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Woong Kim G, Yun S, Jang J, Bae Lee J, Youn Kim S. Corrigendum to "Enhanced stability, formulations, and rheological properties of nanoemulsions produced with microfluidization for eco-friendly process" [J. Coll. Int. Sci. 646 (2023) 311-319]. J Colloid Interface Sci 2024; 665:1102. [PMID: 38570206 DOI: 10.1016/j.jcis.2024.03.180] [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: 04/05/2024]
Affiliation(s)
- Geon Woong Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Seunghan Yun
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihui Jang
- Cosmax R&I Center, Building E, Pangyo Innovalley, 255 Pangyo-ro, Bundang-gu, Seongnam 13486, Korea
| | - Jun Bae Lee
- Cosmax R&I Center, Building E, Pangyo Innovalley, 255 Pangyo-ro, Bundang-gu, Seongnam 13486, Korea
| | - So Youn Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea.
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Thompson KMA, Gamble ASD, Kontro H, Lee JB, Burr JF. Low- and high-volume blood-flow restriction treadmill walking both improve maximal aerobic capacity independently of blood volume. Scand J Med Sci Sports 2024; 34:e14534. [PMID: 37961932 DOI: 10.1111/sms.14534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/22/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Abstract
AIM Assess the effect of low- and high-volume blood flow restriction training (BFR) on maximal aerobic capacity (VO2 max) and determine if alteration in VO2 max is mediated through changes in hemoglobin mass (Hbmass) and blood volume. METHODS Participants' Hbmass (CO-rebreathe), single, and double-leg VO2 max and blood volume regulating hormonal responses (renin and copeptin) were measured before and after BFR training. Training consisted of treadmill walking either (1) twice-daily for 4week (CON and BFRHV ) or (2) twice-weekly for 6week (BFRLV ). Each session consisted of five intervals (3 min, 5% incline, 5 km/h, 100% of lowest occlusion pressure), with 1 min of standing rest between sets. RESULTS VO2 max increased using both training exposures, in as quickly as 2-weeks (BFRLV baseline to 4week: +315 ± 241 mL (8.7%), p = 0.02; BFRHV baseline to 2week: +360 ± 261 mL (7.9%), p < 0.01), for the BFRLV and BFRHV groups, with no change in CON. Single- and double-leg VO2 max improved proportionately (single/double-leg VO2 max ratio: BFRLV 78 ± 4.9-78 ± 5.8%, BFRHV 79 ± 6.5-77 ± 6.5%), suggesting that the mechanism for increased VO2 max is not solely limited to central or peripheral adaptations. Hbmass remained unchanged across groups (CON: +10.2 ± 34 g, BFRLV : +6.6 ± 42 g, BFRHV : +3.2 ± 44 g; p = 0.9), despite a significant release of blood volume regulating hormones after initial BFR exposure (renin +20.8 ± 21.9 ng/L, p < 0.01; copeptin +22.0 ± 23.8 pmol/L, p < 0.01), which was blunted following BFRHV training (renin: +13.4 ± 12.4 ng/L, p = 0.09; copeptin: +1.9 ± 1.7 pmol/L, p = 0.98). CONCLUSION BFR treadmill walking increases VO2 max irrespective of changes in Hbmass or blood volume despite a large release of blood volume regulating hormones in response to BFR treadmill walking.
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Affiliation(s)
- K M A Thompson
- Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - A S D Gamble
- Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - H Kontro
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - J B Lee
- Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - J F Burr
- Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
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Lee MS, Bui HTD, Kim SJ, Lee JB, Yoo HS. Liposome-assisted penetration and antiaging effects of collagen in a 3D skin model. J Cosmet Dermatol 2024; 23:236-243. [PMID: 37415450 DOI: 10.1111/jocd.15912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 06/19/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Collagen is a major component of the extracellular matrix that supports the epidermal layers of the skin; thus, many strategies have been made to enhance the topical delivery of collagen for antiaging purposes. In addition, our previous study indicated that liposome can help the penetration of active ingredients into the skin. AIMS To produce stable collagen-encapsulated liposomes to improve the topical delivery of collagen. METHODS Collagen-encapsulated liposomes were fabricated using high-pressure homogenization method. The colloidal stability and adhesion ability were confirmed using dynamic light scattering, and spectrofluorophotometer, respectively. Keratinocyte differentiations of 3D skin before and after treatment with collagen-encapsulated liposomes were confirmed by real-time PCR. RESULTS In comparison with native collagen, collagen-encapsulated liposomes enhanced collagen retention in artificial membranes by twofold, even after repeated washings with water. In addition, real-time PCR results indicated that 3D skin treated with collagen-encapsulated liposomes exhibited higher levels of collagen, keratin, and involucrin, even after ethanol treatment. CONCLUSION Liposomes could serve as efficient delivery vehicles for collagen, thereby enhancing its antiaging effects.
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Affiliation(s)
- Mi So Lee
- Department of Biomedical Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Hoai-Thuong Duc Bui
- Department of Biomedical Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Su Ji Kim
- Innovation Lab., Cosmax R&I Center, Seongnam-si, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, Seongnam-si, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Science, Kangwon National University, Chuncheon, Republic of Korea
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Lee JH, Hwang YH, Noh M, Lee JH, Lee JB, Lee H. Microencapsulation of alcohol solvents and high-content actives for efficient transdermal delivery. Biomater Sci 2023; 11:7531-7540. [PMID: 37818665 DOI: 10.1039/d3bm01411h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The barrier function of the skin in effectively protecting the underlying tissue from the surrounding environment makes it challenging to achieve the efficient transdermal delivery of actives. Herein, we report on alcohol-solvent-encapsulated microcapsules to achieve enhanced skin efficacy. We show that using palm oil as the shell material allows for the microencapsulation of a broad range of alcohol solvents, including ethanol and dipropylene glycol (DPG), as well as on-demand release. Moreover, clinical trials reveal that the high-content actives in microcapsules result in enhanced skin efficacy, and the presence of DPG effectively mediates the transdermal delivery of these actives without causing any skin irritation. We envision that the alcohol-solvent microencapsulation strategy outlined in this work offers new possibilities in cosmetics, food, and drug delivery systems.
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Affiliation(s)
- Je Hyun Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
| | - Yoon-Ho Hwang
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
| | - Minjoo Noh
- Innovation Lab. Cosmax R&I Center, Seongnam 13486, Republic of Korea.
| | - Ji Hyun Lee
- Innovation Lab. Cosmax R&I Center, Seongnam 13486, Republic of Korea.
| | - Jun Bae Lee
- Innovation Lab. Cosmax R&I Center, Seongnam 13486, Republic of Korea.
| | - Hyomin Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
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Kim GW, Yun S, Jang J, Lee JB, Kim SY. Enhanced stability, formulations, and rheological properties of nanoemulsions produced with microfludization for eco-friendly process. J Colloid Interface Sci 2023; 646:311-319. [PMID: 37201459 DOI: 10.1016/j.jcis.2023.05.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023]
Abstract
HYPOTHESIS Eco-friendly processes that are emerging around the world require mass production of low-energy, low-cost nanoemulsions. The process involving the high-concentrated nanoemulsions and diluting them with a large amount of solvent can certainly save the cost; however, not much detailed research has been conducted on the stability mechanism and rheological characteristics of high-concentrated nanoemulsions. EXPERIMENTS In this study, we produced nanoemulsions via the microfluidization (MF) process, comparing their dispersion stability and rheological characteristics with macroemulsions across various oil and surfactant concentrations. Droplet mobility and dispersion stability depended on these concentrations, with Asakura-Osawa-type attractive depletion considering interparticle interaction's role in stability changes. We investigated nanoemulsions' long-term stability based on turbidity and droplet size changes over four weeks, proposing a stability diagram showing four different states depending on emulsification conditions. FINDINGS We explored the microstructure of emulsions under varying mixing conditions, observing their effects on droplet mobility and rheological properties. We monitored changes in rheology, turbidity, and droplet size over 4 weeks, establishing stability diagrams for macro- and nanoemulsions. The stability diagrams revealed that the stability of emulsions are sensitively dependent on the droplet size, concentrations, surfactant cocentrations and the strcture of coexistent phases in case of macroscopic segregation are significantly different depending on the droplet sizes. We identified their respective stability mechanisms and discovered the relationship between stability and rheological properties for highly concentrated nanoemulsion.
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Affiliation(s)
- Geon Woong Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Seunghan Yun
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihui Jang
- Cosmax R&I Center, Building E, Pangyo Innovalley, 255 Pangyo-ro, Bundang-gu, Seongnam 13486, Korea
| | - Jun Bae Lee
- Cosmax R&I Center, Building E, Pangyo Innovalley, 255 Pangyo-ro, Bundang-gu, Seongnam 13486, Korea
| | - So Youn Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea.
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Koo BI, Rahman RT, Jang J, Lee DJ, Lee JB, Nam YS. Highly Robust Multilamellar Lipid Vesicles Generated through Intervesicular Self-Assembly Mediated by Hydrolyzed Collagen Peptides. Biomacromolecules 2023. [PMID: 37283006 DOI: 10.1021/acs.biomac.3c00122] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Despite the well-known advantages of lipid vesicles for drug and gene delivery, structural instability limits their practical applications and requires strictly regulated conditions for transport and storage. Chemical crosslinking and in situ polymerization have been suggested to increase the membrane rigidity and dispersion stability of lipid vesicles. However, such chemically modified lipids sacrifice the dynamic nature of lipid vesicles and obfuscate their in vivo metabolic fates. Here, we present highly robust multilamellar lipid vesicles through the self-assembly of preformed, cationic large unilamellar vesicles (LUVs) with hydrolyzed collagen peptides (HCPs). The cationic LUVs undergo vesicle-to-vesicle attachment and structural reorganization through polyionic complexation with HCPs, resulting in the formation of multilamellar collagen-lipid vesicles (MCLVs). The resulting MCLVs exhibit excellent structural stability against variations in pH and ionic strength and the addition of surfactants. Particularly, the MCLVs maintain their structural stability against repeated freeze-thaw stresses, proving the unprecedented stabilization effect of biological macromolecules on lipid lamellar structures. This work provides a practically attractive technique for the simple and quick fabrication of structurally robust lipid nanovesicles without covalent crosslinkers, organic solvents, and specialized instruments.
