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Nam KH, Lee SK, Lee IJ, Park J, Yun SK. Clinicopathological and immunohistochemical characteristics of bullous pilomatricoma: a retrospective, single-center study, and comparison with ordinary pilomatricoma. An Bras Dermatol 2024; 99:362-369. [PMID: 38350760 DOI: 10.1016/j.abd.2023.06.007] [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: 05/10/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Bullous pilomatricoma is a rare variant of pilomatricoma. As it has been published in sporadic case reports, a limited understanding of its clinicopathological characteristics restricts its effective diagnosis and treatment. OBJECTIVES This study aimed to analyze the clinicopathological and immunohistochemical characteristics of bullous pilomatricoma to better understand the bullous transformation of pilomatricoma. METHODS The authors conducted a retrospective study of 12 patients with bullous pilomatricoma and compared their clinical, histopathological, and immunohistochemical data with those of patients with ordinary pilomatricoma. RESULTS Bullous pilomatricoma showed no sex preference, with a mean onset age of 31.2 years. The common sites were the upper extremities and trunk. Bullous pilomatricoma had a shorter disease duration, a larger diameter, and a greater tendency to increase in size than those of ordinary pilomatricoma. Histopathologically, bullous pilomatricoma had a shorter duration, lesser calcification, more mitotic figures, and distinct dermal features from those of ordinary pilomatricoma. Immunohistochemically, the expression of Matrix Metalloprotease (MMP)-2, MMP-9, vascular endothelial growth factor receptor-3 (VEGFR-3), and VEGF-C was elevated. STUDY LIMITATIONS The study was retrospective, and the sample size was small. CONCLUSION The distinctive features of bullous pilomatricoma potentially result from dermal changes associated with the release of angiogenic factors and proteolytic enzymes. This comprehensive analysis provides novel insights into the clinical features and pathogenesis of bullous pilomatricoma.
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Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University - Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.
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Kim HE, Lee JY, Yoo DH, Park HH, Choi EJ, Nam KH, Park J, Choi JK. Imidazole propionate ameliorates atopic dermatitis-like skin lesions by inhibiting mitochondrial ROS and mTORC2. Front Immunol 2024; 15:1324026. [PMID: 38533495 PMCID: PMC10964488 DOI: 10.3389/fimmu.2024.1324026] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/20/2024] [Indexed: 03/28/2024] Open
Abstract
Background Imidazole propionate (IMP) is a histidine metabolite produced by some gut microorganisms in the human colon. Increased levels of IMP are associated with intestinal inflammation and the development and progression of cardiovascular disease and diabetes. However, the anti-inflammatory activity of IMP has not been investigated. This study aimed to elucidate the role of IMP in treating atopic dermatitis (AD). Methods To understand how IMP mediates immunosuppression in AD, IMP was intraperitoneally injected into a Dermatophagoides farinae extract (DFE)/1-chloro-2,4 dinitrochlorobenzene (DNCB)-induced AD-like skin lesions mouse model. We also characterized the anti-inflammatory mechanism of IMP by inducing an AD response in keratinocytes through TNF-α/IFN-γ or IL-4 stimulation. Results Contrary to the prevailing view that IMP is an unhealthy microbial metabolite, we found that IMP-treated AD-like skin lesions mice showed significant improvement in their clinical symptoms, including ear thickness, epidermal and dermal thickness, and IgE levels. Furthermore, IMP antagonized the expansion of myeloid (neutrophils, macrophages, eosinophils, and mast cells) and Th cells (Th1, Th2, and Th17) in mouse skin and prevented mitochondrial reactive oxygen species production by inhibiting mitochondrial energy production. Interestingly, we found that IMP inhibited AD by reducing glucose uptake in cells to suppress proinflammatory cytokines and chemokines in an AD-like in vitro model, sequentially downregulating the PI3K and mTORC2 signaling pathways centered on Akt, and upregulating DDIT4 and AMPK. Discussion Our results suggest that IMP exerts anti-inflammatory effects through the metabolic reprogramming of skin inflammation, making it a promising therapeutic candidate for AD and related skin diseases.
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Affiliation(s)
- Ha Eun Kim
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Jong Yeong Lee
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Dong-Hoon Yoo
- Department of Sports Rehabilitation and Exercise Management, University of Gyeongnam Geochang, Geochang-gun, Republic of Korea
| | - Hyo-Hyun Park
- Department of Clinical Pathology, Daegu Health College, Daegu, Republic of Korea
| | - Eun-Ju Choi
- Department of Physical Education, College of Education, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
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Lee JY, Lim HJ, Kim SH, Lee GJ, Nam KH, Park J, Choi JK. Decreased CD19 +CD24 hiCD38 hi Regulatory B Cells in Alopecia Areata. J Invest Dermatol 2024:S0022-202X(24)00160-X. [PMID: 38387525 DOI: 10.1016/j.jid.2024.02.004] [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: 09/11/2023] [Revised: 01/16/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024]
Affiliation(s)
- Jong Yeong Lee
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Hyo Jung Lim
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Sang-Hyun Kim
- Cell & Matrix Research Institute, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Geon-Jong Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea.
| | - Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, South Korea.
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Kim JS, Lee GJ, Jeong CY, Yeom SW, Nam KH, Yun SK, Park J. Risk of Alopecia Areata After COVID-19. JAMA Dermatol 2024; 160:232-235. [PMID: 38198177 PMCID: PMC10782381 DOI: 10.1001/jamadermatol.2023.5559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/10/2023] [Indexed: 01/11/2024]
Abstract
This cohort study examines the incidence, prevalence, and risk of alopecia areata after COVID-19.
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Affiliation(s)
- Jong-Seung Kim
- Department of Otorhinolaryngology–Head and Neck Surgery, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Geon-Jong Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Cho-Yun Jeong
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Sang-Woo Yeom
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Research Institute of Clinical Medicine of Jeonbuk National University Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Seok-Kweon Yun
- Research Institute of Clinical Medicine of Jeonbuk National University Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Research Institute of Clinical Medicine of Jeonbuk National University Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
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Park SK, Kwak HB, Park SW, Shin JY, Park J, Nam KH, Yun SK. Intravascular Papillary Endothelial Hyperplasia in Association with Eccrine Angiokeratomatous Hamartoma. Indian J Dermatol 2023; 68:725. [PMID: 38371572 PMCID: PMC10868974 DOI: 10.4103/ijd.ijd_189_17] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024] Open
Abstract
Eccrine angiokeratomatous hamartoma is a variant of eccrine angiomatous hamartoma. Histopathologically, it shows both features of eccrine angiomatous hamartoma with components of angiokeratoma. Eccrine angiokeratomatous hamartoma is extremely rare. Eccrine angiokeratomatous hamartoma in our case co-existed with intravascular papillary endothelial hyperplasia. This is the first reported case.
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Affiliation(s)
- Su-Kyung Park
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Hyun-Bin Kwak
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Sang-Woo Park
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin-Yong Shin
- Department of Plastic Surgery, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Kyung-Hwa Nam
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Seok-Kweon Yun
- From the Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonbuk National University Medical School, Jeonju, South Korea
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Jung ES, Lee SK, Lee IJ, Nam KH, Yun SK, Kim HU, Park J. Three Cases of Recalcitrant Pediatric Tinea Capitis Successfully Treated with Griseofulvin. Ann Dermatol 2023; 35:S247-S251. [PMID: 38061714 PMCID: PMC10727883 DOI: 10.5021/ad.21.254] [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: 12/01/2021] [Revised: 02/07/2022] [Accepted: 03/22/2022] [Indexed: 12/20/2023] Open
Abstract
Tinea capitis is an infection of the scalp hair follicles and surrounding skin that primarily occurs in prepubertal children. Microsporum canis remains the most common pathogen causing tinea capitis in Asian countries, including South Korea, although the causative organism of this condition varies across geographical regions and time periods. Systemic antifungal agents are the mainstay treatments for tinea capitis; however, the therapeutic responses to antifungal drugs may vary depending on the causative species, and treatment failure may occur owing to drug resistance. Although dermatophytosis resistant to clinical treatment have been increasingly encountered, recalcitrant tinea capitis cases have rarely been reported. Herein, we report three cases of tinea capitis caused by M. canis in children. All three patients showed unsatisfactory clinical responses to prolonged courses of oral terbinafine or itraconazole without achieving mycological cure; however, they were successfully treated with oral griseofulvin. Although griseofulvin is not currently available or licensed for use in many countries, including South Korea, it is one of the most effective agents against Microsporum species and remains the most widely used first-line treatment for tinea capitis in children, based on dermatology textbooks and reliable treatment guidelines.
