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Park SJ, Yoo KH. One-Year Safety Evaluation of New Hyaluronic Acid Fillers (YYS Series): A Prospective, Multicenter, Observational Study. Dermatol Surg 2024:00042728-990000000-00752. [PMID: 38595129 DOI: 10.1097/dss.0000000000004190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
BACKGROUND With the continuous increasing availability of new filler products, each hyaluronic acid filler brand has distinctive pharmacokinetics, which may be associated with different complications. Therefore, the long-term safety of new generations of fillers should be evaluated. OBJECTIVE This prospective, multicenter, observational, postmarketing study (ClinicalTrials.gov identifier: NCT04738019) aimed to investigate the incidence of delayed-onset nodules and adverse reactions after the injection of new hyaluronic acid fillers (YYS series) into the facial skin. METHODS Subjects scheduled to receive an injection YYS series filler were followed up for 52 weeks. The authors aimed to determine the incidence of a self-reported delayed-onset nodule-a visible or palpable nodule or mass at the injection site that was detected beyond the 14th day following the injection-during the 1-year follow-up period. RESULTS Among the 1,022 subjects who received an injection of the YYS series, the incidences of delayed-onset nodules were 0% for YYS 360, YYS 540, and YYS 720. A 0.21% incidence (1 delayed hypersensitivity reaction) of a delayed-onset adverse reaction was noted for YYS 720, although none were reported for YYS 360 and YYS 540. CONCLUSION In this study, a notably low frequency of adverse reactions associated with the YYS series was observed.
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Affiliation(s)
- Su Jung Park
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong-si, Republic of Korea
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Seok J, Koh YG, Hong JK, Yun SH, Kim DH, Son HS, Choi SY, Yoo KH, Lee YW, Kim BJ. Efficacy and Safety of PrabotulinumtoxinA in Subjects With Benign Masseteric Hypertrophy: A Double-Blind, Randomized, Placebo-Controlled, Multicenter, Phase 3 Trial and Open-Label Extension Study. Dermatol Surg 2024:00042728-990000000-00717. [PMID: 38518110 DOI: 10.1097/dss.0000000000004146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
BACKGROUND Despite the widespread use of botulinum toxin (BTX) injection for the treatment of masseter muscle hypertrophy (MMH), there is no standard treatment option. OBJECTIVE We report the efficacy and safety for BTX in MMH over a period of 48 weeks. METHODS In double-blinded, placebo-controlled phase 3 trials, 180 patients (randomized 1:1) received treatment with placebo (normal saline) or prabotulinumtoxinA (48 units). Masseter muscle thickness (at maximal clenching and resting positions), 3D imaging analysis, and masseter muscle hypertrophy scale grades were analyzed at each time point. After the 24-week CORE study, all patients who met the same criteria of the CORE study at week 24 (n = 114) received only prabotulinumtoxinA, regardless of previous treatment, for an additional 24 weeks (48 weeks in total) for the open-label extension study. RESULTS The largest differences in mean and percent changes from baseline in masseter muscle thickness were observed at 12 weeks, and there were significant differences between the 2 groups at all time points (all p < .001). The effect was independent of the number of injections. No serious adverse event was observed. CONCLUSION PrabotulinumtoxinA could effectively ameliorate MMH without major complications.
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Affiliation(s)
- Joon Seok
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - So Hye Yun
- Daewoong Pharmaceutical, Co., Ltd., Seoul, South Korea
| | - Da Hye Kim
- Daewoong Pharmaceutical, Co., Ltd., Seoul, South Korea
| | - Hyung Seok Son
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
| | - Sun Young Choi
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, South Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
- Research Institute of Medical Science, Konkuk University, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
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Lee JM, Lee JO, Kim Y, Jang YN, Yeon Park A, Kim SY, Han HS, Kim BJ, Yoo KH. Anti-melanogenic effect of exosomes derived from human dermal fibroblasts (BJ-5ta-Ex) in C57BL/6 mice and B16F10 melanoma cells. Pigment Cell Melanoma Res 2024; 37:232-246. [PMID: 37758515 DOI: 10.1111/pcmr.13135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/22/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023]
Abstract
Exosomes are involved in intercellular communication by transferring cargo between cells and altering the specific functions of the target cells. Recent studies have demonstrated the therapeutic effects of exosomes in several skin diseases. However, understanding of the effects of exosomes on anti-pigmentation is limited. Therefore, we investigated whether BJ-5ta exosomes (BJ-5ta-Ex) derived from human foreskin fibroblasts regulate melanogenesis and delineated the underlying mechanism. Interestingly, treatment with BJ-5ta-Ex induced decreased melanin content, tyrosinase (TYR) activity, and expression of melanogenesis-related genes, including microphthalmia-related transcription factor (MITF), TYR, tyrosinase-related protein-1 (TRP1), and tyrosinase-related protein-2 (TRP2). In addition, BJ-5ta-Ex downregulated the cAMP/PKA and GSK-3β/β-catenin signaling pathways and upregulated the MAPK/ERK signaling pathway. Notably, treatment with BJ-5ta-Ex inhibited α-melanocyte-stimulating hormone-induced melanosome transport and decreased the expression of key proteins involved in melanosome transport, namely, rab27a and melanophilin (MLPH). To further confirm the depigmenting effects of BJ-5ta-Ex, we conducted experiments using a three-dimensional reconstituted human full skin model and ultraviolet B (UVB)-irradiated mouse model. Treatment with BJ-5ta-Ex improved tissue brightness and reduced the distribution of melanosomes. In UVB-irradiated mouse ears, BJ-5ta-Ex reduced the number of active melanocytes and melanin granules. These results demonstrate that BJ-5ta-Ex can be useful for the clinical treatment of hyperpigmentation disorders.
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Affiliation(s)
- Jung Min Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Jung Ok Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Yujin Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - You Na Jang
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - A Yeon Park
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Su-Young Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, South Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, South Korea
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Kim KR, Shin SH, Han HS, Yoo KH, Kim BJ, Choi SY. Successful treatment of facial varicella-zoster scars with a combination of a fractional CO 2 laser and pneumatic injector device. Int J Dermatol 2024; 63:260-261. [PMID: 38093408 DOI: 10.1111/ijd.16972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/20/2023] [Accepted: 11/30/2023] [Indexed: 01/19/2024]
Affiliation(s)
- Ka Ram Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Sun Young Choi
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Korea
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Jang YN, Lee JO, Lee JM, Park AY, Kim YJ, Kim SY, Seok J, Yoo KH, Kim BJ. Exosomes derived from human dermal fibroblasts (HDFn-Ex) alleviate DNCB-induced atopic dermatitis (AD) via PPARα. Exp Dermatol 2024; 33:e14970. [PMID: 37975541 DOI: 10.1111/exd.14970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/30/2023] [Accepted: 09/04/2023] [Indexed: 11/19/2023]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease. Skin barrier dysfunction is the initial step in the development of AD. Recently, exosomes have been considered as potential cell-free medicine for skin defects such as aging, psoriasis and wounds. The aim of this study was to investigate the effects of human dermal fibroblast-neonatal-derived exosome (HDFn-Ex) on AD. HDFn-Ex increased the expression of peroxisome proliferator activated receptor α (PPARα) and alleviated the 1-chloro-2,4-dinitrobenzene (DNCB)-mediated downregulation of filaggrin, involucrin, loricrin, hyaluronic acid synthase 1 (HAS1) and HAS2 in human keratinocyte HaCaT cells. However, these effects were inhibited by the PPARα antagonist GW6471. In the artificial skin model, HDFn-Ex significantly inhibited DNCB-induced epidermal hyperplasia and the decrease in filaggrin and HAS1 levels via a PPARα. In the DNCB-induced AD-like mouse model, HDFn-Ex administration reduced epidermis thickening and mast cell infiltration into the dermis compared to DNCB treatment. Moreover, the decreases in PPARα, filaggrin and HAS1 expression, as well as the increases in IgE and IL4 levels induced by DNCB treatment were reversed by HDFn-Ex. These effects were blocked by pre-treatment with GW6471. Furthermore, HDFn-Ex exhibited an anti-inflammatory effect by inhibiting the DNCB-induced increases in IκBα phosphorylation and TNF-α expression. Collectively, HDFn-Ex exhibited a protective effect on AD. Notably, these effects were regulated by PPARα. Based on our results, we suggest that HDFn-Ex is a potential candidate for treating AD by recovering skin barrier dysfunction and exhibiting anti-inflammatory activity.
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Affiliation(s)
- You Na Jang
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Jung Ok Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Jung Min Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - A Yeon Park
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yu Jin Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Su Young Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Joon Seok
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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Choi SY, Shin SH, Seok J, Yoo KH, Kim BJ. Management strategies for vascular complications in hyaluronic acid filler injections: A case series analysis. J Cosmet Dermatol 2023; 22:3261-3267. [PMID: 37694495 DOI: 10.1111/jocd.15990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND As hyaluronic acid (HA) filler injections have become increasingly popular in the esthetic field, so have their side effects. Vascular complications, which can lead to skin necrosis or permanent scarring, are a particularly dangerous complication and occur when the filler is injected directly into a blood vessel or when an adjacent blood vessel is compressed by the filler material. OBJECTIVE To assess the clinical prognosis based on post-procedural management and clinical findings of HA filler vascular complications. METHODS Herein, we present a case series of vascular complications due to HA filler and evaluate their clinical prognosis based on post-procedural management and clinical findings. Clinical assessments were performed using Doppler ultrasound, thermography, and laboratory tests. RESULTS Factors including white blood cell count, the time of treatment initiation, and time of hyaluronidase injection influenced the clinical outcomes. Early recognition and prompt hyaluronidase injection proved crucial in preventing further damage and improving prognosis. CONCLUSION This case series highlights the importance of early detection and appropriate management of HA filler complications. Physicians should be aware of the potential risks associated with fillers and promptly address any adverse effects to achieve optimal clinical outcomes. Further studies are warranted to confirm these findings and refine treatment strategies for the HA filler complications.
