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Kim JH, Kwak W, Nam Y, Baek J, Lee Y, Yoon S, Kim W. Effect of postbiotic Lactiplantibacillus plantarum LRCC5314 supplemented in powdered milk on type 2 diabetes in mice. J Dairy Sci 2024:S0022-0302(24)00627-1. [PMID: 38554828 DOI: 10.3168/jds.2023-24103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 02/20/2024] [Indexed: 04/02/2024]
Abstract
Type 2 diabetes (T2D) is a chronic multifactorial disease characterized by a combination of insulin resistance and impaired glucose regulation. The alleviative effects of probiotics on T2D have been widely studied. However, studies on the effects of postbiotics, known as inactivated probiotics, on dairy products are limited. This study aimed to evaluate the effectiveness of postbiotic Lactiplantibacillus plantarum LRCC5314 in milk powder (MP-LRCC5314) in a stress-T2D mouse model. Compared with probiotic MP-LRCC5314, postbiotic MP-LRCC5314 significantly influenced stress-T2D-related factors. The administration of heat-killed MP-LRCC5314 reduced corticosterone levels, increased short-chain fatty acid production by modulating gut microbiota, and regulated immune response, glucose metabolism, stress-T2D-related biomarkers in the brain, gut, and adipose tissues, as well as glucose and insulin sensitivity. Additionally, heat-killed MP-LRCC5314 treatment led to a decrease in pro-inflammatory cytokine levels and an increase in anti-inflammatory cytokine levels. Overall, these findings suggest that adding postbiotic MP-LRCC5314 to milk powder could serve as a potential supplement for stress-T2D mitigation.
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Affiliation(s)
- J-H Kim
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea; LuxBiome Co. Ltd., Seoul 06974, Republic of Korea
| | - W Kwak
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea; Lotte R&D Center, Seoul 07594, Republic of Korea
| | - Y Nam
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea
| | - J Baek
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea
| | - Y Lee
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea
| | - S Yoon
- Lotte R&D Center, Seoul 07594, Republic of Korea
| | - W Kim
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 06974, Republic of Korea; LuxBiome Co. Ltd., Seoul 06974, Republic of Korea.
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Lee SG, Kim YJ, Son MY, Oh MS, Kim J, Ryu B, Kang KR, Baek J, Chung G, Woo DH, Kim CY, Chung HM. Generation of human iPSCs derived heart organoids structurally and functionally similar to heart. Biomaterials 2022; 290:121860. [DOI: 10.1016/j.biomaterials.2022.121860] [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] [Received: 02/08/2022] [Revised: 09/30/2022] [Accepted: 10/09/2022] [Indexed: 11/02/2022]
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Kang KR, Kim CY, Kim J, Ryu B, Lee SG, Baek J, Kim YJ, Lee JM, Lee Y, Choi SO, Woo DH, Park IH, Chung HM. Establishment of Neurotoxicity Assessment Using Microelectrode Array (MEA) with hiPSC-Derived Neurons and Evaluation of New Psychoactive Substances (NPS). Int J Stem Cells 2022; 15:258-269. [PMID: 35769054 PMCID: PMC9396014 DOI: 10.15283/ijsc21217] [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: 11/09/2021] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 11/09/2022] Open
Abstract
Background and Objectives Currently, safety pharmacological tests for the central nervous system depend on animal behavioral analysis. However, due to the subjectivity of behavioral analysis and differences between species, there is a limit to appropriate nervous system toxicity assessment, therefore a new neurotoxicity assessment that can simulate the human central nervous system is required. Methods and Results In our study, we developed an in vitro neurotoxicity assessment focusing on neuronal function. To minimize the differences between species and fast screening, hiPSC-derived neurons and a microelectrode array (MEA) that could simultaneously measure the action potentials of the neuronal networks were used. After analyzing the molecular and electrophysiological characters of our neuronal network, we conducted a neurotoxicity assessment on neurotransmitters, neurotoxicants, illicit drugs, and new psychoactive substances (NPS). We found that most substances used in our experiments responded more sensitively to our MEA-based neurotoxicity assessment than to the conventional neurotoxicity assessment. Also, this is the first paper that evaluates various illicit drugs and NPS using MEA-based neurotoxicity assessment using hiPSC-derived neurons. Conclusions Our study expanded the scope of application of neurotoxicity assessment using hiPSC-derived neurons to NPS, and accumulated evaluation data of various toxic substances for hiPSC-derived neurons.
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Affiliation(s)
- Kyu-Ree Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - C-Yoon Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea.,Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Jin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Bokyeong Ryu
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jieun Baek
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Ye-Ji Kim
- Drug Abuse Research Group, Research Center of Convergence Toxicology, Korea Institute of Toxicology, Daejeon, Korea
| | - Jin-Moo Lee
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Korea
| | - Yootmo Lee
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Korea
| | - Sun-Ok Choi
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Korea
| | - Dong Ho Woo
- Drug Abuse Research Group, Research Center of Convergence Toxicology, Korea Institute of Toxicology, Daejeon, Korea
| | - Il Hwan Park
- Departments of Thoracis and Cardiovascular Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hyung Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
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Baek J, Ryu B, Kim J, Lee SG, Oh MS, Hong KS, Kim EY, Kim CY, Chung HM. Immunomodulation of Pluripotent Stem Cell-Derived Mesenchymal Stem Cells in Rotator Cuff Tears Model. Biomedicines 2022; 10:biomedicines10071549. [PMID: 35884853 PMCID: PMC9312476 DOI: 10.3390/biomedicines10071549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/20/2022] [Accepted: 06/23/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Rotator cuff tears (RCTs) induce chronic muscle weakness and shoulder pain. Treatment of RCT using surgery or drugs causes lipid infiltration and fibrosis, which hampers tissue regeneration and complete recovery. The pluripotent stem cell-derived multipotent mesenchymal stem cells (M-MSCs) represent potential candidate next-generation therapies for RCT. Methods: The difference between M-MSCs and adult-MSCs was compared and analyzed using next-generation sequencing (NGS). In addition, using a rat model of RCT, the muscle recovery ability of M-MSCs and adult-MSCs was evaluated by conducting a histological analysis and monitoring the cytokine expression level. Results: Using NGS, it was confirmed that M-MSC was suitable for transplantation because of its excellent ability to regulate inflammation that promotes tissue repair and reduced apoptosis and rejection during transplantation. In addition, while M-MSCs persisted for up to 8 weeks in vivo, they significantly reduced inflammation and adipogenesis-related cytokine levels in rat muscle. Significant differences were also confirmed in histopathological remission. Conclusions: M-MSCs remain in the body longer to modulate immune responses in RCTs and have a greater potential to improve muscle recovery by alleviating acute inflammatory responses. This indicates that M-MSCs could be used in potential next-generation RCT therapies.
