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Hong JY, Shin SH, Koh YG, Seok J, Park KY. Efficacy and safety of a novel 785 nm picosecond neodymium-doped yttrium aluminum garnet laser for the treatment of facial benign pigmented lesions in Asian skin: a pilot study. J DERMATOL TREAT 2024; 35:2293640. [PMID: 38108131 DOI: 10.1080/09546634.2023.2293640] [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: 03/02/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND AND OBJECTIVES Benign pigmented lesions and a general uneven tone in people with skin of color are growing issues that have been presented to dermatologists. To the best of our knowledge, this is the first controlled study to examine the efficacy and safety of using the newly introduced 785 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) picosecond laser to treat facial benign pigmented lesions in Asian patients with diffractive lens array. MATERIALS AND METHODS A 785 nm Nd:YAG picosecond laser was used to treat 15 healthy female volunteers older than 18 years who had Fitzpatrick skin types II-IV and facial benign pigmented lesions. Each volunteer received five weekly treatments in dual modes. The clinical improvement was assessed by independent investigators and by objectively measuring the melanin index. RESULTS After the treatment, the melanin and erythema indices decreased, and the pigmented lesions showed clinical improvements. No serious adverse effects were observed during the study period. CONCLUSIONS A 785 nm Nd:YAG picosecond laser may be safe and effective in treating facial benign pigmented lesions in Asian skin.
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Affiliation(s)
- Ji Yeon Hong
- Department of Dermatology, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joon Seok
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
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Choi SY, Koh YG, Roh YJ, Park KY. The efficacy of enoxolone in reducing erythema and pain after laser treatment: A randomized split-face pilot study. J Cosmet Dermatol 2024. [PMID: 38622995 DOI: 10.1111/jocd.16329] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/24/2024] [Accepted: 04/08/2024] [Indexed: 04/17/2024]
Abstract
BACKGROUND Enoxolone, derived from licorice, possesses potent anti-inflammatory, and antioxidant properties. However, its effectiveness in alleviating post-laser reactions has not been extensively studied. AIMS This randomized split-face pilot study aimed to evaluate the effects of enoxolone on skin following laser treatment. PATIENTS/METHODS Ten healthy subjects underwent non-ablative 1550 nm Er:Glass fractional laser treatment and then randomly applied a moisturizer without enoxolone on one side of the face and a dermo-cosmetic formular containing 2% enoxolone mixed with the same moisturizer on the other side. The erythema index (EI), clinician's erythema assessment (CEA), and pain scores were recorded at 30 min, 60 min, and 24 h posttreatment. RESULTS The group treated with enoxolone showed significantly lower EI and CEA compared to the control group at 24 h posttreatment. Additionally, pain scores were notably reduced in the enoxolone-treated group 30 min after treatment. CONCLUSIONS This study suggests that dermo-cosmetic formular containing 2% enoxolone is effective in reducing erythema and pain following laser treatment.
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Affiliation(s)
- Sun Young Choi
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yoon Jin Roh
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South 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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Park SJ, Shin SH, Koh YG, Kim GH, Rho NK, Park KY. Cold anesthesia for pain reduction during intralesional steroid injection for nodulocystic acne. J Cosmet Dermatol 2023; 22:3375-3378. [PMID: 37218601 DOI: 10.1111/jocd.15829] [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: 01/24/2023] [Revised: 05/02/2023] [Accepted: 05/11/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND In any dermatologic procedure, patient acceptance of treatment is heavily influenced by intraprocedural pain. Intralesional triamcinolone injections are very important in keloid scar and nodulocystic acne treatment. However, the main problem of needle-stick procedures is pain. Cryoanesthesia is ideally intended to cool only the epidermis during treatment and has advantage which did not require application time. AIMS The aim of this study was to investigate the pain-reducing effect and safety of CryoVIVE® (newly introduced cryoanesthesia device) during triamcinolone injections for nodulocystic acne in actual clinical settings. PATIENTS/METHODS In this two-staged, non-randomized clinical trial, a total of 64 subjects underwent intralesional triamcinolone injections for their acne lesions with cold anesthesia using CryoVIVE®. The pain intensity was assessed with Visual Analogue Scale (VAS) scores. Safety profile was also evaluated. RESULTS The mean pain VAS scores on the lesion with and without cold anesthesia were 3.667 and 5.933, respectively (p = 0.0001). No side effects, discoloration, and scarring were observed. CONCLUSION In conclusion, the anesthetic use of CryoVIVE® with intralesional corticosteroid injections is a practical and well-tolerated modality.