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Affiliation(s)
- Eui-Sung Jung
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Han-Uk Kim
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
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Nam KH, Lee SK, Lee IJ, Park J, Yun SK. Cutaneous Horn Arising from Angiokeratoma Associated with Underlying Dermatofibroma. Indian J Dermatol 2023; 68:463-464. [PMID: 37822412 PMCID: PMC10564217 DOI: 10.4103/ijd.ijd_644_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
Affiliation(s)
- Kyung-Hwa Nam
- From the Department of Dermatology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea E-mail:
| | - Sang-Kyung Lee
- From the Department of Dermatology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Il-Jae Lee
- From the Department of Dermatology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Jin Park
- From the Department of Dermatology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea E-mail:
| | - Seok-Kweon Yun
- From the Department of Dermatology, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea E-mail:
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Nam KH, Lee GJ, Kim JI, Song KH, Park J. Home-based diphenylcyclopropenone immunotherapy for alopecia areata: A large retrospective study of 94 cases. J Dermatol 2023. [PMID: 37334761 DOI: 10.1111/1346-8138.16863] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/27/2023] [Accepted: 06/01/2023] [Indexed: 06/20/2023]
Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Geon-Jong Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Joo-Ik Kim
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Ki-Hun Song
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
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Yun SK, Lee IJ, Woo SH, Nam KH. Wedge-shaped hyperpigmentation of the forehead: a rare presentation of melanotic-type Becker's nevus. Eur J Dermatol 2023; 33:296-297. [PMID: 37594338 DOI: 10.1684/ejd.2023.4485] [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] [Indexed: 08/19/2023]
Affiliation(s)
- Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea, Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Soo-Han Woo
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea, Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
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Hao L, Nam KH, Lee GJ, Kim D, Shin JM, Lee Y, Kim CD, Kim SJ, Yun SK, Park BH, Park J. SIRT1 downregulation provokes immune-inflammatory responses in hair follicle outer root sheath cells and may contribute to development of alopecia areata. J Dermatol Sci 2023:S0923-1811(23)00126-3. [PMID: 37268558 DOI: 10.1016/j.jdermsci.2023.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 05/04/2023] [Accepted: 05/23/2023] [Indexed: 06/04/2023]
Abstract
BACKGROUND Silent information regulator 1 (SIRT1), a type III histone deacetylase, is involved in various cutaneous and systemic autoimmune diseases including systemic lupus erythematosus, rheumatoid arthritis, and psoriasis. However, little is known about the role of SIRT1 in the development of alopecia areata (AA). OBJECTIVES This study investigated whether SIRT1 regulates the hair follicle immune system and is involved in AA pathogenesis. METHODS SIRT1 expression in human scalp tissue was analyzed using immunohistochemical staining, qPCR, and western blotting. The regulatory effect of SIRT1 was evaluated after stimulation with the double-stranded RNA mimic polyinosinic:polycytidylic acid (poly I:C) in hair follicle outer root sheath (ORS) cells and C3H/HeJ mice. RESULTS SIRT1 expression was significantly reduced in the AA scalp compared to the normal scalp. SIRT1 inhibition upregulated MHC class I polypeptide-related sequence A and UL16 binding protein 3 in hair follicle ORS cells. SIRT1 inhibition also promoted the production of Th1 cytokines (IFN-γ and TNF-α), IFN-inducible chemokines (CXCL9 and CXCL10), and T cell migration in ORS cells. Conversely, SIRT1 activation suppressed the autoreactive inflammatory responses. The counteractive effect of the immune response by SIRT1 was mediated through the deacetylation of NF-κB and phosphorylation of STAT3. CONCLUSION SIRT1 downregulation induces immune-inflammatory responses in hair follicle ORS cells and may contribute to AA development.
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Affiliation(s)
- Lihua Hao
- Department of Dermatology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, the Republic of Korea; Research Institute of Clinical Medicine of Jeonbuk National University and Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, the Republic of Korea
| | - Geon-Jong Lee
- Department of Dermatology, Chungnam National University Medical School, Daejeon, the Republic of Korea
| | - Doyeon Kim
- Department of Dermatology, Chungnam National University Medical School, Daejeon, the Republic of Korea
| | - Jung-Min Shin
- Department of Dermatology, Chungnam National University Medical School, Daejeon, the Republic of Korea
| | - Young Lee
- Department of Dermatology, Chungnam National University Medical School, Daejeon, the Republic of Korea
| | - Chang-Deok Kim
- Department of Dermatology, Chungnam National University Medical School, Daejeon, the Republic of Korea
| | - Seong-Jin Kim
- Department of Dermatology, Chonnam National University Medical School, Kwangju, the Republic of Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, the Republic of Korea; Research Institute of Clinical Medicine of Jeonbuk National University and Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, the Republic of Korea
| | - Byung-Hyun Park
- Research Institute of Clinical Medicine of Jeonbuk National University and Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, the Republic of Korea; Department of Biochemistry, Jeonbuk National University Medical School, Jeonju, the Republic of Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, the Republic of Korea; Research Institute of Clinical Medicine of Jeonbuk National University and Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, the Republic of Korea.
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Kwak HB, Lee SK, Yoo HH, Lee IJ, Lee GJ, Nam KH, Yun SK, Park J. Facial tinea incognito: a clinical, dermoscopic and mycological study of 38 cases. Eur J Dermatol 2023; 33:101-108. [PMID: 37431112 DOI: 10.1684/ejd.2023.4450] [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: 07/12/2023]
Abstract
BACKGROUND Tinea incognito (TI) is a dermatophytic infection of the skin that is modified by steroid use. As a result, it shows atypical clinical presentations that can lead to misdiagnosis. TI occurring on the face is most frequently misdiagnosed as cutaneous fungal infection, however, very limited information is available on facial TI. OBJECTIVES This study aimed to characterize the clinical, dermoscopic and mycological features of facial TI. MATERIALS & METHODS We retrospectively evaluated 38 patients with mycologically proven facial TI at a single institution in Korea between July, 2014 and July, 2021. RESULTS The patients had a mean age of 59.6 ± 20.4 years and showed a slight female predominance (male-to-female ratio of 1:1.38). The most common clinical presentation was an eczema-like pattern (47.4%), followed by rosacea-like (15.8%), psoriasis-like (10.5%), lupus erythematosus-like (10.5%), cellulitis-like (7.9%), and folliculitis-like (7.9%) patterns. The mean duration from disease onset to diagnostic confirmation was 3.4 months. Overall, 78.9% of the patients had accompanying chronic systemic diseases, and 57.9% had concurrent tinea infections at other skin sites, mainly the feet and toenails. On dermoscopy, scales and dilated vascular patterns (arborizing vessels and telangiectasia) were commonly observed on glabrous skin, with follicular patterns, such as black dots, broken hairs, and empty follicles. The characteristic trichoscopic features were comma, corkscrew, Morse code-like, and translucent hairs. CONCLUSION The clinical characteristics and distinct dermoscopic features described in this article may aid in the differential diagnosis of facial TI while reducing diagnostic delays and unnecessary treatments.
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Affiliation(s)
- Hyun-Bin Kwak
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Hyo-Hyun Yoo
- Department of Medical Education, Jeonbuk National University Medical School, Jeonju, Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Geon-Jong Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea, Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
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Nam KH, Kim B. Intra-abdominal desmoid fibromatosis mimicking tumour recurrence after the operation: A case series. Malays J Pathol 2023; 45:111-122. [PMID: 37119251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
INTRODUCTION Desmoid fibromatosis is a multifactorial disorder classified as a category of intermediate, locally aggressive behaviour, which might be associated with CTNNB1 or APC mutations, trauma, surgery, or pregnancy. CASE REPORTS We present two cases of postoperative intra-abdominal desmoid fibromatosis. The first case occurred 14 months after the resection of a retroperitoneal gastrointestinal stromal tumour. The second case was located in the mesentery, as evidenced on an 18-month followup after a laparoscopy-assisted anterior resection for adenocarcinoma at the rectosigmoid junction. Under the clinical diagnosis of recurrence, tissue excisions were conducted. Microscopically, the tissue was composed of bland spindle cells without cytological atypia, admixed with collagen bundles. Both tumours exhibited nuclear expression of β-catenin on immunohistochemical staining, which is a desirable criterion for desmoid fibromatosis. DISCUSSION Although positron emission tomography aids the diagnosis of recurrence, the radiological features of desmoid fibromatosis in computed tomography or magnetic resonance images are nonspecific and preoperative diagnosis of desmoid fibromatosis is difficult. The histological diagnosis of desmoid fibromatosis is difficult, especially when the specimen is small. The histological differential diagnosis of desmoid fibromatosis includes other myofibroblastic or fibroblastic tumours or lesions. Additional studies, such as β-catenin immunohistochemistry or CTNNB1 mutation analysis, can enable accurate diagnosis of desmoid fibromatosis. A correct diagnosis is essential, because the current therapeutic strategy is a "waitand- watch" approach, which is significantly different from those of the other locally aggressive, intermediate soft tissue neoplasms. We have summarised the clinicopathological, histological and immunohistochemical features of the post-operative desmoid fibromatosis.
