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Kim YC, Yang JY, Yoon JS, Jo SJ, Ahn HH, Song KH, Lee DY, Chung KY, Won YH, Kim IH. A multicentre, open, investigator-initiated phase IV clinical trial to evaluate the efficacy and safety of ingenol mebutate gel, 0·015% on the face and scalp, and 0·05% on the trunk and extremities, in Korean patients with actinic keratosis (PERFECT). Br J Dermatol 2018; 179:836-843. [PMID: 29355904 DOI: 10.1111/bjd.16368] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Ingenol mebutate gel is a novel, field-directed topical treatment for actinic keratosis (AK). Most pivotal studies have targeted Western populations. No clinical study has been conducted to investigate its efficacy and safety in Asian populations. OBJECTIVES To evaluate the efficacy and safety of ingenol mebutate gel for treating AK of face/scalp and trunk/extremities in a large Asian (Korean) population. PATIENTS AND METHODS In this multicentre, open-label, interventional, parallel-group, prospective phase IV study (PERFECT, trial registration no.: NCT02716714), the eligible patients were allocated into either the face/scalp or the trunk/extremities group, according to their selected treatment area location. After application of ingenol mebutate gel, the participants were followed up for 6 months. The primary efficacy endpoint was complete clearance (CC) of AK lesions in the selected treatment area at day 57. Quality of life was evaluated using Skindex-29. Safety endpoints included local skin responses, scar, pigmentation, pain and adverse events. RESULTS In total, 78·1% [95% confidence interval (CI) 66·86-86·92%] of subjects had CC at day 57, with 76·6% (95% CI 64·31-86·25%) in the face/scalp group and 88·9% (95% CI 51·75-99·72%) in the trunk/extremities group. Among them, CC was sustained in 88·9% (48 of 54, 95% CI 77·37-95·81%) at month 6. The local skin responses significantly increased 1 day after the treatment compared with baseline, and decreased afterwards. Among the total subjects, 7·8% (6 of 77) had hyperpigmentation on the application area. Scars were not reported. CONCLUSIONS Ingenol mebutate is effective for the treatment of AK in Asians, with tolerable safety profiles.
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Affiliation(s)
- Y C Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J Y Yang
- Department of Dermatology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J S Yoon
- Department of Dermatology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - S J Jo
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H H Ahn
- Department of Dermatology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - K-H Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - D-Y Lee
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K-Y Chung
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y-H Won
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - I-H Kim
- Department of Dermatology, Korea University Ansan Hospital, Korea University College of Medicine, 123 Jeokgeum-ro, Danwon-gu, Ansan, 15355, Republic of Korea
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Youn SW, Lee JH, Yu DY, Kim Y, Kim BS, Seo SJ, Choe YB, Yun SK, Park J, Kim NI, Choi CW, Youn JI, Lee SJ, Lee MG, Kim KJ, Park CJ, Ro YS, Song HJ, Shin BS, Ahn SK, Lee JY, Won YH, Jang MS, Kim KH, Kim MH, Kim TY, Choi JH. The relationship between clinical characteristics including presence of exposed lesions and health-related quality of life (HRQoL) in patients with psoriasis: analysis from the nationwide epidemiologic study for psoriasis in Korea (EPI-PSODE study). J Eur Acad Dermatol Venereol 2018; 32:1499-1506. [PMID: 29430733 DOI: 10.1111/jdv.14865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/25/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND Psychological aspect and quality of life should be considered in treating patients with psoriasis. OBJECTIVE We sought to ascertain which clinical characteristics including presence of exposed lesions are associated with impairment of health-related quality of life (HRQoL) in patients with psoriasis. METHODS The EPI-PSODE study was a nationwide, multicenter, cross-sectional study conducted in Korea that included 1260 adult patients with psoriasis. In addition to clinical characteristics including presence of exposed lesions, data were collected using the Psoriatic Arthritis (PsA) Screening and Evaluation (PASE), Dermatology Life Quality Index (DLQI), MOS 36-Item Short-Form Health Survey (SF-36), Work Productivity and Activity Impairment Questionnaire Psoriasis (WPAI: PSO) and Medication Satisfaction Questionnaire (MSQ). RESULTS Patients with a DLQI score > 5 (n = 990) were younger, had an earlier onset of psoriasis, scored higher on the Psoriasis Area and Severity Index (PASI), had higher body surface area (BSA) and had higher PASE scores than patients with DLQI ≤ 5 (n = 266). The group of patients with exposed lesions (n = 871) were younger and male predominance, earlier onset of psoriasis, longer disease duration, higher PASI/BSA score and a higher proportion with drinking and smoking history each than the group of patients without exposed lesions (n = 389). Presence of exposed lesions negatively influenced DLQI, 36-Item Short-Form Health Survey (SF-36) (mental component), presenteeism, total work productivity impairment and total activity impairment in the WPAI: PSO. In multiple regression model, PASI score was the only variable which was significantly associated with all HRQoL measures. Presence of exposed lesions was a significant factor affecting DLQI and SF-36 (mental). CONCLUSION The presence of exposed lesions has a negative impact on quality of life, mental health and work productivity. Therefore, effective treatments are particularly needed for psoriasis patients with exposed lesions.