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Affiliation(s)
- Su Jung Park
- Department of Dermatology, Soonchunhyang University College of Medicine, Cheonan, South Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Gun-Ho Kim
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - Nark Kyoung Rho
- Leaders Aesthetic Laser & Cosmetic Surgery Center, Seoul, South Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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Han HS, Koh YG, Hong JK, Roh YJ, Seo SJ, Park KY. Adipose-derived stem cell exosomes for treatment of dupilumab-related facial redness in patients with atopic dermatitis. J DERMATOL TREAT 2023; 34:2220444. [PMID: 37272353 DOI: 10.1080/09546634.2023.2220444] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Dupilumab facial redness (DFR) is a side effect of dupilumab treatment that has only been recently reported. We previously reported on two patients with DFR who were successfully treated with a topical formulation containing human adipose tissue-derived mesenchymal stem cell-derived exosomes (ASCEs). OBJECTIVES The study aimed to evaluate the efficacy and safety of ASCEs in DFR. PARTICIPANTS AND METHODS We performed 12-week prospective study at single center. Twenty adult atopic dermatitis patients diagnosed with DFR were enrolled. They were treated with a topical application of the exosome formulation every week for five consecutive weeks. RESULTS After exosome treatment, both the average investigator global assessment score and clinical erythema assessment scale scores decreased. 19 patients (95%) were satisfied with the treatment. Compared to baseline, erythema index at week 4 were decreased by 31, 27, 13, and 25 units on the forehead, chin, right and left cheek respectively. The analysis of stratum corneum samples revealed the expression of IL-1α and human thymic stromal lymphopoietin was suppressed after exosome treatment, whereas filaggrin and vascular endothelial growth factor expression increased. CONCLUSIONS This study suggests topical formulation containing ASCEs can alleviate DFR by downregulating local inflammation and restoring skin barrier function.
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Affiliation(s)
- Hye Sung Han
- Department of Dermatology, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-si, Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Yoon Jin Roh
- Department of Dermatology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Chung-Ang University Hospital, Seoul, Korea
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Lee WG, Koh YG, Shin SH, Park KY, Lee HW. Case series of acanthosis nigricans treated with topical trifarotene cream. J Cosmet Dermatol 2023; 22:2862-2864. [PMID: 37060202 DOI: 10.1111/jocd.15777] [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: 01/19/2023] [Revised: 03/29/2023] [Accepted: 04/05/2023] [Indexed: 04/16/2023]
Affiliation(s)
- Woo Geon Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, 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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Koh YG, Shin SH, Kim KR, Yeoum SH, Choi WW, Park KY. A Double-Blinded, Randomized, Dose-Comparison Pilot Study to Comparatively Evaluate Efficacy and Safety of Two Doses of Botulinum Toxin Type A Injection for Deltoid Muscle Hypertrophy. Ann Dermatol 2023; 35:355-359. [PMID: 37830417 PMCID: PMC10579568 DOI: 10.5021/ad.22.155] [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: 07/28/2022] [Revised: 04/25/2023] [Accepted: 05/10/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Botulinum toxin type A (BTX-A) injection is being widely used off-label for muscular hypertrophy, including deltoid muscle hypertrophy. However, very few studies have evaluated the optimal dosage and its clinical response. OBJECTIVE This study aimed to assess the efficacy and safety of different doses of Prabotulinum toxin A (PBoNT) for treating deltoid muscle hypertrophy. METHODS Twelve particiapants with bilateral deltoid muscle hypertrophy were enrolled and randomly received either 16 U or 32 U of PBoNT. In each participant, the same dose was administered to both deltoid muscles. Both participants and evaluators were blinded. Deltoid muscle thickness and upper arm circumference were measured on day 0, and weeks 2, 4, and 12 after the PBoNT injection. RESULTS Upper arm circumference significantly decreased in both groups; however, deltoid muscle thickness was reduced in the 16 U group only. No major complications were reported in both groups. However, a few minor complications were reported in the 16 U injection group. CONCLUSION Both 16 U and 32 U of PBoNT intramuscular injections are safe and effective in treating deltoid hypertrophy.
