed. These procedures address different symptoms of aging, but to devise an effective anti-aging treatment protocol, it is essential to thoroughly understand the mechanisms of skin aging. This review provides an overview of the mechanisms of skin aging and their significance in the development of anti-aging treatments.
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Affiliation(s)
- Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Yoon Hwan Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Nark-Kyoung Rho
- Leaders Aesthetic Laser & Cosmetic Surgery Center, Seoul, Republic of Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Abdel-Motaleb AA, Bakr RM. Microdermabrasion assisted delivery of glycolic acid 70% peel for the treatment of melasma in dark-skinned patients. Dermatol Ther 2021; 34:e15025. [PMID: 34089564 DOI: 10.1111/dth.15025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 02/27/2021] [Accepted: 06/03/2021] [Indexed: 11/30/2022]
Abstract
Melasma is a disfiguring dermatologic condition and its treatment is still considered a challenge. To evaluate the efficacy and safety of microdermabrasion (MDA) combined with glycolic acid 70% (GA70%) peel versus GA70% alone in treating melasma in dark-skinned patients. This study included 30 female patients (skin type IV and V) with melasma. After cleansing the face, 3 passes of MDA were done on one side of the face. Then, GA70% was applied to the whole face in 1-2 uniform passes. Melasma area and severity index (MASI), modified MASI and hemi-MASI scores were used to assess the outcome. A significant decline of the mean MASI, mMASI and both hemi-MASI scores following treatment (p value = 0.000 for each). Furthermore, the hemi-MASI score on the MDA/GA70% treated side showed significantly greater decrease than the hemi-MASI score on GA70% treated side (p value = 0.041). MDA enhanced the improvement of GA70% peel effectively and safely.
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Affiliation(s)
- Amira A Abdel-Motaleb
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Assiut University Hospitals, Assiut, Egypt
| | - Radwa M Bakr
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Assiut University Hospitals, Assiut, Egypt
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Hutchison DM, Hakimi AA, Wijayaweera A, Seo S, Hong EM, Pham TT, Bircan M, Sivoraphonh R, Dunn B, Kobayashi MR, Kim S, Wong BJF. Electrochemical treatment of ex vivo human abdominal skin and potential use in scar management: A pilot study. Scars Burn Heal 2021; 7:2059513120988532. [PMID: 33796338 PMCID: PMC7970177 DOI: 10.1177/2059513120988532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Scar treatments aim to address pathologic collagen deposition; however, they can be expensive or difficult to control. Electrochemical therapy (ECT) offers a simple alternative treatment. The purpose of this study is to examine the acid-base and histological changes in ex vivo human abdominal skin following ECT. METHODS Forty-two ex vivo human panniculus tissue sections collected from six individuals were tumesced with normal saline. ECT was performed by inserting two platinum needle electrodes connected to a DC power supply into each specimen. Voltage was varied (3-6 V) and applied for 5 minutes. Each specimen was sectioned across both electrode insertion sites and immediately stained with pH sensitive dye. The width of dye color change for each dosimetry pair was calculated. Hematoxylin and eosin staining was used to evaluate samples. RESULTS AND DISCUSSION ECT caused a spatially localised and dose-dependent increased area of acidic and basic pH around the anode and cathode, respectively. A significantly greater mean width of pH change was generated at the cathode compared to the anode in all treatment groups. Histological evaluation displayed broad condensation and hyalinisation of dermal collagen. CONCLUSION ECT triggered dermal pH alterations and changed the underlying structural framework of the specimen. This technology may serve as a low-cost, minimally invasive local soft-tissue remodeling technique with potential application in scar management. LEVEL OF EVIDENCE 5. LAY SUMMARY Electrochemical therapy is a novel treatment that causes spatially selective dermal injury in areas of interest. This study measures the effects of electrochemical therapy when applied to abdominal skin. Electrochemical therapy appears to have beneficial effects by causing a highly localised reduction in collagen content or local softening of tissue, which is consistent with other studies on scar therapies, including chemexfoliation, radiofrequency technologies, and lasers. However, electrochemical therapy can be performed at a fraction of the costs of these aforementioned modalities.
