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Oh DY, Seo SB, Jang YJ, Park EJ, Kim KH. Facial Skin Rejuvenation Using Poly-dl-Lactic Acid Injected With a Laser-Generated Needle-Free Microjet Injector. Dermatol Surg 2024:00042728-990000000-00763. [PMID: 38630596 DOI: 10.1097/dss.0000000000004195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
BACKGROUND A laser-induced needle-free microjet injector was developed for rapid, high-speed drug delivery of microliters into the skin. OBJECTIVE This study evaluated the clinical rejuvenation effect of repeated dermal injections of the collagen simulator poly-dl-lactic acid (PDLA) using a laser-induced needle-free microjet injector. METHODS Five PDLA injection sessions using a laser-induced needle-free microjet injector were conducted in patients concerned about aging skin. Facial uplifting, darkness, redness, roughness, pore size, subjective satisfaction, and side effects were evaluated before each session and 4 weeks after treatment completion. Histological evaluation was also performed with immunohistochemical staining of collagen and elastic fibers. RESULTS The clinical results of 27 female patients were evaluated. The treatment resulted in a noticeable skin surface uplifting (0.711 ± 0.42 mm) and significant improvements in darkness (p = .013), redness (p = .009), and roughness (p = .036), with no significant difference in the pore size (p = .770). Patients were reported being satisfied with the overall therapeutic effects, despite mild and tolerable adverse effects. Histological findings revealed growth and thickening of collagen and elastic fibers, with marked increase in collagen I and III levels. CONCLUSION Repeated dermal injections of PDLA using a laser-induced microjet injector offer excellent drug delivery, achieving high efficacy in skin rejuvenation, patient satisfaction, and safety.
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Affiliation(s)
- Dong Yeol Oh
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | | | - Ye Ji Jang
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
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Baek EJ, Jung DY, Seung NR, Jang YJ, Park EJ, Kim KH. Immunohistochemical differentiation of keratins and involucrin between palmar psoriasis, chronic hand eczema and hyperkeratotic hand eczema. Contact Dermatitis 2024; 90:385-393. [PMID: 38205911 DOI: 10.1111/cod.14499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/30/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024]
Abstract
BACKGROUND Common hyperkeratotic palmar skin lesions include chronic hand eczema (CHE), hyperkeratotic hand eczema (HHE), palmar psoriasis (PP). However, clinically differentiating these disorders is often challenging. OBJECTIVES To compare the expressions of keratin (K) 5, K9, K14 and involucrin in palmar hyperkeratotic lesions (HHE, CHE and PP). MATERIALS AND METHODS Immunohistochemical staining was performed on skin biopsy specimens obtained from the palms of patients clinically diagnosed with CHE, HHE and PP (n = 21, 24 and 18, respectively). RESULTS K5 and K14 expression levels were higher in the spinous and granular layers of PP and HHE compared to CHE. Involucrin was expressed in the basal layer of PP and HHE but not in CHE. K9 expression was decreased in PP and HHE compared to CHE. CONCLUSION Keratin and involucrin expression in the epidermis are markers of keratinocyte differentiation. Expression levels of keratin and involucrin were similar between the HHE and PP groups, suggesting that HHE shares pathogenesis with PP rather than CHE.
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Affiliation(s)
- Eun Joo Baek
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Da Yeon Jung
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | | | - Ye Ji Jang
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
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Jung D, Seung NR, Seo SB, Park EJ, Kim KH. Skin rejuvenation through topical application of indocyanine green with diffractive optical element mode of 785 nm picosecond laser in Asian females. J Cosmet Dermatol 2024. [PMID: 38494897 DOI: 10.1111/jocd.16275] [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: 11/17/2023] [Revised: 02/09/2024] [Accepted: 03/01/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND Indocyanine green (ICG) exhibits robust absorption near 800 nm. AIMS To examine the clinical effects of combining ICG with a 785 nm picosecond laser for treating photo-aged skin. PATIENT/METHODS A 785 nm 600 picosecond laser was used on the facial area of 16 female patients with Fitzpatrick skin type III and IV (mean age: 58.44 ± 5.24 years) after applying 0.0125% ICG cream. A total of 3000 shots were administered in diffractive optical element mode at a pulse energy of 200 mJ and frequency of 10 Hz. Hyperpigmented lesions were treated using the Zoom handpiece set at a spot size of 3-4 mm, pulse energy of 60-120 mJ, and frequency of 3-7 Hz. Patients underwent five sessions of treatment at intervals of 1-2 weeks. Wrinkles, pores and pigmented lesions were assessed at the initial assessment and 4 weeks after the final treatment using the Modified Fitzpatrick Wrinkle Scale and 10-point visual analog scale, respectively. Skin biopsy of the postauricular area was performed on two consenting patients. RESULTS Significant improvements in wrinkles (p = 0.02), pores (p = 0.034), and hyperpigmentation (p = 0.036) were observed, along with increased patient subjective improvement. Adverse effects were transient and well-tolerated. Hematoxylin and eosin and Masson's trichrome staining revealed increased and thickened dermal collagen fibers. Immunohistochemical staining revealed increased expression of collagen I and III throughout the papillary and upper reticular dermis, along with diffuse increase of STRO-1 in the dermis. CONCLUSIONS The combined application of a 785 nm picosecond laser and ICG yielded promising clinical outcomes for treating photo-aged skin in Asian patients with Fitzpatrick skin type III and IV.
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Affiliation(s)
- Dayeon Jung
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | | | | | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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Kim KH, Lévesque C, Malkhassian G, Basrani B. Efficacy of the GentleWave System in the removal of biofilm from the mesial roots of mandibular molars before and after minimal instrumentation: An ex vivo study. Int Endod J 2024. [PMID: 38374488 DOI: 10.1111/iej.14044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/29/2024] [Indexed: 02/21/2024]
Abstract
AIM To compare the efficacy of Enterococcus faecalis biofilm removal using the GentleWave System (GWS) (Sonendo Inc, CA) on non-instrumented versus minimally instrumented root canal systems. METHODOLOGY Thirty-four mandibular molars were autoclaved and allocated to four groups: Negative control (n = 5); positive control (n = 5); Group 1: non-instrumentation + GWS (NI + GWS) (n = 12); and Group 2: minimal instrumentation + GWS (MI + GWS) (n = 12). Of 34 samples, 24 samples with Vertucci type 2 configuration within the mesial root of each sample were allocated to Groups 1 and 2 and then matched based on the working length and root canal configuration. After inoculation of samples with E. faecalis for 3 weeks, the GWS was used on Group 1 without any instrumentation and Group 2 after instrumentation of mesial canals until size 20/06v. CFU and SEM analysis were used. RESULTS Log10 (CFU/mL) from the positive control, and Group 1 and 2 were 7.41 ± 0.53, 3.41 ± 1.54, and 3.21 ± 1.54, respectively. Both groups showed a statistically significant difference in the reduction of viable E. faecalis cells compared to the positive control (Group 1 [p = .0001] and Group 2 [p < .0001]), whilst showing no significant difference between the two tested groups (p < .05). CONCLUSION The use of GWS on the non-instrumented root canal system could be an effective disinfection protocol in removing the biofilm without dentin debris formation.
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Affiliation(s)
- Kwang Ho Kim
- Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Céline Lévesque
- Microbiology, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Gevik Malkhassian
- Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Bettina Basrani
- Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
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Ha GS, Rashid MAM, Oh DH, Ha JM, Yoo CJ, Jeon BH, Koo B, Jeong K, Kim KH. Integrating experimental and computational approaches for deep eutectic solvent-catalyzed glycolysis of post-consumer polyethylene terephthalate. Waste Manag 2024; 174:411-419. [PMID: 38103351 DOI: 10.1016/j.wasman.2023.12.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 11/21/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
To achieve a sustainable and circular economy, developing effective plastic recycling methods is essential. Despite advances in the chemical recycling of plastic waste, modern industries require highly efficient and sustainable solutions to address environmental problems. In this study, we propose an efficient glycolysis strategy for post-consumer polyethylene terephthalate (PET) using deep eutectic solvents (DESs) to produce bis(2-hydroxyethyl) terephthalate (BHET) with high selectivity. Choline chloride (ChCl)- and urea-based DESs were synthesized using various metal salts and were tested for the glycolysis of PET waste; ChCl-Zn(OAc)2 exhibited the best performance. The DES-containing solvent system afforded a complete PET conversion, producing BHET at a high yield (91.6%) under optimal reaction conditions. The degradation mechanism of PET and its interaction with DESs were systematically investigated using density functional theory-based calculations. Furthermore, an intuitive machine learning model was developed to predict the PET conversion and BHET selectivity for different DES compositions. Our findings demonstrate that the DES-catalyzed glycolysis of post-consumer PET could enable the development of a sustainable chemical recycling process, providing insights to identify the new design of DESs for plastic decomposition.
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Affiliation(s)
- Geon-Soo Ha
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Md Al Mamunur Rashid
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Da Hae Oh
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Jeong-Myeong Ha
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Chun-Jae Yoo
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Bonwook Koo
- School of Forestry Sciences and Landscape Architecture, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Keunhong Jeong
- Department of Chemistry, Korea Military Academy, Seoul 01805, Republic of Korea.
| | - Kwang Ho Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Yang DH, Chu YS, Okello OFN, Seo SY, Moon G, Kim KH, Jo MH, Shin D, Mizoguchi T, Yang S, Choi SY. Full automation of point defect detection in transition metal dichalcogenides through a dual mode deep learning algorithm. Mater Horiz 2024; 11:747-757. [PMID: 37990857 DOI: 10.1039/d3mh01500a] [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] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Point defects often appear in two-dimensional (2D) materials and are mostly correlated with physical phenomena. The direct visualisation of point defects, followed by statistical inspection, is the most promising way to harness structure-modulated 2D materials. Here, we introduce a deep learning-based platform to identify the point defects in 2H-MoTe2: synergy of unit cell detection and defect classification. These processes demonstrate that segmenting the detected hexagonal cell into two unit cells elaborately cropped the unit cells: further separating a unit cell input into the Te2/Mo column part remarkably increased the defect classification accuracies. The concentrations of identified point defects were 7.16 × 1020 cm2 of Te monovacancies, 4.38 × 1019 cm2 of Te divacancies and 1.46 × 1019 cm2 of Mo monovacancies generated during an exfoliation process for TEM sample-preparation. These revealed defects correspond to the n-type character mainly originating from Te monovacancies, statistically. Our deep learning-oriented platform combined with atomic structural imaging provides the most intuitive and precise way to analyse point defects and, consequently, insight into the defect-property correlation based on deep learning in 2D materials.
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Affiliation(s)
- Dong-Hwan Yang
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
- Center for van der Waals Quantum Solids, Institute of Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
| | - Yu-Seong Chu
- Division of Biomedical Engineering, College of Health Sciences, Yonsei University, 1, Yeonsedae-gil, Heungeop-myeon, Wonju-si, Gangwon-do, 26493, Republic of Korea
| | - Odongo Francis Ngome Okello
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
| | - Seung-Young Seo
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
| | - Gunho Moon
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
- Center for van der Waals Quantum Solids, Institute of Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
| | - Kwang Ho Kim
- Department of Materials Science and Engineering, Pusan National University (PNU), 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, 46241, Busan, Republic of Korea
| | - Moon-Ho Jo
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
- Center for van der Waals Quantum Solids, Institute of Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
| | - Dongwon Shin
- Materials Science and Technology Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN 37831, USA
| | - Teruyasu Mizoguchi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 15308505, Japan
| | - Sejung Yang
- Department of Precision Medicine, Yonsei University Wonju College of Medicine, 20, Ilsan-ro, Wonju-si, Gangwon-do, Republic of Korea.
| | - Si-Young Choi
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 37673, Republic of Korea.