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Affiliation(s)
- Young Gue Koh
- 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
| | - Ka Ram Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | | | | | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
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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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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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Shin SH, Koh YG, Lee WG, Seok J, Park KY. The use of epidermal growth factor in dermatological practice. Int Wound J 2022. [PMID: 36584669 DOI: 10.1111/iwj.14075] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 11/15/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/31/2022] Open
Abstract
Epidermal growth factor (EGF) is a growth factor that plays a pivotal role in wound healing and maintaining tissue homeostasis by regulating cell survival, proliferation, migration, and differentiation. Exogenous administration of bioidentical human recombinant epidermal growth factor (rhEGF) has been known to promote skin wound healing, although rhEGF is increasingly being used in drug delivery systems and nanotechnology. However, despite considerable attention being focused on the potential clinical applications of rhEGF in several dermatological conditions beyond wound healing, the number of studies still remains relatively low. Herein, we conducted a literature search of PubMed/Medline and Google Scholar databases to retrieve published literature related to rhEGF and summarised the effects of rhEGF in the treatment of various wound types, radiotherapy or chemotherapy-related skin reactions, atopic dermatitis, skin aging, and post-inflammatory hyperpigmentation.
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Affiliation(s)
- Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Woo Geon Lee
- 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
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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Hong JK, Koh YG, Li K, Seo SJ, Seo SB, Park KY. Treatment of facial pigmented disorders with a 785-nm picosecond Ti:sapphire laser in Asians: A report of three cases. Dermatol Ther 2022; 35:e15919. [PMID: 36214374 DOI: 10.1111/dth.15919] [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: 08/08/2022] [Revised: 09/19/2022] [Accepted: 10/06/2022] [Indexed: 11/03/2022]
Abstract
Since the advent of the theory of selective photothermolysis, the importance of targeting the chromophore and minimizing the surrounding damage has been extensively discussed. Picosecond-domain laser (ps-laser) treatment with a wide range of wavelengths is an emerging option for various pigmented lesions; however, no definitive treatment choice has been confirmed. The authors aimed to investigate the efficacy and safety of a ps-laser with a 785-nm wavelength for the treatment of facial pigmented lesions in Asians. Three Korean patients with facial pigmented lesions were recruited for the study. A 785-nm ps-laser with a fractionated and an unfractionated handpiece was utilized to administer the treatment. The clinical outcome was evaluated by a clinician by comparing pre- and post-treatment photographs. All patients exhibited a significant improvement in pigmented lesions including freckles, lentigines, and melasma, after three to four sessions of treatment. No adverse events, including post-inflammatory hyperpigmentation or hypopigmentation were observed. In conclusion, this novel 785-nm Ti:sapphire ps-laser may be an effective and safe modality for treating pigmented lesions in skin of color.
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Affiliation(s)
- Jun Ki Hong
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Suk Bae Seo
- Department of Dermatology, SAS Dermatologic Clinic, Seoul, South Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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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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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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Ahn GR, Park HJ, Koh YG, Shin SH, Kim YJ, Song MG, Lee JO, Hong HK, Lee KB, Kim BJ. Low-intensity cold atmospheric plasma reduces wrinkles on photoaged skin through hormetic induction of extracellular matrix protein expression in dermal fibroblasts. Lasers Surg Med 2022; 54:978-993. [PMID: 35662062 DOI: 10.1002/lsm.23559] [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: 10/24/2021] [Revised: 04/26/2022] [Accepted: 05/08/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Recent evidence indicates that cold atmospheric plasma (CAP) can upregulate the production of extracellular matrix (ECM) proteins in dermal fibroblasts and enhance transdermal drug delivery when applied at a low intensity. OBJECTIVES The aim of this study was to evaluate the effect of low-intensity CAP (LICAP) on photoaging-induced wrinkles in an animal model and the expression profiles of ECM proteins in human dermal fibroblasts. METHODS Each group was subjected to photoaging induction and allocated to therapy (LICAP, topical polylactic acid (PLA), or both). The wrinkles were evaluated via visual inspection, quantitative analysis, and histology. The expression of collagen I/III and fibronectin was assessed using reverse transcription-quantitative polymerase chain reaction, western blot analysis, and immunofluorescence. The amount of aqueous reactive species produced by LICAP using helium and argon gas was also measured. RESULTS Wrinkles significantly decreased in all treatment groups compared to those in the untreated control. The differences remained significant for at least 4 weeks. Dermal collagen density increased following LICAP and PLA application. LICAP demonstrated a hormetic effect on ECM protein expression in human dermal fibroblasts. The production of reactive species increased, showing a biphasic pattern, with an initial linear phase and a slow saturation phase. The initial linearity was sustained for a longer time in the helium plasma (~60 s) than in the argon plasma (~15 s). CONCLUSION LICAP appears to be a novel treatment option for wrinkles on the photodamaged skin. This treatment effect seems to be related to its hormetic effect on dermal ECM production.