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Affiliation(s)
- Sun Young Choi
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Republic of Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Park AY, Lee JO, Jang Y, Kim YJ, Lee JM, Kim SY, Kim BJ, Yoo KH. Exosomes derived from human dermal fibroblasts protect against UVB‑induced skin photoaging. Int J Mol Med 2023; 52:120. [PMID: 37888610 PMCID: PMC10635689 DOI: 10.3892/ijmm.2023.5323] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 09/27/2023] [Indexed: 10/28/2023] Open
Abstract
Exosomes are used as innovative treatment options for repairing skin defects, such as aging, atopic dermatitis and wounds. However, the effects of exosomes obtained from human foreskin fibroblasts BJ‑5ta (BJ‑5ta Exo) on ultraviolet B (UVB)‑mediated photoaging have not been previously reported, at least to the best of our knowledge. Therefore, the present study aimed to investigate the anti‑photoaging effects of BJ‑5ta Exo on UVB radiation in human skin fibroblasts and SKH‑1 hairless mice. The results revealed that BJ‑5ta Exo decreased the production of reactive oxygen species and inhibited the decrease in the expression levels of superoxide dismutase 1 and 2, glutathione peroxidase and catalase following UVB exposure. In addition, BJ‑5ta Exo attenuated the decrease in nuclear factor erythroid 2‑related factor 2 levels induced by UVB rays, indicating its scavenging activity against oxidative stress. Moreover, BJ‑5ta Exo inhibited the UVB‑induced increase in the levels of γH2AX, p53/21 and cleaved PARP, whereas it promoted DNA double‑strand break repair through radiation sensitive 52 and effectively activated the TGF‑β1/Smad pathway. BJ‑5ta Exo also protected against UVB‑induced senescence, as indicated by the downregulation in the levels of senescence‑associated β‑galactosidase and p16. In a mouse model of photoaging, BJ‑5ta Exo prevented the UVB‑induced increase in transepidermal water loss, wrinkle formation and MMP‑1 expression, while also suppressing the UVB‑mediated decrease in collagen type I and elastin levels in the dorsal skin. Overall, the findings of the present study suggest that BJ‑5ta Exo represent an effective anti‑photoaging agent, which can be used as a component in cosmetic products.
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Affiliation(s)
- A Yeon Park
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jung Ok Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Youna Jang
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yu-Jin Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jung Min Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Su-Young Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do 14353, Republic of Korea
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Choi SY, Shin SH, Seok J, Ko EJ, Yoo KH, Kim BJ. Long-pulsed 1,064-nm gallium arsenide laser surgical device treatment for improving symptoms of onychomycosis: a comparative analysis. Int J Dermatol 2023; 62:1492-1498. [PMID: 37830397 DOI: 10.1111/ijd.16869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 09/18/2023] [Accepted: 09/26/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND Onychomycosis is the most common infective nail disease, and treatment includes topical and systemic antifungal medications. Recently, laser therapy has emerged as a therapeutic option for patients who are unable to take oral antifungal agents. We investigated the effectiveness and safety of a novel long-pulsed 1,064-nm gallium arsenide (GaAs) laser surgical device for onychomycosis. METHODS This 24-week single-center, single-blind, active-controlled exploratory clinical study comparatively evaluated the long-pulsed 1,064-nm GaAs laser (Healer1064) with the short-pulsed Nd:YAG laser surgical device in 20 participants randomly assigned to receive either test or control treatment at 4-week intervals during the 12-week treatment period. The rate of clinical improvement was evaluated by two independent dermatologist evaluators using the Onychomycosis Severity Index-score (OSI-score) and Turbidity Scale with standard photographs. Overall improvement and patient satisfaction were evaluated. Safety evaluation included pain intensity and adverse events. RESULTS In 44 (test: 25; control: 19) cases in 19 participants who completed treatment, the clinical improvement rate in the test and control groups was 52.00% (13/52 cases) and 44.44% (9/19 cases), respectively, with significantly lower pain scores in the test than the control group for every treatment visit (P < 0.05) and without severe adverse events. CONCLUSIONS The novel long-pulsed 1,064-nm GaAs laser showed greater, albeit nonsignificant, clinical improvement and was associated with less pain during treatment. Thus, the Healer1064 can provide satisfactory treatment outcomes through painless and effective improvement in onychomycosis symptoms.
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Affiliation(s)
- Sun Young Choi
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Republic of Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Eun Jung Ko
- Department of Dermatology, National Police Hospital, Seoul, Republic of Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Ahn GR, Jang YN, Lee SY, Kim WJ, Han HS, Yoo KH, Bae TH, Barn J, Seok J, Kim BJ. Full-thickness skin rejuvenation by a novel dual-length microneedle radiofrequency device: A proof-of-concept study using human skin. Lasers Surg Med 2023; 55:758-768. [PMID: 37548075 DOI: 10.1002/lsm.23707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/05/2023] [Accepted: 07/03/2023] [Indexed: 08/08/2023]
Abstract
BACKGROUND A novel dual-length microneedle radiofrequency (DLMR) device has been developed to achieve full-thickness skin rejuvenation by stimulating the papillary and reticular dermis simultaneously. This device's dual-level targeting concept need to be validated on human skin, although its clinical efficacy has been demonstrated in a previous study. OBJECTIVES This study evaluated the dual-depth targeting capability and the ability to induce rejuvenation in each layer of vertical skin anatomy, that is, the epidermis, papillary dermis, and reticular dermis, using full-thickness human facial skin samples. METHODS Human facial skin samples were obtained from 13 Asian patients who had facelift surgery. To validate the dual-depth targeting concept, DMLR-treated skin samples were analyzed using a digital microscope, thermal imaging, and hematoloxylin and eosin (H&E) staining immediately after DLMR application. On samples stained with H&E, Masson's tricrome, and Verhoeff-Van Gieson, histological observation and morphometric analysis were performed. Total collagen assay (TCA) and quantitative real-time polymerase chain reaction (qPCR) were used to assess changes in total collagen content and mRNA expression levels of collagen types I/III and vimentin, respectively. RESULTS The DLMR device successfully induced thermal stimulation in the papillary and reticular dermis. The thickness, stacks, and dermal-epidermal junction convolution of the epidermis treated with DLMR were significantly increased. Collagen bundles in the dermis treated with DLMR exhibited a notable increase in thickness, density, and horizontal alignment. Dermal collagen levels were significantly higher in the morphometric and TCA data, as well as in the qPCR data for dermal matrix proteins. CONCLUSIONS Our DLMR device independently and precisely targeted the papillary and reticular dermis, and it appears to be an effective modality for implementing full-thickness rejuvenation.
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Affiliation(s)
- Ga Ram Ahn
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University Hospital, Seoul, South Korea
| | - You Na Jang
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - So Young Lee
- Department of Dermatology, Chung-Ang University Hospital, Seoul, South Korea
| | - Woo Ju Kim
- Department of Plastic Surgery, Chung-Ang University Gwangmyeong Hospital, Seoul, South Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Seoul, South Korea
| | - Tae Hui Bae
- Department of Plastic Surgery, Chung-Ang University Gwangmyeong Hospital, Seoul, South Korea
| | | | - Joon Seok
- Department of Dermatology, Chung-Ang University Hospital, Seoul, South Korea
| | - Beom Joon Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University Hospital, Seoul, South Korea
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Ahn GR, Park HJ, Koh YG, Kim KR, Kim YJ, Lee JO, Seok J, Yoo KH, Lee KB, Kim BJ. The effect of low-intensity cold atmospheric plasma jet on photoaging-induced hyperpigmentation in mouse model. J Cosmet Dermatol 2023; 22:2799-2809. [PMID: 37205626 DOI: 10.1111/jocd.15778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/07/2023] [Accepted: 04/03/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND Cold atmospheric plasma (CAP) produces reactive oxygen/nitrogen species (RONS) in the target and can induce cytoprotective effects by activating hormesis-related pathways when its intensity is in the low range. OBJECTIVES The aim of this study is to evaluate the effect of low-intensified CAP (LICAP) on skin with photoaging-induced hyperpigmentation in an animal model. METHODS Changes in cell viability and RONS production following LICAP treatment were measured. For the in vivo study, 30 hairless mice underwent antecedent photoaging induction followed by the allocated therapy (i.e., LICAP, topical ascorbic acid (AA), or both). During the first 4 weeks of the treatment period (8 weeks), ultraviolet (UV)-B irradiation was concurrently administered. Visual inspection and measurement of the melanin index (MI) were performed to assess the change in skin pigmentation at Weeks 0, 2, 4, 6, and 8. RESULTS RONS production increased linearly until the saturation point. Cell viability was not significantly affected by LICAP treatment. At Week 8, MI was significantly decreased in every treatment group compared with the values at Week 0 and Week 4. The treatment effect of the concurrent therapy group was superior to that of the LICAP and AA groups. CONCLUSION LICAP appears to be a novel modality for photoprotection and pigment reduction in photodamaged skin. LICAP treatment and topical AA application seem to exert a synergistic effect.