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Affiliation(s)
- Jieun Baek
- Departmentof Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (S.-G.L.); (M.-S.O.)
| | - Bokyeong Ryu
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (B.R.); (J.K.)
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Jin Kim
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (B.R.); (J.K.)
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Seul-Gi Lee
- Departmentof Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (S.-G.L.); (M.-S.O.)
| | - Min-Seok Oh
- Departmentof Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (S.-G.L.); (M.-S.O.)
- Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Ki-Sung Hong
- Mireacellbio Co., Ltd., Seoul 04795, Korea; (K.-S.H.); (E.-Y.K.)
| | - Eun-Young Kim
- Mireacellbio Co., Ltd., Seoul 04795, Korea; (K.-S.H.); (E.-Y.K.)
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea; (B.R.); (J.K.)
- Correspondence: (C.-Y.K.); (H.-M.C.); Tel.: +82-10-9140-0136 (C.-Y.K.); +82-10-7190-1926 (H.-M.C.); Fax: +82-2-455-9012 (C.-Y.K. & H.-M.C.)
| | - Hyung-Min Chung
- Departmentof Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (S.-G.L.); (M.-S.O.)
- Mireacellbio Co., Ltd., Seoul 04795, Korea; (K.-S.H.); (E.-Y.K.)
- Correspondence: (C.-Y.K.); (H.-M.C.); Tel.: +82-10-9140-0136 (C.-Y.K.); +82-10-7190-1926 (H.-M.C.); Fax: +82-2-455-9012 (C.-Y.K. & H.-M.C.)
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Kang KR, Kim J, Ryu B, Lee SG, Oh MS, Baek J, Ren X, Canavero S, Kim CY, Chung HM. BAPTA, a calcium chelator, neuroprotects injured neurons in vitro and promotes motor recovery after spinal cord transection in vivo. CNS Neurosci Ther 2021; 27:919-929. [PMID: 33942993 PMCID: PMC8265943 DOI: 10.1111/cns.13651] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/25/2021] [Accepted: 04/11/2021] [Indexed: 12/27/2022] Open
Abstract
Aim Despite animal evidence of a role of calcium in the pathogenesis of spinal cord injury, several studies conducted in the past found calcium blockade ineffective. However, those studies involved oral or parenteral administration of Ca++ antagonists. We hypothesized that Ca++ blockade might be effective with local/immediate application (LIA) at the time of neural injury. Methods In this study, we assessed the effects of LIA of BAPTA (1,2‐bis (o‐aminophenoxy) ethane‐N, N, N′, N'‐tetraacetic acid), a cell‐permeable highly selective Ca++ chelator, after spinal cord transection (SCT) in mice over 4 weeks. Effects of BAPTA were assessed behaviorally and with immunohistochemistry. Concurrently, BAPTA was submitted for the first time to multimodality assessment in an in vitro model of neural damage as a possible spinal neuroprotectant. Results We demonstrate that BAPTA alleviates neuronal apoptosis caused by physical damage by inhibition of neuronal apoptosis and reactive oxygen species (ROS) generation. This translates to enhanced preservation of electrophysiological function and superior behavioral recovery. Conclusion This study shows for the first time that local/immediate application of Ca++ chelator BAPTA is strongly neuroprotective after severe spinal cord injury.
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Affiliation(s)
- Kyu-Ree Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jin Kim
- Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Bokyeong Ryu
- Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Min-Seok Oh
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Jieun Baek
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
| | - Xiaoping Ren
- Department of Orthopedics, Ruikang Hospital, Nanning, China.,GICUP-Global Initiative to Cure Paralysis, Columbus, Ohio, USA
| | - Sergio Canavero
- GICUP-Global Initiative to Cure Paralysis, Columbus, Ohio, USA.,HEAVEN/GEMINI International Collaborative Group, Turin, Italy
| | - C-Yoon Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea.,GICUP-Global Initiative to Cure Paralysis, Columbus, Ohio, USA.,Department of Physiology, College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Hyung Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
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Wang F, Trier A, Li F, Kim S, Chen Z, Chai J, Mack M, Morrison S, Hamilton J, Baek J, Yang T, Heul AMV, Xu A, Xie Z, Dong X, Kubo M, Hu H, Hsieh C, Dong X, Liu Q, Margolis D, Ardeleanu M, Miller M, Kim B. 201 A basophil-neuronal axis promotes itch. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.222] [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: 11/24/2022]
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Baek J, Lennon S. For control of COVID-19: the development of regular mass testing of COVID-19 in old age psychiatry wards. Eur Psychiatry 2021. [PMCID: PMC9471168 DOI: 10.1192/j.eurpsy.2021.688] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction
COVID-19, was declared a pandemic by World Health Organisation on March 11, 2020. Older people with dementia or those with multimorbidity are more vulnerable to infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for the development of COVID-19. Given absence of a vaccine or treatment, prevention is the fundamental aspect of COVID-19 control. This requires early identification of contagious people with COVID-19 and isolation keeping them apart from non infected group of people. Early identification of infection in elderly with dementia or functional psychiatric condition is often difficult, due to difficulty in obtaining history or evaluating medical symptoms. Objectives 1) To establish the current standards of interventions provided at the unit to control COVID-19, with current recommendation by Government guidance. 2) To address difficulties in early identification of people of COVID-19 in Old Age Psychiatry wards. 3) To introduce sustainable interventions aimed at controlling COVID-19 risk, targeted to this group. Methods Trust guidance for COVID-19 testing on the ward and guidance of isolation were reviewed. Literature review of currently available scientific evidence for testing for controlling COVID-19 was conducted. Results We have created a bi-weekly mass testing guidance for Old Age Psychiatry inpatient wards with clear guidane of when to start isolation and when to stop isolation. Conclusions There is no specific interventions to target older adult within our service currently and it was felt that it is necessary to develop a sustainable mass testing programme for this group of people for control of COVID-19.