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Affiliation(s)
- K H Nam
- Haeundae Paik Hospital, Department of Pathology, Inje University College of Medicine, Busan, South Korea
| | - B Kim
- Haeundae Paik Hospital, Department of Pathology, Inje University College of Medicine, Busan, South Korea.
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Kim JS, Lee IJ, Lee MG, Yeom SW, Nam KH, Yun SK, Park J. Periodontitis and risk of alopecia areata: A nationwide population-based cohort study in Korea. J Eur Acad Dermatol Venereol 2023; 37:e397-e399. [PMID: 36385505 DOI: 10.1111/jdv.18758] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
Affiliation(s)
- Jong-Seung Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Jeonbuk National University Medical School, Jeonju, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.,Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Min-Gyu Lee
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Sang-Woo Yeom
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Seok-Kweon Yun
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
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Yun SK, Lee SK, Park J, Nam KH. Deeper Dermal Dermatophytosis by Trichophyton rubrum Infection Mimicking Kaposi Sarcoma. Mycopathologia 2022; 187:611-612. [PMID: 35921000 DOI: 10.1007/s11046-022-00655-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 07/19/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, 54907, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, 54907, South Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, 54907, South Korea.,Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, 54907, South Korea. .,Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.
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Kim JS, Lee MG, Lee SK, Yeom SW, Kang MG, Lee JH, Lee IJ, Park J, Yun SK, Nam KH. Association of adenotonsillar disease and adenotonsillectomy with the development of vitiligo: A nationwide population-based cohort study. Front Med (Lausanne) 2022; 9:1004218. [PMID: 36405619 PMCID: PMC9669660 DOI: 10.3389/fmed.2022.1004218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/12/2022] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Vitiligo is a common acquired skin depigmentation disorder and is associated with various other autoimmune diseases which include thyroid disease and rheumatoid arthritis. Similarly, adenotonsillar disease (ATD) may induce inflammatory or autoimmune diseases in other organs which include the skin. However, the influence of ATD on the development of vitiligo has not been studied. OBJECTIVES To determine the association between ATD and adenotonsillectomy, and the development of vitiligo. DESIGN AND METHODS Using data from the National Health Insurance Service database, patients diagnosed with ATD between 2008 and 2010 were included in the study. We performed two rounds of 1:1 propensity score matching in the ATD and adenotonsillectomy groups. The ATD and non-ATD groups both included 206,514 individuals. Among the ATD group, the adenotonsillectomy and non-adenotonsillectomy groups both included 23,354 individuals. Each individual was monitored until 2019. The primary end point was the risk of vitiligo. Using the Cox Proportional Hazards model, the incidence of vitiligo and the hazard ratio (HR) were calculated. RESULTS The incidence of vitiligo was 1.16-fold higher in the ATD group than in the non-ATD group [adjusted HR (aHR), 1.16; 95% confidence interval (CI), 1.09-1.24] and 0.82-fold lower in the adenotonsillectomy group than in the non-adenotonsillectomy group (aHR, 0.82; 95% CI, 0.68-0.99). Additionally, the other risk factors for developing vitiligo included thyroid disease (aHR, 1.48; 95% CI, 1.11-1.98), age younger than 30 years (aHR, 1.18; 95% CI, 1.09-1.27), and age over 60 years (aHR, 1.22; 95% CI, 1.06-1.41), whereas factors including rural residency (aHR, 0.91; 95% CI, 0.85-0.98) and low economic status (aHR 0.87; 95% CI, 0.82-0.93) were associated with decreased incidence of vitiligo. CONCLUSION In this study, ATD increases the risk of vitiligo and adenotonsillectomy attenuates its development. Clinicians should consider ATD as a pathogenic factor for vitiligo and the potential effect of adenotonsillectomy in its management.
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Affiliation(s)
- Jong Seung Kim
- Department of Otorhinolaryngology, Head and Neck Surgery, Jeonbuk National University Medical School, Jeonju, South Korea,Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea,Research Institute of Clinical Medicine of Jeonbuk National University – Biomedical Research Institute, Jeonbuk National University, Jeonju, South Korea
| | - Min Gyu Lee
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Sang-Woo Yeom
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Min-Gu Kang
- Department of Medical Informatics, Jeonbuk National University, Jeonju, South Korea
| | - Jong Hwan Lee
- Department of Otorhinolaryngology, Head and Neck Surgery, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Research Institute of Clinical Medicine of Jeonbuk National University – Biomedical Research Institute, Jeonbuk National University, Jeonju, South Korea,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Seok-kweon Yun
- Research Institute of Clinical Medicine of Jeonbuk National University – Biomedical Research Institute, Jeonbuk National University, Jeonju, South Korea,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Research Institute of Clinical Medicine of Jeonbuk National University – Biomedical Research Institute, Jeonbuk National University, Jeonju, South Korea,Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea,*Correspondence: Kyung-Hwa Nam,
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Park J, Lee SK, Nam KH, Yun SK. P255 Facial Tinea incognito: a clinical, dermoscopic, and mycological study. Med Mycol 2022. [PMCID: PMC9509743 DOI: 10.1093/mmy/myac072.p255] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Poster session 2, September 22, 2022, 12:30 PM - 1:30 PM Objectives Tinea incognito (TI) occurring on the face is the most frequently misdiagnosed cutaneous fungal infection; however, very limited information is available on facial TI. This study aimed to characterize the clinical, dermoscopic, and mycological features of facial TI. Methods We retrospectively evaluated 38 patients with mycologically proven facial TI at a single institution in Korea between July 2014 and July 2021. Results The patients had a mean age of 59.6 ± 20.4 years and showed a slight female predominance (male-to-female ratio, 1:1.5). The most common clinical presentation was an eczema-like pattern (47.3%), followed by rosacea-like (15.7%), psoriasis-like (10.5%), lupus erythematosus-like (10.5%), cellulitis-like (7.8%), and folliculitis-like (7.8%) patterns. The mean duration from disease onset to diagnostic confirmation was 3.4 months. Overall, 78.9% of the patients had accompanying chronic systemic diseases and 57.9% had concurrent tinea infections on other skin sites, mainly on the feet and toenails. Among the 23 (60.5%) cultured specimens, Trichophyton (T.) rubrum was the most frequently detected causative species, followed by Microsporum (M.) canis. T. mentagrophytes and T. verrucosum were also isolated from one case each. On dermoscopy, scales (92.1%) and dilated vascular patterns (arborizing vessels and telangiectasia, 76.3% and 63.2%) were commonly observed in glabrous skin, with follicular patterns such as black dots, broken hairs, and empty follicles. The characteristic trichoscopic features were comma hairs, corkscrew hairs, Morse code-like hairs, and translucent hairs. Conclusion The clinical characteristics and distinct dermoscopic features described in this article can aid in the differential diagnosis of facial TI while reducing diagnostic delays and unnecessary treatments.