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Affiliation(s)
- Bon Il Koo
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Rafia Tasnim Rahman
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Jihui Jang
- Innovation Lab, Cosmax Research & Innovation Center, 662 Sampyong-dong, Bundang-gu, Seongnam, Gyeonggi-do 13486, Republic of Korea
| | - Dong Jae Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab, Cosmax Research & Innovation Center, 662 Sampyong-dong, Bundang-gu, Seongnam, Gyeonggi-do 13486, Republic of Korea
| | - Yoon Sung Nam
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
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Yoon JH, Park SH, Yoon SE, Hong SY, Lee JB, Lee J, Cho JY. Hydrangea serrata Hot Water Extract and Its Major Ingredient Hydrangenol Improve Skin Moisturization and Wrinkle Conditions via AP-1 and Akt/PI3K Pathway Upregulation. Nutrients 2023; 15:nu15112436. [PMID: 37299400 DOI: 10.3390/nu15112436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 06/12/2023] Open
Abstract
Hydrangea serrata is a plant grown in Korea and Japan with a particular natural compound, hydrangenol. H. serrata has been researched for its anti-fungal properties, and ability to attenuate allergies and promote muscle growth. Its ability to reduce skin dryness is poorly understood. For that reason, we investigated whether H. serrata hot water extracts (Hs-WE) can moisturize keratinocytes. In clinical studies (Approval Code: GIRB-21929-NY and approval Date: 5 October 2021), skin wrinkles and skin moisturizing levels were improved in subjects applying 0.5% Hs-WE compared to the placebo group. We confirmed the components of Hs-WE from the LC/MS-MS analysis. Hs-WE and hydrangenol did not show cytotoxicity in HaCaT cells at all concentrations. Cell growth was also promoted by Hs-WE (5-20 µg/mL) and hydrangenol (15-60 µM) in a wound healing assay. Skin moisturizing factors were upregulated by the presence of Hs-WE or hydrangenol, and the hyaluronidases (HYAL) were inhibited at the mRNA level. Meanwhile, COL1A1 was increased by the presence of Hs-WE or hydrangenol. MAPK, AP-1, and Akt/PI3k signaling proteins, which are associated with cell proliferation and moisturizing factors, were increased by the administration of Hs-WE and hydrangenol. Has-1, 2, and 3 levels were enhanced via JNK when using the inhibitors of MAPK proteins and Hs-WE and hydrangenol, respectively. Taken together, Hs-WE could be used as cosmeceutical materials for improving skin conditions.
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Affiliation(s)
- Ji Hye Yoon
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang Hee Park
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Si Eun Yoon
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seong Yoon Hong
- Innovation Lab., Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Jongsung Lee
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Youl Cho
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
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Shin K, Lee KB, Hwang JH, Lee B, Ryu H, Noh M, Lee JB, Nam YS, Lim KM, Kim JW. Multilamellar ceramide core-structured microvehicles with substantial skin barrier function recovery. J Mater Chem B 2023; 11:2135-2144. [PMID: 36762491 DOI: 10.1039/d2tb02734h] [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: 02/08/2023]
Abstract
This study introduces a multilamellar ceramide core-structured microvehicle platform for substantial skin barrier function recovery. Our approach essentially focused on fabricating bacterial cellulose nanofiber (BCNF)-enveloped ceramide-rich lipid microparticles (CerMPs) by solidifying BCNF-armored oil-in-water Pickering emulsions. The oil drops consisted of Ceramide NP (a phytosphingosine backbone N-acylated with a saturated stearic acid) and fatty alcohols (FAs) with a designated stoichiometry. The thin BCNF shell layer completely blocked the growth of ceramide molecular crystals from the CerMPs for a long time. The CerMP cores displayed a multilamellar structure wherein the interlayer distance and lateral packing could be manipulated using FAs with different alkyl chain lengths. The CerMPs remarkably lowered the trans-epidermal water loss while restoring the structural integrity of the epidermis in damaged skin. The results obtained herein highlight that the CerMP system provides a practical methodology for developing various types of skin-friendly formulations that can strengthen the skin barrier function.
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Affiliation(s)
- Kyounghee Shin
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Kun Bong Lee
- Interdisciplinary Program in Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jee-Hyun Hwang
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea.
| | - Boryeong Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Hyunsun Ryu
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Minjoo Noh
- Innovation Lab, Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab, Cosmax R&I Center, Seongnam 13486, Republic of Korea
| | - Yoon Sung Nam
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea.
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
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Lee JB, Choi JS. Healthcare workers' epidemiology of occupational exposure to blood-borne viruses, post-exposure prophylaxis, and seroconversion over 10 years. J Hosp Infect 2023; 135:18-27. [PMID: 36805081 DOI: 10.1016/j.jhin.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/25/2023] [Accepted: 02/06/2023] [Indexed: 02/19/2023]
Abstract
BACKGROUND Healthcare workers (HCWs) have an increased risk of blood-borne pathogen (BBP) infection due to occupational blood exposures (OBEs). Early reporting, detection, and post-exposure prophylaxis (PEP) allows for prevention of infections. AIM To investigate the incidence of OBEs, related epidemiological characteristics, PEP completion rate, time and reason for PEP discontinuation, and seroconversion rate reported over 10 years. METHODS We retrospectively analysed 1,086 OBE cases and staff PEP management from January 2012 to December 2021 in a South Korean tertiary hospital. FINDINGS The mean incidence of OBE was 7.82 per 100 beds and 3.0 per 100 HCWs. Among 1,086 cases, 633 (58.3%) required PEP, and 453 (41.7%) did not. After OBEs, 70.1% (444/633) of those subject to PEP completed tracking, and 29.9% (189/633) stopped PEP tracking (p < 0.001). The PEP completion rate showed a significant difference according to gender (p = 0.024), occupation (p < 0.001), and exposure frequency (p < 0.001). None of the 444 HCWs who completed PEP seroconverted to hepatitis B virus, hepatitis C virus, human immunodeficiency virus, or Treponema pallidum (syphilis). CONCLUSION Our findings demonstrate the need to improve follow-up care among HCWs following OBEs. There is a need for education in healthcare facilities; moreover, establishing a national surveillance system is necessary to ensure that HCWs proactively undergo PEP and complete their follow-up visits.
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Affiliation(s)
- J B Lee
- Gachon University Gil Hospital, Incheon, South Korea
| | - J S Choi
- Gachon University College of Nursing, Incheon, South Korea.
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Hassan NM, Lee JB. RADIOLOGICAL IMPACT OF USING DECORATIVE GRANITE AS AN ATTENUATOR OF IONIZING RADIATION. Radiat Prot Dosimetry 2023; 199:11-19. [PMID: 36309854 DOI: 10.1093/rpd/ncac213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 08/03/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Granite is a widely available rock, which can be used as a shielding material, for bulk in the form of the aggregate in concrete. It has the weakness that it is more radioactive than many other rocks, which can be used in concrete. This paper looks at its properties as a shielding material and the activity level. Thus, the concentrations of 226Ra, 232Th and 40K, in granite were measured using a high pure germanium detector (HPGe). They were ranged from (15 ± 4 to 49 ± 5) Bq kg-1 for 226Ra, (22 ± 4 to 78 ± 4 Bq kg-1) for 232Th and (791 ± 13 to 1231 ± 15 Bq kg-1) for 40K. Radiological indices of radium equivalent concentration (Raeq), external (Hex), internal (Hin) and annual effective dose were less than worldwide recommended limits. The results emphasized, the granite samples had no radiation hazard. Nevertheless, the mass attenuation coefficients of granite samples were measured for the gamma rays of energy range 122-1408 keV. The mass attenuation coefficients of the studied granite samples were ranged from 0.05 to 0.15 cm2 g-1. In addition, the average the half-value layer of granite was varied from 1.8 cm for 122 keV to 5.2 cm for 1408 keV. The results are that the attenuation characteristics are typical and match the values given by NIST for 'concrete' and that the activity levels of the samples examined are acceptable. Thus the granite may be used as an attenuator for ionizing radiation.
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Affiliation(s)
- Nabil M Hassan
- Department of Physics, Faculty of Science, Zagazig University, PO Box 44519, Zagazig, Egypt
- Department of Physics, Faculty of Science, University of Bahrain, PO Box 32038, Zallaq, Kingdom of Bahrain
| | - J B Lee
- Department of Nuclear and Radiation Safety, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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Lee MS, Kim SJ, Lee JB, Yoo HS. Clinical evaluation of the brightening effect of chitosan-based cationic liposomes. J Cosmet Dermatol 2022; 21:6822-6829. [PMID: 36052771 DOI: 10.1111/jocd.15350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/22/2022] [Accepted: 08/31/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND Cationic liposomes can enhance the permeability of drugs in 3-D skin. Chitosan is considered a safe material for percutaneous delivery; thus, this study uses chitosan-incorporated cationic liposomes. AIMS This study investigated the improvement in skin brightness, melanin, and melasma after treatment niacinamide-incorporated chitosan cationic liposomes. METHODS A skin brightening agent, niacinamide, was formulated into cationic liposomes to facilitate percutaneous absorption and was clinically tested in 21 Korean female subjects. Cationic liposomes were prepared using a high-pressure homogenizer after mixing an oil phase containing lecithin and cholesterol and an aqueous phase containing niacinamide and chitosan. RESULTS The cationic liposomes exhibited stability over 28 days, with a particle size of 255-275 nm and zeta potential of 10-14 mV. Cationic liposomes containing niacinamide and a control formulation were applied to the left and right side of the face, respectively, twice daily for 28 days. Skin brightness, melanin index, and area of melasma were significantly enhanced where cationic liposomes were used, in comparison with formulations without cationic liposomes, demonstrating a 1.38-2.08-fold improvement. CONCLUSION Thus, we established that chitosan liposomes augmented the percutaneous absorption of niacinamide and improved the appearance of the skin.