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Lee SG, Kim J, Oh MS, Ryu B, Kang KR, Baek J, Lee JM, Choi SO, Kim CY, Chung HM. Development and validation of dual-cardiotoxicity evaluation method based on analysis of field potential and contractile force of human iPSC-derived cardiomyocytes / multielectrode assay platform. Biochem Biophys Res Commun 2021; 555:67-73. [PMID: 33813278 DOI: 10.1016/j.bbrc.2021.03.039] [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: 02/22/2021] [Accepted: 03/08/2021] [Indexed: 11/24/2022]
Abstract
A recent in vitro cardiovascular safety pharmacology test uses cardiomyocytes derived from human induced pluripotent stem cells (hiPSCs) to overcome the limitations of the classical test systems, such as species differences and local channel analysis. The Comprehensive in vitro Proarrhythmia Assay (CiPA) is a new proarrhythmia screening paradigm proposed by a CiPA steering expert group, which essentially requires iPSCs derived cardiomyocyte-based electrophysiological evaluation technology. Moreover, the measurement of the contractile force is also emerging as an important parameter to recapitulate non-proarrhythmic cardiotoxicity. Therefore, we constructed an multielectrode assay (MEA) evaluation method that can measure the electrophysiological changes with 6 reference drugs in hiPSC-derived cardiomyocytes. Subsequently, it was confirmed that the electrophysiological were changed in accordance with the mechanism of action of the drugs. Furthermore, based on the multi-probe impedance, we confirmed the decrease in contractile force due to treatment with drugs, and developed a platform to evaluate cardiotoxicity according to drugs along with field potential changes. Our excitation-contraction coupling cardiotoxicity assessment is considered to be more supportive in cardiac safety studies on pharmacologic sensitivity by complementing each assessment parameter.
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Affiliation(s)
- Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, 120 Neungdong-Ro, Gwangjin-Gu, Seoul, 143-701, Republic of Korea
| | - Jin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Min-Seok Oh
- Department of Stem Cell Biology, School of Medicine, Konkuk University, 120 Neungdong-Ro, Gwangjin-Gu, Seoul, 143-701, Republic of Korea
| | - Bokyeong Ryu
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Kyu-Ree Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, 120 Neungdong-Ro, Gwangjin-Gu, Seoul, 143-701, Republic of Korea
| | - Jieun Baek
- Department of Stem Cell Biology, School of Medicine, Konkuk University, 120 Neungdong-Ro, Gwangjin-Gu, Seoul, 143-701, Republic of Korea
| | - Jin-Moo Lee
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Republic of Korea
| | - Sun-Ok Choi
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, Seoul, 05029, Republic of Korea.
| | - Hyung Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, 120 Neungdong-Ro, Gwangjin-Gu, Seoul, 143-701, Republic of Korea.
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Ryu B, Baek J, Kim H, Lee JH, Kim J, Jeong YH, Lee SG, Kang KR, Oh MS, Kim EY, Kim CY, Chung HM. Anti-Inflammatory Effects of M-MSCs in DNCB-Induced Atopic Dermatitis Mice. Biomedicines 2020; 8:biomedicines8100439. [PMID: 33096640 PMCID: PMC7589030 DOI: 10.3390/biomedicines8100439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 09/09/2020] [Revised: 10/12/2020] [Accepted: 10/20/2020] [Indexed: 01/03/2023] Open
Abstract
Atopic dermatitis (AD) is an inflammatory skin disease caused by an imbalance between Th1 and Th2 cells. AD patients suffer from pruritus, excessive dryness, red or inflamed skin, and complications such as sleep disturbances and depression. Although there are currently many AD treatments available there are insufficient data on their long-term stability and comparative effects. Moreover, they have limitations due to various side effects. Multipotent mesenchymal stem cells (M-MSCs) might have potential for next-generation AD therapies. MSCs are capable of immune function regulation and local inflammatory response inhibition. M-MSCs, derived from human embryonic stem cells (hESC), additionally have a stable supply. In L507 antibody array, M-MSCs generally showed similar tendencies to bone marrow-derived mesenchymal stem cells (BM-MSCs), although the immunoregulatory function of M-MSCs seemed to be superior to BM-MSCs. Based on the characteristics of M-MSCs on immunoregulatory functions, we tested a M-MSC conditioned media concentrate (MCMC) in mice with AD lesions on their dorsal skin. MCMC significantly decreased RNA expression levels of inflammatory cytokines in the mouse dorsal skin. It also suppressed serum IgE levels. In addition, significant histopathologic alleviation was identified. In conclusion, secretions of M-MSCs have the potential to effectively improve AD-related inflammatory lesions. M-MSCs showed potential for use in next-generation AD treatment.
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Affiliation(s)
- Bokyeong Ryu
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (B.R.); (J.K.)
| | - Jieun Baek
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Hana Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Ji-Heon Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Jin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (B.R.); (J.K.)
| | - Young-Hoon Jeong
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Seul-Gi Lee
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Kyu-Ree Kang
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
| | - Min-Seok Oh
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
- Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | | | - C-Yoon Kim
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
- Correspondence: (C.-Y.K.); (H.M.C.); Tel.: +82-10-9140-0136; Fax: +82-2-455-9012
| | - Hyung Min Chung
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Korea; (J.B.); (H.K.); (J.-H.L.); (Y.-H.J.); (S.-G.L.); (K.-R.K.); (M.-S.O.)