- Center for van der Waals Quantum Solids, Institute of Basic Science (IBS), 77 Cheongam-Ro, Pohang 37673, Republic of Korea
- Department of Semiconductor Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang, 37673, Republic of Korea
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Ha GS, Al Mamunur Rashid M, Ha JM, Yoo CJ, Jeon BH, Jeong K, Kim KH. Enhancing polyethylene terephthalate conversion through efficient microwave-assisted deep eutectic solvent-catalyzed glycolysis. Chemosphere 2024; 349:140781. [PMID: 38006913 DOI: 10.1016/j.chemosphere.2023.140781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/01/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
Chemical recycling of plastics is a promising approach for effectively depolymerizing plastic waste into its constituent monomers, thereby contributing to the realization of a sustainable circular economy. Glycolysis, which converts polyethylene terephthalate (PET) into the monomer bis(2-hydroxyethyl) terephthalate (BHET), has emerged as a cost-effective and commercially viable chemical recycling process. However, glycolysis requires long reaction times and high energy consumption, limiting its industrialization. In this study, we develop an energy-efficient microwave-assisted deep eutectic solvent-catalyzed glycolysis method to degrade PET effectively and rapidly, resulting in a high BHET yield. This combined approach enables the quantitative degradation of PET within 9 min, achieving a high BHET yield of approximately 99% under optimal reaction conditions. Furthermore, the proposed approach has a low specific energy consumption (45 kJ/g) and minimizes waste generation. The thermal behavior of PET and its degradation mechanism are systematically investigated using scanning electron microscopy and density functional theory-based calculations. The results obtained suggest that the proposed straightforward, swift, and energy-efficient strategy has the potential to offer a sustainable solution to plastic waste management challenges and expedite the industrialization of chemical recycling.
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Affiliation(s)
- Geon-Soo Ha
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Md Al Mamunur Rashid
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Jeong-Myeong Ha
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; Division of Energy and Environment Technology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Chun-Jae Yoo
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Byong-Hun Jeon
- Department of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Keunhong Jeong
- Department of Chemistry, Korea Military Academy, Seoul, 01805, Republic of Korea
| | - Kwang Ho Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea; KIST-SKKU Carbon-Neutral Research Center, Sungkyunkwan University, Suwon, 16419, Republic of Korea; School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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Kim HK, Kim HS, Noh GT, Nam JH, Chung SS, Kim KH, Lee RA. Is restrictive transfusion sufficient in colorectal cancer surgery? A retrospective study before and during the COVID-19 pandemic in Korea. Ann Coloproctol 2023; 39:493-501. [PMID: 38185948 PMCID: PMC10781603 DOI: 10.3393/ac.2023.00437.0062] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 01/09/2024] Open
Abstract
PURPOSE Blood transfusion is one of the most common procedures used to treat anemia in colorectal surgery. Despite controversy regarding the adverse effects of blood products, surgeons have maintained standards for administering blood transfusions. However, this trend was restrictive during the COVID-19 pandemic because of a shortage of blood products. In this study, we conducted an analysis to investigate whether the restriction of blood transfusions affected postoperative surgical outcomes. METHODS Medical records of 318 patients who underwent surgery for colon and rectal cancer at Ewha Womans University Mokdong Hospital between June 2018 and March 2022 were reviewed retrospectively. The surgical outcomes between the liberal and restrictive transfusion strategies in pre- and post-COVID-19 groups were analyzed. RESULTS In univariate analysis, postoperative transfusion was associated with infectious complications (odds ratio [OR], 1.705; 95% confidence interval [CI], 1.015-2.865; P=0.044). However, postoperative transfusion was not an independent risk factor for the development of infectious complications in multivariate analysis (OR, 1.305; 95% CI, 0.749-2.274; P=0.348). In subgroup analysis, there was no significant association between infectious complications and the hemoglobin threshold level for the administration of a transfusion (OR, 1.249; 95% CI, 0.928-1.682; P=0.142). CONCLUSION During colorectal surgery, the decision to perform a blood transfusion is an important step in ensuring favorable surgical outcomes. According to the results of this study, restrictive transfusion is sufficient for favorable surgical outcomes compared with liberal transfusion. Therefore, modification of guidelines is suggested to minimize unnecessary transfusion-related side effects and prevent the overuse of blood products.
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Affiliation(s)
- Hyeon Kyeong Kim
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Ho Seung Kim
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Gyoung Tae Noh
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Jin Hoon Nam
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Soon Sup Chung
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kwang Ho Kim
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Ryung-Ah Lee
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
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Jung D, Ko SM, Seo J, Park EJ, Kim KJ, Kim KH. A rare case of chordoma cutis. J Cutan Pathol 2023; 50:951-955. [PMID: 37654082 DOI: 10.1111/cup.14525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 07/15/2023] [Accepted: 08/21/2023] [Indexed: 09/02/2023]
Abstract
Chordoma is a rare locally aggressive bone malignancy that originates from the notochord. It typically involves the sacrococcygeal area, spheno-occipital region of the skull, and spine. Cutaneous involvement of chordoma, termed as chordoma cutis, is uncommon and usually occurs via direct invasion or local recurrence. Distant metastasis to the skin is very rare. We report a case of chordoma cutis on the scalp, which lacked characteristic physaliferous cells but tested positive for brachyury, thus supporting the diagnosis of chordoma cutis. The patient, who presented with a solitary translucent nodule on the scalp, was previously diagnosed with chordoma on the vertebral column and skull 8 months prior. Microscopic examination showed a cord-like arrangement of plasmacytoid cells within a myxoid stroma. Physaliferous cells were not observed, and cytokeratin AE1/AE3 staining was negative; however, brachyury and epithelial membrane antigen staining was positive, leading to the diagnosis of chordoma cutis. Therefore, clinicians must include chordoma cutis in the differential diagnosis of translucent nodular lesions on the skin of patients formerly diagnosed with chordoma.
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Affiliation(s)
- Dayeon Jung
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Seung Min Ko
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Jinwon Seo
- Department of Pathology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
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Hyeong JH, Jeong SH, Park EJ, Kim KJ, Kim KH. A Case of Breast Carcinoma en Cuirasse in Male. Ann Dermatol 2023; 35:S323-S326. [PMID: 38061731 PMCID: PMC10727906 DOI: 10.5021/ad.22.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 08/04/2022] [Accepted: 01/20/2023] [Indexed: 12/20/2023] Open
Abstract
A 63-year-old male presented with a painful skin lesion on the left side of the neck and upper chest approximately two months prior to presentation. Diffuse erythematous to purplish-colored sclerotic patches were observed. He had been treated with intravenous antibiotics for two weeks for cellulitis, but the lesion did not improve. Punch biopsy, and neck computed tomography (CT) with contrast enhancement were performed to differentiate between cellulitis and scleroderma. Histopathological examination revealed infiltration of pleomorphic and poorly differentiated tumor cells extending into thickened collagen bundles, and mitotic activity. Based on histologic and radiologic findings, the patient was suspected to have poorly differentiated carcinoma, and further evaluation of the origin of the carcinoma was performed. A subareolar mass on the left breast was observed on chest CT, and a needle biopsy was performed; results were consistent with findings from the skin biopsy. Finally, the patient was diagnosed with carcinoma en cuirasse, a subtype of cutaneous metastasis of breast cancer, was transferred to oncology, and underwent palliative chemotherapy.
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Affiliation(s)
- Jin Hyeok Hyeong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Soo Hyun Jeong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea.
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Heo EJ, Kim M, Park CG, Chang KH, Kim KH, Shim JB, Park YJ, Kim CY, Lee NK, Lee S. The Feasibility of Fast, Four-Dimensional Computed Tomography-Based O-Ring Linac Plans for Stereotactic Body Radiotherapy in Patients with Poor Performance Status. Int J Radiat Oncol Biol Phys 2023; 117:e672. [PMID: 37785984 DOI: 10.1016/j.ijrobp.2023.06.2120] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) As patients with poor performance status cannot endure long treatment times, it can lead to unplanned and prolonged radiation treatment or discontinuation of treatment. Moreover, prolonged radiation treatment appears to negatively affect survival for patients. We aimed to verify the feasibility of fast 4DCT-based O-ring linear accelerator (LINAC) treatment in lung 4D stereotactic body radiotherapy (SBRT). MATERIALS/METHODS This study included data of 38 patients who received lung 4D-SBRT. Gating20-70% plans were based on 4DCT data obtained at phase values ranging from 20-70% using a C-arm LINAC. Non-GatingFB plans were retrospectively established based on 4DCT data obtained at phase values of 0-90% using an O-ring LINAC. The prescribed dose of 4,800 cGy was delivered to PTV in four fractions. The conformity index (CI), homogeneity index (HI), and gradient measurement (GM) of the PTV were analyzed to compare dosimetric data between Gating20-70% and Non-GatingFB plans. Organs at risks (OARs) were analyzed in accordance with the RTOG 0915 protocol. Treatment delivery time and total monitor units (MU) were analyzed to compare the efficiency of treatment delivery. Statistical comparisons were performed using the Wilcoxon signed-rank test (p<0.05). RESULTS For the PTV, there was no significant difference in the CI or HI between Gating20-70% and Non-GatingFB plans (CI: 1.337±0.137, 1.335±0.174, HI: 0.939±0.015, 0.939±0.016, all at p>0.05). However, there was a significant difference in GM between Gating20-70% and Non-GatingFB plan (1.528±0.206 cm, 1.381±0.222 cm, p<0.001). For OARs, all plans met the criteria for dose constraint. There was a significant difference between Gating20-70% and Non-GatingFB plans except in the spinal cord. In particular, D1000cc and D1500cc values for the ipsilateral lung for Gating20-70% plans were 31.6% and 59.9% lower than those for Non-GatingFB plans (D1000cc: 50.780±132.061 cGy, 34.755±102.480 cGy, p<0.001, D1500cc: 6.641±14.598 cGy, 2.666±7.926 cGy, p<0.001). Treatment delivery time was 92% longer for Gating20-70% plans than for Non-GatingFB plans (5.0±0.4 min, 9.6±3.3 min, p = 0.043). The total MU value for Gating20-70% plans was 9.6% higher than that for Non-GatingFB plans (3665.8±230.7, 4016±236.9, p = 0.039). CONCLUSION When compared to OARs both plans were acceptable per RTOG-0915 protocol, but significant differences were between Non-GatingFB and Gating20-70% plans. However, treatment delivery time of Non-GatingFB plans decreased by 47.9% than Gating20-70% plans. We verified the feasibility of fast 4DCT-based O-ring LINAC treatment for patients who cannot endure long treatment times due to poor performance status in lung 4D-SBRT. In further study, we will analyze dosimetric differences and treatment delivery efficiency considering tumor motion according to tumor location.
