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Lim Y, Park J, Lim JE, Park M, Koh SK, Lee M, Kim SK, Lee SH, Song KH, Park DG, Kim HY, Jeong BC, Cho D. Evaluating a combination treatment of NK cells and reovirus against bladder cancer cells using an in vitro assay to simulate intravesical therapy. Sci Rep 2024; 14:7390. [PMID: 38548803 PMCID: PMC10979019 DOI: 10.1038/s41598-024-56297-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/05/2024] [Indexed: 04/01/2024] Open
Abstract
Intravesical treatment using either reovirus or natural killer (NK) cells serves as an efficient strategy for the treatment of bladder cancer cells (BCCs); however, corresponding monotherapies have often shown modest cytotoxicity. The potential of a locoregional combination using high-dose reovirus and NK cell therapy in an intravesical approach has not yet been studied. In this study, we evaluated the effectiveness of reoviruses and expanded NK cells (eNK) as potential strategies for the treatment of bladder cancer. The anti-tumor effects of mono-treatment with reovirus type 3 Dearing strain (RC402 and RP116) and in combination with interleukin (IL)-18/-21-pretreated eNK cells were investigated on BCC lines (5637, HT-1376, and 253J-BV) using intravesical therapy to simulate in vitro model. RP116 and IL-18/-21-pretreated eNK cells exhibited effective cytotoxicity against grade 1 carcinoma (5637 cells) when used alone, but not against HT-1376 (grade 2 carcinoma) and 253J-BV cells (derived from a metastatic site). Notably, combining RP116 with IL-18/-21-pretreated eNK cells displayed effective cytotoxicity against both HT-1376 and 253J-BV cells. Our findings underscore the potential of a combination therapy using reoviruses and NK cells as a promising strategy for treating bladder cancer.
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Affiliation(s)
- Yuree Lim
- Department of Biopharmaceutical Convergence, Sungkyunkwan University (SKKU), Suwon, Korea
| | - Jeehun Park
- Department of Molecular Bioscience, College of Biomedical Science, Kangwon National University, Chuncheon, Korea
| | - Joung Eun Lim
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Minji Park
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Seung Kwon Koh
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Mijeong Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Sang-Ki Kim
- Department of Companion & Laboratory Animal Science, Kongju National University, Yesan, Korea
| | - Seung-Hwan Lee
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | - Dong Guk Park
- ViroCure Inc., Seoul, Republic of Korea
- Department of Surgery, School of Medicine, Dankook University, Cheonan, South Korea
| | - Hyun-Young Kim
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-Ro, Gangnam-Gu, Seoul, 06351, Republic of Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea.
| | - Duck Cho
- Department of Biopharmaceutical Convergence, Sungkyunkwan University (SKKU), Suwon, Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea.
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-Ro, Gangnam-Gu, Seoul, 06351, Republic of Korea.
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Kim C, Chon HJ, Lee HJ, Lee WS, Yang H, Kim JH, Kong SJ, Lee YS, Lee SJ, Gansukh E, Song KH, Lee YS, Kang B. Abstract 1914: Orally available oncolytic reovirus, RC402, effectively promotes anti-cancer immunity and synergizes with immune checkpoint blockade in colon cancer. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-1914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Reoviruses are replication-competent and selectively infect and destroy cancer cells. Although the most common route of oncolytic virotherapy is intratumoral or intravenous administration, these routes are often not clinically feasible because of tumor inaccessibility, tumor multiplicity, and systemic toxicities. Here, we developed an orally available oncolytic reovirus, RC402, to elicit potent anti-tumor immune responses without the above mentioned limitations and thereby maximize the efficacy of PD-1 immune checkpoint blockade in colon cancer.
Method: MC38 or CT26 colon cancer-bearing immunocompetent mice were treated with RC402 and/or anti-PD-1 antibody. Tumor growth was monitored after treatment and comprehensively analyzed by flow cytometry and/or multiplex tissue imaging.
Results: RC402 treatment effectively delayed tumor growth regardless of the route of administration (per os as well as intratumorally). In particular, orally administered RC402 was well tolerated without gross toxicity and interacted with intestinal immune cells, eliciting adaptive T cell responses within intestinal lymphoid organs such as Peyer's patch. Most of the RC402 was cleared in the gastrointestinal tract within 10 days of the first treatment, and it was not detectable in the blood stream or major organs after oral administration. However, RC402 selectively induced strong and durable anti-tumor immunity in distant tumor tissues. Oral RC402 monotherapy markedly increased CD8+ cytotoxic T cells and decreased CD4+CD25+Foxp3+ regulatory T cells in distant colon cancers, while there were no significant changes in tumor-associated myeloid cells. Finally, oral RC402 treatment cooperated with anti-PD-1 blockade to further suppress colon cancer growth and augment anti-tumor immunity within the tumor microenvironment, leading to complete regression of tumors and survival benefit of tumor-bearing mice.
Conclusion: Our study demonstrates that orally available oncolytic reovirus, RC402, could induce potent anti-cancer immune responses and effectively suppress colon cancer progression in combination with anti-PD-1 blockade.
Citation Format: Chan Kim, Hong Jae Chon, Hye Jin Lee, Won Suk Lee, Hannah Yang, Jeong Hun Kim, So Jung Kong, Yu Seong Lee, Seung Joon Lee, Enkhtaivan Gansukh, Ki-Hoon Song, Yeon-Sook Lee, Beodeul Kang. Orally available oncolytic reovirus, RC402, effectively promotes anti-cancer immunity and synergizes with immune checkpoint blockade in colon cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 1914.
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Affiliation(s)
- Chan Kim
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Hong Jae Chon
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Hye Jin Lee
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Won Suk Lee
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Hannah Yang
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Jeong Hun Kim
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - So Jung Kong
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Yu Seong Lee
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | - Seung Joon Lee
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
| | | | - Ki-Hoon Song
- 2ViroCure Incorporated, Seoul, Republic of Korea
| | | | - Beodeul Kang
- 1Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-do, Republic of Korea
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Cho YR, Seo JW, Kim HJ, Song KH. A comparison of the efficacy of ablative fractional laser-assisted photodynamic therapy according to the density of the ablative laser channel in the treatment of actinic keratosis: A prospective, randomized, controlled trial. J Am Acad Dermatol 2019; 85:750-752. [PMID: 31669438 DOI: 10.1016/j.jaad.2019.10.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 10/13/2019] [Accepted: 10/17/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Yeo-Rye Cho
- Department of Dermatology, College of Medicine, Dong-A University, Republic of Korea
| | - Jeong-Wan Seo
- Department of Dermatology, College of Medicine, Dong-A University, Republic of Korea
| | - Ho-Jin Kim
- Department of Dermatology, College of Medicine, Dong-A University, Republic of Korea
| | - Ki-Hoon Song
- Department of Dermatology, National Cancer Center, Republic of Korea.
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Seo JW, Kim HJ, Song KH. A comparison of the efficacy of ablative fractional laser–assisted photodynamic therapy according to ablative depth for actinic keratosis: A single-blinded, randomized, comparative, prospective study. J Am Acad Dermatol 2019; 81:636-638. [DOI: 10.1016/j.jaad.2019.01.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 12/05/2018] [Accepted: 01/19/2019] [Indexed: 11/25/2022]
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Nam A, Kim SM, Jeong JW, Song KH, Koo TS, Seo KW. Comparison of body surface area-based and weight-based dosing format for oral prednisolone administration in small and large-breed dogs. Pol J Vet Sci 2019; 20:611-613. [PMID: 29166276 DOI: 10.1515/pjvs-2017-0076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study compared the pharmacokinetics of Prednisolone (PDS) in small- and large breed dogs with a dosing format based on body surface area (BSA) or body weight (BW). The maximum concentration and area under the curve in large-breed dogs orally administered 2 mg/kg PDS were significantly greater than those in small-breed dogs given 2 mg/kg and in large-breed dogs given 40 mg/m2. The higher blood concentrations that result from BW-based dosing of oral PDS in large-breed dogs can be more than required for effect. Meanwhile, BSA dosing at 40 mg/m may be suboptimal. These findings confirm important differences between standard PDS dosing schemes in dogs while highlighting the need to further optimize PDS dosing in large-breed dogs.