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Affiliation(s)
- S W Youn
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J-H Lee
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - D Y Yu
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - Y Kim
- Medical Affairs, Janssen Korea, Seoul, Korea
| | - B S Kim
- Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University Hospital, Seoul, Korea
| | - Y B Choe
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - S-K Yun
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
| | - J Park
- Department of Dermatology, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - N I Kim
- Department of Dermatology, KyungHee University Medical center, Seoul, Korea
| | - C W Choi
- Department of Dermatology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J I Youn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - S-J Lee
- Department of Dermatology, Kyungpook National University Hospital, Daegu, Korea
| | - M-G Lee
- Department of Dermatology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - K J Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - C J Park
- Department of Dermatology, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Y S Ro
- Department of Dermatology, Hanyang University Medical Center, Seoul, Korea
| | - H J Song
- Department of Dermatology, Korea University Guro Hospital, Seoul, Korea
| | - B S Shin
- Department of Dermatology, Chosun University Hospital, Gwangju, Korea
| | - S K Ahn
- Department of Dermatology, Wonju Severance Christian Hospital, Wonju, Korea
| | - J Y Lee
- Department of Dermatology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Y H Won
- Department of Dermatology, Chonnam National University Hospital, Gwangju, Korea
| | - M S Jang
- Department of Dermatology, Kosin University College of Medicine, Busan, Korea
| | - K H Kim
- Department of Dermatology, Dong-A University Hospital, Busan, Korea
| | - M H Kim
- Department of Dermatology, Dankook University Hospital, Cheonan, Korea
| | - T Y Kim
- Department of Dermatology, Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Korea
| | - J-H Choi
- Department of Dermatology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Nakarmi B, Zhang X, Won YH. All-optical 4x10 Gbps NAND gate using single mode Fabry-Pérot laser diode. Opt Express 2015; 23:26952-26961. [PMID: 26480356 DOI: 10.1364/oe.23.026952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate all-optical 4x10 Gbps NAND gate with an individual input data rate of 10 Gbps using single mode Fabry-Pérot laser diode. The proposed scheme is based on the principle of multi-input injection locking. All-optical NAND gate is one of the universal logic gates which can be used for realizing all other logic gates for optical communication and networks. The output performance of the proposed all-optical multi-input NAND gate is verified with output spectrum domain results, waveforms, rising-falling time, and eye diagram measurement at 10 Gbps input. The ON/OFF contrast ratio of 41 dB is measured at the spectrum domain output when all four input beams are logic high. In all other combinations of four inputs, maximum ON/OFF contrast ratio of 1.5 dB ON/OFF is measured. Clear output waveform, output eye diagram with an extinction ratio of about 11 dB, and rising-falling time of about 35 ps are obtained. The BER measurement is carried out and we found the power penalty of about 1.7 dB at BER of 10(-9).
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Park BM, Ahn JS, Lee JB, Won YH, Yun SJ. Chronic active Epstein-Barr virus infection-associated hydroa vacciniforme-like eruption and Behçet's-like orogenital ulcers. Dermatology 2013; 226:212-6. [PMID: 23751255 DOI: 10.1159/000348709] [Citation(s) in RCA: 5] [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: 12/11/2012] [Accepted: 02/04/2013] [Indexed: 11/19/2022] Open
Abstract
The cutaneous manifestations of chronic active Epstein-Barr virus (EBV) infection can be diverse. Among them, hydroa vacciniforme-like eruption is one of the best-known features. Although rare, mucosal ulcers have been reported to be associated with EBV as a result of primary infection or immune suppression. We describe a 65-year-old female with recurrent necrotic papulovesicles on the face and both arms for 2 years. She also complained of recurrent oral and genital mucosal ulcers developing simultaneously with skin eruptions. They appeared periodically during the spring and summer and were triggered or aggravated by sun exposure. Skin biopsies from the face and genitalia showed identical findings with dense lymphocytic infiltrations. In addition, in situ hybridization revealed EBV-positive lymphoid cells in both specimens. To our knowledge, this is the first case of serologically and pathologically proven chronic active EBV infection presenting hydroa vacciniforme-like eruption and orogenital ulcers at the same time in one patient.