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Affiliation(s)
- Ga Ram Ahn
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Hyung Joon Park
- Department of Interdisciplinary Bio/Micro System Technology, College of Engineering, Korea University, Seoul, Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Ka Ram Kim
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Yu Jin Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Jung Ok Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong-Si, Gyeonggi-do, Korea
| | - Kyu Back Lee
- Department of Interdisciplinary Bio/Micro System Technology, College of Engineering, Korea University, Seoul, Korea
- School of Biomedical Engineering, Korea University, Seoul, Korea
| | - Beom Joon Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
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11
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Koh YG, Han HS, Seok J, Choi SY, Li K, Kim BJ, Yoo KH. Combination of baricitinib and conventional immunomodulating therapy for alopecia totalis. Skin Res Technol 2023; 29:e13425. [PMID: 37632179 PMCID: PMC10370322 DOI: 10.1111/srt.13425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 07/16/2023] [Accepted: 07/19/2023] [Indexed: 08/27/2023]
Affiliation(s)
- Young Gue Koh
- Department of DermatologyChung‐Ang University College of MedicineSeoulRepublic of Korea
| | - Hye Sung Han
- Department of DermatologyChung‐Ang University Gwangmyeong Hospital, Chung‐Ang University College of Medicine, Gwangmyeong‐siGyeonggi‐doRepublic of Korea
| | - Joon Seok
- Department of DermatologyChung‐Ang University College of MedicineSeoulRepublic of Korea
| | - Sun Young Choi
- Department of DermatologyChung‐Ang University Gwangmyeong Hospital, Chung‐Ang University College of Medicine, Gwangmyeong‐siGyeonggi‐doRepublic of Korea
| | - Kapsok Li
- Department of DermatologyChung‐Ang University College of MedicineSeoulRepublic of Korea
| | - Beom Joon Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulRepublic of Korea
| | - Kwang Ho Yoo
- Department of DermatologyChung‐Ang University Gwangmyeong Hospital, Chung‐Ang University College of Medicine, Gwangmyeong‐siGyeonggi‐doRepublic of Korea
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12
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Koh YG, Seok J, Park JW, Kim KR, Yoo KH, Kim YJ, Kim BJ. Efficacy and safety of oral palmitoleic acid supplementation for skin barrier improvement: A 12-week, randomized, double-blinded, placebo-controlled study. Heliyon 2023; 9:e16711. [PMID: 37292315 PMCID: PMC10245245 DOI: 10.1016/j.heliyon.2023.e16711] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/10/2023] Open
Abstract
Background Palmitoleic acid (omega-7) has been reported to be effective primarily for metabolic disorders. Recently, it has been reported to help improve quality of life (QoL) by improving skin symptoms. Objective The aim of this randomized, double-blinded, placebo-controlled clinical study is to evaluate the efficacy and safety of oral palmitoleic acid in improving skin barrier, elasticity, and wrinkle formation in adult women. Methods In this randomized, double-blind, placebo-controlled clinical study, 90 healthy participants were enrolled and received 500 mg/day palmitoleic acid (intervention) or corn oil without palmitoleic acid (control) for 12 weeks. Skin hydration and transepidermal water loss and skin elasticity, surface roughness, eye wrinkle volume, and wrinkle severity were measured at 6-week intervals to assess the skin barrier function and efficacy in wrinkle improvement, respectively. Results After 12 weeks, skin hydration and transepidermal water loss significantly improved in the intervention group compared to the control group. Skin elasticity, surface roughness, eye wrinkle volume, wrinkle severity, and participant-assessed clinical improvement score did not significantly improve compared with the control group. Conclusion Oral palmitoleic acid effectively improves the skin barrier function improvement, which may enhance QoL in aging adults.
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Affiliation(s)
- Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Ka Ram Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, Republic of Korea
| | - Yong Joon Kim
- Oracle Clinic, Gwangjin-gu, Seoul, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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13
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Jang YN, Seok J, Park AY, Lee WG, Lee JM, Kim YJ, Kim SY, Yoo KH, Lee JO, Kim BJ. A comparison of dyeing efficacy between hair-oxidation-based and hair-coating-based shampoos for the treatment of gray hair. Skin Res Technol 2023; 29:e13383. [PMID: 37357647 PMCID: PMC10250964 DOI: 10.1111/srt.13383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/25/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND The process of hair dyeing causes hair damage, and periodic re-dyeing is required for newly grown hair. To avoid these hassles, hair color shampoos have been developed and are widely used. In this study, we compared the effects of two hair color shampoos with different dyeing principles to analyze the function of hair color shampoos. We analyzed hair tresses treated by hair-oxidation- and hair-coating-based shampoos. MATERIALS AND METHODS We measured the color, tensile properties, softness, elasticity, gloss, moisture content, and protein content of the hair tresses dyed with color shampoos. The hair structures were analyzed by scanning and transmission electron microscopies (SEM and TEM) and a hydroxy radical-based method. RESULTS The shampoo based on hair coating enhanced the hair dyeing effect and roughness, whereas that based on hair oxidation improved the color retention and moisture content in the hair tresses. Frictional resistance, gloss, and elasticity of the hair tresses were similar for the two products. However, according to the results of the protein loss test, TEM, and hydroxyl radical staining, the shampoo based on hair oxidation showed a longer dyeing retention compared to that based on hair coating but caused cuticle damage. CONCLUSION These results show that the two shampoos with different dyeing principles exhibit different hair dyeing abilities and hair health indices. Therefore, we recommend that hair color shampoos should be used according to the requirements of an individual.
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Affiliation(s)
- You Na Jang
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
| | - Joon Seok
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - A Yeon Park
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
| | - Woo Geon Lee
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Jung Min Lee
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
| | - Yu Jin Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
| | - Su Young Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
| | - Kwang Ho Yoo
- Department of DermatologyChung‐Ang University Gwangmyeong HospitalChung‐Ang University College of MedicineGwangmyeong‐siSouth Korea
| | - Jung Ok Lee
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Beom Joon Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
- Department of MedicineGraduate SchoolChung‐Ang UniversitySeoulSouth Korea
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14
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Han HS, Hong JK, Yoo KH, Seo SJ. Combination of Non-Ablative Fractional Laser with Q-Switched Laser for the Treatment of Becker's Nevus: Efficacy and Limitations. Ann Dermatol 2023; 35:56-60. [PMID: 36750459 PMCID: PMC9905864 DOI: 10.5021/ad.20.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 11/18/2020] [Accepted: 12/19/2020] [Indexed: 01/31/2023] Open
Abstract
Becker's nevus (BN) is a benign hamartoma that may present as a distressing cosmetic problem. The treatment of BN poses a significant challenge as current therapeutic modalities are suboptimal and have an increased risk of adverse effects, such as scarring and dyspigmentation. We present the use of non-ablative fractional laser therapy combined with Q-switched Nd:YAG laser as a possible therapeutic option for BN treatment and review relevant literature to discuss its efficacy and limitations.
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Affiliation(s)
- Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
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15
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Koh YG, Hong JK, Shin SH, Han HS, Mun SK, Yoo KH, Kim BJ. A case report of 595 nm pulsed dye laser for the prevention and management of scar developed after vascular complication of filler application. Dermatol Ther 2022; 35:e15764. [PMID: 35945913 DOI: 10.1111/dth.15764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/17/2022] [Accepted: 08/08/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hye Sung Han
- Department of Dermatology, Seoul National University, Bundang Hospital, Seongnam, Korea
| | - Seog-Kyun Mun
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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16
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Choi SY, Park JW, Koh YG, Jung YJ, Huh YJ, Ko EJ, Yoo KH, Seok J, Kim SY, Jue MS, Ko JY, Kim BJ. Cryolipolysis for abdominal subcutaneous fat reduction: a prospective, multicenter, single arm, clinical study. Dermatol Ther 2022; 35:e15717. [PMID: 35837791 DOI: 10.1111/dth.15717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Various treatment methods are used for noninvasive body contouring. OBJECTIVE To evaluate the efficacy and safety of a newly designed cryolipolysis device using a three-dimensional cooling method for abdominal fat reduction. METHODS Twenty-five participants with clinically apparent abdominal fat tissue participated in the study. The thickness of fat tissue below the umbilicus level was measured using a caliper at baseline and 12 weeks after the first treatment. The height of abdominal subcutaneous fat tissue on ultrasonography and participant satisfaction were assessed at every visit for 16 weeks. All adverse events (AEs) during the study period were recorded. P values <0.05 were considered statistically significant. RESULTS Twenty-four participants completed this study; the mean BMI of participants was 29.34±2.36 kg/m2 . The mean thickness of abdominal subcutaneous fat was significantly lower at 12 weeks (40.4±6.8 mm, p<0.001) than at baseline (49.3±8.5 mm). Differences in the height of abdominal subcutaneous fat compared to that at baseline were 1.02±0.41 cm (12 weeks, p<0.001) and 1.13±0.44 cm (16 weeks, p<0.001). Rates of abdominal subcutaneous fat reduction at 12 and 16 weeks compared to that at baseline were 28.45% and 31.13%, respectively. The ratio of abdominal circumference to hip circumference at 12 and 16 weeks was significantly decreased compared to that at baseline. Most participants (95.8%) reported improvement in satisfaction scores at 16 weeks. There were no serious AEs during the entire study period. CONCLUSION The study demonstrated the efficacy of a noninvasive cryolipolysis device using a three-dimensional cooling method for reducing abdominal subcutaneous fat. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sun Young Choi
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Jae Wan Park
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Young Gue Koh
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - You Jin Jung
- Department of Dermatology, College of Medicine, Hanyang University, #222-1, Wangsimni-ro, Sungdong-gu, Seoul, Korea
| | - Yun Jung Huh
- Department of Dermatology, College of Medicine, Hanyang University, #222-1, Wangsimni-ro, Sungdong-gu, Seoul, Korea
| | - Eun Jung Ko
- Department of Dermatology, National Police Hospital, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, Korea
| | - Joon Seok
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | | | - Mihn Sook Jue
- Department of Dermatology, College of Medicine, Hanyang University, #222-1, Wangsimni-ro, Sungdong-gu, Seoul, Korea
| | - Joo Yeon Ko
- Department of Dermatology, College of Medicine, Hanyang University, #222-1, Wangsimni-ro, Sungdong-gu, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
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17
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Park JW, Choi SY, Kim KR, Jin M, Seok J, Yoo KH, Kim BJ. A randomized, participant-and evaluator-blinded, matched-pair prospective study to compare the safety and efficacy between polycaprolactone-based fillers in the correction of nasolabial folds. Dermatol Ther 2022; 35:e15508. [PMID: 35419911 DOI: 10.1111/dth.15508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/10/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Polycaprolactone (PCL)-based fillers are widely used for skin rejuvenation and wrinkle reduction. OBJECTIVE To compare the efficacy and safety of newly developed PCL-based fillers (SYB filler®; SF-01) and widely used existing PCL-based fillers (Ellansé-M®) for correction of moderate-to-severe nasolabial folds. METHODS In a randomized, participant-and evaluator-blinded, matched-pair, prospective study, participants were randomized for injections of SF-01 or Ellansé-M® in both nasolabial folds. Efficacy was evaluated using the Wrinkle Severity Rating Scale (WSRS), Global Esthetic Improvement Scale (GAIS), and a 3-dimensional (3D) scanner. All adverse events (AEs) were examined and reported. RESULTS At month 12, both SF-01-and Ellansé-M®-treated groups showed statistically significant improvements in the WSRS, GAIS, and 3D scanner scores compared to baseline. The difference in changes in WSRS scores at month 12 between the two groups was 0.08 ± 0.34 compared to baseline. The upper limit of the 95.0% confidence interval was 0.0031, which was lower than the predefined margin for non-inferiority (0.35). All AEs were injection site-related (swelling, pain, and erythema) and disappeared within 30 min after the procedure. CONCLUSION SF-01 was non-inferior to Ellansé-M® and demonstrated favorable efficacy and safety at 12 months after correcting moderate-to-severe nasolabial folds.