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Affiliation(s)
- E J Heo
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea; Department of Bio-medical Science, Graduate School of Korea University, Sejong, Korea, Republic of (South) Korea
| | - M Kim
- Department of Biostatistics and Computing, Yonsei University Graduate school, Seoul, Korea, Republic of (South) Korea
| | - C G Park
- Department of Mathematics, Kyonggi University, Gyeonggi, Korea, Republic of (South) Korea
| | - K H Chang
- Department of Radiologic Science, Far East University, Chungcheongbuk-do, Korea, Republic of (South) Korea
| | - K H Kim
- Department of Neurosurgery, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea, Republic of (South) Korea
| | - J B Shim
- Department of Radiation Oncology, Guro Hospital, Korea University Medical Center, Seoul, Korea, Republic of (South) Korea
| | - Y J Park
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - C Y Kim
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - N K Lee
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - S Lee
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
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Choi H, Lee JG, Kim J, Byun HK, Kim KH, Koom WS, Cho JH, Lee IJ. Mapping the Anatomical Distribution of MRI-Identified Locoregional Recurrence following Robotic-Assisted Laparoscopic Prostatectomy for Prostate Adenocarcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e373. [PMID: 37785270 DOI: 10.1016/j.ijrobp.2023.06.2475] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The pattern of locoregional recurrence specifically after robotic-assisted laparoscopic prostatectomy (RALP) for prostate adenocarcinoma is still unknown. In this study, we reviewed pelvic magnetic resonance images (MRI) after postoperative biochemical recurrence (BCR) and drew a map of locoregional recurrence to support evidence of determining the optimal target volume of salvage radiotherapy in a post-RALP BCR scenario. MATERIALS/METHODS We have retrospectively searched 7,583 prostate adenocarcinoma patients who have received RALP in our institution between January 2010 and December 2021, and found a pool of highly selected patients with gross tumor recurrence confirmed by post-BCR pelvic MRIs and did not have other histories of malignancy. BCR was defined as the serum PSA more or equal to 0.2 ng/mL, or three consecutive increases. Patients with serum PSA nadir more or equal to 0.2 ng/mL on the 90th postoperative day (POD 90) were excluded to guarantee successful tumor removal. We have reviewed serum PSA levels using R codes, MRI and pathological reports using Excel, and descriptive statistics using SPSS 25. The gross lesions were contoured on the correlating MRIs using MIM Maestro 7.1. The RT structure DICOM files were merged into a map using MATLAB 2022b. In addition, we have conducted Fisher exacted test, Mann-Whitney U test, and logistic regression to identify risk factors for regional recurrence. RESULTS A total of 173 patients were identified with locoregional recurrence from post-BCR pelvic MRIs, and 139 (80.3%) patients were in the high-risk group or very-high-risk group according to the NCCN guidelines: 57 (32.9%) patients with histological grade group 5, 50 (28.9%) patients with initial PSA over 20 ng/mL, 114 (65.9%) patients with extracapsular extension, 55 (31.8%) patients with seminal vesicle invasion, and 15 (9%) patients with pN1. The median follow-up was 4.7 (IQR 2.8-6.9) years for pelvic MRIs and 5.8 (IQR 4.0-8.6) years for serum PSA. The BCF survival was median of 10.7 (IQR 4.6-19.1) months, and the locoregional recurrence-free survival was median of 24.6 (IQR 9.7-49.4) months for this subgroup of patients. At first locoregional recurrence, 148 (85.5%) patients were local only, 20 (11.6%) patients were regional only, and 5 (2.9%) patients were both local and regional. Out of the 25 patients with regional recurrence, the incidence of gross tumor recurrence differed by nodal sites: 3 (12%) in perirectal space, 5 (20%) in internal iliac, 7 (28%) in obturator, 13 (52%) in external iliac, and 6 (24%) in common iliac lymph nodes. CONCLUSION We have found 173 patients and were able to map reliable gross tumor recurrence sites after RALP and confirmed by pelvic MRIs following BCR. The map supports evidence of using the existing consensus pelvic clinical target volume of salvage radiotherapy, in a post-RALP BCR scenario.
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Affiliation(s)
- H Choi
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H K Byun
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K H Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - W S Koom
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Cho
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Yang G, Yoon HI, Lee JG, Kim J, Kim J, Kim KH. Prediction of Lymphopenia and Survival with Baseline Absolute Lymphocyte Count and Irradiated Dose to Immune Cells in Patients with Non-Small Cell Lung Cancer Treated with Concurrent Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e77-e78. [PMID: 37786176 DOI: 10.1016/j.ijrobp.2023.06.818] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aimed to investigate the effect of effective dose to immune cell (EDIC) combined with pre-radiotherapy (RT) absolute lymphocyte count (ALC) on treatment-related lymphopenia during RT and treatment outcome in patients with locally advanced non-small cell lung cancer (NSCLC). A subgroup analysis in patients who received consolidation immunotherapy was also conducted. MATERIALS/METHODS Between August 2008 and December 2021, 517 patients with locally advanced NSCLC treated with definitive concurrent chemoradiotherapy (CRT) were retrospectively analyzed. All patients had serial complete-blood-count tests at pre-, and during-CRT. Severe lymphopenia was defined as ALC < 0.5x109cells/L during RT. EDIC was calculated according to mean doses of the lung, heart and the total body. The patients were grouped according to high and low EDIC and pre-RT ALC and was assessed for its correlation with radiation induced lymphopenia and survival outcomes. RESULTS Of 517 eligible patients, most of the patients received weekly paclitaxel with carboplatin (90.3%) and 195 patients (37.7%) received consolidation immunotherapy following CRT. A median radiation dose of 63 Gy (IQR, 60-64.5) was delivered in 30 fractions. The optimal cutoff value of EDIC and pre-RT ALC for predicting severe lymphopenia were 2.89 Gy and 2.03x109cells/L, respectively. High risk group was defined as EDIC ≥ 2.89 Gy and pre-RT ALC < 2.03x109cells/L, low risk group as EDIC <2.89 Gy and pre-RT ALC ≥ 2.03x109cells/L, and intermediate group as EDIC ≥ 2.89 Gy and pre-RT ALC ≥ 2.03x109cells/L or EDIC < 2.89 Gy and pre-RT ALC < 2.03x109cells/L. The incidence of severe lymphopenia during RT in high, intermediate, and low risk group was 90.1%, 77.1%, and 52.3%, respectively (p<0.001). The risk groups were independent predictors for both progression-free survival (PFS) (p<0.001) and overall survival (OS) (p<0.001). The high-risk group had higher incidence of locoregional and distant recurrences (p<0.001). In the subset of patients who were treated with consolidation immunotherapy, the risk groups were predictive of severe lymphopenia (p = 0.001), PFS (p = 0.004), and OS (p = 0.012). CONCLUSION This study demonstrated that the combination of EDIC and pre-RT ALC is a predictor for severe lymphopenia during RT, recurrence, and survival in patients with locally advanced NSCLC who received CRT. Moreover, the combination of EDIC and pre-RT ALC may serve as a potential biomarker for the benefit of maintenance immunotherapy.
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Affiliation(s)
- G Yang
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H I Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K H Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Shin SM, Baek EJ, Kim KH, Kim KJ, Park EJ. Polydeoxyribonucleotide exerts opposing effects on ERK activity in human skin keratinocytes and fibroblasts. Mol Med Rep 2023; 28:148. [PMID: 37350391 DOI: 10.3892/mmr.2023.13035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/26/2023] [Indexed: 06/24/2023] Open
Abstract
Polydeoxyribonucleotide (PDRN) is a mixture of deoxyribonucleotides. It serves as an anti‑inflammatory and tissue‑regenerating agent. The mitogen‑activated protein kinase pathway modulates cell growth and collagen accumulation. It also regulates inflammation by suppressing the expression of proinflammatory cytokines. In the present study, it was attempted to elucidate the molecular mechanism of PDRN in skin healing by confirming the effects of PDRN treatment on skin keratinocytes and fibroblasts, and by assessing the levels of collagen and inflammatory cytokines regulated by the extracellular signal‑regulated kinase (ERK) pathway. The potential effects of PDRN on skin regeneration were investigated. Fibroblast and keratinocyte proliferation and migration were analyzed using the water‑soluble tetrazolium‑8 and wound healing assays. The upregulation of collagen synthesis by PDRN‑induced ERK activation was analyzed in fibroblasts with or without an ERK inhibitor. Inflammatory cytokine expression levels in keratinocytes were determined using reverse transcription‑quantitative polymerase chain reaction. PDRN promoted the proliferation and migration of keratinocytes and fibroblasts. However, PDRN‑induced ERK phosphorylation differed between keratinocytes and fibroblasts; PDRN increased ERK phosphorylation and collagen accumulation in fibroblasts, while it inhibited matrix metalloproteinase expression. By contrast, PDRN inhibited ERK phosphorylation in keratinocytes, and it decreased inflammatory cytokine expression levels. PDRN affects skin cell proliferation and migration, and collagen and inflammatory cytokine expression levels via ERK signaling. Overall, PDRN exerts a positive effect on skin regeneration, but the mechanism by which it promotes skin regeneration varies among different skin cell types.
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Affiliation(s)
- Sun Mee Shin
- Department of Dermatology, Hallym Institute for Translational Medicine, Anyang, Gyeonggi 14054, Republic of Korea
| | - Eun Joo Baek
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi 14068, Republic of Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi 14068, Republic of Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi 14068, Republic of Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi 14068, Republic of Korea
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Kim HS, Kim KH, Noh GT, Lee RA, Chung SS. Body composition index obtained by using a bioelectrical impedance analysis device can be a predictor of prolonged operative time in patients undergoing minimally invasive colorectal surgery. Ann Coloproctol 2023; 39:342-350. [PMID: 35655396 PMCID: PMC10475805 DOI: 10.3393/ac.2022.00262.0037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 10/18/2022] Open
Abstract
PURPOSE Obesity has been known to contribute to technical difficulties in surgery. Until now, body mass index (BMI) has been used to measure obesity. However, there are reports that BMI does not always correspond to the visceral fat. Recently, bioelectrical impedance analysis (BIA) has been used for body composition analysis. This study aimed to evaluate the usefulness of the body composition index obtained using a BIA device in predicting short-term postoperative outcomes. METHODS Data of patients who underwent elective major colorectal surgery using minimally invasive techniques were reviewed retrospectively. Body composition status was recorded using a commercial BIA device the day before surgery. The relationship between BMI, body composition index, and short-term postoperative outcomes, including operative time, was analyzed. RESULTS Sixty-six patients were enrolled in this study. In the correlation analysis, positive correlation was observed between BMI and body composition index. BMI and body composition index were not associated with short-term postoperative outcomes. Percent body fat (odds ratio, 4.226; 95% confidence interval [CI], 1.064-16.780; P=0.041) was found to be a statistically significant factor of prolonged operative time in the multivariate analysis. Correlation analysis showed that body fat mass was related to prolonged operative time (correlation coefficients, 0.245; P=0.048). In the area under curve analysis, body fat mass showed a statistically significant predictive probability for prolonged operative time (body fat mass: area, 0.662; 95% CI, 0.531-0.764; P=0.024). CONCLUSION The body composition index can be used as a predictive marker for prolonged operative time. Further studies are needed to determine its usefulness.
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Affiliation(s)
- Ho Seung Kim
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kwang Ho Kim
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Gyoung Tae Noh
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Ryung-Ah Lee
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
| | - Soon Sup Chung
- Department of Surgery, Ewha Womans University College of Medicine, Seoul, Korea
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16
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Kim HS, Oh BY, Cheong C, Park MH, Chung SS, Lee RA, Kim KH, Noh GT. Single-incision robotic colorectal surgery with the da Vinci SP® surgical system: initial results of 50 cases. Tech Coloproctol 2023; 27:589-599. [PMID: 36971849 DOI: 10.1007/s10151-023-02791-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/14/2023] [Indexed: 06/06/2023]
Abstract
PURPOSE The da Vinci SP® (dVSP) surgical system (Intuitive Surgical, Sunnyvale, CA, USA), a robotic platform designed for single-incision surgery, overcame the need for multiple ports in traditional robotic surgery and issues including triangulation and retraction in single-incision laparoscopic surgery. However, previous studies only included case reports or series with small sample sizes. The aim of this study was to assess the safety and performance of the dVSP surgical system and its instruments and accessories for colorectal procedures. METHODS The medical records of patients who had surgery with the dVSP from March 2019 to September 2021 at Ewha Womans University Seoul Hospital were investigated. The pathologic and follow-up data of patients who had malignant tumors were analyzed separately to evaluate oncological safety. RESULTS Fifty patients (26 male and 24 female) with a median age of 59 years (interquartile range 52.5-63.0 years) were enrolled. The procedures included low anterior resection with total mesorectal excision (n = 16), sigmoid colectomy with complete mesocolic excision and central vessel ligation (CME + CVL) (n = 14), right colectomy with CME + CVL (n = 9), left colectomy with CME + CVL (n = 4), right colectomy (n = 6), and sigmoid colectomy (n = 1). Operative time significantly decreased after 25 cases (early phase vs. late phase; operative time 295.0 min vs. 250.0 min, p = 0.015; docking time 16.0 min vs. 12.0 min, p = 0.001; console time 212.0 min vs. 190.0 min, p = 0.019). Planned procedures were successfully completed in all patients. Postoperative outcomes were acceptable with only six cases of mild adverse events through a 3-month follow-up. No local recurrence and only one case of systemic recurrence occurred within 1 year postoperatively. CONCLUSIONS This study demonstrated the surgical and oncological safety and feasibility of dVSP, which may be a novel surgical platform for colorectal surgery.