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Affiliation(s)
- B M Park
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
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Yun SJ, Park HY, Lee JS, Park MH, Lee JB, Won YH. Clinicopathological correlation of cutaneous metastatic breast carcinoma using lymphatic and vascular markers: lymphatics are mainly involved in cutaneous metastasis. Clin Exp Dermatol 2012; 37:744-8. [PMID: 22329727 DOI: 10.1111/j.1365-2230.2011.04306.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Precise clinicopathological correlations of the clinical features of metastatic breast carcinoma with lymphatic-specific markers are rare. We classified 28 patients with metastatic breast carcinoma according to their clinical features. Immunohistochemical staining was performed using D2-40, CD31 and CD34. Of the 28 patients, 8 (28.6%) had inflammatory metastatic carcinoma, 6 (21.4%) had the telangiectatic type, 5 had the nodular type, 3 had the en cuirasse type, 3 had alopecia neoplastica, and 3 had a combination of features. D2-40 staining revealed dilated lymphatic channels (lymphangiectasia) in the upper dermis of all patients; in addition, 13 patients (46.4%) had intralymphatic tumour-cell emboli, which were common in those with the inflammatory and telangiectatic types. Intratumoral lymphatic invasion in the main tumour nodule was seen in 12 patients (42.9%). Our results suggest that cutaneous metastatic breast carcinomas have various clinical presentations, and that lymphatic vessels play an important role in all types of cutaneous metastasis.
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Affiliation(s)
- S J Yun
- Departments of Dermatology Pathology General surgery, Chonnam National University Medical School, Gwangju, Korea.
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Padalkar S, Schroeder K, Won YH, Jang HS, Stanciu L. Biotemplated silica and titania nanowires: synthesis, characterization and potential applications. J Nanosci Nanotechnol 2012; 12:227-235. [PMID: 22523970 DOI: 10.1166/jnn.2012.5128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A simple biotemplating method for the synthesis of silica (SiO2) and titania (TiO2) nanowires was designed on a fibrillar protein (alpha-synuclein) template. The diameter of SiO2 and TiO2 nanowires could be varied, between 20-100 nm, by varying the processing conditions. The nanowires were characterized by energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS). Due to their high surface area and porosity, the nanowires were tested for potential applications in enzymatic biosensor design.
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Affiliation(s)
- S Padalkar
- School of Materials Engineering, Purdue University, West Lafayette, IN 47906, USA
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Kim JH, Shin JH, Shin DH, Moon MW, Park K, Kim TH, Shin KM, Won YH, Han DK, Lee KR. Comparison of diamond-like carbon-coated nitinol stents with or without polyethylene glycol grafting and uncoated nitinol stents in a canine iliac artery model. Br J Radiol 2011; 84:210-5. [PMID: 21325363 DOI: 10.1259/bjr/21667521] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE Neointimal hyperplasia is a major complication of endovascular stent placement with consequent in-stent restenosis or occlusion. Improvements in the biocompatibility of stent designs could reduce stent-associated thrombosis and in-stent restenosis. We hypothesised that the use of a diamond-like carbon (DLC)-coated nitinol stent or a polyethylene glycol (PEG)-DLC-coated nitinol stent could reduce the formation of neointimal hyperplasia, thereby improving stent patency with improved biocompatibility. METHODS A total of 24 stents were implanted, under general anaesthesia, into the iliac arteries of six dogs (four stents in each dog) using the carotid artery approach. The experimental study dogs were divided into three groups: the uncoated nitinol stent group (n = 8), the DLC-nitinol stent group (n = 8) and the PEG-DLC-nitinol stent group (n = 8). RESULTS The mean percentage of neointimal hyperplasia was significantly less in the DLC-nitinol stent group (26.7±7.6%) than in the nitinol stent group (40.0±20.3%) (p = 0.021). However, the mean percentage of neointimal hyperplasia was significantly greater in the PEG-DLC-nitinol stent group (58.7±24.7%) than in the nitinol stent group (40.0±20.3%) (p = 0.01). CONCLUSION Our findings indicate that DLC-coated nitinol stents might induce less neointimal hyperplasia than conventional nitinol stents following implantation in a canine iliac artery model; however, the DLC-coated nitinol stent surface when reformed with PEG induces more neointimal hyperplasia than either a conventional or DLC-coated nitinol stent.