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Affiliation(s)
- Jae Wan Park
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Sun Young Choi
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Ka Ram Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Miryung Jin
- Samyang Holdings Corp, Clinical & Regulatory Affairs Team, Gyeonggi, Republic of Korea
| | - Joon Seok
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
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18
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Park JW, Shin SH, Koh YG, Seok J, Choi SY, Li K, Kim BJ, Yoo KH. Keloid of earlobe treated with a combination of pneumatic injector device and CO 2 fractional laser. Dermatol Ther 2022; 35:e15474. [PMID: 35352443 DOI: 10.1111/dth.15474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/23/2022] [Accepted: 03/28/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Young Choi
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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19
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Koh YG, Park JW, Shin SH, Kim BJ, Yoo KH. Dupilumab for the treatment of refractory allergic contact dermatitis from rubber/latex concomitant with atopic dermatitis. J Eur Acad Dermatol Venereol 2022; 36:e640-e643. [PMID: 35338674 DOI: 10.1111/jdv.18099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Gyeonggi-do, Republic of Korea
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Han HS, Park JW, Kim SY, Yoo KH, Choi SY, Kim BJ. Safety and efficacy of high‐intensity focused ultrasound (
HIFU
) for treatment of periorbital, perioral, and neck wrinkles: Prospective open single‐centre single‐arm confirmatory clinical trial. Dermatol Ther 2022; 35:e15420. [DOI: 10.1111/dth.15420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/10/2022] [Accepted: 03/02/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Hye Sung Han
- Department of Dermatology College of Medicine, Chung‐Ang University Hospital Seoul Korea
| | - Jae Wan Park
- Department of Dermatology College of Medicine, Chung‐Ang University Hospital Seoul Korea
| | | | - Kwang Ho Yoo
- Department of Dermatology College of Medicine, Chung‐Ang University Hospital Seoul Korea
| | - Sun Young Choi
- Department of Dermatology Seoul Paik Hospital, Inje University College of Medicine Seoul Korea
| | - Beom Joon Kim
- Department of Dermatology College of Medicine, Chung‐Ang University Hospital Seoul Korea
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21
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Hong JK, Shin SH, Yoo KH, Li K, Seo SJ. Symmetric Drug-Related Intertriginous and Flexural Exanthema-like Eruption Related to Coronavirus Disease 2019 Vaccine. Contact Dermatitis 2022; 87:91-93. [PMID: 35243643 PMCID: PMC9111761 DOI: 10.1111/cod.14092] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Jun Ki Hong
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Sun Hye Shin
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Kapsok Li
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Seong Jun Seo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, South Korea
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22
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Yoo KH, Jeong GJ, Park JH, Park SH, Li K. Estimation error of the body surface area in psoriasis: A comparative study of physician and computer-assisted image analysis (Image J). Clin Exp Dermatol 2022; 47:1298-1306. [PMID: 35187683 DOI: 10.1111/ced.15148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Assessing the area involved, i.e., the body surface area (BSA), is essential in diagnosing the disease severity of psoriasis. However, the BSA estimated by physicians tends to be over-estimated and has shown high inter- and intra-rater variabilities. Furthermore, no reports suggesting the cause and clinical significance of overestimating the BSA results exist in psoriasis patients. OBJECTIVES We aimed to investigate the errors in estimating the BSA affected by psoriasis by comparing the physicians' results with those of computer-assisted image analysis (CAIA) and provide suggestions regarding the clinical implications of such errors. METHODS Using 43 images, 36 physicians visually estimated the BSA of psoriasis. Subsequently, the images were evaluated using CAIA (Image J). The BSA values determined by the physicians and CAIA were compared and matched. The BSA percentage was also graded from 0 to 6: no lesion (0), 1-9% (1), 10-29% (2), 30-49% (3), 50-69% (4), 70-89% (5), and 90-100% (6). Each grade range was divided, with the bottom and top 50% defined as the "first half" and "second half," respectively. RESULTS The average proportion of correct assessments by physicians was 49.4%. Physicians tended to overestimate the area involved by psoriatic lesions by 8.76%±8.82% compared to CAIA. The largest estimation error (proportion incorrect: 75.7%) was observed in Grade 3. Estimations located in the "second half" of the range demonstrated a higher proportion of inaccuracies compared to those in the "first half." An overestimating error occurred in certain morphological characteristics of the psoriatic lesions. CONCLUSIONS Inaccuracy of BSA estimation by physicians may be related that information from the human eye is perceived to be exaggerated compared to the actual size. Further research of using artificial intelligence (AI) technology is needed to reduce quantification error and develop an ideal BSA assessment system. Additionally, education and training are needed for physicians to accurately measure the BSA.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Guk Jin Jeong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Ji Ho Park
- Oaro dermatology clinic, Seoul, South Korea
| | - Soo Ho Park
- Department of Mechanical Engineernig, Carnegie Mellon University, Pittsburgh, U.S.A
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea.,Biomedical Research Institute, Chung-Ang University Hospital, Seoul, South Korea
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Paik SH, Jung JM, Jung CJ, Yang HJ, Son HS, Shin SH, Yoo KH, Lee YW, Kim BJ, Won CH. A Randomized, Double-Blind, Multi-Center, Placebo-controlled, Phase 2 Clinical Trial to Evaluate the Efficacy and Safety of DWJ211 in the Treatment of Moderate to Severe Submental Fat. Dermatol Ther 2022; 35:e15373. [PMID: 35142011 DOI: 10.1111/dth.15373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/05/2022] [Indexed: 11/29/2022]
Abstract
Excessive accumulation of submental fat (SMF) causes a lower face cosmetic problem. A lipolytic injectable has recently been developed as a solution. To investigate the effects and safety of DWJ211 (a newly developed lipolytic injectable) in the reduction of SMF and to identify the optimum dose. In this multi-center, double-blind, placebo-controlled study, subjects with moderate to severe SMF were randomized to injections of DWJ211 0.5%, DWJ211 1%, DWJ211 2% or placebo in the submental area, every 4 weeks, up to week 12. Efficacy was determined by improvements in physician-assisted SMF rating scales (PA-SMFRS) and subject-assisted SMF rating scales (SA-SMFRS) 4 weeks after the last treatment (week 16). Safety was assessed by inquiries, subject diary entries of adverse events, laboratory tests, and vital sign checks. Of 140 enrolled subjects, 136 were included in the analysis. The proportions of subjects who achieved ≥1-grade improvement on the PA-SMFRS were 41.7%, 65.7%, 84.4%, and 72.7%, and the proportions of subjects who achieved ≥1-grade improvement on the SA-SMFRS were 50.0%, 71.4%, 93.8%, and 81.8% for the placebo, DWJ211 0.5%, DWJ211 1%, and DWJ211 2% group, respectively. Adverse drug reactions (ADRs) were more common in each of the treatment groups compared with placebo, with the most common ADR being injection site pain. No subjects experienced any serious adverse events. The 1% DWJ211 dose was beneficial for SMF reduction and had a tolerable safety profile. Thus, we selected 1% as the dose to be tested in a Phase 3 clinical trial. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Seung Hwan Paik
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Joon Min Jung
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Chang Jin Jung
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Hee Joo Yang
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Hyung Seok Son
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Chong Hyun Won
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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24
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Han HS, Park JW, Shin SH, Yoo KH, Sohn YS, Kim BJ. Single-center, assessor-blind study to evaluate the efficacy and safety of DA-5520 topical gel in patients with acne scars: A pilot study. J Cosmet Dermatol 2022; 21:3888-3895. [PMID: 34982507 DOI: 10.1111/jocd.14693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 11/09/2021] [Accepted: 12/10/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Unlike various topical treatment options for acne vulgaris, options for acne scars mostly involve invasive interventions. So far, only a few clinical trials have investigated the effects of topical treatment for acne scars. OBJECTIVES We evaluated the safety and efficacy of DA-5520, a recently developed topical gel for the treatment of different types of acne scars. METHODS A 12-week prospective, randomized, active-controlled, evaluator-blind, single-center study involving 36 participants with acne scars was performed. Participants were randomized into four different groups at a 1:1:1:1 ratio: laser resurfacing with DA-5520 application (test 1); laser resurfacing without DA-5520 application (control 1); comedone extraction with DA-5520 application (test 2); and comedone extraction without DA-5520 application (control 2). For 12 weeks, participants in the two test groups applied DA-5520 twice daily, while participants in the control groups applied moisturizers alone. Participants in the test 1 and control 1 groups received a single session of laser resurfacing at visit 1 (week 0). All participants were followed up at 1, 4, 8, and 12 weeks, and objective scar evaluation using the échelle d'évaluation clinique des cicatrices d'acné (ECCA) score was performed at each visit. RESULTS Clinical improvement of acne scars, confirmed by the ECCA grading scale (1 for atrophic scar and 2 for hypertrophic scar), was observed after using DA-5520 when combined with laser resurfacing or individually, and no associated adverse reactions were noted. CONCLUSIONS Preliminary results of this study revealed that DA-5520 may be a promising new formulation for treating all type of acne scars.