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Affiliation(s)
- H S Kim
- Department of Surgery, Ewha Womans University College of Medicine, 260, Gonghang-Daero, Gangseo-Gu, Seoul, 07804, South Korea
| | - B-Y Oh
- Department of Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, South Korea
| | - C Cheong
- Department of Surgery, Korea University Guro Hospital, Korea University College of Medicine, Seoul, South Korea
| | - M H Park
- Ewha Womans University Seoul Hospital, Seoul, South Korea
| | - S S Chung
- Department of Surgery, Ewha Womans University College of Medicine, 260, Gonghang-Daero, Gangseo-Gu, Seoul, 07804, South Korea
| | - R-A Lee
- Department of Surgery, Ewha Womans University College of Medicine, 260, Gonghang-Daero, Gangseo-Gu, Seoul, 07804, South Korea
| | - K H Kim
- Department of Surgery, Ewha Womans University College of Medicine, 260, Gonghang-Daero, Gangseo-Gu, Seoul, 07804, South Korea
| | - G T Noh
- Department of Surgery, Ewha Womans University College of Medicine, 260, Gonghang-Daero, Gangseo-Gu, Seoul, 07804, South Korea.
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Nam JH, Noh GT, Chung SS, Kim KH, Lee RA. Validity of C-Reactive Protein as a Surrogate Marker for Infectious Complications After Surgery for Colorectal Cancer. Surg Infect (Larchmt) 2023. [PMID: 37257187 DOI: 10.1089/sur.2022.392] [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] [Indexed: 06/02/2023] Open
Abstract
Abstract Background: This study aimed to establish a threshold of C-reactive protein (CRP) level for early detection of post-operative infectious complications after surgery for colorectal cancer. Patients and Methods: In this single-center, retrospective analysis, we studied the data of 178 patients who underwent surgery for colorectal cancer between January 2018 and February 2022. Elective surgery with curative intent was performed, and serum CRP levels were measured on five consecutive days after surgery. Receiver operating characteristic curves were utilized to assess the cutoff point of the CRP level with maximum predictive value, Results: A total of 59 cases of early post-operative complications, including pneumonia, wound infection, intra-abdominal infection, and anastomotic leakage were evaluated. During the monitoring period, patients with complications had higher CRP level than those without complications. The cutoff points on the five post-operative days were estimated to be 6.50, 10.83, 11.44, 6.67, and 5.71 mg/dL, respectively, and they were correlated to the occurrence of infectious complications. Higher CRP levels were associated with greater blood loss during surgery (p = 0.003) and increased length of hospital stay (p < 0.001) than did lower CRP levels. Conclusions: C-reactive protein monitoring in the early post-operative period is a cost-effective test that can be easily performed to predict the occurrence of infectious complications. It may be helpful in improving surgical outcomes, shortening the length of hospital stay and appropriate antibiotic administration.
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Affiliation(s)
- Jin Hoon Nam
- Department of Surgery, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
| | - Gyoung Tae Noh
- Department of Surgery, Ewha Womans University, College of Medicine, Seoul, Republic of Korea
| | - Soon Sup Chung
- Department of Surgery, Ewha Womans University, College of Medicine, Seoul, Republic of Korea
| | - Kwang Ho Kim
- Department of Surgery, Ewha Womans University, College of Medicine, Seoul, Republic of Korea
| | - Ryung-Ah Lee
- Department of Surgery, Ewha Womans University, College of Medicine, Seoul, Republic of Korea
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Choi JW, Kim YH, Mun JH, Jo SJ, Roh MR, Chung KY, Yun SJ, Lee JB, Yun SK, Kim MS, Kim HJ, Kim KH, Kim IH, Park JH, Li K, Kim YC. Epidemiology and survival analysis of Merkel cell carcinoma in South Korea: a nationwide, multicenter retrospective study. Int J Dermatol 2023. [PMID: 37212335 DOI: 10.1111/ijd.16716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/13/2023] [Accepted: 05/04/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Merkel cell carcinoma (MCC) is a rare, aggressive skin cancer, of which most research has been conducted in Caucasians. Therefore, the clinicopathological features and prognosis of Merkel cell carcinoma in Asians are still scarce. The aim of this study is to investigate the epidemiology and survival of MCC in South Korea and provide representative information regarding MCC in Asia. METHODS This was a retrospective, nationwide, multicenter study conducted in 12 centers across South Korea. Patients with pathologically proven MCC were included in the study. The clinicopathological features and clinical outcomes of the patients were investigated. Overall survival (OS) was analyzed using the Kaplan-Meier method, and independent prognostic factors were identified using Cox regression analysis. RESULTS A total of 161 patients with MCC were evaluated. The mean age was 71 years with a female predominance. OS was significantly different among the stages. Among clinicopathological features, multivariate Cox regression analysis demonstrated that only the stage at diagnosis was associated with poorer overall survival. CONCLUSIONS The results of our study suggest that the incidence of MCC was higher in females than in males and that there was a higher rate of local disease at the time of diagnosis. Among the variable clinicopathological features, disease stage at diagnosis was the only significant prognostic factor for MCC in South Korea. The findings of this nationwide, multicenter study suggest that MCC has distinct features in South Korea compared with other countries.
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Affiliation(s)
- Jee Woong Choi
- Department of Dermatology, Ajou University School of Medicine, Suwon, South Korea
| | - Yul Hee Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, South Korea
| | - Je-Ho Mun
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - Seong Jin Jo
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - Mi Ryung Roh
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Kee Yang Chung
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Sook Jung Yun
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
| | - Jee-Bum Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
| | - Seok-Kweon Yun
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, South Korea
| | - Min Sung Kim
- Department of Dermatology, Chosun University School of Medicine, Gwangju, South Korea
| | - Hee Joo Kim
- Department of Dermatology, Gil Medical Center, School of Medicine, Gachon University College of Medicine, Incheon, South Korea
| | - Kwang Ho Kim
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si, Gyeonggi-do, South Korea
| | - Il-Hwan Kim
- Department of Dermatology, Korea University Ansan Hospital, Korea University College of Medicine, Seoul, South Korea
| | - Ji-Hye Park
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Kapsok Li
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - You Chan Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, South Korea
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Jeong SH, Hong EH, Park EJ, Kim KJ, Kim KH. A Case of Pirfenidone-Induced Photosensitive Drug Eruption. Ann Dermatol 2023; 35:S48-S51. [PMID: 37853864 PMCID: PMC10608387 DOI: 10.5021/ad.21.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 10/20/2023] Open
Abstract
A 75-year-old male was diagnosed with idiopathic pulmonary fibrosis and treated with pirfenidone. He presented with an erythematous thick scaly patch on his face, neck, and both hands and arms. He had a history of significant exposure to sunlight without using sunscreen. All lesions were restricted to sun-exposed areas and appeared one month ago. Histopathological examination revealed necrotic keratinocytes, epidermal spongiosis, liquefaction degeneration of the basal layer, interface dermatitis, solar elastosis, and upper dermal perivascular lympho-histiocytic infiltration. Based on clinical and histopathological findings, the skin lesion could be diagnosed as photosensitive drug eruption induced by pirfenidone. Pirfenidone was discontinued for a month, and the patient was treated with oral and topical corticosteroids. Consequently, the skin lesion almost fully cleared, leaving mild postinflammatory hyperpigmentation. Although there are many reports of photosensitivity reactions to pirfenidone, dermatologists are still not familiar with this drug. Through this case presentation, clinicians should be aware of the potential phototoxic effects of pirfenidone and provide the necessary precautionary information to patients who take pirfenidone.
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Affiliation(s)
- Soo Hyun Jeong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Hye Hong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea.
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20
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Lee J, Bae JH, Oh SJ, Lee D, Kim HJ, Kim IH, Mun JH, Kim KH, Lee KH. Clinical and histopathologic features of pediatric longitudinal melanonychia: A multicenter retrospective study. J Am Acad Dermatol 2023:S0190-9622(23)00272-4. [PMID: 36841337 DOI: 10.1016/j.jaad.2023.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 01/12/2023] [Accepted: 02/09/2023] [Indexed: 02/27/2023]
Affiliation(s)
- Jongeun Lee
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jai Hee Bae
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Se Jin Oh
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dongyoun Lee
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Hee Joo Kim
- Department of Dermatology, Gil Medical Center, School of Medicine, Gachon University College of Medicine, Incheon, Korea
| | - Il-Hwan Kim
- Department of Dermatology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Je-Ho Mun
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kyung Ho Lee
- Department of Dermatology, Bucheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
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21
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Kim SJ, Lee Y, Choi EJ, Lee JM, Kim KH, Oh JW. The development progress of multi-array colourimetric sensors based on the M13 bacteriophage. Nano Converg 2023; 10:1. [PMID: 36595116 PMCID: PMC9808696 DOI: 10.1186/s40580-022-00351-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Techniques for detecting chemicals dispersed at low concentrations in air continue to evolve. These techniques can be applied not only to manage the quality of agricultural products using a post-ripening process but also to establish a safety prevention system by detecting harmful gases and diagnosing diseases. Recently, techniques for rapid response to various chemicals and detection in complex and noisy environments have been developed using M13 bacteriophage-based sensors. In this review, M13 bacteriophage-based multi-array colourimetric sensors for the development of an electronic nose is discussed. The self-templating process was adapted to fabricate a colour band structure consisting of an M13 bacteriophage. To detect diverse target chemicals, the colour band was utilised with wild and genetically engineered M13 bacteriophages to enhance their sensing abilities. Multi-array colourimetric sensors were optimised for application in complex and noisy environments based on simulation and deep learning analysis. The development of a multi-array colourimetric sensor platform based on the M13 bacteriophage is likely to result in significant advances in the detection of various harmful gases and the diagnosis of various diseases based on exhaled gas in the future.
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Affiliation(s)
- Sung-Jo Kim
- Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Republic of Korea
| | - Yujin Lee
- Department of Nano Fusion Technology, Pusan National University, Busan, Republic of Korea
| | - Eun Jung Choi
- Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Republic of Korea
- Korea Nanobiotechnology Center, Pusan National University, Busan, Republic of Korea
| | - Jong-Min Lee
- School of Nano Convergence Technology, Hallym University, Chuncheon, Republic of Korea
- Korea and Nano Convergence Technology Center, Hallym University, Chuncheon, Republic of Korea
| | - Kwang Ho Kim
- School of Materials Science and Engineering, Pusan National University, Busan, Republic of Korea
- Global Frontier Research and Development Center for Hybrid Interface Materials, Pusan National University, Busan, Republic of Korea
| | - Jin-Woo Oh
- Bio-IT Fusion Technology Research Institute, Pusan National University, Busan, Republic of Korea
- Department of Nano Fusion Technology, Pusan National University, Busan, Republic of Korea
- Korea Nanobiotechnology Center, Pusan National University, Busan, Republic of Korea
- Department of Nanoenergy Engineering and Research Center for Energy Convergence Technology, Pusan National University, Busan, Republic of Korea
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22
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Shin SM, Baek EJ, Oh DY, Kim KH, Kim KJ, Park EJ. Functional validation of co-culture model of human keratinocytes and neuronal cell line for sensitive skin by using transient receptor potential channel vanilloid subfamily member 1 antagonist. Skin Res Technol 2023; 29:e13275. [PMID: 36704884 PMCID: PMC9838752 DOI: 10.1111/srt.13275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Sensitive skin is a subjective cutaneous hyper-reactivity that occurs in response to various innocuous stimuli. Keratinocytes have recently been shown to participate in sensory transduction by releasing many neuroactive molecules that bind to intra-epidermal free nerve endings and modulate nociception. In the literature, the characterization of these interactions has been based on the co-culture of keratinocyte and mammalian-origin neuronal cell lines. In this study, we established an in vitro model based on a co-culture of primary human keratinocytes and differentiated SH-SY5Y cells, a human neuronal cell line. METHODS Human epidermal keratinocytes and SH-SY5Y cells were monocultured and co-cultured. Changes in calcium influx, substance P, inflammatory cytokines, and neuropeptides between the monoculture and co-culture groups treated with capsaicin only and capsaicin with transient receptor potential channel vanilloid subfamily member 1 (TRPV1) antagonist, trans-4-tert-butylcyclohexanol (TTBC), together. In addition, the difference in stinging sensation was evaluated by applying it to the volunteers. RESULTS When SH-SY5Y cells were co-cultured with keratinocytes, they had no significant effect on axonal development. Substance P was also released after capsaicin treatment and reduced by TTBC under co-culture conditions. Moreover, the expression of inflammatory cytokines and neuropeptides was significantly increased in co-cultured keratinocytes compared to that under monoculture conditions. In addition, the stinging sensation was significantly induced after the application of capsaicin in vivo and was relieved after the application of the TRPV1 antagonist. CONCLUSION We demonstrated that the novel co-culture model is functionally valid through capsaicin and TRPV1 antagonist. We also confirmed that TTBC could be used for the treatment of sensitive skin through a co-culture model and in vivo tests. This co-culture model of keratinocytes and SH-SY5Y cells may be useful in vitro alternatives for studying the close communication between keratinocytes and neuronal cells and for screening therapeutic drugs for sensitive skin.