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Affiliation(s)
- Jin Park
- Department of Dermatology , Jeonbuk, National University Medical School, Jeonju , South Korea
| | - Sang-Kyung Lee
- Department of Dermatology , Jeonbuk, National University Medical School, Jeonju , South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology , Jeonbuk, National University Medical School, Jeonju , South Korea
| | - Seok-Kweon Yun
- Department of Dermatology , Jeonbuk, National University Medical School, Jeonju , South Korea
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Lee IJ, Yun SK, Nam KH. Arc-Shaped Furrow on the Forehead Extending From Linear Alopecia on the Vertex. JAMA Dermatol 2021; 158:101-102. [PMID: 34817534 DOI: 10.1001/jamadermatol.2021.4714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Il-Jae Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea.,Research Institute of Clinical Medicine and the Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea.,Research Institute of Clinical Medicine and the Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
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Nam KH, Jung ES, Park J, Yun SK. An Unusual Case of Cutaneous Pili Migrans: Pili Cuniculati Multiplex. Acta Derm Venereol 2021; 101:adv00494. [PMID: 34219174 PMCID: PMC9413803 DOI: 10.2340/00015555-3861] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, 54907 Jeonju, Korea. E-mail:
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Abstract
Background: Cutaneous fibrous histiocytoma (CFH) is a common, benign skin tumor predominantly occurring on the extremities or trunk. However, CFH on the finger is rare. Objective: This study was undertaken to examine the clinicohistopathological features of CFH of the finger. Materials and Methods: This is a retrospective study of 12 CFHs located on fingers in a tertiary hospital in Korea. All case slides were retrieved from saved files. Results: Ages of the CHF of the finger affected individuals ranged from 9 to 48 years with a male-to-female ratio of 1.4:1. Picker's nodule or wart was the most common clinical diagnosis. In only 2 out of the 12 cases was the pre-biopsy diagnosis of CFH ventured. Fibrocollagenous type was the most common histological type. Majority of the cases were mitotically inactive, exhibiting only 0–1 mitoses per high-power field and there was no recurrence. Tumor cells were uniformly CD34 negative. Conclusion: Because CFH can resemble malignancies including dermatofibrosarcoma protuberans, a lack of familiarity with the occurrence of CFH of the finger may lead to more aggressive treatment. Dermatologists should include CFH in their differential diagnosis of circumscribed nodules on the fingers to ensure proper management.
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Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Presbyterian Medical Center, Jeonju, South Korea
| | - Sang-Woo Park
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, South Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, South Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, South Korea
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Nam KH, Jung ES, Park J, Yun SK. A clinical and etiologic study of herpes zoster multiplex. J Am Acad Dermatol 2020; 85:1010-1011. [PMID: 33065171 DOI: 10.1016/j.jaad.2020.10.011] [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: 05/27/2020] [Revised: 09/28/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Presbyterian Medical Center, Jeonju, South Korea
| | - Eui-Sung Jung
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea; Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, South Korea.
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Nam KH, Park SW, Kwak HB, Jung ES, Lee SK, Kim DH, Yun SK. Syringoma Localized to the Umbilicus. Ann Dermatol 2020; 32:434-436. [PMID: 33911782 PMCID: PMC7992583 DOI: 10.5021/ad.2020.32.5.434] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/13/2019] [Accepted: 11/06/2019] [Indexed: 11/08/2022] Open
Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Presbyterian Medical Center, Jeonju, Korea
| | - Sang-Woo Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Hyun-Bin Kwak
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Eui-Sung Jung
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Sang-Kyung Lee
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea
| | - Do-Hyeon Kim
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Korea.,Research Institute of Clinical Medicine of Jeonbuk National University, Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
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Park SH, Nam KH, Ho YH. Case of a Male Newborn with Incontinentia Pigmenti Initially Misdiagnosed as a Recurrent Skin Infection. Neonatal Med 2020. [DOI: 10.5385/nm.2020.27.3.141] [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: 11/01/2022] Open
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Kwak HB, Park J, Kim HU, Nam KH, Yun SK. Cutaneous Carcinosarcoma: a Clinicopathologic and Immunohistochemical Analysis of 11 Korean Cases. J Korean Med Sci 2019; 34:e5. [PMID: 30618513 PMCID: PMC6318441 DOI: 10.3346/jkms.2019.34.e5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 10/10/2018] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Cutaneous carcinosarcoma is a rare biphasic tumor comprising malignant epithelial and heterologous mesenchymal elements. Data on the clinical and histopathologic characteristics of this tumor in Asian populations are not available. The purpose of this study was to investigate the clinicopathologic and immunohistochemical features of cutaneous carcinosarcoma in the Korean population. METHODS We retrospectively reviewed the records of 11 patients with cutaneous carcinosarcoma who were diagnosed from 2006 to 2016. RESULTS The mean patient age at diagnosis was 71.5 years (range, 43-96 years) and there was a men predilection. The most common site of cutaneous carcinosarcoma was the head and neck (8/11, 72.7%). Histopathologically, most tumors showed a characteristic morphology consisting of two types of tumor cells, varied differentiated epithelial cells (such as basal or squamous cells) and spindle cells with transition zones between the two components. These two cell types also demonstrated variable immunohistochemical characteristics. CONCLUSION Although the number of cases in this study was limited, our results provide valuable insight into the clinical and histopathologic characteristics of cutaneous carcinosarcoma in the Korean population.
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Affiliation(s)
- Hyun-Bin Kwak
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
| | - Jin Park
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Han-Uk Kim
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Presbyterian Medical Center, Jeonju, Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
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Kim H, Lee M, Cha MU, Nam KH, An SY, Park S, Jhee JH, Yun HR, Kee YK, Park JT, Yoo TH, Kang SW, Han SH. Microscopic hematuria is a risk factor of incident chronic kidney disease in the Korean general population: a community-based prospective cohort study. QJM 2018; 111:389-397. [PMID: 29554373 DOI: 10.1093/qjmed/hcy054] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Although asymptomatic microscopic hematuria (MH) is a common finding in clinical practice, its long-term outcome remains unknown. AIM This study evaluated the clinical implication of MH in the general population using a large-scale long-term longitudinal cohort database. METHODS This study included 8719 participants from the Korean Genome and Epidemiology Study between 2001 and 2014. MH was defined as ≥5 red blood cells per high-power field in random urinalysis without evidence of pyuria. The primary study outcome measure was incident chronic kidney disease (CKD), defined as estimated glomerular filtration rate <60 ml min-1⋅1.73⋅m-2. RESULTS During a median follow-up of 11.7 years, CKD occurred in 677 (7.8%) subjects. In Cox regression after adjustment for multiple confounders, subjects with MH had a significantly higher risk of incident CKD than those without [hazard ratio (HR) 1.45, 95% confidence interval (CI) 1.12-1.87; P = 0.005]. Isolated MH without proteinuria was also a risk factor of incident CKD (HR 1.37, 95% CI 1.04-1.79; P = 0.023) and the risk was further increased in MH with concomitant proteinuria (HR 5.41, 95% CI 2.54-11.49; P < 0.001). In propensity score matching analysis after excluding subjects with proteinuria, multi-variable stratified Cox regression analysis revealed that subjects with isolated MH had a significantly higher risk of incident CKD than those without (HR 1.83, 95% CI 1.14-2.94; P = 0.012). CONCLUSION The presence of MH is associated with an increased risk of incident CKD in the general population. Therefore, attentive follow-up is warranted in persons with MH for early detection of CKD.