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Cho YR, Kim HJ, Seo JW, Kim TH, Song KH, Kim KH. Topical Methyl Aminolevulinate Photodynamic Therapy in Porokeratosis of Mibelli: An Alternative Treatment for a Refractory Disease. Ann Dermatol 2019; 31:341-343. [PMID: 33911603 PMCID: PMC7992740 DOI: 10.5021/ad.2019.31.3.341] [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: 01/26/2018] [Revised: 04/30/2018] [Accepted: 05/04/2018] [Indexed: 11/08/2022] Open
Affiliation(s)
- Yeo-Rye Cho
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ho-Jin Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Jeong-Wan Seo
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Tae-Hoon Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Kim HJ, Song KH. Ablative fractional laser–assisted photodynamic therapy provides superior long-term efficacy compared with standard methyl aminolevulinate photodynamic therapy for lower extremity Bowen disease. J Am Acad Dermatol 2018; 79:860-868. [DOI: 10.1016/j.jaad.2018.05.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 05/01/2018] [Accepted: 05/20/2018] [Indexed: 11/27/2022]
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Kim HJ, Seo JW, Roh MS, Lee JH, Song KH. Clinical features and prognosis of Asian patients with acral lentiginous melanoma who have nodal nevi in their sentinel lymph node biopsy specimen. J Am Acad Dermatol 2018; 79:706-713. [PMID: 29673774 DOI: 10.1016/j.jaad.2018.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 12/08/2017] [Revised: 01/31/2018] [Accepted: 04/04/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND Nodal melanocytic nevi (NNs) encountered during sentinel lymph node biopsy (SLB) for malignant melanoma are usually difficult to distinguish from metastatic melanoma. However, NNs have not been well studied in acral lentiginous melanoma (ALM) in Asian populations. OBJECTIVE To investigate the clinical characteristics and significance of NNs in SLB specimens from patients with ALM. METHODS We retrospectively analyzed 84 patients with ALM who underwent SLB between June 2010 and July 2017. RESULTS Of the 84 patients with ALM, 9 (10.7%) had NNs in their SLB specimens. NNs were significantly more common in SLB specimens than in specimens not obtained by SLB. The presence of pre-existing melanocytic lesions was found to be associated with NNs (P < .001). The 5-year overall survival was significantly higher in patients with ALM with NNs than in patients with a positive SLB result (P = .047). Distant recurrence in patients with ALM with NNs was significantly lower than in patients a positive SLB result (P = .03). LIMITATIONS The small sample size, single-center study design, and retrospective nature of the study were the limitations. CONCLUSION In Asian populations, the prevalence of NNs in ALM is similar to that reported in Europe and the United States. The rates of distant recurrence and overall survival in patients with ALM who have NNs are similar to those of patients who do not have metastatic melanoma.
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Affiliation(s)
- Ho-Jin Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Jeong-Wan Seo
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Mee-Sook Roh
- Department of Pathology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Ji-Hyun Lee
- Department of Internal Medicine, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea.
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Kim HJ, Seo JW, Kim TH, Choi SH, Song KH, Kim KH. Pirfenidone-Induced Photosensitivity in a Patient with Idiopathic Pulmonary Fibrosis. Ann Dermatol 2018; 30:614-616. [PMID: 33911489 PMCID: PMC7992494 DOI: 10.5021/ad.2018.30.5.614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 04/02/2017] [Accepted: 04/25/2017] [Indexed: 12/02/2022] Open
Affiliation(s)
- Ho-Jin Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Jeong-Wan Seo
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Tae-Hoon Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Seung-Hwan Choi
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Seo JW, Ha SM, Song KH. Feasibility of IMP-3 as an Invasiveness Marker for Acral Lentiginous Melanoma. Ann Dermatol 2018; 30:496-499. [PMID: 30065600 PMCID: PMC6029947 DOI: 10.5021/ad.2018.30.4.496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 05/22/2017] [Revised: 08/30/2017] [Accepted: 09/12/2017] [Indexed: 11/08/2022] Open
Affiliation(s)
- Jeong-Wan Seo
- Department of Dermatology, Dong-A University, College of Medicine, Busan, Korea
| | - Seung-Min Ha
- Department of Dermatology, Dong-A University, College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University, College of Medicine, Busan, Korea
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Kim TH, Seo JW, Hong YS, Song KH. A Case-Control Study of Skin Cancer and Exposure of Toxic Heavy Metals. Ann Dermatol 2018; 30:238-240. [PMID: 29606828 PMCID: PMC5839902 DOI: 10.5021/ad.2018.30.2.238] [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: 01/24/2017] [Revised: 03/22/2017] [Accepted: 04/03/2017] [Indexed: 11/16/2022] Open
Affiliation(s)
- Tae-Hoon Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Jeong-Wook Seo
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center, College of Medicine, Dong-A University, Busan, Korea
| | - Young-Seoub Hong
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Seo JW, Song KH. Topical calcipotriol before ablative fractional laser-assisted photodynamic therapy enhances treatment outcomes for actinic keratosis in Fitzpatrick grades III-V skin: A prospective randomized clinical trial. J Am Acad Dermatol 2018; 78:795-797. [DOI: 10.1016/j.jaad.2017.11.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 10/13/2017] [Accepted: 11/07/2017] [Indexed: 10/18/2022]
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Seo JW, Ha SM, Song KH. Insulin-like growth factor-2 mRNA-binding protein 3 as a novel prognostic biomarker for acral lentiginous melanoma. Br J Dermatol 2018; 178:e268-e270. [PMID: 29048737 DOI: 10.1111/bjd.16077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- J W Seo
- Department of Dermatology, College of Medicine, Dong-A University, Dong Dae Sin-Dong, Seo-gu, Busan, 602-715, Republic of Korea
| | - S M Ha
- Pungsan Public Health Center Branch, Jeonbuk, Republic of Korea
| | - K H Song
- Department of Dermatology, College of Medicine, Dong-A University, Dong Dae Sin-Dong, Seo-gu, Busan, 602-715, Republic of Korea
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Hong YS, Ye BJ, Kim YM, Kim BG, Kang GH, Kim JJ, Song KH, Kim YH, Seo JW. Investigation of Health Effects According to the Exposure of Low Concentration Arsenic Contaminated Ground Water. Int J Environ Res Public Health 2017; 14:E1461. [PMID: 29186890 PMCID: PMC5750880 DOI: 10.3390/ijerph14121461] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/22/2017] [Accepted: 11/24/2017] [Indexed: 12/21/2022]
Abstract
Recent epidemiological studies have reported adverse health effects, including skin cancer, due to low concentrations of arsenic via drinking water. We conducted a study to assess whether low arsenic contaminated ground water affected health of the residents who consumed it. For precise biomonitoring results, the inorganic (trivalent arsenite (As III) and pentavalent arsenate (As V)) and organic forms (monomethylarsonate (MMA) and dimethylarsinate (DMA)) of arsenic were separately quantified by combining high-performance liquid chromatography and inductively coupled plasma mass spectroscopy from urine samples. In conclusion, urinary As III, As V, MMA, and hair arsenic concentrations were significantly higher in residents who consumed arsenic contaminated ground water than control participants who consumed tap water. But, most health screening results did not show a statistically significant difference between exposed and control subjects. We presume that the elevated arsenic concentrations may not be sufficient to cause detectable health effects. Consumption of arsenic contaminated ground water could result in elevated urinary organic and inorganic arsenic concentrations. We recommend immediate discontinuation of ground water supply in this area for the safety of the residents.
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Affiliation(s)
- Young-Seoub Hong
- Department of Preventive Medicin, Dong-A University, Busan 49201, Korea.
- Environmental Health Center, Dong-A University, Busan 49201, Korea.
| | - Byeong-Jin Ye
- Gimhae Clinic Occupational Health Center, Inje University, Gimhae 50969, Korea.
| | - Yu-Mi Kim
- Department of Preventive Medicin, Dong-A University, Busan 49201, Korea.
- Environmental Health Center, Dong-A University, Busan 49201, Korea.
| | - Byoung-Gwon Kim
- Department of Preventive Medicin, Dong-A University, Busan 49201, Korea.
- Environmental Health Center, Dong-A University, Busan 49201, Korea.
| | | | - Jeong-Jin Kim
- Department of Earth and Environmental Science, Andong National University, Andong 36729, Korea.
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University, Busan 49201, Korea.
| | - Young-Hun Kim
- Department of Environmental Engineering, Andong National University, Andong 36729, Korea.
| | - Jeong-Wook Seo
- Environmental Health Center, Dong-A University, Busan 49201, Korea.
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Chung CS, Song KH, Choi KY, Kim YI, Kim HE, Jung JM, Kim CJ. Variations in the concentrations of heavy metals through enforcement of a rest-year system and dredged sediment capping at the Yellow Sea-Byung dumping site, Korea. Mar Pollut Bull 2017; 124:512-520. [PMID: 28733040 DOI: 10.1016/j.marpolbul.2017.07.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/12/2017] [Accepted: 07/14/2017] [Indexed: 05/09/2023]
Abstract
In 2014, the concentrations of 13 heavy metals in surface sediments from 14 sampling stations were analyzed and compared to samples from previous years to evaluate the remediation effectiveness of the "rest-year" (RY) system and capping with dredged material at the Yellow Sea-Byung dumping site offshore Korea. Since the 2006 introduction of the RY system, annual variations in metal concentrations at stations within the RY zone have gradually decreased over time. Heavy metal concentrations at most stations were lower than sediment quality guidelines, indicating the success of the RY system. Additionally, the effects of capping the contaminated sediment with dredged materials were investigated. The results indicate that dredged materials successfully capped the contaminated sediment within the dredged material dumping area, as the concentrations of Cr and total organic carbon were significantly reduced. We conclude that dredged materials may be used as capping materials for the remediation of contaminated sediments.
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Affiliation(s)
- Chang-Soo Chung
- Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea
| | - Ki-Hoon Song
- Agency for Defense Development, Daejeon 34188, Republic of Korea
| | - Ki-Young Choi
- Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea
| | - Young-Il Kim
- East Sea Research Institute, Korea Institute of Ocean Science and Technology, Uljin 36315, Republic of Korea
| | - Hye-Eun Kim
- Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea
| | - Jun-Mo Jung
- Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea
| | - Chang-Joon Kim
- Marine Chemistry and Geochemistry Research Center, Korea Institute of Ocean Science and Technology, Ansan 15627, Republic of Korea.