- Mireacellbio Co., Ltd., Seoul 04795, Korea;
- Correspondence: (C.-Y.K.); (H.M.C.); Tel.: +82-10-9140-0136; Fax: +82-2-455-9012
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Baek J, Choi Y. Smart Glasses-Based Personnel Proximity Warning System for Improving Pedestrian Safety in Construction and Mining Sites. Int J Environ Res Public Health 2020; 17:E1422. [PMID: 32098398 PMCID: PMC7068505 DOI: 10.3390/ijerph17041422] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/14/2020] [Accepted: 02/19/2020] [Indexed: 11/16/2022]
Abstract
A smart glasses-based wearable personnel proximity warning system (PWS) was developed for pedestrian safety in construction and mining sites. The smart glasses receive signals transmitted by Bluetooth beacons attached to heavy equipment or vehicles, with the proximity determined by the signal strength. A visual alert is displayed to the wearer when in close proximity. The media access control address of the Bluetooth beacon provides information on the approaching equipment or vehicle, which is displayed to the wearer so that they can respond appropriately. There was a detection distance of at least 10 m regardless of the direction the pedestrian was looking and the alert was successful in all 40 trials at ≥10 meters. The subjective workload was evaluated using the NASA task load index on ten subjects, either without a personal PWS, with a smartphone-based PWS, or with the smart glasses-based PWS. The mental, temporal, and physical stresses were lowest when using the smart glasses-based PWS. Smart glasses-based PWSs can improve work efficiency by freeing both hands of the pedestrians, and various functions can be supported through application development. Therefore, they are particularly useful for pedestrian safety in construction and mining sites.
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Affiliation(s)
| | - Yosoon Choi
- Department of Energy Resources Engineering, Pukyong National University, Busan 48513, Korea;
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Kim B, Shin H, Kim W, Kim H, Cho Y, Yoon H, Baek J, Woo K, Lee Y, Ryoo H. PIN1 Attenuation Improves Midface Hypoplasia in a Mouse Model of Apert Syndrome. J Dent Res 2019; 99:223-232. [PMID: 31869252 DOI: 10.1177/0022034519893656] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Premature fusion of the cranial suture and midface hypoplasia are common features of syndromic craniosynostosis caused by mutations in the FGFR2 gene. The only treatment for this condition involves a series of risky surgical procedures designed to correct defects in the craniofacial bones, which must be performed until brain growth has been completed. Several pharmacologic interventions directed at FGFR2 downstream signaling have been tested as potential treatments for premature coronal suture fusion in a mouse model of Apert syndrome. However, there are no published studies that have targeted for the pharmacologic treatment of midface hypoplasia. We used Fgfr2S252W/+ knock-in mice as a model of Apert syndrome and morphometric analyses to identify causal hypoplastic sites in the midface region. Three-dimensional geometric and linear analyses of Fgfr2S252W/+ mice at postnatal day 0 demonstrated distinct morphologic variance. The premature fusion of anterior facial bones, such as the maxilla, nasal, and frontal bones, rather than the cranium or cranial base, is the main contributing factor toward the anterior-posterior skull length shortening. The cranial base of the mouse model had a noticeable downward slant around the intersphenoid synchondrosis, which is related to distortion of the airway. Within a skull, the facial shape variance was highly correlated with the cranial base angle change along Fgfr2 S252W mutation-induced craniofacial anomalies. The inhibition of an FGFR2 downstream signaling enzyme, PIN1, via genetic knockdown or use of a PIN1 inhibitor, juglone, attenuated the aforementioned deformities in a mouse model of Apert syndrome. Overall, these results indicate that FGFR2 signaling is a key contributor toward abnormal anterior-posterior dimensional growth in the midface region. Our study suggests a novel therapeutic option for the prevention of craniofacial malformations induced by mutations in the FGFR2 gene.
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Affiliation(s)
- B Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Shin
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - W Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - Y Cho
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea.,Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - H Yoon
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - J Baek
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - K Woo
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - Y Lee
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Ryoo
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
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12
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Gambassi G, Li L, Baek J, Jesdale BM, Hume A, Caretti D, Goldberg RJ, Lapane KL. P3521Predicting 30-day mortality and 30-day re-hospitalization risks in patients with heart failure. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Heart failure (HF) is the leading cause of hospitalization among persons aged ≥65 years. In the USA, nearly one-quarter of these patients are discharged to skilled nursing facilities (SNFs). These patients are typically older, and have greater mortality and re-hospitalization risks compared with those discharged home. Despite the importance of SNFs as a post-acute care setting for patients with HF, little is known about factors that predict short-term mortality and re-hospitalization in these high risk patients.
Purpose
To develop and validate separate predictive models for 30-day all-cause mortality and 30-day all-cause re-hospitalization among HF patients discharged from acute care hospitals to SNF.
Methods
Using a nationwide dataset including Medicare claims data cross-linked with Minimum Data Set 3.0 (2011–2013), we identified 77,670 hospitalized patients with HF discharged to 11,529 SNFs; we randomly split the patients into development (2/3 of the sample) and validation (1/3 of the sample) cohorts. Using data on patient sociodemographic and clinical characteristics, health service use, functional status, and facility-level factors, we developed separate prediction models for 30-day mortality and 30-day re-hospitalization using logistic regression models in the development cohort.
Results
In the development cohort, the median age of patients was 84 years, 39.6% were men, 83.4% were Caucasian whites. The median Charlson index was 4 and the median length of hospital stay was 6 days. Functional disabilities were prevalent: 80.0% had moderate-to-severe physical limitations and 35.9% moderate or severe cognitive impairment. After admission to SNF, 6.8% died and 24.2% were re-hospitalized within 30 days in the development cohort. Of those who died, 56.1% were re-hospitalized and 13.6% were discharged to home or self-care before their death. Of those who were re-hospitalized, 18.5% were discharged to home or self-care before their readmission. Of 48 potential predictors, 13 patient-level factors remained in the final model for 30-day mortality and 10 patient-level factors for re-hospitalization with good calibration. Among the selected predictors, developing symptoms of dyspnea, having physical limitations, depression severity, BMI, Charlson index, number of hospitalizations in past 6 months and length of hospital stay contributed most. The area under receiver operating characteristic curves were 0.71 for 30-day mortality and 0.63 for re-hospitalization in the validation cohort.