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Affiliation(s)
- H Kim
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
- Division of Nephrology, Soonchunhyang University Hospital, Seoul, Korea
| | - M Lee
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - M-U Cha
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - K H Nam
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S Y An
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S Park
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - J H Jhee
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - H-R Yun
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - Y K Kee
- Department of Internal Medicine, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J T Park
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - T-H Yoo
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S-W Kang
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
| | - S H Han
- Department of Internal Medicine, College of Medicine, Institute of Kidney Disease Research, Yonsei University, Seoul, Korea
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Lim SM, Chang H, Yoon MJ, Hong YK, Kim H, Chung WY, Park CS, Nam KH, Kang SW, Kim MK, Kim SB, Lee SH, Kim HG, Na II, Kim YS, Choi MY, Kim JG, Park KU, Yun HJ, Kim JH, Cho BC. A multicenter, phase II trial of everolimus in locally advanced or metastatic thyroid cancer of all histologic subtypes. Ann Oncol 2013; 24:3089-94. [PMID: 24050953 DOI: 10.1093/annonc/mdt379] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- S M Lim
- Department of Internal Medicine, Division of Medical Oncology, Yonsei University College of Medicine, Seoul
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Affiliation(s)
- Yong-Sun Cho
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
| | - Joo-Ik Kim
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
| | - Ki-Hun Song
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
| | - Kyung-Hwa Nam
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
| | - Jin Park
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
- Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju South Korea
| | - Seok-Kweon Yun
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
- Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju South Korea
| | - Han-Uk Kim
- Department of Dermatology; Chonbuk National University Medical School; Jeonju South Korea
- Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju South Korea
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Affiliation(s)
- Yong-Sun Cho
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
| | - Jin Park
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
| | - Ju-Ik Kim
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
| | - Kyung-Hwa Nam
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
| | - Seok-Kweon Yun
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
| | - Han-Uk Kim
- Department of Dermatology; Research Institute of Clinical Medicine; Chonbuk National University Medical School; Jeonju Korea
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Roh SG, Park J, Song KH, Nam KH, Yun SK, Kim HU. Clinical and histopathological characteristics of extra-facial basal cell carcinoma: analysis of 35 patients at the Chonbuk National University Hospital in Korea. Australas J Dermatol 2013; 55:e65-8. [PMID: 23574342 DOI: 10.1111/ajd.12045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 05/16/2012] [Accepted: 02/05/2013] [Indexed: 01/13/2023]
Abstract
Basal cell carcinoma (BCC) primarily develops in the head and neck region, with 74-83 per cent of BCC occurring in this region. Unfortunately, most published studies on BCC were conducted in Caucasian populations, and analytic data on extra-facial BCC in Asian and Korean patients, in particular, are not readily available. Here, we report on a retrospective analysis of extra-facial BCC in Korean patients. Thirty-five patients (16 men, 19 women) diagnosed with extra-facial BCC at Chonbuk National University Hospital between January 1981 and December 2008 were evaluated. Their average age was 62.3 years and most of the patients (11 of 35, 31%) were in their fifties. The relative tumour density (RTD) was the highest in the genitalia (0.769), followed by the axilla (0.481). Other regions such as the trunk, buttocks and upper and lower extremities exhibited a much lower RTD (average: 0.1). Histopathological examinations showed that 16 tumours were nodular (46%), eight were superficial (23%) and seven were mixed (20%). Additionally, potential predisposing factors were identified in seven cases. In five patients the use of Asian medicine, including acupuncture and herbal medication, was ascertained. To the best of our knowledge, the present study is the first to analyse the clinical and histopathological characteristics of extra-facial BCC in Korean patients. Our results indicate that the incidence of extra-facial BCC is higher in the axilla and genitalia than at other locations, although these sites are frequently overlooked during routine skin examinations.
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Affiliation(s)
- Si-Gyun Roh
- Department of Plastic Surgery, Chonbuk National University Medical School, Jeonju, Korea
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Margarone D, Klimo O, Kim IJ, Prokůpek J, Limpouch J, Jeong TM, Mocek T, Pšikal J, Kim HT, Proška J, Nam KH, Stolcová L, Choi IW, Lee SK, Sung JH, Yu TJ, Korn G. Laser-driven proton acceleration enhancement by nanostructured foils. Phys Rev Lett 2012; 109:234801. [PMID: 23368211 DOI: 10.1103/physrevlett.109.234801] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Indexed: 06/01/2023]
Abstract
Nanostructured thin plastic foils have been used to enhance the mechanism of laser-driven proton beam acceleration. In particular, the presence of a monolayer of polystyrene nanospheres on the target front side has drastically enhanced the absorption of the incident 100 TW laser beam, leading to a consequent increase in the maximum proton energy and beam charge. The cutoff energy increased by about 60% for the optimal spheres' diameter of 535 nm in comparison to the planar foil. The total number of protons with energies higher than 1 MeV was increased approximately 5 times. To our knowledge this is the first experimental demonstration of such advanced target geometry. Experimental results are interpreted and discussed by means of 2(1/2)-dimensional particle-in-cell simulations.
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Affiliation(s)
- D Margarone
- Institute of Physics of the ASCR, ELI-Beamlines/HiLASE project, Na Slovance 2, 18221 Prague, Czech Republic
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30
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Choi Y, Nam KH, Lee JB, Lee JY, Ihm CW, Lee SE, Oh SH, Hashimoto T, Kim SC. Retrospective analysis of 12 Korean patients with paraneoplastic pemphigus. J Dermatol 2012. [PMID: 22938021 DOI: 10.1111/j.1346-8138.2012.01655] [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: 01/27/2023]
Abstract
Paraneoplastic pemphigus (PNP) is a rare, life-threatening, autoimmune, mucocutaneous blistering disease associated with neoplasia. Both humoral and cellular immunity are involved in the pathogenesis of PNP. Characteristically, PNP has a diverse spectrum of clinical and immunopathological features. We retrospectively analyzed 12 Korean patients with PNP who were diagnosed between 1993 and 2011. We performed analysis of the clinical features, clinical outcomes, underlying neoplasia, histological features and laboratory findings. All of the patients except one had severe mucosal involvement. Two patients had only mucosal lesions but no cutaneous involvement was observed. Erythema multiforme or lichen planus-like eruptions rather than bullous lesions were more commonly observed skin rashes. The most common histological features were interface dermatitis and apoptotic keratinocytes. There were associated hematological-related neoplasms in 11 patients, with Castleman's disease (n = 4) as the most frequent. Twelve patients were followed for 5-148 months (mean, 43.0). The prognosis depended on the nature of the underlying neoplasm. Six patients died due to respiratory failure (n = 3), postoperative septicemia (n = 1), lymphoma (n = 1) and sarcomatosis (n = 1). The 2-year survival rate was 50.0%, and the median survival period after diagnosis was 21.0 months. Immunoblotting was performed in 12 patients and autoantibodies to plakins were detected in 11 patients. The results of this study demonstrated the clinical, histological and immunological diversity of PNP. Widely accepted diagnostic criteria that account for the diversity of PNP are needed.
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Affiliation(s)
- Yuri Choi
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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31
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Choi Y, Nam KH, Lee JB, Lee JY, Ihm CW, Lee SE, Oh SH, Hashimoto T, Kim SC. Retrospective analysis of 12 Korean patients with paraneoplastic pemphigus. J Dermatol 2012; 39:973-81. [PMID: 22938021 DOI: 10.1111/j.1346-8138.2012.01655.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 07/03/2012] [Indexed: 12/13/2022]
Abstract
Paraneoplastic pemphigus (PNP) is a rare, life-threatening, autoimmune, mucocutaneous blistering disease associated with neoplasia. Both humoral and cellular immunity are involved in the pathogenesis of PNP. Characteristically, PNP has a diverse spectrum of clinical and immunopathological features. We retrospectively analyzed 12 Korean patients with PNP who were diagnosed between 1993 and 2011. We performed analysis of the clinical features, clinical outcomes, underlying neoplasia, histological features and laboratory findings. All of the patients except one had severe mucosal involvement. Two patients had only mucosal lesions but no cutaneous involvement was observed. Erythema multiforme or lichen planus-like eruptions rather than bullous lesions were more commonly observed skin rashes. The most common histological features were interface dermatitis and apoptotic keratinocytes. There were associated hematological-related neoplasms in 11 patients, with Castleman's disease (n = 4) as the most frequent. Twelve patients were followed for 5-148 months (mean, 43.0). The prognosis depended on the nature of the underlying neoplasm. Six patients died due to respiratory failure (n = 3), postoperative septicemia (n = 1), lymphoma (n = 1) and sarcomatosis (n = 1). The 2-year survival rate was 50.0%, and the median survival period after diagnosis was 21.0 months. Immunoblotting was performed in 12 patients and autoantibodies to plakins were detected in 11 patients. The results of this study demonstrated the clinical, histological and immunological diversity of PNP. Widely accepted diagnostic criteria that account for the diversity of PNP are needed.
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Affiliation(s)
- Yuri Choi
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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Cha HJ, Choi IW, Kim HT, Kim IJ, Nam KH, Jeong TM, Lee J. Absolute energy calibration for relativistic electron beams with pointing instability from a laser-plasma accelerator. Rev Sci Instrum 2012; 83:063301. [PMID: 22755616 DOI: 10.1063/1.4725530] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The pointing instability of energetic electron beams generated from a laser-driven accelerator can cause a serious error in measuring the electron spectrum with a magnetic spectrometer. In order to determine a correct electron spectrum, the pointing angle of an electron beam incident on the spectrometer should be exactly defined. Here, we present a method for absolutely calibrating the electron spectrum by monitoring the pointing angle using a scintillating screen installed in front of a permanent dipole magnet. The ambiguous electron energy due to the pointing instability is corrected by the numerical and analytical calculations based on the relativistic equation of electron motion. It is also possible to estimate the energy spread of the electron beam and determine the energy resolution of the spectrometer using the beam divergence angle that is simultaneously measured on the screen. The calibration method with direct measurement of the spatial profile of an incident electron beam has a simple experimental layout and presents the full range of spatial and spectral information of the electron beams with energies of multi-hundred MeV level, despite the limited energy resolution of the simple electron spectrometer.