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Kim TH, Seo JW, Hong YS, Song KH. Case-control study of chronic low-level exposure of inorganic arsenic species and non-melanoma skin cancer. J Dermatol 2017; 44:1374-1379. [DOI: 10.1111/1346-8138.13993] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 06/27/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Tae-Hoon Kim
- Department of Dermatology; College of Medicine; Dong-A University; Busan Korea
| | - Jeong-Wook Seo
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center; College of Medicine; Dong-A University; Busan Korea
| | - Young-Seoub Hong
- Department of Preventive Medicine and Dong-A University Heavy Metal Exposure Environmental Health Center; College of Medicine; Dong-A University; Busan Korea
| | - Ki-Hoon Song
- Department of Dermatology; College of Medicine; Dong-A University; Busan Korea
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Choi SH, Kim TH, Song KH. Efficacy of iontophoresis-assisted ablative fractional laser photodynamic therapy with short incubation time for the treatment of actinic keratosis: 12-month follow-up results of a prospective, randomised, comparative trial. Photodiagnosis Photodyn Ther 2017; 18:105-110. [DOI: 10.1016/j.pdpdt.2017.01.184] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/08/2017] [Accepted: 01/29/2017] [Indexed: 10/20/2022]
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Shin SM, Choi DK, Jung K, Bae J, Kim JS, Park SW, Song KH, Kim YS. Antibody targeting intracellular oncogenic Ras mutants exerts anti-tumour effects after systemic administration. Nat Commun 2017; 8:15090. [PMID: 28489072 PMCID: PMC5436137 DOI: 10.1038/ncomms15090] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 02/28/2017] [Indexed: 12/24/2022] Open
Abstract
Oncogenic Ras mutants, frequently detected in human cancers, are high-priority anticancer drug targets. However, direct inhibition of oncogenic Ras mutants with small molecules has been extremely challenging. Here we report the development of a human IgG1 format antibody, RT11, which internalizes into the cytosol of living cells and selectively binds to the activated GTP-bound form of various oncogenic Ras mutants to block the interactions with effector proteins, thereby suppressing downstream signalling and exerting anti-proliferative effects in a variety of tumour cells harbouring oncogenic Ras mutants. When systemically administered, an RT11 variant with an additional tumour-associated integrin binding moiety for tumour tissue targeting significantly inhibits the in vivo growth of oncogenic Ras-mutated tumour xenografts in mice, but not wild-type Ras-harbouring tumours. Our results demonstrate the feasibility of developing therapeutic antibodies for direct targeting of cytosolic proteins that are inaccessible using current antibody technology.
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Affiliation(s)
- Seung-Min Shin
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Dong-Ki Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Keunok Jung
- Priority Research Center for Molecular Science &Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Jeomil Bae
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Ji-Sun Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Seong-Wook Park
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Ki-Hoon Song
- Department of Allergy and Clinical Immunology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
| | - Yong-Sung Kim
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
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Hong JW, Lee CY, Ha SM, Choi SH, Kim TH, Song KH, Kim KH. The Contributory Roles of Th17 Lymphocyte and Cytotoxic T Lymphocyte at the Hair Bulge Region as Well as the Hair Bulb Area in the Chronic Alopecia Areata Patients. Ann Dermatol 2017; 29:156-166. [PMID: 28392642 PMCID: PMC5383740 DOI: 10.5021/ad.2017.29.2.156] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/19/2016] [Revised: 06/07/2016] [Accepted: 07/08/2016] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Alopecia areata (AA) is a T cell-mediated autoimmune disease that targets hair follicles and interrupts hair regrowth. The microenvironment of the effector T cells and their related cytokines may affect immunopathogenesis around the hair bulb/bulge. OBJECTIVE To determine the contributory roles of the effector T cell subsets and related cytokines to the pathogenesis of AA. METHODS We investigated the correlation between histopathological grades and four clinical prognostic factors in 331 patients with AA, and analyzed the topography of T cell infiltrates and related cytokines around the hair bulb/bulge according to histopathological grades through immunohistochemical and double immunofluorescence studies on a subset of AA specimens. RESULTS First, the groups with more severe histopathological grades were associated with earlier onset, longer duration, more hair loss, as well as poorer therapeutic outcomes. Second, the pattern of CD4 and CD8 expression around the hair bulb/bulge varied by histopathological grade, with staining density decreasing in the following order: type 1>type 2>type 3. In addition, interferon-γ and transforming growth factor-β1 expression appeared denser in the peribulbar area. Interestingly, the denser CCR6+ cells (Th17 cells) showed more infiltration than CCR5+ cells (Th1 cells) around the hair bulb/bulge as histopathological grade worsened. CONCLUSION The insidious destruction of bulge stem cells and hair bulb matrix stem cells results in more severe hair loss in patients with chronic AA, which is mediated by Th17 lymphocyte and cytotoxic T lymphocyte infiltration. Furthermore, Th17 lymphocytes may play an even more important role than cytotoxic T cells in the development of AA.
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Affiliation(s)
- Jin-Woo Hong
- Korean Hansen Welfare Association of Jin-Ju Branch, Jinju, Korea
| | | | - Seung-Min Ha
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Seung-Hwan Choi
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Tae-Hoon Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Choi SH, Kim KH, Song KH. Effect of Methyl Aminolevulinate Photodynamic Therapy With and Without Ablative Fractional Laser Treatment in Patients With Microinvasive Squamous Cell Carcinoma. JAMA Dermatol 2017; 153:289-295. [DOI: 10.1001/jamadermatol.2016.4463] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [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)
- Seung-Hwan Choi
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Ki-Ho Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Republic of Korea
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Song KH, Park MS, Nandu TS, Gadad S, Kim SC, Kim MY. GALNT14 promotes lung-specific breast cancer metastasis by modulating self-renewal and interaction with the lung microenvironment. Nat Commun 2016; 7:13796. [PMID: 27982029 PMCID: PMC5171903 DOI: 10.1038/ncomms13796] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 11/02/2016] [Indexed: 12/23/2022] Open
Abstract
Some polypeptide N-acetyl-galactosaminyltransferases (GALNTs) are associated with cancer, but their function in organ-specific metastasis remains unclear. Here, we report that GALNT14 promotes breast cancer metastasis to the lung by enhancing the initiation of metastatic colonies as well as their subsequent growth into overt metastases. Our results suggest that GALNT14 augments the self-renewal properties of breast cancer cells (BCCs). Furthermore, GALNT14 overcomes the inhibitory effect of lung-derived bone morphogenetic proteins (BMPs) on self-renewal and therefore facilitates metastasis initiation within the lung microenvironment. In addition, GALNT14 supports continuous growth of BCCs in the lung by not only inducing macrophage infiltration but also exploiting macrophage-derived fibroblast growth factors (FGFs). Finally, we identify KRAS-PI3K-c-JUN signalling as an upstream pathway that accounts for the elevated expression of GALNT14 in lung-metastatic BCCs. Collectively, our findings uncover an unprecedented role for GALNT14 in the pulmonary metastasis of breast cancer and elucidate the underlying molecular mechanisms.
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Affiliation(s)
- Ki-Hoon Song
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejon 305-701, Korea
| | - Mi So Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejon 305-701, Korea
| | - Tulip S. Nandu
- Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Shrikanth Gadad
- Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Sang-Cheol Kim
- Department of Biomedical Informatics, Center for Genome Science, National Institute of Health, KCDC, Choongchung-Buk-do 363-951, Korea
| | - Mi-Young Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejon 305-701, Korea
- KAIST Institute for the BioCentury, Cancer Metastasis Control Center, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea
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Byun SY, Jeong JW, Choi JH, Lee KP, Youn HY, Maeng HJ, Song KH, Koo TS, Seo KW. Pharmacokinetic study of meropenem in healthy beagle dogs receiving intermittent hemodialysis. J Vet Pharmacol Ther 2016; 39:560-565. [PMID: 27302674 DOI: 10.1111/jvp.12326] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 04/20/2016] [Indexed: 11/30/2022]
Abstract
Meropenem, a second carbapenem antimicrobial agent with a broad spectrum of activity, is used to treat sepsis and resistant-bacterial infections in veterinary medicine. The objective of this study was to identify the pharmacokinetics of meropenem in dogs receiving intermittent hemodialysis (IHD) and to determine the proper dosing in renal failure patients receiving IHD. Five healthy beagle dogs were given a single i.v. dose of 24 mg/kg of meropenem and received IHD. The blood flow rate, dialysate flow, and ultrafiltration rate were maintained at 40 mL/min, 300 mL/min, and 40 mL/h, respectively. Blood samples were collected for 24 h from the jugular vein and from the extracorporeal arterial and venous line. Urine samples and dialysate were also collected. The concentrations of meropenem were assayed using HPLC/MS/MS determination. The peak plasma concentration was 116 ± 37 μg/mL at 15 min. The systemic clearance was 347 ± 117 mL/h/kg, and the steady-state volume of distribution was 223 ± 67 mL/kg. Dialysis clearance was 71.1 ± 34.3 mL/h/kg, and the extraction ratio by hemodialysis was 0.455 ± 0.150. The half-life (T1/2 ) in dogs with IHD decreased compared with those without IHD, and the reduction in T1/2 was greater in renal failure patients than in normal patients. Sixty-nine percent and 21% of the administered drug were recovered by urine and dialysate in the unchanged form, respectively. In conclusion, additional dosing of 24 mg/kg of meropenem after dialysis could be necessary according to the residual renal function of the patient based on the simulated data.
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Affiliation(s)
- S Y Byun
- College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - J W Jeong
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon, Korea
| | - J H Choi
- College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - K P Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - H Y Youn
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - H J Maeng
- College of Pharmacy, Gachon University, Incheon, Korea
| | - K H Song
- College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - T S Koo
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon, Korea.
| | - K W Seo
- College of Veterinary Medicine, Chungnam National University, Daejeon, Korea.