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Affiliation(s)
- J H Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Bae YI, Yun SJ, Lee JB, Kim SJ, Won YH, Lee SC. A clinical and epidemiological study of lupus erythematosus at a tertiary referral dermatology clinic in Korea. Lupus 2009; 18:1320-6. [PMID: 19884217 DOI: 10.1177/0961203309345769] [Citation(s) in RCA: 10] [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] [Indexed: 11/16/2022]
Abstract
Dermatological examination is critical for the evaluation of lupus erythematosus. However, little is known about the epidemiology and clinical characteristics of the lupus erythematosus patients that visit dermatology clinics with the chief complaint of skin lesions, especially among Asian populations. We performed this study to determine the epidemiology of cutaneous lupus erythematosus for three subtypes: acute cutaneous lupus erythematosus, subacute cutaneous lupus erythematosus, and chronic cutaneous lupus erythematosus, and for lupus erythematosus non-specific skin disease. Also, we sought to determine the relationship between each type of lupus erythematosus, by the skin manifestations and systemic lupus erythematosus. The medical records of lupus erythematosus patients that were diagnosed by their clinical manifestations, skin biopsy results, and laboratory findings from January 1998 through December 2007 were reviewed. A total of 117 patients were diagnosed with lupus erythematosus; 62 cases had chronic cutaneous lupus erythematosus, 11 had subacute cutaneous lupus erythematosus, and 41 had acute cutaneous lupus erythematosus. The remaining three had systemic lupus erythematosus features with lupus erythematosus non-specific skin lesions such as Raynaud phenomenon, livedo reticularis/vasculitis, non-scarring alopecia, and periungual telangiectasia. The acute cutaneous lupus erythematosus subgroup showed extreme female predominance (9.2:1) whereas subacute and chronic cutaneous lupus erythematosus subgroups did not. Patients with chronic cutaneous lupus erythematosus tended to be older than other groups (peak incidence in the fifth decade). Incidence of laboratory abnormalities, including positive connective tissue markers such as antinuclear, double-strand DNA, and Ro/SS-A antibodies, were present in the order acute, subacute, and chronic cutaneous lupus erythematosus. Acute cutaneous lupus erythematosus almost always indicated systemic involvement of lupus erythematosus, whereas chronic cutaneous lupus erythematosus did not predict the development or existence of systemic lupus erythematosus and had a benign clinical course. Careful consideration of lupus erythematosus non-specific skin lesions may help detect systemic lupus erythematosus regardless of the diagnosis of cutaneous lupus erythematosus.
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Affiliation(s)
- Y I Bae
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
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Abstract
Dapsone has potent anti-inflammatory effects, and is used in the treatment of leprosy, cutaneous vasculitis, neutrophilic dermatoses, and dermatitis herpetiformis and other blistering disorders. However, it may cause severe adverse reactions such as hypersensitivity syndrome, which is characterized by fever, skin rash, hepatitis and lymphadenopathy. We report a 44-year-old female Korean patient with dapsone hypersensitivity syndrome (DHS) that presented as a bullous skin eruption. The patient had a 1-year history of urticarial vasculitis, treated with antihistamines, prednisolone and dapsone. Although the skin lesions improved, she reported fever, nausea, abdominal pain, jaundice, fatigue and skin rashes. On physical examination, there were generalized erythematous macules and purpura with facial oedema that developed into vesicles on the upper limbs. Histological examination of a skin biopsy of a vesicular lesion found subepidermal oedema with a mixed inflammatory cell infiltrate, including eosinophils in the dermis. Indirect immunofluorescence testing using normal foreskin as substrate revealed IgG deposits in the basement membrane zone. Circulating autoantibodies against antigens of 190 and 230 kDa were found by immunoblotting analysis using epidermal extracts. This case illustrates DHS with the formation of circulating autoantibodies.
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Affiliation(s)
- J S Chun
- Department of Dermatology, Brain Korea 21 Project, Chonnam National University Medical School, Gwangju, Korea
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Won CH, Seo PG, Park YM, Yang JM, Lee KH, Sung KJ, Park CW, Kim DW, Chang HS, Won YH, Kim KH. A multicenter trial of the efficacy and safety of 0.03% tacrolimus ointment for atopic dermatitis in Korea. J DERMATOL TREAT 2009; 15:30-4. [PMID: 14754647 DOI: 10.1080/09546630310020812] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Atopic dermatitis is a chronically relapsing, common inflammatory skin disease, which significantly affects quality of life negatively in many respects. Topical steroids are the mainstay of atopic dermatitis treatment but they carry the risk of local side effects. A topical formulation of tacrolimus, a macrolide calcineurin inhibitor, has recently been developed. OBJECTIVE To evaluate the efficacy and safety of 0.03% tacrolimus ointment for the treatment of moderate to severe atopic dermatitis in Korea. METHODS An open, non-comparative, multi-center study with 4 weeks' follow-up was performed. A total of 180 patients (aged 2-57 years old) were enrolled. Tacrolimus ointment (0.03%) was applied to all involved areas twice daily. Efficacy was evaluated by an investigator's global assessment, the eczema area and severity index score, and by the patient's assessment of pruritus and clinical response at baseline, and after weeks 1, 2 and 4. Dermatology life quality index (DLQI), children's DLQI (CDLQI) and toddler's DLQI were assessed at baseline and at week 4. The safety assessment included monitoring all adverse events and clinical laboratory values. RESULTS All efficacy parameters were improved. The mean EASI (eczema area and severity index) score was 19.7 at baseline and reduced to 8.0 at the end of the study. Moderate improvement was observed by the investigator's global assessment after 4 weeks' treatment. A marked decrease of pruritus was observed, and mild or moderate improvement was observed by patients' global assessments after the treatment period. Significant benefits in terms of quality of life in adults and children with atopic dermatitis were obtained. The most common adverse events associated with tacrolimus treatment were transient skin burning sensation (45.3%) and pruritus (41.6%) at the site of application. CONCLUSION 0.03% tacrolimus ointment should be considered effective and safe in both Korean children and adults with moderate to severe atopic dermatitis.