Conclusions
Among HF patients discharged to SNFs, our predictive model based on administrative data may be used to identify those at risk for death within 30 days, which could aid clinicians in improving care during this vulnerable period. Further work identifying factors for re-hospitalization remains needed.
Acknowledgement/Funding
None
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Affiliation(s)
- G Gambassi
- Catholic University of the Sacred Heart, Rome, Italy
| | - L Li
- University of Massachusetts, Worcester, United States of America
| | - J Baek
- University of Massachusetts, Worcester, United States of America
| | - B M Jesdale
- University of Massachusetts, Worcester, United States of America
| | - A Hume
- University of Rhode Island, Kingston, United States of America
| | - D Caretti
- Catholic University of the Sacred Heart, Rome, Italy
| | - R J Goldberg
- University of Massachusetts, Worcester, United States of America
| | - K L Lapane
- University of Massachusetts, Worcester, United States of America
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13
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Lee SK, Baek J, Roh JY, Kim HJ. Clinical characteristics of pediatric cutaneous lupus erythematosus: experience from a tertiary referral center in Korea. Lupus 2019; 28:888-892. [DOI: 10.1177/0961203319851568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The clinical characteristics of cutaneous lupus erythematosus (CLE) are well delineated in adults, but pediatric data, particularly in Asian populations, are limited. Therefore, we evaluated the characteristics of pediatric cases by retrospectively reviewing the medical records of children with CLE during a 15-year period in a tertiary care dermatology clinic in South Korea. The study included 21 children (8 males and 13 females), 4 of whom had neonatal lupus erythematosus (NLE). Among 17 patients with CLE, discoid lupus erythematosus (DLE) was most common (47.1%), followed by acute CLE (ACLE, 35.3%). All ACLE cases had systemic lupus erythematosus (SLE). Female predominance was conspicuous in ACLE/SLE (6/11 females versus 0/6 males), as was older age, whereas DLE and NLE showed near-equal sex distributions. The median age at the diagnosis of CLE was significantly higher in females than in males (15 years versus 4.5 years, p = 0.02). All patients with ACLE/SLE simultaneously showed skin and systemic symptoms from onset. The kidney was the most commonly involved organ. This study revealed unique characteristics of pediatric CLE, further warranting a comprehensive review among various ethnicities to understand the wide spectrum of CLE in the pediatric population.
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Affiliation(s)
| | | | | | - H J Kim
- Department of Dermatology, Gachon Gil Medical Center, Gachon University College of Medicine, Incheon, South Korea
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14
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Kim S, Kim J, Lee J, Kim B, Kang J, Mun D, Baek J, Kim S, Choe J, Song M. PSIX-39 Late-Breaking: Effects of brown rice as alternatives on immune responses and gut microbiota of weaned pigs. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.064] [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: 11/13/2022] Open
Affiliation(s)
- S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Kim
- Chungnam National University,Daejeon, South Korea
| | - J Lee
- Chungnam National University,Daejeon, South Korea
| | - B Kim
- Chungnam National University,Daejeon, South Korea
| | - J Kang
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - J Baek
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Choe
- Chungnam National University,Daejeon, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
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15
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Lee S, Guevarra R, Lee J, Marimuthu V, Kim D, Kim S, Baek J, Mun D, Song M, Kim H. PSX-35 Effects of dietary plant extracts on growth performance and intestinal microbiota composition in weaned piglets. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.1068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Lee
- Dankook University,Yongin, South Korea
| | | | - J Lee
- Department of Agricultural Biotechnology, Seoul National University,Seoul, South Korea
| | | | - D Kim
- National Institute of Animal Science, Jeollabuk-do,South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Baek
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
| | - H Kim
- Dankook University,Yongin, South Korea
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16
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Baek J, Lee J, Kim J, Kim S, Kim B, Kang J, Mun D, Kim S, Choe J, Song M. PSIV-31 Late-Breaking: Effects of dietary multigrain carbohydrase in lactation diets on immune responses and gut microbiota of lactating sows and their litters. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.709] [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: 11/13/2022] Open
Affiliation(s)
- J Baek
- Chungnam National University,Daejeon, South Korea
| | - J Lee
- Chungnam National University,Daejeon, South Korea
| | - J Kim
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - B Kim
- Chungnam National University,Daejeon, South Korea
| | - J Kang
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Choe
- Chungnam National University,Daejeon, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
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17
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Guevarra R, Lee S, Marimuthu V, Lee J, Kim S, Baek J, Mun D, Kim J, Paek S, Jung S, Song M, Kim H. PSX-33 Effects of cellulase-producing microorganisms isolated from silkworm (Bombyx mori) on growth performance and gut microbial community composition of weaned piglets. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.1066] [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: 11/12/2022] Open