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Ko DY, Choi SH, Ha SM, Kim TH, Song KH, Kim KH, Kim KH. The clinical severity score of chronic actinic dermatitis correlates with in vivo photoallergic reactions and the immunologic parameters related to a shift towards Th2 immunity from the Th2/Th1 balanced status in patients with chronic actinic dermatitis. Photodermatol Photoimmunol Photomed 2016; 32:199-206. [PMID: 27084788 DOI: 10.1111/phpp.12244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/07/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Chronic actinic dermatitis (CAD) has a more complicated pathogenetic basis than others. The clinical grading system and its correlations with the clinical and immunological parameters still remained to be investigated to define the nature of CAD in a more detailed manner. OBJECTIVES We investigated correlations of the clinical severity score of CAD (CSS-CAD) with the clinical and immunological parameters. METHODS We evaluated 72 patients with CAD and classified them into three groups according to the CSS-CAD. We analysed total IgE level, peripheral blood (PB) eosinophil count, the ratio of Th2cell (CCR4 + CD4 +) percentage over Th1 cell (CXCR3 + CD4 +) percentage (Th2/Th1) and/or the sum of suppressor/cytotoxic T cells. RESULTS The total IgE levels and the percentage of PB eosinophils were higher in the severer group than other groups. A shift towards Th2 from Th2/Th1 balanced status may be affected by total counts of suppressor T cells, and the patient with higher Th2/Th1 ratio than balanced status had the more proportion in the severer CSS-CAD group than other groups. CONCLUSION The CSS-CAD correlates with total IgE level, PB eosinophil count and a shift towards Th2 immunity from Th2/Th1. So we suggest the Th1/Th2 dysbalance may be affected by the CSS-CAD.
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Affiliation(s)
- Dong-Yeob Ko
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Seung-Hwan Choi
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Seung-Min Ha
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Tae-Hoon Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Kyeong Hee Kim
- Department of Laboratory Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Choi SH, Kim KH, Song KH. Clinical Features of Cutaneous Premalignant Lesions in Busan City and the Eastern Gyeongnam Province, Korea: A Retrospective Review of 1,292 Cases over 19 Years (1995~2013). Ann Dermatol 2016; 28:172-8. [PMID: 27081263 PMCID: PMC4828379 DOI: 10.5021/ad.2016.28.2.172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 02/24/2015] [Revised: 05/25/2015] [Accepted: 06/05/2015] [Indexed: 11/17/2022] Open
Abstract
Background The global prevalence of premalignant lesions has been continuously increasing in recent years, but there has been little research regarding the distribution and incidence of cutaneous premalignant lesions in Korean populations. Objective We conducted this retrospective study to analyze recent trends in the incidence and clinical patterns of cutaneous premalignant lesions in the Korean population. Methods We reviewed 1,292 cases (3,651 lesions) of patients with cutaneous premalignant lesions, including actinic keratosis (AK) and Bowen's disease (BD), from the Department of Dermatology at Dong-A University Hospital (January 1995 to December 2013). Results The average cutaneous premalignant lesion annual incidence was 1.82%, and the incidence continuously increased from 0.70% to 4.25% over the study period. The most common cutaneous premalignant lesion was AK (75.85%), followed by BD (24.15%). The mean age of onset was 68.76 years (men, 70.89 years; women, 65.56 years), and the male:female ratio of patients was 1:1.52. Major skin cancers, including squamous cell carcinoma (SCC, 8.90%), basal cell carcinoma (BCC, 6.42%), and malignant melanoma (MM, 0.70%), were detected in 15.79% of patients with cutaneous premalignant lesions. Three patients (0.23%) were previously diagnosed with both SCC and BCC. In addition, 59.13% of patients had a single lesion, while 40.87% had multiple lesions. Patient age, history of previous skin cancers, and occupation-related exposure to ultraviolet radiation were more common in patients with multiple lesions. Conclusion Cutaneous premalignant lesion incidence has gradually increased in the Korean population.
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Affiliation(s)
- Seung-Hwan Choi
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Kim JH, Kim TH, Park HJ, Choi YJ, Kang JH, Song KH, Koo TS, Seo KW. The pharmacokinetics of the β2-adrenoceptor agonist, tulobuterol, in Beagle dogs following transdermal and intravenous administration. Vet J 2015; 208:90-2. [PMID: 26639828 DOI: 10.1016/j.tvjl.2015.10.012] [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: 03/06/2015] [Revised: 10/01/2015] [Accepted: 10/04/2015] [Indexed: 11/25/2022]
Abstract
Tulobuterol is a β2-adrenergic agonist that was the first bronchodilator approved as a transdermal patch for humans. Previous studies have examined the pharmacokinetics of tulobuterol in humans but not in the veterinary species. In this study, the pharmacokinetics of tulobuterol was examined in healthy Beagle dogs after transdermal and intravenous administration. The Cmax was 2.09 ng/mL at 16.0 h for a 0.2 mg/kg patch and 4.85 ng/mL at 13.6 h for a 0.4 mg/kg patch. The effective blood level in humans is 1-3 ng/mL, a concentration achieved using the 0.2 mg/kg patch in dogs. In conclusion, application of a 0.2 mg/kg tulobuterol patch to healthy dogs led to an apparently effective blood concentration for 24 h.
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Affiliation(s)
- J H Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 99 Daehakro, Daejeon, South Korea
| | - T H Kim
- Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehakro, Daejeon, South Korea
| | - H J Park
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 99 Daehakro, Daejeon, South Korea
| | - Y J Choi
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 99 Daehakro, Daejeon, South Korea
| | - J H Kang
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763, South Korea
| | - K H Song
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 99 Daehakro, Daejeon, South Korea
| | - T S Koo
- Graduate School of New Drug Discovery and Development, Chungnam National University, 99 Daehakro, Daejeon, South Korea.
| | - K W Seo
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 99 Daehakro, Daejeon, South Korea.
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Jeon SY, Kim DC, Song KH, Kim KH. Expression Patterns of Gli-1, Pleckstrin Homology-Like Domain, Family A, Member 1, Transforming Growth Factor-β1/β2, and p63 in Sebaceous and Follicular Tumors. Ann Dermatol 2014; 26:713-21. [PMID: 25473223 PMCID: PMC4252668 DOI: 10.5021/ad.2014.26.6.713] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 10/28/2013] [Revised: 03/01/2014] [Accepted: 03/04/2014] [Indexed: 01/31/2023] Open
Abstract
Background Certain epidermal appendage tumors, including hyperplasias (hamartomas), adenomas, benign epitheliomas, primordial epitheliomas, and malignant tumors, can exhibit any stage of differentiation. Several molecules associated with tumorigenesis, such as Gli-1, pleckstrin homology-like domain, family A, member 1 (PHLDA-1), transforming growth factor (TGF)-β1, TGF-β2, and p63, are associated with tumor grade and aggressive behavior in follicular and sebaceous tumors in ways that are not well understood. Objective The aim of this study was to elucidate the expression of Gli-1, PHLDA-1, TGF-β1/β2, and p63 in benign and malignant tumors of the hair and sebaceous glands and to determine their importance in the degree of tumor differentiation. Methods Immunohistochemistry was performed in follicular and sebaceous tumors using antibodies against Gli-1 (sebaceous tumor marker), PHLDA-1 (hair follicle outer root sheath [ORS] cell marker), p63, TGF-β1, and TGF-β2. Results Gli-1 was expressed in basaloid cells, sebocytes, and sebaceous carcinoma cells, and expression levels decreased as differentiation progressed. PHLDA-1 was expressed in ORS cells and some follicular tumor cells. Expression of p63 was observed in the nuclei of the outermost basaloid cells (seboblasts), poorly differentiated sebaceous carcinoma cells, and tumor cells toward the direction of the hair. Remarkably, TGF-β1 was expressed exclusively in the nuclei of benign and malignant follicular (hair) tumors, but not in sebaceous tumors, at levels that correlated with the degree of differentiation. Conclusion We propose that p63 and/or TGF-β1 are useful for predicting the degree of differentiation and malignant potential of sebaceous and follicular tumors and for distinguishing trichilemmal carcinoma from sebaceous carcinoma.
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Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Dae-Cheol Kim
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Chung JY, Lim HJ, Kim YJ, Song KH, Kim BG, Hong YS. The separation of arsenic metabolites in urine by high performance liquid chromatographyinductively coupled plasma-mass spectrometry. Environ Health Toxicol 2014; 29:e2014018. [PMID: 25384385 PMCID: PMC4271672 DOI: 10.5620/eht.e2014018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 10/16/2014] [Indexed: 05/30/2023]
Abstract
OBJECTIVES The purpose of this study was to determine a separation method for each arsenic metabolite in urine by using a high performance liquid chromatography (HPLC)- inductively coupled plasma-mass spectrometer (ICP-MS). METHODS Separation of the arsenic metabolites was conducted in urine by using a polymeric anion-exchange (Hamilton PRP X-100, 4.6 mm×150 mm, 5 μm) column on Agilent Technologies 1260 Infinity LC system coupled to Agilent Technologies 7700 series ICP/MS equipment using argon as the plasma gas. RESULTS All five important arsenic metabolites in urine were separated within 16 minutes in the order of arsenobetaine, arsenite, dimethylarsinate, monomethylarsonate and arsenate with detection limits ranging from 0.15 to 0.27 μg/L (40 μL injection). We used GEQUAS No. 52, the German external quality assessment scheme and standard reference material 2669, National Institute of Standard and Technology, to validate our analyses. CONCLUSIONS The method for separation of arsenic metabolites in urine was established by using HPLC-ICP-MS. This method contributes to the evaluation of arsenic exposure, health effect assessment and other bio-monitoring studies for arsenic exposure in South Korea.