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Affiliation(s)
- Mi So Lee
- Department of Biomedical Science, Kangwon National University, Chuncheon, Korea
| | - Su Ji Kim
- Innovation Lab., Cosmax R&I Center, Seongnam-si, Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, Seongnam-si, Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Science, Kangwon National University, Chuncheon, Korea.,Kangwon Institute of Inclusive Technology (KIIT), Kangwon National University, Chuncheon, Korea
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Yang J, Song J, Kim SJ, You G, Lee JB, Mok H. Chronic infrared-A irradiation-induced photoaging of human dermal fibroblasts from different donors at physiological temperature. Photodermatol Photoimmunol Photomed 2022; 38:571-581. [PMID: 35437847 DOI: 10.1111/phpp.12793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 04/05/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND In this study, we examined cellular responses to acute and chronic IRA irradiation at mild and natural levels of exposure in two types of human fibroblasts, each isolated from a different donor, at physiological temperature (34°C). METHOD Two types of human dermal fibroblasts (derived from a 20- and 50-year-old women, respectively) were exposed to different repeat numbers of IRA exposure (3, 6, 10, and 14 times; 42 mW/cm2 ) at a frequency of 3-4 times per week (4 h per irradiation). Cellular responses to acute and chronic IRA irradiation were examined by reactive oxygen species (ROS) level, apoptotic signals, cellular morphology, and collagen level. RESULTS We demonstrated that chronic IRA irradiation-induced severe cellular damage, including prolonged cell proliferation, increased intracellular ROS levels, activated cellular apoptosis, and elongated cell morphology, whereas acute IRA irradiation had negligible effects at 34°C. In addition, it was evident that the degree of cellular damage due to IRA irradiation differed according to the type of fibroblasts. CONCLUSIONS Considering the severe cellular damage induced by chronic IRA irradiation without heat, continuous exposure of skin to IRA irradiation during daily life may be harmful enough to induce photoaging.
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Affiliation(s)
- Jiwon Yang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea
| | - Jihyeon Song
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea
| | | | - Gayeon You
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea
| | | | - Hyejung Mok
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea
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13
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Kim CM, Lee JB, Shin SJ, Ahn JB, Lee M, Kim HS. The efficacy of immune checkpoint inhibitors in elderly patients: a meta-analysis and meta-regression. ESMO Open 2022; 7:100577. [PMID: 36156450 PMCID: PMC9588901 DOI: 10.1016/j.esmoop.2022.100577] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/03/2022] [Accepted: 08/02/2022] [Indexed: 12/15/2022] Open
Abstract
Background Immune checkpoint inhibitor (ICI) therapy has improved patient survival in advanced cancers; however, the efficacy of ICIs in elderly patients is still elusive. This study assessed the efficacy of ICIs in elderly patients with advanced cancer in terms of overall survival (OS) and progression-free survival (PFS). Materials and methods We carried out a systematic review and identified 30 head-to-head phase II/III randomized controlled trials that compared immunotherapy with the standard of care in advanced solid tumor patients. The data on patients younger or over 65 years of age were indexed from PubMed-Medline, Embase, and Scopus and obtained for meta-analysis. The subgroup analyses were stratified by primary tumor type, line of treatment, or type of immunotherapy, and a meta-regression analysis was carried out after adjusting for all other variables. Results The study included 17 476 patients, comprising 58% (10 119) younger (<65 years old) and 42% (7357) elderly (≥65 years old) patients. The hazard ratio (HR) for OS was 0.77 [95% confidence interval (CI) 0.70-0.85] and 0.77 (95% CI 0.70-0.85) in the younger and elderly groups, respectively, suggesting similar efficacies of ICIs in these two age groups. The subgroup analyses revealed no significant relationship between age and treatment outcomes, except for the PFS benefit in younger patients with melanoma than in elderly patients (HR 0.44 in younger patients versus 0.65 in elderly patients, P = 0.04). These results were further supported by meta-regression analysis, which showed no statistically significant difference in OS (P = 0.954) and PFS (P = 0.555) between the two age groups. Conclusions The findings suggest that age-associated impairments of the immune system did not affect the efficacy of ICIs in elderly patients compared to younger patients. Therefore, the choice of ICIs for elderly patients can be considered, regardless of chronological age. We evaluated the efficacy of ICI in 17 476 patients, comprising 58% younger and 42% elderly patients. Meta-analysis resulted in the comparable efficacy of ICI between younger and older age groups. Further, meta-regression analysis showed no significant difference in OS and PFS. Our study suggests that chronological age does not lead to immunosenescence in response to ICI in immune-oncology.
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Affiliation(s)
- C M Kim
- Yonsei University College of Medicine, Seoul
| | - J B Lee
- Lung Cancer Clinic, Yonsei Cancer Center, Severance Hospital, Seoul
| | - S J Shin
- Yonsei Cancer Center, Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul
| | - J B Ahn
- Yonsei Cancer Center, Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul
| | - M Lee
- Biostatistics Collaboration Unit, Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul.
| | - H S Kim
- Yonsei Cancer Center, Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul; Graduate School of Medical Science, Brain Korea 21 Project, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.
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14
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Lee J, Noh M, Jang J, Lee JB, Hwang YH, Lee H. Skin Penetration Enhancer-Incorporated Lipid Nanovesicles (SPE-LNV) for Skin Brightening and Wrinkle Treatment. ACS Appl Mater Interfaces 2022; 14:36331-36340. [PMID: 35917318 DOI: 10.1021/acsami.2c07135] [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] [Indexed: 06/15/2023]
Abstract
In this work, we utilize skin penetration enhancers (SPEs) such as ceramide and fatty acids in lipid nanovesicles to promote the transdermal delivery of active ingredients. These SPE-incorporated lipid nanovesicles (SPE-LNV) interact with the constituents of skin's outermost stratum corneum (SC) layer, enabling even niacinamide and adenosine with high water solubility to effectively permeate through, leading to enhanced skin efficacy. We demonstrate by both in vitro and in vivo skin permeation studies that the SPE-LNV formulation containing both ceramide and fatty acids (LNV-CF) exhibits deeper penetration depth and faster permeation rate compared to conventional lipid nanovesicles (LNV) without SPE as well as LNV-C with only ceramide. Moreover, in vivo clinical trials were also performed to confirm that LNV-CF most effectively mediates the delivery of niacinamide and adenosine, resulting in a substantial decrease in melanin index as well as skin wrinkle compared to the control groups. We envision that the strategy of incorporating both ceramide and fatty acids in lipid nanovesicles offers a simple and convenient route for the rapid and effective delivery of water-soluble active ingredients across the skin barrier layer.
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Affiliation(s)
- Jihyun Lee
- Innovation Lab., Cosmax R&I Center, 255 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, South Korea
| | - Minjoo Noh
- Innovation Lab., Cosmax R&I Center, 255 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, South Korea
| | - Jihui Jang
- Innovation Lab., Cosmax R&I Center, 255 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, South Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, 255 Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 13486, South Korea
| | - Yoon-Ho Hwang
- Department of Chemical Engineering, Soft Matter and Functional Interfaces Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Hyomin Lee
- Department of Chemical Engineering, Soft Matter and Functional Interfaces Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
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15
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Lee JB, Choi JS. The effect of an isolation-coping programme on patients isolated for colonization or infection with multidrug-resistant organisms: a quasi-experimental study. J Hosp Infect 2022; 129:31-37. [PMID: 35987316 DOI: 10.1016/j.jhin.2022.08.002] [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: 06/20/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND The global increase in the prevalence of vancomycin-resistant enterococci (VRE) and carbapenem-resistant Enterobacterales (CRE) among multidrug-resistant organisms (MDROs) has necessitated contact precaution and isolation in medical institutions. Contact isolation has a negative effect on the mental health of patients, but few interventions have addressed this issue. AIM This study evaluated an isolation-coping programme developed for patients colonized or infected with VRE or CRE. METHODS To mitigate the negative effects of isolation due to having MDRO, an infection control nurse in the present study 1) developed an isolation-coping programme and 2) validated the programme's effect on the uncertainty, anxiety, depression, and knowledge of patients isolated because of MDRO (VRE or CRE) using a pre-post quasi-experimental design. FINDINGS The experimental group (n=56) received education and emotional support via the isolation-coping programme, while the control group (n=55) received only verbal isolation guidelines provided by the medical institution. Compared with the control group, the experimental group showed a reduction in uncertainty (t=-8.925), anxiety (Z=-6.131), and depression (Z=-5.379), and better knowledge (Z=-8.372) (p<.001 for all). CONCLUSION The novel isolation-coping programme is an effective intervention to improve uncertainty, anxiety, depression, and knowledge in patients isolated with VRE or CRE.
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Affiliation(s)
- J B Lee
- Gachon University Gil Hospital, Incheon, South Korea
| | - J S Choi
- Gachon University College of Nursing, Incheon, South Korea.
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16
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Han SJ, Noh M, Jang J, Lee JB, Kim KS. Cover Image, Volume 236, Number 11, November 2021. J Cell Physiol 2021. [DOI: 10.1002/jcp.30602] [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: 11/06/2022]
Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School Kyung Hee University Seoul Korea
- Department of Biomedical Engineering Kyung Hee University Seoul Korea
| | - Minjoo Noh
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Jihui Jang
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Jun Bae Lee
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering Kyung Hee University Seoul Korea
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17
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Kim KJ, Kim IS, Oh SH, Lee SM, Lee HJ, Kang SH, Lee JB, Ryu YL, Chang CL. Evaluation of an automated specimen processing system for staining and culture for acid-fast bacilli. Int J Tuberc Lung Dis 2021; 25:677-679. [PMID: 34330357 DOI: 10.5588/ijtld.21.0206] [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: 11/10/2022] Open
Affiliation(s)
- K J Kim
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - I-S Kim
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - S-H Oh
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - S M Lee
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - H-J Lee
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - S H Kang
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - J B Lee
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Y L Ryu
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - C L Chang
- Department of Laboratory Medicine, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
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18
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Ryu SA, Hwang YH, Oh H, Jeon K, Lee JH, Yoon J, Lee JB, Lee H. Biocompatible Wax-Based Microcapsules with Hermetic Sealing for Thermally Triggered Release of Actives. ACS Appl Mater Interfaces 2021; 13:36380-36387. [PMID: 34255487 DOI: 10.1021/acsami.1c04652] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present a microfluidic approach that utilizes temperature-responsive and biocompatible palm oil as the shell material in microcapsules to simultaneously achieve hermetic sealing as well as on-demand temperature-triggered release of the encapsulated actives. Unlike common paraffin waxes (e.g., eicosane), microcapsule shells comprising palm oil do not form pores or cracks during freezing and provide a hermetic seal, a nearly perfect seal that separates the core containing the actives from the surrounding environment over a prolonged period of time. This allows effective isolation and protection of complex cargoes such as small molecules with high diffusivity, strong acids, and cosmetic actives including niacinamide. Moreover, the palm oil shell melts above the defined melting temperature, allowing the on-demand release of the encapsulated actives. Furthermore, palm oil is biocompatible, is edible, and leaves a minimal footprint when used in personal care and cosmetic products, offering new perspectives in the design of microcapsules for cosmetic applications.