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Affiliation(s)
- Ga Ram Ahn
- Department of Dermatology, Chung-Ang University College of Medicine, 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 College of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yu Jin Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Min Gyo Song
- School of Biomedical Engineering, Korea University, Seoul, Korea
| | - Jung Ok Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hyuck Ki Hong
- Human IT Convergence System R&D Division, Korea Electronics Technology Institute, Seongnam-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 Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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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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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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Park JW, Han HS, Koh YG, Seo SB, Kim GH, Park KY. Split-face comparative trial of 785-nm picosecond neodymium:yttrium-aluminum-garnet laser and precision cryotherapy combination treatment for facial benign pigmented lesions. Dermatol Ther 2021; 35:e15240. [PMID: 34854186 DOI: 10.1111/dth.15240] [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: 10/12/2021] [Revised: 11/09/2021] [Accepted: 11/27/2021] [Indexed: 11/28/2022]
Abstract
Cryotherapy (or cryosurgery) has been performed to treat various skin lesions in the field of dermatology; however, to the best of our knowledge, no study has investigated its efficacy and safety for benign pigmented lesions. Therefore, we conducted a split-face study to evaluate the efficacy and safety of cryotherapy in the treatment of benign pigmented lesions. A total of five subjects were included. Picosecond laser therapy was performed to treat the whole face and cryotherapy for half the face. Four weeks after completing the treatment sessions, patients showed more clinical improvement on the laser and cryotherapy combination treatment side than on the laser-only side, with no adverse events. Our study demonstrated that cryotherapy is a potential adjuvant therapeutic modality for benign pigmented lesions.
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Affiliation(s)
- Jae Wan Park
- 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
| | - Young Gue Koh
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Suk Bae Seo
- Department of Dermatology, SAS Dermatologic Clinic, Seoul, South Korea
| | - Gun-Ho Kim
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
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Kim YS, Kwon OR, Heo DB, Tak DH, Koh YG, Lee SW. Response to Letter to the Editor: the use of the term "mesenchymal stem cells" in our article is appropriate based on our laboratory study and the review of the literatures. Osteoarthritis Cartilage 2016; 24:1304-5. [PMID: 26946246 DOI: 10.1016/j.joca.2016.02.007] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 02/24/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Y S Kim
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea
| | - O R Kwon
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea
| | - D B Heo
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea
| | - D H Tak
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea
| | - Y G Koh
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - S W Lee
- Department of Radiology, Yonsei Sarang Hospital, Seoul, Republic of Korea
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Kim YS, Choi YJ, Lee SW, Kwon OR, Suh DS, Heo DB, Koh YG. Assessment of clinical and MRI outcomes after mesenchymal stem cell implantation in patients with knee osteoarthritis: a prospective study. Osteoarthritis Cartilage 2016; 24:237-45. [PMID: 26318655 DOI: 10.1016/j.joca.2015.08.009] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 07/14/2015] [Accepted: 08/18/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Cartilage regenerative procedures using the cell-based tissue engineering approach involving mesenchymal stem cells (MSCs) have been receiving increased interest because of their potential for altering the progression of osteoarthritis (OA) by repairing cartilage lesions. The aim of this study was to investigate the clinical and magnetic resonance imaging (MRI) outcomes of MSC implantation in OA knees and to determine the association between clinical and MRI outcomes. DESIGN Twenty patients (24 knees) who underwent arthroscopic MSC implantation for cartilage lesions in their OA knees were evaluated at 2 years after surgery. Clinical outcomes were evaluated according to the International Knee Documentation Committee (IKDC) score and the Tegner activity scale, and cartilage repair was assessed according to the MRI Osteoarthritis Knee Score (MOAKS) and Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score. RESULTS The clinical outcomes significantly improved (P < 0.001 for both). The cartilage lesion grades (as described in MOAKS [grades for size of cartilage-loss area and percentage of full-thickness cartilage loss]) at follow-up MRI were significantly better than the preoperative values (P < 0.001 for both). The clinical outcomes at final follow-up were significantly correlated with the MOAKS and MOCART score at follow-up MRI (P < 0.05 for all). CONCLUSIONS Considering the encouraging clinical and MRI outcomes obtained and the significant correlations noted between the clinical and MRI outcomes, MSC implantation seems to be useful for repairing cartilage lesions in OA knees. However, a larger sample size and long-term studies are needed to confirm our findings.