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Affiliation(s)
- Dana M Hutchison
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Amir A Hakimi
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Avin Wijayaweera
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Soohong Seo
- Department of Dermatology, Korea
University Anam Hospital, Seoul, South Korea
| | - Ellen M Hong
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Tiffany T Pham
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Melissa Bircan
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Ryan Sivoraphonh
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
| | - Brandyn Dunn
- Department of Otolaryngology - Head and
Neck Surgery, School of Medicine, University of California - Irvine, Orange, CA,
USA
| | - Mark R Kobayashi
- Department of Plastic Surgery, School of
Medicine, University of California - Irvine, Orange, CA, USA
| | - Sehwan Kim
- Beckman Laser Institute Korea, School of
Medicine, Dankook University, Cheoan, Chungnam, Republic of Korea
| | - Brian JF Wong
- Beckman Laser Institute & Medical
Clinic, University of California - Irvine, Irvine, CA, USA
- Department of Otolaryngology - Head and
Neck Surgery, School of Medicine, University of California - Irvine, Orange, CA,
USA
- Department of Biomedical Engineering,
University of California - Irvine, Irvine, CA, USA
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Gebril SM, Ito Y, Abu-Dief EE, Hussein MRA, Elsayed HM, Mohammad AN, Abdelaal UM, Higuchi K. Ultra-structural study of the indomethacin-induced apoptosis and autophagy in rat gastric parietal cells. Ultrastruct Pathol 2020; 44:300-313. [PMID: 32672114 DOI: 10.1080/01913123.2020.1772429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND AIM OF THE WORK Indomethacin (IND), a non-steroidal anti-inflammatory drug, can induce gastric mucosal ulcerations. To date, the ultra-structural changes in the parietal cells (PCs) of the gastric mucosa following the intake of IND are mostly unknown. We carried out the current investigation to get insights into this issue. MATERIALS AND METHODS We established an animal model consisting of 35 adult male Sprague Dawley rats. The animals were divided into three groups, including; control (normal feeding), fasting, and indomethacin-treated groups. After treatment of 18-h fasting rats with IND, they were sacrificed at 3, 6, and 12-h intervals. The morphological features, including the apoptotic, and autophagic changes in the gastric mucosa PCs were examined using transmission electron microscopy. RESULTS In normal feeding animals (control group), the gastric PCs were present in various stages of activity. Fasting was associated with the predominance of the inactive parietal cells with features of up-regulated autophagy. In the IND -treated animals (at 3-h interval), PCs showed prominent autophagic changes, and subtle apoptotic cell death. In the IND -treated animals (at 6-12-h interval), PCs showed prominent apoptotic changes, and subtle autophagic features. CONCLUSIONS Our study indicates that IND treatment could induce gastropathy through time-dependent alterations in the autophagic and apoptotic machinery of PCs. Further studies are needed to examine the underlying molecular mechanisms.