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Affiliation(s)
- Sang A Ryu
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Yoon-Ho Hwang
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Heemuk Oh
- Research and Innovation Center, Cosmax Inc., Seongnam, Gyeonggi-do 13486, South Korea
| | - Kyounghee Jeon
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Je Hyun Lee
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Jongsun Yoon
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
| | - Jun Bae Lee
- Research and Innovation Center, Cosmax Inc., Seongnam, Gyeonggi-do 13486, South Korea
| | - Hyomin Lee
- Soft Matter and Functional Interfaces Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, South Korea
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19
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Han SJ, Noh M, Jang J, Lee JB, Kim KS. Electric fields regulate cellular elasticity through intracellular Ca 2+ concentrations. J Cell Physiol 2021; 236:7450-7463. [PMID: 33993476 DOI: 10.1002/jcp.30417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 04/25/2021] [Accepted: 04/28/2021] [Indexed: 11/06/2022]
Abstract
Cellular elasticity is a key factor related to a broad range of physiological and pathological processes. The elasticity of a single cell has thus emerged as a potential biomarker to characterize the cellular state. Both internal and external stimuli affect cellular elasticity, and changes in elasticity can cause alterations in cellular characteristics or function. The application of electric fields (EFs) is a promising method that can be used to change cellular elasticity; however, the mechanisms underlying its effect remain unknown. Here, we demonstrate EFs-induced elasticity changes in human dermal fibroblasts and discuss the underlying mechanism related to actin polymerization. Cellular elasticity increases after EF (50 mV/mm) stimulation, reaching a maximum at 30 min before decreasing between 30 and 120 min. The cellular elasticity under EF stimulation, regardless of stimulation time, is higher than that of the control. F-actin regulates the elasticity of cells through gelsolin activation. We show changes in intracellular Ca2+ caused by EFs, which induced gelsolin activation and F-actin content changes. This result demonstrates a series of processes in which external electrical stimulation conditions regulate cellular elasticity.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea.,Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
| | - Minjoo Noh
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jihui Jang
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jun Bae Lee
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
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20
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Lee MS, Lee JW, Kim SJ, Pham‐Nguyen O, Park J, Park JH, Jung YM, Lee JB, Yoo HS. Comparison Study of the Effects of Cationic Liposomes on Delivery across 3D Skin Tissue and Whitening Effects in Pigmented 3D Skin. Macromol Biosci 2021. [DOI: 10.1002/mabi.202170010] [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: 11/07/2022]
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21
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El-Domyati M, El-Din WH, Rezk AF, Chervoneva I, Lee JB, Farber M, Uitto J, Igoucheva O, Alexeev V. Systemic CXCL10 is a predictive biomarker of vitiligo lesional skin infiltration, PUVA, NB-UVB and corticosteroid treatment response and outcome. Arch Dermatol Res 2021; 314:275-284. [PMID: 33866437 DOI: 10.1007/s00403-021-02228-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 06/23/2020] [Revised: 02/24/2021] [Accepted: 04/03/2021] [Indexed: 10/21/2022]
Abstract
Vitiligo is an acquired pigmentary skin disorder that currently lacks standardized treatment and validated biomarkers to objectively evaluate disease state or therapeutic response. Although prior studies have linked vitiligo autoimmunity with CXCL10/CXCL9-mediated recruitment of leukocytes to the skin, only limited clinical data are available regarding CXCL10 as vitiligo biomarker. To evaluate the utility of systemic CXCL10 as a predictor of disease progression and treatment response on a large cohort of vitiligo patients. CXCL10 levels in lesional, perilesional, and unaffected skin of vitiligo patient (n = 30) and in the serum (n = 51) were measured by quantitative ELISA. CXCL10 expression, recruitment of leukocytes, and inflammatory infiltrates were evaluated by histochemical (n = 32) and immunofluorescence (n = 10) staining. Rigorous cross-sectional and longitudinal biostatistical analysis were employed to correlate CXCL10 levels with disease variables, treatment response, and outcome. We demonstrated that elevated CXCL10 level (2 pg/mm2 and higher) in lesional skin correlates with increased leukocytic infiltrate, disease duration (< 2 year), and its higher level in the serum (50 pg/ml and higher). Changes in CXCL10 serum levels in patients treated with psoralen plus UVA (PUVA) phototherapy, narrowband UVB (NB-UVB) phototherapy, and systemic steroids (SS) correlated with changes in the intralesional CXCL10 levels in repigmented skin. NB-UVB and SS regimens provided most consistent CXCL10 mean change, suggesting that these regimens are most effective in harnessing CXCR3-mediated inflammatory response. Serum CXCL10 is a useful vitiligo biomarker, which predicts lesional skin leukocytic infiltration, and vitiligo treatment response and outcome.
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Affiliation(s)
- M El-Domyati
- Department of Dermatology, STDs and Andrology At Minia University, Minia, Egypt.
| | - W H El-Din
- Department of Dermatology, STDs and Andrology At Minia University, Minia, Egypt
| | - A F Rezk
- Department of Dermatology, STDs and Andrology At Minia University, Minia, Egypt.,Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA
| | - I Chervoneva
- Department of Pharmacology and Experimental Therapeutics, Division of Biostatistics, Thomas Jefferson University, 1015 Chestnut Street, Philadelphia, PA, 19107, USA
| | - J B Lee
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA
| | - M Farber
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA
| | - J Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA
| | - O Igoucheva
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA
| | - Vitali Alexeev
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, BLSB, Suite 430, Philadelphia, PA, 19107, USA.
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22
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Lee MS, Lee JW, Kim SJ, Pham-Nguyen OV, Park J, Park JH, Jung YM, Lee JB, Yoo HS. Comparison Study of the Effects of Cationic Liposomes on Delivery across 3D Skin Tissue and Whitening Effects in Pigmented 3D Skin. Macromol Biosci 2021; 21:e2000413. [PMID: 33713560 DOI: 10.1002/mabi.202000413] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/18/2021] [Indexed: 11/09/2022]
Abstract
Charged phospholipids are employed to formulate liposomes with different surface charges to enhance the permeation of active ingredients through epidermal layers. Although 3D skin tissue is widely employed as an alternative to permeation studies using animal skin, only a small number of studies have compared the difference between these skin models. Liposomal delivery strategies are investigated herein, through 3D skin tissue based on their surface charges. Cationic, anionic, and neutral liposomes are formulated and their size, zeta-potential, and morphology are characterized using dynamic light scattering and cryogenic-transmission electron microscopy (cryo-TEM). A Franz diffusion cell is employed to determine the delivery efficiency of various liposomes, where all liposomes do not exhibit any recognizable difference of permeation through the synthetic membrane. When the fluorescence liposomes are applied to 3D skin, considerable fluorescence intensity is observed at the stratum cornea and epithelium layers. Compared to other liposomes, cationic liposomes exhibit the highest fluorescence intensity, suggesting the enhanced permeation of liposomes through the 3D skin layers. Finally, the ability of niacinamide (NA)-incorporated liposomes to suppress melanin transfer in pigmented 3D skin is examined, where cationic liposomes exhibit the highest degree of whitening effects.
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Affiliation(s)
- Mi So Lee
- Department of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Ju Won Lee
- Department of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Su Ji Kim
- Innovation Lab., Cosmax R&I Center, Seongnam-si, 13486, Republic of Korea
| | - Oanh-Vu Pham-Nguyen
- Department of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Jongmin Park
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Ju Hyun Park
- Department of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Young Mee Jung
- Department of Chemistry, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Jun Bae Lee
- Innovation Lab., Cosmax R&I Center, Seongnam-si, 13486, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
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Kim SJ, Lee HJ, Lee JH, Oh H, Park S, Lim DH, Park MS, Lee JB. In vivo determination of the Infrared-A protection factor on human skin. Skin Res Technol 2021; 27:814-823. [PMID: 33665925 DOI: 10.1111/srt.13026] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 02/13/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND Chronic exposure to infrared A (IR-A) irradiation causes photoaging. However, daily or acute exposure to IR-A rarely induces erythema or pigmentation. Thus, evaluation of the physiological changes taking place on the skin surface is insufficient for clinical investigations. MATERIALS AND METHODS We fabricated a novel device to obtain the IR-A protection factor (IPF) on human skin. This device consists of an artificial light source that mimics the actual IR-A intensity of sunlight, and a spectrophotometer to measure the spectral reflectance on the skin surface. The IPF can be determined by measuring the difference in spectral reflectance on the skin before and after the use of products and can be verified by the statistical criterion. A validation study was performed using different light intensities and two experimenters. Finally, we monitored the IPF on 12 commercial cosmetics. RESULTS After considering the IPF and L*-values, we selected the optimal sample and performed a validation study. Neither the intensity of IR-A irradiation or the experimenters significantly affected the IPF. 12 commercial products exhibited their own IPF values and were verified by statistical criteria, with one exception. CONCLUSION The present IPF evaluation method was concluded to be robust and reliable. This method is simple and safe for the subjects, and could be helpful for the development of IR-A protection products and the confirmation of product performances.