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Affiliation(s)
- Jin-Yong Chung
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
| | - Hyoun-Ju Lim
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
| | | | - Ki-Hoon Song
- Department of Dermatology, Dong-A University Hospital, Busan, Korea
| | - Byoung-Gwon Kim
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Young-Seoub Hong
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, Korea
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Jeon SY, Kim KH, Song KH. Efficacy of fluorescence diagnosis-guided Mohs micrographic surgery for pigmented vs non-pigmented basal cell carcinoma. Acta Derm Venereol 2014; 94:568-73. [PMID: 24448667 DOI: 10.2340/00015555-1783] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pigmented basal cell carcinoma (PBCC) occurs more frequently in Asian population. The efficacy of fluorescence diagnosis (FD) for PBCCs treated with Mohs micrographic surgery has not yet been determined. This study enrolled 255 patients with 258 biopsy-proven BCC lesions: 199 PBCCs (77.1%) and 59 non-PBCCs (22.9%). We compared the clinicopathological and surgical features of the PBCCs and non-PBCCs. Each group was divided into 2 sub-groups, those assessed and not assessed by FD, to retrospectively analyse surgical features. Aggressive histological subtypes were less prevalent in PBCCs than in non-PBCCs. PBCCs required significantly fewer stages of Mohs excision, with significantly smaller surgical margins and surgical depth, than non-PBCCs. FD did not confer any benefits on PBCCs during Mohs micrographic surgery. However, non-PBCCs assessed by FD required significantly fewer Mohs stages, with significantly smaller surgical margins, than lesions not assessed by FD. These findings suggest that FD should be performed before Mohs micrographic surgery to delineate the margins of non-PBCCs in Asians.
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Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, College of Medicine, Dong-A University, Dong dae sin-dong, Seo-gu, Busan, 602-715, Korea
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Abstract
Arsenic is a unique element with distinct physical characteristics and toxicity whose importance in public health is well recognized. The toxicity of arsenic varies across its different forms. While the carcinogenicity of arsenic has been confirmed, the mechanisms behind the diseases occurring after acute or chronic exposure to arsenic are not well understood. Inorganic arsenic has been confirmed as a human carcinogen that can induce skin, lung, and bladder cancer. There are also reports of its significant association to liver, prostate, and bladder cancer. Recent studies have also suggested a relationship with diabetes, neurological effects, cardiac disorders, and reproductive organs, but further studies are required to confirm these associations. The majority of research to date has examined cancer incidence after a high exposure to high concentrations of arsenic. However, numerous studies have reported various health effects caused by chronic exposure to low concentrations of arsenic. An assessment of the health effects to arsenic exposure has never been performed in the South Korean population; thus, objective estimates of exposure levels are needed. Data should be collected on the biological exposure level for the total arsenic concentration, and individual arsenic concentration by species. In South Korea, we believe that biological exposure assessment should be the first step, followed by regular health effect assessments.
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Affiliation(s)
- Young-Seoub Hong
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Jin-Yong Chung
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
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Jeon SY, Ha SM, Ko DY, Ku BS, Lee CY, Song KH, Kim KH. Tazarotene-induced gene 3 may affect inflammatory angiogenesis in psoriasis by downregulating placental growth factor expression. Ann Dermatol 2014; 26:517-20. [PMID: 25143685 PMCID: PMC4135111 DOI: 10.5021/ad.2014.26.4.517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 08/09/2012] [Revised: 12/30/2012] [Accepted: 04/04/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Seung-Min Ha
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Dong-Yeob Ko
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Bon-Seok Ku
- Beautiful Esthetic & Dermatologic Clinics, Busan, Korea
| | - Chae-Young Lee
- Department of Dermatology, Sorokdo National Hospital, Goheung, Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Ko DY, Kim KH, Song KH. Comparative Study of Photodynamic Therapy with Topical Methyl Aminolevulinate versus 5-Aminolevulinic Acid for Facial Actinic Keratosis with Long-Term Follow-Up. Ann Dermatol 2014; 26:321-31. [PMID: 24966631 PMCID: PMC4069642 DOI: 10.5021/ad.2014.26.3.321] [Citation(s) in RCA: 20] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/11/2013] [Accepted: 06/20/2013] [Indexed: 11/08/2022] Open
Abstract
Background Few studies have compared the efficacy, cosmetic outcomes, and adverse events between 5-aminolevulinic acid photodynamic therapy (ALA-PDT) and methyl aminolevulinate-PDT (MAL-PDT) for actinic keratoses (AKs) in Asian ethnic populations with dark-skin. Objective We retrospectively compared the long-term efficacy, recurrence rates, cosmetic outcomes, and safety of ALA-PDT versus MAL-PDT for facial AKs in Koreans. Methods A total of 222 facial AKs in 58 patients were included in this study. A total of 153 lesions (29 patients) were treated with 5-ALA, and 69 lesions (29 patients) with MAL. ALA and MAL creams were applied for 6 hours and 3 hours, respectively; the lesions were then illuminated with a halogen lamp at 150 J/cm2 for ALA-PDT and a diode lamp at 37 J/cm2 for MAL-PDT. Results The complete response rates of ALA-PDT and MAL-PDT were 56.9% and 50.7%, respectively, with no significant difference at 12 months after treatment. No significant difference in recurrence rates was observed between the 2 PDT modalities at either 6 or 12 months after treatment. There was no significant difference in the cosmetic outcomes between the 2 treatment modalities at 12 months after PDT. However, ALA-PDT caused significantly more painful than MAL-PDT (p=0.005). The adverse events were mild to moderate, transient, and self-limiting for both modalities. Conclusion MAL-PDT was similar to ALA-PDT in terms of long-term efficacy, recurrence rates, cosmetic outcomes, and adverse events; however, it was a significantly less painful procedure than ALA-PDT in our study.
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Affiliation(s)
- Dong-Yeob Ko
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Hong JW, Lee S, Kim DC, Kim KH, Song KH. Prognostic and Clinicopathologic Associations of BRAF Mutation in Primary Acral Lentiginous Melanoma in Korean Patients: A Preliminary Study. Ann Dermatol 2014; 26:195-202. [PMID: 24882974 PMCID: PMC4037672 DOI: 10.5021/ad.2014.26.2.195] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [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: 02/07/2013] [Revised: 04/07/2013] [Accepted: 04/19/2013] [Indexed: 01/15/2023] Open
Abstract
Background In the majority of melanomas, the RAS/RAF/MEK/ERK signaling pathway is constitutively activated, due to oncogenic mutations in the BRAF and NRAS genes. The BRAF mutation has been mainly described in Caucasian melanomas. However, there is a lack of study evaluating the status, and the clinical significance, of BRAF mutation in the Asian population. Objective This study was aimed to determine the frequency of BRAF mutation, and to evaluate the correlation of BRAF status with clinicopathologic features and outcomes, in Korean primary acral lentiginous melanoma (ALM) patients. Methods ALM samples (n=36) were analyzed for the BRAF V600E mutation, by dual-priming oligonucleotide (DPO) based real-time polymerase chain reaction. The clinicopathologic features and prognosis of the patients were analyzed with BRAF mutation status. Results The incidence of BRAF V600E mutation was 19.4% (7/36). The BRAF V600E mutations were not associated with clinicopathologic features, except for the age factor. All of the BRAF-mutant patients survived without recurrence or metastasis, and have a better clinical outcome than BRAF wild-type patients. Conclusion In Korean primary ALM, a low frequency of BRAF mutation was shown; and BRAF mutation presented with a favorable prognosis. These results indicate that other distinctive genetic mechanisms may have more important roles in the development and progression of disease. Further multicenter study with large sample size is firmly needed, to confirm the results of our preliminary study.
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Affiliation(s)
- Jin-Woo Hong
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Suee Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Dae-Cheol Kim
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Jeon SY, Hong JW, Lee S, Oh SY, Hong YS, Kim KH, Song KH. Long-term survival analysis and clinical follow-up in acral lentiginous malignant melanoma undergoing sentinel lymph node biopsy in korean patients. Ann Dermatol 2014; 26:177-83. [PMID: 24882971 PMCID: PMC4037669 DOI: 10.5021/ad.2014.26.2.177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 03/10/2013] [Accepted: 04/10/2013] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND In cutaneous malignant melanoma (MM) with clinically uninvolved regional lymph nodes, sentinel lymph node (SLN) status is the most powerful indicator of both overall survival (OS) and disease-free survival (DFS). However, no studies on the long-term survival and clinical follow-up of Korean patients with acral lentiginous MM (ALM) undergoing SLN biopsy (SLNB) have been published. OBJECTIVE The purpose of this study was to investigate the clinical prognosis and long-term survival of Korean patients with ALM according to SLN status. METHODS Thirty-four ALM patients undergoing SLNB were included in this study. We evaluated clinical and histopathological follow-up data such as the stage of disease, treatment, recurrence, and metastasis, and analyzed OS and DFS according to SLN status. RESULTS The median follow-up time was 60.5 months (range 3~127 months). Positive SLNs were noted in 14 patients (41.2%). Patients with negative SLNs had better OS and DFS than those with positive SLNs (p<0.05). Increased Breslow thickness was associated with short OS and DFS (p<0.05), and female patients showed better DFS than male patients (p<0.05). CONCLUSION To our knowledge, this is the first study on the long-term survival and clinical follow-up of patients undergoing SLNB for ALM in Korea. Our findings show that SLN status is an important prognostic factor for predicting OS and DFS.