Affiliation(s)
| | - S Lee
- Dankook University,Yongin, South Korea
| | | | - J Lee
- Department of Agricultural Biotechnology,Seoul National University,Seoul, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Baek
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - J Kim
- Dankook University,Yongin, South Korea
| | - S Paek
- Dankook University,Yongin, South Korea
| | - S Jung
- Dankook University,Yongin, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
| | - H Kim
- Dankook University,Yongin, South Korea
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18
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Kim J, Lee J, Kim S, Kim B, Kang J, Mun D, Baek J, Kim S, Choe J, Song M. PSIX-19 Late-Breaking: Immune responses of weaned pigs from lactating sows fed palm kernel expellers. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Kim
- Chungnam National Uniiversity,Daejeon, South Korea
| | - J Lee
- Chungnam National Uniiversity,Daejeon, South Korea
| | - S Kim
- Chungnam National Uniiversity,Daejeon, South Korea
| | - B Kim
- Chungnam National Uniiversity,Daejeon, South Korea
| | - J Kang
- Chungnam National Uniiversity,Daejeon, South Korea
| | - D Mun
- Chungnam National Uniiversity,Daejeon, South Korea
| | - J Baek
- Chungnam National Uniiversity,Daejeon, South Korea
| | - S Kim
- Chungnam National Uniiversity,Daejeon, South Korea
| | - J Choe
- Chungnam National Uniiversity,Daejeon, South Korea
| | - M Song
- Chungnam National Uniiversity,Daejeon, South Korea
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19
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Kim B, Kim S, Kim J, Lee J, Kang J, Mun D, Baek J, Kim S, Choe J, Song M. PSIV-27 Late-Breaking: Effects of substitution of corn with brown rice on growth performance, nutrient digestibility, and microbiota of growing-finishing pigs. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.705] [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: 11/13/2022] Open
Affiliation(s)
- B Kim
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Kim
- Chungnam National University,Daejeon, South Korea
| | - J Lee
- Chungnam National University,Daejeon, South Korea
| | - J Kang
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - J Baek
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - J Choe
- Chungnam National University,Daejeon, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
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20
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Lee J, Kim J, Kim S, Kim B, Kang J, Mun D, Baek J, Kim S, Song M. PSXII-16 Late-Breaking: Effects of dietary multigrain carbohydrase on colostrum and milk microRNA of lactating sows. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.076] [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: 11/13/2022] Open
Affiliation(s)
- J Lee
- Chungnam National University,Daejeon, South Korea
| | - J Kim
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - B Kim
- Chungnam National University,Daejeon, South Korea
| | - J Kang
- Chungnam National University,Daejeon, South Korea
| | - D Mun
- Chungnam National University,Daejeon, South Korea
| | - J Baek
- Chungnam National University,Daejeon, South Korea
| | - S Kim
- Chungnam National University,Daejeon, South Korea
| | - M Song
- Chungnam National University,Daejeon, South Korea
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21
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Kang G, Tu TNT, Kim S, Yang H, Jang M, Jo D, Ryu J, Baek J, Jung H. Adenosine-loaded dissolving microneedle patches to improve skin wrinkles, dermal density, elasticity and hydration. Int J Cosmet Sci 2018; 40:199-206. [PMID: 29574973 DOI: 10.1111/ics.12453] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 03/08/2018] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Although dissolving microneedle patches have been widely studied in the cosmetics field, no comparisons have been drawn with the topical applications available for routine use. In this study, two wrinkle-improving products, adenosine-loaded dissolving microneedle patches and an adenosine cream, were evaluated for efficacy, with respect to skin wrinkling, dermal density, elasticity, and hydration, and safety in a clinical test on the crow's feet area. METHODS Clinical efficacy and safety tests were performed for 10 weeks on 22 female subjects with wrinkles around their eyes. The adenosine-loaded dissolving microneedle patch was applied once every 3 days, in the evening, for 8 weeks to the designated crow's feet area. The adenosine cream was applied two times per day, in the morning and evening, for 8 weeks to the other crow's feet area. Skin wrinkling, dermal density, elasticity, and hydration were measured by using PRIMOS® premium, Dermascan® C, Cutometer® MPA580, and Corneometer® CM 825, respectively. In addition, subjective skin irritation was evaluated by self-observation, and objective skin irritation was assessed through expert interviews. RESULTS The adenosine-loaded dissolving microneedle patches had a similar or better efficacy than the adenosine cream. Both groups showed statistically significant efficacy for almost all parameters (P < 0.05). The dissolving microneedle patches had a long-lasting effect on the average wrinkle depth (P < 0.05), only showed efficacy in dermal density (P < 0.05), had an early improving effect on elasticity (P < 0.05), and demonstrated better hydration efficacy (P < 0.001). No adverse effects were observed in either group during the test period. CONCLUSIONS In the clinical efficacy test of four skin-improvement parameters, adenosine-loaded dissolving microneedle patches showed the same or better effect than the adenosine cream, although the weekly adenosine dose was 140 times lower. The dissolving microneedle patches caused no adverse reactions. These adenosine-loaded dissolving microneedle patches are expected to be safe, effective, and novel cosmetics for skin improvement.