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24
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Kim YJ, Lee JE, Jang HS, Hong SY, Lee JB, Park SY, Hwang JS. Oleanolic Acid Protects the Skin from Particulate Matter-Induced Aging. Biomol Ther (Seoul) 2021; 29:220-226. [PMID: 32952129 PMCID: PMC7921861 DOI: 10.4062/biomolther.2020.106] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/21/2020] [Accepted: 08/28/2020] [Indexed: 12/27/2022] Open
Abstract
The role of particulate matter (PM) in health problems including cardiovascular diseases (CVD) and pneumonia is becoming increasingly clear. Polycyclic aromatic hydrocarbons, major components of PM, bind to aryl hydrocarbon receptor (AhRs) and promote the expression of CYP1A1 through the AhR pathway in keratinocytes. Activation of AhRs in skin cells is associated with cell differentiation in keratinocytes and inflammation, resulting in dermatological lesions. Oleanolic acid, a natural component of L. lucidum, also has anti-inflammation, anticancer, and antioxidant characteristics. Previously, we found that PM10 induced the AhR signaling pathway and autophagy process in keratinocytes. Here, we investigated the effects of oleanolic acid on PM10-induced skin aging. We observed that oleanolic acid inhibits PM10-induced CYP1A1 and decreases the increase of tumor necrosis factor–alpha and interleukin 6 induced by PM10. A supernatant derived from keratinocytes cotreated with oleanolic acid and PM10 inhibited the release of matrix metalloproteinase 1 in dermal fibroblasts. Also, the AhR-mediated autophagy disruption was recovered by oleanolic acid. Thus, oleanolic acid may be a potential treatment for addressing PM10-induced skin aging.
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Affiliation(s)
- Youn Jin Kim
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin 17104, Republic of Korea
| | - Ji Eun Lee
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin 17104, Republic of Korea
| | - Hye Sung Jang
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin 17104, Republic of Korea
| | - Sung Yun Hong
- COSMAX R&I Center, Seongnam 13486, Republic of Korea
| | - Jun Bae Lee
- COSMAX R&I Center, Seongnam 13486, Republic of Korea
| | - Seo Yeon Park
- Creative & Innovation Center, IN2BIO, Hwaseong 18471, Republic of Korea
| | - Jae Sung Hwang
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin 17104, Republic of Korea
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25
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Oh H, Kikuchi H, Lee JH, Kim SJ, Lee JB, Cho MS, Lee MY, Okumura Y, Hong JH, Hong SK. Ultraviolet light screen using cholesteric liquid crystal capsules on the basis of selective reflection. RSC Adv 2021; 11:25471-25476. [PMID: 35478880 PMCID: PMC9037046 DOI: 10.1039/d1ra03499e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/06/2021] [Indexed: 11/21/2022] Open
Abstract
When the prepared cholesteric liquid crystal microcapsule is applied to the skin, it can protect the skin by selectively reflecting only ultraviolet rays in sunlight like sunscreen cosmetics.
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Affiliation(s)
- Heemuk Oh
- Department of Chemical & Biochemical Engineering
- Dongguk University-Seoul
- Seoul
- Republic of Korea
- Cosmax Inc
| | - Hirotugu Kikuchi
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka
- Japan
| | | | | | | | - Moon Sun Cho
- Department of Chemical & Biochemical Engineering
- Dongguk University-Seoul
- Seoul
- Republic of Korea
| | - Min Young Lee
- Department of Chemical & Biochemical Engineering
- Dongguk University-Seoul
- Seoul
- Republic of Korea
| | - Yasushi Okumura
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka
- Japan
| | - Joo-Hee Hong
- Department of Industrial Chemical Engineering
- Suncheon Jeil College
- Suncheon
- Republic of Korea
| | - Sung-Kyu Hong
- Department of Chemical & Biochemical Engineering
- Dongguk University-Seoul
- Seoul
- Republic of Korea
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Yoon J, Noh M, Lee JB, Lee JH. Highly Sustainable and Completely Amorphous Hierarchical Ceramide Microcapsules for Potential Epidermal Barrier. Polymers (Basel) 2020; 12:polym12092166. [PMID: 32971919 PMCID: PMC7569765 DOI: 10.3390/polym12092166] [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: 09/07/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 11/16/2022] Open
Abstract
As a main component of the stratum corneum, ceramides can construct protective lamellae to provide an epidermal barrier against dehydration or external microorganisms. However, as ceramide molecules can easily form the isolated crystalline phase through self-assembly due to the amphipathic nature of bioactive lipids, the effective incorporation of ceramides into liquid media is the remaining issue for controlled release. Here, we report an unprecedented effective strategy to fabricate a completely amorphous and highly sustainable hierarchical ceramide polymer microcapsule for promising epidermal barrier by using the interpenetrating and cooperative self-construction of conical amphiphiles with a different critical packing parameter. The self-constructed amorphous architecture of ceramides in polymer microcapsule is achieved by the facile doping of conical amphiphiles and subsequent in situ polymerization of shell polymer in the core-shell geometry. It is experimentally revealed that an irregular cooperative packing structure formed by adaptive hydrophobic-hydrophilic interactions of cylindrical ceramides and conical amphiphiles in the confined microcapsule geometry enables a completely amorphous morphology of ceramides to be realized during the spontaneous encapsulation process. Furthermore, this elegant approach affords a highly dispersible and uniform hierarchical amorphous ceramide microcapsule with a greatly enhanced long-term stability compared to conventional crystalline ceramides.
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Affiliation(s)
- Joonsik Yoon
- Department of Chemical Engineering, Myongji University, Yongin 17058, Korea;
| | - Minjoo Noh
- Innovation Lab, Cosmax R&I Center, Cosmax, Seongnam 13486, Korea; (M.N.); (J.B.L.)
| | - Jun Bae Lee
- Innovation Lab, Cosmax R&I Center, Cosmax, Seongnam 13486, Korea; (M.N.); (J.B.L.)
| | - Jun Hyup Lee
- Department of Chemical Engineering, Soongsil University, Seoul 06978, Korea
- Correspondence: ; Tel.: +82-2-829-8329
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27
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Lee JB, Woo HK. Quality Evaluation of Mobile Applications for Fine dust Management. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Recently, the use of fine dust management mobile applications has been on the rise in South Korea. The aim of this study is to describe the current status of fine dust and air pollution mhealth apps used in Korea and to make qualitative assessments of them.
Methods
App search contents analysis 400 apps were searched using PM2.5, PM10 and yellow dust, the main keywords related to fine dust, referring to the preceding reference from December 30, 2019 to January 2, 2020. Among the apps searched, apps that meet all six criteria, such as those with 1) user score ≥4.0, 2) n of review Top 50, 3) those that do not duplicated, 4) apps that are related to the topic, 5) apps set in Korean, and 6) apps that do not have errors, were selected for the study. App assessment The app evaluation of the study utilizes the MARS scale, an app assessment tool developed overseas. The assessment was conducted for a week from January 3, 2020 to January 10, 2020. Each of the apps averaged scores evaluated over a week for each category and averaged over five categories for an overall quality score.
Results
The standard deviation of the information and functionality of the 30 apps was similar, with 3.62 (SD 0.38) and 3.58 (SD 0.43), respectively. On the other hand, engagement was the lowest with an average of 3.1 (SD 0.44). The average of aesthetics was 3.4 (SD 0.64), indicating that deviations between apps were very large
Conclusions
It is deemed necessary to improve the user interface (UI) and configuration of the app to enhance the application's engagement and aesthetics in order to increase the use of fine dust apps by consumers and gain effect.
Key messages
This research provided information that consumers can reasonably use and select mobile health apps by evaluating and reviewing the contents of fine dust and air pollution mobile health apps. this study is important in that it can serve as a reference for app developers to consider in future app development.
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Affiliation(s)
- J B Lee
- Health Administration, Kong Ju National University, Gong Ju, South Korea
| | - H K Woo
- Health Administration, Kong Ju National University, Gong Ju, South Korea
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28
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Han SJ, Moon D, Park MY, Kwon S, Noh M, Jang J, Lee JB, Kim KS. Electric field-induced changes in biomechanical properties in human dermal fibroblasts and a human skin equivalent. Skin Res Technol 2020; 26:914-922. [PMID: 32594564 DOI: 10.1111/srt.12894] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/30/2020] [Indexed: 12/01/2022]
Abstract
PURPOSE An electric field (EF) can be used to change the mechanical properties of cells and skin tissues. We demonstrate EF-induced elasticity changes in human dermal fibroblasts (HDFs) and a human skin equivalent and identify the underlying principles related to the changes. METHODS HDFs and human skin equivalent were stimulated with electric fields of 1.0 V/cm. Change in cellular elasticity was determined by using atomic force microscopy. Effects of EF on the biomechanical and chemical properties of a human skin equivalent were analyzed. In cells and tissues, the effects of EF on biomarkers of cellular elasticity were investigated at the gene and protein levels. RESULTS In HDFs, the cellular elasticity was increased and the expression of biomarkers of cellular elasticity was regulated by the EF. Expression of the collagen protein in the human skin equivalent was changed by EF stimulation; however, changes in density and microstructure of the collagen fibrils were not significant. The viscoelasticity of the human skin equivalent increased in response to EF stimulation, but molecular changes were not observed in collagen. CONCLUSIONS Elasticity of cells and human skin equivalent can be regulated by electrical stimulation. Especially, the change in cellular elasticity was dependent on cell age.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate school, Kyung Hee University, Seoul, South Korea.,Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Donggerami Moon
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Moon Young Park
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Sangwoo Kwon
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Minjoo Noh
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Jihui Jang
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Jun Bae Lee
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
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29
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Lee JY, Sung M, Seo H, Park YJ, Lee JB, Shin SS, Lee Y, Shin K, Kim JW. Temperature-responsive interdrop association of condensed attractive nanoemulsions. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.02.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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30
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Seo M, Seo M, Choi SE, Shin K, Lee JB, Yang DY, Kim JW. Cellulose nanofiber-multilayered fruit peel-mimetic gelatin hydrogel microcapsules for micropackaging of bioactive ingredients. Carbohydr Polym 2020; 229:115559. [DOI: 10.1016/j.carbpol.2019.115559] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 10/07/2019] [Accepted: 10/30/2019] [Indexed: 10/25/2022]
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31
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Kim SJ, Bae J, Lee SE, Lee JB, Park CH, Lim DH, Park MS, Ha J. A novel in vivo test method for evaluating the infrared radiation protection provided by sunscreen products. Skin Res Technol 2019; 25:890-895. [PMID: 31338921 DOI: 10.1111/srt.12754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 06/27/2019] [Indexed: 01/28/2023]
Abstract
BACKGROUND Infrared radiation (IR) exposure generates reactive oxygen species and induces matrix metalloproteinase-1 expression in human skin. Moreover, while not as acute as ultraviolet radiation, repeated infrared irradiation can result in the photoaging of skin. Broad-spectrum sunscreens can protect skin from IR, but no human in vivo test methods for the evaluation of sunscreens' IR protection effect have been developed. We aimed to develop such a method. MATERIALS AND METHODS We included 155 Korean subjects in our three-part clinical study. The IR reflectance of subjects' skin was measured using a benchtop model of an IR light source and a reflectance measuring probe. We measured the IR reflectance in relation to skin color and hydration level to set up our experimental conditions. We then calculated the infrared protection factors (IPFs) of cosmetic emulsions as the IR reflectance ratio between cosmetic sunscreen-applied skin and non-sunscreen-applied skin and assessed the relationship between IPFs and the amount of sunscreen ingredients. Finally, this method was validated using several commercial sunscreen cosmetics. RESULTS Skin color and hydration level did not influence the IR reflectance of subjects' skin. The IPFs of cosmetic sunscreens showed a positive correlation with the amount of inorganic sunscreen ingredients. CONCLUSION In this study, we developed a simple, fast, and ethically acceptable human in vivo test method for evaluating the IPFs of cosmetic sunscreens.