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Affiliation(s)
- Sun Mee Shin
- Department of Dermatology, Hallym Institute for Translational Medicine, Anyang, Korea
| | - Eun Joo Baek
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Dong Yeol Oh
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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23
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Nguyen T, Chung JH, Bak GH, Kim YH, Kim M, Kim YJ, Kwon RJ, Choi EJ, Kim KH, Kim YS, Oh JW. Multiarray Biosensor for Diagnosing Lung Cancer Based on Gap Plasmonic Color Films. ACS Sens 2022; 8:167-175. [PMID: 36584356 PMCID: PMC9887647 DOI: 10.1021/acssensors.2c02001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Adaptable and sensitive materials are essential for the development of advanced sensor systems such as bio and chemical sensors. Biomaterials can be used to develop multifunctional biosensor applications using genetic engineering. In particular, a plasmonic sensor system using a coupled film nanostructure with tunable gap sizes is a potential candidate in optical sensors because of its simple fabrication, stability, extensive tuning range, and sensitivity to small changes. Although this system has shown a good ability to eliminate humidity as an interferant, its performance in real-world environments is limited by low selectivity. To overcome these issues, we demonstrated the rapid response of gap plasmonic color sensors by utilizing metal nanostructures combined with genetically engineered M13 bacteriophages to detect volatile organic compounds (VOCs) and diagnose lung cancer from breath samples. The M13 bacteriophage was chosen as a recognition element because the structural protein capsid can readily be modified to target the desired analyte. Consequently, the VOCs from various functional groups were distinguished by using a multiarray biosensor based on a gap plasmonic color film observed by hierarchical cluster analysis. Furthermore, the lung cancer breath samples collected from 70 healthy participants and 50 lung cancer patients were successfully classified with a high rate of over 89% through supporting machine learning analysis.
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Affiliation(s)
- Thanh
Mien Nguyen
- Bio-IT
Fusion Technology Research Institute, Pusan
National University, Busan 46241, Republic of Korea
| | - Jae Heun Chung
- Department
of Internal Medicine, College of Medicine, Pusan National University, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
| | - Gyeong-Ha Bak
- Department
of Nano Fusion Technology, Pusan National
University, Busan 46241, Republic of Korea
| | - You Hwan Kim
- Department
of Nano Fusion Technology, Pusan National
University, Busan 46241, Republic of Korea
| | - Minjun Kim
- Department
of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ye-Ji Kim
- Department
of Nano Fusion Technology, Pusan National
University, Busan 46241, Republic of Korea
| | - Ryuk Jun Kwon
- Family
Medicine Clinic and Research Institute of Convergence of Biomedical
Science and Technology, Pusan National University
Yangsan Hospital, Beomeo-ri, Mulgeum-eup, Yangsan, Gyeongsangnam-do 50612, Republic of Korea
| | - Eun-Jung Choi
- Bio-IT
Fusion Technology Research Institute, Pusan
National University, Busan 46241, Republic of Korea,Korea
Nanobiotechnology Center, Pusan National
University, Busan 46241, Republic of Korea
| | - Kwang Ho Kim
- School
of Materials Science and Engineering, Pusan
National University, Busan 46241, Republic of Korea,Global
Frontier Research and Development Center for Hybrid Interface Materials, Pusan National University, Busan 46241, Republic
of Korea,
| | - Yun Seong Kim
- Department
of Internal Medicine, College of Medicine, Pusan National University, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea,Research
Institute of Convergence Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea,
| | - Jin-Woo Oh
- Bio-IT
Fusion Technology Research Institute, Pusan
National University, Busan 46241, Republic of Korea,Department
of Nano Fusion Technology, Pusan National
University, Busan 46241, Republic of Korea,Department
of Nanoenergy Engineering and Research Center for Energy Convergence
Technology, Pusan National University, Busan 46241, Republic of Korea,Korea
Nanobiotechnology Center, Pusan National
University, Busan 46241, Republic of Korea,
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24
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Jung JW, Jang YJ, Hong EH, Kim KH, Kim KJ, Park EJ. Dysphagia with Unilateral Vocal Cord Paralysis in Herpes Zoster: A Case Report. Ann Dermatol 2022; 34:475-477. [PMID: 36478430 PMCID: PMC9763904 DOI: 10.5021/ad.20.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 01/19/2021] [Accepted: 02/01/2021] [Indexed: 11/25/2022] Open
Abstract
Herpes zoster is caused by the varicella-zoster virus, which becomes latent in ganglia after primary infection. When the varicella-zoster virus reactivates on the cranial nerve, the patient can suffer from cranial nerve palsy, pain, and skin lesions on the head and neck area. A 57-year-old immunocompetent male presented with dysphagia lasting 10 days. Computed tomography and other neurological findings were normal. However, laryngoscopy showed right vocal cord paralysis, which might be the reason for dysphagia in this patient. There was a grouped crusted lesion on the right posterior auricular area that appeared 5 days after the dysphagia. After famciclovir and prednisolone combination therapy, the patient was cured with no sequelae. This is a rare case of herpes zoster in an immunocompetent patient who presented with dysphagia. In addition, it was difficult to make an accurate diagnosis because his skin lesion appeared several days after dysphagia.
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Affiliation(s)
- Joon Woo Jung
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Ye Ji Jang
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Hye Hong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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25
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Davidson BA, Turner TB, Kim KH, Cass I, Calat L, McGwin G, Kushner DM. SGO and the elephant that is still in the room: Wellness, burnout and gynecologic oncology. Gynecol Oncol 2022; 167:354-359. [PMID: 36064677 DOI: 10.1016/j.ygyno.2022.08.018] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To measure wellness and burnout among gynecologic oncology clinicians and identify trends and at-risk populations to inform future interventions. METHODS Gynecologic oncologist (GO) and advanced practice provider (APP) responses to the 2020 Society of Gynecologic Oncology State of the Society survey were analyzed. The Maslach Burnout Inventory criteria for burnout was used. Work-life balance was scored on a 5-point Likert scale. Chi-square tests were used to compare mental health factors and the prevalence of burnout. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated for associations between burnout and gender. RESULTS 543 survey responses were included for analysis. Most GO (54%) and all APP respondents were female. Female GOs were disproportionately affected by burnout particularly in the Northeast (female(F): 40.9% vs male(M): 19.1%, p = 0.007) and South (F: 42.5% vs M:22.9%, p = 0.01). Burnout in female GOs over 40 was 1.79 (CI: 1.13-2.83; p-value 0.01) times higher than similarly aged males. Females in non-private practice experienced burnout 1.66 times that of males in similar positions (CI: 1.18-2.94; p < 0.0001). Female GOs reported the worst work-life balance across all 5 domains. APPs and female GOs experienced more stress and feeling overwhelmed compared to men. GOs were more reluctant to see a mental health professional (p = 0.0003) or take medication (p = 0.009) than APPs. CONCLUSIONS Burnout in gynecologic oncology persists in both genders and is felt most acutely by female GOs. APPs are not immune and would benefit from inclusion in future research to mitigate burnout in healthcare clinicians.
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Affiliation(s)
- B A Davidson
- Division of Gynecologic Oncology, Duke University, Durham, NC, United States of America.
| | - T B Turner
- St. Luke's Cancer Institute, Boise, ID, United States of America
| | - K H Kim
- Division of Gynecologic Oncology, Cedars-Sinai Medical Center, Los Angeles, CA, United States of America
| | - I Cass
- Division of Gynecologic Oncology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States of America
| | - L Calat
- Department of Obstetrics and Gynecology, NYU Langone Health, New York, NY, United States of America
| | - G McGwin
- School of Public Health, Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, United States of America
| | - D M Kushner
- Division of Gynecologic Oncology, University of Wisconsin, Madison, WI, United States of America
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26
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Jeon K, Kim D, Choi JO, Kim KH, Park MS, Jeon ES. Genetic and clinical characteristics of transthyretin cardiac amyloidosis in Koreans. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1773] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Transthyretin amyloidosis with mutations (aTTRv amyloidosis) have over 100 recognized pathogenic mutations of the TTR gene and its clinical manifestations are very heterogenous. Through the global THAOS (Transthyretin Amyloidosis Outcomes Survey) patient registry, different and several types of mutants and clinical differences have been identified. Awareness of aTTRv amyloidosis is now becoming somewhat significant amongst physicians all over the world. This is a detailed look at such efforts in Korea.
Purpose
We aimed to seek the geologic significance of aTTRv amyloidosis in South Korea.
Methods
This was an analysis of 638 Korean amyloidosis patients in a single center over a period of 16 years from 1995 to October 2021. 95 individuals were found with aTTR mutations.
Results
aTTRv amyloidosis constituted 14.8% (n=95) of amyloidosis patients, and the most commonly involved organ being the heart (61.7%, n=58). Unlike the rest of the world, the mixed phenotype was most common (51.0%, n=48) in Korea and the most universal mutation in Koreans were Asp38Ala, which only constitutes about 1.0% in the THAOS registry. Val30Met mutation, which comprises 76% of the mutation in the THAOS registry, was mostly associated the neurologic phenotypes. However, the same mutations in Korea mixed phenotypes with cardiac (38.4%) and neurologic (37%) symptoms.
Conclusion
aTTRv amyloidosis in Korea is different from other patients worldwide. The mixed phenotype was most common, emphasizing the need for heart failure management in the Korean population. Genotype wise, Koreans held a less common mutation of Asp38Ala. The most common mutation of Val30Met was more likely to be associated cardiac symptoms, which concurs with other studies that suggesting that geological features are more important than mutations itself.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Jeon
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - D Kim
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J O Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - K H Kim
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - M S Park
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - E S Jeon
- Samsung Medical Center , Seoul , Korea (Republic of)
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27
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Jeong SH, Lim DJ, Chang SE, Kim KH, Kim KJ, Park EJ. Omalizumab on Chronic Spontaneous Urticaria and Chronic Inducible Urticaria: A Real-World Study of Efficacy and Predictors of Treatment Outcome. J Korean Med Sci 2022; 37:e211. [PMID: 35818702 PMCID: PMC9274107 DOI: 10.3346/jkms.2022.37.e211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/08/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Omalizumab is a very important drug for the treatment of chronic urticaria. Although omalizumab's therapeutic efficacy has been demonstrated, data on real-world experiences in Korea, especially regarding chronic inducible urticaria (CIndU), are limited. This study attempted to compare the efficacy of omalizumab in Korean chronic spontaneous urticaria (CSU) and CIndU patients. METHODS Fifty-two CSU and 29 CIndU patients were included and Urticaria Activity Score 7 (UAS7) at baseline, week 4, and week 12 was assessed retrospectively. RESULTS Omalizumab 150 mg significantly decreased UAS7 in both patients with CSU and CIndU with only one dose (P < 0.001). The significant decrease in the UAS7 scores of both groups of patients continued from weeks 4 to 12. Although there was no significant difference in treatment efficacy between the two groups, the symptoms of patients with CSU tended to improve faster; furthermore, the number of antihistamines administered daily reduced more significantly in this patient group (P = 0.047). Additionally, the decrease in the UAS7 score between baseline and week 12 and the response rate were higher in patients with CSU. CONCLUSION Omalizumab may be slightly more effective against CSU than against CIndU. Regarding the CIndU subtypes, dermatographic urticaria was associated with the greatest reduction in the UAS7 score, and patients with this condition showed the highest response rate, indicating the best effect of omalizumab. The duration of chronic urticaria was greater in non-responders than in responders (P = 0.025). Conversely, baseline immunoglobulin E levels were significantly higher in responders (P = 0.039).
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Affiliation(s)
- Soo Hyun Jeong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Dong Jun Lim
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung Eun Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea.