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Affiliation(s)
- Hye Sung Han
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Jae Wan Park
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Sun Hye Shin
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Young Sung Sohn
- Medical information & Clinical research, Dong-A Pharm. Co., Ltd, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, South Korea
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25
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Yoo KH, Thapa N, Kim BJ, Lee JO, Jang YN, Chwae YJ, Kim J. Possibility of exosome‑based coronavirus disease 2019 vaccine (Review). Mol Med Rep 2022; 25:26. [PMID: 34821373 PMCID: PMC8630821 DOI: 10.3892/mmr.2021.12542] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/16/2021] [Indexed: 12/29/2022] Open
Abstract
Coronavirus disease 2019 (COVID‑19) is a global pandemic that can have a long‑lasting impact on public health if not properly managed. Ongoing vaccine development trials involve classical molecular strategies based on inactivated or attenuated viruses, single peptides or viral vectors. However, there are multiple issues, such as the risk of reversion to virulence, inability to provide long‑lasting protection and limited protective immunity. To overcome the aforementioned drawbacks of currently available COVID‑19 vaccines, an alternative strategy is required to produce safe and efficacious vaccines that impart long‑term immunity. Exosomes (key intercellular communicators characterized by low immunogenicity, high biocompatibility and innate cargo‑loading capacity) offer a novel approach for effective COVID‑19 vaccine development. An engineered exosome‑based vaccine displaying the four primary structural proteins of SARS‑CoV‑2 (spike, membrane, nucleocapside and envelope proteins) induces humoral and cell mediated immunity and triggers long‑lasting immunity. The present review investigated the prospective use of exosomes in the development of COVID‑19 vaccines; moreover, exosome‑based vaccines may be key to control the COVID‑19 pandemic by providing enhanced protection compared with existing vaccines.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 06973, Republic of Korea
| | - Nikita Thapa
- CK-Exogene, Inc., Seongnam, Gyeonggi-do 13201, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 06973, Republic of Korea
| | - Jung Ok Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 06973, Republic of Korea
| | - You Na Jang
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul 06973, Republic of Korea
| | - Yong Joon Chwae
- Department of Microbiology, Ajou University School of Medicine, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Jaeyoung Kim
- CK-Exogene, Inc., Seongnam, Gyeonggi-do 13201, Republic of Korea
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26
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Lee DH, Ko HC, Na CH, Roh JY, Park KY, Park YL, Park YM, Park CO, Park CW, Bae Y, Seo YJ, Son SW, Ahn J, Jung HJ, Yang JM, Won CH, Yoo KH, Lew BL, Lee SE, Lee SY, Lee SC, Lee YW, Lee JH, Jang YH, Jeon J, Han TY, Cho SH. Real-World Experience of Long-Term Dupilumab Treatment for Atopic Dermatitis in Korea. Ann Dermatol 2022; 34:157-160. [PMID: 35450314 PMCID: PMC8989900 DOI: 10.5021/ad.2022.34.2.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/27/2021] [Accepted: 01/12/2022] [Indexed: 11/08/2022] Open
Affiliation(s)
- Dong Hun Lee
- Department of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Chang Ko
- Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
| | - Chan Ho Na
- Department of Dermatology, College of Medicine, Chosun University, Gwangju, Korea
| | - Joo Young Roh
- Department of Dermatology, Gil Medical Center, Gachon University School of Medicine, Incheon, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young Lip Park
- Department of Dermatology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Young Min Park
- Department of Dermatology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang Ook Park
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Chun Wook Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Youin Bae
- Department of Dermatology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Young-Joon Seo
- Department of Dermatology, School of Medicine, Chungnam National University, Daejeon, Korea
| | - Sang Wook Son
- Department of Dermatology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Jiyoung Ahn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - Hye Jung Jung
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - Jun-Mo Yang
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chong Hyun Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Bark Lynn Lew
- Department of Dermatology, Kyung Hee University College of Medicine, Seoul, Korea
| | - Sang Eun Lee
- Department of Dermatology, Gangnam Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Yul Lee
- Department of Dermatology, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Seung-Chul Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - Ji Hyun Lee
- Department of Dermatology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong Hyun Jang
- Department of Dermatology, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jiehyun Jeon
- Department of Dermatology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Tae-Young Han
- Department of Dermatology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea
| | - Sang Hyun Cho
- Department of Dermatology, The Catholic University of Korea, Incheon St. Mary’s Hospital, Incheon, Korea
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27
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Shin SH, Hong JK, Hong SA, Li K, Yoo KH. Pityriasis rosea shortly after mRNA-1273 COVID-19 vaccination. Int J Infect Dis 2021; 114:88-89. [PMID: 34740803 PMCID: PMC8560747 DOI: 10.1016/j.ijid.2021.10.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 01/08/2023] Open
Affiliation(s)
- Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soon Auck Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
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28
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Han HS, Kim JH, Kwon TR, Lee SE, Yoo KH, Li K, Park H, Bae JH, Park SJ, Han J, Kim S, Kim BJ, Jang YN. Evaluation of nail surface topography using a three-dimensional in vivo optical skin imaging system. Skin Res Technol 2021; 27:1035-1042. [PMID: 34411341 DOI: 10.1111/srt.13054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 04/20/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The analysis of nail surface topography is a subject of ever-increasing interest in dermatology, especially in cosmetic studies. However, there is no accurate and scientifically sound instrumental method that can identify and provide quantitative data on nail surface topography. MATERIALS AND METHODS The right index fingers of 78 healthy individuals were examined. The severity of nail roughness was rated by two independent dermatologists on a scale of 1 to 3. Using the phaseshift rapid in vivo measurement of the skin (PRIMOS) system, three-dimensional microtopography was performed, and the roughness parameter values were calculated and evaluated. The relationship between clinical nail roughness grade and nail roughness parameter values obtained utilizing PRIMOS was evaluated. RESULTS A moderate correlation was found between the roughness parameter values and the clinical roughness grade. Our study showed that an overall relationship exists between the nail roughness parameter values obtained using PRIMOS and clinically observed nail surface changes. CONCLUSION With further studies, PRIMOS could be a valuable tool for clinicians and researchers for conducting an accurate and objective patient assessment in daily practice and demonstrating effectiveness of different therapies for nail dystrophy or evaluating cosmetic effects of various topical treatments in future clinical trials.
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Affiliation(s)
- Hye Sung Han
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jong Hwan Kim
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Tae-Rin Kwon
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sung Eun Lee
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | | | - Joon Ho Bae
- Nail Care Center, JC Korea, Gyunggi-do, Korea
| | | | | | | | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - You Na Jang
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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29
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Park SJ, Han HS, Shin SH, Yoo KH, Li K, Kim BJ, Seo SJ, Park KY. Adverse skin reactions due to use of face masks: a prospective survey during the COVID-19 pandemic in Korea. J Eur Acad Dermatol Venereol 2021; 35:e628-e630. [PMID: 34131961 PMCID: PMC8447351 DOI: 10.1111/jdv.17447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S H Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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30
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Hong JK, Han HS, Jang YN, Yoo KH, Kim BJ. A foreign body granuloma after dermal filler injection successfully treated with a combination of high-intensity focused ultrasound and quantum molecular resonance technology device. Skin Res Technol 2021; 27:1169-1171. [PMID: 34032323 DOI: 10.1111/srt.13055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/19/2021] [Accepted: 04/20/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Ki Hong
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Hye Sung Han
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - You Na Jang
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
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31
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Han HS, Park JW, Yoo KH, Kim BJ. A phase I clinical trial to evaluate the safety of HU-045 for treating moderate-to-severe glabellar lines: a pilot study. J Eur Acad Dermatol Venereol 2021; 35:e614-e617. [PMID: 34014571 DOI: 10.1111/jdv.17369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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32
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Park SJ, Park JW, Ahn GR, Choi SY, Yoo KH, Li K, Kim BJ. A study of the microbiological profile of filler-induced skin necrosis. Clin Exp Dermatol 2021; 46:901-905. [PMID: 33763910 DOI: 10.1111/ced.14653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/08/2021] [Accepted: 03/19/2021] [Indexed: 11/28/2022]
Abstract
Skin necrosis is one of the most severe complications following filler injections, and can result in permanent aesthetic defects. Although an increasing number of studies have addressed the management of dermal filler complications, no study has described the spectrum of microbial pathogens. The aim of this study was to delineate the bacterial profile and prognostic factors of filler-related skin necrosis by reviewing the clinical and microbiological features of these patients. A retrospective medical record review of patients undergoing treatment for skin necrosis induced by fillers was conducted. In total, 10 cases were identified, with injection sites being the nasolabial fold (70%; n = 7), nasal dorsum (20%; n = 2) and nasal tip (10%; n = 1). Reviewing the culture results, the true culture-positive rate was found to be 50% after cases of contamination were excluded. To avoid permanent sequelae, all physicians should be aware of possible secondary infections when treating filler-induced skin necrosis.