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Affiliation(s)
- Su Ji Kim
- Cosmax Inc, Bundang-gu, Seongnam, Korea
| | - Jiyoun Bae
- I.E.C. Korea, Yeongtong-gu, Suwon, Korea
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Son HY, Koo BI, Lee JB, Kim KR, Kim W, Jang J, Yoon MS, Cho JW, Nam YS. Tannin-Titanium Oxide Multilayer as a Photochemically Suppressed Ultraviolet Filter. ACS Appl Mater Interfaces 2018; 10:27344-27354. [PMID: 30039969 DOI: 10.1021/acsami.8b09200] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
UV filters can initiate redox reactions of oxygen and water when exposed to sunlight, generating reactive oxygen species (ROS) that deteriorate the products containing them and cause biological damages. This photochemical reactivity originates from the high chemical potential of UV filters, which also determines the optical properties desirable for sunscreen applications. We hypothesize that this dilemma can be alleviated if the photochemical pathway of UV filters is altered to coupling with redox active molecules. Here, we employ tannic acid (TA) as a key molecule for controlling the photochemical properties of titanium dioxide nanoparticles (TiO2 NPs). TA provides an unusual way for layer-by-layer assembly of TiO2 NPs by the formation of a ligand-to-metal charge transfer complex that alters the nature of UV absorption of TiO2 NPs. The galloyl moieties of TA efficiently scavenge ROS due to the stabilization of ROS by intramolecular hydrogen bonding while facilitating UV screening through direct charge injection from TA to the conduction band of TiO2. The TiO2-TA multilayers assembled in open porous polymer microspheres substantially increased sun protection while dramatically reducing ROS under UV exposure. The assembled structure exhibits excellent in vivo anti-UV skin protection against epidermal hyperplasia, inflammation, and keratinocyte apoptosis without long-term toxicity.
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Affiliation(s)
| | | | - Jun Bae Lee
- Innovation Lab , Cosmax Research & Innovation Center , 662 Sampyong-dong , Bundang-gu, Seongnam 13486 , Gyeonggi-do , Republic of Korea
| | | | - Woojin Kim
- Pathology Research Center, Department of Jeonbuk Inhalation Research , Korea Institute of Toxicology , 30 Baekhak-1-gil , Jeongup 56212 , Jeonbuk , Republic of Korea
| | - Jihui Jang
- Innovation Lab , Cosmax Research & Innovation Center , 662 Sampyong-dong , Bundang-gu, Seongnam 13486 , Gyeonggi-do , Republic of Korea
| | - Moung Seok Yoon
- Innovation Lab , Cosmax Research & Innovation Center , 662 Sampyong-dong , Bundang-gu, Seongnam 13486 , Gyeonggi-do , Republic of Korea
| | - Jae-Woo Cho
- Pathology Research Center, Department of Jeonbuk Inhalation Research , Korea Institute of Toxicology , 30 Baekhak-1-gil , Jeongup 56212 , Jeonbuk , Republic of Korea
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Kim H, Kang Y, Jang E, Lee JB, Park CH, Park MS, Kim JS. Monolayer and Bilayer Structures of Mixtures of Ceramide IIIb and c16-Alkyl Glucosides. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11539] [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: 11/10/2022]
Affiliation(s)
- Haein Kim
- Department of Chemistry and Nanoscience; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Yunwon Kang
- Department of Chemistry and Nanoscience; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Eunseon Jang
- COSMAX R&I Center; Gyeonggi-do 13486 Republic of Korea
| | - Jun Bae Lee
- COSMAX R&I Center; Gyeonggi-do 13486 Republic of Korea
| | - Chun Ho Park
- COSMAX R&I Center; Gyeonggi-do 13486 Republic of Korea
| | | | - Jun Soo Kim
- Department of Chemistry and Nanoscience; Ewha Womans University; Seoul 03760 Republic of Korea
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34
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Achita P, Dervovic D, Ly D, Lee JB, Haug T, Joe B, Hirano N, Zhang L. Infusion of ex-vivo expanded human TCR-αβ + double-negative regulatory T cells delays onset of xenogeneic graft-versus-host disease. Clin Exp Immunol 2018; 193:386-399. [PMID: 30066399 DOI: 10.1111/cei.13145] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2018] [Indexed: 12/25/2022] Open
Abstract
Despite the demonstration of potent immunosuppressive function of T cell receptor (TCR)-αβ+ double-negative regulatory T cells (DN Tregs ), scarce numbers and lack of effective expansion method limit their clinical applications. Here we describe an approach that allows for ∼3500-fold ex-vivo expansion of human DN Tregs within 3 weeks with > 97% purity. Ex-vivo-expanded DN Tregs suppress proliferation of polyclonally stimulated autologous T and B cells in vitro through direct cell-to-cell contact. In vivo, we demonstrate for the first time that infusion of human DN Tregs delayed an onset of xenogeneic graft-versus-host disease (GVHD) significantly in a humanized mouse model. Furthermore, preincubation of ex-vivo-expanded DN Tregs with a mechanistic target of rapamycin (mTOR) inhibitor rapamycin enhanced their immune regulatory function further. Taken together, this study demonstrates that human DN Tregs can be expanded ex vivo to therapeutic numbers. The expanded DN Tregs can suppress proliferation of T and B cells and attenuate GVHD, highlighting the potential clinical use of DN Tregs to mitigate GVHD.
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Affiliation(s)
- P Achita
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada.,Institute of Medical Science, Toronto, ON, Canada
| | - D Dervovic
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada
| | - D Ly
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada
| | - J B Lee
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - T Haug
- Department of Internal Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - B Joe
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada
| | - N Hirano
- Department of Immunology, University of Toronto, Toronto, ON, Canada.,Princess Margaret Cancer Center, University Health Network, Toronto, ON, Canada
| | - L Zhang
- Toronto General Research Institute, University Health Network, Toronto, ON, Canada.,Institute of Medical Science, Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
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35
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Kim SK, You HR, Kim SH, Yun SJ, Lee SC, Lee JB. Skin photorejuvenation effects of light-emitting diodes (LEDs): a comparative study of yellow and red LEDs in vitro and in vivo. Clin Exp Dermatol 2018; 41:798-805. [PMID: 27663159 DOI: 10.1111/ced.12902] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Red-coloured light-emitting diodes (LEDs) can improve skin photorejuvenation and regeneration by increasing cellular metabolic activity. AIM To evaluate the effectiveness of visible LEDs with specific wavelengths for skin photorejuvenation in vitro and in vivo. METHODS Normal human dermal fibroblasts (HDFs) from neonatal foreskin were cultured and irradiated in vitro by LEDs at different wavelengths (410-850 nm) and doses (0-10 J/cm(2) ). In vivo experiments were performed on the skin of hairless mice. Expression of collagen (COL) and matrix metalloproteinases (MMPs) was evaluated by semi-quantitative reverse transcription PCR (semi-qRT-PCR), western blotting and a procollagen type I C-peptide enzyme immunoassay (EIA). Haematoxylin and eosin and Masson trichrome stains were performed to evaluate histological changes. RESULTS In HDFs, COL I was upregulated and MMP-1 was downregulated in response to LED irradiation at 595 ± 2 and 630 ± 8 nm. In the EIA, a peak result was achieved at a dose of 5 J/cm(2) with LED at 595 ± 2 nm. In vivo, COL I synthesis was upregulated in a dose-dependent manner to both 595 and 630 nm LED irradiation, and this effect was prolonged to 21 days after a single irradiation with a dose of 100 J/cm(2) . These histological changes were consistent with the results of semi-qRT-PCR and western blots. CONCLUSION Specific LED treatment with 595 ± 2 and 630 ± 8 nm irradiation was able to modulate COL and MMPs in skin, with the effects persisting for at least 21 days after irradiation. These findings suggest that yellow and red LEDs might be useful tools for skin photorejuvenation.
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Affiliation(s)
- S K Kim
- Namak Oracle Dermatology Clinic, Gwangju, Jeollanam-do, Korea
| | - H R You
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S H Kim
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S J Yun
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S C Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - J B Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea.
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Hwang YJ, Kim N, Lee HS, Lee JB, Choi YJ, Yoon H, Shin CM, Park YS, Lee DH. Reversibility of atrophic gastritis and intestinal metaplasia after Helicobacter pylori eradication - a prospective study for up to 10 years. Aliment Pharmacol Ther 2018; 47:380-390. [PMID: 29193217 DOI: 10.1111/apt.14424] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [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] [Received: 07/10/2017] [Revised: 07/31/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Atrophic gastritis and intestinal metaplasia are premalignant conditions for gastric cancer. Their reversibility by Helicobacter pylori eradication remains controversial. AIM To evaluate the reversibility of atrophic gastritis and intestinal metaplasia by H. pylori eradication with long-term follow-up. METHODS 598 subjects were prospectively enrolled and followed for up to 10 years. They were categorised as H. pylori-negative (n = 65), H. pylori non-eradicated (n = 91), and H. pylori-eradicated (n = 442). Histological assessment was performed for antrum and corpus by Sydney classification. RESULTS Histological follow-up was performed regularly at 1, 2, 3-4 and ≥5 years, with mean follow-up of 1.07 ± 0.21, 2.29 ± 0.83, 3.93 ± 1.02, and 6.45 ± 1.28 years, respectively. Atrophic gastritis in antrum and corpus gradually and significantly (both P < .05 for all timepoints) improved only in the H. pylori-eradicated group compared to that at baseline. Significant difference in atrophic gastritis between H. pylori-eradicated and H. pylori-negative groups disappeared from 1-year follow-up. Similarly, intestinal metaplasia in antrum and corpus improved significantly (both P < .05 for all timepoints) only in the H. pylori-eradicated group in comparison with that at baseline. Significant difference in intestinal metaplasia between H. pylori-eradicated and H. pylori-negative groups disappeared from ≥5 years of follow-up in the antrum and from 3 years of follow-up in the corpus. CONCLUSION H. pylori eradication may be a preventative strategy for intestinal-type gastric cancer by regression of atrophic gastritis and intestinal metaplasia.