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Affiliation(s)
- Sahar M Gebril
- Department of Anatomy, and Cell Biology, Osaka Medical College , Takatsuki, Japan.,Department of Histology, Faculty of Medicine, Sohag University , Sohag, Egypt
| | - Yuko Ito
- Department of Anatomy, and Cell Biology, Osaka Medical College , Takatsuki, Japan
| | - Eman E Abu-Dief
- Department of Histology, Faculty of Medicine, Sohag University , Sohag, Egypt
| | | | - Hoda M Elsayed
- Department of Histology, Faculty of Medicine, Sohag University , Sohag, Egypt
| | - Asmaa Naser Mohammad
- Department of Tropical Medicine and Gastroenterology, Sohag University Hospital , Sohag, Egypt
| | - Usama M Abdelaal
- Department of Internal Medicine, Sohag University Hospital , Egypt.,Department of Internal Medicine, Osaka Medical College , Takatsuki, Japan
| | - Kazuhide Higuchi
- Department of Internal Medicine, Osaka Medical College , Takatsuki, Japan
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Abdel-Motaleb AA, Zedan H, Mostafa MM, Abu-Dief EE, Gebril SM, Abdelwahed Hussein MR. Combined microneedling with topical application of platelet-rich plasma versus microneedling alone in the treatment of stria distensae: clinicopathological analysis. J DERMATOL TREAT 2020; 33:836-847. [PMID: 32538219 DOI: 10.1080/09546634.2020.1782323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Background: Striae distensae (SD) are common skin conditions.Objectives: This study was done to test the hypothesis that 'the use of microneedling (MN) before platelet-rich plasma (PRP) application will allow for deeper penetration and therefore, augment its efficacy in the treatment of SD.'Patients and methods: Forty patients with SD were divided into (i) Group I, the patients were treated with MN only, and (ii) Group II, the patients were treated with combined MN-PRP. The clinical improvement was evaluated by two dermatologists. Skin biopsies were obtained before and after therapy to examine immunohistological changes.Results: As compared to the use of MN alone, therapy with combined MN-PRP was associated with: (i) a marked to the excellent improvement of the skin lesions of SD, (ii) a more significant deposition of collagen and elastic fibers, (iii) increased proliferative activity in the epidermis, and (iv) a decreased caspase-3 protein expression values in the epidermis.Conclusions: This study proved that the combined MN-PRP is more effective than MN alone for the treatment of the lesions of SD. The underlying molecular mechanisms are open for future studies.
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Affiliation(s)
- Amira A Abdel-Motaleb
- Faculty of Medicine, Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | - Hatem Zedan
- Faculty of Medicine, Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | | | - Eman E Abu-Dief
- Faculty of Medicine, Department Histology, Sohag University, Sohag, Egypt
| | - Sahar M Gebril
- Faculty of Medicine, Department Histology, Sohag University, Sohag, Egypt
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Abdel-Magiud EM, Taha EA, Bakr RM, Ismail SA, Sayed SK, Makboul M, Kamel-ElSayed S, Abdel Motaleb AA. Effects of different therapeutic modalities for postacne scars on circulating collagen III. J Cosmet Dermatol 2019; 19:1517-1521. [PMID: 31638311 DOI: 10.1111/jocd.13184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 09/17/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND Therapies for postacne scarring act through modulation of elastin and collagen, and collagen III might therefore represent a biomarker of treatment effectiveness. PATIENTS AND METHODS Patients (n = 70) with postacne scars and individuals without scars (n = 56) were included in this case-control study. Patients were treated with Dermaroller microneedling, trichloroacetic acid chemical reconstruction, punch excision, or scar subcision. Scar severity was graded immediately before and after treatment with a photographic quartile scale and the ECCA scale. Serum levels of collagen III were measured in control individuals and in patients, before treatment, 1 month after the first treatment session, and 4 months after the final session. RESULTS Circulating levels of collagen III were significantly higher in patients with postacne scarring (24.1 ± 12.5) before treatment than in control individuals (2.6 ± 0.8). Circulating levels of collagen in patients were significantly lower 4 months posttreatment (14.3 ± 8.1) than at baseline. The mean percentage change in serum collagen III was positively correlated with both the mean percentage improvement by photographic evaluation (r = .530, P < .000) and the mean percentage change in the ECCA scale (r = .632, P < .000). CONCLUSION Circulating collagen III is a biomarker for improvement of postacne scarring following different therapies.