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Affiliation(s)
- H J Cha
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712, South Korea
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Kim WW, Lee JJ, Nam KH, Jung JH, Chae YS, Yang JD, Lee YH, Park HY. P2-16-15: Oncological Safety and Survival Rate According to Reconstructive Surgery in Advanced Breast Cancer after Neoadjuvant Chemotherapy. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-16-15] [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: 11/16/2022]
Abstract
Abstract
Purpose: Oncoplastic surgery has received attention according as the incidence of breast cancer is rising and quality of life including cosmetic result after surgery is regarded as important. The aim of this study is to compare combined reconstructive surgery with standard surgery regarding to oncological safety and survival rate in advanced breast cancer after neoadjuvant chemotherapy (CTx).
Method: Thirty-seven patients underwent neoadjuvant CTx and surgery with advanced breast cancer were analyzed from September 2007 to March 2010. Group A (n=12) received combined reconstructive surgery, group B (n=25) had standard surgery.
Results: There were no differences in age, size, metastatic LN, stage, ER/PR/Her-2 status, recurrence, metastasis and death between group A and B. Patients with good response in neoadjuvant chemotherapy (26 cases (72.9%)) had CTx-operation-radiation therapy (RTx), cases with poor response (10 cases (27.1%)) underwent CTx-RTx-operation. There was significant difference in order of treatment, eight patients among group A(66.6%) had CTx-RTx-operation, 22 cases in group B(88.0%) received CTx-operation-RTx (p=0.006). Mean follow up period was 22 months, 2 patients (5.2%) experienced local recurrences, 11 cases (34.3%) diagnosed with distant metastasis, and 4 patients (10.5%) expired with breast cancer.
Conclusion: Advanced breast cancer with poorly responded in neoadjuvant CTx could be actively treated with sequential CTx-RTx-reconstructive surgery. Combined reconstructive surgery was oncologically safe operation in advanced breast cancer.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-16-15.
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Affiliation(s)
- WW Kim
- 1Kyungpook National University; Hyosung Hospital
| | - JJ Lee
- 1Kyungpook National University; Hyosung Hospital
| | - KH Nam
- 1Kyungpook National University; Hyosung Hospital
| | - JH Jung
- 1Kyungpook National University; Hyosung Hospital
| | - YS Chae
- 1Kyungpook National University; Hyosung Hospital
| | - JD Yang
- 1Kyungpook National University; Hyosung Hospital
| | - YH Lee
- 1Kyungpook National University; Hyosung Hospital
| | - HY Park
- 1Kyungpook National University; Hyosung Hospital
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35
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Lee SY, Kwon HC, Cho YS, Nam KH, Ihm CW, Kim JS. The three dimensional conformal radiotherapy for hyperkeratotic plantar mycosis fungoides. Ann Dermatol 2011; 23 Suppl 1:S57-60. [PMID: 22028574 PMCID: PMC3199424 DOI: 10.5021/ad.2011.23.s1.s57] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 09/10/2010] [Accepted: 09/10/2010] [Indexed: 11/09/2022] Open
Abstract
The localized early-stage of Mycosis fungoides (MF) (stage IA-IIA) is usually treated with topical agents, such as nitrogen mustard, steroids, and phototherapy (UVB/PUVA) as first line therapy; response to these initial treatments is usually good. However, hyperkeratotic plantar lesions are clinically rare and have decreased responsiveness to topical agents. For such cases, physicians may consider local radiotherapy. Here, a case of an 18-year-old Korean woman who was treated with three-dimensional conformal radiotherapy (3D-CRT) for hyperkeratotic plantar lesions that were refractory to UVA-1, methotrexate, and topical steroids is reported. Complete remission was attained after radiotherapy. During the one-year follow-up period, there has been no evidence of disease recurrence and no chronic complications have been observed.
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Affiliation(s)
- Sun Young Lee
- Department of Radiation Oncology, Chonbuk National University Medical School, Jeonju, Korea
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36
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Lee KE, Kang HY, Lee SK, Yoo SH, Lee JC, Hwang YH, Nam KH, Kim JS, Park JC, Kim JW. Novel dentin phosphoprotein frameshift mutations in dentinogenesis imperfecta type II. Clin Genet 2011; 79:378-84. [PMID: 20618350 DOI: 10.1111/j.1399-0004.2010.01483.x] [Citation(s) in RCA: 16] [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] [Indexed: 11/26/2022]
Abstract
The dentin sialophosphoprotein (DSPP) gene encodes the most abundant non-collagenous protein in tooth dentin and DSPP protein is cleaved into several segments including the highly phosphorylated dentin phosphoprotein (DPP). Mutations in the DSPP gene have been solely related to non-syndromic form of hereditary dentin defects. We recruited three Korean families with dentinogenesis imperfecta (DGI) type II and sequenced the exons and exon-intron boundaries of the DSPP gene based on the candidate gene approach. Direct sequencing of PCR products and allele-specific cloning of the highly repetitive exon 5 revealed novel single base pair (bp) deletional mutations (c.2688delT and c.3560delG) introducing hydrophobic amino acids in the hydrophilic repeat domain of the DPP coding region. All affected members of the three families showed exceptionally rapid pulp chambers obliteration, even before tooth eruption. Individuals with the c.3560delG mutation showed only mild, yellowish tooth discoloration, in contrast to the affected individuals from two families with c.2688delT mutation. We believe that these results will help us to understand the molecular pathogenesis of DGI type II as well as the normal process of dentin biomineralization.
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Affiliation(s)
- K-E Lee
- Department of Cell and Developmental Biology & Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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37
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Nam KH, Kwon JY, Son GH, Cho NH, Park YW, Kim YH. Prenatally diagnosed left ventricular diverticulum with thoracoabdominal wall defect: a case and review of the literature. J Perinatol 2010; 30:760-2. [PMID: 20981042 DOI: 10.1038/jp.2010.106] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K H Nam
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
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38
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Lee SK, Seymen F, Lee KE, Kang HY, Yildirim M, Tuna EB, Gencay K, Hwang YH, Nam KH, De La Garza RJ, Hu JCC, Simmer JP, Kim JW. Novel WDR72 mutation and cytoplasmic localization. J Dent Res 2010; 89:1378-82. [PMID: 20938048 DOI: 10.1177/0022034510382117] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The proven candidate genes for amelogenesis imperfecta (AI) are AMELX, ENAM, MMP20, KLK4, FAM83H, and WDR72. We performed mutation analyses on seven families with hypomaturation AI. A novel WDR72 dinucleotide deletion mutation (g.57,426_57,427delAT; c.1467_ 1468delAT; p.V491fsX497) was identified in both alleles of probands from Mexico and Turkey. Haplotype analyses showed that the mutations arose independently in the two families. The disease perfectly segregated with the genotype. Only persons with both copies of the mutant allele were affected. Their hypomineralized enamel suffered attrition and orange-brown staining following eruption. Expression of WDR72 fused to green fluorescent protein showed a cytoplasmic localization exclusively and was absent from the nucleus. We conclude that WDR72 is a cytoplasmic protein that is critical for dental enamel formation.
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Affiliation(s)
- S-K Lee
- Department of Cell and Developmental Biology, Seoul National University, 275-1 Yongon-dong, Chongno-gu, Seoul 110-768, Korea
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39
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Nam KH, Park J, Hong JS, Roh SG, Kim DS, Yun SK. Mycosis fungoides as an ichthyosiform eruption. Ann Dermatol 2010; 21:182-4. [PMID: 20523782 DOI: 10.5021/ad.2009.21.2.182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Accepted: 10/09/2008] [Indexed: 11/08/2022] Open
Abstract
Ichthyosiform eruption as a specific manifestation of mycosis fungoides is very rare and only a few such cases have currently been reported in the medical literature. A 63-year-old Korean man presented with a 4-year history of a pruritic ichthyotic eruption. There was no personal or family history of ichthyosis or atopy. The ichthyosiform skin changes involved the abdomen, arms, thighs and shins. The face, palms and soles were spared. There was no peripheral lymphadenopathy or organomegaly. The typical lesions of mycosis fungoides were not present. The results of the routine investigations were normal or negative. A skin biopsy specimen revealed the findings of early mycosis fungoides. He was successfully treated with photochemotherapy.