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Affiliation(s)
- C H Won
- Department of Dermatology, Seoul National University Hospital, Korea
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Kim SJ, Lim SU, Won YH, An SS, Lee EY, Moon SJ, Kim J. The perception threshold measurement can be a useful tool for evaluation of sensitive skin. Int J Cosmet Sci 2008. [PMID: 18822038 DOI: 10.1111/j.1468-2494.2008.00434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Sensitive skin is characterized by subjective symptoms that are hard to quantify. However, a neurobiological approach could improve our understanding of the nature of skin sensitivity. In this study, we measured the sensory perception of well-controlled electric currents on the skin that stimulated sensory nerve fibres such as the myelinated A fibre, A delta fibre and unmyelinated c-fibre. The sensory perception thresholds were obtained quantitatively from subjects with sensitive-prone skin and controls. Application of 0.075% capsaicin, known to stimulate the nociceptor c-fibre, was topically applied; then the sensory perception thresholds were measured to determine whether the exposure to nociceptive stimulation could affect the subsequent sensory perception. The results showed that the perception thresholds of skin sensitive-prone subjects were low for the c-fibre measurements at 5 Hz electric current stimulation. Furthermore, a wide variation in sensory perception was noted in the skin sensitive-prone subjects after topical application of capsaicin. In conclusion, the abnormal sensory perception in individuals with sensitive skin appears to be related to neurological instability, where c-fibre nociception plays a role. Thus, quantitative sensory perception threshold measurement was found to be a useful method for the identification of skin sensitive-prone subjects.
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Affiliation(s)
- S-J Kim
- Department of Dermatology, Chonnam University Medical School, Hack-Dong 8, Gwangju 501-757, Korea.
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Eun HC, An S, Lee H, Lee A, Lee CH, Kim DW, Moon KC, Won YH, Ro YS, Hahm JH, Kim KJ. FS14.1
Safety of various fragrances: allergy and phototoxicity, joint study in Korea. Contact Dermatitis 2008. [DOI: 10.1111/j.0105-1873.2004.00309ea.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yun SJ, Shin MG, Choi C, Kim HJ, Lee JB, Kim SJ, Lee SC, Won YH. Fatal disseminated angioinvasive Fusarium falciforme infection in a patient with acute myeloid leukaemia. Br J Dermatol 2007; 157:407-9. [PMID: 17573871 DOI: 10.1111/j.1365-2133.2007.08020.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
We report a rare case of cutaneous abscess by Trichosporon asahii in an immunocompetent adult. A 31-year-old Korean woman presented to our hospital with a cutaneous abscess. She had received an intralesional steroid injection 4 months earlier on the site of a hypertrophic scar. Direct sequencing of the intergenic spacer regions of the rRNA genes identified T. asahii. The decreased local immunity after the steroid injection might have triggered the infection by T. asahii. A cutaneous abscess formation by T. asahii in an immunocompetent patient is an unusual cutaneous finding that to our knowledge has not been reported previously. The local immune reaction of the skin is important for the prevention of Trichosporon infection.
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Affiliation(s)
- S J Yun
- Department of Dermatology, Chonnam National University Medical School, Dong-gu, Gwangju, South Korea
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Yun SJ, Kim EJ, Kim SJ, Lee SC, Won YH, Lee JB. The association of naevus lipomatosus with pilosebaceous abnormalities including fibrofolliculoma. Br J Dermatol 2005; 153:209-10. [PMID: 16029355 DOI: 10.1111/j.1365-2133.2005.06683.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yun SJ, Kim SJ, Won YH, Lee SC. Milia Developed on Lichen Striatus of the Face. Ann Dermatol 2003. [DOI: 10.5021/ad.2003.15.4.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Bang D, Lee JH, Lee ES, Lee S, Choi JS, Kim YK, Cho BK, Koh JK, Won YH, Kim NI, Park SD, Ahn HJ, Lee YW, Wang HY, Lee WW, Eun HC, Song ES, Lee SW, Lee CW, Lee CJ, Park JH, Song YW, Kim ST, Kim CY, Park JK, Kwon KS. Epidemiologic and clinical survey of Behcet's disease in Korea: the first multicenter study. J Korean Med Sci 2001; 16:615-8. [PMID: 11641532 PMCID: PMC3057606 DOI: 10.3346/jkms.2001.16.5.615] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The prevalence of Behcet's disease is the highest in the East Asian and the Mediterranean countries. Behcet's disease is also distributed in the Asian countries, but the nationwide survey has not been performed in Korea yet. The Korean Study Group for Behcet's Disease, founded in 1999, conducted a multicenter, retrospective survey on epidemiologic and clinical features of the patients with Behcet's disease from 20 hospitals around the nation from 1997 to 1999. Of 3,497 patients, 1,527 were classified into complete or incomplete type of Behcet's disease according to the revised Shimizu's classification. The sex ratio was 1:1.75 with the female predominance. Geographical distribution showed the highest frequency in Seoul (38.5%). Clinically, 98.8% had oral ulcers, 83.2% had genital ulcers, 84.3% had skin lesions and 50.9% had ocular lesions. As for the minor clinical manifestations, articular symptoms were the most frequent. The pathergy test showed positive in 15.4% of patients and revealed a higher positive rate in males (20.2%) than in females (12.7%). In conclusion, we performed the first multicenter study on Behcet's disease in Korea and revealed the female predominance, higher frequency of ocular lesions, and lower positivity of pathergy test in the patients.