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Affiliation(s)
- Ensaf M Abdel-Magiud
- Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | - Emad A Taha
- Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | - Radwa M Bakr
- Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | - Sahar A Ismail
- Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
| | - Sohair K Sayed
- Department of Clinical Pathology, Assiut University, Assiut, Egypt
| | - Mohamed Makboul
- Department of Plastic Surgery, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Suzan Kamel-ElSayed
- Foundational Medical Studies, Oakland University William Beaumont School of Medicine (OUWB School of Medicine), Auburn Hills, MI, USA
| | - Amira A Abdel Motaleb
- Department of Dermatology, Venereology and Andrology, Assiut University, Assiut, Egypt
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7
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Fabbrocini G, Rossi A, Thouvenin MD, Peraud C, Mengeaud V, Bacquey A, Saint Aroman M. Fragility of epidermis: acne and post-procedure lesional skin. J Eur Acad Dermatol Venereol 2017; 31 Suppl 6:3-18. [DOI: 10.1111/jdv.14410] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/09/2017] [Indexed: 12/15/2022]
Affiliation(s)
- G. Fabbrocini
- Department of Clinical Medicine and Surgery; Section of Dermatology; University of Naples; Naples Italy
| | - A.B. Rossi
- Clinical Skin Research Center; Pierre Fabre Dermo-Cosmétique; Toulouse France
- Dermatology Department; Toulouse University Hospital; Toulouse France
| | - M.-D. Thouvenin
- Clinical Skin Research Center; Pierre Fabre Dermo-Cosmétique; Toulouse France
| | - C. Peraud
- Clinical Skin Research Center; Pierre Fabre Dermo-Cosmétique; Toulouse France
| | - V. Mengeaud
- Clinical Skin Research Center; Pierre Fabre Dermo-Cosmétique; Toulouse France
| | - A. Bacquey
- Clinical Skin Research Center; Pierre Fabre Dermo-Cosmétique; Toulouse France
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8
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Abdel-Motaleb AA, Abu-Dief EE, Hussein MRA. Dermal morphological changes following salicylic acid peeling and microdermabrasion. J Cosmet Dermatol 2017; 16:e9-e14. [DOI: 10.1111/jocd.12315] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Amira A Abdel-Motaleb
- Faculty of Medicine; Department of Dermatology, Venereology and Andrology; Assiut University; Assiut Egypt
| | - Eman E Abu-Dief
- Faculty of Medicine; Department of Histology; Sohag University; Sohag Egypt
| | - Mahmoud RA Hussein
- Faculty of Medicine; Department of Pathology; Assiut University; Assiut Egypt
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9
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Zhao Q, Dai C, Fan S, Lv J, Nie L. Synergistic efficacy of salicylic acid with a penetration enhancer on human skin monitored by OCT and diffuse reflectance spectroscopy. Sci Rep 2016; 6:34954. [PMID: 27721398 PMCID: PMC5056361 DOI: 10.1038/srep34954] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 09/20/2016] [Indexed: 11/09/2022] Open
Abstract
Salicylic acid (SA) has been frequently used as a facial chemical peeling agent (FCPA) in various cosmetics for facial rejuvenation and dermatological treatments in the clinic. However, there is a tradeoff between therapeutic effectiveness and possible adverse effects caused by this agent for cosmetologists. To optimize the cosmetic efficacy with minimal concentration, we proposed a chemical permeation enhancer (CPE) azone to synergistically work with SA on human skin in vivo. The optical properties of human skin after being treated with SA alone and SA combined with azone (SA@azone) were successively investigated by diffuse reflectance spectroscopy (DRS) and optical coherence tomography (OCT). Our results revealed that as the SA concentration increased, the light reflectance decreased and the absorption increased. We also found that SA@azone exhibited a synergistic effect on enhancing light penetration and OCT imaging depth. We demonstrated that the combination of DRS and OCT techniques could be used as a noninvasive, rapid and accurate measurement method to monitor the subtle changes of skin tissue after treatment with FCPA and CPE. The approach will greatly benefit the development of clinical cosmetic surgery, dermatosis diagnosis and therapeutic effect inspection in related biomedical studies.