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Affiliation(s)
- Kyung-Hwa Nam
- Department of Dermatology, Chonbuk National University Medical School, Jeonju, Korea
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Lee J, Jeong JJ, Lee YS, Nam KH, Chang HS, Chung WY, Soh EY, Kim YS, Park CS. Incidence and clinical behavior of papillary thyroid carcinoma in renal allograft recipients: a single center experience. Transplant Proc 2009; 40:3751-4. [PMID: 19100481 DOI: 10.1016/j.transproceed.2008.07.127] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2008] [Accepted: 07/10/2008] [Indexed: 10/21/2022]
Abstract
The chronic use of immunosuppressive therapy in transplant recipients increases the long-term risk for carcinoma. However, there is insufficient knowledge regarding the incidence and biological behavior of papillary thyroid carcinomas (PTC) in renal allograft recipients. In the present study we examined the incidence and biological behavior of PTCs among 1739 patients transplanted between January 1986 and December 1999 who had been followed for a mean period of 137 months (range, 84-238 months). During the follow-up, 129 (7.4%) recipients were identified to display posttransplantation malignancies, including 12 (0.7%) with PTCs. The 6 male and 6 female patients had a mean age of 41 years (range, 23-57 years). Nine cases (incidentalomas) were diagnosed based on ultrasonographic (US) screening. Eight of those 9 were TNM stage I, 2 of the 3 clinical carcinomas were TNM stage IVa. During a mean follow-up of 94 months (range, 18-159 months), 2 (16.7%) PTC patients developed locoregional recurrence, but no patients showed distant metastases. These data showed that recipients had a higher incidence of PTC compared with the general Korean population (0.7% vs 0.02%). Posttransplantation PTC tended to show no difference in gender distribution, and was often associated with aggressive lymphatic metastasis. However, most incidentalomas showed favorable treatment outcomes. In conclusion, routine surveillance of the thyroid gland using US screening is recommended to ensure early detection, treatment, and favorable prognosis of PTC.
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Affiliation(s)
- J Lee
- Department of Endocrine Surgery, Ajou University Medical Center, Seoul, Korea
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Ahn WS, Bae SM, Lee JM, Namkoong SE, Yoo JY, Seo YS, Nam SL, Cho YL, Nam KH, Kim CK, Kim YW. Anti-cancer effect of adenovirus p53 on human cervical cancer cell growth in vitro and in vivo. Int J Gynecol Cancer 2004; 14:322-32. [PMID: 15086733 DOI: 10.1111/j.1048-891x.2004.014217.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/29/2022] Open
Abstract
To evaluate anti-tumor effects of recombinant adenovirus p53, time-course p53, E6 expression, and cell growth inhibition were investigated in vitro and in vivo using cervical cancer cell lines such as CaSki, SiHa, HeLa, HeLaS3, C33A, and HT3. The cell growth inhibition was studied via cell count assay, MTT assay and neutral red assay. After transfecting AdCMVp53 into SiHa cells-xenografted nude mice, the transduction efficiency and anti-tumor effect were investigated for a month. The results showed that adenoviral p53 expression induced significant growth suppression on the cancer cells, in which E6 transcript was strongly repressed, and that the expression of p53 and E6 were remarkably dependent on each cell type. The transduction efficiency was highly maintained in vivo as well as in vitro, and the size of tumor was remarkably decreased in comparison with AdCMVLacZ control. The results suggest that the adenovirus-mediated p53 gene transfection was done very effectively in vitro and in vivo experiment, and the cell growth was suppressed via p53-dependent apoptotic cell death, and that the anti-tumor effect could be related to E6 and p53 expression pattern.
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Affiliation(s)
- W S Ahn
- Department of Obstetrics and Gynecology, Catholic Research Institutes of Medical Science, Seoul, Korea
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Nagao Y, Iimori H, Nam KH, Sano S, Shiro M. Synthesis and antibacterial activity of new 1beta-methylcarbapenems having the potential for intramolecular nonbonded S...O interactions. Chem Pharm Bull (Tokyo) 2001; 49:1660-1. [PMID: 11767095 DOI: 10.1248/cpb.49.1660] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/22/2022]
Abstract
Mercaptoacetyliminothiadiazoline derivatives (19, 20) useful for the pendant moiety of 1beta-methylcarbapenem antibiotics were efficiently synthesized. Acetyl derivative (18) of 20 was submitted to X-ray analysis, and a significant nonbonded S...O close contact was recognized in the crystallographic structure. New 1beta-methylcarbapenems (5, 6) were synthesized by exploiting 19 and 20, and exhibited considerable antibacterial activities in vitro.
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Affiliation(s)
- Y Nagao
- Faculty of Pharmaceutical Sciences, The University of Tokushima, Japan.
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Lewinsohn E, Schalechet F, Wilkinson J, Matsui K, Tadmor Y, Nam KH, Amar O, Lastochkin E, Larkov O, Ravid U, Hiatt W, Gepstein S, Pichersky E. Enhanced levels of the aroma and flavor compound S-linalool by metabolic engineering of the terpenoid pathway in tomato fruits. Plant Physiol 2001; 127:1256-1265. [PMID: 11706204 DOI: 10.1104/pp.010293] [Citation(s) in RCA: 154] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aromas of fruits, vegetables, and flowers are mixtures of volatile metabolites, often present in parts per billion levels or less. We show here that tomato (Lycopersicon esculentum Mill.) plants transgenic for a heterologous Clarkia breweri S-linalool synthase (LIS) gene, under the control of the tomato late-ripening-specific E8 promoter, synthesize and accumulate S-linalool and 8-hydroxylinalool in ripening fruits. Apart from the difference in volatiles, no other phenotypic alterations were noted, including the levels of other terpenoids such as gamma- and alpha-tocopherols, lycopene, beta-carotene, and lutein. Our studies indicate that it is possible to enhance the levels of monoterpenes in ripening fruits by metabolic engineering.
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Affiliation(s)
- E Lewinsohn
- Newe Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay 30095, Israel.
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Li J, Nam KH, Vafeados D, Chory J. BIN2, a new brassinosteroid-insensitive locus in Arabidopsis. Plant Physiol 2001; 127:14-22. [PMID: 11553730 PMCID: PMC117958 DOI: 10.1104/pp.127.1.14] [Citation(s) in RCA: 315] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2001] [Revised: 04/16/2001] [Accepted: 06/02/2001] [Indexed: 05/18/2023]
Abstract
Brassinosteroids (BRs) play important roles throughout plant development. Although many genes have been identified that are involved in BR biosynthesis, genetic approaches in Arabidopsis have led to the identification of only one gene, BRI1, that encodes a membrane receptor for BRs. To expand our knowledge of the molecular mechanism(s) of plant steroid signaling, we analyzed many dwarf and semidwarf mutants collected from our previous genetic screens and identified a semidwarf mutant that showed little response to exogenous BR treatments. Genetic analysis of the bin2 (BR-INSENSITIVE 2) mutant indicated that the BR-insensitive dwarf phenotype was due to a semidominant mutation in the BIN2 gene that mapped to the middle of chromosome IV between the markers CH42 and AG. A direct screening for similar semidwarf mutants resulted in the identification of a second allele of the BIN2 gene. Despite some novel phenotypes observed with the bin2/+ mutants, the homozygous bin2 mutants were almost identical to the well-characterized bri1 mutants that are defective in BR perception. In addition to the BR-insensitive dwarf phenotype, bin2 mutants exhibited BR insensitivity when assayed for root growth inhibition and feedback inhibition of CPD gene expression. Furthermore, bin2 mutants displayed an abscisic acid-hypersensitive phenotype that is shared by the bri1 and BR-deficient mutants. A gene dosage experiment using triploid plants suggested that the bin2 phenotypes were likely caused by either neomorphic or hypermorphic gain-of-function mutations in the BIN2 gene. Thus, the two bin2 mutations define a novel genetic locus whose gene product might play a role in BR signaling.