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Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - G R Ahn
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - S Y Choi
- Department of Dermatology, Seoul Paik Hospital, Inje University, Seoul, South Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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33
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Han HS, Shin SH, Park JW, Li K, Kim BJ, Yoo KH. Changes in skin characteristics after using respiratory protective equipment (medical masks and respirators) in the COVID-19 pandemic among healthcare workers. Contact Dermatitis 2021; 85:225-232. [PMID: 33813749 PMCID: PMC8251455 DOI: 10.1111/cod.13855] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/19/2021] [Accepted: 03/31/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND The coronavirus disease-2019 (COVID-19) outbreak has presented unique dermatologic challenges due to respiratory protective equipment (RPE)-related skin conditions. OBJECTIVE To objectively evaluate the effects of RPE including medical masks and respirators on the skin barrier by measuring various physiological properties of the skin. METHODS A cross-sectional study was designed. Twenty healthy healthcare workers were included in this study. Skin parameters including skin hydration, transepidermal water loss (TEWL), erythema, sebum secretion, pH, and skin temperature were measured in the RPE-covered and RPE-uncovered areas of the face 4 and 8 hours after wearing RPE and 14 hours after not wearing RPE. RESULTS Skin hydration, TEWL, erythema, pH, and skin temperature increased in the RPE-covered areas after wearing RPE for 4 and 8 hours. By contrast, in the RPE-uncovered areas, skin hydration decreased and TEWL, erythema, and pH showed minimal changes over time. Based on the repeated-measure analysis, the changes in skin physiological properties over time were significantly different between RPE-covered and RPE-uncovered areas. CONCLUSION We observed that skin physiological characteristics change with the prolonged use of RPE such as medical masks and respirators. These changes may lead to various adverse skin reactions after long-term use.
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Affiliation(s)
- Hye Sung Han
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Sun Hye Shin
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Jae Wan Park
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Kapsok Li
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Beom Joon Kim
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
| | - Kwang Ho Yoo
- Department of DermatologyChung‐Ang University College of MedicineSeoulSouth Korea
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34
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Park SJ, Park JW, Choi SY, Yoo KH. Use of dermoscopy after punch removal of a veiled sea urchin spine. Dermatol Ther 2021; 34:e14947. [PMID: 33724605 DOI: 10.1111/dth.14947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/22/2021] [Accepted: 03/13/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Su Jung Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Jae Wan Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Sun Young Choi
- Department of Dermatology, Seoul Paik Hospital, Inje University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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35
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Yoo KH, Park SJ, Han HS, Won CH, Lee YW, Kim BJ. Randomized, double-blind, active-controlled, multicentre, phase III clinical trial with two stages to assess the safety and efficacy of letibotulinum toxin a vs. onabotulinum toxin a for subjects with moderate to severe crow's feet. J Eur Acad Dermatol Venereol 2021; 35:1587-1594. [PMID: 33721365 DOI: 10.1111/jdv.17217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/24/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Letibotulinum toxin A (LeBA) was approved by the Ministry of Food and Drug Safety (known as the Korea Food & Drug Administration) for cosmetic indications in 2012. However, the efficacy and safety of this newly introduced LeBA have not been investigated in crow's feet lines (CFL) treatment and standardization before its universal use. OBJECTIVE The aim of this multicentre, double-blind, randomized, parallel, active-controlled Phase III clinical trial with two stages (ClinicalTrials.gov identifier: NCT03408236) was to investigate the non-inferiority of LeBA vs. the existing onabotulinum toxin A (OnBA) for the treatment of CFL. METHODS A total of 240 subjects were randomized to either the test (LeBA) or control (OnBA) group. At the baseline and at weeks 4 while maximum smiling (primary efficacy assessment), 8, 12 and 16, investigator's on-site evaluation, independent evaluator, evaluation by the subjects, subjects' satisfaction assessment and safety assessment were performed. RESULTS At week 4, the response rate of primary efficacy assessment was 69.75% and 68.33% in the test (LeBA) and control (OnBA) groups, respectively, without a significant difference. Other minor secondary evaluation results showed significant differences suggesting that LeBA offered better improvement than OnBA, but the overall results did not show significant differences between the two groups. CONCLUSION This study showed that LeBA was as effective and safe as OnBA for the treatment of CFL at the same doses.
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Affiliation(s)
- K H Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - S J Park
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - H S Han
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - C H Won
- Department of Dermatology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea
| | - Y W Lee
- Department of Dermatology, College of Medicine, Konkuk University Hospital, Seoul, Korea
| | - B J Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul, Korea
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Hong JK, Han HS, Yoo KH. Inflammatory linear verrucous epidermal naevus successfully treated with a combination of triple topical agents (corticosteroid, calcipotriol and 20% urea). Clin Exp Dermatol 2021; 46:940-942. [PMID: 33577097 DOI: 10.1111/ced.14603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/03/2021] [Accepted: 02/10/2021] [Indexed: 11/28/2022]
Affiliation(s)
- J K Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - H S Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Yoo KH, Bang DS, Kim ML, Lee SE, Li K, Kim BJ. Oral evening primrose oil as an adjuvant treatment option in chronic lichenoid dermatitis. Dermatol Ther 2021; 34:e14914. [PMID: 33629429 DOI: 10.1111/dth.14914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/15/2021] [Accepted: 02/22/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Dong Sik Bang
- Department of Dermatology, College of Medicine, Catholic Kwandong University, International St. Mary's Hospital, Incheon, Republic of Korea
| | - Mi Le Kim
- Department of Pediatrics, College of Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - Sung Eun Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Kapsok Li
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
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38
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Han HS, Hong JY, Kwon TR, Lee SE, Yoo KH, Choi SY, Kim BJ. Mechanism and clinical applications of needle-free injectors in dermatology: Literature review. J Cosmet Dermatol 2021; 20:3793-3801. [PMID: 33682249 DOI: 10.1111/jocd.14047] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/01/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Needle-free jet injectors are devices that deliver drugs using a high-speed jet without a needle. Recent studies have significantly increased our understanding of the mechanisms of needle-free jet injectors, and technical advancements have broadened the scope of application of the device. AIMS We aimed to provide an up-to-date review of previous literature regarding the mechanism of action and clinical applications of needle-free jet injectors in dermatology field. METHODS We conducted a PUBMED search for studies on needle-free jet injectors using the following parameters: "Pneumatic injector" OR "needleless injector" OR "needle-free injector" OR "jet injector." Among 191 results, 72 articles focusing on their mechanisms of action, cutaneous delivery patterns, and clinical applications in dermatology were selected for review. RESULTS Significant clinical evidence has been published confirming the potential of needle-free jet injectors in treating various dermatologic conditions. In particular, these devices have the potential to be used in various skin remodeling treatment, especially in skin rejuvenation procedures by injecting various esthetic materials. CONCLUSION As proven by accumulated experience, the applications of NFJIs are not restricted to vaccine or insulin delivery in dermatology field. However, this literature review shows that until now, there are no clinical guidelines that standardize the optimal parameters when using NFJIs on various clinical settings. Therefore, further studies should be performed in order to investigate the full potential of these devices in dermatology, to ensure safe and effective outcomes in clinical practice.
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Affiliation(s)
- Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Ji Yeon Hong
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - Tae Rin Kwon
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Sung Eun Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Sun Young Choi
- Department of Dermatology, Seoul Paik Hospital Inje University College of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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Choi SY, Han HS, Yoo KH, Lee JS, Kim BJ, Lee YW. Reduced pain with injection of hyaluronic acid with pre-incorporated lidocaine for nasolabial fold correction: A multicenter, double-blind, randomized, active-controlled, split-face designed, clinical study. J Cosmet Dermatol 2020; 19:3229-3233. [PMID: 32416026 DOI: 10.1111/jocd.13421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 03/30/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Injection of hyaluronic acid (HA) filler for nasolabial fold (NLF) correction is a popular aesthetic procedure. In relation to HA filler injections, effective pain control for patient comfort is an important concern. OBJECTIVES We compared the pain relief achieved by HA filler with 0.3% lidocaine (HAF-Lidocaine) with that achieved by HA filler without lidocaine (HAF) for NLF correction. PATIENTS/METHODS A total of 62 subjects with visible NLFs were enrolled in this double-blind study at two university hospitals and injected with HAF-Lidocaine and HAF, randomly assigned to the each NLFs. Subjects assessed pain using the visual analog scale (VAS). Blinded independent dermatologists assessed the Wrinkle Severity Rating Scale (WSRS) and subjects assessed the Global Aesthetic Improvement Scale (GAIS) for the evaluation of effectiveness. All adverse events during the follow-up period were recorded. RESULTS Immediately after treatment, 95.2% of subjects who were treated with HAF-Lidocaine reported reduced pain when compared with those who were treated with HAF and the mean VAS score difference was 38.6 mm. At 15, 30, 45, and 60 minutes after treatment, respectively, 67.7%, 41.9%, 32.3%, and 21.0% of subjects experienced reduced pain. Based on the mean WSRS and GAIS scores and the incidence of local injection site reactions, the clinical effectiveness and safety profile of HAF-Lidocaine were comparable to those of HAF. CONCLUSION We conclude that HA filler containing pre-incorporated lidocaine could reduce pain in Korean patients for NLF correction, and the addition of lidocaine does not affect the effectiveness and safety of HA filler.