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Affiliation(s)
- Y-J Hwang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - N Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
| | - H S Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - J B Lee
- Division of Statistics in Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y J Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - H Yoon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - C M Shin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y S Park
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - D H Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
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Yang S, Park J, Lee H, Lee JB, Lee BU, Oh BH. Error rate of automated calculation for wound surface area using a digital photography. Skin Res Technol 2017; 24:117-122. [PMID: 28718523 DOI: 10.1111/srt.12398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Although measuring would size using digital photography is a quick and simple method to evaluate the skin wound, the possible compatibility of it has not been fully validated. PURPOSE To investigate the error rate of our newly developed wound surface area calculation using digital photography. METHODS Using a smartphone and a digital single lens reflex (DSLR) camera, four photographs of various sized wounds (diameter: 0.5-3.5 cm) were taken from the facial skin model in company with color patches. The quantitative values of wound areas were automatically calculated. The relative error (RE) of this method with regard to wound sizes and types of camera was analyzed. RESULTS RE of individual calculated area was from 0.0329% (DSLR, diameter 1.0 cm) to 23.7166% (smartphone, diameter 2.0 cm). In spite of the correction of lens curvature, smartphone has significantly higher error rate than DSLR camera (3.9431±2.9772 vs 8.1303±4.8236). However, in cases of wound diameter below than 3 cm, REs of average values of four photographs were below than 5%. In addition, there was no difference in the average value of wound area taken by smartphone and DSLR camera in those cases. CONCLUSION For the follow-up of small skin defect (diameter: <3 cm), our newly developed automated wound area calculation method is able to be applied to the plenty of photographs, and the average values of them are a relatively useful index of wound healing with acceptable error rate.
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Affiliation(s)
- S Yang
- Medical Physics Division, Stanford University, Palo Alto, USA
| | - J Park
- Department of Electronics Engineering, Ewha Woman's University, Seoul, Republic of Korea
| | - H Lee
- Department of Electronics Engineering, Ewha Woman's University, Seoul, Republic of Korea
| | - J B Lee
- Department of Dermatology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - B U Lee
- Department of Electronics Engineering, Ewha Woman's University, Seoul, Republic of Korea
| | - B H Oh
- Department of Dermatology, Keimyung University School of Medicine, Daegu, Republic of Korea
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Pensabene V, Crowder SW, Balikov DA, Lee JB, Sung HJ. Optimization of electrospun fibrous membranes for in vitro modeling of blood-brain barrier. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:125-128. [PMID: 28268295 DOI: 10.1109/embc.2016.7590656] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The blood-brain barrier (BBB) plays a critical role in brain homeostasis at the cellular and global level. Mimicking the selective permeability and transport properties of the BBB to specific molecules and cells remains a significant challenge towards the development of a physiologically relevant in vitro BBB model. In this study, we developed electrospun poly (ε-caprolactone) (PCL) and polyethylene glycol (PEG) copolymer membranes that supported different cellular components of the neurovascular unit including human-derived endothelial cells, pericytes and astrocytes. Comparative analyses of thickness, morphology, biocompatibility and permeability of membranes were also conducted. We found that collagen coated 4%PEG-96%PCL membranes supported the growth of a confluent and tight endothelium confirmed by transendothelial electrical resistance measurements (TEER). Based on fabrication process and reported results, we finally discuss the adoption of these electrospun fiber membranes for in vitro and on-a-chip human BBB models.
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Kang MK, Mao W, Lee JB, Yoo HS. Epidermal growth factor (EGF) fragment-guided anticancer theranostic particles for pH-responsive release of doxorubicin. Int J Pharm 2017; 519:104-112. [DOI: 10.1016/j.ijpharm.2017.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 12/23/2016] [Accepted: 01/09/2017] [Indexed: 10/20/2022]
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40
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Lee JB, Lee YR, Nam YS, Kim JW. Temperature-responsive Hydrogels Synthesized from Photo-Polymerizable Poloxamer Macromers for Topical Skin Moisturizing. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun Bae Lee
- Department of Bionano Technology; Hanyang University; Ansan 15588 Republic of Korea
- Innovation Lab; Cosmax R&I Center; Seongnam 13486 Republic of Korea
| | - Yea Ram Lee
- Department of Bionano Technology; Hanyang University; Ansan 15588 Republic of Korea
| | - Yoon Sung Nam
- Department of Materials Science and Engineering; KAIST; Daejeon 34141 Republic of Korea
| | - Jin Woong Kim
- Department of Bionano Technology; Hanyang University; Ansan 15588 Republic of Korea
- Department of Applied Chemistry; Hanyang University; Ansan 15588 Republic of Korea
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Kim BC, Kim YE, Chang HJ, Lee SH, Youk EG, Lee DS, Lee JB, Lee EJ, Kim MJ, Sohn DK, Oh JH. Lymph node size is not a reliable criterion for predicting nodal metastasis in rectal neuroendocrine tumours. Colorectal Dis 2016; 18:O243-51. [PMID: 27166857 DOI: 10.1111/codi.13377] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 12/08/2015] [Accepted: 04/12/2016] [Indexed: 02/08/2023]
Abstract
AIM The study was designed to assess the correlation between lymph node (LN) size and LN metastasis in patients with rectal neuroendocrine tumours (NETs). METHOD Forty patients who underwent curative resection with lymphadenectomy for a rectal NET between January 2007 and December 2012 were included. The short and long diameters of entire nodes were microscopically measured using a slide gauge. RESULTS In all, 1052 LNs were collected from the 40 patients, with 49 (4.7%) showing evidence of metastasis. Metastasis-positive LNs had significantly greater long and short diameters (P < 0.001) than metastasis-negative LNs. Of the 49 metastatic LNs, 29 (59.2%) were ≤ 5 mm in largest diameter. In five patients, the largest metastatic LN was only 2-3 mm in diameter. In clinically node-negative (cN0) patients, 18 (51.4%) patients had metastatic LNs (pN1). CONCLUSION The size of LNs containing metastasis varied widely, with some being very small. LN size alone is therefore not a sufficient predictor of tumour metastasis in rectal NETs. Radical surgery with lymphadenectomy should be considered for patients with rectal NETs with high risk factors for LN metastasis, even those without LN enlargement.
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Affiliation(s)
- B C Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - Y E Kim
- Department of Pathology, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - H J Chang
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea.,Department of Pathology, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - S H Lee
- Department of Pathology, Daehang Hospital, Seoul, Korea
| | - E G Youk
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - D-S Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - J B Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - E-J Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - M J Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - D K Sohn
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - J H Oh
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
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Kang MK, Kim Y, Gil S, Lee S, Jang J, Kim SJ, Yoon MS, Yoo KJ, Lee JB, Yoo HS. Effects of liquid crystal-based formulation on transdermal delivery of retinyl palmitate and proliferation of epidermal cells. Macromol Res 2015. [DOI: 10.1007/s13233-016-4006-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kim YJ, Cho HH, Kim SO, Lee JB, Lee SC. Reconstruction algorithm for nasal basal cell carcinoma with skin involvement only: analysis of 221 cases repaired by minor surgery. Clin Exp Dermatol 2015; 40:728-34. [PMID: 25959078 DOI: 10.1111/ced.12676] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Basal cell carcinoma (BCC) often occurs on the nose. Reconstruction of the nose should yield excellent aesthetic and functional outcomes. AIM We propose a technical algorithm for the reconstruction of surgical defects, based on our analysis of 221 cases of nasal BCC with skin involvement only, which could be repaired by minor surgery. METHODS The aesthetic and functional outcomes for various reconstruction techniques were analysed according to defect location and size. A reconstruction algorithm was proposed with the aim of obtaining the best surgical results. RESULTS Defect location and size were key considerations. Primary closure was the first option for small defects (< 10 mm), with scores of 3.4 for objective aesthetic outcome (OAO), 3.2 for subjective aesthetic outcome (SAO) and 3.3 for subjective functional outcome (SFO). The first option for medium defects (1-20 mm) was the island pedicle flap, with scores of 3.5 for OAO, 3.2 for SAO and 3.7 for SFO. The first option for large defects (> 20 mm) was the transposition flap for the upper nose (scores of 2.0 for OAO and SAO and 3.0 for SFO) and the interpolation flap for the lower nose (2.8 for OAO and 2.9 for SAO and SFO). CONCLUSIONS We have proposed an algorithm to select the optimal technique for repairing nasal BCC surgical defects according to their size and location.
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Affiliation(s)
- Y J Kim
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - H H Cho
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Medical School, Gwangju, Korea
| | - S O Kim
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - J B Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S C Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
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Düsing R, Attallah A, Braselton WE, Lee JB. Antihypertensive effect of volume depletion: interrelation with renal prostaglandins. Contrib Nephrol 2015; 12:41-53. [PMID: 699606 DOI: 10.1159/000401653] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Since the original studies of Patak et al. in 1975 revealed that the antihypertensive and natriuretic effects of furosemide were markedly blunted or abrogated by indomethacin in both normotensive and hypertensive man, it has been postulated that the ameliorative effects of furosemide in human essential hypertension might be mediated by release of intrarenal prostaglandins. To study the direct effects of furosemide on prostaglandin biosynthesis and release, slices of rabbit renal medulla were incubated in Krebs-Ringer bicarbonate buffer, glucose 10 mM, 1-14C-arachidonic acid (AA) 10 microM, HSA /g/100 ml, 30 min 37 degrees C. Measurements were made of radioactive AA leads to PGE2, and total endogenous immunoreactive PGE2 production (iPGE2) with and without the addition of furosemide (10 microgram/ml) to the media. In the absence of furosemide AA leads to PGE2 was 73 +/- 22 nmol/30 min/g and in the presence of furosemide it fell to 30 +/- 4 nmol/30min/g. iPGE2 was 33 +/- / ng/30 min/mg and decreased to 25 +/- 3 mg with furosemide. These results indicate that the natriuresis and antihypertensive effect of furosemide in vivo, which is associated with a significant increase in urinary PGE2, is not the result of a direct stimulation of furosemide on prostaglandin synthesis but may result from a decrease in PGE metabolism, conversion to another biologically active prostaglandin or possibly be a reflection of events secondary to a direct effect of furosemide on renal hemodynamics and electrolyte excretion.