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28
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Unda F, Mottiar Y, Mahon EL, Karlen SD, Kim KH, Loqué D, Eudes A, Ralph J, Mansfield SD. A new approach to zip-lignin: 3,4-dihydroxybenzoate is compatible with lignification. New Phytol 2022; 235:234-246. [PMID: 35377486 PMCID: PMC9325543 DOI: 10.1111/nph.18136] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 12/02/2021] [Accepted: 03/17/2022] [Indexed: 06/02/2023]
Abstract
Renewed interests in the development of bioenergy, biochemicals, and biomaterials have elicited new strategies for engineering the lignin of biomass feedstock plants. This study shows, for the first time, that 3,4-dihydroxybenzoate (DHB) is compatible with the radical coupling reactions that assemble polymeric lignin in plants. We introduced a bacterial 3-dehydroshikimate dehydratase into hybrid poplar (Populus alba × grandidentata) to divert carbon flux away from the shikimate pathway, which lies upstream of lignin biosynthesis. Transgenic poplar wood had up to 33% less lignin with p-hydroxyphenyl units comprising as much as 10% of the lignin. Mild alkaline hydrolysis of transgenic wood released fewer ester-linked p-hydroxybenzoate groups than control trees, and revealed the novel incorporation of cell-wall-bound DHB, as well as glycosides of 3,4-dihydroxybenzoic acid (DHBA). Two-dimensional nuclear magnetic resonance (2D-NMR) analysis uncovered DHBA-derived benzodioxane structures suggesting that DHB moieties were integrated into the lignin polymer backbone. In addition, up to 40% more glucose was released from transgenic wood following ionic liquid pretreatment and enzymatic hydrolysis. This work highlights the potential of diverting carbon flux from the shikimate pathway for lignin engineering and describes a new type of 'zip-lignin' derived from the incorporation of DHB into poplar lignin.
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Affiliation(s)
- Faride Unda
- Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouverBCV6T 1Z4Canada
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
| | - Yaseen Mottiar
- Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouverBCV6T 1Z4Canada
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
| | - Elizabeth L. Mahon
- Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouverBCV6T 1Z4Canada
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
| | - Steven D. Karlen
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
- Department of BiochemistryUniversity of Wisconsin‐Madison433 Babcock DriveMadisonWI53706USA
| | - Kwang Ho Kim
- Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouverBCV6T 1Z4Canada
- Clean Energy Research CenterKorea Institute of Science and TechnologySeoul02792Korea
| | - Dominique Loqué
- Joint BioEnergy Institute5885 Hollis StreetEmeryvilleCA94608USA
| | - Aymerick Eudes
- Joint BioEnergy Institute5885 Hollis StreetEmeryvilleCA94608USA
- Environmental Genomics and Systems Biology DivisionLawrence Berkeley National LaboratoryBerkeleyCA94720USA
| | - John Ralph
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
- Department of BiochemistryUniversity of Wisconsin‐Madison433 Babcock DriveMadisonWI53706USA
| | - Shawn D. Mansfield
- Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouverBCV6T 1Z4Canada
- Department of EnergyGreat Lakes Bioenergy Research CenterWisconsin Energy InstituteUniversity of Wisconsin‐Madison1552 University AvenueMadisonWI53726USA
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Karnitski A, Choi JW, Suh DJ, Yoo CJ, Lee H, Kim KH, Kim CS, Kim K, Ha JM. Roles of metal and acid sites in the reductive depolymerization of concentrated lignin over supported Pd catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
With the increase of the adult orthodontic population, there is a need for an accurate and evidence-based prediction of the posttreatment face in 3 dimensions (3D). The objectives of this study are 1) to develop a 3D postorthodontic face prediction method based on a deep learning network using the patient-specific factors and orthodontic treatment conditions and 2) to validate the accuracy and clinical usability of the proposed method. Paired sets (n = 268) of pretreatment (T1) and posttreatment (T2) cone-beam computed tomography (CBCT) of adult patients were trained with a conditional generative adversarial network to generate 3D posttreatment facial data based on the patient's gender, age, and the changes of upper (ΔU1) and lower incisor position (ΔL1) as input. The accuracy was calculated with prediction error and mean absolute distances between real T2 (T2) and predicted T2 (PT2) near 6 perioral landmark regions, as well as percentage of prediction error less than 2 mm using test sets (n = 44). For qualitative evaluation, an online survey was conducted with experienced orthodontists as panels (n = 56). Overall, PT2 indicated similar 3D changes to the T2 face, with the most apparent changes simulated in the perioral regions. The mean prediction error was 1.2 ± 1.01 mm with 80.8% accuracy. More than 50% of the experienced orthodontists were unable to distinguish between real and predicted images. In this study, we proposed a valid 3D postorthodontic face prediction method by applying a deep learning algorithm trained with CBCT data sets.
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Affiliation(s)
- Y S Park
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Choi
- Smile Future Orthodontics, Seoul, Korea.,Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Y Kim
- Imagoworks Inc., Seoul, Korea
| | - S H Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Lee
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - K H Kim
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - C J Chung
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
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Hong KS, Chung SS, Kim KH, Lee RA. Efficacy of a rehabilitation program using minor muscles in colorectal cancer patients with chemotherapy-induced neuropathy: preliminary study. Korean J Clin Oncol 2022; 18:11-16. [PMID: 36945329 PMCID: PMC9942769 DOI: 10.14216/kjco.22002] [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] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/07/2022]
Abstract
Purpose Chemotherapy-induced peripheral neuropathy (CIPN) is one of the common reasons that colorectal cancer patients cannot maintain their routine chemotherapy schedules. Some medications are used for pain relief; however, the effect of medication is disappointing. We carried out this study to confirm that a rehabilitation program using minor muscles might provide a valuable aid in symptom relief of CIPN. Methods Eleven colorectal cancer patients participated in the basic craftwork program which encouraged the use of the minor muscles of the hands to make and decorate the handicrafts and it was held for 2 hours once a week, for a total of four times. There were no limitations in the stage of cancer or types of chemotherapy to participate the program. Questionnaires were obtained from participants before and after the basic handicrafts program. Results Of the 11 patients (3 men, 8 women; mean age, 53.0±11.2 years), six received 5-fluorouracil (5-FU) chemotherapy, four received FOLFOX4 (combination of 5-FU, leucovorin, and oxaliplatin) chemotherapy, and one received 5-FU, FOLFOX4, and FOLFIRI (combination of 5-FU, leucovorin, and irinotecan) chemotherapy sequentially. Patients attended the program a mean of 3.8±0.4 times. Common symptoms of CIPN were "throbbing pain," "aching pain," and "numbness." The mean score of the questionnaires between pre- and post-program was 34.1±31.7 points and 24.4±21.5 points each, and it was significantly decreased (P=0.040). Conclusion Patients often suffered from CIPN symptoms like throbbing or aching pain and numbness during their adjuvant chemotherapy. A rehabilitation program using minor muscles for CIPN is expected to be effective.
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Affiliation(s)
- Kyung Sook Hong
- Department of Surgery, Ewha Womans University Seoul Hospital, Ewha Womans University College of Medicine, Seoul, Korea
| | - Soon Sup Chung
- Department of Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, Korea
| | - Kwang Ho Kim
- Department of Surgery, Ewha Womans University Seoul Hospital, Ewha Womans University College of Medicine, Seoul, Korea
| | - Ryung-Ah Lee
- Department of Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, Korea
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Kim KH, Jin X, Ji A, Aui A, Mba-Wright M, Yoo CJ, Choi JW, Ha JM, Kim CS, Yoo CG, Choi JW. Catalytic conversion of waste corrugated cardboard into lactic acid using lanthanide triflates. Waste Manag 2022; 144:41-48. [PMID: 35306464 DOI: 10.1016/j.wasman.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/02/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
The efficient strategy for waste conversion and resource recovery is of great interest in the sustainable bioeconomy context. This work reports on the catalytic upcycling of waste corrugated cardboard (WCC) into lactic acid using lanthanide triflates catalysts. WCC, a primary contributor to municipal solid wastes, has been viewed as a feedstock for producing a wide range of renewable products. Hydrothermal conversion of WCC was carried out in the presence of several lanthanide triflates. The reaction with erbium(III) triflate (Er(OTf)3) and ytterbium(III) triflate (Yb(OTf)3) resulted in high lactic acid yields, 65.5 and 64.3 mol%, respectively. In addition, various monomeric phenols were readily obtained as a co-product stream, opening up opportunities in waste management and resource recovery. Finally, technoeconomic analysis was conducted based on the experimental results, which suggests a significant economic benefit of chemocatalytic upcycling of WCC into lactic acid.
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Affiliation(s)
- Kwang Ho Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Wood Science, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada.
| | - Xuanjun Jin
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Anqi Ji
- Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
| | - Alvina Aui
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA
| | - Mark Mba-Wright
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA
| | - Chun-Jae Yoo
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jae-Wook Choi
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jeong-Myeong Ha
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Chang Soo Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Chang Geun Yoo
- Department of Chemical Engineering, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA; The Michael M. Szwarc Polymer Research Institute, Syracuse, NY 13210, USA
| | - Joon Weon Choi
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
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Yoon JH, Baek EJ, Park EJ, Kim KH. Comparative Study of Treatment Methods for Benign Lichenoid Keratosis of the Face. Dermatol Ther 2022; 35:e15419. [PMID: 35246904 DOI: 10.1111/dth.15419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/27/2022] [Indexed: 11/29/2022]
Abstract
Benign lichenoid keratosis is one of the most common skin lesions that develop on the faces of middle-aged women. This study aimed to find an effective treatment method for benign lichenoid keratosis. A total of 49 patients, who had a positive diagnosis during 2010 to 2018, were enrolled in the study. An Investigator's Global Assessment of the lesion was done using the 5-point visual analog scale to evaluate treatment efficacy. After excluding subjects who did not have a follow-up photograph, 38 subjects were given an Investigator's Global Assessment score. Combination therapy using laser and a topical agent was useful in the management of benign lichenoid keratosis on the face. Ablative laser was effective for immediate improvement of the lesion, whereas non-ablative laser was also useful and showed several benefits over ablative laser. Optimal treatment should be decided after considering the patient's preference, compliance with treatment regimen, and skin type. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ji Ha Yoon
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Eun Joo Baek
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, South Korea
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Wu J, Ebadian M, Kim KH, Kim CS, Saddler J. The use of steam pretreatment to enhance pellet durability and the enzyme-mediated hydrolysis of pellets to fermentable sugars. Bioresour Technol 2022; 347:126731. [PMID: 35074465 DOI: 10.1016/j.biortech.2022.126731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/13/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
Although densified wood pellets are an attractive biomass feedstock for bioenergy and biofuels production, partly due to their ease of transport, their friability and hygroscopic nature (attraction of moisture) have proven problematic in terms of storage and handling. Pre-steaming the biomass was shown to reduce the need for size reduction, significantly increasing pellet durability by relocating the plant cell wall lignin to the fibre surface and consequently enhancing binding between particles. Although steam pretreatment has been shown to facilitate enzyme-mediated hydrolysis of biomass, by increasing cellulose accessibility, drying and pelletization partially impeded enzymatic hydrolysis. However, the incorporation of alkaline deacetylation or neutral sulfonation step prior to pre-steaming was shown to mitigate many of the negative effects of drying. Although drying and pelletization did not significantly impact the redistribution of lignin, a mild mechanical refining step was shown to further enhance the hydrolysis of the cellulose component of the pelletized biomass.
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Affiliation(s)
- Jie Wu
- Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver BC V6T 1Z4, Canada
| | - Mahmood Ebadian
- Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver BC V6T 1Z4, Canada
| | - Kwang Ho Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Chang Soo Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jack Saddler
- Forest Products Biotechnology/Bioenergy Group, Department of Wood Science, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver BC V6T 1Z4, Canada.