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Affiliation(s)
- D Bang
- Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.
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Lee SC, Kim DH, Won YH. Multiple sterile abscesses in antiphospholipid antibody syndrome. Cutis 2001; 68:283-4, 286. [PMID: 11710448] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- S C Lee
- Department of Dermatology, Chonnam University Medica School, Kwangju, Korea.
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Abstract
We report a 56-year-old Korean woman with porphyria cutanea tarda (PCT), showing multiple scarring bullae and hypertrichosis on sun-exposed areas of skin with postinflammatory hyperpigmentation. Sclerodermoid changes were also found on both hands, the face and neck. The patient had suffered from CREST syndrome, manifesting with Raynaud's phenomenon and sclerodactyly, for more than 15 years. Anticentromere antibody was positive. She had presented with splenomegaly 3 years before the development of PCT, and was diagnosed as having idiopathic myelofibrosis, based on bone marrow biopsy. In summary, she had had CREST syndrome for 15 years and later developed idiopathic myelofibrosis and PCT. This is the first reported case of PCT in association with idiopathic myelofibrosis and CREST syndrome.
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Affiliation(s)
- S C Lee
- Department of Dermatology, Chonnam National University Medical School, 8 Hak-dong, Dong-ku, Kwangju 501-757, Korea (South).
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Lee SC, Chae HZ, Lee JE, Kwon BD, Lee JB, Won YH, Ahn KY, Kim YP. Peroxiredoxin is ubiquitously expressed in rat skin: isotype-specific expression in the epidermis and hair follicle. J Invest Dermatol 2000; 115:1108-14. [PMID: 11121149 DOI: 10.1046/j.1523-1747.2000.00177.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Peroxiredoxins are a family of peroxidases that are ubiquitously and abundantly expressed in mammalian tissues; however, comparatively less is known about their expression in the skin. In this study, we examined the expression of three isotypes of peroxiredoxins (I-III) in rat skin. Western blot analyses showed strong expression of peroxiredoxins I-III in the epidermis and dermis of intact skin. Additionally, they were expressed in cultured rat keratinocytes and fibroblasts. Confocal image analyses revealed that peroxiredoxin II was present in the cytoplasm as a diffuse, reticulated pattern. In immunohistochemical staining of rat skin, peroxiredoxin expression was mainly localized to the epidermis, hair follicles, and sebaceous glands. In the epidermis, peroxiredoxins I and II were expressed in all layers with a gradient of increasing expression to the granular layer. In contrast, peroxiredoxin III was expressed in all layers with a gradient of expression decreasing to the granular layer. In the hair follicle, peroxiredoxins I-III were mainly expressed in the outer root sheath, except peroxiredoxin II, which was strongly expressed in the inner root sheath. In situ hybridization showed that mRNA expression was commensurate with the level of protein. Ultraviolet B radiation increased peroxiredoxin II expression in rat skin within 15 min after irradiation. From this study we conclude that peroxiredoxin isoforms are ubiquitously expressed in rat skin, and expression of at least peroxiredoxin II can be regulated by ultraviolet irradiation as a peroxidase in the skin. J Invest Dermatol 115:1108-1114 2000
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Affiliation(s)
- S C Lee
- Department of Dermatology, Chonnam National University Medical School, Kwangju, South Korea.