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Affiliation(s)
- Sun Young Choi
- Department of Dermatology, Seoul Paik Hospital, Inje University College of Medicine, Seoul, South Korea
| | - Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Ji Su Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yang Won Lee
- Department of Dermatology, Konkuk University School of Medicine, Seoul, South Korea
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Park SJ, Park JW, Park KY, Li K, Seo SJ, Kim BJ, Yoo KH. Systemic contact dermatitis induced by Rhus allergens in Korea: exercising caution in the consumption of this nutritious food. Clin Exp Dermatol 2020; 46:324-327. [PMID: 32974941 DOI: 10.1111/ced.14458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/11/2020] [Accepted: 09/16/2020] [Indexed: 11/29/2022]
Abstract
Systemic contact dermatitis (SCD) develops when a person who was previously sensitized to an allergen is exposed to the same allergen via the systemic route. In East Asia, the use of lacquer for polishing furniture is common and a part of the traditional culture. Contact exposure to tableware polished with Rhus lacquer may lead to sensitization. In Korea, SCD is commonly observed after systemic exposure to Rhus, a nutritious food item consumed because of the common belief of it improving the immune system. In this study, we reviewed the medical records of 21 Korean patients with SCD caused by Rhus ingestion. We found that the most significant epidemiological factor for SCD was the season of the year. Furthermore, 66.67% of the patients presented with leucocytosis and 23.81% showed increased liver enzyme levels. It is important to educate people on the risks associated with the systemic ingestion of Rhus.
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Affiliation(s)
- S J Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - J W Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Y Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - K H Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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41
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Choi SY, Ko EJ, Yoo KH, Han HS, Kim BJ. Effects of hyaluronic acid injected using the mesogun injector with stamp‐type microneedle on skin hydration. Dermatol Ther 2020; 33:e13963. [DOI: 10.1111/dth.13963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Sun Young Choi
- Department of Dermatology Seoul Paik Hospital, Inje University College of Medicine Seoul South Korea
| | - Eun Jung Ko
- Department of Dermatology National Police Hospital Seoul South Korea
| | - Kwang Ho Yoo
- Department of Dermatology Chung‐Ang University College of Medicine Seoul South Korea
| | - Hye Sung Han
- Department of Dermatology Chung‐Ang University College of Medicine Seoul South Korea
| | - Beom Joon Kim
- Department of Dermatology Chung‐Ang University College of Medicine Seoul South Korea
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Han HS, Koh IS, Yoo KH, Hong JK, Hong SA, Kim BJ. Delayed adverse events after using two different types of hyaluronic acid-based dermal fillers. Dermatol Ther 2020; 33:e14164. [PMID: 32894578 DOI: 10.1111/dth.14164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/21/2020] [Accepted: 08/05/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Hye Sung Han
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Ik-Soo Koh
- Kohiksoo Plastic Surgery Clinic, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Soon Auck Hong
- Department of Pathology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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43
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Kwon TR, Kim JH, Jang YN, Lee SE, Hong JY, Yoo KH, Kim BJ. Comparison of different energy response for lipolysis using a 1,060-nm laser: An animal study of three pigs. Skin Res Technol 2020; 27:5-14. [PMID: 32786153 DOI: 10.1111/srt.12899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/11/2020] [Accepted: 05/30/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Non-invasive body-sculpting procedures are becoming increasingly popular. The application of 1,060 nm of laser energy transcutaneously to hyperthermically induce the disruption of fat cells in the abdomen is a type of non-invasive procedure. AIMS The purpose of this study was to compare the treatment results from two parameters of the same system, each with different energy output levels, in an in vivo porcine model to determine the most effective application. METHODS Female pigs (n = 3) were used in this study. We examined the effects of the treatment using photography, ultrasonography, gross and microscopic pathology, and histological examination in order to determine the mechanism of action, efficacy, and safety of the procedure. Blood chemistry analysis was performed before each session to check lipid levels and to monitor for any adverse changes in markers that may indicate liver damage. Biopsies were taken and routinely processed with hematoxylin and eosin and Oil Red O stains to examine for tissue damage at baseline and after each treatment. Terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling (TUNEL) assays were performed to check for apoptotic-related DNA damage. RESULTS Ultrasonic imaging of the same area before and after the application of 1,060 nm of laser energy at outputs of 0.9 and 1.4 W/cm2 showed that the density of the fat layer changed immediately after irradiation due to the transient heat transfer in the fat layer. Preclinical evaluation was performed to obtain comparison data on the safety and efficacy of subcutaneous fat reduction after applying the different energy outputs of 0.9 and 1.4 W/cm2 . CONCLUSION Based on our findings, we suggest that long-term histologic changes through the use of these devices suggest a comparative effectiveness of the treatment energy.
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Affiliation(s)
- Tae-Rin Kwon
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jong Hwan Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - You Na Jang
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Sung-Eun Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Ji-Yeon Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.,Department of Medicine, Graduate School, Chung-Ang University, Seoul, Korea
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Yoo KH, Kwon TR, Kim JH, Kim BJ. Preclinical evaluation for removal of bulging lower eyelid fat using ultrasound-assisted lipolysis on a Yorkshire pig. Skin Res Technol 2020; 27:93-100. [PMID: 32750741 DOI: 10.1111/srt.12916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/20/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE The purpose of this study is to evaluate the efficacy and safety of treating lower eyelid fat bulging with ultrasound-assisted lipolysis (UAL) by performing a preclinical evaluation of the procedure on a Yorkshire pig. METHODS Two white Yorkshire pigs had lower eyelid fat bulging treated with UAL using a probe with a diameter of 1.0 mm or less. Fourteen days after treatment, we evaluated the changes in fat thickness from ultrasound, changes in skin contour (volume and height) from the Antera 3D™, and the disruption of fat cells and changes in collagen synthesis from histological evaluation. RESULTS Fourteen days after treatment, the fat layer was significantly reduced with no damage to the skin surface. The mean change in the subcutaneous fat layer thickness was decreased 1.51-0.75 mm in ultrasound analysis. The skin contour of the treated area also decreased with time from 202.5 to 163.5 mm in mean volume and 0.8111 to 0.646 mm in mean height. Masson's trichrome staining showed that the UAL treatment induced the regeneration and remodeling of collagen. CONCLUSION The results of this study demonstrate that UAL successfully reduced the bulging lower eyelid fat of a Yorkshire pig and also increased collagen contraction to tighten skin. UAL may be a beneficial and well-tolerated treatment option for lower eyelid fat bulging.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Tae Rin Kwon
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jong Hwan Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Korea
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45
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Kim DS, Song KU, Lee HK, Park JH, Kim BJ, Yoo KH, Shin JH. Synergistic effects of using novel home-use 660- and 850-nm light-emitting diode mask in combination with hyaluronic acid ampoule on photoaged Asian skin: A prospective, controlled study. J Cosmet Dermatol 2020; 19:2606-2615. [PMID: 32716115 DOI: 10.1111/jocd.13599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND Recently, light-emitting diode (LED) devices are among those mostly preferred for esthetic application because they improve the appearance of photoaged skin characterized by wrinkles, sagginess, pigmented lesions, and others. In addition, the use of hyaluronic acid (HA) for skin rejuvenation is already well proven. AIMS This study aims to evaluate the synergistic effects of using home-use LED mask device with HA ampoule. METHODS The total number of recruited subjects was 48:24 in Group A treated with both home-use LED mask device and HA ampoule and 24 in Group B treated with HA ampoule only, for 4 weeks. To assess the efficacy of the treatment, the following were used: Antera 3D CS, EOS 800D with Image-Pro Plus, DUB-USB, VisioFace Quick, and Visioscan VC98. RESULTS After treatment, the volume measurement (mm3 ) for prejowl sulci and nasolabial fold flattening as well as the area measurement (pixel) for lower chin firmness improvement was significantly reduced, and the number of pores (ea) for enlarged pores as well as the desquamation index (%) for the amount of corneocytes significantly decreased in both Group A and Group B. Moreover, the percentage of skin density significantly improved. Furthermore, Group A showed a significantly faster and higher rate of improvement than Group B. CONCLUSION The use of 660- and 850-nm home-use LED mask device can generate synergistic effects on home-use topical applications like HA on photoaged face, and such device can be safely and efficiently used daily in personal environments.