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Affiliation(s)
- Qingliang Zhao
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Cuixia Dai
- College of Physics, Shanghai Institute of Technology, Shanghai 201418, China
| | - Shanhui Fan
- College of Life Information Science and Instrument Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China
| | - Jing Lv
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Liming Nie
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
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Meaike JD, Agrawal N, Chang D, Lee EI, Nigro MG. Noninvasive Facial Rejuvenation. Part 3: Physician-Directed-Lasers, Chemical Peels, and Other Noninvasive Modalities. Semin Plast Surg 2016; 30:143-50. [PMID: 27478423 DOI: 10.1055/s-0036-1584818] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A proper knowledge of noninvasive facial rejuvenation is integral to the practice of a cosmetic surgeon. Noninvasive facial rejuvenation can be divided into patient- versus physician-directed modalities. Patient-directed facial rejuvenation combines the use of facial products such as sunscreen, moisturizers, retinoids, α-hydroxy acids, and various antioxidants to both maintain youthful skin and rejuvenate damaged skin. Physicians may recommend and often prescribe certain products, but patients are in control with this type of facial rejuvenation. On the other hand, physician-directed facial rejuvenation entails modalities that require direct physician involvement, such as neuromodulators, filler injections, laser resurfacing, microdermabrasion, and chemical peels. With the successful integration of each of these modalities, a complete facial regimen can be established and patient satisfaction can be maximized. This article is the last in a three-part series describing noninvasive facial rejuvenation. Here the authors review the mechanism, indications, and possible complications of lasers, chemical peels, and other commonly used noninvasive modalities.
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Affiliation(s)
- Jesse D Meaike
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Nikhil Agrawal
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Daniel Chang
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Edward I Lee
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
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Kim SJ, Baek JH, Koh JS, Bae MI, Lee SJ, Shin MK. The effect of physically applied alpha hydroxyl acids on the skin pore and comedone. Int J Cosmet Sci 2015; 37:519-25. [PMID: 26032934 DOI: 10.1111/ics.12244] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 03/06/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Alpha hydroxy acids (AHA) have been recognized as commonly used therapy for acne. Our studies examined whether an additional effect of physical treatment using chemical peeling combined with negative pressure and compared with AHA treatment only occurs in acne-prone subjects. METHODS The chemical peeling agent used 4% of an AHA solution (mixture of 1000 mL of carbonated water, 20 mL of glycolic acid and 20 mL of lactic acid). All subjects' faces were randomly divided into test and control groups. The test group was treated with chemical peeling combined with a physical effect, and the control group applied chemical peeling alone. For the 23 healthy females (average age: 30.17 ± 5.06 year), we measured sebum output level by light transmission, pore area and number by optical image analyser, and comedone counting before treatment and at 1, 2 and 4 weeks after a single treatment. RESULTS Compared to the before treatment, whiteheads and blackheads were significantly decreased at 1, 2 and 4 weeks in the test group (P < 0.05), but for the control group, whiteheads and blackheads showed a tendency to decrease at 1, 2 and 4 weeks. Also at 1 week, whiteheads and blackheads of the test group significantly decreased compared to the control group (P < 0.05). Pore area and number significantly decreased at 1 week (P < 0.05), and the sebum output level was significantly decreased at 4 weeks (P < 0.05) only in the test group, which did not show any significant group difference for individual parameters. CONCLUSION 4% AHA solution combined with a physical effect had rapidly improving effects on whiteheads and blackheads synergistically. Combined physical therapy may have more impact on pore size and seborrhoea.
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Affiliation(s)
- S J Kim
- DERMAPRO LTD., Skin Research Center, 30, Bangbaejoongang-Ro, Seocho Gu, Seoul, Korea
| | - J H Baek
- DERMAPRO LTD., Skin Research Center, 30, Bangbaejoongang-Ro, Seocho Gu, Seoul, Korea
| | - J S Koh
- DERMAPRO LTD., Skin Research Center, 30, Bangbaejoongang-Ro, Seocho Gu, Seoul, Korea
| | - M I Bae
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - S J Lee
- Arumdaun Nara Dermatologic Clinic, Seoul, Korea
| | - M K Shin
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
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12
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Kang BK, Choi JH, Jeong KH, Park JM, Suh DH, Lee SJ, Shin MK. A study of the effects of physical dermabrasion combined with chemical peeling in porcine skin. J COSMET LASER THER 2014; 17:24-30. [DOI: 10.3109/14764172.2014.968580] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Prestes PS, Oliveira MMMD, Leonardi GR. Randomized clinical efficacy of superficial peeling with 85% lactic acid versus 70% glycolic acid. An Bras Dermatol 2014; 88:900-5. [PMID: 24474097 PMCID: PMC3900339 DOI: 10.1590/abd1806-4841.20131888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 01/04/2013] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND: Peeling is a procedure which aims to accelerate the process of
skin exfoliation. OBJECTIVES Development of formulations containing lactic acid at 85% or glycolic acid at 70%
and the evaluation of these formulations on clinical efficacy in reduction of fine
wrinkles. METHODS Preliminary stability tests were carried out and an in vivo
study was performed with three groups with 9 representatives each. One
was the control group, which used only sunscreen; another one used lactic
acid+sunscreen, and the last group used acid glycolic+sunscreen. Clinical efficacy
was assessed with a CCD color microscope, through the digitization of images
before and after treatment. The applications were carried out by a dermatologist,
once a mont h every 30 days, during 3 months. The area with wrinkles was
calculated by planimetry point counting, in accordance with Mandarin-de-Lacerda.