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Affiliation(s)
- G Kang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - T N T Tu
- Life Science and Biotechnology, Underwood International College, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - S Kim
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - H Yang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - M Jang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - D Jo
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Ryu
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Baek
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - H Jung
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
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22
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Eom J, Baek J, Hong Y, Kim M, Kim H, Kang S, Park K, Ahn C. Verification of the potency testing method for the monoclonal antibody drugs using reporter gene assay. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.1115] [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: 10/28/2022]
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23
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Baek J, Park M, Kim S, Cho M. A new cellular therapy using soluble RAGE overexpressing-mesenchymal stem cells in a rat model of osteoarthritis. Cytotherapy 2018. [DOI: 10.1016/j.jcyt.2018.03.009] [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: 11/16/2022]
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24
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Jansen E, Dunietz G, Chervin R, Baylin A, Baek J, Banker M, Song P, Cantoral A, Tellez Rojo M, Peterson K. 0853 Adiposity In Mexico City Adolescents: The Interplay Of Sleep Duration And Sleep Variability. Sleep 2018. [DOI: 10.1093/sleep/zsy061.852] [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: 11/12/2022] Open
Affiliation(s)
- E Jansen
- University of Michigan, Ann Arbor, MI
| | - G Dunietz
- University of Michigan, Ann Arbor, MI
| | - R Chervin
- University of Michigan, Ann Arbor, MI
| | - A Baylin
- University of Michigan, Ann Arbor, MI
| | - J Baek
- University of Massachusetts Medical School, Worcester, MA
| | - M Banker
- University of Michigan, Ann Arbor, MI
| | - P Song
- University of Michigan, Ann Arbor, MI
| | - A Cantoral
- National Council of Science and Technology, National Institute of Public Health, MEXICO
| | - M Tellez Rojo
- Center for Nutrition and Health Research, National Institute of Public Health, MEXICO
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25
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Mun D, Park IH, Kim J, Kim S, Lee JJ, Jang K, Kim B, Park S, Kang J, Baek J, Choe J, Cho JY, Cho SH, Song M. 423 Effects of dietary protease on nutrient digestibility of weaned pigs. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.423] [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: 11/13/2022] Open
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26
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Baek J, Park S, Lee JJ, Kim J, Kim S, Jang K, Kim B, Kang J, Mun D, Choe J, Park IH, Cho JY, Cho SH, Song M. 422 Effects of protease on growth performance and nutrient digestibility of growing pigs. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.422] [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: 11/13/2022] Open
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27
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Kang J, Choe J, Park S, Kim J, Kim B, Kim S, Lee JJ, Jang K, Mun D, Baek J, Park IH, Cho JY, Cho SH, Song M. 433 Effects of protease on growth performance and carcass characteristics of finishing pigs. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.433] [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: 11/13/2022] Open
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28
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Park IH, Kang J, Kim J, Kim S, Lee JJ, Jang K, Kim B, Park S, Mun D, Baek J, Choe J, Cho JY, Cho SH, Song M. 402 Effects of dietary protease on growth performance and intestinal morphology of weaned pigs. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.402] [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: 11/13/2022] Open
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29
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Kim J, Park IH, Kim S, Lee JJ, Jang K, Kim B, Park S, Mun D, Choe J, Kang J, Baek J, Cho JY, Cho SH, Song M. 101 Effects of dietary protease on immune responses of weaned pigs. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.101] [Citation(s) in RCA: 2] [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: 11/13/2022] Open
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30
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Lee S, Baek J. P16.15 An intracranial chondrosarcoma mimicking
a skull base meningioma. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.431] [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: 11/13/2022] Open
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31
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Park Y, Kim Y, Leem D, Baek J, Ko S. A retrospective clinical study of subgingival suture or double-layered suture technique for guided bone regeneration. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.916] [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: 10/19/2022]
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Cho Y, Kim B, Bae H, Kim W, Baek J, Woo K, Lee G, Seol Y, Lee Y, Ku Y, Rhyu I, Ryoo H. Direct Gingival Fibroblast/Osteoblast Transdifferentiation via Epigenetics. J Dent Res 2017; 96:555-561. [PMID: 28081379 DOI: 10.1177/0022034516686745] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Alveolar bone resorption caused by trauma or periodontal diseases has represented a challenge for both dental clinicians and researchers. In this study, we evaluate the osteogenic potential of human gingival fibroblasts (HGFs) through a direct transdifferentiation from HGFs to functional osteoblasts via epigenetic modification and osteogenic signaling with bone morphogenetic protein 2 (BMP2) in vitro and in vivo. HGF treatment with 5-aza-2'-deoxycytidine (5-aza-dC) induced demethylation in the hypermethylated CpG islands of the osteogenic lineage marker genes RUNX2 and ALP, and subsequent BMP2 treatment successfully drove the fibroblasts to the osteoblasts' lineage. Cell morphological changes viewed under microscopy and alkaline phosphatase (ALP) and alizarin red S (ARS) staining confirmed the osteoblastic change mediated by epigenetic modification as did real-time polymerase chain reaction (PCR), methylation-specific PCR (MSP), and chromatin immunoprecipitation (ChIP) assay, which demonstrated the altered methylation patterns in the RUNX2 and ALP promoter regions and their effect on gene expression. Furthermore, micro-computed tomography (CT) analysis of in vivo mouse cell transplantation experiments showed high-density signal in the epigenetically modified HGF group; in addition, a significant amount of bone formation was observed in the transplanted material using hematoxylin and eosin (H&E) staining as well. Collectively, our results indicate that epigenetic modification permits the direct programming of HGFs into functional osteoblasts, suggesting that this approach might open a novel therapeutic avenue in alveolar bone regeneration.
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Affiliation(s)
- Y Cho
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea.,2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - B Kim
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - H Bae
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - W Kim
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - J Baek
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - K Woo
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - G Lee
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Seol
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Lee
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - Y Ku
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - I Rhyu
- 2 Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
| | - H Ryoo
- 1 Department of Molecular Genetics, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, South Korea
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Chae E, Baek J, Rha M, Cho Y. SUN-P080: Change in Body Composition and Nutrient Intake after Chemotherapy Treatment of Breast Cancer Patients. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30423-x] [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: 11/17/2022]