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Affiliation(s)
- Dae Sung Kim
- Research Development Center, CELLRETURN, Incheon, South Korea
| | - Ki Uk Song
- Clinical Research Consultant, Brighlans, Inc., Manila, Philippines
| | | | | | - Beom Joon Kim
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University School of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University School of Medicine, Seoul, South Korea
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46
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Yoo KH, Kwon TR, Kim YU, Kim EH, Kim BJ. The Effects of Fabric Containing Chamaecyparis obtusa Essential Oil on Atopic Dermatitis-Like Lesions: A Functional Clothing Possibility. Skin Pharmacol Physiol 2020; 33:82-92. [PMID: 32535609 DOI: 10.1159/000507941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/11/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Essential oil derived from Chamaecyparis obtusa (EOCO) has been used as an alternative treatment for allergy-related diseases due to its immune-modulating characteristics. Clothing has the longest and most intense contact with human skin, and functional fabrics with intrinsic properties have been increasingly implemented in medical applications. Specially designed fabrics may support atopic dermatitis (AD) treatment. In this study, the effects of fabric containing EOCO on AD were investigated using an NC/Nga mouse model. METHODS The fabric was applied for 6 h per day for 14 days. The therapeutic effects were evaluated according to measurements of skin lesion severity (modified SCORAD score), transepidermal water loss (TEWL), serum IgE and inflammatory cytokine levels, lesion thickness measured after hematoxylin and eosin staining, and immunohistochemical and Western blot analysis for skin epidermal differentiation protein. RESULTS The EOCO group exhibited significantly reduced modified SCORAD score, TEWL, and serum IgE levels. Among the inflammatory cytokines analyzed, only the mean values of regulated on activation, normal T cell expressed and secreted were observed to be decreased compared with other control groups. The histological analysis of the skin also revealed that the EOCO group expressed reduced epidermal hyperplasia and recovered filaggrin, involucrin, and loricrin expression. CONCLUSIONS It was confirmed that fabric containing EOCO has anti-atopic and anti-inflammatory properties. The study data show that fabric containing EOCO can be implemented as an alternative functional clothing for people suffering from AD.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Tae Rin Kwon
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Young Un Kim
- Korea institute for knit industry, Iksan, Republic of Korea
| | - Eui Hwa Kim
- Department of Textile Materials Engineering, Shinhan University, Dongducheon, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea,
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47
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Yoo KH, Bang DS, Han HS, Li K, Kim BJ. Intralesional triamcinolone injections for the treatment of nail dystrophy: A case series. Dermatol Ther 2020; 33:e13427. [PMID: 32301144 DOI: 10.1111/dth.13427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/06/2020] [Accepted: 04/14/2020] [Indexed: 11/28/2022]
Abstract
Nail dystrophy can be temporary or permanent and affects quality of life for many patients. It can be secondary to an inflammatory condition; however, many cases are idiopathic. Despite many efforts, there is no promising treatment. Local steroid injection is one of the standard therapies offered for nail dystrophy, but there have been few formal open trials or case reports of its efficacy. This study investigated the impact of intralesional triamcinolone injections on the management and safety of nail dystrophy. Overall, 12 patients with 55 nails affected by nail dystrophy were enrolled. All lesions were injected with triamcinolone acetonide (2.5 mg/mL, 0.1 cc) through the proximal nail fold with a 30 g needle. Injections were administered every 4 weeks. Efficacy was retrospectively evaluated using physician's global assessment of clinical photographs graded on a 5-point scale as 0, no improvement; 1, slight improvement; 2, moderate improvement; 3, marked improvement; and 4, almost resolved. All adverse events that occurred during treatment were recorded. All patients presented with slight improvement of nail dystrophy after 1 to 3 months. The treatment durations varied from 6 to 12 months (mean, 8.58 months). The average time to observed therapeutic effect was 1.91 months after first treatment. The mean outcome assessment score was 2.8 points, with two patients each showing slight and moderate improvement and five showing marked improvement; in three, the dystrophy was almost resolved. Side effects of this regimen were minimal. Intralesional triamcinolone injections are an effective and safe method for the treatment of nail dystrophy.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Dong Sik Bang
- Department of Dermatology, College of Medicine, Catholic Kwandong University, International St. Mary's Hospital, Incheon, Republic of Korea
| | - Hye Sung Han
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Kapsok Li
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
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Yoo KH, Kwon TR, Oh CT, Ko KC, No YH, Oh WJ, Kim BJ. Improvement of a slimming cream's efficacy using a novel fabric as a transdermal drug delivery system: An in vivo and in vitro study. Exp Ther Med 2020; 19:3282-3288. [PMID: 32266024 PMCID: PMC7132236 DOI: 10.3892/etm.2020.8582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 09/19/2019] [Indexed: 12/04/2022] Open
Abstract
Penetration of any compound into the body from the outside is prevented primarily by the corneal layer of the epidermis. The only way to circumvent the properties of the corneal layer is to disrupt it. Currently, transdermal systems can currently only deliver drugs that are of low molecular weight. The purpose of the present study was to assess the improvement of the slimming cream's efficacy using a novel fabric, with the aim of developing an improved method for transdermal drug delivery. The current study was conducted on four groups of guinea pigs. The control group was untreated, whereas the test groups were treated with either slimming cream and no fabric, slimming cream with 100% cotton fabric or slimming cream with the novel fabric. Ultrasound and microscopic histological analysis were used to assess animals. The results demonstrated that compared with the other groups, the novel fabric group demonstrated the greatest reductions in fat layer thickness, adipocyte size and number and proliferator-activated receptor-γ levels in adipose tissue. Furthermore, the novel fabric also enhanced the transdermal delivery of rhodamine B base and caffeine penetration compared with the control fabric (3.18-fold). In conclusion, the results of the present study demonstrated that the novel fabric can potentially be used to enhance transdermal drug delivery.
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Affiliation(s)
- Kwang Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea.,Department of Dermatology, College of Medicine, Catholic Kwandong University, International St. Mary's Hospital, Incheon 22711, Republic of Korea
| | - Tae-Rin Kwon
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea
| | - Chang Taek Oh
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea.,Research and Development Center, Green Cross Well-Being Corporation, Seongnam 13595, Republic of Korea
| | - Kyeung Chan Ko
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea
| | - Yong Hwan No
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea
| | - Won Jong Oh
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University Hospital, Seoul 156-755, Republic of Korea
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Cho SB, Ahn KJ, Oh D, Kim H, Yoo KH. Sequential delivery of long-pulsed 755-nm alexandrite laser and long-pulsed 1,064-nm neodymium:yttrium-aluminum-garnet laser treatment for pigmented disorders. Skin Res Technol 2019; 25:683-692. [PMID: 31056804 DOI: 10.1111/srt.12704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 02/17/2019] [Accepted: 04/14/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Long-pulsed (LP) lasers at pulse durations of 1-300 ms have been used to destroy nests of nevi cells by selectively targeting pigment chromophores. OBJECTIVE To evaluate dual-wavelength LP laser-induced tissue reactions. METHODS The patterns of LP 755-nm alexandrite (Alex) and/or 1064-nm neodymium (Nd):yttrium-aluminum-garnet (YAG) laser-induced tissue reactions were macroscopically evaluated using a tattoo-embedded phantom. Additionally, a pilot in vivo human study was performed for common acquired melanocytic nevus, of which dermoscopic images and high-speed cinematographs were obtained. RESULTS Combinations of Nd:YAG and Alex laser treatments at interpulse intervals of 10 or 20 ms generated round to oval zones of photothermal and photoacoustic injury in two distinctive areas containing disintegrated tattoo particles. Treatment at interpulse intervals of 10 or 20 ms between Alex and Nd:YAG pulses elicited lesser degrees of thermal damage to surrounding tissues, compared to treatment at 100 or 200 ms. Immediately after combined LP laser treatment of human nevus lesions in vivo, Nd:YAG-Alex treatment at a 20-ms interpulse interval exhibited more remarkable crusting and erosive appearances than Alex-Nd:YAG treatment. CONCLUSION For treating pigmented disorders, sequential delivery of LP Nd:YAG and Alex pulses at short interpulse intervals of 10-20 ms can effectively destroy nests of pigment chromophores.
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Affiliation(s)
- Sung Bin Cho
- Department of Dermatology and Cutaneous Biology Research Center, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea.,Yonsei Seran Dermatology and Laser Clinic, Seoul, Korea
| | - Keun Jae Ahn
- Department of Science Education, Jeju National University, Jeju, Korea
| | - Doojin Oh
- Cheongdam Suan Dermatology Clinic, Seoul, Korea
| | - Heesu Kim
- Department of Dermatology and Cutaneous Biology Research Center, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
| | - Kwang Ho Yoo
- Department of Dermatology and Cutaneous Biology Research Center, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
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Abstract
AIM This study study aimed to investigate the effects of explicit and tacit knowledge sharing on clinical decision-making abilities and the mediating role of trust among registered nurses at Korean hospitals. BACKGROUND Decision-making abilities comprise a key area of nursing practice and link nurses' perceptions with behaviours. INTRODUCTION Tacit knowledge is embedded within an individual and cannot be expressed or transmitted to other people in a specific form. Over time, new nurses gradually gain experience and tacit knowledge and become experts. Trust, an organizational characteristic, may serve as a potential mediator in the association between knowledge sharing and decision-making abilities among nurses. However, few studies have investigated the mediatory role of trust in this association. METHOD The data were collected from 210 nurses selected via random sampling. The research instrument in the model included Knowledge-Sharing Behavior, Trust, and Clinical Decision-Making in Nursing Scale. Structural equation modelling was used to analyse the collected data. FINDINGS The study findings showed that explicit knowledge sharing directly affects decision-making abilities, whereas tacit knowledge sharing is only associated with decision-making abilities when trust plays a mediating role. DISCUSSION A higher level of organizational trust can improve clinical decision-making abilities via tacit knowledge sharing. CONCLUSION This study demonstrated that unlike explicit knowledge, which is shared more easily, tacit knowledge sharing does not directly lead to clinical decision-making abilities. A higher level of organizational trust leads to a stronger beneficial effect of tacit knowledge sharing on clinical decision-making abilities. IMPLICATIONS FOR NURSING AND HEALTH POLICY These findings concerning the mediatory role of trust on the association between knowledge sharing and clinical decision-making abilities provide new knowledge that will allow nurses, managers, and researchers to support the clinical decision-making abilities of nurses.
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Affiliation(s)
- K H Yoo
- School of Nursing of Xi'an Medical University, Xi'an, China
| | - Y A Zhang
- School of Nursing of Xi'an Medical University, Xi'an, China
| | - E K Yun
- College of Nursing Science, Kyung Hee University, Seoul, Korea
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