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Yoon JH, Jung JW, Park EJ, Kim KJ, Kim KH. A Case of Adalimumab-Induced Psoriasiform Dermatitis in an Ankylosing Spondylitis Patient: Unusual Progression after Adalimumab Retreatment. Ann Dermatol 2022; 34:396-398. [DOI: 10.5021/ad.20.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 11/05/2020] [Accepted: 02/01/2021] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ji Ha Yoon
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Joon Woo Jung
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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Jeong SH, Oh DY, Park EJ, Kim KJ, Kim KH. Extranodal NK-T-Cell Lymphoma, Nasal-Type Misdiagnosed as Erythema Multiforme with Nasal Fungal Infection. Indian J Dermatol 2022; 67:437-439. [PMID: 36578755 PMCID: PMC9792044 DOI: 10.4103/ijd.ijd_311_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Soo Hyun Jeong
- From the Department of Dermatology, College of Medicine, Hallym University, Sacred Heart Hospital, Anyang-Si Gyeonggi-Do, South Korea E-mail:
| | - Dong Yeol Oh
- From the Department of Dermatology, College of Medicine, Hallym University, Sacred Heart Hospital, Anyang-Si Gyeonggi-Do, South Korea E-mail:
| | - Eun Joo Park
- From the Department of Dermatology, College of Medicine, Hallym University, Sacred Heart Hospital, Anyang-Si Gyeonggi-Do, South Korea E-mail:
| | - Kwang Joong Kim
- From the Department of Dermatology, College of Medicine, Hallym University, Sacred Heart Hospital, Anyang-Si Gyeonggi-Do, South Korea E-mail:
| | - Kwang Ho Kim
- From the Department of Dermatology, College of Medicine, Hallym University, Sacred Heart Hospital, Anyang-Si Gyeonggi-Do, South Korea E-mail:
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Jeong SH, Oh DY, Kim KJ, Kim KH, Park EJ. Clinico-Pathological Concordance Rate of Scalp Lesions Showing Alopecia. Indian J Dermatol 2022; 67:324-327. [PMID: 36578761 PMCID: PMC9792002 DOI: 10.4103/ijd.ijd_112_22] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Some alopecic diseases can be diagnosed by detailed history taking and physical examination, but in many cases, biopsy must be performed to make a definite diagnosis. Aims and Objectives This study aimed to evaluate the clinico-pathological concordance of scalp lesions showing alopecia. Materials and Methods We retrospectively reviewed the electronic medical records and biopsy slides of patients who underwent biopsy for evaluating scalp lesions showing alopecia. Based on the definitions of clinico-pathological concordances, scalp alopecic disease was evaluated. Results A total of 121 patients were enrolled in the study. A total of 203 clinical differential diagnoses were made before performing a biopsy. Thirty-one patients showed full concordance, and 58 patients showed partial concordance; thus overall concordance was shown in 89 patients (73.55%). Folliculitis decalvans and alopecia areata showed a higher full concordance rate than average (P < 0.05), whereas dissecting folliculitis showed a lower overall concordance rate than average, and folliculitis decalvans showed a higher overall concordance rate than average (P < 0.05). The overall concordance rate of alopecia areata was 100% (P = 0.061). Conclusion In diagnosing folliculitis decalvans and alopecia areata, which showed high full and overall concordance, performing a biopsy to make a definite diagnosis is not always necessary, especially when patients show typical clinical features. Dissecting folliculitis, which showed low overall concordance, was less likely to be suspected as a clinical differential diagnosis, making it difficult to distinguish based on clinical findings alone. Therefore, when it is suspected, a detailed evaluation including a biopsy is recommended.
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Affiliation(s)
- Soo Hyun Jeong
- From the Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Gyeonggi-do, Korea
| | - Dong Yeol Oh
- From the Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Gyeonggi-do, Korea
| | - Kwang Joong Kim
- From the Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Gyeonggi-do, Korea
| | - Kwang Ho Kim
- From the Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Gyeonggi-do, Korea
| | - Eun Joo Park
- From the Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Gyeonggi-do, Korea,Address for correspondence: Dr. Eun Joo Park, 22 Gwanpyeong-ro 170beon-gil Dongan-gu, Anyang-si Gyeonggi-do, South Korea. E-mail:
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Sahoo RK, Yun JM, Kim KH. Bifunctional Microwave-Assisted Molybdenum-Complex Carbon Sponge Production for Supercapacitor and Water-Splitting Applications. ACS Appl Mater Interfaces 2021; 13:60966-60977. [PMID: 34898187 DOI: 10.1021/acsami.1c14873] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The synthesis of dual-function molybdenum (Mo)-complex carbonous sponges is reported for elucidating their utilization as positive and negative electrodes in electrochemical devices and their applicability to the active oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in electrocatalytic devices. Molybdenum (Mo)-coordinated polyvinyl alcohol gel is converted into a porous Mo-complex nitrogen-rich carbonous sponge (MNCS) via microwave and low-temperature-annealing processes as a positive electrode. This MNCS was further thermally treated at a higher temperature to prepare a more carbonized Mo-complex N-doped carbon sponge (cMNCS) as a negative electrode. Both sponges were lightweight and porous and exhibited excellent specific capacitances of 562 F g-1 as a positive MNCS electrode and 937 F g-1 as a negative cMNCS electrode. The asymmetric supercapacitor assembled using them reveals a power density of 887.5 W kg-1 at an energy density of 36 Wh kg-1, in addition to a retention rate of >95% after 5000 cycles. We furthermore demonstrate the electrocatalytic capabilities of these materials with overpotentials of -170 and -220 mV for the HER and 1.70 and 1.53 V for the OER at a current density of 10 mA cm-2 using a water-splitting electrocatalyzer.
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Affiliation(s)
- Rakesh K Sahoo
- Global Frontier R&D Center for Hybrid Interface Materials, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Je Moon Yun
- Division of Advanced Materials Engineering (Polymer Materials Engineering Major), Dong Eui University, 176, Eomwang-ro, Busanjin-gu, Busan 47340, Republic of Korea
| | - Kwang Ho Kim
- Global Frontier R&D Center for Hybrid Interface Materials, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
- School of Materials Science and Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
- National Core Research Center for Hybrid Materials Solution, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
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Jeong SH, Hyeong JH, Park EJ, Kim KJ, Kim KH. Human epidermal growth factor receptor 2 expression in extramammary Paget's disease and mammary Paget's disease. Australas J Dermatol 2021; 63:115-118. [PMID: 34964488 DOI: 10.1111/ajd.13782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/08/2021] [Accepted: 12/13/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Soo Hyun Jeong
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Jin Hyeok Hyeong
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, College of Medicine, Hallym University, Anyang, Korea
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Ahn HJ, Kim S, Kim KH, Lee JY. Preparation and Characterization of Thermoelectric PEDOT/Te Nanorod Array Composite Films. Materials (Basel) 2021; 15:148. [PMID: 35009293 PMCID: PMC8745889 DOI: 10.3390/ma15010148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
In this study, we prepared Te nanorod arrays via a galvanic displacement reaction (GDR) on a Si wafer, and their composite with poly(3,4-ethylenedioxythiophene) (PEDOT) were successfully synthesized by electrochemical polymerization with lithium perchlorate (LiClO4) as a counter ion. The thermoelectric performance of the composite film was optimized by adjusting the polymerization time. As a result, a maximum power factor (PF) of 235 µW/mK2 was obtained from a PEDOT/Te composite film electrochemically polymerized for 15 s at room temperature, which was 11.7 times higher than that of the PEDOT film, corresponding to a Seebeck coefficient (S) of 290 µV/K and electrical conductivity (σ) of 28 S/cm. This outstanding PF was due to the enhanced interface interaction and carrier energy filtering effect at the interfacial potential barrier between the PEDOT and Te nanorods. This study demonstrates that the combination of an inorganic Te nanorod array with electrodeposited PEDOT is a promising strategy for developing high-performance thermoelectric materials.
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Affiliation(s)
- Hong-Ju Ahn
- Electrochemistry Department, Korea Institute of Materials Science, Changwon 51508, Korea;
- School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
| | - Seil Kim
- Electrochemistry Department, Korea Institute of Materials Science, Changwon 51508, Korea;
| | - Kwang Ho Kim
- School of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
| | - Joo-Yul Lee
- Electrochemistry Department, Korea Institute of Materials Science, Changwon 51508, Korea;
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Ngome Okello OF, Doh KY, Kang HS, Song K, Kim YT, Kim KH, Lee D, Choi SY. Visualization of Transition Metal Decoration on h-BN Surface. Nano Lett 2021; 21:10562-10569. [PMID: 34618461 DOI: 10.1021/acs.nanolett.1c02198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Functional h-BN (hexagonal boron nitride) has been prepared via the incorporation of transition metal (TM) impurities like nanoparticles and single atoms. Herein, scanning transmission electron microscopy (STEM) combined with density functional theory (DFT) was employed to study Ta-, Co-, Ni-, and Ir-decorated h-BN monolayers to provide an overview of their preferential site occupancies and morphological evolutions on h-BN. Ta, Ni, Ir, and Co single atoms are all positioned on the nitrogen of h-BN; however DFT predicts the occupancy site can vary with their spin state. In terms of microstructural evolution, Co, Ni, and Ir atoms form 3D nanoclusters while Ta atoms are well dispersed and thus the single Ta atom can be decorated on h-BN. This study highlights on TM/h-BN interaction dynamics and presents an avenue for designing nanostructures for electrocatalytic application.
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Affiliation(s)
- Odongo Francis Ngome Okello
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Kyung-Yeon Doh
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Hye Su Kang
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Kyung Song
- Department of Materials Modelling and Characterization, Korea Institute of Materials Science (KIMS), Changwon 51508, South Korea
| | - Yong-Tae Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Kwang Ho Kim
- Department of Materials Science and Engineering, Pusan National University, Busan 46241, South Korea
| | - Donghwa Lee
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Si-Young Choi
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 37673, South Korea
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Yu L, Kim KS, Saeed G, Kang J, Kim KH. Hybrid ZnSe‐SnSe
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Nanoparticles Embedded in Nitrogen‐Doped Carbon Nanocube Heterostructures with Enhanced and Ultra‐stable Lithium‐Storage Performance. ChemElectroChem 2021. [DOI: 10.1002/celc.202101497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Litao Yu
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
| | - Kyung Su Kim
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
| | - Ghuzanfar Saeed
- Global Frontier R&D Center for Hybrid Interface Materials Pusan National University Busan 46241 Republic of Korea
| | - Jun Kang
- Division of Marine Engineering Korea Maritime and Ocean University Busan 49112 Republic of Korea
| | - Kwang Ho Kim
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
- Global Frontier R&D Center for Hybrid Interface Materials Pusan National University Busan 46241 Republic of Korea
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Yu L, Kim KS, Saeed G, Kang J, Kim KH. Front Cover: Hybrid ZnSe‐SnSe
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Nanoparticles Embedded in N‐doped Carbon Nanocube Heterostructures with Enhanced and Ultra‐stable Lithium‐Storage Performance (ChemElectroChem 24/2021). ChemElectroChem 2021. [DOI: 10.1002/celc.202101498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Litao Yu
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
| | - Kyung Su Kim
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
| | - Ghuzanfar Saeed
- Global Frontier R&D Center for Hybrid Interface Materials Pusan National University Busan 46241 Republic of Korea
| | - Jun Kang
- Division of Marine Engineering / Interdisciplinary Major of Maritime AI Convergence Korea Maritime and Ocean University Busan 49112 Republic of Korea
| | - Kwang Ho Kim
- School of Materials Science and Engineering Pusan National University Busan 46241 Republic of Korea
- Global Frontier R&D Center for Hybrid Interface Materials Pusan National University Busan 46241 Republic of Korea
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Wang Y, Meng X, Tian Y, Kim KH, Jia L, Pu Y, Leem G, Kumar D, Eudes A, Ragauskas AJ, Yoo CG. Engineered Sorghum Bagasse Enables a Sustainable Biorefinery with p-Hydroxybenzoic Acid-Based Deep Eutectic Solvent. ChemSusChem 2021; 14:5235-5244. [PMID: 34533890 DOI: 10.1002/cssc.202101492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Integrating multidisciplinary research in plant genetic engineering and renewable deep eutectic solvents (DESs) can facilitate a sustainable and economic biorefinery. Herein, we leveraged a plant genetic engineering approach to specifically incorporate C6 C1 monomers into the lignin structure. By expressing the bacterial ubiC gene in sorghum, p-hydroxybenzoic acid (PB)-rich lignin was incorporated into the plant cell wall while this monomer was completely absent in the lignin of the wild-type (WT) biomass. A DES was synthesized with choline chloride (ChCl) and PB and applied to the pretreatment of the PB-rich mutant biomass for a sustainable biorefinery. The release of fermentable sugars was significantly enhanced (∼190 % increase) compared to untreated biomass by the DES pretreatment. In particular, the glucose released from the pretreated mutant biomass was up to 12 % higher than that from the pretreated WT biomass. Lignin was effectively removed from the biomass with the preservation of more than half of the β-Ο-4 linkages without condensed aromatic structures. Hydrogenolysis of the fractionated lignin was conducted to demonstrate the potential of phenolic compound production. In addition, a simple hydrothermal treatment could selectively extract PB from the same engineered lignin, showing a possible circular biorefinery. These results suggest that the combination of PB-based DES and engineered PB-rich biomass is a promising strategy to achieve a sustainable closed-loop biorefinery.