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Lee SC, Lee JW, Jung JE, Lee HW, Chun SD, Kang IK, Won YH, Kim YP. Protective role of nitric oxide-mediated inflammatory response against lipid peroxidation in ultraviolet B-irradiated skin. Br J Dermatol 2000; 142:653-9. [PMID: 10792214 DOI: 10.1046/j.1365-2133.2000.03409.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Ultraviolet (UV) irradiation is known to induce serious oxidative damage in the skin via lipid peroxidation. Nitric oxide (NO) synthesized by keratinocytes, melanocytes and endothelial cells in response to proinflammatory cytokines and UV radiation, has been reported to prevent UV-induced apoptosis in the skin. We have examined the effects of NO on UVB-induced lipid peroxidation in murine skin in vivo. UVB induced a dose-dependent increase in lipid peroxidation of skin extracts in vitro; however, lipid peroxidation in the skin in vivo remained unaffected at irradiation doses of less than 1.0 J cm-2 and decreased significantly at doses over 1.5 J cm-2 (P < 0.01). Time-delayed inhibition of lipid peroxidation in the skin in vivo was observed after irradiation at 1.5 J cm-2. Administration of N G-nitro-L-arginine methyl ester (L-NAME), an inhibitor of NO synthesis, enhanced lipid peroxidation (P < 0.05), while it suppressed the ear-swelling response (ESR), a biological marker of inflammation. By contrast, administration of sodium nitroprusside, an NO enhancer, suppressed lipid peroxidation (P < 0. 01), while it enhanced the ESR. Expression of inducible nitric oxide synthase (iNOS) was observed from 12 to 48 h postirradiation at doses of 0.4-1.6 J cm-2. The UVB-induced iNOS expression was markedly inhibited by L-NAME, suggesting that iNOS is a major enzyme in the production of NO. These results suggest that NO acts as a mediator of the inflammatory response in UVB-irradiated skin, and that lipid peroxidation is inversely regulated with the NO-mediated inflammatory response in vivo.
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Affiliation(s)
- S C Lee
- Department of Dermatology, Chonnam University Medical School, 8 Hak-dong, Dong-ku, Kwangju 501-757, Korea.
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Abstract
BACKGROUND Glycolic acid treatment is believed to reverse the photoaging process by increasing collagen synthesis in the skin. However, this effect has not been clearly defined even though alpha hydroxy acid products are used extensively. OBJECTIVE This study aimed to define the primary effect of glycolic acid on collagen synthesis that may be achieved by functional activation or proliferation of fibroblasts. METHODS Glycolic acid treatment was compared in vivo with lactic acid (hairless mice) and in vitro to malic acid (normal human skin fibroblast culture) with controls. To find the functional activation of fibroblasts, Northern blot assay for type I collagen synthesis with histometric analysis (in vivo) was performed. Cell proliferation assay (MTT) with procollagen type I C-peptide (PICP) enzyme immunoassay and radioisotope ([3H]proline) incorporated collagen production from cultured fibroblasts were determined. RESULTS The in vivo collagen mRNA expression with histometric analysis revealed greater collagen synthesis by glycolic acid compared with lactic acid and control. In vitro cell proliferative effect of glycolic and greater amount of collagen production showed a steady increase in a dose-dependent manner. CONCLUSION Both in vivo and in vitro, glycolic acid treatment increased the production of collagen and fibroblast proliferation. These effects may be the mechanism by which glycolic acid reverses the process of photoaging.
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Affiliation(s)
- S J Kim
- Department of Dermatology, Chonnam University Research Institute of Medical Science, Chonnam National University Medical School, Kwangju, Korea
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Affiliation(s)
- S C Lee
- Department of Dermatology, Chonnam University Medical School, Kwangju, South Korea
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28
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Abstract
OBJECTIVES Both benign prostatic hyperplasia (BPH) and male pattern baldness (androgenic alopecia) share the pathogenesis of an androgen-dependent disorder and afflict a large population of elderly men with chronobiologic progress. However, it is unclear whether these diseases are related epidemiologically. We evaluated the association of frequency and severity of male pattern baldness between patients with BPH and a control group. METHODS A total of 225 patients with BPH (mean age 69.3 +/- 6.5 years) and 1 60 controls (mean age 68.5 +/- 6.4 years), all over 60 years of age, were included in this study. The estimation of baldness severity was based on Norwood's classification (grade I to VII). The International Prostate Symptom Score (IPSS) and genetic tendency for baldness were also evaluated. The difference between IPSS and grade of baldness between the two groups was analyzed by the Mann-Whitney test and the frequency of inherited baldness was compared by the chi-square test. Correlation between severity of baldness and IPSS in each group was estimated by Spearman's rank correlation method. RESULTS The patients with BPH had an apparently higher grade of male pattern baldness in comparison with that of controls (median value of grade IV versus III, P <0.001). The proportion of men with male pattern baldness of grade IV or higher in the BPH group was significantly larger than that of controls (53.8% versus 36.9%, P <0.01). There was a greater frequency of inherited baldness in the BPH group than in the controls (31.6% versus 12.5%, P <0.001). No significant correlation was noted between baldness severity and IPSS in either group. CONCLUSIONS This study demonstrates a strong association of BPH with male pattern baldness.