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Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Jin-Woo Hong
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Suee Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Sung Yong Oh
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Young-Seoub Hong
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Lee H, Kim ES, Choi C, Seo H, Shin M, Bok JH, Cho JE, Kim CJ, Shin JW, Kim TS, Song KH, Park KU, Kim BI, Kim HB. Outbreak among healthy newborns due to a new variant of USA300-related meticillin-resistant Staphylococcus aureus. J Hosp Infect 2014; 87:145-51. [PMID: 24856113 DOI: 10.1016/j.jhin.2014.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 12/05/2013] [Accepted: 04/09/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND The prevalence of community-associated meticillin-resistant Staphylococcus aureus (CA-MRSA) is increasing throughout the world and is an important cause of skin and soft tissue infection (SSTI) in children and neonates. AIM To describe the successful control of an outbreak caused by a new strain of CA-MRSA in a newborn nursery. METHODS The investigation of the outbreak in July 2012 is reported with the control measures taken. Molecular typing of the MRSA isolates was performed. FINDINGS An outbreak of SSTI caused by CA-MRSA occurred in a newborn nursery. Six neonates were infected in a one-month period [infection rate: 8.5% (6/71)]. A new variant of CA-MRSA was responsible, which was characterized as USA300-related, Panton-Valentine Leucocidin (PVL) positive, arginine catabolic mobile element (ACME) negative, sequence type 8 (ST8), staphylococcal cassette chromosome mec (SCCmec) type IVa, agr type I and spa type t008. The outbreak among term neonates followed a rapid transmission pattern and was successfully controlled by implementing various outbreak control measures, including universal chlorhexidine bathing. CONCLUSION This is the first report of a hospital outbreak caused by a USA300-related CA-MRSA clone in Korea. Early recognition and reinforcement of infection control measures are important in decreasing transmission of CA-MRSA in a hospital setting.
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Affiliation(s)
- H Lee
- Department of Paediatrics, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - E S Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
| | - C Choi
- Department of Paediatrics, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - H Seo
- Infection Control Office, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - M Shin
- Infection Control Office, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - J H Bok
- Department of Nursing, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - J E Cho
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - C J Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - J W Shin
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - T S Kim
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - K H Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - K U Park
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - B I Kim
- Department of Paediatrics, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea; Infection Control Office, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Jeon SY, Lee CY, Song KH, Kim KH. Spectrophotometric measurement of minimal erythema dose sites after narrowband ultraviolet B phototesting: clinical implication of spetrophotometric values in phototherapy. Ann Dermatol 2014; 26:17-25. [PMID: 24648682 PMCID: PMC3956791 DOI: 10.5021/ad.2014.26.1.17] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 11/20/2012] [Revised: 12/08/2012] [Accepted: 12/31/2012] [Indexed: 11/23/2022] Open
Abstract
Background The spectrophotometer is well known to be a useful tool for estimating the objective minimal erythema dose (MED) during planning of phototherapy protocol. However, only a few spectrophotometric values are used to evaluate the erythema and pigmentation of the MED site during phototesting. Objective To determinea new meaning of the relationships among spectrophotometric values during phototesting. Methods Twenty-five patients with psoriasis and 23 patients with vitiligo were selected before undergoing narrowband ultraviolet B phototherapy. We interpreted the gross findings of erythema and measured the L*a*b* values using a spectrophotometer at each phototest spot. We compared MEDs, basic spectrophotometric values (L*a*b*), and b*/L* values separately according to skin type, and determined the correlation of each spectrophotometric value and the correlation between a* and b*/L* values. Results Among L*a*b* values, only b* values showed a statistically significant difference between the type III and IV groups (p=0.003). There was a positive correlation only between MEDs and b* values (p<0.05). The average b*/L*value in the type IV group was significantly higher than the type III group (p<0.05). Conclusion The higher b* values in type IV skin indicates that skin tanning develops more prominently than type III. The correlation between MEDs and b* values may signify that the skin pigmentation status is deepened with the higher MEDs. The difference in b*/L*values between type III and IV skin reflects that the b*/L*value is thought to be an index of tanning. The a* value, known as an index of erythema, does not influence the degree of tanning.
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Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Chae-Young Lee
- Department of Dermatology, Sorokdo National Hospital, Goheung, Korea
| | - Ki-Hoon Song
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Jeon SY, Kim KH, Song KH. Efficacy of photodynamic diagnosis-guided Mohs micrographic surgery in primary squamous cell carcinoma. Dermatol Surg 2013; 39:1774-83. [PMID: 24299572 DOI: 10.1111/dsu.12359] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Cutaneous squamous cell carcinoma (cSCC) usually has ill-defined margins because of its irregular invasive patterns. OBJECTIVE To evaluate the surgical efficacy of photodynamic diagnosis (PDD) in primary cSCC treated using Mohs micrographic surgery (MMS). METHODS & MATERIALS We examined 67 cases of biopsy-proven primary facial cSCC treated with MMS. The 67 SCC were divided into the two groups depending on PDD application: PDD group (n = 38, 56.7%) and non-PDD group (n = 29, 43.3%). We analyzed the differences in surgical features between the PDD and non-PDD groups. RESULTS The PDD group required fewer Mohs stages (1.37 vs 1.83, p = .02) and smaller surgical margins (8.03 vs 11.24 mm, p = .03). PDD showed additional benefits in terms of surgical margin and Mohs stage, especially in low-risk SCC, including thin (≤4 mm), small (≤20 mm), well-differentiated, and nonulcerative tumors (p < .05) but did not show beneficial effects in high-risk SCC (p > .05) during MMS. CONCLUSION PDD can increase surgical efficacy of primary cSCC during MMS. These benefits are more pronounced in low-risk SCC. We recommend PDD as a simple and useful technique for delineating the margins of low-risk SCC before MMS.
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Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, Skin Cancer Center, College of Medicine, Dong-A University, Busan, Korea
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Kim TW, Mun JH, Jwa SW, Song M, Kim HS, Ko HC, Kim MB, Song KH, Lee SK, Seo JK, Lee D, Kim BS. Proactive treatment of adult facial seborrhoeic dermatitis with 0.1% tacrolimus ointment: randomized, double-blind, vehicle-controlled, multi-centre trial. Acta Derm Venereol 2013; 93:557-61. [PMID: 23388687 DOI: 10.2340/00015555-1532] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 11/16/2022] Open
Abstract
The effectiveness of intermittent topical tacrolimus to prevent relapse in patients with stabilized facial seborrhoeic dermatitis has not been evaluated. The aim of this study was to determine whether proactive use of 0.1% tacrolimus ointment can keep adult facial seborrhoeic dermatitis in remission. A total of 75 patients who had stabilized facial seborrhoeic dermatitis after 2 weeks' (open-label induction) treatment with 0.1% tacrolimus were randomized in a double-blind fashion to treatment with 0.1% tacrolimus once a week, twice a week, or vehicle twice a week, for 10 weeks (maintenance). Significant improvement in erythema, scaling and pruritus compared with baseline was maintained during the maintenance phase in both tacrolimus groups, but not in the vehicle group. The mean recurrence rate according to global assessment was significantly higher in the tacrolimus once-weekly group than in the twice-weekly group. In conclusion, twice-weekly treatment with 0.1% tacrolimus ointment had superior effects in keeping facial seborrhoeic dermatitis in remission.
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Affiliation(s)
- Tae-Wook Kim
- Department of Dermatology, Pusan National University School of Medicine, Busan, Korea
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Jeon SY, Ha SM, Ko DY, Song KH, Kim KH. Hailey-hailey disease treated with topical tacalcitol. Ann Dermatol 2013; 25:389-90. [PMID: 24003293 PMCID: PMC3756215 DOI: 10.5021/ad.2013.25.3.389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 08/29/2012] [Revised: 10/31/2012] [Accepted: 11/01/2012] [Indexed: 11/14/2022] Open
Affiliation(s)
- Su-Young Jeon
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Song KH, Kim DH, Hayasaki M. The PCR-based detection ofBabesia gibsoniinfection in dogs (German shepherds) reared in South Korea. Annals of Tropical Medicine & Parasitology 2013; 98:149-53. [PMID: 15035725 DOI: 10.1179/000349804225003226] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
German-shepherd dogs from the South Korean provinces of Gangwon and Gyunggi were used in a study exploring both the detection of Babesia gibsoni infection, by use of a PCR-based assay, and the nucleotide sequences of part of the P18 gene of the parasite. Nine (1.8%) of the 501 dogs checked were found PCR-positive. Although the prevalence of the infection appeared slightly higher in the male dogs than in the female (2% v. 1.7%), and in the dogs aged <3 years than in the older animals (2.7% v. 1.1%), these differences were not statistically significant. In addition, the prevalences of infection among the dogs from Gangwon (in the east of the country) and those from Gyunggi (in the west) appeared similar. All nine PCR-positive dogs were confirmed to have B. gibsoni infection by the microscopical examination of thin bloodsmears, which revealed that 0.1%-3% (mean=1.5%) of the dog's erythrocytes harboured the parasite. The nucleotide sequences of the P18 gene of B. gibsoni from each of the PCR-positive dogs were identical to each other and to the corresponding sequence - recorded under accession number AB053292 in the DNA Data Bank of Japan (DDBJ) - previously determined for isolates of B. gibsoni from Japanese dogs. Although the PCR products sequenced in the present study represent only a part of the P18 gene of B. gibsoni, it seems that South Korean and Japanese dogs carry a similar strain of B. gibsoni. These results may help to clarify the phylogenetic position of the B. gibsoni found in South Korea.