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Jang SH, Yun SJ, Lee SC, Lee JB. Lichen planus pemphigoides associated with chronic hepatitis B virus infection. Clin Exp Dermatol 2014; 40:868-71. [PMID: 25546603 DOI: 10.1111/ced.12530] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2014] [Indexed: 11/30/2022]
Abstract
Lichen planus pemphigoides (LPP) is a rare autoimmune dermatosis with the features of both lichen planus (LP) and bullous pemphigoid (BP). Although in rare cases, LPP has been associated with several medications and conditions, it is generally considered an idiopathic disorder, and its pathogenesis remains uncertain. We report a 56-year-old woman who presented with a 2-year history of flat-topped, polygonal, violaceous-colored papules and some bullae. She was diagnosed with chronic hepatitis B virus (HBV) infection, which had been treated intermittently with entecavir. Histopathological examination showed the typical features of LP with subepidermal blisters, and with linear deposits of IgG along the basement membrane zone on direct immunofluorescence. Immunoblotting revealed antibodies directed at the BP180 and BP230 antigens. We diagnosed the patient with LPP, and treated the condition with systemic steroids and dapsone. To our knowledge, this is the first report of LPP in a patient with chronic HBV infection.
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Affiliation(s)
- S H Jang
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S J Yun
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - S C Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
| | - J B Lee
- Department of Dermatology, Chonnam National University Medical School, Gwangju, Korea
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Park P, Kim WY, Lee JB, Choi SB, Kim WB, Choi SY. Incidental renal cell carcinoma originating from a native kidney after en-bloc resection for adrenal carcinoma in a kidney transplant recipient. Transplant Proc 2014; 46:637-9. [PMID: 24656033 DOI: 10.1016/j.transproceed.2013.11.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Accepted: 11/22/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Renal transplantation is the best treatment for patients with end-stage renal disease. Although there is significantly increased risk of malignancy after renal transplantation, carcinoma of the native kidney is very rare, and moreover, the risk of endocrinologic malignancy after renal transplantation is lower than in the general population and adrenal cortical carcinoma extremely rare. We report a case of incidental renal cell carcinoma originating from a native kidney after en-bloc resection for adrenal carcinoma in a kidney transplant recipient. CASE REPORT A 57 year-old male patient had undergone living-donor kidney transplantation for chronic renal failure from hypertension 15 years earlier and had a right adrenal tumor diagnosed on surveillance abdomen-pelvis computerized tomography. Based on 24-hour catecholamine laboratory findings, nonfunctioning tumor was suspected. The planned en-bloc resection of right adrenal gland and right native kidney combining the perirenal tissue and Gerota fascia was performed, because the tumor was suspicious for malignancy and could possibly invade the perirenal tissue or right kidney. On the final pathology, combined adrenal cortical carcinoma and incidental renal cell carcinoma was confirmed. Renal cell carcinoma was papillary, type I, and stage T1N0M0. Adrenal cortical carcinoma was 7.6 × 6.5 cm in size, had marked nuclear atypia, and was grade IV/IV. Mitotic counts were >10 per high-power field, but it had no capsular invasion or vascular invasion, and free resection margin was confirmed. In the preoperative period, he had taken immunosuppressants FK506 and mycophenolate sodium, but after combined carcinomas were confirmed, the regimen of combination of immunosuppressants was changed to sirolimus with low-dose FK506 and half-dose mycophenolate sodium.
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Lee JB, Bang HJ, Jeong HG. Mechanical properties and microstructure of AZ31 Mg alloy containing Ca element fabricated by various rolling speeds. J Nanosci Nanotechnol 2014; 14:7929-7932. [PMID: 25942896 DOI: 10.1166/jnn.2014.9439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It was reported that the yield strength (YS) of a rolled Mg-3 wt%, Al-1 wt%, Zn-0.3 wt%, Ca alloy reached 340 MPa. The YS value of a rolled Mg-Al-Zn alloy decreases with increasing the rolling speed but that of a rolled Mg-Al-Zn-Ca alloy remains unchanged until the rolling speed of 5 m/min. Static recrystallization behavior in Mg-Al-Zn alloy occurred as a function of rolling speeds; on the other hand, it did not happen in Mg-Al-Zn-Ca alloy. A number of fine precipitates were observed in the grain of the latter alloy, suggesting that they restrain the dislocations from moving during rolling processes and keep the high strength. From the result of boss-forming test, the Mg-Al-Zn-Ca alloy shows more boss-formability than Mg-Al-Zn alloy.
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Kang EJ, Jung H, Woo OH, Park KH, Woo SU, Yang DS, Kim AR, Lee JB, Kim YH, Kim JS, Seo JH. Association of aldehyde dehydrogenase 1 expression and biologically aggressive features in breast cancer. Neoplasma 2014; 61:352-62. [PMID: 24824938 DOI: 10.4149/neo_2014_045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED Aldehyde dehydrogenase 1 (ALDH1) has been regarded as a breast cancer stem cell marker. Several studies have reported that ALDH1 expression is associated with poor prognosis in breast cancer. We aimed, therefore, to determine the prognostic value of ALDH1 expression and its association with several biomarkers in breast cancer tissue using immunohistochemistry. Furthermore, we investigated the characteristics of and differences between cellular and stromal expression of ALDH1. We performed tissue microarray (TMA) analysis of 425 breast cancer tissue samples collected during surgery. Immunohistochemical staining was then performed to measure the expression of ALDH1 and other breast cancer biomarkers. Statistical analysis of the relationship between ALDH1 expression and clinicopathologic characteristics was performed for 390 TMA samples. We found that ALDH1 was expressed in 71 cases (18.2%) in the tumor cells and/or stroma. Of these cases, 38 (9.7%) showed ALDH1 expression in tumor cells and 38 (9.7%) showed ALDH1 expression in the stroma. ALDH1 expression was significantly associated with markers of a poor prognosis, such as young age, estrogen receptor negativity, progesterone receptor negativity, a high histological grade, and a high Ki-67 index. However, ALDH1 expression was not associated with p53, transforming growth factor-beta, Gli-1, YKL-40, or sonic hedgehog expression status. With regard to the expression site, the clinical characteristics did not differ between cases of cellular expression and those of stromal expression. However, ALDH1 expression in tumor cells was correlated with hormone receptor status, histological grade, molecular subtype, epidermal growth factor receptor expression status, and cytokeratin 5/6 expression status while stromal expression of ALDH1 was only correlated with hormone receptor status. Overall, these findings suggest that ALDH1 expression in tumor tissue is associated with a biologically aggressive phenotype. KEYWORDS ALDH1, biologically aggressive, breast cancer.
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Jin S, Lee JB, Kang K, Yoo CK, Kim BM, Park HB, Lim HT, Cho IC, Maharani D, Lee JH. The Possibility of TBC1D21 as a Candidate Gene for Teat Numbers in Pigs. Asian-Australas J Anim Sci 2014; 26:1374-8. [PMID: 25049720 PMCID: PMC4093071 DOI: 10.5713/ajas.2013.13140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 06/24/2013] [Accepted: 05/29/2013] [Indexed: 12/02/2022]
Abstract
Based on a quantitative traits locus (QTL) study using a F2 intercross between Landrace and Korean native pigs, a significant QTL affecting teat numbers in SSC7 was identified. The strong positional candidate gene, TBC1D21, was selected due to its biological function for epithelial mesenchymal cell development. Sequence analysis revealed six single nucleotide polymorphisms (SNPs) in the TBC1D21 gene. Among these, two SNP markers, one silent mutation (SNP01) for g.13,050A>G and one missense mutation (SNP04) for c.829A>T (S277C), were genotyped and they showed significant associations with teat number traits (p value = 6.38E-05 for SNP01 and p value = 1.06E-07 for SNP04 with total teat numbers). Further functional validation of these SNPs could give valuable information for understanding the teat number variation in pigs.
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Affiliation(s)
- S Jin
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - J B Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - K Kang
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - C K Yoo
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - B M Kim
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - H B Park
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - H T Lim
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - I C Cho
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - D Maharani
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
| | - J H Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Deajeon 305-764, Korea
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Jung EJ, Park HB, Lee JB, Yoo CK, Kim BM, Kim HI, Cho IC, Lim HT. Genome-wide association study identifies quantitative trait loci affecting hematological traits in an F2 intercross between Landrace and Korean native pigs. Anim Genet 2014; 45:534-41. [PMID: 24797309 DOI: 10.1111/age.12175] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2014] [Indexed: 11/30/2022]
Abstract
Changes affecting the status of health and robustness can bring about physiological alterations including hematological parameters in swine. To identify quantitative trait loci (QTL) associated with eight hematological traits (one leukocyte trait, six erythrocyte traits and one platelet trait), we conducted a genome-wide association study using the PorcineSNP60K BeadChip in a resource population derived from an intercross between Landrace and Korean native pigs. A total of 36 740 SNPs from 816 F2 progeny were analyzed for each blood-related trait after filtering for quality control. Data were analyzed by the genome-wide rapid association using mixed model and regression (GRAMMAR) approach. A total of 257 significant SNPs (P < 1.36 × 10(-6) ) on SSC3, 6, 8, 13 and 17 were identified for blood-related traits in this study. Interestingly, the genomic region between 17.9 and 130 Mb on SSC8 was found to be significantly associated with red blood cell, mean corpuscular volume and mean corpuscular hemoglobin. Our results include the identification of five significant SNPs within five candidate genes (KIT, IL15, TXK, ARAP2 and ERG) for hematopoiesis. Further validation of these identified SNPs could give valuable information for understanding the variation of hematological traits in pigs.
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Affiliation(s)
- E J Jung
- Department of Animal Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, 660-701, Korea; Institute of Agriculture and Life Sciences, Gyeongsang National University, Jinju, 660-701, Korea
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