RESULTS The formulations were stable in the visual and Ph evaluation. There was no
improvement in the control group; for lactic acid, there was significant
improvement after the second peeling application on the outer lateral area of the
right eye and after the third application on the outer lateral area of the left
eye. For the glycolic acid group, there was significant improvement in the outer
lateral area of the left eye after the first application, and of the right eye
region, after three applications. The formulations used must be kept under
refrigeration and should be manipulated every 30 days. CONCLUSIONS Both peelings were effective in reducing fine wrinkles of the outer lateral eye
area after three applications (p≤0.05%). It was observed that peeling efficacy in
the external-lateral region of one eye might be different compared with that in
skin of the external-lateral region of the other eye, relative to the speed of
skin improvement.
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Affiliation(s)
- Paula Souza Prestes
- Health Sciences College, Methodist University of Piracicaba, PiracicabaSP, Brazil, MSc, Health Sciences College, Methodist University of Piracicaba - Piracicaba (SP), Brazil
| | | | - Gislaine Ricci Leonardi
- Institute of Environmental Chemistry and Pharmaceutical Sciences, Federal University of São Paulo, São PauloSP, Brazil, Doctor, Institute of Environmental Chemistry and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP). Post-Graduate in Translational Medicine - Federal University of São Paulo (UNIFESP), São Paulo (SP), Brazil
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14
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Saad El-Dien HM, Abdelwahed Hussein MR, El-Oteify M. Sensory innervation of the female human umbilical skin: morphological studies. Ultrastruct Pathol 2011; 37:62-9. [PMID: 21843057 DOI: 10.3109/01913123.2011.553351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Sensory stimuli are conducted by several cutaneous sensory nerves and tactile corpuscles. The latter are specialized sensory organs that represent the starting point of many afferent sensory pathways. To date, our knowledge about the distribution of the sensory innervation in the umbilical skin of females is incomplete. AIM OF THE STUDY To elucidate the morphology of the cutaneous innervation of the normal female umbilical skin. MATERIALS AND METHODS Biopsies of normal umbilical skin were obtained from female patients undergoing umbilical hernial repair. The specimens were processed for both immunohistological (antibodies against PGP9.5, pan-neuronal marker, and S-100 protein, marker of Schwann cells) and ultrastructural (transmission electron microscopy) examinations. RESULTS The authors found abundant genital end-bulb-like structures, numerous epidermal and dermal Merkel cells, Meissner and Ruffini corpuscles, intraepidermal nerve terminals, and multiple free nerve endings surrounding the ducts and acini of the sweat glands. CONCLUSIONS The umbilical skin of females has abundant sensory innervation similar to that of the glans penis.
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Affiliation(s)
- Heba M Saad El-Dien
- Department of Histology, Faculty of Medicine, Assiut University, Assiut, Egypt.
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Analysis of the vascular profile and CD99 protein expression in the partial and complete hydatidiform moles using quantitative CD34 immunohistochemistry. Exp Mol Pathol 2010; 89:343-50. [DOI: 10.1016/j.yexmp.2010.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 07/03/2010] [Accepted: 07/06/2010] [Indexed: 11/24/2022]
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