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Affiliation(s)
- K H Song
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, South Korea
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Affiliation(s)
- Dong-Yeob Ko
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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Kang JH, Song KH, Nam JS, Min HY, Lee HY, Cho SD, Kim SY, Oh SH. Abstract LB-99: The novel IGF-IR/Akt-dependent anticancer activities of glucosamine are affected by PIK3CA hot-spot mutations and PTEN deletion. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-lb-99] [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
Background: Recent studies have shown that glucosamine inhibits the proliferation of various human cancer cell lines and downregulates the activity of COX-2, HIF-1α, p70S6K, and transglutaminase 2.
Objective: Because the IGF-1R/Akt pathway is a common upstream regulator of p70S6K, HIF-1α, and COX-2, we hypothesized that glucosamine inhibits cancer cell proliferation through this pathway.
Methods: Cell viability was assayed by MTT assay. Total RNA was isolated and reverse transcribed to cDNA for real-time PCR quantification of genes. Western blotting as performed for analyzing expression of proteins. Flow cytometry was performed for apoptosis and cell progression. Balbc/nu mice used in the study for validating results in vivo.
Results: We found that glucosamine inhibited the growth of human non-small cell lung cancer cells in vitro and in vivo and negatively regulated the expression of IGF-1R and phosphorylation of Akt. In other types of cancer cells, including head and neck, breast, prostate, and colon carcinoma cell lines, glucosamine-sensitive cell lines exhibited a more significant decrease in IGF-1R and pAkt levels than glucosamine-resistant cell lines. Interestingly, most of the glucosamine-resistant cell lines have “hot-spot” mutations in PIK3CA, the p110α subunit of PI3K, or loss of PTEN, a negative regulator of Akt activation. In contrast, most of the glucosamine-sensitive cell lines have normal PIK3CA and PTEN genes. Glucosamine decreased the pAkt level through activation of IGF-1R more efficiently in the glucosamine-sensitive than in the glucosamine-resistant cell lines. Furthermore, co-treatment of cells with glucosamine and LY294002, a specific inhibitor of PI3K, significantly enhanced the anticancer effect of glucosamine in the glucosamine-resistant cell lines, whereas transient inhibition of PTEN by siRNA partially decreased the glucosamine sensitivity in the resistant and sensitive cell lines.
Conclusions: Our results indicate that glucosamine is an effective inhibitor of the IGF-1R/Akt pathway and that glucosamine sensitivity of each cell line was affected by the mutation status of PIK3CA and PTEN.
Citation Format: Ju-Hee Kang, Ki-Hoon Song, Jeong-Seok Nam, Hye-Young Min, Ho-Young Lee, Sung-Dae Cho, Soo-Youl Kim, Seung Hyun Oh. The novel IGF-IR/Akt-dependent anticancer activities of glucosamine are affected by PIK3CA hot-spot mutations and PTEN deletion. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr LB-99. doi:10.1158/1538-7445.AM2013-LB-99
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Affiliation(s)
- Ju-Hee Kang
- 1Chung-Ang University, Ansung, Republic of Korea
| | - Ki-Hoon Song
- 2National Cancer Center, Goyang-si, Republic of Korea
| | | | - Hye-Young Min
- 4Seoul National University, Seoul, Republic of Korea
| | - Ho-Young Lee
- 4Seoul National University, Seoul, Republic of Korea
| | - Sung-Dae Cho
- 5Chungbuk National University, Jeonju, Republic of Korea
| | - Soo-Youl Kim
- 2National Cancer Center, Goyang-si, Republic of Korea
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Jeon SY, Ha SM, Ko DY, Hong JW, Song KH, Kim KH. Phakomatosis pigmentovascularis Ib with left-sided hemihypertrophy, interdigital gaps and scoliosis: a unique case of phakomatosis pigmentovascularis. J Dermatol 2012; 40:78-9. [PMID: 23039104 DOI: 10.1111/j.1346-8138.2012.01677.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Mesangial cell proliferation is one of the main features of chronic renal allograft rejection. One unique feature of fractalkine (CX3CL1) is its existence as both a membrane-tethered and a soluble form. Fractalkine expression is increased in acute and chronic allograft rejection. However, its role in mesangial cell proliferation has not yet been clearly explored. Thus, the present study examined whether fractalkine induced mesangial cell proliferation through production of reactive oxygen species (ROS) and activation of mitogen-activated protein kinase (MAPK), two known mediators of mesangial cell proliferation. Growth-arrested and synchronized mouse mesangial cells were stimulated with fractalkine in the presence versus absence of inhibitors against ROS, extracellular signal-regulated protein kinase (ERK), and p38 MAPK. Cell proliferation was assessed by methylthiazoletetrazolium assay, dichlorofluorescein (DCF)-sensitive cellular ROS production by a fluorometer, and MAPK activation by Western blot analysis. Fractalkine (10-50 ng/mL) significantly increased mesangial cell proliferation at 24 hours in a dose-dependent manner, an effect that was abrogated by the ROS and MAPK inhibitors. Fractalkine (50 ng/mL) also induced cellular ROS production and activation of ERK1/2 and p38 MAPK in mesangial cells. These results demonstrated that fractalkine can induce mesangial cell proliferation through production of cellular ROS and activation of MAPK.
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Affiliation(s)
- J Park
- Department of Bioinspired Science and Division of Life and Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
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Abstract
Fractalkine (CX3CL1) is a unique chemokine that functions not only as a chemokine but also as an adhesion molecule. Fractalkine plays an important role in the recruitment of macrophages into the kidneys by binding to its specific receptor CX3CR1, and renal fractalkine expression was shown to be increased in chronic renal allograft rejection. Considering that microcapillary inflammation is a key feature of chronic renal allograft rejection, the present study examined whether monocytes bind to mesangial cells cultured in the presence of lipopolysaccharide (LPS) through fractalkine/CX3CR1 in order to understand their regulation with respect to inflammation-induced renal allograft dysfunction. Mouse mesangial cells were stimulated with LPS in the presence or absence of fractalkine or CX3CR1 siRNA. Calcein-AM-labeled monocytes were used to evaluate monocyte binding. Fractalkine and CX3CR1 mRNA and protein expression were measured by real-time quantitative polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. LPS at 100 ng/mL significantly increased monocyte binding to mesangial cells. Each siRNA against fractalkine or CX3CR1 effectively inhibited LPS-induced monocyte-mesangial cell binding. Fractalkine and CX3CR1 mRNA expression were enhanced in mesangial cells stimulated with LPS. Fractalkine protein synthesis in media and lysate of mesangial cells were also induced by LPS. These results demonstrated that LPS induces monocyte-mesangial cell binding through the fractalkine/CX3CR1 system and suggested that fractalkine/CX3CR1 system may contribute to renal inflammation leading to chronic renal allograft rejection.
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Affiliation(s)
- J Park
- Department of Bioinspired Science and Division of Life and Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Korea
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Oh SH, Whang YM, Min HY, Han SH, Kang JH, Song KH, Glisson BS, Kim YH, Lee HY. Histone deacetylase inhibitors enhance the apoptotic activity of insulin-like growth factor binding protein-3 by blocking PKC-induced IGFBP-3 degradation. Int J Cancer 2012; 131:2253-63. [PMID: 22362554 DOI: 10.1002/ijc.27509] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 01/11/2012] [Indexed: 11/08/2022]
Abstract
Overexpression of insulin-like growth factor binding protein (IGFBP)-3 induces apoptosis of cancer cells. However, preexisting resistance to IGFBP-3 could limit its antitumor activities. This study characterizes the efficacy and mechanism of the combination of recombinant IGFBP-3 (rIGFBP-3) and HDAC inhibitors to overcome IGFBP-3 resistance in a subset of non-small cell lung cancer (NSCLC) and head and neck squamous cell carcinoma (HNSCC) cells. The effects of the combination of rIGFBP-3 and a number of HDAC inhibitors on cell proliferation and apoptosis were assessed in vitro and in vivo by using the MTT assay, a flow cytometry-based TUNEL assay, Western blot analyses and the NSCLC xenograft tumor model. Combined treatment with HDAC inhibitors and rIGFBP-3 had synergistic antiproliferative effects accompanied by increased apoptosis rates in a subset of NSCLC and HNSCC cell lines in vitro. Moreover, combined treatment with depsipeptide and rIGFBP-3 completely suppressed tumor growth and increased the apoptosis rate in vivo in H1299 NSCLC xenografts. Evidence suggests that HDAC inhibitors increased the half-life of rIGFBP-3 protein by blocking protein kinase C (PKC)-mediated phosphorylation and degradation of rIGFBP-3. In addition, combined treatment of IGFBP-3 with an HDAC inhibitor facilitates apoptosis through upregulation of rIGFBP-3 stability and Akt signaling inhibition. The ability of HDAC inhibitors to decrease PKC activation may enhance apoptotic activities of rIGFBP-3 in NSCLC cells in vitro and in vivo. These results indicated that combined treatment with HDAC inhibitor and rIGFBP-3 could be an effective treatment strategy for NSCLC and HNSCC with highly activated PKC.