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Han M, Baek J. SU-G-IeP2-08: Investigation On Signal Detectability in Volumetric Cone Beam CT Images with Anatomical Background. Med Phys 2016. [DOI: 10.1118/1.4957013] [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] Open
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Choi Y, Han M, Baek J. SU-G-IeP2-01: A Method to Reduce Information Loss in JPEG Compressed Medical Images Using Richardson-Lucy Deconvolution. Med Phys 2016. [DOI: 10.1118/1.4957006] [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] Open
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Kim D, Hwangbo Y, Baek J, Bae J, Moon J, Yang K. Correlation between the apnea–hypopnea index determined by Sleepstyle HC608, a continuous positive airway pressure device and by manual scoring in patients with obstructive sleep apnea syndrome. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.489] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lee C, Han M, Baek J. SU-E-I-10: Investigation On Detectability of a Small Target for Different Slice Direction of a Volumetric Cone Beam CT Image. Med Phys 2015. [DOI: 10.1118/1.4924007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Baek J, Lee J. SU-E-I-73: Visible Image Sequence Based Bio Signal Extraction System and Algorithm for Personal Healthcare. Med Phys 2015. [DOI: 10.1118/1.4924070] [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] Open
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Lee H, Yoon J, Lee E, Cho S, Park K, Choi W, Baek J, Keum K, Koom W. SU-E-J-64: Feasibility Study of Surgical Clips for Fiducial Tracking in CyberKnife System. Med Phys 2015. [DOI: 10.1118/1.4924151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jin SM, Kim TH, Oh S, Baek J, Joung JY, Park SM, Cho YY, Sohn SY, Hur KY, Lee MS, Lee MK, Kim JH. Association between the extent of urinary albumin excretion and glycaemic variability indices measured by continuous glucose monitoring. Diabet Med 2015; 32:274-9. [PMID: 25307609 DOI: 10.1111/dme.12607] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 08/02/2014] [Accepted: 10/06/2014] [Indexed: 11/27/2022]
Abstract
AIMS The contribution of glycaemic variability to the microvascular complication of diabetes has not been established. We examined whether there is an independent association between indices of glycaemic variability in continuous glucose monitoring and extent of albuminuria. METHODS A total of 173 patients with Type 2 diabetes (without insulin therapy, n = 96; with insulin therapy, n = 77) who had unexplained large fluctuations in blood glucose values underwent three-day continuous glucose monitoring. We used a multinomial logistic regression model to determine whether the indices of glycaemic variability independently affected the odds of having a spot urine albumin/creatinine ratio of 30-299 mg/g and ≥ 300 mg/g. RESULTS Higher standard deviation (P = 0.002), mean of daily differences (P = 0.023) and mean amplitude of glycaemic excursion (P = 0.043) significantly increased the odds of having a urine albumin/creatinine ratio of ≥ 300 mg/g. In multivariable analysis, only higher standard deviation, but not mean amplitude of glycaemic excursion and mean of daily differences, independently increased the odds of having a urine albumin/creatinine ratio of ≥ 300 mg/g (P = 0.025). Coefficient of variation (sd/mean) was not associated with the odds of having a urine albumin/creatinine ratio of 30-299 or ≥ 300 mg/g. CONCLUSIONS The independent association between standard deviation and the extent of albuminuria was lost when the measures were normalized by mean glucose level. At least in terms of relative measures of glycaemic variability, we failed to demonstrate an independent association between glycaemic variability and albuminuria extent in patients with inadequately controlled Type 2 diabetes.
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Affiliation(s)
- S-M Jin
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Baek J, Kim Y, Lee G, Lee W. 239. A multivariate analysis of risk factors associated with permanent ileostomy following sphincter-preserving surgery for rectal cancer. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.232] [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: 11/17/2022] Open
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Lim H, Kim D, Kim T, Kim S, Baek J, Chang H, Park J, Oh J. Is Elective Inguinal Radiation Therapy Necessary for Locally Advanced Rectal Cancer Involving Anal Canal? Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1249] [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: 11/24/2022]
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Woo J, Kim J, Baek J, Kim M, Kim S, Lee S, Cho J. Evaluation of Fast Adaptive Planning Method Using Deformable Image Registration and GPU Based RTP for Lung Cancer Patients With Concurrent Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2530] [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: 10/24/2022]
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Woo J, Kim J, Baek J, Shin H, Kim S, Lee S, Jeon B, Cho J, Kim J, Seong J. Evaluation of Dose Summation Method Using Deformable Registration in Adaptive Planning for Locally-Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.820] [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: 11/29/2022]
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Baek J, Oh Y, Park S, Choi E, Jeon K, Kim O, Kim J. SU-E-J-17: Assessment for Setup Uncertainty of Frameless Localization System of Stereotactic Radiosurgery Using Cone Beam Computed Tomography. Med Phys 2013. [DOI: 10.1118/1.4814229] [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] Open
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Baek J, Beachey DJ. SU-E-T-421: 6MV Radiation Small Field Dose: Off Axis and Penumbra Effects, a Study with Radiochromic Film. Med Phys 2012; 39:3801. [PMID: 28517222 DOI: 10.1118/1.4735510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To accurately determine relative dose factor scaling, tissue depth relation, and penumbra details of small 6MV radiation fields with an emphasis on far-off-central-axis fields for various MLC designs -subject matter important in the context of SRS, FSRT, SBRT, and IMRT. METHODS Radiochromic film designed for quantitative dosimetry, EBT3™ film (Ashland Inc.) can be reliably used as a relative dosimeter to within 1% accuracy if one controls for both film and flatbed scanner variation. This enabled a study of the fine detail of small radiation fields and the impact upon these small dose profiles by different MLC designs both on central axis and off. In particular, the impact of leaf-end penumbra from bifocal MLC Optifocus (Siemens) and Synergy Beam Modulator (Elekta) is examined.EBT3 films were placed at 100cm SAD in solid water phantom and irradiated to 200 MU at various depths 1.5cm - 20cm and for various off-axis locations. The films were analysed to give the detailed dosimetric profile of each small field and relate them to both a standard reference field (10 × 10)cm2 and to a broadfield flatness/symmetry irradiation (20 × 20)cm2 . Films were scanned at ∼20 hours post irradiation on an Epson 2000 flatbed scanner and analysed using FilmQAPro and in-house methods. RESULTS As small field size decreases, the field center falls within the penumbra of each MLC edge for megavoltage photon energies. The penumbral effects cause the conventional dosimetric quantity SP to sharply depart from the smooth fieldsize dependence for larger conventional fields. CONCLUSIONS Careful characterization of small field dose and leaf end modeling within a TPS is crucial in both predicting accurate small field dosimetry and off-axis dosimetry.
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Affiliation(s)
- J Baek
- Ryerson University, Toronto, ON.,Dept. Rad. Onc., University of Toronto, Toronto, ON.,Odette Cancer Clinic, Sunnybrook HSC, Toronto, Ontario
| | - D J Beachey
- Ryerson University, Toronto, ON.,Dept. Rad. Onc., University of Toronto, Toronto, ON.,Odette Cancer Clinic, Sunnybrook HSC, Toronto, Ontario
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Kim Y, Kim K, Baek J, Park H, Lee H, Sohn M, Kim K. Usefulness of Impulse Oscillometry In Children With Eosinophilic Bronchitis. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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