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Affiliation(s)
- B R Oh
- Department of Urology, Chonnam University Medical School, Kwangju, South Korea
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Kim SJ, Won YH. The effect of glycolic acid on cultured human skin fibroblasts: cell proliferative effect and increased collagen synthesis. J Dermatol 1998; 25:85-9. [PMID: 9563274] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Glycolic acid peeling is known to improve photoaging processes such as wrinkling and roughness, but this effect has not been clearly defined, even though functional activation of fibroblasts has been suggested. The study was aimed to determine the effects of glycolic acid and malic acid (AHA: alpha hydroxy acid) on cultured dermal fibroblasts. Whether it directly increases cell proliferation may be an important factor influencing the production of extracellular matrix such as type I collagen. Cultured human skin fibroblasts were treated for 24 hours with glycolic acid and malic acid at different concentrations (10(-4), 10(-5), 10(-6) M), and cell proliferation was measured by MTT assay. Then quantitative analysis of collagen synthesis was performed by PICP (Procollagen Type I C-peptide) enzyme immunoassay and radioisotope (3H-proline) labelled collagen assay. The results showed increased cell proliferation and collagen production in response to glycolic acid in a dose dependent manner. The range of cell proliferation and collagen production were significantly higher with glycolic acid treatment than with malic acid or control. It was suggested that the favorable effects of glycolic acid treatment on aging skin were mediated by increased cell proliferation in addition to functional activation of fibroblasts.
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Affiliation(s)
- S J Kim
- Department of Dermatology, Chonnam University Research Institute of Medical Science, Chonnam National University Medical School, Kwangju, Korea
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Abstract
Ginkgo biloba studies have focused on the anti-inflammatory effects of the major components, ginkgolide and bilobalide, whereas little is known about their effect on fibroblasts. This study demonstrated the enhancing effects of Ginkgo L. extracts, especially the flavonoid fractions: quercetin, kaempferol, sciadopitysin, ginkgetin, isoginkgetin, on the proliferation of normal human skin fibroblast in vitro measured by MTT (3-[4,5-dimethylthiazole-2-yl]-2,5-diphenyl-tetrazolium bromide) assay and direct hemocytometer cell count. Furthermore, increased production of collagen and extracellular fibronectin were documented by radioisotope (2,3-3H-proline) incorporated collagen assay, procollagen type I C-peptide assay and by immunoturbidimetric assay. These proliferative effects suggest another useful pharmacologic application of Ginkgo L. extracts in addition to their well-known anti-inflammatory effect.
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Affiliation(s)
- S J Kim
- Department of Dermatology, Chonnam University Medical School, Kwangju, Korea
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Lee HW, Park MA, Lee SC, Won YH, Chun IK. A case of actinic granuloma associated with periumbilical perforating pseudoxanthoma elasticum. Acta Derm Venereol 1996; 76:133-5. [PMID: 8740268 DOI: 10.2340/0001555576133135] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We report an unusual case of actinic granuloma of the face and periumbilical perforating pseudoxanthoma elasticum located superior to the umbilicus in a 57-year-old Korean woman. Histopathologically, these two dermatoses have a similar degeneration of elastic fibers, but they show different host reactions to the altered elastic fibers. In the actinic granuloma, actinically damaged elastic fibers were followed by granulomatous infiltration on the sun-exposed area, while in the perforating pseudoxanthoma elasticum, the altered elastic fibers induced a foreign body reaction, with subsequent transepidermal elimination. This is the first case report showing both actinic granuloma and periumbilical perforating pseudoxanthoma elasticum in the same patient, which suggests that the basic mechanism eliciting these dermatoses is similar.
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Affiliation(s)
- H W Lee
- Department of Dermatology, Chonnam University Medical School, Kwangju, Korea
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Abstract
The immunosuppressive peptide cyclosporin A (CyA) is an extremely effective therapy for severe recalcitrant psoriasis, although its mechanism of action is unknown. In this study, we examined the effect of CyA on keratinocyte growth and cytokine expression, and showed that CyA inhibits the growth of murine and human keratinocytes (KC) and KC cell lines. In addition, CyA inhibits the expression of cytokine genes in a dose-dependent fashion. After 2 days' incubation with 20 microM CyA, interleukin-1 alpha (IL-1 alpha), interleukin-1 beta (IL-1 beta), and interleukin 8 (IL-8) mRNA were decreased by 4-fold, 3.3-fold and 3.3-fold, respectively, in COLO-16, a keratinocyte cell line. IL-1 biological activity recovered from COLO-16 culture supernatants decreased to one-fifth of that of controls. In the murine KC cell line PAM 212, 10 microM CyA treatment for 2 days downregulated IL-1 alpha, tumour necrosis factor-alpha (TNF-alpha) and IL-1 receptor by 60%, but had no effect on the message for interleukin 3 (IL-3), granulocyte-macrophage colony-stimulating factor (GM-CSF), ornithine decarboxylase and beta-actin. Cells cultured for 5 days in the presence of CyA required much lower concentrations (2 microM) to achieve the same degree of inhibition of IL-1 alpha. Similar tissue concentrations of CyA have been reported in psoriatics undergoing CyA therapy.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- Y H Won
- Division of Dermatology, University of Toronto, Sunnybrook Health Science Centre, Ontario, Canada
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