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Affiliation(s)
- Yunxuan Wang
- Department of Chemical Engineering, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA
| | - Xianzhi Meng
- Department of Chemical & Biomolecular Engineering, University of Tennessee-Knoxville, Knoxville, TN 37996, USA
| | - Yang Tian
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Joint BioEnergy Institute, Emeryville, CA 94608, USA
| | - Kwang Ho Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02797, South Korea
- Department of Wood Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Linjing Jia
- Department of Chemical Engineering, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA
| | - Yunqiao Pu
- Center of Bioenergy Innovation, Biosciences Division, University of Tennessee-Oak Ridge National Laboratory Joint Institute for Biological Science Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Gyu Leem
- Department of Chemistry, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA
- The Michael M. Szwarc Polymer Research Institute, Syracuse, NY 13210, USA
| | - Deepak Kumar
- Department of Chemical Engineering, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA
| | - Aymerick Eudes
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Joint BioEnergy Institute, Emeryville, CA 94608, USA
| | - Arthur J Ragauskas
- Department of Chemical & Biomolecular Engineering, University of Tennessee-Knoxville, Knoxville, TN 37996, USA
- Center of Bioenergy Innovation, Biosciences Division, University of Tennessee-Oak Ridge National Laboratory Joint Institute for Biological Science Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Center of Renewable Carbon, Department of Forestry, Wildlife, and Fisheries, University of Tennessee Institute of Agriculture, Knoxville, TN 37996, USA
| | - Chang Geun Yoo
- Department of Chemical Engineering, College of Environmental Science and Forestry, State University of New York, Syracuse, NY 13210, USA
- The Michael M. Szwarc Polymer Research Institute, Syracuse, NY 13210, USA
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Yoon JH, Jang YJ, Cho EB, Park EJ, Kim KH, Kim KJ. A Rare Case of Transient Friction Melanosis of the Finger: A Case Report. Ann Dermatol 2021; 33:568-571. [PMID: 34858009 PMCID: PMC8577913 DOI: 10.5021/ad.2021.33.6.568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 05/12/2020] [Accepted: 05/27/2020] [Indexed: 11/08/2022] Open
Abstract
Friction melanosis (FM) is an acquired pigmented disease that is caused by recurrent mechanical stress. There is no previous report explaining the presence of tiny brown-colored particles confined to the corneal layer. We describe a case of a rare form of FM of the finger that showed a relatively transient clinical course. A 17-year-old Korean female presented with a 5-month history of an asymptomatic localized hyperpigmented patch on the tip of the right index finger. The dermoscopic examination revealed homogenous globular pattern, which favored pigmentation over hemorrhage. Histopathologically, hyperkeratosis and acanthosis with lymphohistiocytic infiltration of the superficial dermis were noted on hematoxylin and eosin staining; however, there was neither a definite increase in melanophages in the upper dermis nor melanocytic proliferation in the basal layer. Per high-power field, multiple brown-colored tiny particles were scattered in the corneal layer. The particles were not dyed by Fontana-Masson stain, iron stain, and S-100. We questioned the patient about the presence of irritation and found that she had bought new shoes at the time of the onset. She was habituated to placing her fingers in her shoes while wearing them because they were slightly tight. The lesion disappeared spontaneously a week after the cause of friction was eliminated. Altogether, we encountered a rare form of FM that occurred in a rare location with a transient clinical course. Further cases on pigmentation restricted to finger tips might reveal the origin of the particles.
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Affiliation(s)
- Ji Ha Yoon
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Ye Ji Jang
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Byul Cho
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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Jang YJ, Hong EH, Park EJ, Kim KJ, Kim KH. Immunohistochemical Analysis of Differences of Toll-Like Receptor 2, Mast Cells, and Neurofilaments between Granulomatous Rosacea and Non-Granulomatous Rosacea. Indian J Dermatol 2021; 66:343-346. [PMID: 34759390 PMCID: PMC8530054 DOI: 10.4103/ijd.ijd_18_20] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Granulomatous rosacea is a distinct variant of rosacea because of its unique histopatholiogic findings. However, the pathogenesis of granulomatous rosacea has not yet been clearly demonstrated. Aims and Objectives: The aim of this study was to investigate the expression of toll-like receptor 2, mast cells, and neurofilaments in the granulomatous rosacea compared with the non-granulomatous rosacea. Materials and Methods: Biopsy specimens were obtained from 12 patients with erythematotelangiectatic rosacea, 11 patients with granulomatous rosacea, and 11 control patients. Biopsy tissue blocks were subjected to immunohistochemical staining using antibodies against toll-like receptor 2, mast cells, and neurofilaments. Results: In granulomatous rosacea, the expression of mast cells increased significantly, compared to the erythematotelangiectatic rosacea and the control group (P-value = 0.001 and 0.013, respectively). Additionally, the expression of toll-like receptor 2 in the granulomatous rosacea group was higher than that in the control group (P-value = 0.04). Conclusion: The results of this study suggest that the increased expression of mast cells may be a sign of chronic, later stage of granulomatous rosacea compared to the erythematotelangiectatic rosacea. The increased expression of toll-like receptor 2 suggests that cathelicidin-induced neuroimmune pathogenesis also contributes to the pathophysiology of granulomatous rosacea.
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Affiliation(s)
- Ye Ji Jang
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Hye Hong
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Eun Joo Park
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Joong Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Kwang Ho Kim
- Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea
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Jung JW, Hong EH, Park EJ, Kim KJ, Kim KH. Low-Dose Oral Retinoid Combined with Topical Therapy Successfully Treats Punctate Palmoplantar Keratoderma Lesions Misdiagnosed as Corns: A Case Report. Indian J Dermatol 2021; 66:446. [PMID: 34759423 PMCID: PMC8530041 DOI: 10.4103/ijd.ijd_459_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Joon Woo Jung
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si Gyeonggi-do, South Korea. E-mail:
| | - Eun Hye Hong
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si Gyeonggi-do, South Korea. E-mail:
| | - Eun Joo Park
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si Gyeonggi-do, South Korea. E-mail:
| | - Kwang Joong Kim
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si Gyeonggi-do, South Korea. E-mail:
| | - Kwang Ho Kim
- Department of Dermatology, College of Medicine, Hallym University Sacred Heart Hospital, Anyang-si Gyeonggi-do, South Korea. E-mail:
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Abstract
The increased demands on renewable and sustainable products require enhancing the current conversion efficiency and expanding the utilization of biomass from a single component (i.e., cellulose) to entire biomass components in the biorefinery concept. Pretreatment solvent plays a critical role in various biorefinery processes. Recent pretreatment solvents such as organic co-solvents, acid hydrotropes, ionic liquids and deep eutectic solvents showed effective biomass fractionation as well as preservation of high-quality cellulose and lignin under mild conditions. Despite these significant enhancements in biomass pretreatment solvent, there are still many challenges, such as feedstock variety, valorization of non-cellulose components, and eco-friendliness of the applied catalyst and solvent. These technical, economic and environmental obstacles should be considered in future biomass pretreatment solvents. In particular, the development of feedstock-agnostic solvent with high fractionation performance for high quality and quantity of all three major components (i.e., cellulose, hemicellulose, and lignin) together would be an ideal direction.
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Kang MG, Kim KH, Park HW, Koh JS, Hwang SJ, Hwang JY, Park JR. Percutaneous coronary intervention in patients with peripheral artery disease and adverse cardiovascular adverse event and bleeding. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1149] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Peripheral artery disease (PAD) increase the risk of comorbidity and mortality in coronary artery disease (CAD).
Objectives
We evaluate influence of PAD on prognosis in patients undergoing percutaneous coronary intervention (PCI).
Methods
We analyzed all consecutive patients included in our dedicated local registry for PCI between January 2011 and December 2016. Presence of PAD was defined by decreased ankle-brachial index (<0.9). Major adverse cardiovascular event (MACE) was defined as a composite of cardiovascular death, non-fatal myocardial infarct, revascularization, and ischemic stroke. Major bleeding was defined as Bleeding Academic Research Consortium 3 or 5.
Results
Among the 4,747 patients who underwent the PCI, 12.9% (n=610) of PAD were identified. Old age (>60 years), renal dysfunction, reduced ejection fraction, and presence of PAD were predictors with both MACE and major bleeding event. Among them, presence of PAD was an independent risk factor of MACE and major bleeding (MACE, HR 8.26, 95% CI 2.33- 29.41, p=0.036; major bleeding, HR 3.11, 95% CI 1.10–10.63, p=0.040, respectively). The MACE and major bleeding rate at 5-year was significantly increased in patients with PAD (MACE, 30.0% vs. 15.8%, log rank test p<0.001; major bleeding, 6.7 vs. 3.6%, log rank test p=0.003, respectively) (Figure).
Conclusion
Presence of PAD was strongly associated with higher rate of long-term MACE and major bleeding. These findings could have a clinical relevance in requiring individualized pharmacologic strategies to reduce the burden of cardiovascular disease.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M G Kang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - K H Kim
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - H W Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J S Koh
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - S J Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J Y Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J R Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
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Kang MG, Kim KH, Park HW, Koh JS, Park JR, Park YH, Hwang SJ, Jeong YH, Kwak CH, Ahn JH, Song HN, Hwang JY. Impact of active and stable cancer on survival in patients undergoing percutaneous coronary intervention. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2858] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
With advances in treatment of ischemic heart disease and cancer treatment, use of percutaneous coronary intervention (PCI) in cancer survivors and patients with active cancer (AC) is expanding.
Objectives
The purpose of this study was to determine the impact of cancer on survival and major cardiovascular events (MACE) in a long-term, single-center cohort of patients treated with PCI.
Methods
Patients treated with PCI between January 2010 and December 2017 were grouped as follows: controls (patients without cancer), stable cancer (SC), and AC. AC was included patients with cancer diagnosed within the past 6 months, patients who had cancer-related therapy within the past 6 months, active metastatic disease, or active recurrence of the cancer. The primary endpoints were 5-year survival and a secondary endpoint was 5-year MACE.
Results
A total of 6,743 patients (age 66±12 years, 68.4% men) treated with PCI were included: 6,404 (95.0%) controls, 245 (3.6%) SC, and 94 (1.4%) AC. Predominant malignancies were gastrointestinal (37.4%), lung (22.7%), and genitourinary cancer (14.7%). No differences were observed between patients with AC, SC and controls regarding 5-year MACE (total MACE, 33.2% vs. 28.1% vs. 17.5%, p=0.072; cardiac death, 13.6% vs. 9.1% vs. 6.7%, p=0.066; non-fatal myocardial infarction, 2.9% vs. 7.5% vs. 7.8%, p=0.820; revascularization, 17.9% vs. 17.6% vs. 11.6%, p=0.794, respectively). Patients with AC and SC had reduced 5-year survival compared with controls (62.0% vs. 81.5% vs. 89.8%, p<0.001) (Figure). AC was associated with a 1.76 (95% CI 1.22 to 2.54, p=0.002) fold increased risk of all-cause 5-year mortality in multivariable adjusted models.
Conclusions
Cumulative incidence of 5-year survival was discriminated by concurrent status of cancer following PCI. Individualized decision making is needed in the routine practice of PCI regarding concurrent cancer-specific treatment and prognosis.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M G Kang
- Gyeongsang National University Hospital, Jinju, Korea (Republic of)
| | - K H Kim
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - H W Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J S Koh
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J R Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - Y H Park
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - S J Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - Y H Jeong
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - C H Kwak
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - J H Ahn
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - H N Song
- Gyeongsang National University Hospital, Jinju, Korea (Republic of)
| | - J Y Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
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