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Affiliation(s)
- Seung Hyun Oh
- Laboratory of Preventive Pharmacy, College of Pharmacy, Gachon University, Incheon, Republic of Korea
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Lee KY, Jeon SY, Hong JW, Choi KW, Lee CY, Choi SJ, Kim JH, Song KH, Kim KH. Endothelin-1 enhances the proliferation of normal human melanocytes in a paradoxical manner from the TNF-α-inhibited condition, but tacrolimus promotes exclusively the cellular migration without proliferation: a proposed action mechanism for combination therapy of phototherapy and topical tacrolimus in vitiligo treatment. J Eur Acad Dermatol Venereol 2012; 27:609-16. [PMID: 22404745 DOI: 10.1111/j.1468-3083.2012.04498.x] [Citation(s) in RCA: 23] [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: 11/28/2022]
Abstract
BACKGROUND Vitiligo is an acquired pigmentary disorder caused by the destruction of melanocytes. Two of the major theories regarding the pathogenesis of vitiligo are the autoimmune theory and autocytotoxicity theory, but, the precise pathogenetic mechanism is still not clarified. OBJECTIVES We investigated the effects of ET-1, tacrolimus and tumour necrosis factor-α (TNF-α) on proliferation and migration of cultured normal human melanocytes (NHMs). We also sought to clarify the theoretical rationale underlying the topical tacrolimus monotherapy or tacrolimus-UV combination therapy as tools for vitiligo treatment. METHODS The effects of ET-1, tacrolimus and TNF-α on proliferation/migration of cultured NHMs were investigated by MTT assay/Boyden chamber transwell migration assay. We also examined roles of CXC-chemokine receptor II (CXCR II) and matrix metalloproteinases (MMPs) in such conditions. RESULTS ET-1 exerted a stimulatory effect on melanocyte proliferation and migration, but, tacrolimus exerted a stimulatory effect only on melanocyte migration higher than ET-1. TNF-α inhibited melanocyte proliferation in a dose-dependent manner. Paradoxically, TNF-α-pretreated NHMs exhibited an enhanced proliferative efficiency after being switched to ET-1. We found CXCRII was highly expressed in TNF-α-incubated melanocytes than the agents-free control, and ET-1 treatment after TNF-α preincubation showed the higher levels of CXCRII expression than the condition incubated with TNF-α alone. Moreover, the greater activities of MMP-2 and MMP-9 induced by tacrolimus than ET-1, reflected tacrolimus would enhance migration stimulatory effect in cultured NHMs. CONCLUSIONS Topical tacrolimus can be used an effective agent for vitiligo treatment as monotherapy, maybe due to its migration stimulatory action or TNF-α inhibitory property, and also as a component in combination therapy with UV treatment, considering the more upregulated MMPs activities are induced and the more effective migrations are feasible by itself than ET-1.
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Affiliation(s)
- K Y Lee
- Department of Dermatology, College of Medicine, Dong-A University, Busan, Korea
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Chang YY, Song KH, Yu MR, Yang JK. Removal of arsenic from aqueous solution by iron-coated sand and manganese-coated sand having different mineral types. Water Sci Technol 2012; 65:683-688. [PMID: 22277227 DOI: 10.2166/wst.2012.910] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this study, the effects of the coating temperature during the preparation of manganese-coated sand (MCS) and iron-coated sand (ICS) on the removals of As(III) and As(V) were evaluated. The mineral type of manganese oxide on MCS-150, prepared at 150 °C, was identified as a mixture of pyrolusite and ramsdellite, which changed to high crystalline pyrolusite above 300 °C. The mineral type of ICS-150, prepared at 150 °C, was a mixture of goethite and hematite, which changed to high crystalline goethite above 300 °C. The adsorption efficiency was determined according to the mineral type which depended on the coating temperature. The As(III) oxidation efficiency of MCS-150 and As(V) adsorption efficiency of ICS-150 were approximately 77 and 70% higher compared with those of MCS-600 and ICS-600, respectively, prepared at 600 °C. Regardless of the coating temperature, the amounts of manganese and iron coated on the sand substrates were similar.
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Affiliation(s)
- Yoon-Young Chang
- Department of Environmental Engineering, Kwangwoon University, Seoul, Korea
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Kang JH, Song KH, Woo JK, Park MH, Rhee MH, Choi C, Oh SH. Ginsenoside Rp1 from Panax ginseng exhibits anti-cancer activity by down-regulation of the IGF-1R/Akt pathway in breast cancer cells. Plant Foods Hum Nutr 2011; 66:298-305. [PMID: 21748437 DOI: 10.1007/s11130-011-0242-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Cancer prevention is effective and reduces health care costs because cancer is often a preventable disease that can be affected by lifestyle factors. Therefore, researchers are interested in discovering natural compounds that have anticancer activities, such as delaying the development of cancer and preventing its progression. One such natural agent is ginseng (Panax ginseng), which is traditionally used in some parts of the world as a popular remedy for various diseases including cancer. We hypothesized that the ginsenoside Rp1, a component of ginseng, reduces cancer cell proliferation through inhibition of the insulin-like growth factor 1 receptor (IGF-1R)/Akt pathway. We first tested the efficacy of Rp1 against human breast cancer cell lines. Treatment with Rp1 inhibited breast cancer cell proliferation and inhibited both anchorage-dependent and -independent breast cancer cell colony formation. In addition, treatment with 20 μM Rp1 induced cycle arrest and apoptosis-mediated cell growth suppression. Our findings further indicated that Rp1 decreased the stability of the IGF-1R protein in breast cancer cells. Therefore, we suggest that Rp1 has potential as an anticancer drug and that IGF-1R is an important target for treatment and prevention of breast cancer.
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Affiliation(s)
- Ju-Hee Kang
- Division of Cancer Biology, National Cancer Center, Ilsandong-gu, Goyang-si, Gyeonggi-do, Republic of Korea
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Kang JH, Song KH, Jeong KC, Kim S, Choi C, Lee CH, Oh SH. Involvement of Cox-2 in the metastatic potential of chemotherapy-resistant breast cancer cells. BMC Cancer 2011; 11:334. [PMID: 21813027 PMCID: PMC3199868 DOI: 10.1186/1471-2407-11-334] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 08/04/2011] [Indexed: 02/07/2023] Open
Abstract
Background A major problem with the use of current chemotherapy regimens for several cancers, including breast cancer, is development of intrinsic or acquired drug resistance, which results in disease recurrence and metastasis. However, the mechanisms underlying this drug resistance are unknown. To study the molecular mechanisms underlying the invasive and metastatic activities of drug-resistant cancer cells, we generated a doxorubicin-resistant MCF-7 breast cancer cell line (MCF-7/DOX). Methods We used MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays, flow cytometry assays, DNA fragmentation assays, Western blot analysis, cell invasion assays, small interfering RNA (siRNA) transfection, reverse transcription-polymerase chain reaction, experimental lung metastasis models, and gelatin and fibrinogen/plasminogen zymography to study the molecular mechanism of metastatic activities in MCF-7/DOX cells. Results We found that MCF-7/DOX acquired invasive activities. In addition, Western blot analysis showed increased expression of epidermal growth factor receptor (EGFR) and Cox-2 in MCF-7/DOX cells. Inhibition of Cox-2, phosphoinositide 3-kinase (PI3K)/Akt, or mitogen-activated protein kinase (MAPK) pathways effectively inhibited the invasive activities of MCF-7/DOX cells. Gelatin and fibrinogen/plasminogen zymography analysis showed that the enzymatic activities of matrix metalloproteinase-2 (MMP-2), MMP-9, and urokinase-type plasminogen activator were markedly higher in MCF-7/DOX cells than in the MCF-7 cells. In vitro invasion assays and mouse models of lung metastasis demonstrated that MCF-7/DOX cells acquired invasive abilities. Using siRNAs and agonists specific for prostaglandin E (EP) receptors, we found that EP1 and EP3 played important roles in the invasiveness of MCF-7/DOX cells. Conclusions We found that the invasive activity of MCF-7/DOX cells is mediated by Cox-2, which is induced by the EGFR-activated PI3K/Akt and MAPK pathways. In addition, EP1 and EP3 are important in the Cox-2-induced invasion of MCF-7/DOX cells. Therefore, not only Cox-2 but also EP1 and EP3 could be important targets for chemosensitization and inhibition of metastasis in breast cancers that are resistant to chemotherapy.
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Affiliation(s)
- Ju-Hee Kang
- Division of Cancer Biology, National Cancer Center, Ilsan-ro 323, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Republic of Korea
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Abstract
Fabry's disease is an X-linked lysosomal storage disorder caused by abnormalities in the α-galactosidase A (GLA) gene, which leads to a GLA deficiency and to the intracellular deposition of globotriaosylceramide (Gb3) within vascular endothelium and other tissues. It manifests as progressive multiple organ dysfunctions caused by the deposition of Gb3. On the other hand, congenital agammaglobulinemia is usually caused by mutations in Bruton's tyrosine kinase (Btk) gene with X-linked dominence, suppresses B cell maturation, and causes recurrent pyogenic infections. In former reports, the distance between the loci in the Xq22 region of the human X chromosome was found to be about 69 kilobases. A 23-yr-old man diagnosed with congenital agammaglobulinemia at age 5, showed typical clinical and laboratory and histopathological findings of Fabry's disease. The genetic basis of this combination of the two syndromes was studied in this patient. Here, we report a case of Fabry's disease with congenital agammaglobulinemia.
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Affiliation(s)
- Ki-Yeol Lee
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Su-Young Jeon
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Jin-Woo Hong
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Sung-Eun Kim
- Department of Nephrology, Dong-A University College of Medicine, Busan, Korea
| | | | - Young-Hun Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
| | - Ki-Ho Kim
- Department of Dermatology, Dong-A University College of Medicine, Busan, Korea
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