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Affiliation(s)
- J Li
- Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048, USA.
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Abstract
Syringin was found to possess immunomodulatory activity by which it inhibited the in-vitro immunohaemolysis of antibody-coated sheep erythrocytes by guinea-pig serum through suppression of C3-convertase of the classical complement. In this study, we examined its in-vitro and in-vivo activity on tumour necrosis factor (TNF)-alpha and nitric oxide (NO) production, CD4+ T cell and CD8+ cytotoxic T cell (CTLL-2) proliferation, and croton oil-, arachidonic acid- and fluorescein-isothiocynate (FITC)-induced mouse ear oedema model. Syringin significantly inhibited both TNF-alpha production from lipopolysaccharide (LPS)-stimulated RAW264.7 cells and CD8+ T cell (CTLL-2) proliferation in a dose-dependent manner, whereas neither NO production nor CD4+ T cell proliferation were blocked even by high concentrations of syringin. In the invivo experiments, syringin also significantly suppressed FITC-induced ear oedema in mice but not the ear oedema induced by croton or arachidonic acid. These results suggest that syringin may be implicated as an immunomodulator having an anti-allergic effect rather than an anti-inflammatory effect. The anti-allergic effect of syringin seems to be due, in part, to inhibition of TNF-alpha production and cytotoxic T cell proliferation.
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Affiliation(s)
- J Y Cho
- R & D Center, Daewoong Pharmaceutical Co. Ltd., Korea.
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46
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Abstract
Cynomolgus monkeys were divided into two groups in terms of the reactivity of their lymphocytes with the FN18 monoclonal antibody, which is directed to the CD3 of rhesus monkeys. It was shown that 24 (12.2%) out of 196 monkeys did not have lymphocytes that reacted with the FN18, although T cells from those animals responded well to mitogenic stimulation. We have determined the nucleotide sequences of the CD3delta, CD3gamma, and CD3epsilon chains and found that two amino acids of the CD3epsilon chain of the FN18 non-reactive monkeys were different when compared with the FN18 reactive monkeys. Our results indicated that the CD3epsilon molecule of cynomolgus monkeys is polymorphic at the epitope level, which is recognized by the FN18 monoclonal antibody.
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Affiliation(s)
- A Uda
- Tsukuba Primate Center for Medical Science, National Institute of Infectious Diseases, Ibaraki, Japan
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Abstract
We observed that the transglutaminase (tTGase) level and activity increased in aged rats and senescent primary fibroblasts, suggesting that the tTGase-mediated macromolecule crosslinking may play a mechanistic role during aging. Although preliminary, our in vitro experiment suggests that the target of tTGase is core histones: H2A:H2B and H3:H4 are specifically crosslinked by tTGase. On the basis of these data, we postulate that the changes of DNA metabolism in association with cellular aging may be ascribed primarily to the crosslinking of core histone subunits. Further speculation awaits substantive data showing increased histone crosslinking in senescent cells and also what crosslinked histones in various DNA metabolisms may imply. At the moment, present data are sufficient to propose that tTGase is a senescence marker and it may be primarily responsible for the phenotypes associated with cellular senescence.
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Affiliation(s)
- J H Kim
- Department of Biochemistry, Aging and Physical Culture Research Institute, Seoul National University College of Medicine, Korea.
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Gang DR, Wang J, Dudareva N, Nam KH, Simon JE, Lewinsohn E, Pichersky E. An investigation of the storage and biosynthesis of phenylpropenes in sweet basil. Plant Physiol 2001; 125:539-55. [PMID: 11161012 PMCID: PMC64856 DOI: 10.1104/pp.125.2.539] [Citation(s) in RCA: 241] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2000] [Accepted: 10/02/2000] [Indexed: 05/17/2023]
Abstract
Plants that contain high concentrations of the defense compounds of the phenylpropene class (eugenol, chavicol, and their derivatives) have been recognized since antiquity as important spices for human consumption (e.g. cloves) and have high economic value. Our understanding of the biosynthetic pathway that produces these compounds in the plant, however, has remained incomplete. Several lines of basil (Ocimum basilicum) produce volatile oils that contain essentially only one or two specific phenylpropene compounds. Like other members of the Lamiaceae, basil leaves possess on their surface two types of glandular trichomes, termed peltate and capitate glands. We demonstrate here that the volatile oil constituents eugenol and methylchavicol accumulate, respectively, in the peltate glands of basil lines SW (which produces essentially only eugenol) and EMX-1 (which produces essentially only methylchavicol). Assays for putative enzymes in the biosynthetic pathway leading to these phenylpropenes localized many of the corresponding enzyme activities almost exclusively to the peltate glands in leaves actively producing volatile oil. An analysis of an expressed sequence tag database from leaf peltate glands revealed that known genes for the phenylpropanoid pathway are expressed at very high levels in these structures, accounting for 13% of the total expressed sequence tags. An additional 14% of cDNAs encoded enzymes for the biosynthesis of S-adenosyl-methionine, an important substrate in the synthesis of many phenylpropenes. Thus, the peltate glands of basil appear to be highly specialized structures for the synthesis and storage of phenylpropenes, and serve as an excellent model system to study phenylpropene biosynthesis.
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Affiliation(s)
- D R Gang
- Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048, USA.
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Nam KH. Experimental autoimmune encephalomyelitis in cynomolgus monkeys. J Vet Sci 2000; 1:127-31. [PMID: 14614308] [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: 04/27/2023] Open
Abstract
Experimental autoimmune encephalomyelitis was induced in macaques. T cell clones infiltrated into the brain lesion area were compared with those in blood. Intradermal immunization of macaques with brain white matter derived from healthy macaque in combination with pertussis toxin, induced neurological symptoms in two macaques. One died on day 25 after immunization, whereas the other survived. Gross examination of the brain from the dead macaque, showed clear hemorrhagic lesions in the white matter. Hematological analysis showed that drastic T cell response was induced in macaques immunized with white matter, but not in control macaques. Flow cytometric analysis of blood cells from the affected macaques demonstrated an increase of CD4 and CD8 T cell populations expressing the CD69 early activation marker. Single strand conformation polymorphism (SSCP) analysis of T cell receptor beta chain showed T cell clones infiltrated into the brain lesion, which were different from those found in the peripheral blood of the same monkey. The present paper shows that SSCP analysis of TCR is useful in studying clonality of T cells infiltrating into the brain tissue of macaque with EAE.
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Affiliation(s)
- K H Nam
- Department of Internal Medicine, University of Iowa, Iowa City, IA, 52242 USA.
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Nam KH, Illés Z, Terao K, Yoshikawa Y, Yamamura T. Characterization of expanded T cell clones in healthy macaques: ontogeny, distribution and stability. Dev Comp Immunol 2000; 24:703-715. [PMID: 10831804 DOI: 10.1016/s0145-305x(00)00004-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Peripheral expanded T cell clones have been discussed mainly in relation to certain diseases or immune function in humans and mice. There is little information on their ontogeny, stability and distribution among T cell subsets as well as major lymphoid organs. We applied reverse transcription-polymerase chain reaction (RT-PCR) with family specific primers for monkey T cell receptor beta chain V regions and single-strand conformation polymorphism (SSCP) analysis to analyze the expanded T cell clones in cynomolgus monkeys (Macaca fascicularis). A number of expanded T cell clones were detected in the peripheral blood of young and adult monkeys, but few expanded T cell clones were detected in the blood of a fetus and a 2-day-old neonate. The clones in adults were maintained over 3 months. These expanded T cell clones were distributed only in peripheral blood and spleen, but few were found in lymph nodes (axillary, inguinal and intestinal). The number of expanded T cell clones was much greater in CD8 single-positive (CD8sp) T cells than in CD4sp T cells, showing that most of these clones originated in the CD8sp T cell population. Almost all the expanded CD8sp T cell clones belonged to the CD28(-), CD29(hi) and Fas(+) subset. The usage of V beta genes was not skewed in the 24 V beta. Furthermore, higher mRNA signals for effector molecules perforin and IFN-gamma were detected in CD8sp T cell subsets with phenotypes of CD28(-), CD29(hi) and Fas(+), suggesting that the expanded T cells might have developed in relation to T cell activation in the periphery of cynomolgus monkeys.
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Affiliation(s)
- K H Nam
- Tsukuba Primate Center, National Institute of Infectious Diseases, Ibaraki, Japan
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