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Affiliation(s)
- Y S Kim
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - Y J Choi
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - S W Lee
- Department of Radiology, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - O R Kwon
- Joint Reconstruction Center, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - D S Suh
- Joint Reconstruction Center, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - D B Heo
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
| | - Y G Koh
- Center for Stem Cell & Arthritis Research, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea; Joint Reconstruction Center, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, Seoul, Republic of Korea.
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Yeo JE, Nam BM, Yang W, Jo YH, Lee S, Nemeno JG, Kiml BY, Koh YG, Lee JI. Fragmin/protamine microparticle carriers as a drug repositioning strategy for cell transplantation. Transplant Proc 2013; 45:3122-6. [PMID: 24157048 DOI: 10.1016/j.transproceed.2013.08.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND The importance of drug repositioning has been gaining attention in the last few years, allowing existing pharmaceutical products to be reevaluated for potential alternative therapeutic applications. The purpose of this study was to evaluate the effects of fragmin/protamine microparticles (F/P MPs) on cell aggregates under the concept of drug repositioning. METHODS Mesenchymal stem cells (MSCs) and embryonic rat heart-derived cardiac H9C2 cells were mixed with D-PBS, basal medium, fragmin, protamine, and F/P MPs to manufacture aggregates intended for cell transplantation. To evaluate their adhesive properties as cell carriers, we injected combinations of MSC aggregates into cartilage tissue, observing their leakage from the implantation site. RESULTS Our data demonstrated that MSCs and H9C2 cells mixed with F/P MPs rapidly produced large, viscous cellular aggregates. F/P MPs were bound to the surface of MSCs and H9C2 cells; thus, F/P MPs induced the formation of F/P MP-cell aggregates. Cell aggregates were prevented from leaking from the transplanted site. CONCLUSION Aggregation induced by F/P MPs may improve the efficiency of cell therapy, a novel method for transplantation.
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Affiliation(s)
- J E Yeo
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul, Republic of Korea; The Center for Stem Cell & Arthritis Research, Department of Orthopedic Surgery, Yonsei Sarang Hospital, Bangbae-dong, Seocho-gu, Seoul 137-060, Republic of Korea
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Kim YH, Oh JH, Koh YG. Salvage of neglected unstable intertrochanteric fracture with cementless porous-coated hemiarthroplasty. Clin Orthop Relat Res 1992:182-7. [PMID: 1555340] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A cementless porous-coated femoral prosthesis with a long stem was implanted in seven patients who had untreated comminuted unstable intertrochanteric fractures of the femur associated with a posterior dislocation of the femoral head. The average age of the patients was 35 years (range, 25-52 years). The length of follow-up observation averaged 45 months (range, 23-60 months). The hip rating at the final follow-up examination ranged from 82 to 100 points (average, 96 points). The follow-up roentgenographs of these patients revealed complete consolidation of the fracture site and no evidence of subsidence or loosening of the prosthesis. There was no indication of detrimental bone remodeling phenomenon in this series. Hemiarthroplasty with a cementless, porous-coated, long-stem prosthesis can be effective treatment for this complex fracture dislocation.
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Affiliation(s)
- Y H Kim
- Yonsei University College of Medicine, Seoul, Korea
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